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annotate sp_sfrm.c @ 0:9008dbc8ca74

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import original C code from GSM 06.06
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 14 Jun 2024 23:27:16 +0000
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1 /***************************************************************************
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2 *
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3 * File Name: sp_sfrm.c
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4 *
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5 * Purpose: Contains all functions for subframe based processing in the
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6 * speech encoder. Subframe based processing determines the synthetic
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7 * LPC excitation signal, which is composed of the adaptive codebook
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8 * (long-term predictor) vector (in voiced modes), the vector-sum
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9 * codebook vector (two of these in unvoiced mode), and the vector-
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10 * quantized gains applied to these vectors.
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11 *
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12 * Below is a listing of all the functions appearing in the file.
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13 * The functions are arranged according to their purpose. Under
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14 * each heading, the ordering is hierarchical.
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15 *
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16 * sfrmAnalysis
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17 * decorr
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18 * closedLoopLagSearch
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19 * hnwFilt
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20 * g_quant_vl
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21 * g_corr2
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22 * gainTweak
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23 * v_srch
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24 *
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25 *
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26 ***************************************************************************/
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27 /*_________________________________________________________________________
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28 | |
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29 | Include Files |
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30 |_________________________________________________________________________|
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31 */
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32
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33 #include <stdio.h>
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34 #include "mathhalf.h"
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35 #include "sp_rom.h"
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36 #include "sp_dec.h"
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37 #include "sp_frm.h"
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38 #include "sp_sfrm.h"
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39
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40 /*_________________________________________________________________________
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41 | |
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42 | Local Defines |
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43 |_________________________________________________________________________|
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44 */
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45
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46 #define CG_INT_MACS 6
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47 #define C_BITS_UV 7
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48 #define C_BITS_UV_1 C_BITS_UV-1
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49 #define C_BITS_V 9
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50 #define C_BITS_V_1 C_BITS_V-1
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51 #define DELTA_LEVELS 16
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52 #define GSP0_NUM 32
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53 #define GSP0_VECTOR_SIZE 5
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54 #define GTWEAKMAX 0x5A82 /* sqrt(2)/2 */
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55 #define LMAX 142
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56 #define LSMAX (LMAX + CG_INT_MACS/2)
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57 #define HNW_BUFF_LEN LSMAX
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58 #define LSP_MASK 0xffff
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59 #define LTP_LEN 147 /* maximum ltp lag */
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60 #define MAX_CANDIDATE 6 /* maximum number of lag candidates */
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61
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62
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63 /*_________________________________________________________________________
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64 | |
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65 | State variables (globals) |
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66 |_________________________________________________________________________|
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67 */
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68
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69 Shortword pswLtpStateBase[LTP_LEN + S_LEN];
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70 Shortword pswHState[NP];
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71 Shortword pswHNWState[HNW_BUFF_LEN];
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72
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73 /***************************************************************************
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74 *
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75 * FUNCTION NAME: closedLoopLagSearch
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76 *
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77 * PURPOSE:
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78 *
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79 * Performs the closed loop search of a list of candidate lags to
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80 * determine the best fractional lag.
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81 *
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82 * INPUTS:
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83 *
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84 * pswLagList[0:iNumLags] - list of candidate lags
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85 * iNumLags - number of candidate lags in LagList
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86 * pswLtpState[0:5] - array of past excitations (LTP state)
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87 * pswHCoefs[0:9] - coefficient array of spectral weighting filter
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88 * pswPVect[0:39] - speech sub frame data
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89 *
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90 * OUTPUTS:
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91 *
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92 * pswLag - pointer to put best lag from list of candidates
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93 * *pswLtpShift - Number of shifts applied to weighted LTP vector.
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94 *
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95 * RETURN VALUE:
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96 *
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97 * siLagCode - code corresponding to the best lag
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98 *
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99 * IMPLEMENTATION:
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100 *
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101 * Generate excitation vectors for all candidate lags. Find the candidate
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102 * lag that maximizes C**2/G using the calculated excitation.
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103 *
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104 * DESCRIPTION:
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105 *
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106 * The function closedLoopLagSearch() searches a very small subset of the
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107 * available LTP lags. The lags to be searched are defined by the open
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108 * loop lag search. This information is passed in as a list of
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109 * oversampled lag values. These values are translated into LTP
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110 * vectors extracted from the LTP history.
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111 *
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112 * GSM document 06.20's b sub L prime variable is called
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113 * ppswTVect[L][n] in the C code. The document's variable p(n) is
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114 * named pswPVect[] in the C code.
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115 *
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116 * The function performs a simple maximization of the cross correlation
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117 * of the weighted LTP vector and the weighted speech vector divided
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118 * by the autocorrelation of the weighted LTP vector. The function is
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119 * encumbered slightly by the necessity of scaling.
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120 *
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121 * REFERENCE: Sub-clause 4.1.8.5 of GSM Recommendation 06.20
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122 *
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123 * KEYWORDS: closed loop, LTP lag search, adaptive codebook search
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124 *
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125 **************************************************************************/
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126
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127 int closedLoopLagSearch(Shortword pswLagList[], int iNumLags,
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128 Shortword pswLtpState[], Shortword pswHCoefs[],
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129 Shortword pswPVect[],
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130 Shortword *pswLag, Shortword *pswLtpShift)
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131 {
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132
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133 /*_________________________________________________________________________
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134 | |
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135 | Automatic Variables |
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136 |_________________________________________________________________________|
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137 */
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138
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139 Longword L_Energy,
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140 L_ccNorm,
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141 L_cgNorm,
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142 L_CrossCorr;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 Longword pL_CCBuf[MAX_CANDIDATE],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 pL_CGBuf[MAX_CANDIDATE];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 Shortword swCCMax,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 swCCShiftCnt,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 swCGShiftCnt,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 swGMax,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 swLTPEnergy,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 swSampleA,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 pswCCBuf[MAX_CANDIDATE],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 pswCGBuf[MAX_CANDIDATE],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 ppswTVect[N_SUB][S_LEN];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 Shortword i,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 j,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 siLagOffset,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 siLagCode;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 /*_________________________________________________________________________
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 *pswLtpShift = 0; /* Energy in weighted ltp vector =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 * [0..0x7ff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 for (i = 0; i < iNumLags; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 /* Construct the excitation vector for lag i */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 /* ----------------------------------------- */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 fp_ex(pswLagList[i], &pswLtpState[LTP_LEN]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 /* Perform all pole filtering */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 /* -------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 lpcZsIir(&pswLtpState[LTP_LEN], pswHCoefs, ppswTVect[i]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 /* scale the pitch vector s.t. its energy is strictly */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 /* less than 1.0 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 /*----------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 swSampleA = shr(ppswTVect[0][0], 2);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 L_Energy = L_mac(0x001dff4cL, swSampleA, swSampleA);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 for (j = 1; j < S_LEN; j++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 swSampleA = shr(ppswTVect[0][j], 2);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 L_Energy = L_mac(L_Energy, swSampleA, swSampleA);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 /* add in the energy of the first sample of the subsequent lags */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 /*--------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 for (i = 1; i < iNumLags; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 swSampleA = shr(ppswTVect[i][0], 2);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 L_Energy = L_mac(L_Energy, swSampleA, swSampleA);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 /* An upper bound on the weighted pitch vectors energy */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 /*-----------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 swLTPEnergy = round(L_Energy);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 if (sub(swLTPEnergy, 0x07ff) > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 { /* E = (0x7ff.. 0x7fff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 if (sub(swLTPEnergy, 0x1fff) > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 *pswLtpShift = 2; /* E = (0x1fff..0x7fff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 *pswLtpShift = 1; /* E = (0x7ff.. 0x1fff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 for (i = 0; i < iNumLags; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 /* shift all vectors down s.t. the largest is has energy < 1.0 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 /*-------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 for (j = 0; j < S_LEN; j++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 ppswTVect[i][j] = shr(ppswTVect[i][j], *pswLtpShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 /* Calculate the energy of the subframe */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 /* ------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 L_Energy = L_mult(ppswTVect[i][0], ppswTVect[i][0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 for (j = 1; j < S_LEN; j++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 L_Energy = L_mac(L_Energy, ppswTVect[i][j], ppswTVect[i][j]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 pL_CGBuf[i] = L_Energy;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 /* Cross correlate the normalized speech frame and the filtered
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 * subframe */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 /* ---------------------------------------------------------------------
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 * */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 L_CrossCorr = L_mult(ppswTVect[i][0], pswPVect[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 for (j = 1; j < S_LEN; j++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 L_CrossCorr = L_mac(L_CrossCorr, ppswTVect[i][j], pswPVect[j]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 pL_CCBuf[i] = L_CrossCorr;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 /* find the shift count associated with the largest CC and G */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 /* ---------------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 L_ccNorm = L_abs(pL_CCBuf[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 L_cgNorm = pL_CGBuf[0];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257 for (i = 1; i < iNumLags; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 L_ccNorm |= L_abs(pL_CCBuf[i]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260 L_cgNorm |= pL_CGBuf[i];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263 swCCShiftCnt = norm_l(L_ccNorm);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 swCGShiftCnt = norm_l(L_cgNorm);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 for (i = 0; i < iNumLags; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268 pswCCBuf[i] = round(L_shl(pL_CCBuf[i], swCCShiftCnt));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 pswCGBuf[i] = round(L_shl(pL_CGBuf[i], swCGShiftCnt));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272 /* Maximize C**2/G */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273 /* --------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 siLagOffset = maxCCOverGWithSign(pswCCBuf, pswCGBuf,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275 &swCCMax, &swGMax,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276 iNumLags);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278 /* Determine the offset of the max value into CC buffer */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279 /* ---------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 *pswLag = pswLagList[siLagOffset];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282 /* Store Lag Code for best lag result */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283 /* ---------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 quantLag(*pswLag, &siLagCode);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 return (siLagCode);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 /*****************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
291 * FUNCTION NAME: decorr
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
292 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
293 * PURPOSE: Decorrelates(orthogonalizes) a set of vectors from a given
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
294 * vector.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
295 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
296 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
297 * INPUTS: iNumVects - number of vectors to decorrelate
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
298 * pswGivenVect[0..39] - array of given vectors
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
299 * pswVects[0..359] (voice) [0..279] (unvoiced) - array of
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
300 * contiguous vectors to be decorrelated
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
301 * OUTPUTS: pswVects[0..359] (voice) [0..279] (unvoiced) - output vectors
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
302 * are written back over input vectors
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
303 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
304 * RETURN VALUE: none
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
305 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
306 * IMPLEMENTATION:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
307 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
308 * REFERENCE: Sub-clause 4.1.10.1 of GSM Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
309 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
310 * KEYWORDS: decorrelate, codewords, codevectors, orthogonalize, encoder
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
311 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
312 ****************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
313
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
314 void decorr(int iNumVects, Shortword pswGivenVect[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
315 Shortword pswVects[])
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
316 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
317
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
318 /*___________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
319 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
320 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
321 |___________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
322 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
323 int i,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
324 iLoopCnt;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
325 Shortword swNorm_energy,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
326 swTemp;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
327 Shortword swEShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
328 swCShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
329 swShiftSum,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
330 swQShift;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
331 Longword L_Energy,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
332 L_Temp1,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
333 L_Temp2,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
334 L_Accum;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
335
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
336 /*___________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
337 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
338 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
339 |___________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
340 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
341
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
342 /* Compute normalized energy in given vector */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
343 /*-------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
344 swEShift = g_corr1(pswGivenVect, &L_Energy);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
345 swNorm_energy = extract_h(L_Energy);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
346
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
347 if (swNorm_energy == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
348 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
349 return;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
350 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
351
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
352 /* Decorrelate vectors */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
353 /*---------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
354
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
355 for (iLoopCnt = 0; iLoopCnt < iNumVects; iLoopCnt++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
356 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
357
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
358 swCShift = g_corr2(pswGivenVect, &pswVects[iLoopCnt * S_LEN],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
359 &L_Temp1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
360 L_Temp2 = L_Temp1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
361 L_Temp1 = L_abs(L_Temp1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
362 swCShift = sub(swCShift, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
363 swShiftSum = sub(swCShift, swEShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
364 L_Temp1 = L_shr(L_Temp1, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
365 swTemp = divide_s(round(L_Temp1), swNorm_energy);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
366
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
367 if (L_Temp2 > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
368 swTemp = negate(swTemp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
369
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
370 swQShift = norm_s(swTemp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
371 swTemp = shl(swTemp, swQShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
372 swQShift = add(swShiftSum, swQShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
373
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
374 if (swQShift > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
375 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
376 swTemp = shift_r(swTemp, negate(swQShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
377 swQShift = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
378 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
379 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
380 swQShift = negate(swQShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
381
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
382 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
383 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
384 L_Accum = L_msu(0x00008000L, pswVects[i + iLoopCnt * S_LEN], SW_MIN);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
385 pswVects[iLoopCnt * S_LEN + i] = extract_h(L_mac(L_Accum, swTemp,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
386 shl(pswGivenVect[i], swQShift)));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
387 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
388 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
389 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
390
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
391 /***************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
392 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
393 * FUNCTION NAME: g_corr2
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
394 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
395 * PURPOSE: Calculates correlation between subframe vectors.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
396 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
397 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
398 * INPUT:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
399 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
400 * pswIn[0:39]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
401 * A subframe vector.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
402 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
403 * pswIn2[0:39]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
404 * A subframe vector.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
405 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
406 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
407 * OUTPUT:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
408 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
409 * *pL_out
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
410 * A Longword containing the normalized correlation
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
411 * between the input vectors.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
412 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
413 * RETURN:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
414 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
415 * swOut
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
416 * Number of right shifts which the accumulator was
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
417 * shifted to normalize it. Negative number implies
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
418 * a left shift, and therefore an energy larger than
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
419 * 1.0.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
420 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
421 * REFERENCE: Sub-clauses 4.1.10.1 and 4.1.11.1 of GSM
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
422 * Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
423 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
424 * keywords: energy, autocorrelation, correlation, g_corr2
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
425 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
426 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
427 **************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
428
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
429 Shortword g_corr2(Shortword *pswIn, Shortword *pswIn2,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
430 Longword *pL_out)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
431 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
432
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
433 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
434 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
435 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
436 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
437 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
438
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
439 Longword L_sum;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
440 Shortword swEngyLShft;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
441 int i;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
442
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
443 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
444 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
445 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
446 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
447 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
448
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
449 /* Calculate energy in subframe vector (40 samples) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
450 /*--------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
451
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
452 L_sum = L_mult(pswIn[0], pswIn2[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
453 for (i = 1; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
454 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
455 L_sum = L_mac(L_sum, pswIn[i], pswIn2[i]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
456 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
457
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
458
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
459
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
460 if (L_sum != 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
461 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
462
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
463 /* Normalize the energy in the output Longword */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
464 /*---------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
465
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
466 swEngyLShft = norm_l(L_sum);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
467 *pL_out = L_shl(L_sum, swEngyLShft); /* normalize output
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
468 * Longword */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
469 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
470 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
471 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
472
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
473 /* Special case: energy is zero */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
474 /*------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
475
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
476 *pL_out = L_sum;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
477 swEngyLShft = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
478 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
479
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
480 return (swEngyLShft);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
481 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
482
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
483 /***************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
484 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
485 * FUNCTION NAME: g_quant_vl
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
486 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
487 * PURPOSE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
488 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
489 * Joint quantization of excitation gains.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
490 * GS represents the subframe energy relative to the frame energy.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
491 * P0 represents the relative contribution of the first exctitation
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
492 * source to the total excitation.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
493 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
494 * INPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
495 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
496 * swUVCode - voicing level (Mode 0-3)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
497 * pswWInput[0:39] - weighted input p(n) (used in mode 0-3)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
498 * swWIShift - weighted input shift factor (right shift, 0,1, or 2)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
499 * pswWLTPVec[0:39] - weighted pitch excitation vector (used in mode 1-3)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
500 * pswWVSVec1[0:39] - weighted 1st v-s codevector (used in mode 0-3)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
501 * pswWVSVec2[0:39] - weighted 2nd v-s codevector (used in mode 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
502 * snsRs00 - square root of RS/pitch excitation energy (used in mode 1-3)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
503 * snsRs11 - square root of RS/1st v-s codevector energy
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
504 * (used in mode 0-3)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
505 * snsRs22 - square root of RS/2nd v-s codevector energy (used in mode 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
506 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
507 * pppsrGsp0[0:3][0:31][0:4] - lookup table
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
508 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
509 * OUTPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
510 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
511 * None
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
512 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
513 * RETURN VALUE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
514 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
515 * siCode - output quantized gain code (5 bits)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
516 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
517 * IMPLEMENTATION:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
518 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
519 * Calculates first the parameters required for error equation 7.21:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
520 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
521 * Rcc(k,j) k = 0,1, j=k,1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
522 * Rx(k) k = 0,1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
523 * RS
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
524 * Rpc(k) k = 0,1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
525 * a,b,c,d,e
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
526 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
527 * The constant terms in equation 7.21 are stored in ROM instead of GS
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
528 * and P0. There is one vector quantizer for each voicing state.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
529 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
530 * REFERENCE: Sub-clause 4.1.11 and 4.1.11.1 of GSM Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
531 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
532 * KEYWORDS: gain quantization, energy domain transforms, p0, gs
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
533 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
534 **************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
535
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
536 Shortword g_quant_vl(Shortword swUVCode,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
537 Shortword pswWInput[], Shortword swWIShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
538 Shortword pswWLTPVec[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
539 Shortword pswWVSVec1[], Shortword pswWVSVec2[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
540 struct NormSw snsRs00, struct NormSw snsRs11,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
541 struct NormSw snsRs22)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
542 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
543
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
544 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
545 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
546 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
547 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
548 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
549
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
550 Longword L_Temp,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
551 L_Temp2;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
552 Shortword swShift;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
553 struct NormSw ErrorTerm[6];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
554 Shortword i,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
555 siCode,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
556 siNormShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
557 siNormMin;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
558
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
559 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
560 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
561 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
562 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
563 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
564
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
565 /* Test voicing level, mode 0-3 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
566 /* ---------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
567
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
568 if (swUVCode == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
569 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
570
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
571 /* Unvoiced */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
572 /* -------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
573
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
574 /* Compute cross correlation Rpc(0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
575 /* -------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
576
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
577
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
578 ErrorTerm[0].sh = g_corr2(pswWInput, pswWVSVec1, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
579 ErrorTerm[0].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
580
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
581 /* Compute cross correlation Rpc(1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
582 /* -------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
583
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
584 ErrorTerm[1].sh = g_corr2(pswWInput, pswWVSVec2, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
585 ErrorTerm[1].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
586
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
587 /* Compute cross correlation Rcc(0,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
588 /* ---------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
589
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
590
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
591 ErrorTerm[2].sh = g_corr2(pswWVSVec1, pswWVSVec2, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
592 ErrorTerm[2].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
593
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
594 /* Compute correlation Rcc(0,0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
595 /* ---------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
596
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
597 ErrorTerm[3].sh = g_corr1(pswWVSVec1, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
598 ErrorTerm[3].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
599
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
600 /* Compute correlation Rcc(1,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
601 /* ---------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
602
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
603 ErrorTerm[4].sh = g_corr1(pswWVSVec2, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
604 ErrorTerm[4].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
605
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
606 /* Compute correlation Rpp */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
607 /* ----------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
608
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
609 ErrorTerm[5].sh = g_corr1(pswWInput, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
610 ErrorTerm[5].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
611
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
612 /* Compute gain tweak factor, adjusts A and B error coefs */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
613 /* ------------------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
614 gainTweak(&ErrorTerm[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
615
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
616 /* Compute error coefficient A, equation 5.22 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
617 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
618
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
619 L_Temp = L_mult(ErrorTerm[0].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
620 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
621 ErrorTerm[0].sh = add(ErrorTerm[0].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
622 ErrorTerm[0].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
623 ErrorTerm[0].sh = add(ErrorTerm[0].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
624 siNormMin = ErrorTerm[0].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
625
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
626 /* Compute error coefficient B, equation 5.23 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
627 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
628
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
629 L_Temp = L_mult(ErrorTerm[1].man, snsRs22.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
630 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
631 ErrorTerm[1].sh = add(ErrorTerm[1].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
632 ErrorTerm[1].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
633 ErrorTerm[1].sh = add(ErrorTerm[1].sh, snsRs22.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
634 if (sub(ErrorTerm[1].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
635 siNormMin = ErrorTerm[1].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
636
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
637 /* Compute error coefficient C, equation 5.24 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
638 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
639
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
640 L_Temp = L_mult(ErrorTerm[2].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
641 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
642 ErrorTerm[2].sh = add(ErrorTerm[2].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
643 ErrorTerm[2].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
644 L_Temp = L_mult(ErrorTerm[2].man, snsRs22.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
645 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
646 ErrorTerm[2].sh = add(ErrorTerm[2].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
647 ErrorTerm[2].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
648 ErrorTerm[2].sh = add(ErrorTerm[2].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
649 ErrorTerm[2].sh = add(ErrorTerm[2].sh, snsRs22.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
650 ErrorTerm[2].sh = add(ErrorTerm[2].sh, swWIShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
651 if (sub(ErrorTerm[2].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
652 siNormMin = ErrorTerm[2].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
653
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
654 /* Compute error coefficient D, equation 5.25 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
655 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
656
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
657 L_Temp = L_mult(ErrorTerm[3].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
658 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
659 ErrorTerm[3].sh = add(ErrorTerm[3].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
660 ErrorTerm[3].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
661 L_Temp = L_mult(ErrorTerm[3].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
662 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
663 ErrorTerm[3].sh = add(ErrorTerm[3].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
664 ErrorTerm[3].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
665 ErrorTerm[3].sh = add(ErrorTerm[3].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
666 ErrorTerm[3].sh = add(ErrorTerm[3].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
667 ErrorTerm[3].sh = add(ErrorTerm[3].sh, swWIShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
668
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
669 if (sub(ErrorTerm[3].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
670 siNormMin = ErrorTerm[3].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
671
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
672 /* Compute error coefficient E, equation 5.26 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
673 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
674
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
675 L_Temp = L_mult(ErrorTerm[4].man, snsRs22.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
676 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
677 ErrorTerm[4].sh = add(ErrorTerm[4].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
678 ErrorTerm[4].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
679 L_Temp = L_mult(ErrorTerm[4].man, snsRs22.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
680 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
681 ErrorTerm[4].sh = add(ErrorTerm[4].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
682 ErrorTerm[4].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
683 ErrorTerm[4].sh = add(ErrorTerm[4].sh, snsRs22.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
684 ErrorTerm[4].sh = add(ErrorTerm[4].sh, snsRs22.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
685 ErrorTerm[4].sh = add(ErrorTerm[4].sh, swWIShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
686
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
687 if (sub(ErrorTerm[4].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
688 siNormMin = ErrorTerm[4].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
689
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
690 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
691
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
692 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
693 { /* Voicing level */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
694
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
695 /* Voiced */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
696 /* ------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
697
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
698 /* Compute cross correlation Rpc(0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
699 /* -------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
700
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
701
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
702 ErrorTerm[0].sh = g_corr2(pswWInput, pswWLTPVec, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
703 ErrorTerm[0].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
704
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
705 /* Compute cross correlation Rpc(1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
706 /* -------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
707
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
708
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
709 ErrorTerm[1].sh = g_corr2(pswWInput, pswWVSVec1, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
710 ErrorTerm[1].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
711
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
712 /* Compute cross correlation Rcc(0,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
713 /* ---------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
714
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
715
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
716 ErrorTerm[2].sh = g_corr2(pswWLTPVec, pswWVSVec1, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
717 ErrorTerm[2].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
718
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
719 /* Compute correlation Rcc(0,0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
720 /* ---------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
721
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
722 ErrorTerm[3].sh = g_corr1(pswWLTPVec, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
723 ErrorTerm[3].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
724
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
725 /* Compute correlation Rcc(1,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
726 /* ---------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
727
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
728 ErrorTerm[4].sh = g_corr1(pswWVSVec1, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
729 ErrorTerm[4].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
730
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
731 /* Compute correlation Rpp */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
732 /* ----------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
733
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
734 ErrorTerm[5].sh = g_corr1(pswWInput, &L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
735 ErrorTerm[5].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
736
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
737 /* Compute gain tweak factor, adjusts A and B error coefs */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
738 /* ------------------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
739
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
740 gainTweak(&ErrorTerm[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
741
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
742 /* Compute error coefficient A, equation 5.22 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
743 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
744
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
745 L_Temp = L_mult(ErrorTerm[0].man, snsRs00.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
746 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
747 ErrorTerm[0].sh = add(ErrorTerm[0].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
748 ErrorTerm[0].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
749 ErrorTerm[0].sh = add(ErrorTerm[0].sh, snsRs00.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
750 siNormMin = ErrorTerm[0].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
751
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
752 /* Compute error coefficient B, equation 5.23 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
753 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
754
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
755 L_Temp = L_mult(ErrorTerm[1].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
756 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
757 ErrorTerm[1].sh = add(ErrorTerm[1].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
758 ErrorTerm[1].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
759 ErrorTerm[1].sh = add(ErrorTerm[1].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
760 if (sub(ErrorTerm[1].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
761 siNormMin = ErrorTerm[1].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
762
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
763 /* Compute error coefficient C, equation 5.24 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
764 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
765
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
766 L_Temp = L_mult(ErrorTerm[2].man, snsRs00.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
767 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
768 ErrorTerm[2].sh = add(ErrorTerm[2].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
769 ErrorTerm[2].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
770 L_Temp = L_mult(ErrorTerm[2].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
771 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
772 ErrorTerm[2].sh = add(ErrorTerm[2].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
773 ErrorTerm[2].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
774 ErrorTerm[2].sh = add(ErrorTerm[2].sh, snsRs00.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
775 ErrorTerm[2].sh = add(ErrorTerm[2].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
776 ErrorTerm[2].sh = add(ErrorTerm[2].sh, swWIShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
777 if (sub(ErrorTerm[2].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
778 siNormMin = ErrorTerm[2].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
779
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
780 /* Compute error coefficient D, equation 5.25 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
781 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
782
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
783 L_Temp = L_mult(ErrorTerm[3].man, snsRs00.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
784 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
785 ErrorTerm[3].sh = add(ErrorTerm[3].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
786 ErrorTerm[3].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
787 L_Temp = L_mult(ErrorTerm[3].man, snsRs00.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
788 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
789 ErrorTerm[3].sh = add(ErrorTerm[3].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
790 ErrorTerm[3].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
791 ErrorTerm[3].sh = add(ErrorTerm[3].sh, snsRs00.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
792 ErrorTerm[3].sh = add(ErrorTerm[3].sh, snsRs00.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
793 ErrorTerm[3].sh = add(ErrorTerm[3].sh, swWIShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
794 if (sub(ErrorTerm[3].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
795 siNormMin = ErrorTerm[3].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
796
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
797 /* Compute error coefficient E, equation 5.26 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
798 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
799
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
800 L_Temp = L_mult(ErrorTerm[4].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
801 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
802 ErrorTerm[4].sh = add(ErrorTerm[4].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
803 ErrorTerm[4].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
804 L_Temp = L_mult(ErrorTerm[4].man, snsRs11.man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
805 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
806 ErrorTerm[4].sh = add(ErrorTerm[4].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
807 ErrorTerm[4].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
808 ErrorTerm[4].sh = add(ErrorTerm[4].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
809 ErrorTerm[4].sh = add(ErrorTerm[4].sh, snsRs11.sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
810 ErrorTerm[4].sh = add(ErrorTerm[4].sh, swWIShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
811 if (sub(ErrorTerm[4].sh, siNormMin) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
812 siNormMin = ErrorTerm[4].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
813
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
814 } /* Voicing level */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
815
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
816
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
817
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
818 /* Normalize all error coefficients to same shift count */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
819 /* ---------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
820
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
821 for (i = 0; i < GSP0_VECTOR_SIZE; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
822 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
823 L_Temp = L_deposit_h(ErrorTerm[i].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
824 siNormShift = sub(ErrorTerm[i].sh, siNormMin);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
825 if (siNormShift > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
826 L_Temp = L_shr(L_Temp, siNormShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
827 ErrorTerm[i].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
828 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
829
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
830
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
831 /* Codebook search, find max of error equation 5.21 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
832 /* ------------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
833
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
834 L_Temp2 = 0x80000000;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
835
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
836 for (i = 0; i < GSP0_NUM; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
837 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
838
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
839 L_Temp = L_mult(pppsrGsp0[swUVCode][i][0], ErrorTerm[0].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
840 L_Temp = L_mac(L_Temp, pppsrGsp0[swUVCode][i][1], ErrorTerm[1].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
841 L_Temp = L_mac(L_Temp, pppsrGsp0[swUVCode][i][2], ErrorTerm[2].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
842 L_Temp = L_mac(L_Temp, pppsrGsp0[swUVCode][i][3], ErrorTerm[3].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
843 L_Temp = L_mac(L_Temp, pppsrGsp0[swUVCode][i][4], ErrorTerm[4].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
844 if (L_sub(L_Temp2, L_Temp) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
845 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
846 L_Temp2 = L_Temp;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
847 siCode = i; /* Save best code */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
848 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
849 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
850 return (siCode);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
851 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
852
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
853 /***************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
854 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
855 * FUNCTION NAME: gainTweak
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
856 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
857 * PURPOSE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
858 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
859 * Calculates gain bias factor, limits it, and
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
860 * applies it to A and B error coefficients.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
861 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
862 * INPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
863 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
864 * psErrorTerm[0:5] - array (6) of error coefficients in floating
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
865 * point format
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
866 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
867 * OUTPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
868 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
869 * psErrorTerm[0:5] - array of gain adjusted A and B error coefficients
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
870 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
871 * RETURN VALUE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
872 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
873 * None
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
874 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
875 * IMPLEMENTATION:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
876 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
877 * The gain tweak is:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
878 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
879 * Rpp*Rcc(0,0)*Rcc(1,1) - Rpp*Rcc(0,1)*Rcc(0,1)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
880 *sqrt(---------------------------------------------------------------------)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
881 * Rcc(0,0)*Rpc(1)*Rpc(1)-2*Rcc(0,1)*Rpc(0)*Rpc(1)+Rcc(1,1)*Rpc(0)*Rpc(0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
882 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
883 * REFERENCE: Sub-clause 4.1.11.1 of GSM Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
884 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
885 * KEYWORDS: gain tweak, g_quant_vl
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
886 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
887 **************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
888
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
889 void gainTweak(struct NormSw *psErrorTerm)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
890 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
891
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
892 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
893 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
894 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
895 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
896 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
897
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
898 Longword L_Temp;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
899 Shortword swTemp,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
900 swNum,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
901 swDenom,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
902 swGainTweak,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
903 swShift;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
904 struct NormSw terms[5];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
905 Shortword i,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
906 siNormShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
907 siNorm;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
908
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
909 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
910 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
911 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
912 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
913 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
914
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
915 /* Calculate third order terms in the gain tweak factor, while
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
916 * maintaining the largest exponent */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
917 /* ---------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
918
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
919 /* Compute Rpp*Rcc(0,0)*Rcc(1,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
920 /* ----------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
921
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
922 L_Temp = L_mult(psErrorTerm[3].man, psErrorTerm[5].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
923 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
924 terms[0].sh = add(psErrorTerm[3].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
925 terms[0].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
926 L_Temp = L_mult(terms[0].man, psErrorTerm[4].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
927 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
928 terms[0].sh = add(terms[0].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
929 terms[0].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
930 terms[0].sh = add(terms[0].sh, psErrorTerm[4].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
931 terms[0].sh = add(terms[0].sh, psErrorTerm[5].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
932 /* Init. siNorm */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
933 siNorm = terms[0].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
934
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
935 /* Compute Rpp*Rcc(0,1)*Rcc(0,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
936 /* ----------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
937
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
938 L_Temp = L_mult(psErrorTerm[2].man, psErrorTerm[2].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
939 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
940 terms[1].sh = add(psErrorTerm[2].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
941 terms[1].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
942 L_Temp = L_mult(terms[1].man, psErrorTerm[5].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
943 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
944 terms[1].sh = add(terms[1].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
945 terms[1].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
946 terms[1].sh = add(terms[1].sh, psErrorTerm[2].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
947 terms[1].sh = add(terms[1].sh, psErrorTerm[5].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
948 if (sub(terms[1].sh, siNorm) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
949 siNorm = terms[1].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
950
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
951 /* Compute Rcc(0,0)*Rpc(1)*Rpc(1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
952 /* ------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
953
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
954 L_Temp = L_mult(psErrorTerm[1].man, psErrorTerm[1].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
955 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
956 terms[2].sh = add(psErrorTerm[1].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
957 terms[2].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
958 L_Temp = L_mult(terms[2].man, psErrorTerm[3].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
959 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
960 terms[2].sh = add(terms[2].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
961 terms[2].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
962 terms[2].sh = add(terms[2].sh, psErrorTerm[1].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
963 terms[2].sh = add(terms[2].sh, psErrorTerm[3].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
964 if (sub(terms[2].sh, siNorm) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
965 siNorm = terms[2].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
966
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
967 /* Compute 2*Rcc(0,1)*Rpc(0)*Rpc(1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
968 /* -------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
969
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
970 L_Temp = L_mult(psErrorTerm[0].man, psErrorTerm[1].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
971 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
972 terms[3].sh = add(psErrorTerm[0].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
973 terms[3].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
974 L_Temp = L_mult(terms[3].man, psErrorTerm[2].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
975 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
976 terms[3].sh = add(terms[3].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
977 terms[3].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
978 terms[3].sh = add(terms[3].sh, psErrorTerm[1].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
979 terms[3].sh = add(terms[3].sh, psErrorTerm[2].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
980 terms[3].sh = sub(terms[3].sh, 1); /* Multiply by 2 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
981 if (sub(terms[3].sh, siNorm) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
982 siNorm = terms[3].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
983
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
984 /* Compute Rcc(1,1)*Rpc(0)*Rpc(0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
985 /* ------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
986
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
987 L_Temp = L_mult(psErrorTerm[0].man, psErrorTerm[4].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
988 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
989 terms[4].sh = add(psErrorTerm[0].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
990 terms[4].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
991 L_Temp = L_mult(terms[4].man, psErrorTerm[0].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
992 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
993 terms[4].sh = add(terms[4].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
994 terms[4].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
995 terms[4].sh = add(terms[4].sh, psErrorTerm[0].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
996 terms[4].sh = add(terms[4].sh, psErrorTerm[4].sh);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
997 if (sub(terms[4].sh, siNorm) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
998 siNorm = terms[4].sh;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
999
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1000 /* Normalize all terms to same shift count */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1001 /* --------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1002
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1003 for (i = 0; i < 5; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1004 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1005 L_Temp = L_deposit_h(terms[i].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1006 siNormShift = sub(terms[i].sh, siNorm);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1007 if (siNormShift > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1008 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1009 L_Temp = L_shr(L_Temp, siNormShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1010 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1011 terms[i].man = round(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1012 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1013
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1014 /* Calculate numerator */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1015 /* ------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1016
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1017 /* Rpp*Rcc(0,0)*Rcc(1,1) - Rpp*Rcc(0,1)*Rcc(0,1) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1018 /* --------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1019
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1020 swNum = sub(terms[0].man, terms[1].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1021
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1022 /* Skip gain tweak if numerator =< 0 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1023 /* --------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1024
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1025 if (swNum <= 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1026 return;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1027
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1028 /* Calculate denominator */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1029 /* --------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1030
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1031 /* Rcc(0,0)*Rpc(1)*Rpc(1)-2*Rcc(0,1)*Rpc(0)*Rpc(1)+Rcc(1,1)*Rpc(0)*Rpc(0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1032 /*----------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1033
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1034 swDenom = sub(terms[2].man, terms[3].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1035 swDenom = add(swDenom, terms[4].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1036
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1037 /* Skip gain tweak if denominator =< 0 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1038 /* ----------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1039
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1040 if (swDenom <= 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1041 return;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1042
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1043 /* Compare numerator to denominator, skip if tweak =< 1 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1044 /* ---------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1045
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1046 swTemp = sub(swNum, swDenom);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1047 if (swTemp <= 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1048 return;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1049
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1050 /* Normalize and do divide */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1051 /* ----------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1052
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1053 swShift = norm_s(swNum);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1054 siNormShift = sub(swShift, 1); /* Multiply by 2 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1055 swNum = shl(swNum, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1056 swNum = shr(swNum, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1057 swShift = norm_s(swDenom);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1058 siNormShift = sub(siNormShift, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1059 swDenom = shl(swDenom, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1060 swTemp = divide_s(swNum, swDenom);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1061 swShift = norm_s(swTemp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1062 siNormShift = add(siNormShift, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1063 L_Temp = L_shl(L_deposit_h(swTemp), swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1064
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1065 /* Calculate square root */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1066 /* --------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1067
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1068 swTemp = sqroot(L_Temp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1069
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1070 /* If odd no. of shifts compensate by sqrt(0.5) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1071 /* -------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1072
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1073 if (siNormShift & 1)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1074 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1075 L_Temp = L_mult(0x5a82, swTemp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1076 siNormShift = sub(siNormShift, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1077 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1078 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1079 L_Temp = L_deposit_h(swTemp);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1080 siNormShift = shr(siNormShift, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1081 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1082 siNormShift = add(siNormShift, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1083 swGainTweak = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1084
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1085 /* If exponent > -1, skip gain tweak */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1086 /* --------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1087
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1088 if (add(1, siNormShift) > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1089 return;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1090
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1091 /* If exponent < -1, limit gain tweak to GTWEAKMAX */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1092 /* ----------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1093
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1094 if (add(1, siNormShift) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1095 swGainTweak = GTWEAKMAX;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1096 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1097 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1098
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1099 /* If exponent = -1, compare to GTWEAKMAX */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1100 /* -------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1101
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1102 if (sub(GTWEAKMAX, swGainTweak) < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1103 swGainTweak = GTWEAKMAX;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1104 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1105
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1106 /* Multiply gain tweak factor on A and B error terms */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1107 /* ------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1108
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1109 L_Temp = L_mult(swGainTweak, psErrorTerm[0].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1110 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1111 psErrorTerm[0].sh = add(psErrorTerm[0].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1112 psErrorTerm[0].sh = sub(psErrorTerm[0].sh, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1113 psErrorTerm[0].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1114
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1115 L_Temp = L_mult(swGainTweak, psErrorTerm[1].man);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1116 swShift = norm_s(extract_h(L_Temp));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1117 psErrorTerm[1].sh = add(psErrorTerm[1].sh, swShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1118 psErrorTerm[1].sh = sub(psErrorTerm[1].sh, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1119 psErrorTerm[1].man = round(L_shl(L_Temp, swShift));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1120
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1121 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1122
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1123 /***************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1124 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1125 * FUNCTION NAME: hnwFilt
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1126 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1127 * PURPOSE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1128 * Performs the filtering operation for harmonic noise weighting.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1129 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1130 * INPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1131 * pswInSample[0:39] - array of input speech signal,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1132 * pswInSample points to the "oldest" sample of the
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1133 * current subframe to be hnw filtered, S_LEN samples
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1134 * will be stored in this array, this data is not
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1135 * explicitly modified.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1136 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1137 * pswState[0:183] - array of state of samples, the most
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1138 * recent sample is the tail of the state buffer,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1139 * used only for full- state filtering, this data is
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1140 * not modified
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1141 * pswInCoef[0:5] - array of unmodified filter coefficients
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1142 * iStateOffset - address offset from a sample in the subframe back
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1143 * to the oldest element of the state used in the interpolating
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1144 * filter for that sample. Although the subframe samples and
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1145 * state information can come from different buffers, this
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1146 * offset represents the case in which the state and sample
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1147 * information are in the same buffer
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1148 * swZeroState - indicate if the interpolating filter should be
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1149 * "zero-state" filtering or "full-state" filtering:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1150 * 0 ==> zero-state filtering
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1151 * !0 ==> full-state filtering
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1152 * iNumSamples - the number of samples that are to be filtered,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1153 * required to be less than or equal to S_LEN in order to
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1154 * correctly match speech samples with sample states for the
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1155 * filtering procedure
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1156 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1157 * OUTPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1158 * pswOutSample[0:39] - array of output filtered speech signal,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1159 * pswOutSample points to the "oldest" sample location, S_LEN
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1160 * filtered samples will be stored at the buffer associated with
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1161 * this array, can implicitly overwrite input samples with
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1162 * with filtered samples by setting pswOutSample = pswInSample
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1163 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1164 * RETURN VALUE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1165 * none
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1166 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1167 * IMPLEMENTATION:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1168 * The harmonic noise weighting filter is implemented in reverse
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1169 * temporal order, from most recent input sample backwards through
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1170 * the input sample array. The procedure follows the equation:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1171 * x(n) = x(n) - PW_COEF*x(n - lag)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1172 * where the PW_COEF is the pitch weighting for the current
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1173 * subframe and lag is the full-resolution lag for the current
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1174 * subframe. x(n - lag) is found by implementing a CG_INT_MACS-
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1175 * order FIR interpolating filter
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1176 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1177 * Harmonic noise weighting is discussed in secion 5.5.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1178 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1179 * REFERENCE: Sub-clause 4.1.9 of GSM Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1180 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1181 * KEYWORDS: T_SUB, LAG, HNW_FILT, PW_COEF, CG_INT_MACS, S_LEN, LSMAX
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1182 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1183 **************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1184
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1185 void hnwFilt(Shortword pswInSample[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1186 Shortword pswOutSample[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1187 Shortword pswState[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1188 Shortword pswInCoef[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1189 int iStateOffset,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1190 Shortword swZeroState,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1191 int iNumSamples)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1192 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1193
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1194 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1195 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1196 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1197 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1198 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1199 Longword L_temp;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1200 int i,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1201 j;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1202
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1203 int iStatIndx = S_LEN - 1 + iStateOffset;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1204 int iStatIndx1 = S_LEN + iStateOffset;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1205
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1206 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1207 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1208 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1209 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1210 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1211
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1212 if (swZeroState == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1213 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1214
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1215 /* zero state response assumes input and output arrays are the same */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1216 /*------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1217
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1218 for (i = 0; i < iNumSamples; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1219 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1220
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1221 /* get input with rounding */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1222 /*-------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1223 L_temp = L_mac((long) 16384, pswInSample[S_LEN - i - 1], 0x4000);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1224
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1225 for (j = 5; (j >= 0) && (iStatIndx - i + j >= 0); j--)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1226 /* evaluate taps 1 - 6 that point to input */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1227 /*-----------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1228 L_temp = L_mac(L_temp, pswInSample[iStatIndx - i + j], pswInCoef[j]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1229
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1230 pswOutSample[S_LEN - 1 - i] = extract_h(L_shl(L_temp, 1));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1231 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1232 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1233 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1234 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1235 for (i = 0; i < iNumSamples; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1236 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1237
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1238 /* get input with rounding */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1239 /*-------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1240 L_temp = L_mac((long) 16384, pswInSample[S_LEN - i - 1], 0x4000);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1241
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1242 for (j = 5; (j >= 0) && (iStatIndx - i + j >= 0); j--)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1243 /* evaluate taps 1 - 6 that point to input */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1244 /*-----------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1245 L_temp = L_mac(L_temp, pswInSample[iStatIndx - i + j], pswInCoef[j]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1246
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1247 for (; (j >= 0); j--)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1248 /* evaluate taps 1 - 6 that point to state */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1249 /*----------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1250 L_temp = L_mac(L_temp, pswState[iStatIndx1 - i + j], pswInCoef[j]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1251
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1252 pswOutSample[S_LEN - 1 - i] = extract_h(L_shl(L_temp, 1));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1253 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1254 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1255
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1256 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1257
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1258 /***************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1259 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1260 * FUNCTION NAME: sfrmAnalysis
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1261 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1262 * PURPOSE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1263 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1264 * Determines the synthetic excitation for a subframe.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1265 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1266 * INPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1267 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1268 * pswWSpeech
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1269 * Input weighted speech vector to be matched.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1270 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1271 * swVoicingMode
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1272 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1273 * Voicing mode 0,1,2 or 3. 0 is unvoiced. A
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1274 * frame parameter.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1275 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1276 * snsSqrtRs
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1277 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1278 * Normalized estimate of the excitation energy
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1279 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1280 * pswHCoefs
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1281 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1282 * Coefficientss used in weighted synthesis filter,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1283 * H(z), (a negated version is used). pswHCoefs[0]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1284 * is t=-1 tap, pswHCoefs[9] is t=-10 tap.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1285 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1286 * pswLagList
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1287 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1288 * List of lags to be searched in the long-term
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1289 * predictor, determined by the open-loop lag search.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1290 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1291 * siNumLags
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1292 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1293 * Number of lags in pswLagList.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1294 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1295 * swPitch
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1296 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1297 * Fundamental pitch value to be used in harmonic-
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1298 * noise-weighting, actualPitch*OS_FCTR.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1299 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1300 * swHNWCoef
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1301 * Coefficient of the harmonic-noise-weighting filter.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1302 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1303 * ppsrCGIntFilt[0:5][0:5]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1304 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1305 * polyphase interpolation filter,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1306 * ppsrCGIntFilt[iTap][iPhase], OS_FCTR phases,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1307 * CG_INT_MACS taps per phase. Used to construct
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1308 * sequences delayed by fractional lags for Harmonic-
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1309 * Noise-Weighting.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1310 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1311 * pppsrUvCodeVec[0:1][0:6][0:39]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1312 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1313 * unvoiced codebooks:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1314 * pppsrUvCodeVec[codeBook][vectorNumber][time]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1315 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1316 * pppsrVcdCodeVec[0][0:8][0:39]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1317 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1318 * voiced codebook:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1319 * pppsrVcdCodeVect[codebook(=0)][vectorNumber][time]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1320 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1321 * swSP
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1322 * speech flag (DTX mode)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1323 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1324 * OUTPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1325 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1326 * psiLagCode
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1327 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1328 * Lag code: frame- or delta-, or zero if unvoiced.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1329 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1330 * psiVSCode1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1331 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1332 * First vector-sum codebook code.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1333 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1334 * psiVSCode2
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1335 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1336 * Second vector-sum codebook code, or zero if voiced.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1337 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1338 * psiGsp0Code
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1339 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1340 * Gain quantizer code.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1341 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1342 * DESCRIPTION:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1343 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1344 * sfrmAnalysis() is the calling function for the subframe analysis
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1345 * functions. All subframe based processing is done by it and its
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1346 * daughter functions. All functions in this file are called by
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1347 * sfrmAnalysis() or one of its daughter functions. As can be seen
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1348 * above, this routine will select the LTP lag, the VSELP
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1349 * codevector(s) and the GSP0 codeword. It is called by
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1350 * speechEncoder().
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1351 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1352 * The subframe processing can follow one of two paths depending on
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1353 * whether the frame is voiced or unvoiced. These two paths are now
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1354 * described.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1355 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1356 * First the zero input response of H(z) is calculated (lpcZiIir());
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1357 * then subtracted from the weighted speech (W(z)). The outcome, p(n)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1358 * or pswWSVec[], will be the vector matched by the first excitation
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1359 * vector (either adaptive or first VSELP codevector). The p(n)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1360 * vector is scaled to prevent overflow.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1361 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1362 * If the frame is voiced, the closed loop lag search (closedLoop())
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1363 * is performed. An adaptive codevector lag is selected. Using the
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1364 * open loop "pitch" value, the harmonic noise weighting
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1365 * coefficients are obtained. The adaptive codevector is
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1366 * reconstructed (fp_ex()), and weighted through the (zero state)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1367 * spectral (lpcZsIir()) and harmonic noise weighting filters
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1368 * (hnwFilt()).
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1369 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1370 * The basis vectors are also filtered through the weighting
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1371 * filters. If the frame is unvoiced, there is no spectral noise
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1372 * weighting.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1373 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1374 * If voiced the VSELP basis vectors are decorrelated (decorr())
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1375 * from the selected adaptive (LTP) codevector, and the VSELP
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1376 * codevector search is initiated (v_srch()).
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1377 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1378 * If unvoiced, the first VSELP codevector search is performed
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1379 * (without any decorrelation). After a vector from the first VSELP
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1380 * codebook has been selected, the second set of basis vectors are
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1381 * decorrelated from the selected vector.
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1382 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1383 * Once all the excitation vectors have been selected, the gain
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1384 * quantizer is called, g_quant_vl().
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1385 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1386 * Finally, once all subframe parameters have been found, the
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1387 * selected excitation is scaled according to GSP0 (scaleExcite()),
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1388 * and the composite excitation is entered into the long term
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1389 * predictor history. The final excitation is also used to update
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1390 * H(z) and C(z).
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1391 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1392 * REFERENCE: Sub-clauses 4.1.8.5, 4.1.9 - 4.1.12 of GSM
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1393 * Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1394 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1395 * Keywords: codewords, lag, codevectors, gsp0, decoding, analysis, t_sub
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1396 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1397 **************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1398
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1399 void sfrmAnalysis(Shortword *pswWSpeech,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1400 Shortword swVoicingMode,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1401 struct NormSw snsSqrtRs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1402 Shortword *pswHCoefs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1403 Shortword *pswLagList,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1404 short siNumLags,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1405 Shortword swPitch,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1406 Shortword swHNWCoef,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1407 short *psiLagCode,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1408 short *psiVSCode1,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1409 short *psiVSCode2,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1410 short *psiGsp0Code,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1411 Shortword swSP)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1412 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1413
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1414 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1415 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1416 | Static Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1417 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1418 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1419
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1420 static short siPrevLagCode;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1421
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1422 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1423 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1424 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1425 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1426 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1427
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1428 short i,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1429 j,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1430 siCode,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1431 siIntPitch,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1432 siRemainder;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1433 short siHnwOffset,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1434 siHnwNum,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1435 siNumBasisVecs;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1436
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1437 Shortword swLag,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1438 swPnEnergy,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1439 swPnShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1440 swSampleA;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1441 Shortword swLtpShift;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1442
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1443 Longword L_PnEnergy;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1444
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1445 struct NormSw snsRs00,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1446 snsRs11,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1447 snsRs22;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1448
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1449 Shortword pswWSVec[S_LEN],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1450 pswTempVec[S_LEN];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1451 Shortword pswPVec[S_LEN],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1452 pswWPVec[S_LEN];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1453 Shortword ppswVselpEx[2][S_LEN],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1454 ppswWVselpEx[2][S_LEN];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1455 Shortword pswWBasisVecs[9 * S_LEN],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1456 pswBitArray[9];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1457 Shortword pswHNWCoefs[CG_INT_MACS];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1458
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1459 Shortword *pswLtpStateOut;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1460
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1461 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1462 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1463 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1464 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1465 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1466
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1467 pswLtpStateOut = pswLtpStateBase + LTP_LEN;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1468
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1469 if (swSP == 1) /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1470 { /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1471
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1472 /* if not in CNI mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1473 /*--------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1474
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1475 /* Get the zero-input response of H(z) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1476 /*-------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1477
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1478 lpcZiIir(pswHCoefs, pswHState, pswTempVec);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1479
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1480 /* Subtract the zero-input response of H(z) from W(z)-weighted speech. */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1481 /* The result is the vector to match for the adaptive codebook (long- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1482 /* term-predictor) search in voiced modes, or the vector to match for */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1483 /* all synthetic excitation searches in unvoiced mode. */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1484 /*---------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1485
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1486 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1487 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1488
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1489 pswWSVec[i] = sub(pswWSpeech[i], pswTempVec[i]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1490 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1491
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1492 /* scale the weighted speech vector (p[n]) s.t. its energy is strictly */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1493 /* less than 1.0 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1494 /*---------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1495
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1496 swSampleA = shr(pswWSVec[0], 2);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1497 L_PnEnergy = L_mac(0x001dff4cL, swSampleA, swSampleA);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1498 for (i = 1; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1499 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1500 swSampleA = shr(pswWSVec[i], 2); /* reduces energy by 16 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1501 L_PnEnergy = L_mac(L_PnEnergy, swSampleA, swSampleA);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1502 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1503
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1504 swPnEnergy = round(L_PnEnergy);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1505
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1506 if (sub(swPnEnergy, 0x7ff) <= 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1507 { /* E = [0..0x7ff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1508
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1509 swPnShift = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1510
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1511 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1512 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1513 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1514
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1515 if (sub(swPnEnergy, 0x1fff) <= 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1516 { /* E = (0x7ff.. 0x1fff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1517 swPnShift = 1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1518
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1519 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1520 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1521 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1522
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1523 swPnShift = 2; /* E = (0x1fff..0x7fff] */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1524
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1525 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1526 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1527
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1528 /* shift pswWSVect down by the shift factor */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1529 /*------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1530
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1531 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1532 pswWSVec[i] = shr(pswWSVec[i], swPnShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1533
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1534
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1535 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1536 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1537
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1538 /* Do restricted adaptive codebook (long-term-predictor) search: */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1539 /* the search is restricted to the lags passed in from the */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1540 /* open-loop lag search */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1541 /*---------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1542
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1543 siCode = closedLoopLagSearch(pswLagList, siNumLags,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1544 pswLtpStateBase, pswHCoefs, pswWSVec,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1545 &swLag, &swLtpShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1546
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1547 /* Construct frame-lag code if this is the first subframe, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1548 /* or delta-lag code if it is not the first subframe */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1549 /*---------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1550
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1551 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1552 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1553
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1554 if (giSfrmCnt == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1555 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1556 siPrevLagCode = siCode;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1557 *psiLagCode = siCode;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1558 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1559 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1560 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1561
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1562 *psiLagCode = add(sub(siCode, siPrevLagCode), DELTA_LEVELS / 2);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1563 siPrevLagCode = siCode;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1564 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1565 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1566
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1567 /* From the value of the fundamental pitch obtained in the open-loop */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1568 /* lag search, get the correct phase of the interpolating filter, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1569 /* and scale the coefficients by the Harmonic-Noise-Weighting */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1570 /* coefficient. The result is the interpolating coefficients scaled */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1571 /* by the HNW coefficient. These will be used in all C(z) filtering */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1572 /*-------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1573
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1574 get_ipjj(swPitch, &siIntPitch, &siRemainder);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1575
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1576 for (i = 0; i < CG_INT_MACS; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1577 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1578
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1579 pswHNWCoefs[i] = mult_r(negate(ppsrCGIntFilt[i][siRemainder]),
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1580 swHNWCoef);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1581 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1582
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1583 /* Calculate a few values which will speed up C(z) filtering: */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1584 /* "HnwOffset" is the distance in samples from the input sample of */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1585 /* the C(z) filter to the first sample tapped by the interpolating */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1586 /* filter. "HnwNum" is the number of samples which need to be */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1587 /* filtered by C(z) in the zero-state case. */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1588 /*-----------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1589
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1590 siHnwOffset = sub(-CG_INT_MACS / 2, siIntPitch);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1591 siHnwNum = sub(S_LEN + CG_INT_MACS / 2 - 1, siIntPitch);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1592
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1593 /* Perform C(z) filter on W(z)-weighted speech, get zero-input */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1594 /* response of H(z)C(z) combo, subtract zero-input response */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1595 /* of H(z)C(z) from W(z)C(z)-weighted speech. The result is */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1596 /* the vector to match for the rest of the synthetic */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1597 /* excitation searches in the voiced modes */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1598 /*-------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1599
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1600 hnwFilt(pswWSpeech, pswWSVec, &pswWSpeech[-1], pswHNWCoefs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1601 siHnwOffset, 1, S_LEN);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1602
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1603 hnwFilt(pswTempVec, pswTempVec, &pswHNWState[HNW_BUFF_LEN - 1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1604 pswHNWCoefs, siHnwOffset, 1, S_LEN);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1605
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1606 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1607 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1608
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1609 pswWSVec[i] = shr(sub(pswWSVec[i], pswTempVec[i]), swPnShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1610
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1611 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1612
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1613 /* Recontruct adaptive codebook (long-term-predictor) vector, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1614 /* weight it through H(z) and C(z), each with zero state */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1615 /*------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1616
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1617 fp_ex(swLag, pswLtpStateOut);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1618
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1619 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1620 pswPVec[i] = pswLtpStateOut[i];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1621
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1622 lpcZsIir(pswPVec, pswHCoefs, pswWPVec);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1623
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1624 if (siHnwNum > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1625 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1626 hnwFilt(pswWPVec, pswWPVec, NULL, pswHNWCoefs, siHnwOffset,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1627 0, siHnwNum);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1628 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1629 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1630 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1631 pswPVec[i] = shr(pswPVec[i], swLtpShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1632 pswWPVec[i] = shr(pswWPVec[i], swLtpShift);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1633 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1634
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1635 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1636 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1637 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1638
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1639 /* Unvoiced mode: clear all voiced variables */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1640 /*-------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1641
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1642 swLag = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1643 *psiLagCode = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1644 siHnwNum = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1645 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1646
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1647 /* "NumBasisVecs" will be the number of basis vectors in */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1648 /* the vector-sum codebook(s) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1649 /*-------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1650
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1651 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1652 siNumBasisVecs = C_BITS_V;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1653
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1654 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1655 siNumBasisVecs = C_BITS_UV;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1656
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1657 /* Filter the basis vectors through H(z) with zero state, and if */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1658 /* voiced, through C(z) with zero state */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1659 /*----------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1660
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1661 for (i = 0; i < siNumBasisVecs; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1662 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1663
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1664 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1665 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1666
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1667 lpcZsIir((Shortword *) pppsrVcdCodeVec[0][i], pswHCoefs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1668 &pswWBasisVecs[i * S_LEN]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1669 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1670 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1671 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1672
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1673 lpcZsIir((Shortword *) pppsrUvCodeVec[0][i], pswHCoefs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1674 &pswWBasisVecs[i * S_LEN]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1675 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1676
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1677 if (siHnwNum > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1678 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1679
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1680 hnwFilt(&pswWBasisVecs[i * S_LEN], &pswWBasisVecs[i * S_LEN],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1681 NULL, pswHNWCoefs, siHnwOffset, 0, siHnwNum);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1682 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1683 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1684
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1685 /* If voiced, make the H(z)C(z)-weighted basis vectors orthogonal to */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1686 /* the H(z)C(z)-weighted adaptive codebook vector */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1687 /*-------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1688
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1689 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1690 decorr(siNumBasisVecs, pswWPVec, pswWBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1691
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1692 /* Do the vector-sum codebook search on the H(z)C(z)-weighted, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1693 /* orthogonalized basis vectors */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1694 /*-------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1695
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1696 *psiVSCode1 = v_srch(pswWSVec, pswWBasisVecs, siNumBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1697
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1698 /* Construct the chosen vector-sum codebook vector from basis vectors */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1699 /*--------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1700
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1701 b_con(*psiVSCode1, siNumBasisVecs, pswBitArray);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1702
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1703 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1704 v_con((Shortword *) pppsrVcdCodeVec[0][0], ppswVselpEx[0], pswBitArray,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1705 siNumBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1706
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1707 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1708 v_con((Shortword *) pppsrUvCodeVec[0][0], ppswVselpEx[0], pswBitArray,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1709 siNumBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1710
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1711 if (swVoicingMode == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1712 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1713
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1714 /* Construct the H(z)-weighted 1st-codebook vector */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1715 /*-------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1716
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1717 v_con(pswWBasisVecs, ppswWVselpEx[0], pswBitArray, siNumBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1718
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1719 /* Filter the 2nd basis vector set through H(z) with zero state */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1720 /*--------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1721
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1722 for (i = 0; i < siNumBasisVecs; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1723 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1724
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1725 lpcZsIir((Shortword *) pppsrUvCodeVec[1][i], pswHCoefs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1726 &pswWBasisVecs[i * S_LEN]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1727 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1728
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1729 /* Make the 2nd set of H(z)-weighted basis vectors orthogonal to the */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1730 /* H(z)-weighted 1st-codebook vector */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1731 /*-------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1732
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1733 decorr(siNumBasisVecs, ppswWVselpEx[0], pswWBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1734
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1735 /* Do the vector-sum codebook search on the H(z)-weighted, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1736 /* orthogonalized, 2nd basis vector set */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1737 /*---------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1738
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1739 *psiVSCode2 = v_srch(pswWSVec, pswWBasisVecs, siNumBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1740
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1741 /* Construct the chosen vector-sum codebook vector from the 2nd set */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1742 /* of basis vectors */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1743 /*------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1744
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1745 b_con(*psiVSCode2, siNumBasisVecs, pswBitArray);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1746
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1747 v_con((Shortword *) pppsrUvCodeVec[1][0], ppswVselpEx[1], pswBitArray,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1748 siNumBasisVecs);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1749 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1750
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1751 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1752 *psiVSCode2 = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1753
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1754 /* Filter the 1st-codebook vector through H(z) (also through C(z) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1755 /* if appropriate) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1756 /*----------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1757
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1758 lpcZsIir(ppswVselpEx[0], pswHCoefs, ppswWVselpEx[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1759
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1760 if (siHnwNum > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1761 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1762 hnwFilt(ppswWVselpEx[0], ppswWVselpEx[0], NULL, pswHNWCoefs,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1763 siHnwOffset, 0, siHnwNum);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1764 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1765
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1766 if (swVoicingMode == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1767 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1768
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1769 /* Filter the 2nd-codebook vector through H(z) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1770 /*---------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1771
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1772 lpcZsIir(ppswVselpEx[1], pswHCoefs, ppswWVselpEx[1]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1773 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1774
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1775 /* Get the square-root of the ratio of residual energy to */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1776 /* excitation vector energy for each of the excitation sources */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1777 /*-------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1778
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1779 if (swVoicingMode > 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1780 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1781
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1782 rs_rrNs(pswPVec, snsSqrtRs, &snsRs00);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1783 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1784
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1785 rs_rrNs(ppswVselpEx[0], snsSqrtRs, &snsRs11);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1786
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1787 if (swVoicingMode == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1788 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1789
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1790 rs_rrNs(ppswVselpEx[1], snsSqrtRs, &snsRs22);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1791 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1792
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1793 /* Determine the vector-quantized gains for each of the excitations */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1794 /*------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1795
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1796 *psiGsp0Code = g_quant_vl(swVoicingMode, pswWSVec, swPnShift,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1797 pswWPVec,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1798 ppswWVselpEx[0], ppswWVselpEx[1], snsRs00,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1799 snsRs11, snsRs22);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1800
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1801 } /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1802 else /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1803 { /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1804
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1805 /* swSP == 0, currently in comfort noise insertion mode */ /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1806 /*------------------------------------------------------*/ /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1807
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1808 /* generate the random codevector */ /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1809 siNumBasisVecs = C_BITS_UV; /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1810
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1811 /* build codevector 1 */ /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1812
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1813 b_con(*psiVSCode1, siNumBasisVecs, pswBitArray); /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1814 v_con((Shortword *) pppsrUvCodeVec[0][0], ppswVselpEx[0], /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1815 pswBitArray, siNumBasisVecs); /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1816
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1817 /* build codevector 2 */ /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1818
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1819 b_con(*psiVSCode2, siNumBasisVecs, pswBitArray); /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1820 v_con((Shortword *) pppsrUvCodeVec[1][0], ppswVselpEx[1], /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1821 pswBitArray, siNumBasisVecs); /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1822
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1823
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1824 /* get rs_rr for the two vectors */ /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1825 rs_rrNs(ppswVselpEx[0], snsSqrtRs, &snsRs11); /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1826 rs_rrNs(ppswVselpEx[1], snsSqrtRs, &snsRs22); /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1827
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1828 } /* DTX mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1829
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1830
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1831 /* Scale the excitations, each by its gain, and add them. Put the */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1832 /* result at the end of the adaptive codebook (long-term-predictor */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1833 /* state) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1834 /*-----------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1835
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1836 if (swVoicingMode == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1837 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1838
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1839 /* unvoiced */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1840 /* -------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1841
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1842 scaleExcite(ppswVselpEx[0],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1843 pppsrGsp0[swVoicingMode][*psiGsp0Code][0],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1844 snsRs11, ppswVselpEx[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1845 scaleExcite(ppswVselpEx[1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1846 pppsrGsp0[swVoicingMode][*psiGsp0Code][1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1847 snsRs22, ppswVselpEx[1]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1848
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1849 /* now combine the two scaled excitations */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1850 /* -------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1851 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1852 pswTempVec[i] = add(ppswVselpEx[0][i], ppswVselpEx[1][i]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1853 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1854
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1855 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1856 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1857
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1858 /* voiced */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1859 /* ------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1860
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1861 scaleExcite(pswPVec,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1862 pppsrGsp0[swVoicingMode][*psiGsp0Code][0],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1863 snsRs00, pswPVec);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1864 scaleExcite(ppswVselpEx[0],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1865 pppsrGsp0[swVoicingMode][*psiGsp0Code][1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1866 snsRs11, ppswVselpEx[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1867
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1868 /* now combine the two scaled excitations */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1869 /* -------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1870 for (i = 0; i < S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1871 pswTempVec[i] = add(pswPVec[i], ppswVselpEx[0][i]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1872 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1873
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1874 /* Update the long-term-predictor state using the synthetic excitation */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1875 /*---------------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1876
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1877 for (i = -LTP_LEN; i < -S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1878 pswLtpStateOut[i] = pswLtpStateOut[i + S_LEN];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1879
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1880 for (i = -S_LEN, j = 0; j < S_LEN; i++, j++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1881 pswLtpStateOut[i] = pswTempVec[j];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1882
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1883 /* Filter the synthetic excitation through the weighting filters, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1884 /* H(z) and C(z), only to update filter states (Note that C(z) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1885 /* state may be updated without filtering, since it is an FIR) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1886 /* */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1887 /* First, perform one subframe's worth of delay on C(z) state */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1888 /*----------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1889
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1890 for (i = 0; i < HNW_BUFF_LEN - S_LEN; i++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1891 pswHNWState[i] = pswHNWState[i + S_LEN];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1892
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1893 /* Second, perform H(z) filter on excitation, output goes into */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1894 /* C(z) state */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1895 /*-------------------------------------------------------------*/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1896
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1897 lpcIir(pswTempVec, pswHCoefs, pswHState,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1898 &pswHNWState[HNW_BUFF_LEN - S_LEN]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1899
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1900 } /* end of sfrmAnalysis() */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1901
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1902 /***************************************************************************
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1903 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1904 * FUNCTION NAME: v_srch
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1905 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1906 * PURPOSE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1907 * The purpose of this function is search a vector-sum codebook for the
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1908 * optimal vector
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1909 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1910 * INPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1911 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1912 * pswWInput[0:S_LEN]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1913 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1914 * the weighted input speech frame, with the zero-input
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1915 * response of H(z) subtracted
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1916 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1917 * pswWBasisVecs[0:S_LEN*siNumBasis]
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1918 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1919 * weighted, decorrelated vector-sum codebook basis
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1920 * vectors
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1921 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1922 * siNumBasis
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1923 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1924 * number of basis vectors
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1925 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1926 * OUTPUTS:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1927 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1928 * none
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1929 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1930 * RETURN VALUE:
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1931 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1932 * sw1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1933 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1934 * output code
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1935 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1936 * REFERENCE: Sub-clause 4.1.10.2 of GSM Recommendation 06.20
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1937 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1938 * KEYWORDS: v_srch, codebook, search
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1939 *
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1940 **************************************************************************/
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1941
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1942 Shortword v_srch(Shortword pswWInput[], Shortword pswWBasisVecs[],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1943 short int siNumBasis)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1944 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1945
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1946 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1947 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1948 | Local Constants |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1949 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1950 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1951
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1952 #define V_ARRAY_SIZE ( 1 << (C_BITS_V-1) ) - 1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1953 #define UN_ARRAY_SIZE ( 1 << (C_BITS_UV-1) ) - 1
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1954 #define MINUS_HALF -0x4000
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1955
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1956 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1957 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1958 | Local Static Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1959 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1960 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1961 static Shortword
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1962 pswUpdateIndexV[V_ARRAY_SIZE] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1963 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1964 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x1b, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1965 0x48, 0x5a, 0x00, 0x51, 0x48, 0x24, 0x00, 0x09, 0x48, 0x12,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1966 0x00, 0x51, 0x48, 0x63, 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1967 0x48, 0x2d, 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x1b,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1968 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51, 0x48, 0x6c, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1969 0x48, 0x12, 0x00, 0x51, 0x48, 0x63, 0x00, 0x09, 0x48, 0x5a,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1970 0x00, 0x51, 0x48, 0x36, 0x00, 0x09, 0x48, 0x12, 0x00, 0x51,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1971 0x48, 0x1b, 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51, 0x48, 0x24,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1972 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x63, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1973 0x48, 0x5a, 0x00, 0x51, 0x48, 0x75, 0x00, 0x09, 0x48, 0x12,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1974 0x00, 0x51, 0x48, 0x1b, 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1975 0x48, 0x6c, 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x63,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1976 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51, 0x48, 0x3f, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1977 0x48, 0x12, 0x00, 0x51, 0x48, 0x1b, 0x00, 0x09, 0x48, 0x5a,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1978 0x00, 0x51, 0x48, 0x24, 0x00, 0x09, 0x48, 0x12, 0x00, 0x51,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1979 0x48, 0x63, 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51, 0x48, 0x2d,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1980 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x1b, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1981 0x48, 0x5a, 0x00, 0x51, 0x48, 0x6c, 0x00, 0x09, 0x48, 0x12,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1982 0x00, 0x51, 0x48, 0x63, 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1983 0x48, 0x7e, 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x1b,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1984 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51, 0x48, 0x24, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1985 0x48, 0x12, 0x00, 0x51, 0x48, 0x63, 0x00, 0x09, 0x48, 0x5a,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1986 0x00, 0x51, 0x48, 0x75, 0x00, 0x09, 0x48, 0x12, 0x00, 0x51,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1987 0x48, 0x1b, 0x00, 0x09, 0x48, 0x5a, 0x00, 0x51, 0x48, 0x6c,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1988 0x00, 0x09, 0x48, 0x12, 0x00, 0x51, 0x48, 0x63, 0x00, 0x09,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1989 0x48, 0x5a, 0x00, 0x51, 0x48,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1990 },
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1991 pswBitIndexV[V_ARRAY_SIZE] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1992 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1993 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1994 0x01, 0x03, 0x01, 0x02, 0x01, 0x05, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1995 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1996 0x01, 0x06, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1997 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x05, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1998 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1999 0x01, 0x02, 0x01, 0x07, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2000 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x05,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2001 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2002 0x01, 0x03, 0x01, 0x02, 0x01, 0x06, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2003 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2004 0x01, 0x05, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2005 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2006 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2007 0x01, 0x02, 0x01, 0x05, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2008 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x06,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2009 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2010 0x01, 0x03, 0x01, 0x02, 0x01, 0x05, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2011 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2012 0x01, 0x07, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2013 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x05, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2014 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2015 0x01, 0x02, 0x01, 0x06, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2016 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x05,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2017 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2018 0x01, 0x03, 0x01, 0x02, 0x01,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2019 },
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2020 pswModNextBitV[C_BITS_V] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2021 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2022 1, 2, 3, 4, 5, 6, 7, 0, 1,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2023 },
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2024 pswUpdateIndexUn[UN_ARRAY_SIZE] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2025 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2026 0x00, 0x07, 0x2a, 0x0e, 0x00, 0x31, 0x2a, 0x15, 0x00, 0x07,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2027 0x2a, 0x38, 0x00, 0x31, 0x2a, 0x1c, 0x00, 0x07, 0x2a, 0x0e,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2028 0x00, 0x31, 0x2a, 0x3f, 0x00, 0x07, 0x2a, 0x38, 0x00, 0x31,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2029 0x2a, 0x23, 0x00, 0x07, 0x2a, 0x0e, 0x00, 0x31, 0x2a, 0x15,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2030 0x00, 0x07, 0x2a, 0x38, 0x00, 0x31, 0x2a, 0x46, 0x00, 0x07,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2031 0x2a, 0x0e, 0x00, 0x31, 0x2a, 0x3f, 0x00, 0x07, 0x2a, 0x38,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2032 0x00, 0x31, 0x2a,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2033 },
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2034 pswBitIndexUn[UN_ARRAY_SIZE] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2035 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2036 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2037 0x01, 0x03, 0x01, 0x02, 0x01, 0x05, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2038 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2039 0x01, 0x00, 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x04,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2040 0x01, 0x02, 0x01, 0x03, 0x01, 0x02, 0x01, 0x05, 0x01, 0x02,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2041 0x01, 0x03, 0x01, 0x02, 0x01, 0x04, 0x01, 0x02, 0x01, 0x03,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2042 0x01, 0x02, 0x01,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2043 },
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2044 pswModNextBitUV[C_BITS_UV] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2045 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2046 1, 2, 3, 4, 5, 0, 1,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2047 };
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2048
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2049 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2050 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2051 | Automatic Variables |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2052 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2053 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2054
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2055 Shortword **pppswDubD[C_BITS_V - 1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2056 *ppswD[C_BITS_V - 1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2057 pswCGUpdates[2 * C_BITS_V * (C_BITS_V - 1)],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2058 pswDSpace[2 * C_BITS_V * (C_BITS_V - 1)],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2059 *ppswDPSpace[C_BITS_V * (C_BITS_V - 1)],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2060 pswBits[C_BITS_V - 1],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2061 *pswUpdatePtr,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2062 *pswUIndex,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2063 *pswBIndex,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2064 *pswModNextBit,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2065 *psw0,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2066 *psw1,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2067 *psw2,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2068 swC0,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2069 swG0,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2070 swCC,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2071 swG,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2072 swCCMax,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2073 swGMax,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2074 sw1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2075 Longword pL_R[C_BITS_V],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2076 L_R,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2077 L_MaxC,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2078 L_C0,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2079 L_D,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2080 L_G0,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2081 L_C,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2082 L_G,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2083 L_1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2084 short int siI,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2085 siJ,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2086 siK,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2087 siEBits,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2088 siShiftCnt,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2089 siBitIndex,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2090 siBest,
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2091 siMask;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2092
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2093 /*_________________________________________________________________________
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2094 | |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2095 | Executable Code |
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2096 |_________________________________________________________________________|
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2097 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2098
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2099 /* initialize variables based on voicing mode */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2100 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2101
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2102 if (sub(siNumBasis, C_BITS_V) == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2103 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2104 siEBits = C_BITS_V_1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2105 pswUIndex = pswUpdateIndexV;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2106 pswBIndex = pswBitIndexV;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2107 pswModNextBit = pswModNextBitV;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2108 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2109 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2110 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2111 siEBits = C_BITS_UV_1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2112 pswUIndex = pswUpdateIndexUn;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2113 pswBIndex = pswBitIndexUn;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2114 pswModNextBit = pswModNextBitUV;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2115 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2116
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2117 /* initialize pointers */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2118 /* ------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2119
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2120 for (siI = 0; siI < siNumBasis - 1; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2121 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2122
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2123 pppswDubD[siI] = &ppswDPSpace[siI * siNumBasis];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2124
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2125 for (siJ = 0; siJ < siNumBasis; siJ++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2126 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2127 ppswDPSpace[(siI * siNumBasis) + siJ] =
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2128 &pswDSpace[(siI * siNumBasis * 2) + (siJ * 2)];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2129 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2130 ppswD[siI] = &pswDSpace[siI * siNumBasis];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2131 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2132
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2133 /* compute correlations (Rm) between given vector and basis vectors, */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2134 /* store in double precision; maintain max C for later scaling of Rm's */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2135 /* ------------------------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2136
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2137 L_MaxC = 0L;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2138
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2139 for (siI = 0; siI < siNumBasis; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2140 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2141
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2142 L_R = L_mult(pswWBasisVecs[siI * S_LEN], pswWInput[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2143
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2144 for (siJ = 1; siJ < S_LEN; siJ++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2145 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2146 L_R = L_mac(L_R, pswWBasisVecs[siJ + (siI * S_LEN)], pswWInput[siJ]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2147 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2148 pL_R[siI] = L_R;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2149 L_R = L_abs(L_R);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2150 L_MaxC = L_add(L_R, L_MaxC);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2151 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2152
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2153 /* normalize max C to get scaling shift count */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2154 /* scale Rm's and calculate C(0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2155 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2156
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2157 /* max abs(C) after scale is <= 0.5 */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2158 siShiftCnt = add(-1, norm_l(L_MaxC));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2159
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2160 L_C0 = 0L;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2161
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2162 for (siI = 0; siI < siNumBasis; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2163 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2164
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2165 L_R = L_shl(pL_R[siI], siShiftCnt);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2166
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2167 L_C0 = L_sub(L_C0, L_R);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2168
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2169 pL_R[siI] = L_shl(L_R, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2170
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2171 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2172 swC0 = extract_h(L_C0);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2173
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2174 /* compute correlations (Dmj, for m != j) between the basis vectors */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2175 /* store in double precision */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2176 /* ---------------------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2177
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2178 for (siI = 0; siI < siNumBasis - 1; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2179 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2180
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2181 for (siJ = siI + 1; siJ < siNumBasis; siJ++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2182 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2183
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2184 L_D = L_mult(pswWBasisVecs[siI * S_LEN], pswWBasisVecs[siJ * S_LEN]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2185
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2186 for (siK = 1; siK < S_LEN; siK++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2187 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2188 L_D = L_mac(L_D, pswWBasisVecs[siK + (siI * S_LEN)],
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2189 pswWBasisVecs[siK + (siJ * S_LEN)]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2190 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2191 pppswDubD[siI][siJ][0] = extract_h(L_D);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2192 pppswDubD[siI][siJ][1] = extract_l(L_D);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2193 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2194 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2195
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2196 /* compute the sum of the Djj's (to be used for scaling the Dmj's and */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2197 /* for computing G(0)); normalize it, get shift count for scaling Dmj's */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2198 /* -------------------------------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2199
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2200 psw1 = pswWBasisVecs;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2201
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2202 L_G0 = L_mult(psw1[0], psw1[0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2203
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2204 for (siI = 1; siI < siNumBasis * S_LEN; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2205 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2206 L_G0 = L_mac(L_G0, psw1[siI], psw1[siI]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2207 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2208
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2209 siShiftCnt = add(-4, norm_l(L_G0));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2210
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2211 L_G0 = L_shl(L_G0, siShiftCnt);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2212
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2213 /* scale Dmj's and compute G(0) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2214 /* ---------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2215
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2216 for (siI = 0; siI < siNumBasis - 1; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2217 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2218
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2219 for (siJ = siI + 1; siJ < siNumBasis; siJ++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2220 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2221
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2222 L_D = L_deposit_h(pppswDubD[siI][siJ][0]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2223 L_D = L_add(L_D, (LSP_MASK & L_deposit_l(pppswDubD[siI][siJ][1])));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2224
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2225 L_D = L_shl(L_D, siShiftCnt);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2226
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2227 L_D = L_shl(L_D, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2228
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2229 L_G0 = L_add(L_D, L_G0);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2230
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2231 L_D = L_shl(L_D, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2232
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2233 ppswD[siI][siJ] = round(L_D);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2234 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2235 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2236
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2237 swG0 = extract_h(L_G0);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2238
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2239 /* build array of update values for codebook search */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2240 /* ------------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2241
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2242 for (siI = 0; siI < siEBits; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2243 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2244 pswCGUpdates[siI * (siEBits + 1)] = round(pL_R[siI]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2245 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2246 psw0 = &pswCGUpdates[siEBits];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2247 psw1 = &pswCGUpdates[1];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2248 psw2 = &pswCGUpdates[2 * siEBits];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2249
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2250 for (siI = 0; siI < siEBits - 1; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2251 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2252
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2253 for (siJ = siI + 1; siJ < siEBits; siJ++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2254 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2255
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2256 L_1 = L_deposit_h(ppswD[siI][siJ]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2257 L_1 = L_shl(L_1, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2258 psw1[siJ - 1 + (siI * siEBits)] = extract_h(L_1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2259 psw2[siI + (siEBits * (siJ - 1))] = extract_h(L_1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2260 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2261 psw0[siI * (siEBits + 1)] = negate(ppswD[siI][siEBits]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2262 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2263
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2264 psw0[siI * (siEBits + 1)] = negate(ppswD[siEBits - 1][siEBits]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2265
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2266 /* copy to negative side of array */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2267 /* ------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2268
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2269 psw0 = &pswCGUpdates[(siEBits + 1) * siEBits];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2270
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2271 for (siI = 0; siI < (siEBits + 1) * siEBits; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2272 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2273 psw0[siI] = negate(pswCGUpdates[siI]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2274 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2275
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2276 /* initialize array of bits (magnitude = 0.5) */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2277 /* ------------------------------------------ */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2278
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2279 for (siI = 0; siI < siEBits; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2280 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2281 pswBits[siI] = MINUS_HALF;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2282 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2283
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2284 /* initialize and do codebook search */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2285 /* --------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2286
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2287 swGMax = swG0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2288 swCCMax = mult_r(swC0, swC0);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2289 L_C = L_deposit_h(swC0);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2290 L_G = L_deposit_h(swG0);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2291 siBest = 0;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2292
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2293 for (siI = 0; siI < (1 << siEBits) - 1; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2294 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2295
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2296 pswUpdatePtr = &pswCGUpdates[pswUIndex[siI]];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2297
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2298 siBitIndex = pswBIndex[siI];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2299
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2300 L_C = L_msu(L_C, pswUpdatePtr[0], 0x8000);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2301
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2302 for (siJ = 0; siJ < siEBits - 1; siJ++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2303 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2304 L_G = L_mac(L_G, pswUpdatePtr[siJ + 1], pswBits[siBitIndex]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2305 siBitIndex = pswModNextBit[siBitIndex];
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2306 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2307 L_G = L_msu(L_G, pswUpdatePtr[siJ + 1], 0x8000);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2308
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2309 pswBits[siBitIndex] = negate(pswBits[siBitIndex]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2310
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2311 sw1 = extract_h(L_C);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2312 swCC = mult_r(sw1, sw1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2313
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2314 swG = extract_h(L_G);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2315 L_1 = L_mult(swG, swCCMax);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2316
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2317 L_1 = L_msu(L_1, swGMax, swCC);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2318
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2319 if (L_1 < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2320 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2321 swCCMax = swCC;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2322 swGMax = swG;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2323 siBest = add(siI, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2324 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2325 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2326
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2327 /* generate code for positive correlation; */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2328 /* compute correlation, if negative, invert code */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2329 /* --------------------------------------------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2330
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2331 sw1 = siBest ^ (shr(siBest, 1));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2332
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2333 siMask = 0x1;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2334 L_1 = 0L;
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2335
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2336 for (siI = 0; siI < siNumBasis; siI++)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2337 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2338
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2339 if ((sw1 & siMask) == 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2340 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2341 L_1 = L_sub(L_1, pL_R[siI]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2342 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2343 else
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2344 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2345 L_1 = L_add(L_1, pL_R[siI]);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2346 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2347
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2348 siMask = shl(siMask, 1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2349 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2350
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2351 if (L_1 < 0)
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2352 {
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2353 sw1 = sw1 ^ (sub(shl(1, siNumBasis), 1));
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2354 }
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2355
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2356 /* return code */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2357 /* ----------- */
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2358
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2359 return (sw1);
9008dbc8ca74 import original C code from GSM 06.06
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2360 }