FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/p_ol_wgh.c @ 449:2af2b5c12268

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Library-versions: libtwamr is officially version 1.0.0
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 10 May 2024 01:43:05 +0000
parents 48c7f8e8c9af
children
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48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 *****************************************************************************
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3 *
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
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5 * R99 Version 3.3.0
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6 * REL-4 Version 4.1.0
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7 *
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8 *****************************************************************************
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9 *
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10 * File : p_ol_wgh.c
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
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11 * Purpose : Compute the open loop pitch lag with weighting
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12 *
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13 *************************************************************************/
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14 /*
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15 ********************************************************************************
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16 * MODULE INCLUDE FILE AND VERSION ID
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17 ********************************************************************************
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18 */
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19 #include "namespace.h"
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20 #include "p_ol_wgh.h"
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21
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22 /*
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23 *****************************************************************************
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24 * INCLUDE FILES
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25 *****************************************************************************
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26 */
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27 #include "typedef.h"
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28 #include "basic_op.h"
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29 #include "oper_32b.h"
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30 #include "no_count.h"
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31 #include "cnst.h"
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32 #include "corrwght.tab"
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33 #include "gmed_n.h"
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34 #include "inv_sqrt.h"
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35 #include "vad.h"
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36 #include "calc_cor.h"
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Mychaela Falconia <falcon@freecalypso.org>
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37 #include "hp_max.h"
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38
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39 /*
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40 *****************************************************************************
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41 * LOCAL VARIABLES AND TABLES
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42 *****************************************************************************
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43 */
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44 /*************************************************************************
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45 *
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Mychaela Falconia <falcon@freecalypso.org>
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46 * FUNCTION: Lag_max
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47 *
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48 * PURPOSE: Find the lag that has maximum correlation of scal_sig[] in a
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
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49 * given delay range.
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50 *
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51 * DESCRIPTION:
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52 * The correlation is given by
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Mychaela Falconia <falcon@freecalypso.org>
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53 * cor[t] = <scal_sig[n],scal_sig[n-t]>, t=lag_min,...,lag_max
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54 * The functions outputs the maximum correlation after normalization
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Mychaela Falconia <falcon@freecalypso.org>
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55 * and the corresponding lag.
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Mychaela Falconia <falcon@freecalypso.org>
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56 *
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57 *************************************************************************/
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Mychaela Falconia <falcon@freecalypso.org>
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58 static Word16 Lag_max ( /* o : lag found */
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Mychaela Falconia <falcon@freecalypso.org>
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59 vadState *vadSt, /* i/o : VAD state struct */
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60 Word32 corr[], /* i : correlation vector. */
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61 Word16 scal_sig[], /* i : scaled signal. */
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62 Word16 L_frame, /* i : length of frame to compute pitch */
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63 Word16 lag_max, /* i : maximum lag */
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64 Word16 lag_min, /* i : minimum lag */
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65 Word16 old_lag, /* i : old open-loop lag */
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66 Word16 *cor_max, /* o : normalized correlation of selected lag */
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Mychaela Falconia <falcon@freecalypso.org>
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67 Word16 wght_flg, /* i : is weighting function used */
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Mychaela Falconia <falcon@freecalypso.org>
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68 Word16 *gain_flg, /* o : open-loop flag */
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Mychaela Falconia <falcon@freecalypso.org>
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69 Flag dtx /* i : dtx flag; use dtx=1, do not use dtx=0 */
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70 )
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71 {
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72 Word16 i, j;
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73 Word16 *p, *p1;
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74 Word32 max, t0;
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75 Word16 t0_h, t0_l;
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76 Word16 p_max;
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77 const Word16 *ww, *we;
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78 Word32 t1;
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79
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80 ww = &corrweight[250]; move16 ();
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81 we = &corrweight[123 + lag_max - old_lag]; move16 ();
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82
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83 max = MIN_32; move32 ();
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84 p_max = lag_max; move16 ();
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85
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86 for (i = lag_max; i >= lag_min; i--)
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87 {
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88 t0 = corr[-i]; move32 ();
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89
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90 /* Weighting of the correlation function. */
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Mychaela Falconia <falcon@freecalypso.org>
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91 L_Extract (corr[-i], &t0_h, &t0_l);
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92 t0 = Mpy_32_16 (t0_h, t0_l, *ww);
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93 ww--; move16();
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94 test ();
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95 if (wght_flg > 0) {
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Mychaela Falconia <falcon@freecalypso.org>
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96 /* Weight the neighbourhood of the old lag. */
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Mychaela Falconia <falcon@freecalypso.org>
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97 L_Extract (t0, &t0_h, &t0_l);
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98 t0 = Mpy_32_16 (t0_h, t0_l, *we);
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99 we--; move16();
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100 }
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101
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102 test ();
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103 if (L_sub (t0, max) >= 0)
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104 {
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105 max = t0; move32 ();
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106 p_max = i; move16 ();
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107 }
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108 }
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109
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Mychaela Falconia <falcon@freecalypso.org>
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110 p = &scal_sig[0]; move16 ();
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Mychaela Falconia <falcon@freecalypso.org>
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111 p1 = &scal_sig[-p_max]; move16 ();
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Mychaela Falconia <falcon@freecalypso.org>
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112 t0 = 0; move32 ();
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113 t1 = 0; move32 ();
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Mychaela Falconia <falcon@freecalypso.org>
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114
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Mychaela Falconia <falcon@freecalypso.org>
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115 for (j = 0; j < L_frame; j++, p++, p1++)
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116 {
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117 t0 = L_mac (t0, *p, *p1);
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118 t1 = L_mac (t1, *p1, *p1);
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119 }
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120
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121 if (dtx)
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Mychaela Falconia <falcon@freecalypso.org>
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122 { /* no test() call since this if is only in simulation env */
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Mychaela Falconia <falcon@freecalypso.org>
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123 if (vadSt->use_vad2) {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 /* Save max correlation */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 vadSt->u.v2.L_Rmax = L_add(vadSt->u.v2.L_Rmax, t0);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 /* Save max energy */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 vadSt->u.v2.L_R0 = L_add(vadSt->u.v2.L_R0, t1);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 } else {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 /* update and detect tone */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 vad_tone_detection_update (&vadSt->u.v1, 0);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 vad_tone_detection (&vadSt->u.v1, t0, t1);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 /* gain flag is set according to the open_loop gain */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 /* is t2/t1 > 0.4 ? */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 *gain_flg = round(L_msu(t0, round(t1), 13107)); move16();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 *cor_max = 0; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 return (p_max);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 /*
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 *****************************************************************************
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 * PUBLIC PROGRAM CODE
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 *****************************************************************************
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 /*************************************************************************
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 * Function: p_ol_wgh_reset
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 * Purpose: Initializes state memory to zero
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 **************************************************************************
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 void p_ol_wgh_reset (pitchOLWghtState *st)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 /* Reset pitch search states */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 st->old_T0_med = 40;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 st->ada_w = 0;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 st->wght_flg = 0;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 /*************************************************************************
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 * Function: p_ol_wgh
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 * Purpose: open-loop pitch search with weighting
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 **************************************************************************
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 Word16 Pitch_ol_wgh ( /* o : open loop pitch lag */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 pitchOLWghtState *st, /* i/o : State struct */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 vadState *vadSt, /* i/o : VAD state struct */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 Word16 signal[], /* i : signal used to compute the open loop pitch */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 /* signal[-pit_max] to signal[-1] should be known */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 Word16 pit_min, /* i : minimum pitch lag */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 Word16 pit_max, /* i : maximum pitch lag */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 Word16 L_frame, /* i : length of frame to compute pitch */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 Word16 old_lags[], /* i : history with old stored Cl lags */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 Word16 ol_gain_flg[], /* i : OL gain flag */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 Word16 idx, /* i : index */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 Flag dtx /* i : dtx flag; use dtx=1, do not use dtx=0 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 )
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 Word16 i;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 Word16 max1;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 Word16 p_max1;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 Word32 t0;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 Word16 corr_hp_max;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 Word32 corr[PIT_MAX+1], *corr_ptr;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 /* Scaled signal */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 Word16 scaled_signal[PIT_MAX + L_FRAME];
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 Word16 *scal_sig;
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 scal_sig = &scaled_signal[pit_max]; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 t0 = 0L; move32 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 for (i = -pit_max; i < L_frame; i++)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 t0 = L_mac (t0, signal[i], signal[i]);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 /*--------------------------------------------------------*
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 * Scaling of input signal. *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 * *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 * if Overflow -> scal_sig[i] = signal[i]>>2 *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 * else if t0 < 1^22 -> scal_sig[i] = signal[i]<<2 *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 * else -> scal_sig[i] = signal[i] *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 *--------------------------------------------------------*/
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 /*--------------------------------------------------------*
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 * Verification for risk of overflow. *
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 *--------------------------------------------------------*/
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 test (); test ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 if (L_sub (t0, MAX_32) == 0L) /* Test for overflow */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 for (i = -pit_max; i < L_frame; i++)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 scal_sig[i] = shr (signal[i], 3); move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 else if (L_sub (t0, (Word32) 1048576L) < (Word32) 0)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226 for (i = -pit_max; i < L_frame; i++)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 scal_sig[i] = shl (signal[i], 3); move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 else
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 for (i = -pit_max; i < L_frame; i++)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 scal_sig[i] = signal[i]; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 /* calculate all coreelations of scal_sig, from pit_min to pit_max */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 corr_ptr = &corr[pit_max]; move32 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 comp_corr (scal_sig, L_frame, pit_max, pit_min, corr_ptr);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 p_max1 = Lag_max (vadSt, corr_ptr, scal_sig, L_frame, pit_max, pit_min,
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 st->old_T0_med, &max1, st->wght_flg, &ol_gain_flg[idx],
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 dtx);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 test (); move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 if (ol_gain_flg[idx] > 0)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 /* Calculate 5-point median of previous lags */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 for (i = 4; i > 0; i--) /* Shift buffer */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 old_lags[i] = old_lags[i-1]; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 old_lags[0] = p_max1; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257 st->old_T0_med = gmed_n (old_lags, 5); move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 st->ada_w = 32767; move16 (); /* Q15 = 1.0 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260 else
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 st->old_T0_med = p_max1; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263 st->ada_w = mult(st->ada_w, 29491); /* = ada_w = ada_w * 0.9 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 test ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267 if (sub(st->ada_w, 9830) < 0) /* ada_w - 0.3 */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 st->wght_flg = 0; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271 else
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273 st->wght_flg = 1; move16 ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276 if (dtx && !vadSt->use_vad2)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277 { /* no test() call since this if is only in simulation env */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278 test ();
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279 if (sub(idx, 1) == 0)
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 {
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281 /* calculate max high-passed filtered correlation of all lags */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282 hp_max (corr_ptr, scal_sig, L_frame, pit_max, pit_min, &corr_hp_max);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 /* update complex background detector */
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285 vad_complex_detection_update(&vadSt->u.v1, corr_hp_max);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287 }
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 return (p_max1);
48c7f8e8c9af libtwamr: integrate p_ol_wgh.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 }