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annotate libtwamr/cbsearch.c @ 585:3c6bf0d26ee7 default tip

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TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents 4614f1a97e1a
children
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4614f1a97e1a libtwamr: integrate cbsearch.c
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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 : cbsearch.c
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11 * Purpose : Inovative codebook search (find index and gain)
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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 /*
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17 *****************************************************************************
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18 * MODULE INCLUDE FILE AND VERSION ID
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19 *****************************************************************************
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20 */
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21 #include "namespace.h"
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22 #include "cbsearch.h"
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23
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24 /*
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25 *****************************************************************************
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26 * INCLUDE FILES
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27 *****************************************************************************
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28 */
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29 #include "tw_amr.h"
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30 #include "typedef.h"
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31 #include "c2_9pf.h"
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32 #include "c2_11pf.h"
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33 #include "c3_14pf.h"
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34 #include "c4_17pf.h"
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35 #include "c8_31pf.h"
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36 #include "c1035pf.h"
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37 #include "basic_op.h"
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38 #include "no_count.h"
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39 #include "cnst.h"
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40
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41 /*
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42 *****************************************************************************
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43 * PUBLIC PROGRAM CODE
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44 *****************************************************************************
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45 */
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46 int cbsearch(Word16 x[], /* i : target vector, Q0 */
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47 Word16 h[], /* i : impulse response of weighted synthesis */
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48 /* filter h[-L_subfr..-1] must be set to */
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49 /* zero. Q12 */
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50 Word16 T0, /* i : Pitch lag */
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51 Word16 pitch_sharp, /* i : Last quantized pitch gain, Q14 */
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52 Word16 gain_pit, /* i : Pitch gain, Q14 */
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53 Word16 res2[], /* i : Long term prediction residual, Q0 */
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54 Word16 code[], /* o : Innovative codebook, Q13 */
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55 Word16 y[], /* o : filtered fixed codebook excitation, Q12 */
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56 Word16 **anap, /* o : Signs of the pulses */
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57 enum Mode mode,/* i : coder mode */
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58 Word16 subNr) /* i : subframe number */
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59 {
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60 Word16 index;
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61 Word16 i, temp, pit_sharpTmp;
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62
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63 /* For MR74, the pre and post CB pitch sharpening is included in the
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64 * codebook search routine, while for MR122 is it not.
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65 */
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66
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67 test (); test ();
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68 if ((sub (mode, MR475) == 0) || (sub (mode, MR515) == 0))
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69 { /* MR475, MR515 */ move16 ();
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70 *(*anap)++ = code_2i40_9bits(subNr, x, h, T0, pitch_sharp,
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71 code, y, &index);
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72 *(*anap)++ = index; /* sign index */ move16 ();
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73 }
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74 else if (sub (mode, MR59) == 0)
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75 { /* MR59 */
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76 test (); move16 ();
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77 *(*anap)++ = code_2i40_11bits(x, h, T0, pitch_sharp, code, y, &index);
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78 *(*anap)++ = index; /* sign index */ move16 ();
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79 }
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80 else if (sub (mode, MR67) == 0)
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81 { /* MR67 */
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82 test (); test (); move16 ();
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83 *(*anap)++ = code_3i40_14bits(x, h, T0, pitch_sharp, code, y, &index);
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84 *(*anap)++ = index; /* sign index */ move16 ();
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85 }
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86 else if (sub (mode, MR74) == 0 || sub (mode, MR795) == 0)
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87 { /* MR74, MR795 */
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88 test (); test (); test (); move16 ();
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89 *(*anap)++ = code_4i40_17bits(x, h, T0, pitch_sharp, code, y, &index);
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90 *(*anap)++ = index; /* sign index */ move16 ();
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91 }
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92 else if (sub (mode, MR102) == 0)
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93 { /* MR102 */
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94 test (); test (); test ();
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95 /*-------------------------------------------------------------*
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96 * - include pitch contribution into impulse resp. h1[] *
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97 *-------------------------------------------------------------*/
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98 /* pit_sharpTmp = pit_sharp; */
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99 /* if (pit_sharpTmp > 1.0) pit_sharpTmp = 1.0; */
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100 pit_sharpTmp = shl (pitch_sharp, 1);
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101 for (i = T0; i < L_SUBFR; i++)
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102 {
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103 temp = mult(h[i - T0], pit_sharpTmp);
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104 h[i] = add(h[i], temp); move16 ();
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105 }
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106
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107 /*--------------------------------------------------------------*
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108 * - Innovative codebook search (find index and gain) *
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109 *--------------------------------------------------------------*/
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110 code_8i40_31bits (x, res2, h, code, y, *anap);
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111 *anap += 7; add(0,0);
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112
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113 /*-------------------------------------------------------*
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114 * - Add the pitch contribution to code[]. *
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115 *-------------------------------------------------------*/
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116 for (i = T0; i < L_SUBFR; i++)
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117 {
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118 temp = mult (code[i - T0], pit_sharpTmp);
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119 code[i] = add (code[i], temp); move16 ();
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120 }
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121 }
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122 else
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123 { /* MR122 */
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124 /*-------------------------------------------------------------*
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125 * - include pitch contribution into impulse resp. h1[] *
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126 *-------------------------------------------------------------*/
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127 test (); test (); test ();
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128
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129 /* pit_sharpTmp = gain_pit; */
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130 /* if (pit_sharpTmp > 1.0) pit_sharpTmp = 1.0; */
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131 pit_sharpTmp = shl (gain_pit, 1);
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132
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133 for (i = T0; i < L_SUBFR; i++)
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134 {
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135 temp = mult(h[i - T0], pit_sharpTmp);
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136 h[i] = add(h[i], temp); move16 ();
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137 }
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138 /*--------------------------------------------------------------*
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139 * - Innovative codebook search (find index and gain) *
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140 *--------------------------------------------------------------*/
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141
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142 code_10i40_35bits (x, res2, h, code, y, *anap);
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143 *anap += 10; add(0,0);
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144
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145 /*-------------------------------------------------------*
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146 * - Add the pitch contribution to code[]. *
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147 *-------------------------------------------------------*/
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148 for (i = T0; i < L_SUBFR; i++)
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149 {
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150 temp = mult (code[i - T0], pit_sharpTmp);
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151 code[i] = add (code[i], temp); move16 ();
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152 }
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153 }
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154
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155 return 0;
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156 }