annotate libtwamr/cod_amr.c @ 458:e26b974f7ba3

doc/AMR-study-utils: update for the current situation
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 10 May 2024 18:45:36 +0000
parents 93d6c6960a46
children
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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 : cod_amr.c
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11 * Purpose : Main encoder routine operating on a frame basis.
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12 *
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13 *****************************************************************************
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14 */
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15 #include "namespace.h"
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16 #include "cod_amr.h"
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17
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18 /*
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19 *****************************************************************************
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20 * INCLUDE FILES
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21 *****************************************************************************
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22 */
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23
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24 #include "typedef.h"
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25 #include "basic_op.h"
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26 #include "no_count.h"
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27 #include "cnst.h"
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28 #include "memops.h"
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29 #include "qua_gain.h"
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30
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31 #include "lpc.h"
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32 #include "lsp.h"
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33 #include "pre_big.h"
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34 #include "ol_ltp.h"
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35 #include "p_ol_wgh.h"
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36 #include "spreproc.h"
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37 #include "cl_ltp.h"
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38 #include "pred_lt.h"
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39 #include "spstproc.h"
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40 #include "cbsearch.h"
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41 #include "gain_q.h"
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42 #include "convolve.h"
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43 #include "ton_stab.h"
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44 #include "vad.h"
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45 #include "dtx_enc.h"
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46
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47 /*
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48 *****************************************************************************
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49 * LOCAL VARIABLES AND TABLES
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50 *****************************************************************************
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51 */
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52
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53 /*
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54 *****************************************************************************
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55 * PUBLIC VARIABLES AND TABLES
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56 *****************************************************************************
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57 */
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58 /* Spectral expansion factors */
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59
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60 static const Word16 gamma1[M] =
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61 {
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62 30802, 28954, 27217, 25584, 24049,
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63 22606, 21250, 19975, 18777, 17650
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64 };
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65
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66 /* gamma1 differs for the 12k2 coder */
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67 static const Word16 gamma1_12k2[M] =
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68 {
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69 29491, 26542, 23888, 21499, 19349,
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70 17414, 15672, 14105, 12694, 11425
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71 };
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72
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73 static const Word16 gamma2[M] =
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74 {
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75 19661, 11797, 7078, 4247, 2548,
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76 1529, 917, 550, 330, 198
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77 };
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78
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79 /*
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80 *****************************************************************************
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81 * PUBLIC PROGRAM CODE
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82 *****************************************************************************
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83 */
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84
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85 /*
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86 **************************************************************************
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87 *
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88 * Function : cod_amr_reset
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89 * Purpose : Resets state memory
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90 *
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91 **************************************************************************
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92 */
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93 void cod_amr_reset (cod_amrState *st, Flag dtx, Flag use_vad2)
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94 {
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95 Word16 i;
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96
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97 /* save DTX flag */
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98 st->dtx = dtx;
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99
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100 /*-----------------------------------------------------------------------*
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101 * Initialize pointers to speech vector. *
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102 *-----------------------------------------------------------------------*/
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103
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104 st->new_speech = st->old_speech + L_TOTAL - L_FRAME; /* New speech */
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105
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106 st->speech = st->new_speech - L_NEXT; /* Present frame */
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107
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108 st->p_window = st->old_speech + L_TOTAL - L_WINDOW; /* For LPC window */
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109 st->p_window_12k2 = st->p_window - L_NEXT; /* EFR LPC window: no lookahead */
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110
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111 /* Initialize static pointers */
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112
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113 st->wsp = st->old_wsp + PIT_MAX;
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114 st->exc = st->old_exc + PIT_MAX + L_INTERPOL;
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115 st->zero = st->ai_zero + MP1;
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116 st->error = st->mem_err + M;
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117 st->h1 = &st->hvec[L_SUBFR];
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118
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119 /* Static vectors to zero */
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120
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121 Set_zero(st->old_speech, L_TOTAL);
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122 Set_zero(st->old_exc, PIT_MAX + L_INTERPOL);
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123 Set_zero(st->old_wsp, PIT_MAX);
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124 Set_zero(st->mem_syn, M);
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125 Set_zero(st->mem_w, M);
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126 Set_zero(st->mem_w0, M);
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127 Set_zero(st->mem_err, M);
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128 Set_zero(st->zero, L_SUBFR);
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129 Set_zero(st->hvec, L_SUBFR); /* set to zero "h1[-L_SUBFR..-1]" */
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130
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131 /* OL LTP states */
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132 for (i = 0; i < 5; i++)
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133 {
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134 st->old_lags[i] = 40;
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135 }
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136
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137 /* Reset lpc states */
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138 lpc_reset(&st->lpcSt);
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139
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140 /* Reset lsp states */
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141 lsp_reset(&st->lspSt);
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142
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143 /* Reset clLtp states */
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144 cl_ltp_reset(&st->clLtpSt);
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145
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146 gainQuant_reset(&st->gainQuantSt);
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147
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148 p_ol_wgh_reset(&st->pitchOLWghtSt);
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149
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150 ton_stab_reset(&st->tonStabSt);
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151
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152 vad_reset(&st->vadSt, use_vad2);
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153
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154 dtx_enc_reset(&st->dtx_encSt);
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155
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156 st->sharp = SHARPMIN;
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157 }
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158
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159 /***************************************************************************
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160 * FUNCTION: cod_amr_first
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161 *
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162 * PURPOSE: Copes with look-ahead.
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163 *
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164 * INPUTS:
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165 * No input argument are passed to this function. However, before
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166 * calling this function, 40 new speech data should be copied to the
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167 * vector new_speech[]. This is a global pointer which is declared in
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168 * this file (it points to the end of speech buffer minus 200).
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169 *
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170 ***************************************************************************/
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171
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172 int cod_amr_first(cod_amrState *st, /* i/o : State struct */
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173 Word16 new_speech[]) /* i : speech input (L_FRAME) */
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174 {
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175 Copy(new_speech,&st->new_speech[-L_NEXT], L_NEXT);
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176 /* Copy(new_speech,st->new_speech,L_FRAME); */
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177
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178 return 0;
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179 }
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180
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181
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182 /***************************************************************************
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183 * FUNCTION: cod_amr
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184 *
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185 * PURPOSE: Main encoder routine.
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186 *
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187 * DESCRIPTION: This function is called every 20 ms speech frame,
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188 * operating on the newly read 160 speech samples. It performs the
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189 * principle encoding functions to produce the set of encoded parameters
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190 * which include the LSP, adaptive codebook, and fixed codebook
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191 * quantization indices (addresses and gains).
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192 *
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193 * INPUTS:
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194 * No input argument are passed to this function. However, before
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195 * calling this function, 160 new speech data should be copied to the
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196 * vector new_speech[]. This is a global pointer which is declared in
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197 * this file (it points to the end of speech buffer minus 160).
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198 *
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199 * OUTPUTS:
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200 *
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201 * ana[]: vector of analysis parameters.
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202 * synth[]: Local synthesis speech (for debugging purposes)
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203 *
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204 ***************************************************************************/
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205 int cod_amr(
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206 cod_amrState *st, /* i/o : State struct */
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207 enum Mode mode, /* i : AMR mode */
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208 Word16 new_speech[], /* i : speech input (L_FRAME) */
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209 Word16 ana[], /* o : Analysis parameters */
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210 enum Mode *usedMode, /* o : used mode */
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211 Word16 synth[] /* o : Local synthesis */
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212 )
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213 {
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214 /* LPC coefficients */
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215 Word16 A_t[(MP1) * 4]; /* A(z) unquantized for the 4 subframes */
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216 Word16 Aq_t[(MP1) * 4]; /* A(z) quantized for the 4 subframes */
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217 Word16 *A, *Aq; /* Pointer on A_t and Aq_t */
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218 Word16 lsp_new[M];
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219
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220 /* Other vectors */
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221 Word16 xn[L_SUBFR]; /* Target vector for pitch search */
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222 Word16 xn2[L_SUBFR]; /* Target vector for codebook search */
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223 Word16 code[L_SUBFR]; /* Fixed codebook excitation */
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diff changeset
224 Word16 y1[L_SUBFR]; /* Filtered adaptive excitation */
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225 Word16 y2[L_SUBFR]; /* Filtered fixed codebook excitation */
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226 Word16 gCoeff[6]; /* Correlations between xn, y1, & y2: */
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227 Word16 res[L_SUBFR]; /* Short term (LPC) prediction residual */
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228 Word16 res2[L_SUBFR]; /* Long term (LTP) prediction residual */
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229
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230 /* Vector and scalars needed for the MR475 */
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231 Word16 xn_sf0[L_SUBFR]; /* Target vector for pitch search */
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parents:
diff changeset
232 Word16 y2_sf0[L_SUBFR]; /* Filtered codebook innovation */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
233 Word16 code_sf0[L_SUBFR]; /* Fixed codebook excitation */
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diff changeset
234 Word16 h1_sf0[L_SUBFR]; /* The impulse response of sf0 */
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diff changeset
235 Word16 mem_syn_save[M]; /* Filter memory */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 Word16 mem_w0_save[M]; /* Filter memory */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 Word16 mem_err_save[M]; /* Filter memory */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
238 Word16 sharp_save; /* Sharpening */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
239 Word16 evenSubfr; /* Even subframe indicator */
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Mychaela Falconia <falcon@freecalypso.org>
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240 Word16 T0_sf0 = 0; /* Integer pitch lag of sf0 */
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diff changeset
241 Word16 T0_frac_sf0 = 0; /* Fractional pitch lag of sf0 */
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diff changeset
242 Word16 i_subfr_sf0 = 0; /* Position in exc[] for sf0 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 Word16 gain_pit_sf0; /* Quantized pitch gain for sf0 */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
244 Word16 gain_code_sf0; /* Quantized codebook gain for sf0 */
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245
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246 /* Scalars */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
247 Word16 i_subfr, subfrNr;
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
248 Word16 T_op[L_FRAME/L_FRAME_BY2];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 Word16 T0, T0_frac;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250 Word16 gain_pit, gain_code;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
251
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 /* Flags */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 Word16 lsp_flag = 0; /* indicates resonance in LPC filter */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 Word16 gp_limit; /* pitch gain limit value */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 Word16 vad_flag; /* VAD decision flag */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 Word16 compute_sid_flag; /* SID analysis flag */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
258 Copy(new_speech, st->new_speech, L_FRAME);
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parents:
diff changeset
259
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
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260 *usedMode = mode; move16 ();
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parents:
diff changeset
261
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 /* DTX processing */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263 if (st->dtx)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 { /* no test() call since this if is only in simulation env */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265 /* Find VAD decision */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267 if (st->vadSt.use_vad2) {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268 vad_flag = vad2(st->new_speech, &st->vadSt.u.v2);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 vad_flag = vad2(st->new_speech+80, &st->vadSt.u.v2) || vad_flag;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270 } else {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271 vad_flag = vad1(&st->vadSt.u.v1, st->new_speech);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 /* NB! usedMode may change here */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275 compute_sid_flag = tx_dtx_handler(&st->dtx_encSt,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276 vad_flag,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277 usedMode);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279 else
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281 compute_sid_flag = 0; move16 ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 /*------------------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285 * - Perform LPC analysis: *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 * * autocorrelation + lag windowing *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287 * * Levinson-durbin algorithm to find a[] *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288 * * convert a[] to lsp[] *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 * * quantize and code the LSPs *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 * * find the interpolated LSPs and convert to a[] for all *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
291 * subframes (both quantized and unquantized) *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
292 *------------------------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
293
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
294 /* LP analysis */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
295 lpc(&st->lpcSt, mode, st->p_window, st->p_window_12k2, A_t);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
296
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
297 /* From A(z) to lsp. LSP quantization and interpolation */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
298 lsp(&st->lspSt, mode, *usedMode, A_t, Aq_t, lsp_new, &ana);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
299
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
300 /* Buffer lsp's and energy */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
301 dtx_buffer(&st->dtx_encSt,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
302 lsp_new,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
303 st->new_speech);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
304
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
305 /* Check if in DTX mode */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
306 test();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
307 if (sub(*usedMode, MRDTX) == 0)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
308 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
309 dtx_enc(&st->dtx_encSt,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
310 compute_sid_flag,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
311 &st->lspSt.qSt,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
312 &st->gainQuantSt.gc_predSt,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
313 &ana);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
314
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
315 Set_zero(st->old_exc, PIT_MAX + L_INTERPOL);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
316 Set_zero(st->mem_w0, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
317 Set_zero(st->mem_err, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
318 Set_zero(st->zero, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
319 Set_zero(st->hvec, L_SUBFR); /* set to zero "h1[-L_SUBFR..-1]" */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
320 /* Reset lsp states */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
321 lsp_reset(&st->lspSt);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
322 Copy(lsp_new, st->lspSt.lsp_old, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
323 Copy(lsp_new, st->lspSt.lsp_old_q, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
324
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
325 /* Reset clLtp states */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
326 cl_ltp_reset(&st->clLtpSt);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
327 st->sharp = SHARPMIN;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
328 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
329 else
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
330 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
331 /* check resonance in the filter */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
332 lsp_flag = check_lsp(&st->tonStabSt, st->lspSt.lsp_old);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
333 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
334
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
335 /*----------------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
336 * - Find the weighted input speech w_sp[] for the whole speech frame *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
337 * - Find the open-loop pitch delay for first 2 subframes *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
338 * - Set the range for searching closed-loop pitch in 1st subframe *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
339 * - Find the open-loop pitch delay for last 2 subframes *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
340 *----------------------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
341
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
342 if (st->dtx && st->vadSt.use_vad2)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
343 { /* no test() call since this if is only in simulation env */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
344 st->vadSt.u.v2.L_Rmax = 0;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
345 st->vadSt.u.v2.L_R0 = 0;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
346 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
347 for(subfrNr = 0, i_subfr = 0;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
348 subfrNr < L_FRAME/L_FRAME_BY2;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
349 subfrNr++, i_subfr += L_FRAME_BY2)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
350 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
351 /* Pre-processing on 80 samples */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
352 pre_big(mode, gamma1, gamma1_12k2, gamma2, A_t, i_subfr, st->speech,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
353 st->mem_w, st->wsp);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
354
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
355 test (); test ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
356 if ((sub(mode, MR475) != 0) && (sub(mode, MR515) != 0))
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
357 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
358 /* Find open loop pitch lag for two subframes */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
359 ol_ltp(&st->pitchOLWghtSt, &st->vadSt, mode, &st->wsp[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
360 &T_op[subfrNr], st->old_lags, st->ol_gain_flg, subfrNr,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
361 st->dtx);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
362 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
363 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
364
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
365 if ((sub(mode, MR475) == 0) || (sub(mode, MR515) == 0))
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
366 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
367 /* Find open loop pitch lag for ONE FRAME ONLY */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
368 /* search on 160 samples */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
369
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
370 ol_ltp(&st->pitchOLWghtSt, &st->vadSt, mode, &st->wsp[0], &T_op[0],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
371 st->old_lags, st->ol_gain_flg, 1, st->dtx);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
372 T_op[1] = T_op[0];
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
373 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
374
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
375 if (st->dtx && st->vadSt.use_vad2)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
376 { /* no test() call since this if is only in simulation env */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
377 LTP_flag_update(&st->vadSt.u.v2, mode);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
378 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
379
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
380 /* run VAD pitch detection */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
381 if (st->dtx && !st->vadSt.use_vad2)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
382 { /* no test() call since this if is only in simulation env */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
383 vad_pitch_detection(&st->vadSt.u.v1, T_op);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
384 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
385
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
386 if (sub(*usedMode, MRDTX) == 0)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
387 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
388 goto the_end;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
389 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
390
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
391 /*------------------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
392 * Loop for every subframe in the analysis frame *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
393 *------------------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
394 * To find the pitch and innovation parameters. The subframe size is *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
395 * L_SUBFR and the loop is repeated L_FRAME/L_SUBFR times. *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
396 * - find the weighted LPC coefficients *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
397 * - find the LPC residual signal res[] *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
398 * - compute the target signal for pitch search *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
399 * - compute impulse response of weighted synthesis filter (h1[]) *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
400 * - find the closed-loop pitch parameters *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
401 * - encode the pitch dealy *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
402 * - update the impulse response h1[] by including fixed-gain pitch *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
403 * - find target vector for codebook search *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
404 * - codebook search *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
405 * - encode codebook address *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
406 * - VQ of pitch and codebook gains *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
407 * - find synthesis speech *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
408 * - update states of weighting filter *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
409 *------------------------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
410
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
411 A = A_t; /* pointer to interpolated LPC parameters */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
412 Aq = Aq_t; /* pointer to interpolated quantized LPC parameters */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
413
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
414 evenSubfr = 0; move16 ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
415 subfrNr = -1; move16 ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
416 for (i_subfr = 0; i_subfr < L_FRAME; i_subfr += L_SUBFR)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
417 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
418 subfrNr = add(subfrNr, 1);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
419 evenSubfr = sub(1, evenSubfr);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
420
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
421 /* Save states for the MR475 mode */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
422 test(); test();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
423 if ((evenSubfr != 0) && (sub(*usedMode, MR475) == 0))
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
424 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
425 Copy(st->mem_syn, mem_syn_save, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
426 Copy(st->mem_w0, mem_w0_save, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
427 Copy(st->mem_err, mem_err_save, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
428 sharp_save = st->sharp;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
429 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
430
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
431 /*-----------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
432 * - Preprocessing of subframe *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
433 *-----------------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
434 if (sub(*usedMode, MR475) != 0)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
435 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
436 subframePreProc(*usedMode, gamma1, gamma1_12k2,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
437 gamma2, A, Aq, &st->speech[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
438 st->mem_err, st->mem_w0, st->zero,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
439 st->ai_zero, &st->exc[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
440 st->h1, xn, res, st->error);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
441 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
442 else
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
443 { /* MR475 */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
444 subframePreProc(*usedMode, gamma1, gamma1_12k2,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
445 gamma2, A, Aq, &st->speech[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
446 st->mem_err, mem_w0_save, st->zero,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
447 st->ai_zero, &st->exc[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
448 st->h1, xn, res, st->error);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
449
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
450 /* save impulse response (modified in cbsearch) */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
451 if (evenSubfr != 0)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
452 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
453 Copy (st->h1, h1_sf0, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
454 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
455 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
456
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
457 /* copy the LP residual (res2 is modified in the CL LTP search) */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
458 Copy (res, res2, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
459
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
460 /*-----------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
461 * - Closed-loop LTP search *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
462 *-----------------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
463 cl_ltp(&st->clLtpSt, &st->tonStabSt, *usedMode, i_subfr, T_op, st->h1,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
464 &st->exc[i_subfr], res2, xn, lsp_flag, xn2, y1,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
465 &T0, &T0_frac, &gain_pit, gCoeff, &ana,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
466 &gp_limit);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
467
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
468 /* update LTP lag history */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
469 if ((subfrNr == 0) && (st->ol_gain_flg[0] > 0))
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
470 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
471 st->old_lags[1] = T0;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
472 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
473
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
474 if ((sub(subfrNr, 3) == 0) && (st->ol_gain_flg[1] > 0))
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
475 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
476 st->old_lags[0] = T0;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
477 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
478
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
479 /*-----------------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
480 * - Inovative codebook search (find index and gain) *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
481 *-----------------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
482 cbsearch(xn2, st->h1, T0, st->sharp, gain_pit, res2,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
483 code, y2, &ana, *usedMode, subfrNr);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
484
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
485 /*------------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
486 * - Quantization of gains. *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
487 *------------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
488 gainQuant(&st->gainQuantSt, *usedMode, res, &st->exc[i_subfr], code,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
489 xn, xn2, y1, y2, gCoeff, evenSubfr, gp_limit,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
490 &gain_pit_sf0, &gain_code_sf0,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
491 &gain_pit, &gain_code, &ana);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
492
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
493 /* update gain history */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
494 update_gp_clipping(&st->tonStabSt, gain_pit);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
495
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
496 if (sub(*usedMode, MR475) != 0)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
497 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
498 /* Subframe Post Porcessing */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
499 subframePostProc(st->speech, *usedMode, i_subfr, gain_pit,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
500 gain_code, Aq, synth, xn, code, y1, y2, st->mem_syn,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
501 st->mem_err, st->mem_w0, st->exc, &st->sharp);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
502 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
503 else
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
504 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
505 if (evenSubfr != 0)
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
506 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
507 i_subfr_sf0 = i_subfr; move16 ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
508 Copy(xn, xn_sf0, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
509 Copy(y2, y2_sf0, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
510 Copy(code, code_sf0, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
511 T0_sf0 = T0; move16 ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
512 T0_frac_sf0 = T0_frac; move16 ();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
513
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
514 /* Subframe Post Porcessing */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
515 subframePostProc(st->speech, *usedMode, i_subfr, gain_pit,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
516 gain_code, Aq, synth, xn, code, y1, y2,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
517 mem_syn_save, st->mem_err, mem_w0_save,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
518 st->exc, &st->sharp);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
519 st->sharp = sharp_save; move16();
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
520 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
521 else
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
522 {
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
523 /* update both subframes for the MR475 */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
524
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
525 /* Restore states for the MR475 mode */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
526 Copy(mem_err_save, st->mem_err, M);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
527
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
528 /* re-build excitation for sf 0 */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
529 Pred_lt_3or6(&st->exc[i_subfr_sf0], T0_sf0, T0_frac_sf0,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
530 L_SUBFR, 1);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
531 Convolve(&st->exc[i_subfr_sf0], h1_sf0, y1, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
532
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
533 Aq -= MP1;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
534 subframePostProc(st->speech, *usedMode, i_subfr_sf0,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
535 gain_pit_sf0, gain_code_sf0, Aq,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
536 synth, xn_sf0, code_sf0, y1, y2_sf0,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
537 st->mem_syn, st->mem_err, st->mem_w0, st->exc,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
538 &sharp_save); /* overwrites sharp_save */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
539 Aq += MP1;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
540
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
541 /* re-run pre-processing to get xn right (needed by postproc) */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
542 /* (this also reconstructs the unsharpened h1 for sf 1) */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
543 subframePreProc(*usedMode, gamma1, gamma1_12k2,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
544 gamma2, A, Aq, &st->speech[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
545 st->mem_err, st->mem_w0, st->zero,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
546 st->ai_zero, &st->exc[i_subfr],
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
547 st->h1, xn, res, st->error);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
548
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
549 /* re-build excitation sf 1 (changed if lag < L_SUBFR) */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
550 Pred_lt_3or6(&st->exc[i_subfr], T0, T0_frac, L_SUBFR, 1);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
551 Convolve(&st->exc[i_subfr], st->h1, y1, L_SUBFR);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
552
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
553 subframePostProc(st->speech, *usedMode, i_subfr, gain_pit,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
554 gain_code, Aq, synth, xn, code, y1, y2,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
555 st->mem_syn, st->mem_err, st->mem_w0,
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
556 st->exc, &st->sharp);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
557 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
558 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
559
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
560 A += MP1; /* interpolated LPC parameters for next subframe */
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
561 Aq += MP1;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
562 }
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
563
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
564 Copy(&st->old_exc[L_FRAME], &st->old_exc[0], PIT_MAX + L_INTERPOL);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
565
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
566 the_end:
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
567
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
568 /*--------------------------------------------------*
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
569 * Update signal for next frame. *
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
570 *--------------------------------------------------*/
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
571 Copy(&st->old_wsp[L_FRAME], &st->old_wsp[0], PIT_MAX);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
572
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
573 Copy(&st->old_speech[L_FRAME], &st->old_speech[0], L_TOTAL - L_FRAME);
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
574
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
575 return 0;
93d6c6960a46 libtwamr: integrate cod_amr.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
576 }