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annotate libgsmhr1/dtx_enc.c @ 613:7ce83c70ec5f

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libgsmhr1: integrate encoder DTX functions, first round
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 05 Mar 2026 07:53:49 +0000
parents
children e6e9d5104503
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1 /***************************************************************************
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2 *
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3 * File Name: dtx_enc.c
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4 *
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5 * Derivation: this module is the subset of GSM 06.06 dtx.c
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6 * reduced to those functions that are used only by the speech
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7 * encoder.
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8 *
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9 **************************************************************************/
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10
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11 /*________________________________________________________________________
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12 | |
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13 | Include Files |
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14 |________________________________________________________________________|
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15 */
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16
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17 #include "typedefs.h"
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18 #include "namespace.h"
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19 #include "mathhalf.h"
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20 #include "mathdp31.h"
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21 #include "enc_state.h"
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22 #include "dtx_const.h"
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23 #include "dtx_enc.h"
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24 #include "dtx_rxfe.h"
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25
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26 /*________________________________________________________________________
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27 | |
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28 | Defines |
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29 |________________________________________________________________________|
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30 */
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31
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32 #define OH_SHIFT 3 /* shift corresponding to OVERHANG */
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33
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34 #define NP_AFLAT 4
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35 #define LPC_VQ_SEG 3
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36
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37
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38 /*************************************************************************
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39 *
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40 * FUNCTION NAME: swComfortNoise
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41 *
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42 * PURPOSE:
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43 *
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44 * This routine perform the following tasks:
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45 * - generation of the speech flag (swSP)
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46 * - averaging and encoding of the comfort noise parameters
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47 * - randomization of the codebook indices
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48 *
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49 *
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50 * INPUTS:
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51 *
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52 * swVadFrmCnt (global) - swVadFlag=0 frame counter.
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53 * If swVadFlag=1 then this counter is 0, the first frame with
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54 * swVadFlag=0 will set this counter to 1, with each additional
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55 * swVadFlag=0 frame the counter is incremented.
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56 *
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57 * swVadFlag - voise activity flag. swVadFlag=0 frame with
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58 * no voice activity, swVadFlag=0 frame with voice activity
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59 *
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60 * L_UnqntzdR0 - unquantized R(0), 32 bit value, output of
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61 * FLAT.
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62 *
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63 * pL_UnqntzdCorr[NP+1] - unquantized correlation sequence,
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64 * also an output of FLAT.
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65 *
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66 *
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67 * OUTPUTS:
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68 *
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69 * swCNR0 - global variable, the output quantized R0 index
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70 *
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71 * pswCNLpc[3] - global variable, the output quantized LPC to the
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72 * transmitted in the SID frame
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73 *
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74 * pswCNGsp0Code[N_SUB] - global variable, the output quantized GSP0 indices
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75 *
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76 * pswCNVSCode1[N_SUB] - global variable, the output quantized codevector 1
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77 * indices.
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78 *
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79 * pswCNVSCode2[N_SUB] - global variable, the output quantized codevector 2
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80 * indices.
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81 *
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82 *
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83 * RETURN VALUE:
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84 *
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85 * swSP - speech flag, swSP=1 speech frames are generated, swSP=0
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86 * SID frames are generated.
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87 *
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88 *************************************************************************/
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89
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90 Shortword swComfortNoise(struct gsmhr_encoder_state *st, Shortword swVadFlag,
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91 Longword L_UnqntzdR0, Longword *pL_UnqntzdCorr)
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92 {
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93
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94 /*_________________________________________________________________________
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95 | |
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96 | Automatic Variables |
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97 |_________________________________________________________________________|
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98 */
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99
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100 struct cn_state *cn_st = &st->cn_state;
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101 Shortword swSP;
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102 Shortword pswFinalRc[NP];
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103
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104 /* unquantized reference parameters */
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105 Longword L_RefR0;
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106 Longword pL_RefCorr[NP + 1];
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107 Longword L_RefGs;
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108
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109 int i;
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110
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111
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112 /*_________________________________________________________________________
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113 | |
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114 | Executable Code |
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115 |_________________________________________________________________________|
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116 */
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117
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118 swSP = 1;
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119
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120 /* VadFrmCnt will indicate the number of sequential frames where */
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121 /* swVadFlag == 0 */
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122 /* ------------------------------------------------------------- */
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123
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124 if (swVadFlag)
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125 st->swVadFrmCnt = 0; /* Voice acitvity present */
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126 else
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127 st->swVadFrmCnt = add(st->swVadFrmCnt, 1); /* no voice activity */
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128
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129
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130 /* swNElapsed will indicate the number of frames that have elapsed */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 /* since the last SID frame with updated comfort noise parameters */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 /* was generated */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 /* --------------------------------------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 st->swNElapsed = add(st->swNElapsed, 1);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 /* If no voice activity was detected. */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 /* ----------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 if (st->swVadFrmCnt)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 /* Short speech burst ? */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 /* -------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 if (st->swVadFrmCnt == 1)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 if (sub(st->swNElapsed, 24) < 0)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 cn_st->swShortBurst = 1; /* short speech burst detected */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 else
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 cn_st->swShortBurst = 0; /* long speech burst detected */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 /* Update history, with this frames data */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 /* ------------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 updateCNHist(st, L_UnqntzdR0, pL_UnqntzdCorr,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 cn_st->pL_R0Hist, cn_st->ppL_CorrHist);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 /* first SID frame */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 /* --------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 if (((cn_st->swShortBurst == 0) && (st->swVadFrmCnt == OVERHANG)) ||
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 ((cn_st->swShortBurst == 1) && (st->swVadFrmCnt == 1)))
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 /* init. random generator */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 /* ---------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 cn_st->L_TxPNSeed = PN_INIT_SEED;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 /* average GS */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 /* ---------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 avgGsHistQntz(st->pL_GsHist, &L_RefGs);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 /* GS quantization */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 /* --------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 cn_st->swRefGsIndex = gsQuant(L_RefGs, 0);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 /* No Overhang in case of short speech bursts, */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 /* generate SID frames with repeated comfort noise parameters */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 /* ---------------------------------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 if ((cn_st->swShortBurst == 1) && (st->swVadFrmCnt < OVERHANG))
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 /* generate a SID frame with repeated parameters */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 /* --------------------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 swSP = 0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 /* repeat data: r0, LPC, GS */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 /* ------------------------ */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 st->swCNR0 = cn_st->swQntRefR0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 for (i = 0; i < 3; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 st->pswCNLpc[i] = cn_st->piRefVqCodewds[i];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 for (i = 0; i < N_SUB; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 st->pswCNGsp0Code[i] = cn_st->swRefGsIndex;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 /* generate SID frames with updated comfort noise parameters */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 /* --------------------------------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 if (st->swVadFrmCnt >= OVERHANG)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 /* A SID frame with updated parameters */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 /* ----------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 swSP = 0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 st->swNElapsed = 0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 /* average R0 and correlation values */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 /* --------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 avgCNHist(cn_st->pL_R0Hist, cn_st->ppL_CorrHist, &L_RefR0,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 pL_RefCorr);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 /* now quantize the averaged R(0) */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 /* ------------------------------ */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 cn_st->swQntRefR0 = r0Quant(L_RefR0);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 /* Quantize the averaged correlation */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 /* --------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 lpcCorrQntz(pL_RefCorr,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 pswFinalRc,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 cn_st->piRefVqCodewds);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 /* update frame data: r0, LPC */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 /* -------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 st->swCNR0 = cn_st->swQntRefR0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 for (i = 0; i < 3; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 st->pswCNLpc[i] = cn_st->piRefVqCodewds[i];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 /* update subframe data (unvoiced mode): GSP0 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257 /* ------------------------------------------ */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 for (i = 0; i < N_SUB; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260 st->pswCNGsp0Code[i] = cn_st->swRefGsIndex;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265 /* random codevectors */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 /* ------------------ */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268 if (swSP == 0)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270 for (i = 0; i < N_SUB; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272 st->pswCNVSCode1[i] = getPnBits(7, &cn_st->L_TxPNSeed);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273 st->pswCNVSCode2[i] = getPnBits(7, &cn_st->L_TxPNSeed);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 return (swSP);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 /*************************************************************************
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 * FUNCTION NAME: updateCNHist
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288 * PURPOSE:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 * Add current frame's unquantized R(0) and LPC information to the
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
291 * comfort noise history, so that it will be available for
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
292 * averaging.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
293 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
294 * INPUTS:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
295 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
296 * Unquantized values from the coder:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
297 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
298 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
299 * L_UnqntzdR0 - unquantized frame energy R(0), an output of FLAT
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
300 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
301 * pL_UnqntzdCorr[NP+1] - unquantized correlation coefficient
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
302 * array. Also an output of FLAT.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
303 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
304 * siUpdPointer (global) - A modulo counter which counts up from
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
305 * 0 to OVERHANG-1.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
306 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
307 * OUTPUTS:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
308 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
309 * pL_R0History[OVERHANG] - history of the OVERHANG frames worth of
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
310 * R(0).
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
311 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
312 * ppL_CorrHistory[OVERHANG][NP+1] - - history of the OVERHANG
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
313 * frames worth of pL_UnqntzdCorr[].
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
314 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
315 * RETURN VALUE:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
316 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
317 * none
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
318 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
319 *************************************************************************/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
320
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
321 void updateCNHist(struct gsmhr_encoder_state *st, Longword L_UnqntzdR0,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
322 Longword *pL_UnqntzdCorr, Longword pL_R0Hist[],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
323 Longword ppL_CorrHist[OVERHANG][NP + 1])
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
324 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
325
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
326 /*_________________________________________________________________________
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
327 | |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
328 | Automatic Variables |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
329 |_________________________________________________________________________|
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
330 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
331
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
332 int i;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
333
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
334
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
335 /*_________________________________________________________________________
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
336 | |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
337 | Executable Code |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
338 |_________________________________________________________________________|
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
339 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
340
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
341 /* update */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
342 pL_R0Hist[st->siUpdPointer] = L_UnqntzdR0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
343
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
344 for (i = 0; i < NP + 1; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
345 ppL_CorrHist[st->siUpdPointer][i] = pL_UnqntzdCorr[i];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
346
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
347 st->siUpdPointer = (st->siUpdPointer + 1) % OVERHANG;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
348 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
349
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
350
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
351 /*************************************************************************
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
352 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
353 * FUNCTION NAME: avgCNHist
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
354 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
355 * PURPOSE:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
356 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
357 * Average the unquantized R0 and LPC data stored at the encoder
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
358 * to arrive at an average R0 and LPC frame for use in a SID
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
359 * frame.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
360 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
361 * INPUTS:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
362 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
363 * pL_R0History[OVERHANG] - contains unquantized R(0) data from the
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
364 * most recent OVERHANG frame (including this one).
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
365 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
366 * ppL_CorrHistory[OVERHANG][NP+1] - Unquantized correlation
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
367 * coefficients from the most recent OVERHANG frame (including this
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
368 * one). The data stored here is an output of FLAT.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
369 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
370 * OUTPUTS:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
371 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
372 * *pL_AvgdR0 - the average of pL_R0History[]
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
373 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
374 * pL_AvgdCorrSeq[NP+1] - the average of ppL_CorrHistory[][].
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
375 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
376 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
377 * RETURN VALUE:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
378 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
379 * none
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
380 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
381 *************************************************************************/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
382
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
383 void avgCNHist(Longword pL_R0History[],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
384 Longword ppL_CorrHistory[OVERHANG][NP + 1],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
385 Longword *pL_AvgdR0, Longword pL_AvgdCorrSeq[])
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
386 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
387
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
388 /*_________________________________________________________________________
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
389 | |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
390 | Automatic Variables |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
391 |_________________________________________________________________________|
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
392 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
393
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
394 int i,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
395 j;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
396 Longword L_avg;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
397
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
398 /*_________________________________________________________________________
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
399 | |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
400 | Executable Code |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
401 |_________________________________________________________________________|
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
402 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
403
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
404 /* R0 Averaging */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
405 /* ------------ */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
406
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
407 for (L_avg = 0, i = 0; i < OVERHANG; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
408 L_avg = L_add(L_shr(pL_R0History[i], OH_SHIFT), L_avg);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
409
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
410 *pL_AvgdR0 = L_avg;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
411
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
412
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
413 /* LPC: average the last OVERHANG frames */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
414 /* ------------------------------------- */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
415
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
416 for (j = 0; j < NP + 1; j++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
417 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
418 for (L_avg = 0, i = 0; i < OVERHANG; i++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
419 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
420 L_avg = L_add(L_shift_r(ppL_CorrHistory[i][j], -OH_SHIFT), L_avg);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
421 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
422
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
423 pL_AvgdCorrSeq[j] = L_avg;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
424 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
425
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
426 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
427
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
428
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
429 /***************************************************************************
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
430 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
431 * FUNCTION NAME: lpcCorrQntz
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
432 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
433 * PURPOSE: Quantize a correlation sequence
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
434 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
435 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
436 * INPUT:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
437 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
438 * pL_CorrelSeq[NP+1]
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
439 * Correlation sequence to quantize.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
440 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
441 * OUTPUTS:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
442 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
443 * pswFinalRc[0:NP-1]
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
444 * A quantized set of NP reflection coefficients.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
445 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
446 * piVQCodewds[0:2]
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
447 * An array containing the indices of the 3 reflection
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
448 * coefficient vectors selected from the three segment
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
449 * Rc-VQ.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
450 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
451 * RETURN:
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
452 * None.
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
453 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
454 * KEYWORDS: AFLAT,aflat,flat,vectorquantization, reflectioncoefficients
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
455 *
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
456 *************************************************************************/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
457
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
458 #if 0
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
459 void lpcCorrQntz(Longword pL_CorrelSeq[],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
460 Shortword pswFinalRc[],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
461 int piVQCodewds[])
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
462 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
463
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
464 /*_________________________________________________________________________
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
465 | |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
466 | Automatic Variables |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
467 |_________________________________________________________________________|
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
468 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
469
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
470 Shortword pswPOldSpace[NP_AFLAT],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
471 pswPNewSpace[NP_AFLAT],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
472 pswVOldSpace[2 * NP_AFLAT - 1],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
473 pswVNewSpace[2 * NP_AFLAT - 1],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
474 *ppswPAddrs[2],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
475 *ppswVAddrs[2],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
476 *pswVBar,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
477 pswPBar[NP_AFLAT],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
478 pswVBarSpace[2 * NP_AFLAT - 1],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
479 pswFlatsRc[NP], /* Unquantized Rc's computed by FLAT */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
480 pswRc[NP + 1]; /* Temp list for the converted RC's */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
481 Longword *pL_VBarFull,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
482 pL_PBarFull[NP],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
483 pL_VBarFullSpace[2 * NP - 1];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
484
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
485 int i,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
486 iVec,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
487 iSeg,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
488 iCnt; /* Loop counter */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
489 struct QuantList quantList, /* A list of vectors */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
490 bestPql[4]; /* The four best vectors from
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
491 * the PreQ */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
492 struct QuantList bestQl[LPC_VQ_SEG + 1]; /* Best vectors for each of
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
493 * the three segments */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
494
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
495 /*_________________________________________________________________________
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
496 | |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
497 | Executable Code |
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
498 |_________________________________________________________________________|
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
499 */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
500
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
501 /* Setup pointers temporary space */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
502 /*--------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
503
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
504 pswVBar = pswVBarSpace + NP_AFLAT - 1;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
505 pL_VBarFull = pL_VBarFullSpace + NP - 1;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
506 ppswPAddrs[0] = pswPOldSpace;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
507 ppswPAddrs[1] = pswPNewSpace;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
508 ppswVAddrs[0] = pswVOldSpace + NP_AFLAT - 1;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
509 ppswVAddrs[1] = pswVNewSpace + NP_AFLAT - 1;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
510
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
511
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
512 /* Set up pL_PBarFull and pL_VBarFull initial conditions, using the */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
513 /* autocorrelation sequence derived from the optimal reflection */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
514 /* coefficients computed by FLAT. The initial conditions are shifted */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
515 /* right by RSHIFT bits. These initial conditions, stored as */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
516 /* Longwords, are used to initialize PBar and VBar arrays for the */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
517 /* next VQ segment. */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
518 /*--------------------------------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
519
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
520 initPBarFullVBarFullL(pL_CorrelSeq, pL_PBarFull, pL_VBarFull);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
521
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
522 /* Set up initial PBar and VBar initial conditions, using pL_PBarFull */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
523 /* and pL_VBarFull arrays initialized above. These are the initial */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
524 /* PBar and VBar conditions to be used by the AFLAT recursion at the */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
525 /* 1-st Rc-VQ segment. */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
526 /*--------------------------------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
527
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
528 initPBarVBarL(pL_PBarFull, pswPBar, pswVBar);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
529
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
530 for (iSeg = 1; iSeg <= LPC_VQ_SEG; iSeg++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
531 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
532 /* initialize candidate list */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
533 /*---------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
534
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
535 quantList.iNum = psrPreQSz[iSeg - 1];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
536 quantList.iRCIndex = 0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
537
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
538 /* do aflat for all vectors in the list */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
539 /*--------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
540
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
541 setupPreQ(iSeg, quantList.iRCIndex); /* set up vector ptrs */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
542
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
543 for (iCnt = 0; iCnt < quantList.iNum; iCnt++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
544 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
545 /* get a vector */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
546 /*--------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
547
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
548 getNextVec(pswRc);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
549
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
550 /* clear the limiter flag */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
551 /*------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
552
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
553 iLimit = 0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
554
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
555 /* find the error values for each vector */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
556 /*---------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
557
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
558 quantList.pswPredErr[iCnt] =
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
559 aflatRecursion(&pswRc[psvqIndex[iSeg - 1].l],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
560 pswPBar, pswVBar,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
561 ppswPAddrs, ppswVAddrs,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
562 psvqIndex[iSeg - 1].len);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
563
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
564 /* check the limiter flag */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
565 /*------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
566
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
567 if (iLimit)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
568 quantList.pswPredErr[iCnt] = 0x7fff; /* set error to bad value */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
569
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
570 } /* done list loop */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
571
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
572 /* find 4 best prequantizer levels */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
573 /*---------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
574
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
575 findBestInQuantList(quantList, 4, bestPql);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
576
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
577 for (iVec = 0; iVec < 4; iVec++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
578 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
579
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
580 /* initialize quantizer list */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
581 /*---------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
582
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
583 quantList.iNum = psrQuantSz[iSeg - 1];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
584 quantList.iRCIndex = bestPql[iVec].iRCIndex * psrQuantSz[iSeg - 1];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
585
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
586 setupQuant(iSeg, quantList.iRCIndex); /* set up vector ptrs */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
587
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
588 /* do aflat recursion on each element of list */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
589 /*--------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
590
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
591 for (iCnt = 0; iCnt < quantList.iNum; iCnt++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
592 {
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
593 /* get a vector */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
594 /*--------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
595
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
596 getNextVec(pswRc);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
597
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
598 /* clear the limiter flag */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
599 /*------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
600
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
601 iLimit = 0;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
602
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
603 /* find the error values for each vector */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
604 /*---------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
605
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
606 quantList.pswPredErr[iCnt] =
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
607 aflatRecursion(&pswRc[psvqIndex[iSeg - 1].l],
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
608 pswPBar, pswVBar,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
609 ppswPAddrs, ppswVAddrs,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
610 psvqIndex[iSeg - 1].len);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
611
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
612 /* check the limiter flag */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
613 /*------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
614
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
615 if (iLimit)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
616 quantList.pswPredErr[iCnt] = 0x7fff; /* set error to the worst
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
617 * value */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
618
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
619 } /* done list loop */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
620
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
621 /* find best quantizer vector for this segment, and save it */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
622 /*----------------------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
623
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
624 findBestInQuantList(quantList, 1, bestQl);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
625 if (iVec == 0)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
626 bestQl[iSeg] = bestQl[0];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
627 else if (sub(bestQl[iSeg].pswPredErr[0], bestQl[0].pswPredErr[0]) > 0)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
628 bestQl[iSeg] = bestQl[0];
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
629
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
630 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
631
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
632 /* find the quantized reflection coefficients */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
633 /*--------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
634
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
635 setupQuant(iSeg, bestQl[iSeg].iRCIndex); /* set up vector ptrs */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
636 getNextVec((Shortword *) (pswFinalRc - 1));
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
637
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
638
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
639 /* Update pBarFull and vBarFull for the next Rc-VQ segment, and */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
640 /* update the pswPBar and pswVBar for the next Rc-VQ segment */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
641 /*--------------------------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
642
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
643 if (iSeg < LPC_VQ_SEG)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
644 aflatNewBarRecursionL(&pswFinalRc[psvqIndex[iSeg - 1].l - 1], iSeg,
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
645 pL_PBarFull, pL_VBarFull, pswPBar, pswVBar);
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
646
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
647 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
648
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
649 /* find the quantizer index (the values to be output in the symbol file) */
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
650 /*-----------------------------------------------------------------*/
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
651
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
652 for (iSeg = 1; iSeg <= LPC_VQ_SEG; iSeg++)
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
653 piVQCodewds[iSeg - 1] = bestQl[iSeg].iRCIndex;
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
654
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
655 }
7ce83c70ec5f libgsmhr1: integrate encoder DTX functions, first round
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
656 #endif