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annotate libgsmefr/d_homing.c @ 53:49dd1ac8e75b

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libgsmefr: import most *.c files from ETSI source
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 25 Nov 2022 16:18:21 +0000
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children c87ccddf3fd1
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53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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1 /**************************************************************************
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2 *
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3 * File Name: d_homing.c
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4 *
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5 * Purpose:
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6 * This file contains the following functions:
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7 *
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8 * decoder_homing_frame_test() checks if a frame of input speech
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9 * parameters matches the Decoder Homing
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10 * Frame pattern.
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11 *
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12 * decoder_reset() called by reset_dec() to reset all of
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13 * the state variables for the decoder
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14 *
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15 * reset_dec() calls functions to reset the state
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16 * variables for the decoder, and for
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17 * the receive DTX and Comfort Noise.
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18 *
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19 **************************************************************************/
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20
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21 #include "typedef.h"
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22 #include "cnst.h"
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23 #include "dtx.h"
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24 #include "codec.h"
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25 #include "d_homing.h"
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26 #include "q_plsf_5.tab"
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27
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28 #define PRM_NO 57
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29
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30 /***************************************************************************
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31 *
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32 * FUNCTION NAME: decoder_homing_frame_test
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33 *
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34 * PURPOSE:
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35 * Checks if a frame of input speech parameters matches the Decoder
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36 * Homing Frame pattern, which is:
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37 *
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38 * parameter decimal value hexidecimal value
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39 * --------- ------------- -----------------
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40 * LPC 1 4 0x0004
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41 * LPC 2 47 0x002F
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42 * LPC 3 180 0x00B4
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43 * LPC 4 144 0x0090
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44 * LPC 5 62 0x003E
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45 * LTP-LAG 1 342 0x0156
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46 * LTP-GAIN 1 11 0x000B
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47 * PULSE1_1 0 0x0000
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48 * PULSE1_2 1 0x0001
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49 * PULSE1_3 15 0x000F
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50 * PULSE1_4 1 0x0001
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51 * PULSE1_5 13 0x000D
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52 * PULSE1_6 0 0x0000
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53 * PULSE1_7 3 0x0003
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54 * PULSE1_8 0 0x0000
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55 * PULSE1_9 3 0x0003
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56 * PULSE1_10 0 0x0000
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57 * FCB-GAIN 1 3 0x0003
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58 * LTP-LAG 2 54 0x0036
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59 * LTP-GAIN 2 1 0x0001
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60 * PULSE2_1 8 0x0008
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61 * PULSE2_2 8 0x0008
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62 * PULSE2_3 5 0x0005
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63 * PULSE2_4 8 0x0008
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64 * PULSE2_5 1 0x0001
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65 * PULSE2_6 0 0x0000
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66 * PULSE2_7 0 0x0000
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67 * PULSE2_8 1 0x0001
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68 * PULSE2_9 1 0x0001
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69 * PULSE2_10 0 0x0000
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70 * FCB-GAIN 2 0 0x0000
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71 * LTP-LAG 3 342 0x0156
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72 * LTP-GAIN 3 0 0x0000
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73 * PULSE3_1 0 0x0000
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74 * PULSE3_2 0 0x0000
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75 * PULSE3_3 0 0x0000
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76 * PULSE3_4 0 0x0000
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77 * PULSE3_5 0 0x0000
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78 * PULSE3_6 0 0x0000
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79 * PULSE3_7 0 0x0000
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80 * PULSE3_8 0 0x0000
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81 * PULSE3_9 0 0x0000
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82 * PULSE3_10 0 0x0000
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83 * FCB-GAIN 3 0 0x0000
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84 * LTP-LAG 4 54 0x0036
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85 * LTP-GAIN 4 11 0x000B
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86 * PULSE4_1 0 0x0000
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87 * PULSE4_2 0 0x0000
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88 * PULSE4_3 0 0x0000
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89 * PULSE4_4 0 0x0000
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90 * PULSE4_5 0 0x0000
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91 * PULSE4_6 0 0x0000
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92 * PULSE4_7 0 0x0000
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93 * PULSE4_8 0 0x0000
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94 * PULSE4_9 0 0x0000
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95 * PULSE4_10 0 0x0000
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96 * FCB-GAIN 4 0 0x0000
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97 *
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98 * INPUT:
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99 * parm[] one frame of speech parameters in parallel format
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100 *
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101 * nbr_of_params
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102 * the number of consecutive parameters in parm[] to match
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103 *
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104 * OUTPUT:
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105 * None
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106 *
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107 * RETURN:
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108 * 0 input frame does not match the Decoder Homing Frame pattern.
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109 * 1 input frame matches the Decoder Homing Frame pattern.
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110 *
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111 **************************************************************************/
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112
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113 Word16 decoder_homing_frame_test (Word16 parm[], Word16 nbr_of_params)
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114 {
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115 static const Word16 dhf_mask[PRM_NO] =
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116 {
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117 0x0004, /* LPC 1 */
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118 0x002f, /* LPC 2 */
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119 0x00b4, /* LPC 3 */
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120 0x0090, /* LPC 4 */
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121 0x003e, /* LPC 5 */
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122
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123 0x0156, /* LTP-LAG 1 */
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124 0x000b, /* LTP-GAIN 1 */
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125 0x0000, /* PULSE 1_1 */
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126 0x0001, /* PULSE 1_2 */
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127 0x000f, /* PULSE 1_3 */
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128 0x0001, /* PULSE 1_4 */
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129 0x000d, /* PULSE 1_5 */
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130 0x0000, /* PULSE 1_6 */
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131 0x0003, /* PULSE 1_7 */
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132 0x0000, /* PULSE 1_8 */
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133 0x0003, /* PULSE 1_9 */
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134 0x0000, /* PULSE 1_10 */
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parents:
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135 0x0003, /* FCB-GAIN 1 */
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diff changeset
136
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diff changeset
137 0x0036, /* LTP-LAG 2 */
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Mychaela Falconia <falcon@freecalypso.org>
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138 0x0001, /* LTP-GAIN 2 */
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139 0x0008, /* PULSE 2_1 */
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140 0x0008, /* PULSE 2_2 */
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141 0x0005, /* PULSE 2_3 */
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142 0x0008, /* PULSE 2_4 */
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parents:
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143 0x0001, /* PULSE 2_5 */
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144 0x0000, /* PULSE 2_6 */
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145 0x0000, /* PULSE 2_7 */
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146 0x0001, /* PULSE 2_8 */
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147 0x0001, /* PULSE 2_9 */
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148 0x0000, /* PULSE 2_10 */
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149 0x0000, /* FCB-GAIN 2 */
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diff changeset
150
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151 0x0156, /* LTP-LAG 3 */
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152 0x0000, /* LTP-GAIN 3 */
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153 0x0000, /* PULSE 3_1 */
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154 0x0000, /* PULSE 3_2 */
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155 0x0000, /* PULSE 3_3 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 0x0000, /* PULSE 3_4 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 0x0000, /* PULSE 3_5 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 0x0000, /* PULSE 3_6 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 0x0000, /* PULSE 3_7 */
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Mychaela Falconia <falcon@freecalypso.org>
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160 0x0000, /* PULSE 3_8 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 0x0000, /* PULSE 3_9 */
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diff changeset
162 0x0000, /* PULSE 3_10 */
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diff changeset
163 0x0000, /* FCB-GAIN 3 */
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diff changeset
164
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165 0x0036, /* LTP-LAG 4 */
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166 0x000b, /* LTP-GAIN 4 */
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167 0x0000, /* PULSE 4_1 */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
168 0x0000, /* PULSE 4_2 */
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169 0x0000, /* PULSE 4_3 */
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diff changeset
170 0x0000, /* PULSE 4_4 */
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parents:
diff changeset
171 0x0000, /* PULSE 4_5 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 0x0000, /* PULSE 4_6 */
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diff changeset
173 0x0000, /* PULSE 4_7 */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
174 0x0000, /* PULSE 4_8 */
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175 0x0000, /* PULSE 4_9 */
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Mychaela Falconia <falcon@freecalypso.org>
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176 0x0000, /* PULSE 4_10 */
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177 0x0000 /* FCB-GAIN 4 */ };
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178
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179 Word16 i, j;
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180
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181 for (i = 0; i < nbr_of_params; i++)
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182 {
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183 j = parm[i] ^ dhf_mask[i];
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184
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185 if (j)
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Mychaela Falconia <falcon@freecalypso.org>
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186 break;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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187 }
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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188
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189 return !j;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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190 }
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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191
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Mychaela Falconia <falcon@freecalypso.org>
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192 /***************************************************************************
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193 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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194 * FUNCTION NAME: decoder_reset
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195 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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196 * PURPOSE:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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197 * resets all of the state variables for the decoder
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198 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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199 * INPUT:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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200 * None
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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201 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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202 * OUTPUT:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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203 * None
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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204 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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205 * RETURN:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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206 * None
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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207 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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208 **************************************************************************/
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Mychaela Falconia <falcon@freecalypso.org>
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209
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Mychaela Falconia <falcon@freecalypso.org>
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210 void decoder_reset (void)
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
211 {
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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212 /* External declarations for decoder variables which need to be reset */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
213
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
214 /* variable defined in decoder.c */
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Mychaela Falconia <falcon@freecalypso.org>
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215 /* ----------------------------- */
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Mychaela Falconia <falcon@freecalypso.org>
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216 extern Word16 synth_buf[L_FRAME + M];
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
217
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
218 /* variable defined in agc.c */
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Mychaela Falconia <falcon@freecalypso.org>
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219 /* -------------------------- */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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220 extern Word16 past_gain;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
221
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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222 /* variables defined in d_gains.c */
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Mychaela Falconia <falcon@freecalypso.org>
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223 /* ------------------------------ */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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224 /* Error concealment */
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Mychaela Falconia <falcon@freecalypso.org>
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225 extern Word16 pbuf[5], past_gain_pit, prev_gp, gbuf[5], past_gain_code,
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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226 prev_gc;
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227
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Mychaela Falconia <falcon@freecalypso.org>
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228 /* CNI */
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Mychaela Falconia <falcon@freecalypso.org>
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229 extern Word16 gcode0_CN, gain_code_old_CN, gain_code_new_CN;
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230 extern Word16 gain_code_muting_CN;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
231
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
232 /* Memories of gain dequantization: */
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Mychaela Falconia <falcon@freecalypso.org>
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233 extern Word16 past_qua_en[4], pred[4];
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diff changeset
234
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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235 /* variables defined in d_plsf_5.c */
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Mychaela Falconia <falcon@freecalypso.org>
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236 /* ------------------------------ */
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Mychaela Falconia <falcon@freecalypso.org>
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237 /* Past quantized prediction error */
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Mychaela Falconia <falcon@freecalypso.org>
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238 extern Word16 past_r2_q[M];
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
239
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Mychaela Falconia <falcon@freecalypso.org>
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240 /* Past dequantized lsfs */
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Mychaela Falconia <falcon@freecalypso.org>
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241 extern Word16 past_lsf_q[M];
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
242
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Mychaela Falconia <falcon@freecalypso.org>
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243 /* CNI */
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Mychaela Falconia <falcon@freecalypso.org>
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244 extern Word16 lsf_p_CN[M], lsf_new_CN[M], lsf_old_CN[M];
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
245
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Mychaela Falconia <falcon@freecalypso.org>
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246 /* variables defined in dec_lag6.c */
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247 /* ------------------------------ */
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Mychaela Falconia <falcon@freecalypso.org>
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248 extern Word16 old_T0;
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Mychaela Falconia <falcon@freecalypso.org>
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249
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Mychaela Falconia <falcon@freecalypso.org>
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250 /* variable defined in preemph.c */
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Mychaela Falconia <falcon@freecalypso.org>
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251 /* ------------------------------ */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
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252 extern Word16 mem_pre;
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253
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254 Word16 i;
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255
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256 /* reset all the decoder state variables */
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257 /* ------------------------------------- */
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258
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259 /* Variable in decoder.c: */
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260 for (i = 0; i < M; i++)
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261 {
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262 synth_buf[i] = 0;
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263 }
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264
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265 /* Variables in dec_12k2.c: */
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266 Init_Decoder_12k2 ();
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267
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268 /* Variable in agc.c: */
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269 past_gain = 4096;
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270
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271 /* Variables in d_gains.c: */
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272 for (i = 0; i < 5; i++)
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273 {
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274 pbuf[i] = 410; /* Error concealment */
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275 gbuf[i] = 1; /* Error concealment */
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276 }
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277
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278 past_gain_pit = 0; /* Error concealment */
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279 prev_gp = 4096; /* Error concealment */
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280 past_gain_code = 0; /* Error concealment */
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281 prev_gc = 1; /* Error concealment */
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282 gcode0_CN = 0; /* CNI */
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283 gain_code_old_CN = 0; /* CNI */
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284 gain_code_new_CN = 0; /* CNI */
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285 gain_code_muting_CN = 0; /* CNI */
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286
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287 for (i = 0; i < 4; i++)
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288 {
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289 past_qua_en[i] = -2381; /* past quantized energies */
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290 }
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291
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292 pred[0] = 44; /* MA prediction coeff */
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293 pred[1] = 37; /* MA prediction coeff */
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294 pred[2] = 22; /* MA prediction coeff */
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295 pred[3] = 12; /* MA prediction coeff */
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296
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297 /* Variables in d_plsf_5.c: */
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298 for (i = 0; i < M; i++)
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299 {
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300 past_r2_q[i] = 0; /* Past quantized prediction error */
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301 past_lsf_q[i] = mean_lsf[i]; /* Past dequantized lsfs */
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302 lsf_p_CN[i] = mean_lsf[i]; /* CNI */
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303 lsf_new_CN[i] = mean_lsf[i]; /* CNI */
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304 lsf_old_CN[i] = mean_lsf[i]; /* CNI */
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305 }
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306
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307 /* Variable in dec_lag6.c: */
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308 old_T0 = 40; /* Old integer lag */
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309
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310 /* Variable in preemph.c: */
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311 mem_pre = 0; /* Filter memory */
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312
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313 /* Variables in pstfilt2.c: */
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314 Init_Post_Filter ();
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315
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316 return;
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317 }
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318
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319 /***************************************************************************
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320 *
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321 * FUNCTION NAME: reset_dec
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322 *
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323 * PURPOSE:
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324 * resets all of the state variables for the decoder, and for the
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325 * receive DTX and Comfort Noise.
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326 *
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327 * INPUT:
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328 * None
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329 *
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330 * OUTPUT:
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331 * None
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332 *
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333 * RETURN:
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334 * None
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335 *
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336 **************************************************************************/
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337
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338 void reset_dec (void)
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339 {
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340 decoder_reset (); /* reset all the state variables in the speech decoder*/
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341 reset_rx_dtx (); /* reset all the receive DTX and CN state variables */
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342
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343 return;
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344 }