annotate amrconv/param_asm.c @ 485:751f06541fbb

doc/Codec-utils: clarify lack of DHF in gsmfr-decode-rb
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:47:22 +0000
parents 78d1a6513393
children
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211
78d1a6513393 amrconv: new program amr-cod-parse
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1 /*
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2 * This C module is common between amr-cod-parse and amr-ietf-parse
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3 * utilities. It contains the function that takes an array of bits
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4 * in the codec's natural order and reassembles these bits into
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5 * an array of codec parameters.
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6 */
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7
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8 #include <stdint.h>
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9 #include "amr_defs.h"
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10
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11 /* parameter sizes (# of bits), one table per mode */
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12
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13 static const uint8_t bitno_MR475[PRMNO_MR475] = {
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14 8, 8, 7, /* LSP VQ */
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15 8, 7, 2, 8, /* first subframe */
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16 4, 7, 2, /* second subframe */
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17 4, 7, 2, 8, /* third subframe */
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18 4, 7, 2, /* fourth subframe */
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19 };
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20
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21 static const uint8_t bitno_MR515[PRMNO_MR515] = {
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22 8, 8, 7, /* LSP VQ */
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23 8, 7, 2, 6, /* first subframe */
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24 4, 7, 2, 6, /* second subframe */
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25 4, 7, 2, 6, /* third subframe */
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26 4, 7, 2, 6, /* fourth subframe */
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27 };
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28
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29 static const uint8_t bitno_MR59[PRMNO_MR59] = {
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30 8, 9, 9, /* LSP VQ */
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31 8, 9, 2, 6, /* first subframe */
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32 4, 9, 2, 6, /* second subframe */
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33 8, 9, 2, 6, /* third subframe */
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34 4, 9, 2, 6, /* fourth subframe */
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35 };
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36
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37 static const uint8_t bitno_MR67[PRMNO_MR67] = {
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38 8, 9, 9, /* LSP VQ */
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39 8, 11, 3, 7, /* first subframe */
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40 4, 11, 3, 7, /* second subframe */
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41 8, 11, 3, 7, /* third subframe */
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42 4, 11, 3, 7, /* fourth subframe */
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43 };
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44
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45 static const uint8_t bitno_MR74[PRMNO_MR74] = {
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46 8, 9, 9, /* LSP VQ */
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47 8, 13, 4, 7, /* first subframe */
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48 5, 13, 4, 7, /* second subframe */
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49 8, 13, 4, 7, /* third subframe */
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50 5, 13, 4, 7, /* fourth subframe */
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51 };
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52
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53 static const uint8_t bitno_MR795[PRMNO_MR795] = {
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54 9, 9, 9, /* LSP VQ */
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55 8, 13, 4, 4, 5, /* first subframe */
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56 6, 13, 4, 4, 5, /* second subframe */
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57 8, 13, 4, 4, 5, /* third subframe */
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58 6, 13, 4, 4, 5, /* fourth subframe */
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59 };
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60
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61 static const uint8_t bitno_MR102[PRMNO_MR102] = {
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62 8, 9, 9, /* LSP VQ */
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63 8, 1, 1, 1, 1, 10, 10, 7, 7, /* first subframe */
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64 5, 1, 1, 1, 1, 10, 10, 7, 7, /* second subframe */
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65 8, 1, 1, 1, 1, 10, 10, 7, 7, /* third subframe */
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66 5, 1, 1, 1, 1, 10, 10, 7, 7, /* fourth subframe */
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67 };
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68
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69 static const uint8_t bitno_MR122[PRMNO_MR122] = {
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70 7, 8, 9, 8, 6, /* LSP VQ */
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71 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* first subframe */
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72 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* second subframe */
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73 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5, /* third subframe */
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74 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 5 /* fourth subframe */
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75 };
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76
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77 static const uint8_t bitno_MRDTX[PRMNO_MRDTX] = {
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78 3,
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79 8, 9, 9,
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80 6
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81 };
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82
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83 static void
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84 bits_to_params(bits, params, table, nparam)
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85 const uint8_t *bits;
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86 uint16_t *params;
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87 const uint8_t *table;
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88 unsigned nparam;
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89 {
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90 const uint8_t *p = bits;
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91 const uint8_t *t = table;
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92 unsigned n, m, acc;
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93
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94 for (n = 0; n < nparam; n++) {
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95 acc = 0;
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96 for (m = 0; m < *t; m++) {
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97 acc <<= 1;
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98 if (*p)
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99 acc |= 1;
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100 p++;
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101 }
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102 params[n] = acc;
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103 t++;
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104 }
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105 }
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106
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107 reassemble_amr_params(bits, params, mode)
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108 const uint8_t *bits;
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109 uint16_t *params;
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110 unsigned mode;
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111 {
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112 switch (mode) {
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113 case MR475:
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114 bits_to_params(bits, params, bitno_MR475, PRMNO_MR475);
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115 return(0);
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116 case MR515:
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117 bits_to_params(bits, params, bitno_MR515, PRMNO_MR515);
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118 return(0);
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119 case MR59:
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120 bits_to_params(bits, params, bitno_MR59, PRMNO_MR59);
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121 return(0);
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122 case MR67:
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123 bits_to_params(bits, params, bitno_MR67, PRMNO_MR67);
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124 return(0);
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125 case MR74:
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126 bits_to_params(bits, params, bitno_MR74, PRMNO_MR74);
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127 return(0);
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128 case MR795:
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129 bits_to_params(bits, params, bitno_MR795, PRMNO_MR795);
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130 return(0);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 case MR102:
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
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132 bits_to_params(bits, params, bitno_MR102, PRMNO_MR102);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
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133 return(0);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 case MR122:
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 bits_to_params(bits, params, bitno_MR122, PRMNO_MR122);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
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136 return(0);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 case MRDTX:
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 bits_to_params(bits, params, bitno_MRDTX, PRMNO_MRDTX);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
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139 return(0);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 default:
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
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141 return(-1);
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 }
78d1a6513393 amrconv: new program amr-cod-parse
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 }