FreeCalypso > hg > gsm-codec-lib
annotate amrconv/param_asm.c @ 481:cc0c244bd233
doc/AMR-library-tests: new article
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 20 May 2024 01:02:37 +0000 |
parents | 78d1a6513393 |
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rev | line source |
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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); |
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131 case MR102: |
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132 bits_to_params(bits, params, bitno_MR102, PRMNO_MR102); |
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133 return(0); |
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134 case MR122: |
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135 bits_to_params(bits, params, bitno_MR122, PRMNO_MR122); |
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136 return(0); |
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137 case MRDTX: |
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138 bits_to_params(bits, params, bitno_MRDTX, PRMNO_MRDTX); |
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139 return(0); |
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140 default: |
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141 return(-1); |
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142 } |
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143 } |