FreeCalypso > hg > gsm-codec-lib
annotate libgsmefr/d_homing.c @ 509:b7ddcb178ef6 default tip
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author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 17 Aug 2024 23:11:51 +0000 |
parents | eefef9f6d533 |
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rev | line 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 "gsm_efr.h" |
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22 #include "typedef.h" |
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23 #include "namespace.h" |
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24 #include "cnst.h" |
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25 #include "dtx.h" |
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26 #include "codec.h" |
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27 #include "memops.h" |
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28 #include "dec_state.h" |
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29 #include "d_homing.h" |
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30 #include "q_plsf5_tab.h" |
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31 |
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32 #define PRM_NO 57 |
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33 |
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34 /*************************************************************************** |
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35 * |
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36 * FUNCTION NAME: decoder_homing_frame_test |
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37 * |
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38 * PURPOSE: |
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39 * Checks if a frame of input speech parameters matches the Decoder |
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40 * Homing Frame pattern, which is: |
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41 * |
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42 * parameter decimal value hexidecimal value |
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43 * --------- ------------- ----------------- |
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44 * LPC 1 4 0x0004 |
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45 * LPC 2 47 0x002F |
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46 * LPC 3 180 0x00B4 |
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47 * LPC 4 144 0x0090 |
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48 * LPC 5 62 0x003E |
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49 * LTP-LAG 1 342 0x0156 |
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50 * LTP-GAIN 1 11 0x000B |
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51 * PULSE1_1 0 0x0000 |
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52 * PULSE1_2 1 0x0001 |
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53 * PULSE1_3 15 0x000F |
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54 * PULSE1_4 1 0x0001 |
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55 * PULSE1_5 13 0x000D |
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56 * PULSE1_6 0 0x0000 |
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57 * PULSE1_7 3 0x0003 |
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58 * PULSE1_8 0 0x0000 |
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59 * PULSE1_9 3 0x0003 |
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60 * PULSE1_10 0 0x0000 |
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61 * FCB-GAIN 1 3 0x0003 |
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62 * LTP-LAG 2 54 0x0036 |
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63 * LTP-GAIN 2 1 0x0001 |
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64 * PULSE2_1 8 0x0008 |
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65 * PULSE2_2 8 0x0008 |
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66 * PULSE2_3 5 0x0005 |
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67 * PULSE2_4 8 0x0008 |
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68 * PULSE2_5 1 0x0001 |
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69 * PULSE2_6 0 0x0000 |
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70 * PULSE2_7 0 0x0000 |
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71 * PULSE2_8 1 0x0001 |
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72 * PULSE2_9 1 0x0001 |
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73 * PULSE2_10 0 0x0000 |
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74 * FCB-GAIN 2 0 0x0000 |
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75 * LTP-LAG 3 342 0x0156 |
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76 * LTP-GAIN 3 0 0x0000 |
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77 * PULSE3_1 0 0x0000 |
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78 * PULSE3_2 0 0x0000 |
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79 * PULSE3_3 0 0x0000 |
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80 * PULSE3_4 0 0x0000 |
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81 * PULSE3_5 0 0x0000 |
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82 * PULSE3_6 0 0x0000 |
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83 * PULSE3_7 0 0x0000 |
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84 * PULSE3_8 0 0x0000 |
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85 * PULSE3_9 0 0x0000 |
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86 * PULSE3_10 0 0x0000 |
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87 * FCB-GAIN 3 0 0x0000 |
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88 * LTP-LAG 4 54 0x0036 |
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89 * LTP-GAIN 4 11 0x000B |
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90 * PULSE4_1 0 0x0000 |
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91 * PULSE4_2 0 0x0000 |
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92 * PULSE4_3 0 0x0000 |
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93 * PULSE4_4 0 0x0000 |
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94 * PULSE4_5 0 0x0000 |
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95 * PULSE4_6 0 0x0000 |
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96 * PULSE4_7 0 0x0000 |
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97 * PULSE4_8 0 0x0000 |
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98 * PULSE4_9 0 0x0000 |
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99 * PULSE4_10 0 0x0000 |
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100 * FCB-GAIN 4 0 0x0000 |
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101 * |
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102 * INPUT: |
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103 * parm[] one frame of speech parameters in parallel format |
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104 * |
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105 * nbr_of_params |
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106 * the number of consecutive parameters in parm[] to match |
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107 * |
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108 * OUTPUT: |
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109 * None |
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110 * |
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111 * RETURN: |
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112 * 0 input frame does not match the Decoder Homing Frame pattern. |
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113 * 1 input frame matches the Decoder Homing Frame pattern. |
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114 * |
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115 **************************************************************************/ |
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116 |
94
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117 Word16 decoder_homing_frame_test (const Word16 parm[], Word16 nbr_of_params) |
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118 { |
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119 static const Word16 dhf_mask[PRM_NO] = |
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120 { |
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121 0x0004, /* LPC 1 */ |
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122 0x002f, /* LPC 2 */ |
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123 0x00b4, /* LPC 3 */ |
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124 0x0090, /* LPC 4 */ |
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125 0x003e, /* LPC 5 */ |
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126 |
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127 0x0156, /* LTP-LAG 1 */ |
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128 0x000b, /* LTP-GAIN 1 */ |
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129 0x0000, /* PULSE 1_1 */ |
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130 0x0001, /* PULSE 1_2 */ |
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131 0x000f, /* PULSE 1_3 */ |
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132 0x0001, /* PULSE 1_4 */ |
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133 0x000d, /* PULSE 1_5 */ |
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134 0x0000, /* PULSE 1_6 */ |
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135 0x0003, /* PULSE 1_7 */ |
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136 0x0000, /* PULSE 1_8 */ |
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137 0x0003, /* PULSE 1_9 */ |
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138 0x0000, /* PULSE 1_10 */ |
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139 0x0003, /* FCB-GAIN 1 */ |
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140 |
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141 0x0036, /* LTP-LAG 2 */ |
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142 0x0001, /* LTP-GAIN 2 */ |
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143 0x0008, /* PULSE 2_1 */ |
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144 0x0008, /* PULSE 2_2 */ |
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145 0x0005, /* PULSE 2_3 */ |
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146 0x0008, /* PULSE 2_4 */ |
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147 0x0001, /* PULSE 2_5 */ |
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148 0x0000, /* PULSE 2_6 */ |
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149 0x0000, /* PULSE 2_7 */ |
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150 0x0001, /* PULSE 2_8 */ |
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151 0x0001, /* PULSE 2_9 */ |
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152 0x0000, /* PULSE 2_10 */ |
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153 0x0000, /* FCB-GAIN 2 */ |
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154 |
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155 0x0156, /* LTP-LAG 3 */ |
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156 0x0000, /* LTP-GAIN 3 */ |
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157 0x0000, /* PULSE 3_1 */ |
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158 0x0000, /* PULSE 3_2 */ |
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159 0x0000, /* PULSE 3_3 */ |
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160 0x0000, /* PULSE 3_4 */ |
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161 0x0000, /* PULSE 3_5 */ |
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162 0x0000, /* PULSE 3_6 */ |
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163 0x0000, /* PULSE 3_7 */ |
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164 0x0000, /* PULSE 3_8 */ |
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165 0x0000, /* PULSE 3_9 */ |
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166 0x0000, /* PULSE 3_10 */ |
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167 0x0000, /* FCB-GAIN 3 */ |
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168 |
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169 0x0036, /* LTP-LAG 4 */ |
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170 0x000b, /* LTP-GAIN 4 */ |
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171 0x0000, /* PULSE 4_1 */ |
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172 0x0000, /* PULSE 4_2 */ |
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173 0x0000, /* PULSE 4_3 */ |
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174 0x0000, /* PULSE 4_4 */ |
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175 0x0000, /* PULSE 4_5 */ |
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176 0x0000, /* PULSE 4_6 */ |
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177 0x0000, /* PULSE 4_7 */ |
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178 0x0000, /* PULSE 4_8 */ |
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179 0x0000, /* PULSE 4_9 */ |
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180 0x0000, /* PULSE 4_10 */ |
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181 0x0000 /* FCB-GAIN 4 */ }; |
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182 |
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183 Word16 i, j; |
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184 |
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185 for (i = 0; i < nbr_of_params; i++) |
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186 { |
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187 j = parm[i] ^ dhf_mask[i]; |
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188 |
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189 if (j) |
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190 break; |
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191 } |
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192 |
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193 return !j; |
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194 } |
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195 |
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196 /*************************************************************************** |
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197 * |
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198 * FUNCTION NAME: decoder_reset |
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199 * |
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200 * PURPOSE: |
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201 * resets all of the state variables for the decoder |
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202 * |
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203 * INPUT: |
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204 * None |
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205 * |
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206 * OUTPUT: |
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207 * None |
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208 * |
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209 * RETURN: |
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210 * None |
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211 * |
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212 **************************************************************************/ |
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213 |
62
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214 void decoder_reset (struct EFR_decoder_state *st) |
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215 { |
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216 Word16 i; |
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217 |
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218 /* reset all the decoder state variables */ |
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219 /* ------------------------------------- */ |
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220 |
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221 /* Variable in decoder.c: */ |
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222 Set_zero (st->synth_buf, M); |
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223 |
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224 /* Variables in dec_12k2.c: */ |
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225 Init_Decoder_12k2 (st); |
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226 |
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227 /* Variable in agc.c: */ |
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228 st->past_gain = 4096; |
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229 |
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230 /* Variables in d_gains.c: */ |
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231 for (i = 0; i < 5; i++) |
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232 { |
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233 st->pbuf[i] = 410; /* Error concealment */ |
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234 st->gbuf[i] = 1; /* Error concealment */ |
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235 } |
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236 |
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237 st->past_gain_pit = 0; /* Error concealment */ |
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238 st->prev_gp = 4096; /* Error concealment */ |
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239 st->past_gain_code = 0; /* Error concealment */ |
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240 st->prev_gc = 1; /* Error concealment */ |
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241 st->gcode0_CN = 0; /* CNI */ |
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242 st->gain_code_old_CN = 0; /* CNI */ |
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243 st->gain_code_new_CN = 0; /* CNI */ |
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244 st->gain_code_muting_CN = 0; /* CNI */ |
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245 |
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246 for (i = 0; i < 4; i++) |
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247 { |
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248 st->past_qua_en[i] = -2381; /* past quantized energies */ |
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249 } |
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250 |
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251 st->pred[0] = 44; /* MA prediction coeff */ |
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252 st->pred[1] = 37; /* MA prediction coeff */ |
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253 st->pred[2] = 22; /* MA prediction coeff */ |
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254 st->pred[3] = 12; /* MA prediction coeff */ |
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255 |
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256 /* Variables in d_plsf_5.c: */ |
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257 for (i = 0; i < M; i++) |
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258 { |
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259 st->past_r2_q[i] = 0; /* Past quantized prediction error */ |
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260 st->past_lsf_q[i] = mean_lsf[i]; /* Past dequantized lsfs */ |
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261 st->lsf_p_CN[i] = mean_lsf[i]; /* CNI */ |
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262 st->lsf_new_CN[i] = mean_lsf[i]; /* CNI */ |
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263 st->lsf_old_CN[i] = mean_lsf[i]; /* CNI */ |
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264 } |
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265 |
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266 /* Variable in dec_lag6.c: */ |
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267 st->old_T0 = 40; /* Old integer lag */ |
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268 |
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269 /* Variable in preemph.c: */ |
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270 st->mem_pre = 0; /* Filter memory */ |
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271 |
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272 /* Variables in pstfilt2.c: */ |
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273 Init_Post_Filter (st); |
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274 |
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275 return; |
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276 } |
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277 |
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278 /*************************************************************************** |
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279 * |
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280 * FUNCTION NAME: reset_dec |
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281 * |
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282 * PURPOSE: |
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283 * resets all of the state variables for the decoder, and for the |
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284 * receive DTX and Comfort Noise. |
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285 * |
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286 * INPUT: |
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287 * None |
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288 * |
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289 * OUTPUT: |
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290 * None |
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291 * |
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292 * RETURN: |
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293 * None |
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294 * |
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295 **************************************************************************/ |
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296 |
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297 void EFR_decoder_reset (struct EFR_decoder_state *st) |
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298 { |
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299 st->reset_flag_old = 1; |
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300 |
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301 decoder_reset (st); /* reset all the state variables in the speech decoder*/ |
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302 reset_rx_dtx (st); /* reset all the receive DTX and CN state variables */ |
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303 |
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304 /* Themyscira libgsmefr addition for no-data BFI handling */ |
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305 st->L_pn_seed_nodata = PN_INITIAL_SEED; |
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306 |
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307 return; |
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308 } |