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annotate libgsmefr/d_homing.c @ 183:452c1d5a6268

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libgsmefr BFI w/o data: emit zero output after decoder reset In real-life usage, each EFR decoder session will most likely begin with lots of BFI frames before the first real frame arrives. However, because the spec-defined home state of the decoder is speech rather than CN, our regular logic for BFI w/o data would have to feed pseudorandom noise to the decoder (in the "fixed codebook excitation pulses" part), which is silly to do at the beginning of the decoder session right out of reset. Therefore, let's check reset_flag_old, and if we are still in the reset state, simply emit zero output.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 03 Jan 2023 00:12:18 +0000
parents eefef9f6d533
children
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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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61 * FCB-GAIN 1 3 0x0003
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62 * LTP-LAG 2 54 0x0036
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64 * PULSE2_1 8 0x0008
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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
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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 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 0x00b4, /* LPC 3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 0x0090, /* LPC 4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 0x003e, /* LPC 5 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 0x0156, /* LTP-LAG 1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 0x000b, /* LTP-GAIN 1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 0x0000, /* PULSE 1_1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 0x0001, /* PULSE 1_2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 0x000f, /* PULSE 1_3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 0x0001, /* PULSE 1_4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 0x000d, /* PULSE 1_5 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 0x0000, /* PULSE 1_6 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 0x0003, /* PULSE 1_7 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 0x0000, /* PULSE 1_8 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 0x0003, /* PULSE 1_9 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 0x0000, /* PULSE 1_10 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 0x0003, /* FCB-GAIN 1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 0x0036, /* LTP-LAG 2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 0x0001, /* LTP-GAIN 2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 0x0008, /* PULSE 2_1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 0x0008, /* PULSE 2_2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 0x0005, /* PULSE 2_3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 0x0008, /* PULSE 2_4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 0x0001, /* PULSE 2_5 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 0x0000, /* PULSE 2_6 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 0x0000, /* PULSE 2_7 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 0x0001, /* PULSE 2_8 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 0x0001, /* PULSE 2_9 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 0x0000, /* PULSE 2_10 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 0x0000, /* FCB-GAIN 2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 0x0156, /* LTP-LAG 3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 0x0000, /* LTP-GAIN 3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 0x0000, /* PULSE 3_1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 0x0000, /* PULSE 3_2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 0x0000, /* PULSE 3_3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 0x0000, /* PULSE 3_4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 0x0000, /* PULSE 3_5 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 0x0000, /* PULSE 3_6 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 0x0000, /* PULSE 3_7 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 0x0000, /* PULSE 3_8 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 0x0000, /* PULSE 3_9 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 0x0000, /* PULSE 3_10 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 0x0000, /* FCB-GAIN 3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 0x0036, /* LTP-LAG 4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 0x000b, /* LTP-GAIN 4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 0x0000, /* PULSE 4_1 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 0x0000, /* PULSE 4_2 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 0x0000, /* PULSE 4_3 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 0x0000, /* PULSE 4_4 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 0x0000, /* PULSE 4_5 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 0x0000, /* PULSE 4_6 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 0x0000, /* PULSE 4_7 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 0x0000, /* PULSE 4_8 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 0x0000, /* PULSE 4_9 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 0x0000, /* PULSE 4_10 */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 0x0000 /* FCB-GAIN 4 */ };
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 Word16 i, j;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 for (i = 0; i < nbr_of_params; i++)
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 {
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 j = parm[i] ^ dhf_mask[i];
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 if (j)
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 break;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 }
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 return !j;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 }
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 /***************************************************************************
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 * FUNCTION NAME: decoder_reset
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 * PURPOSE:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 * resets all of the state variables for the decoder
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 * INPUT:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 * None
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 * OUTPUT:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 * None
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 * RETURN:
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 * None
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 *
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 **************************************************************************/
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
214 void decoder_reset (struct EFR_decoder_state *st)
53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 {
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 Word16 i;
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 /* reset all the decoder state variables */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 /* ------------------------------------- */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 /* Variable in decoder.c: */
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
222 Set_zero (st->synth_buf, M);
53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 /* Variables in dec_12k2.c: */
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
225 Init_Decoder_12k2 (st);
53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 /* Variable in agc.c: */
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
228 st->past_gain = 4096;
53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 /* Variables in d_gains.c: */
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 for (i = 0; i < 5; i++)
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 {
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
233 st->pbuf[i] = 410; /* Error concealment */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
234 st->gbuf[i] = 1; /* Error concealment */
53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 }
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
237 st->past_gain_pit = 0; /* Error concealment */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
238 st->prev_gp = 4096; /* Error concealment */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
239 st->past_gain_code = 0; /* Error concealment */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
240 st->prev_gc = 1; /* Error concealment */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
241 st->gcode0_CN = 0; /* CNI */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
242 st->gain_code_old_CN = 0; /* CNI */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
243 st->gain_code_new_CN = 0; /* CNI */
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
244 st->gain_code_muting_CN = 0; /* CNI */
53
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 for (i = 0; i < 4; i++)
49dd1ac8e75b libgsmefr: import most *.c files from ETSI source
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 {
62
c87ccddf3fd1 libgsmefr: d_homing.c compiles
Mychaela Falconia <falcon@freecalypso.org>
parents: 53
diff changeset
248 st->past_qua_en[i] = -2381; /* past quantized energies */
53
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249 }
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250
62
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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 {
62
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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
62
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297 void EFR_decoder_reset (struct EFR_decoder_state *st)
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298 {
62
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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
160
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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
53
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307 return;
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308 }