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annotate libtwamr/dtx_dec.h @ 585:3c6bf0d26ee7 default tip

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TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents 5a1d18542f8a
children
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1 /*
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2 *****************************************************************************
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3 *
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
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5 * R99 Version 3.3.0
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6 * REL-4 Version 4.1.0
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7 *
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8 *****************************************************************************
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9 *
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10 * File : dtx_dec.h
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11 * Purpose : Decode comfort noice when in DTX
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12 *
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13 *****************************************************************************
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14 */
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15 #ifndef dtx_dec_h
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16 #define dtx_dec_h "$Id $"
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17
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18 /*
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19 *****************************************************************************
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20 * INCLUDE FILES
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21 *****************************************************************************
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22 */
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23 #include "tw_amr.h"
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24 #include "typedef.h"
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25 #include "dtx_common.h"
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26 #include "d_plsf.h"
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27 #include "gc_pred.h"
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28 #include "c_g_aver.h"
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29
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30 /*
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31 *****************************************************************************
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32 * LOCAL VARIABLES AND TABLES
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33 *****************************************************************************
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34 */
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35 enum DTXStateType {SPEECH = 0, DTX, DTX_MUTE};
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36
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37 #define DTX_MAX_EMPTY_THRESH 50
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38
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39 /*
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40 *****************************************************************************
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41 * DEFINITION OF DATA TYPES
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42 *****************************************************************************
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43 */
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44
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45 typedef struct {
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46 Word16 since_last_sid;
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47 Word16 true_sid_period_inv;
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48 Word16 log_en;
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49 Word16 old_log_en;
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50 Word32 L_pn_seed_rx;
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51 Word16 lsp[M];
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52 Word16 lsp_old[M];
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53
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54 Word16 lsf_hist[M*DTX_HIST_SIZE];
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55 Word16 lsf_hist_ptr;
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56 Word16 lsf_hist_mean[M*DTX_HIST_SIZE];
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57 Word16 log_pg_mean;
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58 Word16 log_en_hist[DTX_HIST_SIZE];
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59 Word16 log_en_hist_ptr;
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60
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61 Word16 log_en_adjust;
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62
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63 Word16 dtxHangoverCount;
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64 Word16 decAnaElapsedCount;
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65
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66 Word16 sid_frame;
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67 Word16 valid_data;
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68 Word16 dtxHangoverAdded;
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69
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70 enum DTXStateType dtxGlobalState; /* contains previous state */
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71 /* updated in main decoder */
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72
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73 Word16 data_updated; /* marker to know if CNI data is ever renewed */
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74
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75 } dtx_decState;
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76
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77 /*
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78 *****************************************************************************
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79 * DECLARATION OF PROTOTYPES
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80 *****************************************************************************
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81 */
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82
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83 /*
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84 **************************************************************************
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85 *
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86 * Function : dtx_dec_reset
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87 * Purpose : Resets state memory
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88 * Returns : 0 on success
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89 *
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90 **************************************************************************
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91 */
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92 void dtx_dec_reset (dtx_decState *st);
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93
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94 /*
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95 **************************************************************************
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96 *
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97 * Function : dtx_dec
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98 * Purpose :
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99 * Description :
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100 *
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101 **************************************************************************
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102 */
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103 int dtx_dec(
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104 dtx_decState *st, /* i/o : State struct */
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105 Word16 mem_syn[], /* i/o : AMR decoder state */
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106 D_plsfState* lsfState, /* i/o : decoder lsf states */
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107 gc_predState* predState, /* i/o : prediction states */
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108 Cb_gain_averageState* averState, /* i/o : CB gain average states */
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109 enum DTXStateType new_state, /* i : new DTX state */
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110 enum Mode mode, /* i : AMR mode */
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111 Word16 parm[], /* i : Vector of synthesis parameters */
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112 Word16 synth[], /* o : synthesised speech */
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113 Word16 A_t[] /* o : decoded LP filter in 4 subframes*/
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114 );
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115
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116 void dtx_dec_activity_update(dtx_decState *st,
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117 Word16 lsf[],
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118 Word16 frame[]);
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119
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120 /*
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121 **************************************************************************
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122 *
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123 * Function : rx_dtx_handler
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124 * Purpose : reads the frame type and checks history
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125 * Description : to decide what kind of DTX/CNI action to perform
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126
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127 **************************************************************************
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128 */
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129 enum DTXStateType rx_dtx_handler(dtx_decState *st, /* i/o : State struct */
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130 enum RXFrameType frame_type /* i : Frame type */
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131 );
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132
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133 #endif