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annotate libtwamr/c_g_aver.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 dc3b7caa59c4
children
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dc3b7caa59c4 libtwamr: integrate c_g_aver.c
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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 : c_g_aver.h
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11 * Purpose : Background noise source charateristic detector (SCD)
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12 *
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13 ********************************************************************************
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14 */
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15 #ifndef c_g_aver_h
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16 #define c_g_aver_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 "cnst.h"
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26
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27 /*
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28 ********************************************************************************
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29 * LOCAL VARIABLES AND TABLES
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30 ********************************************************************************
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31 */
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32 #define L_CBGAINHIST 7
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33
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34 /*
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35 ********************************************************************************
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36 * DEFINITION OF DATA TYPES
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37 ********************************************************************************
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38 */
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39 typedef struct{
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40 /* history vector of past synthesis speech energy */
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41 Word16 cbGainHistory[L_CBGAINHIST];
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42
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43 /* state flags */
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44 Word16 hangVar; /* counter; */
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45 Word16 hangCount; /* counter; */
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46
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47 } Cb_gain_averageState;
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48
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49 /*
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50 ********************************************************************************
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51 * DECLARATION OF PROTOTYPES
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52 ********************************************************************************
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53 */
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54 /*
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55 **************************************************************************
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56 *
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57 * Function : Cb_gain_average_reset
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58 * Purpose : Resets state memory
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59 * Returns : 0 on success
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60 *
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61 **************************************************************************
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62 */
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63 void Cb_gain_average_reset (Cb_gain_averageState *st);
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64
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65 /*
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66 **************************************************************************
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67 *
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68 * Function : Cb_gain_average
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69 * Purpose : Charaterice synthesis speech and detect background noise
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70 * Returns : background noise decision; 0 = bgn, 1 = no bgn
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71 *
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72 **************************************************************************
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73 */
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74 Word16 Cb_gain_average (
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75 Cb_gain_averageState *st, /* i/o : State variables for CB gain avergeing */
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76 enum Mode mode, /* i : AMR mode */
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77 Word16 gain_code, /* i : CB gain Q1 */
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78 Word16 lsp[], /* i : The LSP for the current frame Q15 */
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79 Word16 lspAver[], /* i : The average of LSP for 8 frames Q15 */
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80 Word16 bfi, /* i : bad frame indication flag */
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81 Word16 prev_bf, /* i : previous bad frame indication flag */
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82 Word16 pdfi, /* i : potential degraded bad frame ind flag */
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83 Word16 prev_pdf, /* i : prev pot. degraded bad frame ind flag */
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84 Word16 inBackgroundNoise, /* i : background noise decision */
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85 Word16 voicedHangover /* i : # of frames after last voiced frame */
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86 );
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87
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88 #endif