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comparison libtwamr/qgain795.h @ 376:2aa98051d445

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libtwamr: integrate qgain795.c
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 06 May 2024 04:20:11 +0000
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375:1d2b39027b70 376:2aa98051d445
1 /*
2 ********************************************************************************
3 *
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
5 * R99 Version 3.3.0
6 * REL-4 Version 4.1.0
7 *
8 ********************************************************************************
9 *
10 * File : qgain795.h
11 * Purpose : (pre-) quantization of pitch gain for MR795
12 *
13 ********************************************************************************
14 */
15 #ifndef qgain795_h
16 #define qgain795_h "$Id $"
17
18 /*
19 ********************************************************************************
20 * INCLUDE FILES
21 ********************************************************************************
22 */
23 #include "typedef.h"
24 #include "g_adapt.h"
25
26 /*
27 ********************************************************************************
28 * DECLARATION OF PROTOTYPES
29 ********************************************************************************
30 */
31
32 /*************************************************************************
33 *
34 * FUNCTION: MR795_gain_quant
35 *
36 * PURPOSE: pitch and codebook quantization for MR795
37 *
38 *************************************************************************/
39 void
40 MR795_gain_quant(
41 GainAdaptState *adapt_st, /* i/o: gain adapter state structure */
42 Word16 res[], /* i : LP residual, Q0 */
43 Word16 exc[], /* i : LTP excitation (unfiltered), Q0 */
44 Word16 code[], /* i : CB innovation (unfiltered), Q13 */
45 Word16 frac_coeff[], /* i : coefficients (5), Q15 */
46 Word16 exp_coeff[], /* i : energy coefficients (5), Q0 */
47 /* coefficients from calc_filt_ener() */
48 Word16 exp_code_en, /* i : innovation energy (exponent), Q0 */
49 Word16 frac_code_en, /* i : innovation energy (fraction), Q15 */
50 Word16 exp_gcode0, /* i : predicted CB gain (exponent), Q0 */
51 Word16 frac_gcode0, /* i : predicted CB gain (fraction), Q15 */
52 Word16 L_subfr, /* i : Subframe length */
53 Word16 cod_gain_frac, /* i : opt. codebook gain (fraction),Q15 */
54 Word16 cod_gain_exp, /* i : opt. codebook gain (exponent), Q0 */
55 Word16 gp_limit, /* i : pitch gain limit */
56 Word16 *gain_pit, /* i/o: Pitch gain (unquant/quant), Q14 */
57 Word16 *gain_cod, /* o : Code gain, Q1 */
58 Word16 *qua_ener_MR122, /* o : quantized energy error, Q10 */
59 /* (for MR122 MA predictor update) */
60 Word16 *qua_ener, /* o : quantized energy error, Q10 */
61 /* (for other MA predictor update) */
62 Word16 **anap /* o : Index of quantization */
63 /* (first gain pitch, then code pitch)*/
64 );
65
66 #endif