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comparison libtwamr/qua_gain.h @ 377:b02e043dcba0

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libtwamr: integrate qua_gain.c
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 06 May 2024 04:24:17 +0000
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376:2aa98051d445 377:b02e043dcba0
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 : qua_gain.h
11 * Purpose : Quantization of pitch and codebook gains.
12 *
13 ********************************************************************************
14 */
15 #ifndef qua_gain_h
16 #define qua_gain_h "$Id $"
17
18 /*
19 ********************************************************************************
20 * INCLUDE FILES
21 ********************************************************************************
22 */
23 #include "tw_amr.h"
24 #include "typedef.h"
25
26 /*
27 ********************************************************************************
28 * DECLARATION OF PROTOTYPES
29 ********************************************************************************
30 */
31 /*************************************************************************
32 *
33 * FUNCTION: Qua_gain()
34 *
35 * PURPOSE: Quantization of pitch and codebook gains.
36 * (using predicted codebook gain)
37 *
38 *************************************************************************/
39 Word16
40 Qua_gain( /* o : index of quantization. */
41 enum Mode mode, /* i : AMR mode */
42 Word16 exp_gcode0, /* i : predicted CB gain (exponent), Q0 */
43 Word16 frac_gcode0, /* i : predicted CB gain (fraction), Q15 */
44 Word16 frac_coeff[], /* i : energy coeff. (5), fraction part, Q15 */
45 Word16 exp_coeff[], /* i : energy coeff. (5), exponent part, Q0 */
46 /* (frac_coeff and exp_coeff computed in */
47 /* calc_filt_energies()) */
48 Word16 gp_limit, /* i : pitch gain limit */
49 Word16 *gain_pit, /* o : Pitch gain, Q14 */
50 Word16 *gain_cod, /* o : Code gain, Q1 */
51 Word16 *qua_ener_MR122, /* o : quantized energy error, Q10 */
52 /* (for MR122 MA predictor update) */
53 Word16 *qua_ener /* o : quantized energy error, Q10 */
54 /* (for other MA predictor update) */
55 );
56 #endif