FreeCalypso > hg > gsm-codec-lib
view libtwamr/qua_gain.h @ 377:b02e043dcba0
libtwamr: integrate qua_gain.c
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 06 May 2024 04:24:17 +0000 |
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/* ******************************************************************************** * * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 * R99 Version 3.3.0 * REL-4 Version 4.1.0 * ******************************************************************************** * * File : qua_gain.h * Purpose : Quantization of pitch and codebook gains. * ******************************************************************************** */ #ifndef qua_gain_h #define qua_gain_h "$Id $" /* ******************************************************************************** * INCLUDE FILES ******************************************************************************** */ #include "tw_amr.h" #include "typedef.h" /* ******************************************************************************** * DECLARATION OF PROTOTYPES ******************************************************************************** */ /************************************************************************* * * FUNCTION: Qua_gain() * * PURPOSE: Quantization of pitch and codebook gains. * (using predicted codebook gain) * *************************************************************************/ Word16 Qua_gain( /* o : index of quantization. */ enum Mode mode, /* i : AMR mode */ Word16 exp_gcode0, /* i : predicted CB gain (exponent), Q0 */ Word16 frac_gcode0, /* i : predicted CB gain (fraction), Q15 */ Word16 frac_coeff[], /* i : energy coeff. (5), fraction part, Q15 */ Word16 exp_coeff[], /* i : energy coeff. (5), exponent part, Q0 */ /* (frac_coeff and exp_coeff computed in */ /* calc_filt_energies()) */ Word16 gp_limit, /* i : pitch gain limit */ Word16 *gain_pit, /* o : Pitch gain, Q14 */ Word16 *gain_cod, /* o : Code gain, Q1 */ Word16 *qua_ener_MR122, /* o : quantized energy error, Q10 */ /* (for MR122 MA predictor update) */ Word16 *qua_ener /* o : quantized energy error, Q10 */ /* (for other MA predictor update) */ ); #endif