| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566 |
- /*
- ********************************************************************************
- *
- * 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 : qgain795.h
- * Purpose : (pre-) quantization of pitch gain for MR795
- *
- ********************************************************************************
- */
- #ifndef qgain795_h
- #define qgain795_h "$Id $"
-
- /*
- ********************************************************************************
- * INCLUDE FILES
- ********************************************************************************
- */
- #include "typedef.h"
- #include "g_adapt.h"
- /*
- ********************************************************************************
- * DECLARATION OF PROTOTYPES
- ********************************************************************************
- */
- /*************************************************************************
- *
- * FUNCTION: MR795_gain_quant
- *
- * PURPOSE: pitch and codebook quantization for MR795
- *
- *************************************************************************/
- void
- MR795_gain_quant(
- GainAdaptState *adapt_st, /* i/o: gain adapter state structure */
- Word16 res[], /* i : LP residual, Q0 */
- Word16 exc[], /* i : LTP excitation (unfiltered), Q0 */
- Word16 code[], /* i : CB innovation (unfiltered), Q13 */
- Word16 frac_coeff[], /* i : coefficients (5), Q15 */
- Word16 exp_coeff[], /* i : energy coefficients (5), Q0 */
- /* coefficients from calc_filt_ener() */
- Word16 exp_code_en, /* i : innovation energy (exponent), Q0 */
- Word16 frac_code_en, /* i : innovation energy (fraction), Q15 */
- Word16 exp_gcode0, /* i : predicted CB gain (exponent), Q0 */
- Word16 frac_gcode0, /* i : predicted CB gain (fraction), Q15 */
- Word16 L_subfr, /* i : Subframe length */
- Word16 cod_gain_frac, /* i : opt. codebook gain (fraction),Q15 */
- Word16 cod_gain_exp, /* i : opt. codebook gain (exponent), Q0 */
- Word16 gp_limit, /* i : pitch gain limit */
- Word16 *gain_pit, /* i/o: Pitch gain (unquant/quant), 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) */
- Word16 **anap /* o : Index of quantization */
- /* (first gain pitch, then code pitch)*/
- );
- #endif
|
