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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 "typedef.h"
- #include "gc_pred.h"
- #include "mode.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
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