gain_quant.c | Explore in Territory

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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "main.h"

#define OFFSET …
#define SCALE_Q16 …
#define INV_SCALE_Q16 …

/* Gain scalar quantization with hysteresis, uniform on log scale */
void silk_gains_quant(
    opus_int8                   ind[ MAX_NB_SUBFR ],            /* O    gain indices                                */
    opus_int32                  gain_Q16[ MAX_NB_SUBFR ],       /* I/O  gains (quantized out)                       */
    opus_int8                   *prev_ind,                      /* I/O  last index in previous frame                */
    const opus_int              conditional,                    /* I    first gain is delta coded if 1              */
    const opus_int              nb_subfr                        /* I    number of subframes                         */
)
{ … }

/* Gains scalar dequantization, uniform on log scale */
void silk_gains_dequant(
    opus_int32                  gain_Q16[ MAX_NB_SUBFR ],       /* O    quantized gains                             */
    const opus_int8             ind[ MAX_NB_SUBFR ],            /* I    gain indices                                */
    opus_int8                   *prev_ind,                      /* I/O  last index in previous frame                */
    const opus_int              conditional,                    /* I    first gain is delta coded if 1              */
    const opus_int              nb_subfr                        /* I    number of subframes                          */
)
{ … }

/* Compute unique identifier of gain indices vector */
opus_int32 silk_gains_ID(                                       /* O    returns unique identifier of gains          */
    const opus_int8             ind[ MAX_NB_SUBFR ],            /* I    gain indices                                */
    const opus_int              nb_subfr                        /* I    number of subframes                         */
)
{ … }
chromium/third_party/opus/src/silk/gain_quant.c
