src/third_party/opus/silk/PLC.h

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#ifndef SILK_PLC_H
#define SILK_PLC_H

#include "main.h"

#define BWE_COEF                        0.99
#define V_PITCH_GAIN_START_MIN_Q14      11469               /* 0.7 in Q14               */
#define V_PITCH_GAIN_START_MAX_Q14      15565               /* 0.95 in Q14              */
#define MAX_PITCH_LAG_MS                18
#define RAND_BUF_SIZE                   128
#define RAND_BUF_MASK                   ( RAND_BUF_SIZE - 1 )
#define LOG2_INV_LPC_GAIN_HIGH_THRES    3                   /* 2^3 = 8 dB LPC gain      */
#define LOG2_INV_LPC_GAIN_LOW_THRES     8                   /* 2^8 = 24 dB LPC gain     */
#define PITCH_DRIFT_FAC_Q16             655                 /* 0.01 in Q16              */

void silk_PLC_Reset(
    silk_decoder_state                  *psDec              /* I/O Decoder state        */
);

void silk_PLC(
    silk_decoder_state                  *psDec,             /* I/O Decoder state        */
    silk_decoder_control                *psDecCtrl,         /* I/O Decoder control      */
    opus_int16                          frame[],            /* I/O  signal              */
    opus_int                            lost,               /* I Loss flag              */
    int                                 arch                /* I Run-time architecture  */
);

void silk_PLC_glue_frames(
    silk_decoder_state                  *psDec,             /* I/O decoder state        */
    opus_int16                          frame[],            /* I/O signal               */
    opus_int                            length              /* I length of signal       */
);

#endif