shithub: opus

ref: 6f06d3436dafe1f697eb86ace9cbfd645f0d2439
dir: /silk/silk_PLC.h/

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/***********************************************************************
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Redistribution and use in source and binary forms, with or without 
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are permitted provided that the following conditions are met:
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this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright 
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documentation and/or other materials provided with the distribution.
- Neither the name of Skype Limited, nor the names of specific 
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this software without specific prior written permission.
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED 
BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
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***********************************************************************/

#ifndef SILK_PLC_FIX_H
#define SILK_PLC_FIX_H

#include "silk_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 SA_THRES_Q8                     50
#define USE_SINGLE_TAP                  1
#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      */
    SKP_int16                   signal[],           /* I/O  signal              */
    SKP_int                     length,             /* I length of residual     */
    SKP_int                     lost                /* I Loss flag              */
);

void silk_PLC_update(
    silk_decoder_state      *psDec,             /* I/O Decoder state        */
    silk_decoder_control    *psDecCtrl,         /* I/O Decoder control      */
    SKP_int16                   signal[],
    SKP_int                     length
);

void silk_PLC_conceal(
    silk_decoder_state      *psDec,             /* I/O Decoder state        */
    silk_decoder_control    *psDecCtrl,         /* I/O Decoder control      */
    SKP_int16                   signal[],           /* O LPC residual signal    */
    SKP_int                     length              /* I length of signal       */
);

void silk_PLC_glue_frames(
    silk_decoder_state      *psDec,             /* I/O decoder state        */
    silk_decoder_control    *psDecCtrl,         /* I/O Decoder control      */
    SKP_int16                   signal[],           /* I/O signal               */
    SKP_int                     length              /* I length of signal       */
);

#endif