Chris@69: /***********************************************************************
Chris@69: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Chris@69: Redistribution and use in source and binary forms, with or without
Chris@69: modification, are permitted provided that the following conditions
Chris@69: are met:
Chris@69: - Redistributions of source code must retain the above copyright notice,
Chris@69: this list of conditions and the following disclaimer.
Chris@69: - Redistributions in binary form must reproduce the above copyright
Chris@69: notice, this list of conditions and the following disclaimer in the
Chris@69: documentation and/or other materials provided with the distribution.
Chris@69: - Neither the name of Internet Society, IETF or IETF Trust, nor the
Chris@69: names of specific contributors, may be used to endorse or promote
Chris@69: products derived from this software without specific prior written
Chris@69: permission.
Chris@69: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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Chris@69: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Chris@69: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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Chris@69: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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Chris@69: POSSIBILITY OF SUCH DAMAGE.
Chris@69: ***********************************************************************/
Chris@69: 
Chris@69: #ifndef SILK_PLC_H
Chris@69: #define SILK_PLC_H
Chris@69: 
Chris@69: #include "main.h"
Chris@69: 
Chris@69: #define BWE_COEF                        0.99
Chris@69: #define V_PITCH_GAIN_START_MIN_Q14      11469               /* 0.7 in Q14               */
Chris@69: #define V_PITCH_GAIN_START_MAX_Q14      15565               /* 0.95 in Q14              */
Chris@69: #define MAX_PITCH_LAG_MS                18
Chris@69: #define RAND_BUF_SIZE                   128
Chris@69: #define RAND_BUF_MASK                   ( RAND_BUF_SIZE - 1 )
Chris@69: #define LOG2_INV_LPC_GAIN_HIGH_THRES    3                   /* 2^3 = 8 dB LPC gain      */
Chris@69: #define LOG2_INV_LPC_GAIN_LOW_THRES     8                   /* 2^8 = 24 dB LPC gain     */
Chris@69: #define PITCH_DRIFT_FAC_Q16             655                 /* 0.01 in Q16              */
Chris@69: 
Chris@69: void silk_PLC_Reset(
Chris@69:     silk_decoder_state                  *psDec              /* I/O Decoder state        */
Chris@69: );
Chris@69: 
Chris@69: void silk_PLC(
Chris@69:     silk_decoder_state                  *psDec,             /* I/O Decoder state        */
Chris@69:     silk_decoder_control                *psDecCtrl,         /* I/O Decoder control      */
Chris@69:     opus_int16                          frame[],            /* I/O  signal              */
Chris@69:     opus_int                            lost,               /* I Loss flag              */
Chris@69:     int                                 arch                /* I Run-time architecture  */
Chris@69: );
Chris@69: 
Chris@69: void silk_PLC_glue_frames(
Chris@69:     silk_decoder_state                  *psDec,             /* I/O decoder state        */
Chris@69:     opus_int16                          frame[],            /* I/O signal               */
Chris@69:     opus_int                            length              /* I length of signal       */
Chris@69: );
Chris@69: 
Chris@69: #endif
Chris@69: