cannam@154: /***********************************************************************
cannam@154: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
cannam@154: Redistribution and use in source and binary forms, with or without
cannam@154: modification, are permitted provided that the following conditions
cannam@154: are met:
cannam@154: - Redistributions of source code must retain the above copyright notice,
cannam@154: this list of conditions and the following disclaimer.
cannam@154: - Redistributions in binary form must reproduce the above copyright
cannam@154: notice, this list of conditions and the following disclaimer in the
cannam@154: documentation and/or other materials provided with the distribution.
cannam@154: - Neither the name of Internet Society, IETF or IETF Trust, nor the
cannam@154: names of specific contributors, may be used to endorse or promote
cannam@154: products derived from this software without specific prior written
cannam@154: permission.
cannam@154: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
cannam@154: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
cannam@154: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
cannam@154: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
cannam@154: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
cannam@154: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
cannam@154: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
cannam@154: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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cannam@154: ***********************************************************************/
cannam@154: 
cannam@154: #ifndef SILK_PLC_H
cannam@154: #define SILK_PLC_H
cannam@154: 
cannam@154: #include "main.h"
cannam@154: 
cannam@154: #define BWE_COEF                        0.99
cannam@154: #define V_PITCH_GAIN_START_MIN_Q14      11469               /* 0.7 in Q14               */
cannam@154: #define V_PITCH_GAIN_START_MAX_Q14      15565               /* 0.95 in Q14              */
cannam@154: #define MAX_PITCH_LAG_MS                18
cannam@154: #define RAND_BUF_SIZE                   128
cannam@154: #define RAND_BUF_MASK                   ( RAND_BUF_SIZE - 1 )
cannam@154: #define LOG2_INV_LPC_GAIN_HIGH_THRES    3                   /* 2^3 = 8 dB LPC gain      */
cannam@154: #define LOG2_INV_LPC_GAIN_LOW_THRES     8                   /* 2^8 = 24 dB LPC gain     */
cannam@154: #define PITCH_DRIFT_FAC_Q16             655                 /* 0.01 in Q16              */
cannam@154: 
cannam@154: void silk_PLC_Reset(
cannam@154:     silk_decoder_state                  *psDec              /* I/O Decoder state        */
cannam@154: );
cannam@154: 
cannam@154: void silk_PLC(
cannam@154:     silk_decoder_state                  *psDec,             /* I/O Decoder state        */
cannam@154:     silk_decoder_control                *psDecCtrl,         /* I/O Decoder control      */
cannam@154:     opus_int16                          frame[],            /* I/O  signal              */
cannam@154:     opus_int                            lost,               /* I Loss flag              */
cannam@154:     int                                 arch                /* I Run-time architecture  */
cannam@154: );
cannam@154: 
cannam@154: void silk_PLC_glue_frames(
cannam@154:     silk_decoder_state                  *psDec,             /* I/O decoder state        */
cannam@154:     opus_int16                          frame[],            /* I/O signal               */
cannam@154:     opus_int                            length              /* I length of signal       */
cannam@154: );
cannam@154: 
cannam@154: #endif
cannam@154: