1/*********************************************************************** 2Copyright (c) 2006-2011, Skype Limited. All rights reserved. 3Redistribution and use in source and binary forms, with or without 4modification, are permitted provided that the following conditions 5are met: 6- Redistributions of source code must retain the above copyright notice, 7this list of conditions and the following disclaimer. 8- Redistributions in binary form must reproduce the above copyright 9notice, this list of conditions and the following disclaimer in the 10documentation and/or other materials provided with the distribution. 11- Neither the name of Internet Society, IETF or IETF Trust, nor the 12names of specific contributors, may be used to endorse or promote 13products derived from this software without specific prior written 14permission. 15THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25POSSIBILITY OF SUCH DAMAGE. 26***********************************************************************/ 27 28#ifndef SILK_PLC_H 29#define SILK_PLC_H 30 31#include "main.h" 32 33#define BWE_COEF 0.99 34#define V_PITCH_GAIN_START_MIN_Q14 11469 /* 0.7 in Q14 */ 35#define V_PITCH_GAIN_START_MAX_Q14 15565 /* 0.95 in Q14 */ 36#define MAX_PITCH_LAG_MS 18 37#define RAND_BUF_SIZE 128 38#define RAND_BUF_MASK ( RAND_BUF_SIZE - 1 ) 39#define LOG2_INV_LPC_GAIN_HIGH_THRES 3 /* 2^3 = 8 dB LPC gain */ 40#define LOG2_INV_LPC_GAIN_LOW_THRES 8 /* 2^8 = 24 dB LPC gain */ 41#define PITCH_DRIFT_FAC_Q16 655 /* 0.01 in Q16 */ 42 43void silk_PLC_Reset( 44 silk_decoder_state *psDec /* I/O Decoder state */ 45); 46 47void silk_PLC( 48 silk_decoder_state *psDec, /* I/O Decoder state */ 49 silk_decoder_control *psDecCtrl, /* I/O Decoder control */ 50 opus_int16 frame[], /* I/O signal */ 51 opus_int lost, /* I Loss flag */ 52 int arch /* I Run-time architecture */ 53); 54 55void silk_PLC_glue_frames( 56 silk_decoder_state *psDec, /* I/O decoder state */ 57 opus_int16 frame[], /* I/O signal */ 58 opus_int length /* I length of signal */ 59); 60 61#endif 62 63