1 /*********************************************************************** 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. 3 Redistribution and use in source and binary forms, with or without 4 modification, are permitted provided that the following conditions 5 are met: 6 - Redistributions of source code must retain the above copyright notice, 7 this list of conditions and the following disclaimer. 8 - Redistributions in binary form must reproduce the above copyright 9 notice, this list of conditions and the following disclaimer in the 10 documentation and/or other materials provided with the distribution. 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the 12 names of specific contributors, may be used to endorse or promote 13 products derived from this software without specific prior written 14 permission. 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 POSSIBILITY 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 43 void silk_PLC_Reset( 44 silk_decoder_state *psDec /* I/O Decoder state */ 45 ); 46 47 void 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 ); 53 54 void silk_PLC_glue_frames( 55 silk_decoder_state *psDec, /* I/O decoder state */ 56 opus_int16 frame[], /* I/O signal */ 57 opus_int length /* I length of signal */ 58 ); 59 60 #endif 61 62