| cannam@154 | 1 /*********************************************************************** | 
| cannam@154 | 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. | 
| cannam@154 | 3 Redistribution and use in source and binary forms, with or without | 
| cannam@154 | 4 modification, are permitted provided that the following conditions | 
| cannam@154 | 5 are met: | 
| cannam@154 | 6 - Redistributions of source code must retain the above copyright notice, | 
| cannam@154 | 7 this list of conditions and the following disclaimer. | 
| cannam@154 | 8 - Redistributions in binary form must reproduce the above copyright | 
| cannam@154 | 9 notice, this list of conditions and the following disclaimer in the | 
| cannam@154 | 10 documentation and/or other materials provided with the distribution. | 
| cannam@154 | 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the | 
| cannam@154 | 12 names of specific contributors, may be used to endorse or promote | 
| cannam@154 | 13 products derived from this software without specific prior written | 
| cannam@154 | 14 permission. | 
| cannam@154 | 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | 
| cannam@154 | 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 
| cannam@154 | 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | 
| cannam@154 | 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | 
| cannam@154 | 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 
| cannam@154 | 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 
| cannam@154 | 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 
| cannam@154 | 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 
| cannam@154 | 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 
| cannam@154 | 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 
| cannam@154 | 25 POSSIBILITY OF SUCH DAMAGE. | 
| cannam@154 | 26 ***********************************************************************/ | 
| cannam@154 | 27 | 
| cannam@154 | 28 #ifndef SILK_PLC_H | 
| cannam@154 | 29 #define SILK_PLC_H | 
| cannam@154 | 30 | 
| cannam@154 | 31 #include "main.h" | 
| cannam@154 | 32 | 
| cannam@154 | 33 #define BWE_COEF                        0.99 | 
| cannam@154 | 34 #define V_PITCH_GAIN_START_MIN_Q14      11469               /* 0.7 in Q14               */ | 
| cannam@154 | 35 #define V_PITCH_GAIN_START_MAX_Q14      15565               /* 0.95 in Q14              */ | 
| cannam@154 | 36 #define MAX_PITCH_LAG_MS                18 | 
| cannam@154 | 37 #define RAND_BUF_SIZE                   128 | 
| cannam@154 | 38 #define RAND_BUF_MASK                   ( RAND_BUF_SIZE - 1 ) | 
| cannam@154 | 39 #define LOG2_INV_LPC_GAIN_HIGH_THRES    3                   /* 2^3 = 8 dB LPC gain      */ | 
| cannam@154 | 40 #define LOG2_INV_LPC_GAIN_LOW_THRES     8                   /* 2^8 = 24 dB LPC gain     */ | 
| cannam@154 | 41 #define PITCH_DRIFT_FAC_Q16             655                 /* 0.01 in Q16              */ | 
| cannam@154 | 42 | 
| cannam@154 | 43 void silk_PLC_Reset( | 
| cannam@154 | 44     silk_decoder_state                  *psDec              /* I/O Decoder state        */ | 
| cannam@154 | 45 ); | 
| cannam@154 | 46 | 
| cannam@154 | 47 void silk_PLC( | 
| cannam@154 | 48     silk_decoder_state                  *psDec,             /* I/O Decoder state        */ | 
| cannam@154 | 49     silk_decoder_control                *psDecCtrl,         /* I/O Decoder control      */ | 
| cannam@154 | 50     opus_int16                          frame[],            /* I/O  signal              */ | 
| cannam@154 | 51     opus_int                            lost,               /* I Loss flag              */ | 
| cannam@154 | 52     int                                 arch                /* I Run-time architecture  */ | 
| cannam@154 | 53 ); | 
| cannam@154 | 54 | 
| cannam@154 | 55 void silk_PLC_glue_frames( | 
| cannam@154 | 56     silk_decoder_state                  *psDec,             /* I/O decoder state        */ | 
| cannam@154 | 57     opus_int16                          frame[],            /* I/O signal               */ | 
| cannam@154 | 58     opus_int                            length              /* I length of signal       */ | 
| cannam@154 | 59 ); | 
| cannam@154 | 60 | 
| cannam@154 | 61 #endif | 
| cannam@154 | 62 |