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_API_H 29 #define SILK_API_H 30 31 #include "control.h" 32 #include "typedef.h" 33 #include "errors.h" 34 #include "entenc.h" 35 #include "entdec.h" 36 37 #ifdef __cplusplus 38 extern "C" 39 { 40 #endif 41 42 #define SILK_MAX_FRAMES_PER_PACKET 3 43 44 /* Struct for TOC (Table of Contents) */ 45 typedef struct { 46 opus_int VADFlag; /* Voice activity for packet */ 47 opus_int VADFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* Voice activity for each frame in packet */ 48 opus_int inbandFECFlag; /* Flag indicating if packet contains in-band FEC */ 49 } silk_TOC_struct; 50 51 /****************************************/ 52 /* Encoder functions */ 53 /****************************************/ 54 55 /***********************************************/ 56 /* Get size in bytes of the Silk encoder state */ 57 /***********************************************/ 58 opus_int silk_Get_Encoder_Size( /* O Returns error code */ 59 opus_int *encSizeBytes /* O Number of bytes in SILK encoder state */ 60 ); 61 62 /*************************/ 63 /* Init or reset encoder */ 64 /*************************/ 65 opus_int silk_InitEncoder( /* O Returns error code */ 66 void *encState, /* I/O State */ 67 int arch, /* I Run-time architecture */ 68 silk_EncControlStruct *encStatus /* O Encoder Status */ 69 ); 70 71 /**************************/ 72 /* Encode frame with Silk */ 73 /**************************/ 74 /* Note: if prefillFlag is set, the input must contain 10 ms of audio, irrespective of what */ 75 /* encControl->payloadSize_ms is set to */ 76 opus_int silk_Encode( /* O Returns error code */ 77 void *encState, /* I/O State */ 78 silk_EncControlStruct *encControl, /* I Control status */ 79 const opus_int16 *samplesIn, /* I Speech sample input vector */ 80 opus_int nSamplesIn, /* I Number of samples in input vector */ 81 ec_enc *psRangeEnc, /* I/O Compressor data structure */ 82 opus_int32 *nBytesOut, /* I/O Number of bytes in payload (input: Max bytes) */ 83 const opus_int prefillFlag /* I Flag to indicate prefilling buffers no coding */ 84 ); 85 86 /****************************************/ 87 /* Decoder functions */ 88 /****************************************/ 89 90 /***********************************************/ 91 /* Get size in bytes of the Silk decoder state */ 92 /***********************************************/ 93 opus_int silk_Get_Decoder_Size( /* O Returns error code */ 94 opus_int *decSizeBytes /* O Number of bytes in SILK decoder state */ 95 ); 96 97 /*************************/ 98 /* Init or Reset decoder */ 99 /*************************/ 100 opus_int silk_InitDecoder( /* O Returns error code */ 101 void *decState /* I/O State */ 102 ); 103 104 /******************/ 105 /* Decode a frame */ 106 /******************/ 107 opus_int silk_Decode( /* O Returns error code */ 108 void* decState, /* I/O State */ 109 silk_DecControlStruct* decControl, /* I/O Control Structure */ 110 opus_int lostFlag, /* I 0: no loss, 1 loss, 2 decode fec */ 111 opus_int newPacketFlag, /* I Indicates first decoder call for this packet */ 112 ec_dec *psRangeDec, /* I/O Compressor data structure */ 113 opus_int16 *samplesOut, /* O Decoded output speech vector */ 114 opus_int32 *nSamplesOut, /* O Number of samples decoded */ 115 int arch /* I Run-time architecture */ 116 ); 117 118 #if 0 119 /**************************************/ 120 /* Get table of contents for a packet */ 121 /**************************************/ 122 opus_int silk_get_TOC( 123 const opus_uint8 *payload, /* I Payload data */ 124 const opus_int nBytesIn, /* I Number of input bytes */ 125 const opus_int nFramesPerPayload, /* I Number of SILK frames per payload */ 126 silk_TOC_struct *Silk_TOC /* O Type of content */ 127 ); 128 #endif 129 130 #ifdef __cplusplus 131 } 132 #endif 133 134 #endif 135
