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Member "mumble-1.3.2/3rdparty/opus-src/silk/API.h" (9 Jul 2020, 7175 Bytes) of package /linux/misc/mumble-1.3.2.tar.gz:


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    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