/*
  * raw FLAC muxer
  * Copyright (C) 2009 Justin Ruggles
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "libavcodec/flac.h"
 #include "libavcodec/bytestream.h"
 #include "avformat.h"
 #include "flacenc.h"
 

 int ff_flac_write_header(AVIOContext *pb, AVCodecContext *codec,

                          int last_block)
 {
     uint8_t header[8] = {
         0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22
     };
     uint8_t *streaminfo;
     enum FLACExtradataFormat format;
 
     header[4] = last_block ? 0x80 : 0x00;
     if (!ff_flac_is_extradata_valid(codec, &format, &streaminfo))
         return -1;
 
     /* write "fLaC" stream marker and first metadata block header if needed */
     if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) {

         avio_write(pb, header, 8);

     }
 
     /* write STREAMINFO or full header */

     avio_write(pb, codec->extradata, codec->extradata_size);

 
     return 0;
 }