PeerStreamer

/*

 * raw FLAC muxer

 * Copyright (C) 2009 Justin Ruggles

 *

 * This file is part of Libav.

 *

 * Libav 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.

 *

 * Libav 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 Libav; 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;

}