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/*
* RAW DNxHD (SMPTE VC-3) demuxer
* Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@gmail.com>
* Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
*
* 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 "libavutil/intreadwrite.h"
#include "avformat.h"
#include "rawdec.h"

static int dnxhd_probe(AVProbeData *p)
{
    static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01};
    int w, h, compression_id;
    if (p->buf_size < 0x2c)
        return 0;
    if (memcmp(p->buf, header, 5))
        return 0;
    h = AV_RB16(p->buf + 0x18);
    w = AV_RB16(p->buf + 0x1a);
    if (!w || !h)
        return 0;
    compression_id = AV_RB32(p->buf + 0x28);
    if (compression_id < 1235 || compression_id > 1253)
        return 0;
    return AVPROBE_SCORE_MAX;
}

FF_DEF_RAWVIDEO_DEMUXER(dnxhd, "raw DNxHD (SMPTE VC-3)", dnxhd_probe, NULL, AV_CODEC_ID_DNXHD)
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