mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/*
|
|
* RAW Dirac demuxer
|
|
* Copyright (c) 2007 Marco Gerards <marco@gnu.org>
|
|
*
|
|
* 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 dirac_probe(const AVProbeData *p)
|
|
{
|
|
unsigned size;
|
|
if (AV_RL32(p->buf) != MKTAG('B', 'B', 'C', 'D'))
|
|
return 0;
|
|
|
|
size = AV_RB32(p->buf+5);
|
|
if (size < 13)
|
|
return 0;
|
|
if (size + 13LL > p->buf_size)
|
|
return AVPROBE_SCORE_MAX / 4;
|
|
if (AV_RL32(p->buf + size) != MKTAG('B', 'B', 'C', 'D'))
|
|
return 0;
|
|
|
|
return AVPROBE_SCORE_MAX;
|
|
}
|
|
|
|
FF_DEF_RAWVIDEO_DEMUXER(dirac, "raw Dirac", dirac_probe, NULL, AV_CODEC_ID_DIRAC)
|