1cabdff1aSopenharmony_ci/*
2cabdff1aSopenharmony_ci * RAW Dirac demuxer
3cabdff1aSopenharmony_ci * Copyright (c) 2007 Marco Gerards <marco@gnu.org>
4cabdff1aSopenharmony_ci *
5cabdff1aSopenharmony_ci * This file is part of FFmpeg.
6cabdff1aSopenharmony_ci *
7cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or
8cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public
9cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either
10cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version.
11cabdff1aSopenharmony_ci *
12cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful,
13cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of
14cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15cabdff1aSopenharmony_ci * Lesser General Public License for more details.
16cabdff1aSopenharmony_ci *
17cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public
18cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software
19cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20cabdff1aSopenharmony_ci */
21cabdff1aSopenharmony_ci
22cabdff1aSopenharmony_ci#include "libavutil/intreadwrite.h"
23cabdff1aSopenharmony_ci#include "avformat.h"
24cabdff1aSopenharmony_ci#include "rawdec.h"
25cabdff1aSopenharmony_ci
26cabdff1aSopenharmony_cistatic int dirac_probe(const AVProbeData *p)
27cabdff1aSopenharmony_ci{
28cabdff1aSopenharmony_ci    unsigned size;
29cabdff1aSopenharmony_ci    if (AV_RL32(p->buf) != MKTAG('B', 'B', 'C', 'D'))
30cabdff1aSopenharmony_ci        return 0;
31cabdff1aSopenharmony_ci
32cabdff1aSopenharmony_ci    size = AV_RB32(p->buf+5);
33cabdff1aSopenharmony_ci    if (size < 13)
34cabdff1aSopenharmony_ci        return 0;
35cabdff1aSopenharmony_ci    if (size + 13LL > p->buf_size)
36cabdff1aSopenharmony_ci        return AVPROBE_SCORE_MAX / 4;
37cabdff1aSopenharmony_ci    if (AV_RL32(p->buf + size) != MKTAG('B', 'B', 'C', 'D'))
38cabdff1aSopenharmony_ci        return 0;
39cabdff1aSopenharmony_ci
40cabdff1aSopenharmony_ci    return AVPROBE_SCORE_MAX;
41cabdff1aSopenharmony_ci}
42cabdff1aSopenharmony_ci
43cabdff1aSopenharmony_ciFF_DEF_RAWVIDEO_DEMUXER(dirac, "raw Dirac", dirac_probe, NULL, AV_CODEC_ID_DIRAC)
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