repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * RAW Dirac demuxer | |
| 3 | * Copyright (c) 2007 Marco Gerards <marco@gnu.org> | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #include "libavutil/intreadwrite.h" | |
| 23 | #include "avformat.h" | |
| 24 | #include "rawdec.h" | |
| 25 | ||
| 26 | static int dirac_probe(AVProbeData *p) | |
| 27 | { | |
| 28 | unsigned size; | |
| 29 | if (AV_RL32(p->buf) != MKTAG('B', 'B', 'C', 'D')) | |
| 30 | return 0; | |
| 31 | ||
| 32 | size = AV_RB32(p->buf+5); | |
| 33 | if (size < 13) | |
| 34 | return 0; | |
| 35 | if (size + 13LL > p->buf_size) | |
| 36 | return AVPROBE_SCORE_MAX / 4; | |
| 37 | if (AV_RL32(p->buf + size) != MKTAG('B', 'B', 'C', 'D')) | |
| 38 | return 0; | |
| 39 | ||
| 40 | return AVPROBE_SCORE_MAX; | |
| 41 | } | |
| 42 | ||
| 43 | FF_DEF_RAWVIDEO_DEMUXER(dirac, "raw Dirac", dirac_probe, NULL, AV_CODEC_ID_DIRAC) |