| /* |
| * 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(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) |
