repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * RAW DNxHD (SMPTE VC-3) demuxer | |
| 3 | * Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@gmail.com> | |
| 4 | * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> | |
| 5 | * | |
| 6 | * This file is part of FFmpeg. | |
| 7 | * | |
| 8 | * FFmpeg is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU Lesser General Public | |
| 10 | * License as published by the Free Software Foundation; either | |
| 11 | * version 2.1 of the License, or (at your option) any later version. | |
| 12 | * | |
| 13 | * FFmpeg is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 | * Lesser General Public License for more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU Lesser General Public | |
| 19 | * License along with FFmpeg; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 21 | */ | |
| 22 | ||
| 23 | #include "libavutil/intreadwrite.h" | |
| 24 | #include "avformat.h" | |
| 25 | #include "rawdec.h" | |
| 26 | ||
| 27 | static int dnxhd_probe(AVProbeData *p) | |
| 28 | { | |
| 29 | static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01}; | |
| 30 | int w, h, compression_id; | |
| 31 | if (p->buf_size < 0x2c) | |
| 32 | return 0; | |
| 33 | if (memcmp(p->buf, header, 5)) | |
| 34 | return 0; | |
| 35 | h = AV_RB16(p->buf + 0x18); | |
| 36 | w = AV_RB16(p->buf + 0x1a); | |
| 37 | if (!w || !h) | |
| 38 | return 0; | |
| 39 | compression_id = AV_RB32(p->buf + 0x28); | |
| 40 | if (compression_id < 1235 || compression_id > 1253) | |
| 41 | return 0; | |
| 42 | return AVPROBE_SCORE_MAX; | |
| 43 | } | |
| 44 | ||
| 45 | FF_DEF_RAWVIDEO_DEMUXER(dnxhd, "raw DNxHD (SMPTE VC-3)", dnxhd_probe, NULL, AV_CODEC_ID_DNXHD) |