| /* |
| * RAW DNxHD (SMPTE VC-3) demuxer |
| * Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@gmail.com> |
| * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> |
| * |
| * 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 dnxhd_probe(AVProbeData *p) |
| { |
| static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01}; |
| int w, h, compression_id; |
| if (p->buf_size < 0x2c) |
| return 0; |
| if (memcmp(p->buf, header, 5)) |
| return 0; |
| h = AV_RB16(p->buf + 0x18); |
| w = AV_RB16(p->buf + 0x1a); |
| if (!w || !h) |
| return 0; |
| compression_id = AV_RB32(p->buf + 0x28); |
| if (compression_id < 1237 || compression_id > 1253) |
| return 0; |
| return AVPROBE_SCORE_MAX; |
| } |
| |
| FF_DEF_RAWVIDEO_DEMUXER(dnxhd, "raw DNxHD (SMPTE VC-3)", dnxhd_probe, NULL, CODEC_ID_DNXHD) |
