mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.7 KiB
55 lines
1.7 KiB
14 years ago
|
/*
|
||
|
|
* 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 "raw.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;
|
||
|
|
}
|
||
|
|
|
||
|
|
AVInputFormat dnxhd_demuxer = {
|
||
|
|
"dnxhd",
|
||
|
|
NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),
|
||
|
|
0,
|
||
|
|
dnxhd_probe,
|
||
|
|
ff_raw_video_read_header,
|
||
|
|
ff_raw_read_partial_packet,
|
||
|
|
.flags= AVFMT_GENERIC_INDEX,
|
||
|
|
.value = CODEC_ID_DNXHD,
|
||
|
|
};
|