mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-23 19:49:56 +00:00
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/*
|
|
* 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"
|
|
#include "libavcodec/dnxhddata.h"
|
|
|
|
static int dnxhd_probe(const AVProbeData *p)
|
|
{
|
|
int w, h, compression_id;
|
|
if (p->buf_size < 0x2c)
|
|
return 0;
|
|
if (ff_dnxhd_parse_header_prefix(p->buf) == 0)
|
|
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 < 1235 || compression_id > 1260) &&
|
|
(compression_id < 1270 || compression_id > 1274))
|
|
return 0;
|
|
return AVPROBE_SCORE_MAX;
|
|
}
|
|
|
|
FF_DEF_RAWVIDEO_DEMUXER(dnxhd, "raw DNxHD (SMPTE VC-3)", dnxhd_probe, NULL, AV_CODEC_ID_DNXHD)
|