mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
8381ab1437
* qatar/master: (29 commits) ARM: disable ff_vector_fmul_vfp on VFPv3 systems ARM: check for VFPv3 swscale: Remove unused variables in x86 code. doc: Drop DJGPP section, Libav now compiles out-of-the-box on FreeDOS. x86: Add appropriate ifdefs around certain AVX functions. cmdutils: use sws_freeContext() instead of av_freep(). swscale: delay allocation of formatConvBuffer(). swscale: fix build with --disable-swscale-alpha. movenc: Deprecate the global RTP hinting flag, use a private AVOption instead movenc: Add an AVClass for setting muxer specific options swscale: fix non-bitexact yuv2yuv[X2]() MMX/MMX2 functions. configure: report yasm/nasm presence properly tcp: make connect() timeout properly rawdec: factor video demuxer definitions into a macro. rtspdec: add initial_pause private option. lavf: deprecate AVFormatParameters.width/height. tty: add video_size private option. rawdec: add video_size private option. x11grab: add video_size private option. x11grab: factorize returning error codes. ... Merged-by: Michael Niedermayer <michaelni@gmx.at>
46 lines
1.6 KiB
C
46 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"
|
|
|
|
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)
|