FFmpeg/libavformat/cdg.c
Michael Niedermayer 78accb876c Merge remote-tracking branch 'qatar/master'
* qatar/master:
  ffmpeg: fix some indentation
  ffmpeg: fix operation with --disable-avfilter
  simple_idct: remove disabled code
  motion_est: remove disabled code
  vc1: remove disabled code
  fate: separate lavf-mxf_d10 test from lavf-mxf
  cabac: Move code only used in the cabac test program to cabac.c.
  ffplay: warn that -pix_fmt is no longer working, suggest alternative
  ffplay: warn that -s is no longer working, suggest alternative
  lavf: rename enc variable in utils.c:has_codec_parameters()
  lavf: use designated initialisers for all (de)muxers.
  wav: remove a use of deprecated AV_METADATA_ macro
  rmdec: remove useless ap parameter from rm_read_header_old()
  dct-test: remove write-only variable
  des: fix #if conditional around P_shuffle
  Use LOCAL_ALIGNED in ff_check_alignment()

Conflicts:
	ffmpeg.c
	libavformat/avidec.c
	libavformat/matroskaenc.c
	libavformat/mp3enc.c
	libavformat/oggenc.c
	libavformat/utils.c
	tests/ref/lavf/mxf

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-07-17 20:12:02 +02:00

65 lines
1.8 KiB
C

/*
* CD Graphics Demuxer
* Copyright (c) 2009 Michael Tison
*
* 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 "avformat.h"
#define CDG_PACKET_SIZE 24
static int read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVStream *vst;
int ret;
vst = av_new_stream(s, 0);
if (!vst)
return AVERROR(ENOMEM);
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codec->codec_id = CODEC_ID_CDGRAPHICS;
/// 75 sectors/sec * 4 packets/sector = 300 packets/sec
av_set_pts_info(vst, 32, 1, 300);
ret = avio_size(s->pb);
if (ret > 0)
vst->duration = (ret * vst->time_base.den) / (CDG_PACKET_SIZE * 300);
return 0;
}
static int read_packet(AVFormatContext *s, AVPacket *pkt)
{
int ret;
ret = av_get_packet(s->pb, pkt, CDG_PACKET_SIZE);
pkt->stream_index = 0;
return ret;
}
AVInputFormat ff_cdg_demuxer = {
.name = "cdg",
.long_name = NULL_IF_CONFIG_SMALL("CD Graphics Format"),
.read_header = read_header,
.read_packet = read_packet,
.extensions = "cdg"
};