FFmpeg/libavformat/iv8.c
Stefano Sabatini 72415b2adb Define AVMediaType enum, and use it instead of enum CodecType, which
is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-30 23:30:55 +00:00

97 lines
2.3 KiB
C

/*
* Copyright (c) 2009 Michael Niedermayer
*
* 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"
static int probe(AVProbeData *p)
{
// the single file i have starts with that, i dont know if others do too
if( p->buf[0] == 1
&& p->buf[1] == 1
&& p->buf[2] == 3
&& p->buf[3] == 0xB8
&& p->buf[4] == 0x80
&& p->buf[5] == 0x60
)
return AVPROBE_SCORE_MAX-2;
return 0;
}
static int read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVStream *st;
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_MPEG4;
st->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(st, 64, 1, 90000);
return 0;
}
static int read_packet(AVFormatContext *s, AVPacket *pkt)
{
int ret, size, pts, type;
retry:
type= get_be16(s->pb); // 257 or 258
size= get_be16(s->pb);
get_be16(s->pb); //some flags, 0x80 indicates end of frame
get_be16(s->pb); //packet number
pts=get_be32(s->pb);
get_be32(s->pb); //6A 13 E3 88
size -= 12;
if(size<1)
return -1;
if(type==258){
url_fskip(s->pb, size);
goto retry;
}
ret= av_get_packet(s->pb, pkt, size);
pkt->pts= pts;
pkt->pos-=16;
pkt->stream_index = 0;
return ret;
}
AVInputFormat iv8_demuxer = {
"iv8",
NULL_IF_CONFIG_SMALL("A format generated by IndigoVision 8000 video server"),
0,
probe,
read_header,
read_packet,
.flags= AVFMT_GENERIC_INDEX,
.value = CODEC_ID_MPEG4,
};