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attempt to detect Chinese AVS video 

Originally committed as revision 5604 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2006-07-03 21:40:01 +00:00
parent ad78c0f3f1
commit 83d0731364
1 changed files with 8 additions and 1 deletions
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9
libavformat/mpeg.c
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@ -1605,8 +1605,15 @@ static int mpegps_read_packet(AVFormatContext *s,
goto skip;
}
} else if (startcode >= 0x1e0 && startcode <= 0x1ef) {
static const unsigned char avs_seqh[4] = { 0, 0, 1, 0xb0 };
unsigned char buf[8];
get_buffer(&s->pb, buf, 8);
url_fseek(&s->pb, -8, SEEK_CUR);
if(!memcmp(buf, avs_seqh, 4) && (buf[6] != 0 || buf[7] != 1))
codec_id = CODEC_ID_CAVS;
else
codec_id = CODEC_ID_MPEG2VIDEO;
type = CODEC_TYPE_VIDEO;
codec_id = CODEC_ID_MPEG2VIDEO;
} else if (startcode >= 0x1c0 && startcode <= 0x1df) {
type = CODEC_TYPE_AUDIO;
codec_id = CODEC_ID_MP2;