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add support for information in CDXA format

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patch by Allan Sandfeld Jensen % kde A carewolf P com %
Original thread:
Date: Aug 18, 2006 6:33 PM
Subject: [Ffmpeg-devel] CDXA in libavformat [patch]

Originally committed as revision 6124 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Allan Sandfeld Jensen 2006-08-29 12:03:07 +00:00 committed by Guillaume Poirier
parent 9dc5607b3c
commit c5e331155c
1 changed files with 18 additions and 0 deletions
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18
libavformat/mpeg.c
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@ -1260,6 +1260,20 @@ static int mpeg_mux_end(AVFormatContext *ctx)
#define MAX_SYNC_SIZE 100000
static int cdxa_probe(AVProbeData *p)
{
/* check file header */
if (p->buf_size <= 32)
return 0;
if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
p->buf[2] == 'F' && p->buf[3] == 'F' &&
p->buf[8] == 'C' && p->buf[9] == 'D' &&
p->buf[10] == 'X' && p->buf[11] == 'A')
return AVPROBE_SCORE_MAX;
else
return 0;
}
static int mpegps_probe(AVProbeData *p)
{
uint32_t code= -1;
@ -1267,6 +1281,10 @@ static int mpegps_probe(AVProbeData *p)
int i;
int score=0;
score = cdxa_probe(p);
if (score > 0) return score;
/* Search for MPEG stream */
for(i=0; i<p->buf_size; i++){
code = (code<<8) + p->buf[i];
if ((code & 0xffffff00) == 0x100) {