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can't have PES headers in MPEG video elementary streams so fail probe

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if we see one

Originally committed as revision 5089 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2006-03-01 20:09:44 +00:00
parent 8945ebb9c1
commit e01dc227f3
1 changed files with 6 additions and 2 deletions
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8
libavformat/raw.c
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@ -305,11 +305,13 @@ static int video_read_header(AVFormatContext *s,
#define PICTURE_START_CODE 0x00000100 #define PICTURE_START_CODE 0x00000100
#define SLICE_START_CODE 0x00000101 #define SLICE_START_CODE 0x00000101
#define PACK_START_CODE 0x000001ba #define PACK_START_CODE 0x000001ba
#define VIDEO_ID 0x000001e0
#define AUDIO_ID 0x000001c0
static int mpegvideo_probe(AVProbeData *p) static int mpegvideo_probe(AVProbeData *p)
{ {
uint32_t code= -1; uint32_t code= -1;
int pic=0, seq=0, slice=0, pspack=0; int pic=0, seq=0, slice=0, pspack=0, pes=0;
int i; int i;
for(i=0; i<p->buf_size; i++){ for(i=0; i<p->buf_size; i++){
@ -320,10 +322,12 @@ static int mpegvideo_probe(AVProbeData *p)
case PICTURE_START_CODE: pic++; break; case PICTURE_START_CODE: pic++; break;
case SLICE_START_CODE: slice++; break; case SLICE_START_CODE: slice++; break;
case PACK_START_CODE: pspack++; break; case PACK_START_CODE: pspack++; break;
case VIDEO_ID:
case AUDIO_ID: pes++; break;
} }
} }
} }
if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack) if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
return 0; return 0;
} }