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added support for DVHS (192) packet size

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Originally committed as revision 4801 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Nico Sabbi 2006-01-02 20:13:24 +00:00
parent f007d35865
commit 5d4d67e0ff
2 changed files with 12 additions and 7 deletions
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18
libavformat/mpegts.c
View File

@ -246,17 +246,19 @@ static int analyze(const uint8_t *buf, int size, int packet_size, int *index){
/* autodetect fec presence. Must have at least 1024 bytes */
static int get_packet_size(const uint8_t *buf, int size)
{
int score, fec_score;
int score, fec_score, dvhs_score;
if (size < (TS_FEC_PACKET_SIZE * 5 + 1))
return -1;
score = analyze(buf, size, TS_PACKET_SIZE, NULL);
dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL);
fec_score= analyze(buf, size, TS_FEC_PACKET_SIZE, NULL);
// av_log(NULL, AV_LOG_DEBUG, "score: %d, fec_score: %d \n", score, fec_score);
// av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
if (score > fec_score) return TS_PACKET_SIZE;
else if(score < fec_score) return TS_FEC_PACKET_SIZE;
if (score > fec_score && score > dvhs_score) return TS_PACKET_SIZE;
else if(dvhs_score > score && dvhs_score > fec_score) return TS_DVHS_PACKET_SIZE;
else if(score < fec_score && dvhs_score < fec_score) return TS_FEC_PACKET_SIZE;
else return -1;
}
@ -1094,18 +1096,20 @@ static int mpegts_probe(AVProbeData *p)
{
#if 1
const int size= p->buf_size;
int score, fec_score;
int score, fec_score, dvhs_score;
#define CHECK_COUNT 10
if (size < (TS_FEC_PACKET_SIZE * CHECK_COUNT))
return -1;
score = analyze(p->buf, TS_PACKET_SIZE *CHECK_COUNT, TS_PACKET_SIZE, NULL);
dvhs_score = analyze(p->buf, TS_DVHS_PACKET_SIZE *CHECK_COUNT, TS_DVHS_PACKET_SIZE, NULL);
fec_score= analyze(p->buf, TS_FEC_PACKET_SIZE*CHECK_COUNT, TS_FEC_PACKET_SIZE, NULL);
// av_log(NULL, AV_LOG_DEBUG, "score: %d, fec_score: %d \n", score, fec_score);
// av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
// we need a clear definition for the returned score otherwise things will become messy sooner or later
if (score > fec_score && score > 6) return AVPROBE_SCORE_MAX + score - CHECK_COUNT;
if (score > fec_score && score > dvhs_score && score > 6) return AVPROBE_SCORE_MAX + score - CHECK_COUNT;
else if(dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6) return AVPROBE_SCORE_MAX + dvhs_score - CHECK_COUNT;
else if( fec_score > 6) return AVPROBE_SCORE_MAX + fec_score - CHECK_COUNT;
else return -1;
#else

1
libavformat/mpegts.h
View File

@ -18,6 +18,7 @@
*/
#define TS_FEC_PACKET_SIZE 204
#define TS_DVHS_PACKET_SIZE 192
#define TS_PACKET_SIZE 188
#define NB_PID_MAX 8192
#define MAX_SECTION_SIZE 4096