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extract video framerate from PSI descriptiors

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This commit is contained in:
Andreas Öman 2008-02-10 13:55:29 +00:00
parent 26cee09253
commit dbf7b7228e
4 changed files with 15 additions and 5 deletions
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1
dvb_support.h
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@ -26,6 +26,7 @@
#ifndef DVB_SUPPORT_H
#define DVB_SUPPORT_H
#define DVB_DESC_VIDEO_STREAM 0x02
#define DVB_DESC_CA 0x09
#define DVB_DESC_LANGUAGE 0x0a

2
parsers.c
View file

@ -409,7 +409,7 @@ parse_pes_header(th_transport_t *t, th_stream_t *st, uint8_t *buf, size_t len)
/**
* MPEG2VIDEO frame duration table (in 90kHz clock domain)
*/
const static unsigned int mpeg2video_framedurations[16] = {
const unsigned int mpeg2video_framedurations[16] = {
0,
3753,
3750,

2
parsers.h
View file

@ -29,4 +29,6 @@ void parse_compute_pts(th_transport_t *t, th_stream_t *st, th_pkt_t *pkt);
void parser_enqueue_packet(th_transport_t *t, th_stream_t *st, th_pkt_t *pkt);
extern const unsigned int mpeg2video_framedurations[16];
#endif /* PARSERS_H */

15
psi.c
View file

@ -30,6 +30,7 @@
#include "dvb_support.h"
#include "tsdemux.h"
#include "strtab.h"
#include "parsers.h"
int
psi_section_reassemble(psi_section_t *ps, uint8_t *data, int len,
@ -177,7 +178,7 @@ psi_parse_pmt(th_transport_t *t, uint8_t *ptr, int len, int chksvcid)
tv_streamtype_t hts_stream_type;
th_stream_t *st;
char lang[4];
int frameduration;
if(len < 9)
return -1;
@ -222,7 +223,7 @@ psi_parse_pmt(th_transport_t *t, uint8_t *ptr, int len, int chksvcid)
ptr += 5;
len -= 5;
frameduration = 0;
hts_stream_type = 0;
switch(estype) {
@ -253,6 +254,10 @@ psi_parse_pmt(th_transport_t *t, uint8_t *ptr, int len, int chksvcid)
break;
switch(dtag) {
case DVB_DESC_VIDEO_STREAM:
frameduration = mpeg2video_framedurations[(ptr[0] >> 3) & 0xf];
break;
case DVB_DESC_LANGUAGE:
memcpy(lang, ptr, 3);
break;
@ -276,10 +281,12 @@ psi_parse_pmt(th_transport_t *t, uint8_t *ptr, int len, int chksvcid)
if(hts_stream_type != 0) {
st = transport_add_stream(t, pid, hts_stream_type);
st->st_tb = (AVRational){1, 90000};
memcpy(st->st_lang, lang, 4);
if(st->st_frame_duration == 0)
st->st_frame_duration = frameduration;
}
}
}
t->tht_pmt_seen = 1;
return 0;