static void pat_cb(void *opaque, const uint8_t *section, int section_len)
{
MpegTSContext *ts = opaque;
SectionHeader h1, *h = &h1;
const uint8_t *p, *p_end;
int sid, pmt_pid;
#ifdef DEBUG_SI
printf("PAT:\n");
av_hex_dump(stdout, (uint8_t *)section, section_len);
#endif
p_end = section + section_len - 4;
p = section;
if (parse_section_header(h, &p, p_end) < 0)
return;
if (h->tid != PAT_TID)
return;
for(;;) {
sid = get16(&p, p_end);
if (sid < 0)
break;
pmt_pid = get16(&p, p_end) & 0x1fff;
if (pmt_pid < 0)
break;
#ifdef DEBUG_SI
printf("sid=0x%x pid=0x%x\n", sid, pmt_pid);
#endif
if (sid == 0x0000) {
/* NIT info */
} else {
if (ts->req_sid == sid) {
ts->pmt_filter = mpegts_open_section_filter(ts, pmt_pid,
pmt_cb, ts, 1);
goto found;
}
}
}
/* not found */
ts->set_service_cb(ts->set_service_opaque, -1);
found:
mpegts_close_filter(ts, ts->pat_filter);
ts->pat_filter = NULL;
}
static void pmt_cb(void *opaque, const uint8_t *section, int section_len)
{
MpegTSContext *ts = opaque;
SectionHeader h1, *h = &h1;
const uint8_t *p, *p_end;
int program_info_length, pcr_pid, pid, stream_type, desc_length;
#ifdef DEBUG_SI
printf("PMT:\n");
av_hex_dump(stdout, (uint8_t *)section, section_len);
#endif
p_end = section + section_len - 4;
p = section;
if (parse_section_header(h, &p, p_end) < 0)
return;
#ifdef DEBUG_SI
printf("sid=0x%x sec_num=%d/%d\n", h->id, h->sec_num, h->last_sec_num);
#endif
if (h->tid != PMT_TID || (ts->req_sid >= 0 && h->id != ts->req_sid) )
return;
pcr_pid = get16(&p, p_end) & 0x1fff;
if (pcr_pid < 0)
return;
ts->pcr_pid = pcr_pid;
#ifdef DEBUG_SI
printf("pcr_pid=0x%x\n", pcr_pid);
#endif
program_info_length = get16(&p, p_end) & 0xfff;
if (program_info_length < 0)
return;
p += program_info_length;
if (p >= p_end)
return;
for(;;) {
stream_type = get8(&p, p_end);
if (stream_type < 0)
break;
pid = get16(&p, p_end) & 0x1fff;
if (pid < 0)
break;
desc_length = get16(&p, p_end) & 0xfff;
if (desc_length < 0)
break;
p += desc_length;
if (p > p_end)
return;
#ifdef DEBUG_SI
printf("stream_type=%d pid=0x%x\n", stream_type, pid);
#endif
/* now create ffmpeg stream */
switch(stream_type) {
case STREAM_TYPE_AUDIO_MPEG1:
case STREAM_TYPE_AUDIO_MPEG2:
case STREAM_TYPE_VIDEO_MPEG1:
case STREAM_TYPE_VIDEO_MPEG2:
case STREAM_TYPE_VIDEO_MPEG4:
case STREAM_TYPE_VIDEO_H264:
case STREAM_TYPE_AUDIO_AAC:
case STREAM_TYPE_AUDIO_AC3:
add_pes_stream(ts, pid, stream_type);
break;
default:
/* we ignore the other streams */
break;
}
}
/* all parameters are there */
ts->set_service_cb(ts->set_service_opaque, 0);
mpegts_close_filter(ts, ts->pmt_filter);
ts->pmt_filter = NULL;
}
static void pmt_cb(void *opaque, const uint8_t *section, int section_len)
{
MpegTSContext *ts = opaque;
SectionHeader h1, *h = &h1;
PESContext *pes;
AVStream *st;
const uint8_t *p, *p_end, *desc_list_end, *desc_end;
int program_info_length, pcr_pid, pid, stream_type;
int desc_list_len, desc_len, desc_tag;
int comp_page = 0, anc_page = 0; /* initialize to kill warnings */
char language[4];
#ifdef DEBUG_SI
printf("PMT:\n");
av_hex_dump(stdout, (uint8_t *)section, section_len);
#endif
p_end = section + section_len - 4;
p = section;
if (parse_section_header(h, &p, p_end) < 0)
return;
#ifdef DEBUG_SI
printf("sid=0x%x sec_num=%d/%d\n", h->id, h->sec_num, h->last_sec_num);
#endif
if (h->tid != PMT_TID || (ts->req_sid >= 0 && h->id != ts->req_sid) )
return;
pcr_pid = get16(&p, p_end) & 0x1fff;
if (pcr_pid < 0)
return;
ts->pcr_pid = pcr_pid;
#ifdef DEBUG_SI
printf("pcr_pid=0x%x\n", pcr_pid);
#endif
program_info_length = get16(&p, p_end) & 0xfff;
if (program_info_length < 0)
return;
p += program_info_length;
if (p >= p_end)
return;
for(;;) {
language[0] = 0;
st = 0;
stream_type = get8(&p, p_end);
if (stream_type < 0)
break;
pid = get16(&p, p_end) & 0x1fff;
if (pid < 0)
break;
desc_list_len = get16(&p, p_end) & 0xfff;
if (desc_list_len < 0)
break;
desc_list_end = p + desc_list_len;
if (desc_list_end > p_end)
break;
for(;;) {
desc_tag = get8(&p, desc_list_end);
if (desc_tag < 0)
break;
if (stream_type == STREAM_TYPE_PRIVATE_DATA) {
if((desc_tag == 0x6A) || (desc_tag == 0x7A)) {
/*assume DVB AC-3 Audio*/
stream_type = STREAM_TYPE_AUDIO_AC3;
} else if(desc_tag == 0x7B) {
/* DVB DTS audio */
stream_type = STREAM_TYPE_AUDIO_DTS;
}
}
desc_len = get8(&p, desc_list_end);
desc_end = p + desc_len;
if (desc_end > desc_list_end)
break;
#ifdef DEBUG_SI
printf("tag: 0x%02x len=%d\n", desc_tag, desc_len);
#endif
switch(desc_tag) {
case DVB_SUBT_DESCID:
if (stream_type == STREAM_TYPE_PRIVATE_DATA)
stream_type = STREAM_TYPE_SUBTITLE_DVB;
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
language[2] = get8(&p, desc_end);
language[3] = 0;
get8(&p, desc_end);
comp_page = get16(&p, desc_end);
anc_page = get16(&p, desc_end);
break;
case 0x0a: /* ISO 639 language descriptor */
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
language[2] = get8(&p, desc_end);
language[3] = 0;
break;
default:
break;
}
p = desc_end;
}
p = desc_list_end;
#ifdef DEBUG_SI
printf("stream_type=%d pid=0x%x\n", stream_type, pid);
#endif
/* now create ffmpeg stream */
switch(stream_type) {
case STREAM_TYPE_AUDIO_MPEG1:
case STREAM_TYPE_AUDIO_MPEG2:
case STREAM_TYPE_VIDEO_MPEG1:
case STREAM_TYPE_VIDEO_MPEG2:
case STREAM_TYPE_VIDEO_MPEG4:
case STREAM_TYPE_VIDEO_H264:
case STREAM_TYPE_AUDIO_AAC:
case STREAM_TYPE_AUDIO_AC3:
case STREAM_TYPE_AUDIO_DTS:
case STREAM_TYPE_SUBTITLE_DVB:
pes = add_pes_stream(ts, pid, stream_type);
if (pes)
st = new_pes_av_stream(pes, 0);
break;
default:
/* we ignore the other streams */
break;
}
if (st) {
if (language[0] != 0) {
st->language[0] = language[0];
st->language[1] = language[1];
st->language[2] = language[2];
st->language[3] = language[3];
}
if (stream_type == STREAM_TYPE_SUBTITLE_DVB) {
st->codec->sub_id = (anc_page << 16) | comp_page;
}
}
}
/* all parameters are there */
ts->set_service_cb(ts->set_service_opaque, 0);
mpegts_close_filter(ts, ts->pmt_filter);
ts->pmt_filter = NULL;
}
