40 #define MAX_RESYNC_SIZE 65536
42 #define MAX_PES_PAYLOAD 200*1024
44 #define MAX_MP4_DESCR_COUNT 16
85 #define MAX_PIDS_PER_PROGRAM 64
154 #define PES_START_SIZE 6
155 #define PES_HEADER_SIZE 9
156 #define MAX_PES_HEADER_SIZE (9 + 255)
186 for(i=0; i<ts->
nb_prg; i++)
187 if(ts->
prg[i].
id == programid)
214 for(i=0; i<ts->
nb_prg; i++) {
215 if(ts->
prg[i].
id == programid) {
239 int used = 0, discarded = 0;
241 for(i=0; i<ts->
nb_prg; i++) {
244 if(p->
pids[j] != pid)
258 return !used && discarded;
266 const uint8_t *buf,
int buf_size,
int is_start)
385 memset(stat, 0, packet_size*
sizeof(
int));
387 for(x=i=0; i<size-3; i++){
388 if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && (buf[i+3] & 0x30)){
390 if(stat[x] > best_score){
397 if(x == packet_size) x= 0;
406 int score, fec_score, dvhs_score;
414 av_dlog(
NULL,
"score: %d, dvhs_score: %d, fec_score: %d \n",
415 score, dvhs_score, fec_score);
417 if (score > fec_score && score > dvhs_score)
return TS_PACKET_SIZE;
450 if ((p + 1) >= p_end)
466 len =
get8(&p, p_end);
469 if ((p + len) > p_end)
486 val =
get8(pp, p_end);
491 val =
get16(pp, p_end);
495 val =
get8(pp, p_end);
498 h->
version = (val >> 1) & 0x1f;
499 val =
get8(pp, p_end);
503 val =
get8(pp, p_end);
571 uint32_t stream_type,
const StreamType *types)
583 uint32_t stream_type, uint32_t prog_reg_desc)
594 "stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
600 if (prog_reg_desc ==
AV_RL32(
"HDMV") &&
611 memcpy(sub_pes, pes,
sizeof(*sub_pes));
619 sub_st->
id = pes->
pid;
671 int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
672 int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
673 int dts_flag = -1, cts_flag = -1;
682 au_start_flag = au_end_flag = 1;
692 if (!idle_flag && (!padding_flag || padding_bits != 0)) {
718 if (inst_bitrate_flag)
735 const uint8_t *buf,
int buf_size,
int is_start,
756 while (buf_size > 0) {
772 code = pes->
header[3] | 0x100;
800 if (code != 0x1bc && code != 0x1bf &&
801 code != 0x1f0 && code != 0x1f1 &&
802 code != 0x1ff && code != 0x1f2 &&
852 unsigned int flags, pes_ext, skip;
858 if ((flags & 0xc0) == 0x80) {
861 }
else if ((flags & 0xc0) == 0xc0) {
871 skip = (pes_ext >> 4) & 0xb;
874 if ((pes_ext & 0x41) == 0x01 &&
877 if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
888 p += sl_header_bytes;
889 buf_size -= sl_header_bytes;
894 if (buf_size > 0 && pes->
buffer) {
990 (*len) -= new_off - *
off;
1025 if (!(id_flags & 0x0020)) {
1102 if (len < 0 || len1 > len || len1 <= 0) {
1103 av_log(d->
s,
AV_LOG_ERROR,
"Tag %x length violation new length %d bytes remaining %d\n", tag, len1, len);
1112 if (target_tag && tag != target_tag) {
1142 Mp4Descr *descr,
int *descr_count,
int max_descr_count)
1155 Mp4Descr *descr,
int *descr_count,
int max_descr_count)
1174 int mp4_descr_count = 0;
1178 p_end = section + section_len - 4;
1190 for (i = 0; i < mp4_descr_count; i++) {
1205 pes->
sl = mp4_descr[i].
sl;
1227 for (i = 0; i < mp4_descr_count; i++)
1228 av_free(mp4_descr[i].dec_config_descr);
1233 Mp4Descr *mp4_descr,
int mp4_descr_count,
int pid,
1237 int desc_len, desc_tag, desc_es_id;
1241 desc_tag =
get8(pp, desc_list_end);
1244 desc_len =
get8(pp, desc_list_end);
1247 desc_end = *pp + desc_len;
1248 if (desc_end > desc_list_end)
1251 av_dlog(fc,
"tag: 0x%02x len=%d\n", desc_tag, desc_len);
1259 desc_es_id =
get16(pp, desc_end);
1260 if (ts && ts->
pids[pid])
1262 for (i = 0; i < mp4_descr_count; i++)
1263 if (mp4_descr[i].dec_config_descr_len &&
1264 mp4_descr[i].es_id == desc_es_id) {
1277 get16(pp, desc_end);
1290 language[0] =
get8(pp, desc_end);
1291 language[1] =
get8(pp, desc_end);
1292 language[2] =
get8(pp, desc_end);
1297 language[0] =
get8(pp, desc_end);
1298 language[1] =
get8(pp, desc_end);
1299 language[2] =
get8(pp, desc_end);
1302 switch(
get8(pp, desc_end)) {
1326 for (i = 0; i + 4 <= desc_len; i += 4) {
1327 language[i + 0] =
get8(pp, desc_end);
1328 language[i + 1] =
get8(pp, desc_end);
1329 language[i + 2] =
get8(pp, desc_end);
1330 language[i + 3] =
',';
1331 switch (
get8(pp, desc_end)) {
1338 language[i - 1] = 0;
1361 const uint8_t *p, *p_end, *desc_list_end;
1362 int program_info_length, pcr_pid, pid, stream_type;
1364 uint32_t prog_reg_desc = 0;
1367 int mp4_descr_count = 0;
1373 p_end = section + section_len - 4;
1385 pcr_pid =
get16(&p, p_end);
1393 program_info_length =
get16(&p, p_end);
1394 if (program_info_length < 0)
1396 program_info_length &= 0xfff;
1397 while(program_info_length >= 2) {
1399 tag =
get8(&p, p_end);
1400 len =
get8(&p, p_end);
1402 av_dlog(ts->
stream,
"program tag: 0x%02x len=%d\n", tag, len);
1404 if(len > program_info_length - 2)
1407 program_info_length -= len + 2;
1414 }
else if (tag == 0x05 && len >= 4) {
1415 prog_reg_desc = bytestream_get_le32(&p);
1420 p += program_info_length;
1431 stream_type =
get8(&p, p_end);
1432 if (stream_type < 0)
1434 pid =
get16(&p, p_end);
1447 }
else if (stream_type != 0x13) {
1475 desc_list_len =
get16(&p, p_end);
1476 if (desc_list_len < 0)
1478 desc_list_len &= 0xfff;
1479 desc_list_end = p + desc_list_len;
1480 if (desc_list_end > p_end)
1484 mp4_descr, mp4_descr_count, pid, ts) < 0)
1487 if (pes && prog_reg_desc ==
AV_RL32(
"HDMV") && stream_type == 0x83 && pes->
sub_st) {
1496 for (i = 0; i < mp4_descr_count; i++)
1497 av_free(mp4_descr[i].dec_config_descr);
1510 p_end = section + section_len - 4;
1519 sid =
get16(&p, p_end);
1522 pmt_pid =
get16(&p, p_end);
1529 if (sid == 0x0000) {
1533 if (ts->
pids[pmt_pid])
1547 const uint8_t *p, *p_end, *desc_list_end, *desc_end;
1548 int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
1549 char *
name, *provider_name;
1554 p_end = section + section_len - 4;
1560 onid =
get16(&p, p_end);
1563 val =
get8(&p, p_end);
1567 sid =
get16(&p, p_end);
1570 val =
get8(&p, p_end);
1573 desc_list_len =
get16(&p, p_end);
1574 if (desc_list_len < 0)
1576 desc_list_len &= 0xfff;
1577 desc_list_end = p + desc_list_len;
1578 if (desc_list_end > p_end)
1581 desc_tag =
get8(&p, desc_list_end);
1584 desc_len =
get8(&p, desc_list_end);
1585 desc_end = p + desc_len;
1586 if (desc_end > desc_list_end)
1590 desc_tag, desc_len);
1594 service_type =
get8(&p, p_end);
1595 if (service_type < 0)
1597 provider_name =
getstr8(&p, p_end);
1625 int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
1626 has_adaptation, has_payload;
1630 pid =
AV_RB16(packet + 1) & 0x1fff;
1633 is_start = packet[1] & 0x40;
1634 tss = ts->
pids[pid];
1637 tss = ts->
pids[pid];
1642 afc = (packet[3] >> 4) & 3;
1645 has_adaptation = afc & 2;
1646 has_payload = afc & 1;
1647 is_discontinuity = has_adaptation
1649 && (packet[5] & 0x80);
1652 cc = (packet[3] & 0xf);
1653 expected_cc = has_payload ? (tss->
last_cc + 1) & 0x0f : tss->
last_cc;
1654 cc_ok = pid == 0x1FFF
1657 || expected_cc == cc;
1662 "Continuity check failed for pid %d expected %d got %d\n",
1663 pid, expected_cc, cc);
1673 if (has_adaptation) {
1689 if (p + len > p_end)
1753 if (buf[0] != 0x47) {
1774 int packet_num, ret = 0;
1800 if (nb_packets != 0 && packet_num >= nb_packets)
1816 int score, fec_score, dvhs_score;
1818 #define CHECK_COUNT 10
1826 av_dlog(
NULL,
"score: %d, dvhs_score: %d, fec_score: %d \n",
1827 score, dvhs_score, fec_score);
1831 else if(dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6)
return AVPROBE_SCORE_MAX + dvhs_score - CHECK_COUNT;
1845 afc = (packet[3] >> 4) & 3;
1855 if (!(flags & 0x10))
1860 *ppcr_high = ((int64_t)v << 1) | (p[4] >> 7);
1861 *ppcr_low = ((p[4] & 1) << 8) | p[5];
1876 if (len !=
sizeof(buf))
1884 if (s->
iformat == &ff_mpegts_demuxer) {
1905 int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
1906 int64_t pcrs[2], pcr_h;
1907 int packet_count[2];
1927 pid =
AV_RB16(packet + 1) & 0x1fff;
1928 if ((pcr_pid == -1 || pcr_pid == pid) &&
1929 parse_pcr(&pcr_h, &pcr_l, packet) == 0) {
1931 packet_count[nb_pcrs] = nb_packets;
1932 pcrs[nb_pcrs] = pcr_h * 300 + pcr_l;
1942 ts->
pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]);
1957 #define MAX_PACKET_READAHEAD ((128 * 1024) / 188)
1964 int64_t pcr_h, next_pcr_h, pos;
1965 int pcr_l, next_pcr_l;
1984 if (
parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
1986 ts->
pcr_incr = ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
1993 ts->
cur_pcr = pcr_h * 300 + pcr_l;
2027 if (!ret && pkt->
size < 0)
2046 int64_t *ppos, int64_t pos_limit)
2049 int64_t pos, timestamp;
2052 const int find_next= 1;
2059 if ((pcr_pid < 0 || (
AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2060 parse_pcr(×tamp, &pcr_l, buf) == 0) {
2073 if ((pcr_pid < 0 || (
AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2074 parse_pcr(×tamp, &pcr_l, buf) == 0) {
2099 if(buf[1] & 0x40)
break;
2139 if (buf[0] != 0x47) {
2174 .
name =
"mpegtsraw",
2183 .priv_class = &mpegtsraw_class,