41 #define MAX_RESYNC_SIZE 65536 43 #define MAX_PES_PAYLOAD 200 * 1024 45 #define MAX_MP4_DESCR_COUNT 16 47 #define MOD_UNLIKELY(modulus, dividend, divisor, prev_dividend) \ 49 if ((prev_dividend) == 0 || (dividend) - (prev_dividend) != (divisor)) \ 50 (modulus) = (dividend) % (divisor); \ 51 (prev_dividend) = (dividend); \ 62 int is_start, int64_t pos);
78 unsigned int check_crc : 1;
79 unsigned int end_of_section_reached : 1;
95 #define MAX_PIDS_PER_PROGRAM 64 142 {
"compute_pcr",
"Compute exact PCR for each transport stream packet.",
145 {
"ts_packetsize",
"Output option carrying the raw packet size.",
170 #define PES_START_SIZE 6 171 #define PES_HEADER_SIZE 9 172 #define MAX_PES_HEADER_SIZE (9 + 255) 202 for (i = 0; i < ts->
nb_prg; i++)
203 if (ts->
prg[i].
id == programid)
231 for (i = 0; i < ts->
nb_prg; i++) {
232 if (ts->
prg[i].
id == programid) {
256 int used = 0, discarded = 0;
267 for (i = 0; i < ts->
nb_prg; i++) {
269 for (j = 0; j < p->
nb_pids; j++) {
270 if (p->
pids[j] != pid)
284 return !used && discarded;
292 const uint8_t *buf,
int buf_size,
int is_start)
420 memset(stat, 0, packet_size *
sizeof(
int));
422 for (x = i = 0; i < size - 3; i++) {
423 if (buf[i] == 0x47 && !(buf[i + 1] & 0x80) && (buf[i + 3] & 0x30)) {
425 if (stat[x] > best_score) {
426 best_score = stat[x];
433 if (x == packet_size)
443 int score, fec_score, dvhs_score;
451 av_dlog(
NULL,
"score: %d, dvhs_score: %d, fec_score: %d \n",
452 score, dvhs_score, fec_score);
454 if (score > fec_score && score > dvhs_score)
456 else if (dvhs_score > score && dvhs_score > fec_score)
458 else if (score < fec_score && dvhs_score < fec_score)
491 if ((p + 1) >= p_end)
507 len =
get8(&p, p_end);
510 if ((p + len) > p_end)
527 val =
get8(pp, p_end);
532 val =
get16(pp, p_end);
536 val =
get8(pp, p_end);
539 h->
version = (val >> 1) & 0x1f;
540 val =
get8(pp, p_end);
544 val =
get8(pp, p_end);
615 uint32_t stream_type,
627 uint32_t stream_type, uint32_t prog_reg_desc)
638 "stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n",
644 if (prog_reg_desc ==
AV_RL32(
"HDMV") &&
655 memcpy(sub_pes, pes,
sizeof(*sub_pes));
663 sub_st->
id = pes->
pid;
714 const uint8_t *buf,
int buf_size)
717 int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
718 int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
719 int dts_flag = -1, cts_flag = -1;
728 au_start_flag = au_end_flag = 1;
738 if (!idle_flag && (!padding_flag || padding_bits != 0)) {
764 if (inst_bitrate_flag)
781 const uint8_t *buf,
int buf_size,
int is_start,
802 while (buf_size > 0) {
803 switch (pes->
state) {
818 code = pes->
header[3] | 0x100;
849 if (code != 0x1bc && code != 0x1bf &&
850 code != 0x1f0 && code != 0x1f1 &&
851 code != 0x1ff && code != 0x1f2 &&
856 "pid=%x stream_type=%x probing\n",
903 unsigned int flags, pes_ext, skip;
909 if ((flags & 0xc0) == 0x80) {
912 }
else if ((flags & 0xc0) == 0xc0) {
922 skip = (pes_ext >> 4) & 0xb;
925 if ((pes_ext & 0x41) == 0x01 &&
928 if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
940 p += sl_header_bytes;
941 buf_size -= sl_header_bytes;
946 if (buf_size > 0 && pes->
buffer) {
1023 Mp4Descr *descr,
int max_descr_count)
1026 if (size > (1 << 30))
1046 (*len) -= new_off - *off;
1082 if (!(id_flags & 0x0020)) {
1161 if (len < 0 || len1 > len || len1 <= 0) {
1163 "Tag %x length violation new length %d bytes remaining %d\n",
1173 if (target_tag && tag != target_tag) {
1205 Mp4Descr *descr,
int *descr_count,
int max_descr_count)
1221 Mp4Descr *descr,
int *descr_count,
int max_descr_count)
1244 int mp4_descr_count = 0;
1249 p_end = section + section_len - 4;
1259 mp4_read_od(s, p, (
unsigned) (p_end - p), mp4_descr, &mp4_descr_count,
1265 for (i = 0; i < mp4_descr_count; i++) {
1279 pes->
sl = mp4_descr[i].
sl;
1282 mp4_descr[i].dec_config_descr_len, 0,
1302 for (i = 0; i < mp4_descr_count; i++)
1303 av_free(mp4_descr[i].dec_config_descr);
1308 Mp4Descr *mp4_descr,
int mp4_descr_count,
int pid,
1312 int desc_len, desc_tag, desc_es_id;
1316 desc_tag =
get8(pp, desc_list_end);
1319 desc_len =
get8(pp, desc_list_end);
1322 desc_end = *pp + desc_len;
1323 if (desc_end > desc_list_end)
1326 av_dlog(fc,
"tag: 0x%02x len=%d\n", desc_tag, desc_len);
1334 desc_es_id =
get16(pp, desc_end);
1335 if (ts && ts->
pids[pid])
1337 for (i = 0; i < mp4_descr_count; i++)
1338 if (mp4_descr[i].dec_config_descr_len &&
1339 mp4_descr[i].es_id == desc_es_id) {
1342 mp4_descr[i].dec_config_descr_len, 0,
1353 get16(pp, desc_end);
1354 if (mp4_descr_count > 0 &&
1368 language[0] =
get8(pp, desc_end);
1369 language[1] =
get8(pp, desc_end);
1370 language[2] =
get8(pp, desc_end);
1375 language[0] =
get8(pp, desc_end);
1376 language[1] =
get8(pp, desc_end);
1377 language[2] =
get8(pp, desc_end);
1380 switch (
get8(pp, desc_end)) {
1405 for (i = 0; i + 4 <= desc_len; i += 4) {
1406 language[i + 0] =
get8(pp, desc_end);
1407 language[i + 1] =
get8(pp, desc_end);
1408 language[i + 2] =
get8(pp, desc_end);
1409 language[i + 3] =
',';
1410 switch (
get8(pp, desc_end)) {
1422 if (i && language[0]) {
1423 language[i - 1] = 0;
1447 const uint8_t *p, *p_end, *desc_list_end;
1448 int program_info_length, pcr_pid, pid, stream_type;
1450 uint32_t prog_reg_desc = 0;
1452 int mp4_descr_count = 0;
1459 p_end = section + section_len - 4;
1474 pcr_pid =
get16(&p, p_end);
1482 program_info_length =
get16(&p, p_end);
1483 if (program_info_length < 0)
1485 program_info_length &= 0xfff;
1486 while (program_info_length >= 2) {
1488 tag =
get8(&p, p_end);
1489 len =
get8(&p, p_end);
1491 av_dlog(ts->
stream,
"program tag: 0x%02x len=%d\n", tag, len);
1493 if (len > program_info_length - 2)
1496 program_info_length -= len + 2;
1503 }
else if (tag == 0x05 && len >= 4) {
1504 prog_reg_desc = bytestream_get_le32(&p);
1509 p += program_info_length;
1521 stream_type =
get8(&p, p_end);
1522 if (stream_type < 0)
1524 pid =
get16(&p, p_end);
1537 }
else if (stream_type != 0x13) {
1566 desc_list_len =
get16(&p, p_end);
1567 if (desc_list_len < 0)
1569 desc_list_len &= 0xfff;
1570 desc_list_end = p + desc_list_len;
1571 if (desc_list_end > p_end)
1575 desc_list_end, mp4_descr,
1576 mp4_descr_count, pid, ts) < 0)
1579 if (pes && prog_reg_desc ==
AV_RL32(
"HDMV") &&
1580 stream_type == 0x83 && pes->
sub_st) {
1590 for (i = 0; i < mp4_descr_count; i++)
1591 av_free(mp4_descr[i].dec_config_descr);
1605 p_end = section + section_len - 4;
1617 sid =
get16(&p, p_end);
1620 pmt_pid =
get16(&p, p_end);
1627 if (sid == 0x0000) {
1631 if (ts->
pids[pmt_pid])
1646 const uint8_t *p, *p_end, *desc_list_end, *desc_end;
1647 int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
1648 char *
name, *provider_name;
1653 p_end = section + section_len - 4;
1663 onid =
get16(&p, p_end);
1666 val =
get8(&p, p_end);
1670 sid =
get16(&p, p_end);
1673 val =
get8(&p, p_end);
1676 desc_list_len =
get16(&p, p_end);
1677 if (desc_list_len < 0)
1679 desc_list_len &= 0xfff;
1680 desc_list_end = p + desc_list_len;
1681 if (desc_list_end > p_end)
1684 desc_tag =
get8(&p, desc_list_end);
1687 desc_len =
get8(&p, desc_list_end);
1688 desc_end = p + desc_len;
1689 if (desc_end > desc_list_end)
1693 desc_tag, desc_len);
1697 service_type =
get8(&p, p_end);
1698 if (service_type < 0)
1700 provider_name =
getstr8(&p, p_end);
1728 int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
1729 has_adaptation, has_payload;
1733 pid =
AV_RB16(packet + 1) & 0x1fff;
1736 is_start = packet[1] & 0x40;
1737 tss = ts->
pids[pid];
1740 tss = ts->
pids[pid];
1745 afc = (packet[3] >> 4) & 3;
1748 has_adaptation = afc & 2;
1749 has_payload = afc & 1;
1750 is_discontinuity = has_adaptation &&
1755 cc = (packet[3] & 0xf);
1756 expected_cc = has_payload ? (tss->
last_cc + 1) & 0x0f : tss->
last_cc;
1757 cc_ok = pid == 0x1FFF ||
1765 "Continuity check failed for pid %d expected %d got %d\n",
1766 pid, expected_cc, cc);
1776 if (has_adaptation) {
1792 if (p + len > p_end)
1841 "max resync size reached, could not find sync byte\n");
1858 if ((*data)[0] != 0x47) {
1885 int packet_num, ret = 0;
1911 if (nb_packets != 0 && packet_num >= nb_packets)
1928 int score, fec_score, dvhs_score;
1930 #define CHECK_COUNT 10 1941 av_dlog(
NULL,
"score: %d, dvhs_score: %d, fec_score: %d \n",
1942 score, dvhs_score, fec_score);
1946 if (score > fec_score && score > dvhs_score && score > 6)
1948 else if (dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6)
1950 else if (fec_score > 6)
1964 afc = (packet[3] >> 4) & 3;
1974 if (!(flags & 0x10))
1979 *ppcr_high = ((int64_t) v << 1) | (p[4] >> 7);
1980 *ppcr_low = ((p[4] & 1) << 8) | p[5];
1997 if (len !=
sizeof(buf))
2005 if (s->
iformat == &ff_mpegts_demuxer) {
2026 int pcr_pid, pid, nb_packets, nb_pcrs, ret, pcr_l;
2027 int64_t pcrs[2], pcr_h;
2028 int packet_count[2];
2049 pid =
AV_RB16(data + 1) & 0x1fff;
2050 if ((pcr_pid == -1 || pcr_pid == pid) &&
2054 packet_count[nb_pcrs] = nb_packets;
2055 pcrs[nb_pcrs] = pcr_h * 300 + pcr_l;
2067 ts->
pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]);
2080 #define MAX_PACKET_READAHEAD ((128 * 1024) / 188) 2086 int64_t pcr_h, next_pcr_h, pos;
2087 int pcr_l, next_pcr_l;
2099 if (data != pkt->
data)
2110 if (
parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
2113 ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
2120 ts->
cur_pcr = pcr_h * 300 + pcr_l;
2152 if (!ret && pkt->
size < 0)
2176 int64_t *ppos, int64_t pos_limit)
2179 int64_t pos, timestamp;
2181 int pcr_l, pcr_pid =
2183 const int find_next = 1;
2192 if ((pcr_pid < 0 || (
AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2193 parse_pcr(×tamp, &pcr_l, buf) == 0) {
2206 if ((pcr_pid < 0 || (
AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
2207 parse_pcr(×tamp, &pcr_l, buf) == 0) {
2279 if (buf[0] != 0x47) {
2311 .
name =
"mpegtsraw",
2320 .priv_class = &mpegtsraw_class,
static void mpegts_free(MpegTSContext *ts)
codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it ...
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
void av_free_packet(AVPacket *pkt)
Free a packet.
static int mpegts_resync(AVFormatContext *s)
void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id)
static void finished_reading_packet(AVFormatContext *s, int raw_packet_size)
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
A dummy id pointing at the start of audio codecs.
int64_t cur_pcr
used to estimate the exact PCR
#define AV_OPT_FLAG_EXPORT
The option is inteded for exporting values to the caller.
#define MAX_PACKET_READAHEAD
enum AVMediaType codec_type
static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define AV_LOG_WARNING
Something somehow does not look correct.
static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
int64_t pos
byte position in stream, -1 if unknown
static void clear_program(MpegTSContext *ts, unsigned int programid)
static void skip_bits_long(GetBitContext *s, int n)
static int mpegts_probe(AVProbeData *p)
int index
stream index in AVFormatContext
MpegTSPESFilter pes_filter
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
enum AVMediaType codec_type
AVInputFormat ff_mpegts_demuxer
static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
A dummy ID pointing at the start of various fake codecs.
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> out
static int parse_section_header(SectionHeader *h, const uint8_t **pp, const uint8_t *p_end)
enum MpegTSFilterType type
static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt)
unsigned int avio_rb16(AVIOContext *s)
int ctx_flags
Flags signalling stream properties.
int pcr_pid
if -1 then all packets containing PCR are considered
unsigned int nb_prg
structure to keep track of Program->pids mapping
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size, const uint8_t **data)
av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
unsigned int pids[MAX_PIDS_PER_PROGRAM]
static int read_sl_header(PESContext *pes, SLConfigDescr *sl, const uint8_t *buf, int buf_size)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
MpegTSFilter * pids[NB_PID_MAX]
filters for various streams specified by PMT + for the PAT and PMT
static int mpegts_read_header(AVFormatContext *s)
Opaque data information usually continuous.
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
unsigned int avio_rb32(AVIOContext *s)
int stop_parse
stop parsing loop
static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len)
static int discard_pid(MpegTSContext *ts, unsigned int pid)
discard_pid() decides if the pid is to be discarded according to caller's programs selection ...
static void add_pat_entry(MpegTSContext *ts, unsigned int programid)
static int mpegts_push_data(MpegTSFilter *filter, const uint8_t *buf, int buf_size, int is_start, int64_t pos)
int id
Format-specific stream ID.
enum AVStreamParseType need_parsing
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVStream ** streams
A list of all streams in the file.
int ffio_read_indirect(AVIOContext *s, unsigned char *buf, int size, const unsigned char **data)
Read size bytes from AVIOContext, returning a pointer.
static void update_offsets(AVIOContext *pb, int64_t *off, int *len)
AVProgram * av_new_program(AVFormatContext *s, int id)
static int get_bits_count(const GetBitContext *s)
#define AVERROR_EOF
End of file.
bitstream reader API header.
static av_cold int read_close(AVFormatContext *ctx)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
enum AVDiscard discard
selects which program to discard and which to feed to the caller
static PESContext * add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
static MpegTSFilter * mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid, PESCallback *pes_cb, void *opaque)
AVInputFormat ff_mpegtsraw_demuxer
static int init_MP4DescrParseContext(MP4DescrParseContext *d, AVFormatContext *s, const uint8_t *buf, unsigned size, Mp4Descr *descr, int max_descr_count)
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
static uint64_t get_bits64(GetBitContext *s, int n)
int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb)
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
AVCodecID
Identify the syntax and semantics of the bitstream.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
static const StreamType HDMV_types[]
static int mpegts_read_close(AVFormatContext *s)
static int mpegts_raw_read_packet(AVFormatContext *s, AVPacket *pkt)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
preferred ID for decoding MPEG audio layer 1, 2 or 3
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
void av_log(void *avcl, int level, const char *fmt,...)
#define TS_FEC_PACKET_SIZE
New fields can be added to the end with minor version bumps.
static int64_t ff_parse_pes_pts(const uint8_t *buf)
Parse MPEG-PES five-byte timestamp.
static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off, int len)
int flags
copied to the AVPacket flags
int pcr_incr
used to estimate the exact PCR
int flags
A combination of AV_PKT_FLAG values.
int avio_r8(AVIOContext *s)
AVCodecContext * codec
Codec context associated with this stream.
MpegTSContext * ff_mpegts_parse_open(AVFormatContext *s)
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
int bit_rate
the average bitrate
int64_t ts_packet_pos
position of first TS packet of this PES packet
SectionCallback * section_cb
static const StreamType REGD_types[]
int PESCallback(MpegTSFilter *f, const uint8_t *buf, int len, int is_start, int64_t pos)
static const StreamType MISC_types[]
static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size, Mp4Descr *descr, int *descr_count, int max_descr_count)
#define TS_DVHS_PACKET_SIZE
static av_always_inline int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
static int handle_packets(MpegTSContext *ts, int nb_packets)
static int mpegts_set_stream_info(AVStream *st, PESContext *pes, uint32_t stream_type, uint32_t prog_reg_desc)
static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len, int target_tag)
static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len)
int mpeg2ts_compute_pcr
compute exact PCR for each transport stream packet
static const AVClass mpegtsraw_class
MpegTSSectionFilter section_filter
unsigned int probesize
Maximum size of the data read from input for determining the input container format.
int ff_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt, const uint8_t *buf, int len)
preferred ID for MPEG-1/2 video decoding
int auto_guess
if true, all pids are analyzed to find streams
int raw_packet_size
raw packet size, including FEC if present
static const StreamType ISO_types[]
static int read_header(FFV1Context *f)
if(ac->has_optimized_func)
FAKE codec to indicate a MPEG-4 Systems stream (only used by libavformat)
#define TS_MAX_PACKET_SIZE
uint8_t * dec_config_descr
enum AVMediaType codec_type
#define MP4DecConfigDescrTag
static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
AVBufferRef * av_buffer_alloc(int size)
Allocate an AVBuffer of the given size using av_malloc().
AVIOContext * pb
I/O context.
static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len)
uint8_t * data
The data buffer.
static void new_pes_packet(PESContext *pes, AVPacket *pkt)
static int get_packet_size(const uint8_t *buf, int size)
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
#define STREAM_TYPE_PRIVATE_DATA
static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
#define MAX_PES_HEADER_SIZE
static int get8(const uint8_t **pp, const uint8_t *p_end)
#define MOD_UNLIKELY(modulus, dividend, divisor, prev_dividend)
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
#define AVERROR_BUG
Bug detected, please report the issue.
#define MAX_PIDS_PER_PROGRAM
static unsigned int get_bits1(GetBitContext *s)
static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, const uint8_t *packet)
Describe the class of an AVClass context structure.
static void skip_bits(GetBitContext *s, int n)
static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
union MpegTSFilter::@113 u
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
refcounted data buffer API
static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
static const StreamType DESC_types[]
This structure contains the data a format has to probe a file.
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
unsigned int end_of_section_reached
static void write_section_data(MpegTSContext *ts, MpegTSFilter *tss1, const uint8_t *buf, int buf_size, int is_start)
Assemble PES packets out of TS packets, and then call the "section_cb" function when they are complet...
int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type, const uint8_t **pp, const uint8_t *desc_list_end, Mp4Descr *mp4_descr, int mp4_descr_count, int pid, MpegTSContext *ts)
Parse an MPEG-2 descriptor.
static void clear_programs(MpegTSContext *ts)
A reference to a data buffer.
static const AVOption options[]
static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag)
void ff_mpegts_parse_close(MpegTSContext *ts)
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
int64_t start_time
Decoding: pts of the first frame of the stream, in stream time base.
int disposition
AV_DISPOSITION_* bit field.
int64_t pos
position corresponding to pos47, or 0 if pos47 invalid
uint8_t header[MAX_PES_HEADER_SIZE]
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
struct AVInputFormat * iformat
The input container format.
static MpegTSFilter * mpegts_open_section_filter(MpegTSContext *ts, unsigned int pid, SectionCallback *section_cb, void *opaque, int check_crc)
FAKE codec to indicate a raw MPEG-2 TS stream (only used by libavformat)
static int get16(const uint8_t **pp, const uint8_t *p_end)
int eof_reached
true if eof reached
AVPacket * pkt
packet containing Audio/Video data
void * priv_data
Format private data.
int64_t last_pos
to detect seek
static int analyze(const uint8_t *buf, int size, int packet_size, int *index)
#define AV_OPT_FLAG_READONLY
The option may not be set through the AVOptions API, only read.
static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid, unsigned int pid)
void SetServiceCallback(void *opaque, int ret)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
int bit_rate
Total stream bitrate in bit/s, 0 if not available.
static int parse_MP4IODescrTag(MP4DescrParseContext *d, int64_t off, int len)
static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
#define MAX_MP4_DESCR_COUNT
#define MKTAG(a, b, c, d)
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
static void mpegts_find_stream_type(AVStream *st, uint32_t stream_type, const StreamType *types)
This structure stores compressed data.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static char * getstr8(const uint8_t **pp, const uint8_t *p_end)
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
A dummy ID pointing at the start of subtitle codecs.
#define AV_NOPTS_VALUE
Undefined timestamp value.
void SectionCallback(MpegTSFilter *f, const uint8_t *buf, int len)
AVStream * sub_st
stream for the embedded AC3 stream in HDMV TrueHD
static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size, Mp4Descr *descr, int *descr_count, int max_descr_count)