5dbafeb7 |
/* |
41ed7ab4 |
* MPEG-2 transport stream (aka DVB) muxer |
406792e7 |
* Copyright (c) 2003 Fabrice Bellard |
5dbafeb7 |
* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
5dbafeb7 |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
5dbafeb7 |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
5dbafeb7 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
5509bffa |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
5dbafeb7 |
*/ |
245976da |
|
ec0b08d2 |
#include "libavutil/avassert.h" |
6a5d31ac |
#include "libavutil/bswap.h" |
245976da |
#include "libavutil/crc.h" |
d2d67e42 |
#include "libavutil/dict.h" |
f1e93986 |
#include "libavutil/intreadwrite.h" |
0ebcdf5c |
#include "libavutil/mathematics.h" |
445996aa |
#include "libavutil/opt.h" |
b7b1bf91 |
|
f1e93986 |
#include "libavcodec/internal.h" |
b7b1bf91 |
|
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#include "avformat.h" |
8e32b1f0 |
#include "avio_internal.h" |
9a2cb05f |
#include "internal.h" |
5dbafeb7 |
#include "mpegts.h"
|
66be80d6 |
#define PCR_TIME_BASE 27000000
|
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/* write DVB SI sections */
|
393596f9 |
#define DVB_PRIVATE_NETWORK_START 0xff01
|
5dbafeb7 |
/*********************************************/
/* mpegts section writer */
typedef struct MpegTSSection {
int pid;
int cc; |
a566c952 |
int discontinuity; |
5dbafeb7 |
void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
void *opaque;
} MpegTSSection;
|
b5931348 |
typedef struct MpegTSService { |
41ed7ab4 |
MpegTSSection pmt; /* MPEG-2 PMT table context */ |
b5931348 |
int sid; /* service ID */
char *name;
char *provider_name;
int pcr_pid;
int pcr_packet_count; |
1aae3489 |
int pcr_packet_period; |
50d017a2 |
AVProgram *program; |
b5931348 |
} MpegTSService;
|
22504396 |
// service_type values as defined in ETSI 300 468
enum {
MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16, |
77a7ff8f |
MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19,
MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F, |
22504396 |
}; |
b5931348 |
typedef struct MpegTSWrite { |
50fefa10 |
const AVClass *av_class; |
41ed7ab4 |
MpegTSSection pat; /* MPEG-2 PAT table */
MpegTSSection sdt; /* MPEG-2 SDT table context */ |
b5931348 |
MpegTSService **services;
int sdt_packet_count; |
1aae3489 |
int sdt_packet_period; |
b5931348 |
int pat_packet_count; |
1aae3489 |
int pat_packet_period; |
b5931348 |
int nb_services;
int onid;
int tsid; |
66be80d6 |
int64_t first_pcr; |
7082ea56 |
int mux_rate; ///< set to 1 when VBR |
891ce00c |
int pes_payload_size; |
445996aa |
int transport_stream_id;
int original_network_id;
int service_id; |
c348a42d |
int service_type; |
445996aa |
int pmt_start_pid;
int start_pid; |
09a858da |
int m2ts_mode; |
ddf42280 |
|
2439bd86 |
int reemit_pat_pmt; // backward compatibility
|
f121dbd9 |
int pcr_period; |
2439bd86 |
#define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
#define MPEGTS_FLAG_AAC_LATM 0x02 |
a9c1545a |
#define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04 |
47074970 |
#define MPEGTS_FLAG_SYSTEM_B 0x08 |
a566c952 |
#define MPEGTS_FLAG_DISCONT 0x10 |
2439bd86 |
int flags; |
80485a4f |
int copyts; |
b7ed18b9 |
int tables_version; |
516d34de |
double pat_period; |
4ffdba24 |
double sdt_period; |
34da54fd |
int64_t last_pat_ts; |
b5e716ae |
int64_t last_sdt_ts; |
f1c48c3a |
|
3bd7a714 |
int omit_video_pes_length; |
b5931348 |
} MpegTSWrite;
|
891ce00c |
/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */ |
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#define DEFAULT_PES_HEADER_FREQ 16 |
891ce00c |
#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
|
89616408 |
/* The section length is 12 bits. The first 2 are set to 0, the remaining
* 10 bits should not exceed 1021. */
#define SECTION_LENGTH 1020
|
5dbafeb7 |
/* NOTE: 4 bytes must be left at the end for the crc32 */ |
7b49ce2e |
static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len) |
5dbafeb7 |
{
unsigned int crc;
unsigned char packet[TS_PACKET_SIZE];
const unsigned char *buf_ptr;
unsigned char *q;
int first, b, len1, left;
|
b7b1bf91 |
crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
-1, buf, len - 4));
|
5dbafeb7 |
buf[len - 4] = (crc >> 24) & 0xff;
buf[len - 3] = (crc >> 16) & 0xff; |
b7b1bf91 |
buf[len - 2] = (crc >> 8) & 0xff; |
6d6bd3a3 |
buf[len - 1] = crc & 0xff; |
115329f1 |
|
5dbafeb7 |
/* send each packet */
buf_ptr = buf;
while (len > 0) { |
6d6bd3a3 |
first = buf == buf_ptr; |
b7b1bf91 |
q = packet;
*q++ = 0x47; |
6d6bd3a3 |
b = s->pid >> 8; |
5dbafeb7 |
if (first)
b |= 0x40; |
b7b1bf91 |
*q++ = b;
*q++ = s->pid; |
6d6bd3a3 |
s->cc = s->cc + 1 & 0xf; |
b7b1bf91 |
*q++ = 0x10 | s->cc; |
a566c952 |
if (s->discontinuity) {
q[-1] |= 0x20;
*q++ = 1;
*q++ = 0x80;
s->discontinuity = 0;
} |
5dbafeb7 |
if (first)
*q++ = 0; /* 0 offset */
len1 = TS_PACKET_SIZE - (q - packet); |
115329f1 |
if (len1 > len) |
5dbafeb7 |
len1 = len;
memcpy(q, buf_ptr, len1);
q += len1;
/* add known padding data */
left = TS_PACKET_SIZE - (q - packet);
if (left > 0)
memset(q, 0xff, left);
s->write_packet(s, packet);
buf_ptr += len1; |
b7b1bf91 |
len -= len1; |
5dbafeb7 |
}
}
static inline void put16(uint8_t **q_ptr, int val)
{
uint8_t *q; |
b7b1bf91 |
q = *q_ptr;
*q++ = val >> 8;
*q++ = val; |
5dbafeb7 |
*q_ptr = q;
}
|
7b49ce2e |
static int mpegts_write_section1(MpegTSSection *s, int tid, int id, |
b7b1bf91 |
int version, int sec_num, int last_sec_num,
uint8_t *buf, int len) |
5dbafeb7 |
{
uint8_t section[1024], *q;
unsigned int tot_len; |
a7827a17 |
/* reserved_future_use field must be set to 1 for SDT */
unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000; |
115329f1 |
|
5dbafeb7 |
tot_len = 3 + 5 + len + 4;
/* check if not too big */
if (tot_len > 1024) |
9a7f2aa9 |
return AVERROR_INVALIDDATA; |
5dbafeb7 |
|
b7b1bf91 |
q = section; |
5dbafeb7 |
*q++ = tid; |
a7827a17 |
put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */ |
5dbafeb7 |
put16(&q, id);
*q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
*q++ = sec_num;
*q++ = last_sec_num;
memcpy(q, buf, len); |
115329f1 |
|
5dbafeb7 |
mpegts_write_section(s, section, tot_len);
return 0;
}
/*********************************************/
/* mpegts writer */
|
2d2b5a14 |
#define DEFAULT_PROVIDER_NAME "FFmpeg" |
5dbafeb7 |
#define DEFAULT_SERVICE_NAME "Service01"
/* we retransmit the SI info at this rate */
#define SDT_RETRANS_TIME 500
#define PAT_RETRANS_TIME 100 |
8b475508 |
#define PCR_RETRANS_TIME 20 |
5dbafeb7 |
typedef struct MpegTSWriteStream { |
8b475508 |
struct MpegTSService *service; |
5dbafeb7 |
int pid; /* stream associated pid */
int cc; |
a566c952 |
int discontinuity; |
1c668624 |
int payload_size; |
b69017af |
int first_pts_check; ///< first pts check needed |
277e5284 |
int prev_payload_key; |
69ef9450 |
int64_t payload_pts; |
700b9711 |
int64_t payload_dts; |
575c38d7 |
int payload_flags; |
891ce00c |
uint8_t *payload; |
b1c56eab |
AVFormatContext *amux; |
194be1f4 |
AVRational user_tb; |
01509cdf |
/* For Opus */
int opus_queued_samples; |
7d6a4797 |
int opus_pending_trim_start; |
5dbafeb7 |
} MpegTSWriteStream;
static void mpegts_write_pat(AVFormatContext *s)
{
MpegTSWrite *ts = s->priv_data;
MpegTSService *service; |
89616408 |
uint8_t data[SECTION_LENGTH], *q; |
5dbafeb7 |
int i; |
115329f1 |
|
5dbafeb7 |
q = data; |
b7b1bf91 |
for (i = 0; i < ts->nb_services; i++) { |
5dbafeb7 |
service = ts->services[i];
put16(&q, service->sid);
put16(&q, 0xe000 | service->pmt.pid);
} |
b7ed18b9 |
mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0, |
5dbafeb7 |
data, q - data);
}
|
9ccdf04b |
/* NOTE: !str is accepted for an empty string */ |
75547212 |
static void putstr8(uint8_t **q_ptr, const char *str, int write_len) |
9ccdf04b |
{
uint8_t *q;
int len;
q = *q_ptr;
if (!str)
len = 0;
else
len = strlen(str); |
75547212 |
if (write_len)
*q++ = len; |
fde9013a |
if (!str) {
*q_ptr = q;
return;
} |
9ccdf04b |
memcpy(q, str, len);
q += len;
*q_ptr = q;
}
|
842b6c14 |
static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service) |
5dbafeb7 |
{ |
2439bd86 |
MpegTSWrite *ts = s->priv_data; |
89616408 |
uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr; |
e8049af1 |
int val, stream_type, i, err = 0; |
5dbafeb7 |
q = data;
put16(&q, 0xe000 | service->pcr_pid);
program_info_length_ptr = q;
q += 2; /* patched after */
/* put program info here */
val = 0xf000 | (q - program_info_length_ptr - 2);
program_info_length_ptr[0] = val >> 8;
program_info_length_ptr[1] = val; |
115329f1 |
|
b7b1bf91 |
for (i = 0; i < s->nb_streams; i++) { |
5dbafeb7 |
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data; |
b7b1bf91 |
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0); |
e8049af1 |
|
edfc835a |
if (s->nb_programs) { |
50d017a2 |
int k, found = 0;
AVProgram *program = service->program;
for (k = 0; k < program->nb_stream_indexes; k++)
if (program->stream_index[k] == i) {
found = 1; |
8b02af1e |
break;
}
if (!found) |
edfc835a |
continue;
}
|
1d7544b7 |
if (q - data > SECTION_LENGTH - 32) { |
e8049af1 |
err = 1;
break;
} |
9200514a |
switch (st->codecpar->codec_id) { |
36ef5369 |
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO: |
278de475 |
stream_type = STREAM_TYPE_VIDEO_MPEG2; |
5dbafeb7 |
break; |
36ef5369 |
case AV_CODEC_ID_MPEG4: |
278de475 |
stream_type = STREAM_TYPE_VIDEO_MPEG4;
break; |
36ef5369 |
case AV_CODEC_ID_H264: |
278de475 |
stream_type = STREAM_TYPE_VIDEO_H264;
break; |
b2880a3d |
case AV_CODEC_ID_HEVC:
stream_type = STREAM_TYPE_VIDEO_HEVC;
break; |
81cf53e1 |
case AV_CODEC_ID_CAVS:
stream_type = STREAM_TYPE_VIDEO_CAVS;
break; |
36ef5369 |
case AV_CODEC_ID_DIRAC: |
f4bba201 |
stream_type = STREAM_TYPE_VIDEO_DIRAC;
break; |
7bf465ab |
case AV_CODEC_ID_VC1:
stream_type = STREAM_TYPE_VIDEO_VC1;
break; |
36ef5369 |
case AV_CODEC_ID_MP2:
case AV_CODEC_ID_MP3: |
fe483ac4 |
if ( st->codecpar->sample_rate > 0
&& st->codecpar->sample_rate < 32000) { |
fd0f1442 |
stream_type = STREAM_TYPE_AUDIO_MPEG2;
} else {
stream_type = STREAM_TYPE_AUDIO_MPEG1;
} |
5dbafeb7 |
break; |
36ef5369 |
case AV_CODEC_ID_AAC: |
b7b1bf91 |
stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
? STREAM_TYPE_AUDIO_AAC_LATM
: STREAM_TYPE_AUDIO_AAC; |
278de475 |
break; |
36ef5369 |
case AV_CODEC_ID_AAC_LATM: |
4d54df8e |
stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
break; |
36ef5369 |
case AV_CODEC_ID_AC3: |
47074970 |
stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
? STREAM_TYPE_PRIVATE_DATA
: STREAM_TYPE_AUDIO_AC3;
break;
case AV_CODEC_ID_EAC3:
stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
? STREAM_TYPE_PRIVATE_DATA
: STREAM_TYPE_AUDIO_EAC3; |
278de475 |
break; |
c9cfd458 |
case AV_CODEC_ID_DTS:
stream_type = STREAM_TYPE_AUDIO_DTS;
break;
case AV_CODEC_ID_TRUEHD:
stream_type = STREAM_TYPE_AUDIO_TRUEHD;
break; |
01509cdf |
case AV_CODEC_ID_OPUS:
stream_type = STREAM_TYPE_PRIVATE_DATA;
break; |
1ab8e03a |
case AV_CODEC_ID_TIMED_ID3:
stream_type = STREAM_TYPE_METADATA;
break; |
5dbafeb7 |
default:
stream_type = STREAM_TYPE_PRIVATE_DATA;
break;
} |
842b6c14 |
|
5dbafeb7 |
*q++ = stream_type;
put16(&q, 0xe000 | ts_st->pid);
desc_length_ptr = q;
q += 2; /* patched after */
/* write optional descriptors here */ |
9200514a |
switch (st->codecpar->codec_type) { |
72415b2a |
case AVMEDIA_TYPE_AUDIO: |
6f69f7a8 |
if (st->codecpar->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) { |
47074970 |
*q++=0x6a; // AC3 descriptor see A038 DVB SI
*q++=1; // 1 byte, all flags sets to 0
*q++=0; // omit all fields...
} |
6f69f7a8 |
if (st->codecpar->codec_id==AV_CODEC_ID_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) { |
f68742bf |
*q++=0x7a; // EAC3 descriptor see A038 DVB SI
*q++=1; // 1 byte, all flags sets to 0
*q++=0; // omit all fields...
} |
6f69f7a8 |
if (st->codecpar->codec_id==AV_CODEC_ID_S302M) { |
cb939468 |
*q++ = 0x05; /* MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'B';
*q++ = 'S';
*q++ = 'S';
*q++ = 'D';
} |
6f69f7a8 |
if (st->codecpar->codec_id==AV_CODEC_ID_OPUS) { |
01509cdf |
/* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
if (q - data > SECTION_LENGTH - 6 - 4) {
err = 1;
break;
}
*q++ = 0x05; /* MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'O';
*q++ = 'p';
*q++ = 'u';
*q++ = 's';
*q++ = 0x7f; /* DVB extension descriptor */
*q++ = 2;
*q++ = 0x80;
|
6f69f7a8 |
if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) { |
01509cdf |
/* RTP mapping family */ |
6f69f7a8 |
*q++ = st->codecpar->channels;
} else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
st->codecpar->extradata_size >= 21 + st->codecpar->channels) { |
01509cdf |
static const uint8_t coupled_stream_counts[9] = {
1, 0, 1, 1, 2, 2, 2, 3, 3
};
static const uint8_t channel_map_a[8][8] = {
{0},
{0, 1},
{0, 2, 1},
{0, 1, 2, 3},
{0, 4, 1, 2, 3},
{0, 4, 1, 2, 3, 5},
{0, 4, 1, 2, 3, 5, 6},
{0, 6, 1, 2, 3, 4, 5, 7},
};
static const uint8_t channel_map_b[8][8] = {
{0},
{0, 1},
{0, 1, 2},
{0, 1, 2, 3},
{0, 1, 2, 3, 4},
{0, 1, 2, 3, 4, 5},
{0, 1, 2, 3, 4, 5, 6},
{0, 1, 2, 3, 4, 5, 6, 7},
};
/* Vorbis mapping family */
|
6f69f7a8 |
if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
*q++ = st->codecpar->channels;
} else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
st->codecpar->extradata[20] == 0 &&
memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
*q++ = st->codecpar->channels | 0x80; |
01509cdf |
} else {
/* Unsupported, could write an extended descriptor here */
av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
*q++ = 0xff;
}
} else {
/* Unsupported */ |
6f69f7a8 |
av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]); |
01509cdf |
*q++ = 0xff;
} |
6f69f7a8 |
} else if (st->codecpar->channels <= 2) { |
01509cdf |
/* Assume RTP mapping family */ |
6f69f7a8 |
*q++ = st->codecpar->channels; |
01509cdf |
} else {
/* Unsupported */
av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
*q++ = 0xff;
}
} |
f68742bf |
|
435cebd0 |
if (lang) {
char *p;
char *next = lang->value;
uint8_t *len_ptr;
|
b7b1bf91 |
*q++ = 0x0a; /* ISO 639 language descriptor */
len_ptr = q++; |
435cebd0 |
*len_ptr = 0;
for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) { |
e8049af1 |
if (q - data > SECTION_LENGTH - 4) {
err = 1;
break;
} |
435cebd0 |
next = strchr(p, ',');
if (strlen(p) != 3 && (!next || next != p + 3))
continue; /* not a 3-letter code */
*q++ = *p++;
*q++ = *p++;
*q++ = *p++;
|
b7b1bf91 |
if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
*q++ = 0x01;
else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
*q++ = 0x02;
else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
*q++ = 0x03;
else
*q++ = 0; /* undefined type */ |
435cebd0 |
*len_ptr += 4;
}
if (*len_ptr == 0)
q -= 2; /* no language codes were written */ |
8b475508 |
}
break; |
72415b2a |
case AVMEDIA_TYPE_SUBTITLE: |
b7b1bf91 |
{ |
ec0b08d2 |
const char default_language[] = "und";
const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
|
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { |
ec0b08d2 |
uint8_t *len_ptr;
int extradata_copied = 0;
*q++ = 0x59; /* subtitling_descriptor */
len_ptr = q++;
|
1d7544b7 |
while (strlen(language) >= 3) {
if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
err = 1;
break;
} |
ec0b08d2 |
*q++ = *language++;
*q++ = *language++;
*q++ = *language++;
/* Skip comma */
if (*language != '\0')
language++;
|
6f69f7a8 |
if (st->codecpar->extradata_size - extradata_copied >= 5) {
*q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */ |
ec0b08d2 |
extradata_copied += 5;
q += 4;
} else {
/* subtitling_type:
* 0x10 - normal with no monitor aspect ratio criticality
* 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
*q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10; |
6f69f7a8 |
if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) { |
ec0b08d2 |
/* support of old 4-byte extradata format */ |
6f69f7a8 |
memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */ |
ec0b08d2 |
extradata_copied += 4;
q += 4;
} else {
put16(&q, 1); /* composition_page_id */
put16(&q, 1); /* ancillary_page_id */
}
}
}
*len_ptr = q - len_ptr - 1; |
6f69f7a8 |
} else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) { |
ec0b08d2 |
uint8_t *len_ptr = NULL;
int extradata_copied = 0;
/* The descriptor tag. teletext_descriptor */
*q++ = 0x56;
len_ptr = q++;
while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
*q++ = *language++;
*q++ = *language++;
*q++ = *language++;
/* Skip comma */
if (*language != '\0')
language++;
|
6f69f7a8 |
if (st->codecpar->extradata_size - 1 > extradata_copied) {
memcpy(q, st->codecpar->extradata + extradata_copied, 2); |
ec0b08d2 |
extradata_copied += 2;
q += 2;
} else {
/* The Teletext descriptor:
* teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
* teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
* teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
*q++ = 0x08;
*q++ = 0x00;
}
}
*len_ptr = q - len_ptr - 1; |
8b475508 |
} |
b7b1bf91 |
}
break; |
72415b2a |
case AVMEDIA_TYPE_VIDEO: |
f4bba201 |
if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
*q++ = 0x05; /*MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'd';
*q++ = 'r';
*q++ = 'a';
*q++ = 'c'; |
7bf465ab |
} else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
*q++ = 0x05; /*MPEG-2 registration descriptor*/
*q++ = 4;
*q++ = 'V';
*q++ = 'C';
*q++ = '-';
*q++ = '1'; |
f4bba201 |
}
break; |
d891d354 |
case AVMEDIA_TYPE_DATA: |
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV) { |
d891d354 |
*q++ = 0x05; /* MPEG-2 registration descriptor */
*q++ = 4;
*q++ = 'K';
*q++ = 'L';
*q++ = 'V';
*q++ = 'A'; |
1ab8e03a |
} else if (st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) { |
75547212 |
const char *tag = "ID3 ";
*q++ = 0x26; /* metadata descriptor */
*q++ = 13;
put16(&q, 0xffff); /* metadata application format */
putstr8(&q, tag, 0);
*q++ = 0xff; /* metadata format */
putstr8(&q, tag, 0);
*q++ = 0; /* metadata service ID */
*q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */ |
d891d354 |
}
break; |
8b475508 |
} |
5dbafeb7 |
val = 0xf000 | (q - desc_length_ptr - 2);
desc_length_ptr[0] = val >> 8;
desc_length_ptr[1] = val;
} |
e8049af1 |
if (err)
av_log(s, AV_LOG_ERROR,
"The PMT section cannot fit stream %d and all following streams.\n"
"Try reducing the number of languages in the audio streams "
"or the total number of streams.\n", i);
|
b7ed18b9 |
mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0, |
5dbafeb7 |
data, q - data); |
842b6c14 |
return 0; |
115329f1 |
} |
5dbafeb7 |
static void mpegts_write_sdt(AVFormatContext *s)
{
MpegTSWrite *ts = s->priv_data;
MpegTSService *service; |
89616408 |
uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr; |
5dbafeb7 |
int i, running_status, free_ca_mode, val; |
115329f1 |
|
5dbafeb7 |
q = data;
put16(&q, ts->onid);
*q++ = 0xff; |
b7b1bf91 |
for (i = 0; i < ts->nb_services; i++) { |
5dbafeb7 |
service = ts->services[i];
put16(&q, service->sid); |
b7b1bf91 |
*q++ = 0xfc | 0x00; /* currently no EIT info */ |
5dbafeb7 |
desc_list_len_ptr = q; |
b7b1bf91 |
q += 2;
running_status = 4; /* running */
free_ca_mode = 0; |
5dbafeb7 |
/* write only one descriptor for the service name and provider */ |
b7b1bf91 |
*q++ = 0x48; |
5dbafeb7 |
desc_len_ptr = q;
q++; |
48e36f8a |
*q++ = ts->service_type; |
75547212 |
putstr8(&q, service->provider_name, 1);
putstr8(&q, service->name, 1); |
5dbafeb7 |
desc_len_ptr[0] = q - desc_len_ptr - 1;
/* fill descriptor length */ |
115329f1 |
val = (running_status << 13) | (free_ca_mode << 12) | |
b7b1bf91 |
(q - desc_list_len_ptr - 2); |
5dbafeb7 |
desc_list_len_ptr[0] = val >> 8;
desc_list_len_ptr[1] = val;
} |
b7ed18b9 |
mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0, |
5dbafeb7 |
data, q - data);
}
|
b7b1bf91 |
static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid, |
115329f1 |
const char *provider_name, |
5dbafeb7 |
const char *name)
{
MpegTSService *service;
service = av_mallocz(sizeof(MpegTSService));
if (!service)
return NULL; |
b7b1bf91 |
service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
service->sid = sid; |
5b220e1e |
service->pcr_pid = 0x1fff; |
5dbafeb7 |
service->provider_name = av_strdup(provider_name); |
b7b1bf91 |
service->name = av_strdup(name); |
5f8300af |
if (!service->provider_name || !service->name)
goto fail;
if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
goto fail;
|
5dbafeb7 |
return service; |
5f8300af |
fail:
av_freep(&service->provider_name);
av_freep(&service->name);
av_free(service);
return NULL; |
5dbafeb7 |
}
|
09a858da |
static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
{
return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
ts->first_pcr;
}
static void mpegts_prefix_m2ts_header(AVFormatContext *s)
{
MpegTSWrite *ts = s->priv_data;
if (ts->m2ts_mode) {
int64_t pcr = get_pcr(s->priv_data, s->pb);
uint32_t tp_extra_header = pcr % 0x3fffffff;
tp_extra_header = AV_RB32(&tp_extra_header);
avio_write(s->pb, (unsigned char *) &tp_extra_header, |
8f8caca2 |
sizeof(tp_extra_header)); |
09a858da |
}
}
|
5dbafeb7 |
static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
{
AVFormatContext *ctx = s->opaque; |
09a858da |
mpegts_prefix_m2ts_header(ctx); |
77eb5504 |
avio_write(ctx->pb, packet, TS_PACKET_SIZE); |
5dbafeb7 |
}
|
1b5bd405 |
static int mpegts_init(AVFormatContext *s) |
5dbafeb7 |
{
MpegTSWrite *ts = s->priv_data;
MpegTSWriteStream *ts_st;
MpegTSService *service; |
7082ea56 |
AVStream *st, *pcr_st = NULL; |
d2d67e42 |
AVDictionaryEntry *title, *provider; |
5fd48573 |
int i, j; |
8b475508 |
const char *service_name; |
69688e71 |
const char *provider_name; |
5fd48573 |
int *pids; |
d1a3a3d4 |
int ret; |
115329f1 |
|
4fa57d52 |
if (s->max_delay < 0) /* Not set by the caller */
s->max_delay = 0;
|
891ce00c |
// round up to a whole number of TS packets
ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
|
445996aa |
ts->tsid = ts->transport_stream_id;
ts->onid = ts->original_network_id; |
edfc835a |
if (!s->nb_programs) {
/* allocate a single DVB service */
title = av_dict_get(s->metadata, "service_name", NULL, 0);
if (!title)
title = av_dict_get(s->metadata, "title", NULL, 0);
service_name = title ? title->value : DEFAULT_SERVICE_NAME;
provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
service = mpegts_add_service(ts, ts->service_id,
provider_name, service_name);
if (!service)
return AVERROR(ENOMEM);
service->pmt.write_packet = section_write_packet;
service->pmt.opaque = s;
service->pmt.cc = 15; |
a566c952 |
service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT; |
edfc835a |
} else {
for (i = 0; i < s->nb_programs; i++) {
AVProgram *program = s->programs[i];
title = av_dict_get(program->metadata, "service_name", NULL, 0);
if (!title)
title = av_dict_get(program->metadata, "title", NULL, 0);
service_name = title ? title->value : DEFAULT_SERVICE_NAME;
provider = av_dict_get(program->metadata, "service_provider", NULL, 0);
provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
service = mpegts_add_service(ts, program->id,
provider_name, service_name);
if (!service)
return AVERROR(ENOMEM);
service->pmt.write_packet = section_write_packet;
service->pmt.opaque = s;
service->pmt.cc = 15; |
a566c952 |
service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT; |
50d017a2 |
service->program = program; |
edfc835a |
}
} |
5dbafeb7 |
|
b7b1bf91 |
ts->pat.pid = PAT_PID;
/* Initialize at 15 so that it wraps and is equal to 0 for the
* first packet we write. */
ts->pat.cc = 15; |
a566c952 |
ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT; |
5dbafeb7 |
ts->pat.write_packet = section_write_packet; |
b7b1bf91 |
ts->pat.opaque = s; |
5dbafeb7 |
|
b7b1bf91 |
ts->sdt.pid = SDT_PID;
ts->sdt.cc = 15; |
a566c952 |
ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT; |
5dbafeb7 |
ts->sdt.write_packet = section_write_packet; |
b7b1bf91 |
ts->sdt.opaque = s; |
5dbafeb7 |
|
337f7486 |
pids = av_malloc_array(s->nb_streams, sizeof(*pids)); |
5b220e1e |
if (!pids) { |
12b59e57 |
ret = AVERROR(ENOMEM);
goto fail; |
5b220e1e |
} |
5fd48573 |
|
5dbafeb7 |
/* assign pids to each stream */ |
b7b1bf91 |
for (i = 0; i < s->nb_streams; i++) { |
26811fd9 |
AVProgram *program; |
5dbafeb7 |
st = s->streams[i]; |
194be1f4 |
|
5dbafeb7 |
ts_st = av_mallocz(sizeof(MpegTSWriteStream)); |
d1a3a3d4 |
if (!ts_st) {
ret = AVERROR(ENOMEM); |
5dbafeb7 |
goto fail; |
d1a3a3d4 |
} |
5dbafeb7 |
st->priv_data = ts_st; |
194be1f4 |
ts_st->user_tb = st->time_base;
avpriv_set_pts_info(st, 33, 1, 90000);
|
891ce00c |
ts_st->payload = av_mallocz(ts->pes_payload_size); |
d1a3a3d4 |
if (!ts_st->payload) {
ret = AVERROR(ENOMEM); |
891ce00c |
goto fail; |
d1a3a3d4 |
} |
26811fd9 |
program = av_find_program_from_stream(s, NULL, i);
if (program) {
for (j = 0; j < ts->nb_services; j++) {
if (ts->services[j]->program == program) {
service = ts->services[j];
break;
}
}
}
|
8b475508 |
ts_st->service = service; |
5fd48573 |
/* MPEG pid values < 16 are reserved. Applications which set st->id in
* this range are assigned a calculated pid. */
if (st->id < 16) { |
445996aa |
ts_st->pid = ts->start_pid + i; |
5fd48573 |
} else if (st->id < 0x1FFF) {
ts_st->pid = st->id;
} else { |
b7b1bf91 |
av_log(s, AV_LOG_ERROR,
"Invalid stream id %d, must be less than 8191\n", st->id); |
d1a3a3d4 |
ret = AVERROR(EINVAL); |
5fd48573 |
goto fail;
}
if (ts_st->pid == service->pmt.pid) {
av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid); |
d1a3a3d4 |
ret = AVERROR(EINVAL); |
5fd48573 |
goto fail;
} |
b7b1bf91 |
for (j = 0; j < i; j++) { |
5fd48573 |
if (pids[j] == ts_st->pid) {
av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid); |
d1a3a3d4 |
ret = AVERROR(EINVAL); |
5fd48573 |
goto fail;
} |
b7b1bf91 |
}
pids[i] = ts_st->pid;
ts_st->payload_pts = AV_NOPTS_VALUE;
ts_st->payload_dts = AV_NOPTS_VALUE; |
b69017af |
ts_st->first_pts_check = 1; |
b7b1bf91 |
ts_st->cc = 15; |
a566c952 |
ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT; |
8b475508 |
/* update PCR pid by using the first video stream */ |
9200514a |
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && |
7082ea56 |
service->pcr_pid == 0x1fff) { |
5dbafeb7 |
service->pcr_pid = ts_st->pid; |
b7b1bf91 |
pcr_st = st; |
9deba199 |
} |
9200514a |
if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
st->codecpar->extradata_size > 0) { |
b1c56eab |
AVStream *ast;
ts_st->amux = avformat_alloc_context();
if (!ts_st->amux) {
ret = AVERROR(ENOMEM); |
891ce00c |
goto fail; |
b1c56eab |
} |
b7b1bf91 |
ts_st->amux->oformat =
av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
NULL, NULL); |
2439bd86 |
if (!ts_st->amux->oformat) {
ret = AVERROR(EINVAL);
goto fail;
} |
5b220e1e |
if (!(ast = avformat_new_stream(ts_st->amux, NULL))) { |
66e30a2e |
ret = AVERROR(ENOMEM);
goto fail;
} |
9200514a |
ret = avcodec_parameters_copy(ast->codecpar, st->codecpar); |
b1c56eab |
if (ret != 0)
goto fail; |
28816050 |
ast->time_base = st->time_base; |
b1c56eab |
ret = avformat_write_header(ts_st->amux, NULL);
if (ret < 0) |
891ce00c |
goto fail; |
8fdd542c |
} |
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate; |
7d6a4797 |
} |
5dbafeb7 |
} |
115329f1 |
|
92a28e9f |
av_freep(&pids); |
5fd48573 |
|
8b475508 |
/* if no video stream, use the first stream as PCR */
if (service->pcr_pid == 0x1fff && s->nb_streams > 0) { |
b7b1bf91 |
pcr_st = s->streams[0];
ts_st = pcr_st->priv_data; |
8b475508 |
service->pcr_pid = ts_st->pid; |
194be1f4 |
} else
ts_st = pcr_st->priv_data; |
8b475508 |
|
7082ea56 |
if (ts->mux_rate > 1) { |
64f7db55 |
service->pcr_packet_period = (int64_t)ts->mux_rate * ts->pcr_period / |
b7b1bf91 |
(TS_PACKET_SIZE * 8 * 1000); |
64f7db55 |
ts->sdt_packet_period = (int64_t)ts->mux_rate * SDT_RETRANS_TIME / |
b7b1bf91 |
(TS_PACKET_SIZE * 8 * 1000); |
64f7db55 |
ts->pat_packet_period = (int64_t)ts->mux_rate * PAT_RETRANS_TIME / |
b7b1bf91 |
(TS_PACKET_SIZE * 8 * 1000); |
e3433702 |
|
ec0b08d2 |
if (ts->copyts < 1) |
80485a4f |
ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE); |
7082ea56 |
} else { |
277e5284 |
/* Arbitrary values, PAT/PMT will also be written on video key frames */ |
7082ea56 |
ts->sdt_packet_period = 200;
ts->pat_packet_period = 40; |
9200514a |
if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
if (!frame_size) { |
7082ea56 |
av_log(s, AV_LOG_WARNING, "frame size not set\n");
service->pcr_packet_period = |
9200514a |
pcr_st->codecpar->sample_rate / (10 * 512); |
7082ea56 |
} else {
service->pcr_packet_period = |
9200514a |
pcr_st->codecpar->sample_rate / (10 * frame_size); |
7082ea56 |
}
} else {
// max delta PCR 0.1s |
194be1f4 |
// TODO: should be avg_frame_rate |
7082ea56 |
service->pcr_packet_period = |
194be1f4 |
ts_st->user_tb.den / (10 * ts_st->user_tb.num); |
7082ea56 |
} |
ec0b08d2 |
if (!service->pcr_packet_period) |
91bdced3 |
service->pcr_packet_period = 1; |
7082ea56 |
}
|
34da54fd |
ts->last_pat_ts = AV_NOPTS_VALUE; |
b5e716ae |
ts->last_sdt_ts = AV_NOPTS_VALUE; |
34da54fd |
// The user specified a period, use only it
if (ts->pat_period < INT_MAX/2) {
ts->pat_packet_period = INT_MAX;
} |
b5e716ae |
if (ts->sdt_period < INT_MAX/2) {
ts->sdt_packet_period = INT_MAX;
} |
34da54fd |
|
6b18a3f5 |
// output a PCR as soon as possible
service->pcr_packet_count = service->pcr_packet_period; |
b7b1bf91 |
ts->pat_packet_count = ts->pat_packet_period - 1;
ts->sdt_packet_count = ts->sdt_packet_period - 1; |
6b18a3f5 |
|
efdccce5 |
if (ts->mux_rate == 1) |
82569b01 |
av_log(s, AV_LOG_VERBOSE, "muxrate VBR, "); |
efdccce5 |
else |
82569b01 |
av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate); |
b7b1bf91 |
av_log(s, AV_LOG_VERBOSE,
"pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n", |
efdccce5 |
service->pcr_packet_period, |
7082ea56 |
ts->sdt_packet_period, ts->pat_packet_period); |
907d9166 |
|
09a858da |
if (ts->m2ts_mode == -1) { |
18ac6423 |
if (av_match_ext(s->url, "m2ts")) { |
09a858da |
ts->m2ts_mode = 1;
} else {
ts->m2ts_mode = 0;
}
}
|
5dbafeb7 |
return 0;
|
b7b1bf91 |
fail: |
92a28e9f |
av_freep(&pids); |
d1a3a3d4 |
return ret; |
5dbafeb7 |
}
|
41ed7ab4 |
/* send SDT, PAT and PMT tables regularly */ |
34da54fd |
static void retransmit_si_info(AVFormatContext *s, int force_pat, int64_t dts) |
5dbafeb7 |
{
MpegTSWrite *ts = s->priv_data;
int i;
|
b5e716ae |
if (++ts->sdt_packet_count == ts->sdt_packet_period ||
(dts != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
(dts != AV_NOPTS_VALUE && dts - ts->last_sdt_ts >= ts->sdt_period*90000.0)
) { |
5dbafeb7 |
ts->sdt_packet_count = 0; |
b5e716ae |
if (dts != AV_NOPTS_VALUE)
ts->last_sdt_ts = FFMAX(dts, ts->last_sdt_ts); |
5dbafeb7 |
mpegts_write_sdt(s);
} |
34da54fd |
if (++ts->pat_packet_count == ts->pat_packet_period ||
(dts != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
(dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) ||
force_pat) { |
5dbafeb7 |
ts->pat_packet_count = 0; |
34da54fd |
if (dts != AV_NOPTS_VALUE)
ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts); |
5dbafeb7 |
mpegts_write_pat(s); |
b7b1bf91 |
for (i = 0; i < ts->nb_services; i++) |
5dbafeb7 |
mpegts_write_pmt(s, ts->services[i]);
}
}
|
575c38d7 |
static int write_pcr_bits(uint8_t *buf, int64_t pcr) |
66be80d6 |
{
int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
*buf++ = pcr_high >> 25;
*buf++ = pcr_high >> 17; |
b7b1bf91 |
*buf++ = pcr_high >> 9;
*buf++ = pcr_high >> 1;
*buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e; |
66be80d6 |
*buf++ = pcr_low;
|
575c38d7 |
return 6; |
66be80d6 |
}
|
4df3bbbc |
/* Write a single null transport stream packet */
static void mpegts_insert_null_packet(AVFormatContext *s)
{
uint8_t *q;
uint8_t buf[TS_PACKET_SIZE];
|
b7b1bf91 |
q = buf; |
4df3bbbc |
*q++ = 0x47;
*q++ = 0x00 | 0x1f;
*q++ = 0xff;
*q++ = 0x10;
memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf)); |
09a858da |
mpegts_prefix_m2ts_header(s); |
77eb5504 |
avio_write(s->pb, buf, TS_PACKET_SIZE); |
4df3bbbc |
}
/* Write a single transport stream packet with a PCR and no payload */
static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
{
MpegTSWrite *ts = s->priv_data;
MpegTSWriteStream *ts_st = st->priv_data;
uint8_t *q;
uint8_t buf[TS_PACKET_SIZE];
|
b7b1bf91 |
q = buf; |
4df3bbbc |
*q++ = 0x47;
*q++ = ts_st->pid >> 8;
*q++ = ts_st->pid;
*q++ = 0x20 | ts_st->cc; /* Adaptation only */
/* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
*q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
*q++ = 0x10; /* Adaptation flags: PCR present */ |
a566c952 |
if (ts_st->discontinuity) {
q[-1] |= 0x80;
ts_st->discontinuity = 0;
} |
4df3bbbc |
/* PCR coded into 6 bytes */ |
575c38d7 |
q += write_pcr_bits(q, get_pcr(ts, s->pb)); |
4df3bbbc |
/* stuffing bytes */
memset(q, 0xFF, TS_PACKET_SIZE - (q - buf)); |
09a858da |
mpegts_prefix_m2ts_header(s); |
77eb5504 |
avio_write(s->pb, buf, TS_PACKET_SIZE); |
4df3bbbc |
}
|
700b9711 |
static void write_pts(uint8_t *q, int fourbits, int64_t pts)
{
int val;
|
b7b1bf91 |
val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1; |
700b9711 |
*q++ = val; |
b7b1bf91 |
val = (((pts >> 15) & 0x7fff) << 1) | 1; |
700b9711 |
*q++ = val >> 8;
*q++ = val; |
b7b1bf91 |
val = (((pts) & 0x7fff) << 1) | 1; |
700b9711 |
*q++ = val >> 8;
*q++ = val;
}
|
575c38d7 |
/* Set an adaptation field flag in an MPEG-TS packet*/
static void set_af_flag(uint8_t *pkt, int flag)
{
// expect at least one flag to set |
53eaca5d |
av_assert0(flag); |
575c38d7 |
if ((pkt[3] & 0x20) == 0) {
// no AF yet, set adaptation field flag
pkt[3] |= 0x20;
// 1 byte length, no flags
pkt[4] = 1;
pkt[5] = 0;
}
pkt[5] |= flag;
}
/* Extend the adaptation field by size bytes */
static void extend_af(uint8_t *pkt, int size)
{
// expect already existing adaptation field |
53eaca5d |
av_assert0(pkt[3] & 0x20); |
575c38d7 |
pkt[4] += size;
}
/* Get a pointer to MPEG-TS payload (right after TS packet header) */
static uint8_t *get_ts_payload_start(uint8_t *pkt)
{
if (pkt[3] & 0x20)
return pkt + 5 + pkt[4];
else
return pkt + 4;
}
|
b7b1bf91 |
/* Add a PES header to the front of the payload, and segment into an integer
* number of TS packets. The final TS packet is padded using an oversized
* adaptation header to exactly fill the last TS packet.
* NOTE: 'payload' contains a complete PES payload. */ |
69ef9450 |
static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
const uint8_t *payload, int payload_size, |
14f7a3d5 |
int64_t pts, int64_t dts, int key, int stream_id) |
5dbafeb7 |
{
MpegTSWriteStream *ts_st = st->priv_data; |
b5931348 |
MpegTSWrite *ts = s->priv_data; |
69ef9450 |
uint8_t buf[TS_PACKET_SIZE]; |
5dbafeb7 |
uint8_t *q; |
2ebee19e |
int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags; |
8b475508 |
int afc_len, stuffing_len;
int64_t pcr = -1; /* avoid warning */ |
4df3bbbc |
int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE); |
6f69f7a8 |
int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key; |
5dbafeb7 |
|
6f69f7a8 |
av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
a9c1545a |
force_pat = 1;
}
|
69ef9450 |
is_start = 1;
while (payload_size > 0) { |
34da54fd |
retransmit_si_info(s, force_pat, dts); |
277e5284 |
force_pat = 0; |
5dbafeb7 |
|
8b475508 |
write_pcr = 0;
if (ts_st->pid == ts_st->service->pcr_pid) { |
7082ea56 |
if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames
ts_st->service->pcr_packet_count++; |
115329f1 |
if (ts_st->service->pcr_packet_count >= |
1aae3489 |
ts_st->service->pcr_packet_period) { |
8b475508 |
ts_st->service->pcr_packet_count = 0;
write_pcr = 1;
}
}
|
7082ea56 |
if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE && |
b7b1bf91 |
(dts - get_pcr(ts, s->pb) / 300) > delay) { |
4df3bbbc |
/* pcr insert gets priority over null packet insert */
if (write_pcr)
mpegts_insert_pcr_only(s, st);
else
mpegts_insert_null_packet(s); |
b7b1bf91 |
/* recalculate write_pcr and possibly retransmit si_info */
continue; |
4df3bbbc |
}
|
69ef9450 |
/* prepare packet header */ |
b7b1bf91 |
q = buf; |
69ef9450 |
*q++ = 0x47; |
6d6bd3a3 |
val = ts_st->pid >> 8; |
69ef9450 |
if (is_start)
val |= 0x40; |
b7b1bf91 |
*q++ = val;
*q++ = ts_st->pid; |
6d6bd3a3 |
ts_st->cc = ts_st->cc + 1 & 0xf; |
b7b1bf91 |
*q++ = 0x10 | ts_st->cc; // payload indicator + CC |
a566c952 |
if (ts_st->discontinuity) {
set_af_flag(buf, 0x80);
q = get_ts_payload_start(buf);
ts_st->discontinuity = 0;
} |
575c38d7 |
if (key && is_start && pts != AV_NOPTS_VALUE) {
// set Random Access for key frames
if (ts_st->pid == ts_st->service->pcr_pid)
write_pcr = 1;
set_af_flag(buf, 0x40);
q = get_ts_payload_start(buf);
} |
8b475508 |
if (write_pcr) { |
575c38d7 |
set_af_flag(buf, 0x10);
q = get_ts_payload_start(buf); |
b5931348 |
// add 11, pcr references the last byte of program clock reference base |
7082ea56 |
if (ts->mux_rate > 1) |
66be80d6 |
pcr = get_pcr(ts, s->pb); |
7082ea56 |
else |
b7b1bf91 |
pcr = (dts - delay) * 300; |
66be80d6 |
if (dts != AV_NOPTS_VALUE && dts < pcr / 300) |
811a0aa7 |
av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n"); |
575c38d7 |
extend_af(buf, write_pcr_bits(q, pcr));
q = get_ts_payload_start(buf); |
8b475508 |
} |
69ef9450 |
if (is_start) { |
f4bba201 |
int pes_extension = 0; |
2ebee19e |
int pes_header_stuffing_bytes = 0; |
69ef9450 |
/* write PES header */
*q++ = 0x00;
*q++ = 0x00;
*q++ = 0x01; |
c917cde9 |
is_dvb_subtitle = 0; |
2ebee19e |
is_dvb_teletext = 0; |
9200514a |
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC) |
f4bba201 |
*q++ = 0xfd; |
b7b1bf91 |
else |
f4bba201 |
*q++ = 0xe0; |
9200514a |
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
(st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
st->codecpar->codec_id == AV_CODEC_ID_AAC)) { |
115329f1 |
*q++ = 0xc0; |
6f69f7a8 |
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
st->codecpar->codec_id == AV_CODEC_ID_AC3 && |
32aeba12 |
ts->m2ts_mode) {
*q++ = 0xfd; |
156b5bb9 |
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
*q++ = 0xbd; |
6f69f7a8 |
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) { |
14f7a3d5 |
*q++ = stream_id != -1 ? stream_id : 0xfc;
if (stream_id == 0xbd) /* asynchronous KLV */
pts = dts = AV_NOPTS_VALUE; |
8b475508 |
} else {
*q++ = 0xbd; |
6f69f7a8 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { |
2ebee19e |
is_dvb_subtitle = 1; |
6f69f7a8 |
} else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) { |
2ebee19e |
is_dvb_teletext = 1;
} |
8b475508 |
}
} |
700b9711 |
header_len = 0; |
b7b1bf91 |
flags = 0; |
700b9711 |
if (pts != AV_NOPTS_VALUE) {
header_len += 5; |
b7b1bf91 |
flags |= 0x80; |
700b9711 |
} |
8f14cdee |
if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) { |
700b9711 |
header_len += 5; |
b7b1bf91 |
flags |= 0x40; |
700b9711 |
} |
9200514a |
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
st->codecpar->codec_id == AV_CODEC_ID_DIRAC) { |
f4bba201 |
/* set PES_extension_flag */
pes_extension = 1; |
b7b1bf91 |
flags |= 0x01; |
f4bba201 |
|
b7b1bf91 |
/* One byte for PES2 extension flag +
* one byte for extension length +
* one byte for extension id */ |
f4bba201 |
header_len += 3;
} |
32aeba12 |
/* for Blu-ray AC3 Audio the PES Extension flag should be as follow
* otherwise it will not play sound on blu-ray
*/
if (ts->m2ts_mode && |
6f69f7a8 |
st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
st->codecpar->codec_id == AV_CODEC_ID_AC3) { |
32aeba12 |
/* set PES_extension_flag */
pes_extension = 1;
flags |= 0x01;
header_len += 3;
} |
2ebee19e |
if (is_dvb_teletext) {
pes_header_stuffing_bytes = 0x24 - header_len;
header_len = 0x24;
} |
700b9711 |
len = payload_size + header_len + 3; |
c917cde9 |
/* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
if (is_dvb_subtitle) {
len += 3;
payload_size++;
} |
e4358e70 |
if (len > 0xffff)
len = 0; |
6f69f7a8 |
if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
60fcc19b |
len = 0;
} |
69ef9450 |
*q++ = len >> 8;
*q++ = len; |
b7b1bf91 |
val = 0x80; |
d891d354 |
/* data alignment indicator is required for subtitle and data streams */ |
6f69f7a8 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) |
8b475508 |
val |= 0x04;
*q++ = val; |
700b9711 |
*q++ = flags;
*q++ = header_len; |
69ef9450 |
if (pts != AV_NOPTS_VALUE) { |
700b9711 |
write_pts(q, flags >> 6, pts);
q += 5;
} |
8f14cdee |
if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) { |
700b9711 |
write_pts(q, 1, dts);
q += 5; |
5dbafeb7 |
} |
9200514a |
if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) { |
f4bba201 |
flags = 0x01; /* set PES_extension_flag_2 */ |
b7b1bf91 |
*q++ = flags;
*q++ = 0x80 | 0x01; /* marker bit + extension length */
/* Set the stream ID extension flag bit to 0 and
* write the extended stream ID. */ |
f4bba201 |
*q++ = 0x00 | 0x60;
} |
32aeba12 |
/* For Blu-ray AC3 Audio Setting extended flags */
if (ts->m2ts_mode &&
pes_extension && |
6f69f7a8 |
st->codecpar->codec_id == AV_CODEC_ID_AC3) { |
32aeba12 |
flags = 0x01; /* set PES_extension_flag_2 */
*q++ = flags;
*q++ = 0x80 | 0x01; /* marker bit + extension length */
*q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
}
|
c917cde9 |
if (is_dvb_subtitle) {
/* First two fields of DVB subtitles PES data:
* data_identifier: for DVB subtitle streams shall be coded with the value 0x20
* subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
*q++ = 0x20;
*q++ = 0x00;
} |
2ebee19e |
if (is_dvb_teletext) {
memset(q, 0xff, pes_header_stuffing_bytes);
q += pes_header_stuffing_bytes;
} |
69ef9450 |
is_start = 0; |
5dbafeb7 |
} |
8b475508 |
/* header size */
header_len = q - buf;
/* data len */
len = TS_PACKET_SIZE - header_len; |
69ef9450 |
if (len > payload_size)
len = payload_size; |
8b475508 |
stuffing_len = TS_PACKET_SIZE - header_len - len;
if (stuffing_len > 0) {
/* add stuffing with AFC */
if (buf[3] & 0x20) {
/* stuffing already present: increase its size */
afc_len = buf[4] + 1;
memmove(buf + 4 + afc_len + stuffing_len, |
115329f1 |
buf + 4 + afc_len, |
8b475508 |
header_len - (4 + afc_len));
buf[4] += stuffing_len;
memset(buf + 4 + afc_len, 0xff, stuffing_len);
} else {
/* add stuffing */
memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
buf[3] |= 0x20; |
b7b1bf91 |
buf[4] = stuffing_len - 1; |
8b475508 |
if (stuffing_len >= 2) {
buf[5] = 0x00;
memset(buf + 6, 0xff, stuffing_len - 2);
}
}
} |
c917cde9 |
if (is_dvb_subtitle && payload_size == len) {
memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
} else {
memcpy(buf + TS_PACKET_SIZE - len, payload, len);
}
|
b7b1bf91 |
payload += len; |
69ef9450 |
payload_size -= len; |
09a858da |
mpegts_prefix_m2ts_header(s); |
77eb5504 |
avio_write(s->pb, buf, TS_PACKET_SIZE); |
5dbafeb7 |
} |
277e5284 |
ts_st->prev_payload_key = key; |
69ef9450 |
}
|
e61973db |
int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
{ |
56ffde3f |
if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) { |
e61973db |
if (!st->nb_frames) {
av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, " |
66d02d3c |
"no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
"('-bsf:v h264_mp4toannexb' option with ffmpeg)\n"); |
d123d9ab |
return AVERROR_INVALIDDATA; |
e61973db |
} |
aaeae281 |
av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size); |
54904525 |
if (pkt->size)
av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data)); |
aaeae281 |
av_log(s, AV_LOG_WARNING, "\n"); |
e61973db |
}
return 0;
}
|
fddea3f0 |
static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
{ |
d0c895d3 |
if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) { |
fddea3f0 |
if (!st->nb_frames) {
av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
return AVERROR_PATCHWELCOME;
} |
aaeae281 |
av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size); |
54904525 |
if (pkt->size)
av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data)); |
aaeae281 |
av_log(s, AV_LOG_WARNING, "\n"); |
fddea3f0 |
}
return 0;
}
|
01509cdf |
/* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
* Released under the LGPL v2.1+, written by
* Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
*/
static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
{
static const int durations[32] = {
480, 960, 1920, 2880, /* Silk NB */
480, 960, 1920, 2880, /* Silk MB */
480, 960, 1920, 2880, /* Silk WB */
480, 960, /* Hybrid SWB */
480, 960, /* Hybrid FB */
120, 240, 480, 960, /* CELT NB */
120, 240, 480, 960, /* CELT NB */
120, 240, 480, 960, /* CELT NB */
120, 240, 480, 960, /* CELT NB */
};
int toc, frame_duration, nframes, duration;
if (pkt->size < 1)
return 0;
toc = pkt->data[0];
frame_duration = durations[toc >> 3];
switch (toc & 3) {
case 0:
nframes = 1;
break;
case 1:
nframes = 2;
break;
case 2:
nframes = 2;
break;
case 3:
if (pkt->size < 2)
return 0;
nframes = pkt->data[1] & 63;
break;
}
duration = nframes * frame_duration;
if (duration > 5760) {
av_log(s, AV_LOG_WARNING,
"Opus packet duration > 120 ms, invalid");
return 0;
}
return duration;
}
|
3fadb29b |
static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt) |
69ef9450 |
{ |
e928649b |
AVStream *st = s->streams[pkt->stream_index]; |
01d6bd52 |
int size = pkt->size; |
b7b1bf91 |
uint8_t *buf = pkt->data;
uint8_t *data = NULL; |
891ce00c |
MpegTSWrite *ts = s->priv_data; |
69ef9450 |
MpegTSWriteStream *ts_st = st->priv_data; |
ec0b08d2 |
const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2; |
80485a4f |
int64_t dts = pkt->dts, pts = pkt->pts; |
01509cdf |
int opus_samples = 0; |
14f7a3d5 |
int side_data_size;
char *side_data = NULL;
int stream_id = -1;
side_data = av_packet_get_side_data(pkt,
AV_PKT_DATA_MPEGTS_STREAM_ID,
&side_data_size);
if (side_data)
stream_id = side_data[0]; |
f3ba7c54 |
|
ddf42280 |
if (ts->reemit_pat_pmt) { |
b7b1bf91 |
av_log(s, AV_LOG_WARNING,
"resend_headers option is deprecated, use -mpegts_flags resend_headers\n"); |
2439bd86 |
ts->reemit_pat_pmt = 0; |
b7b1bf91 |
ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT; |
2439bd86 |
}
if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) { |
ddf42280 |
ts->pat_packet_count = ts->pat_packet_period - 1;
ts->sdt_packet_count = ts->sdt_packet_period - 1; |
b7b1bf91 |
ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT; |
ddf42280 |
}
|
ec0b08d2 |
if (ts->copyts < 1) { |
80485a4f |
if (pts != AV_NOPTS_VALUE)
pts += delay;
if (dts != AV_NOPTS_VALUE)
dts += delay;
} |
69ef9450 |
|
b69017af |
if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) { |
43adc62e |
av_log(s, AV_LOG_ERROR, "first pts value must be set\n"); |
9a7f2aa9 |
return AVERROR_INVALIDDATA; |
b69017af |
}
ts_st->first_pts_check = 0;
|
9200514a |
if (st->codecpar->codec_id == AV_CODEC_ID_H264) { |
b7b1bf91 |
const uint8_t *p = buf, *buf_end = p + size; |
e17d77bb |
uint32_t state = -1; |
6f69f7a8 |
int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0; |
e61973db |
int ret = ff_check_h264_startcode(s, st, pkt);
if (ret < 0)
return ret; |
e17d77bb |
|
6f69f7a8 |
if (extradd && AV_RB24(st->codecpar->extradata) > 1) |
33650e0e |
extradd = 0;
|
e17d77bb |
do { |
f1e93986 |
p = avpriv_find_start_code(p, buf_end, &state); |
54904525 |
av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f); |
33650e0e |
if ((state & 0x1f) == 7)
extradd = 0; |
e17d77bb |
} while (p < buf_end && (state & 0x1f) != 9 &&
(state & 0x1f) != 5 && (state & 0x1f) != 1);
|
33650e0e |
if ((state & 0x1f) != 5)
extradd = 0; |
e17d77bb |
if ((state & 0x1f) != 9) { // AUD NAL |
33650e0e |
data = av_malloc(pkt->size + 6 + extradd); |
a57fb91c |
if (!data) |
9a7f2aa9 |
return AVERROR(ENOMEM); |
6f69f7a8 |
memcpy(data + 6, st->codecpar->extradata, extradd); |
33650e0e |
memcpy(data + 6 + extradd, pkt->data, pkt->size); |
a57fb91c |
AV_WB32(data, 0x00000001);
data[4] = 0x09; |
ef011e6d |
data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit |
b7b1bf91 |
buf = data; |
33650e0e |
size = pkt->size + 6 + extradd; |
a57fb91c |
} |
9200514a |
} else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) { |
b1c56eab |
if (pkt->size < 2) {
av_log(s, AV_LOG_ERROR, "AAC packet too short\n"); |
9a7f2aa9 |
return AVERROR_INVALIDDATA; |
b1c56eab |
} |
8fdd542c |
if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) { |
b1c56eab |
int ret;
AVPacket pkt2;
if (!ts_st->amux) { |
3fcf841f |
av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format " |
b7b1bf91 |
"and extradata missing\n"); |
1d5edad8 |
} else { |
b1c56eab |
av_init_packet(&pkt2);
pkt2.data = pkt->data;
pkt2.size = pkt->size; |
6552e23d |
av_assert0(pkt->dts != AV_NOPTS_VALUE);
pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base); |
b7b1bf91 |
|
84e430dd |
ret = avio_open_dyn_buf(&ts_st->amux->pb);
if (ret < 0) |
2874c81c |
return AVERROR(ENOMEM); |
b1c56eab |
ret = av_write_frame(ts_st->amux, &pkt2);
if (ret < 0) { |
8e32b1f0 |
ffio_free_dyn_buf(&ts_st->amux->pb); |
b1c56eab |
return ret; |
ac47e014 |
} |
b7b1bf91 |
size = avio_close_dyn_buf(ts_st->amux->pb, &data); |
84e430dd |
ts_st->amux->pb = NULL; |
b7b1bf91 |
buf = data; |
1d5edad8 |
} |
8fdd542c |
} |
6f69f7a8 |
} else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) { |
b05d8e71 |
const uint8_t *p = buf, *buf_end = p + size;
uint32_t state = -1;
int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0; |
fddea3f0 |
int ret = check_hevc_startcode(s, st, pkt);
if (ret < 0)
return ret; |
b05d8e71 |
if (extradd && AV_RB24(st->codecpar->extradata) > 1)
extradd = 0;
do {
p = avpriv_find_start_code(p, buf_end, &state); |
54904525 |
av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1); |
b05d8e71 |
if ((state & 0x7e) == 2*32)
extradd = 0;
} while (p < buf_end && (state & 0x7e) != 2*35 &&
(state & 0x7e) >= 2*32);
if ((state & 0x7e) < 2*16 && (state & 0x7e) >= 2*24)
extradd = 0;
if ((state & 0x7e) != 2*35) { // AUD NAL
data = av_malloc(pkt->size + 7 + extradd);
if (!data)
return AVERROR(ENOMEM);
memcpy(data + 7, st->codecpar->extradata, extradd);
memcpy(data + 7 + extradd, pkt->data, pkt->size);
AV_WB32(data, 0x00000001);
data[4] = 2*35;
data[5] = 1;
data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
buf = data;
size = pkt->size + 7 + extradd;
} |
6f69f7a8 |
} else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) { |
01509cdf |
if (pkt->size < 2) {
av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
return AVERROR_INVALIDDATA;
}
/* Add Opus control header */
if ((AV_RB16(pkt->data) >> 5) != 0x3ff) { |
7d6a4797 |
uint8_t *side_data;
int side_data_size; |
01509cdf |
int i, n; |
7d6a4797 |
int ctrl_header_size;
int trim_start = 0, trim_end = 0; |
01509cdf |
opus_samples = opus_get_packet_samples(s, pkt);
|
7d6a4797 |
side_data = av_packet_get_side_data(pkt,
AV_PKT_DATA_SKIP_SAMPLES,
&side_data_size);
if (side_data && side_data_size >= 10) { |
6f69f7a8 |
trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate; |
7d6a4797 |
}
ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
if (ts_st->opus_pending_trim_start)
ctrl_header_size += 2;
if (trim_end)
ctrl_header_size += 2;
data = av_malloc(ctrl_header_size); |
01509cdf |
if (!data)
return AVERROR(ENOMEM);
data[0] = 0x7f;
data[1] = 0xe0; |
7d6a4797 |
if (ts_st->opus_pending_trim_start)
data[1] |= 0x10;
if (trim_end)
data[1] |= 0x08; |
01509cdf |
n = pkt->size;
i = 2;
do {
data[i] = FFMIN(n, 255);
n -= 255;
i++;
} while (n >= 0);
av_assert0(2 + pkt->size / 255 + 1 == i);
|
7d6a4797 |
if (ts_st->opus_pending_trim_start) {
trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
AV_WB16(data + i, trim_start);
i += 2;
ts_st->opus_pending_trim_start -= trim_start;
}
if (trim_end) {
trim_end = FFMIN(trim_end, opus_samples - trim_start);
AV_WB16(data + i, trim_end);
i += 2;
}
|
01509cdf |
memcpy(data + i, pkt->data, pkt->size);
buf = data; |
7d6a4797 |
size = ctrl_header_size; |
01509cdf |
} else {
/* TODO: Can we get TS formatted data here? If so we will
* need to count the samples of that too! */
av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
} |
de34dc39 |
}
|
3700f655 |
if (pkt->dts != AV_NOPTS_VALUE) {
int i; |
ec0b08d2 |
for(i=0; i<s->nb_streams; i++) { |
3700f655 |
AVStream *st2 = s->streams[i];
MpegTSWriteStream *ts_st2 = st2->priv_data; |
ec0b08d2 |
if ( ts_st2->payload_size
&& (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) { |
6bb35f43 |
mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size, |
14f7a3d5 |
ts_st2->payload_pts, ts_st2->payload_dts,
ts_st2->payload_flags & AV_PKT_FLAG_KEY, stream_id); |
6bb35f43 |
ts_st2->payload_size = 0; |
3700f655 |
}
}
}
|
5b97681e |
if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
(dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
av_compare_ts(dts - ts_st->payload_dts, st->time_base, |
01509cdf |
s->max_delay, AV_TIME_BASE_Q) >= 0) ||
ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) { |
1c668624 |
mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size, |
575c38d7 |
ts_st->payload_pts, ts_st->payload_dts, |
14f7a3d5 |
ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id); |
1c668624 |
ts_st->payload_size = 0; |
01509cdf |
ts_st->opus_queued_samples = 0; |
84df78b4 |
}
|
6f69f7a8 |
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) { |
0edf7ebc |
av_assert0(!ts_st->payload_size); |
e31c5ebe |
// for video and subtitle, write a single pes packet |
b7b1bf91 |
mpegts_write_pes(s, st, buf, size, pts, dts, |
14f7a3d5 |
pkt->flags & AV_PKT_FLAG_KEY, stream_id); |
01509cdf |
ts_st->opus_queued_samples = 0; |
e31c5ebe |
av_free(data);
return 0;
}
|
1c668624 |
if (!ts_st->payload_size) { |
b7b1bf91 |
ts_st->payload_pts = pts;
ts_st->payload_dts = dts; |
575c38d7 |
ts_st->payload_flags = pkt->flags; |
69ef9450 |
} |
a57fb91c |
|
1c668624 |
memcpy(ts_st->payload + ts_st->payload_size, buf, size);
ts_st->payload_size += size; |
01509cdf |
ts_st->opus_queued_samples += opus_samples; |
01d6bd52 |
|
83c2bc7a |
av_free(data);
|
5dbafeb7 |
return 0;
}
|
3fadb29b |
static void mpegts_write_flush(AVFormatContext *s) |
5dbafeb7 |
{
int i;
/* flush current packets */ |
b7b1bf91 |
for (i = 0; i < s->nb_streams; i++) { |
3fadb29b |
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data; |
1c668624 |
if (ts_st->payload_size > 0) {
mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size, |
575c38d7 |
ts_st->payload_pts, ts_st->payload_dts, |
14f7a3d5 |
ts_st->payload_flags & AV_PKT_FLAG_KEY, -1); |
3fadb29b |
ts_st->payload_size = 0; |
01509cdf |
ts_st->opus_queued_samples = 0; |
5dbafeb7 |
} |
3fadb29b |
}
}
static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
{
if (!pkt) {
mpegts_write_flush(s);
return 1;
} else {
return mpegts_write_packet_internal(s, pkt);
}
}
static int mpegts_write_end(AVFormatContext *s)
{ |
1b5bd405 |
if (s->pb)
mpegts_write_flush(s);
return 0;
}
static void mpegts_deinit(AVFormatContext *s)
{ |
3fadb29b |
MpegTSWrite *ts = s->priv_data;
MpegTSService *service;
int i;
|
b7b1bf91 |
for (i = 0; i < s->nb_streams; i++) { |
3fadb29b |
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data; |
1b5bd405 |
if (ts_st) {
av_freep(&ts_st->payload);
if (ts_st->amux) {
avformat_free_context(ts_st->amux);
ts_st->amux = NULL;
} |
b1c56eab |
} |
5dbafeb7 |
} |
115329f1 |
|
b7b1bf91 |
for (i = 0; i < ts->nb_services; i++) { |
5dbafeb7 |
service = ts->services[i];
av_freep(&service->provider_name);
av_freep(&service->name); |
f7a4589b |
av_freep(&service); |
5dbafeb7 |
} |
f7a4589b |
av_freep(&ts->services); |
1b5bd405 |
} |
5dbafeb7 |
|
1b5bd405 |
static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
{
int ret = 1;
AVStream *st = s->streams[pkt->stream_index];
|
6f69f7a8 |
if (st->codecpar->codec_id == AV_CODEC_ID_H264) { |
1b5bd405 |
if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 && |
14fe54bb |
(AV_RB24(pkt->data) != 0x000001 ||
(st->codecpar->extradata_size > 0 &&
st->codecpar->extradata[0] == 1))) |
1b5bd405 |
ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL); |
6f69f7a8 |
} else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) { |
1b5bd405 |
if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 && |
14fe54bb |
(AV_RB24(pkt->data) != 0x000001 ||
(st->codecpar->extradata_size > 0 &&
st->codecpar->extradata[0] == 1))) |
1b5bd405 |
ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
}
return ret; |
5dbafeb7 |
}
|
3f7e94ec |
static const AVOption options[] = {
{ "mpegts_transport_stream_id", "Set transport_stream_id field.", |
b7b1bf91 |
offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
{ .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM }, |
3f7e94ec |
{ "mpegts_original_network_id", "Set original_network_id field.", |
b7b1bf91 |
offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT, |
393596f9 |
{ .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM }, |
3f7e94ec |
{ "mpegts_service_id", "Set service_id field.", |
b7b1bf91 |
offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
{ .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM }, |
48e36f8a |
{ "mpegts_service_type", "Set service_type field.",
offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
{ .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "digital_tv", "Digital Television.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "digital_radio", "Digital Radio.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "teletext", "Teletext.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
{ "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
77a7ff8f |
{ "hevc_digital_hdtv", "HEVC Digital Television Service.",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
3f7e94ec |
{ "mpegts_pmt_start_pid", "Set the first pid of the PMT.", |
b7b1bf91 |
offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, |
ec0b08d2 |
{ .i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM }, |
3f7e94ec |
{ "mpegts_start_pid", "Set the first pid.", |
b7b1bf91 |
offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT, |
58776ccb |
{ .i64 = 0x0100 }, 0x0010, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM }, |
ec0b08d2 |
{ "mpegts_m2ts_mode", "Enable m2ts mode.", |
43ecec0f |
offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_BOOL, |
ec0b08d2 |
{ .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM }, |
b7b1bf91 |
{ "muxrate", NULL,
offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
{ .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
3f7e94ec |
{ "pes_payload_size", "Minimum PES packet payload in bytes", |
b7b1bf91 |
offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
{ .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ "mpegts_flags", "MPEG-TS muxing flags",
offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, |
3f7e94ec |
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
{ "resend_headers", "Reemit PAT/PMT before writing the next packet", |
b7b1bf91 |
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
3f7e94ec |
{ "latm", "Use LATM packetization for AAC", |
b7b1bf91 |
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
a9c1545a |
{ "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
47074970 |
{ "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
a566c952 |
{ "initial_discontinuity", "Mark initial packets as discontinuous",
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
3f7e94ec |
// backward compatibility
{ "resend_headers", "Reemit PAT/PMT before writing the next packet", |
b7b1bf91 |
offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
2d99b404 |
{ "mpegts_copyts", "don't offset dts/pts", |
43ecec0f |
offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_BOOL, |
ec0b08d2 |
{ .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM }, |
2d99b404 |
{ "tables_version", "set PAT, PMT and SDT version", |
ec0b08d2 |
offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM }, |
2d99b404 |
{ "omit_video_pes_length", "Omit the PES packet length for video packets", |
43ecec0f |
offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_BOOL, |
ec0b08d2 |
{ .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM }, |
e7282674 |
{ "pcr_period", "PCR retransmission time in milliseconds", |
b7b1bf91 |
offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT,
{ .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
34da54fd |
{ "pat_period", "PAT/PMT retransmission time limit in seconds", |
516d34de |
offsetof(MpegTSWrite, pat_period), AV_OPT_TYPE_DOUBLE, |
34da54fd |
{ .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
b5e716ae |
{ "sdt_period", "SDT retransmission time limit in seconds", |
4ffdba24 |
offsetof(MpegTSWrite, sdt_period), AV_OPT_TYPE_DOUBLE, |
b5e716ae |
{ .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
3f7e94ec |
{ NULL },
};
static const AVClass mpegts_muxer_class = { |
b7b1bf91 |
.class_name = "MPEGTS muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT, |
3f7e94ec |
};
|
c6610a21 |
AVOutputFormat ff_mpegts_muxer = { |
b7b1bf91 |
.name = "mpegts",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"), |
ec0b08d2 |
.mime_type = "video/MP2T",
.extensions = "ts,m2t,m2ts,mts", |
b7b1bf91 |
.priv_data_size = sizeof(MpegTSWrite),
.audio_codec = AV_CODEC_ID_MP2,
.video_codec = AV_CODEC_ID_MPEG2VIDEO, |
1b5bd405 |
.init = mpegts_init, |
b7b1bf91 |
.write_packet = mpegts_write_packet,
.write_trailer = mpegts_write_end, |
1b5bd405 |
.deinit = mpegts_deinit,
.check_bitstream = mpegts_check_bitstream, |
4512ee78 |
.flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS, |
b7b1bf91 |
.priv_class = &mpegts_muxer_class, |
5dbafeb7 |
}; |