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mpegts: K&R formatting cosmetics

tags/n2.4
Diego Biurrun 10 years ago
parent
bb789016d4
commit
b7b1bf9166
1 changed files with 216 additions and 196 deletions
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  1. +216
    -196
      libavformat/mpegtsenc.c

+ 216
- 196
libavformat/mpegtsenc.c View File

@@ -25,7 +25,9 @@
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"

#include "libavcodec/internal.h"

#include "avformat.h"
#include "internal.h"
#include "mpegts.h"
@@ -86,7 +88,7 @@ typedef struct MpegTSWrite {
} MpegTSWrite;

/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
#define DEFAULT_PES_HEADER_FREQ 16
#define DEFAULT_PES_HEADER_FREQ 16
#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)

/* The section length is 12 bits. The first 2 are set to 0, the remaining
@@ -102,25 +104,27 @@ static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
unsigned char *q;
int first, b, len1, left;

crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, buf, len - 4));
crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
-1, buf, len - 4));

buf[len - 4] = (crc >> 24) & 0xff;
buf[len - 3] = (crc >> 16) & 0xff;
buf[len - 2] = (crc >> 8) & 0xff;
buf[len - 1] = (crc) & 0xff;
buf[len - 2] = (crc >> 8) & 0xff;
buf[len - 1] = (crc) & 0xff;

/* send each packet */
buf_ptr = buf;
while (len > 0) {
first = (buf == buf_ptr);
q = packet;
*q++ = 0x47;
b = (s->pid >> 8);
q = packet;
*q++ = 0x47;
b = (s->pid >> 8);
if (first)
b |= 0x40;
*q++ = b;
*q++ = s->pid;
*q++ = b;
*q++ = s->pid;
s->cc = (s->cc + 1) & 0xf;
*q++ = 0x10 | s->cc;
*q++ = 0x10 | s->cc;
if (first)
*q++ = 0; /* 0 offset */
len1 = TS_PACKET_SIZE - (q - packet);
@@ -136,22 +140,22 @@ static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
s->write_packet(s, packet);

buf_ptr += len1;
len -= len1;
len -= len1;
}
}

static inline void put16(uint8_t **q_ptr, int val)
{
uint8_t *q;
q = *q_ptr;
*q++ = val >> 8;
*q++ = val;
q = *q_ptr;
*q++ = val >> 8;
*q++ = val;
*q_ptr = q;
}

static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
int version, int sec_num, int last_sec_num,
uint8_t *buf, int len)
int version, int sec_num, int last_sec_num,
uint8_t *buf, int len)
{
uint8_t section[1024], *q;
unsigned int tot_len;
@@ -163,7 +167,7 @@ static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
if (tot_len > 1024)
return -1;

q = section;
q = section;
*q++ = tid;
put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
put16(&q, id);
@@ -209,7 +213,7 @@ static void mpegts_write_pat(AVFormatContext *s)
int i;

q = data;
for(i = 0; i < ts->nb_services; i++) {
for (i = 0; i < ts->nb_services; i++) {
service = ts->services[i];
put16(&q, service->sid);
put16(&q, 0xe000 | service->pmt.pid);
@@ -236,11 +240,11 @@ static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
program_info_length_ptr[0] = val >> 8;
program_info_length_ptr[1] = val;

for(i = 0; i < s->nb_streams; i++) {
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data;
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
switch(st->codec->codec_id) {
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
switch (st->codec->codec_id) {
case AV_CODEC_ID_MPEG1VIDEO:
case AV_CODEC_ID_MPEG2VIDEO:
stream_type = STREAM_TYPE_VIDEO_MPEG2;
@@ -265,7 +269,9 @@ static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
stream_type = STREAM_TYPE_AUDIO_MPEG1;
break;
case AV_CODEC_ID_AAC:
stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM) ? STREAM_TYPE_AUDIO_AAC_LATM : STREAM_TYPE_AUDIO_AAC;
stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
? STREAM_TYPE_AUDIO_AAC_LATM
: STREAM_TYPE_AUDIO_AAC;
break;
case AV_CODEC_ID_AAC_LATM:
stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
@@ -283,15 +289,15 @@ static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
q += 2; /* patched after */

/* write optional descriptors here */
switch(st->codec->codec_type) {
switch (st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if (lang) {
char *p;
char *next = lang->value;
uint8_t *len_ptr;

*q++ = 0x0a; /* ISO 639 language descriptor */
len_ptr = q++;
*q++ = 0x0a; /* ISO 639 language descriptor */
len_ptr = q++;
*len_ptr = 0;

for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
@@ -303,14 +309,14 @@ static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
*q++ = *p++;
*q++ = *p++;

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 */
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 */

*len_ptr += 4;
}
@@ -320,24 +326,24 @@ static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
}
break;
case AVMEDIA_TYPE_SUBTITLE:
{
const char *language;
language = lang && strlen(lang->value)==3 ? lang->value : "eng";
*q++ = 0x59;
*q++ = 8;
*q++ = language[0];
*q++ = language[1];
*q++ = language[2];
*q++ = 0x10; /* normal subtitles (0x20 = if hearing pb) */
if(st->codec->extradata_size == 4) {
memcpy(q, st->codec->extradata, 4);
q += 4;
} else {
put16(&q, 1); /* page id */
put16(&q, 1); /* ancillary page id */
}
{
const char *language;
language = lang && strlen(lang->value) == 3 ? lang->value : "eng";
*q++ = 0x59;
*q++ = 8;
*q++ = language[0];
*q++ = language[1];
*q++ = language[2];
*q++ = 0x10; /* normal subtitles (0x20 = if hearing pb) */
if (st->codec->extradata_size == 4) {
memcpy(q, st->codec->extradata, 4);
q += 4;
} else {
put16(&q, 1); /* page id */
put16(&q, 1); /* ancillary page id */
}
break;
}
break;
case AVMEDIA_TYPE_VIDEO:
if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
*q++ = 0x05; /*MPEG-2 registration descriptor*/
@@ -371,7 +377,7 @@ static void putstr8(uint8_t **q_ptr, const char *str)
len = strlen(str);
*q++ = len;
memcpy(q, str, len);
q += len;
q += len;
*q_ptr = q;
}

@@ -385,27 +391,27 @@ static void mpegts_write_sdt(AVFormatContext *s)
q = data;
put16(&q, ts->onid);
*q++ = 0xff;
for(i = 0; i < ts->nb_services; i++) {
for (i = 0; i < ts->nb_services; i++) {
service = ts->services[i];
put16(&q, service->sid);
*q++ = 0xfc | 0x00; /* currently no EIT info */
*q++ = 0xfc | 0x00; /* currently no EIT info */
desc_list_len_ptr = q;
q += 2;
running_status = 4; /* running */
free_ca_mode = 0;
q += 2;
running_status = 4; /* running */
free_ca_mode = 0;

/* write only one descriptor for the service name and provider */
*q++ = 0x48;
*q++ = 0x48;
desc_len_ptr = q;
q++;
*q++ = 0x01; /* digital television service */
*q++ = 0x01; /* digital television service */
putstr8(&q, service->provider_name);
putstr8(&q, service->name);
desc_len_ptr[0] = q - desc_len_ptr - 1;

/* fill descriptor length */
val = (running_status << 13) | (free_ca_mode << 12) |
(q - desc_list_len_ptr - 2);
(q - desc_list_len_ptr - 2);
desc_list_len_ptr[0] = val >> 8;
desc_list_len_ptr[1] = val;
}
@@ -413,8 +419,7 @@ static void mpegts_write_sdt(AVFormatContext *s)
data, q - data);
}

static MpegTSService *mpegts_add_service(MpegTSWrite *ts,
int sid,
static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid,
const char *provider_name,
const char *name)
{
@@ -423,11 +428,11 @@ static MpegTSService *mpegts_add_service(MpegTSWrite *ts,
service = av_mallocz(sizeof(MpegTSService));
if (!service)
return NULL;
service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
service->sid = sid;
service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
service->sid = sid;
service->provider_name = av_strdup(provider_name);
service->name = av_strdup(name);
service->pcr_pid = 0x1fff;
service->name = av_strdup(name);
service->pcr_pid = 0x1fff;
dynarray_add(&ts->services, &ts->nb_services, service);
return service;
}
@@ -463,30 +468,34 @@ static int mpegts_write_header(AVFormatContext *s)
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);
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);
service = mpegts_add_service(ts, ts->service_id,
provider_name, service_name);

service->pmt.write_packet = section_write_packet;
service->pmt.opaque = s;
service->pmt.cc = 15;
service->pmt.opaque = s;
service->pmt.cc = 15;

ts->pat.pid = PAT_PID;
ts->pat.cc = 15; // Initialize at 15 so that it wraps and be equal to 0 for the first packet we write
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;
ts->pat.write_packet = section_write_packet;
ts->pat.opaque = s;
ts->pat.opaque = s;

ts->sdt.pid = SDT_PID;
ts->sdt.cc = 15;
ts->sdt.pid = SDT_PID;
ts->sdt.cc = 15;
ts->sdt.write_packet = section_write_packet;
ts->sdt.opaque = s;
ts->sdt.opaque = s;

pids = av_malloc(s->nb_streams * sizeof(*pids));
if (!pids)
return AVERROR(ENOMEM);

/* assign pids to each stream */
for(i = 0;i < s->nb_streams; i++) {
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];

ts_st = av_mallocz(sizeof(MpegTSWriteStream));
@@ -512,7 +521,8 @@ static int mpegts_write_header(AVFormatContext *s)
} else if (st->id < 0x1FFF) {
ts_st->pid = st->id;
} else {
av_log(s, AV_LOG_ERROR, "Invalid stream id %d, must be less than 8191\n", st->id);
av_log(s, AV_LOG_ERROR,
"Invalid stream id %d, must be less than 8191\n", st->id);
ret = AVERROR(EINVAL);
goto fail;
}
@@ -521,33 +531,35 @@ static int mpegts_write_header(AVFormatContext *s)
ret = AVERROR(EINVAL);
goto fail;
}
for (j = 0; j < i; j++)
for (j = 0; j < i; j++) {
if (pids[j] == ts_st->pid) {
av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
ret = AVERROR(EINVAL);
goto fail;
}
pids[i] = ts_st->pid;
ts_st->payload_pts = AV_NOPTS_VALUE;
ts_st->payload_dts = AV_NOPTS_VALUE;
}
pids[i] = ts_st->pid;
ts_st->payload_pts = AV_NOPTS_VALUE;
ts_st->payload_dts = AV_NOPTS_VALUE;
ts_st->first_pts_check = 1;
ts_st->cc = 15;
ts_st->cc = 15;
/* update PCR pid by using the first video stream */
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
service->pcr_pid == 0x1fff) {
service->pcr_pid = ts_st->pid;
pcr_st = st;
pcr_st = st;
}
if (st->codec->codec_id == AV_CODEC_ID_AAC &&
st->codec->extradata_size > 0)
{
st->codec->extradata_size > 0) {
AVStream *ast;
ts_st->amux = avformat_alloc_context();
if (!ts_st->amux) {
ret = AVERROR(ENOMEM);
goto fail;
}
ts_st->amux->oformat = av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts", NULL, NULL);
ts_st->amux->oformat =
av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
NULL, NULL);
if (!ts_st->amux->oformat) {
ret = AVERROR(EINVAL);
goto fail;
@@ -566,19 +578,19 @@ static int mpegts_write_header(AVFormatContext *s)

/* if no video stream, use the first stream as PCR */
if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
pcr_st = s->streams[0];
ts_st = pcr_st->priv_data;
pcr_st = s->streams[0];
ts_st = pcr_st->priv_data;
service->pcr_pid = ts_st->pid;
} else
ts_st = pcr_st->priv_data;

if (ts->mux_rate > 1) {
service->pcr_packet_period = (ts->mux_rate * ts->pcr_period) /
(TS_PACKET_SIZE * 8 * 1000);
(TS_PACKET_SIZE * 8 * 1000);
ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
(TS_PACKET_SIZE * 8 * 1000);
ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) /
(TS_PACKET_SIZE * 8 * 1000);
(TS_PACKET_SIZE * 8 * 1000);

ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
} else {
@@ -589,10 +601,10 @@ static int mpegts_write_header(AVFormatContext *s)
if (!pcr_st->codec->frame_size) {
av_log(s, AV_LOG_WARNING, "frame size not set\n");
service->pcr_packet_period =
pcr_st->codec->sample_rate/(10*512);
pcr_st->codec->sample_rate / (10 * 512);
} else {
service->pcr_packet_period =
pcr_st->codec->sample_rate/(10*pcr_st->codec->frame_size);
pcr_st->codec->sample_rate / (10 * pcr_st->codec->frame_size);
}
} else {
// max delta PCR 0.1s
@@ -604,15 +616,15 @@ static int mpegts_write_header(AVFormatContext *s)

// output a PCR as soon as possible
service->pcr_packet_count = service->pcr_packet_period;
ts->pat_packet_count = ts->pat_packet_period-1;
ts->sdt_packet_count = ts->sdt_packet_period-1;
ts->pat_packet_count = ts->pat_packet_period - 1;
ts->sdt_packet_count = ts->sdt_packet_period - 1;

if (ts->mux_rate == 1)
av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
else
av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
av_log(s, AV_LOG_VERBOSE, "pcr every %d pkts, "
"sdt every %d, pat/pmt every %d pkts\n",
av_log(s, AV_LOG_VERBOSE,
"pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
service->pcr_packet_period,
ts->sdt_packet_period, ts->pat_packet_period);

@@ -620,11 +632,11 @@ static int mpegts_write_header(AVFormatContext *s)

return 0;

fail:
fail:
av_free(pids);
for(i = 0;i < s->nb_streams; i++) {
for (i = 0; i < s->nb_streams; i++) {
MpegTSWriteStream *ts_st;
st = s->streams[i];
st = s->streams[i];
ts_st = st->priv_data;
if (ts_st) {
av_freep(&ts_st->payload);
@@ -651,9 +663,8 @@ static void retransmit_si_info(AVFormatContext *s)
if (++ts->pat_packet_count == ts->pat_packet_period) {
ts->pat_packet_count = 0;
mpegts_write_pat(s);
for(i = 0; i < ts->nb_services; i++) {
for (i = 0; i < ts->nb_services; i++)
mpegts_write_pmt(s, ts->services[i]);
}
}
}

@@ -669,9 +680,9 @@ static int write_pcr_bits(uint8_t *buf, int64_t pcr)

*buf++ = pcr_high >> 25;
*buf++ = pcr_high >> 17;
*buf++ = pcr_high >> 9;
*buf++ = pcr_high >> 1;
*buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
*buf++ = pcr_high >> 9;
*buf++ = pcr_high >> 1;
*buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
*buf++ = pcr_low;

return 6;
@@ -683,7 +694,7 @@ static void mpegts_insert_null_packet(AVFormatContext *s)
uint8_t *q;
uint8_t buf[TS_PACKET_SIZE];

q = buf;
q = buf;
*q++ = 0x47;
*q++ = 0x00 | 0x1f;
*q++ = 0xff;
@@ -700,7 +711,7 @@ static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
uint8_t *q;
uint8_t buf[TS_PACKET_SIZE];

q = buf;
q = buf;
*q++ = 0x47;
*q++ = ts_st->pid >> 8;
*q++ = ts_st->pid;
@@ -721,12 +732,12 @@ static void write_pts(uint8_t *q, int fourbits, int64_t pts)
{
int val;

val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
*q++ = val;
val = (((pts >> 15) & 0x7fff) << 1) | 1;
val = (((pts >> 15) & 0x7fff) << 1) | 1;
*q++ = val >> 8;
*q++ = val;
val = (((pts) & 0x7fff) << 1) | 1;
val = (((pts) & 0x7fff) << 1) | 1;
*q++ = val >> 8;
*q++ = val;
}
@@ -764,11 +775,10 @@ static uint8_t *get_ts_payload_start(uint8_t *pkt)
return pkt + 4;
}

/* Add a pes header to the front of payload, and segment into an integer number of
* ts packets. The final ts packet is padded using an over-sized adaptation header
* to exactly fill the last ts packet.
* NOTE: 'payload' contains a complete PES payload.
*/
/* 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. */
static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
const uint8_t *payload, int payload_size,
int64_t pts, int64_t dts, int key)
@@ -798,25 +808,26 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
}

if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE &&
(dts - get_pcr(ts, s->pb)/300) > delay) {
(dts - get_pcr(ts, s->pb) / 300) > delay) {
/* pcr insert gets priority over null packet insert */
if (write_pcr)
mpegts_insert_pcr_only(s, st);
else
mpegts_insert_null_packet(s);
continue; /* recalculate write_pcr and possibly retransmit si_info */
/* recalculate write_pcr and possibly retransmit si_info */
continue;
}

/* prepare packet header */
q = buf;
q = buf;
*q++ = 0x47;
val = (ts_st->pid >> 8);
val = (ts_st->pid >> 8);
if (is_start)
val |= 0x40;
*q++ = val;
*q++ = ts_st->pid;
*q++ = val;
*q++ = ts_st->pid;
ts_st->cc = (ts_st->cc + 1) & 0xf;
*q++ = 0x10 | ts_st->cc; // payload indicator + CC
*q++ = 0x10 | ts_st->cc; // payload indicator + CC
if (key && is_start && pts != AV_NOPTS_VALUE) {
// set Random Access for key frames
if (ts_st->pid == ts_st->service->pcr_pid)
@@ -831,7 +842,7 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
if (ts->mux_rate > 1)
pcr = get_pcr(ts, s->pb);
else
pcr = (dts - delay)*300;
pcr = (dts - delay) * 300;
if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
extend_af(buf, write_pcr_bits(q, pcr));
@@ -845,9 +856,9 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
*q++ = 0x01;
private_code = 0;
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (st->codec->codec_id == AV_CODEC_ID_DIRAC) {
if (st->codec->codec_id == AV_CODEC_ID_DIRAC)
*q++ = 0xfd;
} else
else
*q++ = 0xe0;
} else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
(st->codec->codec_id == AV_CODEC_ID_MP2 ||
@@ -856,31 +867,28 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
*q++ = 0xc0;
} else {
*q++ = 0xbd;
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
private_code = 0x20;
}
}
header_len = 0;
flags = 0;
flags = 0;
if (pts != AV_NOPTS_VALUE) {
header_len += 5;
flags |= 0x80;
flags |= 0x80;
}
if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
header_len += 5;
flags |= 0x40;
flags |= 0x40;
}
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
st->codec->codec_id == AV_CODEC_ID_DIRAC) {
/* set PES_extension_flag */
pes_extension = 1;
flags |= 0x01;
flags |= 0x01;

/*
* One byte for PES2 extension flag +
* one byte for extension length +
* one byte for extension id
*/
/* One byte for PES2 extension flag +
* one byte for extension length +
* one byte for extension id */
header_len += 3;
}
len = payload_size + header_len + 3;
@@ -890,7 +898,7 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
len = 0;
*q++ = len >> 8;
*q++ = len;
val = 0x80;
val = 0x80;
/* data alignment indicator is required for subtitle data */
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
val |= 0x04;
@@ -907,12 +915,10 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
}
if (pes_extension && st->codec->codec_id == AV_CODEC_ID_DIRAC) {
flags = 0x01; /* set PES_extension_flag_2 */
*q++ = flags;
*q++ = 0x80 | 0x01; /* marker bit + extension length */
/*
* Set the stream id extension flag bit to 0 and
* write the extended stream id
*/
*q++ = flags;
*q++ = 0x80 | 0x01; /* marker bit + extension length */
/* Set the stream ID extension flag bit to 0 and
* write the extended stream ID. */
*q++ = 0x00 | 0x60;
}
if (private_code != 0)
@@ -940,7 +946,7 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
/* add stuffing */
memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
buf[3] |= 0x20;
buf[4] = stuffing_len - 1;
buf[4] = stuffing_len - 1;
if (stuffing_len >= 2) {
buf[5] = 0x00;
memset(buf + 6, 0xff, stuffing_len - 2);
@@ -948,7 +954,7 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
}
}
memcpy(buf + TS_PACKET_SIZE - len, payload, len);
payload += len;
payload += len;
payload_size -= len;
avio_write(s->pb, buf, TS_PACKET_SIZE);
}
@@ -959,23 +965,24 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
{
AVStream *st = s->streams[pkt->stream_index];
int size = pkt->size;
uint8_t *buf= pkt->data;
uint8_t *data= NULL;
uint8_t *buf = pkt->data;
uint8_t *data = NULL;
MpegTSWrite *ts = s->priv_data;
MpegTSWriteStream *ts_st = st->priv_data;
const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE)*2;
const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE;

if (ts->reemit_pat_pmt) {
av_log(s, AV_LOG_WARNING, "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
av_log(s, AV_LOG_WARNING,
"resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
ts->reemit_pat_pmt = 0;
ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
}

if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
ts->pat_packet_count = ts->pat_packet_period - 1;
ts->sdt_packet_count = ts->sdt_packet_period - 1;
ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
}

if (pkt->pts != AV_NOPTS_VALUE)
@@ -990,7 +997,7 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
ts_st->first_pts_check = 0;

if (st->codec->codec_id == AV_CODEC_ID_H264) {
const uint8_t *p = buf, *buf_end = p+size;
const uint8_t *p = buf, *buf_end = p + size;
uint32_t state = -1;

if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) {
@@ -1006,15 +1013,15 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
(state & 0x1f) != 5 && (state & 0x1f) != 1);

if ((state & 0x1f) != 9) { // AUD NAL
data = av_malloc(pkt->size+6);
data = av_malloc(pkt->size + 6);
if (!data)
return AVERROR(ENOMEM);
memcpy(data+6, pkt->data, pkt->size);
memcpy(data + 6, pkt->data, pkt->size);
AV_WB32(data, 0x00000001);
data[4] = 0x09;
data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
buf = data;
size = pkt->size+6;
buf = data;
size = pkt->size + 6;
}
} else if (st->codec->codec_id == AV_CODEC_ID_AAC) {
if (pkt->size < 2) {
@@ -1027,13 +1034,14 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)

if (!ts_st->amux) {
av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
"and extradata missing\n");
"and extradata missing\n");
return AVERROR(EINVAL);
}

av_init_packet(&pkt2);
pkt2.data = pkt->data;
pkt2.size = pkt->size;

ret = avio_open_dyn_buf(&ts_st->amux->pb);
if (ret < 0)
return AVERROR(ENOMEM);
@@ -1045,15 +1053,16 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
av_free(data);
return ret;
}
size = avio_close_dyn_buf(ts_st->amux->pb, &data);
size = avio_close_dyn_buf(ts_st->amux->pb, &data);
ts_st->amux->pb = NULL;
buf = data;
buf = data;
}
}

if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
// for video and subtitle, write a single pes packet
mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & AV_PKT_FLAG_KEY);
mpegts_write_pes(s, st, buf, size, pts, dts,
pkt->flags & AV_PKT_FLAG_KEY);
av_free(data);
return 0;
}
@@ -1074,8 +1083,8 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
}

if (!ts_st->payload_size) {
ts_st->payload_pts = pts;
ts_st->payload_dts = dts;
ts_st->payload_pts = pts;
ts_st->payload_dts = dts;
ts_st->payload_flags = pkt->flags;
}

@@ -1092,7 +1101,7 @@ static void mpegts_write_flush(AVFormatContext *s)
int i;

/* flush current packets */
for(i = 0; i < s->nb_streams; i++) {
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data;
if (ts_st->payload_size > 0) {
@@ -1123,7 +1132,7 @@ static int mpegts_write_end(AVFormatContext *s)

mpegts_write_flush(s);

for(i = 0; i < s->nb_streams; i++) {
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data;
av_freep(&ts_st->payload);
@@ -1133,7 +1142,7 @@ static int mpegts_write_end(AVFormatContext *s)
}
}

for(i = 0; i < ts->nb_services; i++) {
for (i = 0; i < ts->nb_services; i++) {
service = ts->services[i];
av_freep(&service->provider_name);
av_freep(&service->name);
@@ -1146,52 +1155,63 @@ static int mpegts_write_end(AVFormatContext *s)

static const AVOption options[] = {
{ "mpegts_transport_stream_id", "Set transport_stream_id field.",
offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
{ .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
{ "mpegts_original_network_id", "Set original_network_id field.",
offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
{ .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
{ "mpegts_service_id", "Set service_id field.",
offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
{ .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
{ "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, {.i64 = 0x1000 }, 0x1000, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM},
offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
{ .i64 = 0x1000 }, 0x1000, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM },
{ "mpegts_start_pid", "Set the first pid.",
offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT, {.i64 = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM},
{ "muxrate", NULL, offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
{ .i64 = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM },
{ "muxrate", NULL,
offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
{ .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ "pes_payload_size", "Minimum PES packet payload in bytes",
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,
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,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
{ "resend_headers", "Reemit PAT/PMT before writing the next packet",
0, AV_OPT_TYPE_CONST, {.i64 = MPEGTS_FLAG_REEMIT_PAT_PMT}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"},
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
{ "latm", "Use LATM packetization for AAC",
0, AV_OPT_TYPE_CONST, {.i64 = MPEGTS_FLAG_AAC_LATM}, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"},
0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
// backward compatibility
{ "resend_headers", "Reemit PAT/PMT before writing the next packet",
offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ "pcr_period", "PCR retransmission time",
offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT, { .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT,
{ .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ NULL },
};

static const AVClass mpegts_muxer_class = {
.class_name = "MPEGTS muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
.class_name = "MPEGTS muxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};

AVOutputFormat ff_mpegts_muxer = {
.name = "mpegts",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
.mime_type = "video/x-mpegts",
.extensions = "ts,m2t",
.priv_data_size = sizeof(MpegTSWrite),
.audio_codec = AV_CODEC_ID_MP2,
.video_codec = AV_CODEC_ID_MPEG2VIDEO,
.write_header = mpegts_write_header,
.write_packet = mpegts_write_packet,
.write_trailer = mpegts_write_end,
.flags = AVFMT_ALLOW_FLUSH,
.priv_class = &mpegts_muxer_class,
.name = "mpegts",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
.mime_type = "video/x-mpegts",
.extensions = "ts,m2t",
.priv_data_size = sizeof(MpegTSWrite),
.audio_codec = AV_CODEC_ID_MP2,
.video_codec = AV_CODEC_ID_MPEG2VIDEO,
.write_header = mpegts_write_header,
.write_packet = mpegts_write_packet,
.write_trailer = mpegts_write_end,
.flags = AVFMT_ALLOW_FLUSH,
.priv_class = &mpegts_muxer_class,
};

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