#include "libavutil/bswap.h"
#include "libavutil/crc.h"
+#include "libavutil/dict.h"
+#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavcodec/mpegvideo.h"
#include "avformat.h"
} MpegTSService;
typedef struct MpegTSWrite {
+ const AVClass *av_class;
MpegTSSection pat; /* MPEG2 pat table */
MpegTSSection sdt; /* MPEG2 sdt table context */
MpegTSService **services;
int tsid;
int64_t first_pcr;
int mux_rate; ///< set to 1 when VBR
+ int pes_payload_size;
int transport_stream_id;
int original_network_id;
int start_pid;
} MpegTSWrite;
+/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
+#define DEFAULT_PES_HEADER_FREQ 16
+#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
+
static const AVOption options[] = {
{ "mpegts_transport_stream_id", "Set transport_stream_id field.",
- offsetof(MpegTSWrite, transport_stream_id), FF_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
+ offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_original_network_id", "Set original_network_id field.",
- offsetof(MpegTSWrite, original_network_id), FF_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
+ offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_service_id", "Set service_id field.",
- offsetof(MpegTSWrite, service_id), FF_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
+ offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
- offsetof(MpegTSWrite, pmt_start_pid), FF_OPT_TYPE_INT, {.dbl = 0x1000 }, 0x1000, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM},
+ offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, {.dbl = 0x1000 }, 0x1000, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_start_pid", "Set the first pid.",
- offsetof(MpegTSWrite, start_pid), FF_OPT_TYPE_INT, {.dbl = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM},
+ offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT, {.dbl = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM},
+ { "muxrate", NULL, offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, {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, {DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL },
};
#define DEFAULT_PROVIDER_NAME "Libav"
#define DEFAULT_SERVICE_NAME "Service01"
-/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
-#define DEFAULT_PES_HEADER_FREQ 16
-#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
-
/* we retransmit the SI info at this rate */
#define SDT_RETRANS_TIME 500
#define PAT_RETRANS_TIME 100
struct MpegTSService *service;
int pid; /* stream associated pid */
int cc;
- int payload_index;
+ int payload_size;
int first_pts_check; ///< first pts check needed
int64_t payload_pts;
int64_t payload_dts;
- uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE];
+ int payload_flags;
+ uint8_t *payload;
ADTSContext *adts;
} MpegTSWriteStream;
for(i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data;
- AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL,0);
+ AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
switch(st->codec->codec_id) {
case CODEC_ID_MPEG1VIDEO:
case CODEC_ID_MPEG2VIDEO:
MpegTSWriteStream *ts_st;
MpegTSService *service;
AVStream *st, *pcr_st = NULL;
- AVMetadataTag *title, *provider;
+ AVDictionaryEntry *title, *provider;
int i, j;
const char *service_name;
const char *provider_name;
int *pids;
+ // round up to a whole number of TS packets
+ ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
+
ts->tsid = ts->transport_stream_id;
ts->onid = ts->original_network_id;
/* allocate a single DVB service */
- title = av_metadata_get(s->metadata, "service_name", NULL, 0);
+ title = av_dict_get(s->metadata, "service_name", NULL, 0);
if (!title)
- title = av_metadata_get(s->metadata, "title", NULL, 0);
+ title = av_dict_get(s->metadata, "title", NULL, 0);
service_name = title ? title->value : DEFAULT_SERVICE_NAME;
- provider = av_metadata_get(s->metadata, "service_provider", NULL, 0);
+ 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->pmt.write_packet = section_write_packet;
/* assign pids to each stream */
for(i = 0;i < s->nb_streams; i++) {
st = s->streams[i];
- av_set_pts_info(st, 33, 1, 90000);
+ avpriv_set_pts_info(st, 33, 1, 90000);
ts_st = av_mallocz(sizeof(MpegTSWriteStream));
if (!ts_st)
goto fail;
st->priv_data = ts_st;
+ ts_st->payload = av_mallocz(ts->pes_payload_size);
+ if (!ts_st->payload)
+ goto fail;
ts_st->service = service;
/* MPEG pid values < 16 are reserved. Applications which set st->id in
* this range are assigned a calculated pid. */
st->codec->extradata_size > 0) {
ts_st->adts = av_mallocz(sizeof(*ts_st->adts));
if (!ts_st->adts)
- return AVERROR(ENOMEM);
+ goto fail;
if (ff_adts_decode_extradata(s, ts_st->adts, st->codec->extradata,
st->codec->extradata_size) < 0)
- return -1;
+ goto fail;
}
}
service->pcr_pid = ts_st->pid;
}
- ts->mux_rate = s->mux_rate ? s->mux_rate : 1;
+#if FF_API_MUXRATE
+ if (s->mux_rate)
+ ts->mux_rate = s->mux_rate;
+#endif
if (ts->mux_rate > 1) {
service->pcr_packet_period = (ts->mux_rate * PCR_RETRANS_TIME) /
fail:
av_free(pids);
for(i = 0;i < s->nb_streams; i++) {
+ MpegTSWriteStream *ts_st;
st = s->streams[i];
+ ts_st = st->priv_data;
+ if (ts_st) {
+ av_freep(&ts_st->payload);
+ av_freep(&ts_st->adts);
+ }
av_freep(&st->priv_data);
}
return -1;
ts->first_pcr;
}
-static uint8_t* write_pcr_bits(uint8_t *buf, int64_t pcr)
+static int write_pcr_bits(uint8_t *buf, int64_t pcr)
{
int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
*buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
*buf++ = pcr_low;
- return buf;
+ return 6;
}
/* Write a single null transport stream packet */
*q++ = 0x10; /* Adaptation flags: PCR present */
/* PCR coded into 6 bytes */
- q = write_pcr_bits(q, get_pcr(ts, s->pb));
+ q += write_pcr_bits(q, get_pcr(ts, s->pb));
/* stuffing bytes */
memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
*q++ = val;
}
+/* 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
+ assert(flag);
+
+ 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
+ assert(pkt[3] & 0x20);
+ 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;
+}
+
/* 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.
*/
static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
const uint8_t *payload, int payload_size,
- int64_t pts, int64_t dts)
+ int64_t pts, int64_t dts, int key)
{
MpegTSWriteStream *ts_st = st->priv_data;
MpegTSWrite *ts = s->priv_data;
*q++ = val;
*q++ = ts_st->pid;
ts_st->cc = (ts_st->cc + 1) & 0xf;
- *q++ = 0x10 | ts_st->cc | (write_pcr ? 0x20 : 0);
+ *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)
+ write_pcr = 1;
+ set_af_flag(buf, 0x40);
+ q = get_ts_payload_start(buf);
+ }
if (write_pcr) {
+ set_af_flag(buf, 0x10);
+ q = get_ts_payload_start(buf);
// add 11, pcr references the last byte of program clock reference base
if (ts->mux_rate > 1)
pcr = get_pcr(ts, s->pb);
pcr = (dts - delay)*300;
if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
- *q++ = 7; /* AFC length */
- *q++ = 0x10; /* flags: PCR present */
- q = write_pcr_bits(q, pcr);
+ extend_af(buf, write_pcr_bits(q, pcr));
+ q = get_ts_payload_start(buf);
}
if (is_start) {
int pes_extension = 0;
int size = pkt->size;
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;
int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE;
uint32_t state = -1;
if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) {
- av_log(s, AV_LOG_ERROR, "h264 bitstream malformated, "
+ av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
"no startcode found, use -vbsf h264_mp4toannexb\n");
return -1;
}
do {
- p = ff_find_start_code(p, buf_end, &state);
+ p = avpriv_mpv_find_start_code(p, buf_end, &state);
//av_log(s, AV_LOG_INFO, "nal %d\n", state & 0x1f);
} while (p < buf_end && (state & 0x1f) != 9 &&
(state & 0x1f) != 5 && (state & 0x1f) != 1);
return -1;
if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
ADTSContext *adts = ts_st->adts;
- int new_size;
+ int new_size, err;
if (!adts) {
av_log(s, AV_LOG_ERROR, "aac bitstream not in adts format "
"and extradata missing\n");
data = av_malloc(new_size);
if (!data)
return AVERROR(ENOMEM);
- ff_adts_write_frame_header(adts, data, pkt->size, adts->pce_size);
+ err = ff_adts_write_frame_header(adts, data, pkt->size,
+ adts->pce_size);
+ if (err < 0) {
+ av_free(data);
+ return err;
+ }
if (adts->pce_size) {
memcpy(data+ADTS_HEADER_SIZE, adts->pce_data, adts->pce_size);
adts->pce_size = 0;
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);
+ mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & AV_PKT_FLAG_KEY);
av_free(data);
return 0;
}
- if (ts_st->payload_index + size > DEFAULT_PES_PAYLOAD_SIZE) {
- mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
- ts_st->payload_pts, ts_st->payload_dts);
- ts_st->payload_index = 0;
+ if (ts_st->payload_size + size > ts->pes_payload_size) {
+ if (ts_st->payload_size) {
+ mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
+ ts_st->payload_pts, ts_st->payload_dts,
+ ts_st->payload_flags & AV_PKT_FLAG_KEY);
+ ts_st->payload_size = 0;
+ }
+ if (size > ts->pes_payload_size) {
+ mpegts_write_pes(s, st, buf, size, pts, dts,
+ pkt->flags & AV_PKT_FLAG_KEY);
+ av_free(data);
+ return 0;
+ }
}
- if (!ts_st->payload_index) {
+ if (!ts_st->payload_size) {
ts_st->payload_pts = pts;
ts_st->payload_dts = dts;
+ ts_st->payload_flags = pkt->flags;
}
- memcpy(ts_st->payload + ts_st->payload_index, buf, size);
- ts_st->payload_index += size;
+ memcpy(ts_st->payload + ts_st->payload_size, buf, size);
+ ts_st->payload_size += size;
av_free(data);
for(i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
ts_st = st->priv_data;
- if (ts_st->payload_index > 0) {
- mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
- ts_st->payload_pts, ts_st->payload_dts);
+ if (ts_st->payload_size > 0) {
+ mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
+ ts_st->payload_pts, ts_st->payload_dts,
+ ts_st->payload_flags & AV_PKT_FLAG_KEY);
}
+ av_freep(&ts_st->payload);
av_freep(&ts_st->adts);
}
avio_flush(s->pb);
}
AVOutputFormat ff_mpegts_muxer = {
- "mpegts",
- NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
- "video/x-mpegts",
- "ts,m2t",
- sizeof(MpegTSWrite),
- CODEC_ID_MP2,
- CODEC_ID_MPEG2VIDEO,
- mpegts_write_header,
- mpegts_write_packet,
- mpegts_write_end,
+ .name = "mpegts",
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
+ .mime_type = "video/x-mpegts",
+ .extensions = "ts,m2t",
+ .priv_data_size = sizeof(MpegTSWrite),
+ .audio_codec = CODEC_ID_MP2,
+ .video_codec = CODEC_ID_MPEG2VIDEO,
+ .write_header = mpegts_write_header,
+ .write_packet = mpegts_write_packet,
+ .write_trailer = mpegts_write_end,
.priv_class = &mpegts_muxer_class,
};
projects / ffmpeg / blobdiff