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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-21 10:55:51 +02:00

lavc/lavf: transmit stream_id information for mpegts KLV data packets

This allows to copy information related to the stream ID from the demuxer
to the muxer, thus allowing for example to retain information related to
synchronous and asynchronous KLV data packets. This information is used
in the muxer when remuxing to distinguish the two kind of packets (if the
information is lacking, data packets are considered synchronous).

The fate reference changes are due to the use of
av_packet_merge_side_data(), which increases the size of the output
packet size, since side data is merged into the packet data.
This commit is contained in:
Stefano Sabatini 2015-11-18 19:23:03 +01:00
parent 3ba57bfe8d
commit 14f7a3d55a
8 changed files with 147 additions and 104 deletions

View File

@ -15,6 +15,9 @@ libavutil: 2015-08-28
API changes, most recent first:
2016-02-xx - xxxxxxx - lavc 57.25.100
Add AV_PKT_DATA_MPEGTS_STREAM_ID for exporting the MPEGTS stream ID.
2016-xx-xx - lavu 55.18.100
xxxxxxx audio_fifo.h - Add av_audio_fifo_peek_at().

View File

@ -1403,6 +1403,12 @@ enum AVPacketSideDataType {
* side data includes updated metadata which appeared in the stream.
*/
AV_PKT_DATA_METADATA_UPDATE,
/**
* MPEGTS stream ID, this is required to pass the stream ID
* information from the demuxer to the corresponding muxer.
*/
AV_PKT_DATA_MPEGTS_STREAM_ID,
};
#define AV_PKT_DATA_QUALITY_FACTOR AV_PKT_DATA_QUALITY_STATS //DEPRECATED

View File

@ -351,6 +351,7 @@ const char *av_packet_side_data_name(enum AVPacketSideDataType type)
case AV_PKT_DATA_WEBVTT_IDENTIFIER: return "WebVTT ID";
case AV_PKT_DATA_WEBVTT_SETTINGS: return "WebVTT Settings";
case AV_PKT_DATA_METADATA_UPDATE: return "Metadata Update";
case AV_PKT_DATA_MPEGTS_STREAM_ID: return "MPEGTS Stream ID";
}
return NULL;
}

View File

@ -30,7 +30,7 @@
#define LIBAVCODEC_VERSION_MAJOR 57
#define LIBAVCODEC_VERSION_MINOR 24
#define LIBAVCODEC_VERSION_MICRO 105
#define LIBAVCODEC_VERSION_MICRO 106
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \

View File

@ -235,6 +235,7 @@ typedef struct PESContext {
int total_size;
int pes_header_size;
int extended_stream_id;
uint8_t stream_id;
int64_t pts, dts;
int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
uint8_t header[MAX_PES_HEADER_SIZE];
@ -862,8 +863,10 @@ static void reset_pes_packet_state(PESContext *pes)
av_buffer_unref(&pes->buffer);
}
static void new_pes_packet(PESContext *pes, AVPacket *pkt)
static int new_pes_packet(PESContext *pes, AVPacket *pkt)
{
char *sd;
av_init_packet(pkt);
pkt->buf = pes->buffer;
@ -891,6 +894,13 @@ static void new_pes_packet(PESContext *pes, AVPacket *pkt)
pes->buffer = NULL;
reset_pes_packet_state(pes);
sd = av_packet_new_side_data(pkt, AV_PKT_DATA_MPEGTS_STREAM_ID, 1);
if (!sd)
return AVERROR(ENOMEM);
*sd = pes->stream_id;
return 0;
}
static uint64_t get_ts64(GetBitContext *gb, int bits)
@ -979,14 +989,16 @@ static int mpegts_push_data(MpegTSFilter *filter,
PESContext *pes = filter->u.pes_filter.opaque;
MpegTSContext *ts = pes->ts;
const uint8_t *p;
int len, code;
int ret, len, code;
if (!ts->pkt)
return 0;
if (is_start) {
if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
new_pes_packet(pes, ts->pkt);
ret = new_pes_packet(pes, ts->pkt);
if (ret < 0)
return ret;
ts->stop_parse = 1;
} else {
reset_pes_packet_state(pes);
@ -1014,6 +1026,7 @@ static int mpegts_push_data(MpegTSFilter *filter,
code = pes->header[3] | 0x100;
av_log(pes->stream, AV_LOG_TRACE, "pid=%x pes_code=%#x\n", pes->pid,
code);
pes->stream_id = pes->header[3];
if ((pes->st && pes->st->discard == AVDISCARD_ALL &&
(!pes->sub_st ||
@ -1197,7 +1210,9 @@ skip:
if (pes->buffer) {
if (pes->data_index > 0 &&
pes->data_index + buf_size > pes->total_size) {
new_pes_packet(pes, ts->pkt);
ret = new_pes_packet(pes, ts->pkt);
if (ret < 0)
return ret;
pes->total_size = MAX_PES_PAYLOAD;
pes->buffer = av_buffer_alloc(pes->total_size +
AV_INPUT_BUFFER_PADDING_SIZE);
@ -1220,7 +1235,9 @@ skip:
if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD &&
pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) {
ts->stop_parse = 1;
new_pes_packet(pes, ts->pkt);
ret = new_pes_packet(pes, ts->pkt);
if (ret < 0)
return ret;
}
}
buf_size = 0;
@ -2663,7 +2680,9 @@ static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt)
if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) {
new_pes_packet(pes, pkt);
ret = new_pes_packet(pes, pkt);
if (ret < 0)
return ret;
pes->state = MPEGTS_SKIP;
ret = 0;
break;

View File

@ -1111,7 +1111,7 @@ static uint8_t *get_ts_payload_start(uint8_t *pkt)
* 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)
int64_t pts, int64_t dts, int key, int stream_id)
{
MpegTSWriteStream *ts_st = st->priv_data;
MpegTSWrite *ts = s->priv_data;
@ -1208,6 +1208,11 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
st->codec->codec_id == AV_CODEC_ID_AC3 &&
ts->m2ts_mode) {
*q++ = 0xfd;
} else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
*q++ = stream_id != -1 ? stream_id : 0xfc;
if (stream_id == 0xbd) /* asynchronous KLV */
pts = dts = AV_NOPTS_VALUE;
} else {
*q++ = 0xbd;
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
@ -1451,6 +1456,15 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
int64_t dts = pkt->dts, pts = pkt->pts;
int opus_samples = 0;
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];
if (ts->reemit_pat_pmt) {
av_log(s, AV_LOG_WARNING,
@ -1630,7 +1644,7 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
&& (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) {
mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size,
ts_st2->payload_pts, ts_st2->payload_dts,
ts_st2->payload_flags & AV_PKT_FLAG_KEY);
ts_st2->payload_flags & AV_PKT_FLAG_KEY, stream_id);
ts_st2->payload_size = 0;
}
}
@ -1643,7 +1657,7 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
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_flags & AV_PKT_FLAG_KEY, stream_id);
ts_st->payload_size = 0;
ts_st->opus_queued_samples = 0;
}
@ -1652,7 +1666,7 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
av_assert0(!ts_st->payload_size);
// for video and subtitle, write a single pes packet
mpegts_write_pes(s, st, buf, size, pts, dts,
pkt->flags & AV_PKT_FLAG_KEY);
pkt->flags & AV_PKT_FLAG_KEY, stream_id);
ts_st->opus_queued_samples = 0;
av_free(data);
return 0;
@ -1684,7 +1698,7 @@ static void mpegts_write_flush(AVFormatContext *s)
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);
ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
ts_st->payload_size = 0;
ts_st->opus_queued_samples = 0;
}

View File

@ -1,12 +1,12 @@
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@ -20,17 +20,17 @@ audio|0|23510|0.261222|23510|0.261222|2351|0.026122|N/A|N/A|209|N/A|K
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@ -44,12 +44,12 @@ audio|0|56425|0.626944|56425|0.626944|2351|0.026122|N/A|N/A|209|N/A|K
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