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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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tsdemux: Use incoming timestamps in live mode
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parent
8f433e1677
commit
8b73baeced
2 changed files with 58 additions and 12 deletions
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@ -310,6 +310,7 @@ gst_ts_demux_init (GstTSDemux * demux, GstTSDemuxClass * klass)
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demux->need_newsegment = TRUE;
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demux->program_number = -1;
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demux->duration = GST_CLOCK_TIME_NONE;
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demux->pts_delta = GST_CLOCK_TIME_NONE;
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GST_MPEGTS_BASE (demux)->stream_size = sizeof (TSDemuxStream);
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gst_segment_init (&demux->segment, GST_FORMAT_TIME);
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demux->first_pcr = (TSPcrOffset) {
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@ -333,6 +334,7 @@ gst_ts_demux_reset (MpegTSBase * base)
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demux->need_newsegment = TRUE;
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demux->program_number = -1;
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demux->duration = GST_CLOCK_TIME_NONE;
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demux->pts_delta = GST_CLOCK_TIME_NONE;
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gst_segment_init (&demux->segment, GST_FORMAT_TIME);
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demux->first_pcr = (TSPcrOffset) {
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GST_CLOCK_TIME_NONE, 0, 0};
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@ -2039,9 +2041,11 @@ gst_ts_demux_parse_pes_header (GstTSDemux * demux, TSDemuxStream * stream)
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guint32 length;
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guint64 bufferoffset;
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PESParsingResult parseres;
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GstClockTime origts;
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data = GST_BUFFER_DATA (stream->pendingbuffers[0]);
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length = GST_BUFFER_SIZE (stream->pendingbuffers[0]);
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origts = GST_BUFFER_TIMESTAMP (stream->pendingbuffers[0]);
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bufferoffset = GST_BUFFER_OFFSET (stream->pendingbuffers[0]);
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GST_MEMDUMP ("Header buffer", data, MIN (length, 32));
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@ -2081,8 +2085,24 @@ gst_ts_demux_parse_pes_header (GstTSDemux * demux, TSDemuxStream * stream)
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time = calc_gsttime_from_pts (&demux->index_pcr, pts);
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#endif
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GST_DEBUG_OBJECT (base, "stream PTS %" GST_TIME_FORMAT,
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GST_TIME_ARGS (stream->pts));
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GST_DEBUG_OBJECT (base,
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"stream PTS %" GST_TIME_FORMAT " DTS %" GST_TIME_FORMAT,
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GST_TIME_ARGS (stream->pts),
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GST_TIME_ARGS (MPEGTIME_TO_GSTTIME (header.DTS)));
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/* FIXME : This will only work if the PES header is contained
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* at the beginning of an incoming GstBuffer */
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if (base->upstream_live && GST_CLOCK_TIME_IS_VALID (origts)
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&& !GST_CLOCK_TIME_IS_VALID (demux->pts_delta)) {
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if (header.DTS != -1)
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demux->pts_delta = MPEGTIME_TO_GSTTIME (header.DTS) - origts;
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else
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demux->pts_delta = stream->pts - origts;
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GST_DEBUG_OBJECT (base, "buffer timestamp %" GST_TIME_FORMAT,
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GST_TIME_ARGS (origts));
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GST_DEBUG_OBJECT (base, "delta %" GST_TIME_FORMAT,
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GST_TIME_ARGS (demux->pts_delta));
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}
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/* safe default if insufficient upstream info */
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if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (base->in_gap) &&
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@ -2112,8 +2132,16 @@ gst_ts_demux_parse_pes_header (GstTSDemux * demux, TSDemuxStream * stream)
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if (!GST_CLOCK_TIME_IS_VALID (base->in_gap))
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base->in_gap = 0;
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GST_BUFFER_TIMESTAMP (stream->pendingbuffers[0]) =
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stream->pts + base->in_gap;
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if (base->upstream_live) {
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if (GST_CLOCK_TIME_IS_VALID (demux->pts_delta))
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GST_BUFFER_TIMESTAMP (stream->pendingbuffers[0]) =
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stream->pts - demux->pts_delta;
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else
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GST_BUFFER_TIMESTAMP (stream->pendingbuffers[0]) = GST_CLOCK_TIME_NONE;
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} else
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GST_BUFFER_TIMESTAMP (stream->pendingbuffers[0]) = stream->pts + base->in_gap;
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GST_DEBUG ("buf %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (stream->pendingbuffers[0])));
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}
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/* Remove PES headers */
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@ -2250,8 +2278,10 @@ calculate_and_push_newsegment (GstTSDemux * demux, TSDemuxStream * stream)
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start = base->segment.start;
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stop = base->segment.stop;
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}
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/* Shift the start depending on our position in the stream */
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start += firstpts + base->in_gap - base->first_buf_ts;
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if (!base->upstream_live) {
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/* Shift the start depending on our position in the stream */
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start += firstpts + base->in_gap - base->first_buf_ts;
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}
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position = start;
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} else {
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/* pull mode */
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@ -2289,10 +2319,12 @@ gst_ts_demux_push_pending_data (GstTSDemux * demux, TSDemuxStream * stream)
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{
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GstFlowReturn res = GST_FLOW_OK;
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MpegTSBaseStream *bs = (MpegTSBaseStream *) stream;
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/* MpegTSBase *base = (MpegTSBase*) demux; */
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GstBuffer *firstbuffer = NULL;
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GST_DEBUG ("stream:%p, pid:0x%04x stream_type:%d state:%d pad:%s:%s",
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stream, bs->pid, bs->stream_type, stream->state,
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GST_DEBUG_PAD_NAME (stream->pad));
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GST_DEBUG_OBJECT (stream->pad,
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"stream:%p, pid:0x%04x stream_type:%d state:%d", stream, bs->pid,
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bs->stream_type, stream->state);
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if (G_UNLIKELY (stream->current == NULL)) {
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GST_LOG ("stream->current == NULL");
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@ -2319,15 +2351,25 @@ gst_ts_demux_push_pending_data (GstTSDemux * demux, TSDemuxStream * stream)
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calculate_and_push_newsegment (demux, stream);
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/* We have a confirmed buffer, let's push it out */
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GST_LOG ("Putting pending data into GstBufferList");
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GST_LOG_OBJECT (stream->pad, "Putting pending data into GstBufferList");
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stream->currentlist = g_list_reverse (stream->currentlist);
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gst_buffer_list_iterator_add_list (stream->currentit, stream->currentlist);
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gst_buffer_list_iterator_free (stream->currentit);
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firstbuffer = gst_buffer_list_get (stream->current, 0, 0);
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GST_DEBUG_OBJECT (stream->pad,
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"delta %" GST_TIME_FORMAT " stream->pts %" GST_TIME_FORMAT,
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GST_TIME_ARGS (demux->pts_delta), GST_TIME_ARGS (stream->pts));
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if (GST_CLOCK_TIME_IS_VALID (demux->pts_delta)
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&& GST_CLOCK_TIME_IS_VALID (stream->pts)
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&& !GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (firstbuffer))) {
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GST_BUFFER_TIMESTAMP (firstbuffer) = stream->pts - demux->pts_delta;
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}
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GST_DEBUG_OBJECT (stream->pad,
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"Pushing buffer list with timestamp: %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (gst_buffer_list_get
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(stream->current, 0, 0))));
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (firstbuffer)));
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res = gst_pad_push_list (stream->pad, stream->current);
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GST_DEBUG_OBJECT (stream->pad, "Returned %s", gst_flow_get_name (res));
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@ -81,6 +81,10 @@ struct _GstTSDemux
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TSPcrOffset last_pcr;
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TSPcrOffset cur_pcr;
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TSPcrOffset index_pcr;
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/* LIVE MODE ONLY */
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/* Delta between incoming ts and PTS */
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GstClockTime pts_delta;
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};
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struct _GstTSDemuxClass
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