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dashdemux: make timestamps start from 0

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Non-live streams should timestamp buffers with a running-time starting from
0. Since we already push a 0 -> -1 segment, bring the timestamps to 0
by subtracting the initial timestamp.
This commit is contained in:
Wim Taymans 2013-03-08 15:04:48 +01:00 committed by Thiago Santos
parent 4ab58e0fb1
commit 4f9f0b84cf
2 changed files with 16 additions and 5 deletions
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20
ext/dash/gstdashdemux.c
View File

@ -1119,7 +1119,6 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
if (selected_stream) { if (selected_stream) {
GstDataQueueItem *item; GstDataQueueItem *item;
GstBuffer *buffer;
GST_DEBUG_OBJECT (demux, "Selected stream %p %d", selected_stream, GST_DEBUG_OBJECT (demux, "Selected stream %p %d", selected_stream,
selected_stream->index); selected_stream->index);
@ -1128,11 +1127,19 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
goto end; goto end;
if (G_LIKELY (GST_IS_BUFFER (item->object))) { if (G_LIKELY (GST_IS_BUFFER (item->object))) {
GstBuffer *buffer;
GstClockTime timestamp;
buffer = GST_BUFFER_CAST (item->object); buffer = GST_BUFFER_CAST (item->object);
active_stream = active_stream =
gst_mpdparser_get_active_stream_by_index (demux->client, gst_mpdparser_get_active_stream_by_index (demux->client,
selected_stream->index); selected_stream->index);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (demux->need_segment) { if (demux->need_segment) {
demux->timestamp_offset = timestamp;
/* And send a newsegment */ /* And send a newsegment */
for (iter = demux->streams; iter; iter = g_slist_next (iter)) { for (iter = demux->streams; iter; iter = g_slist_next (iter)) {
GstDashDemuxStream *stream = iter->data; GstDashDemuxStream *stream = iter->data;
@ -1143,11 +1150,14 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
} }
demux->need_segment = FALSE; demux->need_segment = FALSE;
} }
/* make timestamp start from 0 by subtracting the offset */
timestamp -= demux->timestamp_offset;
GST_BUFFER_TIMESTAMP (buffer) = timestamp;
GST_DEBUG_OBJECT (demux, GST_DEBUG_OBJECT (demux,
"Pushing fragment ts: %" GST_TIME_FORMAT " at pad %s", "Pushing fragment ts: %" GST_TIME_FORMAT " at pad %s",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)), GST_TIME_ARGS (timestamp), GST_PAD_NAME (selected_stream->pad));
GST_PAD_NAME (selected_stream->pad));
#if 0 #if 0
GST_DEBUG_OBJECT (demux, GST_DEBUG_OBJECT (demux,
"Pushing fragment %p #%d (stream %i) ts:%" GST_TIME_FORMAT " dur:%" "Pushing fragment %p #%d (stream %i) ts:%" GST_TIME_FORMAT " dur:%"
@ -1157,8 +1167,8 @@ gst_dash_demux_stream_loop (GstDashDemux * demux)
GST_DEBUG_PAD_NAME (selected_stream->pad)); GST_DEBUG_PAD_NAME (selected_stream->pad));
#endif #endif
ret = gst_pad_push (selected_stream->pad, gst_buffer_ref (buffer)); ret = gst_pad_push (selected_stream->pad, gst_buffer_ref (buffer));
gst_segment_set_last_stop (&demux->segment, GST_FORMAT_TIME, gst_segment_set_last_stop (&demux->segment, GST_FORMAT_TIME, timestamp);
GST_BUFFER_TIMESTAMP (buffer));
item->destroy (item); item->destroy (item);
if ((ret != GST_FLOW_OK) && (active_stream if ((ret != GST_FLOW_OK) && (active_stream
&& active_stream->mimeType == GST_STREAM_VIDEO)) && active_stream->mimeType == GST_STREAM_VIDEO))

1
ext/dash/gstdashdemux.h
View File

@ -112,6 +112,7 @@ struct _GstDashDemux
GstSegment segment; GstSegment segment;
gboolean need_segment; gboolean need_segment;
GstClockTime timestamp_offset;
GstBuffer *manifest; GstBuffer *manifest;
GstUriDownloader *downloader; GstUriDownloader *downloader;