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decklinksink: Schedule video frames according to their timestamps, not according to a frame counter

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This commit is contained in:
Sebastian Dröge 2014-11-14 10:58:53 +01:00
parent b4695f60e5
commit d191fb4476
2 changed files with 30 additions and 1 deletions
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30
sys/decklink/gstdecklinksink.cpp
View file

@ -413,6 +413,8 @@ gst_decklink_sink_change_state (GstElement * element, GstStateChange transition)
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_segment_init (&decklinksink->audio_segment, GST_FORMAT_TIME);
gst_segment_init (&decklinksink->video_segment, GST_FORMAT_TIME);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
@ -449,6 +451,9 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
GstFlowReturn flow_ret;
const GstDecklinkMode *mode;
HRESULT ret;
GstClockTime timestamp, duration;
GstClockTime running_time;
GstClockTime running_time_duration;
decklinksink = GST_DECKLINK_SINK (parent);
@ -478,6 +483,13 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
frame->GetBytes (&data);
gst_buffer_extract (buffer, 0, data, gst_buffer_get_size (buffer));
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
if (duration == GST_CLOCK_TIME_NONE) {
duration = gst_util_uint64_scale_int (GST_SECOND, mode->fps_d, mode->fps_n);
}
running_time = gst_segment_to_running_time (&decklinksink->video_segment, GST_FORMAT_TIME, timestamp);
running_time_duration = gst_segment_to_running_time (&decklinksink->video_segment, GST_FORMAT_TIME, timestamp + duration) - running_time;
gst_buffer_unref (buffer);
g_mutex_lock (&decklinksink->mutex);
@ -495,7 +507,7 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
if (!decklinksink->stop) {
ret = decklinksink->output->ScheduleVideoFrame (frame,
decklinksink->num_frames * mode->fps_d, mode->fps_d, mode->fps_n);
running_time, running_time_duration, GST_SECOND);
if (ret != S_OK) {
GST_ELEMENT_ERROR (decklinksink, STREAM, FAILED,
(NULL), ("Failed to schedule frame: 0x%08x", ret));
@ -571,6 +583,14 @@ gst_decklink_sink_videosink_event (GstPad * pad, GstObject * parent,
}
res = gst_pad_event_default (pad, parent, event);
break;
case GST_EVENT_SEGMENT:
gst_event_copy_segment (event, &decklinksink->video_segment);
res = gst_pad_event_default (pad, parent, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_segment_init (&decklinksink->video_segment, GST_FORMAT_TIME);
res = gst_pad_event_default (pad, parent, event);
break;
default:
res = gst_pad_event_default (pad, parent, event);
break;
@ -665,6 +685,14 @@ gst_decklink_sink_audiosink_event (GstPad * pad, GstObject * parent,
decklinksink->audio_seqnum = gst_event_get_seqnum (event);
res = gst_pad_event_default (pad, parent, event);
break;
case GST_EVENT_SEGMENT:
gst_event_copy_segment (event, &decklinksink->audio_segment);
res = gst_pad_event_default (pad, parent, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_segment_init (&decklinksink->audio_segment, GST_FORMAT_TIME);
res = gst_pad_event_default (pad, parent, event);
break;
default:
res = gst_pad_event_default (pad, parent, event);
break;

1
sys/decklink/gstdecklinksink.h
View file

@ -70,6 +70,7 @@ struct _GstDecklinkSink
gboolean audio_eos;
int video_seqnum;
int audio_seqnum;
GstSegment audio_segment, video_segment;
IDeckLink *decklink;
IDeckLinkOutput *output;