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decklinksink: Drop too late frames and start scheduled playback at the correct time

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This commit is contained in:
Sebastian Dröge 2014-11-28 17:31:07 +01:00
parent 5299d683ee
commit 55721c62e6
1 changed files with 36 additions and 5 deletions
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41
sys/decklink/gstdecklinksink.cpp
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@ -351,7 +351,8 @@ gst_decklink_sink_start (GstDecklinkSink * decklinksink)
}
//decklinksink->video_enabled = TRUE;
decklinksink->output->SetScheduledFrameCompletionCallback (decklinksink->callback);
decklinksink->output->
SetScheduledFrameCompletionCallback (decklinksink->callback);
sample_depth = bmdAudioSampleType16bitInteger;
ret = decklinksink->output->EnableAudioOutput (bmdAudioSampleRate48kHz,
@ -491,8 +492,12 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
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;
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);
#if 0
@ -511,8 +516,25 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
base_time = gst_element_get_base_time (GST_ELEMENT (decklinksink));
if (clock) {
if (base_time != GST_CLOCK_TIME_NONE) {
GstClockTime clock_time = gst_clock_get_time (clock);
if (base_time + running_time + running_time_duration <
gst_clock_get_time (clock)) {
GST_WARNING_OBJECT (decklinksink,
"Dropping too late frame: %" GST_TIME_FORMAT " < %" GST_TIME_FORMAT,
GST_TIME_ARGS (running_time + running_time_duration),
GST_TIME_ARGS (clock_time - base_time));
gst_object_unref (clock);
flow_ret = GST_FLOW_OK;
goto out;
}
clock_id = gst_clock_new_single_shot_id (clock, base_time + running_time);
GST_LOG_OBJECT (decklinksink,
"waiting for clock: %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT,
GST_TIME_ARGS (clock_time), GST_TIME_ARGS (base_time + running_time));
gst_clock_id_wait (clock_id, NULL);
GST_LOG_OBJECT (decklinksink, "finished waiting for clock");
gst_clock_id_unref (clock_id);
}
@ -527,6 +549,9 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
#endif
if (!decklinksink->stop) {
GST_LOG_OBJECT (decklinksink, "Scheduling frame for %" GST_TIME_FORMAT,
GST_TIME_ARGS (running_time));
ret = decklinksink->output->ScheduleVideoFrame (frame,
running_time, running_time_duration, GST_SECOND);
if (ret != S_OK) {
@ -539,7 +564,12 @@ gst_decklink_sink_videosink_chain (GstPad * pad, GstObject * parent,
decklinksink->num_frames++;
if (!decklinksink->sched_started) {
ret = decklinksink->output->StartScheduledPlayback (0, mode->fps_d, 1.0);
GST_DEBUG_OBJECT (decklinksink,
"Starting scheduled playback at %" GST_TIME_FORMAT,
GST_TIME_ARGS (running_time));
ret =
decklinksink->output->StartScheduledPlayback (running_time,
GST_SECOND, 1.0);
if (ret != S_OK) {
GST_ELEMENT_ERROR (decklinksink, STREAM, FAILED,
(NULL), ("Failed to start scheduled playback: 0x%08x", ret));
@ -817,5 +847,6 @@ Output::RenderAudioSamples (bool preroll)
return S_OK;
}
Output::~Output() {
Output::~Output ()
{
}