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timecodestamper: Fix waiting for the first video frame in case of live video input

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This commit is contained in:
Sebastian Dröge 2020-01-10 11:33:28 +02:00
parent d7bb5b8a16
commit bbdb392abe
1 changed files with 11 additions and 5 deletions
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16
gst/timecode/gsttimecodestamper.c
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@ -1238,14 +1238,20 @@ gst_timecodestamper_transform_ip (GstBaseTransform * vfilter,
GstClockID clock_id;
GstClockTime base_time =
gst_element_get_base_time (GST_ELEMENT_CAST (timecodestamper));
GstClockTime wait_time;
/* If we have no latency yet then wait at least 8 frames durations.
* See LATENCY query handling for details. */
if (timecodestamper->latency == GST_CLOCK_TIME_NONE) {
wait_time = base_time + running_time + 8 * frame_duration;
} else {
wait_time = base_time + running_time + timecodestamper->latency;
}
GST_TRACE_OBJECT (timecodestamper,
"Waiting for clock to reach %" GST_TIME_FORMAT,
GST_TIME_ARGS (base_time + running_time +
timecodestamper->latency));
clock_id =
gst_clock_new_single_shot_id (clock,
base_time + running_time + timecodestamper->latency);
GST_TIME_ARGS (wait_time));
clock_id = gst_clock_new_single_shot_id (clock, wait_time);
timecodestamper->video_clock_id = clock_id;
g_mutex_unlock (&timecodestamper->mutex);