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dvbsuboverlay: Flush subtitles and all internal state when needed

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This commit is contained in:
Sebastian Dröge 2010-12-03 16:05:56 +01:00 committed by Edward Hervey
parent 472cace08b
commit 92109fdfbc
1 changed files with 40 additions and 16 deletions
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56
gst/dvbsuboverlay/gstdvbsuboverlay.c
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@ -169,6 +169,32 @@ _dvbsub_log_cb (GLogLevelFlags level, const gchar * fmt, va_list args,
g_free (message);
}
static void
gst_dvbsub_overlay_flush_subtitles (GstDVBSubOverlay * render)
{
DVBSubtitles *subs;
g_mutex_lock (render->dvbsub_mutex);
while ((subs = g_queue_pop_head (render->pending_subtitles))) {
dvb_subtitles_free (subs);
}
if (render->dvb_sub)
g_object_unref (render->dvb_sub);
render->dvb_sub = dvb_sub_new ();
if (!render->dvb_sub) {
GST_WARNING_OBJECT (render, "cannot create dvbsub instance");
g_assert_not_reached ();
}
{
DvbSubCallbacks dvbsub_callbacks = { &new_dvb_subtitles_cb, };
dvb_sub_set_callbacks (render->dvb_sub, &dvbsub_callbacks, render);
}
g_mutex_unlock (render->dvbsub_mutex);
}
static void
gst_dvbsub_overlay_init (GstDVBSubOverlay * render,
GstDVBSubOverlayClass * gclass)
@ -219,22 +245,12 @@ gst_dvbsub_overlay_init (GstDVBSubOverlay * render,
render->enable = TRUE;
render->dvbsub_mutex = g_mutex_new ();
gst_dvbsub_overlay_flush_subtitles (render);
gst_segment_init (&render->video_segment, GST_FORMAT_TIME);
gst_segment_init (&render->subtitle_segment, GST_FORMAT_TIME);
render->dvbsub_mutex = g_mutex_new ();
render->dvb_sub = dvb_sub_new ();
if (!render->dvb_sub) {
GST_WARNING_OBJECT (render, "cannot create dvbsub instance");
g_assert_not_reached ();
}
{
DvbSubCallbacks dvbsub_callbacks = { &new_dvb_subtitles_cb, };
dvb_sub_set_callbacks (render->dvb_sub, &dvbsub_callbacks, render);
}
GST_DEBUG_OBJECT (render, "init complete");
}
@ -313,6 +329,11 @@ gst_dvbsub_overlay_change_state (GstElement * element,
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_dvbsub_overlay_flush_subtitles (render);
gst_segment_init (&render->video_segment, GST_FORMAT_TIME);
gst_segment_init (&render->subtitle_segment, GST_FORMAT_TIME);
render->format = GST_VIDEO_FORMAT_UNKNOWN;
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
case GST_STATE_CHANGE_READY_TO_NULL:
default:
@ -353,7 +374,7 @@ gst_dvbsub_overlay_event_src (GstPad * pad, GstEvent * event)
if (flags & GST_SEEK_FLAG_FLUSH)
gst_pad_push_event (render->srcpad, gst_event_new_flush_start ());
/* FIXME: flush subtitles */
gst_dvbsub_overlay_flush_subtitles (render);
/* Seek on each sink pad */
gst_event_ref (event);
@ -848,6 +869,9 @@ gst_dvbsub_overlay_chain_video (GstPad * pad, GstBuffer * buffer)
gint64 start, stop;
GstClockTime vid_running_time;
if (overlay->format == GST_VIDEO_FORMAT_UNKNOWN)
return GST_FLOW_NOT_NEGOTIATED;
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
goto missing_timestamp;
@ -1017,14 +1041,14 @@ gst_dvbsub_overlay_event_text (GstPad * pad, GstEvent * event)
break;
}
case GST_EVENT_FLUSH_STOP:
GST_DEBUG_OBJECT (render, "stop flushing");
gst_dvbsub_overlay_flush_subtitles (render);
gst_segment_init (&render->subtitle_segment, GST_FORMAT_TIME);
gst_event_unref (event);
ret = TRUE;
break;
case GST_EVENT_FLUSH_START:
GST_DEBUG_OBJECT (render, "begin flushing");
/* FIXME: Reset subtitles queue and any other state */
gst_event_unref (event);
ret = TRUE;
break;