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gstplaysink: Properly reset chain when receiving a custom flush event.

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=638168

Conflicts:

	gst/playback/gstplaysink.c
This commit is contained in:
Andre Moreira Magalhaes (andrunko) 2012-05-16 10:41:41 -03:00 committed by Thiago Santos
parent 0dfb331cfd
commit bd5cfff9de
1 changed files with 166 additions and 0 deletions
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166
gst/playback/gstplaysink.c
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@ -256,6 +256,9 @@ struct _GstPlaySink
GstColorBalance *colorbalance_element;
GList *colorbalance_channels; /* CONTRAST, BRIGHTNESS, HUE, SATURATION */
gint colorbalance_values[4];
GstSegment text_segment;
gboolean text_flush;
};
struct _GstPlaySinkClass
@ -346,6 +349,8 @@ static void notify_mute_cb (GObject * object, GParamSpec * pspec,
static void update_av_offset (GstPlaySink * playsink);
static GQuark _playsink_reset_segment_event_marker_id = 0;
/* static guint gst_play_sink_signals[LAST_SIGNAL] = { 0 }; */
static void gst_play_sink_overlay_init (gpointer g_iface,
@ -572,6 +577,9 @@ gst_play_sink_class_init (GstPlaySinkClass * klass)
klass->reconfigure = GST_DEBUG_FUNCPTR (gst_play_sink_reconfigure);
klass->convert_sample = GST_DEBUG_FUNCPTR (gst_play_sink_convert_sample);
_playsink_reset_segment_event_marker_id =
g_quark_from_static_string ("gst-playsink-reset-segment-event-marker");
}
static void
@ -1834,6 +1842,152 @@ setup_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async)
return TRUE;
}
static void
_generate_update_newsegment_event (GstPad * pad, GstSegment * segment,
GstEvent ** event1)
{
GstEvent *event;
GstStructure *structure;
event = gst_event_new_segment (segment);
structure = gst_event_writable_structure (event);
gst_structure_id_set (structure,
_playsink_reset_segment_event_marker_id, G_TYPE_BOOLEAN, TRUE, NULL);
*event1 = event;
}
static gboolean
gst_play_sink_text_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstPlaySink *playsink = GST_PLAY_SINK_CAST (gst_object_get_parent (parent));
gboolean ret;
const GstStructure *structure = gst_event_get_structure (event);
if (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_DOWNSTREAM_OOB &&
structure
&& strcmp (gst_structure_get_name (structure),
"subtitleoverlay-flush-subtitle") == 0) {
GST_DEBUG_OBJECT (pad,
"Custom subtitle flush event received, marking to flush text");
GST_PLAY_SINK_LOCK (playsink);
playsink->text_flush = TRUE;
GST_PLAY_SINK_UNLOCK (playsink);
} else if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
GST_DEBUG_OBJECT (pad,
"Resetting text segment because of flush-stop event");
gst_segment_init (&playsink->text_segment, GST_FORMAT_UNDEFINED);
}
ret = gst_proxy_pad_event_default (pad, parent, gst_event_ref (event));
if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
const GstSegment *segment;
gst_event_parse_segment (event, &segment);
GST_DEBUG_OBJECT (pad, "Segment event: %" GST_SEGMENT_FORMAT, segment);
if (playsink->text_segment.format != segment->format) {
GST_DEBUG_OBJECT (pad, "Text segment format changed: %s -> %s",
gst_format_get_name (playsink->text_segment.format),
gst_format_get_name (segment->format));
}
GST_DEBUG_OBJECT (pad, "Old text segment: %" GST_SEGMENT_FORMAT,
&playsink->text_segment);
gst_segment_copy_into (segment, &playsink->text_segment);
GST_DEBUG_OBJECT (pad, "New text segment: %" GST_SEGMENT_FORMAT,
&playsink->text_segment);
}
gst_event_unref (event);
gst_object_unref (playsink);
return ret;
}
static GstFlowReturn
gst_play_sink_text_sink_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer)
{
GstBin *tbin = GST_BIN_CAST (gst_pad_get_parent (pad));
GstPlaySink *playsink = GST_PLAY_SINK_CAST (gst_pad_get_parent (tbin));
GstFlowReturn ret = gst_proxy_pad_chain_default (pad, parent, buffer);
if (ret == GST_FLOW_FLUSHING && playsink->text_flush) {
GstEvent *event;
GstSegment *text_segment;
GstStructure *structure;
GST_DEBUG_OBJECT (pad,
"Ignoring wrong state due to flush text being marked");
GST_PLAY_SINK_LOCK (playsink);
playsink->text_flush = FALSE;
text_segment = gst_segment_copy (&playsink->text_segment);
GST_PLAY_SINK_UNLOCK (playsink);
/* make queue drop all cached data.
* This event will be dropped on the src pad. */
event = gst_event_new_flush_stop (TRUE);
structure = gst_event_writable_structure (event);
gst_structure_id_set (structure,
_playsink_reset_segment_event_marker_id, G_TYPE_BOOLEAN, TRUE, NULL);
GST_DEBUG_OBJECT (playsink,
"Pushing flush-stop event with reset segment marker set: %"
GST_PTR_FORMAT, structure);
gst_pad_send_event (pad, event);
/* Re-sync queue segment info after flush-stop.
* This event will be dropped on the src pad. */
if (text_segment->format != GST_FORMAT_UNDEFINED) {
GstEvent *event1;
_generate_update_newsegment_event (pad, text_segment, &event1);
GST_DEBUG_OBJECT (playsink,
"Pushing segment event with reset "
"segment marker set: %" GST_PTR_FORMAT, event1);
gst_pad_send_event (pad, event1);
}
gst_segment_free (text_segment);
ret = GST_FLOW_OK;
}
gst_object_unref (playsink);
gst_object_unref (tbin);
return ret;
}
static gboolean
gst_play_sink_text_src_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
gboolean ret;
const GstStructure *structure;
GST_DEBUG_OBJECT (pad, "Got event %" GST_PTR_FORMAT, event);
structure = gst_event_get_structure (event);
if (structure &&
gst_structure_id_has_field (structure,
_playsink_reset_segment_event_marker_id)) {
/* the events marked with a reset segment marker
* are sent internally to reset the queue and
* must be dropped here */
GST_DEBUG_OBJECT (pad, "Dropping event with reset "
"segment marker set: %" GST_PTR_FORMAT, event);
ret = TRUE;
goto out;
}
ret = gst_proxy_pad_event_default (pad, parent, gst_event_ref (event));
out:
gst_event_unref (event);
return ret;
}
/* make an element for playback of video with subtitles embedded.
* Only used for *raw* video streams.
*
@ -2027,11 +2181,21 @@ gen_text_chain (GstPlaySink * playsink)
if (textsinkpad) {
chain->textsinkpad = gst_ghost_pad_new ("text_sink", textsinkpad);
gst_object_unref (textsinkpad);
gst_pad_set_event_function (chain->textsinkpad,
GST_DEBUG_FUNCPTR (gst_play_sink_text_sink_event));
gst_pad_set_chain_function (chain->textsinkpad,
GST_DEBUG_FUNCPTR (gst_play_sink_text_sink_chain));
gst_element_add_pad (chain->chain.bin, chain->textsinkpad);
}
if (srcpad) {
chain->srcpad = gst_ghost_pad_new ("src", srcpad);
gst_object_unref (srcpad);
gst_pad_set_event_function (chain->srcpad,
GST_DEBUG_FUNCPTR (gst_play_sink_text_src_event));
gst_element_add_pad (chain->chain.bin, chain->srcpad);
}
@ -3954,6 +4118,8 @@ gst_play_sink_change_state (GstElement * element, GstStateChange transition)
playsink = GST_PLAY_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_segment_init (&playsink->text_segment, GST_FORMAT_UNDEFINED);
playsink->need_async_start = TRUE;
/* we want to go async to PAUSED until we managed to configure and add the
* sinks */