2 * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * SECTION:element-subtitleoverlay
23 * #GstBin that auto-magically overlays a video stream with subtitles by
24 * autoplugging the required elements.
26 * It supports raw, timestamped text, different textual subtitle formats and
27 * DVD subpicture subtitles.
30 * <title>Examples</title>
32 * gst-launch -v filesrc location=test.mkv ! matroskademux name=demux ! "video/x-h264" ! queue2 ! decodebin2 ! subtitleoverlay name=overlay ! ffmpegcolorspace ! autovideosink demux. ! "video/x-dvd-subpicture" ! queue2 ! overlay.
33 * ]| This will play back the given Matroska file with h264 video and subpicture subtitles.
41 #include "gstsubtitleoverlay.h"
43 #include <gst/gstfilter.h>
44 #include <gst/pbutils/missing-plugins.h>
45 #include <gst/video/video.h>
48 #include "gst/glib-compat-private.h"
50 GST_DEBUG_CATEGORY_STATIC (subtitle_overlay_debug);
51 #define GST_CAT_DEFAULT subtitle_overlay_debug
53 #define IS_SUBTITLE_CHAIN_IGNORE_ERROR(flow) \
54 G_UNLIKELY (flow == GST_FLOW_ERROR || flow == GST_FLOW_NOT_NEGOTIATED)
56 #define IS_VIDEO_CHAIN_IGNORE_ERROR(flow) \
57 G_UNLIKELY (flow == GST_FLOW_ERROR)
59 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
64 static GstStaticPadTemplate video_sinktemplate =
65 GST_STATIC_PAD_TEMPLATE ("video_sink",
70 static GstStaticPadTemplate subtitle_sinktemplate =
71 GST_STATIC_PAD_TEMPLATE ("subtitle_sink",
81 PROP_SUBTITLE_ENCODING
84 GST_BOILERPLATE (GstSubtitleOverlay, gst_subtitle_overlay, GstBin,
87 static void _pad_blocked_cb (GstPad * pad, gboolean blocked,
90 static GQuark _subtitle_overlay_event_marker_id = 0;
93 do_async_start (GstSubtitleOverlay * self)
95 if (!self->do_async) {
97 gst_message_new_async_start (GST_OBJECT_CAST (self), FALSE);
99 GST_DEBUG_OBJECT (self, "Posting async-start");
100 parent_class->handle_message (GST_BIN_CAST (self), msg);
101 self->do_async = TRUE;
106 do_async_done (GstSubtitleOverlay * self)
108 if (self->do_async) {
109 GstMessage *msg = gst_message_new_async_done (GST_OBJECT_CAST (self));
111 GST_DEBUG_OBJECT (self, "Posting async-done");
112 parent_class->handle_message (GST_BIN_CAST (self), msg);
113 self->do_async = FALSE;
118 gst_subtitle_overlay_finalize (GObject * object)
120 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (object);
123 g_mutex_free (self->lock);
127 if (self->factories_lock) {
128 g_mutex_free (self->factories_lock);
129 self->factories_lock = NULL;
133 gst_plugin_feature_list_free (self->factories);
134 self->factories = NULL;
135 gst_caps_replace (&self->factory_caps, NULL);
137 if (self->font_desc) {
138 g_free (self->font_desc);
139 self->font_desc = NULL;
142 if (self->encoding) {
143 g_free (self->encoding);
144 self->encoding = NULL;
147 G_OBJECT_CLASS (parent_class)->finalize (object);
151 _is_renderer (GstElementFactory * factory)
153 const gchar *klass, *name;
155 klass = gst_element_factory_get_klass (factory);
156 name = gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory));
158 if (strstr (klass, "Overlay/Subtitle") != NULL ||
159 strstr (klass, "Overlay/SubPicture") != NULL)
161 if (strcmp (name, "textoverlay") == 0)
167 _is_parser (GstElementFactory * factory)
171 klass = gst_element_factory_get_klass (factory);
173 if (strstr (klass, "Parser/Subtitle") != NULL)
178 static const gchar *_sub_pad_names[] = { "subpicture", "subpicture_sink",
180 "subtitle_sink", "subtitle"
183 static inline gboolean
184 _is_raw_video (GstStructure * s)
188 name = gst_structure_get_name (s);
190 if (g_str_has_prefix (name, "video/x-raw-"))
196 _is_video_pad (GstPad * pad, gboolean * hw_accelerated)
198 GstPad *peer = gst_pad_get_peer (pad);
204 caps = gst_pad_get_negotiated_caps (peer);
206 caps = gst_pad_get_caps_reffed (peer);
208 gst_object_unref (peer);
210 caps = gst_pad_get_caps_reffed (pad);
214 name = gst_structure_get_name (gst_caps_get_structure (caps, 0));
215 if (g_str_has_prefix (name, "video/x-raw-")) {
218 *hw_accelerated = FALSE;
220 } else if (g_str_has_prefix (name, "video/x-surface")) {
223 *hw_accelerated = TRUE;
228 *hw_accelerated = FALSE;
231 gst_caps_unref (caps);
237 _get_sub_caps (GstElementFactory * factory)
239 const GList *templates;
241 gboolean is_parser = _is_parser (factory);
243 templates = gst_element_factory_get_static_pad_templates (factory);
244 for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
245 GstStaticPadTemplate *templ = walk->data;
247 if (templ->direction == GST_PAD_SINK && templ->presence == GST_PAD_ALWAYS) {
248 gboolean found = FALSE;
255 for (i = 0; i < G_N_ELEMENTS (_sub_pad_names); i++) {
256 if (strcmp (templ->name_template, _sub_pad_names[i]) == 0) {
263 return gst_static_caps_get (&templ->static_caps);
270 _factory_filter (GstPluginFeature * feature, GstCaps ** subcaps)
272 GstElementFactory *factory;
275 const GList *templates;
277 gboolean is_renderer;
278 GstCaps *templ_caps = NULL;
279 gboolean have_video_sink = FALSE;
281 /* we only care about element factories */
282 if (!GST_IS_ELEMENT_FACTORY (feature))
285 factory = GST_ELEMENT_FACTORY_CAST (feature);
287 /* only select elements with autoplugging rank or textoverlay */
288 name = gst_plugin_feature_get_name (feature);
289 rank = gst_plugin_feature_get_rank (feature);
290 if (strcmp ("textoverlay", name) != 0 && rank < GST_RANK_MARGINAL)
293 /* Check if it's a renderer or a parser */
294 if (_is_renderer (factory)) {
296 } else if (_is_parser (factory)) {
302 /* Check if there's a video sink in case of a renderer */
304 templates = gst_element_factory_get_static_pad_templates (factory);
305 for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
306 GstStaticPadTemplate *templ = walk->data;
308 /* we only care about the always-sink templates */
309 if (templ->direction == GST_PAD_SINK && templ->presence == GST_PAD_ALWAYS) {
310 if (strcmp (templ->name_template, "video") == 0 ||
311 strcmp (templ->name_template, "video_sink") == 0) {
312 have_video_sink = TRUE;
317 templ_caps = _get_sub_caps (factory);
319 if (is_renderer && have_video_sink && templ_caps) {
320 GST_DEBUG ("Found renderer element %s (%s) with caps %" GST_PTR_FORMAT,
321 gst_element_factory_get_longname (factory),
322 gst_plugin_feature_get_name (feature), templ_caps);
323 gst_caps_merge (*subcaps, templ_caps);
325 } else if (!is_renderer && !have_video_sink && templ_caps) {
326 GST_DEBUG ("Found parser element %s (%s) with caps %" GST_PTR_FORMAT,
327 gst_element_factory_get_longname (factory),
328 gst_plugin_feature_get_name (feature), templ_caps);
329 gst_caps_merge (*subcaps, templ_caps);
333 gst_caps_unref (templ_caps);
338 /* Call with factories_lock! */
340 gst_subtitle_overlay_update_factory_list (GstSubtitleOverlay * self)
343 || self->factories_cookie !=
344 gst_default_registry_get_feature_list_cookie ()) {
348 subcaps = gst_caps_new_empty ();
350 factories = gst_default_registry_feature_filter (
351 (GstPluginFeatureFilter) _factory_filter, FALSE, &subcaps);
352 GST_DEBUG_OBJECT (self, "Created factory caps: %" GST_PTR_FORMAT, subcaps);
353 gst_caps_replace (&self->factory_caps, subcaps);
354 gst_caps_unref (subcaps);
356 gst_plugin_feature_list_free (self->factories);
357 self->factories = factories;
358 self->factories_cookie = gst_default_registry_get_feature_list_cookie ();
361 return (self->factories != NULL);
364 G_LOCK_DEFINE_STATIC (_factory_caps);
365 static GstCaps *_factory_caps = NULL;
366 static guint32 _factory_caps_cookie = 0;
369 gst_subtitle_overlay_create_factory_caps (void)
372 GstCaps *subcaps = NULL;
374 G_LOCK (_factory_caps);
376 || _factory_caps_cookie !=
377 gst_default_registry_get_feature_list_cookie ()) {
379 gst_caps_unref (_factory_caps);
380 _factory_caps = gst_caps_new_empty ();
382 factories = gst_default_registry_feature_filter (
383 (GstPluginFeatureFilter) _factory_filter, FALSE, &_factory_caps);
384 GST_DEBUG ("Created factory caps: %" GST_PTR_FORMAT, _factory_caps);
385 gst_plugin_feature_list_free (factories);
386 _factory_caps_cookie = gst_default_registry_get_feature_list_cookie ();
388 subcaps = gst_caps_ref (_factory_caps);
389 G_UNLOCK (_factory_caps);
395 check_factory_for_caps (GstElementFactory * factory, const GstCaps * caps)
397 GstCaps *fcaps = _get_sub_caps (factory);
398 gboolean ret = (fcaps) ? gst_caps_can_intersect (fcaps, caps) : FALSE;
401 gst_caps_unref (fcaps);
404 gst_object_ref (factory);
409 gst_subtitle_overlay_get_factories_for_caps (const GList * list,
410 const GstCaps * caps)
412 const GList *walk = list;
413 GList *result = NULL;
416 GstElementFactory *factory = walk->data;
418 walk = g_list_next (walk);
420 if (check_factory_for_caps (factory, caps)) {
421 result = g_list_prepend (result, factory);
429 _sort_by_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
432 const gchar *rname1, *rname2;
434 diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
438 /* If the ranks are the same sort by name to get deterministic results */
439 rname1 = gst_plugin_feature_get_name (f1);
440 rname2 = gst_plugin_feature_get_name (f2);
442 diff = strcmp (rname1, rname2);
448 _get_sub_pad (GstElement * element)
453 for (i = 0; i < G_N_ELEMENTS (_sub_pad_names); i++) {
454 pad = gst_element_get_static_pad (element, _sub_pad_names[i]);
462 _get_video_pad (GstElement * element)
464 static const gchar *pad_names[] = { "video", "video_sink" };
468 for (i = 0; i < G_N_ELEMENTS (pad_names); i++) {
469 pad = gst_element_get_static_pad (element, pad_names[i]);
477 _create_element (GstSubtitleOverlay * self, GstElement ** element,
478 const gchar * factory_name, GstElementFactory * factory,
479 const gchar * element_name, gboolean mandatory)
483 g_assert (!factory || !factory_name);
486 elt = gst_element_factory_make (factory_name, element_name);
489 gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory));
490 elt = gst_element_factory_create (factory, element_name);
493 if (G_UNLIKELY (!elt)) {
498 gst_missing_element_message_new (GST_ELEMENT_CAST (self),
500 gst_element_post_message (GST_ELEMENT_CAST (self), msg);
503 GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL),
504 ("no '%s' plugin found", factory_name));
506 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN, (NULL),
507 ("no '%s' plugin found", factory_name));
510 GST_ELEMENT_ERROR (self, CORE, FAILED, (NULL),
511 ("can't instantiate '%s'", factory_name));
513 GST_ELEMENT_WARNING (self, CORE, FAILED, (NULL),
514 ("can't instantiate '%s'", factory_name));
521 if (G_UNLIKELY (gst_element_set_state (elt,
522 GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS)) {
523 gst_object_unref (elt);
525 GST_ELEMENT_ERROR (self, CORE, STATE_CHANGE, (NULL),
526 ("failed to set '%s' to READY", factory_name));
528 GST_WARNING_OBJECT (self, "Failed to set '%s' to READY", factory_name);
533 if (G_UNLIKELY (!gst_bin_add (GST_BIN_CAST (self), gst_object_ref (elt)))) {
534 gst_element_set_state (elt, GST_STATE_NULL);
535 gst_object_unref (elt);
537 GST_ELEMENT_ERROR (self, CORE, FAILED, (NULL),
538 ("failed to add '%s' to subtitleoverlay", factory_name));
540 GST_WARNING_OBJECT (self, "Failed to add '%s' to subtitleoverlay",
546 gst_element_sync_state_with_parent (elt);
552 _remove_element (GstSubtitleOverlay * self, GstElement ** element)
555 gst_bin_remove (GST_BIN_CAST (self), *element);
556 gst_element_set_state (*element, GST_STATE_NULL);
557 gst_object_unref (*element);
563 _generate_update_newsegment_event (GstSegment * segment, GstEvent ** event1,
571 event = gst_event_new_new_segment_full (FALSE, segment->rate,
572 segment->applied_rate, segment->format, 0, segment->accum, 0);
573 gst_structure_id_set (event->structure, _subtitle_overlay_event_marker_id,
574 G_TYPE_BOOLEAN, TRUE, NULL);
577 event = gst_event_new_new_segment_full (FALSE, segment->rate,
578 segment->applied_rate, segment->format,
579 segment->start, segment->stop, segment->time);
580 gst_structure_id_set (event->structure, _subtitle_overlay_event_marker_id,
581 G_TYPE_BOOLEAN, TRUE, NULL);
586 _setup_passthrough (GstSubtitleOverlay * self)
589 GstElement *identity;
591 GST_DEBUG_OBJECT (self, "Doing video passthrough");
593 if (self->passthrough_identity) {
594 GST_DEBUG_OBJECT (self, "Already in passthrough mode");
598 /* Unlink & destroy everything */
599 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
600 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL);
601 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad), NULL);
602 self->silent_property = NULL;
603 _remove_element (self, &self->post_colorspace);
604 _remove_element (self, &self->overlay);
605 _remove_element (self, &self->parser);
606 _remove_element (self, &self->renderer);
607 _remove_element (self, &self->pre_colorspace);
608 _remove_element (self, &self->passthrough_identity);
610 if (G_UNLIKELY (!_create_element (self, &self->passthrough_identity,
611 "identity", NULL, "passthrough-identity", TRUE))) {
615 identity = self->passthrough_identity;
616 g_object_set (G_OBJECT (identity), "silent", TRUE, "signal-handoffs", FALSE,
619 /* Set src ghostpad target */
620 src = gst_element_get_static_pad (self->passthrough_identity, "src");
621 if (G_UNLIKELY (!src)) {
622 GST_ELEMENT_ERROR (self, CORE, PAD, (NULL),
623 ("Failed to get srcpad from identity"));
627 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad),
629 GST_ELEMENT_ERROR (self, CORE, PAD, (NULL),
630 ("Failed to set srcpad target"));
631 gst_object_unref (src);
634 gst_object_unref (src);
636 sink = gst_element_get_static_pad (self->passthrough_identity, "sink");
637 if (G_UNLIKELY (!sink)) {
638 GST_ELEMENT_ERROR (self, CORE, PAD, (NULL),
639 ("Failed to get sinkpad from identity"));
643 /* Send segment to the identity. This is dropped because identity
644 * is not linked downstream yet */
645 if (self->video_segment.format != GST_FORMAT_UNDEFINED) {
646 GstEvent *event1, *event2;
648 _generate_update_newsegment_event (&self->video_segment, &event1, &event2);
649 GST_DEBUG_OBJECT (self,
650 "Pushing video accumulate newsegment event: %" GST_PTR_FORMAT,
652 GST_DEBUG_OBJECT (self,
653 "Pushing video update newsegment event: %" GST_PTR_FORMAT,
655 gst_pad_send_event (sink, event1);
656 gst_pad_send_event (sink, event2);
659 /* Link sink ghostpads to identity */
660 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
661 (self->video_sinkpad), sink))) {
662 GST_ELEMENT_ERROR (self, CORE, PAD, (NULL),
663 ("Failed to set video sinkpad target"));
664 gst_object_unref (sink);
667 gst_object_unref (sink);
669 GST_DEBUG_OBJECT (self, "Video passthrough setup successfully");
673 gst_pad_set_blocked_async_full (self->video_block_pad, FALSE,
674 _pad_blocked_cb, self, NULL);
676 if (self->subtitle_sink_blocked)
677 gst_pad_set_blocked_async_full (self->subtitle_block_pad, FALSE,
678 _pad_blocked_cb, self, NULL);
683 /* Must be called with subtitleoverlay lock! */
685 gst_subtitle_overlay_set_fps (GstSubtitleOverlay * self)
687 GObjectClass *gobject_class;
690 if (!self->parser || self->fps_d == 0)
693 gobject_class = G_OBJECT_GET_CLASS (self->parser);
694 pspec = g_object_class_find_property (gobject_class, "video-fps");
695 if (!pspec || pspec->value_type != GST_TYPE_FRACTION)
698 GST_DEBUG_OBJECT (self, "Updating video-fps property in parser");
699 g_object_set (self->parser, "video-fps", self->fps_n, self->fps_d, NULL);
703 _get_silent_property (GstElement * element, gboolean * invert)
712 GObjectClass *gobject_class;
716 gobject_class = G_OBJECT_GET_CLASS (element);
718 for (i = 0; i < G_N_ELEMENTS (properties); i++) {
719 pspec = g_object_class_find_property (gobject_class, properties[i].name);
720 if (pspec && pspec->value_type == G_TYPE_BOOLEAN) {
721 *invert = properties[i].invert;
722 return properties[i].name;
729 _has_subtitle_encoding_property (GstElement * element)
734 g_object_class_find_property (G_OBJECT_GET_CLASS (element),
735 "subtitle-encoding");
736 return (pspec && pspec->value_type == G_TYPE_STRING);
740 _has_font_desc_property (GstElement * element)
745 g_object_class_find_property (G_OBJECT_GET_CLASS (element), "font-desc");
746 return (pspec && pspec->value_type == G_TYPE_STRING);
750 _pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
752 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (user_data);
754 GList *l, *factories = NULL;
756 GST_DEBUG_OBJECT (pad, "Pad blocked: %d", blocked);
758 GST_SUBTITLE_OVERLAY_LOCK (self);
759 if (pad == self->video_block_pad)
760 self->video_sink_blocked = blocked;
761 else if (pad == self->subtitle_block_pad)
762 self->subtitle_sink_blocked = blocked;
765 GST_SUBTITLE_OVERLAY_UNLOCK (self);
769 /* Now either both or the video sink are blocked */
771 /* Get current subtitle caps */
772 subcaps = self->subcaps;
776 peer = gst_pad_get_peer (self->subtitle_sinkpad);
778 subcaps = gst_pad_get_negotiated_caps (peer);
780 subcaps = gst_pad_get_caps_reffed (peer);
781 if (!gst_caps_is_fixed (subcaps)) {
782 gst_caps_unref (subcaps);
786 gst_object_unref (peer);
788 gst_caps_replace (&self->subcaps, subcaps);
790 gst_caps_unref (subcaps);
792 GST_DEBUG_OBJECT (self, "Current subtitle caps: %" GST_PTR_FORMAT, subcaps);
794 /* If there are no subcaps but the subtitle sink is blocked upstream
795 * must behave wrong as there are no fixed caps set for the first
796 * buffer or in-order event */
797 if (G_UNLIKELY (!subcaps && self->subtitle_sink_blocked)) {
798 GST_ELEMENT_WARNING (self, CORE, NEGOTIATION, (NULL),
799 ("Subtitle sink is blocked but we have no subtitle caps"));
803 if (self->subtitle_error || (self->silent && !self->silent_property)) {
804 _setup_passthrough (self);
805 do_async_done (self);
809 /* Now do something with the caps */
810 if (subcaps && !self->subtitle_flush) {
812 gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad));
814 if (target && gst_pad_accept_caps (target, subcaps)) {
815 GST_DEBUG_OBJECT (pad, "Target accepts caps");
817 gst_object_unref (target);
820 gst_pad_set_blocked_async_full (self->video_block_pad, FALSE,
821 _pad_blocked_cb, self, NULL);
823 if (self->subtitle_sink_blocked)
824 gst_pad_set_blocked_async_full (self->subtitle_block_pad, FALSE,
825 _pad_blocked_cb, self, NULL);
828 gst_object_unref (target);
832 if (self->subtitle_sink_blocked && !self->video_sink_blocked) {
833 GST_DEBUG_OBJECT (self, "Subtitle sink blocked but video not blocked");
834 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
835 _pad_blocked_cb, self, NULL);
839 self->subtitle_flush = FALSE;
841 /* Find our factories */
842 g_mutex_lock (self->factories_lock);
843 gst_subtitle_overlay_update_factory_list (self);
846 gst_subtitle_overlay_get_factories_for_caps (self->factories, subcaps);
850 msg = gst_missing_decoder_message_new (GST_ELEMENT_CAST (self), subcaps);
851 gst_element_post_message (GST_ELEMENT_CAST (self), msg);
852 GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN, (NULL),
853 ("no suitable subtitle plugin found"));
855 self->subtitle_error = TRUE;
858 g_mutex_unlock (self->factories_lock);
861 _setup_passthrough (self);
862 do_async_done (self);
866 /* Now the interesting parts are done: subtitle overlaying! */
868 /* Sort the factories by rank */
869 factories = g_list_sort (factories, (GCompareFunc) _sort_by_ranks);
871 for (l = factories; l; l = l->next) {
872 GstElementFactory *factory = l->data;
873 gboolean is_video, is_hw, is_renderer = _is_renderer (factory);
877 /* Unlink & destroy everything */
879 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
880 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL);
881 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad),
883 self->silent_property = NULL;
884 _remove_element (self, &self->post_colorspace);
885 _remove_element (self, &self->overlay);
886 _remove_element (self, &self->parser);
887 _remove_element (self, &self->renderer);
888 _remove_element (self, &self->pre_colorspace);
889 _remove_element (self, &self->passthrough_identity);
891 GST_DEBUG_OBJECT (self, "Trying factory '%s'",
892 GST_STR_NULL (gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST
895 if (G_UNLIKELY ((is_renderer
896 && !_create_element (self, &self->renderer, NULL, factory,
897 "renderer", FALSE)) || (!is_renderer
898 && !_create_element (self, &self->parser, NULL, factory,
902 element = is_renderer ? self->renderer : self->parser;
904 is_video = _is_video_pad (self->video_sinkpad, &is_hw);
905 /* If this is a parser, create textoverlay and link video and the parser to it
906 * Else link the renderer to the output colorspace */
911 /* Try to get the latest video framerate */
912 video_peer = gst_pad_get_peer (self->video_sinkpad);
917 video_caps = gst_pad_get_negotiated_caps (video_peer);
919 video_caps = gst_pad_get_caps_reffed (video_peer);
920 if (!gst_caps_is_fixed (video_caps)) {
921 gst_caps_unref (video_caps);
927 && gst_video_parse_caps_framerate (video_caps, &fps_n, &fps_d)) {
928 if (self->fps_n != fps_n || self->fps_d != fps_d) {
929 GST_DEBUG_OBJECT (self, "New video fps: %d/%d", fps_n, fps_d);
936 gst_caps_unref (video_caps);
937 gst_object_unref (video_peer);
940 if (_has_subtitle_encoding_property (self->parser))
941 g_object_set (self->parser, "subtitle-encoding", self->encoding, NULL);
943 /* Try to set video fps on the parser */
944 gst_subtitle_overlay_set_fps (self);
946 /* First link everything internally */
947 if (G_UNLIKELY (!_create_element (self, &self->overlay, "textoverlay",
948 NULL, "overlay", FALSE))) {
951 overlay = self->overlay;
952 self->silent_property = "silent";
953 self->silent_property_invert = FALSE;
955 /* Set some properties */
956 g_object_set (G_OBJECT (overlay),
957 "halign", "center", "valign", "bottom", "wait-text", FALSE, NULL);
959 g_object_set (G_OBJECT (overlay), "font-desc", self->font_desc, NULL);
961 src = gst_element_get_static_pad (element, "src");
962 if (G_UNLIKELY (!src)) {
966 sink = gst_element_get_static_pad (overlay, "text_sink");
967 if (G_UNLIKELY (!sink)) {
968 GST_WARNING_OBJECT (self, "Can't get text sink from textoverlay");
969 gst_object_unref (src);
973 if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) {
974 GST_WARNING_OBJECT (self, "Can't link parser to textoverlay");
975 gst_object_unref (sink);
976 gst_object_unref (src);
979 gst_object_unref (sink);
980 gst_object_unref (src);
982 /* If we are working with video/x-surface, we do not add
983 * colorspace conversion elements */
984 if (is_video && !is_hw) {
985 if (G_UNLIKELY (!_create_element (self, &self->post_colorspace,
986 COLORSPACE, NULL, "post-colorspace", FALSE))) {
990 src = gst_element_get_static_pad (overlay, "src");
991 if (G_UNLIKELY (!src)) {
992 GST_WARNING_OBJECT (self, "Can't get src pad from overlay");
996 sink = gst_element_get_static_pad (self->post_colorspace, "sink");
997 if (G_UNLIKELY (!sink)) {
998 GST_WARNING_OBJECT (self, "Can't get sink pad from " COLORSPACE);
999 gst_object_unref (src);
1003 if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) {
1004 GST_WARNING_OBJECT (self, "Can't link overlay with " COLORSPACE);
1005 gst_object_unref (src);
1006 gst_object_unref (sink);
1009 gst_object_unref (src);
1010 gst_object_unref (sink);
1012 if (G_UNLIKELY (!_create_element (self, &self->pre_colorspace,
1013 "identity", NULL, "pre-colorspace", FALSE))) {
1017 sink = gst_element_get_static_pad (overlay, "video_sink");
1018 if (G_UNLIKELY (!sink)) {
1019 GST_WARNING_OBJECT (self, "Can't get video sink from textoverlay");
1023 src = gst_element_get_static_pad (self->pre_colorspace, "src");
1024 if (G_UNLIKELY (!src)) {
1025 GST_WARNING_OBJECT (self, "Can't get srcpad from " COLORSPACE);
1026 gst_object_unref (sink);
1030 if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) {
1031 GST_WARNING_OBJECT (self, "Can't link " COLORSPACE " to textoverlay");
1032 gst_object_unref (src);
1033 gst_object_unref (sink);
1036 gst_object_unref (src);
1037 gst_object_unref (sink);
1039 /* Set src ghostpad target */
1040 src = gst_element_get_static_pad (self->post_colorspace, "src");
1041 if (G_UNLIKELY (!src)) {
1042 GST_WARNING_OBJECT (self, "Can't get src pad from " COLORSPACE);
1046 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1047 (self->srcpad), src))) {
1048 GST_WARNING_OBJECT (self, "Can't set srcpad target");
1049 gst_object_unref (src);
1052 gst_object_unref (src);
1054 GST_DEBUG_OBJECT (self,
1055 "Is Hardware, not adding colorspace converters, ");
1056 /* Set src ghostpad target */
1057 src = gst_element_get_static_pad (self->overlay, "src");
1058 if (G_UNLIKELY (!src)) {
1059 GST_WARNING_OBJECT (self, "Can't get src pad from textoverlay");
1063 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1064 (self->srcpad), src))) {
1065 GST_WARNING_OBJECT (self, "Can't set srcpad target");
1066 gst_object_unref (src);
1069 gst_object_unref (src);
1072 /* Send segments to the parser/overlay if necessary. These are not sent
1073 * outside this element because of the proxy pad event function */
1074 if (self->video_segment.format != GST_FORMAT_UNDEFINED) {
1075 GstEvent *event1, *event2;
1078 sink = gst_element_get_static_pad (self->pre_colorspace, "sink");
1079 if (G_UNLIKELY (!sink)) {
1080 GST_WARNING_OBJECT (self, "Can't get sink pad from " COLORSPACE);
1084 sink = gst_element_get_static_pad (self->overlay, "video_sink");
1085 if (G_UNLIKELY (!sink)) {
1086 GST_WARNING_OBJECT (self, "Can't get sink pad from textoverlay");
1091 _generate_update_newsegment_event (&self->video_segment, &event1,
1093 GST_DEBUG_OBJECT (self,
1094 "Pushing video accumulate newsegment event: %" GST_PTR_FORMAT,
1096 GST_DEBUG_OBJECT (self,
1097 "Pushing video update newsegment event: %" GST_PTR_FORMAT,
1099 gst_pad_send_event (sink, event1);
1100 gst_pad_send_event (sink, event2);
1102 gst_object_unref (sink);
1105 if (self->subtitle_segment.format != GST_FORMAT_UNDEFINED) {
1106 GstEvent *event1, *event2;
1108 sink = gst_element_get_static_pad (element, "sink");
1109 if (G_UNLIKELY (!sink)) {
1110 GST_WARNING_OBJECT (self, "Failed to get subpad");
1114 _generate_update_newsegment_event (&self->subtitle_segment, &event1,
1116 GST_DEBUG_OBJECT (self,
1117 "Pushing subtitle accumulate newsegment event: %" GST_PTR_FORMAT,
1119 GST_DEBUG_OBJECT (self,
1120 "Pushing subtitle update newsegment event: %" GST_PTR_FORMAT,
1122 gst_pad_send_event (sink, event1);
1123 gst_pad_send_event (sink, event2);
1125 gst_object_unref (sink);
1128 /* Set the sink ghostpad targets */
1129 if (is_video && !is_hw) {
1130 sink = gst_element_get_static_pad (self->pre_colorspace, "sink");
1131 if (G_UNLIKELY (!sink)) {
1132 GST_WARNING_OBJECT (self, "Can't get sink pad from " COLORSPACE);
1135 } else if (is_video && is_hw) {
1136 GST_DEBUG_OBJECT (self, "Setting ghostpad to overlay video sink");
1137 sink = gst_element_get_static_pad (self->overlay, "video_sink");
1138 if (G_UNLIKELY (!sink)) {
1139 GST_WARNING_OBJECT (self, "Can't get sink pad from overlay");
1144 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1145 (self->video_sinkpad), sink))) {
1146 GST_WARNING_OBJECT (self, "Can't set video sinkpad target");
1147 gst_object_unref (sink);
1150 gst_object_unref (sink);
1152 /* Link subtitle identity to subtitle pad of our element */
1153 sink = gst_element_get_static_pad (element, "sink");
1154 if (G_UNLIKELY (!sink)) {
1155 GST_WARNING_OBJECT (self, "Failed to get subpad");
1159 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1160 (self->subtitle_sinkpad), sink))) {
1161 GST_WARNING_OBJECT (self, "Failed to set subtitle sink target");
1162 gst_object_unref (sink);
1165 gst_object_unref (sink);
1168 gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory));
1170 if (strcmp (name, "textoverlay") == 0) {
1171 /* Set some textoverlay specific properties */
1172 g_object_set (G_OBJECT (element),
1173 "halign", "center", "valign", "bottom", "wait-text", FALSE, NULL);
1174 if (self->font_desc)
1175 g_object_set (G_OBJECT (element), "font-desc", self->font_desc, NULL);
1176 self->silent_property = "silent";
1177 self->silent_property_invert = FALSE;
1179 self->silent_property =
1180 _get_silent_property (element, &self->silent_property_invert);
1181 if (_has_subtitle_encoding_property (self->renderer))
1182 g_object_set (self->renderer, "subtitle-encoding", self->encoding,
1184 if (_has_font_desc_property (self->renderer))
1185 g_object_set (self->renderer, "font-desc", self->font_desc, NULL);
1189 gboolean render_is_hw;
1191 /* First check that renderer also supports the video format */
1192 sink = _get_video_pad (element);
1193 if (G_UNLIKELY (!sink)) {
1194 GST_WARNING_OBJECT (self, "Can't get video sink from renderer");
1198 if (is_video != _is_video_pad (sink, &render_is_hw) ||
1199 is_hw != render_is_hw) {
1200 GST_DEBUG_OBJECT (self, "Renderer doesn't support %s video",
1201 is_hw ? "surface" : "raw");
1202 gst_object_unref (sink);
1205 gst_object_unref (sink);
1208 /* First link everything internally */
1209 if (G_UNLIKELY (!_create_element (self, &self->post_colorspace,
1210 COLORSPACE, NULL, "post-colorspace", FALSE))) {
1213 src = gst_element_get_static_pad (element, "src");
1214 if (G_UNLIKELY (!src)) {
1215 GST_WARNING_OBJECT (self, "Can't get src pad from renderer");
1219 sink = gst_element_get_static_pad (self->post_colorspace, "sink");
1220 if (G_UNLIKELY (!sink)) {
1221 GST_WARNING_OBJECT (self, "Can't get sink pad from " COLORSPACE);
1222 gst_object_unref (src);
1226 if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) {
1227 GST_WARNING_OBJECT (self, "Can't link renderer with " COLORSPACE);
1228 gst_object_unref (src);
1229 gst_object_unref (sink);
1232 gst_object_unref (src);
1233 gst_object_unref (sink);
1235 if (G_UNLIKELY (!_create_element (self, &self->pre_colorspace,
1236 COLORSPACE, NULL, "pre-colorspace", FALSE))) {
1240 sink = _get_video_pad (element);
1241 if (G_UNLIKELY (!sink)) {
1242 GST_WARNING_OBJECT (self, "Can't get video sink from renderer");
1246 src = gst_element_get_static_pad (self->pre_colorspace, "src");
1247 if (G_UNLIKELY (!src)) {
1248 GST_WARNING_OBJECT (self, "Can't get srcpad from " COLORSPACE);
1249 gst_object_unref (sink);
1253 if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) {
1254 GST_WARNING_OBJECT (self, "Can't link " COLORSPACE " to renderer");
1255 gst_object_unref (src);
1256 gst_object_unref (sink);
1259 gst_object_unref (src);
1260 gst_object_unref (sink);
1262 /* Set src ghostpad target */
1263 src = gst_element_get_static_pad (self->post_colorspace, "src");
1264 if (G_UNLIKELY (!src)) {
1265 GST_WARNING_OBJECT (self, "Can't get src pad from " COLORSPACE);
1269 /* Set src ghostpad target in the harware accelerated case */
1271 src = gst_element_get_static_pad (self->renderer, "src");
1272 if (G_UNLIKELY (!src)) {
1273 GST_WARNING_OBJECT (self, "Can't get src pad from renderer");
1277 } else { /* No video pad */
1278 GstCaps *allowed_caps, *video_caps = NULL;
1280 gboolean can_intersect = FALSE;
1282 video_peer = gst_pad_get_peer (self->video_sinkpad);
1284 video_caps = gst_pad_get_negotiated_caps (video_peer);
1286 video_caps = gst_pad_get_caps_reffed (video_peer);
1288 gst_object_unref (video_peer);
1291 sink = _get_video_pad (element);
1292 if (G_UNLIKELY (!sink)) {
1293 GST_WARNING_OBJECT (self, "Can't get video sink from renderer");
1296 allowed_caps = gst_pad_get_caps_reffed (sink);
1297 gst_object_unref (sink);
1299 if (allowed_caps && video_caps)
1300 can_intersect = gst_caps_can_intersect (allowed_caps, video_caps);
1303 gst_caps_unref (allowed_caps);
1306 gst_caps_unref (video_caps);
1308 if (G_UNLIKELY (!can_intersect)) {
1309 GST_WARNING_OBJECT (self, "Renderer with custom caps is not "
1310 "compatible with video stream");
1314 src = gst_element_get_static_pad (element, "src");
1315 if (G_UNLIKELY (!src)) {
1316 GST_WARNING_OBJECT (self, "Can't get src pad from renderer");
1321 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1322 (self->srcpad), src))) {
1323 GST_WARNING_OBJECT (self, "Can't set srcpad target");
1324 gst_object_unref (src);
1327 gst_object_unref (src);
1329 /* Send segments to the renderer if necessary. These are not sent
1330 * outside this element because of the proxy pad event handler */
1331 if (self->video_segment.format != GST_FORMAT_UNDEFINED) {
1332 GstEvent *event1, *event2;
1334 sink = gst_element_get_static_pad (self->pre_colorspace, "sink");
1335 if (G_UNLIKELY (!sink)) {
1336 GST_WARNING_OBJECT (self, "Can't get sink pad from " COLORSPACE);
1340 _generate_update_newsegment_event (&self->video_segment, &event1,
1342 GST_DEBUG_OBJECT (self,
1343 "Pushing video accumulate newsegment event: %" GST_PTR_FORMAT,
1345 GST_DEBUG_OBJECT (self,
1346 "Pushing video update newsegment event: %" GST_PTR_FORMAT,
1348 gst_pad_send_event (sink, event1);
1349 gst_pad_send_event (sink, event2);
1350 gst_object_unref (sink);
1353 if (self->subtitle_segment.format != GST_FORMAT_UNDEFINED) {
1354 GstEvent *event1, *event2;
1356 sink = _get_sub_pad (element);
1357 if (G_UNLIKELY (!sink)) {
1358 GST_WARNING_OBJECT (self, "Failed to get subpad");
1362 _generate_update_newsegment_event (&self->subtitle_segment, &event1,
1364 GST_DEBUG_OBJECT (self,
1365 "Pushing subtitle accumulate newsegment event: %" GST_PTR_FORMAT,
1367 GST_DEBUG_OBJECT (self,
1368 "Pushing subtitle update newsegment event: %" GST_PTR_FORMAT,
1370 gst_pad_send_event (sink, event1);
1371 gst_pad_send_event (sink, event2);
1372 gst_object_unref (sink);
1375 /* Set the sink ghostpad targets */
1376 if (self->pre_colorspace) {
1377 sink = gst_element_get_static_pad (self->pre_colorspace, "sink");
1378 if (G_UNLIKELY (!sink)) {
1379 GST_WARNING_OBJECT (self, "Can't get sink pad from " COLORSPACE);
1383 sink = _get_video_pad (element);
1384 if (G_UNLIKELY (!sink)) {
1385 GST_WARNING_OBJECT (self, "Can't get sink pad from %" GST_PTR_FORMAT,
1391 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1392 (self->video_sinkpad), sink))) {
1393 GST_WARNING_OBJECT (self, "Can't set video sinkpad target");
1394 gst_object_unref (sink);
1397 gst_object_unref (sink);
1399 sink = _get_sub_pad (element);
1400 if (G_UNLIKELY (!sink)) {
1401 GST_WARNING_OBJECT (self, "Failed to get subpad");
1405 if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST
1406 (self->subtitle_sinkpad), sink))) {
1407 GST_WARNING_OBJECT (self, "Failed to set subtitle sink target");
1408 gst_object_unref (sink);
1411 gst_object_unref (sink);
1417 if (G_UNLIKELY (l == NULL)) {
1418 GST_ELEMENT_WARNING (self, CORE, FAILED, (NULL),
1419 ("Failed to find any usable factories"));
1420 self->subtitle_error = TRUE;
1421 _setup_passthrough (self);
1422 do_async_done (self);
1424 GST_DEBUG_OBJECT (self, "Everything worked, unblocking pads");
1425 gst_pad_set_blocked_async_full (self->video_block_pad, FALSE,
1426 _pad_blocked_cb, self, NULL);
1427 gst_pad_set_blocked_async_full (self->subtitle_block_pad, FALSE,
1428 _pad_blocked_cb, self, NULL);
1429 do_async_done (self);
1434 gst_plugin_feature_list_free (factories);
1435 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1438 static GstStateChangeReturn
1439 gst_subtitle_overlay_change_state (GstElement * element,
1440 GstStateChange transition)
1442 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (element);
1443 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
1445 switch (transition) {
1446 case GST_STATE_CHANGE_NULL_TO_READY:
1447 GST_DEBUG_OBJECT (self, "State change NULL->READY");
1448 g_mutex_lock (self->factories_lock);
1449 if (G_UNLIKELY (!gst_subtitle_overlay_update_factory_list (self))) {
1450 g_mutex_unlock (self->factories_lock);
1451 return GST_STATE_CHANGE_FAILURE;
1453 g_mutex_unlock (self->factories_lock);
1455 GST_SUBTITLE_OVERLAY_LOCK (self);
1456 /* Set the internal pads to blocking */
1457 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1458 _pad_blocked_cb, self, NULL);
1459 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1460 _pad_blocked_cb, self, NULL);
1461 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1463 case GST_STATE_CHANGE_READY_TO_PAUSED:
1464 GST_DEBUG_OBJECT (self, "State change READY->PAUSED");
1465 gst_segment_init (&self->video_segment, GST_FORMAT_UNDEFINED);
1466 gst_segment_init (&self->subtitle_segment, GST_FORMAT_UNDEFINED);
1468 self->fps_n = self->fps_d = 0;
1470 self->subtitle_flush = FALSE;
1471 self->subtitle_error = FALSE;
1473 self->downstream_chain_error = FALSE;
1475 do_async_start (self);
1476 ret = GST_STATE_CHANGE_ASYNC;
1479 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1480 GST_DEBUG_OBJECT (self, "State change PAUSED->PLAYING");
1486 GstStateChangeReturn bret;
1488 bret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1489 GST_DEBUG_OBJECT (self, "Base class state changed returned: %d", bret);
1490 if (G_UNLIKELY (bret == GST_STATE_CHANGE_FAILURE))
1492 else if (bret == GST_STATE_CHANGE_ASYNC)
1494 else if (G_UNLIKELY (bret == GST_STATE_CHANGE_NO_PREROLL)) {
1495 do_async_done (self);
1500 switch (transition) {
1501 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1502 GST_DEBUG_OBJECT (self, "State change PLAYING->PAUSED");
1504 case GST_STATE_CHANGE_PAUSED_TO_READY:
1505 GST_DEBUG_OBJECT (self, "State change PAUSED->READY");
1507 /* Set the pads back to blocking state */
1508 GST_SUBTITLE_OVERLAY_LOCK (self);
1509 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1510 _pad_blocked_cb, self, NULL);
1511 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1512 _pad_blocked_cb, self, NULL);
1513 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1515 do_async_done (self);
1518 case GST_STATE_CHANGE_READY_TO_NULL:{
1521 GST_DEBUG_OBJECT (self, "State change READY->NULL");
1523 GST_SUBTITLE_OVERLAY_LOCK (self);
1524 gst_caps_replace (&self->subcaps, NULL);
1526 /* Unlink ghost pads */
1527 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
1528 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL);
1529 gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad),
1533 if (self->video_block_pad) {
1534 pad = self->video_block_pad;
1535 gst_pad_set_blocked_async_full (pad, FALSE, _pad_blocked_cb,
1539 if (self->subtitle_block_pad) {
1540 pad = self->subtitle_block_pad;
1541 gst_pad_set_blocked_async_full (pad, FALSE, _pad_blocked_cb,
1545 /* Remove elements */
1546 self->silent_property = NULL;
1547 _remove_element (self, &self->post_colorspace);
1548 _remove_element (self, &self->overlay);
1549 _remove_element (self, &self->parser);
1550 _remove_element (self, &self->renderer);
1551 _remove_element (self, &self->pre_colorspace);
1552 _remove_element (self, &self->passthrough_identity);
1553 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1565 gst_subtitle_overlay_handle_message (GstBin * bin, GstMessage * message)
1567 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (bin);
1569 if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR) {
1570 GstObject *src = GST_MESSAGE_SRC (message);
1572 /* Convert error messages from the subtitle pipeline to
1573 * warnings and switch to passthrough mode */
1576 && gst_object_has_ancestor (src,
1577 GST_OBJECT_CAST (self->overlay))) || (self->parser
1578 && gst_object_has_ancestor (src,
1579 GST_OBJECT_CAST (self->parser))) || (self->renderer
1580 && gst_object_has_ancestor (src,
1581 GST_OBJECT_CAST (self->renderer))))) {
1583 gchar *debug = NULL;
1586 gst_message_parse_error (message, &err, &debug);
1587 GST_DEBUG_OBJECT (self,
1588 "Got error message from subtitle element %s: %s (%s)",
1589 GST_MESSAGE_SRC_NAME (message), GST_STR_NULL (err->message),
1590 GST_STR_NULL (debug));
1592 wmsg = gst_message_new_warning (src, err, debug);
1593 gst_message_unref (message);
1598 GST_SUBTITLE_OVERLAY_LOCK (self);
1599 self->subtitle_error = TRUE;
1601 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1602 _pad_blocked_cb, self, NULL);
1604 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1605 _pad_blocked_cb, self, NULL);
1606 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1610 GST_BIN_CLASS (parent_class)->handle_message (bin, message);
1614 gst_subtitle_overlay_get_property (GObject * object, guint prop_id,
1615 GValue * value, GParamSpec * pspec)
1617 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (object);
1621 g_value_set_boolean (value, self->silent);
1623 case PROP_FONT_DESC:
1624 GST_SUBTITLE_OVERLAY_LOCK (self);
1625 g_value_set_string (value, self->font_desc);
1626 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1628 case PROP_SUBTITLE_ENCODING:
1629 GST_SUBTITLE_OVERLAY_LOCK (self);
1630 g_value_set_string (value, self->encoding);
1631 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1634 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1640 gst_subtitle_overlay_set_property (GObject * object, guint prop_id,
1641 const GValue * value, GParamSpec * pspec)
1643 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (object);
1647 GST_SUBTITLE_OVERLAY_LOCK (self);
1648 self->silent = g_value_get_boolean (value);
1649 if (self->silent_property) {
1650 gboolean silent = self->silent;
1652 if (self->silent_property_invert)
1656 g_object_set (self->overlay, self->silent_property, silent, NULL);
1657 else if (self->renderer)
1658 g_object_set (self->renderer, self->silent_property, silent, NULL);
1660 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1661 _pad_blocked_cb, self, NULL);
1663 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1664 _pad_blocked_cb, self, NULL);
1666 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1668 case PROP_FONT_DESC:
1669 GST_SUBTITLE_OVERLAY_LOCK (self);
1670 g_free (self->font_desc);
1671 self->font_desc = g_value_dup_string (value);
1673 g_object_set (self->overlay, "font-desc", self->font_desc, NULL);
1674 else if (self->renderer && _has_font_desc_property (self->renderer))
1675 g_object_set (self->renderer, "font-desc", self->font_desc, NULL);
1676 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1678 case PROP_SUBTITLE_ENCODING:
1679 GST_SUBTITLE_OVERLAY_LOCK (self);
1680 g_free (self->encoding);
1681 self->encoding = g_value_dup_string (value);
1682 if (self->renderer && _has_subtitle_encoding_property (self->renderer))
1683 g_object_set (self->renderer, "subtitle-encoding", self->encoding,
1685 if (self->parser && _has_subtitle_encoding_property (self->parser))
1686 g_object_set (self->parser, "subtitle-encoding", self->encoding, NULL);
1687 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1690 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1696 gst_subtitle_overlay_base_init (gpointer g_class)
1698 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
1700 gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
1702 gst_element_class_add_static_pad_template (gstelement_class,
1703 &video_sinktemplate);
1704 gst_element_class_add_static_pad_template (gstelement_class,
1705 &subtitle_sinktemplate);
1707 gst_element_class_set_details_simple (gstelement_class, "Subtitle Overlay",
1708 "Video/Overlay/Subtitle",
1709 "Overlays a video stream with subtitles",
1710 "Sebastian Dröge <sebastian.droege@collabora.co.uk>");
1714 gst_subtitle_overlay_class_init (GstSubtitleOverlayClass * klass)
1716 GObjectClass *gobject_class = (GObjectClass *) klass;
1717 GstElementClass *element_class = (GstElementClass *) klass;
1718 GstBinClass *bin_class = (GstBinClass *) klass;
1720 gobject_class->finalize = gst_subtitle_overlay_finalize;
1721 gobject_class->set_property = gst_subtitle_overlay_set_property;
1722 gobject_class->get_property = gst_subtitle_overlay_get_property;
1724 g_object_class_install_property (gobject_class, PROP_SILENT,
1725 g_param_spec_boolean ("silent",
1727 "Whether to show subtitles", FALSE,
1728 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
1730 g_object_class_install_property (gobject_class, PROP_FONT_DESC,
1731 g_param_spec_string ("font-desc",
1732 "Subtitle font description",
1733 "Pango font description of font "
1734 "to be used for subtitle rendering", NULL,
1735 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
1737 g_object_class_install_property (gobject_class, PROP_SUBTITLE_ENCODING,
1738 g_param_spec_string ("subtitle-encoding", "subtitle encoding",
1739 "Encoding to assume if input subtitles are not in UTF-8 encoding. "
1740 "If not set, the GST_SUBTITLE_ENCODING environment variable will "
1741 "be checked for an encoding to use. If that is not set either, "
1742 "ISO-8859-15 will be assumed.", NULL,
1743 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
1745 element_class->change_state =
1746 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_change_state);
1748 bin_class->handle_message =
1749 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_handle_message);
1752 static GstFlowReturn
1753 gst_subtitle_overlay_src_proxy_chain (GstPad * proxypad, GstBuffer * buffer)
1756 GstSubtitleOverlay *self;
1759 ghostpad = GST_PAD_CAST (gst_pad_get_parent (proxypad));
1760 if (G_UNLIKELY (!ghostpad)) {
1761 gst_buffer_unref (buffer);
1762 return GST_FLOW_ERROR;
1764 self = GST_SUBTITLE_OVERLAY_CAST (gst_pad_get_parent (ghostpad));
1765 if (G_UNLIKELY (!self || self->srcpad != ghostpad)) {
1766 gst_buffer_unref (buffer);
1767 gst_object_unref (ghostpad);
1768 return GST_FLOW_ERROR;
1771 ret = gst_proxy_pad_chain_default (proxypad, buffer);
1773 if (IS_VIDEO_CHAIN_IGNORE_ERROR (ret)) {
1774 GST_ERROR_OBJECT (self, "Downstream chain error: %s",
1775 gst_flow_get_name (ret));
1776 self->downstream_chain_error = TRUE;
1779 gst_object_unref (self);
1780 gst_object_unref (ghostpad);
1786 gst_subtitle_overlay_src_proxy_event (GstPad * proxypad, GstEvent * event)
1788 GstPad *ghostpad = NULL;
1789 GstSubtitleOverlay *self = NULL;
1790 gboolean ret = FALSE;
1791 const GstStructure *s;
1793 ghostpad = GST_PAD_CAST (gst_pad_get_parent (proxypad));
1794 if (G_UNLIKELY (!ghostpad))
1796 self = GST_SUBTITLE_OVERLAY_CAST (gst_pad_get_parent (ghostpad));
1797 if (G_UNLIKELY (!self || self->srcpad != ghostpad))
1800 s = gst_event_get_structure (event);
1801 if (s && gst_structure_id_has_field (s, _subtitle_overlay_event_marker_id)) {
1802 GST_DEBUG_OBJECT (ghostpad, "Dropping event with marker: %" GST_PTR_FORMAT,
1804 gst_event_unref (event);
1808 ret = gst_proxy_pad_event_default (proxypad, event);
1814 gst_event_unref (event);
1816 gst_object_unref (self);
1818 gst_object_unref (ghostpad);
1823 gst_subtitle_overlay_video_sink_setcaps (GstPad * pad, GstCaps * caps)
1825 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad));
1827 gboolean ret = TRUE;
1830 GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps);
1832 target = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (self->video_sinkpad));
1834 GST_SUBTITLE_OVERLAY_LOCK (self);
1836 if (!target || !gst_pad_accept_caps (target, caps)) {
1837 GST_DEBUG_OBJECT (pad, "Target did not accept caps -- reconfiguring");
1839 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1840 _pad_blocked_cb, self, NULL);
1842 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1843 _pad_blocked_cb, self, NULL);
1846 if (!gst_video_parse_caps_framerate (caps, &fps_n, &fps_d)) {
1847 GST_ERROR_OBJECT (pad, "Failed to parse framerate from caps");
1849 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1853 if (self->fps_n != fps_n || self->fps_d != fps_d) {
1854 GST_DEBUG_OBJECT (self, "New video fps: %d/%d", fps_n, fps_d);
1855 self->fps_n = fps_n;
1856 self->fps_d = fps_d;
1857 gst_subtitle_overlay_set_fps (self);
1859 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1861 ret = gst_ghost_pad_setcaps_default (pad, caps);
1865 gst_object_unref (target);
1866 gst_object_unref (self);
1871 gst_subtitle_overlay_video_sink_event (GstPad * pad, GstEvent * event)
1873 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad));
1876 if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
1877 GST_DEBUG_OBJECT (pad,
1878 "Resetting video segment because of flush-stop event");
1879 gst_segment_init (&self->video_segment, GST_FORMAT_UNDEFINED);
1880 self->fps_n = self->fps_d = 0;
1883 ret = gst_proxy_pad_event_default (pad, gst_event_ref (event));
1885 if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
1887 gdouble rate, applied_rate;
1889 gint64 start, stop, position;
1891 GST_DEBUG_OBJECT (pad, "Newsegment event: %" GST_PTR_FORMAT,
1893 gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
1894 &format, &start, &stop, &position);
1896 if (format != GST_FORMAT_TIME) {
1897 GST_ERROR_OBJECT (pad, "Newsegment event in non-time format: %s",
1898 gst_format_get_name (format));
1899 gst_event_unref (event);
1900 gst_object_unref (self);
1904 GST_DEBUG_OBJECT (pad, "Old video segment: %" GST_SEGMENT_FORMAT,
1905 &self->video_segment);
1906 gst_segment_set_newsegment_full (&self->video_segment, update, rate,
1907 applied_rate, format, start, stop, position);
1908 GST_DEBUG_OBJECT (pad, "New video segment: %" GST_SEGMENT_FORMAT,
1909 &self->video_segment);
1912 gst_event_unref (event);
1913 gst_object_unref (self);
1917 static GstFlowReturn
1918 gst_subtitle_overlay_video_sink_chain (GstPad * pad, GstBuffer * buffer)
1920 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (GST_PAD_PARENT (pad));
1921 GstFlowReturn ret = gst_proxy_pad_chain_default (pad, buffer);
1923 if (G_UNLIKELY (self->downstream_chain_error) || self->passthrough_identity) {
1925 } else if (IS_VIDEO_CHAIN_IGNORE_ERROR (ret)) {
1926 GST_DEBUG_OBJECT (self, "Subtitle renderer produced chain error: %s",
1927 gst_flow_get_name (ret));
1928 GST_SUBTITLE_OVERLAY_LOCK (self);
1929 self->subtitle_error = TRUE;
1930 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1931 _pad_blocked_cb, self, NULL);
1933 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1934 _pad_blocked_cb, self, NULL);
1935 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1943 static GstFlowReturn
1944 gst_subtitle_overlay_subtitle_sink_chain (GstPad * pad, GstBuffer * buffer)
1946 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (GST_PAD_PARENT (pad));
1948 if (self->subtitle_error) {
1949 gst_buffer_unref (buffer);
1952 GstFlowReturn ret = gst_proxy_pad_chain_default (pad, buffer);
1954 if (IS_SUBTITLE_CHAIN_IGNORE_ERROR (ret)) {
1955 GST_DEBUG_OBJECT (self, "Subtitle chain error: %s",
1956 gst_flow_get_name (ret));
1957 GST_SUBTITLE_OVERLAY_LOCK (self);
1958 self->subtitle_error = TRUE;
1959 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
1960 _pad_blocked_cb, self, NULL);
1962 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
1963 _pad_blocked_cb, self, NULL);
1964 GST_SUBTITLE_OVERLAY_UNLOCK (self);
1974 gst_subtitle_overlay_subtitle_sink_getcaps (GstPad * pad)
1976 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad));
1979 g_mutex_lock (self->factories_lock);
1980 if (G_UNLIKELY (!gst_subtitle_overlay_update_factory_list (self)))
1981 ret = GST_CAPS_NONE;
1983 ret = gst_caps_ref (self->factory_caps);
1984 g_mutex_unlock (self->factories_lock);
1986 GST_DEBUG_OBJECT (pad, "Returning subtitle caps %" GST_PTR_FORMAT, ret);
1988 gst_object_unref (self);
1994 gst_subtitle_overlay_subtitle_sink_acceptcaps (GstPad * pad, GstCaps * caps)
1996 GstCaps *othercaps = gst_subtitle_overlay_subtitle_sink_getcaps (pad);
1997 gboolean ret = gst_caps_is_subset (caps, othercaps);
1999 gst_caps_unref (othercaps);
2005 gst_subtitle_overlay_subtitle_sink_setcaps (GstPad * pad, GstCaps * caps)
2007 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad));
2008 gboolean ret = TRUE;
2009 GstPad *target = NULL;;
2011 GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps);
2014 gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad));
2016 GST_SUBTITLE_OVERLAY_LOCK (self);
2017 gst_caps_replace (&self->subcaps, caps);
2019 if (target && gst_pad_accept_caps (target, caps)) {
2020 GST_DEBUG_OBJECT (pad, "Target accepts caps");
2021 ret = gst_ghost_pad_setcaps_default (pad, caps);
2022 GST_SUBTITLE_OVERLAY_UNLOCK (self);
2026 GST_DEBUG_OBJECT (pad, "Target did not accept caps");
2028 self->subtitle_error = FALSE;
2030 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
2031 _pad_blocked_cb, self, NULL);
2033 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
2034 _pad_blocked_cb, self, NULL);
2035 GST_SUBTITLE_OVERLAY_UNLOCK (self);
2039 gst_object_unref (target);
2040 gst_object_unref (self);
2044 static GstPadLinkReturn
2045 gst_subtitle_overlay_subtitle_sink_link (GstPad * pad, GstPad * peer)
2047 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad));
2048 GstPadLinkReturn ret;
2051 GST_DEBUG_OBJECT (pad, "Linking pad to peer %" GST_PTR_FORMAT, peer);
2053 caps = gst_pad_get_negotiated_caps (peer);
2055 caps = gst_pad_get_caps_reffed (peer);
2056 if (!gst_caps_is_fixed (caps)) {
2057 gst_caps_unref (caps);
2063 GST_SUBTITLE_OVERLAY_LOCK (self);
2064 GST_DEBUG_OBJECT (pad, "Have fixed peer caps: %" GST_PTR_FORMAT, caps);
2065 gst_caps_replace (&self->subcaps, caps);
2067 self->subtitle_error = FALSE;
2069 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
2070 _pad_blocked_cb, self, NULL);
2072 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
2073 _pad_blocked_cb, self, NULL);
2074 GST_SUBTITLE_OVERLAY_UNLOCK (self);
2075 gst_caps_unref (caps);
2078 ret = gst_ghost_pad_link_default (pad, peer);
2080 gst_object_unref (self);
2085 gst_subtitle_overlay_subtitle_sink_unlink (GstPad * pad)
2087 GstSubtitleOverlay *self =
2088 GST_SUBTITLE_OVERLAY (gst_object_ref (GST_PAD_PARENT (pad)));
2090 /* FIXME: Can't use gst_pad_get_parent() here because this is called with
2091 * the object lock from state changes
2094 GST_DEBUG_OBJECT (pad, "Pad unlinking");
2095 gst_caps_replace (&self->subcaps, NULL);
2097 gst_ghost_pad_unlink_default (pad);
2099 GST_SUBTITLE_OVERLAY_LOCK (self);
2100 self->subtitle_error = FALSE;
2102 if (self->subtitle_block_pad)
2103 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
2104 _pad_blocked_cb, self, NULL);
2106 if (self->video_block_pad)
2107 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
2108 _pad_blocked_cb, self, NULL);
2109 GST_SUBTITLE_OVERLAY_UNLOCK (self);
2111 gst_object_unref (self);
2115 gst_subtitle_overlay_subtitle_sink_event (GstPad * pad, GstEvent * event)
2117 GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad));
2121 if (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_DOWNSTREAM_OOB &&
2123 && strcmp (gst_structure_get_name (event->structure),
2124 "subtitleoverlay-flush-subtitle") == 0) {
2125 GST_DEBUG_OBJECT (pad, "Custom subtitle flush event");
2126 GST_SUBTITLE_OVERLAY_LOCK (self);
2127 self->subtitle_flush = TRUE;
2128 self->subtitle_error = FALSE;
2129 if (self->subtitle_block_pad)
2130 gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
2131 _pad_blocked_cb, self, NULL);
2132 if (self->video_block_pad)
2133 gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
2134 _pad_blocked_cb, self, NULL);
2135 GST_SUBTITLE_OVERLAY_UNLOCK (self);
2137 gst_event_unref (event);
2141 } else if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
2142 gst_event_parse_new_segment_full (event, NULL, NULL, NULL,
2143 &format, NULL, NULL, NULL);
2144 if (self->subtitle_segment.format != GST_FORMAT_UNDEFINED &&
2145 self->subtitle_segment.format != format) {
2146 GST_DEBUG_OBJECT (pad, "Subtitle segment format changed: %s -> %s",
2147 gst_format_get_name (self->subtitle_segment.format),
2148 gst_format_get_name (format));
2149 gst_segment_init (&self->subtitle_segment, GST_FORMAT_UNDEFINED);
2153 switch (GST_EVENT_TYPE (event)) {
2154 case GST_EVENT_FLUSH_STOP:
2155 GST_DEBUG_OBJECT (pad,
2156 "Resetting subtitle segment because of flush-stop");
2157 gst_segment_init (&self->subtitle_segment, GST_FORMAT_UNDEFINED);
2159 case GST_EVENT_FLUSH_START:
2160 case GST_EVENT_NEWSEGMENT:
2162 /* Add our event marker to make sure no events from here go ever outside
2163 * the element, they're only interesting for our internal elements */
2165 GST_EVENT_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST
2167 if (!event->structure) {
2169 gst_structure_id_empty_new (_subtitle_overlay_event_marker_id);
2170 gst_structure_set_parent_refcount (event->structure,
2171 &event->mini_object.refcount);
2173 gst_structure_id_set (event->structure, _subtitle_overlay_event_marker_id,
2174 G_TYPE_BOOLEAN, TRUE, NULL);
2180 ret = gst_proxy_pad_event_default (pad, gst_event_ref (event));
2182 if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
2184 gdouble rate, applied_rate;
2185 gint64 start, stop, position;
2187 GST_DEBUG_OBJECT (pad, "Newsegment event: %" GST_PTR_FORMAT,
2189 gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
2190 &format, &start, &stop, &position);
2192 GST_DEBUG_OBJECT (pad, "Old subtitle segment: %" GST_SEGMENT_FORMAT,
2193 &self->subtitle_segment);
2194 if (self->subtitle_segment.format != format) {
2195 GST_DEBUG_OBJECT (pad, "Subtitle segment format changed: %s -> %s",
2196 gst_format_get_name (self->subtitle_segment.format),
2197 gst_format_get_name (format));
2198 gst_segment_init (&self->subtitle_segment, format);
2201 gst_segment_set_newsegment_full (&self->subtitle_segment, update, rate,
2202 applied_rate, format, start, stop, position);
2203 GST_DEBUG_OBJECT (pad, "New subtitle segment: %" GST_SEGMENT_FORMAT,
2204 &self->subtitle_segment);
2206 gst_event_unref (event);
2209 gst_object_unref (self);
2214 gst_subtitle_overlay_init (GstSubtitleOverlay * self,
2215 GstSubtitleOverlayClass * klass)
2217 GstPadTemplate *templ;
2218 GstPad *proxypad = NULL;
2220 self->lock = g_mutex_new ();
2221 self->factories_lock = g_mutex_new ();
2223 templ = gst_static_pad_template_get (&srctemplate);
2224 self->srcpad = gst_ghost_pad_new_no_target_from_template ("src", templ);
2225 gst_object_unref (templ);
2228 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD (self->srcpad)));
2229 gst_pad_set_event_function (proxypad,
2230 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_src_proxy_event));
2231 gst_pad_set_chain_function (proxypad,
2232 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_src_proxy_chain));
2233 gst_object_unref (proxypad);
2235 gst_element_add_pad (GST_ELEMENT_CAST (self), self->srcpad);
2237 templ = gst_static_pad_template_get (&video_sinktemplate);
2238 self->video_sinkpad =
2239 gst_ghost_pad_new_no_target_from_template ("video_sink", templ);
2240 gst_object_unref (templ);
2241 gst_pad_set_event_function (self->video_sinkpad,
2242 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_video_sink_event));
2243 gst_pad_set_setcaps_function (self->video_sinkpad,
2244 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_video_sink_setcaps));
2245 gst_pad_set_chain_function (self->video_sinkpad,
2246 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_video_sink_chain));
2249 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD
2250 (self->video_sinkpad)));
2251 self->video_block_pad = proxypad;
2252 gst_object_unref (proxypad);
2253 gst_element_add_pad (GST_ELEMENT_CAST (self), self->video_sinkpad);
2255 templ = gst_static_pad_template_get (&subtitle_sinktemplate);
2256 self->subtitle_sinkpad =
2257 gst_ghost_pad_new_no_target_from_template ("subtitle_sink", templ);
2258 gst_object_unref (templ);
2259 gst_pad_set_link_function (self->subtitle_sinkpad,
2260 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_link));
2261 gst_pad_set_unlink_function (self->subtitle_sinkpad,
2262 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_unlink));
2263 gst_pad_set_event_function (self->subtitle_sinkpad,
2264 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_event));
2265 gst_pad_set_setcaps_function (self->subtitle_sinkpad,
2266 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_setcaps));
2267 gst_pad_set_chain_function (self->subtitle_sinkpad,
2268 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_chain));
2269 gst_pad_set_getcaps_function (self->subtitle_sinkpad,
2270 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_getcaps));
2271 gst_pad_set_acceptcaps_function (self->subtitle_sinkpad,
2272 GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_acceptcaps));
2273 gst_pad_set_bufferalloc_function (self->subtitle_sinkpad, NULL);
2276 GST_PAD_CAST (gst_proxy_pad_get_internal (GST_PROXY_PAD
2277 (self->subtitle_sinkpad)));
2278 self->subtitle_block_pad = proxypad;
2279 gst_object_unref (proxypad);
2281 gst_element_add_pad (GST_ELEMENT_CAST (self), self->subtitle_sinkpad);
2288 gst_subtitle_overlay_plugin_init (GstPlugin * plugin)
2290 GST_DEBUG_CATEGORY_INIT (subtitle_overlay_debug, "subtitleoverlay", 0,
2291 "Subtitle Overlay");
2293 _subtitle_overlay_event_marker_id =
2294 g_quark_from_static_string ("gst-subtitle-overlay-event-marker");
2296 return gst_element_register (plugin, "subtitleoverlay", GST_RANK_NONE,
2297 GST_TYPE_SUBTITLE_OVERLAY);