diff options
Diffstat (limited to 'gst/playback/gstsubtitleoverlay.c')
| -rw-r--r-- | gst/playback/gstsubtitleoverlay.c | 2140 |
1 files changed, 0 insertions, 2140 deletions
diff --git a/gst/playback/gstsubtitleoverlay.c b/gst/playback/gstsubtitleoverlay.c deleted file mode 100644 index 98fe15d8..00000000 --- a/gst/playback/gstsubtitleoverlay.c +++ /dev/null @@ -1,2140 +0,0 @@ -/* - * Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -/** - * SECTION:element-subtitleoverlay - * - * #GstBin that auto-magically overlays a video stream with subtitles by - * autoplugging the required elements. - * - * It supports raw, timestamped text, different textual subtitle formats and - * DVD subpicture subtitles. - * - * <refsect2> - * <title>Examples</title> - * |[ - * 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. - * ]| This will play back the given Matroska file with h264 video and subpicture subtitles. - * </refsect2> - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "gstsubtitleoverlay.h" - -#include <gst/gstfilter.h> -#include <gst/pbutils/missing-plugins.h> -#include <gst/video/video.h> -#include <string.h> - -GST_DEBUG_CATEGORY_STATIC (subtitle_overlay_debug); -#define GST_CAT_DEFAULT subtitle_overlay_debug - -#define IS_SUBTITLE_CHAIN_IGNORE_ERROR(flow) \ - G_UNLIKELY (flow == GST_FLOW_ERROR || flow == GST_FLOW_NOT_NEGOTIATED) - -#define IS_VIDEO_CHAIN_IGNORE_ERROR(flow) \ - G_UNLIKELY (flow == GST_FLOW_ERROR) - -static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS_ANY); - -static GstStaticPadTemplate video_sinktemplate = -GST_STATIC_PAD_TEMPLATE ("video_sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS_ANY); - -static GstStaticPadTemplate subtitle_sinktemplate = -GST_STATIC_PAD_TEMPLATE ("subtitle_sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS_ANY); - -enum -{ - PROP_0, - PROP_SILENT, - PROP_FONT_DESC, - PROP_SUBTITLE_ENCODING -}; - -GST_BOILERPLATE (GstSubtitleOverlay, gst_subtitle_overlay, GstBin, - GST_TYPE_BIN); - -static void _pad_blocked_cb (GstPad * pad, gboolean blocked, - gpointer user_data); - -static GQuark _subtitle_overlay_event_marker_id = 0; - -static void -do_async_start (GstSubtitleOverlay * self) -{ - if (!self->do_async) { - GstMessage *msg = - gst_message_new_async_start (GST_OBJECT_CAST (self), FALSE); - - GST_DEBUG_OBJECT (self, "Posting async-start"); - parent_class->handle_message (GST_BIN_CAST (self), msg); - self->do_async = TRUE; - } -} - -static void -do_async_done (GstSubtitleOverlay * self) -{ - if (self->do_async) { - GstMessage *msg = gst_message_new_async_done (GST_OBJECT_CAST (self)); - - GST_DEBUG_OBJECT (self, "Posting async-done"); - parent_class->handle_message (GST_BIN_CAST (self), msg); - self->do_async = FALSE; - } -} - -static void -gst_subtitle_overlay_finalize (GObject * object) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (object); - - if (self->lock) { - g_mutex_free (self->lock); - self->lock = NULL; - } - - if (self->factories_lock) { - g_mutex_free (self->factories_lock); - self->factories_lock = NULL; - } - - if (self->factories) - gst_plugin_feature_list_free (self->factories); - self->factories = NULL; - gst_caps_replace (&self->factory_caps, NULL); - - if (self->font_desc) { - g_free (self->font_desc); - self->font_desc = NULL; - } - - if (self->encoding) { - g_free (self->encoding); - self->encoding = NULL; - } - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static gboolean -_is_renderer (GstElementFactory * factory) -{ - const gchar *klass, *name; - - klass = gst_element_factory_get_klass (factory); - name = gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory)); - - if (strstr (klass, "Overlay/Subtitle") != NULL || - strstr (klass, "Overlay/SubPicture") != NULL) - return TRUE; - if (strcmp (name, "textoverlay") == 0) - return TRUE; - return FALSE; -} - -static gboolean -_is_parser (GstElementFactory * factory) -{ - const gchar *klass; - - klass = gst_element_factory_get_klass (factory); - - if (strstr (klass, "Parser/Subtitle") != NULL) - return TRUE; - return FALSE; -} - -static const gchar *_sub_pad_names[] = { "subpicture", "subpicture_sink", - "text", "text_sink", - "subtitle_sink", "subtitle" -}; - -static GstCaps * -_get_sub_caps (GstElementFactory * factory) -{ - const GList *templates; - GList *walk; - gboolean is_parser = _is_parser (factory); - - templates = gst_element_factory_get_static_pad_templates (factory); - for (walk = (GList *) templates; walk; walk = g_list_next (walk)) { - GstStaticPadTemplate *templ = walk->data; - - if (templ->direction == GST_PAD_SINK && templ->presence == GST_PAD_ALWAYS) { - gboolean found = FALSE; - - if (is_parser) { - found = TRUE; - } else { - guint i; - - for (i = 0; i < G_N_ELEMENTS (_sub_pad_names); i++) { - if (strcmp (templ->name_template, _sub_pad_names[i]) == 0) { - found = TRUE; - break; - } - } - } - if (found) - return gst_static_caps_get (&templ->static_caps); - } - } - return NULL; -} - -static gboolean -_factory_filter (GstPluginFeature * feature, GstCaps ** subcaps) -{ - GstElementFactory *factory; - guint rank; - const gchar *name; - const GList *templates; - GList *walk; - gboolean is_renderer; - GstCaps *templ_caps = NULL; - gboolean have_video_sink = FALSE; - - /* we only care about element factories */ - if (!GST_IS_ELEMENT_FACTORY (feature)) - return FALSE; - - factory = GST_ELEMENT_FACTORY_CAST (feature); - - /* only select elements with autoplugging rank or textoverlay */ - name = gst_plugin_feature_get_name (feature); - rank = gst_plugin_feature_get_rank (feature); - if (strcmp ("textoverlay", name) != 0 && rank < GST_RANK_MARGINAL) - return FALSE; - - /* Check if it's a renderer or a parser */ - if (_is_renderer (factory)) { - is_renderer = TRUE; - } else if (_is_parser (factory)) { - is_renderer = FALSE; - } else { - return FALSE; - } - - /* Check if there's a video sink in case of a renderer */ - if (is_renderer) { - templates = gst_element_factory_get_static_pad_templates (factory); - for (walk = (GList *) templates; walk; walk = g_list_next (walk)) { - GstStaticPadTemplate *templ = walk->data; - - /* we only care about the always-sink templates */ - if (templ->direction == GST_PAD_SINK && templ->presence == GST_PAD_ALWAYS) { - if (strcmp (templ->name_template, "video") == 0 || - strcmp (templ->name_template, "video_sink") == 0) { - have_video_sink = TRUE; - } - } - } - } - templ_caps = _get_sub_caps (factory); - - if (is_renderer && have_video_sink && templ_caps) { - GstCaps *tmp; - - GST_DEBUG ("Found renderer element %s (%s) with caps %" GST_PTR_FORMAT, - gst_element_factory_get_longname (factory), - gst_plugin_feature_get_name (feature), templ_caps); - tmp = gst_caps_union (*subcaps, templ_caps); - gst_caps_unref (templ_caps); - gst_caps_replace (subcaps, tmp); - gst_caps_unref (tmp); - return TRUE; - } else if (!is_renderer && !have_video_sink && templ_caps) { - GstCaps *tmp; - - GST_DEBUG ("Found parser element %s (%s) with caps %" GST_PTR_FORMAT, - gst_element_factory_get_longname (factory), - gst_plugin_feature_get_name (feature), templ_caps); - tmp = gst_caps_union (*subcaps, templ_caps); - gst_caps_unref (templ_caps); - gst_caps_replace (subcaps, tmp); - gst_caps_unref (tmp); - return TRUE; - } else { - if (templ_caps) - gst_caps_unref (templ_caps); - return FALSE; - } -} - -/* Call with factories_lock! */ -static gboolean -gst_subtitle_overlay_update_factory_list (GstSubtitleOverlay * self) -{ - if (!self->factories - || self->factories_cookie != - gst_default_registry_get_feature_list_cookie ()) { - GstCaps *subcaps; - GList *factories; - - subcaps = gst_caps_new_empty (); - - factories = gst_default_registry_feature_filter ( - (GstPluginFeatureFilter) _factory_filter, FALSE, &subcaps); - GST_DEBUG_OBJECT (self, "Created factory caps: %" GST_PTR_FORMAT, subcaps); - gst_caps_replace (&self->factory_caps, subcaps); - gst_caps_unref (subcaps); - if (self->factories) - gst_plugin_feature_list_free (self->factories); - self->factories = factories; - self->factories_cookie = gst_default_registry_get_feature_list_cookie (); - } - - return (self->factories != NULL); -} - -G_LOCK_DEFINE_STATIC (_factory_caps); -static GstCaps *_factory_caps = NULL; -static guint32 _factory_caps_cookie = 0; - -GstCaps * -gst_subtitle_overlay_create_factory_caps (void) -{ - GList *factories; - GstCaps *subcaps = NULL; - - G_LOCK (_factory_caps); - if (!_factory_caps - || _factory_caps_cookie != - gst_default_registry_get_feature_list_cookie ()) { - if (_factory_caps) - gst_caps_unref (_factory_caps); - _factory_caps = gst_caps_new_empty (); - - factories = gst_default_registry_feature_filter ( - (GstPluginFeatureFilter) _factory_filter, FALSE, &_factory_caps); - GST_DEBUG ("Created factory caps: %" GST_PTR_FORMAT, _factory_caps); - gst_plugin_feature_list_free (factories); - _factory_caps_cookie = gst_default_registry_get_feature_list_cookie (); - } - subcaps = gst_caps_ref (_factory_caps); - G_UNLOCK (_factory_caps); - - return subcaps; -} - -static gboolean -_filter_factories_for_caps (GstElementFactory * factory, const GstCaps * caps) -{ - GstCaps *fcaps = _get_sub_caps (factory); - gboolean ret = (fcaps) ? gst_caps_can_intersect (fcaps, caps) : FALSE; - - if (fcaps) - gst_caps_unref (fcaps); - - if (ret) - gst_object_ref (factory); - return ret; -} - -static gint -_sort_by_ranks (GstPluginFeature * f1, GstPluginFeature * f2) -{ - gint diff; - const gchar *rname1, *rname2; - - diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1); - if (diff != 0) - return diff; - - /* If the ranks are the same sort by name to get deterministic results */ - rname1 = gst_plugin_feature_get_name (f1); - rname2 = gst_plugin_feature_get_name (f2); - - diff = strcmp (rname1, rname2); - - return diff; -} - -static GstPad * -_get_sub_pad (GstElement * element) -{ - GstPad *pad; - guint i; - - for (i = 0; i < G_N_ELEMENTS (_sub_pad_names); i++) { - pad = gst_element_get_static_pad (element, _sub_pad_names[i]); - if (pad) - return pad; - } - return NULL; -} - -static GstPad * -_get_video_pad (GstElement * element) -{ - static const gchar *pad_names[] = { "video", "video_sink" }; - GstPad *pad; - guint i; - - for (i = 0; i < G_N_ELEMENTS (pad_names); i++) { - pad = gst_element_get_static_pad (element, pad_names[i]); - if (pad) - return pad; - } - return NULL; -} - -static gboolean -_create_element (GstSubtitleOverlay * self, GstElement ** element, - const gchar * factory_name, GstElementFactory * factory, - const gchar * element_name, gboolean mandatory) -{ - GstElement *elt; - - g_assert (!factory || !factory_name); - - if (factory_name) { - elt = gst_element_factory_make (factory_name, element_name); - } else { - factory_name = - gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory)); - elt = gst_element_factory_create (factory, element_name); - } - - if (G_UNLIKELY (!elt)) { - if (!factory) { - GstMessage *msg; - - msg = - gst_missing_element_message_new (GST_ELEMENT_CAST (self), - factory_name); - gst_element_post_message (GST_ELEMENT_CAST (self), msg); - - if (mandatory) - GST_ELEMENT_ERROR (self, CORE, MISSING_PLUGIN, (NULL), - ("no '%s' plugin found", factory_name)); - else - GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN, (NULL), - ("no '%s' plugin found", factory_name)); - } else { - if (mandatory) { - GST_ELEMENT_ERROR (self, CORE, FAILED, (NULL), - ("can't instantiate '%s'", factory_name)); - } else { - GST_ELEMENT_WARNING (self, CORE, FAILED, (NULL), - ("can't instantiate '%s'", factory_name)); - } - } - - return FALSE; - } - - if (G_UNLIKELY (gst_element_set_state (elt, - GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS)) { - gst_object_unref (elt); - if (mandatory) { - GST_ELEMENT_ERROR (self, CORE, STATE_CHANGE, (NULL), - ("failed to set '%s' to READY", factory_name)); - } else { - GST_WARNING_OBJECT (self, "Failed to set '%s' to READY", factory_name); - } - return FALSE; - } - - if (G_UNLIKELY (!gst_bin_add (GST_BIN_CAST (self), gst_object_ref (elt)))) { - gst_element_set_state (elt, GST_STATE_NULL); - gst_object_unref (elt); - if (mandatory) { - GST_ELEMENT_ERROR (self, CORE, FAILED, (NULL), - ("failed to add '%s' to subtitleoverlay", factory_name)); - } else { - GST_WARNING_OBJECT (self, "Failed to add '%s' to subtitleoverlay", - factory_name); - } - return FALSE; - } - - gst_element_sync_state_with_parent (elt); - *element = elt; - return TRUE; -} - -static void -_remove_element (GstSubtitleOverlay * self, GstElement ** element) -{ - if (*element) { - gst_bin_remove (GST_BIN_CAST (self), *element); - gst_element_set_state (*element, GST_STATE_NULL); - gst_object_unref (*element); - *element = NULL; - } -} - -static void -_generate_update_newsegment_event (GstSegment * segment, GstEvent ** event1, - GstEvent ** event2) -{ - GstEvent *event; - - *event1 = NULL; - *event2 = NULL; - - event = gst_event_new_new_segment_full (FALSE, segment->rate, - segment->applied_rate, segment->format, 0, segment->accum, 0); - gst_structure_id_set (event->structure, _subtitle_overlay_event_marker_id, - G_TYPE_BOOLEAN, TRUE, NULL); - *event1 = event; - - event = gst_event_new_new_segment_full (FALSE, segment->rate, - segment->applied_rate, segment->format, - segment->start, segment->stop, segment->time); - gst_structure_id_set (event->structure, _subtitle_overlay_event_marker_id, - G_TYPE_BOOLEAN, TRUE, NULL); - *event2 = event; -} - -static gboolean -_setup_passthrough (GstSubtitleOverlay * self) -{ - GstPad *src, *sink; - GstElement *identity; - - GST_DEBUG_OBJECT (self, "Doing video passthrough"); - - if (self->passthrough_identity) { - GST_DEBUG_OBJECT (self, "Already in passthrough mode"); - goto out; - } - - /* Unlink & destroy everything */ - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL); - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL); - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad), NULL); - self->silent_property = NULL; - _remove_element (self, &self->post_colorspace); - _remove_element (self, &self->overlay); - _remove_element (self, &self->parser); - _remove_element (self, &self->renderer); - _remove_element (self, &self->pre_colorspace); - _remove_element (self, &self->passthrough_identity); - - if (G_UNLIKELY (!_create_element (self, &self->passthrough_identity, - "identity", NULL, "passthrough-identity", TRUE))) { - return FALSE; - } - - identity = self->passthrough_identity; - g_object_set (G_OBJECT (identity), "silent", TRUE, "signal-handoffs", FALSE, - NULL); - - /* Set src ghostpad target */ - src = gst_element_get_static_pad (self->passthrough_identity, "src"); - if (G_UNLIKELY (!src)) { - GST_ELEMENT_ERROR (self, CORE, PAD, (NULL), - ("Failed to get srcpad from identity")); - return FALSE; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), - src))) { - GST_ELEMENT_ERROR (self, CORE, PAD, (NULL), - ("Failed to set srcpad target")); - gst_object_unref (src); - return FALSE; - } - gst_object_unref (src); - - sink = gst_element_get_static_pad (self->passthrough_identity, "sink"); - if (G_UNLIKELY (!sink)) { - GST_ELEMENT_ERROR (self, CORE, PAD, (NULL), - ("Failed to get sinkpad from identity")); - return FALSE; - } - - /* Send segment to the identity. This is dropped because identity - * is not linked downstream yet */ - if (self->video_segment.format != GST_FORMAT_UNDEFINED) { - GstEvent *event1, *event2; - - _generate_update_newsegment_event (&self->video_segment, &event1, &event2); - GST_DEBUG_OBJECT (self, - "Pushing video accumulate newsegment event: %" GST_PTR_FORMAT, - event1->structure); - GST_DEBUG_OBJECT (self, - "Pushing video update newsegment event: %" GST_PTR_FORMAT, - event2->structure); - gst_pad_send_event (sink, event1); - gst_pad_send_event (sink, event2); - } - - /* Link sink ghostpads to identity */ - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->video_sinkpad), sink))) { - GST_ELEMENT_ERROR (self, CORE, PAD, (NULL), - ("Failed to set video sinkpad target")); - gst_object_unref (sink); - return FALSE; - } - gst_object_unref (sink); - - GST_DEBUG_OBJECT (self, "Video passthrough setup successfully"); - -out: - /* Unblock pads */ - gst_pad_set_blocked_async_full (self->video_block_pad, FALSE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - if (self->subtitle_sink_blocked) - gst_pad_set_blocked_async_full (self->subtitle_block_pad, FALSE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - return TRUE; -} - -/* Must be called with subtitleoverlay lock! */ -static void -gst_subtitle_overlay_set_fps (GstSubtitleOverlay * self) -{ - GObjectClass *gobject_class; - GParamSpec *pspec; - - if (!self->parser || self->fps_d == 0) - return; - - gobject_class = G_OBJECT_GET_CLASS (self->parser); - pspec = g_object_class_find_property (gobject_class, "video-fps"); - if (!pspec || pspec->value_type != GST_TYPE_FRACTION) - return; - - GST_DEBUG_OBJECT (self, "Updating video-fps property in parser"); - g_object_set (self->parser, "video-fps", self->fps_n, self->fps_d, NULL); -} - -static const gchar * -_get_silent_property (GstElement * element, gboolean * invert) -{ - static const struct - { - const gchar *name; - gboolean invert; - } properties[] = { { - "silent", FALSE}, { - "enable", TRUE}}; - GObjectClass *gobject_class; - GParamSpec *pspec; - guint i; - - gobject_class = G_OBJECT_GET_CLASS (element); - - for (i = 0; i < G_N_ELEMENTS (properties); i++) { - pspec = g_object_class_find_property (gobject_class, properties[i].name); - if (pspec && pspec->value_type == G_TYPE_BOOLEAN) { - *invert = properties[i].invert; - return properties[i].name; - } - } - return NULL; -} - -static gboolean -_has_subtitle_encoding_property (GstElement * element) -{ - GParamSpec *pspec; - - pspec = - g_object_class_find_property (G_OBJECT_GET_CLASS (element), - "subtitle-encoding"); - return (pspec && pspec->value_type == G_TYPE_STRING); -} - -static gboolean -_has_font_desc_property (GstElement * element) -{ - GParamSpec *pspec; - - pspec = - g_object_class_find_property (G_OBJECT_GET_CLASS (element), "font-desc"); - return (pspec && pspec->value_type == G_TYPE_STRING); -} - -static void -_pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (user_data); - GstCaps *subcaps; - GList *l, *factories = NULL; - - GST_DEBUG_OBJECT (pad, "Pad blocked: %d", blocked); - - GST_SUBTITLE_OVERLAY_LOCK (self); - if (pad == self->video_block_pad) - self->video_sink_blocked = blocked; - else if (pad == self->subtitle_block_pad) - self->subtitle_sink_blocked = blocked; - - if (!blocked) { - GST_SUBTITLE_OVERLAY_UNLOCK (self); - return; - } - - /* Now either both or the video sink are blocked */ - - /* Get current subtitle caps */ - subcaps = self->subcaps; - if (!subcaps) { - GstPad *peer; - - peer = gst_pad_get_peer (self->subtitle_sinkpad); - if (peer) { - subcaps = gst_pad_get_negotiated_caps (peer); - if (!subcaps) { - subcaps = gst_pad_get_caps_reffed (peer); - if (!gst_caps_is_fixed (subcaps)) { - gst_caps_unref (subcaps); - subcaps = NULL; - } - } - gst_object_unref (peer); - } - gst_caps_replace (&self->subcaps, subcaps); - if (subcaps) - gst_caps_unref (subcaps); - } - GST_DEBUG_OBJECT (self, "Current subtitle caps: %" GST_PTR_FORMAT, subcaps); - - /* If there are no subcaps but the subtitle sink is blocked upstream - * must behave wrong as there are no fixed caps set for the first - * buffer or in-order event */ - if (G_UNLIKELY (!subcaps && self->subtitle_sink_blocked)) { - GST_ELEMENT_WARNING (self, CORE, NEGOTIATION, (NULL), - ("Subtitle sink is blocked but we have no subtitle caps")); - subcaps = NULL; - } - - if (self->subtitle_error || (self->silent && !self->silent_property)) { - _setup_passthrough (self); - do_async_done (self); - goto out; - } - - /* Now do something with the caps */ - if (subcaps && !self->subtitle_flush) { - GstPad *target = - gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad)); - - if (target && gst_pad_accept_caps (target, subcaps)) { - GST_DEBUG_OBJECT (pad, "Target accepts caps"); - - gst_object_unref (target); - - /* Unblock pads */ - gst_pad_set_blocked_async_full (self->video_block_pad, FALSE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - if (self->subtitle_sink_blocked) - gst_pad_set_blocked_async_full (self->subtitle_block_pad, FALSE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - goto out; - } else if (target) { - gst_object_unref (target); - } - } - - if (self->subtitle_sink_blocked && !self->video_sink_blocked) { - GST_DEBUG_OBJECT (self, "Subtitle sink blocked but video not blocked"); - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - goto out; - } - - self->subtitle_flush = FALSE; - - /* Find our factories */ - g_mutex_lock (self->factories_lock); - gst_subtitle_overlay_update_factory_list (self); - if (subcaps) { - factories = gst_filter_run (self->factories, - (GstFilterFunc) _filter_factories_for_caps, FALSE, subcaps); - if (!factories) { - GstMessage *msg; - - msg = gst_missing_decoder_message_new (GST_ELEMENT_CAST (self), subcaps); - gst_element_post_message (GST_ELEMENT_CAST (self), msg); - GST_ELEMENT_WARNING (self, CORE, MISSING_PLUGIN, (NULL), - ("no suitable subtitle plugin found")); - subcaps = NULL; - self->subtitle_error = TRUE; - } - } - g_mutex_unlock (self->factories_lock); - - if (!subcaps) { - _setup_passthrough (self); - do_async_done (self); - goto out; - } - - /* Now the interesting parts are done: subtitle overlaying! */ - - /* Sort the factories by rank */ - factories = g_list_sort (factories, (GCompareFunc) _sort_by_ranks); - - for (l = factories; l; l = l->next) { - GstElementFactory *factory = l->data; - gboolean is_renderer = _is_renderer (factory); - GstElement *element; - GstPad *sink, *src; - - /* Unlink & destroy everything */ - - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL); - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL); - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad), - NULL); - self->silent_property = NULL; - _remove_element (self, &self->post_colorspace); - _remove_element (self, &self->overlay); - _remove_element (self, &self->parser); - _remove_element (self, &self->renderer); - _remove_element (self, &self->pre_colorspace); - _remove_element (self, &self->passthrough_identity); - - GST_DEBUG_OBJECT (self, "Trying factory '%s'", - GST_STR_NULL (gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST - (factory)))); - - if (G_UNLIKELY ((is_renderer - && !_create_element (self, &self->renderer, NULL, factory, - "renderer", FALSE)) || (!is_renderer - && !_create_element (self, &self->parser, NULL, factory, - "parser", FALSE)))) - continue; - - element = is_renderer ? self->renderer : self->parser; - - /* If this is a parser, create textoverlay and link video and the parser to it - * Else link the renderer to the output colorspace */ - if (!is_renderer) { - GstElement *overlay; - GstPad *video_peer; - - /* Try to get the latest video framerate */ - video_peer = gst_pad_get_peer (self->video_sinkpad); - if (video_peer) { - GstCaps *video_caps; - gint fps_n, fps_d; - - video_caps = gst_pad_get_negotiated_caps (video_peer); - if (!video_caps) { - video_caps = gst_pad_get_caps_reffed (video_peer); - if (!gst_caps_is_fixed (video_caps)) { - gst_caps_unref (video_caps); - video_caps = NULL; - } - } - - if (video_caps - && gst_video_parse_caps_framerate (video_caps, &fps_n, &fps_d)) { - if (self->fps_n != fps_n || self->fps_d != fps_d) { - GST_DEBUG_OBJECT (self, "New video fps: %d/%d", fps_n, fps_d); - self->fps_n = fps_n; - self->fps_d = fps_d; - } - } - - if (video_caps) - gst_caps_unref (video_caps); - gst_object_unref (video_peer); - } - - if (_has_subtitle_encoding_property (self->parser)) - g_object_set (self->parser, "subtitle-encoding", self->encoding, NULL); - - /* Try to set video fps on the parser */ - gst_subtitle_overlay_set_fps (self); - - /* First link everything internally */ - if (G_UNLIKELY (!_create_element (self, &self->overlay, "textoverlay", - NULL, "overlay", FALSE))) { - continue; - } - overlay = self->overlay; - self->silent_property = "silent"; - self->silent_property_invert = FALSE; - - /* Set some properties */ - g_object_set (G_OBJECT (overlay), - "halign", "center", "valign", "bottom", "wait-text", FALSE, NULL); - if (self->font_desc) - g_object_set (G_OBJECT (overlay), "font-desc", self->font_desc, NULL); - - src = gst_element_get_static_pad (element, "src"); - if (G_UNLIKELY (!src)) { - continue; - } - - sink = gst_element_get_static_pad (overlay, "text_sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get text sink from textoverlay"); - gst_object_unref (src); - continue; - } - - if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) { - GST_WARNING_OBJECT (self, "Can't link parser to textoverlay"); - gst_object_unref (sink); - gst_object_unref (src); - continue; - } - gst_object_unref (sink); - gst_object_unref (src); - - if (G_UNLIKELY (!_create_element (self, &self->post_colorspace, - "ffmpegcolorspace", NULL, "post-colorspace", FALSE))) { - continue; - } - - src = gst_element_get_static_pad (overlay, "src"); - if (G_UNLIKELY (!src)) { - GST_WARNING_OBJECT (self, "Can't get src pad from overlay"); - continue; - } - - sink = gst_element_get_static_pad (self->post_colorspace, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get sink pad from ffmpegcolorspace"); - gst_object_unref (src); - continue; - } - - if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) { - GST_WARNING_OBJECT (self, "Can't link overlay with ffmpegcolorspace"); - gst_object_unref (src); - gst_object_unref (sink); - continue; - } - gst_object_unref (src); - gst_object_unref (sink); - - if (G_UNLIKELY (!_create_element (self, &self->pre_colorspace, - "ffmpegcolorspace", NULL, "pre-colorspace", FALSE))) { - continue; - } - - sink = gst_element_get_static_pad (overlay, "video_sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get video sink from textoverlay"); - continue; - } - - src = gst_element_get_static_pad (self->pre_colorspace, "src"); - if (G_UNLIKELY (!src)) { - GST_WARNING_OBJECT (self, "Can't get srcpad from ffmpegcolorspace"); - gst_object_unref (sink); - continue; - } - - if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) { - GST_WARNING_OBJECT (self, "Can't link ffmpegcolorspace to textoverlay"); - gst_object_unref (src); - gst_object_unref (sink); - continue; - } - gst_object_unref (src); - gst_object_unref (sink); - - /* Set src ghostpad target */ - src = gst_element_get_static_pad (self->post_colorspace, "src"); - if (G_UNLIKELY (!src)) { - GST_WARNING_OBJECT (self, "Can't get src pad from ffmpegcolorspace"); - continue; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->srcpad), src))) { - GST_WARNING_OBJECT (self, "Can't set srcpad target"); - gst_object_unref (src); - continue; - } - gst_object_unref (src); - - /* Send segments to the parser/overlay if necessary. These are not sent - * outside this element because of the proxy pad event function */ - if (self->video_segment.format != GST_FORMAT_UNDEFINED) { - GstEvent *event1, *event2; - - sink = gst_element_get_static_pad (self->pre_colorspace, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get sink pad from ffmpegcolorspace"); - continue; - } - - _generate_update_newsegment_event (&self->video_segment, &event1, - &event2); - GST_DEBUG_OBJECT (self, - "Pushing video accumulate newsegment event: %" GST_PTR_FORMAT, - event1->structure); - GST_DEBUG_OBJECT (self, - "Pushing video update newsegment event: %" GST_PTR_FORMAT, - event2->structure); - gst_pad_send_event (sink, event1); - gst_pad_send_event (sink, event2); - - gst_object_unref (sink); - } - - if (self->subtitle_segment.format != GST_FORMAT_UNDEFINED) { - GstEvent *event1, *event2; - - sink = gst_element_get_static_pad (element, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Failed to get subpad"); - continue; - } - - _generate_update_newsegment_event (&self->subtitle_segment, &event1, - &event2); - GST_DEBUG_OBJECT (self, - "Pushing subtitle accumulate newsegment event: %" GST_PTR_FORMAT, - event1->structure); - GST_DEBUG_OBJECT (self, - "Pushing subtitle update newsegment event: %" GST_PTR_FORMAT, - event2->structure); - gst_pad_send_event (sink, event1); - gst_pad_send_event (sink, event2); - - gst_object_unref (sink); - } - - /* Set the sink ghostpad targets */ - sink = gst_element_get_static_pad (self->pre_colorspace, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get sink pad from ffmpegcolorspace"); - continue; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->video_sinkpad), sink))) { - GST_WARNING_OBJECT (self, "Can't set video sinkpad target"); - gst_object_unref (sink); - continue; - } - gst_object_unref (sink); - - /* Link subtitle identity to subtitle pad of our element */ - sink = gst_element_get_static_pad (element, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Failed to get subpad"); - continue; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->subtitle_sinkpad), sink))) { - GST_WARNING_OBJECT (self, "Failed to set subtitle sink target"); - gst_object_unref (sink); - continue; - } - gst_object_unref (sink); - } else { - const gchar *name = - gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (factory)); - - if (strcmp (name, "textoverlay") == 0) { - /* Set some textoverlay specific properties */ - g_object_set (G_OBJECT (element), - "halign", "center", "valign", "bottom", "wait-text", FALSE, NULL); - if (self->font_desc) - g_object_set (G_OBJECT (element), "font-desc", self->font_desc, NULL); - self->silent_property = "silent"; - self->silent_property_invert = FALSE; - } else { - self->silent_property = - _get_silent_property (element, &self->silent_property_invert); - if (_has_subtitle_encoding_property (self->renderer)) - g_object_set (self->renderer, "subtitle-encoding", self->encoding, - NULL); - if (_has_font_desc_property (self->renderer)) - g_object_set (self->renderer, "font-desc", self->font_desc, NULL); - } - - /* First link everything internally */ - if (G_UNLIKELY (!_create_element (self, &self->post_colorspace, - "ffmpegcolorspace", NULL, "post-colorspace", FALSE))) { - continue; - } - - src = gst_element_get_static_pad (element, "src"); - if (G_UNLIKELY (!src)) { - GST_WARNING_OBJECT (self, "Can't get src pad from renderer"); - continue; - } - - sink = gst_element_get_static_pad (self->post_colorspace, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get sink pad from ffmpegcolorspace"); - gst_object_unref (src); - continue; - } - - if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) { - GST_WARNING_OBJECT (self, "Can't link renderer with ffmpegcolorspace"); - gst_object_unref (src); - gst_object_unref (sink); - continue; - } - gst_object_unref (src); - gst_object_unref (sink); - - if (G_UNLIKELY (!_create_element (self, &self->pre_colorspace, - "ffmpegcolorspace", NULL, "pre-colorspace", FALSE))) { - continue; - } - - sink = _get_video_pad (element); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get video sink from renderer"); - continue; - } - - src = gst_element_get_static_pad (self->pre_colorspace, "src"); - if (G_UNLIKELY (!src)) { - GST_WARNING_OBJECT (self, "Can't get srcpad from ffmpegcolorspace"); - gst_object_unref (sink); - continue; - } - - if (G_UNLIKELY (gst_pad_link (src, sink) != GST_PAD_LINK_OK)) { - GST_WARNING_OBJECT (self, "Can't link ffmpegcolorspace to renderer"); - gst_object_unref (src); - gst_object_unref (sink); - continue; - } - gst_object_unref (src); - gst_object_unref (sink); - - /* Set src ghostpad target */ - src = gst_element_get_static_pad (self->post_colorspace, "src"); - if (G_UNLIKELY (!src)) { - GST_WARNING_OBJECT (self, "Can't get src pad from ffmpegcolorspace"); - continue; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->srcpad), src))) { - GST_WARNING_OBJECT (self, "Can't set srcpad target"); - gst_object_unref (src); - continue; - } - gst_object_unref (src); - - /* Send segments to the renderer if necessary. These are not sent - * outside this element because of the proxy pad event handler */ - if (self->video_segment.format != GST_FORMAT_UNDEFINED) { - GstEvent *event1, *event2; - - sink = gst_element_get_static_pad (self->pre_colorspace, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get sink pad from ffmpegcolorspace"); - continue; - } - - _generate_update_newsegment_event (&self->video_segment, &event1, - &event2); - GST_DEBUG_OBJECT (self, - "Pushing video accumulate newsegment event: %" GST_PTR_FORMAT, - event1->structure); - GST_DEBUG_OBJECT (self, - "Pushing video update newsegment event: %" GST_PTR_FORMAT, - event2->structure); - gst_pad_send_event (sink, event1); - gst_pad_send_event (sink, event2); - gst_object_unref (sink); - } - - if (self->subtitle_segment.format != GST_FORMAT_UNDEFINED) { - GstEvent *event1, *event2; - - sink = _get_sub_pad (element); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Failed to get subpad"); - continue; - } - - _generate_update_newsegment_event (&self->subtitle_segment, &event1, - &event2); - GST_DEBUG_OBJECT (self, - "Pushing subtitle accumulate newsegment event: %" GST_PTR_FORMAT, - event1->structure); - GST_DEBUG_OBJECT (self, - "Pushing subtitle update newsegment event: %" GST_PTR_FORMAT, - event2->structure); - gst_pad_send_event (sink, event1); - gst_pad_send_event (sink, event2); - gst_object_unref (sink); - } - - /* Set the sink ghostpad targets */ - sink = gst_element_get_static_pad (self->pre_colorspace, "sink"); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Can't get sink pad from ffmpegcolorspace"); - continue; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->video_sinkpad), sink))) { - GST_WARNING_OBJECT (self, "Can't set video sinkpad target"); - gst_object_unref (sink); - continue; - } - gst_object_unref (sink); - - sink = _get_sub_pad (element); - if (G_UNLIKELY (!sink)) { - GST_WARNING_OBJECT (self, "Failed to get subpad"); - continue; - } - - if (G_UNLIKELY (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST - (self->subtitle_sinkpad), sink))) { - GST_WARNING_OBJECT (self, "Failed to set subtitle sink target"); - gst_object_unref (sink); - continue; - } - gst_object_unref (sink); - } - - break; - } - - if (G_UNLIKELY (l == NULL)) { - GST_ELEMENT_WARNING (self, CORE, FAILED, (NULL), - ("Failed to find any usable factories")); - self->subtitle_error = TRUE; - _setup_passthrough (self); - do_async_done (self); - } else { - GST_DEBUG_OBJECT (self, "Everything worked, unblocking pads"); - gst_pad_set_blocked_async_full (self->video_block_pad, FALSE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - gst_pad_set_blocked_async_full (self->subtitle_block_pad, FALSE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - do_async_done (self); - } - -out: - if (factories) - gst_plugin_feature_list_free (factories); - GST_SUBTITLE_OVERLAY_UNLOCK (self); -} - -static GstStateChangeReturn -gst_subtitle_overlay_change_state (GstElement * element, - GstStateChange transition) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (element); - GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - GST_DEBUG_OBJECT (self, "State change NULL->READY"); - g_mutex_lock (self->factories_lock); - if (G_UNLIKELY (!gst_subtitle_overlay_update_factory_list (self))) { - g_mutex_unlock (self->factories_lock); - return GST_STATE_CHANGE_FAILURE; - } - g_mutex_unlock (self->factories_lock); - - GST_SUBTITLE_OVERLAY_LOCK (self); - /* Set the internal pads to blocking */ - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - break; - case GST_STATE_CHANGE_READY_TO_PAUSED: - GST_DEBUG_OBJECT (self, "State change READY->PAUSED"); - gst_segment_init (&self->video_segment, GST_FORMAT_UNDEFINED); - gst_segment_init (&self->subtitle_segment, GST_FORMAT_UNDEFINED); - - self->fps_n = self->fps_d = 0; - - self->subtitle_flush = FALSE; - self->subtitle_error = FALSE; - - self->downstream_chain_error = FALSE; - - do_async_start (self); - ret = GST_STATE_CHANGE_ASYNC; - - break; - case GST_STATE_CHANGE_PAUSED_TO_PLAYING: - GST_DEBUG_OBJECT (self, "State change PAUSED->PLAYING"); - default: - break; - } - - { - GstStateChangeReturn bret; - - bret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - GST_DEBUG_OBJECT (self, "Base class state changed returned: %d", bret); - if (G_UNLIKELY (bret == GST_STATE_CHANGE_FAILURE)) - return ret; - else if (bret == GST_STATE_CHANGE_ASYNC) - ret = bret; - else if (G_UNLIKELY (bret == GST_STATE_CHANGE_NO_PREROLL)) { - do_async_done (self); - ret = bret; - } - } - - switch (transition) { - case GST_STATE_CHANGE_PLAYING_TO_PAUSED: - GST_DEBUG_OBJECT (self, "State change PLAYING->PAUSED"); - break; - case GST_STATE_CHANGE_PAUSED_TO_READY: - GST_DEBUG_OBJECT (self, "State change PAUSED->READY"); - do_async_done (self); - - break; - case GST_STATE_CHANGE_READY_TO_NULL:{ - GstPad *pad; - - GST_DEBUG_OBJECT (self, "State change READY->NULL"); - - GST_SUBTITLE_OVERLAY_LOCK (self); - gst_caps_replace (&self->subcaps, NULL); - - /* Unlink ghost pads */ - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL); - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL); - gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad), - NULL); - - /* Unblock pads */ - if (self->video_block_pad) { - pad = self->video_block_pad; - gst_pad_set_blocked_async_full (pad, FALSE, _pad_blocked_cb, - gst_object_ref (self), (GDestroyNotify) gst_object_unref); - } - - if (self->subtitle_block_pad) { - pad = self->subtitle_block_pad; - gst_pad_set_blocked_async_full (pad, FALSE, _pad_blocked_cb, - gst_object_ref (self), (GDestroyNotify) gst_object_unref); - } - - /* Remove elements */ - self->silent_property = NULL; - _remove_element (self, &self->post_colorspace); - _remove_element (self, &self->overlay); - _remove_element (self, &self->parser); - _remove_element (self, &self->renderer); - _remove_element (self, &self->pre_colorspace); - _remove_element (self, &self->passthrough_identity); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - - break; - } - default: - break; - } - - return ret; -} - -static void -gst_subtitle_overlay_handle_message (GstBin * bin, GstMessage * message) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (bin); - - if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR) { - GstObject *src = GST_MESSAGE_SRC (message); - - /* Convert error messages from the subtitle pipeline to - * warnings and switch to passthrough mode */ - if (src && ( - (self->overlay - && gst_object_has_ancestor (src, - GST_OBJECT_CAST (self->overlay))) || (self->parser - && gst_object_has_ancestor (src, - GST_OBJECT_CAST (self->parser))) || (self->renderer - && gst_object_has_ancestor (src, - GST_OBJECT_CAST (self->renderer))))) { - GError *err = NULL; - gchar *debug = NULL; - GstMessage *wmsg; - - gst_message_parse_error (message, &err, &debug); - GST_DEBUG_OBJECT (self, - "Got error message from subtitle element %s: %s (%s)", - GST_MESSAGE_SRC_NAME (message), GST_STR_NULL (err->message), - GST_STR_NULL (debug)); - - wmsg = gst_message_new_warning (src, err, debug); - gst_message_unref (message); - g_error_free (err); - g_free (debug); - message = wmsg; - - GST_SUBTITLE_OVERLAY_LOCK (self); - self->subtitle_error = TRUE; - - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - } - } - - GST_BIN_CLASS (parent_class)->handle_message (bin, message); -} - -static void -gst_subtitle_overlay_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (object); - - switch (prop_id) { - case PROP_SILENT: - g_value_set_boolean (value, self->silent); - break; - case PROP_FONT_DESC: - GST_SUBTITLE_OVERLAY_LOCK (self); - g_value_set_string (value, self->font_desc); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - break; - case PROP_SUBTITLE_ENCODING: - GST_SUBTITLE_OVERLAY_LOCK (self); - g_value_set_string (value, self->encoding); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -gst_subtitle_overlay_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (object); - - switch (prop_id) { - case PROP_SILENT: - GST_SUBTITLE_OVERLAY_LOCK (self); - self->silent = g_value_get_boolean (value); - if (self->silent_property) { - gboolean silent = self->silent; - - if (self->silent_property_invert) - silent = !silent; - - if (self->overlay) - g_object_set (self->overlay, self->silent_property, silent, NULL); - else if (self->renderer) - g_object_set (self->renderer, self->silent_property, silent, NULL); - } else { - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - } - GST_SUBTITLE_OVERLAY_UNLOCK (self); - break; - case PROP_FONT_DESC: - GST_SUBTITLE_OVERLAY_LOCK (self); - g_free (self->font_desc); - self->font_desc = g_value_dup_string (value); - if (self->overlay) - g_object_set (self->overlay, "font-desc", self->font_desc, NULL); - else if (self->renderer && _has_font_desc_property (self->renderer)) - g_object_set (self->renderer, "font-desc", self->font_desc, NULL); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - break; - case PROP_SUBTITLE_ENCODING: - GST_SUBTITLE_OVERLAY_LOCK (self); - g_free (self->encoding); - self->encoding = g_value_dup_string (value); - if (self->renderer && _has_subtitle_encoding_property (self->renderer)) - g_object_set (self->renderer, "subtitle-encoding", self->encoding, - NULL); - if (self->parser && _has_subtitle_encoding_property (self->parser)) - g_object_set (self->parser, "subtitle-encoding", self->encoding, NULL); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -gst_subtitle_overlay_base_init (gpointer g_class) -{ - GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class); - - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&srctemplate)); - - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&video_sinktemplate)); - gst_element_class_add_pad_template (gstelement_class, - gst_static_pad_template_get (&subtitle_sinktemplate)); - - gst_element_class_set_details_simple (gstelement_class, "Subtitle Overlay", - "Video/Overlay/Subtitle", - "Overlays a video stream with subtitles", - "Sebastian Dröge <sebastian.droege@collabora.co.uk>"); -} - -static void -gst_subtitle_overlay_class_init (GstSubtitleOverlayClass * klass) -{ - GObjectClass *gobject_class = (GObjectClass *) klass; - GstElementClass *element_class = (GstElementClass *) klass; - GstBinClass *bin_class = (GstBinClass *) klass; - - gobject_class->finalize = gst_subtitle_overlay_finalize; - gobject_class->set_property = gst_subtitle_overlay_set_property; - gobject_class->get_property = gst_subtitle_overlay_get_property; - - g_object_class_install_property (gobject_class, PROP_SILENT, - g_param_spec_boolean ("silent", - "Silent", - "Whether to show subtitles", FALSE, - G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - - g_object_class_install_property (gobject_class, PROP_FONT_DESC, - g_param_spec_string ("font-desc", - "Subtitle font description", - "Pango font description of font " - "to be used for subtitle rendering", NULL, - G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - - g_object_class_install_property (gobject_class, PROP_SUBTITLE_ENCODING, - g_param_spec_string ("subtitle-encoding", "subtitle encoding", - "Encoding to assume if input subtitles are not in UTF-8 encoding. " - "If not set, the GST_SUBTITLE_ENCODING environment variable will " - "be checked for an encoding to use. If that is not set either, " - "ISO-8859-15 will be assumed.", NULL, - G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - - element_class->change_state = - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_change_state); - - bin_class->handle_message = - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_handle_message); -} - -static GstFlowReturn -gst_subtitle_overlay_src_proxy_chain (GstPad * proxypad, GstBuffer * buffer) -{ - GstPad *ghostpad; - GstSubtitleOverlay *self; - GstFlowReturn ret; - - ghostpad = GST_PAD_CAST (gst_pad_get_parent (proxypad)); - if (G_UNLIKELY (!ghostpad)) { - gst_buffer_unref (buffer); - return GST_FLOW_ERROR; - } - self = GST_SUBTITLE_OVERLAY_CAST (gst_pad_get_parent (ghostpad)); - if (G_UNLIKELY (!self || self->srcpad != ghostpad)) { - gst_buffer_unref (buffer); - gst_object_unref (ghostpad); - return GST_FLOW_ERROR; - } - - ret = self->src_proxy_chain (proxypad, buffer); - - if (IS_VIDEO_CHAIN_IGNORE_ERROR (ret)) { - GST_ERROR_OBJECT (self, "Downstream chain error: %s", - gst_flow_get_name (ret)); - self->downstream_chain_error = TRUE; - } - - gst_object_unref (self); - gst_object_unref (ghostpad); - - return ret; -} - -static gboolean -gst_subtitle_overlay_src_proxy_event (GstPad * proxypad, GstEvent * event) -{ - GstPad *ghostpad = NULL; - GstSubtitleOverlay *self = NULL; - gboolean ret = FALSE; - const GstStructure *s; - - ghostpad = GST_PAD_CAST (gst_pad_get_parent (proxypad)); - if (G_UNLIKELY (!ghostpad)) - goto out; - self = GST_SUBTITLE_OVERLAY_CAST (gst_pad_get_parent (ghostpad)); - if (G_UNLIKELY (!self || self->srcpad != ghostpad)) - goto out; - - s = gst_event_get_structure (event); - if (s && gst_structure_id_has_field (s, _subtitle_overlay_event_marker_id)) { - GST_DEBUG_OBJECT (ghostpad, "Dropping event with marker: %" GST_PTR_FORMAT, - event->structure); - gst_event_unref (event); - event = NULL; - ret = TRUE; - } else { - ret = self->src_proxy_event (proxypad, event); - event = NULL; - } - -out: - if (event) - gst_event_unref (event); - if (self) - gst_object_unref (self); - if (ghostpad) - gst_object_unref (ghostpad); - return ret; -} - -static gboolean -gst_subtitle_overlay_video_sink_setcaps (GstPad * pad, GstCaps * caps) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad)); - gboolean ret = TRUE; - gint fps_n, fps_d; - - GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps); - - if (!gst_video_parse_caps_framerate (caps, &fps_n, &fps_d)) { - GST_ERROR_OBJECT (pad, "Failed to parse framerate from caps"); - ret = FALSE; - goto out; - } - - GST_SUBTITLE_OVERLAY_LOCK (self); - if (self->fps_n != fps_n || self->fps_d != fps_d) { - GST_DEBUG_OBJECT (self, "New video fps: %d/%d", fps_n, fps_d); - self->fps_n = fps_n; - self->fps_d = fps_d; - gst_subtitle_overlay_set_fps (self); - } - GST_SUBTITLE_OVERLAY_UNLOCK (self); - - ret = self->video_sink_setcaps (pad, caps); - -out: - gst_object_unref (self); - return ret; -} - -static gboolean -gst_subtitle_overlay_video_sink_event (GstPad * pad, GstEvent * event) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad)); - gboolean ret; - - if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) { - GST_DEBUG_OBJECT (pad, - "Resetting video segment because of flush-stop event"); - gst_segment_init (&self->video_segment, GST_FORMAT_UNDEFINED); - self->fps_n = self->fps_d = 0; - } - - ret = self->video_sink_event (pad, gst_event_ref (event)); - - if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) { - gboolean update; - gdouble rate, applied_rate; - GstFormat format; - gint64 start, stop, position; - - GST_DEBUG_OBJECT (pad, "Newsegment event: %" GST_PTR_FORMAT, - event->structure); - gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate, - &format, &start, &stop, &position); - - if (format != GST_FORMAT_TIME) { - GST_ERROR_OBJECT (pad, "Newsegment event in non-time format: %s", - gst_format_get_name (format)); - gst_object_unref (event); - gst_object_unref (self); - return FALSE; - } - - GST_DEBUG_OBJECT (pad, "Old video segment: %" GST_SEGMENT_FORMAT, - &self->video_segment); - gst_segment_set_newsegment_full (&self->video_segment, update, rate, - applied_rate, format, start, stop, position); - GST_DEBUG_OBJECT (pad, "New video segment: %" GST_SEGMENT_FORMAT, - &self->video_segment); - } - - gst_event_unref (event); - gst_object_unref (self); - return ret; -} - -static GstFlowReturn -gst_subtitle_overlay_video_sink_chain (GstPad * pad, GstBuffer * buffer) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (GST_PAD_PARENT (pad)); - GstFlowReturn ret = self->video_sink_chain (pad, buffer); - - if (G_UNLIKELY (self->downstream_chain_error) || self->passthrough_identity) { - return ret; - } else if (IS_VIDEO_CHAIN_IGNORE_ERROR (ret)) { - GST_DEBUG_OBJECT (self, "Subtitle renderer produced chain error: %s", - gst_flow_get_name (ret)); - GST_SUBTITLE_OVERLAY_LOCK (self); - self->subtitle_error = TRUE; - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - - return GST_FLOW_OK; - } - - return ret; -} - -static GstFlowReturn -gst_subtitle_overlay_subtitle_sink_chain (GstPad * pad, GstBuffer * buffer) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (GST_PAD_PARENT (pad)); - - if (self->subtitle_error) { - gst_buffer_unref (buffer); - return GST_FLOW_OK; - } else { - GstFlowReturn ret = self->subtitle_sink_chain (pad, buffer); - - if (IS_SUBTITLE_CHAIN_IGNORE_ERROR (ret)) { - GST_DEBUG_OBJECT (self, "Subtitle chain error: %s", - gst_flow_get_name (ret)); - GST_SUBTITLE_OVERLAY_LOCK (self); - self->subtitle_error = TRUE; - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - - return GST_FLOW_OK; - } - - return ret; - } -} - -static GstCaps * -gst_subtitle_overlay_subtitle_sink_getcaps (GstPad * pad) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad)); - GstCaps *ret; - - g_mutex_lock (self->factories_lock); - if (G_UNLIKELY (!gst_subtitle_overlay_update_factory_list (self))) - ret = GST_CAPS_NONE; - else - ret = gst_caps_ref (self->factory_caps); - g_mutex_unlock (self->factories_lock); - - GST_DEBUG_OBJECT (pad, "Returning subtitle caps %" GST_PTR_FORMAT, ret); - - gst_object_unref (self); - - return ret; -} - -static gboolean -gst_subtitle_overlay_subtitle_sink_acceptcaps (GstPad * pad, GstCaps * caps) -{ - GstCaps *othercaps = gst_subtitle_overlay_subtitle_sink_getcaps (pad); - gboolean ret = gst_caps_can_intersect (caps, othercaps); - - gst_caps_unref (othercaps); - - return ret; -} - -static gboolean -gst_subtitle_overlay_subtitle_sink_setcaps (GstPad * pad, GstCaps * caps) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad)); - gboolean ret = TRUE; - GstPad *target = NULL;; - - GST_DEBUG_OBJECT (pad, "Setting caps: %" GST_PTR_FORMAT, caps); - - target = - gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad)); - - GST_SUBTITLE_OVERLAY_LOCK (self); - gst_caps_replace (&self->subcaps, caps); - - if (target && gst_pad_accept_caps (target, caps)) { - GST_DEBUG_OBJECT (pad, "Target accepts caps"); - ret = self->subtitle_sink_setcaps (pad, caps); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - goto out; - } - - GST_DEBUG_OBJECT (pad, "Target did not accept caps"); - - self->subtitle_error = FALSE; - - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - -out: - if (target) - gst_object_unref (target); - gst_object_unref (self); - return ret; -} - -static GstPadLinkReturn -gst_subtitle_overlay_subtitle_sink_link (GstPad * pad, GstPad * peer) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad)); - GstPadLinkReturn ret; - GstCaps *caps; - - GST_DEBUG_OBJECT (pad, "Linking pad to peer %" GST_PTR_FORMAT, peer); - - caps = gst_pad_get_negotiated_caps (peer); - if (!caps) { - caps = gst_pad_get_caps_reffed (peer); - if (!gst_caps_is_fixed (caps)) { - gst_caps_unref (caps); - caps = NULL; - } - } - - if (caps) { - GST_SUBTITLE_OVERLAY_LOCK (self); - GST_DEBUG_OBJECT (pad, "Have fixed peer caps: %" GST_PTR_FORMAT, caps); - gst_caps_replace (&self->subcaps, caps); - - self->subtitle_error = FALSE; - - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - gst_caps_unref (caps); - } - - ret = self->subtitle_sink_link (pad, peer); - - gst_object_unref (self); - return ret; -} - -static void -gst_subtitle_overlay_subtitle_sink_unlink (GstPad * pad) -{ - GstSubtitleOverlay *self = - GST_SUBTITLE_OVERLAY (gst_object_ref (GST_PAD_PARENT (pad))); - - /* FIXME: Can't use gst_pad_get_parent() here because this is called with - * the object lock from state changes - */ - - GST_DEBUG_OBJECT (pad, "Pad unlinking"); - gst_caps_replace (&self->subcaps, NULL); - - self->subtitle_sink_unlink (pad); - - GST_SUBTITLE_OVERLAY_LOCK (self); - self->subtitle_error = FALSE; - - if (self->subtitle_block_pad) - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - - if (self->video_block_pad) - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - - gst_object_unref (self); -} - -static gboolean -gst_subtitle_overlay_subtitle_sink_event (GstPad * pad, GstEvent * event) -{ - GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY (gst_pad_get_parent (pad)); - gboolean ret; - GstFormat format; - - if (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_DOWNSTREAM_OOB && - event->structure - && strcmp (gst_structure_get_name (event->structure), - "subtitleoverlay-flush-subtitle") == 0) { - GST_DEBUG_OBJECT (pad, "Custom subtitle flush event"); - GST_SUBTITLE_OVERLAY_LOCK (self); - self->subtitle_flush = TRUE; - self->subtitle_error = FALSE; - if (self->subtitle_block_pad) - gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - if (self->video_block_pad) - gst_pad_set_blocked_async_full (self->video_block_pad, TRUE, - _pad_blocked_cb, gst_object_ref (self), - (GDestroyNotify) gst_object_unref); - GST_SUBTITLE_OVERLAY_UNLOCK (self); - - gst_event_unref (event); - event = NULL; - ret = TRUE; - goto out; - } else if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) { - gst_event_parse_new_segment_full (event, NULL, NULL, NULL, - &format, NULL, NULL, NULL); - if (self->subtitle_segment.format != GST_FORMAT_UNDEFINED && - self->subtitle_segment.format != format) { - GST_DEBUG_OBJECT (pad, "Subtitle segment format changed: %s -> %s", - gst_format_get_name (self->subtitle_segment.format), - gst_format_get_name (format)); - gst_segment_init (&self->subtitle_segment, GST_FORMAT_UNDEFINED); - } - } - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_FLUSH_STOP: - GST_DEBUG_OBJECT (pad, - "Resetting subtitle segment because of flush-stop"); - gst_segment_init (&self->subtitle_segment, GST_FORMAT_UNDEFINED); - /* fall through */ - case GST_EVENT_FLUSH_START: - case GST_EVENT_NEWSEGMENT: - case GST_EVENT_EOS: - /* Add our event marker to make sure no events from here go ever outside - * the element, they're only interesting for our internal elements */ - event = - GST_EVENT_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST - (event))); - if (!event->structure) { - event->structure = - gst_structure_id_empty_new (_subtitle_overlay_event_marker_id); - gst_structure_set_parent_refcount (event->structure, - &event->mini_object.refcount); - } - gst_structure_id_set (event->structure, _subtitle_overlay_event_marker_id, - G_TYPE_BOOLEAN, TRUE, NULL); - break; - default: - break; - } - - ret = self->subtitle_sink_event (pad, gst_event_ref (event)); - - if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) { - gboolean update; - gdouble rate, applied_rate; - gint64 start, stop, position; - - GST_DEBUG_OBJECT (pad, "Newsegment event: %" GST_PTR_FORMAT, - event->structure); - gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate, - &format, &start, &stop, &position); - - GST_DEBUG_OBJECT (pad, "Old subtitle segment: %" GST_SEGMENT_FORMAT, - &self->subtitle_segment); - if (self->subtitle_segment.format != format) { - GST_DEBUG_OBJECT (pad, "Subtitle segment format changed: %s -> %s", - gst_format_get_name (self->subtitle_segment.format), - gst_format_get_name (format)); - gst_segment_init (&self->subtitle_segment, format); - } - - gst_segment_set_newsegment_full (&self->subtitle_segment, update, rate, - applied_rate, format, start, stop, position); - GST_DEBUG_OBJECT (pad, "New subtitle segment: %" GST_SEGMENT_FORMAT, - &self->subtitle_segment); - } - gst_event_unref (event); - -out: - gst_object_unref (self); - return ret; -} - -static void -gst_subtitle_overlay_init (GstSubtitleOverlay * self, - GstSubtitleOverlayClass * klass) -{ - GstPadTemplate *templ; - GstIterator *it; - GstPad *proxypad = NULL; - - self->lock = g_mutex_new (); - self->factories_lock = g_mutex_new (); - - templ = gst_static_pad_template_get (&srctemplate); - self->srcpad = gst_ghost_pad_new_no_target_from_template ("src", templ); - it = gst_pad_iterate_internal_links (self->srcpad); - if (G_UNLIKELY (!it - || gst_iterator_next (it, (gpointer) & proxypad) != GST_ITERATOR_OK - || proxypad == NULL)) { - GST_ERROR_OBJECT (self, "Failed to get proxypad of srcpad"); - } else { - self->src_proxy_event = GST_PAD_EVENTFUNC (proxypad); - gst_pad_set_event_function (proxypad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_src_proxy_event)); - self->src_proxy_chain = GST_PAD_CHAINFUNC (proxypad); - gst_pad_set_chain_function (proxypad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_src_proxy_chain)); - gst_object_unref (proxypad); - } - if (it) - gst_iterator_free (it); - - gst_element_add_pad (GST_ELEMENT_CAST (self), self->srcpad); - - templ = gst_static_pad_template_get (&video_sinktemplate); - self->video_sinkpad = - gst_ghost_pad_new_no_target_from_template ("video_sink", templ); - self->video_sink_event = GST_PAD_EVENTFUNC (self->video_sinkpad); - gst_pad_set_event_function (self->video_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_video_sink_event)); - self->video_sink_setcaps = GST_PAD_SETCAPSFUNC (self->video_sinkpad); - gst_pad_set_setcaps_function (self->video_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_video_sink_setcaps)); - self->video_sink_chain = GST_PAD_CHAINFUNC (self->video_sinkpad); - gst_pad_set_chain_function (self->video_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_video_sink_chain)); - - proxypad = NULL; - it = gst_pad_iterate_internal_links (self->video_sinkpad); - if (G_UNLIKELY (!it - || gst_iterator_next (it, (gpointer) & proxypad) != GST_ITERATOR_OK - || proxypad == NULL)) { - GST_ERROR_OBJECT (self, - "Failed to get internally linked pad from video sinkpad"); - } - if (it) - gst_iterator_free (it); - self->video_block_pad = proxypad; - gst_element_add_pad (GST_ELEMENT_CAST (self), self->video_sinkpad); - - templ = gst_static_pad_template_get (&subtitle_sinktemplate); - self->subtitle_sinkpad = - gst_ghost_pad_new_no_target_from_template ("subtitle_sink", templ); - self->subtitle_sink_link = GST_PAD_LINKFUNC (self->subtitle_sinkpad); - gst_pad_set_link_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_link)); - self->subtitle_sink_unlink = GST_PAD_UNLINKFUNC (self->subtitle_sinkpad); - gst_pad_set_unlink_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_unlink)); - self->subtitle_sink_event = GST_PAD_EVENTFUNC (self->subtitle_sinkpad); - gst_pad_set_event_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_event)); - self->subtitle_sink_setcaps = GST_PAD_SETCAPSFUNC (self->subtitle_sinkpad); - gst_pad_set_setcaps_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_setcaps)); - self->subtitle_sink_chain = GST_PAD_CHAINFUNC (self->subtitle_sinkpad); - gst_pad_set_chain_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_chain)); - gst_pad_set_getcaps_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_getcaps)); - gst_pad_set_acceptcaps_function (self->subtitle_sinkpad, - GST_DEBUG_FUNCPTR (gst_subtitle_overlay_subtitle_sink_acceptcaps)); - gst_pad_set_bufferalloc_function (self->subtitle_sinkpad, NULL); - - proxypad = NULL; - it = gst_pad_iterate_internal_links (self->subtitle_sinkpad); - if (G_UNLIKELY (!it - || gst_iterator_next (it, (gpointer) & proxypad) != GST_ITERATOR_OK - || proxypad == NULL)) { - GST_ERROR_OBJECT (self, - "Failed to get internally linked pad from subtitle sinkpad"); - } - if (it) - gst_iterator_free (it); - self->subtitle_block_pad = proxypad; - - gst_element_add_pad (GST_ELEMENT_CAST (self), self->subtitle_sinkpad); - - self->fps_n = 0; - self->fps_d = 0; -} - -gboolean -gst_subtitle_overlay_plugin_init (GstPlugin * plugin) -{ - GST_DEBUG_CATEGORY_INIT (subtitle_overlay_debug, "subtitleoverlay", 0, - "Subtitle Overlay"); - - _subtitle_overlay_event_marker_id = - g_quark_from_static_string ("gst-subtitle-overlay-event-marker"); - - return gst_element_register (plugin, "subtitleoverlay", GST_RANK_NONE, - GST_TYPE_SUBTITLE_OVERLAY); -} |