2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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-playbin
25 * Playbin provides a stand-alone everything-in-one abstraction for an
26 * audio and/or video player.
29 * It can handle both audio and video files and features
32 * automatic file type recognition and based on that automatic
33 * selection and usage of the right audio/video/subtitle demuxers/decoders
36 * visualisations for audio files
39 * subtitle support for video files
42 * stream selection between different audio/subtitles streams
45 * meta info (tag) extraction
48 * easy access to the last video frame
51 * buffering when playing streams over a network
58 * <title>Usage</title>
60 * A playbin element can be created just like any other element using
61 * gst_element_factory_make(). The file/URI to play should be set via the "uri"
62 * property. This must be an absolute URI, relative file paths are not allowed.
63 * Example URIs are file:///home/joe/movie.avi or http://www.joedoe.com/foo.ogg
66 * Playbin is a #GstPipeline. It will notify the application of everything
67 * that's happening (errors, end of stream, tags found, state changes, etc.)
68 * by posting messages on its #GstBus. The application needs to watch the
72 * Playback can be initiated by setting the element to PLAYING state using
73 * gst_element_set_state(). Note that the state change will take place in
74 * the background in a separate thread, when the function returns playback
75 * is probably not happening yet and any errors might not have occured yet.
76 * Applications using playbin should ideally be written to deal with things
77 * completely asynchroneous.
80 * When playback has finished (an EOS message has been received on the bus)
81 * or an error has occured (an ERROR message has been received on the bus) or
82 * the user wants to play a different track, playbin should be set back to
83 * READY or NULL state, then the "uri" property should be set to the new
84 * location and then playbin be set to PLAYING state again.
87 * Seeking can be done using gst_element_seek_simple() or gst_element_seek()
88 * on the playbin element. Again, the seek will not be executed
89 * instantaneously, but will be done in a background thread. When the seek
90 * call returns the seek will most likely still be in process. An application
91 * may wait for the seek to finish (or fail) using gst_element_get_state() with
92 * -1 as the timeout, but this will block the user interface and is not
96 * Applications may query the current position and duration of the stream
97 * via gst_element_query_position() and gst_element_query_duration() and
98 * setting the format passed to GST_FORMAT_TIME. If the query was successful,
99 * the duration or position will have been returned in units of nanoseconds.
101 * <title>Advanced Usage: specifying the audio and video sink</title>
103 * By default, if no audio sink or video sink has been specified via the
104 * "audio-sink" or "video-sink" property, playbin will use the autoaudiosink
105 * and autovideosink elements to find the first-best available output method.
106 * This should work in most cases, but is not always desirable. Often either
107 * the user or application might want to specify more explicitly what to use
108 * for audio and video output.
111 * If the application wants more control over how audio or video should be
112 * output, it may create the audio/video sink elements itself (for example
113 * using gst_element_factory_make()) and provide them to playbin using the
114 * "audio-sink" or "video-sink" property.
117 * GNOME-based applications, for example, will usually want to create
118 * gconfaudiosink and gconfvideosink elements and make playbin use those,
119 * so that output happens to whatever the user has configured in the GNOME
120 * Multimedia System Selector confinguration dialog.
123 * The sink elements do not necessarily need to be ready-made sinks. It is
124 * possible to create container elements that look like a sink to playbin,
125 * but in reality contain a number of custom elements linked together. This
126 * can be achieved by creating a #GstBin and putting elements in there and
127 * linking them, and then creating a sink #GstGhostPad for the bin and pointing
128 * it to the sink pad of the first element within the bin. This can be used
129 * for a number of purposes, for example to force output to a particular
130 * format or to modify or observe the data before it is output.
133 * It is also possible to 'suppress' audio and/or video output by using
134 * 'fakesink' elements (or capture it from there using the fakesink element's
135 * "handoff" signal, which, nota bene, is fired from the streaming thread!).
137 * <title>Retrieving Tags and Other Meta Data</title>
139 * Most of the common meta data (artist, title, etc.) can be retrieved by
140 * watching for TAG messages on the pipeline's bus (see above).
143 * Other more specific meta information like width/height/framerate of video
144 * streams or samplerate/number of channels of audio streams can be obtained
145 * using the "stream-info" property, which will return a GList of stream info
146 * objects, one for each stream. These are opaque objects that can only be
147 * accessed via the standard GObject property interface, ie. g_object_get().
148 * Each stream info object has the following properties:
150 * <listitem>"object" (GstObject) (the decoder source pad usually)</listitem>
151 * <listitem>"type" (enum) (if this is an audio/video/subtitle stream)</listitem>
152 * <listitem>"decoder" (string) (name of decoder used to decode this stream)</listitem>
153 * <listitem>"mute" (boolean) (to mute or unmute this stream)</listitem>
154 * <listitem>"caps" (GstCaps) (caps of the decoded stream)</listitem>
155 * <listitem>"language-code" (string) (ISO-639 language code for this stream, mostly used for audio/subtitle streams)</listitem>
156 * <listitem>"codec" (string) (format this stream was encoded in)</listitem>
158 * Stream information from the stream-info properties is best queried once
159 * playbin has changed into PAUSED or PLAYING state (which can be detected
160 * via a state-changed message on the bus where old_state=READY and
161 * new_state=PAUSED), since before that the list might not be complete yet or
162 * not contain all available information (like language-codes).
164 * <title>Buffering</title>
166 * Playbin handles buffering automatically for the most part, but applications
167 * need to handle parts of the buffering process as well. Whenever playbin is
168 * buffering, it will post BUFFERING messages on the bus with a percentage
169 * value that shows the progress of the buffering process. Applications need
170 * to set playbin to PLAYING or PAUSED state in response to these messages.
171 * They may also want to convey the buffering progress to the user in some
172 * way. Here is how to extract the percentage information from the message
173 * (requires GStreamer >= 0.10.11):
177 * switch (GST_MESSAGE_TYPE (msg)) {
178 * case GST_MESSAGE_BUFFERING: {
180 * gst_message_parse_buffering (msg, &percent);
181 * g_print ("Buffering (%%u percent done)", percent);
187 * Note that applications should keep/set the pipeline in the PAUSED state when
188 * a BUFFERING message is received with a buffer percent value < 100 and set
189 * the pipeline back to PLAYING state when a BUFFERING message with a value
190 * of 100 percent is received (if PLAYING is the desired state, that is).
192 * <title>Embedding the video window in your application</title>
194 * By default, playbin (or rather the video sinks used) will create their own
195 * window. Applications will usually want to force output to a window of their
196 * own, however. This can be done using the GstXOverlay interface, which most
197 * video sinks implement. See the documentation there for more details.
199 * <title>Specifying which CD/DVD device to use</title>
201 * The device to use for CDs/DVDs needs to be set on the source element
202 * playbin creates before it is opened. The only way to do this at the moment
203 * is to connect to playbin's "notify::source" signal, which will be emitted
204 * by playbin when it has created the source element for a particular URI.
205 * In the signal callback you can check if the source element has a "device"
206 * property and set it appropriately. In future ways might be added to specify
207 * the device as part of the URI, but at the time of writing this is not
210 * <title>Examples</title>
212 * Here is a simple pipeline to play back a video or audio file:
214 * gst-launch -v playbin uri=file:///path/to/somefile.avi
216 * This will play back the given AVI video file, given that the video and
217 * audio decoders required to decode the content are installed. Since no
218 * special audio sink or video sink is supplied (not possible via gst-launch),
219 * playbin will try to find a suitable audio and video sink automatically
220 * using the autoaudiosink and autovideosink elements.
223 * Here is a another pipeline to play track 4 of an audio CD:
225 * gst-launch -v playbin uri=cdda://4
227 * This will play back track 4 on an audio CD in your disc drive (assuming
228 * the drive is detected automatically by the plugin).
231 * Here is a another pipeline to play title 1 of a DVD:
233 * gst-launch -v playbin uri=dvd://1
235 * This will play back title 1 of a DVD in your disc drive (assuming
236 * the drive is detected automatically by the plugin).
248 #include <gst/gst-i18n-plugin.h>
249 #include <gst/pbutils/pbutils.h>
251 #include "gstplaybasebin.h"
253 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
254 #define GST_CAT_DEFAULT gst_play_bin_debug
256 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
257 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
258 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
259 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
260 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
262 #define VOLUME_MAX_DOUBLE 10.0
264 typedef struct _GstPlayBin GstPlayBin;
265 typedef struct _GstPlayBinClass GstPlayBinClass;
270 * High-level player element
274 GstPlayBaseBin parent;
276 /* the configurable elements */
277 GstElement *fakesink;
278 GstElement *audio_sink;
279 GstElement *video_sink;
280 GstElement *visualisation;
281 GstElement *pending_visualisation;
282 GstElement *volume_element;
283 GstElement *textoverlay_element;
286 /* these are the currently active sinks */
289 /* the last captured frame for snapshots */
292 /* our cache for the sinks */
295 /* font description */
298 /* indication if the pipeline is live */
302 struct _GstPlayBinClass
304 GstPlayBaseBinClass parent_class;
325 static void gst_play_bin_class_init (GstPlayBinClass * klass);
326 static void gst_play_bin_init (GstPlayBin * play_bin);
327 static void gst_play_bin_dispose (GObject * object);
329 static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
330 GstPlayBaseGroup * group);
331 static void remove_sinks (GstPlayBin * play_bin);
332 static void playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin,
334 static void playbin_set_audio_mute (GstPlayBaseBin * play_base_bin,
337 static void gst_play_bin_set_property (GObject * object, guint prop_id,
338 const GValue * value, GParamSpec * spec);
339 static void gst_play_bin_get_property (GObject * object, guint prop_id,
340 GValue * value, GParamSpec * spec);
342 static gboolean gst_play_bin_send_event (GstElement * element,
344 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
345 GstStateChange transition);
347 static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
349 static GstElementClass *parent_class;
351 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
353 static const GstElementDetails gst_play_bin_details =
354 GST_ELEMENT_DETAILS ("Player Bin",
355 "Generic/Bin/Player",
356 "Autoplug and play media from an uri",
357 "Wim Taymans <wim.taymans@gmail.com>");
360 gst_play_bin_get_type (void)
362 static GType gst_play_bin_type = 0;
364 if (!gst_play_bin_type) {
365 static const GTypeInfo gst_play_bin_info = {
366 sizeof (GstPlayBinClass),
369 (GClassInitFunc) gst_play_bin_class_init,
374 (GInstanceInitFunc) gst_play_bin_init,
378 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
379 "GstPlayBin", &gst_play_bin_info, 0);
382 return gst_play_bin_type;
386 gst_play_bin_class_init (GstPlayBinClass * klass)
388 GObjectClass *gobject_klass;
389 GstElementClass *gstelement_klass;
390 GstBinClass *gstbin_klass;
391 GstPlayBaseBinClass *playbasebin_klass;
393 gobject_klass = (GObjectClass *) klass;
394 gstelement_klass = (GstElementClass *) klass;
395 gstbin_klass = (GstBinClass *) klass;
396 playbasebin_klass = (GstPlayBaseBinClass *) klass;
398 parent_class = g_type_class_peek_parent (klass);
400 gobject_klass->set_property = gst_play_bin_set_property;
401 gobject_klass->get_property = gst_play_bin_get_property;
403 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
404 g_param_spec_object ("video-sink", "Video Sink",
405 "the video output element to use (NULL = default sink)",
406 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
407 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
408 g_param_spec_object ("audio-sink", "Audio Sink",
409 "the audio output element to use (NULL = default sink)",
410 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
411 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
412 g_param_spec_object ("vis-plugin", "Vis plugin",
413 "the visualization element to use (NULL = none)",
414 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
415 g_object_class_install_property (gobject_klass, ARG_VOLUME,
416 g_param_spec_double ("volume", "volume", "volume",
417 0.0, VOLUME_MAX_DOUBLE, 1.0,
418 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
419 g_object_class_install_property (gobject_klass, ARG_FRAME,
420 gst_param_spec_mini_object ("frame", "Frame",
421 "The last frame (NULL = no video available)", GST_TYPE_BUFFER,
422 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
423 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
424 g_param_spec_string ("subtitle-font-desc", "Subtitle font description",
425 "Pango font description of font " "to be used for subtitle rendering",
426 NULL, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
428 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
430 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
432 gstelement_klass->change_state =
433 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
434 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
436 gstbin_klass->handle_message =
437 GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
439 playbasebin_klass->setup_output_pads = setup_sinks;
440 playbasebin_klass->set_subtitles_visible = playbin_set_subtitles_visible;
441 playbasebin_klass->set_audio_mute = playbin_set_audio_mute;
445 gst_play_bin_init (GstPlayBin * play_bin)
447 play_bin->video_sink = NULL;
448 play_bin->audio_sink = NULL;
449 play_bin->visualisation = NULL;
450 play_bin->pending_visualisation = NULL;
451 play_bin->volume_element = NULL;
452 play_bin->textoverlay_element = NULL;
453 play_bin->volume = 1.0;
454 play_bin->sinks = NULL;
455 play_bin->frame = NULL;
456 play_bin->font_desc = NULL;
457 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
458 NULL, (GDestroyNotify) gst_object_unref);
462 gst_play_bin_dispose (GObject * object)
464 GstPlayBin *play_bin;
466 play_bin = GST_PLAY_BIN (object);
468 if (play_bin->cache != NULL) {
469 remove_sinks (play_bin);
470 g_hash_table_destroy (play_bin->cache);
471 play_bin->cache = NULL;
474 if (play_bin->audio_sink != NULL) {
475 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
476 gst_object_unref (play_bin->audio_sink);
477 play_bin->audio_sink = NULL;
479 if (play_bin->video_sink != NULL) {
480 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
481 gst_object_unref (play_bin->video_sink);
482 play_bin->video_sink = NULL;
484 if (play_bin->visualisation != NULL) {
485 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
486 gst_object_unref (play_bin->visualisation);
487 play_bin->visualisation = NULL;
489 if (play_bin->pending_visualisation != NULL) {
490 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
491 gst_object_unref (play_bin->pending_visualisation);
492 play_bin->pending_visualisation = NULL;
494 if (play_bin->textoverlay_element != NULL) {
495 gst_object_unref (play_bin->textoverlay_element);
496 play_bin->textoverlay_element = NULL;
498 g_free (play_bin->font_desc);
499 play_bin->font_desc = NULL;
501 G_OBJECT_CLASS (parent_class)->dispose (object);
505 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
508 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
510 if (play_bin->pending_visualisation)
511 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
516 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
519 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
520 GstBin *vis_bin = NULL;
521 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
523 GstElement *pending_visualisation;
525 GST_OBJECT_LOCK (play_bin);
526 pending_visualisation = play_bin->pending_visualisation;
527 play_bin->pending_visualisation = NULL;
528 GST_OBJECT_UNLOCK (play_bin);
530 /* We want to disable visualisation */
531 if (!GST_IS_ELEMENT (pending_visualisation)) {
532 /* Set visualisation element to READY */
533 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
538 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
541 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
545 vis_src_pad = gst_element_get_static_pad (play_bin->visualisation, "src");
546 vis_sink_pad = gst_pad_get_peer (tee_pad);
548 /* Can be fakesink */
549 if (GST_IS_PAD (vis_src_pad)) {
550 vqueue_pad = gst_pad_get_peer (vis_src_pad);
553 if (!GST_IS_PAD (vis_sink_pad)) {
557 /* Check the bin's state */
558 GST_OBJECT_LOCK (vis_bin);
559 bin_state = GST_STATE (vis_bin);
560 GST_OBJECT_UNLOCK (vis_bin);
563 gst_pad_unlink (tee_pad, vis_sink_pad);
564 gst_object_unref (vis_sink_pad);
567 if (GST_IS_PAD (vqueue_pad)) {
568 gst_pad_unlink (vis_src_pad, vqueue_pad);
569 gst_object_unref (vis_src_pad);
573 /* Remove from vis_bin */
574 gst_bin_remove (vis_bin, play_bin->visualisation);
575 /* Set state to NULL */
576 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
577 /* And loose our ref */
578 gst_object_unref (play_bin->visualisation);
580 if (pending_visualisation) {
581 /* Ref this new visualisation element before adding to the bin */
582 gst_object_ref (pending_visualisation);
583 /* Add the new one */
584 gst_bin_add (vis_bin, pending_visualisation);
585 /* Synchronizing state */
586 gst_element_set_state (pending_visualisation, bin_state);
588 vis_sink_pad = gst_element_get_static_pad (pending_visualisation, "sink");
589 vis_src_pad = gst_element_get_static_pad (pending_visualisation, "src");
591 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
596 gst_pad_link (tee_pad, vis_sink_pad);
597 gst_pad_link (vis_src_pad, vqueue_pad);
601 gst_object_unref (play_bin->visualisation);
602 play_bin->visualisation = pending_visualisation;
606 gst_object_unref (vis_sink_pad);
609 gst_object_unref (vis_src_pad);
612 gst_object_unref (vqueue_pad);
615 gst_object_unref (vis_bin);
618 /* Unblock the pad */
619 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
624 gst_play_bin_set_property (GObject * object, guint prop_id,
625 const GValue * value, GParamSpec * pspec)
627 GstPlayBin *play_bin;
629 play_bin = GST_PLAY_BIN (object);
633 if (play_bin->video_sink != NULL) {
634 gst_object_unref (play_bin->video_sink);
636 play_bin->video_sink = g_value_get_object (value);
637 if (play_bin->video_sink != NULL) {
638 gst_object_ref (play_bin->video_sink);
639 gst_object_sink (GST_OBJECT_CAST (play_bin->video_sink));
641 /* when changing the videosink, we just remove the
642 * video pipeline from the cache so that it will be
643 * regenerated with the new sink element */
644 g_hash_table_remove (play_bin->cache, "vbin");
647 if (play_bin->audio_sink != NULL) {
648 gst_object_unref (play_bin->audio_sink);
650 play_bin->audio_sink = g_value_get_object (value);
651 if (play_bin->audio_sink != NULL) {
652 gst_object_ref (play_bin->audio_sink);
653 gst_object_sink (GST_OBJECT_CAST (play_bin->audio_sink));
655 g_hash_table_remove (play_bin->cache, "abin");
659 GstElement *pending_visualisation =
660 GST_ELEMENT_CAST (g_value_get_object (value));
663 if (pending_visualisation) {
664 gst_object_ref (pending_visualisation);
665 gst_object_sink (pending_visualisation);
668 /* Do we already have a visualisation change pending ? */
669 GST_OBJECT_LOCK (play_bin);
670 if (play_bin->pending_visualisation) {
671 gst_object_unref (play_bin->pending_visualisation);
672 play_bin->pending_visualisation = pending_visualisation;
673 GST_OBJECT_UNLOCK (play_bin);
675 GST_OBJECT_UNLOCK (play_bin);
676 /* Was there a visualisation already set ? */
677 if (play_bin->visualisation != NULL) {
678 GstBin *vis_bin = NULL;
681 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
684 /* Check if the visualisation is already in a bin */
685 if (GST_IS_BIN (vis_bin)) {
686 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
688 /* Now get tee pad and block it async */
689 vis_sink_pad = gst_element_get_static_pad (play_bin->visualisation,
691 if (!GST_IS_PAD (vis_sink_pad)) {
694 tee_pad = gst_pad_get_peer (vis_sink_pad);
695 if (!GST_IS_PAD (tee_pad)) {
699 play_bin->pending_visualisation = pending_visualisation;
700 /* Block with callback */
701 gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
705 gst_object_unref (vis_sink_pad);
708 gst_object_unref (tee_pad);
710 gst_object_unref (vis_bin);
712 play_bin->visualisation = pending_visualisation;
715 play_bin->visualisation = pending_visualisation;
721 play_bin->volume = g_value_get_double (value);
722 if (play_bin->volume_element) {
723 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
724 play_bin->volume, NULL);
728 g_free (play_bin->font_desc);
729 play_bin->font_desc = g_strdup (g_value_get_string (value));
730 if (play_bin->textoverlay_element) {
731 g_object_set (G_OBJECT (play_bin->textoverlay_element),
732 "font-desc", g_value_get_string (value), NULL);
736 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
742 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
745 GstPlayBin *play_bin;
747 play_bin = GST_PLAY_BIN (object);
751 g_value_set_object (value, play_bin->video_sink);
754 g_value_set_object (value, play_bin->audio_sink);
757 g_value_set_object (value, play_bin->visualisation);
760 g_value_set_double (value, play_bin->volume);
763 GstBuffer *cur_frame = NULL;
765 gst_buffer_replace (&cur_frame, play_bin->frame);
766 gst_value_take_buffer (value, cur_frame);
770 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
775 /* signal fired when the identity has received a new buffer. This is used for
776 * making screenshots.
779 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
781 GstPlayBin *play_bin = GST_PLAY_BIN (data);
783 /* applications need to know the buffer caps,
784 * make sure they are always set on the frame */
785 if (GST_BUFFER_CAPS (frame) == NULL) {
788 if ((pad = gst_element_get_static_pad (identity, "sink"))) {
789 gst_buffer_set_caps (frame, GST_PAD_CAPS (pad));
790 gst_object_unref (pad);
794 gst_buffer_replace (&play_bin->frame, frame);
798 post_missing_element_message (GstPlayBin * playbin, const gchar * name)
802 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playbin), name);
803 gst_element_post_message (GST_ELEMENT_CAST (playbin), msg);
806 /* make the element (bin) that contains the elements needed to perform
807 * video display. We connect a handoff signal to identity so that we
808 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
810 * +-------------------------------------------------------------+
812 * | +--------+ +----------+ +----------+ +---------+ |
813 * | |identity| |colorspace| |videoscale| |videosink| |
814 * | +-sink src-sink src-sink src-sink | |
815 * | | +---+----+ +----------+ +----------+ +---------+ |
817 * +----------|--------------------------------------------------+
821 gen_video_element (GstPlayBin * play_bin)
828 GstElement *identity;
831 /* first see if we have it in the cache */
832 element = g_hash_table_lookup (play_bin->cache, "vbin");
833 if (element != NULL) {
837 if (play_bin->video_sink) {
838 sink = play_bin->video_sink;
840 sink = gst_element_factory_make ("autovideosink", "videosink");
842 sink = gst_element_factory_make ("xvimagesink", "videosink");
847 gst_object_ref (sink);
848 g_hash_table_insert (play_bin->cache, "video_sink", sink);
850 /* create a bin to hold objects, as we create them we add them to this bin so
851 * that when something goes wrong we only need to unref the bin */
852 element = gst_bin_new ("vbin");
853 gst_bin_add (GST_BIN_CAST (element), sink);
855 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
858 gst_bin_add (GST_BIN_CAST (element), conv);
860 scale = gst_element_factory_make ("videoscale", "vscale");
863 gst_bin_add (GST_BIN_CAST (element), scale);
865 identity = gst_element_factory_make ("identity", "id");
866 g_object_set (identity, "silent", TRUE, NULL);
867 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
868 gst_bin_add (GST_BIN_CAST (element), identity);
870 gst_element_link_pads (identity, "src", conv, "sink");
871 gst_element_link_pads (conv, "src", scale, "sink");
872 /* be more careful with the pad from the custom sink element, it might not
874 if (!gst_element_link_pads (scale, "src", sink, NULL))
877 pad = gst_element_get_static_pad (identity, "sink");
878 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
879 gst_object_unref (pad);
881 gst_element_set_state (element, GST_STATE_READY);
883 /* since we're gonna add it to a bin but don't want to lose it,
884 * we keep a reference. */
885 gst_object_ref (element);
886 g_hash_table_insert (play_bin->cache, "vbin", element);
893 post_missing_element_message (play_bin, "autovideosink");
894 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
895 (_("Both autovideosink and xvimagesink elements are missing.")),
901 post_missing_element_message (play_bin, "ffmpegcolorspace");
902 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
903 (_("Missing element '%s' - check your GStreamer installation."),
904 "ffmpegcolorspace"), (NULL));
905 gst_object_unref (element);
911 post_missing_element_message (play_bin, "videoscale");
912 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
913 (_("Missing element '%s' - check your GStreamer installation."),
914 "videoscale"), ("possibly a liboil version mismatch?"));
915 gst_object_unref (element);
920 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
921 (NULL), ("Failed to configure the video sink."));
922 gst_object_unref (element);
927 /* make an element for playback of video with subtitles embedded.
929 * +--------------------------------------------------+
930 * | tbin +-------------+ |
931 * | +-----+ | textoverlay | +------+ |
932 * | | csp | +--video_sink | | vbin | |
933 * video_sink-sink src+ +-text_sink src-sink | |
934 * | +-----+ | +-------------+ +------+ |
935 * text_sink-------------+ |
936 * +--------------------------------------------------+
938 * If there is no subtitle renderer this function will simply return the
939 * videosink without the text_sink pad.
942 gen_text_element (GstPlayBin * play_bin)
944 GstElement *element, *csp, *overlay, *vbin;
947 /* Create the video rendering bin, error is posted when this fails. */
948 vbin = gen_video_element (play_bin);
953 overlay = gst_element_factory_make ("textoverlay", "overlay");
955 /* If no overlay return the video bin without subtitle support. */
960 element = gst_bin_new ("textbin");
962 /* Set some parameters */
963 g_object_set (G_OBJECT (overlay),
964 "halign", "center", "valign", "bottom", NULL);
965 if (play_bin->font_desc) {
966 g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
970 play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
972 /* we know this will succeed, as the video bin already created one before */
973 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
975 /* Add our elements */
976 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
979 gst_element_link_pads (csp, "src", overlay, "video_sink");
980 gst_element_link_pads (overlay, "src", vbin, "sink");
982 /* Add ghost pads on the subtitle bin */
983 pad = gst_element_get_static_pad (overlay, "text_sink");
984 gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
985 gst_object_unref (pad);
987 pad = gst_element_get_static_pad (csp, "sink");
988 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
989 gst_object_unref (pad);
991 /* Set state to READY */
992 gst_element_set_state (element, GST_STATE_READY);
999 post_missing_element_message (play_bin, "textoverlay");
1000 GST_WARNING_OBJECT (play_bin,
1001 "No overlay (pango) element, subtitles disabled");
1006 /* make the element (bin) that contains the elements needed to perform
1009 * +-------------------------------------------------------------+
1011 * | +---------+ +----------+ +---------+ +---------+ |
1012 * | |audioconv| |audioscale| | volume | |audiosink| |
1013 * | +-sink src-sink src-sink src-sink | |
1014 * | | +---------+ +----------+ +---------+ +---------+ |
1016 * +-------------------------------------------------------------+
1019 gen_audio_element (GstPlayBin * play_bin)
1022 GstElement *element;
1029 element = g_hash_table_lookup (play_bin->cache, "abin");
1030 if (element != NULL)
1033 if (play_bin->audio_sink) {
1034 sink = play_bin->audio_sink;
1036 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
1038 sink = gst_element_factory_make ("alsasink", "audiosink");
1043 play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
1046 gst_object_ref (sink);
1047 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
1049 element = gst_bin_new ("abin");
1050 gst_bin_add (GST_BIN_CAST (element), sink);
1052 conv = gst_element_factory_make ("audioconvert", "aconv");
1054 goto no_audioconvert;
1055 gst_bin_add (GST_BIN_CAST (element), conv);
1057 scale = gst_element_factory_make ("audioresample", "aresample");
1059 goto no_audioresample;
1060 gst_bin_add (GST_BIN_CAST (element), scale);
1062 volume = gst_element_factory_make ("volume", "volume");
1065 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
1066 play_bin->volume_element = volume;
1067 gst_bin_add (GST_BIN_CAST (element), volume);
1069 res = gst_element_link_pads (conv, "src", scale, "sink");
1070 res &= gst_element_link_pads (scale, "src", volume, "sink");
1071 res &= gst_element_link_pads (volume, "src", sink, NULL);
1075 pad = gst_element_get_static_pad (conv, "sink");
1076 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1077 gst_object_unref (pad);
1079 gst_element_set_state (element, GST_STATE_READY);
1081 /* since we're gonna add it to a bin but don't want to lose it,
1082 * we keep a reference. */
1083 gst_object_ref (element);
1084 g_hash_table_insert (play_bin->cache, "abin", element);
1091 post_missing_element_message (play_bin, "autoaudiosink");
1092 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1093 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
1098 post_missing_element_message (play_bin, "audioconvert");
1099 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1100 (_("Missing element '%s' - check your GStreamer installation."),
1101 "audioconvert"), ("possibly a liboil version mismatch?"));
1102 gst_object_unref (element);
1107 post_missing_element_message (play_bin, "audioresample");
1108 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1109 (_("Missing element '%s' - check your GStreamer installation."),
1110 "audioresample"), ("possibly a liboil version mismatch?"));
1111 gst_object_unref (element);
1116 post_missing_element_message (play_bin, "volume");
1117 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1118 (_("Missing element '%s' - check your GStreamer installation."),
1119 "volume"), ("possibly a liboil version mismatch?"));
1120 gst_object_unref (element);
1125 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1126 (NULL), ("Failed to configure the audio sink."));
1127 gst_object_unref (element);
1132 /* make the element (bin) that contains the elements needed to perform
1133 * visualisation ouput. The idea is to split the audio using tee, then
1134 * sending the output to the regular audio bin and the other output to
1135 * the vis plugin that transforms it into a video that is rendered with the
1136 * normal video bin. The video and audio bins are run in threads to make sure
1137 * they don't block eachother.
1139 * +-----------------------------------------------------------------------+
1141 * | +------+ +--------+ +----------------+ |
1142 * | | tee | | aqueue | | abin ... | |
1143 * | +-sink src-sink src-sink | |
1144 * | | | | +--------+ +----------------+ |
1146 * | | | | +------+ +------------+ +------+ +-----------+ |
1147 * | | | | |vqueue| | audioconv | | vis | | vbin ... | |
1148 * | | | src-sink src-sink + samp src-sink src-sink | |
1149 * | | | | +------+ +------------+ +------+ +-----------+ |
1153 * +-----------------------------------------------------------------------+
1156 gen_vis_element (GstPlayBin * play_bin)
1159 GstElement *element;
1167 GstElement *vqueue, *aqueue;
1170 /* errors are already posted when these fail. */
1171 asink = gen_audio_element (play_bin);
1174 vsink = gen_video_element (play_bin);
1176 gst_object_unref (asink);
1180 element = gst_bin_new ("visbin");
1181 tee = gst_element_factory_make ("tee", "tee");
1183 vqueue = gst_element_factory_make ("queue", "vqueue");
1184 aqueue = gst_element_factory_make ("queue", "aqueue");
1186 gst_bin_add (GST_BIN_CAST (element), asink);
1187 gst_bin_add (GST_BIN_CAST (element), vqueue);
1188 gst_bin_add (GST_BIN_CAST (element), aqueue);
1189 gst_bin_add (GST_BIN_CAST (element), vsink);
1190 gst_bin_add (GST_BIN_CAST (element), tee);
1192 conv = gst_element_factory_make ("audioconvert", "aconv");
1194 goto no_audioconvert;
1195 gst_bin_add (GST_BIN_CAST (element), conv);
1197 resamp = gst_element_factory_make ("audioresample", "aresamp");
1199 goto no_audioresample;
1200 gst_bin_add (GST_BIN_CAST (element), resamp);
1202 conv2 = gst_element_factory_make ("audioconvert", "aconv2");
1204 goto no_audioconvert;
1205 gst_bin_add (GST_BIN_CAST (element), conv2);
1207 if (play_bin->visualisation) {
1208 gst_object_ref (play_bin->visualisation);
1209 vis = play_bin->visualisation;
1211 vis = gst_element_factory_make ("goom", "vis");
1215 gst_bin_add (GST_BIN_CAST (element), vis);
1217 res = gst_element_link_pads (vqueue, "src", conv, "sink");
1218 res &= gst_element_link_pads (conv, "src", resamp, "sink");
1219 res &= gst_element_link_pads (resamp, "src", conv2, "sink");
1220 res &= gst_element_link_pads (conv2, "src", vis, "sink");
1221 res &= gst_element_link_pads (vis, "src", vsink, "sink");
1225 pad = gst_element_get_static_pad (aqueue, "sink");
1226 rpad = gst_element_get_request_pad (tee, "src%d");
1227 gst_pad_link (rpad, pad);
1228 gst_object_unref (rpad);
1229 gst_object_unref (pad);
1230 gst_element_link_pads (aqueue, "src", asink, "sink");
1232 pad = gst_element_get_static_pad (vqueue, "sink");
1233 rpad = gst_element_get_request_pad (tee, "src%d");
1234 gst_pad_link (rpad, pad);
1235 gst_object_unref (rpad);
1236 gst_object_unref (pad);
1238 pad = gst_element_get_static_pad (tee, "sink");
1239 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1240 gst_object_unref (pad);
1247 post_missing_element_message (play_bin, "audioconvert");
1248 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1249 (_("Missing element '%s' - check your GStreamer installation."),
1250 "audioconvert"), ("possibly a liboil version mismatch?"));
1251 gst_object_unref (element);
1256 post_missing_element_message (play_bin, "audioresample");
1257 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1258 (_("Missing element '%s' - check your GStreamer installation."),
1259 "audioresample"), (NULL));
1260 gst_object_unref (element);
1265 post_missing_element_message (play_bin, "goom");
1266 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1267 (_("Missing element '%s' - check your GStreamer installation."),
1269 gst_object_unref (element);
1274 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1275 (NULL), ("Failed to configure the visualisation element."));
1276 gst_object_unref (element);
1281 /* get rid of all installed sinks */
1283 remove_sinks (GstPlayBin * play_bin)
1287 GstElement *element;
1290 if (play_bin->cache == NULL)
1293 GST_DEBUG ("removesinks");
1294 element = g_hash_table_lookup (play_bin->cache, "abin");
1295 if (element != NULL) {
1296 parent = gst_element_get_parent (element);
1297 if (parent != NULL) {
1298 /* we remove the element from the parent so that
1299 * there is no unwanted state change when the parent
1301 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1302 gst_element_set_state (element, GST_STATE_NULL);
1303 gst_bin_remove (GST_BIN_CAST (parent), element);
1304 gst_object_unref (parent);
1306 pad = gst_element_get_static_pad (element, "sink");
1308 peer = gst_pad_get_peer (pad);
1310 gst_pad_unlink (peer, pad);
1311 gst_object_unref (peer);
1313 gst_object_unref (pad);
1316 element = g_hash_table_lookup (play_bin->cache, "vbin");
1317 if (element != NULL) {
1318 parent = gst_element_get_parent (element);
1319 if (parent != NULL) {
1320 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1321 gst_element_set_state (element, GST_STATE_NULL);
1322 gst_bin_remove (GST_BIN_CAST (parent), element);
1323 gst_object_unref (parent);
1325 pad = gst_element_get_static_pad (element, "sink");
1327 peer = gst_pad_get_peer (pad);
1329 gst_pad_unlink (peer, pad);
1330 gst_object_unref (peer);
1332 gst_object_unref (pad);
1336 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
1337 GstElement *element = GST_ELEMENT_CAST (sinks->data);
1341 pad = gst_element_get_static_pad (element, "sink");
1343 GST_LOG ("removing sink %p", element);
1345 peer = gst_pad_get_peer (pad);
1347 gst_pad_unlink (peer, pad);
1348 gst_object_unref (peer);
1350 gst_object_unref (pad);
1352 gst_element_set_state (element, GST_STATE_NULL);
1353 gst_bin_remove (GST_BIN_CAST (play_bin), element);
1355 g_list_free (play_bin->sinks);
1356 play_bin->sinks = NULL;
1358 if (play_bin->visualisation) {
1359 GstElement *vis_bin;
1362 GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
1364 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
1367 gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
1368 gst_object_unref (vis_bin);
1372 if (play_bin->frame) {
1373 gst_buffer_unref (play_bin->frame);
1374 play_bin->frame = NULL;
1377 if (play_bin->textoverlay_element) {
1378 gst_object_unref (play_bin->textoverlay_element);
1379 play_bin->textoverlay_element = NULL;
1383 /* loop over the streams and set up the pipeline to play this
1384 * media file. First we count the number of audio and video streams.
1385 * If there is no video stream but there exists an audio stream,
1386 * we install a visualisation pipeline.
1388 * Also make sure to only connect the first audio and video pad. FIXME
1389 * this should eventually be handled with a tuner interface so that
1390 * one can switch the streams.
1392 * This function takes ownership of @sink.*
1395 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
1396 GstPad * subtitle_pad)
1399 GstPadLinkReturn linkres;
1401 GstStateChangeReturn stateret;
1404 g_return_val_if_fail (sink != NULL, FALSE);
1406 state = GST_STATE_PAUSED;
1408 /* this is only for debugging */
1409 parent = gst_pad_get_parent_element (srcpad);
1411 GST_DEBUG ("Adding sink %" GST_PTR_FORMAT
1412 " with state %d (parent: %d, peer: %d)", sink,
1413 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
1414 gst_object_unref (parent);
1416 gst_bin_add (GST_BIN_CAST (play_bin), sink);
1418 /* bring it to the required state so we can link to the peer without
1419 * breaking the flow */
1420 stateret = gst_element_set_state (sink, state);
1421 if (stateret == GST_STATE_CHANGE_FAILURE)
1424 /* we found a sink for this stream, now try to install it */
1425 sinkpad = gst_element_get_static_pad (sink, "sink");
1426 linkres = gst_pad_link (srcpad, sinkpad);
1427 gst_object_unref (sinkpad);
1429 /* try to link the pad of the sink to the stream */
1430 if (GST_PAD_LINK_FAILED (linkres))
1433 if (GST_IS_PAD (subtitle_pad)) {
1434 sinkpad = gst_element_get_static_pad (sink, "text_sink");
1435 linkres = gst_pad_link (subtitle_pad, sinkpad);
1436 gst_object_unref (sinkpad);
1439 /* try to link the subtitle pad of the sink to the stream, this is not
1441 if (GST_PAD_LINK_FAILED (linkres))
1442 goto subtitle_failed;
1445 /* we got the sink succesfully linked, now keep the sink
1446 * in our internal list */
1447 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
1454 gst_element_set_state (sink, GST_STATE_NULL);
1455 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1456 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1464 /* could not link this stream */
1465 caps = gst_pad_get_caps (srcpad);
1466 capsstr = gst_caps_to_string (caps);
1467 g_warning ("could not link %s: %d", capsstr, linkres);
1468 GST_DEBUG_OBJECT (play_bin,
1469 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1471 gst_caps_unref (caps);
1473 gst_element_set_state (sink, GST_STATE_NULL);
1474 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1481 /* could not link this stream */
1482 caps = gst_pad_get_caps (subtitle_pad);
1483 GST_WARNING_OBJECT (play_bin, "subtitle link failed when adding sink, "
1484 "caps = %" GST_PTR_FORMAT ", reason %d", caps, linkres);
1485 gst_caps_unref (caps);
1493 dummy_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
1498 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1500 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1501 gboolean need_vis = FALSE;
1502 gboolean need_text = FALSE;
1503 GstPad *textsrcpad = NULL, *pad = NULL, *origtextsrcpad = NULL;
1505 gboolean res = TRUE;
1507 /* get rid of existing sinks */
1508 if (play_bin->sinks) {
1509 remove_sinks (play_bin);
1511 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1513 /* find out what to do */
1514 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
1515 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1517 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
1518 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1519 play_bin->visualisation != NULL) {
1523 /* now actually connect everything */
1526 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1528 sink = gen_vis_element (play_bin);
1530 sink = gen_audio_element (play_bin);
1536 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_AUDIO -
1538 res = add_sink (play_bin, sink, pad, NULL);
1539 gst_object_unref (pad);
1543 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
1545 GstObject *parent = NULL, *grandparent = NULL;
1546 GstPad *ghost = NULL;
1548 sink = gen_text_element (play_bin);
1550 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_TEXT -
1553 /* This pad is from subtitle-bin, we need to create a ghost pad to have
1554 common grandparents */
1555 parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
1557 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
1558 gst_object_unref (textsrcpad);
1563 grandparent = gst_object_get_parent (parent);
1565 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
1566 gst_object_unref (parent);
1567 gst_object_unref (textsrcpad);
1572 /* We ghost the pad on subtitle_bin only, if the text pad is from the
1573 media demuxer we keep it as it is */
1574 if (!GST_IS_PLAY_BIN (grandparent)) {
1575 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
1576 "file, ghosting to a suitable hierarchy");
1577 /* Block the pad first, because as soon as we add a ghostpad, the queue
1578 * will try and start pushing */
1579 gst_pad_set_blocked_async (textsrcpad, TRUE, dummy_blocked_cb, NULL);
1580 origtextsrcpad = gst_object_ref (textsrcpad);
1582 ghost = gst_ghost_pad_new ("text_src", textsrcpad);
1583 if (!GST_IS_PAD (ghost)) {
1584 GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
1586 gst_object_unref (parent);
1587 gst_object_unref (grandparent);
1588 gst_object_unref (textsrcpad);
1593 gst_pad_set_active (ghost, TRUE);
1594 if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
1595 gst_object_unref (textsrcpad);
1596 textsrcpad = gst_object_ref (ghost);
1598 GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
1599 gst_pad_set_active (ghost, FALSE);
1600 gst_object_unref (ghost);
1601 gst_object_unref (textsrcpad);
1605 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
1606 "no changes to hierarchy needed");
1609 gst_object_unref (parent);
1610 gst_object_unref (grandparent);
1612 sink = gen_video_element (play_bin);
1618 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_VIDEO -
1620 res = add_sink (play_bin, sink, pad, textsrcpad);
1621 gst_object_unref (pad);
1623 gst_object_unref (textsrcpad);
1624 if (origtextsrcpad) {
1625 gst_pad_set_blocked_async (origtextsrcpad, FALSE, dummy_blocked_cb, NULL);
1626 gst_object_unref (origtextsrcpad);
1630 /* remove the sinks now, pipeline get_state will now wait for the
1631 * sinks to preroll */
1632 if (play_bin->fakesink) {
1633 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1634 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1635 play_bin->fakesink = NULL;
1642 playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin, gboolean visible)
1644 GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
1646 /* we're ignoring the case of someone setting the 'current-text' property
1647 * before textoverlay is set up (which is probably okay, since playbasebin
1648 * will just select the first subtitle stream as active stream regardless) */
1649 if (playbin->textoverlay_element != NULL) {
1650 GST_LOG_OBJECT (playbin, "setting subtitle visibility to %d", visible);
1651 g_object_set (playbin->textoverlay_element, "silent", !visible, NULL);
1656 playbin_set_audio_mute (GstPlayBaseBin * play_base_bin, gboolean mute)
1658 GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
1660 if (playbin->volume_element) {
1661 g_object_set (G_OBJECT (playbin->volume_element), "mute", mute, NULL);
1665 /* Send an event to our sinks until one of them works; don't then send to the
1666 * remaining sinks (unlike GstBin)
1669 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1671 GList *sinks = play_bin->sinks;
1672 gboolean res = TRUE;
1675 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1677 gst_event_ref (event);
1678 if ((res = gst_element_send_event (sink, event))) {
1679 GST_DEBUG_OBJECT (play_bin,
1680 "Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
1683 GST_DEBUG_OBJECT (play_bin,
1684 "Event failed when sent to sink %" GST_PTR_FORMAT, sink);
1686 sinks = g_list_next (sinks);
1689 gst_event_unref (event);
1694 /* We only want to send the event to a single sink (overriding GstBin's
1695 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1696 * events appropriately. So, this is a messy duplication of code. */
1698 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1700 gboolean res = FALSE;
1701 GstEventType event_type = GST_EVENT_TYPE (event);
1703 switch (event_type) {
1704 case GST_EVENT_SEEK:
1705 GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
1706 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1709 res = parent_class->send_event (element, event);
1717 value_list_append_structure_list (GValue * list_val, GstStructure ** first,
1718 GList * structure_list)
1722 for (l = structure_list; l != NULL; l = l->next) {
1723 GValue val = { 0, };
1726 *first = gst_structure_copy ((GstStructure *) l->data);
1728 g_value_init (&val, GST_TYPE_STRUCTURE);
1729 g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
1730 gst_value_list_append_value (list_val, &val);
1731 g_value_unset (&val);
1735 /* if it's a redirect message with multiple redirect locations we might
1736 * want to pick a different 'best' location depending on the required
1737 * bitrates and the connection speed */
1739 gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
1741 const GValue *locations_list, *location_val;
1742 GstMessage *new_msg;
1743 GstStructure *new_structure = NULL;
1744 GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
1745 GValue new_list = { 0, };
1747 GstPlayBaseBin *playbasebin = GST_PLAY_BASE_BIN (playbin);
1748 guint connection_speed = playbasebin->connection_speed;
1750 GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
1751 GST_DEBUG_OBJECT (playbin, "connection speed: %u", connection_speed);
1753 if (connection_speed == 0 || msg->structure == NULL)
1756 locations_list = gst_structure_get_value (msg->structure, "locations");
1757 if (locations_list == NULL)
1760 size = gst_value_list_get_size (locations_list);
1764 /* maintain existing order as much as possible, just sort references
1765 * with too high a bitrate to the end (the assumption being that if
1766 * bitrates are given they are given for all interesting streams and
1767 * that the you-need-at-least-version-xyz redirect has the same bitrate
1768 * as the lowest referenced redirect alternative) */
1769 for (i = 0; i < size; ++i) {
1770 const GstStructure *s;
1773 location_val = gst_value_list_get_value (locations_list, i);
1774 s = (const GstStructure *) g_value_get_boxed (location_val);
1775 if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
1776 GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
1777 l_neutral = g_list_append (l_neutral, (gpointer) s);
1778 } else if (bitrate > connection_speed) {
1779 GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
1780 l_bad = g_list_append (l_bad, (gpointer) s);
1781 } else if (bitrate <= connection_speed) {
1782 GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
1783 l_good = g_list_append (l_good, (gpointer) s);
1787 g_value_init (&new_list, GST_TYPE_LIST);
1788 value_list_append_structure_list (&new_list, &new_structure, l_good);
1789 value_list_append_structure_list (&new_list, &new_structure, l_neutral);
1790 value_list_append_structure_list (&new_list, &new_structure, l_bad);
1791 gst_structure_set_value (new_structure, "locations", &new_list);
1792 g_value_unset (&new_list);
1794 g_list_free (l_good);
1795 g_list_free (l_neutral);
1796 g_list_free (l_bad);
1798 new_msg = gst_message_new_element (msg->src, new_structure);
1799 gst_message_unref (msg);
1801 GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
1806 gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
1808 if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
1809 && gst_structure_has_name (msg->structure, "redirect")) {
1810 msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
1813 GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
1816 static GstStateChangeReturn
1817 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1819 GstStateChangeReturn ret;
1820 GstPlayBin *play_bin;
1822 play_bin = GST_PLAY_BIN (element);
1825 switch (transition) {
1826 case GST_STATE_CHANGE_READY_TO_PAUSED:
1827 /* this really is the easiest way to make the state change return
1828 * ASYNC until we added the sinks */
1829 if (!play_bin->fakesink) {
1830 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1831 gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
1838 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1839 if (ret == GST_STATE_CHANGE_FAILURE)
1842 switch (transition) {
1843 case GST_STATE_CHANGE_READY_TO_PAUSED:
1844 /* remember us being a live pipeline */
1845 play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
1846 GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
1848 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1849 /* FIXME Release audio device when we implement that */
1851 case GST_STATE_CHANGE_PAUSED_TO_READY:
1852 case GST_STATE_CHANGE_READY_TO_NULL:
1853 /* remove sinks we added */
1854 remove_sinks (play_bin);
1855 /* and there might be a fakesink we need to clean up now */
1856 if (play_bin->fakesink) {
1857 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1858 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1859 play_bin->fakesink = NULL;
1870 gst_play_bin_plugin_init (GstPlugin * plugin)
1872 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1874 return gst_element_register (plugin, "playbin", GST_RANK_NONE,