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
263 #define CONNECTION_SPEED_DEFAULT 0
265 typedef struct _GstPlayBin GstPlayBin;
266 typedef struct _GstPlayBinClass GstPlayBinClass;
270 GstPlayBaseBin parent;
272 /* the configurable elements */
273 GstElement *fakesink;
274 GstElement *audio_sink;
275 GstElement *video_sink;
276 GstElement *visualisation;
277 GstElement *pending_visualisation;
278 GstElement *volume_element;
279 GstElement *textoverlay_element;
282 /* these are the currently active sinks */
285 /* the last captured frame for snapshots */
288 /* our cache for the sinks */
291 /* font description */
294 /* connection speed in bits/sec (0 = unknown) */
295 guint connection_speed;
297 /* indication if the pipeline is live */
301 struct _GstPlayBinClass
303 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);
333 static void gst_play_bin_set_property (GObject * object, guint prop_id,
334 const GValue * value, GParamSpec * spec);
335 static void gst_play_bin_get_property (GObject * object, guint prop_id,
336 GValue * value, GParamSpec * spec);
338 static gboolean gst_play_bin_send_event (GstElement * element,
340 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
341 GstStateChange transition);
343 static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
345 static GstElementClass *parent_class;
347 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
349 static const GstElementDetails gst_play_bin_details =
350 GST_ELEMENT_DETAILS ("Player Bin",
351 "Generic/Bin/Player",
352 "Autoplug and play media from an uri",
353 "Wim Taymans <wim@fluendo.com>");
356 gst_play_bin_get_type (void)
358 static GType gst_play_bin_type = 0;
360 if (!gst_play_bin_type) {
361 static const GTypeInfo gst_play_bin_info = {
362 sizeof (GstPlayBinClass),
365 (GClassInitFunc) gst_play_bin_class_init,
370 (GInstanceInitFunc) gst_play_bin_init,
374 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
375 "GstPlayBin", &gst_play_bin_info, 0);
378 return gst_play_bin_type;
382 gst_play_bin_class_init (GstPlayBinClass * klass)
384 GObjectClass *gobject_klass;
385 GstElementClass *gstelement_klass;
386 GstBinClass *gstbin_klass;
387 GstPlayBaseBinClass *playbasebin_klass;
389 gobject_klass = (GObjectClass *) klass;
390 gstelement_klass = (GstElementClass *) klass;
391 gstbin_klass = (GstBinClass *) klass;
392 playbasebin_klass = (GstPlayBaseBinClass *) klass;
394 parent_class = g_type_class_peek_parent (klass);
396 gobject_klass->set_property = gst_play_bin_set_property;
397 gobject_klass->get_property = gst_play_bin_get_property;
399 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
400 g_param_spec_object ("video-sink", "Video Sink",
401 "the video output element to use (NULL = default sink)",
402 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
403 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
404 g_param_spec_object ("audio-sink", "Audio Sink",
405 "the audio output element to use (NULL = default sink)",
406 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
407 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
408 g_param_spec_object ("vis-plugin", "Vis plugin",
409 "the visualization element to use (NULL = none)",
410 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
411 g_object_class_install_property (gobject_klass, ARG_VOLUME,
412 g_param_spec_double ("volume", "volume", "volume",
413 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
414 g_object_class_install_property (gobject_klass, ARG_FRAME,
415 gst_param_spec_mini_object ("frame", "Frame",
416 "The last frame (NULL = no video available)",
417 GST_TYPE_BUFFER, G_PARAM_READABLE));
418 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
419 g_param_spec_string ("subtitle-font-desc",
420 "Subtitle font description",
421 "Pango font description of font "
422 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
424 * GstPlayBin::connection-speed
426 * Network connection speed in kbps (0 = unknown)
430 g_object_class_install_property (gobject_klass, ARG_CONNECTION_SPEED,
431 g_param_spec_uint ("connection-speed", "Connection Speed",
432 "Network connection speed in kbps (0 = unknown)",
433 0, G_MAXUINT, CONNECTION_SPEED_DEFAULT, G_PARAM_READWRITE));
435 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
437 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
439 gstelement_klass->change_state =
440 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
441 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
443 gstbin_klass->handle_message =
444 GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
446 playbasebin_klass->setup_output_pads = setup_sinks;
450 gst_play_bin_init (GstPlayBin * play_bin)
452 play_bin->video_sink = NULL;
453 play_bin->audio_sink = NULL;
454 play_bin->visualisation = NULL;
455 play_bin->pending_visualisation = NULL;
456 play_bin->volume_element = NULL;
457 play_bin->textoverlay_element = NULL;
458 play_bin->volume = 1.0;
459 play_bin->sinks = NULL;
460 play_bin->frame = NULL;
461 play_bin->font_desc = NULL;
462 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
463 NULL, (GDestroyNotify) gst_object_unref);
467 gst_play_bin_dispose (GObject * object)
469 GstPlayBin *play_bin;
471 play_bin = GST_PLAY_BIN (object);
473 if (play_bin->cache != NULL) {
474 remove_sinks (play_bin);
475 g_hash_table_destroy (play_bin->cache);
476 play_bin->cache = NULL;
479 if (play_bin->audio_sink != NULL) {
480 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
481 gst_object_unref (play_bin->audio_sink);
482 play_bin->audio_sink = NULL;
484 if (play_bin->video_sink != NULL) {
485 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
486 gst_object_unref (play_bin->video_sink);
487 play_bin->video_sink = NULL;
489 if (play_bin->visualisation != NULL) {
490 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
491 gst_object_unref (play_bin->visualisation);
492 play_bin->visualisation = NULL;
494 if (play_bin->pending_visualisation != NULL) {
495 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
496 gst_object_unref (play_bin->pending_visualisation);
497 play_bin->pending_visualisation = NULL;
499 if (play_bin->textoverlay_element != NULL) {
500 gst_object_unref (play_bin->textoverlay_element);
501 play_bin->textoverlay_element = NULL;
503 g_free (play_bin->font_desc);
504 play_bin->font_desc = NULL;
506 G_OBJECT_CLASS (parent_class)->dispose (object);
510 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
513 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
515 if (play_bin->pending_visualisation)
516 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
521 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
524 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
525 GstBin *vis_bin = NULL;
526 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
528 GstElement *pending_visualisation;
530 GST_OBJECT_LOCK (play_bin);
531 pending_visualisation = play_bin->pending_visualisation;
532 play_bin->pending_visualisation = NULL;
533 GST_OBJECT_UNLOCK (play_bin);
535 /* We want to disable visualisation */
536 if (!GST_IS_ELEMENT (pending_visualisation)) {
537 /* Set visualisation element to READY */
538 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
543 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
546 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
550 vis_src_pad = gst_element_get_pad (play_bin->visualisation, "src");
551 vis_sink_pad = gst_pad_get_peer (tee_pad);
553 /* Can be fakesink */
554 if (GST_IS_PAD (vis_src_pad)) {
555 vqueue_pad = gst_pad_get_peer (vis_src_pad);
558 if (!GST_IS_PAD (vis_sink_pad)) {
562 /* Check the bin's state */
563 GST_OBJECT_LOCK (vis_bin);
564 bin_state = GST_STATE (vis_bin);
565 GST_OBJECT_UNLOCK (vis_bin);
568 gst_pad_unlink (tee_pad, vis_sink_pad);
569 gst_object_unref (vis_sink_pad);
572 if (GST_IS_PAD (vqueue_pad)) {
573 gst_pad_unlink (vis_src_pad, vqueue_pad);
574 gst_object_unref (vis_src_pad);
578 /* Remove from vis_bin */
579 gst_bin_remove (vis_bin, play_bin->visualisation);
580 /* Set state to NULL */
581 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
582 /* And loose our ref */
583 gst_object_unref (play_bin->visualisation);
585 if (pending_visualisation) {
586 /* Ref this new visualisation element before adding to the bin */
587 gst_object_ref (pending_visualisation);
588 /* Add the new one */
589 gst_bin_add (vis_bin, pending_visualisation);
590 /* Synchronizing state */
591 gst_element_set_state (pending_visualisation, bin_state);
593 vis_sink_pad = gst_element_get_pad (pending_visualisation, "sink");
594 vis_src_pad = gst_element_get_pad (pending_visualisation, "src");
596 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
601 gst_pad_link (tee_pad, vis_sink_pad);
602 gst_pad_link (vis_src_pad, vqueue_pad);
606 gst_object_unref (play_bin->visualisation);
607 play_bin->visualisation = pending_visualisation;
611 gst_object_unref (vis_sink_pad);
614 gst_object_unref (vis_src_pad);
617 gst_object_unref (vqueue_pad);
620 gst_object_unref (vis_bin);
623 /* Unblock the pad */
624 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
629 gst_play_bin_set_property (GObject * object, guint prop_id,
630 const GValue * value, GParamSpec * pspec)
632 GstPlayBin *play_bin;
634 play_bin = GST_PLAY_BIN (object);
638 if (play_bin->video_sink != NULL) {
639 gst_object_unref (play_bin->video_sink);
641 play_bin->video_sink = g_value_get_object (value);
642 if (play_bin->video_sink != NULL) {
643 gst_object_ref (play_bin->video_sink);
644 gst_object_sink (GST_OBJECT_CAST (play_bin->video_sink));
646 /* when changing the videosink, we just remove the
647 * video pipeline from the cache so that it will be
648 * regenerated with the new sink element */
649 g_hash_table_remove (play_bin->cache, "vbin");
652 if (play_bin->audio_sink != NULL) {
653 gst_object_unref (play_bin->audio_sink);
655 play_bin->audio_sink = g_value_get_object (value);
656 if (play_bin->audio_sink != NULL) {
657 gst_object_ref (play_bin->audio_sink);
658 gst_object_sink (GST_OBJECT_CAST (play_bin->audio_sink));
660 g_hash_table_remove (play_bin->cache, "abin");
664 GstElement *pending_visualisation =
665 GST_ELEMENT_CAST (g_value_get_object (value));
668 if (pending_visualisation) {
669 gst_object_ref (pending_visualisation);
670 gst_object_sink (pending_visualisation);
673 /* Do we already have a visualisation change pending ? */
674 GST_OBJECT_LOCK (play_bin);
675 if (play_bin->pending_visualisation) {
676 gst_object_unref (play_bin->pending_visualisation);
677 play_bin->pending_visualisation = pending_visualisation;
678 GST_OBJECT_UNLOCK (play_bin);
680 GST_OBJECT_UNLOCK (play_bin);
681 /* Was there a visualisation already set ? */
682 if (play_bin->visualisation != NULL) {
683 GstBin *vis_bin = NULL;
686 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
689 /* Check if the visualisation is already in a bin */
690 if (GST_IS_BIN (vis_bin)) {
691 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
693 /* Now get tee pad and block it async */
694 vis_sink_pad = gst_element_get_pad (play_bin->visualisation,
696 if (!GST_IS_PAD (vis_sink_pad)) {
699 tee_pad = gst_pad_get_peer (vis_sink_pad);
700 if (!GST_IS_PAD (tee_pad)) {
704 play_bin->pending_visualisation = pending_visualisation;
705 /* Block with callback */
706 gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
710 gst_object_unref (vis_sink_pad);
713 gst_object_unref (tee_pad);
715 gst_object_unref (vis_bin);
717 play_bin->visualisation = pending_visualisation;
720 play_bin->visualisation = pending_visualisation;
726 play_bin->volume = g_value_get_double (value);
727 if (play_bin->volume_element) {
728 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
729 play_bin->volume, NULL);
733 g_free (play_bin->font_desc);
734 play_bin->font_desc = g_strdup (g_value_get_string (value));
735 if (play_bin->textoverlay_element) {
736 g_object_set (G_OBJECT (play_bin->textoverlay_element),
737 "font-desc", g_value_get_string (value), NULL);
740 case ARG_CONNECTION_SPEED:
741 play_bin->connection_speed = g_value_get_uint (value) * 1000;
744 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
750 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
753 GstPlayBin *play_bin;
755 play_bin = GST_PLAY_BIN (object);
759 g_value_set_object (value, play_bin->video_sink);
762 g_value_set_object (value, play_bin->audio_sink);
765 g_value_set_object (value, play_bin->visualisation);
768 g_value_set_double (value, play_bin->volume);
771 GstBuffer *cur_frame = NULL;
773 gst_buffer_replace (&cur_frame, play_bin->frame);
774 gst_value_take_buffer (value, cur_frame);
777 case ARG_CONNECTION_SPEED:
778 g_value_set_uint (value, play_bin->connection_speed / 1000);
781 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
786 /* signal fired when the identity has received a new buffer. This is used for
787 * making screenshots.
790 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
792 GstPlayBin *play_bin = GST_PLAY_BIN (data);
794 /* applications need to know the buffer caps,
795 * make sure they are always set on the frame */
796 if (GST_BUFFER_CAPS (frame) == NULL) {
799 if ((pad = gst_element_get_pad (identity, "sink"))) {
800 gst_buffer_set_caps (frame, GST_PAD_CAPS (pad));
801 gst_object_unref (pad);
805 gst_buffer_replace (&play_bin->frame, frame);
809 post_missing_element_message (GstPlayBin * playbin, const gchar * name)
813 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playbin), name);
814 gst_element_post_message (GST_ELEMENT_CAST (playbin), msg);
817 /* make the element (bin) that contains the elements needed to perform
818 * video display. We connect a handoff signal to identity so that we
819 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
821 * +-------------------------------------------------------------+
823 * | +--------+ +----------+ +----------+ +---------+ |
824 * | |identity| |colorspace| |videoscale| |videosink| |
825 * | +-sink src-sink src-sink src-sink | |
826 * | | +---+----+ +----------+ +----------+ +---------+ |
828 * +----------|--------------------------------------------------+
832 gen_video_element (GstPlayBin * play_bin)
839 GstElement *identity;
842 /* first see if we have it in the cache */
843 element = g_hash_table_lookup (play_bin->cache, "vbin");
844 if (element != NULL) {
848 if (play_bin->video_sink) {
849 sink = play_bin->video_sink;
851 sink = gst_element_factory_make ("autovideosink", "videosink");
853 sink = gst_element_factory_make ("xvimagesink", "videosink");
858 gst_object_ref (sink);
859 g_hash_table_insert (play_bin->cache, "video_sink", sink);
861 /* create a bin to hold objects, as we create them we add them to this bin so
862 * that when something goes wrong we only need to unref the bin */
863 element = gst_bin_new ("vbin");
864 gst_bin_add (GST_BIN_CAST (element), sink);
866 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
869 gst_bin_add (GST_BIN_CAST (element), conv);
871 scale = gst_element_factory_make ("videoscale", "vscale");
874 gst_bin_add (GST_BIN_CAST (element), scale);
876 identity = gst_element_factory_make ("identity", "id");
877 g_object_set (identity, "silent", TRUE, NULL);
878 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
879 gst_bin_add (GST_BIN_CAST (element), identity);
881 gst_element_link_pads (identity, "src", conv, "sink");
882 gst_element_link_pads (conv, "src", scale, "sink");
883 /* be more careful with the pad from the custom sink element, it might not
885 if (!gst_element_link_pads (scale, "src", sink, NULL))
888 pad = gst_element_get_pad (identity, "sink");
889 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
890 gst_object_unref (pad);
892 gst_element_set_state (element, GST_STATE_READY);
894 /* since we're gonna add it to a bin but don't want to lose it,
895 * we keep a reference. */
896 gst_object_ref (element);
897 g_hash_table_insert (play_bin->cache, "vbin", element);
904 post_missing_element_message (play_bin, "autovideosink");
905 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
906 (_("Both autovideosink and xvimagesink elements are missing.")),
912 post_missing_element_message (play_bin, "ffmpegcolorspace");
913 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
914 (_("Missing element '%s' - check your GStreamer installation."),
915 "ffmpegcolorspace"), (NULL));
916 gst_object_unref (element);
922 post_missing_element_message (play_bin, "videoscale");
923 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
924 (_("Missing element '%s' - check your GStreamer installation."),
925 "videoscale"), ("possibly a liboil version mismatch?"));
926 gst_object_unref (element);
931 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
932 (NULL), ("Failed to configure the video sink."));
933 gst_object_unref (element);
938 /* make an element for playback of video with subtitles embedded.
940 * +--------------------------------------------------+
941 * | tbin +-------------+ |
942 * | +-----+ | textoverlay | +------+ |
943 * | | csp | +--video_sink | | vbin | |
944 * video_sink-sink src+ +-text_sink src-sink | |
945 * | +-----+ | +-------------+ +------+ |
946 * text_sink-------------+ |
947 * +--------------------------------------------------+
949 * If there is no subtitle renderer this function will simply return the
950 * videosink without the text_sink pad.
953 gen_text_element (GstPlayBin * play_bin)
955 GstElement *element, *csp, *overlay, *vbin;
958 /* Create the video rendering bin, error is posted when this fails. */
959 vbin = gen_video_element (play_bin);
964 overlay = gst_element_factory_make ("textoverlay", "overlay");
966 /* If no overlay return the video bin without subtitle support. */
971 element = gst_bin_new ("textbin");
973 /* Set some parameters */
974 g_object_set (G_OBJECT (overlay),
975 "halign", "center", "valign", "bottom", NULL);
976 if (play_bin->font_desc) {
977 g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
981 play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
983 /* we know this will succeed, as the video bin already created one before */
984 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
986 /* Add our elements */
987 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
990 gst_element_link_pads (csp, "src", overlay, "video_sink");
991 gst_element_link_pads (overlay, "src", vbin, "sink");
993 /* Add ghost pads on the subtitle bin */
994 pad = gst_element_get_pad (overlay, "text_sink");
995 gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
996 gst_object_unref (pad);
998 pad = gst_element_get_pad (csp, "sink");
999 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1000 gst_object_unref (pad);
1002 /* Set state to READY */
1003 gst_element_set_state (element, GST_STATE_READY);
1010 post_missing_element_message (play_bin, "textoverlay");
1011 GST_WARNING_OBJECT (play_bin,
1012 "No overlay (pango) element, subtitles disabled");
1017 /* make the element (bin) that contains the elements needed to perform
1020 * +-------------------------------------------------------------+
1022 * | +---------+ +----------+ +---------+ +---------+ |
1023 * | |audioconv| |audioscale| | volume | |audiosink| |
1024 * | +-sink src-sink src-sink src-sink | |
1025 * | | +---------+ +----------+ +---------+ +---------+ |
1027 * +-------------------------------------------------------------+
1030 gen_audio_element (GstPlayBin * play_bin)
1033 GstElement *element;
1040 element = g_hash_table_lookup (play_bin->cache, "abin");
1041 if (element != NULL)
1044 if (play_bin->audio_sink) {
1045 sink = play_bin->audio_sink;
1047 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
1049 sink = gst_element_factory_make ("alsasink", "audiosink");
1054 play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
1057 gst_object_ref (sink);
1058 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
1060 element = gst_bin_new ("abin");
1061 gst_bin_add (GST_BIN_CAST (element), sink);
1063 conv = gst_element_factory_make ("audioconvert", "aconv");
1065 goto no_audioconvert;
1066 gst_bin_add (GST_BIN_CAST (element), conv);
1068 scale = gst_element_factory_make ("audioresample", "aresample");
1070 goto no_audioresample;
1071 gst_bin_add (GST_BIN_CAST (element), scale);
1073 volume = gst_element_factory_make ("volume", "volume");
1074 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
1075 play_bin->volume_element = volume;
1076 gst_bin_add (GST_BIN_CAST (element), volume);
1078 res = gst_element_link_pads (conv, "src", scale, "sink");
1079 res &= gst_element_link_pads (scale, "src", volume, "sink");
1080 res &= gst_element_link_pads (volume, "src", sink, NULL);
1084 pad = gst_element_get_pad (conv, "sink");
1085 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1086 gst_object_unref (pad);
1088 gst_element_set_state (element, GST_STATE_READY);
1090 /* since we're gonna add it to a bin but don't want to lose it,
1091 * we keep a reference. */
1092 gst_object_ref (element);
1093 g_hash_table_insert (play_bin->cache, "abin", element);
1100 post_missing_element_message (play_bin, "autoaudiosink");
1101 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1102 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
1107 post_missing_element_message (play_bin, "audioconvert");
1108 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1109 (_("Missing element '%s' - check your GStreamer installation."),
1110 "audioconvert"), ("possibly a liboil version mismatch?"));
1111 gst_object_unref (element);
1117 post_missing_element_message (play_bin, "audioresample");
1118 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1119 (_("Missing element '%s' - check your GStreamer installation."),
1120 "audioresample"), ("possibly a liboil version mismatch?"));
1121 gst_object_unref (element);
1126 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1127 (NULL), ("Failed to configure the audio sink."));
1128 gst_object_unref (element);
1133 /* make the element (bin) that contains the elements needed to perform
1134 * visualisation ouput. The idea is to split the audio using tee, then
1135 * sending the output to the regular audio bin and the other output to
1136 * the vis plugin that transforms it into a video that is rendered with the
1137 * normal video bin. The video and audio bins are run in threads to make sure
1138 * they don't block eachother.
1140 * +-----------------------------------------------------------------------+
1142 * | +------+ +--------+ +----------------+ |
1143 * | | tee | | aqueue | | abin ... | |
1144 * | +-sink src-sink src-sink | |
1145 * | | | | +--------+ +----------------+ |
1147 * | | | | +------+ +------------+ +------+ +-----------+ |
1148 * | | | | |vqueue| | audioconv | | vis | | vbin ... | |
1149 * | | | src-sink src-sink + samp src-sink src-sink | |
1150 * | | | | +------+ +------------+ +------+ +-----------+ |
1154 * +-----------------------------------------------------------------------+
1157 gen_vis_element (GstPlayBin * play_bin)
1160 GstElement *element;
1168 GstElement *vqueue, *aqueue;
1171 /* errors are already posted when these fail. */
1172 asink = gen_audio_element (play_bin);
1175 vsink = gen_video_element (play_bin);
1177 gst_object_unref (asink);
1181 element = gst_bin_new ("visbin");
1182 tee = gst_element_factory_make ("tee", "tee");
1184 vqueue = gst_element_factory_make ("queue", "vqueue");
1185 aqueue = gst_element_factory_make ("queue", "aqueue");
1187 gst_bin_add (GST_BIN_CAST (element), asink);
1188 gst_bin_add (GST_BIN_CAST (element), vqueue);
1189 gst_bin_add (GST_BIN_CAST (element), aqueue);
1190 gst_bin_add (GST_BIN_CAST (element), vsink);
1191 gst_bin_add (GST_BIN_CAST (element), tee);
1193 conv = gst_element_factory_make ("audioconvert", "aconv");
1195 goto no_audioconvert;
1196 gst_bin_add (GST_BIN_CAST (element), conv);
1198 resamp = gst_element_factory_make ("audioresample", "aresamp");
1200 goto no_audioresample;
1201 gst_bin_add (GST_BIN_CAST (element), resamp);
1203 conv2 = gst_element_factory_make ("audioconvert", "aconv2");
1205 goto no_audioconvert;
1206 gst_bin_add (GST_BIN_CAST (element), conv2);
1208 if (play_bin->visualisation) {
1209 gst_object_ref (play_bin->visualisation);
1210 vis = play_bin->visualisation;
1212 vis = gst_element_factory_make ("goom", "vis");
1216 gst_bin_add (GST_BIN_CAST (element), vis);
1218 res = gst_element_link_pads (vqueue, "src", conv, "sink");
1219 res &= gst_element_link_pads (conv, "src", resamp, "sink");
1220 res &= gst_element_link_pads (resamp, "src", conv2, "sink");
1221 res &= gst_element_link_pads (conv2, "src", vis, "sink");
1222 res &= gst_element_link_pads (vis, "src", vsink, "sink");
1226 pad = gst_element_get_pad (aqueue, "sink");
1227 rpad = gst_element_get_request_pad (tee, "src%d");
1228 gst_pad_link (rpad, pad);
1229 gst_object_unref (rpad);
1230 gst_object_unref (pad);
1231 gst_element_link_pads (aqueue, "src", asink, "sink");
1233 pad = gst_element_get_pad (vqueue, "sink");
1234 rpad = gst_element_get_request_pad (tee, "src%d");
1235 gst_pad_link (rpad, pad);
1236 gst_object_unref (rpad);
1237 gst_object_unref (pad);
1239 pad = gst_element_get_pad (tee, "sink");
1240 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1241 gst_object_unref (pad);
1248 post_missing_element_message (play_bin, "audioconvert");
1249 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1250 (_("Missing element '%s' - check your GStreamer installation."),
1251 "audioconvert"), ("possibly a liboil version mismatch?"));
1252 gst_object_unref (element);
1257 post_missing_element_message (play_bin, "audioresample");
1258 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1259 (_("Missing element '%s' - check your GStreamer installation."),
1260 "audioresample"), (NULL));
1261 gst_object_unref (element);
1266 post_missing_element_message (play_bin, "goom");
1267 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1268 (_("Missing element '%s' - check your GStreamer installation."),
1270 gst_object_unref (element);
1275 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1276 (NULL), ("Failed to configure the visualisation element."));
1277 gst_object_unref (element);
1282 /* get rid of all installed sinks */
1284 remove_sinks (GstPlayBin * play_bin)
1288 GstElement *element;
1291 if (play_bin->cache == NULL)
1294 GST_DEBUG ("removesinks");
1295 element = g_hash_table_lookup (play_bin->cache, "abin");
1296 if (element != NULL) {
1297 parent = gst_element_get_parent (element);
1298 if (parent != NULL) {
1299 /* we remove the element from the parent so that
1300 * there is no unwanted state change when the parent
1302 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1303 gst_element_set_state (element, GST_STATE_NULL);
1304 gst_bin_remove (GST_BIN_CAST (parent), element);
1305 gst_object_unref (parent);
1307 pad = gst_element_get_pad (element, "sink");
1309 peer = gst_pad_get_peer (pad);
1311 gst_pad_unlink (peer, pad);
1312 gst_object_unref (peer);
1314 gst_object_unref (pad);
1317 element = g_hash_table_lookup (play_bin->cache, "vbin");
1318 if (element != NULL) {
1319 parent = gst_element_get_parent (element);
1320 if (parent != NULL) {
1321 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1322 gst_element_set_state (element, GST_STATE_NULL);
1323 gst_bin_remove (GST_BIN_CAST (parent), element);
1324 gst_object_unref (parent);
1326 pad = gst_element_get_pad (element, "sink");
1328 peer = gst_pad_get_peer (pad);
1330 gst_pad_unlink (peer, pad);
1331 gst_object_unref (peer);
1333 gst_object_unref (pad);
1337 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
1338 GstElement *element = GST_ELEMENT_CAST (sinks->data);
1342 pad = gst_element_get_pad (element, "sink");
1344 GST_LOG ("removing sink %p", element);
1346 peer = gst_pad_get_peer (pad);
1348 gst_pad_unlink (peer, pad);
1349 gst_object_unref (peer);
1351 gst_object_unref (pad);
1353 gst_element_set_state (element, GST_STATE_NULL);
1354 gst_bin_remove (GST_BIN_CAST (play_bin), element);
1356 g_list_free (play_bin->sinks);
1357 play_bin->sinks = NULL;
1359 if (play_bin->visualisation) {
1360 GstElement *vis_bin;
1363 GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
1365 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
1368 gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
1369 gst_object_unref (vis_bin);
1373 if (play_bin->frame) {
1374 gst_buffer_unref (play_bin->frame);
1375 play_bin->frame = NULL;
1378 if (play_bin->textoverlay_element) {
1379 gst_object_unref (play_bin->textoverlay_element);
1380 play_bin->textoverlay_element = NULL;
1384 /* loop over the streams and set up the pipeline to play this
1385 * media file. First we count the number of audio and video streams.
1386 * If there is no video stream but there exists an audio stream,
1387 * we install a visualisation pipeline.
1389 * Also make sure to only connect the first audio and video pad. FIXME
1390 * this should eventually be handled with a tuner interface so that
1391 * one can switch the streams.
1393 * This function takes ownership of @sink.*
1396 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
1397 GstPad * subtitle_pad)
1400 GstPadLinkReturn linkres;
1402 GstStateChangeReturn stateret;
1405 g_return_val_if_fail (sink != NULL, FALSE);
1407 state = GST_STATE_PAUSED;
1409 /* this is only for debugging */
1410 parent = gst_pad_get_parent_element (srcpad);
1412 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
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_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_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 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1495 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1496 GList *streaminfo = NULL, *s;
1497 gboolean need_vis = FALSE;
1498 gboolean need_text = FALSE;
1499 GstPad *textsrcpad = NULL, *pad = NULL;
1501 gboolean res = TRUE;
1503 /* get rid of existing sinks */
1504 if (play_bin->sinks) {
1505 remove_sinks (play_bin);
1507 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1509 /* find out what to do */
1510 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
1511 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1513 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
1514 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1515 play_bin->visualisation != NULL) {
1519 /* now actually connect everything */
1520 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
1521 for (s = streaminfo; s; s = g_list_next (s)) {
1522 GObject *obj = G_OBJECT (s->data);
1526 g_object_get (obj, "type", &type, NULL);
1527 g_object_get (obj, "object", &object, NULL);
1531 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1533 sink = gen_vis_element (play_bin);
1535 sink = gen_audio_element (play_bin);
1540 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
1542 res = add_sink (play_bin, sink, pad, NULL);
1543 gst_object_unref (pad);
1547 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
1549 GstObject *parent = NULL, *grandparent = NULL;
1550 GstPad *ghost = NULL;
1552 sink = gen_text_element (play_bin);
1554 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
1556 /* This pad is from subtitle-bin, we need to create a ghost pad to have
1557 common grandparents */
1558 parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
1560 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
1561 gst_object_unref (textsrcpad);
1566 grandparent = gst_object_get_parent (parent);
1568 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
1569 gst_object_unref (parent);
1570 gst_object_unref (textsrcpad);
1575 /* We ghost the pad on subtitle_bin only, if the text pad is from the
1576 media demuxer we keep it as it is */
1577 if (!GST_IS_PLAY_BIN (grandparent)) {
1578 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
1579 "file, ghosting to a suitable hierarchy");
1580 ghost = gst_ghost_pad_new ("text_src", textsrcpad);
1581 if (!GST_IS_PAD (ghost)) {
1582 GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
1584 gst_object_unref (parent);
1585 gst_object_unref (grandparent);
1586 gst_object_unref (textsrcpad);
1591 gst_pad_set_active (ghost, TRUE);
1592 if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
1593 gst_object_unref (textsrcpad);
1594 textsrcpad = gst_object_ref (ghost);
1596 GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
1597 gst_pad_set_active (ghost, FALSE);
1598 gst_object_unref (ghost);
1599 gst_object_unref (textsrcpad);
1603 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
1604 "no changes to hierarchy needed");
1607 gst_object_unref (parent);
1608 gst_object_unref (grandparent);
1610 sink = gen_video_element (play_bin);
1615 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
1617 res = add_sink (play_bin, sink, pad, textsrcpad);
1618 gst_object_unref (pad);
1620 gst_object_unref (textsrcpad);
1623 /* remove the sinks now, pipeline get_state will now wait for the
1624 * sinks to preroll */
1625 if (play_bin->fakesink) {
1626 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1627 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1628 play_bin->fakesink = NULL;
1634 /* Send an event to our sinks until one of them works; don't then send to the
1635 * remaining sinks (unlike GstBin)
1638 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1640 GList *sinks = play_bin->sinks;
1641 gboolean res = TRUE;
1644 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1646 gst_event_ref (event);
1647 if ((res = gst_element_send_event (sink, event))) {
1648 GST_DEBUG_OBJECT (play_bin,
1649 "Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
1652 GST_DEBUG_OBJECT (play_bin,
1653 "Event failed when sent to sink %" GST_PTR_FORMAT, sink);
1655 sinks = g_list_next (sinks);
1658 gst_event_unref (event);
1663 /* We only want to send the event to a single sink (overriding GstBin's
1664 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1665 * events appropriately. So, this is a messy duplication of code. */
1667 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1669 gboolean res = FALSE;
1670 GstEventType event_type = GST_EVENT_TYPE (event);
1672 switch (event_type) {
1673 case GST_EVENT_SEEK:
1674 GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
1675 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1678 res = parent_class->send_event (element, event);
1686 value_list_append_structure_list (GValue * list_val, GstStructure ** first,
1687 GList * structure_list)
1691 for (l = structure_list; l != NULL; l = l->next) {
1692 GValue val = { 0, };
1695 *first = gst_structure_copy ((GstStructure *) l->data);
1697 g_value_init (&val, GST_TYPE_STRUCTURE);
1698 g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
1699 gst_value_list_append_value (list_val, &val);
1700 g_value_unset (&val);
1704 /* if it's a redirect message with multiple redirect locations we might
1705 * want to pick a different 'best' location depending on the required
1706 * bitrates and the connection speed */
1708 gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
1710 const GValue *locations_list, *location_val;
1711 GstMessage *new_msg;
1712 GstStructure *new_structure = NULL;
1713 GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
1714 GValue new_list = { 0, };
1717 GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
1718 GST_DEBUG_OBJECT (playbin, "connection speed: %u", playbin->connection_speed);
1720 if (playbin->connection_speed == 0 || msg->structure == NULL)
1723 locations_list = gst_structure_get_value (msg->structure, "locations");
1724 if (locations_list == NULL)
1727 size = gst_value_list_get_size (locations_list);
1731 /* maintain existing order as much as possible, just sort references
1732 * with too high a bitrate to the end (the assumption being that if
1733 * bitrates are given they are given for all interesting streams and
1734 * that the you-need-at-least-version-xyz redirect has the same bitrate
1735 * as the lowest referenced redirect alternative) */
1736 for (i = 0; i < size; ++i) {
1737 const GstStructure *s;
1740 location_val = gst_value_list_get_value (locations_list, i);
1741 s = (const GstStructure *) g_value_get_boxed (location_val);
1742 if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
1743 GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
1744 l_neutral = g_list_append (l_neutral, (gpointer) s);
1745 } else if (bitrate > playbin->connection_speed) {
1746 GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
1747 l_bad = g_list_append (l_bad, (gpointer) s);
1748 } else if (bitrate <= playbin->connection_speed) {
1749 GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
1750 l_good = g_list_append (l_good, (gpointer) s);
1754 g_value_init (&new_list, GST_TYPE_LIST);
1755 value_list_append_structure_list (&new_list, &new_structure, l_good);
1756 value_list_append_structure_list (&new_list, &new_structure, l_neutral);
1757 value_list_append_structure_list (&new_list, &new_structure, l_bad);
1758 gst_structure_set_value (new_structure, "locations", &new_list);
1759 g_value_unset (&new_list);
1761 g_list_free (l_good);
1762 g_list_free (l_neutral);
1763 g_list_free (l_bad);
1765 new_msg = gst_message_new_element (msg->src, new_structure);
1766 gst_message_unref (msg);
1768 GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
1773 gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
1775 if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
1776 && gst_structure_has_name (msg->structure, "redirect")) {
1777 msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
1780 GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
1783 static GstStateChangeReturn
1784 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1786 GstStateChangeReturn ret;
1787 GstPlayBin *play_bin;
1789 play_bin = GST_PLAY_BIN (element);
1792 switch (transition) {
1793 case GST_STATE_CHANGE_READY_TO_PAUSED:
1794 /* this really is the easiest way to make the state change return
1795 * ASYNC until we added the sinks */
1796 if (!play_bin->fakesink) {
1797 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1798 gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
1805 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1806 if (ret == GST_STATE_CHANGE_FAILURE)
1809 switch (transition) {
1810 case GST_STATE_CHANGE_READY_TO_PAUSED:
1811 /* remember us being a live pipeline */
1812 play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
1813 GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
1815 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1816 /* FIXME Release audio device when we implement that */
1818 case GST_STATE_CHANGE_PAUSED_TO_READY:
1819 /* remove sinks we added */
1820 remove_sinks (play_bin);
1821 /* and there might be a fakesink we need to clean up now */
1822 if (play_bin->fakesink) {
1823 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1824 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1825 play_bin->fakesink = NULL;
1836 plugin_init (GstPlugin * plugin)
1838 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1840 gst_pb_utils_init ();
1843 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
1845 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
1846 #endif /* ENABLE_NLS */
1848 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
1852 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1855 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,