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
23 * Playbin provides a stand-alone everything-in-one abstraction for an
24 * audio and/or video player.
26 * It can handle both audio and video files and features
29 * automatic file type recognition and based on that automatic
30 * selection and usage of the right audio/video/subtitle demuxers/decoders
33 * visualisations for audio files
36 * subtitle support for video files
39 * stream selection between different audio/subtitles streams
42 * meta info (tag) extraction
45 * easy access to the last video frame
48 * buffering when playing streams over a network
56 * <title>Usage</title>
58 * A playbin element can be created just like any other element using
59 * gst_element_factory_make(). The file/URI to play should be set via the #GstPlayBin:uri
60 * property. This must be an absolute URI, relative file paths are not allowed.
61 * Example URIs are file:///home/joe/movie.avi or http://www.joedoe.com/foo.ogg
63 * Playbin is a #GstPipeline. It will notify the application of everything
64 * that's happening (errors, end of stream, tags found, state changes, etc.)
65 * by posting messages on its #GstBus. The application needs to watch the
68 * Playback can be initiated by setting the element to PLAYING state using
69 * gst_element_set_state(). Note that the state change will take place in
70 * the background in a separate thread, when the function returns playback
71 * is probably not happening yet and any errors might not have occured yet.
72 * Applications using playbin should ideally be written to deal with things
73 * completely asynchroneous.
75 * When playback has finished (an EOS message has been received on the bus)
76 * or an error has occured (an ERROR message has been received on the bus) or
77 * the user wants to play a different track, playbin should be set back to
78 * READY or NULL state, then the #GstPlayBin:uri property should be set to the
79 * new location and then playbin be set to PLAYING state again.
81 * Seeking can be done using gst_element_seek_simple() or gst_element_seek()
82 * on the playbin element. Again, the seek will not be executed
83 * instantaneously, but will be done in a background thread. When the seek
84 * call returns the seek will most likely still be in process. An application
85 * may wait for the seek to finish (or fail) using gst_element_get_state() with
86 * -1 as the timeout, but this will block the user interface and is not
89 * Applications may query the current position and duration of the stream
90 * via gst_element_query_position() and gst_element_query_duration() and
91 * setting the format passed to GST_FORMAT_TIME. If the query was successful,
92 * the duration or position will have been returned in units of nanoseconds.
96 * <title>Advanced Usage: specifying the audio and video sink</title>
98 * By default, if no audio sink or video sink has been specified via the
99 * #GstPlayBin:audio-sink or #GstPlayBin:video-sink property, playbin will use
100 * the autoaudiosink and autovideosink elements to find the first-best
101 * available output method.
102 * This should work in most cases, but is not always desirable. Often either
103 * the user or application might want to specify more explicitly what to use
104 * for audio and video output.
106 * If the application wants more control over how audio or video should be
107 * output, it may create the audio/video sink elements itself (for example
108 * using gst_element_factory_make()) and provide them to playbin using the
109 * #GstPlayBin:audio-sink or #GstPlayBin:video-sink property.
111 * GNOME-based applications, for example, will usually want to create
112 * gconfaudiosink and gconfvideosink elements and make playbin use those,
113 * so that output happens to whatever the user has configured in the GNOME
114 * Multimedia System Selector confinguration dialog.
116 * The sink elements do not necessarily need to be ready-made sinks. It is
117 * possible to create container elements that look like a sink to playbin,
118 * but in reality contain a number of custom elements linked together. This
119 * can be achieved by creating a #GstBin and putting elements in there and
120 * linking them, and then creating a sink #GstGhostPad for the bin and pointing
121 * it to the sink pad of the first element within the bin. This can be used
122 * for a number of purposes, for example to force output to a particular
123 * format or to modify or observe the data before it is output.
125 * It is also possible to 'suppress' audio and/or video output by using
126 * 'fakesink' elements (or capture it from there using the fakesink element's
127 * "handoff" signal, which, nota bene, is fired from the streaming thread!).
131 * <title>Retrieving Tags and Other Meta Data</title>
133 * Most of the common meta data (artist, title, etc.) can be retrieved by
134 * watching for TAG messages on the pipeline's bus (see above).
136 * Other more specific meta information like width/height/framerate of video
137 * streams or samplerate/number of channels of audio streams can be obtained
138 * using the #GstPlayBaseBin:stream-info property, which will return a GList of
139 * stream info objects, one for each stream. These are opaque objects that can
140 * only be accessed via the standard GObject property interface, ie. g_object_get().
141 * Each stream info object has the following properties:
143 * <listitem>"object" (GstObject) (the decoder source pad usually)</listitem>
144 * <listitem>"type" (enum) (if this is an audio/video/subtitle stream)</listitem>
145 * <listitem>"decoder" (string) (name of decoder used to decode this stream)</listitem>
146 * <listitem>"mute" (boolean) (to mute or unmute this stream)</listitem>
147 * <listitem>"caps" (GstCaps) (caps of the decoded stream)</listitem>
148 * <listitem>"language-code" (string) (ISO-639 language code for this stream, mostly used for audio/subtitle streams)</listitem>
149 * <listitem>"codec" (string) (format this stream was encoded in)</listitem>
151 * Stream information from the #GstPlayBaseBin:stream-info property is best queried once
152 * playbin has changed into PAUSED or PLAYING state (which can be detected
153 * via a state-changed message on the #GstBus where old_state=READY and
154 * new_state=PAUSED), since before that the list might not be complete yet or
155 * not contain all available information (like language-codes).
159 * <title>Buffering</title>
160 * Playbin handles buffering automatically for the most part, but applications
161 * need to handle parts of the buffering process as well. Whenever playbin is
162 * buffering, it will post BUFFERING messages on the bus with a percentage
163 * value that shows the progress of the buffering process. Applications need
164 * to set playbin to PLAYING or PAUSED state in response to these messages.
165 * They may also want to convey the buffering progress to the user in some
166 * way. Here is how to extract the percentage information from the message
167 * (requires GStreamer >= 0.10.11):
169 * switch (GST_MESSAGE_TYPE (msg)) {
170 * case GST_MESSAGE_BUFFERING: {
172 * gst_message_parse_buffering (msg, &percent);
173 * g_print ("Buffering (%%u percent done)", percent);
179 * Note that applications should keep/set the pipeline in the PAUSED state when
180 * a BUFFERING message is received with a buffer percent value < 100 and set
181 * the pipeline back to PLAYING state when a BUFFERING message with a value
182 * of 100 percent is received (if PLAYING is the desired state, that is).
185 * <title>Embedding the video window in your application</title>
186 * By default, playbin (or rather the video sinks used) will create their own
187 * window. Applications will usually want to force output to a window of their
188 * own, however. This can be done using the #GstXOverlay interface, which most
189 * video sinks implement. See the documentation there for more details.
192 * <title>Specifying which CD/DVD device to use</title>
193 * The device to use for CDs/DVDs needs to be set on the source element
194 * playbin creates before it is opened. The only way to do this at the moment
195 * is to connect to playbin's "notify::source" signal, which will be emitted
196 * by playbin when it has created the source element for a particular URI.
197 * In the signal callback you can check if the source element has a "device"
198 * property and set it appropriately. In future ways might be added to specify
199 * the device as part of the URI, but at the time of writing this is not
203 * <title>Examples</title>
205 * gst-launch -v playbin uri=file:///path/to/somefile.avi
206 * ]| This will play back the given AVI video file, given that the video and
207 * audio decoders required to decode the content are installed. Since no
208 * special audio sink or video sink is supplied (not possible via gst-launch),
209 * playbin will try to find a suitable audio and video sink automatically
210 * using the autoaudiosink and autovideosink elements.
212 * gst-launch -v playbin uri=cdda://4
213 * ]| This will play back track 4 on an audio CD in your disc drive (assuming
214 * the drive is detected automatically by the plugin).
216 * gst-launch -v playbin uri=dvd://1
217 * ]| This will play back title 1 of a DVD in your disc drive (assuming
218 * the drive is detected automatically by the plugin).
229 #include <gst/gst-i18n-plugin.h>
230 #include <gst/pbutils/pbutils.h>
232 #include "gstplaybasebin.h"
233 #include "gstplayback.h"
235 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
236 #define GST_CAT_DEFAULT gst_play_bin_debug
238 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
239 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
240 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
241 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
242 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
244 #define VOLUME_MAX_DOUBLE 10.0
246 typedef struct _GstPlayBin GstPlayBin;
247 typedef struct _GstPlayBinClass GstPlayBinClass;
252 * High-level player element
256 GstPlayBaseBin parent;
258 /* the configurable elements */
259 GstElement *fakesink;
260 GstElement *audio_sink;
261 GstElement *video_sink;
262 GstElement *visualisation;
263 GstElement *pending_visualisation;
264 GstElement *volume_element;
265 GstElement *textoverlay_element;
266 GstElement *spu_element;
269 /* these are the currently active sinks */
272 /* the last captured frame for snapshots */
275 /* our cache for the sinks */
278 /* font description */
281 /* indication if the pipeline is live */
285 struct _GstPlayBinClass
287 GstPlayBaseBinClass parent_class;
308 static void gst_play_bin_class_init (GstPlayBinClass * klass);
309 static void gst_play_bin_init (GstPlayBin * play_bin);
310 static void gst_play_bin_dispose (GObject * object);
312 static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
313 GstPlayBaseGroup * group);
314 static void remove_sinks (GstPlayBin * play_bin);
315 static void playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin,
317 static void playbin_set_audio_mute (GstPlayBaseBin * play_base_bin,
320 static void gst_play_bin_set_property (GObject * object, guint prop_id,
321 const GValue * value, GParamSpec * spec);
322 static void gst_play_bin_get_property (GObject * object, guint prop_id,
323 GValue * value, GParamSpec * spec);
325 static gboolean gst_play_bin_send_event (GstElement * element,
327 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
328 GstStateChange transition);
330 static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
332 static GstElementClass *parent_class;
334 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
336 static const GstElementDetails gst_play_bin_details =
337 GST_ELEMENT_DETAILS ("Player Bin",
338 "Generic/Bin/Player",
339 "Autoplug and play media from an uri",
340 "Wim Taymans <wim.taymans@gmail.com>");
343 gst_play_bin_get_type (void)
345 static GType gst_play_bin_type = 0;
347 if (!gst_play_bin_type) {
348 static const GTypeInfo gst_play_bin_info = {
349 sizeof (GstPlayBinClass),
352 (GClassInitFunc) gst_play_bin_class_init,
357 (GInstanceInitFunc) gst_play_bin_init,
361 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
362 "GstPlayBin", &gst_play_bin_info, 0);
365 return gst_play_bin_type;
369 gst_play_bin_class_init (GstPlayBinClass * klass)
371 GObjectClass *gobject_klass;
372 GstElementClass *gstelement_klass;
373 GstBinClass *gstbin_klass;
374 GstPlayBaseBinClass *playbasebin_klass;
376 gobject_klass = (GObjectClass *) klass;
377 gstelement_klass = (GstElementClass *) klass;
378 gstbin_klass = (GstBinClass *) klass;
379 playbasebin_klass = (GstPlayBaseBinClass *) klass;
381 parent_class = g_type_class_peek_parent (klass);
383 gobject_klass->set_property = gst_play_bin_set_property;
384 gobject_klass->get_property = gst_play_bin_get_property;
386 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
387 g_param_spec_object ("video-sink", "Video Sink",
388 "the video output element to use (NULL = default sink)",
389 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
390 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
391 g_param_spec_object ("audio-sink", "Audio Sink",
392 "the audio output element to use (NULL = default sink)",
393 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
394 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
395 g_param_spec_object ("vis-plugin", "Vis plugin",
396 "the visualization element to use (NULL = none)",
397 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
401 * Get or set the current audio stream volume. 1.0 means 100%,
402 * 0.0 means mute. This uses a linear volume scale.
405 g_object_class_install_property (gobject_klass, ARG_VOLUME,
406 g_param_spec_double ("volume", "volume", "volume",
407 0.0, VOLUME_MAX_DOUBLE, 1.0,
408 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
409 g_object_class_install_property (gobject_klass, ARG_FRAME,
410 gst_param_spec_mini_object ("frame", "Frame",
411 "The last frame (NULL = no video available)", GST_TYPE_BUFFER,
412 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
413 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
414 g_param_spec_string ("subtitle-font-desc", "Subtitle font description",
415 "Pango font description of font " "to be used for subtitle rendering",
416 NULL, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
418 gobject_klass->dispose = gst_play_bin_dispose;
420 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
422 gstelement_klass->change_state =
423 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
424 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
426 gstbin_klass->handle_message =
427 GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
429 playbasebin_klass->setup_output_pads = setup_sinks;
430 playbasebin_klass->set_subtitles_visible = playbin_set_subtitles_visible;
431 playbasebin_klass->set_audio_mute = playbin_set_audio_mute;
435 gst_play_bin_init (GstPlayBin * play_bin)
437 play_bin->video_sink = NULL;
438 play_bin->audio_sink = NULL;
439 play_bin->visualisation = NULL;
440 play_bin->pending_visualisation = NULL;
441 play_bin->volume_element = NULL;
442 play_bin->textoverlay_element = NULL;
443 play_bin->spu_element = NULL;
444 play_bin->volume = 1.0;
445 play_bin->sinks = NULL;
446 play_bin->frame = NULL;
447 play_bin->font_desc = NULL;
448 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
449 NULL, (GDestroyNotify) gst_object_unref);
453 gst_play_bin_dispose (GObject * object)
455 GstPlayBin *play_bin;
457 play_bin = GST_PLAY_BIN (object);
459 if (play_bin->cache != NULL) {
460 remove_sinks (play_bin);
461 g_hash_table_destroy (play_bin->cache);
462 play_bin->cache = NULL;
465 if (play_bin->audio_sink != NULL) {
466 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
467 gst_object_unref (play_bin->audio_sink);
468 play_bin->audio_sink = NULL;
470 if (play_bin->video_sink != NULL) {
471 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
472 gst_object_unref (play_bin->video_sink);
473 play_bin->video_sink = NULL;
475 if (play_bin->visualisation != NULL) {
476 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
477 gst_object_unref (play_bin->visualisation);
478 play_bin->visualisation = NULL;
480 if (play_bin->pending_visualisation != NULL) {
481 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
482 gst_object_unref (play_bin->pending_visualisation);
483 play_bin->pending_visualisation = NULL;
485 if (play_bin->textoverlay_element != NULL) {
486 gst_object_unref (play_bin->textoverlay_element);
487 play_bin->textoverlay_element = NULL;
489 if (play_bin->spu_element != NULL) {
490 gst_object_unref (play_bin->spu_element);
491 play_bin->spu_element = NULL;
493 g_free (play_bin->font_desc);
494 play_bin->font_desc = NULL;
496 G_OBJECT_CLASS (parent_class)->dispose (object);
500 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
503 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
505 if (play_bin->pending_visualisation)
506 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
511 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
514 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
515 GstBin *vis_bin = NULL;
516 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
518 GstElement *pending_visualisation;
520 GST_OBJECT_LOCK (play_bin);
521 pending_visualisation = play_bin->pending_visualisation;
522 play_bin->pending_visualisation = NULL;
523 GST_OBJECT_UNLOCK (play_bin);
525 /* We want to disable visualisation */
526 if (!GST_IS_ELEMENT (pending_visualisation)) {
527 /* Set visualisation element to READY */
528 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
533 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST
534 (play_bin->visualisation)));
536 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
540 vis_src_pad = gst_element_get_static_pad (play_bin->visualisation, "src");
541 vis_sink_pad = gst_pad_get_peer (tee_pad);
543 /* Can be fakesink */
544 if (GST_IS_PAD (vis_src_pad)) {
545 vqueue_pad = gst_pad_get_peer (vis_src_pad);
548 if (!GST_IS_PAD (vis_sink_pad)) {
552 /* Check the bin's state */
553 GST_OBJECT_LOCK (vis_bin);
554 bin_state = GST_STATE (vis_bin);
555 GST_OBJECT_UNLOCK (vis_bin);
558 gst_pad_unlink (tee_pad, vis_sink_pad);
559 gst_object_unref (vis_sink_pad);
562 if (GST_IS_PAD (vqueue_pad)) {
563 gst_pad_unlink (vis_src_pad, vqueue_pad);
564 gst_object_unref (vis_src_pad);
568 /* Remove from vis_bin */
569 gst_bin_remove (vis_bin, play_bin->visualisation);
570 /* Set state to NULL */
571 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
572 /* And loose our ref */
573 gst_object_unref (play_bin->visualisation);
575 if (pending_visualisation) {
576 /* Ref this new visualisation element before adding to the bin */
577 gst_object_ref (pending_visualisation);
578 /* Add the new one */
579 gst_bin_add (vis_bin, pending_visualisation);
580 /* Synchronizing state */
581 gst_element_set_state (pending_visualisation, bin_state);
583 vis_sink_pad = gst_element_get_static_pad (pending_visualisation, "sink");
584 vis_src_pad = gst_element_get_static_pad (pending_visualisation, "src");
586 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
591 gst_pad_link (tee_pad, vis_sink_pad);
592 gst_pad_link (vis_src_pad, vqueue_pad);
596 gst_object_unref (play_bin->visualisation);
597 play_bin->visualisation = pending_visualisation;
601 gst_object_unref (vis_sink_pad);
604 gst_object_unref (vis_src_pad);
607 gst_object_unref (vqueue_pad);
610 gst_object_unref (vis_bin);
613 /* Unblock the pad */
614 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
619 gst_play_bin_set_property (GObject * object, guint prop_id,
620 const GValue * value, GParamSpec * pspec)
622 GstPlayBin *play_bin;
624 play_bin = GST_PLAY_BIN (object);
628 if (play_bin->video_sink != NULL) {
629 gst_object_unref (play_bin->video_sink);
631 play_bin->video_sink = g_value_get_object (value);
632 if (play_bin->video_sink != NULL) {
633 gst_object_ref (play_bin->video_sink);
634 gst_object_sink (GST_OBJECT_CAST (play_bin->video_sink));
636 /* when changing the videosink, we just remove the
637 * video pipeline from the cache so that it will be
638 * regenerated with the new sink element */
639 g_hash_table_remove (play_bin->cache, "vbin");
642 if (play_bin->audio_sink != NULL) {
643 gst_object_unref (play_bin->audio_sink);
645 play_bin->audio_sink = g_value_get_object (value);
646 if (play_bin->audio_sink != NULL) {
647 gst_object_ref (play_bin->audio_sink);
648 gst_object_sink (GST_OBJECT_CAST (play_bin->audio_sink));
650 g_hash_table_remove (play_bin->cache, "abin");
654 GstElement *pending_visualisation =
655 GST_ELEMENT_CAST (g_value_get_object (value));
658 if (pending_visualisation) {
659 gst_object_ref (pending_visualisation);
660 gst_object_sink (pending_visualisation);
663 /* Do we already have a visualisation change pending ? */
664 GST_OBJECT_LOCK (play_bin);
665 if (play_bin->pending_visualisation) {
666 gst_object_unref (play_bin->pending_visualisation);
667 play_bin->pending_visualisation = pending_visualisation;
668 GST_OBJECT_UNLOCK (play_bin);
670 GST_OBJECT_UNLOCK (play_bin);
671 /* Was there a visualisation already set ? */
672 if (play_bin->visualisation != NULL) {
673 GstBin *vis_bin = NULL;
676 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST
677 (play_bin->visualisation)));
679 /* Check if the visualisation is already in a bin */
680 if (GST_IS_BIN (vis_bin)) {
681 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
683 /* Now get tee pad and block it async */
684 vis_sink_pad = gst_element_get_static_pad (play_bin->visualisation,
686 if (!GST_IS_PAD (vis_sink_pad)) {
689 tee_pad = gst_pad_get_peer (vis_sink_pad);
690 if (!GST_IS_PAD (tee_pad)) {
694 play_bin->pending_visualisation = pending_visualisation;
695 /* Block with callback */
696 gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
700 gst_object_unref (vis_sink_pad);
703 gst_object_unref (tee_pad);
705 gst_object_unref (vis_bin);
707 play_bin->visualisation = pending_visualisation;
710 play_bin->visualisation = pending_visualisation;
716 play_bin->volume = g_value_get_double (value);
717 if (play_bin->volume_element) {
718 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
719 play_bin->volume, NULL);
723 g_free (play_bin->font_desc);
724 play_bin->font_desc = g_strdup (g_value_get_string (value));
725 if (play_bin->textoverlay_element) {
726 g_object_set (G_OBJECT (play_bin->textoverlay_element),
727 "font-desc", g_value_get_string (value), NULL);
731 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
737 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
740 GstPlayBin *play_bin;
742 play_bin = GST_PLAY_BIN (object);
746 g_value_set_object (value, play_bin->video_sink);
749 g_value_set_object (value, play_bin->audio_sink);
752 g_value_set_object (value, play_bin->visualisation);
755 g_value_set_double (value, play_bin->volume);
758 GstBuffer *cur_frame = NULL;
760 gst_buffer_replace (&cur_frame, play_bin->frame);
761 gst_value_take_buffer (value, cur_frame);
765 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
770 /* signal fired when the identity has received a new buffer. This is used for
771 * making screenshots.
774 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
776 GstPlayBin *play_bin = GST_PLAY_BIN (data);
778 /* applications need to know the buffer caps,
779 * make sure they are always set on the frame */
780 if (GST_BUFFER_CAPS (frame) == NULL) {
783 if ((pad = gst_element_get_static_pad (identity, "sink"))) {
784 gst_buffer_set_caps (frame, GST_PAD_CAPS (pad));
785 gst_object_unref (pad);
789 gst_buffer_replace (&play_bin->frame, frame);
793 post_missing_element_message (GstPlayBin * playbin, const gchar * name)
797 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playbin), name);
798 gst_element_post_message (GST_ELEMENT_CAST (playbin), msg);
801 /* make the element (bin) that contains the elements needed to perform
802 * video display. We connect a handoff signal to identity so that we
803 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
805 * +-------------------------------------------------------------+
807 * | +--------+ +----------+ +----------+ +---------+ |
808 * | |identity| |colorspace| |videoscale| |videosink| |
809 * | +-sink src-sink src-sink src-sink | |
810 * | | +---+----+ +----------+ +----------+ +---------+ |
812 * +----------|--------------------------------------------------+
816 gen_video_element (GstPlayBin * play_bin)
823 GstElement *identity;
826 /* first see if we have it in the cache */
827 element = g_hash_table_lookup (play_bin->cache, "vbin");
828 if (element != NULL) {
832 if (play_bin->video_sink) {
833 sink = play_bin->video_sink;
835 sink = gst_element_factory_make ("autovideosink", "videosink");
837 sink = gst_element_factory_make ("xvimagesink", "videosink");
842 gst_object_ref (sink);
843 g_hash_table_insert (play_bin->cache, "video_sink", sink);
845 /* create a bin to hold objects, as we create them we add them to this bin so
846 * that when something goes wrong we only need to unref the bin */
847 element = gst_bin_new ("vbin");
848 gst_bin_add (GST_BIN_CAST (element), sink);
850 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
853 gst_bin_add (GST_BIN_CAST (element), conv);
855 scale = gst_element_factory_make ("videoscale", "vscale");
858 gst_bin_add (GST_BIN_CAST (element), scale);
860 identity = gst_element_factory_make ("identity", "id");
861 g_object_set (identity, "silent", TRUE, NULL);
862 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
863 gst_bin_add (GST_BIN_CAST (element), identity);
865 gst_element_link_pads (identity, "src", conv, "sink");
866 gst_element_link_pads (conv, "src", scale, "sink");
867 /* be more careful with the pad from the custom sink element, it might not
869 if (!gst_element_link_pads (scale, "src", sink, NULL))
872 pad = gst_element_get_static_pad (identity, "sink");
873 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
874 gst_object_unref (pad);
876 gst_element_set_state (element, GST_STATE_READY);
878 /* since we're gonna add it to a bin but don't want to lose it,
879 * we keep a reference. */
880 gst_object_ref (element);
881 g_hash_table_insert (play_bin->cache, "vbin", element);
888 post_missing_element_message (play_bin, "autovideosink");
889 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
890 (_("Both autovideosink and xvimagesink elements are missing.")),
896 post_missing_element_message (play_bin, "ffmpegcolorspace");
897 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
898 (_("Missing element '%s' - check your GStreamer installation."),
899 "ffmpegcolorspace"), (NULL));
900 gst_object_unref (element);
906 post_missing_element_message (play_bin, "videoscale");
907 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
908 (_("Missing element '%s' - check your GStreamer installation."),
909 "videoscale"), ("possibly a liboil version mismatch?"));
910 gst_object_unref (element);
915 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
916 (NULL), ("Failed to configure the video sink."));
917 gst_object_unref (element);
922 /* make an element for playback of video with subtitles embedded.
924 * +--------------------------------------------------+
925 * | tbin +-------------+ |
926 * | +-----+ | textoverlay | +------+ |
927 * | | csp | +--video_sink | | vbin | |
928 * video_sink-sink src+ +-text_sink src---sink | |
929 * | +-----+ | +-------------+ +------+ |
930 * text_sink-------------+ |
931 * +--------------------------------------------------+
933 * If there is no subtitle renderer this function will simply return the
934 * videosink without the text_sink pad.
937 add_text_element (GstPlayBin * play_bin, GstElement * vbin)
939 GstElement *element, *csp, *overlay;
943 overlay = gst_element_factory_make ("textoverlay", "overlay");
945 /* If no overlay return the video bin without subtitle support. */
950 element = gst_bin_new ("textbin");
952 /* Set some parameters */
953 g_object_set (G_OBJECT (overlay),
954 "halign", "center", "valign", "bottom", NULL);
955 if (play_bin->font_desc) {
956 g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
960 play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
962 /* we know this will succeed, as the video bin already created one before */
963 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
965 /* Add our elements */
966 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
969 gst_element_link_pads (csp, "src", overlay, "video_sink");
970 gst_element_link_pads (overlay, "src", vbin, "sink");
972 /* Add ghost pads on the subtitle bin */
973 pad = gst_element_get_static_pad (overlay, "text_sink");
974 gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
975 gst_object_unref (pad);
977 pad = gst_element_get_static_pad (csp, "sink");
978 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
979 gst_object_unref (pad);
981 /* If the vbin provides a subpicture sink pad, ghost it too */
982 pad = gst_element_get_static_pad (vbin, "subpicture_sink");
984 gst_element_add_pad (element, gst_ghost_pad_new ("subpicture_sink", pad));
985 gst_object_unref (pad);
988 /* Set state to READY */
989 gst_element_set_state (element, GST_STATE_READY);
996 post_missing_element_message (play_bin, "textoverlay");
997 GST_WARNING_OBJECT (play_bin,
998 "No overlay (pango) element, subtitles disabled");
1003 /* make an element for rendering DVD subpictures onto output video
1005 * +---------------------------------------------+
1006 * | tbin +--------+ |
1007 * | +-----+ | | +------+ |
1008 * | | csp | src-videosink | | vbin | |
1009 * video_sink-sink src+ | src-sink | |
1010 * | +-----+ +subpicture | +------+ |
1011 * subpicture_pad--------+ +--------+ |
1012 * +---------- ----------------------------------+
1016 add_spu_element (GstPlayBin * play_bin, GstElement * vbin)
1018 GstElement *element, *csp, *overlay;
1021 /* DVD spu overlay */
1022 GST_DEBUG_OBJECT (play_bin, "Attempting to insert DVD SPU element");
1024 overlay = gst_element_factory_make ("dvdspu", "overlay");
1026 /* If no overlay return the video bin without subpicture support. */
1030 /* Create our bin */
1031 element = gst_bin_new ("spubin");
1034 play_bin->spu_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
1036 /* we know this will succeed, as the video bin already created one before */
1037 csp = gst_element_factory_make ("ffmpegcolorspace", "spucsp");
1039 /* Add our elements */
1040 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
1043 gst_element_link_pads (csp, "src", overlay, "video");
1044 gst_element_link_pads (overlay, "src", vbin, "sink");
1046 /* Add ghost pad on the subpicture bin so it looks like vbin */
1047 pad = gst_element_get_static_pad (csp, "sink");
1048 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1049 gst_object_unref (pad);
1051 pad = gst_element_get_static_pad (overlay, "subpicture");
1052 gst_element_add_pad (element, gst_ghost_pad_new ("subpicture_sink", pad));
1053 gst_object_unref (pad);
1055 /* Set state to READY */
1056 gst_element_set_state (element, GST_STATE_READY);
1063 post_missing_element_message (play_bin, "dvdspu");
1064 GST_WARNING_OBJECT (play_bin,
1065 "No DVD overlay (dvdspu) element. "
1066 "menu highlight/subtitles unavailable");
1071 /* make the element (bin) that contains the elements needed to perform
1074 * +-------------------------------------------------------------+
1076 * | +---------+ +----------+ +---------+ +---------+ |
1077 * | |audioconv| |audioscale| | volume | |audiosink| |
1078 * | +-sink src-sink src-sink src-sink | |
1079 * | | +---------+ +----------+ +---------+ +---------+ |
1081 * +-------------------------------------------------------------+
1084 gen_audio_element (GstPlayBin * play_bin)
1087 GstElement *element;
1094 element = g_hash_table_lookup (play_bin->cache, "abin");
1095 if (element != NULL)
1098 if (play_bin->audio_sink) {
1099 sink = play_bin->audio_sink;
1101 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
1103 sink = gst_element_factory_make ("alsasink", "audiosink");
1108 play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
1111 gst_object_ref (sink);
1112 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
1114 element = gst_bin_new ("abin");
1115 gst_bin_add (GST_BIN_CAST (element), sink);
1117 conv = gst_element_factory_make ("audioconvert", "aconv");
1119 goto no_audioconvert;
1120 gst_bin_add (GST_BIN_CAST (element), conv);
1122 scale = gst_element_factory_make ("audioresample", "aresample");
1124 goto no_audioresample;
1125 gst_bin_add (GST_BIN_CAST (element), scale);
1127 volume = gst_element_factory_make ("volume", "volume");
1130 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
1131 play_bin->volume_element = GST_ELEMENT_CAST (gst_object_ref (volume));
1132 gst_bin_add (GST_BIN_CAST (element), volume);
1134 res = gst_element_link_pads (conv, "src", scale, "sink");
1135 res &= gst_element_link_pads (scale, "src", volume, "sink");
1136 res &= gst_element_link_pads (volume, "src", sink, NULL);
1140 pad = gst_element_get_static_pad (conv, "sink");
1141 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1142 gst_object_unref (pad);
1144 gst_element_set_state (element, GST_STATE_READY);
1146 /* since we're gonna add it to a bin but don't want to lose it,
1147 * we keep a reference. */
1148 gst_object_ref (element);
1149 g_hash_table_insert (play_bin->cache, "abin", element);
1156 post_missing_element_message (play_bin, "autoaudiosink");
1157 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1158 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
1163 post_missing_element_message (play_bin, "audioconvert");
1164 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1165 (_("Missing element '%s' - check your GStreamer installation."),
1166 "audioconvert"), ("possibly a liboil version mismatch?"));
1167 gst_object_unref (element);
1172 post_missing_element_message (play_bin, "audioresample");
1173 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1174 (_("Missing element '%s' - check your GStreamer installation."),
1175 "audioresample"), ("possibly a liboil version mismatch?"));
1176 gst_object_unref (element);
1181 post_missing_element_message (play_bin, "volume");
1182 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1183 (_("Missing element '%s' - check your GStreamer installation."),
1184 "volume"), ("possibly a liboil version mismatch?"));
1185 gst_object_unref (element);
1190 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1191 (NULL), ("Failed to configure the audio sink."));
1192 gst_object_unref (element);
1197 /* make the element (bin) that contains the elements needed to perform
1198 * visualisation ouput. The idea is to split the audio using tee, then
1199 * sending the output to the regular audio bin and the other output to
1200 * the vis plugin that transforms it into a video that is rendered with the
1201 * normal video bin. The video and audio bins are run in threads to make sure
1202 * they don't block eachother.
1204 * +-----------------------------------------------------------------------+
1206 * | +------+ +--------+ +----------------+ |
1207 * | | tee | | aqueue | | abin ... | |
1208 * | +-sink src-sink src-sink | |
1209 * | | | | +--------+ +----------------+ |
1211 * | | | | +------+ +------------+ +------+ +-----------+ |
1212 * | | | | |vqueue| | audioconv | | vis | | vbin ... | |
1213 * | | | src-sink src-sink + samp src-sink src-sink | |
1214 * | | | | +------+ +------------+ +------+ +-----------+ |
1218 * +-----------------------------------------------------------------------+
1221 gen_vis_element (GstPlayBin * play_bin)
1224 GstElement *element;
1232 GstElement *vqueue, *aqueue;
1235 /* errors are already posted when these fail. */
1236 asink = gen_audio_element (play_bin);
1239 vsink = gen_video_element (play_bin);
1241 gst_object_unref (asink);
1245 element = gst_bin_new ("visbin");
1246 tee = gst_element_factory_make ("tee", "tee");
1248 vqueue = gst_element_factory_make ("queue", "vqueue");
1249 aqueue = gst_element_factory_make ("queue", "aqueue");
1251 gst_bin_add (GST_BIN_CAST (element), asink);
1252 gst_bin_add (GST_BIN_CAST (element), vqueue);
1253 gst_bin_add (GST_BIN_CAST (element), aqueue);
1254 gst_bin_add (GST_BIN_CAST (element), vsink);
1255 gst_bin_add (GST_BIN_CAST (element), tee);
1257 conv = gst_element_factory_make ("audioconvert", "aconv");
1259 goto no_audioconvert;
1260 gst_bin_add (GST_BIN_CAST (element), conv);
1262 resamp = gst_element_factory_make ("audioresample", "aresamp");
1264 goto no_audioresample;
1265 gst_bin_add (GST_BIN_CAST (element), resamp);
1267 conv2 = gst_element_factory_make ("audioconvert", "aconv2");
1269 goto no_audioconvert;
1270 gst_bin_add (GST_BIN_CAST (element), conv2);
1272 if (play_bin->visualisation) {
1273 gst_object_ref (play_bin->visualisation);
1274 vis = play_bin->visualisation;
1276 vis = gst_element_factory_make ("goom", "vis");
1280 gst_bin_add (GST_BIN_CAST (element), vis);
1282 res = gst_element_link_pads (vqueue, "src", conv, "sink");
1283 res &= gst_element_link_pads (conv, "src", resamp, "sink");
1284 res &= gst_element_link_pads (resamp, "src", conv2, "sink");
1285 res &= gst_element_link_pads (conv2, "src", vis, "sink");
1286 res &= gst_element_link_pads (vis, "src", vsink, "sink");
1290 pad = gst_element_get_static_pad (aqueue, "sink");
1291 rpad = gst_element_get_request_pad (tee, "src%d");
1292 gst_pad_link (rpad, pad);
1293 gst_object_unref (rpad);
1294 gst_object_unref (pad);
1295 gst_element_link_pads (aqueue, "src", asink, "sink");
1297 pad = gst_element_get_static_pad (vqueue, "sink");
1298 rpad = gst_element_get_request_pad (tee, "src%d");
1299 gst_pad_link (rpad, pad);
1300 gst_object_unref (rpad);
1301 gst_object_unref (pad);
1303 pad = gst_element_get_static_pad (tee, "sink");
1304 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1305 gst_object_unref (pad);
1312 post_missing_element_message (play_bin, "audioconvert");
1313 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1314 (_("Missing element '%s' - check your GStreamer installation."),
1315 "audioconvert"), ("possibly a liboil version mismatch?"));
1316 gst_object_unref (element);
1321 post_missing_element_message (play_bin, "audioresample");
1322 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1323 (_("Missing element '%s' - check your GStreamer installation."),
1324 "audioresample"), (NULL));
1325 gst_object_unref (element);
1330 post_missing_element_message (play_bin, "goom");
1331 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1332 (_("Missing element '%s' - check your GStreamer installation."),
1334 gst_object_unref (element);
1339 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1340 (NULL), ("Failed to configure the visualisation element."));
1341 gst_object_unref (element);
1346 /* get rid of all installed sinks */
1348 remove_sinks (GstPlayBin * play_bin)
1352 GstElement *element;
1355 if (play_bin->cache == NULL)
1358 GST_DEBUG ("removesinks");
1359 element = g_hash_table_lookup (play_bin->cache, "abin");
1360 if (element != NULL) {
1361 parent = gst_element_get_parent (element);
1362 if (parent != NULL) {
1363 /* we remove the element from the parent so that
1364 * there is no unwanted state change when the parent
1366 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1367 gst_element_set_state (element, GST_STATE_NULL);
1368 gst_bin_remove (GST_BIN_CAST (parent), element);
1369 gst_object_unref (parent);
1371 pad = gst_element_get_static_pad (element, "sink");
1373 peer = gst_pad_get_peer (pad);
1375 gst_pad_unlink (peer, pad);
1376 gst_object_unref (peer);
1378 gst_object_unref (pad);
1381 element = g_hash_table_lookup (play_bin->cache, "vbin");
1382 if (element != NULL) {
1383 parent = gst_element_get_parent (element);
1384 if (parent != NULL) {
1385 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1386 gst_element_set_state (element, GST_STATE_NULL);
1387 gst_bin_remove (GST_BIN_CAST (parent), element);
1388 gst_object_unref (parent);
1390 pad = gst_element_get_static_pad (element, "sink");
1392 peer = gst_pad_get_peer (pad);
1394 gst_pad_unlink (peer, pad);
1395 gst_object_unref (peer);
1397 gst_object_unref (pad);
1401 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
1402 GstElement *element = GST_ELEMENT_CAST (sinks->data);
1406 pad = gst_element_get_static_pad (element, "sink");
1408 GST_LOG ("removing sink %p", element);
1410 peer = gst_pad_get_peer (pad);
1412 gst_pad_unlink (peer, pad);
1413 gst_object_unref (peer);
1415 gst_object_unref (pad);
1417 gst_element_set_state (element, GST_STATE_NULL);
1418 gst_bin_remove (GST_BIN_CAST (play_bin), element);
1420 g_list_free (play_bin->sinks);
1421 play_bin->sinks = NULL;
1423 if (play_bin->visualisation) {
1424 GstElement *vis_bin;
1427 GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
1429 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
1432 gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
1433 gst_object_unref (vis_bin);
1437 if (play_bin->frame) {
1438 gst_buffer_unref (play_bin->frame);
1439 play_bin->frame = NULL;
1442 if (play_bin->textoverlay_element) {
1443 gst_object_unref (play_bin->textoverlay_element);
1444 play_bin->textoverlay_element = NULL;
1447 if (play_bin->volume_element) {
1448 gst_object_unref (play_bin->volume_element);
1449 play_bin->volume_element = NULL;
1453 /* loop over the streams and set up the pipeline to play this
1454 * media file. First we count the number of audio and video streams.
1455 * If there is no video stream but there exists an audio stream,
1456 * we install a visualisation pipeline.
1458 * Also make sure to only connect the first audio and video pad. FIXME
1459 * this should eventually be handled with a tuner interface so that
1460 * one can switch the streams.
1462 * This function takes ownership of @sink.*
1465 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
1466 GstPad * subtitle_pad)
1469 GstPadLinkReturn linkres;
1471 GstStateChangeReturn stateret;
1474 g_return_val_if_fail (sink != NULL, FALSE);
1476 state = GST_STATE_PAUSED;
1478 /* this is only for debugging */
1479 parent = gst_pad_get_parent_element (srcpad);
1481 GST_DEBUG ("Adding sink %" GST_PTR_FORMAT
1482 " with state %d (parent: %d, peer: %d)", sink,
1483 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
1484 gst_object_unref (parent);
1486 gst_bin_add (GST_BIN_CAST (play_bin), sink);
1488 /* bring it to the required state so we can link to the peer without
1489 * breaking the flow */
1490 stateret = gst_element_set_state (sink, state);
1491 if (stateret == GST_STATE_CHANGE_FAILURE)
1494 /* we found a sink for this stream, now try to install it */
1495 sinkpad = gst_element_get_static_pad (sink, "sink");
1496 linkres = gst_pad_link (srcpad, sinkpad);
1497 gst_object_unref (sinkpad);
1499 /* try to link the pad of the sink to the stream */
1500 if (GST_PAD_LINK_FAILED (linkres))
1503 if (GST_IS_PAD (subtitle_pad)) {
1504 sinkpad = gst_element_get_static_pad (sink, "text_sink");
1505 linkres = gst_pad_link (subtitle_pad, sinkpad);
1506 gst_object_unref (sinkpad);
1509 /* try to link the subtitle pad of the sink to the stream, this is not
1511 if (GST_PAD_LINK_FAILED (linkres))
1512 goto subtitle_failed;
1515 /* we got the sink succesfully linked, now keep the sink
1516 * in our internal list */
1517 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
1524 gst_element_set_state (sink, GST_STATE_NULL);
1525 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1526 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1534 /* could not link this stream */
1535 caps = gst_pad_get_caps (srcpad);
1536 capsstr = gst_caps_to_string (caps);
1537 g_warning ("could not link %s: %d", capsstr, linkres);
1538 GST_DEBUG_OBJECT (play_bin,
1539 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1541 gst_caps_unref (caps);
1543 gst_element_set_state (sink, GST_STATE_NULL);
1544 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1551 /* could not link this stream */
1552 caps = gst_pad_get_caps (subtitle_pad);
1553 GST_WARNING_OBJECT (play_bin, "subtitle link failed when adding sink, "
1554 "caps = %" GST_PTR_FORMAT ", reason %d", caps, linkres);
1555 gst_caps_unref (caps);
1563 dummy_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
1568 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1570 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1571 gboolean have_video = FALSE;
1572 gboolean need_vis = FALSE;
1573 gboolean need_text = FALSE;
1574 gboolean need_spu = FALSE;
1575 GstPad *textsrcpad = NULL, *pad = NULL, *origtextsrcpad = NULL;
1577 gboolean res = TRUE;
1579 /* get rid of existing sinks */
1580 if (play_bin->sinks) {
1581 remove_sinks (play_bin);
1583 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1585 /* find out what to do */
1586 have_video = (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0);
1587 need_spu = (group->type[GST_STREAM_TYPE_SUBPICTURE - 1].npads != 0);
1589 if (have_video && group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1591 } else if (!have_video &&
1592 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1593 play_bin->visualisation != NULL) {
1597 /* now actually connect everything */
1600 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1602 sink = gen_vis_element (play_bin);
1604 sink = gen_audio_element (play_bin);
1610 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_AUDIO -
1612 res = add_sink (play_bin, sink, pad, NULL);
1613 gst_object_unref (pad);
1618 /* Create the video rendering bin, error is posted when this fails. */
1619 sink = gen_video_element (play_bin);
1623 sink = add_spu_element (play_bin, sink);
1627 GstObject *parent = NULL, *grandparent = NULL;
1628 GstPad *ghost = NULL;
1630 /* Add the subtitle overlay element into the video sink */
1631 sink = add_text_element (play_bin, sink);
1633 /* Link the incoming subtitle stream into the output bin */
1635 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_TEXT -
1638 /* This pad is from subtitle-bin, we need to create a ghost pad to have
1639 common grandparents */
1640 parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
1642 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
1643 gst_object_unref (textsrcpad);
1648 grandparent = gst_object_get_parent (parent);
1650 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
1651 gst_object_unref (parent);
1652 gst_object_unref (textsrcpad);
1657 /* We ghost the pad on subtitle_bin only, if the text pad is from the
1658 media demuxer we keep it as it is */
1659 if (!GST_IS_PLAY_BIN (grandparent)) {
1660 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
1661 "file, ghosting to a suitable hierarchy");
1662 /* Block the pad first, because as soon as we add a ghostpad, the queue
1663 * will try and start pushing */
1664 gst_pad_set_blocked_async (textsrcpad, TRUE, dummy_blocked_cb, NULL);
1665 origtextsrcpad = gst_object_ref (textsrcpad);
1667 ghost = gst_ghost_pad_new ("text_src", textsrcpad);
1668 if (!GST_IS_PAD (ghost)) {
1669 GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
1671 gst_object_unref (parent);
1672 gst_object_unref (grandparent);
1673 gst_object_unref (textsrcpad);
1678 gst_pad_set_active (ghost, TRUE);
1679 if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
1680 gst_object_unref (textsrcpad);
1681 textsrcpad = gst_object_ref (ghost);
1683 GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
1684 gst_pad_set_active (ghost, FALSE);
1685 gst_object_unref (ghost);
1686 gst_object_unref (textsrcpad);
1690 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
1691 "no changes to hierarchy needed");
1694 gst_object_unref (parent);
1695 gst_object_unref (grandparent);
1701 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_VIDEO -
1703 res = add_sink (play_bin, sink, pad, textsrcpad);
1704 gst_object_unref (pad);
1706 gst_object_unref (textsrcpad);
1707 if (origtextsrcpad) {
1708 gst_pad_set_blocked_async (origtextsrcpad, FALSE, dummy_blocked_cb, NULL);
1709 gst_object_unref (origtextsrcpad);
1712 /* If we have a DVD subpicture stream, link it to the SPU now */
1715 GstPad *spu_sink_pad;
1718 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_SUBPICTURE
1719 - 1].preroll, "src");
1720 spu_sink_pad = gst_element_get_static_pad (sink, "subpicture_sink");
1721 if (subpic_pad && spu_sink_pad) {
1722 GST_LOG_OBJECT (play_bin, "Linking DVD subpicture stream onto SPU");
1723 gst_pad_set_blocked_async (subpic_pad, TRUE, dummy_blocked_cb, NULL);
1724 if (gst_pad_link (subpic_pad, spu_sink_pad) != GST_PAD_LINK_OK) {
1725 GST_WARNING_OBJECT (play_bin,
1726 "Failed to link DVD subpicture stream onto SPU");
1728 gst_pad_set_blocked_async (subpic_pad, FALSE, dummy_blocked_cb, NULL);
1731 gst_object_unref (subpic_pad);
1733 gst_object_unref (spu_sink_pad);
1737 /* remove the sinks now, pipeline get_state will now wait for the
1738 * sinks to preroll */
1739 if (play_bin->fakesink) {
1740 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1741 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1742 play_bin->fakesink = NULL;
1749 playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin, gboolean visible)
1751 GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
1753 /* we're ignoring the case of someone setting the 'current-text' property
1754 * before textoverlay is set up (which is probably okay, since playbasebin
1755 * will just select the first subtitle stream as active stream regardless) */
1756 if (playbin->textoverlay_element != NULL) {
1757 GST_LOG_OBJECT (playbin, "setting subtitle visibility to %d", visible);
1758 g_object_set (playbin->textoverlay_element, "silent", !visible, NULL);
1763 playbin_set_audio_mute (GstPlayBaseBin * play_base_bin, gboolean mute)
1765 GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
1767 if (playbin->volume_element) {
1768 g_object_set (G_OBJECT (playbin->volume_element), "mute", mute, NULL);
1772 /* Send an event to our sinks until one of them works; don't then send to the
1773 * remaining sinks (unlike GstBin)
1776 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1778 GList *sinks = play_bin->sinks;
1779 gboolean res = TRUE;
1782 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1784 gst_event_ref (event);
1785 if ((res = gst_element_send_event (sink, event))) {
1786 GST_DEBUG_OBJECT (play_bin,
1787 "Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
1790 GST_DEBUG_OBJECT (play_bin,
1791 "Event failed when sent to sink %" GST_PTR_FORMAT, sink);
1793 sinks = g_list_next (sinks);
1796 gst_event_unref (event);
1801 /* We only want to send the event to a single sink (overriding GstBin's
1802 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1803 * events appropriately. So, this is a messy duplication of code. */
1805 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1807 gboolean res = FALSE;
1808 GstEventType event_type = GST_EVENT_TYPE (event);
1810 switch (event_type) {
1811 case GST_EVENT_SEEK:
1812 GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
1813 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1816 res = parent_class->send_event (element, event);
1824 value_list_append_structure_list (GValue * list_val, GstStructure ** first,
1825 GList * structure_list)
1829 for (l = structure_list; l != NULL; l = l->next) {
1830 GValue val = { 0, };
1833 *first = gst_structure_copy ((GstStructure *) l->data);
1835 g_value_init (&val, GST_TYPE_STRUCTURE);
1836 g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
1837 gst_value_list_append_value (list_val, &val);
1838 g_value_unset (&val);
1842 /* if it's a redirect message with multiple redirect locations we might
1843 * want to pick a different 'best' location depending on the required
1844 * bitrates and the connection speed */
1846 gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
1848 const GValue *locations_list, *location_val;
1849 GstMessage *new_msg;
1850 GstStructure *new_structure = NULL;
1851 GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
1852 GValue new_list = { 0, };
1854 GstPlayBaseBin *playbasebin = GST_PLAY_BASE_BIN (playbin);
1855 guint connection_speed = playbasebin->connection_speed;
1857 GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
1858 GST_DEBUG_OBJECT (playbin, "connection speed: %u", connection_speed);
1860 if (connection_speed == 0 || msg->structure == NULL)
1863 locations_list = gst_structure_get_value (msg->structure, "locations");
1864 if (locations_list == NULL)
1867 size = gst_value_list_get_size (locations_list);
1871 /* maintain existing order as much as possible, just sort references
1872 * with too high a bitrate to the end (the assumption being that if
1873 * bitrates are given they are given for all interesting streams and
1874 * that the you-need-at-least-version-xyz redirect has the same bitrate
1875 * as the lowest referenced redirect alternative) */
1876 for (i = 0; i < size; ++i) {
1877 const GstStructure *s;
1880 location_val = gst_value_list_get_value (locations_list, i);
1881 s = (const GstStructure *) g_value_get_boxed (location_val);
1882 if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
1883 GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
1884 l_neutral = g_list_append (l_neutral, (gpointer) s);
1885 } else if (bitrate > connection_speed) {
1886 GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
1887 l_bad = g_list_append (l_bad, (gpointer) s);
1888 } else if (bitrate <= connection_speed) {
1889 GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
1890 l_good = g_list_append (l_good, (gpointer) s);
1894 g_value_init (&new_list, GST_TYPE_LIST);
1895 value_list_append_structure_list (&new_list, &new_structure, l_good);
1896 value_list_append_structure_list (&new_list, &new_structure, l_neutral);
1897 value_list_append_structure_list (&new_list, &new_structure, l_bad);
1898 gst_structure_set_value (new_structure, "locations", &new_list);
1899 g_value_unset (&new_list);
1901 g_list_free (l_good);
1902 g_list_free (l_neutral);
1903 g_list_free (l_bad);
1905 new_msg = gst_message_new_element (msg->src, new_structure);
1906 gst_message_unref (msg);
1908 GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
1913 gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
1915 if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
1916 && gst_structure_has_name (msg->structure, "redirect")) {
1917 msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
1920 GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
1923 static GstStateChangeReturn
1924 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1926 GstStateChangeReturn ret;
1927 GstPlayBin *play_bin;
1929 play_bin = GST_PLAY_BIN (element);
1932 switch (transition) {
1933 case GST_STATE_CHANGE_READY_TO_PAUSED:
1934 /* this really is the easiest way to make the state change return
1935 * ASYNC until we added the sinks */
1936 if (!play_bin->fakesink) {
1937 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1938 gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
1945 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1946 if (ret == GST_STATE_CHANGE_FAILURE)
1949 switch (transition) {
1950 case GST_STATE_CHANGE_READY_TO_PAUSED:
1951 /* remember us being a live pipeline */
1952 play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
1953 GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
1955 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1956 /* FIXME Release audio device when we implement that */
1958 case GST_STATE_CHANGE_PAUSED_TO_READY:
1959 case GST_STATE_CHANGE_READY_TO_NULL:
1960 /* remove sinks we added */
1961 remove_sinks (play_bin);
1962 /* and there might be a fakesink we need to clean up now */
1963 if (play_bin->fakesink) {
1964 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1965 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1966 play_bin->fakesink = NULL;
1977 gst_play_bin_plugin_init (GstPlugin * plugin)
1979 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1981 return gst_element_register (plugin, "playbin", GST_RANK_NONE,