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"
234 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
235 #define GST_CAT_DEFAULT gst_play_bin_debug
237 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
238 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
239 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
240 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
241 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
243 #define VOLUME_MAX_DOUBLE 10.0
245 typedef struct _GstPlayBin GstPlayBin;
246 typedef struct _GstPlayBinClass GstPlayBinClass;
251 * High-level player element
255 GstPlayBaseBin parent;
257 /* the configurable elements */
258 GstElement *fakesink;
259 GstElement *audio_sink;
260 GstElement *video_sink;
261 GstElement *visualisation;
262 GstElement *pending_visualisation;
263 GstElement *volume_element;
264 GstElement *textoverlay_element;
265 GstElement *spu_element;
268 /* these are the currently active sinks */
271 /* the last captured frame for snapshots */
274 /* our cache for the sinks */
277 /* font description */
280 /* indication if the pipeline is live */
284 struct _GstPlayBinClass
286 GstPlayBaseBinClass parent_class;
307 static void gst_play_bin_class_init (GstPlayBinClass * klass);
308 static void gst_play_bin_init (GstPlayBin * play_bin);
309 static void gst_play_bin_dispose (GObject * object);
311 static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
312 GstPlayBaseGroup * group);
313 static void remove_sinks (GstPlayBin * play_bin);
314 static void playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin,
316 static void playbin_set_audio_mute (GstPlayBaseBin * play_base_bin,
319 static void gst_play_bin_set_property (GObject * object, guint prop_id,
320 const GValue * value, GParamSpec * spec);
321 static void gst_play_bin_get_property (GObject * object, guint prop_id,
322 GValue * value, GParamSpec * spec);
324 static gboolean gst_play_bin_send_event (GstElement * element,
326 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
327 GstStateChange transition);
329 static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
331 static GstElementClass *parent_class;
333 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
335 static const GstElementDetails gst_play_bin_details =
336 GST_ELEMENT_DETAILS ("Player Bin",
337 "Generic/Bin/Player",
338 "Autoplug and play media from an uri",
339 "Wim Taymans <wim.taymans@gmail.com>");
342 gst_play_bin_get_type (void)
344 static GType gst_play_bin_type = 0;
346 if (!gst_play_bin_type) {
347 static const GTypeInfo gst_play_bin_info = {
348 sizeof (GstPlayBinClass),
351 (GClassInitFunc) gst_play_bin_class_init,
356 (GInstanceInitFunc) gst_play_bin_init,
360 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
361 "GstPlayBin", &gst_play_bin_info, 0);
364 return gst_play_bin_type;
368 gst_play_bin_class_init (GstPlayBinClass * klass)
370 GObjectClass *gobject_klass;
371 GstElementClass *gstelement_klass;
372 GstBinClass *gstbin_klass;
373 GstPlayBaseBinClass *playbasebin_klass;
375 gobject_klass = (GObjectClass *) klass;
376 gstelement_klass = (GstElementClass *) klass;
377 gstbin_klass = (GstBinClass *) klass;
378 playbasebin_klass = (GstPlayBaseBinClass *) klass;
380 parent_class = g_type_class_peek_parent (klass);
382 gobject_klass->set_property = gst_play_bin_set_property;
383 gobject_klass->get_property = gst_play_bin_get_property;
385 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
386 g_param_spec_object ("video-sink", "Video Sink",
387 "the video output element to use (NULL = default sink)",
388 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
389 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
390 g_param_spec_object ("audio-sink", "Audio Sink",
391 "the audio output element to use (NULL = default sink)",
392 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
393 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
394 g_param_spec_object ("vis-plugin", "Vis plugin",
395 "the visualization element to use (NULL = none)",
396 GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
400 * Get or set the current audio stream volume. 1.0 means 100%,
401 * 0.0 means mute. This uses a linear volume scale.
404 g_object_class_install_property (gobject_klass, ARG_VOLUME,
405 g_param_spec_double ("volume", "volume", "volume",
406 0.0, VOLUME_MAX_DOUBLE, 1.0,
407 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
408 g_object_class_install_property (gobject_klass, ARG_FRAME,
409 gst_param_spec_mini_object ("frame", "Frame",
410 "The last frame (NULL = no video available)", GST_TYPE_BUFFER,
411 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
412 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
413 g_param_spec_string ("subtitle-font-desc", "Subtitle font description",
414 "Pango font description of font " "to be used for subtitle rendering",
415 NULL, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
417 gobject_klass->dispose = gst_play_bin_dispose;
419 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
421 gstelement_klass->change_state =
422 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
423 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
425 gstbin_klass->handle_message =
426 GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
428 playbasebin_klass->setup_output_pads = setup_sinks;
429 playbasebin_klass->set_subtitles_visible = playbin_set_subtitles_visible;
430 playbasebin_klass->set_audio_mute = playbin_set_audio_mute;
434 gst_play_bin_init (GstPlayBin * play_bin)
436 play_bin->video_sink = NULL;
437 play_bin->audio_sink = NULL;
438 play_bin->visualisation = NULL;
439 play_bin->pending_visualisation = NULL;
440 play_bin->volume_element = NULL;
441 play_bin->textoverlay_element = NULL;
442 play_bin->spu_element = NULL;
443 play_bin->volume = 1.0;
444 play_bin->sinks = NULL;
445 play_bin->frame = NULL;
446 play_bin->font_desc = NULL;
447 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
448 NULL, (GDestroyNotify) gst_object_unref);
452 gst_play_bin_dispose (GObject * object)
454 GstPlayBin *play_bin;
456 play_bin = GST_PLAY_BIN (object);
458 if (play_bin->cache != NULL) {
459 remove_sinks (play_bin);
460 g_hash_table_destroy (play_bin->cache);
461 play_bin->cache = NULL;
464 if (play_bin->audio_sink != NULL) {
465 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
466 gst_object_unref (play_bin->audio_sink);
467 play_bin->audio_sink = NULL;
469 if (play_bin->video_sink != NULL) {
470 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
471 gst_object_unref (play_bin->video_sink);
472 play_bin->video_sink = NULL;
474 if (play_bin->visualisation != NULL) {
475 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
476 gst_object_unref (play_bin->visualisation);
477 play_bin->visualisation = NULL;
479 if (play_bin->pending_visualisation != NULL) {
480 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
481 gst_object_unref (play_bin->pending_visualisation);
482 play_bin->pending_visualisation = NULL;
484 if (play_bin->textoverlay_element != NULL) {
485 gst_object_unref (play_bin->textoverlay_element);
486 play_bin->textoverlay_element = NULL;
488 if (play_bin->spu_element != NULL) {
489 gst_object_unref (play_bin->spu_element);
490 play_bin->spu_element = NULL;
492 g_free (play_bin->font_desc);
493 play_bin->font_desc = NULL;
495 G_OBJECT_CLASS (parent_class)->dispose (object);
499 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
502 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
504 if (play_bin->pending_visualisation)
505 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
510 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
513 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
514 GstBin *vis_bin = NULL;
515 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
517 GstElement *pending_visualisation;
519 GST_OBJECT_LOCK (play_bin);
520 pending_visualisation = play_bin->pending_visualisation;
521 play_bin->pending_visualisation = NULL;
522 GST_OBJECT_UNLOCK (play_bin);
524 /* We want to disable visualisation */
525 if (!GST_IS_ELEMENT (pending_visualisation)) {
526 /* Set visualisation element to READY */
527 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
532 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST
533 (play_bin->visualisation)));
535 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
539 vis_src_pad = gst_element_get_static_pad (play_bin->visualisation, "src");
540 vis_sink_pad = gst_pad_get_peer (tee_pad);
542 /* Can be fakesink */
543 if (GST_IS_PAD (vis_src_pad)) {
544 vqueue_pad = gst_pad_get_peer (vis_src_pad);
547 if (!GST_IS_PAD (vis_sink_pad)) {
551 /* Check the bin's state */
552 GST_OBJECT_LOCK (vis_bin);
553 bin_state = GST_STATE (vis_bin);
554 GST_OBJECT_UNLOCK (vis_bin);
557 gst_pad_unlink (tee_pad, vis_sink_pad);
558 gst_object_unref (vis_sink_pad);
561 if (GST_IS_PAD (vqueue_pad)) {
562 gst_pad_unlink (vis_src_pad, vqueue_pad);
563 gst_object_unref (vis_src_pad);
567 /* Remove from vis_bin */
568 gst_bin_remove (vis_bin, play_bin->visualisation);
569 /* Set state to NULL */
570 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
571 /* And loose our ref */
572 gst_object_unref (play_bin->visualisation);
574 if (pending_visualisation) {
575 /* Ref this new visualisation element before adding to the bin */
576 gst_object_ref (pending_visualisation);
577 /* Add the new one */
578 gst_bin_add (vis_bin, pending_visualisation);
579 /* Synchronizing state */
580 gst_element_set_state (pending_visualisation, bin_state);
582 vis_sink_pad = gst_element_get_static_pad (pending_visualisation, "sink");
583 vis_src_pad = gst_element_get_static_pad (pending_visualisation, "src");
585 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
590 gst_pad_link (tee_pad, vis_sink_pad);
591 gst_pad_link (vis_src_pad, vqueue_pad);
595 gst_object_unref (play_bin->visualisation);
596 play_bin->visualisation = pending_visualisation;
600 gst_object_unref (vis_sink_pad);
603 gst_object_unref (vis_src_pad);
606 gst_object_unref (vqueue_pad);
609 gst_object_unref (vis_bin);
612 /* Unblock the pad */
613 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
618 gst_play_bin_set_property (GObject * object, guint prop_id,
619 const GValue * value, GParamSpec * pspec)
621 GstPlayBin *play_bin;
623 play_bin = GST_PLAY_BIN (object);
627 if (play_bin->video_sink != NULL) {
628 gst_object_unref (play_bin->video_sink);
630 play_bin->video_sink = g_value_get_object (value);
631 if (play_bin->video_sink != NULL) {
632 gst_object_ref (play_bin->video_sink);
633 gst_object_sink (GST_OBJECT_CAST (play_bin->video_sink));
635 /* when changing the videosink, we just remove the
636 * video pipeline from the cache so that it will be
637 * regenerated with the new sink element */
638 g_hash_table_remove (play_bin->cache, "vbin");
641 if (play_bin->audio_sink != NULL) {
642 gst_object_unref (play_bin->audio_sink);
644 play_bin->audio_sink = g_value_get_object (value);
645 if (play_bin->audio_sink != NULL) {
646 gst_object_ref (play_bin->audio_sink);
647 gst_object_sink (GST_OBJECT_CAST (play_bin->audio_sink));
649 g_hash_table_remove (play_bin->cache, "abin");
653 GstElement *pending_visualisation =
654 GST_ELEMENT_CAST (g_value_get_object (value));
657 if (pending_visualisation) {
658 gst_object_ref (pending_visualisation);
659 gst_object_sink (pending_visualisation);
662 /* Do we already have a visualisation change pending ? */
663 GST_OBJECT_LOCK (play_bin);
664 if (play_bin->pending_visualisation) {
665 gst_object_unref (play_bin->pending_visualisation);
666 play_bin->pending_visualisation = pending_visualisation;
667 GST_OBJECT_UNLOCK (play_bin);
669 GST_OBJECT_UNLOCK (play_bin);
670 /* Was there a visualisation already set ? */
671 if (play_bin->visualisation != NULL) {
672 GstBin *vis_bin = NULL;
675 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST
676 (play_bin->visualisation)));
678 /* Check if the visualisation is already in a bin */
679 if (GST_IS_BIN (vis_bin)) {
680 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
682 /* Now get tee pad and block it async */
683 vis_sink_pad = gst_element_get_static_pad (play_bin->visualisation,
685 if (!GST_IS_PAD (vis_sink_pad)) {
688 tee_pad = gst_pad_get_peer (vis_sink_pad);
689 if (!GST_IS_PAD (tee_pad)) {
693 play_bin->pending_visualisation = pending_visualisation;
694 /* Block with callback */
695 gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
699 gst_object_unref (vis_sink_pad);
702 gst_object_unref (tee_pad);
704 gst_object_unref (vis_bin);
706 play_bin->visualisation = pending_visualisation;
709 play_bin->visualisation = pending_visualisation;
715 play_bin->volume = g_value_get_double (value);
716 if (play_bin->volume_element) {
717 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
718 play_bin->volume, NULL);
722 g_free (play_bin->font_desc);
723 play_bin->font_desc = g_strdup (g_value_get_string (value));
724 if (play_bin->textoverlay_element) {
725 g_object_set (G_OBJECT (play_bin->textoverlay_element),
726 "font-desc", g_value_get_string (value), NULL);
730 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
736 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
739 GstPlayBin *play_bin;
741 play_bin = GST_PLAY_BIN (object);
745 g_value_set_object (value, play_bin->video_sink);
748 g_value_set_object (value, play_bin->audio_sink);
751 g_value_set_object (value, play_bin->visualisation);
754 g_value_set_double (value, play_bin->volume);
757 GstBuffer *cur_frame = NULL;
759 gst_buffer_replace (&cur_frame, play_bin->frame);
760 gst_value_take_buffer (value, cur_frame);
764 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
769 /* signal fired when the identity has received a new buffer. This is used for
770 * making screenshots.
773 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
775 GstPlayBin *play_bin = GST_PLAY_BIN (data);
777 /* applications need to know the buffer caps,
778 * make sure they are always set on the frame */
779 if (GST_BUFFER_CAPS (frame) == NULL) {
782 if ((pad = gst_element_get_static_pad (identity, "sink"))) {
783 gst_buffer_set_caps (frame, GST_PAD_CAPS (pad));
784 gst_object_unref (pad);
788 gst_buffer_replace (&play_bin->frame, frame);
792 post_missing_element_message (GstPlayBin * playbin, const gchar * name)
796 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playbin), name);
797 gst_element_post_message (GST_ELEMENT_CAST (playbin), msg);
800 /* make the element (bin) that contains the elements needed to perform
801 * video display. We connect a handoff signal to identity so that we
802 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
804 * +-------------------------------------------------------------+
806 * | +--------+ +----------+ +----------+ +---------+ |
807 * | |identity| |colorspace| |videoscale| |videosink| |
808 * | +-sink src-sink src-sink src-sink | |
809 * | | +---+----+ +----------+ +----------+ +---------+ |
811 * +----------|--------------------------------------------------+
815 gen_video_element (GstPlayBin * play_bin)
822 GstElement *identity;
825 /* first see if we have it in the cache */
826 element = g_hash_table_lookup (play_bin->cache, "vbin");
827 if (element != NULL) {
831 if (play_bin->video_sink) {
832 sink = play_bin->video_sink;
834 sink = gst_element_factory_make ("autovideosink", "videosink");
836 sink = gst_element_factory_make ("xvimagesink", "videosink");
841 gst_object_ref (sink);
842 g_hash_table_insert (play_bin->cache, "video_sink", sink);
844 /* create a bin to hold objects, as we create them we add them to this bin so
845 * that when something goes wrong we only need to unref the bin */
846 element = gst_bin_new ("vbin");
847 gst_bin_add (GST_BIN_CAST (element), sink);
849 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
852 gst_bin_add (GST_BIN_CAST (element), conv);
854 scale = gst_element_factory_make ("videoscale", "vscale");
857 gst_bin_add (GST_BIN_CAST (element), scale);
859 identity = gst_element_factory_make ("identity", "id");
860 g_object_set (identity, "silent", TRUE, NULL);
861 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
862 gst_bin_add (GST_BIN_CAST (element), identity);
864 gst_element_link_pads (identity, "src", conv, "sink");
865 gst_element_link_pads (conv, "src", scale, "sink");
866 /* be more careful with the pad from the custom sink element, it might not
868 if (!gst_element_link_pads (scale, "src", sink, NULL))
871 pad = gst_element_get_static_pad (identity, "sink");
872 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
873 gst_object_unref (pad);
875 gst_element_set_state (element, GST_STATE_READY);
877 /* since we're gonna add it to a bin but don't want to lose it,
878 * we keep a reference. */
879 gst_object_ref (element);
880 g_hash_table_insert (play_bin->cache, "vbin", element);
887 post_missing_element_message (play_bin, "autovideosink");
888 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
889 (_("Both autovideosink and xvimagesink elements are missing.")),
895 post_missing_element_message (play_bin, "ffmpegcolorspace");
896 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
897 (_("Missing element '%s' - check your GStreamer installation."),
898 "ffmpegcolorspace"), (NULL));
899 gst_object_unref (element);
905 post_missing_element_message (play_bin, "videoscale");
906 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
907 (_("Missing element '%s' - check your GStreamer installation."),
908 "videoscale"), ("possibly a liboil version mismatch?"));
909 gst_object_unref (element);
914 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
915 (NULL), ("Failed to configure the video sink."));
916 gst_object_unref (element);
921 /* make an element for playback of video with subtitles embedded.
923 * +--------------------------------------------------+
924 * | tbin +-------------+ |
925 * | +-----+ | textoverlay | +------+ |
926 * | | csp | +--video_sink | | vbin | |
927 * video_sink-sink src+ +-text_sink src---sink | |
928 * | +-----+ | +-------------+ +------+ |
929 * text_sink-------------+ |
930 * +--------------------------------------------------+
932 * If there is no subtitle renderer this function will simply return the
933 * videosink without the text_sink pad.
936 add_text_element (GstPlayBin * play_bin, GstElement * vbin)
938 GstElement *element, *csp, *overlay;
942 overlay = gst_element_factory_make ("textoverlay", "overlay");
944 /* If no overlay return the video bin without subtitle support. */
949 element = gst_bin_new ("textbin");
951 /* Set some parameters */
952 g_object_set (G_OBJECT (overlay),
953 "halign", "center", "valign", "bottom", NULL);
954 if (play_bin->font_desc) {
955 g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
959 play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
961 /* we know this will succeed, as the video bin already created one before */
962 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
964 /* Add our elements */
965 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
968 gst_element_link_pads (csp, "src", overlay, "video_sink");
969 gst_element_link_pads (overlay, "src", vbin, "sink");
971 /* Add ghost pads on the subtitle bin */
972 pad = gst_element_get_static_pad (overlay, "text_sink");
973 gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
974 gst_object_unref (pad);
976 pad = gst_element_get_static_pad (csp, "sink");
977 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
978 gst_object_unref (pad);
980 /* If the vbin provides a subpicture sink pad, ghost it too */
981 pad = gst_element_get_static_pad (vbin, "subpicture_sink");
983 gst_element_add_pad (element, gst_ghost_pad_new ("subpicture_sink", pad));
984 gst_object_unref (pad);
987 /* Set state to READY */
988 gst_element_set_state (element, GST_STATE_READY);
995 post_missing_element_message (play_bin, "textoverlay");
996 GST_WARNING_OBJECT (play_bin,
997 "No overlay (pango) element, subtitles disabled");
1002 /* make an element for rendering DVD subpictures onto output video
1004 * +---------------------------------------------+
1005 * | tbin +--------+ |
1006 * | +-----+ | | +------+ |
1007 * | | csp | src-videosink | | vbin | |
1008 * video_sink-sink src+ | src-sink | |
1009 * | +-----+ +subpicture | +------+ |
1010 * subpicture_pad--------+ +--------+ |
1011 * +---------- ----------------------------------+
1015 add_spu_element (GstPlayBin * play_bin, GstElement * vbin)
1017 GstElement *element, *csp, *overlay;
1020 /* DVD spu overlay */
1021 GST_DEBUG_OBJECT (play_bin, "Attempting to insert DVD SPU element");
1023 overlay = gst_element_factory_make ("dvdspu", "overlay");
1025 /* If no overlay return the video bin without subpicture support. */
1029 /* Create our bin */
1030 element = gst_bin_new ("spubin");
1033 play_bin->spu_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
1035 /* we know this will succeed, as the video bin already created one before */
1036 csp = gst_element_factory_make ("ffmpegcolorspace", "spucsp");
1038 /* Add our elements */
1039 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
1042 gst_element_link_pads (csp, "src", overlay, "video");
1043 gst_element_link_pads (overlay, "src", vbin, "sink");
1045 /* Add ghost pad on the subpicture bin so it looks like vbin */
1046 pad = gst_element_get_static_pad (csp, "sink");
1047 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1048 gst_object_unref (pad);
1050 pad = gst_element_get_static_pad (overlay, "subpicture");
1051 gst_element_add_pad (element, gst_ghost_pad_new ("subpicture_sink", pad));
1052 gst_object_unref (pad);
1054 /* Set state to READY */
1055 gst_element_set_state (element, GST_STATE_READY);
1062 post_missing_element_message (play_bin, "dvdspu");
1063 GST_WARNING_OBJECT (play_bin,
1064 "No DVD overlay (dvdspu) element. "
1065 "menu highlight/subtitles unavailable");
1070 /* make the element (bin) that contains the elements needed to perform
1073 * +-------------------------------------------------------------+
1075 * | +---------+ +----------+ +---------+ +---------+ |
1076 * | |audioconv| |audioscale| | volume | |audiosink| |
1077 * | +-sink src-sink src-sink src-sink | |
1078 * | | +---------+ +----------+ +---------+ +---------+ |
1080 * +-------------------------------------------------------------+
1083 gen_audio_element (GstPlayBin * play_bin)
1086 GstElement *element;
1093 element = g_hash_table_lookup (play_bin->cache, "abin");
1094 if (element != NULL)
1097 if (play_bin->audio_sink) {
1098 sink = play_bin->audio_sink;
1100 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
1102 sink = gst_element_factory_make ("alsasink", "audiosink");
1107 play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
1110 gst_object_ref (sink);
1111 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
1113 element = gst_bin_new ("abin");
1114 gst_bin_add (GST_BIN_CAST (element), sink);
1116 conv = gst_element_factory_make ("audioconvert", "aconv");
1118 goto no_audioconvert;
1119 gst_bin_add (GST_BIN_CAST (element), conv);
1121 scale = gst_element_factory_make ("audioresample", "aresample");
1123 goto no_audioresample;
1124 gst_bin_add (GST_BIN_CAST (element), scale);
1126 volume = gst_element_factory_make ("volume", "volume");
1129 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
1130 play_bin->volume_element = volume;
1131 gst_bin_add (GST_BIN_CAST (element), volume);
1133 res = gst_element_link_pads (conv, "src", scale, "sink");
1134 res &= gst_element_link_pads (scale, "src", volume, "sink");
1135 res &= gst_element_link_pads (volume, "src", sink, NULL);
1139 pad = gst_element_get_static_pad (conv, "sink");
1140 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1141 gst_object_unref (pad);
1143 gst_element_set_state (element, GST_STATE_READY);
1145 /* since we're gonna add it to a bin but don't want to lose it,
1146 * we keep a reference. */
1147 gst_object_ref (element);
1148 g_hash_table_insert (play_bin->cache, "abin", element);
1155 post_missing_element_message (play_bin, "autoaudiosink");
1156 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1157 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
1162 post_missing_element_message (play_bin, "audioconvert");
1163 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1164 (_("Missing element '%s' - check your GStreamer installation."),
1165 "audioconvert"), ("possibly a liboil version mismatch?"));
1166 gst_object_unref (element);
1171 post_missing_element_message (play_bin, "audioresample");
1172 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1173 (_("Missing element '%s' - check your GStreamer installation."),
1174 "audioresample"), ("possibly a liboil version mismatch?"));
1175 gst_object_unref (element);
1180 post_missing_element_message (play_bin, "volume");
1181 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1182 (_("Missing element '%s' - check your GStreamer installation."),
1183 "volume"), ("possibly a liboil version mismatch?"));
1184 gst_object_unref (element);
1189 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1190 (NULL), ("Failed to configure the audio sink."));
1191 gst_object_unref (element);
1196 /* make the element (bin) that contains the elements needed to perform
1197 * visualisation ouput. The idea is to split the audio using tee, then
1198 * sending the output to the regular audio bin and the other output to
1199 * the vis plugin that transforms it into a video that is rendered with the
1200 * normal video bin. The video and audio bins are run in threads to make sure
1201 * they don't block eachother.
1203 * +-----------------------------------------------------------------------+
1205 * | +------+ +--------+ +----------------+ |
1206 * | | tee | | aqueue | | abin ... | |
1207 * | +-sink src-sink src-sink | |
1208 * | | | | +--------+ +----------------+ |
1210 * | | | | +------+ +------------+ +------+ +-----------+ |
1211 * | | | | |vqueue| | audioconv | | vis | | vbin ... | |
1212 * | | | src-sink src-sink + samp src-sink src-sink | |
1213 * | | | | +------+ +------------+ +------+ +-----------+ |
1217 * +-----------------------------------------------------------------------+
1220 gen_vis_element (GstPlayBin * play_bin)
1223 GstElement *element;
1231 GstElement *vqueue, *aqueue;
1234 /* errors are already posted when these fail. */
1235 asink = gen_audio_element (play_bin);
1238 vsink = gen_video_element (play_bin);
1240 gst_object_unref (asink);
1244 element = gst_bin_new ("visbin");
1245 tee = gst_element_factory_make ("tee", "tee");
1247 vqueue = gst_element_factory_make ("queue", "vqueue");
1248 aqueue = gst_element_factory_make ("queue", "aqueue");
1250 gst_bin_add (GST_BIN_CAST (element), asink);
1251 gst_bin_add (GST_BIN_CAST (element), vqueue);
1252 gst_bin_add (GST_BIN_CAST (element), aqueue);
1253 gst_bin_add (GST_BIN_CAST (element), vsink);
1254 gst_bin_add (GST_BIN_CAST (element), tee);
1256 conv = gst_element_factory_make ("audioconvert", "aconv");
1258 goto no_audioconvert;
1259 gst_bin_add (GST_BIN_CAST (element), conv);
1261 resamp = gst_element_factory_make ("audioresample", "aresamp");
1263 goto no_audioresample;
1264 gst_bin_add (GST_BIN_CAST (element), resamp);
1266 conv2 = gst_element_factory_make ("audioconvert", "aconv2");
1268 goto no_audioconvert;
1269 gst_bin_add (GST_BIN_CAST (element), conv2);
1271 if (play_bin->visualisation) {
1272 gst_object_ref (play_bin->visualisation);
1273 vis = play_bin->visualisation;
1275 vis = gst_element_factory_make ("goom", "vis");
1279 gst_bin_add (GST_BIN_CAST (element), vis);
1281 res = gst_element_link_pads (vqueue, "src", conv, "sink");
1282 res &= gst_element_link_pads (conv, "src", resamp, "sink");
1283 res &= gst_element_link_pads (resamp, "src", conv2, "sink");
1284 res &= gst_element_link_pads (conv2, "src", vis, "sink");
1285 res &= gst_element_link_pads (vis, "src", vsink, "sink");
1289 pad = gst_element_get_static_pad (aqueue, "sink");
1290 rpad = gst_element_get_request_pad (tee, "src%d");
1291 gst_pad_link (rpad, pad);
1292 gst_object_unref (rpad);
1293 gst_object_unref (pad);
1294 gst_element_link_pads (aqueue, "src", asink, "sink");
1296 pad = gst_element_get_static_pad (vqueue, "sink");
1297 rpad = gst_element_get_request_pad (tee, "src%d");
1298 gst_pad_link (rpad, pad);
1299 gst_object_unref (rpad);
1300 gst_object_unref (pad);
1302 pad = gst_element_get_static_pad (tee, "sink");
1303 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1304 gst_object_unref (pad);
1311 post_missing_element_message (play_bin, "audioconvert");
1312 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1313 (_("Missing element '%s' - check your GStreamer installation."),
1314 "audioconvert"), ("possibly a liboil version mismatch?"));
1315 gst_object_unref (element);
1320 post_missing_element_message (play_bin, "audioresample");
1321 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1322 (_("Missing element '%s' - check your GStreamer installation."),
1323 "audioresample"), (NULL));
1324 gst_object_unref (element);
1329 post_missing_element_message (play_bin, "goom");
1330 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1331 (_("Missing element '%s' - check your GStreamer installation."),
1333 gst_object_unref (element);
1338 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1339 (NULL), ("Failed to configure the visualisation element."));
1340 gst_object_unref (element);
1345 /* get rid of all installed sinks */
1347 remove_sinks (GstPlayBin * play_bin)
1351 GstElement *element;
1354 if (play_bin->cache == NULL)
1357 GST_DEBUG ("removesinks");
1358 element = g_hash_table_lookup (play_bin->cache, "abin");
1359 if (element != NULL) {
1360 parent = gst_element_get_parent (element);
1361 if (parent != NULL) {
1362 /* we remove the element from the parent so that
1363 * there is no unwanted state change when the parent
1365 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1366 gst_element_set_state (element, GST_STATE_NULL);
1367 gst_bin_remove (GST_BIN_CAST (parent), element);
1368 gst_object_unref (parent);
1370 pad = gst_element_get_static_pad (element, "sink");
1372 peer = gst_pad_get_peer (pad);
1374 gst_pad_unlink (peer, pad);
1375 gst_object_unref (peer);
1377 gst_object_unref (pad);
1380 element = g_hash_table_lookup (play_bin->cache, "vbin");
1381 if (element != NULL) {
1382 parent = gst_element_get_parent (element);
1383 if (parent != NULL) {
1384 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1385 gst_element_set_state (element, GST_STATE_NULL);
1386 gst_bin_remove (GST_BIN_CAST (parent), element);
1387 gst_object_unref (parent);
1389 pad = gst_element_get_static_pad (element, "sink");
1391 peer = gst_pad_get_peer (pad);
1393 gst_pad_unlink (peer, pad);
1394 gst_object_unref (peer);
1396 gst_object_unref (pad);
1400 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
1401 GstElement *element = GST_ELEMENT_CAST (sinks->data);
1405 pad = gst_element_get_static_pad (element, "sink");
1407 GST_LOG ("removing sink %p", element);
1409 peer = gst_pad_get_peer (pad);
1411 gst_pad_unlink (peer, pad);
1412 gst_object_unref (peer);
1414 gst_object_unref (pad);
1416 gst_element_set_state (element, GST_STATE_NULL);
1417 gst_bin_remove (GST_BIN_CAST (play_bin), element);
1419 g_list_free (play_bin->sinks);
1420 play_bin->sinks = NULL;
1422 if (play_bin->visualisation) {
1423 GstElement *vis_bin;
1426 GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
1428 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
1431 gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
1432 gst_object_unref (vis_bin);
1436 if (play_bin->frame) {
1437 gst_buffer_unref (play_bin->frame);
1438 play_bin->frame = NULL;
1441 if (play_bin->textoverlay_element) {
1442 gst_object_unref (play_bin->textoverlay_element);
1443 play_bin->textoverlay_element = NULL;
1447 /* loop over the streams and set up the pipeline to play this
1448 * media file. First we count the number of audio and video streams.
1449 * If there is no video stream but there exists an audio stream,
1450 * we install a visualisation pipeline.
1452 * Also make sure to only connect the first audio and video pad. FIXME
1453 * this should eventually be handled with a tuner interface so that
1454 * one can switch the streams.
1456 * This function takes ownership of @sink.*
1459 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
1460 GstPad * subtitle_pad)
1463 GstPadLinkReturn linkres;
1465 GstStateChangeReturn stateret;
1468 g_return_val_if_fail (sink != NULL, FALSE);
1470 state = GST_STATE_PAUSED;
1472 /* this is only for debugging */
1473 parent = gst_pad_get_parent_element (srcpad);
1475 GST_DEBUG ("Adding sink %" GST_PTR_FORMAT
1476 " with state %d (parent: %d, peer: %d)", sink,
1477 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
1478 gst_object_unref (parent);
1480 gst_bin_add (GST_BIN_CAST (play_bin), sink);
1482 /* bring it to the required state so we can link to the peer without
1483 * breaking the flow */
1484 stateret = gst_element_set_state (sink, state);
1485 if (stateret == GST_STATE_CHANGE_FAILURE)
1488 /* we found a sink for this stream, now try to install it */
1489 sinkpad = gst_element_get_static_pad (sink, "sink");
1490 linkres = gst_pad_link (srcpad, sinkpad);
1491 gst_object_unref (sinkpad);
1493 /* try to link the pad of the sink to the stream */
1494 if (GST_PAD_LINK_FAILED (linkres))
1497 if (GST_IS_PAD (subtitle_pad)) {
1498 sinkpad = gst_element_get_static_pad (sink, "text_sink");
1499 linkres = gst_pad_link (subtitle_pad, sinkpad);
1500 gst_object_unref (sinkpad);
1503 /* try to link the subtitle pad of the sink to the stream, this is not
1505 if (GST_PAD_LINK_FAILED (linkres))
1506 goto subtitle_failed;
1509 /* we got the sink succesfully linked, now keep the sink
1510 * in our internal list */
1511 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
1518 gst_element_set_state (sink, GST_STATE_NULL);
1519 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1520 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1528 /* could not link this stream */
1529 caps = gst_pad_get_caps (srcpad);
1530 capsstr = gst_caps_to_string (caps);
1531 g_warning ("could not link %s: %d", capsstr, linkres);
1532 GST_DEBUG_OBJECT (play_bin,
1533 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1535 gst_caps_unref (caps);
1537 gst_element_set_state (sink, GST_STATE_NULL);
1538 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1545 /* could not link this stream */
1546 caps = gst_pad_get_caps (subtitle_pad);
1547 GST_WARNING_OBJECT (play_bin, "subtitle link failed when adding sink, "
1548 "caps = %" GST_PTR_FORMAT ", reason %d", caps, linkres);
1549 gst_caps_unref (caps);
1557 dummy_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
1562 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1564 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1565 gboolean have_video = FALSE;
1566 gboolean need_vis = FALSE;
1567 gboolean need_text = FALSE;
1568 gboolean need_spu = FALSE;
1569 GstPad *textsrcpad = NULL, *pad = NULL, *origtextsrcpad = NULL;
1571 gboolean res = TRUE;
1573 /* get rid of existing sinks */
1574 if (play_bin->sinks) {
1575 remove_sinks (play_bin);
1577 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1579 /* find out what to do */
1580 have_video = (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0);
1581 need_spu = (group->type[GST_STREAM_TYPE_SUBPICTURE - 1].npads != 0);
1583 if (have_video && group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1585 } else if (!have_video &&
1586 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1587 play_bin->visualisation != NULL) {
1591 /* now actually connect everything */
1594 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1596 sink = gen_vis_element (play_bin);
1598 sink = gen_audio_element (play_bin);
1604 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_AUDIO -
1606 res = add_sink (play_bin, sink, pad, NULL);
1607 gst_object_unref (pad);
1612 /* Create the video rendering bin, error is posted when this fails. */
1613 sink = gen_video_element (play_bin);
1617 sink = add_spu_element (play_bin, sink);
1621 GstObject *parent = NULL, *grandparent = NULL;
1622 GstPad *ghost = NULL;
1624 /* Add the subtitle overlay element into the video sink */
1625 sink = add_text_element (play_bin, sink);
1627 /* Link the incoming subtitle stream into the output bin */
1629 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_TEXT -
1632 /* This pad is from subtitle-bin, we need to create a ghost pad to have
1633 common grandparents */
1634 parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
1636 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
1637 gst_object_unref (textsrcpad);
1642 grandparent = gst_object_get_parent (parent);
1644 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
1645 gst_object_unref (parent);
1646 gst_object_unref (textsrcpad);
1651 /* We ghost the pad on subtitle_bin only, if the text pad is from the
1652 media demuxer we keep it as it is */
1653 if (!GST_IS_PLAY_BIN (grandparent)) {
1654 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
1655 "file, ghosting to a suitable hierarchy");
1656 /* Block the pad first, because as soon as we add a ghostpad, the queue
1657 * will try and start pushing */
1658 gst_pad_set_blocked_async (textsrcpad, TRUE, dummy_blocked_cb, NULL);
1659 origtextsrcpad = gst_object_ref (textsrcpad);
1661 ghost = gst_ghost_pad_new ("text_src", textsrcpad);
1662 if (!GST_IS_PAD (ghost)) {
1663 GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
1665 gst_object_unref (parent);
1666 gst_object_unref (grandparent);
1667 gst_object_unref (textsrcpad);
1672 gst_pad_set_active (ghost, TRUE);
1673 if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
1674 gst_object_unref (textsrcpad);
1675 textsrcpad = gst_object_ref (ghost);
1677 GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
1678 gst_pad_set_active (ghost, FALSE);
1679 gst_object_unref (ghost);
1680 gst_object_unref (textsrcpad);
1684 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
1685 "no changes to hierarchy needed");
1688 gst_object_unref (parent);
1689 gst_object_unref (grandparent);
1695 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_VIDEO -
1697 res = add_sink (play_bin, sink, pad, textsrcpad);
1698 gst_object_unref (pad);
1700 gst_object_unref (textsrcpad);
1701 if (origtextsrcpad) {
1702 gst_pad_set_blocked_async (origtextsrcpad, FALSE, dummy_blocked_cb, NULL);
1703 gst_object_unref (origtextsrcpad);
1706 /* If we have a DVD subpicture stream, link it to the SPU now */
1709 GstPad *spu_sink_pad;
1712 gst_element_get_static_pad (group->type[GST_STREAM_TYPE_SUBPICTURE
1713 - 1].preroll, "src");
1714 spu_sink_pad = gst_element_get_static_pad (sink, "subpicture_sink");
1715 if (subpic_pad && spu_sink_pad) {
1716 GST_LOG_OBJECT (play_bin, "Linking DVD subpicture stream onto SPU");
1717 gst_pad_set_blocked_async (subpic_pad, TRUE, dummy_blocked_cb, NULL);
1718 if (gst_pad_link (subpic_pad, spu_sink_pad) != GST_PAD_LINK_OK) {
1719 GST_WARNING_OBJECT (play_bin,
1720 "Failed to link DVD subpicture stream onto SPU");
1722 gst_pad_set_blocked_async (subpic_pad, FALSE, dummy_blocked_cb, NULL);
1725 gst_object_unref (subpic_pad);
1727 gst_object_unref (spu_sink_pad);
1731 /* remove the sinks now, pipeline get_state will now wait for the
1732 * sinks to preroll */
1733 if (play_bin->fakesink) {
1734 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1735 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1736 play_bin->fakesink = NULL;
1743 playbin_set_subtitles_visible (GstPlayBaseBin * play_base_bin, gboolean visible)
1745 GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
1747 /* we're ignoring the case of someone setting the 'current-text' property
1748 * before textoverlay is set up (which is probably okay, since playbasebin
1749 * will just select the first subtitle stream as active stream regardless) */
1750 if (playbin->textoverlay_element != NULL) {
1751 GST_LOG_OBJECT (playbin, "setting subtitle visibility to %d", visible);
1752 g_object_set (playbin->textoverlay_element, "silent", !visible, NULL);
1757 playbin_set_audio_mute (GstPlayBaseBin * play_base_bin, gboolean mute)
1759 GstPlayBin *playbin = GST_PLAY_BIN (play_base_bin);
1761 if (playbin->volume_element) {
1762 g_object_set (G_OBJECT (playbin->volume_element), "mute", mute, NULL);
1766 /* Send an event to our sinks until one of them works; don't then send to the
1767 * remaining sinks (unlike GstBin)
1770 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1772 GList *sinks = play_bin->sinks;
1773 gboolean res = TRUE;
1776 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1778 gst_event_ref (event);
1779 if ((res = gst_element_send_event (sink, event))) {
1780 GST_DEBUG_OBJECT (play_bin,
1781 "Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
1784 GST_DEBUG_OBJECT (play_bin,
1785 "Event failed when sent to sink %" GST_PTR_FORMAT, sink);
1787 sinks = g_list_next (sinks);
1790 gst_event_unref (event);
1795 /* We only want to send the event to a single sink (overriding GstBin's
1796 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1797 * events appropriately. So, this is a messy duplication of code. */
1799 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1801 gboolean res = FALSE;
1802 GstEventType event_type = GST_EVENT_TYPE (event);
1804 switch (event_type) {
1805 case GST_EVENT_SEEK:
1806 GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
1807 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1810 res = parent_class->send_event (element, event);
1818 value_list_append_structure_list (GValue * list_val, GstStructure ** first,
1819 GList * structure_list)
1823 for (l = structure_list; l != NULL; l = l->next) {
1824 GValue val = { 0, };
1827 *first = gst_structure_copy ((GstStructure *) l->data);
1829 g_value_init (&val, GST_TYPE_STRUCTURE);
1830 g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
1831 gst_value_list_append_value (list_val, &val);
1832 g_value_unset (&val);
1836 /* if it's a redirect message with multiple redirect locations we might
1837 * want to pick a different 'best' location depending on the required
1838 * bitrates and the connection speed */
1840 gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
1842 const GValue *locations_list, *location_val;
1843 GstMessage *new_msg;
1844 GstStructure *new_structure = NULL;
1845 GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
1846 GValue new_list = { 0, };
1848 GstPlayBaseBin *playbasebin = GST_PLAY_BASE_BIN (playbin);
1849 guint connection_speed = playbasebin->connection_speed;
1851 GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
1852 GST_DEBUG_OBJECT (playbin, "connection speed: %u", connection_speed);
1854 if (connection_speed == 0 || msg->structure == NULL)
1857 locations_list = gst_structure_get_value (msg->structure, "locations");
1858 if (locations_list == NULL)
1861 size = gst_value_list_get_size (locations_list);
1865 /* maintain existing order as much as possible, just sort references
1866 * with too high a bitrate to the end (the assumption being that if
1867 * bitrates are given they are given for all interesting streams and
1868 * that the you-need-at-least-version-xyz redirect has the same bitrate
1869 * as the lowest referenced redirect alternative) */
1870 for (i = 0; i < size; ++i) {
1871 const GstStructure *s;
1874 location_val = gst_value_list_get_value (locations_list, i);
1875 s = (const GstStructure *) g_value_get_boxed (location_val);
1876 if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
1877 GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
1878 l_neutral = g_list_append (l_neutral, (gpointer) s);
1879 } else if (bitrate > connection_speed) {
1880 GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
1881 l_bad = g_list_append (l_bad, (gpointer) s);
1882 } else if (bitrate <= connection_speed) {
1883 GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
1884 l_good = g_list_append (l_good, (gpointer) s);
1888 g_value_init (&new_list, GST_TYPE_LIST);
1889 value_list_append_structure_list (&new_list, &new_structure, l_good);
1890 value_list_append_structure_list (&new_list, &new_structure, l_neutral);
1891 value_list_append_structure_list (&new_list, &new_structure, l_bad);
1892 gst_structure_set_value (new_structure, "locations", &new_list);
1893 g_value_unset (&new_list);
1895 g_list_free (l_good);
1896 g_list_free (l_neutral);
1897 g_list_free (l_bad);
1899 new_msg = gst_message_new_element (msg->src, new_structure);
1900 gst_message_unref (msg);
1902 GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
1907 gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
1909 if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
1910 && gst_structure_has_name (msg->structure, "redirect")) {
1911 msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
1914 GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
1917 static GstStateChangeReturn
1918 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1920 GstStateChangeReturn ret;
1921 GstPlayBin *play_bin;
1923 play_bin = GST_PLAY_BIN (element);
1926 switch (transition) {
1927 case GST_STATE_CHANGE_READY_TO_PAUSED:
1928 /* this really is the easiest way to make the state change return
1929 * ASYNC until we added the sinks */
1930 if (!play_bin->fakesink) {
1931 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1932 gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
1939 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1940 if (ret == GST_STATE_CHANGE_FAILURE)
1943 switch (transition) {
1944 case GST_STATE_CHANGE_READY_TO_PAUSED:
1945 /* remember us being a live pipeline */
1946 play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
1947 GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
1949 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1950 /* FIXME Release audio device when we implement that */
1952 case GST_STATE_CHANGE_PAUSED_TO_READY:
1953 case GST_STATE_CHANGE_READY_TO_NULL:
1954 /* remove sinks we added */
1955 remove_sinks (play_bin);
1956 /* and there might be a fakesink we need to clean up now */
1957 if (play_bin->fakesink) {
1958 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1959 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1960 play_bin->fakesink = NULL;
1971 gst_play_bin_plugin_init (GstPlugin * plugin)
1973 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1975 return gst_element_register (plugin, "playbin", GST_RANK_NONE,