2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * SECTION:element-playbin
25 * Playbin provides a stand-alone everything-in-one abstraction for an
26 * audio and/or video player.
29 * It can handle both audio and video files and features
32 * automatic file type recognition and based on that automatic
33 * selection and usage of the right audio/video/subtitle demuxers/decoders
36 * visualisations for audio files
39 * subtitle support for video files
42 * stream selection between different audio/subtitles streams
45 * meta info (tag) extraction
48 * easy access to the last video frame
51 * buffering when playing streams over a network
58 * <title>Usage</title>
60 * A playbin element can be created just like any other element using
61 * gst_element_factory_make(). The file/URI to play should be set via the "uri"
62 * property. This must be an absolute URI, relative file paths are not allowed.
63 * Example URIs are file:///home/joe/movie.avi or http://www.joedoe.com/foo.ogg
66 * Playbin is a #GstPipeline. It will notify the application of everything
67 * that's happening (errors, end of stream, tags found, state changes, etc.)
68 * by posting messages on its #GstBus. The application needs to watch the
72 * Playback can be initiated by setting the element to PLAYING state using
73 * gst_element_set_state(). Note that the state change will take place in
74 * the background in a separate thread, when the function returns playback
75 * is probably not happening yet and any errors might not have occured yet.
76 * Applications using playbin should ideally be written to deal with things
77 * completely asynchroneous.
80 * When playback has finished (an EOS message has been received on the bus)
81 * or an error has occured (an ERROR message has been received on the bus) or
82 * the user wants to play a different track, playbin should be set back to
83 * READY or NULL state, then the "uri" property should be set to the new
84 * location and then playbin be set to PLAYING state again.
87 * Seeking can be done using gst_element_seek_simple() or gst_element_seek()
88 * on the playbin element. Again, the seek will not be executed
89 * instantaneously, but will be done in a background thread. When the seek
90 * call returns the seek will most likely still be in process. An application
91 * may wait for the seek to finish (or fail) using gst_element_get_state() with
92 * -1 as the timeout, but this will block the user interface and is not
96 * Applications may query the current position and duration of the stream
97 * via gst_element_query_position() and gst_element_query_duration() and
98 * setting the format passed to GST_FORMAT_TIME. If the query was successful,
99 * the duration or position will have been returned in units of nanoseconds.
101 * <title>Advanced Usage: specifying the audio and video sink</title>
103 * By default, if no audio sink or video sink has been specified via the
104 * "audio-sink" or "video-sink" property, playbin will use the autoaudiosink
105 * and autovideosink elements to find the first-best available output method.
106 * This should work in most cases, but is not always desirable. Often either
107 * the user or application might want to specify more explicitly what to use
108 * for audio and video output.
111 * If the application wants more control over how audio or video should be
112 * output, it may create the audio/video sink elements itself (for example
113 * using gst_element_factory_make()) and provide them to playbin using the
114 * "audio-sink" or "video-sink" property.
117 * GNOME-based applications, for example, will usually want to create
118 * gconfaudiosink and gconfvideosink elements and make playbin use those,
119 * so that output happens to whatever the user has configured in the GNOME
120 * Multimedia System Selector confinguration dialog.
123 * The sink elements do not necessarily need to be ready-made sinks. It is
124 * possible to create container elements that look like a sink to playbin,
125 * but in reality contain a number of custom elements linked together. This
126 * can be achieved by creating a #GstBin and putting elements in there and
127 * linking them, and then creating a sink #GstGhostPad for the bin and pointing
128 * it to the sink pad of the first element within the bin. This can be used
129 * for a number of purposes, for example to force output to a particular
130 * format or to modify or observe the data before it is output.
133 * It is also possible to 'suppress' audio and/or video output by using
134 * 'fakesink' elements (or capture it from there using the fakesink element's
135 * "handoff" signal, which, nota bene, is fired from the streaming thread!).
137 * <title>Retrieving Tags and Other Meta Data</title>
139 * Most of the common meta data (artist, title, etc.) can be retrieved by
140 * watching for TAG messages on the pipeline's bus (see above).
143 * Other more specific meta information like width/height/framerate of video
144 * streams or samplerate/number of channels of audio streams can be obtained
145 * using the "stream-info" property, which will return a GList of stream info
146 * objects, one for each stream. These are opaque objects that can only be
147 * accessed via the standard GObject property interface, ie. g_object_get().
148 * Each stream info object has the following properties:
150 * <listitem>"object" (GstObject) (the decoder source pad usually)</listitem>
151 * <listitem>"type" (enum) (if this is an audio/video/subtitle stream)</listitem>
152 * <listitem>"decoder" (string) (name of decoder used to decode this stream)</listitem>
153 * <listitem>"mute" (boolean) (to mute or unmute this stream)</listitem>
154 * <listitem>"caps" (GstCaps) (caps of the decoded stream)</listitem>
155 * <listitem>"language-code" (string) (ISO-639 language code for this stream, mostly used for audio/subtitle streams)</listitem>
156 * <listitem>"codec" (string) (format this stream was encoded in)</listitem>
158 * Stream information from the stream-info properties is best queried once
159 * playbin has changed into PAUSED or PLAYING state (which can be detected
160 * via a state-changed message on the bus where old_state=READY and
161 * new_state=PAUSED), since before that the list might not be complete yet or
162 * not contain all available information (like language-codes).
164 * <title>Buffering</title>
166 * Playbin handles buffering automatically for the most part, but applications
167 * need to handle parts of the buffering process as well. Whenever playbin is
168 * buffering, it will post BUFFERING messages on the bus with a percentage
169 * value that shows the progress of the buffering process. Applications need
170 * to set playbin to PLAYING or PAUSED state in response to these messages.
171 * They may also want to convey the buffering progress to the user in some
172 * way. Here is how to extract the percentage information from the message
173 * (requires GStreamer >= 0.10.11):
177 * switch (GST_MESSAGE_TYPE (msg)) {
178 * case GST_MESSAGE_BUFFERING: {
180 * gst_message_parse_buffering (msg, &percent);
181 * g_print ("Buffering (%%u percent done)", percent);
187 * Note that applications should keep/set the pipeline in the PAUSED state when
188 * a BUFFERING message is received with a buffer percent value < 100 and set
189 * the pipeline back to PLAYING state when a BUFFERING message with a value
190 * of 100 percent is received (if PLAYING is the desired state, that is).
192 * <title>Embedding the video window in your application</title>
194 * By default, playbin (or rather the video sinks used) will create their own
195 * window. Applications will usually want to force output to a window of their
196 * own, however. This can be done using the GstXOverlay interface, which most
197 * video sinks implement. See the documentation there for more details.
199 * <title>Specifying which CD/DVD device to use</title>
201 * The device to use for CDs/DVDs needs to be set on the source element
202 * playbin creates before it is opened. The only way to do this at the moment
203 * is to connect to playbin's "notify::source" signal, which will be emitted
204 * by playbin when it has created the source element for a particular URI.
205 * In the signal callback you can check if the source element has a "device"
206 * property and set it appropriately. In future ways might be added to specify
207 * the device as part of the URI, but at the time of writing this is not
210 * <title>Examples</title>
212 * Here is a simple pipeline to play back a video or audio file:
214 * gst-launch -v playbin uri=file:///path/to/somefile.avi
216 * This will play back the given AVI video file, given that the video and
217 * audio decoders required to decode the content are installed. Since no
218 * special audio sink or video sink is supplied (not possible via gst-launch),
219 * playbin will try to find a suitable audio and video sink automatically
220 * using the autoaudiosink and autovideosink elements.
223 * Here is a another pipeline to play track 4 of an audio CD:
225 * gst-launch -v playbin uri=cdda://4
227 * This will play back track 4 on an audio CD in your disc drive (assuming
228 * the drive is detected automatically by the plugin).
231 * Here is a another pipeline to play title 1 of a DVD:
233 * gst-launch -v playbin uri=dvd://1
235 * This will play back title 1 of a DVD in your disc drive (assuming
236 * the drive is detected automatically by the plugin).
248 #include <gst/gst-i18n-plugin.h>
249 #include <gst/utils/base-utils.h>
251 #include "gstplaybasebin.h"
253 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
254 #define GST_CAT_DEFAULT gst_play_bin_debug
256 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
257 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
258 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
259 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
260 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
262 #define VOLUME_MAX_DOUBLE 10.0
263 #define CONNECTION_SPEED_DEFAULT 0
265 typedef struct _GstPlayBin GstPlayBin;
266 typedef struct _GstPlayBinClass GstPlayBinClass;
270 GstPlayBaseBin parent;
272 /* the configurable elements */
273 GstElement *fakesink;
274 GstElement *audio_sink;
275 GstElement *video_sink;
276 GstElement *visualisation;
277 GstElement *pending_visualisation;
278 GstElement *volume_element;
279 GstElement *textoverlay_element;
282 /* these are the currently active sinks */
285 /* the last captured frame for snapshots */
288 /* our cache for the sinks */
291 /* font description */
294 /* connection speed in bits/sec (0 = unknown) */
295 guint connection_speed;
297 /* indication if the pipeline is live */
301 struct _GstPlayBinClass
303 GstPlayBaseBinClass parent_class;
325 static void gst_play_bin_class_init (GstPlayBinClass * klass);
326 static void gst_play_bin_init (GstPlayBin * play_bin);
327 static void gst_play_bin_dispose (GObject * object);
329 static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
330 GstPlayBaseGroup * group);
331 static void remove_sinks (GstPlayBin * play_bin);
333 static void gst_play_bin_set_property (GObject * object, guint prop_id,
334 const GValue * value, GParamSpec * spec);
335 static void gst_play_bin_get_property (GObject * object, guint prop_id,
336 GValue * value, GParamSpec * spec);
338 static gboolean gst_play_bin_send_event (GstElement * element,
340 static gboolean gst_play_bin_set_clock_func (GstElement * element,
342 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
343 GstStateChange transition);
345 static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
347 static GstElementClass *parent_class;
349 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
351 static const GstElementDetails gst_play_bin_details =
352 GST_ELEMENT_DETAILS ("Player Bin",
353 "Generic/Bin/Player",
354 "Autoplug and play media from an uri",
355 "Wim Taymans <wim@fluendo.com>");
358 gst_play_bin_get_type (void)
360 static GType gst_play_bin_type = 0;
362 if (!gst_play_bin_type) {
363 static const GTypeInfo gst_play_bin_info = {
364 sizeof (GstPlayBinClass),
367 (GClassInitFunc) gst_play_bin_class_init,
372 (GInstanceInitFunc) gst_play_bin_init,
376 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
377 "GstPlayBin", &gst_play_bin_info, 0);
380 return gst_play_bin_type;
384 gst_play_bin_class_init (GstPlayBinClass * klass)
386 GObjectClass *gobject_klass;
387 GstElementClass *gstelement_klass;
388 GstBinClass *gstbin_klass;
389 GstPlayBaseBinClass *playbasebin_klass;
391 gobject_klass = (GObjectClass *) klass;
392 gstelement_klass = (GstElementClass *) klass;
393 gstbin_klass = (GstBinClass *) klass;
394 playbasebin_klass = (GstPlayBaseBinClass *) klass;
396 parent_class = g_type_class_peek_parent (klass);
398 gobject_klass->set_property = gst_play_bin_set_property;
399 gobject_klass->get_property = gst_play_bin_get_property;
401 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
402 g_param_spec_object ("video-sink", "Video Sink",
403 "the video output element to use (NULL = default sink)",
404 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
405 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
406 g_param_spec_object ("audio-sink", "Audio Sink",
407 "the audio output element to use (NULL = default sink)",
408 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
409 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
410 g_param_spec_object ("vis-plugin", "Vis plugin",
411 "the visualization element to use (NULL = none)",
412 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
413 g_object_class_install_property (gobject_klass, ARG_VOLUME,
414 g_param_spec_double ("volume", "volume", "volume",
415 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
416 g_object_class_install_property (gobject_klass, ARG_FRAME,
417 gst_param_spec_mini_object ("frame", "Frame",
418 "The last frame (NULL = no video available)",
419 GST_TYPE_BUFFER, G_PARAM_READABLE));
420 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
421 g_param_spec_string ("subtitle-font-desc",
422 "Subtitle font description",
423 "Pango font description of font "
424 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
426 * GstPlayBin::connection-speed
428 * Network connection speed in kbps (0 = unknown)
432 g_object_class_install_property (gobject_klass, ARG_CONNECTION_SPEED,
433 g_param_spec_uint ("connection-speed", "Connection Speed",
434 "Network connection speed in kbps (0 = unknown)",
435 0, G_MAXUINT, CONNECTION_SPEED_DEFAULT, G_PARAM_READWRITE));
437 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
439 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
441 gstelement_klass->change_state =
442 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
443 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
444 gstelement_klass->set_clock = GST_DEBUG_FUNCPTR (gst_play_bin_set_clock_func);
446 gstbin_klass->handle_message =
447 GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
449 playbasebin_klass->setup_output_pads = setup_sinks;
453 gst_play_bin_init (GstPlayBin * play_bin)
455 play_bin->video_sink = NULL;
456 play_bin->audio_sink = NULL;
457 play_bin->visualisation = NULL;
458 play_bin->pending_visualisation = NULL;
459 play_bin->volume_element = NULL;
460 play_bin->textoverlay_element = NULL;
461 play_bin->volume = 1.0;
462 play_bin->sinks = NULL;
463 play_bin->frame = NULL;
464 play_bin->font_desc = NULL;
465 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
466 NULL, (GDestroyNotify) gst_object_unref);
470 gst_play_bin_dispose (GObject * object)
472 GstPlayBin *play_bin;
474 play_bin = GST_PLAY_BIN (object);
476 if (play_bin->cache != NULL) {
477 remove_sinks (play_bin);
478 g_hash_table_destroy (play_bin->cache);
479 play_bin->cache = NULL;
482 if (play_bin->audio_sink != NULL) {
483 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
484 gst_object_unref (play_bin->audio_sink);
485 play_bin->audio_sink = NULL;
487 if (play_bin->video_sink != NULL) {
488 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
489 gst_object_unref (play_bin->video_sink);
490 play_bin->video_sink = NULL;
492 if (play_bin->visualisation != NULL) {
493 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
494 gst_object_unref (play_bin->visualisation);
495 play_bin->visualisation = NULL;
497 if (play_bin->pending_visualisation != NULL) {
498 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
499 gst_object_unref (play_bin->pending_visualisation);
500 play_bin->pending_visualisation = NULL;
502 if (play_bin->textoverlay_element != NULL) {
503 gst_object_unref (play_bin->textoverlay_element);
504 play_bin->textoverlay_element = NULL;
506 g_free (play_bin->font_desc);
507 play_bin->font_desc = NULL;
509 G_OBJECT_CLASS (parent_class)->dispose (object);
513 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
520 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
523 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
524 GstBin *vis_bin = NULL;
525 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
528 /* We want to disable visualisation */
529 if (!GST_IS_ELEMENT (play_bin->pending_visualisation)) {
530 /* Set visualisation element to READY */
531 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
536 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
539 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
543 vis_src_pad = gst_element_get_pad (play_bin->visualisation, "src");
544 vis_sink_pad = gst_pad_get_peer (tee_pad);
546 /* Can be fakesink */
547 if (GST_IS_PAD (vis_src_pad)) {
548 vqueue_pad = gst_pad_get_peer (vis_src_pad);
551 if (!GST_IS_PAD (vis_sink_pad)) {
555 /* Check the bin's state */
556 GST_OBJECT_LOCK (vis_bin);
557 bin_state = GST_STATE (vis_bin);
558 GST_OBJECT_UNLOCK (vis_bin);
561 gst_pad_unlink (tee_pad, vis_sink_pad);
562 gst_object_unref (vis_sink_pad);
565 if (GST_IS_PAD (vqueue_pad)) {
566 gst_pad_unlink (vis_src_pad, vqueue_pad);
567 gst_object_unref (vis_src_pad);
571 /* Remove from vis_bin */
572 gst_bin_remove (vis_bin, play_bin->visualisation);
573 /* Set state to NULL */
574 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
575 /* And loose our ref */
576 gst_object_unref (play_bin->visualisation);
578 if (play_bin->pending_visualisation) {
579 /* Ref this new visualisation element before adding to the bin */
580 gst_object_ref (play_bin->pending_visualisation);
581 /* Add the new one */
582 gst_bin_add (vis_bin, play_bin->pending_visualisation);
583 /* Synchronizing state */
584 gst_element_set_state (play_bin->pending_visualisation, bin_state);
586 vis_sink_pad = gst_element_get_pad (play_bin->pending_visualisation,
588 vis_src_pad = gst_element_get_pad (play_bin->pending_visualisation, "src");
590 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
595 gst_pad_link (tee_pad, vis_sink_pad);
596 gst_pad_link (vis_src_pad, vqueue_pad);
600 gst_object_unref (play_bin->visualisation);
601 play_bin->visualisation = play_bin->pending_visualisation;
602 play_bin->pending_visualisation = NULL;
606 gst_object_unref (vis_sink_pad);
609 gst_object_unref (vis_src_pad);
612 gst_object_unref (vqueue_pad);
615 gst_object_unref (vis_bin);
618 /* Unblock the pad */
619 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
624 gst_play_bin_set_property (GObject * object, guint prop_id,
625 const GValue * value, GParamSpec * pspec)
627 GstPlayBin *play_bin;
629 play_bin = GST_PLAY_BIN (object);
633 if (play_bin->video_sink != NULL) {
634 gst_object_unref (play_bin->video_sink);
636 play_bin->video_sink = g_value_get_object (value);
637 if (play_bin->video_sink != NULL) {
638 gst_object_ref (play_bin->video_sink);
639 gst_object_sink (GST_OBJECT_CAST (play_bin->video_sink));
641 /* when changing the videosink, we just remove the
642 * video pipeline from the cache so that it will be
643 * regenerated with the new sink element */
644 g_hash_table_remove (play_bin->cache, "vbin");
647 if (play_bin->audio_sink != NULL) {
648 gst_object_unref (play_bin->audio_sink);
650 play_bin->audio_sink = g_value_get_object (value);
651 if (play_bin->audio_sink != NULL) {
652 gst_object_ref (play_bin->audio_sink);
653 gst_object_sink (GST_OBJECT_CAST (play_bin->audio_sink));
655 g_hash_table_remove (play_bin->cache, "abin");
659 /* Do we already have a visualisation change pending ? */
660 if (play_bin->pending_visualisation) {
661 gst_object_unref (play_bin->pending_visualisation);
662 play_bin->pending_visualisation = g_value_get_object (value);
664 if (play_bin->pending_visualisation) {
665 gst_object_ref (play_bin->pending_visualisation);
666 gst_object_sink (GST_OBJECT_CAST (play_bin->pending_visualisation));
669 play_bin->pending_visualisation = g_value_get_object (value);
672 if (play_bin->pending_visualisation) {
673 gst_object_ref (play_bin->pending_visualisation);
674 gst_object_sink (GST_OBJECT_CAST (play_bin->pending_visualisation));
677 /* Was there a visualisation already set ? */
678 if (play_bin->visualisation != NULL) {
679 GstBin *vis_bin = NULL;
682 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
685 /* Check if the visualisation is already in a bin */
686 if (GST_IS_BIN (vis_bin)) {
687 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
689 /* Now get tee pad and block it async */
690 vis_sink_pad = gst_element_get_pad (play_bin->visualisation,
692 if (!GST_IS_PAD (vis_sink_pad)) {
695 tee_pad = gst_pad_get_peer (vis_sink_pad);
696 if (!GST_IS_PAD (tee_pad)) {
700 /* Block with callback */
701 gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
705 gst_object_unref (vis_sink_pad);
708 gst_object_unref (tee_pad);
710 gst_object_unref (vis_bin);
712 play_bin->visualisation = play_bin->pending_visualisation;
713 play_bin->pending_visualisation = NULL;
716 play_bin->visualisation = play_bin->pending_visualisation;
717 play_bin->pending_visualisation = NULL;
723 play_bin->volume = g_value_get_double (value);
724 if (play_bin->volume_element) {
725 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
726 play_bin->volume, NULL);
730 g_free (play_bin->font_desc);
731 play_bin->font_desc = g_strdup (g_value_get_string (value));
732 if (play_bin->textoverlay_element) {
733 g_object_set (G_OBJECT (play_bin->textoverlay_element),
734 "font-desc", g_value_get_string (value), NULL);
737 case ARG_CONNECTION_SPEED:
738 play_bin->connection_speed = g_value_get_uint (value) * 1000;
741 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
747 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
750 GstPlayBin *play_bin;
752 play_bin = GST_PLAY_BIN (object);
756 g_value_set_object (value, play_bin->video_sink);
759 g_value_set_object (value, play_bin->audio_sink);
762 g_value_set_object (value, play_bin->visualisation);
765 g_value_set_double (value, play_bin->volume);
768 GstBuffer *cur_frame = NULL;
770 gst_buffer_replace (&cur_frame, play_bin->frame);
771 gst_value_take_buffer (value, cur_frame);
774 case ARG_CONNECTION_SPEED:
775 g_value_set_uint (value, play_bin->connection_speed / 1000);
778 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
783 /* signal fired when the identity has received a new buffer. This is used for
784 * making screenshots.
787 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
789 GstPlayBin *play_bin = GST_PLAY_BIN (data);
791 /* applications need to know the buffer caps,
792 * make sure they are always set on the frame */
793 if (GST_BUFFER_CAPS (frame) == NULL) {
796 if ((pad = gst_element_get_pad (identity, "sink"))) {
797 gst_buffer_set_caps (frame, GST_PAD_CAPS (pad));
798 gst_object_unref (pad);
802 gst_buffer_replace (&play_bin->frame, frame);
806 post_missing_element_message (GstPlayBin * playbin, const gchar * name)
810 msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playbin), name);
811 gst_element_post_message (GST_ELEMENT_CAST (playbin), msg);
814 /* make the element (bin) that contains the elements needed to perform
815 * video display. We connect a handoff signal to identity so that we
816 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
818 * +-------------------------------------------------------------+
820 * | +--------+ +----------+ +----------+ +---------+ |
821 * | |identity| |colorspace| |videoscale| |videosink| |
822 * | +-sink src-sink src-sink src-sink | |
823 * | | +---+----+ +----------+ +----------+ +---------+ |
825 * +----------|--------------------------------------------------+
829 gen_video_element (GstPlayBin * play_bin)
836 GstElement *identity;
839 /* first see if we have it in the cache */
840 element = g_hash_table_lookup (play_bin->cache, "vbin");
841 if (element != NULL) {
845 if (play_bin->video_sink) {
846 sink = play_bin->video_sink;
848 sink = gst_element_factory_make ("autovideosink", "videosink");
850 sink = gst_element_factory_make ("xvimagesink", "videosink");
855 gst_object_ref (sink);
856 g_hash_table_insert (play_bin->cache, "video_sink", sink);
858 /* create a bin to hold objects, as we create them we add them to this bin so
859 * that when something goes wrong we only need to unref the bin */
860 element = gst_bin_new ("vbin");
861 gst_bin_add (GST_BIN_CAST (element), sink);
863 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
866 gst_bin_add (GST_BIN_CAST (element), conv);
868 scale = gst_element_factory_make ("videoscale", "vscale");
871 gst_bin_add (GST_BIN_CAST (element), scale);
873 identity = gst_element_factory_make ("identity", "id");
874 g_object_set (identity, "silent", TRUE, NULL);
875 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
876 gst_bin_add (GST_BIN_CAST (element), identity);
878 gst_element_link_pads (identity, "src", conv, "sink");
879 gst_element_link_pads (conv, "src", scale, "sink");
880 /* be more careful with the pad from the custom sink element, it might not
882 if (!gst_element_link_pads (scale, "src", sink, NULL))
885 pad = gst_element_get_pad (identity, "sink");
886 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
887 gst_object_unref (pad);
889 gst_element_set_state (element, GST_STATE_READY);
891 /* since we're gonna add it to a bin but don't want to lose it,
892 * we keep a reference. */
893 gst_object_ref (element);
894 g_hash_table_insert (play_bin->cache, "vbin", element);
901 post_missing_element_message (play_bin, "autovideosink");
902 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
903 (_("Both autovideosink and xvimagesink elements are missing.")),
909 post_missing_element_message (play_bin, "ffmpegcolorspace");
910 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
911 (_("Missing element '%s' - check your GStreamer installation."),
912 "ffmpegcolorspace"), (NULL));
913 gst_object_unref (element);
919 post_missing_element_message (play_bin, "videoscale");
920 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
921 (_("Missing element '%s' - check your GStreamer installation."),
922 "videoscale"), ("possibly a liboil version mismatch?"));
923 gst_object_unref (element);
928 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
929 (NULL), ("Failed to configure the video sink."));
930 gst_object_unref (element);
935 /* make an element for playback of video with subtitles embedded.
937 * +--------------------------------------------------+
938 * | tbin +-------------+ |
939 * | +-----+ | textoverlay | +------+ |
940 * | | csp | +--video_sink | | vbin | |
941 * video_sink-sink src+ +-text_sink src-sink | |
942 * | +-----+ | +-------------+ +------+ |
943 * text_sink-------------+ |
944 * +--------------------------------------------------+
946 * If there is no subtitle renderer this function will simply return the
947 * videosink without the text_sink pad.
950 gen_text_element (GstPlayBin * play_bin)
952 GstElement *element, *csp, *overlay, *vbin;
955 /* Create the video rendering bin, error is posted when this fails. */
956 vbin = gen_video_element (play_bin);
961 overlay = gst_element_factory_make ("textoverlay", "overlay");
963 /* If no overlay return the video bin without subtitle support. */
968 element = gst_bin_new ("textbin");
970 /* Set some parameters */
971 g_object_set (G_OBJECT (overlay),
972 "halign", "center", "valign", "bottom", NULL);
973 if (play_bin->font_desc) {
974 g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
978 play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
980 /* we know this will succeed, as the video bin already created one before */
981 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
983 /* Add our elements */
984 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
987 gst_element_link_pads (csp, "src", overlay, "video_sink");
988 gst_element_link_pads (overlay, "src", vbin, "sink");
990 /* Add ghost pads on the subtitle bin */
991 pad = gst_element_get_pad (overlay, "text_sink");
992 gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
993 gst_object_unref (pad);
995 pad = gst_element_get_pad (csp, "sink");
996 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
997 gst_object_unref (pad);
999 /* Set state to READY */
1000 gst_element_set_state (element, GST_STATE_READY);
1007 post_missing_element_message (play_bin, "textoverlay");
1008 GST_WARNING_OBJECT (play_bin,
1009 "No overlay (pango) element, subtitles disabled");
1014 /* make the element (bin) that contains the elements needed to perform
1017 * +-------------------------------------------------------------+
1019 * | +---------+ +----------+ +---------+ +---------+ |
1020 * | |audioconv| |audioscale| | volume | |audiosink| |
1021 * | +-sink src-sink src-sink src-sink | |
1022 * | | +---------+ +----------+ +---------+ +---------+ |
1024 * +-------------------------------------------------------------+
1027 gen_audio_element (GstPlayBin * play_bin)
1030 GstElement *element;
1037 element = g_hash_table_lookup (play_bin->cache, "abin");
1038 if (element != NULL)
1041 if (play_bin->audio_sink) {
1042 sink = play_bin->audio_sink;
1044 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
1046 sink = gst_element_factory_make ("alsasink", "audiosink");
1051 play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
1054 gst_object_ref (sink);
1055 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
1057 element = gst_bin_new ("abin");
1058 gst_bin_add (GST_BIN_CAST (element), sink);
1060 conv = gst_element_factory_make ("audioconvert", "aconv");
1062 goto no_audioconvert;
1063 gst_bin_add (GST_BIN_CAST (element), conv);
1065 scale = gst_element_factory_make ("audioresample", "aresample");
1067 goto no_audioresample;
1068 gst_bin_add (GST_BIN_CAST (element), scale);
1070 volume = gst_element_factory_make ("volume", "volume");
1071 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
1072 play_bin->volume_element = volume;
1073 gst_bin_add (GST_BIN_CAST (element), volume);
1075 res = gst_element_link_pads (conv, "src", scale, "sink");
1076 res &= gst_element_link_pads (scale, "src", volume, "sink");
1077 res &= gst_element_link_pads (volume, "src", sink, NULL);
1081 pad = gst_element_get_pad (conv, "sink");
1082 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1083 gst_object_unref (pad);
1085 gst_element_set_state (element, GST_STATE_READY);
1087 /* since we're gonna add it to a bin but don't want to lose it,
1088 * we keep a reference. */
1089 gst_object_ref (element);
1090 g_hash_table_insert (play_bin->cache, "abin", element);
1097 post_missing_element_message (play_bin, "autoaudiosink");
1098 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1099 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
1104 post_missing_element_message (play_bin, "audioconvert");
1105 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1106 (_("Missing element '%s' - check your GStreamer installation."),
1107 "audioconvert"), ("possibly a liboil version mismatch?"));
1108 gst_object_unref (element);
1114 post_missing_element_message (play_bin, "audioresample");
1115 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1116 (_("Missing element '%s' - check your GStreamer installation."),
1117 "audioresample"), ("possibly a liboil version mismatch?"));
1118 gst_object_unref (element);
1123 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1124 (NULL), ("Failed to configure the audio sink."));
1125 gst_object_unref (element);
1130 /* make the element (bin) that contains the elements needed to perform
1131 * visualisation ouput. The idea is to split the audio using tee, then
1132 * sending the output to the regular audio bin and the other output to
1133 * the vis plugin that transforms it into a video that is rendered with the
1134 * normal video bin. The video bin is run in a thread to make sure it does
1135 * not block the audio playback pipeline.
1137 * +-----------------------------------------------------------------------+
1139 * | +------+ +--------+ +----------------+ |
1140 * | | tee | | aqueue | | abin ... | |
1141 * | +-sink src-sink src-sink | |
1142 * | | | | +--------+ +----------------+ |
1144 * | | | | +------+ +------------+ +------+ +-----------+ |
1145 * | | | | |vqueue| | audioconv | | vis | | vbin ... | |
1146 * | | | src-sink src-sink + samp src-sink src-sink | |
1147 * | | | | +------+ +------------+ +------+ +-----------+ |
1151 +------------------------------------------------------------------------+
1154 gen_vis_element (GstPlayBin * play_bin)
1157 GstElement *element;
1165 GstElement *vqueue, *aqueue;
1168 /* errors are already posted when these fail. */
1169 asink = gen_audio_element (play_bin);
1172 vsink = gen_video_element (play_bin);
1174 gst_object_unref (asink);
1178 element = gst_bin_new ("visbin");
1179 tee = gst_element_factory_make ("tee", "tee");
1181 vqueue = gst_element_factory_make ("queue", "vqueue");
1182 aqueue = gst_element_factory_make ("queue", "aqueue");
1184 gst_bin_add (GST_BIN_CAST (element), asink);
1185 gst_bin_add (GST_BIN_CAST (element), vqueue);
1186 gst_bin_add (GST_BIN_CAST (element), aqueue);
1187 gst_bin_add (GST_BIN_CAST (element), vsink);
1188 gst_bin_add (GST_BIN_CAST (element), tee);
1190 conv = gst_element_factory_make ("audioconvert", "aconv");
1192 goto no_audioconvert;
1193 gst_bin_add (GST_BIN_CAST (element), conv);
1195 resamp = gst_element_factory_make ("audioresample", "aresamp");
1197 goto no_audioresample;
1198 gst_bin_add (GST_BIN_CAST (element), resamp);
1200 conv2 = gst_element_factory_make ("audioconvert", "aconv2");
1202 goto no_audioconvert;
1203 gst_bin_add (GST_BIN_CAST (element), conv2);
1205 if (play_bin->visualisation) {
1206 gst_object_ref (play_bin->visualisation);
1207 vis = play_bin->visualisation;
1209 vis = gst_element_factory_make ("goom", "vis");
1213 gst_bin_add (GST_BIN_CAST (element), vis);
1215 res = gst_element_link_pads (vqueue, "src", conv, "sink");
1216 res &= gst_element_link_pads (conv, "src", resamp, "sink");
1217 res &= gst_element_link_pads (resamp, "src", conv2, "sink");
1218 res &= gst_element_link_pads (conv2, "src", vis, "sink");
1219 res &= gst_element_link_pads (vis, "src", vsink, "sink");
1223 pad = gst_element_get_pad (aqueue, "sink");
1224 rpad = gst_element_get_request_pad (tee, "src%d");
1225 gst_pad_link (rpad, pad);
1226 gst_object_unref (rpad);
1227 gst_object_unref (pad);
1228 gst_element_link_pads (aqueue, "src", asink, "sink");
1230 pad = gst_element_get_pad (vqueue, "sink");
1231 rpad = gst_element_get_request_pad (tee, "src%d");
1232 gst_pad_link (rpad, pad);
1233 gst_object_unref (rpad);
1234 gst_object_unref (pad);
1236 pad = gst_element_get_pad (tee, "sink");
1237 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1238 gst_object_unref (pad);
1245 post_missing_element_message (play_bin, "audioconvert");
1246 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1247 (_("Missing element '%s' - check your GStreamer installation."),
1248 "audioconvert"), ("possibly a liboil version mismatch?"));
1249 gst_object_unref (element);
1254 post_missing_element_message (play_bin, "audioresample");
1255 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1256 (_("Missing element '%s' - check your GStreamer installation."),
1257 "audioresample"), (NULL));
1258 gst_object_unref (element);
1263 post_missing_element_message (play_bin, "goom");
1264 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1265 (_("Missing element '%s' - check your GStreamer installation."),
1267 gst_object_unref (element);
1272 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1273 (NULL), ("Failed to configure the visualisation element."));
1274 gst_object_unref (element);
1279 /* get rid of all installed sinks */
1281 remove_sinks (GstPlayBin * play_bin)
1285 GstElement *element;
1288 if (play_bin->cache == NULL)
1291 GST_DEBUG ("removesinks");
1292 element = g_hash_table_lookup (play_bin->cache, "abin");
1293 if (element != NULL) {
1294 parent = gst_element_get_parent (element);
1295 if (parent != NULL) {
1296 /* we remove the element from the parent so that
1297 * there is no unwanted state change when the parent
1299 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1300 gst_element_set_state (element, GST_STATE_NULL);
1301 gst_bin_remove (GST_BIN_CAST (parent), element);
1302 gst_object_unref (parent);
1304 pad = gst_element_get_pad (element, "sink");
1306 peer = gst_pad_get_peer (pad);
1308 gst_pad_unlink (peer, pad);
1309 gst_object_unref (peer);
1311 gst_object_unref (pad);
1314 element = g_hash_table_lookup (play_bin->cache, "vbin");
1315 if (element != NULL) {
1316 parent = gst_element_get_parent (element);
1317 if (parent != NULL) {
1318 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1319 gst_element_set_state (element, GST_STATE_NULL);
1320 gst_bin_remove (GST_BIN_CAST (parent), element);
1321 gst_object_unref (parent);
1323 pad = gst_element_get_pad (element, "sink");
1325 peer = gst_pad_get_peer (pad);
1327 gst_pad_unlink (peer, pad);
1328 gst_object_unref (peer);
1330 gst_object_unref (pad);
1334 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
1335 GstElement *element = GST_ELEMENT_CAST (sinks->data);
1339 pad = gst_element_get_pad (element, "sink");
1341 GST_LOG ("removing sink %p", element);
1343 peer = gst_pad_get_peer (pad);
1345 gst_pad_unlink (peer, pad);
1346 gst_object_unref (peer);
1348 gst_object_unref (pad);
1350 gst_element_set_state (element, GST_STATE_NULL);
1351 gst_bin_remove (GST_BIN_CAST (play_bin), element);
1353 g_list_free (play_bin->sinks);
1354 play_bin->sinks = NULL;
1356 if (play_bin->visualisation) {
1357 GstElement *vis_bin;
1360 GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
1362 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
1365 gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
1366 gst_object_unref (vis_bin);
1370 if (play_bin->frame) {
1371 gst_buffer_unref (play_bin->frame);
1372 play_bin->frame = NULL;
1375 if (play_bin->textoverlay_element) {
1376 gst_object_unref (play_bin->textoverlay_element);
1377 play_bin->textoverlay_element = NULL;
1381 /* loop over the streams and set up the pipeline to play this
1382 * media file. First we count the number of audio and video streams.
1383 * If there is no video stream but there exists an audio stream,
1384 * we install a visualisation pipeline.
1386 * Also make sure to only connect the first audio and video pad. FIXME
1387 * this should eventually be handled with a tuner interface so that
1388 * one can switch the streams.
1390 * This function takes ownership of @sink.*
1393 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
1394 GstPad * subtitle_pad)
1397 GstPadLinkReturn linkres;
1399 GstStateChangeReturn stateret;
1402 g_return_val_if_fail (sink != NULL, FALSE);
1404 /* For live pipelines we need to add the bin in the same state as the
1405 * parent so that it starts as soon as it is prerolled. */
1406 if (play_bin->is_live)
1407 state = GST_STATE_PLAYING;
1409 state = GST_STATE_PAUSED;
1411 /* this is only for debugging */
1412 parent = gst_pad_get_parent_element (srcpad);
1414 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
1415 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
1416 gst_object_unref (parent);
1418 gst_bin_add (GST_BIN_CAST (play_bin), sink);
1420 /* for live pipelines, disable the sync in the sinks until core handles this
1422 if (play_bin->is_live)
1423 gst_element_set_clock (sink, NULL);
1425 /* bring it to the PAUSED state so we can link to the peer without
1426 * breaking the flow */
1427 stateret = gst_element_set_state (sink, state);
1428 if (stateret == GST_STATE_CHANGE_FAILURE)
1431 /* we found a sink for this stream, now try to install it */
1432 sinkpad = gst_element_get_pad (sink, "sink");
1433 linkres = gst_pad_link (srcpad, sinkpad);
1434 gst_object_unref (sinkpad);
1436 /* try to link the pad of the sink to the stream */
1437 if (GST_PAD_LINK_FAILED (linkres))
1440 if (GST_IS_PAD (subtitle_pad)) {
1441 sinkpad = gst_element_get_pad (sink, "text_sink");
1442 linkres = gst_pad_link (subtitle_pad, sinkpad);
1443 gst_object_unref (sinkpad);
1446 /* try to link the subtitle pad of the sink to the stream, this is not
1448 if (GST_PAD_LINK_FAILED (linkres))
1449 goto subtitle_failed;
1452 /* we got the sink succesfully linked, now keep the sink
1453 * in our internal list */
1454 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
1461 gst_element_set_state (sink, GST_STATE_NULL);
1462 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1463 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1471 /* could not link this stream */
1472 caps = gst_pad_get_caps (srcpad);
1473 capsstr = gst_caps_to_string (caps);
1474 g_warning ("could not link %s: %d", capsstr, linkres);
1475 GST_DEBUG_OBJECT (play_bin,
1476 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1478 gst_caps_unref (caps);
1480 gst_element_set_state (sink, GST_STATE_NULL);
1481 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1489 /* could not link this stream */
1490 caps = gst_pad_get_caps (subtitle_pad);
1491 capsstr = gst_caps_to_string (caps);
1492 GST_DEBUG_OBJECT (play_bin,
1493 "subtitle link failed when adding sink, caps %s, reason %d", capsstr,
1496 gst_caps_unref (caps);
1504 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1506 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1507 GList *streaminfo = NULL, *s;
1508 gboolean need_vis = FALSE;
1509 gboolean need_text = FALSE;
1510 GstPad *textsrcpad = NULL, *pad = NULL;
1512 gboolean res = TRUE;
1514 /* get rid of existing sinks */
1515 if (play_bin->sinks) {
1516 remove_sinks (play_bin);
1518 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1520 /* find out what to do */
1521 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
1522 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1524 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
1525 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1526 play_bin->visualisation != NULL) {
1530 /* now actually connect everything */
1531 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
1532 for (s = streaminfo; s; s = g_list_next (s)) {
1533 GObject *obj = G_OBJECT (s->data);
1537 g_object_get (obj, "type", &type, NULL);
1538 g_object_get (obj, "object", &object, NULL);
1542 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1544 sink = gen_vis_element (play_bin);
1546 sink = gen_audio_element (play_bin);
1551 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
1553 res = add_sink (play_bin, sink, pad, NULL);
1554 gst_object_unref (pad);
1558 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
1560 GstObject *parent = NULL, *grandparent = NULL;
1561 GstPad *ghost = NULL;
1563 sink = gen_text_element (play_bin);
1565 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
1567 /* This pad is from subtitle-bin, we need to create a ghost pad to have
1568 common grandparents */
1569 parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
1571 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
1572 gst_object_unref (textsrcpad);
1577 grandparent = gst_object_get_parent (parent);
1579 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
1580 gst_object_unref (parent);
1581 gst_object_unref (textsrcpad);
1586 /* We ghost the pad on subtitle_bin only, if the text pad is from the
1587 media demuxer we keep it as it is */
1588 if (!GST_IS_PLAY_BIN (grandparent)) {
1589 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
1590 "file, ghosting to a suitable hierarchy");
1591 ghost = gst_ghost_pad_new ("text_src", textsrcpad);
1592 if (!GST_IS_PAD (ghost)) {
1593 GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
1595 gst_object_unref (parent);
1596 gst_object_unref (grandparent);
1597 gst_object_unref (textsrcpad);
1602 gst_pad_set_active (ghost, TRUE);
1603 if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
1604 gst_object_unref (textsrcpad);
1605 textsrcpad = gst_object_ref (ghost);
1607 GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
1608 gst_pad_set_active (ghost, FALSE);
1609 gst_object_unref (ghost);
1610 gst_object_unref (textsrcpad);
1614 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
1615 "no changes to hierarchy needed");
1618 gst_object_unref (parent);
1619 gst_object_unref (grandparent);
1621 sink = gen_video_element (play_bin);
1626 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
1628 res = add_sink (play_bin, sink, pad, textsrcpad);
1629 gst_object_unref (pad);
1631 gst_object_unref (textsrcpad);
1634 /* remove the sinks now, pipeline get_state will now wait for the
1635 * sinks to preroll */
1636 if (play_bin->fakesink) {
1637 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1638 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1639 play_bin->fakesink = NULL;
1645 /* Send an event to our sinks until one of them works; don't then send to the
1646 * remaining sinks (unlike GstBin)
1649 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1651 GList *sinks = play_bin->sinks;
1652 gboolean res = TRUE;
1655 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1657 gst_event_ref (event);
1658 if ((res = gst_element_send_event (sink, event))) {
1659 GST_DEBUG_OBJECT (play_bin,
1660 "Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
1663 GST_DEBUG_OBJECT (play_bin,
1664 "Event failed when sent to sink %" GST_PTR_FORMAT, sink);
1666 sinks = g_list_next (sinks);
1669 gst_event_unref (event);
1675 do_playbin_seek (GstElement * element, GstEvent * event)
1680 gboolean was_playing = FALSE;
1683 gst_event_parse_seek (event, &rate, NULL, &flags, NULL, NULL, NULL, NULL);
1685 flush = flags & GST_SEEK_FLAG_FLUSH;
1690 /* need to call _get_state() since a bin state is only updated
1691 * with this call. */
1692 gst_element_get_state (element, &state, NULL, 0);
1693 was_playing = state == GST_STATE_PLAYING;
1696 gst_element_set_state (element, GST_STATE_PAUSED);
1697 gst_element_get_state (element, NULL, NULL, 50 * GST_MSECOND);
1701 GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
1702 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1705 /* need to reset the stream time to 0 after a flushing seek */
1707 gst_pipeline_set_new_stream_time (GST_PIPELINE (element), 0);
1710 /* and continue playing */
1711 gst_element_set_state (element, GST_STATE_PLAYING);
1716 /* We only want to send the event to a single sink (overriding GstBin's
1717 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1718 * events appropriately. So, this is a messy duplication of code. */
1720 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1722 gboolean res = FALSE;
1723 GstEventType event_type = GST_EVENT_TYPE (event);
1726 switch (event_type) {
1727 case GST_EVENT_SEEK:
1728 res = do_playbin_seek (element, event);
1731 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1738 /* Override the set_clock function, we don't want to set a clock on the sinks
1739 * when we are live pipeline so that they don't synchronize until this is
1742 gst_play_bin_set_clock_func (GstElement * element, GstClock * clock)
1746 GstPlayBin *play_bin;
1747 gboolean res = TRUE;
1748 GstElement *asink, *vsink;
1750 bin = GST_BIN (element);
1751 play_bin = GST_PLAY_BIN (element);
1753 asink = g_hash_table_lookup (play_bin->cache, "audio_sink");
1754 vsink = g_hash_table_lookup (play_bin->cache, "video_sink");
1756 GST_DEBUG_OBJECT (play_bin, "setting clock, is_live %d", play_bin->is_live);
1758 GST_OBJECT_LOCK (bin);
1759 if (element->clock != clock) {
1760 for (children = bin->children; children; children = g_list_next (children)) {
1761 GstElement *child = GST_ELEMENT (children->data);
1763 if (play_bin->is_live && (child == asink || child == vsink))
1764 res &= gst_element_set_clock (child, NULL);
1766 res &= gst_element_set_clock (child, clock);
1769 GST_OBJECT_UNLOCK (bin);
1775 value_list_append_structure_list (GValue * list_val, GstStructure ** first,
1776 GList * structure_list)
1780 for (l = structure_list; l != NULL; l = l->next) {
1781 GValue val = { 0, };
1784 *first = gst_structure_copy ((GstStructure *) l->data);
1786 g_value_init (&val, GST_TYPE_STRUCTURE);
1787 g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
1788 gst_value_list_append_value (list_val, &val);
1789 g_value_unset (&val);
1793 /* if it's a redirect message with multiple redirect locations we might
1794 * want to pick a different 'best' location depending on the required
1795 * bitrates and the connection speed */
1797 gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
1799 const GValue *locations_list, *location_val;
1800 GstMessage *new_msg;
1801 GstStructure *new_structure = NULL;
1802 GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
1803 GValue new_list = { 0, };
1806 GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
1807 GST_DEBUG_OBJECT (playbin, "connection speed: %u", playbin->connection_speed);
1809 if (playbin->connection_speed == 0 || msg->structure == NULL)
1812 locations_list = gst_structure_get_value (msg->structure, "locations");
1813 if (locations_list == NULL)
1816 size = gst_value_list_get_size (locations_list);
1820 /* maintain existing order as much as possible, just sort references
1821 * with too high a bitrate to the end (the assumption being that if
1822 * bitrates are given they are given for all interesting streams and
1823 * that the you-need-at-least-version-xyz redirect has the same bitrate
1824 * as the lowest referenced redirect alternative) */
1825 for (i = 0; i < size; ++i) {
1826 const GstStructure *s;
1829 location_val = gst_value_list_get_value (locations_list, i);
1830 s = (const GstStructure *) g_value_get_boxed (location_val);
1831 if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
1832 GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
1833 l_neutral = g_list_append (l_neutral, (gpointer) s);
1834 } else if (bitrate > playbin->connection_speed) {
1835 GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
1836 l_bad = g_list_append (l_bad, (gpointer) s);
1837 } else if (bitrate <= playbin->connection_speed) {
1838 GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
1839 l_good = g_list_append (l_good, (gpointer) s);
1843 g_value_init (&new_list, GST_TYPE_LIST);
1844 value_list_append_structure_list (&new_list, &new_structure, l_good);
1845 value_list_append_structure_list (&new_list, &new_structure, l_neutral);
1846 value_list_append_structure_list (&new_list, &new_structure, l_bad);
1847 gst_structure_set_value (new_structure, "locations", &new_list);
1848 g_value_unset (&new_list);
1850 g_list_free (l_good);
1851 g_list_free (l_neutral);
1852 g_list_free (l_bad);
1854 new_msg = gst_message_new_element (msg->src, new_structure);
1855 gst_message_unref (msg);
1857 GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
1862 gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
1864 if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
1865 && gst_structure_has_name (msg->structure, "redirect")) {
1866 msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
1869 GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
1872 static GstStateChangeReturn
1873 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1875 GstStateChangeReturn ret;
1876 GstPlayBin *play_bin;
1878 play_bin = GST_PLAY_BIN (element);
1881 switch (transition) {
1882 case GST_STATE_CHANGE_READY_TO_PAUSED:
1883 /* this really is the easiest way to make the state change return
1884 * ASYNC until we added the sinks */
1885 if (!play_bin->fakesink) {
1886 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1887 gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
1894 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1895 if (ret == GST_STATE_CHANGE_FAILURE)
1898 switch (transition) {
1899 case GST_STATE_CHANGE_READY_TO_PAUSED:
1900 /* remember us being a live pipeline */
1901 play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
1902 GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
1904 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1905 /* FIXME Release audio device when we implement that */
1907 case GST_STATE_CHANGE_PAUSED_TO_READY:
1908 /* remove sinks we added */
1909 remove_sinks (play_bin);
1910 /* and there might be a fakesink we need to clean up now */
1911 if (play_bin->fakesink) {
1912 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1913 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1914 play_bin->fakesink = NULL;
1925 plugin_init (GstPlugin * plugin)
1927 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1929 gst_base_utils_init ();
1932 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
1934 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
1935 #endif /* ENABLE_NLS */
1937 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
1941 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1944 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,