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 status</title>
166 * Playbin handles buffering automatically. When playbin is buffering, it
167 * will post BUFFERING messages on the bus with a percentage value that
168 * shows the progress of the buffering. Applications may want to show this
169 * information to the user in some form or another. Here is how to extract
170 * the percentage information from the message:
174 * switch (GST_MESSAGE_TYPE (msg)) {
175 * case GST_MESSAGE_BUFFERING: {
177 * gst_structure_get_int (msg->structure, "buffer-percent", &percent);
178 * g_print ("Buffering (%%u percent done)", percent);
184 * Note that application should keep the pipeline in the PAUSED state when a
185 * GST_MESSAGE_BUFFERING message is received with a buffer-percent < 100.
187 * <title>Embedding the video window in your application</title>
189 * By default, playbin (or rather the video sinks used) will create their own
190 * window. Applications will usually want to force output to a window of their
191 * own, however. This can be done using the GstXOverlay interface, which most
192 * video sinks implement. See the documentation there for more details.
194 * <title>Specifying which CD/DVD device to use</title>
196 * The device to use for CDs/DVDs needs to be set on the source element
197 * playbin creates before it is opened. The only way to do this at the moment
198 * is to connect to playbin's "notify::source" signal, which will be emitted
199 * by playbin when it has created the source element for a particular URI.
200 * In the signal callback you can check if the source element has a "device"
201 * property and set it appropriately. In future ways might be added to specify
202 * the device as part of the URI, but at the time of writing this is not
205 * <title>Examples</title>
207 * Here is a simple pipeline to play back a video or audio file:
209 * gst-launch -v playbin uri=file:///path/to/somefile.avi
211 * This will play back the given AVI video file, given that the video and
212 * audio decoders required to decode the content are installed. Since no
213 * special audio sink or video sink is supplied (not possible via gst-launch),
214 * playbin will try to find a suitable audio and video sink automatically
215 * using the autoaudiosink and autovideosink elements.
218 * Here is a another pipeline to play track 4 of an audio CD:
220 * gst-launch -v playbin uri=cdda://4
222 * This will play back track 4 on an audio CD in your disc drive (assuming
223 * the drive is detected automatically by the plugin).
226 * Here is a another pipeline to play title 1 of a DVD:
228 * gst-launch -v playbin uri=dvd://1
230 * This will play back title 1 of a DVD in your disc drive (assuming
231 * the drive is detected automatically by the plugin).
243 #include <gst/gst-i18n-plugin.h>
245 #include "gstplaybasebin.h"
247 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
248 #define GST_CAT_DEFAULT gst_play_bin_debug
250 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
251 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
252 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
253 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
254 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
256 #define VOLUME_MAX_DOUBLE 10.0
257 #define CONNECTION_SPEED_DEFAULT 0
259 typedef struct _GstPlayBin GstPlayBin;
260 typedef struct _GstPlayBinClass GstPlayBinClass;
264 GstPlayBaseBin parent;
266 /* the configurable elements */
267 GstElement *fakesink;
268 GstElement *audio_sink;
269 GstElement *video_sink;
270 GstElement *visualisation;
271 GstElement *pending_visualisation;
272 GstElement *volume_element;
273 GstElement *textoverlay_element;
276 /* these are the currently active sinks */
279 /* the last captured frame for snapshots */
282 /* our cache for the sinks */
285 /* font description */
288 /* connection speed in bits/sec (0 = unknown) */
289 guint connection_speed;
291 /* indication if the pipeline is live */
295 struct _GstPlayBinClass
297 GstPlayBaseBinClass parent_class;
319 static void gst_play_bin_class_init (GstPlayBinClass * klass);
320 static void gst_play_bin_init (GstPlayBin * play_bin);
321 static void gst_play_bin_dispose (GObject * object);
323 static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
324 GstPlayBaseGroup * group);
325 static void remove_sinks (GstPlayBin * play_bin);
327 static void gst_play_bin_set_property (GObject * object, guint prop_id,
328 const GValue * value, GParamSpec * spec);
329 static void gst_play_bin_get_property (GObject * object, guint prop_id,
330 GValue * value, GParamSpec * spec);
332 static gboolean gst_play_bin_send_event (GstElement * element,
334 static gboolean gst_play_bin_set_clock_func (GstElement * element,
336 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
337 GstStateChange transition);
339 static void gst_play_bin_handle_message (GstBin * bin, GstMessage * message);
341 static GstElementClass *parent_class;
343 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
345 static const GstElementDetails gst_play_bin_details =
346 GST_ELEMENT_DETAILS ("Player Bin",
347 "Generic/Bin/Player",
348 "Autoplug and play media from an uri",
349 "Wim Taymans <wim@fluendo.com>");
352 gst_play_bin_get_type (void)
354 static GType gst_play_bin_type = 0;
356 if (!gst_play_bin_type) {
357 static const GTypeInfo gst_play_bin_info = {
358 sizeof (GstPlayBinClass),
361 (GClassInitFunc) gst_play_bin_class_init,
366 (GInstanceInitFunc) gst_play_bin_init,
370 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
371 "GstPlayBin", &gst_play_bin_info, 0);
374 return gst_play_bin_type;
378 gst_play_bin_class_init (GstPlayBinClass * klass)
380 GObjectClass *gobject_klass;
381 GstElementClass *gstelement_klass;
382 GstBinClass *gstbin_klass;
383 GstPlayBaseBinClass *playbasebin_klass;
385 gobject_klass = (GObjectClass *) klass;
386 gstelement_klass = (GstElementClass *) klass;
387 gstbin_klass = (GstBinClass *) klass;
388 playbasebin_klass = (GstPlayBaseBinClass *) klass;
390 parent_class = g_type_class_peek_parent (klass);
392 gobject_klass->set_property = gst_play_bin_set_property;
393 gobject_klass->get_property = gst_play_bin_get_property;
395 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
396 g_param_spec_object ("video-sink", "Video Sink",
397 "the video output element to use (NULL = default sink)",
398 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
399 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
400 g_param_spec_object ("audio-sink", "Audio Sink",
401 "the audio output element to use (NULL = default sink)",
402 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
403 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
404 g_param_spec_object ("vis-plugin", "Vis plugin",
405 "the visualization element to use (NULL = none)",
406 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
407 g_object_class_install_property (gobject_klass, ARG_VOLUME,
408 g_param_spec_double ("volume", "volume", "volume",
409 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
410 g_object_class_install_property (gobject_klass, ARG_FRAME,
411 gst_param_spec_mini_object ("frame", "Frame",
412 "The last frame (NULL = no video available)",
413 GST_TYPE_BUFFER, G_PARAM_READABLE));
414 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
415 g_param_spec_string ("subtitle-font-desc",
416 "Subtitle font description",
417 "Pango font description of font "
418 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
420 * GstPlayBin::connection-speed
422 * Network connection speed in kbps (0 = unknown)
426 g_object_class_install_property (gobject_klass, ARG_CONNECTION_SPEED,
427 g_param_spec_uint ("connection-speed", "Connection Speed",
428 "Network connection speed in kbps (0 = unknown)",
429 0, G_MAXUINT, CONNECTION_SPEED_DEFAULT, G_PARAM_READWRITE));
431 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
433 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
435 gstelement_klass->change_state =
436 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
437 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
438 gstelement_klass->set_clock = GST_DEBUG_FUNCPTR (gst_play_bin_set_clock_func);
440 gstbin_klass->handle_message =
441 GST_DEBUG_FUNCPTR (gst_play_bin_handle_message);
443 playbasebin_klass->setup_output_pads = setup_sinks;
447 gst_play_bin_init (GstPlayBin * play_bin)
449 play_bin->video_sink = NULL;
450 play_bin->audio_sink = NULL;
451 play_bin->visualisation = NULL;
452 play_bin->pending_visualisation = NULL;
453 play_bin->volume_element = NULL;
454 play_bin->textoverlay_element = NULL;
455 play_bin->volume = 1.0;
456 play_bin->sinks = NULL;
457 play_bin->frame = NULL;
458 play_bin->font_desc = NULL;
459 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
460 NULL, (GDestroyNotify) gst_object_unref);
464 gst_play_bin_dispose (GObject * object)
466 GstPlayBin *play_bin;
468 play_bin = GST_PLAY_BIN (object);
470 if (play_bin->cache != NULL) {
471 remove_sinks (play_bin);
472 g_hash_table_destroy (play_bin->cache);
473 play_bin->cache = NULL;
476 if (play_bin->audio_sink != NULL) {
477 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
478 gst_object_unref (play_bin->audio_sink);
479 play_bin->audio_sink = NULL;
481 if (play_bin->video_sink != NULL) {
482 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
483 gst_object_unref (play_bin->video_sink);
484 play_bin->video_sink = NULL;
486 if (play_bin->visualisation != NULL) {
487 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
488 gst_object_unref (play_bin->visualisation);
489 play_bin->visualisation = NULL;
491 if (play_bin->pending_visualisation != NULL) {
492 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
493 gst_object_unref (play_bin->pending_visualisation);
494 play_bin->pending_visualisation = NULL;
496 if (play_bin->textoverlay_element != NULL) {
497 gst_object_unref (play_bin->textoverlay_element);
498 play_bin->textoverlay_element = NULL;
500 g_free (play_bin->font_desc);
501 play_bin->font_desc = NULL;
503 G_OBJECT_CLASS (parent_class)->dispose (object);
507 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
514 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
517 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
518 GstBin *vis_bin = NULL;
519 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
522 /* We want to disable visualisation */
523 if (!GST_IS_ELEMENT (play_bin->pending_visualisation)) {
524 /* Set visualisation element to READY */
525 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
530 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
533 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
537 vis_src_pad = gst_element_get_pad (play_bin->visualisation, "src");
538 vis_sink_pad = gst_pad_get_peer (tee_pad);
540 /* Can be fakesink */
541 if (GST_IS_PAD (vis_src_pad)) {
542 vqueue_pad = gst_pad_get_peer (vis_src_pad);
545 if (!GST_IS_PAD (vis_sink_pad)) {
549 /* Check the bin's state */
550 GST_OBJECT_LOCK (vis_bin);
551 bin_state = GST_STATE (vis_bin);
552 GST_OBJECT_UNLOCK (vis_bin);
555 gst_pad_unlink (tee_pad, vis_sink_pad);
556 gst_object_unref (vis_sink_pad);
559 if (GST_IS_PAD (vqueue_pad)) {
560 gst_pad_unlink (vis_src_pad, vqueue_pad);
561 gst_object_unref (vis_src_pad);
565 /* Remove from vis_bin */
566 gst_bin_remove (vis_bin, play_bin->visualisation);
567 /* Set state to NULL */
568 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
569 /* And loose our ref */
570 gst_object_unref (play_bin->visualisation);
572 if (play_bin->pending_visualisation) {
573 /* Ref this new visualisation element before adding to the bin */
574 gst_object_ref (play_bin->pending_visualisation);
575 /* Add the new one */
576 gst_bin_add (vis_bin, play_bin->pending_visualisation);
577 /* Synchronizing state */
578 gst_element_set_state (play_bin->pending_visualisation, bin_state);
580 vis_sink_pad = gst_element_get_pad (play_bin->pending_visualisation,
582 vis_src_pad = gst_element_get_pad (play_bin->pending_visualisation, "src");
584 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
589 gst_pad_link (tee_pad, vis_sink_pad);
590 gst_pad_link (vis_src_pad, vqueue_pad);
594 gst_object_unref (play_bin->visualisation);
595 play_bin->visualisation = play_bin->pending_visualisation;
596 play_bin->pending_visualisation = NULL;
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 /* Do we already have a visualisation change pending ? */
654 if (play_bin->pending_visualisation) {
655 gst_object_unref (play_bin->pending_visualisation);
656 play_bin->pending_visualisation = g_value_get_object (value);
658 if (play_bin->pending_visualisation) {
659 gst_object_ref (play_bin->pending_visualisation);
660 gst_object_sink (GST_OBJECT_CAST (play_bin->pending_visualisation));
663 play_bin->pending_visualisation = g_value_get_object (value);
666 if (play_bin->pending_visualisation) {
667 gst_object_ref (play_bin->pending_visualisation);
668 gst_object_sink (GST_OBJECT_CAST (play_bin->pending_visualisation));
671 /* Was there a visualisation already set ? */
672 if (play_bin->visualisation != NULL) {
673 GstBin *vis_bin = NULL;
676 GST_BIN_CAST (gst_object_get_parent (GST_OBJECT_CAST (play_bin->
679 /* Check if the visualisation is already in a bin */
680 if (GST_IS_BIN (vis_bin)) {
681 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
683 /* Now get tee pad and block it async */
684 vis_sink_pad = gst_element_get_pad (play_bin->visualisation,
686 if (!GST_IS_PAD (vis_sink_pad)) {
689 tee_pad = gst_pad_get_peer (vis_sink_pad);
690 if (!GST_IS_PAD (tee_pad)) {
694 /* 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 = play_bin->pending_visualisation;
707 play_bin->pending_visualisation = NULL;
710 play_bin->visualisation = play_bin->pending_visualisation;
711 play_bin->pending_visualisation = NULL;
717 play_bin->volume = g_value_get_double (value);
718 if (play_bin->volume_element) {
719 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
720 play_bin->volume, NULL);
724 g_free (play_bin->font_desc);
725 play_bin->font_desc = g_strdup (g_value_get_string (value));
726 if (play_bin->textoverlay_element) {
727 g_object_set (G_OBJECT (play_bin->textoverlay_element),
728 "font-desc", g_value_get_string (value), NULL);
731 case ARG_CONNECTION_SPEED:
732 play_bin->connection_speed = g_value_get_uint (value) * 1000;
735 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
741 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
744 GstPlayBin *play_bin;
746 play_bin = GST_PLAY_BIN (object);
750 g_value_set_object (value, play_bin->video_sink);
753 g_value_set_object (value, play_bin->audio_sink);
756 g_value_set_object (value, play_bin->visualisation);
759 g_value_set_double (value, play_bin->volume);
762 gst_value_set_mini_object (value, GST_MINI_OBJECT (play_bin->frame));
764 case ARG_CONNECTION_SPEED:
765 g_value_set_uint (value, play_bin->connection_speed / 1000);
768 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
773 /* signal fired when the identity has received a new buffer. This is used for
774 * making screenshots.
777 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
779 GstPlayBin *play_bin = GST_PLAY_BIN (data);
780 GstBuffer **frame_p = &play_bin->frame;
782 gst_mini_object_replace ((GstMiniObject **) frame_p,
783 GST_MINI_OBJECT_CAST (frame));
785 /* applications need to know the buffer caps,
786 * make sure they are always set on the frame */
787 if (GST_BUFFER_CAPS (play_bin->frame) == NULL) {
790 if ((pad = gst_element_get_pad (identity, "sink"))) {
791 gst_buffer_set_caps (play_bin->frame, GST_PAD_CAPS (pad));
792 gst_object_unref (pad);
797 /* make the element (bin) that contains the elements needed to perform
798 * video display. We connect a handoff signal to identity so that we
799 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
801 * +-------------------------------------------------------------+
803 * | +--------+ +----------+ +----------+ +---------+ |
804 * | |identity| |colorspace| |videoscale| |videosink| |
805 * | +-sink src-sink src-sink src-sink | |
806 * | | +---+----+ +----------+ +----------+ +---------+ |
808 * +----------|--------------------------------------------------+
812 gen_video_element (GstPlayBin * play_bin)
819 GstElement *identity;
822 /* first see if we have it in the cache */
823 element = g_hash_table_lookup (play_bin->cache, "vbin");
824 if (element != NULL) {
828 if (play_bin->video_sink) {
829 sink = play_bin->video_sink;
831 sink = gst_element_factory_make ("autovideosink", "videosink");
833 sink = gst_element_factory_make ("xvimagesink", "videosink");
838 gst_object_ref (sink);
839 g_hash_table_insert (play_bin->cache, "video_sink", sink);
841 /* create a bin to hold objects, as we create them we add them to this bin so
842 * that when something goes wrong we only need to unref the bin */
843 element = gst_bin_new ("vbin");
844 gst_bin_add (GST_BIN_CAST (element), sink);
846 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
849 gst_bin_add (GST_BIN_CAST (element), conv);
851 scale = gst_element_factory_make ("videoscale", "vscale");
854 gst_bin_add (GST_BIN_CAST (element), scale);
856 identity = gst_element_factory_make ("identity", "id");
857 g_object_set (identity, "silent", TRUE, NULL);
858 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
859 gst_bin_add (GST_BIN_CAST (element), identity);
861 gst_element_link_pads (identity, "src", conv, "sink");
862 gst_element_link_pads (conv, "src", scale, "sink");
863 /* be more careful with the pad from the custom sink element, it might not
865 if (!gst_element_link_pads (scale, "src", sink, NULL))
868 pad = gst_element_get_pad (identity, "sink");
869 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
870 gst_object_unref (pad);
872 gst_element_set_state (element, GST_STATE_READY);
874 /* since we're gonna add it to a bin but don't want to lose it,
875 * we keep a reference. */
876 gst_object_ref (element);
877 g_hash_table_insert (play_bin->cache, "vbin", element);
884 /* FIXME: this warrants adding a CORE error category for missing
885 * elements/plugins */
886 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
887 (_("Both autovideosink and xvimagesink elements are missing.")),
893 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
894 (_("Missing element '%s' - check your GStreamer installation."),
895 "ffmpegcolorspace"), (NULL));
896 gst_object_unref (element);
902 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
903 (_("Missing element '%s' - check your GStreamer installation."),
904 "videoscale"), ("possibly a liboil version mismatch?"));
905 gst_object_unref (element);
910 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
911 (NULL), ("Failed to configure the video sink."));
912 gst_object_unref (element);
917 /* make an element for playback of video with subtitles embedded.
919 * +--------------------------------------------------+
920 * | tbin +-------------+ |
921 * | +-----+ | textoverlay | +------+ |
922 * | | csp | +--video_sink | | vbin | |
923 * video_sink-sink src+ +-text_sink src-sink | |
924 * | +-----+ | +-------------+ +------+ |
925 * text_sink-------------+ |
926 * +--------------------------------------------------+
928 * If there is no subtitle renderer this function will simply return the
929 * videosink without the text_sink pad.
932 gen_text_element (GstPlayBin * play_bin)
934 GstElement *element, *csp, *overlay, *vbin;
937 /* Create the video rendering bin, error is posted when this fails. */
938 vbin = gen_video_element (play_bin);
943 overlay = gst_element_factory_make ("textoverlay", "overlay");
945 /* If no overlay return the video bin without subtitle support. */
950 element = gst_bin_new ("textbin");
952 /* Set some parameters */
953 g_object_set (G_OBJECT (overlay),
954 "halign", "center", "valign", "bottom", NULL);
955 if (play_bin->font_desc) {
956 g_object_set (G_OBJECT (overlay), "font-desc", play_bin->font_desc, NULL);
960 play_bin->textoverlay_element = GST_ELEMENT_CAST (gst_object_ref (overlay));
962 /* we know this will succeed, as the video bin already created one before */
963 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
965 /* Add our elements */
966 gst_bin_add_many (GST_BIN_CAST (element), csp, overlay, vbin, NULL);
969 gst_element_link_pads (csp, "src", overlay, "video_sink");
970 gst_element_link_pads (overlay, "src", vbin, "sink");
972 /* Add ghost pads on the subtitle bin */
973 pad = gst_element_get_pad (overlay, "text_sink");
974 gst_element_add_pad (element, gst_ghost_pad_new ("text_sink", pad));
975 gst_object_unref (pad);
977 pad = gst_element_get_pad (csp, "sink");
978 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
979 gst_object_unref (pad);
981 /* Set state to READY */
982 gst_element_set_state (element, GST_STATE_READY);
989 GST_WARNING_OBJECT (play_bin,
990 "No overlay (pango) element, subtitles disabled");
995 /* make the element (bin) that contains the elements needed to perform
998 * +-------------------------------------------------------------+
1000 * | +---------+ +----------+ +---------+ +---------+ |
1001 * | |audioconv| |audioscale| | volume | |audiosink| |
1002 * | +-sink src-sink src-sink src-sink | |
1003 * | | +---------+ +----------+ +---------+ +---------+ |
1005 * +-------------------------------------------------------------+
1008 gen_audio_element (GstPlayBin * play_bin)
1011 GstElement *element;
1018 element = g_hash_table_lookup (play_bin->cache, "abin");
1019 if (element != NULL)
1022 if (play_bin->audio_sink) {
1023 sink = play_bin->audio_sink;
1025 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
1027 sink = gst_element_factory_make ("alsasink", "audiosink");
1032 play_bin->audio_sink = GST_ELEMENT_CAST (gst_object_ref (sink));
1035 gst_object_ref (sink);
1036 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
1038 element = gst_bin_new ("abin");
1039 gst_bin_add (GST_BIN_CAST (element), sink);
1041 conv = gst_element_factory_make ("audioconvert", "aconv");
1043 goto no_audioconvert;
1044 gst_bin_add (GST_BIN_CAST (element), conv);
1046 scale = gst_element_factory_make ("audioresample", "aresample");
1048 goto no_audioresample;
1049 gst_bin_add (GST_BIN_CAST (element), scale);
1051 volume = gst_element_factory_make ("volume", "volume");
1052 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
1053 play_bin->volume_element = volume;
1054 gst_bin_add (GST_BIN_CAST (element), volume);
1056 res = gst_element_link_pads (conv, "src", scale, "sink");
1057 res &= gst_element_link_pads (scale, "src", volume, "sink");
1058 res &= gst_element_link_pads (volume, "src", sink, NULL);
1062 pad = gst_element_get_pad (conv, "sink");
1063 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1064 gst_object_unref (pad);
1066 gst_element_set_state (element, GST_STATE_READY);
1068 /* since we're gonna add it to a bin but don't want to lose it,
1069 * we keep a reference. */
1070 gst_object_ref (element);
1071 g_hash_table_insert (play_bin->cache, "abin", element);
1078 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1079 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
1084 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1085 (_("Missing element '%s' - check your GStreamer installation."),
1086 "audioconvert"), ("possibly a liboil version mismatch?"));
1087 gst_object_unref (element);
1093 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1094 (_("Missing element '%s' - check your GStreamer installation."),
1095 "audioresample"), ("possibly a liboil version mismatch?"));
1096 gst_object_unref (element);
1101 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1102 (NULL), ("Failed to configure the audio sink."));
1103 gst_object_unref (element);
1108 /* make the element (bin) that contains the elements needed to perform
1109 * visualisation ouput. The idea is to split the audio using tee, then
1110 * sending the output to the regular audio bin and the other output to
1111 * the vis plugin that transforms it into a video that is rendered with the
1112 * normal video bin. The video bin is run in a thread to make sure it does
1113 * not block the audio playback pipeline.
1115 * +--------------------------------------------------------------------+
1117 * | +------+ +--------+ +----------------+ |
1118 * | | tee | | aqueue | | abin ... | |
1119 * | +-sink src-sink src-sink | |
1120 * | | | | +--------+ +----------------+ |
1122 * | | | | +------+ +---------+ +------+ +-----------+ |
1123 * | | | | |vqueue| |audioconv| | vis | | vbin ... | |
1124 * | | | src-sink src-sink src-sink src-sink | |
1125 * | | | | +------+ +---------+ +------+ +-----------+ |
1129 +---------------------------------------------------------------------+
1132 gen_vis_element (GstPlayBin * play_bin)
1135 GstElement *element;
1141 GstElement *vqueue, *aqueue;
1144 /* errors are already posted when these fail. */
1145 asink = gen_audio_element (play_bin);
1148 vsink = gen_video_element (play_bin);
1150 gst_object_unref (asink);
1154 element = gst_bin_new ("visbin");
1155 tee = gst_element_factory_make ("tee", "tee");
1157 vqueue = gst_element_factory_make ("queue", "vqueue");
1158 aqueue = gst_element_factory_make ("queue", "aqueue");
1160 gst_bin_add (GST_BIN_CAST (element), asink);
1161 gst_bin_add (GST_BIN_CAST (element), vqueue);
1162 gst_bin_add (GST_BIN_CAST (element), aqueue);
1163 gst_bin_add (GST_BIN_CAST (element), vsink);
1164 gst_bin_add (GST_BIN_CAST (element), tee);
1166 conv = gst_element_factory_make ("audioconvert", "aconv");
1168 goto no_audioconvert;
1169 gst_bin_add (GST_BIN_CAST (element), conv);
1171 if (play_bin->visualisation) {
1172 gst_object_ref (play_bin->visualisation);
1173 vis = play_bin->visualisation;
1175 vis = gst_element_factory_make ("goom", "vis");
1179 gst_bin_add (GST_BIN_CAST (element), vis);
1181 res = gst_element_link_pads (vqueue, "src", conv, "sink");
1182 res &= gst_element_link_pads (conv, "src", vis, "sink");
1183 res &= gst_element_link_pads (vis, "src", vsink, "sink");
1187 pad = gst_element_get_pad (aqueue, "sink");
1188 rpad = gst_element_get_request_pad (tee, "src%d");
1189 gst_pad_link (rpad, pad);
1190 gst_object_unref (rpad);
1191 gst_object_unref (pad);
1192 gst_element_link_pads (aqueue, "src", asink, "sink");
1194 pad = gst_element_get_pad (vqueue, "sink");
1195 rpad = gst_element_get_request_pad (tee, "src%d");
1196 gst_pad_link (rpad, pad);
1197 gst_object_unref (rpad);
1198 gst_object_unref (pad);
1200 pad = gst_element_get_pad (tee, "sink");
1201 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
1202 gst_object_unref (pad);
1209 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1210 (_("Missing element '%s' - check your GStreamer installation."),
1211 "audioconvert"), ("possibly a liboil version mismatch?"));
1212 gst_object_unref (element);
1217 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
1218 (_("Missing element '%s' - check your GStreamer installation."),
1220 gst_object_unref (element);
1225 GST_ELEMENT_ERROR (play_bin, CORE, PAD,
1226 (NULL), ("Failed to configure the visualisation element."));
1227 gst_object_unref (element);
1232 /* get rid of all installed sinks */
1234 remove_sinks (GstPlayBin * play_bin)
1238 GstElement *element;
1241 if (play_bin->cache == NULL)
1244 GST_DEBUG ("removesinks");
1245 element = g_hash_table_lookup (play_bin->cache, "abin");
1246 if (element != NULL) {
1247 parent = gst_element_get_parent (element);
1248 if (parent != NULL) {
1249 /* we remove the element from the parent so that
1250 * there is no unwanted state change when the parent
1252 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1253 gst_element_set_state (element, GST_STATE_NULL);
1254 gst_bin_remove (GST_BIN_CAST (parent), element);
1255 gst_object_unref (parent);
1257 pad = gst_element_get_pad (element, "sink");
1259 peer = gst_pad_get_peer (pad);
1261 gst_pad_unlink (peer, pad);
1262 gst_object_unref (peer);
1264 gst_object_unref (pad);
1267 element = g_hash_table_lookup (play_bin->cache, "vbin");
1268 if (element != NULL) {
1269 parent = gst_element_get_parent (element);
1270 if (parent != NULL) {
1271 play_bin->sinks = g_list_remove (play_bin->sinks, element);
1272 gst_element_set_state (element, GST_STATE_NULL);
1273 gst_bin_remove (GST_BIN_CAST (parent), element);
1274 gst_object_unref (parent);
1276 pad = gst_element_get_pad (element, "sink");
1278 peer = gst_pad_get_peer (pad);
1280 gst_pad_unlink (peer, pad);
1281 gst_object_unref (peer);
1283 gst_object_unref (pad);
1287 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
1288 GstElement *element = GST_ELEMENT_CAST (sinks->data);
1292 pad = gst_element_get_pad (element, "sink");
1294 GST_LOG ("removing sink %p", element);
1296 peer = gst_pad_get_peer (pad);
1298 gst_pad_unlink (peer, pad);
1299 gst_object_unref (peer);
1301 gst_object_unref (pad);
1303 gst_element_set_state (element, GST_STATE_NULL);
1304 gst_bin_remove (GST_BIN_CAST (play_bin), element);
1306 g_list_free (play_bin->sinks);
1307 play_bin->sinks = NULL;
1309 if (play_bin->visualisation) {
1310 GstElement *vis_bin;
1313 GST_ELEMENT_CAST (gst_element_get_parent (play_bin->visualisation));
1315 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
1318 gst_bin_remove (GST_BIN_CAST (vis_bin), play_bin->visualisation);
1319 gst_object_unref (vis_bin);
1323 if (play_bin->frame) {
1324 gst_buffer_unref (play_bin->frame);
1325 play_bin->frame = NULL;
1328 if (play_bin->textoverlay_element) {
1329 gst_object_unref (play_bin->textoverlay_element);
1330 play_bin->textoverlay_element = NULL;
1334 /* loop over the streams and set up the pipeline to play this
1335 * media file. First we count the number of audio and video streams.
1336 * If there is no video stream but there exists an audio stream,
1337 * we install a visualisation pipeline.
1339 * Also make sure to only connect the first audio and video pad. FIXME
1340 * this should eventually be handled with a tuner interface so that
1341 * one can switch the streams.
1343 * This function takes ownership of @sink.*
1346 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad,
1347 GstPad * subtitle_pad)
1350 GstPadLinkReturn linkres;
1352 GstStateChangeReturn stateret;
1355 g_return_val_if_fail (sink != NULL, FALSE);
1357 /* For live pipelines we need to add the bin in the same state as the
1358 * parent so that it starts as soon as it is prerolled. */
1359 if (play_bin->is_live)
1360 state = GST_STATE_PLAYING;
1362 state = GST_STATE_PAUSED;
1364 /* this is only for debugging */
1365 parent = gst_pad_get_parent_element (srcpad);
1367 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
1368 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
1369 gst_object_unref (parent);
1371 gst_bin_add (GST_BIN_CAST (play_bin), sink);
1373 /* for live pipelines, disable the sync in the sinks until core handles this
1375 if (play_bin->is_live)
1376 gst_element_set_clock (sink, NULL);
1378 /* bring it to the PAUSED state so we can link to the peer without
1379 * breaking the flow */
1380 stateret = gst_element_set_state (sink, state);
1381 if (stateret == GST_STATE_CHANGE_FAILURE)
1384 /* we found a sink for this stream, now try to install it */
1385 sinkpad = gst_element_get_pad (sink, "sink");
1386 linkres = gst_pad_link (srcpad, sinkpad);
1387 gst_object_unref (sinkpad);
1389 /* try to link the pad of the sink to the stream */
1390 if (GST_PAD_LINK_FAILED (linkres))
1393 if (GST_IS_PAD (subtitle_pad)) {
1394 sinkpad = gst_element_get_pad (sink, "text_sink");
1395 linkres = gst_pad_link (subtitle_pad, sinkpad);
1396 gst_object_unref (sinkpad);
1399 /* try to link the subtitle pad of the sink to the stream, this is not
1401 if (GST_PAD_LINK_FAILED (linkres))
1402 goto subtitle_failed;
1405 /* we got the sink succesfully linked, now keep the sink
1406 * in our internal list */
1407 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
1414 gst_element_set_state (sink, GST_STATE_NULL);
1415 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1416 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1424 /* could not link this stream */
1425 caps = gst_pad_get_caps (srcpad);
1426 capsstr = gst_caps_to_string (caps);
1427 g_warning ("could not link %s: %d", capsstr, linkres);
1428 GST_DEBUG_OBJECT (play_bin,
1429 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1431 gst_caps_unref (caps);
1433 gst_element_set_state (sink, GST_STATE_NULL);
1434 gst_bin_remove (GST_BIN_CAST (play_bin), sink);
1442 /* could not link this stream */
1443 caps = gst_pad_get_caps (subtitle_pad);
1444 capsstr = gst_caps_to_string (caps);
1445 GST_DEBUG_OBJECT (play_bin,
1446 "subtitle link failed when adding sink, caps %s, reason %d", capsstr,
1449 gst_caps_unref (caps);
1457 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1459 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1460 GList *streaminfo = NULL, *s;
1461 gboolean need_vis = FALSE;
1462 gboolean need_text = FALSE;
1463 GstPad *textsrcpad = NULL, *pad = NULL;
1465 gboolean res = TRUE;
1467 /* get rid of existing sinks */
1468 if (play_bin->sinks) {
1469 remove_sinks (play_bin);
1471 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1473 /* find out what to do */
1474 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
1475 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1477 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
1478 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1479 play_bin->visualisation != NULL) {
1483 /* now actually connect everything */
1484 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
1485 for (s = streaminfo; s; s = g_list_next (s)) {
1486 GObject *obj = G_OBJECT (s->data);
1490 g_object_get (obj, "type", &type, NULL);
1491 g_object_get (obj, "object", &object, NULL);
1495 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1497 sink = gen_vis_element (play_bin);
1499 sink = gen_audio_element (play_bin);
1504 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
1506 res = add_sink (play_bin, sink, pad, NULL);
1507 gst_object_unref (pad);
1511 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
1513 GstObject *parent = NULL, *grandparent = NULL;
1514 GstPad *ghost = NULL;
1516 sink = gen_text_element (play_bin);
1518 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
1520 /* This pad is from subtitle-bin, we need to create a ghost pad to have
1521 common grandparents */
1522 parent = gst_object_get_parent (GST_OBJECT_CAST (textsrcpad));
1524 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no parent !");
1525 gst_object_unref (textsrcpad);
1530 grandparent = gst_object_get_parent (parent);
1532 GST_WARNING_OBJECT (textsrcpad, "subtitle pad has no grandparent !");
1533 gst_object_unref (parent);
1534 gst_object_unref (textsrcpad);
1539 /* We ghost the pad on subtitle_bin only, if the text pad is from the
1540 media demuxer we keep it as it is */
1541 if (!GST_IS_PLAY_BIN (grandparent)) {
1542 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from a subtitle "
1543 "file, ghosting to a suitable hierarchy");
1544 ghost = gst_ghost_pad_new ("text_src", textsrcpad);
1545 if (!GST_IS_PAD (ghost)) {
1546 GST_WARNING_OBJECT (textsrcpad, "failed creating ghost pad for "
1548 gst_object_unref (parent);
1549 gst_object_unref (grandparent);
1550 gst_object_unref (textsrcpad);
1555 if (gst_element_add_pad (GST_ELEMENT_CAST (grandparent), ghost)) {
1556 gst_object_unref (textsrcpad);
1557 textsrcpad = gst_object_ref (ghost);
1559 GST_WARNING_OBJECT (ghost, "failed adding ghost pad on subtitle-bin");
1560 gst_object_unref (ghost);
1561 gst_object_unref (textsrcpad);
1565 GST_DEBUG_OBJECT (textsrcpad, "this subtitle pad is from the demuxer "
1566 "no changes to hierarchy needed");
1569 gst_object_unref (parent);
1570 gst_object_unref (grandparent);
1572 sink = gen_video_element (play_bin);
1577 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
1579 res = add_sink (play_bin, sink, pad, textsrcpad);
1580 gst_object_unref (pad);
1582 gst_object_unref (textsrcpad);
1585 /* remove the sinks now, pipeline get_state will now wait for the
1586 * sinks to preroll */
1587 if (play_bin->fakesink) {
1588 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1589 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1590 play_bin->fakesink = NULL;
1596 /* Send an event to our sinks until one of them works; don't then send to the
1597 * remaining sinks (unlike GstBin)
1600 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1602 GList *sinks = play_bin->sinks;
1603 gboolean res = TRUE;
1606 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1608 gst_event_ref (event);
1609 if ((res = gst_element_send_event (sink, event))) {
1610 GST_DEBUG_OBJECT (play_bin,
1611 "Sent event succesfully to sink %" GST_PTR_FORMAT, sink);
1614 GST_DEBUG_OBJECT (play_bin,
1615 "Event failed when sent to sink %" GST_PTR_FORMAT, sink);
1617 sinks = g_list_next (sinks);
1620 gst_event_unref (event);
1626 do_playbin_seek (GstElement * element, GstEvent * event)
1631 gboolean was_playing = FALSE;
1634 gst_event_parse_seek (event, &rate, NULL, &flags, NULL, NULL, NULL, NULL);
1636 flush = flags & GST_SEEK_FLAG_FLUSH;
1641 /* need to call _get_state() since a bin state is only updated
1642 * with this call. */
1643 gst_element_get_state (element, &state, NULL, 0);
1644 was_playing = state == GST_STATE_PLAYING;
1647 gst_element_set_state (element, GST_STATE_PAUSED);
1648 gst_element_get_state (element, NULL, NULL, 50 * GST_MSECOND);
1652 GST_DEBUG_OBJECT (element, "Sending seek event to a sink");
1653 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1656 /* need to reset the stream time to 0 after a flushing seek */
1658 gst_pipeline_set_new_stream_time (GST_PIPELINE (element), 0);
1661 /* and continue playing */
1662 gst_element_set_state (element, GST_STATE_PLAYING);
1667 /* We only want to send the event to a single sink (overriding GstBin's
1668 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1669 * events appropriately. So, this is a messy duplication of code. */
1671 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1673 gboolean res = FALSE;
1674 GstEventType event_type = GST_EVENT_TYPE (event);
1677 switch (event_type) {
1678 case GST_EVENT_SEEK:
1679 res = do_playbin_seek (element, event);
1682 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1689 /* Override the set_clock function, we don't want to set a clock on the sinks
1690 * when we are live pipeline so that they don't synchronize until this is
1693 gst_play_bin_set_clock_func (GstElement * element, GstClock * clock)
1697 GstPlayBin *play_bin;
1698 gboolean res = TRUE;
1699 GstElement *asink, *vsink;
1701 bin = GST_BIN (element);
1702 play_bin = GST_PLAY_BIN (element);
1704 asink = g_hash_table_lookup (play_bin->cache, "audio_sink");
1705 vsink = g_hash_table_lookup (play_bin->cache, "video_sink");
1707 GST_DEBUG_OBJECT (play_bin, "setting clock, is_live %d", play_bin->is_live);
1709 GST_OBJECT_LOCK (bin);
1710 if (element->clock != clock) {
1711 for (children = bin->children; children; children = g_list_next (children)) {
1712 GstElement *child = GST_ELEMENT (children->data);
1714 if (play_bin->is_live && (child == asink || child == vsink))
1715 res &= gst_element_set_clock (child, NULL);
1717 res &= gst_element_set_clock (child, clock);
1720 GST_OBJECT_UNLOCK (bin);
1726 value_list_append_structure_list (GValue * list_val, GstStructure ** first,
1727 GList * structure_list)
1731 for (l = structure_list; l != NULL; l = l->next) {
1732 GValue val = { 0, };
1735 *first = gst_structure_copy ((GstStructure *) l->data);
1737 g_value_init (&val, GST_TYPE_STRUCTURE);
1738 g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
1739 gst_value_list_append_value (list_val, &val);
1740 g_value_unset (&val);
1744 /* if it's a redirect message with multiple redirect locations we might
1745 * want to pick a different 'best' location depending on the required
1746 * bitrates and the connection speed */
1748 gst_play_bin_handle_redirect_message (GstPlayBin * playbin, GstMessage * msg)
1750 const GValue *locations_list, *location_val;
1751 GstMessage *new_msg;
1752 GstStructure *new_structure = NULL;
1753 GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
1754 GValue new_list = { 0, };
1757 GST_DEBUG_OBJECT (playbin, "redirect message: %" GST_PTR_FORMAT, msg);
1758 GST_DEBUG_OBJECT (playbin, "connection speed: %u", playbin->connection_speed);
1760 if (playbin->connection_speed == 0 || msg->structure == NULL)
1763 locations_list = gst_structure_get_value (msg->structure, "locations");
1764 if (locations_list == NULL)
1767 size = gst_value_list_get_size (locations_list);
1771 /* maintain existing order as much as possible, just sort references
1772 * with too high a bitrate to the end (the assumption being that if
1773 * bitrates are given they are given for all interesting streams and
1774 * that the you-need-at-least-version-xyz redirect has the same bitrate
1775 * as the lowest referenced redirect alternative) */
1776 for (i = 0; i < size; ++i) {
1777 const GstStructure *s;
1780 location_val = gst_value_list_get_value (locations_list, i);
1781 s = (const GstStructure *) g_value_get_boxed (location_val);
1782 if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
1783 GST_DEBUG_OBJECT (playbin, "no bitrate: %" GST_PTR_FORMAT, s);
1784 l_neutral = g_list_append (l_neutral, (gpointer) s);
1785 } else if (bitrate > playbin->connection_speed) {
1786 GST_DEBUG_OBJECT (playbin, "bitrate too high: %" GST_PTR_FORMAT, s);
1787 l_bad = g_list_append (l_bad, (gpointer) s);
1788 } else if (bitrate <= playbin->connection_speed) {
1789 GST_DEBUG_OBJECT (playbin, "bitrate OK: %" GST_PTR_FORMAT, s);
1790 l_good = g_list_append (l_good, (gpointer) s);
1794 g_value_init (&new_list, GST_TYPE_LIST);
1795 value_list_append_structure_list (&new_list, &new_structure, l_good);
1796 value_list_append_structure_list (&new_list, &new_structure, l_neutral);
1797 value_list_append_structure_list (&new_list, &new_structure, l_bad);
1798 gst_structure_set_value (new_structure, "locations", &new_list);
1799 g_value_unset (&new_list);
1801 g_list_free (l_good);
1802 g_list_free (l_neutral);
1803 g_list_free (l_bad);
1805 new_msg = gst_message_new_element (msg->src, new_structure);
1806 gst_message_unref (msg);
1808 GST_DEBUG_OBJECT (playbin, "new redirect message: %" GST_PTR_FORMAT, new_msg);
1813 gst_play_bin_handle_message (GstBin * bin, GstMessage * msg)
1815 if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
1816 && gst_structure_has_name (msg->structure, "redirect")) {
1817 msg = gst_play_bin_handle_redirect_message (GST_PLAY_BIN (bin), msg);
1820 GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
1823 static GstStateChangeReturn
1824 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1826 GstStateChangeReturn ret;
1827 GstPlayBin *play_bin;
1829 play_bin = GST_PLAY_BIN (element);
1832 switch (transition) {
1833 case GST_STATE_CHANGE_READY_TO_PAUSED:
1834 /* this really is the easiest way to make the state change return
1835 * ASYNC until we added the sinks */
1836 if (!play_bin->fakesink) {
1837 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1838 gst_bin_add (GST_BIN_CAST (play_bin), play_bin->fakesink);
1845 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1846 if (ret == GST_STATE_CHANGE_FAILURE)
1849 switch (transition) {
1850 case GST_STATE_CHANGE_READY_TO_PAUSED:
1851 /* remember us being a live pipeline */
1852 play_bin->is_live = (ret == GST_STATE_CHANGE_NO_PREROLL);
1853 GST_DEBUG_OBJECT (play_bin, "is live: %d", play_bin->is_live);
1855 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1856 /* FIXME Release audio device when we implement that */
1858 case GST_STATE_CHANGE_PAUSED_TO_READY:
1859 /* remove sinks we added */
1860 remove_sinks (play_bin);
1861 /* and there might be a fakesink we need to clean up now */
1862 if (play_bin->fakesink) {
1863 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1864 gst_bin_remove (GST_BIN_CAST (play_bin), play_bin->fakesink);
1865 play_bin->fakesink = NULL;
1876 plugin_init (GstPlugin * plugin)
1878 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1881 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
1883 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
1884 #endif /* ENABLE_NLS */
1886 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
1890 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1893 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,