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.
27 #include <gst/gst-i18n-plugin.h>
29 #include "gstplaybasebin.h"
31 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
32 #define GST_CAT_DEFAULT gst_play_bin_debug
34 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
35 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
36 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
37 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
38 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
40 #define VOLUME_MAX_DOUBLE 4.0
42 typedef struct _GstPlayBin GstPlayBin;
43 typedef struct _GstPlayBinClass GstPlayBinClass;
47 GstPlayBaseBin parent;
49 /* the configurable elements */
51 GstElement *audio_sink;
52 GstElement *video_sink;
53 GstElement *visualisation;
54 GstElement *volume_element;
55 GstElement *textoverlay_element;
58 /* these are the currently active sinks */
61 /* the last captured frame for snapshots */
64 /* our cache for the sinks */
67 /* font description */
71 struct _GstPlayBinClass
73 GstPlayBaseBinClass parent_class;
94 static void gst_play_bin_class_init (GstPlayBinClass * klass);
95 static void gst_play_bin_init (GstPlayBin * play_bin);
96 static void gst_play_bin_dispose (GObject * object);
98 static void setup_sinks (GstPlayBaseBin * play_base_bin,
99 GstPlayBaseGroup * group);
100 static void remove_sinks (GstPlayBin * play_bin);
102 static void gst_play_bin_set_property (GObject * object, guint prop_id,
103 const GValue * value, GParamSpec * spec);
104 static void gst_play_bin_get_property (GObject * object, guint prop_id,
105 GValue * value, GParamSpec * spec);
107 static gboolean gst_play_bin_send_event (GstElement * element,
109 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
110 GstStateChange transition);
112 static GstElementClass *parent_class;
114 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
116 static GstElementDetails gst_play_bin_details = {
118 "Generic/Bin/Player",
119 "Autoplug and play media from an uri",
120 "Wim Taymans <wim@fluendo.com>"
124 gst_play_bin_get_type (void)
126 static GType gst_play_bin_type = 0;
128 if (!gst_play_bin_type) {
129 static const GTypeInfo gst_play_bin_info = {
130 sizeof (GstPlayBinClass),
133 (GClassInitFunc) gst_play_bin_class_init,
138 (GInstanceInitFunc) gst_play_bin_init,
142 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
143 "GstPlayBin", &gst_play_bin_info, 0);
146 return gst_play_bin_type;
150 gst_play_bin_class_init (GstPlayBinClass * klass)
152 GObjectClass *gobject_klass;
153 GstElementClass *gstelement_klass;
154 GstBinClass *gstbin_klass;
155 GstPlayBaseBinClass *playbasebin_klass;
157 gobject_klass = (GObjectClass *) klass;
158 gstelement_klass = (GstElementClass *) klass;
159 gstbin_klass = (GstBinClass *) klass;
160 playbasebin_klass = (GstPlayBaseBinClass *) klass;
162 parent_class = g_type_class_ref (gst_play_base_bin_get_type ());
164 gobject_klass->set_property = gst_play_bin_set_property;
165 gobject_klass->get_property = gst_play_bin_get_property;
167 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
168 g_param_spec_object ("video-sink", "Video Sink",
169 "the video output element to use (NULL = default sink)",
170 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
171 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
172 g_param_spec_object ("audio-sink", "Audio Sink",
173 "the audio output element to use (NULL = default sink)",
174 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
175 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
176 g_param_spec_object ("vis-plugin", "Vis plugin",
177 "the visualization element to use (NULL = none)",
178 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
179 g_object_class_install_property (gobject_klass, ARG_VOLUME,
180 g_param_spec_double ("volume", "volume", "volume",
181 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
182 g_object_class_install_property (gobject_klass, ARG_FRAME,
183 gst_param_spec_mini_object ("frame", "Frame",
184 "The last frame (NULL = no video available)",
185 GST_TYPE_BUFFER, G_PARAM_READABLE));
186 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
187 g_param_spec_string ("subtitle-font-desc",
188 "Subtitle font description",
189 "Pango font description of font "
190 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
192 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
194 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
196 gstelement_klass->change_state =
197 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
198 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
200 playbasebin_klass->setup_output_pads = setup_sinks;
204 gst_play_bin_init (GstPlayBin * play_bin)
206 play_bin->video_sink = NULL;
207 play_bin->audio_sink = NULL;
208 play_bin->visualisation = NULL;
209 play_bin->volume_element = NULL;
210 play_bin->textoverlay_element = NULL;
211 play_bin->volume = 1.0;
212 play_bin->sinks = NULL;
213 play_bin->frame = NULL;
214 play_bin->font_desc = NULL;
215 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
216 NULL, (GDestroyNotify) gst_object_unref);
220 gst_play_bin_dispose (GObject * object)
222 GstPlayBin *play_bin;
224 play_bin = GST_PLAY_BIN (object);
226 if (play_bin->cache != NULL) {
227 remove_sinks (play_bin);
228 g_hash_table_destroy (play_bin->cache);
229 play_bin->cache = NULL;
232 if (play_bin->audio_sink != NULL) {
233 gst_object_unref (play_bin->audio_sink);
234 play_bin->audio_sink = NULL;
236 if (play_bin->video_sink != NULL) {
237 gst_object_unref (play_bin->video_sink);
238 play_bin->video_sink = NULL;
240 if (play_bin->visualisation != NULL) {
241 gst_object_unref (play_bin->visualisation);
242 play_bin->visualisation = NULL;
244 g_free (play_bin->font_desc);
245 play_bin->font_desc = NULL;
247 G_OBJECT_CLASS (parent_class)->dispose (object);
252 gst_play_bin_set_property (GObject * object, guint prop_id,
253 const GValue * value, GParamSpec * pspec)
255 GstPlayBin *play_bin;
257 g_return_if_fail (GST_IS_PLAY_BIN (object));
259 play_bin = GST_PLAY_BIN (object);
263 if (play_bin->video_sink != NULL) {
264 gst_object_unref (play_bin->video_sink);
266 play_bin->video_sink = g_value_get_object (value);
267 if (play_bin->video_sink != NULL) {
268 gst_object_ref (play_bin->video_sink);
269 gst_object_sink (GST_OBJECT (play_bin->video_sink));
271 /* when changing the videosink, we just remove the
272 * video pipeline from the cache so that it will be
273 * regenerated with the new sink element */
274 g_hash_table_remove (play_bin->cache, "vbin");
277 if (play_bin->audio_sink != NULL) {
278 gst_object_unref (play_bin->audio_sink);
280 play_bin->audio_sink = g_value_get_object (value);
281 if (play_bin->audio_sink != NULL) {
282 gst_object_ref (play_bin->audio_sink);
283 gst_object_sink (GST_OBJECT (play_bin->audio_sink));
285 g_hash_table_remove (play_bin->cache, "abin");
288 if (play_bin->visualisation != NULL) {
289 gst_object_unref (play_bin->visualisation);
291 play_bin->visualisation = g_value_get_object (value);
292 if (play_bin->visualisation != NULL) {
293 gst_object_ref (play_bin->visualisation);
294 gst_object_sink (GST_OBJECT (play_bin->visualisation));
298 play_bin->volume = g_value_get_double (value);
299 if (play_bin->volume_element) {
300 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
301 play_bin->volume, NULL);
305 g_free (play_bin->font_desc);
306 play_bin->font_desc = g_strdup (g_value_get_string (value));
307 if (play_bin->textoverlay_element) {
308 g_object_set (G_OBJECT (play_bin->textoverlay_element),
309 "font-desc", g_value_get_string (value), NULL);
313 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
319 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
322 GstPlayBin *play_bin;
324 g_return_if_fail (GST_IS_PLAY_BIN (object));
326 play_bin = GST_PLAY_BIN (object);
330 g_value_set_object (value, play_bin->video_sink);
333 g_value_set_object (value, play_bin->audio_sink);
336 g_value_set_object (value, play_bin->visualisation);
339 g_value_set_double (value, play_bin->volume);
342 gst_value_set_mini_object (value, GST_MINI_OBJECT (play_bin->frame));
345 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
350 /* signal fired when the identity has received a new buffer. This is used for
351 * making screenshots.
354 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
356 GstPlayBin *play_bin = GST_PLAY_BIN (data);
358 if (play_bin->frame) {
359 gst_buffer_unref (play_bin->frame);
361 play_bin->frame = gst_buffer_ref (frame);
364 /* make the element (bin) that contains the elements needed to perform
365 * video display. We connect a handoff signal to identity so that we
366 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
368 * +-------------------------------------------------------------+
370 * | +--------+ +----------+ +----------+ +---------+ |
371 * | |identity| |colorspace| |videoscale| |videosink| |
372 * | +-sink src-sink src-sink src-sink | |
373 * | | +---+----+ +----------+ +----------+ +---------+ |
375 * +----------|--------------------------------------------------+
378 /* FIXME: this might return NULL if no videosink was found, handle
381 gen_video_element (GstPlayBin * play_bin)
388 GstElement *identity;
391 /* first see if we have it in the cache */
392 element = g_hash_table_lookup (play_bin->cache, "vbin");
393 if (element != NULL) {
397 if (play_bin->video_sink) {
398 sink = play_bin->video_sink;
400 sink = gst_element_factory_make ("autovideosink", "videosink");
402 sink = gst_element_factory_make ("xvimagesink", "videosink");
404 /* FIXME: this warrants adding a CORE error category for missing
405 * elements/plugins */
407 GST_ELEMENT_ERROR (play_bin, CORE, FAILED,
408 (_("Both autovideosink and xvimagesink elements are missing.")),
413 gst_object_ref (sink);
414 g_hash_table_insert (play_bin->cache, "video_sink", sink);
417 element = gst_bin_new ("vbin");
418 identity = gst_element_factory_make ("identity", "id");
419 g_object_set (identity, "silent", TRUE, NULL);
420 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
421 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
422 scale = gst_element_factory_make ("videoscale", "vscale");
423 gst_bin_add (GST_BIN (element), identity);
424 gst_bin_add (GST_BIN (element), conv);
425 gst_bin_add (GST_BIN (element), scale);
426 gst_bin_add (GST_BIN (element), sink);
427 gst_element_link_pads (identity, "src", conv, "sink");
428 gst_element_link_pads (conv, "src", scale, "sink");
429 gst_element_link_pads (scale, "src", sink, "sink");
431 pad = gst_element_get_pad (identity, "sink");
432 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
433 gst_object_unref (pad);
435 gst_element_set_state (element, GST_STATE_READY);
437 /* since we're gonna add it to a bin but don't want to lose it,
438 * we keep a reference. */
439 gst_object_ref (element);
440 g_hash_table_insert (play_bin->cache, "vbin", element);
445 /* make an element for playback of video with subtitles embedded.
447 * +--------------------------------------------------+
448 * | tbin +-------------+ |
449 * | +-----+ | textoverlay | +------+ |
450 * | | csp | +--video_sink | | vbin | |
451 * video_sink-sink src+ +-text_sink src-sink | |
452 * | +-----+ | +-------------+ +------+ |
453 * text_sink-------------+ |
454 * +--------------------------------------------------+
458 gen_text_element (GstPlayBin * play_bin)
460 GstElement *element, *csp, *overlay, *vbin;
463 overlay = gst_element_factory_make ("textoverlay", "overlay");
464 g_object_set (G_OBJECT (overlay),
465 "halign", "center", "valign", "bottom", NULL);
466 play_bin->textoverlay_element = overlay;
467 if (play_bin->font_desc) {
468 g_object_set (G_OBJECT (play_bin->textoverlay_element),
469 "font-desc", play_bin->font_desc, NULL);
471 vbin = gen_video_element (play_bin);
473 g_warning ("No overlay (pango) element, subtitles disabled");
476 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
477 element = gst_bin_new ("textbin");
478 gst_element_link_many (csp, overlay, vbin, NULL);
479 gst_bin_add_many (GST_BIN (element), csp, overlay, vbin, NULL);
481 pad = gst_element_get_pad (overlay, "text_sink");
482 #define gst_element_add_ghost_pad(element, pad, name) \
483 gst_element_add_pad (element, gst_ghost_pad_new (name, pad))
484 gst_element_add_ghost_pad (element, pad, "text_sink");
485 gst_object_unref (pad);
487 pad = gst_element_get_pad (csp, "sink");
488 gst_element_add_ghost_pad (element, pad, "sink");
489 gst_object_unref (pad);
494 /* make the element (bin) that contains the elements needed to perform
497 * +-------------------------------------------------------------+
499 * | +---------+ +----------+ +---------+ +---------+ |
500 * | |audioconv| |audioscale| | volume | |audiosink| |
501 * | +-sink src-sink src-sink src-sink | |
502 * | | +---------+ +----------+ +---------+ +---------+ |
504 * +-------------------------------------------------------------+
508 gen_audio_element (GstPlayBin * play_bin)
517 element = g_hash_table_lookup (play_bin->cache, "abin");
518 if (element != NULL) {
521 element = gst_bin_new ("abin");
522 conv = gst_element_factory_make ("audioconvert", "aconv");
523 scale = gst_element_factory_make ("audioscale", "ascale");
525 volume = gst_element_factory_make ("volume", "volume");
526 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
527 play_bin->volume_element = volume;
529 if (play_bin->audio_sink) {
530 sink = play_bin->audio_sink;
532 sink = gst_element_factory_make ("alsasink", "audiosink");
534 g_warning ("could not create autoaudiosink element");
536 play_bin->audio_sink = GST_ELEMENT (gst_object_ref (sink));
539 gst_object_ref (sink);
540 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
542 gst_bin_add (GST_BIN (element), conv);
543 //gst_bin_add (GST_BIN (element), scale);
544 gst_bin_add (GST_BIN (element), volume);
545 gst_bin_add (GST_BIN (element), sink);
547 gst_element_link_pads (conv, "src", /*scale, "sink");
548 gst_element_link_pads (scale, "src", */ volume, "sink");
549 gst_element_link_pads (volume, "src", sink, "sink");
551 pad = gst_element_get_pad (conv, "sink");
552 gst_element_add_ghost_pad (element, pad, "sink");
553 gst_object_unref (pad);
555 gst_element_set_state (element, GST_STATE_READY);
557 /* since we're gonna add it to a bin but don't want to lose it,
558 * we keep a reference. */
559 gst_object_ref (element);
560 g_hash_table_insert (play_bin->cache, "abin", element);
565 /* make the element (bin) that contains the elements needed to perform
566 * visualisation ouput. The idea is to split the audio using tee, then
567 * sending the output to the regular audio bin and the other output to
568 * the vis plugin that transforms it into a video that is rendered with the
569 * normal video bin. The video bin is run in a thread to make sure it does
570 * not block the audio playback pipeline.
572 * +--------------------------------------------------------------------------+
574 * | +------+ +----------------+ |
575 * | | tee | | abin ... | |
576 * | +-sink src-sink | |
577 * | | | | +----------------+ +-------------------+ |
578 * | | | | | vthread | |
579 * | | | | +---------+ +------+ +------+ | +--------------+ | |
580 * | | | | |audioconv| | vis | |vqueue| | | vbin ... | | |
581 * | | | src-sink src-sink src-sink src-sink | | |
582 * | | | | +---------+ +------+ +------+ | +--------------+ | |
583 * | | | | +-------------------+ |
586 +--------------------------------------------------------------------------+
589 gen_vis_element (GstPlayBin * play_bin)
597 GstElement *vqueue, *aqueue;
600 element = gst_bin_new ("visbin");
601 tee = gst_element_factory_make ("tee", "tee");
603 vqueue = gst_element_factory_make ("queue", "vqueue");
604 aqueue = gst_element_factory_make ("queue", "aqueue");
606 asink = gen_audio_element (play_bin);
607 vsink = gen_video_element (play_bin);
609 gst_bin_add (GST_BIN (element), asink);
610 gst_bin_add (GST_BIN (element), vqueue);
611 gst_bin_add (GST_BIN (element), aqueue);
612 gst_bin_add (GST_BIN (element), vsink);
613 gst_bin_add (GST_BIN (element), tee);
615 conv = gst_element_factory_make ("audioconvert", "aconv");
616 if (play_bin->visualisation) {
617 gst_object_ref (play_bin->visualisation);
618 vis = play_bin->visualisation;
620 vis = gst_element_factory_make ("goom", "vis");
623 gst_bin_add (GST_BIN (element), conv);
624 gst_bin_add (GST_BIN (element), vis);
626 gst_element_link_pads (conv, "src", vis, "sink");
627 gst_element_link_pads (vis, "src", vqueue, "sink");
629 gst_element_link_pads (vqueue, "src", vsink, "sink");
631 pad = gst_element_get_pad (aqueue, "sink");
632 rpad = gst_element_get_request_pad (tee, "src%d");
633 gst_pad_link (rpad, pad);
634 gst_object_unref (rpad);
635 gst_object_unref (pad);
636 gst_element_link_pads (aqueue, "src", asink, "sink");
638 pad = gst_element_get_pad (conv, "sink");
639 rpad = gst_element_get_request_pad (tee, "src%d");
640 gst_pad_link (rpad, pad);
641 gst_object_unref (rpad);
642 gst_object_unref (pad);
644 pad = gst_element_get_pad (tee, "sink");
645 gst_element_add_ghost_pad (element, pad, "sink");
646 gst_object_unref (pad);
651 /* get rid of all installed sinks */
653 remove_sinks (GstPlayBin * play_bin)
660 GST_DEBUG ("removesinks");
661 element = g_hash_table_lookup (play_bin->cache, "abin");
662 if (element != NULL) {
663 parent = gst_element_get_parent (element);
664 if (parent != NULL) {
665 /* we remove the element from the parent so that
666 * there is no unwanted state change when the parent
668 play_bin->sinks = g_list_remove (play_bin->sinks, element);
669 gst_element_set_state (element, GST_STATE_NULL);
670 gst_bin_remove (GST_BIN (parent), element);
671 gst_object_unref (parent);
673 pad = gst_element_get_pad (element, "sink");
675 peer = gst_pad_get_peer (pad);
677 gst_pad_unlink (peer, pad);
678 gst_object_unref (peer);
680 gst_object_unref (pad);
683 element = g_hash_table_lookup (play_bin->cache, "vbin");
684 if (element != NULL) {
685 parent = gst_element_get_parent (element);
686 if (parent != NULL) {
687 play_bin->sinks = g_list_remove (play_bin->sinks, element);
688 gst_element_set_state (element, GST_STATE_NULL);
689 gst_bin_remove (GST_BIN (parent), element);
690 gst_object_unref (parent);
692 pad = gst_element_get_pad (element, "sink");
694 peer = gst_pad_get_peer (pad);
696 gst_pad_unlink (peer, pad);
697 gst_object_unref (peer);
699 gst_object_unref (pad);
703 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
704 GstElement *element = GST_ELEMENT (sinks->data);
708 pad = gst_element_get_pad (element, "sink");
710 GST_LOG ("removing sink %p", element);
712 peer = gst_pad_get_peer (pad);
714 gst_pad_unlink (peer, pad);
715 gst_object_unref (peer);
717 gst_object_unref (pad);
719 gst_element_set_state (element, GST_STATE_NULL);
720 gst_bin_remove (GST_BIN (play_bin), element);
722 g_list_free (play_bin->sinks);
723 play_bin->sinks = NULL;
725 /* FIXME: this is probably some refcounting problem */
726 if (play_bin->visualisation && GST_OBJECT_PARENT (play_bin->visualisation)) {
727 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
728 gst_bin_remove (GST_BIN (GST_OBJECT_PARENT (play_bin->visualisation)),
729 play_bin->visualisation);
732 if (play_bin->frame) {
733 gst_buffer_unref (play_bin->frame);
734 play_bin->frame = NULL;
737 play_bin->textoverlay_element = NULL;
740 /* loop over the streams and set up the pipeline to play this
741 * media file. First we count the number of audio and video streams.
742 * If there is no video stream but there exists an audio stream,
743 * we install a visualisation pipeline.
745 * Also make sure to only connect the first audio and video pad. FIXME
746 * this should eventually be handled with a tuner interface so that
747 * one can switch the streams.
750 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
753 GstPadLinkReturn res;
756 gst_bin_add (GST_BIN (play_bin), sink);
758 /* we found a sink for this stream, now try to install it */
759 sinkpad = gst_element_get_pad (sink, "sink");
760 res = gst_pad_link (srcpad, sinkpad);
761 gst_object_unref (sinkpad);
763 /* this is only for debugging */
764 parent = gst_pad_get_parent_element (srcpad);
766 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
767 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
768 gst_object_unref (parent);
771 /* try to link the pad of the sink to the stream */
775 /* could not link this stream */
776 capsstr = gst_caps_to_string (gst_pad_get_caps (srcpad));
777 g_warning ("could not link %s: %d", capsstr, res);
780 gst_element_set_state (sink, GST_STATE_NULL);
781 gst_bin_remove (GST_BIN (play_bin), sink);
783 /* we got the sink succesfully linked, now keep the sink
784 * in out internal list */
785 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
786 gst_element_set_state (sink,
787 (GST_STATE (play_bin) == GST_STATE_PLAYING) ?
788 GST_STATE_PLAYING : GST_STATE_PAUSED);
795 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
797 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
798 GList *streaminfo = NULL, *s;
799 gboolean need_vis = FALSE;
800 gboolean need_text = FALSE;
801 GstPad *textsrcpad = NULL, *textsinkpad = NULL, *pad;
804 /* get rid of existing sinks */
805 if (play_bin->sinks) {
806 remove_sinks (play_bin);
808 GST_DEBUG ("setupsinks");
810 /* find out what to do */
811 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
812 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
814 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
815 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
816 play_bin->visualisation != NULL) {
820 /* now actually connect everything */
821 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
822 for (s = streaminfo; s; s = g_list_next (s)) {
823 GObject *obj = G_OBJECT (s->data);
827 g_object_get (obj, "type", &type, NULL);
828 g_object_get (obj, "object", &object, NULL);
832 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
834 sink = gen_vis_element (play_bin);
836 sink = gen_audio_element (play_bin);
838 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
840 add_sink (play_bin, sink, pad);
841 gst_object_unref (pad);
845 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
847 sink = gen_text_element (play_bin);
849 textsinkpad = gst_element_get_pad (sink, "text_sink");
851 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
853 gst_pad_link (textsrcpad, textsinkpad);
854 gst_object_unref (textsinkpad);
855 gst_object_unref (textsrcpad);
857 sink = gen_video_element (play_bin);
859 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
861 add_sink (play_bin, sink, pad);
862 gst_object_unref (pad);
865 /* remove the sinks now, pipeline get_state will now wait for the
866 * sinks to preroll */
867 if (play_bin->fakesink) {
868 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
869 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
870 play_bin->fakesink = NULL;
874 /* Send an event to our sinks until one of them works; don't then send to the
875 * remaining sinks (unlike GstBin)
878 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
880 GList *sinks = play_bin->sinks;
884 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
886 gst_event_ref (event);
887 if ((res = gst_element_send_event (sink, event)))
890 sinks = g_list_next (sinks);
893 gst_event_unref (event);
899 do_playbin_seek (GstElement * element, GstEvent * event)
904 gboolean was_playing = FALSE;
907 gst_event_parse_seek (event, &rate, NULL, &flags, NULL, NULL, NULL, NULL);
909 flush = flags & GST_SEEK_FLAG_FLUSH;
914 /* need to call _get_state() since a bin state is only updated
916 gst_element_get_state (element, &state, NULL, 0);
917 was_playing = state == GST_STATE_PLAYING;
920 gst_element_set_state (element, GST_STATE_PAUSED);
924 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
927 /* need to reset the stream time to 0 after a flushing seek */
928 gst_pipeline_set_new_stream_time (GST_PIPELINE (element), 0);
930 /* and continue playing */
931 gst_element_set_state (element, GST_STATE_PLAYING);
936 /* We only want to send the event to a single sink (overriding GstBin's
937 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
938 * events appropriately. So, this is a messy duplication of code. */
940 gst_play_bin_send_event (GstElement * element, GstEvent * event)
942 gboolean res = FALSE;
943 GstEventType event_type = GST_EVENT_TYPE (event);
946 switch (event_type) {
948 res = do_playbin_seek (element, event);
951 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
958 static GstStateChangeReturn
959 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
961 GstStateChangeReturn ret;
962 GstPlayBin *play_bin;
964 play_bin = GST_PLAY_BIN (element);
967 switch (transition) {
968 case GST_STATE_CHANGE_READY_TO_PAUSED:
969 /* this really is the easiest way to make the state change return
970 * ASYNC until we added the sinks */
971 if (!play_bin->fakesink) {
972 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
973 gst_bin_add (GST_BIN (play_bin), play_bin->fakesink);
980 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
981 if (ret == GST_STATE_CHANGE_FAILURE)
984 switch (transition) {
985 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
986 /* Set audio sink state to NULL to release the sound device,
987 * but only if we own it (else we might be in chain-transition). */
988 //if (play_bin->audio_sink != NULL &&
989 // GST_STATE (play_bin->audio_sink) == GST_STATE_PAUSED) {
990 // gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
993 case GST_STATE_CHANGE_PAUSED_TO_READY:
994 /* Check for NULL because the state transition may be done by
995 * gst_bin_dispose which is called by gst_play_bin_dispose, and in that
996 * case, we don't want to run remove_sinks.
997 * FIXME: should the NULL test be done in remove_sinks? Should we just
998 * set the state to NULL in gst_play_bin_dispose?
1000 if (play_bin->cache != NULL) {
1001 remove_sinks (play_bin);
1003 if (play_bin->fakesink) {
1004 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1005 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
1006 play_bin->fakesink = NULL;
1017 plugin_init (GstPlugin * plugin)
1019 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1021 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
1025 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1028 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,