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 "gstplaybasebin.h"
29 GST_DEBUG_CATEGORY_STATIC (gst_play_bin_debug);
30 #define GST_CAT_DEFAULT gst_play_bin_debug
32 #define GST_TYPE_PLAY_BIN (gst_play_bin_get_type())
33 #define GST_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAY_BIN,GstPlayBin))
34 #define GST_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAY_BIN,GstPlayBinClass))
35 #define GST_IS_PLAY_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAY_BIN))
36 #define GST_IS_PLAY_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLAY_BIN))
38 #define VOLUME_MAX_DOUBLE 4.0
40 typedef struct _GstPlayBin GstPlayBin;
41 typedef struct _GstPlayBinClass GstPlayBinClass;
45 GstPlayBaseBin parent;
47 /* the configurable elements */
49 GstElement *audio_sink;
50 GstElement *video_sink;
51 GstElement *visualisation;
52 GstElement *volume_element;
53 GstElement *textoverlay_element;
56 /* these are the currently active sinks */
59 /* the last captured frame for snapshots */
62 /* our cache for the sinks */
65 /* font description */
69 struct _GstPlayBinClass
71 GstPlayBaseBinClass parent_class;
92 static void gst_play_bin_class_init (GstPlayBinClass * klass);
93 static void gst_play_bin_init (GstPlayBin * play_bin);
94 static void gst_play_bin_dispose (GObject * object);
96 static void setup_sinks (GstPlayBaseBin * play_base_bin,
97 GstPlayBaseGroup * group);
98 static void remove_sinks (GstPlayBin * play_bin);
100 static void gst_play_bin_set_property (GObject * object, guint prop_id,
101 const GValue * value, GParamSpec * spec);
102 static void gst_play_bin_get_property (GObject * object, guint prop_id,
103 GValue * value, GParamSpec * spec);
104 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
105 GstStateChange transition);
107 static GstElementClass *parent_class;
109 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
111 static GstElementDetails gst_play_bin_details = {
113 "Generic/Bin/Player",
114 "Autoplug and play media from an uri",
115 "Wim Taymans <wim@fluendo.com>"
119 gst_play_bin_get_type (void)
121 static GType gst_play_bin_type = 0;
123 if (!gst_play_bin_type) {
124 static const GTypeInfo gst_play_bin_info = {
125 sizeof (GstPlayBinClass),
128 (GClassInitFunc) gst_play_bin_class_init,
133 (GInstanceInitFunc) gst_play_bin_init,
137 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
138 "GstPlayBin", &gst_play_bin_info, 0);
141 return gst_play_bin_type;
145 gst_play_bin_class_init (GstPlayBinClass * klass)
147 GObjectClass *gobject_klass;
148 GstElementClass *gstelement_klass;
149 GstBinClass *gstbin_klass;
150 GstPlayBaseBinClass *playbasebin_klass;
152 gobject_klass = (GObjectClass *) klass;
153 gstelement_klass = (GstElementClass *) klass;
154 gstbin_klass = (GstBinClass *) klass;
155 playbasebin_klass = (GstPlayBaseBinClass *) klass;
157 parent_class = g_type_class_ref (gst_play_base_bin_get_type ());
159 gobject_klass->set_property = gst_play_bin_set_property;
160 gobject_klass->get_property = gst_play_bin_get_property;
162 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
163 g_param_spec_object ("video-sink", "Video Sink",
164 "the video output element to use (NULL = default sink)",
165 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
166 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
167 g_param_spec_object ("audio-sink", "Audio Sink",
168 "the audio output element to use (NULL = default sink)",
169 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
170 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
171 g_param_spec_object ("vis-plugin", "Vis plugin",
172 "the visualization element to use (NULL = none)",
173 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
174 g_object_class_install_property (gobject_klass, ARG_VOLUME,
175 g_param_spec_double ("volume", "volume", "volume",
176 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
177 g_object_class_install_property (gobject_klass, ARG_FRAME,
178 gst_param_spec_mini_object ("frame", "Frame",
179 "The last frame (NULL = no video available)",
180 GST_TYPE_BUFFER, G_PARAM_READABLE));
181 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
182 g_param_spec_string ("subtitle-font-desc",
183 "Subtitle font description",
184 "Pango font description of font "
185 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
187 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
189 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
191 gstelement_klass->change_state =
192 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
194 playbasebin_klass->setup_output_pads = setup_sinks;
198 gst_play_bin_init (GstPlayBin * play_bin)
200 play_bin->video_sink = NULL;
201 play_bin->audio_sink = NULL;
202 play_bin->visualisation = NULL;
203 play_bin->volume_element = NULL;
204 play_bin->textoverlay_element = NULL;
205 play_bin->volume = 1.0;
206 play_bin->sinks = NULL;
207 play_bin->frame = NULL;
208 play_bin->font_desc = NULL;
209 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
210 NULL, (GDestroyNotify) gst_object_unref);
214 gst_play_bin_dispose (GObject * object)
216 GstPlayBin *play_bin;
218 play_bin = GST_PLAY_BIN (object);
220 if (play_bin->cache != NULL) {
221 remove_sinks (play_bin);
222 g_hash_table_destroy (play_bin->cache);
223 play_bin->cache = NULL;
226 if (play_bin->audio_sink != NULL) {
227 gst_object_unref (play_bin->audio_sink);
228 play_bin->audio_sink = NULL;
230 if (play_bin->video_sink != NULL) {
231 gst_object_unref (play_bin->video_sink);
232 play_bin->video_sink = NULL;
234 if (play_bin->visualisation != NULL) {
235 gst_object_unref (play_bin->visualisation);
236 play_bin->visualisation = NULL;
238 g_free (play_bin->font_desc);
239 play_bin->font_desc = NULL;
241 G_OBJECT_CLASS (parent_class)->dispose (object);
246 gst_play_bin_set_property (GObject * object, guint prop_id,
247 const GValue * value, GParamSpec * pspec)
249 GstPlayBin *play_bin;
251 g_return_if_fail (GST_IS_PLAY_BIN (object));
253 play_bin = GST_PLAY_BIN (object);
257 if (play_bin->video_sink != NULL) {
258 gst_object_unref (play_bin->video_sink);
260 play_bin->video_sink = g_value_get_object (value);
261 if (play_bin->video_sink != NULL) {
262 gst_object_ref (play_bin->video_sink);
263 gst_object_sink (GST_OBJECT (play_bin->video_sink));
265 /* when changing the videosink, we just remove the
266 * video pipeline from the cache so that it will be
267 * regenerated with the new sink element */
268 g_hash_table_remove (play_bin->cache, "vbin");
271 if (play_bin->audio_sink != NULL) {
272 gst_object_unref (play_bin->audio_sink);
274 play_bin->audio_sink = g_value_get_object (value);
275 if (play_bin->audio_sink != NULL) {
276 gst_object_ref (play_bin->audio_sink);
277 gst_object_sink (GST_OBJECT (play_bin->audio_sink));
279 g_hash_table_remove (play_bin->cache, "abin");
282 if (play_bin->visualisation != NULL) {
283 gst_object_unref (play_bin->visualisation);
285 play_bin->visualisation = g_value_get_object (value);
286 if (play_bin->visualisation != NULL) {
287 gst_object_ref (play_bin->visualisation);
288 gst_object_sink (GST_OBJECT (play_bin->visualisation));
292 play_bin->volume = g_value_get_double (value);
293 if (play_bin->volume_element) {
294 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
295 play_bin->volume, NULL);
299 g_free (play_bin->font_desc);
300 play_bin->font_desc = g_strdup (g_value_get_string (value));
301 if (play_bin->textoverlay_element) {
302 g_object_set (G_OBJECT (play_bin->textoverlay_element),
303 "font-desc", g_value_get_string (value), NULL);
307 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
313 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
316 GstPlayBin *play_bin;
318 g_return_if_fail (GST_IS_PLAY_BIN (object));
320 play_bin = GST_PLAY_BIN (object);
324 g_value_set_object (value, play_bin->video_sink);
327 g_value_set_object (value, play_bin->audio_sink);
330 g_value_set_object (value, play_bin->visualisation);
333 g_value_set_double (value, play_bin->volume);
336 gst_value_set_mini_object (value, GST_MINI_OBJECT (play_bin->frame));
339 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
344 /* signal fired when the identity has received a new buffer. This is used for
345 * making screenshots.
348 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
350 GstPlayBin *play_bin = GST_PLAY_BIN (data);
352 if (play_bin->frame) {
353 gst_buffer_unref (play_bin->frame);
355 play_bin->frame = gst_buffer_ref (frame);
358 /* make the element (bin) that contains the elements needed to perform
359 * video display. We connect a handoff signal to identity so that we
360 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
362 * +-------------------------------------------------------------+
364 * | +--------+ +----------+ +----------+ +---------+ |
365 * | |identity| |colorspace| |videoscale| |videosink| |
366 * | +-sink src-sink src-sink src-sink | |
367 * | | +---+----+ +----------+ +----------+ +---------+ |
369 * +----------|--------------------------------------------------+
373 gen_video_element (GstPlayBin * play_bin)
380 GstElement *identity;
383 /* first see if we have it in the cache */
384 element = g_hash_table_lookup (play_bin->cache, "vbin");
385 if (element != NULL) {
389 element = gst_bin_new ("vbin");
390 identity = gst_element_factory_make ("identity", "id");
391 g_object_set (identity, "silent", TRUE, NULL);
392 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
393 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
394 scale = gst_element_factory_make ("videoscale", "vscale");
395 if (play_bin->video_sink) {
396 sink = play_bin->video_sink;
398 sink = gst_element_factory_make ("autovideosink", "videosink");
400 g_warning ("could not create autovideosink element");
403 gst_object_ref (sink);
404 g_hash_table_insert (play_bin->cache, "video_sink", sink);
406 gst_bin_add (GST_BIN (element), identity);
407 gst_bin_add (GST_BIN (element), conv);
408 gst_bin_add (GST_BIN (element), scale);
409 gst_bin_add (GST_BIN (element), sink);
410 gst_element_link_pads (identity, "src", conv, "sink");
411 gst_element_link_pads (conv, "src", scale, "sink");
412 gst_element_link_pads (scale, "src", sink, "sink");
414 pad = gst_element_get_pad (identity, "sink");
415 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
416 gst_object_unref (pad);
418 gst_element_set_state (element, GST_STATE_READY);
420 /* since we're gonna add it to a bin but don't want to lose it,
421 * we keep a reference. */
422 gst_object_ref (element);
423 g_hash_table_insert (play_bin->cache, "vbin", element);
428 /* make an element for playback of video with subtitles embedded.
430 * +--------------------------------------------------+
431 * | tbin +-------------+ |
432 * | +-----+ | textoverlay | +------+ |
433 * | | csp | +--video_sink | | vbin | |
434 * video_sink-sink src+ +-text_sink src-sink | |
435 * | +-----+ | +-------------+ +------+ |
436 * text_sink-------------+ |
437 * +--------------------------------------------------+
441 gen_text_element (GstPlayBin * play_bin)
443 GstElement *element, *csp, *overlay, *vbin;
446 overlay = gst_element_factory_make ("textoverlay", "overlay");
447 g_object_set (G_OBJECT (overlay),
448 "halign", "center", "valign", "bottom", NULL);
449 play_bin->textoverlay_element = overlay;
450 if (play_bin->font_desc) {
451 g_object_set (G_OBJECT (play_bin->textoverlay_element),
452 "font-desc", play_bin->font_desc, NULL);
454 vbin = gen_video_element (play_bin);
456 g_warning ("No overlay (pango) element, subtitles disabled");
459 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
460 element = gst_bin_new ("textbin");
461 gst_element_link_many (csp, overlay, vbin, NULL);
462 gst_bin_add_many (GST_BIN (element), csp, overlay, vbin, NULL);
464 pad = gst_element_get_pad (overlay, "text_sink");
465 #define gst_element_add_ghost_pad(element, pad, name) \
466 gst_element_add_pad (element, gst_ghost_pad_new (name, pad))
467 gst_element_add_ghost_pad (element, pad, "text_sink");
468 gst_object_unref (pad);
470 pad = gst_element_get_pad (csp, "sink");
471 gst_element_add_ghost_pad (element, pad, "sink");
472 gst_object_unref (pad);
477 /* make the element (bin) that contains the elements needed to perform
480 * +-------------------------------------------------------------+
482 * | +---------+ +----------+ +---------+ +---------+ |
483 * | |audioconv| |audioscale| | volume | |audiosink| |
484 * | +-sink src-sink src-sink src-sink | |
485 * | | +---------+ +----------+ +---------+ +---------+ |
487 * +-------------------------------------------------------------+
491 gen_audio_element (GstPlayBin * play_bin)
500 element = g_hash_table_lookup (play_bin->cache, "abin");
501 if (element != NULL) {
504 element = gst_bin_new ("abin");
505 conv = gst_element_factory_make ("audioconvert", "aconv");
506 scale = gst_element_factory_make ("audioscale", "ascale");
508 volume = gst_element_factory_make ("volume", "volume");
509 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
510 play_bin->volume_element = volume;
512 if (play_bin->audio_sink) {
513 sink = play_bin->audio_sink;
515 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
517 g_warning ("could not create autoaudiosink element");
519 play_bin->audio_sink = GST_ELEMENT (gst_object_ref (sink));
522 gst_object_ref (sink);
523 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
525 gst_bin_add (GST_BIN (element), conv);
526 //gst_bin_add (GST_BIN (element), scale);
527 gst_bin_add (GST_BIN (element), volume);
528 gst_bin_add (GST_BIN (element), sink);
530 gst_element_link_pads (conv, "src", /*scale, "sink");
531 gst_element_link_pads (scale, "src", */ volume, "sink");
532 gst_element_link_pads (volume, "src", sink, "sink");
534 pad = gst_element_get_pad (conv, "sink");
535 gst_element_add_ghost_pad (element, pad, "sink");
536 gst_object_unref (pad);
538 gst_element_set_state (element, GST_STATE_READY);
540 /* since we're gonna add it to a bin but don't want to lose it,
541 * we keep a reference. */
542 gst_object_ref (element);
543 g_hash_table_insert (play_bin->cache, "abin", element);
548 /* make the element (bin) that contains the elements needed to perform
549 * visualisation ouput. The idea is to split the audio using tee, then
550 * sending the output to the regular audio bin and the other output to
551 * the vis plugin that transforms it into a video that is rendered with the
552 * normal video bin. The video bin is run in a thread to make sure it does
553 * not block the audio playback pipeline.
555 * +--------------------------------------------------------------------------+
557 * | +------+ +----------------+ |
558 * | | tee | | abin ... | |
559 * | +-sink src-sink | |
560 * | | | | +----------------+ +-------------------+ |
561 * | | | | | vthread | |
562 * | | | | +---------+ +------+ +------+ | +--------------+ | |
563 * | | | | |audioconv| | vis | |vqueue| | | vbin ... | | |
564 * | | | src-sink src-sink src-sink src-sink | | |
565 * | | | | +---------+ +------+ +------+ | +--------------+ | |
566 * | | | | +-------------------+ |
569 +--------------------------------------------------------------------------+
572 gen_vis_element (GstPlayBin * play_bin)
580 GstElement *vqueue, *aqueue;
583 element = gst_bin_new ("visbin");
584 tee = gst_element_factory_make ("tee", "tee");
586 vqueue = gst_element_factory_make ("queue", "vqueue");
587 aqueue = gst_element_factory_make ("queue", "aqueue");
589 asink = gen_audio_element (play_bin);
590 vsink = gen_video_element (play_bin);
592 gst_bin_add (GST_BIN (element), asink);
593 gst_bin_add (GST_BIN (element), vqueue);
594 gst_bin_add (GST_BIN (element), aqueue);
595 gst_bin_add (GST_BIN (element), vsink);
596 gst_bin_add (GST_BIN (element), tee);
598 conv = gst_element_factory_make ("audioconvert", "aconv");
599 if (play_bin->visualisation) {
600 gst_object_ref (play_bin->visualisation);
601 vis = play_bin->visualisation;
603 vis = gst_element_factory_make ("goom", "vis");
606 gst_bin_add (GST_BIN (element), conv);
607 gst_bin_add (GST_BIN (element), vis);
609 gst_element_link_pads (conv, "src", vis, "sink");
610 gst_element_link_pads (vis, "src", vqueue, "sink");
612 gst_element_link_pads (vqueue, "src", vsink, "sink");
614 pad = gst_element_get_pad (aqueue, "sink");
615 rpad = gst_element_get_request_pad (tee, "src%d");
616 gst_pad_link (rpad, pad);
617 gst_object_unref (rpad);
618 gst_object_unref (pad);
619 gst_element_link_pads (aqueue, "src", asink, "sink");
621 pad = gst_element_get_pad (conv, "sink");
622 rpad = gst_element_get_request_pad (tee, "src%d");
623 gst_pad_link (rpad, pad);
624 gst_object_unref (rpad);
625 gst_object_unref (pad);
627 pad = gst_element_get_pad (tee, "sink");
628 gst_element_add_ghost_pad (element, pad, "sink");
629 gst_object_unref (pad);
634 /* get rid of all installed sinks */
636 remove_sinks (GstPlayBin * play_bin)
643 GST_DEBUG ("removesinks");
644 element = g_hash_table_lookup (play_bin->cache, "abin");
645 if (element != NULL) {
646 parent = gst_element_get_parent (element);
647 if (parent != NULL) {
648 /* we remove the element from the parent so that
649 * there is no unwanted state change when the parent
651 play_bin->sinks = g_list_remove (play_bin->sinks, element);
652 gst_bin_remove (GST_BIN (parent), element);
653 gst_object_unref (parent);
655 pad = gst_element_get_pad (element, "sink");
657 peer = gst_pad_get_peer (pad);
659 gst_pad_unlink (peer, pad);
660 gst_object_unref (peer);
662 gst_object_unref (pad);
665 element = g_hash_table_lookup (play_bin->cache, "vbin");
666 if (element != NULL) {
667 parent = gst_element_get_parent (element);
668 if (parent != NULL) {
669 play_bin->sinks = g_list_remove (play_bin->sinks, element);
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);
684 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
685 GstElement *element = GST_ELEMENT (sinks->data);
689 pad = gst_element_get_pad (element, "sink");
691 GST_LOG ("removing sink %p", element);
693 peer = gst_pad_get_peer (pad);
695 gst_pad_unlink (peer, pad);
696 gst_object_unref (peer);
698 gst_object_unref (pad);
700 gst_bin_remove (GST_BIN (play_bin), element);
702 g_list_free (play_bin->sinks);
703 play_bin->sinks = NULL;
705 /* FIXME: this is probably some refcounting problem */
706 if (play_bin->visualisation && GST_OBJECT_PARENT (play_bin->visualisation)) {
707 gst_bin_remove (GST_BIN (GST_OBJECT_PARENT (play_bin->visualisation)),
708 play_bin->visualisation);
709 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
712 if (play_bin->frame) {
713 gst_buffer_unref (play_bin->frame);
714 play_bin->frame = NULL;
717 play_bin->textoverlay_element = NULL;
720 /* loop over the streams and set up the pipeline to play this
721 * media file. First we count the number of audio and video streams.
722 * If there is no video stream but there exists an audio stream,
723 * we install a visualisation pipeline.
725 * Also make sure to only connect the first audio and video pad. FIXME
726 * this should eventually be handled with a tuner interface so that
727 * one can switch the streams.
730 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
733 GstPadLinkReturn res;
736 gst_bin_add (GST_BIN (play_bin), sink);
738 /* we found a sink for this stream, now try to install it */
739 sinkpad = gst_element_get_pad (sink, "sink");
740 res = gst_pad_link (srcpad, sinkpad);
741 gst_object_unref (sinkpad);
743 /* this is only for debugging */
744 parent = gst_pad_get_parent_element (srcpad);
746 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
747 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
748 gst_object_unref (parent);
751 /* try to link the pad of the sink to the stream */
755 /* could not link this stream */
756 capsstr = gst_caps_to_string (gst_pad_get_caps (srcpad));
757 g_warning ("could not link %s: %d", capsstr, res);
760 gst_bin_remove (GST_BIN (play_bin), sink);
762 /* we got the sink succesfully linked, now keep the sink
763 * in out internal list */
764 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
765 gst_element_set_state (sink,
766 (GST_STATE (play_bin) == GST_STATE_PLAYING) ?
767 GST_STATE_PLAYING : GST_STATE_PAUSED);
774 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
776 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
777 GList *streaminfo = NULL, *s;
778 gboolean need_vis = FALSE;
779 gboolean need_text = FALSE;
780 GstPad *textsrcpad = NULL, *textsinkpad = NULL, *pad;
783 /* get rid of existing sinks */
784 if (play_bin->sinks) {
785 remove_sinks (play_bin);
787 GST_DEBUG ("setupsinks");
789 /* find out what to do */
790 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
791 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
793 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
794 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
795 play_bin->visualisation != NULL) {
799 /* now actually connect everything */
800 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
801 for (s = streaminfo; s; s = g_list_next (s)) {
802 GObject *obj = G_OBJECT (s->data);
806 g_object_get (obj, "type", &type, NULL);
807 g_object_get (obj, "object", &object, NULL);
811 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
813 sink = gen_vis_element (play_bin);
815 sink = gen_audio_element (play_bin);
817 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
819 add_sink (play_bin, sink, pad);
820 gst_object_unref (pad);
824 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
826 sink = gen_text_element (play_bin);
828 textsinkpad = gst_element_get_pad (sink, "text_sink");
830 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
832 gst_pad_link (textsrcpad, textsinkpad);
833 gst_object_unref (textsinkpad);
834 gst_object_unref (textsrcpad);
836 sink = gen_video_element (play_bin);
838 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
840 add_sink (play_bin, sink, pad);
841 gst_object_unref (pad);
844 /* remove the sinks now, pipeline get_state will now wait for the
845 * sinks to preroll */
846 if (play_bin->fakesink) {
847 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
848 play_bin->fakesink = NULL;
852 static GstStateChangeReturn
853 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
855 GstStateChangeReturn ret;
856 GstPlayBin *play_bin;
858 play_bin = GST_PLAY_BIN (element);
861 switch (transition) {
862 case GST_STATE_CHANGE_READY_TO_PAUSED:
863 /* this really is the easiest way to make the state change return
864 * ASYNC until we added the sinks */
865 if (!play_bin->fakesink) {
866 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
867 gst_bin_add (GST_BIN (play_bin), play_bin->fakesink);
874 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
875 if (ret == GST_STATE_CHANGE_FAILURE)
878 switch (transition) {
879 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
880 /* Set audio sink state to NULL to release the sound device,
881 * but only if we own it (else we might be in chain-transition). */
882 //if (play_bin->audio_sink != NULL &&
883 // GST_STATE (play_bin->audio_sink) == GST_STATE_PAUSED) {
884 // gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
887 case GST_STATE_CHANGE_PAUSED_TO_READY:
888 /* Check for NULL because the state transition may be done by
889 * gst_bin_dispose which is called by gst_play_bin_dispose, and in that
890 * case, we don't want to run remove_sinks.
891 * FIXME: should the NULL test be done in remove_sinks? Should we just
892 * set the state to NULL in gst_play_bin_dispose?
894 if (play_bin->cache != NULL) {
895 remove_sinks (play_bin);
897 if (play_bin->fakesink) {
898 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
899 play_bin->fakesink = NULL;
910 plugin_init (GstPlugin * plugin)
912 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
914 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
918 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
921 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)