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 GstElementStateReturn gst_play_bin_change_state (GstElement * element);
106 static GstElementClass *parent_class;
108 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
110 static GstElementDetails gst_play_bin_details = {
112 "Generic/Bin/Player",
113 "Autoplug and play media from an uri",
114 "Wim Taymans <wim@fluendo.com>"
118 gst_play_bin_get_type (void)
120 static GType gst_play_bin_type = 0;
122 if (!gst_play_bin_type) {
123 static const GTypeInfo gst_play_bin_info = {
124 sizeof (GstPlayBinClass),
127 (GClassInitFunc) gst_play_bin_class_init,
132 (GInstanceInitFunc) gst_play_bin_init,
136 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
137 "GstPlayBin", &gst_play_bin_info, 0);
140 return gst_play_bin_type;
144 gst_play_bin_class_init (GstPlayBinClass * klass)
146 GObjectClass *gobject_klass;
147 GstElementClass *gstelement_klass;
148 GstBinClass *gstbin_klass;
149 GstPlayBaseBinClass *playbasebin_klass;
151 gobject_klass = (GObjectClass *) klass;
152 gstelement_klass = (GstElementClass *) klass;
153 gstbin_klass = (GstBinClass *) klass;
154 playbasebin_klass = (GstPlayBaseBinClass *) klass;
156 parent_class = g_type_class_ref (gst_play_base_bin_get_type ());
158 gobject_klass->set_property = gst_play_bin_set_property;
159 gobject_klass->get_property = gst_play_bin_get_property;
161 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
162 g_param_spec_object ("video-sink", "Video Sink",
163 "the video output element to use (NULL = default sink)",
164 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
165 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
166 g_param_spec_object ("audio-sink", "Audio Sink",
167 "the audio output element to use (NULL = default sink)",
168 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
169 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
170 g_param_spec_object ("vis-plugin", "Vis plugin",
171 "the visualization element to use (NULL = none)",
172 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
173 g_object_class_install_property (gobject_klass, ARG_VOLUME,
174 g_param_spec_double ("volume", "volume", "volume",
175 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
176 g_object_class_install_property (gobject_klass, ARG_FRAME,
177 gst_param_spec_mini_object ("frame", "Frame",
178 "The last frame (NULL = no video available)",
179 GST_TYPE_BUFFER, G_PARAM_READABLE));
180 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
181 g_param_spec_string ("subtitle-font-desc",
182 "Subtitle font description",
183 "Pango font description of font "
184 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
186 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
188 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
190 gstelement_klass->change_state =
191 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
193 playbasebin_klass->setup_output_pads = setup_sinks;
197 gst_play_bin_init (GstPlayBin * play_bin)
199 play_bin->video_sink = NULL;
200 play_bin->audio_sink = NULL;
201 play_bin->visualisation = NULL;
202 play_bin->volume_element = NULL;
203 play_bin->textoverlay_element = NULL;
204 play_bin->volume = 1.0;
205 play_bin->sinks = NULL;
206 play_bin->frame = NULL;
207 play_bin->font_desc = NULL;
208 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
209 NULL, (GDestroyNotify) gst_object_unref);
213 gst_play_bin_dispose (GObject * object)
215 GstPlayBin *play_bin;
217 play_bin = GST_PLAY_BIN (object);
219 if (play_bin->cache != NULL) {
220 remove_sinks (play_bin);
221 g_hash_table_destroy (play_bin->cache);
222 play_bin->cache = NULL;
225 if (play_bin->audio_sink != NULL) {
226 gst_object_unref (GST_OBJECT (play_bin->audio_sink));
227 play_bin->audio_sink = NULL;
229 if (play_bin->video_sink != NULL) {
230 gst_object_unref (GST_OBJECT (play_bin->video_sink));
231 play_bin->video_sink = NULL;
233 if (play_bin->visualisation != NULL) {
234 gst_object_unref (GST_OBJECT (play_bin->visualisation));
235 play_bin->visualisation = NULL;
237 g_free (play_bin->font_desc);
238 play_bin->font_desc = NULL;
240 if (G_OBJECT_CLASS (parent_class)->dispose) {
241 G_OBJECT_CLASS (parent_class)->dispose (object);
247 gst_play_bin_set_property (GObject * object, guint prop_id,
248 const GValue * value, GParamSpec * pspec)
250 GstPlayBin *play_bin;
252 g_return_if_fail (GST_IS_PLAY_BIN (object));
254 play_bin = GST_PLAY_BIN (object);
258 if (play_bin->video_sink != NULL) {
259 gst_object_unref (GST_OBJECT (play_bin->video_sink));
261 play_bin->video_sink = g_value_get_object (value);
262 if (play_bin->video_sink != NULL) {
263 gst_object_ref (GST_OBJECT (play_bin->video_sink));
264 gst_object_sink (GST_OBJECT (play_bin->video_sink));
266 /* when changing the videosink, we just remove the
267 * video pipeline from the cache so that it will be
268 * regenerated with the new sink element */
269 g_hash_table_remove (play_bin->cache, "vbin");
272 if (play_bin->audio_sink != NULL) {
273 gst_object_unref (GST_OBJECT (play_bin->audio_sink));
275 play_bin->audio_sink = g_value_get_object (value);
276 if (play_bin->audio_sink != NULL) {
277 gst_object_ref (GST_OBJECT (play_bin->audio_sink));
278 gst_object_sink (GST_OBJECT (play_bin->audio_sink));
280 g_hash_table_remove (play_bin->cache, "abin");
283 if (play_bin->visualisation != NULL) {
284 gst_object_unref (GST_OBJECT (play_bin->visualisation));
286 play_bin->visualisation = g_value_get_object (value);
287 if (play_bin->visualisation != NULL) {
288 gst_object_ref (GST_OBJECT (play_bin->visualisation));
289 gst_object_sink (GST_OBJECT (play_bin->visualisation));
293 play_bin->volume = g_value_get_double (value);
294 if (play_bin->volume_element) {
295 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
296 play_bin->volume, NULL);
300 g_free (play_bin->font_desc);
301 play_bin->font_desc = g_strdup (g_value_get_string (value));
302 if (play_bin->textoverlay_element) {
303 g_object_set (G_OBJECT (play_bin->textoverlay_element),
304 "font-desc", g_value_get_string (value), NULL);
308 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
314 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
317 GstPlayBin *play_bin;
319 g_return_if_fail (GST_IS_PLAY_BIN (object));
321 play_bin = GST_PLAY_BIN (object);
325 g_value_set_object (value, play_bin->video_sink);
328 g_value_set_object (value, play_bin->audio_sink);
331 g_value_set_object (value, play_bin->visualisation);
334 g_value_set_double (value, play_bin->volume);
337 g_value_set_boxed (value, play_bin->frame);
340 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
345 /* signal fired when the identity has received a new buffer. This is used for
346 * making screenshots.
349 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
351 GstPlayBin *play_bin = GST_PLAY_BIN (data);
353 if (play_bin->frame) {
354 gst_buffer_unref (play_bin->frame);
356 play_bin->frame = gst_buffer_ref (frame);
359 /* make the element (bin) that contains the elements needed to perform
360 * video display. We connect a handoff signal to identity so that we
361 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
363 * +-------------------------------------------------------------+
365 * | +--------+ +----------+ +----------+ +---------+ |
366 * | |identity| |colorspace| |videoscale| |videosink| |
367 * | +-sink src-sink src-sink src-sink | |
368 * | | +---+----+ +----------+ +----------+ +---------+ |
370 * +----------|--------------------------------------------------+
374 gen_video_element (GstPlayBin * play_bin)
381 GstElement *identity;
384 /* first see if we have it in the cache */
385 element = g_hash_table_lookup (play_bin->cache, "vbin");
386 if (element != NULL) {
390 element = gst_bin_new ("vbin");
391 identity = gst_element_factory_make ("identity", "id");
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 ("xvimagesink", "videosink");
400 gst_object_ref (GST_OBJECT (sink));
401 g_hash_table_insert (play_bin->cache, "video_sink", sink);
403 gst_bin_add (GST_BIN (element), identity);
404 gst_bin_add (GST_BIN (element), conv);
405 //gst_bin_add (GST_BIN (element), scale);
406 gst_bin_add (GST_BIN (element), sink);
407 gst_element_link_pads (identity, "src", conv, "sink");
408 gst_element_link_pads (conv, "src", /*scale, "sink");
409 gst_element_link_pads (scale, "src", */ sink, "sink");
411 pad = gst_element_get_pad (identity, "sink");
412 gst_element_add_ghost_pad (element, pad, "sink");
413 g_object_unref (G_OBJECT (pad));
415 gst_element_set_state (element, GST_STATE_READY);
417 /* since we're gonna add it to a bin but don't want to lose it,
418 * we keep a reference. */
419 gst_object_ref (GST_OBJECT (element));
420 g_hash_table_insert (play_bin->cache, "vbin", element);
425 /* make an element for playback of video with subtitles embedded.
427 * +--------------------------------------------------+
428 * | tbin +-------------+ |
429 * | +-----+ | textoverlay | +------+ |
430 * | | csp | +--video_sink | | vbin | |
431 * video_sink-sink src+ +-text_sink src-sink | |
432 * | +-----+ | +-------------+ +------+ |
433 * text_sink-------------+ |
434 * +--------------------------------------------------+
438 gen_text_element (GstPlayBin * play_bin)
440 GstElement *element, *csp, *overlay, *vbin;
443 overlay = gst_element_factory_make ("textoverlay", "overlay");
444 g_object_set (G_OBJECT (overlay),
445 "halign", "center", "valign", "bottom", NULL);
446 play_bin->textoverlay_element = overlay;
447 if (play_bin->font_desc) {
448 g_object_set (G_OBJECT (play_bin->textoverlay_element),
449 "font-desc", play_bin->font_desc, NULL);
451 vbin = gen_video_element (play_bin);
453 g_warning ("No overlay (pango) element, subtitles disabled");
456 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
457 element = gst_bin_new ("textbin");
458 gst_element_link_many (csp, overlay, vbin, NULL);
459 gst_bin_add_many (GST_BIN (element), csp, overlay, vbin, NULL);
461 pad = gst_element_get_pad (overlay, "text_sink");
462 gst_element_add_ghost_pad (element, pad, "text_sink");
463 g_object_unref (G_OBJECT (pad));
465 pad = gst_element_get_pad (csp, "sink");
466 gst_element_add_ghost_pad (element, pad, "sink");
467 g_object_unref (G_OBJECT (pad));
472 /* make the element (bin) that contains the elements needed to perform
475 * +-------------------------------------------------------------+
477 * | +---------+ +----------+ +---------+ +---------+ |
478 * | |audioconv| |audioscale| | volume | |audiosink| |
479 * | +-sink src-sink src-sink src-sink | |
480 * | | +---------+ +----------+ +---------+ +---------+ |
482 * +-------------------------------------------------------------+
486 gen_audio_element (GstPlayBin * play_bin)
495 element = g_hash_table_lookup (play_bin->cache, "abin");
496 if (element != NULL) {
499 element = gst_bin_new ("abin");
500 conv = gst_element_factory_make ("audioconvert", "aconv");
501 scale = gst_element_factory_make ("audioscale", "ascale");
503 volume = gst_element_factory_make ("volume", "volume");
504 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
505 play_bin->volume_element = volume;
507 if (play_bin->audio_sink) {
508 sink = play_bin->audio_sink;
510 sink = gst_element_factory_make ("alsasink", "audiosink");
511 play_bin->audio_sink = GST_ELEMENT (gst_object_ref (GST_OBJECT (sink)));
514 gst_object_ref (GST_OBJECT (sink));
515 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
517 gst_bin_add (GST_BIN (element), conv);
518 //gst_bin_add (GST_BIN (element), scale);
519 //gst_bin_add (GST_BIN (element), volume);
520 gst_bin_add (GST_BIN (element), sink);
522 gst_element_link_pads (conv, "src", /*scale, "sink");
523 gst_element_link_pads (scale, "src", volume, "sink");
524 gst_element_link_pads (volume, "src", */ sink, "sink");
526 pad = gst_element_get_pad (conv, "sink");
527 gst_element_add_ghost_pad (element, pad, "sink");
528 g_object_unref (G_OBJECT (pad));
530 gst_element_set_state (element, GST_STATE_READY);
532 /* since we're gonna add it to a bin but don't want to lose it,
533 * we keep a reference. */
534 gst_object_ref (GST_OBJECT (element));
535 g_hash_table_insert (play_bin->cache, "abin", element);
540 /* make the element (bin) that contains the elements needed to perform
541 * visualisation ouput. The idea is to split the audio using tee, then
542 * sending the output to the regular audio bin and the other output to
543 * the vis plugin that transforms it into a video that is rendered with the
544 * normal video bin. The video bin is run in a thread to make sure it does
545 * not block the audio playback pipeline.
547 * +--------------------------------------------------------------------------+
549 * | +------+ +----------------+ |
550 * | | tee | | abin ... | |
551 * | +-sink src-sink | |
552 * | | | | +----------------+ +-------------------+ |
553 * | | | | | vthread | |
554 * | | | | +---------+ +------+ +------+ | +--------------+ | |
555 * | | | | |audioconv| | vis | |vqueue| | | vbin ... | | |
556 * | | | src-sink src-sink src-sink src-sink | | |
557 * | | | | +---------+ +------+ +------+ | +--------------+ | |
558 * | | | | +-------------------+ |
561 +--------------------------------------------------------------------------+
564 gen_vis_element (GstPlayBin * play_bin)
576 element = gst_bin_new ("visbin");
577 tee = gst_element_factory_make ("tee", "tee");
579 vqueue = gst_element_factory_make ("queue", "vqueue");
580 vthread = gst_element_factory_make ("thread", "vthread");
582 asink = gen_audio_element (play_bin);
583 vsink = gen_video_element (play_bin);
585 gst_bin_add (GST_BIN (element), asink);
586 gst_bin_add (GST_BIN (element), vqueue);
587 gst_bin_add (GST_BIN (vthread), vsink);
588 gst_bin_add (GST_BIN (element), vthread);
589 gst_bin_add (GST_BIN (element), tee);
591 conv = gst_element_factory_make ("audioconvert", "aconv");
592 if (play_bin->visualisation) {
593 gst_object_ref (GST_OBJECT (play_bin->visualisation));
594 vis = play_bin->visualisation;
596 vis = gst_element_factory_make ("goom", "vis");
599 gst_bin_add (GST_BIN (element), conv);
600 gst_bin_add (GST_BIN (element), vis);
602 gst_element_link_pads (conv, "src", vis, "sink");
603 gst_element_link_pads (vis, "src", vqueue, "sink");
605 gst_element_link_pads (vqueue, "src", vsink, "sink");
607 pad = gst_element_get_pad (asink, "sink");
608 gst_pad_link (gst_element_get_request_pad (tee, "src%d"), pad);
609 g_object_unref (G_OBJECT (pad));
611 pad = gst_element_get_pad (conv, "sink");
612 gst_pad_link (gst_element_get_request_pad (tee, "src%d"), pad);
613 g_object_unref (G_OBJECT (pad));
615 pad = gst_element_get_pad (tee, "sink");
616 gst_element_add_ghost_pad (element, pad, "sink");
617 g_object_unref (G_OBJECT (pad));
622 /* get rid of all installed sinks */
624 remove_sinks (GstPlayBin * play_bin)
630 GST_DEBUG ("removesinks");
631 element = g_hash_table_lookup (play_bin->cache, "abin");
632 if (element != NULL) {
633 parent = gst_element_get_parent (element);
634 if (parent != NULL) {
635 /* we remove the element from the parent so that
636 * there is no unwanted state change when the parent
638 gst_bin_remove (GST_BIN (parent), element);
639 g_object_unref (G_OBJECT (parent));
642 element = g_hash_table_lookup (play_bin->cache, "vbin");
643 if (element != NULL) {
644 parent = gst_element_get_parent (element);
645 if (parent != NULL) {
646 gst_bin_remove (GST_BIN (parent), element);
647 g_object_unref (G_OBJECT (parent));
651 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
652 GstElement *element = GST_ELEMENT (sinks->data);
653 GstPad *pad = gst_element_get_pad (element, "sink");
655 GST_LOG ("removing sink %p", element);
656 if (GST_PAD_PEER (pad))
657 gst_pad_unlink (GST_PAD_PEER (pad), pad);
658 g_object_unref (G_OBJECT (pad));
659 gst_bin_remove (GST_BIN (play_bin), element);
661 g_list_free (play_bin->sinks);
662 play_bin->sinks = NULL;
664 if (play_bin->frame) {
665 gst_buffer_unref (play_bin->frame);
666 play_bin->frame = NULL;
669 play_bin->textoverlay_element = NULL;
672 /* loop over the streams and set up the pipeline to play this
673 * media file. First we count the number of audio and video streams.
674 * If there is no video stream but there exists an audio stream,
675 * we install a visualisation pipeline.
677 * Also make sure to only connect the first audio and video pad. FIXME
678 * this should eventually be handled with a tuner interface so that
679 * one can switch the streams.
682 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
685 GstPadLinkReturn res;
688 /* we found a sink for this stream, now try to install it */
689 sinkpad = gst_element_get_pad (sink, "sink");
690 res = gst_pad_link (srcpad, sinkpad);
691 g_object_unref (G_OBJECT (sinkpad));
693 parent = gst_pad_get_parent (srcpad);
694 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)\n",
695 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
696 g_object_unref (G_OBJECT (parent));
698 /* try to link the pad of the sink to the stream */
702 /* could not link this stream */
703 capsstr = gst_caps_to_string (gst_pad_get_caps (srcpad));
704 g_warning ("could not link %s", capsstr);
707 /* we got the sink succesfully linked, now keep the sink
708 * in out internal list */
709 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
710 gst_element_set_state (sink,
711 (GST_STATE (play_bin) == GST_STATE_PLAYING) ?
712 GST_STATE_PLAYING : GST_STATE_PAUSED);
713 gst_bin_add (GST_BIN (play_bin), sink);
720 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
722 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
723 GList *streaminfo = NULL, *s;
724 gboolean need_vis = FALSE;
725 gboolean need_text = FALSE;
726 GstPad *textsrcpad = NULL, *textsinkpad = NULL, *pad;
729 /* get rid of existing sinks */
730 if (play_bin->sinks) {
731 remove_sinks (play_bin);
733 GST_DEBUG ("setupsinks");
735 /* find out what to do */
736 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
737 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
739 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
740 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
741 play_bin->visualisation != NULL) {
745 /* now actually connect everything */
746 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
747 for (s = streaminfo; s; s = g_list_next (s)) {
748 GObject *obj = G_OBJECT (s->data);
752 g_object_get (obj, "type", &type, NULL);
753 g_object_get (obj, "object", &object, NULL);
757 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
759 sink = gen_vis_element (play_bin);
761 sink = gen_audio_element (play_bin);
763 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
765 add_sink (play_bin, sink, pad);
766 g_object_unref (G_OBJECT (pad));
770 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
772 sink = gen_text_element (play_bin);
774 textsinkpad = gst_element_get_pad (sink, "text_sink");
776 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
778 gst_pad_link (textsrcpad, textsinkpad);
779 g_object_unref (G_OBJECT (textsinkpad));
780 g_object_unref (G_OBJECT (textsrcpad));
782 sink = gen_video_element (play_bin);
784 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
786 add_sink (play_bin, sink, pad);
787 g_object_unref (G_OBJECT (pad));
790 if (play_bin->fakesink) {
791 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
792 play_bin->fakesink = NULL;
796 static GstElementStateReturn
797 gst_play_bin_change_state (GstElement * element)
799 GstElementStateReturn ret;
800 GstPlayBin *play_bin;
803 play_bin = GST_PLAY_BIN (element);
805 transition = GST_STATE_TRANSITION (element);
807 switch (transition) {
808 case GST_STATE_READY_TO_PAUSED:
809 if (!play_bin->fakesink) {
810 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
811 gst_bin_add (GST_BIN (play_bin), play_bin->fakesink);
818 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
819 if (ret == GST_STATE_FAILURE)
822 switch (transition) {
823 case GST_STATE_PLAYING_TO_PAUSED:
824 /* Set audio sink state to NULL to release the sound device,
825 * but only if we own it (else we might be in chain-transition). */
826 //if (play_bin->audio_sink != NULL &&
827 // GST_STATE (play_bin->audio_sink) == GST_STATE_PAUSED) {
828 // gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
831 case GST_STATE_PAUSED_TO_READY:
832 /* Check for NULL because the state transition may be done by
833 * gst_bin_dispose which is called by gst_play_bin_dispose, and in that
834 * case, we don't want to run remove_sinks.
835 * FIXME: should the NULL test be done in remove_sinks? Should we just
836 * set the state to NULL in gst_play_bin_dispose?
838 if (play_bin->cache != NULL) {
839 remove_sinks (play_bin);
841 if (play_bin->fakesink) {
842 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
843 play_bin->fakesink = NULL;
854 plugin_init (GstPlugin * plugin)
856 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
858 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
862 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
865 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)