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 #ifndef GST_HAVE_GLIB_2_8
43 #define _gst_gvalue_set_gstobject(gvalue,obj) \
45 gst_object_ref (obj); \
46 g_value_set_object (gvalue, obj); \
47 g_object_unref (obj); \
49 g_value_set_object (gvalue, NULL); \
52 #define _gst_gvalue_set_gstobject(gvalue,obj) \
53 g_value_set_object (gvalue, obj);
56 typedef struct _GstPlayBin GstPlayBin;
57 typedef struct _GstPlayBinClass GstPlayBinClass;
61 GstPlayBaseBin parent;
63 /* the configurable elements */
65 GstElement *audio_sink;
66 GstElement *video_sink;
67 GstElement *visualisation;
68 GstElement *pending_visualisation;
69 GstElement *volume_element;
70 GstElement *textoverlay_element;
73 /* these are the currently active sinks */
76 /* the last captured frame for snapshots */
79 /* our cache for the sinks */
82 /* font description */
86 struct _GstPlayBinClass
88 GstPlayBaseBinClass parent_class;
109 static void gst_play_bin_class_init (GstPlayBinClass * klass);
110 static void gst_play_bin_init (GstPlayBin * play_bin);
111 static void gst_play_bin_dispose (GObject * object);
113 static gboolean setup_sinks (GstPlayBaseBin * play_base_bin,
114 GstPlayBaseGroup * group);
115 static void remove_sinks (GstPlayBin * play_bin);
117 static void gst_play_bin_set_property (GObject * object, guint prop_id,
118 const GValue * value, GParamSpec * spec);
119 static void gst_play_bin_get_property (GObject * object, guint prop_id,
120 GValue * value, GParamSpec * spec);
122 static gboolean gst_play_bin_send_event (GstElement * element,
124 static GstStateChangeReturn gst_play_bin_change_state (GstElement * element,
125 GstStateChange transition);
127 static GstElementClass *parent_class;
129 //static guint gst_play_bin_signals[LAST_SIGNAL] = { 0 };
131 static GstElementDetails gst_play_bin_details = {
133 "Generic/Bin/Player",
134 "Autoplug and play media from an uri",
135 "Wim Taymans <wim@fluendo.com>"
139 gst_play_bin_get_type (void)
141 static GType gst_play_bin_type = 0;
143 if (!gst_play_bin_type) {
144 static const GTypeInfo gst_play_bin_info = {
145 sizeof (GstPlayBinClass),
148 (GClassInitFunc) gst_play_bin_class_init,
153 (GInstanceInitFunc) gst_play_bin_init,
157 gst_play_bin_type = g_type_register_static (GST_TYPE_PLAY_BASE_BIN,
158 "GstPlayBin", &gst_play_bin_info, 0);
161 return gst_play_bin_type;
165 gst_play_bin_class_init (GstPlayBinClass * klass)
167 GObjectClass *gobject_klass;
168 GstElementClass *gstelement_klass;
169 GstBinClass *gstbin_klass;
170 GstPlayBaseBinClass *playbasebin_klass;
172 gobject_klass = (GObjectClass *) klass;
173 gstelement_klass = (GstElementClass *) klass;
174 gstbin_klass = (GstBinClass *) klass;
175 playbasebin_klass = (GstPlayBaseBinClass *) klass;
177 parent_class = g_type_class_ref (gst_play_base_bin_get_type ());
179 gobject_klass->set_property = gst_play_bin_set_property;
180 gobject_klass->get_property = gst_play_bin_get_property;
182 g_object_class_install_property (gobject_klass, ARG_VIDEO_SINK,
183 g_param_spec_object ("video-sink", "Video Sink",
184 "the video output element to use (NULL = default sink)",
185 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
186 g_object_class_install_property (gobject_klass, ARG_AUDIO_SINK,
187 g_param_spec_object ("audio-sink", "Audio Sink",
188 "the audio output element to use (NULL = default sink)",
189 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
190 g_object_class_install_property (gobject_klass, ARG_VIS_PLUGIN,
191 g_param_spec_object ("vis-plugin", "Vis plugin",
192 "the visualization element to use (NULL = none)",
193 GST_TYPE_ELEMENT, G_PARAM_READWRITE));
194 g_object_class_install_property (gobject_klass, ARG_VOLUME,
195 g_param_spec_double ("volume", "volume", "volume",
196 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE));
197 g_object_class_install_property (gobject_klass, ARG_FRAME,
198 gst_param_spec_mini_object ("frame", "Frame",
199 "The last frame (NULL = no video available)",
200 GST_TYPE_BUFFER, G_PARAM_READABLE));
201 g_object_class_install_property (gobject_klass, ARG_FONT_DESC,
202 g_param_spec_string ("subtitle-font-desc",
203 "Subtitle font description",
204 "Pango font description of font "
205 "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE));
207 gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_play_bin_dispose);
209 gst_element_class_set_details (gstelement_klass, &gst_play_bin_details);
211 gstelement_klass->change_state =
212 GST_DEBUG_FUNCPTR (gst_play_bin_change_state);
213 gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_bin_send_event);
215 playbasebin_klass->setup_output_pads = setup_sinks;
219 gst_play_bin_init (GstPlayBin * play_bin)
221 play_bin->video_sink = NULL;
222 play_bin->audio_sink = NULL;
223 play_bin->visualisation = NULL;
224 play_bin->pending_visualisation = NULL;
225 play_bin->volume_element = NULL;
226 play_bin->textoverlay_element = NULL;
227 play_bin->volume = 1.0;
228 play_bin->sinks = NULL;
229 play_bin->frame = NULL;
230 play_bin->font_desc = NULL;
231 play_bin->cache = g_hash_table_new_full (g_str_hash, g_str_equal,
232 NULL, (GDestroyNotify) gst_object_unref);
236 gst_play_bin_dispose (GObject * object)
238 GstPlayBin *play_bin;
240 play_bin = GST_PLAY_BIN (object);
242 if (play_bin->cache != NULL) {
243 remove_sinks (play_bin);
244 g_hash_table_destroy (play_bin->cache);
245 play_bin->cache = NULL;
248 if (play_bin->audio_sink != NULL) {
249 gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
250 gst_object_unref (play_bin->audio_sink);
251 play_bin->audio_sink = NULL;
253 if (play_bin->video_sink != NULL) {
254 gst_element_set_state (play_bin->video_sink, GST_STATE_NULL);
255 gst_object_unref (play_bin->video_sink);
256 play_bin->video_sink = NULL;
258 if (play_bin->visualisation != NULL) {
259 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
260 gst_object_unref (play_bin->visualisation);
261 play_bin->visualisation = NULL;
263 if (play_bin->pending_visualisation != NULL) {
264 gst_element_set_state (play_bin->pending_visualisation, GST_STATE_NULL);
265 gst_object_unref (play_bin->pending_visualisation);
266 play_bin->pending_visualisation = NULL;
268 g_free (play_bin->font_desc);
269 play_bin->font_desc = NULL;
271 G_OBJECT_CLASS (parent_class)->dispose (object);
275 gst_play_bin_vis_unblocked (GstPad * tee_pad, gboolean blocked,
282 gst_play_bin_vis_blocked (GstPad * tee_pad, gboolean blocked,
285 GstPlayBin *play_bin = GST_PLAY_BIN (user_data);
286 GstBin *vis_bin = NULL;
287 GstPad *vis_sink_pad = NULL, *vis_src_pad = NULL, *vqueue_pad = NULL;
290 /* We want to disable visualisation */
291 if (!GST_IS_ELEMENT (play_bin->pending_visualisation)) {
292 /* Set visualisation element to READY */
293 gst_element_set_state (play_bin->visualisation, GST_STATE_READY);
298 GST_BIN (gst_object_get_parent (GST_OBJECT (play_bin->visualisation)));
300 if (!GST_IS_BIN (vis_bin) || !GST_IS_PAD (tee_pad)) {
304 vis_src_pad = gst_element_get_pad (play_bin->visualisation, "src");
305 vis_sink_pad = gst_pad_get_peer (tee_pad);
307 /* Can be fakesink */
308 if (GST_IS_PAD (vis_src_pad)) {
309 vqueue_pad = gst_pad_get_peer (vis_src_pad);
312 if (!GST_IS_PAD (vis_sink_pad)) {
316 /* Check the bin's state */
317 GST_OBJECT_LOCK (vis_bin);
318 bin_state = GST_STATE (vis_bin);
319 GST_OBJECT_UNLOCK (vis_bin);
322 gst_pad_unlink (tee_pad, vis_sink_pad);
323 gst_object_unref (vis_sink_pad);
326 if (GST_IS_PAD (vqueue_pad)) {
327 gst_pad_unlink (vis_src_pad, vqueue_pad);
328 gst_object_unref (vis_src_pad);
332 /* Remove from vis_bin */
333 gst_bin_remove (vis_bin, play_bin->visualisation);
334 /* Set state to NULL */
335 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
336 /* And loose our ref */
337 gst_object_unref (play_bin->visualisation);
339 if (play_bin->pending_visualisation) {
340 /* Ref this new visualisation element before adding to the bin */
341 gst_object_ref (play_bin->pending_visualisation);
342 /* Add the new one */
343 gst_bin_add (vis_bin, play_bin->pending_visualisation);
344 /* Synchronizing state */
345 gst_element_set_state (play_bin->pending_visualisation, bin_state);
347 vis_sink_pad = gst_element_get_pad (play_bin->pending_visualisation,
349 vis_src_pad = gst_element_get_pad (play_bin->pending_visualisation, "src");
351 if (!GST_IS_PAD (vis_sink_pad) || !GST_IS_PAD (vis_src_pad)) {
356 gst_pad_link (tee_pad, vis_sink_pad);
357 gst_pad_link (vis_src_pad, vqueue_pad);
361 gst_object_unref (play_bin->visualisation);
362 play_bin->visualisation = play_bin->pending_visualisation;
363 play_bin->pending_visualisation = NULL;
367 gst_object_unref (vis_sink_pad);
370 gst_object_unref (vis_src_pad);
373 gst_object_unref (vqueue_pad);
376 gst_object_unref (vis_bin);
379 /* Unblock the pad */
380 gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_bin_vis_unblocked,
385 gst_play_bin_set_property (GObject * object, guint prop_id,
386 const GValue * value, GParamSpec * pspec)
388 GstPlayBin *play_bin;
390 g_return_if_fail (GST_IS_PLAY_BIN (object));
392 play_bin = GST_PLAY_BIN (object);
396 if (play_bin->video_sink != NULL) {
397 gst_object_unref (play_bin->video_sink);
399 play_bin->video_sink = g_value_get_object (value);
400 if (play_bin->video_sink != NULL) {
401 gst_object_ref (play_bin->video_sink);
402 gst_object_sink (GST_OBJECT (play_bin->video_sink));
404 /* when changing the videosink, we just remove the
405 * video pipeline from the cache so that it will be
406 * regenerated with the new sink element */
407 g_hash_table_remove (play_bin->cache, "vbin");
410 if (play_bin->audio_sink != NULL) {
411 gst_object_unref (play_bin->audio_sink);
413 play_bin->audio_sink = g_value_get_object (value);
414 if (play_bin->audio_sink != NULL) {
415 gst_object_ref (play_bin->audio_sink);
416 gst_object_sink (GST_OBJECT (play_bin->audio_sink));
418 g_hash_table_remove (play_bin->cache, "abin");
422 /* Do we already have a visualisation change pending ? */
423 if (play_bin->pending_visualisation) {
424 gst_object_unref (play_bin->pending_visualisation);
425 play_bin->pending_visualisation = g_value_get_object (value);
427 if (play_bin->pending_visualisation) {
428 gst_object_ref (play_bin->pending_visualisation);
429 gst_object_sink (GST_OBJECT (play_bin->pending_visualisation));
432 play_bin->pending_visualisation = g_value_get_object (value);
435 if (play_bin->pending_visualisation) {
436 gst_object_ref (play_bin->pending_visualisation);
437 gst_object_sink (GST_OBJECT (play_bin->pending_visualisation));
440 /* Was there a visualisation already set ? */
441 if (play_bin->visualisation != NULL) {
442 GstBin *vis_bin = NULL;
445 GST_BIN (gst_object_get_parent (GST_OBJECT (play_bin->
448 /* Check if the visualisation is already in a bin */
449 if (GST_IS_BIN (vis_bin)) {
450 GstPad *vis_sink_pad = NULL, *tee_pad = NULL;
452 /* Now get tee pad and block it async */
453 vis_sink_pad = gst_element_get_pad (play_bin->visualisation,
455 if (!GST_IS_PAD (vis_sink_pad)) {
458 tee_pad = gst_pad_get_peer (vis_sink_pad);
459 if (!GST_IS_PAD (tee_pad)) {
463 /* Block with callback */
464 gst_pad_set_blocked_async (tee_pad, TRUE, gst_play_bin_vis_blocked,
468 gst_object_unref (vis_sink_pad);
471 gst_object_unref (tee_pad);
473 gst_object_unref (vis_bin);
475 play_bin->visualisation = play_bin->pending_visualisation;
476 play_bin->pending_visualisation = NULL;
479 play_bin->visualisation = play_bin->pending_visualisation;
480 play_bin->pending_visualisation = NULL;
486 play_bin->volume = g_value_get_double (value);
487 if (play_bin->volume_element) {
488 g_object_set (G_OBJECT (play_bin->volume_element), "volume",
489 play_bin->volume, NULL);
493 g_free (play_bin->font_desc);
494 play_bin->font_desc = g_strdup (g_value_get_string (value));
495 if (play_bin->textoverlay_element) {
496 g_object_set (G_OBJECT (play_bin->textoverlay_element),
497 "font-desc", g_value_get_string (value), NULL);
501 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
507 gst_play_bin_get_property (GObject * object, guint prop_id, GValue * value,
510 GstPlayBin *play_bin;
512 g_return_if_fail (GST_IS_PLAY_BIN (object));
514 play_bin = GST_PLAY_BIN (object);
518 _gst_gvalue_set_gstobject (value, play_bin->video_sink);
521 _gst_gvalue_set_gstobject (value, play_bin->audio_sink);
524 _gst_gvalue_set_gstobject (value, play_bin->visualisation);
527 g_value_set_double (value, play_bin->volume);
530 gst_value_set_mini_object (value, GST_MINI_OBJECT (play_bin->frame));
533 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
538 /* signal fired when the identity has received a new buffer. This is used for
539 * making screenshots.
542 handoff (GstElement * identity, GstBuffer * frame, gpointer data)
544 GstPlayBin *play_bin = GST_PLAY_BIN (data);
546 gst_mini_object_replace ((GstMiniObject **) & play_bin->frame,
547 GST_MINI_OBJECT_CAST (frame));
549 /* applications need to know the buffer caps,
550 * make sure they are always set on the frame */
551 if (GST_BUFFER_CAPS (play_bin->frame) == NULL) {
554 if ((pad = gst_element_get_pad (identity, "sink"))) {
555 gst_buffer_set_caps (play_bin->frame, GST_PAD_CAPS (pad));
556 gst_object_unref (pad);
561 /* make the element (bin) that contains the elements needed to perform
562 * video display. We connect a handoff signal to identity so that we
563 * can grab snapshots. Identity's sinkpad is ghosted to vbin.
565 * +-------------------------------------------------------------+
567 * | +--------+ +----------+ +----------+ +---------+ |
568 * | |identity| |colorspace| |videoscale| |videosink| |
569 * | +-sink src-sink src-sink src-sink | |
570 * | | +---+----+ +----------+ +----------+ +---------+ |
572 * +----------|--------------------------------------------------+
575 /* FIXME: this might return NULL if no videosink was found, handle
578 gen_video_element (GstPlayBin * play_bin)
585 GstElement *identity;
588 /* first see if we have it in the cache */
589 element = g_hash_table_lookup (play_bin->cache, "vbin");
590 if (element != NULL) {
594 if (play_bin->video_sink) {
595 sink = play_bin->video_sink;
597 sink = gst_element_factory_make ("autovideosink", "videosink");
599 sink = gst_element_factory_make ("xvimagesink", "videosink");
601 /* FIXME: this warrants adding a CORE error category for missing
602 * elements/plugins */
604 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
605 (_("Both autovideosink and xvimagesink elements are missing.")),
610 gst_object_ref (sink);
611 g_hash_table_insert (play_bin->cache, "video_sink", sink);
614 element = gst_bin_new ("vbin");
615 identity = gst_element_factory_make ("identity", "id");
616 g_object_set (identity, "silent", TRUE, NULL);
617 g_signal_connect (identity, "handoff", G_CALLBACK (handoff), play_bin);
618 conv = gst_element_factory_make ("ffmpegcolorspace", "vconv");
619 scale = gst_element_factory_make ("videoscale", "vscale");
620 gst_bin_add (GST_BIN (element), identity);
621 gst_bin_add (GST_BIN (element), conv);
622 gst_bin_add (GST_BIN (element), scale);
623 gst_bin_add (GST_BIN (element), sink);
624 gst_element_link_pads (identity, "src", conv, "sink");
625 gst_element_link_pads (conv, "src", scale, "sink");
626 gst_element_link_pads (scale, "src", sink, "sink");
628 pad = gst_element_get_pad (identity, "sink");
629 gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
630 gst_object_unref (pad);
632 gst_element_set_state (element, GST_STATE_READY);
634 /* since we're gonna add it to a bin but don't want to lose it,
635 * we keep a reference. */
636 gst_object_ref (element);
637 g_hash_table_insert (play_bin->cache, "vbin", element);
642 /* make an element for playback of video with subtitles embedded.
644 * +--------------------------------------------------+
645 * | tbin +-------------+ |
646 * | +-----+ | textoverlay | +------+ |
647 * | | csp | +--video_sink | | vbin | |
648 * video_sink-sink src+ +-text_sink src-sink | |
649 * | +-----+ | +-------------+ +------+ |
650 * text_sink-------------+ |
651 * +--------------------------------------------------+
655 gen_text_element (GstPlayBin * play_bin)
657 GstElement *element, *csp, *overlay, *vbin;
660 overlay = gst_element_factory_make ("textoverlay", "overlay");
661 g_object_set (G_OBJECT (overlay),
662 "halign", "center", "valign", "bottom", NULL);
663 play_bin->textoverlay_element = overlay;
664 if (play_bin->font_desc) {
665 g_object_set (G_OBJECT (play_bin->textoverlay_element),
666 "font-desc", play_bin->font_desc, NULL);
668 vbin = gen_video_element (play_bin);
670 g_warning ("No overlay (pango) element, subtitles disabled");
673 csp = gst_element_factory_make ("ffmpegcolorspace", "subtitlecsp");
674 element = gst_bin_new ("textbin");
675 gst_element_link_many (csp, overlay, vbin, NULL);
676 gst_bin_add_many (GST_BIN (element), csp, overlay, vbin, NULL);
678 pad = gst_element_get_pad (overlay, "text_sink");
679 #define gst_element_add_ghost_pad(element, pad, name) \
680 gst_element_add_pad (element, gst_ghost_pad_new (name, pad))
681 gst_element_add_ghost_pad (element, pad, "text_sink");
682 gst_object_unref (pad);
684 pad = gst_element_get_pad (csp, "sink");
685 gst_element_add_ghost_pad (element, pad, "sink");
686 gst_object_unref (pad);
691 /* make the element (bin) that contains the elements needed to perform
694 * +-------------------------------------------------------------+
696 * | +---------+ +----------+ +---------+ +---------+ |
697 * | |audioconv| |audioscale| | volume | |audiosink| |
698 * | +-sink src-sink src-sink src-sink | |
699 * | | +---------+ +----------+ +---------+ +---------+ |
701 * +-------------------------------------------------------------+
705 gen_audio_element (GstPlayBin * play_bin)
714 element = g_hash_table_lookup (play_bin->cache, "abin");
715 if (element != NULL) {
718 element = gst_bin_new ("abin");
719 conv = gst_element_factory_make ("audioconvert", "aconv");
720 scale = gst_element_factory_make ("audioscale", "ascale");
722 volume = gst_element_factory_make ("volume", "volume");
723 g_object_set (G_OBJECT (volume), "volume", play_bin->volume, NULL);
724 play_bin->volume_element = volume;
726 if (play_bin->audio_sink) {
727 sink = play_bin->audio_sink;
729 sink = gst_element_factory_make ("autoaudiosink", "audiosink");
731 sink = gst_element_factory_make ("alsasink", "audiosink");
734 GST_ELEMENT_ERROR (play_bin, CORE, MISSING_PLUGIN,
735 (_("Both autoaudiosink and alsasink elements are missing.")), (NULL));
738 play_bin->audio_sink = GST_ELEMENT (gst_object_ref (sink));
741 gst_object_ref (sink);
742 g_hash_table_insert (play_bin->cache, "audio_sink", sink);
744 gst_bin_add (GST_BIN (element), conv);
745 //gst_bin_add (GST_BIN (element), scale);
746 gst_bin_add (GST_BIN (element), volume);
747 gst_bin_add (GST_BIN (element), sink);
749 gst_element_link_pads (conv, "src", /*scale, "sink");
750 gst_element_link_pads (scale, "src", */ volume, "sink");
751 gst_element_link_pads (volume, "src", sink, "sink");
753 pad = gst_element_get_pad (conv, "sink");
754 gst_element_add_ghost_pad (element, pad, "sink");
755 gst_object_unref (pad);
757 gst_element_set_state (element, GST_STATE_READY);
759 /* since we're gonna add it to a bin but don't want to lose it,
760 * we keep a reference. */
761 gst_object_ref (element);
762 g_hash_table_insert (play_bin->cache, "abin", element);
767 /* make the element (bin) that contains the elements needed to perform
768 * visualisation ouput. The idea is to split the audio using tee, then
769 * sending the output to the regular audio bin and the other output to
770 * the vis plugin that transforms it into a video that is rendered with the
771 * normal video bin. The video bin is run in a thread to make sure it does
772 * not block the audio playback pipeline.
774 * +--------------------------------------------------------------------------+
776 * | +------+ +----------------+ |
777 * | | tee | | abin ... | |
778 * | +-sink src-sink | |
779 * | | | | +----------------+ +-------------------+ |
780 * | | | | | vthread | |
781 * | | | | +---------+ +------+ +------+ | +--------------+ | |
782 * | | | | |audioconv| | vis | |vqueue| | | vbin ... | | |
783 * | | | src-sink src-sink src-sink src-sink | | |
784 * | | | | +---------+ +------+ +------+ | +--------------+ | |
785 * | | | | +-------------------+ |
788 +--------------------------------------------------------------------------+
791 gen_vis_element (GstPlayBin * play_bin)
799 GstElement *vqueue, *aqueue;
802 asink = gen_audio_element (play_bin);
805 vsink = gen_video_element (play_bin);
807 gst_object_unref (asink);
811 element = gst_bin_new ("visbin");
812 tee = gst_element_factory_make ("tee", "tee");
814 vqueue = gst_element_factory_make ("queue", "vqueue");
815 aqueue = gst_element_factory_make ("queue", "aqueue");
817 gst_bin_add (GST_BIN (element), asink);
818 gst_bin_add (GST_BIN (element), vqueue);
819 gst_bin_add (GST_BIN (element), aqueue);
820 gst_bin_add (GST_BIN (element), vsink);
821 gst_bin_add (GST_BIN (element), tee);
823 conv = gst_element_factory_make ("audioconvert", "aconv");
824 if (play_bin->visualisation) {
825 gst_object_ref (play_bin->visualisation);
826 vis = play_bin->visualisation;
828 vis = gst_element_factory_make ("goom", "vis");
831 gst_bin_add (GST_BIN (element), conv);
832 gst_bin_add (GST_BIN (element), vis);
834 gst_element_link_pads (conv, "src", vis, "sink");
835 gst_element_link_pads (vis, "src", vqueue, "sink");
837 gst_element_link_pads (vqueue, "src", vsink, "sink");
839 pad = gst_element_get_pad (aqueue, "sink");
840 rpad = gst_element_get_request_pad (tee, "src%d");
841 gst_pad_link (rpad, pad);
842 gst_object_unref (rpad);
843 gst_object_unref (pad);
844 gst_element_link_pads (aqueue, "src", asink, "sink");
846 pad = gst_element_get_pad (conv, "sink");
847 rpad = gst_element_get_request_pad (tee, "src%d");
848 gst_pad_link (rpad, pad);
849 gst_object_unref (rpad);
850 gst_object_unref (pad);
852 pad = gst_element_get_pad (tee, "sink");
853 gst_element_add_ghost_pad (element, pad, "sink");
854 gst_object_unref (pad);
859 /* get rid of all installed sinks */
861 remove_sinks (GstPlayBin * play_bin)
868 GST_DEBUG ("removesinks");
869 element = g_hash_table_lookup (play_bin->cache, "abin");
870 if (element != NULL) {
871 parent = gst_element_get_parent (element);
872 if (parent != NULL) {
873 /* we remove the element from the parent so that
874 * there is no unwanted state change when the parent
876 play_bin->sinks = g_list_remove (play_bin->sinks, element);
877 gst_element_set_state (element, GST_STATE_NULL);
878 gst_bin_remove (GST_BIN (parent), element);
879 gst_object_unref (parent);
881 pad = gst_element_get_pad (element, "sink");
883 peer = gst_pad_get_peer (pad);
885 gst_pad_unlink (peer, pad);
886 gst_object_unref (peer);
888 gst_object_unref (pad);
891 element = g_hash_table_lookup (play_bin->cache, "vbin");
892 if (element != NULL) {
893 parent = gst_element_get_parent (element);
894 if (parent != NULL) {
895 play_bin->sinks = g_list_remove (play_bin->sinks, element);
896 gst_element_set_state (element, GST_STATE_NULL);
897 gst_bin_remove (GST_BIN (parent), element);
898 gst_object_unref (parent);
900 pad = gst_element_get_pad (element, "sink");
902 peer = gst_pad_get_peer (pad);
904 gst_pad_unlink (peer, pad);
905 gst_object_unref (peer);
907 gst_object_unref (pad);
911 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
912 GstElement *element = GST_ELEMENT (sinks->data);
916 pad = gst_element_get_pad (element, "sink");
918 GST_LOG ("removing sink %p", element);
920 peer = gst_pad_get_peer (pad);
922 gst_pad_unlink (peer, pad);
923 gst_object_unref (peer);
925 gst_object_unref (pad);
927 gst_element_set_state (element, GST_STATE_NULL);
928 gst_bin_remove (GST_BIN (play_bin), element);
930 g_list_free (play_bin->sinks);
931 play_bin->sinks = NULL;
933 /* FIXME: this is probably some refcounting problem */
934 if (play_bin->visualisation && GST_OBJECT_PARENT (play_bin->visualisation)) {
935 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
936 gst_bin_remove (GST_BIN (GST_OBJECT_PARENT (play_bin->visualisation)),
937 play_bin->visualisation);
940 if (play_bin->frame) {
941 gst_buffer_unref (play_bin->frame);
942 play_bin->frame = NULL;
945 play_bin->textoverlay_element = NULL;
948 /* loop over the streams and set up the pipeline to play this
949 * media file. First we count the number of audio and video streams.
950 * If there is no video stream but there exists an audio stream,
951 * we install a visualisation pipeline.
953 * Also make sure to only connect the first audio and video pad. FIXME
954 * this should eventually be handled with a tuner interface so that
955 * one can switch the streams.
958 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
961 GstPadLinkReturn linkres;
963 GstStateChangeReturn stateret;
965 g_return_val_if_fail (sink != NULL, FALSE);
966 /* this is only for debugging */
967 parent = gst_pad_get_parent_element (srcpad);
969 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
970 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
971 gst_object_unref (parent);
974 /* bring it to the PAUSED state so we can link to the peer without
975 * breaking the flow */
976 if ((stateret = gst_element_set_state (sink, GST_STATE_PAUSED)) ==
977 GST_STATE_CHANGE_FAILURE)
980 gst_bin_add (GST_BIN (play_bin), sink);
982 /* we found a sink for this stream, now try to install it */
983 sinkpad = gst_element_get_pad (sink, "sink");
984 linkres = gst_pad_link (srcpad, sinkpad);
985 gst_object_unref (sinkpad);
987 /* try to link the pad of the sink to the stream */
988 if (GST_PAD_LINK_FAILED (linkres))
991 /* we got the sink succesfully linked, now keep the sink
992 * in out internal list */
993 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
1000 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1008 /* could not link this stream */
1009 caps = gst_pad_get_caps (srcpad);
1010 capsstr = gst_caps_to_string (caps);
1011 g_warning ("could not link %s: %d", capsstr, linkres);
1012 GST_DEBUG_OBJECT (play_bin,
1013 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1017 gst_element_set_state (sink, GST_STATE_NULL);
1018 gst_bin_remove (GST_BIN (play_bin), sink);
1024 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1026 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1027 GList *streaminfo = NULL, *s;
1028 gboolean need_vis = FALSE;
1029 gboolean need_text = FALSE;
1030 GstPad *textsrcpad = NULL, *textsinkpad = NULL, *pad;
1032 gboolean res = TRUE;
1034 /* get rid of existing sinks */
1035 if (play_bin->sinks) {
1036 remove_sinks (play_bin);
1038 GST_DEBUG_OBJECT (play_base_bin, "setupsinks");
1040 /* find out what to do */
1041 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
1042 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1044 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
1045 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1046 play_bin->visualisation != NULL) {
1050 /* now actually connect everything */
1051 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
1052 for (s = streaminfo; s; s = g_list_next (s)) {
1053 GObject *obj = G_OBJECT (s->data);
1057 g_object_get (obj, "type", &type, NULL);
1058 g_object_get (obj, "object", &object, NULL);
1062 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1064 sink = gen_vis_element (play_bin);
1066 sink = gen_audio_element (play_bin);
1070 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
1072 res = add_sink (play_bin, sink, pad);
1073 gst_object_unref (pad);
1077 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
1079 sink = gen_text_element (play_bin);
1081 textsinkpad = gst_element_get_pad (sink, "text_sink");
1083 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
1085 gst_pad_link (textsrcpad, textsinkpad);
1086 gst_object_unref (textsinkpad);
1087 gst_object_unref (textsrcpad);
1089 sink = gen_video_element (play_bin);
1093 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
1095 res = add_sink (play_bin, sink, pad);
1096 gst_object_unref (pad);
1099 /* remove the sinks now, pipeline get_state will now wait for the
1100 * sinks to preroll */
1101 if (play_bin->fakesink) {
1102 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1103 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
1104 play_bin->fakesink = NULL;
1110 /* Send an event to our sinks until one of them works; don't then send to the
1111 * remaining sinks (unlike GstBin)
1114 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1116 GList *sinks = play_bin->sinks;
1117 gboolean res = TRUE;
1120 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1122 gst_event_ref (event);
1123 if ((res = gst_element_send_event (sink, event)))
1126 sinks = g_list_next (sinks);
1129 gst_event_unref (event);
1135 do_playbin_seek (GstElement * element, GstEvent * event)
1140 gboolean was_playing = FALSE;
1143 gst_event_parse_seek (event, &rate, NULL, &flags, NULL, NULL, NULL, NULL);
1145 flush = flags & GST_SEEK_FLAG_FLUSH;
1150 /* need to call _get_state() since a bin state is only updated
1151 * with this call. */
1152 gst_element_get_state (element, &state, NULL, 0);
1153 was_playing = state == GST_STATE_PLAYING;
1156 gst_element_set_state (element, GST_STATE_PAUSED);
1160 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1163 /* need to reset the stream time to 0 after a flushing seek */
1164 gst_pipeline_set_new_stream_time (GST_PIPELINE (element), 0);
1166 /* and continue playing */
1167 gst_element_set_state (element, GST_STATE_PLAYING);
1172 /* We only want to send the event to a single sink (overriding GstBin's
1173 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1174 * events appropriately. So, this is a messy duplication of code. */
1176 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1178 gboolean res = FALSE;
1179 GstEventType event_type = GST_EVENT_TYPE (event);
1182 switch (event_type) {
1183 case GST_EVENT_SEEK:
1184 res = do_playbin_seek (element, event);
1187 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1194 static GstStateChangeReturn
1195 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1197 GstStateChangeReturn ret;
1198 GstPlayBin *play_bin;
1200 play_bin = GST_PLAY_BIN (element);
1203 switch (transition) {
1204 case GST_STATE_CHANGE_READY_TO_PAUSED:
1205 /* this really is the easiest way to make the state change return
1206 * ASYNC until we added the sinks */
1207 if (!play_bin->fakesink) {
1208 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1209 gst_bin_add (GST_BIN (play_bin), play_bin->fakesink);
1216 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1217 if (ret == GST_STATE_CHANGE_FAILURE)
1220 switch (transition) {
1221 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1222 /* Set audio sink state to NULL to release the sound device,
1223 * but only if we own it (else we might be in chain-transition). */
1224 //if (play_bin->audio_sink != NULL &&
1225 // GST_STATE (play_bin->audio_sink) == GST_STATE_PAUSED) {
1226 // gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
1229 case GST_STATE_CHANGE_PAUSED_TO_READY:
1230 /* Check for NULL because the state transition may be done by
1231 * gst_bin_dispose which is called by gst_play_bin_dispose, and in that
1232 * case, we don't want to run remove_sinks.
1233 * FIXME: should the NULL test be done in remove_sinks? Should we just
1234 * set the state to NULL in gst_play_bin_dispose?
1236 if (play_bin->cache != NULL) {
1237 remove_sinks (play_bin);
1239 if (play_bin->fakesink) {
1240 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1241 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
1242 play_bin->fakesink = NULL;
1253 plugin_init (GstPlugin * plugin)
1255 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1258 GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
1260 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
1261 #endif /* ENABLE_NLS */
1263 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
1267 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1270 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,