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 element = gst_bin_new ("visbin");
803 tee = gst_element_factory_make ("tee", "tee");
805 vqueue = gst_element_factory_make ("queue", "vqueue");
806 aqueue = gst_element_factory_make ("queue", "aqueue");
808 asink = gen_audio_element (play_bin);
809 vsink = gen_video_element (play_bin);
811 gst_bin_add (GST_BIN (element), asink);
812 gst_bin_add (GST_BIN (element), vqueue);
813 gst_bin_add (GST_BIN (element), aqueue);
814 gst_bin_add (GST_BIN (element), vsink);
815 gst_bin_add (GST_BIN (element), tee);
817 conv = gst_element_factory_make ("audioconvert", "aconv");
818 if (play_bin->visualisation) {
819 gst_object_ref (play_bin->visualisation);
820 vis = play_bin->visualisation;
822 vis = gst_element_factory_make ("goom", "vis");
825 gst_bin_add (GST_BIN (element), conv);
826 gst_bin_add (GST_BIN (element), vis);
828 gst_element_link_pads (conv, "src", vis, "sink");
829 gst_element_link_pads (vis, "src", vqueue, "sink");
831 gst_element_link_pads (vqueue, "src", vsink, "sink");
833 pad = gst_element_get_pad (aqueue, "sink");
834 rpad = gst_element_get_request_pad (tee, "src%d");
835 gst_pad_link (rpad, pad);
836 gst_object_unref (rpad);
837 gst_object_unref (pad);
838 gst_element_link_pads (aqueue, "src", asink, "sink");
840 pad = gst_element_get_pad (conv, "sink");
841 rpad = gst_element_get_request_pad (tee, "src%d");
842 gst_pad_link (rpad, pad);
843 gst_object_unref (rpad);
844 gst_object_unref (pad);
846 pad = gst_element_get_pad (tee, "sink");
847 gst_element_add_ghost_pad (element, pad, "sink");
848 gst_object_unref (pad);
853 /* get rid of all installed sinks */
855 remove_sinks (GstPlayBin * play_bin)
862 GST_DEBUG ("removesinks");
863 element = g_hash_table_lookup (play_bin->cache, "abin");
864 if (element != NULL) {
865 parent = gst_element_get_parent (element);
866 if (parent != NULL) {
867 /* we remove the element from the parent so that
868 * there is no unwanted state change when the parent
870 play_bin->sinks = g_list_remove (play_bin->sinks, element);
871 gst_element_set_state (element, GST_STATE_NULL);
872 gst_bin_remove (GST_BIN (parent), element);
873 gst_object_unref (parent);
875 pad = gst_element_get_pad (element, "sink");
877 peer = gst_pad_get_peer (pad);
879 gst_pad_unlink (peer, pad);
880 gst_object_unref (peer);
882 gst_object_unref (pad);
885 element = g_hash_table_lookup (play_bin->cache, "vbin");
886 if (element != NULL) {
887 parent = gst_element_get_parent (element);
888 if (parent != NULL) {
889 play_bin->sinks = g_list_remove (play_bin->sinks, element);
890 gst_element_set_state (element, GST_STATE_NULL);
891 gst_bin_remove (GST_BIN (parent), element);
892 gst_object_unref (parent);
894 pad = gst_element_get_pad (element, "sink");
896 peer = gst_pad_get_peer (pad);
898 gst_pad_unlink (peer, pad);
899 gst_object_unref (peer);
901 gst_object_unref (pad);
905 for (sinks = play_bin->sinks; sinks; sinks = g_list_next (sinks)) {
906 GstElement *element = GST_ELEMENT (sinks->data);
910 pad = gst_element_get_pad (element, "sink");
912 GST_LOG ("removing sink %p", element);
914 peer = gst_pad_get_peer (pad);
916 gst_pad_unlink (peer, pad);
917 gst_object_unref (peer);
919 gst_object_unref (pad);
921 gst_element_set_state (element, GST_STATE_NULL);
922 gst_bin_remove (GST_BIN (play_bin), element);
924 g_list_free (play_bin->sinks);
925 play_bin->sinks = NULL;
927 /* FIXME: this is probably some refcounting problem */
928 if (play_bin->visualisation && GST_OBJECT_PARENT (play_bin->visualisation)) {
929 gst_element_set_state (play_bin->visualisation, GST_STATE_NULL);
930 gst_bin_remove (GST_BIN (GST_OBJECT_PARENT (play_bin->visualisation)),
931 play_bin->visualisation);
934 if (play_bin->frame) {
935 gst_buffer_unref (play_bin->frame);
936 play_bin->frame = NULL;
939 play_bin->textoverlay_element = NULL;
942 /* loop over the streams and set up the pipeline to play this
943 * media file. First we count the number of audio and video streams.
944 * If there is no video stream but there exists an audio stream,
945 * we install a visualisation pipeline.
947 * Also make sure to only connect the first audio and video pad. FIXME
948 * this should eventually be handled with a tuner interface so that
949 * one can switch the streams.
952 add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
955 GstPadLinkReturn linkres;
957 GstStateChangeReturn stateret;
959 /* this is only for debugging */
960 parent = gst_pad_get_parent_element (srcpad);
962 GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)",
963 GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
964 gst_object_unref (parent);
967 /* bring it to the PAUSED state so we can link to the peer without
968 * breaking the flow */
969 if ((stateret = gst_element_set_state (sink, GST_STATE_PAUSED)) ==
970 GST_STATE_CHANGE_FAILURE)
973 gst_bin_add (GST_BIN (play_bin), sink);
975 /* we found a sink for this stream, now try to install it */
976 sinkpad = gst_element_get_pad (sink, "sink");
977 linkres = gst_pad_link (srcpad, sinkpad);
978 gst_object_unref (sinkpad);
980 /* try to link the pad of the sink to the stream */
981 if (GST_PAD_LINK_FAILED (linkres))
984 /* we got the sink succesfully linked, now keep the sink
985 * in out internal list */
986 play_bin->sinks = g_list_prepend (play_bin->sinks, sink);
993 GST_DEBUG_OBJECT (play_bin, "state change failure when adding sink");
1001 /* could not link this stream */
1002 caps = gst_pad_get_caps (srcpad);
1003 capsstr = gst_caps_to_string (caps);
1004 g_warning ("could not link %s: %d", capsstr, linkres);
1005 GST_DEBUG_OBJECT (play_bin,
1006 "link failed when adding sink, caps %s, reason %d", capsstr, linkres);
1010 gst_element_set_state (sink, GST_STATE_NULL);
1011 gst_bin_remove (GST_BIN (play_bin), sink);
1017 setup_sinks (GstPlayBaseBin * play_base_bin, GstPlayBaseGroup * group)
1019 GstPlayBin *play_bin = GST_PLAY_BIN (play_base_bin);
1020 GList *streaminfo = NULL, *s;
1021 gboolean need_vis = FALSE;
1022 gboolean need_text = FALSE;
1023 GstPad *textsrcpad = NULL, *textsinkpad = NULL, *pad;
1025 gboolean res = TRUE;
1027 /* get rid of existing sinks */
1028 if (play_bin->sinks) {
1029 remove_sinks (play_bin);
1031 GST_DEBUG ("setupsinks");
1033 /* find out what to do */
1034 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0 &&
1035 group->type[GST_STREAM_TYPE_TEXT - 1].npads > 0) {
1037 } else if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads == 0 &&
1038 group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0 &&
1039 play_bin->visualisation != NULL) {
1043 /* now actually connect everything */
1044 g_object_get (G_OBJECT (play_base_bin), "stream-info", &streaminfo, NULL);
1045 for (s = streaminfo; s; s = g_list_next (s)) {
1046 GObject *obj = G_OBJECT (s->data);
1050 g_object_get (obj, "type", &type, NULL);
1051 g_object_get (obj, "object", &object, NULL);
1055 if (group->type[GST_STREAM_TYPE_AUDIO - 1].npads > 0) {
1057 sink = gen_vis_element (play_bin);
1059 sink = gen_audio_element (play_bin);
1061 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_AUDIO - 1].preroll,
1063 res = add_sink (play_bin, sink, pad);
1064 gst_object_unref (pad);
1068 if (group->type[GST_STREAM_TYPE_VIDEO - 1].npads > 0) {
1070 sink = gen_text_element (play_bin);
1072 textsinkpad = gst_element_get_pad (sink, "text_sink");
1074 gst_element_get_pad (group->type[GST_STREAM_TYPE_TEXT - 1].preroll,
1076 gst_pad_link (textsrcpad, textsinkpad);
1077 gst_object_unref (textsinkpad);
1078 gst_object_unref (textsrcpad);
1080 sink = gen_video_element (play_bin);
1082 pad = gst_element_get_pad (group->type[GST_STREAM_TYPE_VIDEO - 1].preroll,
1084 res = add_sink (play_bin, sink, pad);
1085 gst_object_unref (pad);
1088 /* remove the sinks now, pipeline get_state will now wait for the
1089 * sinks to preroll */
1090 if (play_bin->fakesink) {
1091 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1092 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
1093 play_bin->fakesink = NULL;
1099 /* Send an event to our sinks until one of them works; don't then send to the
1100 * remaining sinks (unlike GstBin)
1103 gst_play_bin_send_event_to_sink (GstPlayBin * play_bin, GstEvent * event)
1105 GList *sinks = play_bin->sinks;
1106 gboolean res = TRUE;
1109 GstElement *sink = GST_ELEMENT_CAST (sinks->data);
1111 gst_event_ref (event);
1112 if ((res = gst_element_send_event (sink, event)))
1115 sinks = g_list_next (sinks);
1118 gst_event_unref (event);
1124 do_playbin_seek (GstElement * element, GstEvent * event)
1129 gboolean was_playing = FALSE;
1132 gst_event_parse_seek (event, &rate, NULL, &flags, NULL, NULL, NULL, NULL);
1134 flush = flags & GST_SEEK_FLAG_FLUSH;
1139 /* need to call _get_state() since a bin state is only updated
1140 * with this call. */
1141 gst_element_get_state (element, &state, NULL, 0);
1142 was_playing = state == GST_STATE_PLAYING;
1145 gst_element_set_state (element, GST_STATE_PAUSED);
1149 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1152 /* need to reset the stream time to 0 after a flushing seek */
1153 gst_pipeline_set_new_stream_time (GST_PIPELINE (element), 0);
1155 /* and continue playing */
1156 gst_element_set_state (element, GST_STATE_PLAYING);
1161 /* We only want to send the event to a single sink (overriding GstBin's
1162 * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek
1163 * events appropriately. So, this is a messy duplication of code. */
1165 gst_play_bin_send_event (GstElement * element, GstEvent * event)
1167 gboolean res = FALSE;
1168 GstEventType event_type = GST_EVENT_TYPE (event);
1171 switch (event_type) {
1172 case GST_EVENT_SEEK:
1173 res = do_playbin_seek (element, event);
1176 res = gst_play_bin_send_event_to_sink (GST_PLAY_BIN (element), event);
1183 static GstStateChangeReturn
1184 gst_play_bin_change_state (GstElement * element, GstStateChange transition)
1186 GstStateChangeReturn ret;
1187 GstPlayBin *play_bin;
1189 play_bin = GST_PLAY_BIN (element);
1192 switch (transition) {
1193 case GST_STATE_CHANGE_READY_TO_PAUSED:
1194 /* this really is the easiest way to make the state change return
1195 * ASYNC until we added the sinks */
1196 if (!play_bin->fakesink) {
1197 play_bin->fakesink = gst_element_factory_make ("fakesink", "test");
1198 gst_bin_add (GST_BIN (play_bin), play_bin->fakesink);
1205 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1206 if (ret == GST_STATE_CHANGE_FAILURE)
1209 switch (transition) {
1210 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1211 /* Set audio sink state to NULL to release the sound device,
1212 * but only if we own it (else we might be in chain-transition). */
1213 //if (play_bin->audio_sink != NULL &&
1214 // GST_STATE (play_bin->audio_sink) == GST_STATE_PAUSED) {
1215 // gst_element_set_state (play_bin->audio_sink, GST_STATE_NULL);
1218 case GST_STATE_CHANGE_PAUSED_TO_READY:
1219 /* Check for NULL because the state transition may be done by
1220 * gst_bin_dispose which is called by gst_play_bin_dispose, and in that
1221 * case, we don't want to run remove_sinks.
1222 * FIXME: should the NULL test be done in remove_sinks? Should we just
1223 * set the state to NULL in gst_play_bin_dispose?
1225 if (play_bin->cache != NULL) {
1226 remove_sinks (play_bin);
1228 if (play_bin->fakesink) {
1229 gst_element_set_state (play_bin->fakesink, GST_STATE_NULL);
1230 gst_bin_remove (GST_BIN (play_bin), play_bin->fakesink);
1231 play_bin->fakesink = NULL;
1242 plugin_init (GstPlugin * plugin)
1244 GST_DEBUG_CATEGORY_INIT (gst_play_bin_debug, "playbin", 0, "play bin");
1246 return gst_element_register (plugin, "playbin", GST_RANK_NONE,
1250 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1253 "player bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,