2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000,2001,2002,2003,2004,2005 Wim Taymans <wim@fluendo.com>
4 * 2007 Wim Taymans <wim.taymans@gmail.com>
6 * gsttee.c: Tee element, one in N out
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
26 * @see_also: #GstIdentity
28 * Split data to multiple pads. Branching the data flow is useful when e.g.
29 * capturing a video where the video is shown on the screen and also encoded and
30 * written to a file. Another example is playing music and hooking up a
31 * visualisation module.
33 * One needs to use separate queue elements (or a multiqueue) in each branch to
34 * provide separate threads for each branch. Otherwise a blocked dataflow in one
35 * branch would stall the other branches.
38 * <title>Example launch line</title>
40 * gst-launch filesrc location=song.ogg ! decodebin2 ! tee name=t ! queue ! autoaudiosink t. ! queue ! audioconvert ! goom ! ffmpegcolorspace ! autovideosink
41 * ]| Play a song.ogg from local dir and render visualisations using the goom
54 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
59 GST_DEBUG_CATEGORY_STATIC (gst_tee_debug);
60 #define GST_CAT_DEFAULT gst_tee_debug
62 #define GST_TYPE_TEE_PULL_MODE (gst_tee_pull_mode_get_type())
64 gst_tee_pull_mode_get_type (void)
66 static GType type = 0;
67 static const GEnumValue data[] = {
68 {GST_TEE_PULL_MODE_NEVER, "Never activate in pull mode", "never"},
69 {GST_TEE_PULL_MODE_SINGLE, "Only one src pad can be active in pull mode",
75 type = g_enum_register_static ("GstTeePullMode", data);
80 /* lock to protect request pads from being removed while downstream */
81 #define GST_TEE_DYN_LOCK(tee) g_mutex_lock ((tee)->dyn_lock)
82 #define GST_TEE_DYN_UNLOCK(tee) g_mutex_unlock ((tee)->dyn_lock)
84 #define DEFAULT_PROP_NUM_SRC_PADS 0
85 #define DEFAULT_PROP_HAS_SINK_LOOP FALSE
86 #define DEFAULT_PROP_HAS_CHAIN TRUE
87 #define DEFAULT_PROP_SILENT TRUE
88 #define DEFAULT_PROP_LAST_MESSAGE NULL
89 #define DEFAULT_PULL_MODE GST_TEE_PULL_MODE_NEVER
103 static GstStaticPadTemplate tee_src_template =
104 GST_STATIC_PAD_TEMPLATE ("src_%u",
107 GST_STATIC_CAPS_ANY);
109 /* structure and quark to keep track of which pads have been pushed */
110 static GQuark push_data;
113 GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element"); \
114 push_data = g_quark_from_static_string ("tee-push-data");
115 #define gst_tee_parent_class parent_class
116 G_DEFINE_TYPE_WITH_CODE (GstTee, gst_tee, GST_TYPE_ELEMENT, _do_init);
118 static GParamSpec *pspec_last_message = NULL;
119 static GParamSpec *pspec_alloc_pad = NULL;
124 GstFlowReturn result;
128 static GstPad *gst_tee_request_new_pad (GstElement * element,
129 GstPadTemplate * temp, const gchar * unused, const GstCaps * caps);
130 static void gst_tee_release_pad (GstElement * element, GstPad * pad);
132 static void gst_tee_finalize (GObject * object);
133 static void gst_tee_set_property (GObject * object, guint prop_id,
134 const GValue * value, GParamSpec * pspec);
135 static void gst_tee_get_property (GObject * object, guint prop_id,
136 GValue * value, GParamSpec * pspec);
137 static void gst_tee_dispose (GObject * object);
139 static GstFlowReturn gst_tee_chain (GstPad * pad, GstBuffer * buffer);
140 static GstFlowReturn gst_tee_chain_list (GstPad * pad, GstBufferList * list);
141 static gboolean gst_tee_sink_event (GstPad * pad, GstEvent * event);
142 static gboolean gst_tee_sink_query (GstPad * pad, GstQuery * query);
143 static gboolean gst_tee_sink_acceptcaps (GstPad * pad, GstCaps * caps);
144 static gboolean gst_tee_sink_activate_push (GstPad * pad, gboolean active);
145 static gboolean gst_tee_src_query (GstPad * pad, GstQuery * query);
146 static gboolean gst_tee_src_activate_pull (GstPad * pad, gboolean active);
147 static GstFlowReturn gst_tee_src_get_range (GstPad * pad, guint64 offset,
148 guint length, GstBuffer ** buf);
151 gst_tee_dispose (GObject * object)
156 for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
157 GstPad *pad = GST_PAD (item->data);
158 if (GST_PAD_IS_SRC (pad)) {
159 gst_element_release_request_pad (GST_ELEMENT (object), pad);
164 G_OBJECT_CLASS (parent_class)->dispose (object);
168 gst_tee_finalize (GObject * object)
172 tee = GST_TEE (object);
174 g_free (tee->last_message);
176 g_mutex_free (tee->dyn_lock);
178 G_OBJECT_CLASS (parent_class)->finalize (object);
182 gst_tee_class_init (GstTeeClass * klass)
184 GObjectClass *gobject_class;
185 GstElementClass *gstelement_class;
187 gobject_class = G_OBJECT_CLASS (klass);
188 gstelement_class = GST_ELEMENT_CLASS (klass);
190 gobject_class->finalize = gst_tee_finalize;
191 gobject_class->set_property = gst_tee_set_property;
192 gobject_class->get_property = gst_tee_get_property;
193 gobject_class->dispose = gst_tee_dispose;
195 g_object_class_install_property (gobject_class, PROP_NUM_SRC_PADS,
196 g_param_spec_int ("num-src-pads", "Num Src Pads",
197 "The number of source pads", 0, G_MAXINT, DEFAULT_PROP_NUM_SRC_PADS,
198 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
199 g_object_class_install_property (gobject_class, PROP_HAS_SINK_LOOP,
200 g_param_spec_boolean ("has-sink-loop", "Has Sink Loop",
201 "If the element should spawn a thread (unimplemented and deprecated)",
202 DEFAULT_PROP_HAS_SINK_LOOP,
203 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
204 g_object_class_install_property (gobject_class, PROP_HAS_CHAIN,
205 g_param_spec_boolean ("has-chain", "Has Chain",
206 "If the element can operate in push mode", DEFAULT_PROP_HAS_CHAIN,
207 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
208 g_object_class_install_property (gobject_class, PROP_SILENT,
209 g_param_spec_boolean ("silent", "Silent",
210 "Don't produce last_message events", DEFAULT_PROP_SILENT,
211 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
212 pspec_last_message = g_param_spec_string ("last-message", "Last Message",
213 "The message describing current status", DEFAULT_PROP_LAST_MESSAGE,
214 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
215 g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE,
217 g_object_class_install_property (gobject_class, PROP_PULL_MODE,
218 g_param_spec_enum ("pull-mode", "Pull mode",
219 "Behavior of tee in pull mode", GST_TYPE_TEE_PULL_MODE,
221 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
222 pspec_alloc_pad = g_param_spec_object ("alloc-pad", "Allocation Src Pad",
223 "The pad used for gst_pad_alloc_buffer", GST_TYPE_PAD,
224 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
225 g_object_class_install_property (gobject_class, PROP_ALLOC_PAD,
228 gst_element_class_set_details_simple (gstelement_class,
231 "1-to-N pipe fitting",
232 "Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>");
233 gst_element_class_add_pad_template (gstelement_class,
234 gst_static_pad_template_get (&sinktemplate));
235 gst_element_class_add_pad_template (gstelement_class,
236 gst_static_pad_template_get (&tee_src_template));
238 gstelement_class->request_new_pad =
239 GST_DEBUG_FUNCPTR (gst_tee_request_new_pad);
240 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_tee_release_pad);
244 gst_tee_init (GstTee * tee)
246 tee->dyn_lock = g_mutex_new ();
248 tee->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
249 tee->sink_mode = GST_PAD_ACTIVATE_NONE;
251 gst_pad_set_event_function (tee->sinkpad,
252 GST_DEBUG_FUNCPTR (gst_tee_sink_event));
253 gst_pad_set_query_function (tee->sinkpad,
254 GST_DEBUG_FUNCPTR (gst_tee_sink_query));
255 gst_pad_set_getcaps_function (tee->sinkpad,
256 GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
257 gst_pad_set_activatepush_function (tee->sinkpad,
258 GST_DEBUG_FUNCPTR (gst_tee_sink_activate_push));
259 gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
260 gst_pad_set_chain_list_function (tee->sinkpad,
261 GST_DEBUG_FUNCPTR (gst_tee_chain_list));
262 gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
264 tee->last_message = NULL;
268 gst_tee_notify_alloc_pad (GstTee * tee)
270 #if !GLIB_CHECK_VERSION(2,26,0)
271 g_object_notify ((GObject *) tee, "alloc-pad");
273 g_object_notify_by_pspec ((GObject *) tee, pspec_alloc_pad);
278 forward_sticky_events (GstPad * pad, GstEvent * event, gpointer user_data)
280 GstPad *srcpad = GST_PAD_CAST (user_data);
282 gst_pad_push_event (srcpad, gst_event_ref (event));
288 gst_tee_request_new_pad (GstElement * element, GstPadTemplate * templ,
289 const gchar * unused, const GstCaps * caps)
294 GstPadActivateMode mode;
298 tee = GST_TEE (element);
300 GST_DEBUG_OBJECT (tee, "requesting pad");
302 GST_OBJECT_LOCK (tee);
303 name = g_strdup_printf ("src_%u", tee->pad_counter++);
305 srcpad = gst_pad_new_from_template (templ, name);
308 mode = tee->sink_mode;
310 /* install the data, we automatically free it when the pad is disposed because
311 * of _release_pad or when the element goes away. */
312 data = g_new0 (PushData, 1);
313 data->pushed = FALSE;
314 data->result = GST_FLOW_NOT_LINKED;
315 data->removed = FALSE;
316 g_object_set_qdata_full (G_OBJECT (srcpad), push_data, data, g_free);
318 GST_OBJECT_UNLOCK (tee);
321 case GST_PAD_ACTIVATE_PULL:
322 /* we already have a src pad in pull mode, and our pull mode can only be
323 SINGLE, so fall through to activate this new pad in push mode */
324 case GST_PAD_ACTIVATE_PUSH:
325 res = gst_pad_activate_push (srcpad, TRUE);
333 goto activate_failed;
335 gst_pad_set_getcaps_function (srcpad,
336 GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
337 gst_pad_set_activatepull_function (srcpad,
338 GST_DEBUG_FUNCPTR (gst_tee_src_activate_pull));
339 gst_pad_set_query_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_src_query));
340 gst_pad_set_getrange_function (srcpad,
341 GST_DEBUG_FUNCPTR (gst_tee_src_get_range));
342 /* Forward sticky events to the new srcpad */
343 gst_pad_sticky_events_foreach (tee->sinkpad, forward_sticky_events, srcpad);
344 gst_element_add_pad (GST_ELEMENT_CAST (tee), srcpad);
351 gboolean changed = FALSE;
353 GST_OBJECT_LOCK (tee);
354 GST_DEBUG_OBJECT (tee, "warning failed to activate request pad");
355 if (tee->allocpad == srcpad) {
356 tee->allocpad = NULL;
359 GST_OBJECT_UNLOCK (tee);
360 gst_object_unref (srcpad);
362 gst_tee_notify_alloc_pad (tee);
369 gst_tee_release_pad (GstElement * element, GstPad * pad)
373 gboolean changed = FALSE;
375 tee = GST_TEE (element);
377 GST_DEBUG_OBJECT (tee, "releasing pad");
379 /* wait for pending pad_alloc to finish */
380 GST_TEE_DYN_LOCK (tee);
381 data = g_object_get_qdata (G_OBJECT (pad), push_data);
383 GST_OBJECT_LOCK (tee);
384 /* mark the pad as removed so that future pad_alloc fails with NOT_LINKED. */
385 data->removed = TRUE;
386 if (tee->allocpad == pad) {
387 tee->allocpad = NULL;
390 GST_OBJECT_UNLOCK (tee);
392 gst_object_ref (pad);
393 gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad);
395 gst_pad_set_active (pad, FALSE);
396 GST_TEE_DYN_UNLOCK (tee);
398 gst_object_unref (pad);
401 gst_tee_notify_alloc_pad (tee);
406 gst_tee_set_property (GObject * object, guint prop_id, const GValue * value,
409 GstTee *tee = GST_TEE (object);
411 GST_OBJECT_LOCK (tee);
413 case PROP_HAS_SINK_LOOP:
414 tee->has_sink_loop = g_value_get_boolean (value);
415 if (tee->has_sink_loop) {
416 g_warning ("tee will never implement has-sink-loop==TRUE");
420 tee->has_chain = g_value_get_boolean (value);
423 tee->silent = g_value_get_boolean (value);
426 tee->pull_mode = g_value_get_enum (value);
430 GstPad *pad = g_value_get_object (value);
431 GST_OBJECT_LOCK (pad);
432 if (GST_OBJECT_PARENT (pad) == GST_OBJECT_CAST (object))
435 GST_WARNING_OBJECT (object, "Tried to set alloc pad %s which"
436 " is not my pad", GST_OBJECT_NAME (pad));
437 GST_OBJECT_UNLOCK (pad);
441 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
444 GST_OBJECT_UNLOCK (tee);
448 gst_tee_get_property (GObject * object, guint prop_id, GValue * value,
451 GstTee *tee = GST_TEE (object);
453 GST_OBJECT_LOCK (tee);
455 case PROP_NUM_SRC_PADS:
456 g_value_set_int (value, GST_ELEMENT (tee)->numsrcpads);
458 case PROP_HAS_SINK_LOOP:
459 g_value_set_boolean (value, tee->has_sink_loop);
462 g_value_set_boolean (value, tee->has_chain);
465 g_value_set_boolean (value, tee->silent);
467 case PROP_LAST_MESSAGE:
468 g_value_set_string (value, tee->last_message);
471 g_value_set_enum (value, tee->pull_mode);
474 g_value_set_object (value, tee->allocpad);
477 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
480 GST_OBJECT_UNLOCK (tee);
484 gst_tee_sink_event (GstPad * pad, GstEvent * event)
488 switch (GST_EVENT_TYPE (event)) {
490 res = gst_pad_event_default (pad, event);
497 /* on the sink we accept caps that are acceptable to all srcpads */
499 gst_tee_sink_acceptcaps (GstPad * pad, GstCaps * caps)
504 GValue item = { 0, };
506 tee = GST_TEE_CAST (GST_PAD_PARENT (pad));
508 it = gst_element_iterate_src_pads (GST_ELEMENT_CAST (tee));
512 while (!done && res) {
513 switch (gst_iterator_next (it, &item)) {
514 case GST_ITERATOR_OK:
515 res &= gst_pad_peer_accept_caps (g_value_get_object (&item), caps);
516 g_value_reset (&item);
518 case GST_ITERATOR_RESYNC:
520 gst_iterator_resync (it);
522 case GST_ITERATOR_ERROR:
526 case GST_ITERATOR_DONE:
531 g_value_unset (&item);
532 gst_iterator_free (it);
538 gst_tee_sink_query (GstPad * pad, GstQuery * query)
542 switch (GST_QUERY_TYPE (query)) {
543 case GST_QUERY_ACCEPT_CAPS:
547 gst_query_parse_accept_caps (query, &caps);
548 res = gst_tee_sink_acceptcaps (pad, caps);
549 gst_query_set_accept_caps_result (query, res);
554 res = gst_pad_query_default (pad, query);
562 gst_tee_do_message (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
564 GST_OBJECT_LOCK (tee);
565 g_free (tee->last_message);
568 g_strdup_printf ("chain-list ******* (%s:%s)t %p",
569 GST_DEBUG_PAD_NAME (pad), data);
572 g_strdup_printf ("chain ******* (%s:%s)t (%" G_GSIZE_FORMAT
573 " bytes, %" G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad),
574 gst_buffer_get_size (data), GST_BUFFER_TIMESTAMP (data), data);
576 GST_OBJECT_UNLOCK (tee);
578 #if !GLIB_CHECK_VERSION(2,26,0)
579 g_object_notify ((GObject *) tee, "last-message");
581 g_object_notify_by_pspec ((GObject *) tee, pspec_last_message);
586 gst_tee_do_push (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
591 if (pad == tee->pull_pad) {
592 /* don't push on the pad we're pulling from */
594 } else if (is_list) {
596 gst_pad_push_list (pad,
597 gst_buffer_list_ref (GST_BUFFER_LIST_CAST (data)));
599 res = gst_pad_push (pad, gst_buffer_ref (GST_BUFFER_CAST (data)));
605 clear_pads (GstPad * pad, GstTee * tee)
609 data = g_object_get_qdata ((GObject *) pad, push_data);
611 /* the data must be there or we have a screwed up internal state */
612 g_assert (data != NULL);
614 data->pushed = FALSE;
615 data->result = GST_FLOW_NOT_LINKED;
619 gst_tee_handle_data (GstTee * tee, gpointer data, gboolean is_list)
623 GstFlowReturn ret, cret;
625 if (G_UNLIKELY (!tee->silent))
626 gst_tee_do_message (tee, tee->sinkpad, data, is_list);
628 GST_OBJECT_LOCK (tee);
629 pads = GST_ELEMENT_CAST (tee)->srcpads;
631 /* special case for zero pads */
632 if (G_UNLIKELY (!pads))
635 /* special case for just one pad that avoids reffing the buffer */
637 GstPad *pad = GST_PAD_CAST (pads->data);
639 GST_OBJECT_UNLOCK (tee);
641 if (pad == tee->pull_pad) {
643 } else if (is_list) {
644 ret = gst_pad_push_list (pad, GST_BUFFER_LIST_CAST (data));
646 ret = gst_pad_push (pad, GST_BUFFER_CAST (data));
651 /* mark all pads as 'not pushed on yet' */
652 g_list_foreach (pads, (GFunc) clear_pads, tee);
655 cret = GST_FLOW_NOT_LINKED;
656 pads = GST_ELEMENT_CAST (tee)->srcpads;
657 cookie = GST_ELEMENT_CAST (tee)->pads_cookie;
663 pad = GST_PAD_CAST (pads->data);
665 /* get the private data, something is really wrong with the internal state
666 * when it is not there */
667 pdata = g_object_get_qdata ((GObject *) pad, push_data);
668 g_assert (pdata != NULL);
670 if (G_LIKELY (!pdata->pushed)) {
671 /* not yet pushed, release lock and start pushing */
672 gst_object_ref (pad);
673 GST_OBJECT_UNLOCK (tee);
675 GST_LOG_OBJECT (tee, "Starting to push %s %p",
676 is_list ? "list" : "buffer", data);
678 ret = gst_tee_do_push (tee, pad, data, is_list);
680 GST_LOG_OBJECT (tee, "Pushing item %p yielded result %s", data,
681 gst_flow_get_name (ret));
683 GST_OBJECT_LOCK (tee);
684 /* keep track of which pad we pushed and the result value. We need to do
685 * this before we release the refcount on the pad, the PushData is
686 * destroyed when the last ref of the pad goes away. */
687 pdata->pushed = TRUE;
689 gst_object_unref (pad);
691 /* already pushed, use previous return value */
693 GST_LOG_OBJECT (tee, "pad already pushed with %s",
694 gst_flow_get_name (ret));
697 /* before we go combining the return value, check if the pad list is still
698 * the same. It could be possible that the pad we just pushed was removed
699 * and the return value it not valid anymore */
700 if (G_UNLIKELY (GST_ELEMENT_CAST (tee)->pads_cookie != cookie)) {
701 GST_LOG_OBJECT (tee, "pad list changed");
702 /* the list of pads changed, restart iteration. Pads that we already
703 * pushed on and are still in the new list, will not be pushed on
708 /* stop pushing more buffers when we have a fatal error */
709 if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED))
712 /* keep all other return values, overwriting the previous one. */
713 if (G_LIKELY (ret != GST_FLOW_NOT_LINKED)) {
714 GST_LOG_OBJECT (tee, "Replacing ret val %d with %d", cret, ret);
717 pads = g_list_next (pads);
719 GST_OBJECT_UNLOCK (tee);
721 gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
723 /* no need to unset gvalue */
729 GST_DEBUG_OBJECT (tee, "there are no pads, return not-linked");
730 ret = GST_FLOW_NOT_LINKED;
735 GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret));
736 GST_OBJECT_UNLOCK (tee);
737 gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
743 gst_tee_chain (GstPad * pad, GstBuffer * buffer)
748 tee = GST_TEE_CAST (GST_OBJECT_PARENT (pad));
750 GST_DEBUG_OBJECT (tee, "received buffer %p", buffer);
752 res = gst_tee_handle_data (tee, buffer, FALSE);
754 GST_DEBUG_OBJECT (tee, "handled buffer %s", gst_flow_get_name (res));
760 gst_tee_chain_list (GstPad * pad, GstBufferList * list)
765 tee = GST_TEE_CAST (gst_pad_get_parent (pad));
767 GST_DEBUG_OBJECT (tee, "received list %p", list);
769 res = gst_tee_handle_data (tee, list, TRUE);
771 GST_DEBUG_OBJECT (tee, "handled list %s", gst_flow_get_name (res));
773 gst_object_unref (tee);
779 gst_tee_sink_activate_push (GstPad * pad, gboolean active)
783 tee = GST_TEE (GST_OBJECT_PARENT (pad));
785 GST_OBJECT_LOCK (tee);
786 tee->sink_mode = active && GST_PAD_ACTIVATE_PUSH;
788 if (active && !tee->has_chain)
790 GST_OBJECT_UNLOCK (tee);
797 GST_OBJECT_UNLOCK (tee);
798 GST_INFO_OBJECT (tee,
799 "Tee cannot operate in push mode with has-chain==FALSE");
805 gst_tee_src_activate_pull (GstPad * pad, gboolean active)
811 tee = GST_TEE (gst_pad_get_parent (pad));
813 GST_OBJECT_LOCK (tee);
815 if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER)
818 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && active && tee->pull_pad)
819 goto cannot_pull_multiple_srcs;
821 sinkpad = gst_object_ref (tee->sinkpad);
823 GST_OBJECT_UNLOCK (tee);
825 res = gst_pad_activate_pull (sinkpad, active);
826 gst_object_unref (sinkpad);
829 goto sink_activate_failed;
831 GST_OBJECT_LOCK (tee);
833 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE)
836 if (pad == tee->pull_pad)
837 tee->pull_pad = NULL;
839 tee->sink_mode = active & GST_PAD_ACTIVATE_PULL;
840 GST_OBJECT_UNLOCK (tee);
842 gst_object_unref (tee);
849 GST_OBJECT_UNLOCK (tee);
850 GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
852 gst_object_unref (tee);
855 cannot_pull_multiple_srcs:
857 GST_OBJECT_UNLOCK (tee);
858 GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
859 "pull-mode set to SINGLE");
860 gst_object_unref (tee);
863 sink_activate_failed:
865 GST_INFO_OBJECT (tee, "Failed to %sactivate sink pad in pull mode",
867 gst_object_unref (tee);
873 gst_tee_src_query (GstPad * pad, GstQuery * query)
879 tee = GST_TEE (gst_pad_get_parent (pad));
881 switch (GST_QUERY_TYPE (query)) {
882 case GST_QUERY_SCHEDULING:
886 GST_OBJECT_LOCK (tee);
888 if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER) {
889 GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
892 } else if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad) {
893 GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
894 "pull-mode set to SINGLE");
898 sinkpad = gst_object_ref (tee->sinkpad);
899 GST_OBJECT_UNLOCK (tee);
902 /* ask peer if we can operate in pull mode */
903 res = gst_pad_peer_query (sinkpad, query);
907 gst_object_unref (sinkpad);
911 res = gst_pad_query_default (pad, query);
915 gst_object_unref (tee);
921 gst_tee_push_eos (const GValue * vpad, GstTee * tee)
923 GstPad *pad = g_value_get_object (vpad);
925 if (pad != tee->pull_pad)
926 gst_pad_push_event (pad, gst_event_new_eos ());
930 gst_tee_pull_eos (GstTee * tee)
934 iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
935 gst_iterator_foreach (iter, (GstIteratorForeachFunction) gst_tee_push_eos,
937 gst_iterator_free (iter);
941 gst_tee_src_get_range (GstPad * pad, guint64 offset, guint length,
947 tee = GST_TEE (gst_pad_get_parent (pad));
949 ret = gst_pad_pull_range (tee->sinkpad, offset, length, buf);
951 if (ret == GST_FLOW_OK)
952 ret = gst_tee_handle_data (tee, gst_buffer_ref (*buf), FALSE);
953 else if (ret == GST_FLOW_EOS)
954 gst_tee_pull_eos (tee);
956 gst_object_unref (tee);