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_activate_push (GstPad * pad, gboolean active);
144 static gboolean gst_tee_src_query (GstPad * pad, GstQuery * query);
145 static gboolean gst_tee_src_activate_pull (GstPad * pad, gboolean active);
146 static GstFlowReturn gst_tee_src_get_range (GstPad * pad, guint64 offset,
147 guint length, GstBuffer ** buf);
150 gst_tee_dispose (GObject * object)
155 for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
156 GstPad *pad = GST_PAD (item->data);
157 if (GST_PAD_IS_SRC (pad)) {
158 gst_element_release_request_pad (GST_ELEMENT (object), pad);
163 G_OBJECT_CLASS (parent_class)->dispose (object);
167 gst_tee_finalize (GObject * object)
171 tee = GST_TEE (object);
173 g_free (tee->last_message);
175 g_mutex_free (tee->dyn_lock);
177 G_OBJECT_CLASS (parent_class)->finalize (object);
181 gst_tee_class_init (GstTeeClass * klass)
183 GObjectClass *gobject_class;
184 GstElementClass *gstelement_class;
186 gobject_class = G_OBJECT_CLASS (klass);
187 gstelement_class = GST_ELEMENT_CLASS (klass);
189 gobject_class->finalize = gst_tee_finalize;
190 gobject_class->set_property = gst_tee_set_property;
191 gobject_class->get_property = gst_tee_get_property;
192 gobject_class->dispose = gst_tee_dispose;
194 g_object_class_install_property (gobject_class, PROP_NUM_SRC_PADS,
195 g_param_spec_int ("num-src-pads", "Num Src Pads",
196 "The number of source pads", 0, G_MAXINT, DEFAULT_PROP_NUM_SRC_PADS,
197 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
198 g_object_class_install_property (gobject_class, PROP_HAS_SINK_LOOP,
199 g_param_spec_boolean ("has-sink-loop", "Has Sink Loop",
200 "If the element should spawn a thread (unimplemented and deprecated)",
201 DEFAULT_PROP_HAS_SINK_LOOP,
202 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
203 g_object_class_install_property (gobject_class, PROP_HAS_CHAIN,
204 g_param_spec_boolean ("has-chain", "Has Chain",
205 "If the element can operate in push mode", DEFAULT_PROP_HAS_CHAIN,
206 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
207 g_object_class_install_property (gobject_class, PROP_SILENT,
208 g_param_spec_boolean ("silent", "Silent",
209 "Don't produce last_message events", DEFAULT_PROP_SILENT,
210 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
211 pspec_last_message = g_param_spec_string ("last-message", "Last Message",
212 "The message describing current status", DEFAULT_PROP_LAST_MESSAGE,
213 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
214 g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE,
216 g_object_class_install_property (gobject_class, PROP_PULL_MODE,
217 g_param_spec_enum ("pull-mode", "Pull mode",
218 "Behavior of tee in pull mode", GST_TYPE_TEE_PULL_MODE,
220 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
221 pspec_alloc_pad = g_param_spec_object ("alloc-pad", "Allocation Src Pad",
222 "The pad used for gst_pad_alloc_buffer", GST_TYPE_PAD,
223 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
224 g_object_class_install_property (gobject_class, PROP_ALLOC_PAD,
227 gst_element_class_set_details_simple (gstelement_class,
230 "1-to-N pipe fitting",
231 "Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>");
232 gst_element_class_add_pad_template (gstelement_class,
233 gst_static_pad_template_get (&sinktemplate));
234 gst_element_class_add_pad_template (gstelement_class,
235 gst_static_pad_template_get (&tee_src_template));
237 gstelement_class->request_new_pad =
238 GST_DEBUG_FUNCPTR (gst_tee_request_new_pad);
239 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_tee_release_pad);
243 gst_tee_init (GstTee * tee)
245 tee->dyn_lock = g_mutex_new ();
247 tee->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
248 tee->sink_mode = GST_PAD_ACTIVATE_NONE;
250 gst_pad_set_event_function (tee->sinkpad,
251 GST_DEBUG_FUNCPTR (gst_tee_sink_event));
252 gst_pad_set_query_function (tee->sinkpad,
253 GST_DEBUG_FUNCPTR (gst_tee_sink_query));
254 gst_pad_set_activatepush_function (tee->sinkpad,
255 GST_DEBUG_FUNCPTR (gst_tee_sink_activate_push));
256 gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
257 gst_pad_set_chain_list_function (tee->sinkpad,
258 GST_DEBUG_FUNCPTR (gst_tee_chain_list));
259 GST_OBJECT_FLAG_SET (tee->sinkpad, GST_PAD_PROXY_CAPS);
260 gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
262 tee->last_message = NULL;
266 gst_tee_notify_alloc_pad (GstTee * tee)
268 #if !GLIB_CHECK_VERSION(2,26,0)
269 g_object_notify ((GObject *) tee, "alloc-pad");
271 g_object_notify_by_pspec ((GObject *) tee, pspec_alloc_pad);
276 forward_sticky_events (GstPad * pad, GstEvent * event, gpointer user_data)
278 GstPad *srcpad = GST_PAD_CAST (user_data);
280 gst_pad_push_event (srcpad, gst_event_ref (event));
286 gst_tee_request_new_pad (GstElement * element, GstPadTemplate * templ,
287 const gchar * unused, const GstCaps * caps)
292 GstPadActivateMode mode;
296 tee = GST_TEE (element);
298 GST_DEBUG_OBJECT (tee, "requesting pad");
300 GST_OBJECT_LOCK (tee);
301 name = g_strdup_printf ("src_%u", tee->pad_counter++);
303 srcpad = gst_pad_new_from_template (templ, name);
306 mode = tee->sink_mode;
308 /* install the data, we automatically free it when the pad is disposed because
309 * of _release_pad or when the element goes away. */
310 data = g_new0 (PushData, 1);
311 data->pushed = FALSE;
312 data->result = GST_FLOW_NOT_LINKED;
313 data->removed = FALSE;
314 g_object_set_qdata_full (G_OBJECT (srcpad), push_data, data, g_free);
316 GST_OBJECT_UNLOCK (tee);
319 case GST_PAD_ACTIVATE_PULL:
320 /* we already have a src pad in pull mode, and our pull mode can only be
321 SINGLE, so fall through to activate this new pad in push mode */
322 case GST_PAD_ACTIVATE_PUSH:
323 res = gst_pad_activate_push (srcpad, TRUE);
331 goto activate_failed;
333 gst_pad_set_activatepull_function (srcpad,
334 GST_DEBUG_FUNCPTR (gst_tee_src_activate_pull));
335 gst_pad_set_query_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_src_query));
336 gst_pad_set_getrange_function (srcpad,
337 GST_DEBUG_FUNCPTR (gst_tee_src_get_range));
338 /* Forward sticky events to the new srcpad */
339 gst_pad_sticky_events_foreach (tee->sinkpad, forward_sticky_events, srcpad);
340 GST_OBJECT_FLAG_SET (srcpad, GST_PAD_PROXY_CAPS);
341 gst_element_add_pad (GST_ELEMENT_CAST (tee), srcpad);
348 gboolean changed = FALSE;
350 GST_OBJECT_LOCK (tee);
351 GST_DEBUG_OBJECT (tee, "warning failed to activate request pad");
352 if (tee->allocpad == srcpad) {
353 tee->allocpad = NULL;
356 GST_OBJECT_UNLOCK (tee);
357 gst_object_unref (srcpad);
359 gst_tee_notify_alloc_pad (tee);
366 gst_tee_release_pad (GstElement * element, GstPad * pad)
370 gboolean changed = FALSE;
372 tee = GST_TEE (element);
374 GST_DEBUG_OBJECT (tee, "releasing pad");
376 /* wait for pending pad_alloc to finish */
377 GST_TEE_DYN_LOCK (tee);
378 data = g_object_get_qdata (G_OBJECT (pad), push_data);
380 GST_OBJECT_LOCK (tee);
381 /* mark the pad as removed so that future pad_alloc fails with NOT_LINKED. */
382 data->removed = TRUE;
383 if (tee->allocpad == pad) {
384 tee->allocpad = NULL;
387 GST_OBJECT_UNLOCK (tee);
389 gst_object_ref (pad);
390 gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad);
392 gst_pad_set_active (pad, FALSE);
393 GST_TEE_DYN_UNLOCK (tee);
395 gst_object_unref (pad);
398 gst_tee_notify_alloc_pad (tee);
403 gst_tee_set_property (GObject * object, guint prop_id, const GValue * value,
406 GstTee *tee = GST_TEE (object);
408 GST_OBJECT_LOCK (tee);
410 case PROP_HAS_SINK_LOOP:
411 tee->has_sink_loop = g_value_get_boolean (value);
412 if (tee->has_sink_loop) {
413 g_warning ("tee will never implement has-sink-loop==TRUE");
417 tee->has_chain = g_value_get_boolean (value);
420 tee->silent = g_value_get_boolean (value);
423 tee->pull_mode = g_value_get_enum (value);
427 GstPad *pad = g_value_get_object (value);
428 GST_OBJECT_LOCK (pad);
429 if (GST_OBJECT_PARENT (pad) == GST_OBJECT_CAST (object))
432 GST_WARNING_OBJECT (object, "Tried to set alloc pad %s which"
433 " is not my pad", GST_OBJECT_NAME (pad));
434 GST_OBJECT_UNLOCK (pad);
438 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
441 GST_OBJECT_UNLOCK (tee);
445 gst_tee_get_property (GObject * object, guint prop_id, GValue * value,
448 GstTee *tee = GST_TEE (object);
450 GST_OBJECT_LOCK (tee);
452 case PROP_NUM_SRC_PADS:
453 g_value_set_int (value, GST_ELEMENT (tee)->numsrcpads);
455 case PROP_HAS_SINK_LOOP:
456 g_value_set_boolean (value, tee->has_sink_loop);
459 g_value_set_boolean (value, tee->has_chain);
462 g_value_set_boolean (value, tee->silent);
464 case PROP_LAST_MESSAGE:
465 g_value_set_string (value, tee->last_message);
468 g_value_set_enum (value, tee->pull_mode);
471 g_value_set_object (value, tee->allocpad);
474 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
477 GST_OBJECT_UNLOCK (tee);
481 gst_tee_sink_event (GstPad * pad, GstEvent * event)
485 switch (GST_EVENT_TYPE (event)) {
487 res = gst_pad_event_default (pad, event);
495 gst_tee_sink_query (GstPad * pad, GstQuery * query)
499 switch (GST_QUERY_TYPE (query)) {
501 res = gst_pad_query_default (pad, query);
508 gst_tee_do_message (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
510 GST_OBJECT_LOCK (tee);
511 g_free (tee->last_message);
514 g_strdup_printf ("chain-list ******* (%s:%s)t %p",
515 GST_DEBUG_PAD_NAME (pad), data);
518 g_strdup_printf ("chain ******* (%s:%s)t (%" G_GSIZE_FORMAT
519 " bytes, %" G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad),
520 gst_buffer_get_size (data), GST_BUFFER_TIMESTAMP (data), data);
522 GST_OBJECT_UNLOCK (tee);
524 #if !GLIB_CHECK_VERSION(2,26,0)
525 g_object_notify ((GObject *) tee, "last-message");
527 g_object_notify_by_pspec ((GObject *) tee, pspec_last_message);
532 gst_tee_do_push (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
537 if (pad == tee->pull_pad) {
538 /* don't push on the pad we're pulling from */
540 } else if (is_list) {
542 gst_pad_push_list (pad,
543 gst_buffer_list_ref (GST_BUFFER_LIST_CAST (data)));
545 res = gst_pad_push (pad, gst_buffer_ref (GST_BUFFER_CAST (data)));
551 clear_pads (GstPad * pad, GstTee * tee)
555 data = g_object_get_qdata ((GObject *) pad, push_data);
557 /* the data must be there or we have a screwed up internal state */
558 g_assert (data != NULL);
560 data->pushed = FALSE;
561 data->result = GST_FLOW_NOT_LINKED;
565 gst_tee_handle_data (GstTee * tee, gpointer data, gboolean is_list)
569 GstFlowReturn ret, cret;
571 if (G_UNLIKELY (!tee->silent))
572 gst_tee_do_message (tee, tee->sinkpad, data, is_list);
574 GST_OBJECT_LOCK (tee);
575 pads = GST_ELEMENT_CAST (tee)->srcpads;
577 /* special case for zero pads */
578 if (G_UNLIKELY (!pads))
581 /* special case for just one pad that avoids reffing the buffer */
583 GstPad *pad = GST_PAD_CAST (pads->data);
585 GST_OBJECT_UNLOCK (tee);
587 if (pad == tee->pull_pad) {
589 } else if (is_list) {
590 ret = gst_pad_push_list (pad, GST_BUFFER_LIST_CAST (data));
592 ret = gst_pad_push (pad, GST_BUFFER_CAST (data));
597 /* mark all pads as 'not pushed on yet' */
598 g_list_foreach (pads, (GFunc) clear_pads, tee);
601 cret = GST_FLOW_NOT_LINKED;
602 pads = GST_ELEMENT_CAST (tee)->srcpads;
603 cookie = GST_ELEMENT_CAST (tee)->pads_cookie;
609 pad = GST_PAD_CAST (pads->data);
611 /* get the private data, something is really wrong with the internal state
612 * when it is not there */
613 pdata = g_object_get_qdata ((GObject *) pad, push_data);
614 g_assert (pdata != NULL);
616 if (G_LIKELY (!pdata->pushed)) {
617 /* not yet pushed, release lock and start pushing */
618 gst_object_ref (pad);
619 GST_OBJECT_UNLOCK (tee);
621 GST_LOG_OBJECT (tee, "Starting to push %s %p",
622 is_list ? "list" : "buffer", data);
624 ret = gst_tee_do_push (tee, pad, data, is_list);
626 GST_LOG_OBJECT (tee, "Pushing item %p yielded result %s", data,
627 gst_flow_get_name (ret));
629 GST_OBJECT_LOCK (tee);
630 /* keep track of which pad we pushed and the result value. We need to do
631 * this before we release the refcount on the pad, the PushData is
632 * destroyed when the last ref of the pad goes away. */
633 pdata->pushed = TRUE;
635 gst_object_unref (pad);
637 /* already pushed, use previous return value */
639 GST_LOG_OBJECT (tee, "pad already pushed with %s",
640 gst_flow_get_name (ret));
643 /* before we go combining the return value, check if the pad list is still
644 * the same. It could be possible that the pad we just pushed was removed
645 * and the return value it not valid anymore */
646 if (G_UNLIKELY (GST_ELEMENT_CAST (tee)->pads_cookie != cookie)) {
647 GST_LOG_OBJECT (tee, "pad list changed");
648 /* the list of pads changed, restart iteration. Pads that we already
649 * pushed on and are still in the new list, will not be pushed on
654 /* stop pushing more buffers when we have a fatal error */
655 if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED))
658 /* keep all other return values, overwriting the previous one. */
659 if (G_LIKELY (ret != GST_FLOW_NOT_LINKED)) {
660 GST_LOG_OBJECT (tee, "Replacing ret val %d with %d", cret, ret);
663 pads = g_list_next (pads);
665 GST_OBJECT_UNLOCK (tee);
667 gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
669 /* no need to unset gvalue */
675 GST_DEBUG_OBJECT (tee, "there are no pads, return not-linked");
676 ret = GST_FLOW_NOT_LINKED;
681 GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret));
682 GST_OBJECT_UNLOCK (tee);
683 gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
689 gst_tee_chain (GstPad * pad, GstBuffer * buffer)
694 tee = GST_TEE_CAST (GST_OBJECT_PARENT (pad));
696 GST_DEBUG_OBJECT (tee, "received buffer %p", buffer);
698 res = gst_tee_handle_data (tee, buffer, FALSE);
700 GST_DEBUG_OBJECT (tee, "handled buffer %s", gst_flow_get_name (res));
706 gst_tee_chain_list (GstPad * pad, GstBufferList * list)
711 tee = GST_TEE_CAST (GST_PAD_PARENT (pad));
713 GST_DEBUG_OBJECT (tee, "received list %p", list);
715 res = gst_tee_handle_data (tee, list, TRUE);
717 GST_DEBUG_OBJECT (tee, "handled list %s", gst_flow_get_name (res));
723 gst_tee_sink_activate_push (GstPad * pad, gboolean active)
727 tee = GST_TEE (GST_OBJECT_PARENT (pad));
729 GST_OBJECT_LOCK (tee);
730 tee->sink_mode = active && GST_PAD_ACTIVATE_PUSH;
732 if (active && !tee->has_chain)
734 GST_OBJECT_UNLOCK (tee);
741 GST_OBJECT_UNLOCK (tee);
742 GST_INFO_OBJECT (tee,
743 "Tee cannot operate in push mode with has-chain==FALSE");
749 gst_tee_src_activate_pull (GstPad * pad, gboolean active)
755 tee = GST_TEE (GST_PAD_PARENT (pad));
757 GST_OBJECT_LOCK (tee);
759 if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER)
762 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && active && tee->pull_pad)
763 goto cannot_pull_multiple_srcs;
765 sinkpad = gst_object_ref (tee->sinkpad);
767 GST_OBJECT_UNLOCK (tee);
769 res = gst_pad_activate_pull (sinkpad, active);
770 gst_object_unref (sinkpad);
773 goto sink_activate_failed;
775 GST_OBJECT_LOCK (tee);
777 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE)
780 if (pad == tee->pull_pad)
781 tee->pull_pad = NULL;
783 tee->sink_mode = active & GST_PAD_ACTIVATE_PULL;
784 GST_OBJECT_UNLOCK (tee);
791 GST_OBJECT_UNLOCK (tee);
792 GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
796 cannot_pull_multiple_srcs:
798 GST_OBJECT_UNLOCK (tee);
799 GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
800 "pull-mode set to SINGLE");
803 sink_activate_failed:
805 GST_INFO_OBJECT (tee, "Failed to %sactivate sink pad in pull mode",
812 gst_tee_src_query (GstPad * pad, GstQuery * query)
818 tee = GST_TEE (GST_PAD_PARENT (pad));
820 switch (GST_QUERY_TYPE (query)) {
821 case GST_QUERY_SCHEDULING:
825 GST_OBJECT_LOCK (tee);
827 if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER) {
828 GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
831 } else if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad) {
832 GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
833 "pull-mode set to SINGLE");
837 sinkpad = gst_object_ref (tee->sinkpad);
838 GST_OBJECT_UNLOCK (tee);
841 /* ask peer if we can operate in pull mode */
842 res = gst_pad_peer_query (sinkpad, query);
846 gst_object_unref (sinkpad);
850 res = gst_pad_query_default (pad, query);
858 gst_tee_push_eos (const GValue * vpad, GstTee * tee)
860 GstPad *pad = g_value_get_object (vpad);
862 if (pad != tee->pull_pad)
863 gst_pad_push_event (pad, gst_event_new_eos ());
867 gst_tee_pull_eos (GstTee * tee)
871 iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
872 gst_iterator_foreach (iter, (GstIteratorForeachFunction) gst_tee_push_eos,
874 gst_iterator_free (iter);
878 gst_tee_src_get_range (GstPad * pad, guint64 offset, guint length,
884 tee = GST_TEE (GST_PAD_PARENT (pad));
886 ret = gst_pad_pull_range (tee->sinkpad, offset, length, buf);
888 if (ret == GST_FLOW_OK)
889 ret = gst_tee_handle_data (tee, gst_buffer_ref (*buf), FALSE);
890 else if (ret == GST_FLOW_EOS)
891 gst_tee_pull_eos (tee);