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 = GST_STATIC_PAD_TEMPLATE ("src%d",
106 GST_STATIC_CAPS_ANY);
108 #define _do_init(bla) \
109 GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element");
111 GST_BOILERPLATE_FULL (GstTee, gst_tee, GstElement, GST_TYPE_ELEMENT, _do_init);
113 /* structure and quark to keep track of which pads have been pushed */
114 static GQuark push_data;
116 static GParamSpec *pspec_last_message = NULL;
117 static GParamSpec *pspec_alloc_pad = NULL;
122 GstFlowReturn result;
126 static GstPad *gst_tee_request_new_pad (GstElement * element,
127 GstPadTemplate * temp, const gchar * unused);
128 static void gst_tee_release_pad (GstElement * element, GstPad * pad);
130 static void gst_tee_finalize (GObject * object);
131 static void gst_tee_set_property (GObject * object, guint prop_id,
132 const GValue * value, GParamSpec * pspec);
133 static void gst_tee_get_property (GObject * object, guint prop_id,
134 GValue * value, GParamSpec * pspec);
135 static void gst_tee_dispose (GObject * object);
137 static GstFlowReturn gst_tee_chain (GstPad * pad, GstBuffer * buffer);
138 static GstFlowReturn gst_tee_chain_list (GstPad * pad, GstBufferList * list);
139 static GstFlowReturn gst_tee_buffer_alloc (GstPad * pad, guint64 offset,
140 guint size, GstCaps * caps, GstBuffer ** buf);
141 static gboolean gst_tee_sink_acceptcaps (GstPad * pad, GstCaps * caps);
142 static gboolean gst_tee_sink_activate_push (GstPad * pad, gboolean active);
143 static gboolean gst_tee_src_check_get_range (GstPad * pad);
144 static gboolean gst_tee_src_activate_pull (GstPad * pad, gboolean active);
145 static GstFlowReturn gst_tee_src_get_range (GstPad * pad, guint64 offset,
146 guint length, GstBuffer ** buf);
150 gst_tee_base_init (gpointer g_class)
152 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
154 gst_element_class_set_details_simple (gstelement_class,
157 "1-to-N pipe fitting",
158 "Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>");
159 gst_element_class_add_pad_template (gstelement_class,
160 gst_static_pad_template_get (&sinktemplate));
161 gst_element_class_add_pad_template (gstelement_class,
162 gst_static_pad_template_get (&tee_src_template));
164 push_data = g_quark_from_static_string ("tee-push-data");
168 gst_tee_dispose (GObject * object)
173 for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
174 GstPad *pad = GST_PAD (item->data);
175 if (GST_PAD_IS_SRC (pad)) {
176 gst_element_release_request_pad (GST_ELEMENT (object), pad);
181 G_OBJECT_CLASS (parent_class)->dispose (object);
185 gst_tee_finalize (GObject * object)
189 tee = GST_TEE (object);
191 g_free (tee->last_message);
193 g_mutex_free (tee->dyn_lock);
195 G_OBJECT_CLASS (parent_class)->finalize (object);
199 gst_tee_class_init (GstTeeClass * klass)
201 GObjectClass *gobject_class;
202 GstElementClass *gstelement_class;
204 gobject_class = G_OBJECT_CLASS (klass);
205 gstelement_class = GST_ELEMENT_CLASS (klass);
207 gobject_class->finalize = gst_tee_finalize;
208 gobject_class->set_property = gst_tee_set_property;
209 gobject_class->get_property = gst_tee_get_property;
210 gobject_class->dispose = gst_tee_dispose;
212 g_object_class_install_property (gobject_class, PROP_NUM_SRC_PADS,
213 g_param_spec_int ("num-src-pads", "Num Src Pads",
214 "The number of source pads", 0, G_MAXINT, DEFAULT_PROP_NUM_SRC_PADS,
215 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
216 g_object_class_install_property (gobject_class, PROP_HAS_SINK_LOOP,
217 g_param_spec_boolean ("has-sink-loop", "Has Sink Loop",
218 "If the element should spawn a thread (unimplemented and deprecated)",
219 DEFAULT_PROP_HAS_SINK_LOOP,
220 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
221 g_object_class_install_property (gobject_class, PROP_HAS_CHAIN,
222 g_param_spec_boolean ("has-chain", "Has Chain",
223 "If the element can operate in push mode", DEFAULT_PROP_HAS_CHAIN,
224 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
225 g_object_class_install_property (gobject_class, PROP_SILENT,
226 g_param_spec_boolean ("silent", "Silent",
227 "Don't produce last_message events", DEFAULT_PROP_SILENT,
228 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
229 pspec_last_message = g_param_spec_string ("last-message", "Last Message",
230 "The message describing current status", DEFAULT_PROP_LAST_MESSAGE,
231 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
232 g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE,
234 g_object_class_install_property (gobject_class, PROP_PULL_MODE,
235 g_param_spec_enum ("pull-mode", "Pull mode",
236 "Behavior of tee in pull mode", GST_TYPE_TEE_PULL_MODE,
238 G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
239 pspec_alloc_pad = g_param_spec_object ("alloc-pad", "Allocation Src Pad",
240 "The pad used for gst_pad_alloc_buffer", GST_TYPE_PAD,
241 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
242 g_object_class_install_property (gobject_class, PROP_ALLOC_PAD,
245 gstelement_class->request_new_pad =
246 GST_DEBUG_FUNCPTR (gst_tee_request_new_pad);
247 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_tee_release_pad);
251 gst_tee_init (GstTee * tee, GstTeeClass * g_class)
253 tee->dyn_lock = g_mutex_new ();
255 tee->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
256 tee->sink_mode = GST_ACTIVATE_NONE;
258 gst_pad_set_setcaps_function (tee->sinkpad,
259 GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
260 gst_pad_set_getcaps_function (tee->sinkpad,
261 GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
262 gst_pad_set_acceptcaps_function (tee->sinkpad,
263 GST_DEBUG_FUNCPTR (gst_tee_sink_acceptcaps));
264 gst_pad_set_bufferalloc_function (tee->sinkpad,
265 GST_DEBUG_FUNCPTR (gst_tee_buffer_alloc));
266 gst_pad_set_activatepush_function (tee->sinkpad,
267 GST_DEBUG_FUNCPTR (gst_tee_sink_activate_push));
268 gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
269 gst_pad_set_chain_list_function (tee->sinkpad,
270 GST_DEBUG_FUNCPTR (gst_tee_chain_list));
271 gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
273 tee->last_message = NULL;
277 gst_tee_notify_alloc_pad (GstTee * tee)
279 #if !GLIB_CHECK_VERSION(2,26,0)
280 g_object_notify ((GObject *) tee, "alloc-pad");
282 g_object_notify_by_pspec ((GObject *) tee, pspec_alloc_pad);
287 gst_tee_request_new_pad (GstElement * element, GstPadTemplate * templ,
288 const gchar * unused)
293 GstActivateMode mode;
297 tee = GST_TEE (element);
299 GST_DEBUG_OBJECT (tee, "requesting pad");
301 GST_OBJECT_LOCK (tee);
302 name = g_strdup_printf ("src%d", tee->pad_counter++);
304 srcpad = gst_pad_new_from_template (templ, name);
307 mode = tee->sink_mode;
309 /* install the data, we automatically free it when the pad is disposed because
310 * of _release_pad or when the element goes away. */
311 data = g_new0 (PushData, 1);
312 data->pushed = FALSE;
313 data->result = GST_FLOW_NOT_LINKED;
314 data->removed = FALSE;
315 g_object_set_qdata_full (G_OBJECT (srcpad), push_data, data, g_free);
317 GST_OBJECT_UNLOCK (tee);
320 case GST_ACTIVATE_PULL:
321 /* we already have a src pad in pull mode, and our pull mode can only be
322 SINGLE, so fall through to activate this new pad in push mode */
323 case GST_ACTIVATE_PUSH:
324 res = gst_pad_activate_push (srcpad, TRUE);
332 goto activate_failed;
334 gst_pad_set_setcaps_function (srcpad,
335 GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
336 gst_pad_set_getcaps_function (srcpad,
337 GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
338 gst_pad_set_activatepull_function (srcpad,
339 GST_DEBUG_FUNCPTR (gst_tee_src_activate_pull));
340 gst_pad_set_checkgetrange_function (srcpad,
341 GST_DEBUG_FUNCPTR (gst_tee_src_check_get_range));
342 gst_pad_set_getrange_function (srcpad,
343 GST_DEBUG_FUNCPTR (gst_tee_src_get_range));
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_pad_set_active (pad, FALSE);
394 gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad);
395 GST_TEE_DYN_UNLOCK (tee);
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);
480 /* we have no previous source pad we can use to proxy the pad alloc. Loop over
481 * the source pads, try to alloc a buffer on each one of them. Keep a reference
482 * to the first pad that succeeds, we will be using it to alloc more buffers
483 * later. must be called with the OBJECT_LOCK on tee. */
485 gst_tee_find_buffer_alloc (GstTee * tee, guint64 offset, guint size,
486 GstCaps * caps, GstBuffer ** buf)
492 res = GST_FLOW_NOT_LINKED;
495 pads = GST_ELEMENT_CAST (tee)->srcpads;
496 cookie = GST_ELEMENT_CAST (tee)->pads_cookie;
502 pad = GST_PAD_CAST (pads->data);
503 gst_object_ref (pad);
504 GST_DEBUG_OBJECT (tee, "try alloc on pad %s:%s", GST_DEBUG_PAD_NAME (pad));
505 GST_OBJECT_UNLOCK (tee);
507 GST_TEE_DYN_LOCK (tee);
508 data = g_object_get_qdata ((GObject *) pad, push_data);
510 res = gst_pad_alloc_buffer (pad, offset, size, caps, buf);
512 res = GST_FLOW_NOT_LINKED;
513 GST_TEE_DYN_UNLOCK (tee);
515 GST_DEBUG_OBJECT (tee, "got return value %d", res);
517 gst_object_unref (pad);
519 GST_OBJECT_LOCK (tee);
520 if (GST_ELEMENT_CAST (tee)->pads_cookie != cookie) {
521 GST_DEBUG_OBJECT (tee, "pad list changed, restart");
522 /* pad list changed, restart. If the pad alloc function returned OK we
523 * need to unref the buffer */
524 if (res == GST_FLOW_OK)
525 gst_buffer_unref (*buf);
529 if (!data->removed && res == GST_FLOW_OK) {
530 GST_DEBUG_OBJECT (tee, "we have a buffer on pad %s:%s",
531 GST_DEBUG_PAD_NAME (pad));
532 /* we have a buffer, keep the pad for later and exit the loop. */
534 GST_OBJECT_UNLOCK (tee);
535 gst_tee_notify_alloc_pad (tee);
536 GST_OBJECT_LOCK (tee);
539 /* no valid buffer, try another pad */
540 pads = g_list_next (pads);
547 gst_tee_buffer_alloc (GstPad * pad, guint64 offset, guint size,
548 GstCaps * caps, GstBuffer ** buf)
554 tee = GST_TEE_CAST (GST_PAD_PARENT (pad));
556 res = GST_FLOW_NOT_LINKED;
558 GST_OBJECT_LOCK (tee);
559 if ((allocpad = tee->allocpad)) {
562 /* if we had a previous pad we used for allocating a buffer, continue using
564 GST_DEBUG_OBJECT (tee, "using pad %s:%s for alloc",
565 GST_DEBUG_PAD_NAME (allocpad));
566 gst_object_ref (allocpad);
567 GST_OBJECT_UNLOCK (tee);
569 GST_TEE_DYN_LOCK (tee);
570 data = g_object_get_qdata ((GObject *) allocpad, push_data);
572 res = gst_pad_alloc_buffer (allocpad, offset, size, caps, buf);
574 res = GST_FLOW_NOT_LINKED;
575 GST_TEE_DYN_UNLOCK (tee);
577 gst_object_unref (allocpad);
579 GST_OBJECT_LOCK (tee);
581 /* either we failed to alloc on the the previous pad or we did not have a
583 if (res == GST_FLOW_NOT_LINKED) {
584 /* find a new pad to alloc a buffer on */
585 GST_DEBUG_OBJECT (tee, "finding pad for alloc");
586 res = gst_tee_find_buffer_alloc (tee, offset, size, caps, buf);
588 GST_OBJECT_UNLOCK (tee);
593 /* on the sink we accept caps that are acceptable to all srcpads */
595 gst_tee_sink_acceptcaps (GstPad * pad, GstCaps * caps)
601 tee = GST_TEE_CAST (GST_PAD_PARENT (pad));
603 it = gst_element_iterate_src_pads (GST_ELEMENT_CAST (tee));
607 while (!done && res) {
610 switch (gst_iterator_next (it, &item)) {
611 case GST_ITERATOR_OK:
612 res &= gst_pad_peer_accept_caps (GST_PAD_CAST (item), caps);
613 gst_object_unref (item);
615 case GST_ITERATOR_RESYNC:
617 gst_iterator_resync (it);
619 case GST_ITERATOR_ERROR:
623 case GST_ITERATOR_DONE:
628 gst_iterator_free (it);
634 gst_tee_do_message (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
636 GST_OBJECT_LOCK (tee);
637 g_free (tee->last_message);
640 g_strdup_printf ("chain-list ******* (%s:%s)t %p",
641 GST_DEBUG_PAD_NAME (pad), data);
644 g_strdup_printf ("chain ******* (%s:%s)t (%d bytes, %"
645 G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad),
646 GST_BUFFER_SIZE (data), GST_BUFFER_TIMESTAMP (data), data);
648 GST_OBJECT_UNLOCK (tee);
650 #if !GLIB_CHECK_VERSION(2,26,0)
651 g_object_notify ((GObject *) tee, "last_message");
653 g_object_notify_by_pspec ((GObject *) tee, pspec_last_message);
658 gst_tee_do_push (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
663 if (pad == tee->pull_pad) {
664 /* don't push on the pad we're pulling from */
666 } else if (is_list) {
668 gst_pad_push_list (pad,
669 gst_buffer_list_ref (GST_BUFFER_LIST_CAST (data)));
671 res = gst_pad_push (pad, gst_buffer_ref (GST_BUFFER_CAST (data)));
677 clear_pads (GstPad * pad, GstTee * tee)
681 data = g_object_get_qdata ((GObject *) pad, push_data);
683 /* the data must be there or we have a screwed up internal state */
684 g_assert (data != NULL);
686 data->pushed = FALSE;
687 data->result = GST_FLOW_NOT_LINKED;
691 gst_tee_handle_data (GstTee * tee, gpointer data, gboolean is_list)
695 GstFlowReturn ret, cret;
697 if (G_UNLIKELY (!tee->silent))
698 gst_tee_do_message (tee, tee->sinkpad, data, is_list);
700 GST_OBJECT_LOCK (tee);
701 pads = GST_ELEMENT_CAST (tee)->srcpads;
703 /* special case for zero pads */
704 if (G_UNLIKELY (!pads))
707 /* special case for just one pad that avoids reffing the buffer */
709 GstPad *pad = GST_PAD_CAST (pads->data);
711 GST_OBJECT_UNLOCK (tee);
713 if (pad == tee->pull_pad) {
715 } else if (is_list) {
716 ret = gst_pad_push_list (pad, GST_BUFFER_LIST_CAST (data));
718 ret = gst_pad_push (pad, GST_BUFFER_CAST (data));
723 /* mark all pads as 'not pushed on yet' */
724 g_list_foreach (pads, (GFunc) clear_pads, tee);
727 cret = GST_FLOW_NOT_LINKED;
728 pads = GST_ELEMENT_CAST (tee)->srcpads;
729 cookie = GST_ELEMENT_CAST (tee)->pads_cookie;
735 pad = GST_PAD_CAST (pads->data);
737 /* get the private data, something is really wrong with the internal state
738 * when it is not there */
739 pdata = g_object_get_qdata ((GObject *) pad, push_data);
740 g_assert (pdata != NULL);
742 if (G_LIKELY (!pdata->pushed)) {
743 /* not yet pushed, release lock and start pushing */
744 gst_object_ref (pad);
745 GST_OBJECT_UNLOCK (tee);
747 GST_LOG_OBJECT (tee, "Starting to push %s %p",
748 is_list ? "list" : "buffer", data);
750 ret = gst_tee_do_push (tee, pad, data, is_list);
752 GST_LOG_OBJECT (tee, "Pushing item %p yielded result %s", data,
753 gst_flow_get_name (ret));
755 GST_OBJECT_LOCK (tee);
756 /* keep track of which pad we pushed and the result value. We need to do
757 * this before we release the refcount on the pad, the PushData is
758 * destroyed when the last ref of the pad goes away. */
759 pdata->pushed = TRUE;
761 gst_object_unref (pad);
763 /* already pushed, use previous return value */
765 GST_LOG_OBJECT (tee, "pad already pushed with %s",
766 gst_flow_get_name (ret));
769 /* before we go combining the return value, check if the pad list is still
770 * the same. It could be possible that the pad we just pushed was removed
771 * and the return value it not valid anymore */
772 if (G_UNLIKELY (GST_ELEMENT_CAST (tee)->pads_cookie != cookie)) {
773 GST_LOG_OBJECT (tee, "pad list changed");
774 /* the list of pads changed, restart iteration. Pads that we already
775 * pushed on and are still in the new list, will not be pushed on
780 /* stop pushing more buffers when we have a fatal error */
781 if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED))
784 /* keep all other return values, overwriting the previous one. */
785 if (G_LIKELY (ret != GST_FLOW_NOT_LINKED)) {
786 GST_LOG_OBJECT (tee, "Replacing ret val %d with %d", cret, ret);
789 pads = g_list_next (pads);
791 GST_OBJECT_UNLOCK (tee);
793 gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
795 /* no need to unset gvalue */
801 GST_DEBUG_OBJECT (tee, "there are no pads, return not-linked");
802 ret = GST_FLOW_NOT_LINKED;
807 GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret));
808 GST_OBJECT_UNLOCK (tee);
809 gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
815 gst_tee_chain (GstPad * pad, GstBuffer * buffer)
820 tee = GST_TEE_CAST (GST_OBJECT_PARENT (pad));
822 GST_DEBUG_OBJECT (tee, "received buffer %p", buffer);
824 res = gst_tee_handle_data (tee, buffer, FALSE);
826 GST_DEBUG_OBJECT (tee, "handled buffer %s", gst_flow_get_name (res));
832 gst_tee_chain_list (GstPad * pad, GstBufferList * list)
837 tee = GST_TEE_CAST (gst_pad_get_parent (pad));
839 GST_DEBUG_OBJECT (tee, "received list %p", list);
841 res = gst_tee_handle_data (tee, list, TRUE);
843 GST_DEBUG_OBJECT (tee, "handled list %s", gst_flow_get_name (res));
845 gst_object_unref (tee);
851 gst_tee_sink_activate_push (GstPad * pad, gboolean active)
855 tee = GST_TEE (GST_OBJECT_PARENT (pad));
857 GST_OBJECT_LOCK (tee);
858 tee->sink_mode = active && GST_ACTIVATE_PUSH;
860 if (active && !tee->has_chain)
862 GST_OBJECT_UNLOCK (tee);
869 GST_OBJECT_UNLOCK (tee);
870 GST_INFO_OBJECT (tee,
871 "Tee cannot operate in push mode with has-chain==FALSE");
877 gst_tee_src_activate_pull (GstPad * pad, gboolean active)
883 tee = GST_TEE (gst_pad_get_parent (pad));
885 GST_OBJECT_LOCK (tee);
887 if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER)
890 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && active && tee->pull_pad)
891 goto cannot_pull_multiple_srcs;
893 sinkpad = gst_object_ref (tee->sinkpad);
895 GST_OBJECT_UNLOCK (tee);
897 res = gst_pad_activate_pull (sinkpad, active);
898 gst_object_unref (sinkpad);
901 goto sink_activate_failed;
903 GST_OBJECT_LOCK (tee);
905 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE)
908 if (pad == tee->pull_pad)
909 tee->pull_pad = NULL;
911 tee->sink_mode = active && GST_ACTIVATE_PULL;
912 GST_OBJECT_UNLOCK (tee);
914 gst_object_unref (tee);
921 GST_OBJECT_UNLOCK (tee);
922 GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
924 gst_object_unref (tee);
927 cannot_pull_multiple_srcs:
929 GST_OBJECT_UNLOCK (tee);
930 GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
931 "pull-mode set to SINGLE");
932 gst_object_unref (tee);
935 sink_activate_failed:
937 GST_INFO_OBJECT (tee, "Failed to %sactivate sink pad in pull mode",
939 gst_object_unref (tee);
945 gst_tee_src_check_get_range (GstPad * pad)
951 tee = GST_TEE (gst_pad_get_parent (pad));
953 GST_OBJECT_LOCK (tee);
955 if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER)
958 if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad)
959 goto cannot_pull_multiple_srcs;
961 sinkpad = gst_object_ref (tee->sinkpad);
963 GST_OBJECT_UNLOCK (tee);
965 res = gst_pad_check_pull_range (sinkpad);
966 gst_object_unref (sinkpad);
968 gst_object_unref (tee);
975 GST_OBJECT_UNLOCK (tee);
976 GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
978 gst_object_unref (tee);
981 cannot_pull_multiple_srcs:
983 GST_OBJECT_UNLOCK (tee);
984 GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
985 "pull-mode set to SINGLE");
986 gst_object_unref (tee);
992 gst_tee_push_eos (GstPad * pad, GstTee * tee)
994 if (pad != tee->pull_pad)
995 gst_pad_push_event (pad, gst_event_new_eos ());
996 gst_object_unref (pad);
1000 gst_tee_pull_eos (GstTee * tee)
1004 iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
1005 gst_iterator_foreach (iter, (GFunc) gst_tee_push_eos, tee);
1006 gst_iterator_free (iter);
1009 static GstFlowReturn
1010 gst_tee_src_get_range (GstPad * pad, guint64 offset, guint length,
1016 tee = GST_TEE (gst_pad_get_parent (pad));
1018 ret = gst_pad_pull_range (tee->sinkpad, offset, length, buf);
1020 if (ret == GST_FLOW_OK)
1021 ret = gst_tee_handle_data (tee, gst_buffer_ref (*buf), FALSE);
1022 else if (ret == GST_FLOW_UNEXPECTED)
1023 gst_tee_pull_eos (tee);
1025 gst_object_unref (tee);