2 * Copyright (C) 2006 Edward Hervey <edward@fluendo.com>
3 * Copyright (C) 2007 Jan Schmidt <jan@fluendo.com>
4 * Copyright (C) 2007 Wim Taymans <wim@fluendo.com>
5 * Copyright (C) 2011 Sebastian Dröge <sebastian.droege@collabora.co.uk>
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
26 * SECTION:element-multiqueue
27 * @see_also: #GstQueue
31 * Multiqueue is similar to a normal #GstQueue with the following additional
35 * <itemizedlist><title>Multiple streamhandling</title>
37 * The element handles queueing data on more than one stream at once. To
38 * achieve such a feature it has request sink pads (sink%u) and
39 * 'sometimes' src pads (src%u).
41 * When requesting a given sinkpad with gst_element_get_request_pad(),
42 * the associated srcpad for that stream will be created.
43 * Example: requesting sink1 will generate src1.
48 * <itemizedlist><title>Non-starvation on multiple streams</title>
50 * If more than one stream is used with the element, the streams' queues
51 * will be dynamically grown (up to a limit), in order to ensure that no
52 * stream is risking data starvation. This guarantees that at any given
53 * time there are at least N bytes queued and available for each individual
56 * If an EOS event comes through a srcpad, the associated queue will be
57 * considered as 'not-empty' in the queue-size-growing algorithm.
62 * <itemizedlist><title>Non-linked srcpads graceful handling</title>
64 * In order to better support dynamic switching between streams, the multiqueue
65 * (unlike the current GStreamer queue) continues to push buffers on non-linked
66 * pads rather than shutting down.
68 * In addition, to prevent a non-linked stream from very quickly consuming all
69 * available buffers and thus 'racing ahead' of the other streams, the element
70 * must ensure that buffers and inlined events for a non-linked stream are pushed
71 * in the same order as they were received, relative to the other streams
72 * controlled by the element. This means that a buffer cannot be pushed to a
73 * non-linked pad any sooner than buffers in any other stream which were received
81 * Data is queued until one of the limits specified by the
82 * #GstMultiQueue:max-size-buffers, #GstMultiQueue:max-size-bytes and/or
83 * #GstMultiQueue:max-size-time properties has been reached. Any attempt to push
84 * more buffers into the queue will block the pushing thread until more space
85 * becomes available. #GstMultiQueue:extra-size-buffers,
88 * #GstMultiQueue:extra-size-bytes and #GstMultiQueue:extra-size-time are
92 * The default queue size limits are 5 buffers, 10MB of data, or
93 * two second worth of data, whichever is reached first. Note that the number
94 * of buffers will dynamically grow depending on the fill level of
98 * The #GstMultiQueue::underrun signal is emitted when all of the queues
99 * are empty. The #GstMultiQueue::overrun signal is emitted when one of the
101 * Both signals are emitted from the context of the streaming thread.
105 * Last reviewed on 2008-01-25 (0.10.17)
114 #include "gstmultiqueue.h"
115 #include <gst/glib-compat-private.h>
119 * @sinkpad: associated sink #GstPad
120 * @srcpad: associated source #GstPad
122 * Structure containing all information and properties about
125 typedef struct _GstSingleQueue GstSingleQueue;
127 struct _GstSingleQueue
129 /* unique identifier of the queue */
132 GstMultiQueue *mqueue;
137 /* flowreturn of previous srcpad push */
138 GstFlowReturn srcresult;
139 /* If something was actually pushed on
140 * this pad after flushing/pad activation
141 * and the srcresult corresponds to something
147 GstSegment sink_segment;
148 GstSegment src_segment;
150 /* position of src/sink */
151 GstClockTime sinktime, srctime;
152 /* TRUE if either position needs to be recalculated */
153 gboolean sink_tainted, src_tainted;
157 GstDataQueueSize max_size, extra_size;
158 GstClockTime cur_time;
162 /* Protected by global lock */
163 guint32 nextid; /* ID of the next object waiting to be pushed */
164 guint32 oldid; /* ID of the last object pushed (last in a series) */
165 guint32 last_oldid; /* Previously observed old_id, reset to MAXUINT32 on flush */
166 GstClockTime next_time; /* End running time of next buffer to be pushed */
167 GstClockTime last_time; /* Start running time of last pushed buffer */
168 GCond turn; /* SingleQueue turn waiting conditional */
170 /* for serialized queries */
176 /* Extension of GstDataQueueItem structure for our usage */
177 typedef struct _GstMultiQueueItem GstMultiQueueItem;
179 struct _GstMultiQueueItem
181 GstMiniObject *object;
186 GDestroyNotify destroy;
192 static GstSingleQueue *gst_single_queue_new (GstMultiQueue * mqueue, guint id);
193 static void gst_single_queue_free (GstSingleQueue * squeue);
195 static void wake_up_next_non_linked (GstMultiQueue * mq);
196 static void compute_high_id (GstMultiQueue * mq);
197 static void compute_high_time (GstMultiQueue * mq);
198 static void single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq);
199 static void single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq);
201 static void update_buffering (GstMultiQueue * mq, GstSingleQueue * sq);
203 static void gst_single_queue_flush_queue (GstSingleQueue * sq, gboolean full);
205 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink_%u",
208 GST_STATIC_CAPS_ANY);
210 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src_%u",
213 GST_STATIC_CAPS_ANY);
215 GST_DEBUG_CATEGORY_STATIC (multi_queue_debug);
216 #define GST_CAT_DEFAULT (multi_queue_debug)
218 /* Signals and args */
226 /* default limits, we try to keep up to 2 seconds of data and if there is not
227 * time, up to 10 MB. The number of buffers is dynamically scaled to make sure
228 * there is data in the queues. Normally, the byte and time limits are not hit
229 * in theses conditions. */
230 #define DEFAULT_MAX_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
231 #define DEFAULT_MAX_SIZE_BUFFERS 5
232 #define DEFAULT_MAX_SIZE_TIME 2 * GST_SECOND
234 /* second limits. When we hit one of the above limits we are probably dealing
235 * with a badly muxed file and we scale the limits to these emergency values.
236 * This is currently not yet implemented.
237 * Since we dynamically scale the queue buffer size up to the limits but avoid
238 * going above the max-size-buffers when we can, we don't really need this
239 * aditional extra size. */
240 #define DEFAULT_EXTRA_SIZE_BYTES 10 * 1024 * 1024 /* 10 MB */
241 #define DEFAULT_EXTRA_SIZE_BUFFERS 5
242 #define DEFAULT_EXTRA_SIZE_TIME 3 * GST_SECOND
244 #define DEFAULT_USE_BUFFERING FALSE
245 #define DEFAULT_LOW_PERCENT 10
246 #define DEFAULT_HIGH_PERCENT 99
247 #define DEFAULT_SYNC_BY_RUNNING_TIME FALSE
252 PROP_EXTRA_SIZE_BYTES,
253 PROP_EXTRA_SIZE_BUFFERS,
254 PROP_EXTRA_SIZE_TIME,
256 PROP_MAX_SIZE_BUFFERS,
261 PROP_SYNC_BY_RUNNING_TIME,
265 #define GST_MULTI_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
266 g_mutex_lock (&q->qlock); \
269 #define GST_MULTI_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \
270 g_mutex_unlock (&q->qlock); \
273 static void gst_multi_queue_finalize (GObject * object);
274 static void gst_multi_queue_set_property (GObject * object,
275 guint prop_id, const GValue * value, GParamSpec * pspec);
276 static void gst_multi_queue_get_property (GObject * object,
277 guint prop_id, GValue * value, GParamSpec * pspec);
279 static GstPad *gst_multi_queue_request_new_pad (GstElement * element,
280 GstPadTemplate * temp, const gchar * name, const GstCaps * caps);
281 static void gst_multi_queue_release_pad (GstElement * element, GstPad * pad);
282 static GstStateChangeReturn gst_multi_queue_change_state (GstElement *
283 element, GstStateChange transition);
285 static void gst_multi_queue_loop (GstPad * pad);
288 GST_DEBUG_CATEGORY_INIT (multi_queue_debug, "multiqueue", 0, "multiqueue element");
289 #define gst_multi_queue_parent_class parent_class
290 G_DEFINE_TYPE_WITH_CODE (GstMultiQueue, gst_multi_queue, GST_TYPE_ELEMENT,
293 static guint gst_multi_queue_signals[LAST_SIGNAL] = { 0 };
296 gst_multi_queue_class_init (GstMultiQueueClass * klass)
298 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
299 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
301 gobject_class->set_property = gst_multi_queue_set_property;
302 gobject_class->get_property = gst_multi_queue_get_property;
307 * GstMultiQueue::underrun:
308 * @multiqueue: the multiqueue instance
310 * This signal is emitted from the streaming thread when there is
311 * no data in any of the queues inside the multiqueue instance (underrun).
313 * This indicates either starvation or EOS from the upstream data sources.
315 gst_multi_queue_signals[SIGNAL_UNDERRUN] =
316 g_signal_new ("underrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
317 G_STRUCT_OFFSET (GstMultiQueueClass, underrun), NULL, NULL,
318 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
321 * GstMultiQueue::overrun:
322 * @multiqueue: the multiqueue instance
324 * Reports that one of the queues in the multiqueue is full (overrun).
325 * A queue is full if the total amount of data inside it (num-buffers, time,
326 * size) is higher than the boundary values which can be set through the
327 * GObject properties.
329 * This can be used as an indicator of pre-roll.
331 gst_multi_queue_signals[SIGNAL_OVERRUN] =
332 g_signal_new ("overrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
333 G_STRUCT_OFFSET (GstMultiQueueClass, overrun), NULL, NULL,
334 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
338 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES,
339 g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
340 "Max. amount of data in the queue (bytes, 0=disable)",
341 0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
342 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
343 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BUFFERS,
344 g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
345 "Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
346 DEFAULT_MAX_SIZE_BUFFERS,
347 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
348 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
349 g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
350 "Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
351 DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
353 g_object_class_install_property (gobject_class, PROP_EXTRA_SIZE_BYTES,
354 g_param_spec_uint ("extra-size-bytes", "Extra Size (kB)",
355 "Amount of data the queues can grow if one of them is empty (bytes, 0=disable)"
356 " (NOT IMPLEMENTED)",
357 0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BYTES,
358 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
359 g_object_class_install_property (gobject_class, PROP_EXTRA_SIZE_BUFFERS,
360 g_param_spec_uint ("extra-size-buffers", "Extra Size (buffers)",
361 "Amount of buffers the queues can grow if one of them is empty (0=disable)"
362 " (NOT IMPLEMENTED)",
363 0, G_MAXUINT, DEFAULT_EXTRA_SIZE_BUFFERS,
364 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
365 g_object_class_install_property (gobject_class, PROP_EXTRA_SIZE_TIME,
366 g_param_spec_uint64 ("extra-size-time", "Extra Size (ns)",
367 "Amount of time the queues can grow if one of them is empty (in ns, 0=disable)"
368 " (NOT IMPLEMENTED)",
369 0, G_MAXUINT64, DEFAULT_EXTRA_SIZE_TIME,
370 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
373 * GstMultiQueue:use-buffering
375 * Enable the buffering option in multiqueue so that BUFFERING messages are
376 * emitted based on low-/high-percent thresholds.
378 g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
379 g_param_spec_boolean ("use-buffering", "Use buffering",
380 "Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
381 DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
383 * GstMultiQueue:low-percent
385 * Low threshold percent for buffering to start.
387 g_object_class_install_property (gobject_class, PROP_LOW_PERCENT,
388 g_param_spec_int ("low-percent", "Low percent",
389 "Low threshold for buffering to start", 0, 100,
390 DEFAULT_LOW_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
392 * GstMultiQueue:high-percent
394 * High threshold percent for buffering to finish.
396 g_object_class_install_property (gobject_class, PROP_HIGH_PERCENT,
397 g_param_spec_int ("high-percent", "High percent",
398 "High threshold for buffering to finish", 0, 100,
399 DEFAULT_HIGH_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
402 * GstMultiQueue:sync-by-running-time
404 * If enabled multiqueue will synchronize deactivated or not-linked streams
405 * to the activated and linked streams by taking the running time.
406 * Otherwise multiqueue will synchronize the deactivated or not-linked
407 * streams by keeping the order in which buffers and events arrived compared
408 * to active and linked streams.
410 g_object_class_install_property (gobject_class, PROP_SYNC_BY_RUNNING_TIME,
411 g_param_spec_boolean ("sync-by-running-time", "Sync By Running Time",
412 "Synchronize deactivated or not-linked streams by running time",
413 DEFAULT_SYNC_BY_RUNNING_TIME,
414 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
416 gobject_class->finalize = gst_multi_queue_finalize;
418 gst_element_class_set_static_metadata (gstelement_class,
420 "Generic", "Multiple data queue", "Edward Hervey <edward@fluendo.com>");
421 gst_element_class_add_pad_template (gstelement_class,
422 gst_static_pad_template_get (&sinktemplate));
423 gst_element_class_add_pad_template (gstelement_class,
424 gst_static_pad_template_get (&srctemplate));
426 gstelement_class->request_new_pad =
427 GST_DEBUG_FUNCPTR (gst_multi_queue_request_new_pad);
428 gstelement_class->release_pad =
429 GST_DEBUG_FUNCPTR (gst_multi_queue_release_pad);
430 gstelement_class->change_state =
431 GST_DEBUG_FUNCPTR (gst_multi_queue_change_state);
435 gst_multi_queue_init (GstMultiQueue * mqueue)
437 mqueue->nbqueues = 0;
438 mqueue->queues = NULL;
440 mqueue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES;
441 mqueue->max_size.visible = DEFAULT_MAX_SIZE_BUFFERS;
442 mqueue->max_size.time = DEFAULT_MAX_SIZE_TIME;
444 mqueue->extra_size.bytes = DEFAULT_EXTRA_SIZE_BYTES;
445 mqueue->extra_size.visible = DEFAULT_EXTRA_SIZE_BUFFERS;
446 mqueue->extra_size.time = DEFAULT_EXTRA_SIZE_TIME;
448 mqueue->use_buffering = DEFAULT_USE_BUFFERING;
449 mqueue->low_percent = DEFAULT_LOW_PERCENT;
450 mqueue->high_percent = DEFAULT_HIGH_PERCENT;
452 mqueue->sync_by_running_time = DEFAULT_SYNC_BY_RUNNING_TIME;
456 mqueue->high_time = GST_CLOCK_TIME_NONE;
458 g_mutex_init (&mqueue->qlock);
462 gst_multi_queue_finalize (GObject * object)
464 GstMultiQueue *mqueue = GST_MULTI_QUEUE (object);
466 g_list_foreach (mqueue->queues, (GFunc) gst_single_queue_free, NULL);
467 g_list_free (mqueue->queues);
468 mqueue->queues = NULL;
469 mqueue->queues_cookie++;
471 /* free/unref instance data */
472 g_mutex_clear (&mqueue->qlock);
474 G_OBJECT_CLASS (parent_class)->finalize (object);
477 #define SET_CHILD_PROPERTY(mq,format) G_STMT_START { \
478 GList * tmp = mq->queues; \
480 GstSingleQueue *q = (GstSingleQueue*)tmp->data; \
481 q->max_size.format = mq->max_size.format; \
482 update_buffering (mq, q); \
483 gst_data_queue_limits_changed (q->queue); \
484 tmp = g_list_next(tmp); \
489 gst_multi_queue_set_property (GObject * object, guint prop_id,
490 const GValue * value, GParamSpec * pspec)
492 GstMultiQueue *mq = GST_MULTI_QUEUE (object);
495 case PROP_MAX_SIZE_BYTES:
496 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
497 mq->max_size.bytes = g_value_get_uint (value);
498 SET_CHILD_PROPERTY (mq, bytes);
499 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
501 case PROP_MAX_SIZE_BUFFERS:
504 gint new_size = g_value_get_uint (value);
506 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
508 mq->max_size.visible = new_size;
512 GstDataQueueSize size;
513 GstSingleQueue *q = (GstSingleQueue *) tmp->data;
514 gst_data_queue_get_level (q->queue, &size);
516 /* do not reduce max size below current level if the single queue has grown because of empty queue */
518 q->max_size.visible = new_size;
519 } else if (new_size > size.visible) {
520 q->max_size.visible = new_size;
522 update_buffering (mq, q);
523 gst_data_queue_limits_changed (q->queue);
524 tmp = g_list_next (tmp);
527 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
531 case PROP_MAX_SIZE_TIME:
532 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
533 mq->max_size.time = g_value_get_uint64 (value);
534 SET_CHILD_PROPERTY (mq, time);
535 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
537 case PROP_EXTRA_SIZE_BYTES:
538 mq->extra_size.bytes = g_value_get_uint (value);
540 case PROP_EXTRA_SIZE_BUFFERS:
541 mq->extra_size.visible = g_value_get_uint (value);
543 case PROP_EXTRA_SIZE_TIME:
544 mq->extra_size.time = g_value_get_uint64 (value);
546 case PROP_USE_BUFFERING:
547 mq->use_buffering = g_value_get_boolean (value);
548 if (!mq->use_buffering && mq->buffering) {
551 mq->buffering = FALSE;
552 GST_DEBUG_OBJECT (mq, "buffering 100 percent");
553 message = gst_message_new_buffering (GST_OBJECT_CAST (mq), 100);
555 gst_element_post_message (GST_ELEMENT_CAST (mq), message);
558 if (mq->use_buffering) {
561 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
563 mq->buffering = TRUE;
566 GstSingleQueue *q = (GstSingleQueue *) tmp->data;
567 update_buffering (mq, q);
568 gst_data_queue_limits_changed (q->queue);
569 tmp = g_list_next (tmp);
572 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
575 case PROP_LOW_PERCENT:
576 mq->low_percent = g_value_get_int (value);
578 case PROP_HIGH_PERCENT:
579 mq->high_percent = g_value_get_int (value);
581 case PROP_SYNC_BY_RUNNING_TIME:
582 mq->sync_by_running_time = g_value_get_boolean (value);
585 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
591 gst_multi_queue_get_property (GObject * object, guint prop_id,
592 GValue * value, GParamSpec * pspec)
594 GstMultiQueue *mq = GST_MULTI_QUEUE (object);
596 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
599 case PROP_EXTRA_SIZE_BYTES:
600 g_value_set_uint (value, mq->extra_size.bytes);
602 case PROP_EXTRA_SIZE_BUFFERS:
603 g_value_set_uint (value, mq->extra_size.visible);
605 case PROP_EXTRA_SIZE_TIME:
606 g_value_set_uint64 (value, mq->extra_size.time);
608 case PROP_MAX_SIZE_BYTES:
609 g_value_set_uint (value, mq->max_size.bytes);
611 case PROP_MAX_SIZE_BUFFERS:
612 g_value_set_uint (value, mq->max_size.visible);
614 case PROP_MAX_SIZE_TIME:
615 g_value_set_uint64 (value, mq->max_size.time);
617 case PROP_USE_BUFFERING:
618 g_value_set_boolean (value, mq->use_buffering);
620 case PROP_LOW_PERCENT:
621 g_value_set_int (value, mq->low_percent);
623 case PROP_HIGH_PERCENT:
624 g_value_set_int (value, mq->high_percent);
626 case PROP_SYNC_BY_RUNNING_TIME:
627 g_value_set_boolean (value, mq->sync_by_running_time);
630 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
634 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
638 gst_multi_queue_iterate_internal_links (GstPad * pad, GstObject * parent)
640 GstIterator *it = NULL;
642 GstSingleQueue *squeue;
643 GstMultiQueue *mq = GST_MULTI_QUEUE (parent);
646 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
647 squeue = gst_pad_get_element_private (pad);
651 if (squeue->sinkpad == pad)
652 opad = gst_object_ref (squeue->srcpad);
653 else if (squeue->srcpad == pad)
654 opad = gst_object_ref (squeue->sinkpad);
658 g_value_init (&val, GST_TYPE_PAD);
659 g_value_set_object (&val, opad);
660 it = gst_iterator_new_single (GST_TYPE_PAD, &val);
661 g_value_unset (&val);
663 gst_object_unref (opad);
666 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
677 gst_multi_queue_request_new_pad (GstElement * element, GstPadTemplate * temp,
678 const gchar * name, const GstCaps * caps)
680 GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
681 GstSingleQueue *squeue;
685 sscanf (name + 4, "_%u", &temp_id);
686 GST_LOG_OBJECT (element, "name : %s (id %d)", GST_STR_NULL (name), temp_id);
689 /* Create a new single queue, add the sink and source pad and return the sink pad */
690 squeue = gst_single_queue_new (mqueue, temp_id);
692 GST_DEBUG_OBJECT (mqueue, "Returning pad %s:%s",
693 GST_DEBUG_PAD_NAME (squeue->sinkpad));
695 return squeue ? squeue->sinkpad : NULL;
699 gst_multi_queue_release_pad (GstElement * element, GstPad * pad)
701 GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
702 GstSingleQueue *sq = NULL;
705 GST_LOG_OBJECT (element, "pad %s:%s", GST_DEBUG_PAD_NAME (pad));
707 GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
708 /* Find which single queue it belongs to, knowing that it should be a sinkpad */
709 for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
710 sq = (GstSingleQueue *) tmp->data;
712 if (sq->sinkpad == pad)
717 GST_WARNING_OBJECT (mqueue, "That pad doesn't belong to this element ???");
718 GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
722 /* FIXME: The removal of the singlequeue should probably not happen until it
723 * finishes draining */
725 /* remove it from the list */
726 mqueue->queues = g_list_delete_link (mqueue->queues, tmp);
727 mqueue->queues_cookie++;
729 /* FIXME : recompute next-non-linked */
730 GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
732 /* delete SingleQueue */
733 gst_data_queue_set_flushing (sq->queue, TRUE);
735 gst_pad_set_active (sq->srcpad, FALSE);
736 gst_pad_set_active (sq->sinkpad, FALSE);
737 gst_pad_set_element_private (sq->srcpad, NULL);
738 gst_pad_set_element_private (sq->sinkpad, NULL);
739 gst_element_remove_pad (element, sq->srcpad);
740 gst_element_remove_pad (element, sq->sinkpad);
741 gst_single_queue_free (sq);
744 static GstStateChangeReturn
745 gst_multi_queue_change_state (GstElement * element, GstStateChange transition)
747 GstMultiQueue *mqueue = GST_MULTI_QUEUE (element);
748 GstSingleQueue *sq = NULL;
749 GstStateChangeReturn result;
751 switch (transition) {
752 case GST_STATE_CHANGE_READY_TO_PAUSED:{
755 /* Set all pads to non-flushing */
756 GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
757 for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
758 sq = (GstSingleQueue *) tmp->data;
759 sq->flushing = FALSE;
762 /* the visible limit might not have been set on single queues that have grown because of other queueus were empty */
763 SET_CHILD_PROPERTY (mqueue, visible);
765 GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
769 case GST_STATE_CHANGE_PAUSED_TO_READY:{
772 /* Un-wait all waiting pads */
773 GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
774 for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
775 sq = (GstSingleQueue *) tmp->data;
777 g_cond_signal (&sq->turn);
779 sq->last_query = FALSE;
780 g_cond_signal (&sq->query_handled);
782 GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
789 result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
791 switch (transition) {
800 gst_single_queue_flush (GstMultiQueue * mq, GstSingleQueue * sq, gboolean flush,
805 GST_DEBUG_OBJECT (mq, "flush %s queue %d", (flush ? "start" : "stop"),
809 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
810 sq->srcresult = GST_FLOW_FLUSHING;
811 gst_data_queue_set_flushing (sq->queue, TRUE);
815 /* wake up non-linked task */
816 GST_LOG_OBJECT (mq, "SingleQueue %d : waking up eventually waiting task",
818 g_cond_signal (&sq->turn);
819 sq->last_query = FALSE;
820 g_cond_signal (&sq->query_handled);
821 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
823 GST_LOG_OBJECT (mq, "SingleQueue %d : pausing task", sq->id);
824 result = gst_pad_pause_task (sq->srcpad);
825 sq->sink_tainted = sq->src_tainted = TRUE;
827 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
828 gst_single_queue_flush_queue (sq, full);
829 gst_segment_init (&sq->sink_segment, GST_FORMAT_TIME);
830 gst_segment_init (&sq->src_segment, GST_FORMAT_TIME);
831 /* All pads start off not-linked for a smooth kick-off */
832 sq->srcresult = GST_FLOW_OK;
835 sq->max_size.visible = mq->max_size.visible;
839 sq->last_oldid = G_MAXUINT32;
840 sq->next_time = GST_CLOCK_TIME_NONE;
841 sq->last_time = GST_CLOCK_TIME_NONE;
842 gst_data_queue_set_flushing (sq->queue, FALSE);
844 /* Reset high time to be recomputed next */
845 mq->high_time = GST_CLOCK_TIME_NONE;
847 sq->flushing = FALSE;
848 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
850 GST_LOG_OBJECT (mq, "SingleQueue %d : starting task", sq->id);
852 gst_pad_start_task (sq->srcpad, (GstTaskFunction) gst_multi_queue_loop,
859 update_buffering (GstMultiQueue * mq, GstSingleQueue * sq)
861 GstDataQueueSize size;
863 gboolean post = FALSE;
865 /* nothing to dowhen we are not in buffering mode */
866 if (!mq->use_buffering)
869 gst_data_queue_get_level (sq->queue, &size);
871 GST_DEBUG_OBJECT (mq,
872 "queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
873 G_GUINT64_FORMAT, sq->id, size.visible, sq->max_size.visible,
874 size.bytes, sq->max_size.bytes, sq->cur_time, sq->max_size.time);
876 /* get bytes and time percentages and take the max */
877 if (sq->is_eos || sq->srcresult == GST_FLOW_NOT_LINKED) {
881 if (sq->max_size.time > 0) {
882 tmp = (sq->cur_time * 100) / sq->max_size.time;
883 percent = MAX (percent, tmp);
885 if (sq->max_size.bytes > 0) {
886 tmp = (size.bytes * 100) / sq->max_size.bytes;
887 percent = MAX (percent, tmp);
893 if (percent >= mq->high_percent) {
894 mq->buffering = FALSE;
896 /* make sure it increases */
897 percent = MAX (mq->percent, percent);
899 if (percent == mq->percent)
900 /* don't post if nothing changed */
903 /* else keep last value we posted */
904 mq->percent = percent;
906 if (percent < mq->low_percent) {
907 mq->buffering = TRUE;
908 mq->percent = percent;
915 /* scale to high percent so that it becomes the 100% mark */
916 percent = percent * 100 / mq->high_percent;
921 GST_DEBUG_OBJECT (mq, "buffering %d percent", percent);
922 message = gst_message_new_buffering (GST_OBJECT_CAST (mq), percent);
924 gst_element_post_message (GST_ELEMENT_CAST (mq), message);
926 GST_DEBUG_OBJECT (mq, "filled %d percent", percent);
930 /* calculate the diff between running time on the sink and src of the queue.
931 * This is the total amount of time in the queue.
934 update_time_level (GstMultiQueue * mq, GstSingleQueue * sq)
936 gint64 sink_time, src_time;
938 if (sq->sink_tainted) {
939 sink_time = sq->sinktime =
940 gst_segment_to_running_time (&sq->sink_segment, GST_FORMAT_TIME,
941 sq->sink_segment.position);
943 if (G_UNLIKELY (sink_time != GST_CLOCK_TIME_NONE))
944 /* if we have a time, we become untainted and use the time */
945 sq->sink_tainted = FALSE;
947 sink_time = sq->sinktime;
949 if (sq->src_tainted) {
950 src_time = sq->srctime =
951 gst_segment_to_running_time (&sq->src_segment, GST_FORMAT_TIME,
952 sq->src_segment.position);
953 /* if we have a time, we become untainted and use the time */
954 if (G_UNLIKELY (src_time != GST_CLOCK_TIME_NONE))
955 sq->src_tainted = FALSE;
957 src_time = sq->srctime;
959 GST_DEBUG_OBJECT (mq,
960 "queue %d, sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT, sq->id,
961 GST_TIME_ARGS (sink_time), GST_TIME_ARGS (src_time));
963 /* This allows for streams with out of order timestamping - sometimes the
964 * emerging timestamp is later than the arriving one(s) */
965 if (G_LIKELY (sink_time != -1 && src_time != -1 && sink_time > src_time))
966 sq->cur_time = sink_time - src_time;
970 /* updating the time level can change the buffering state */
971 update_buffering (mq, sq);
976 /* take a SEGMENT event and apply the values to segment, updating the time
979 apply_segment (GstMultiQueue * mq, GstSingleQueue * sq, GstEvent * event,
980 GstSegment * segment)
982 gst_event_copy_segment (event, segment);
984 /* now configure the values, we use these to track timestamps on the
986 if (segment->format != GST_FORMAT_TIME) {
987 /* non-time format, pretent the current time segment is closed with a
988 * 0 start and unknown stop time. */
989 segment->format = GST_FORMAT_TIME;
994 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
996 if (segment == &sq->sink_segment)
997 sq->sink_tainted = TRUE;
999 sq->src_tainted = TRUE;
1001 GST_DEBUG_OBJECT (mq,
1002 "queue %d, configured SEGMENT %" GST_SEGMENT_FORMAT, sq->id, segment);
1004 /* segment can update the time level of the queue */
1005 update_time_level (mq, sq);
1007 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1010 /* take a buffer and update segment, updating the time level of the queue. */
1012 apply_buffer (GstMultiQueue * mq, GstSingleQueue * sq, GstClockTime timestamp,
1013 GstClockTime duration, GstSegment * segment)
1015 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1017 /* if no timestamp is set, assume it's continuous with the previous
1019 if (timestamp == GST_CLOCK_TIME_NONE)
1020 timestamp = segment->position;
1023 if (duration != GST_CLOCK_TIME_NONE)
1024 timestamp += duration;
1026 GST_DEBUG_OBJECT (mq, "queue %d, position updated to %" GST_TIME_FORMAT,
1027 sq->id, GST_TIME_ARGS (timestamp));
1029 segment->position = timestamp;
1031 if (segment == &sq->sink_segment)
1032 sq->sink_tainted = TRUE;
1034 sq->src_tainted = TRUE;
1036 /* calc diff with other end */
1037 update_time_level (mq, sq);
1038 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1042 get_running_time (GstSegment * segment, GstMiniObject * object, gboolean end)
1044 GstClockTime time = GST_CLOCK_TIME_NONE;
1046 if (GST_IS_BUFFER (object)) {
1047 GstBuffer *buf = GST_BUFFER_CAST (object);
1049 if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
1050 time = GST_BUFFER_TIMESTAMP (buf);
1051 if (end && GST_BUFFER_DURATION_IS_VALID (buf))
1052 time += GST_BUFFER_DURATION (buf);
1053 if (time > segment->stop)
1054 time = segment->stop;
1055 time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, time);
1057 } else if (GST_IS_BUFFER_LIST (object)) {
1058 GstBufferList *list = GST_BUFFER_LIST_CAST (object);
1062 n = gst_buffer_list_length (list);
1063 for (i = 0; i < n; i++) {
1064 buf = gst_buffer_list_get (list, i);
1065 if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
1066 time = GST_BUFFER_TIMESTAMP (buf);
1067 if (end && GST_BUFFER_DURATION_IS_VALID (buf))
1068 time += GST_BUFFER_DURATION (buf);
1069 if (time > segment->stop)
1070 time = segment->stop;
1071 time = gst_segment_to_running_time (segment, GST_FORMAT_TIME, time);
1078 } else if (GST_IS_EVENT (object)) {
1079 GstEvent *event = GST_EVENT_CAST (object);
1081 /* For newsegment events return the running time of the start position */
1082 if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
1083 const GstSegment *new_segment;
1085 gst_event_parse_segment (event, &new_segment);
1086 if (new_segment->format == GST_FORMAT_TIME) {
1088 gst_segment_to_running_time (new_segment, GST_FORMAT_TIME,
1089 new_segment->start);
1098 static GstFlowReturn
1099 gst_single_queue_push_one (GstMultiQueue * mq, GstSingleQueue * sq,
1100 GstMiniObject * object)
1102 GstFlowReturn result = sq->srcresult;
1104 if (GST_IS_BUFFER (object)) {
1106 GstClockTime timestamp, duration;
1108 buffer = GST_BUFFER_CAST (object);
1109 timestamp = GST_BUFFER_TIMESTAMP (buffer);
1110 duration = GST_BUFFER_DURATION (buffer);
1112 apply_buffer (mq, sq, timestamp, duration, &sq->src_segment);
1114 /* Applying the buffer may have made the queue non-full again, unblock it if needed */
1115 gst_data_queue_limits_changed (sq->queue);
1117 GST_DEBUG_OBJECT (mq,
1118 "SingleQueue %d : Pushing buffer %p with ts %" GST_TIME_FORMAT,
1119 sq->id, buffer, GST_TIME_ARGS (timestamp));
1121 result = gst_pad_push (sq->srcpad, buffer);
1122 } else if (GST_IS_EVENT (object)) {
1125 event = GST_EVENT_CAST (object);
1127 switch (GST_EVENT_TYPE (event)) {
1129 result = GST_FLOW_EOS;
1131 case GST_EVENT_SEGMENT:
1132 apply_segment (mq, sq, event, &sq->src_segment);
1133 /* Applying the segment may have made the queue non-full again, unblock it if needed */
1134 gst_data_queue_limits_changed (sq->queue);
1140 GST_DEBUG_OBJECT (mq,
1141 "SingleQueue %d : Pushing event %p of type %s",
1142 sq->id, event, GST_EVENT_TYPE_NAME (event));
1144 gst_pad_push_event (sq->srcpad, event);
1145 } else if (GST_IS_QUERY (object)) {
1149 query = GST_QUERY_CAST (object);
1151 res = gst_pad_peer_query (sq->srcpad, query);
1153 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1154 sq->last_query = res;
1155 g_cond_signal (&sq->query_handled);
1156 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1158 g_warning ("Unexpected object in singlequeue %u (refcounting problem?)",
1166 static GstMiniObject *
1167 gst_multi_queue_item_steal_object (GstMultiQueueItem * item)
1172 item->object = NULL;
1178 gst_multi_queue_item_destroy (GstMultiQueueItem * item)
1180 if (!item->is_query && item->object)
1181 gst_mini_object_unref (item->object);
1182 g_slice_free (GstMultiQueueItem, item);
1185 /* takes ownership of passed mini object! */
1186 static GstMultiQueueItem *
1187 gst_multi_queue_buffer_item_new (GstMiniObject * object, guint32 curid)
1189 GstMultiQueueItem *item;
1191 item = g_slice_new (GstMultiQueueItem);
1192 item->object = object;
1193 item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
1194 item->posid = curid;
1195 item->is_query = GST_IS_QUERY (object);
1197 item->size = gst_buffer_get_size (GST_BUFFER_CAST (object));
1198 item->duration = GST_BUFFER_DURATION (object);
1199 if (item->duration == GST_CLOCK_TIME_NONE)
1201 item->visible = TRUE;
1205 static GstMultiQueueItem *
1206 gst_multi_queue_mo_item_new (GstMiniObject * object, guint32 curid)
1208 GstMultiQueueItem *item;
1210 item = g_slice_new (GstMultiQueueItem);
1211 item->object = object;
1212 item->destroy = (GDestroyNotify) gst_multi_queue_item_destroy;
1213 item->posid = curid;
1214 item->is_query = GST_IS_QUERY (object);
1218 item->visible = FALSE;
1222 /* Each main loop attempts to push buffers until the return value
1223 * is not-linked. not-linked pads are not allowed to push data beyond
1224 * any linked pads, so they don't 'rush ahead of the pack'.
1227 gst_multi_queue_loop (GstPad * pad)
1230 GstMultiQueueItem *item;
1231 GstDataQueueItem *sitem;
1233 GstMiniObject *object = NULL;
1235 GstFlowReturn result;
1236 GstClockTime next_time;
1238 gboolean do_update_buffering = FALSE;
1240 sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
1243 GST_DEBUG_OBJECT (mq, "SingleQueue %d : trying to pop an object", sq->id);
1248 /* Get something from the queue, blocking until that happens, or we get
1250 if (!(gst_data_queue_pop (sq->queue, &sitem)))
1253 item = (GstMultiQueueItem *) sitem;
1254 newid = item->posid;
1256 /* steal the object and destroy the item */
1257 object = gst_multi_queue_item_steal_object (item);
1258 gst_multi_queue_item_destroy (item);
1260 is_buffer = GST_IS_BUFFER (object);
1262 /* Get running time of the item. Events will have GST_CLOCK_TIME_NONE */
1263 next_time = get_running_time (&sq->src_segment, object, TRUE);
1265 GST_LOG_OBJECT (mq, "SingleQueue %d : newid:%d , oldid:%d",
1266 sq->id, newid, sq->last_oldid);
1268 /* If we're not-linked, we do some extra work because we might need to
1269 * wait before pushing. If we're linked but there's a gap in the IDs,
1270 * or it's the first loop, or we just passed the previous highid,
1271 * we might need to wake some sleeping pad up, so there's extra work
1273 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1274 if (sq->srcresult == GST_FLOW_NOT_LINKED
1275 || (sq->last_oldid == G_MAXUINT32) || (newid != (sq->last_oldid + 1))
1276 || sq->last_oldid > mq->highid) {
1277 GST_LOG_OBJECT (mq, "CHECKING sq->srcresult: %s",
1278 gst_flow_get_name (sq->srcresult));
1280 /* Check again if we're flushing after the lock is taken,
1281 * the flush flag might have been changed in the meantime */
1283 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1287 /* Update the nextid so other threads know when to wake us up */
1289 sq->next_time = next_time;
1291 /* Update the oldid (the last ID we output) for highid tracking */
1292 if (sq->last_oldid != G_MAXUINT32)
1293 sq->oldid = sq->last_oldid;
1295 if (sq->srcresult == GST_FLOW_NOT_LINKED) {
1296 /* Go to sleep until it's time to push this buffer */
1298 /* Recompute the highid */
1299 compute_high_id (mq);
1300 /* Recompute the high time */
1301 compute_high_time (mq);
1303 while (((mq->sync_by_running_time && next_time != GST_CLOCK_TIME_NONE &&
1304 (mq->high_time == GST_CLOCK_TIME_NONE
1305 || next_time >= mq->high_time))
1306 || (!mq->sync_by_running_time && newid > mq->highid))
1307 && sq->srcresult == GST_FLOW_NOT_LINKED) {
1309 GST_DEBUG_OBJECT (mq,
1310 "queue %d sleeping for not-linked wakeup with "
1311 "newid %u, highid %u, next_time %" GST_TIME_FORMAT
1312 ", high_time %" GST_TIME_FORMAT, sq->id, newid, mq->highid,
1313 GST_TIME_ARGS (next_time), GST_TIME_ARGS (mq->high_time));
1315 /* Wake up all non-linked pads before we sleep */
1316 wake_up_next_non_linked (mq);
1319 g_cond_wait (&sq->turn, &mq->qlock);
1323 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1327 /* Recompute the high time */
1328 compute_high_time (mq);
1330 GST_DEBUG_OBJECT (mq, "queue %d woken from sleeping for not-linked "
1331 "wakeup with newid %u, highid %u, next_time %" GST_TIME_FORMAT
1332 ", high_time %" GST_TIME_FORMAT, sq->id, newid, mq->highid,
1333 GST_TIME_ARGS (next_time), GST_TIME_ARGS (mq->high_time));
1336 /* Re-compute the high_id in case someone else pushed */
1337 compute_high_id (mq);
1339 compute_high_id (mq);
1340 /* Wake up all non-linked pads */
1341 wake_up_next_non_linked (mq);
1343 /* We're done waiting, we can clear the nextid and nexttime */
1345 sq->next_time = GST_CLOCK_TIME_NONE;
1347 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1352 GST_LOG_OBJECT (mq, "BEFORE PUSHING sq->srcresult: %s",
1353 gst_flow_get_name (sq->srcresult));
1355 /* Update time stats */
1356 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1357 next_time = get_running_time (&sq->src_segment, object, FALSE);
1358 if (next_time != GST_CLOCK_TIME_NONE) {
1359 if (sq->last_time == GST_CLOCK_TIME_NONE || sq->last_time < next_time)
1360 sq->last_time = next_time;
1361 if (mq->high_time == GST_CLOCK_TIME_NONE || mq->high_time <= next_time) {
1362 /* Wake up all non-linked pads now that we advanced the high time */
1363 mq->high_time = next_time;
1364 wake_up_next_non_linked (mq);
1367 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1369 /* Try to push out the new object */
1370 result = gst_single_queue_push_one (mq, sq, object);
1373 /* Check if we pushed something already and if this is
1374 * now a switch from an active to a non-active stream.
1376 * If it is, we reset all the waiting streams, let them
1377 * push another buffer to see if they're now active again.
1378 * This allows faster switching between streams and prevents
1379 * deadlocks if downstream does any waiting too.
1381 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1382 if (sq->pushed && sq->srcresult == GST_FLOW_OK
1383 && result == GST_FLOW_NOT_LINKED) {
1386 GST_LOG_OBJECT (mq, "SingleQueue %d : Changed from active to non-active",
1389 compute_high_id (mq);
1390 do_update_buffering = TRUE;
1392 /* maybe no-one is waiting */
1393 if (mq->numwaiting > 0) {
1394 /* Else figure out which singlequeue(s) need waking up */
1395 for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
1396 GstSingleQueue *sq2 = (GstSingleQueue *) tmp->data;
1398 if (sq2->srcresult == GST_FLOW_NOT_LINKED) {
1399 GST_LOG_OBJECT (mq, "Waking up singlequeue %d", sq2->id);
1400 sq2->pushed = FALSE;
1401 sq2->srcresult = GST_FLOW_OK;
1402 g_cond_signal (&sq2->turn);
1410 sq->srcresult = result;
1411 sq->last_oldid = newid;
1413 if (do_update_buffering)
1414 update_buffering (mq, sq);
1416 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1418 if (result != GST_FLOW_OK && result != GST_FLOW_NOT_LINKED
1419 && result != GST_FLOW_EOS)
1422 GST_LOG_OBJECT (mq, "AFTER PUSHING sq->srcresult: %s",
1423 gst_flow_get_name (sq->srcresult));
1430 gst_mini_object_unref (object);
1432 /* Need to make sure wake up any sleeping pads when we exit */
1433 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1434 compute_high_time (mq);
1435 compute_high_id (mq);
1436 wake_up_next_non_linked (mq);
1437 sq->last_query = FALSE;
1438 g_cond_signal (&sq->query_handled);
1439 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1441 /* upstream needs to see fatal result ASAP to shut things down,
1442 * but might be stuck in one of our other full queues;
1443 * so empty this one and trigger dynamic queue growth. At
1444 * this point the srcresult is not OK, NOT_LINKED
1445 * or EOS, i.e. a real failure */
1446 gst_single_queue_flush_queue (sq, FALSE);
1447 single_queue_underrun_cb (sq->queue, sq);
1448 gst_data_queue_set_flushing (sq->queue, TRUE);
1449 gst_pad_pause_task (sq->srcpad);
1450 GST_CAT_LOG_OBJECT (multi_queue_debug, mq,
1451 "SingleQueue[%d] task paused, reason:%s",
1452 sq->id, gst_flow_get_name (sq->srcresult));
1458 * gst_multi_queue_chain:
1460 * This is similar to GstQueue's chain function, except:
1461 * _ we don't have leak behaviours,
1462 * _ we push with a unique id (curid)
1464 static GstFlowReturn
1465 gst_multi_queue_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
1469 GstMultiQueueItem *item;
1471 GstClockTime timestamp, duration;
1473 sq = gst_pad_get_element_private (pad);
1476 /* if eos, we are always full, so avoid hanging incoming indefinitely */
1480 /* Get a unique incrementing id */
1481 curid = g_atomic_int_add ((gint *) & mq->counter, 1);
1483 GST_LOG_OBJECT (mq, "SingleQueue %d : about to enqueue buffer %p with id %d",
1484 sq->id, buffer, curid);
1486 item = gst_multi_queue_buffer_item_new (GST_MINI_OBJECT_CAST (buffer), curid);
1488 timestamp = GST_BUFFER_TIMESTAMP (buffer);
1489 duration = GST_BUFFER_DURATION (buffer);
1491 if (!(gst_data_queue_push (sq->queue, (GstDataQueueItem *) item)))
1494 /* update time level, we must do this after pushing the data in the queue so
1495 * that we never end up filling the queue first. */
1496 apply_buffer (mq, sq, timestamp, duration, &sq->sink_segment);
1499 return sq->srcresult;
1504 GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
1505 sq->id, gst_flow_get_name (sq->srcresult));
1506 gst_multi_queue_item_destroy (item);
1511 GST_DEBUG_OBJECT (mq, "we are EOS, dropping buffer, return EOS");
1512 gst_buffer_unref (buffer);
1513 return GST_FLOW_EOS;
1518 gst_multi_queue_sink_activate_mode (GstPad * pad, GstObject * parent,
1519 GstPadMode mode, gboolean active)
1525 sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
1526 mq = (GstMultiQueue *) gst_pad_get_parent (pad);
1528 /* mq is NULL if the pad is activated/deactivated before being
1529 * added to the multiqueue */
1531 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1534 case GST_PAD_MODE_PUSH:
1536 /* All pads start off linked until they push one buffer */
1537 sq->srcresult = GST_FLOW_OK;
1539 gst_data_queue_set_flushing (sq->queue, FALSE);
1541 sq->srcresult = GST_FLOW_FLUSHING;
1542 sq->last_query = FALSE;
1543 g_cond_signal (&sq->query_handled);
1544 gst_data_queue_set_flushing (sq->queue, TRUE);
1546 /* Wait until streaming thread has finished */
1548 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1549 GST_PAD_STREAM_LOCK (pad);
1551 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1552 gst_data_queue_flush (sq->queue);
1554 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1555 GST_PAD_STREAM_UNLOCK (pad);
1557 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1567 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1568 gst_object_unref (mq);
1575 gst_multi_queue_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
1580 GstMultiQueueItem *item;
1583 GstEvent *sref = NULL;
1585 sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
1586 mq = (GstMultiQueue *) parent;
1588 type = GST_EVENT_TYPE (event);
1591 case GST_EVENT_FLUSH_START:
1592 GST_DEBUG_OBJECT (mq, "SingleQueue %d : received flush start event",
1595 res = gst_pad_push_event (sq->srcpad, event);
1597 gst_single_queue_flush (mq, sq, TRUE, FALSE);
1600 case GST_EVENT_FLUSH_STOP:
1601 GST_DEBUG_OBJECT (mq, "SingleQueue %d : received flush stop event",
1604 res = gst_pad_push_event (sq->srcpad, event);
1606 gst_single_queue_flush (mq, sq, FALSE, FALSE);
1608 case GST_EVENT_SEGMENT:
1609 /* take ref because the queue will take ownership and we need the event
1610 * afterwards to update the segment */
1611 sref = gst_event_ref (event);
1615 if (!(GST_EVENT_IS_SERIALIZED (event))) {
1616 res = gst_pad_push_event (sq->srcpad, event);
1622 /* if eos, we are always full, so avoid hanging incoming indefinitely */
1626 /* Get an unique incrementing id. */
1627 curid = g_atomic_int_add ((gint *) & mq->counter, 1);
1629 item = gst_multi_queue_mo_item_new ((GstMiniObject *) event, curid);
1631 GST_DEBUG_OBJECT (mq,
1632 "SingleQueue %d : Enqueuing event %p of type %s with id %d",
1633 sq->id, event, GST_EVENT_TYPE_NAME (event), curid);
1635 if (!(res = gst_data_queue_push (sq->queue, (GstDataQueueItem *) item)))
1638 /* mark EOS when we received one, we must do that after putting the
1639 * buffer in the queue because EOS marks the buffer as filled. No need to take
1640 * a lock, the _check_full happens from this thread only, right before pushing
1641 * into dataqueue. */
1645 /* EOS affects the buffering state */
1646 update_buffering (mq, sq);
1647 single_queue_overrun_cb (sq->queue, sq);
1649 case GST_EVENT_SEGMENT:
1650 apply_segment (mq, sq, sref, &sq->sink_segment);
1651 gst_event_unref (sref);
1661 GST_LOG_OBJECT (mq, "SingleQueue %d : exit because task paused, reason: %s",
1662 sq->id, gst_flow_get_name (sq->srcresult));
1664 gst_event_unref (sref);
1665 gst_multi_queue_item_destroy (item);
1670 GST_DEBUG_OBJECT (mq, "we are EOS, dropping event, return FALSE");
1671 gst_event_unref (event);
1678 gst_multi_queue_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
1684 sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
1685 mq = (GstMultiQueue *) parent;
1687 switch (GST_QUERY_TYPE (query)) {
1689 if (GST_QUERY_IS_SERIALIZED (query)) {
1691 GstMultiQueueItem *item;
1693 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1694 if (sq->srcresult != GST_FLOW_OK)
1697 /* serialized events go in the queue. We need to be certain that we
1698 * don't cause deadlocks waiting for the query return value. We check if
1699 * the queue is empty (nothing is blocking downstream and the query can
1700 * be pushed for sure) or we are not buffering. If we are buffering,
1701 * the pipeline waits to unblock downstream until our queue fills up
1702 * completely, which can not happen if we block on the query..
1703 * Therefore we only potentially block when we are not buffering. */
1704 if (!mq->use_buffering || gst_data_queue_is_empty (sq->queue)) {
1705 /* Get an unique incrementing id. */
1706 curid = g_atomic_int_add ((gint *) & mq->counter, 1);
1708 item = gst_multi_queue_mo_item_new ((GstMiniObject *) query, curid);
1710 GST_DEBUG_OBJECT (mq,
1711 "SingleQueue %d : Enqueuing query %p of type %s with id %d",
1712 sq->id, query, GST_QUERY_TYPE_NAME (query), curid);
1713 res = gst_data_queue_push (sq->queue, (GstDataQueueItem *) item);
1714 g_cond_wait (&sq->query_handled, &mq->qlock);
1715 res = sq->last_query;
1717 GST_DEBUG_OBJECT (mq, "refusing query, we are buffering and the "
1718 "queue is not empty");
1721 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1723 /* default handling */
1724 res = gst_pad_query_default (pad, parent, query);
1732 GST_DEBUG_OBJECT (mq, "Flushing");
1733 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1739 gst_multi_queue_src_activate_mode (GstPad * pad, GstObject * parent,
1740 GstPadMode mode, gboolean active)
1746 sq = (GstSingleQueue *) gst_pad_get_element_private (pad);
1749 GST_DEBUG_OBJECT (mq, "SingleQueue %d", sq->id);
1752 case GST_PAD_MODE_PUSH:
1754 result = gst_single_queue_flush (mq, sq, FALSE, TRUE);
1756 result = gst_single_queue_flush (mq, sq, TRUE, TRUE);
1757 /* make sure streaming finishes */
1758 result |= gst_pad_stop_task (pad);
1769 gst_multi_queue_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
1771 GstSingleQueue *sq = gst_pad_get_element_private (pad);
1772 GstMultiQueue *mq = sq->mqueue;
1775 switch (GST_EVENT_TYPE (event)) {
1776 case GST_EVENT_RECONFIGURE:
1777 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1778 if (sq->srcresult == GST_FLOW_NOT_LINKED) {
1779 sq->srcresult = GST_FLOW_OK;
1780 g_cond_signal (&sq->turn);
1782 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
1784 ret = gst_pad_push_event (sq->sinkpad, event);
1787 ret = gst_pad_push_event (sq->sinkpad, event);
1795 gst_multi_queue_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
1799 /* FIXME, Handle position offset depending on queue size */
1800 switch (GST_QUERY_TYPE (query)) {
1802 /* default handling */
1803 res = gst_pad_query_default (pad, parent, query);
1810 * Next-non-linked functions
1813 /* WITH LOCK TAKEN */
1815 wake_up_next_non_linked (GstMultiQueue * mq)
1819 /* maybe no-one is waiting */
1820 if (mq->numwaiting < 1)
1823 /* Else figure out which singlequeue(s) need waking up */
1824 for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
1825 GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
1827 if (sq->srcresult == GST_FLOW_NOT_LINKED) {
1828 if ((mq->sync_by_running_time && mq->high_time != GST_CLOCK_TIME_NONE
1829 && sq->next_time != GST_CLOCK_TIME_NONE
1830 && sq->next_time >= mq->high_time)
1831 || (sq->nextid != 0 && sq->nextid <= mq->highid)) {
1832 GST_LOG_OBJECT (mq, "Waking up singlequeue %d", sq->id);
1833 g_cond_signal (&sq->turn);
1839 /* WITH LOCK TAKEN */
1841 compute_high_id (GstMultiQueue * mq)
1843 /* The high-id is either the highest id among the linked pads, or if all
1844 * pads are not-linked, it's the lowest not-linked pad */
1846 guint32 lowest = G_MAXUINT32;
1847 guint32 highid = G_MAXUINT32;
1849 for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
1850 GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
1852 GST_LOG_OBJECT (mq, "inspecting sq:%d , nextid:%d, oldid:%d, srcresult:%s",
1853 sq->id, sq->nextid, sq->oldid, gst_flow_get_name (sq->srcresult));
1855 if (sq->srcresult == GST_FLOW_NOT_LINKED) {
1856 /* No need to consider queues which are not waiting */
1857 if (sq->nextid == 0) {
1858 GST_LOG_OBJECT (mq, "sq:%d is not waiting - ignoring", sq->id);
1862 if (sq->nextid < lowest)
1863 lowest = sq->nextid;
1864 } else if (sq->srcresult != GST_FLOW_EOS) {
1865 /* If we don't have a global highid, or the global highid is lower than
1866 * this single queue's last outputted id, store the queue's one,
1867 * unless the singlequeue is at EOS (srcresult = EOS) */
1868 if ((highid == G_MAXUINT32) || (sq->oldid > highid))
1873 if (highid == G_MAXUINT32 || lowest < highid)
1874 mq->highid = lowest;
1876 mq->highid = highid;
1878 GST_LOG_OBJECT (mq, "Highid is now : %u, lowest non-linked %u", mq->highid,
1882 /* WITH LOCK TAKEN */
1884 compute_high_time (GstMultiQueue * mq)
1886 /* The high-id is either the highest id among the linked pads, or if all
1887 * pads are not-linked, it's the lowest not-linked pad */
1889 GstClockTime highest = GST_CLOCK_TIME_NONE;
1890 GstClockTime lowest = GST_CLOCK_TIME_NONE;
1892 for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
1893 GstSingleQueue *sq = (GstSingleQueue *) tmp->data;
1896 "inspecting sq:%d , next_time:%" GST_TIME_FORMAT ", last_time:%"
1897 GST_TIME_FORMAT ", srcresult:%s", sq->id, GST_TIME_ARGS (sq->next_time),
1898 GST_TIME_ARGS (sq->last_time), gst_flow_get_name (sq->srcresult));
1900 if (sq->srcresult == GST_FLOW_NOT_LINKED) {
1901 /* No need to consider queues which are not waiting */
1902 if (sq->next_time == GST_CLOCK_TIME_NONE) {
1903 GST_LOG_OBJECT (mq, "sq:%d is not waiting - ignoring", sq->id);
1907 if (lowest == GST_CLOCK_TIME_NONE || sq->next_time < lowest)
1908 lowest = sq->next_time;
1909 } else if (sq->srcresult != GST_FLOW_EOS) {
1910 /* If we don't have a global highid, or the global highid is lower than
1911 * this single queue's last outputted id, store the queue's one,
1912 * unless the singlequeue is at EOS (srcresult = EOS) */
1913 if (highest == GST_CLOCK_TIME_NONE || sq->last_time > highest)
1914 highest = sq->last_time;
1918 mq->high_time = highest;
1921 "High time is now : %" GST_TIME_FORMAT ", lowest non-linked %"
1922 GST_TIME_FORMAT, GST_TIME_ARGS (mq->high_time), GST_TIME_ARGS (lowest));
1925 #define IS_FILLED(q, format, value) (((q)->max_size.format) != 0 && \
1926 ((q)->max_size.format) <= (value))
1929 * GstSingleQueue functions
1932 single_queue_overrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
1934 GstMultiQueue *mq = sq->mqueue;
1936 GstDataQueueSize size;
1937 gboolean filled = TRUE;
1938 gboolean all_not_linked = TRUE;
1939 gboolean empty_found = FALSE;
1941 gst_data_queue_get_level (sq->queue, &size);
1944 "Single Queue %d: EOS %d, visible %u/%u, bytes %u/%u, time %"
1945 G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT, sq->id, sq->is_eos, size.visible,
1946 sq->max_size.visible, size.bytes, sq->max_size.bytes, sq->cur_time,
1949 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
1951 /* check if we reached the hard time/bytes limits */
1952 if (sq->is_eos || IS_FILLED (sq, bytes, size.bytes) ||
1953 IS_FILLED (sq, time, sq->cur_time)) {
1957 /* Search for empty or unlinked queues */
1958 for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
1959 GstSingleQueue *oq = (GstSingleQueue *) tmp->data;
1964 if (oq->srcresult == GST_FLOW_NOT_LINKED) {
1965 GST_LOG_OBJECT (mq, "Queue %d is not-linked", oq->id);
1969 all_not_linked = FALSE;
1970 GST_LOG_OBJECT (mq, "Checking Queue %d", oq->id);
1971 if (gst_data_queue_is_empty (oq->queue)) {
1972 GST_LOG_OBJECT (mq, "Queue %d is empty", oq->id);
1978 if (!mq->queues || !mq->queues->next)
1979 all_not_linked = FALSE;
1981 /* if hard limits are not reached then we allow one more buffer in the full
1982 * queue, but only if any of the other singelqueues are empty or all are
1984 if (all_not_linked || empty_found) {
1985 if (all_not_linked) {
1986 GST_LOG_OBJECT (mq, "All other queues are not linked");
1988 if (IS_FILLED (sq, visible, size.visible)) {
1989 sq->max_size.visible = size.visible + 1;
1990 GST_DEBUG_OBJECT (mq,
1991 "Bumping single queue %d max visible to %d",
1992 sq->id, sq->max_size.visible);
1998 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
2000 /* Overrun is always forwarded, since this is blocking the upstream element */
2002 GST_DEBUG_OBJECT (mq, "Queue %d is filled, signalling overrun", sq->id);
2003 g_signal_emit (mq, gst_multi_queue_signals[SIGNAL_OVERRUN], 0);
2008 single_queue_underrun_cb (GstDataQueue * dq, GstSingleQueue * sq)
2010 gboolean empty = TRUE;
2011 GstMultiQueue *mq = sq->mqueue;
2014 if (sq->srcresult == GST_FLOW_NOT_LINKED) {
2015 GST_LOG_OBJECT (mq, "Single Queue %d is empty but not-linked", sq->id);
2019 "Single Queue %d is empty, Checking other single queues", sq->id);
2022 GST_MULTI_QUEUE_MUTEX_LOCK (mq);
2023 for (tmp = mq->queues; tmp; tmp = g_list_next (tmp)) {
2024 GstSingleQueue *oq = (GstSingleQueue *) tmp->data;
2026 if (gst_data_queue_is_full (oq->queue)) {
2027 GstDataQueueSize size;
2029 gst_data_queue_get_level (oq->queue, &size);
2030 if (IS_FILLED (oq, visible, size.visible)) {
2031 oq->max_size.visible = size.visible + 1;
2032 GST_DEBUG_OBJECT (mq,
2033 "queue %d is filled, bumping its max visible to %d", oq->id,
2034 oq->max_size.visible);
2035 gst_data_queue_limits_changed (oq->queue);
2038 if (!gst_data_queue_is_empty (oq->queue))
2041 GST_MULTI_QUEUE_MUTEX_UNLOCK (mq);
2044 GST_DEBUG_OBJECT (mq, "All queues are empty, signalling it");
2045 g_signal_emit (mq, gst_multi_queue_signals[SIGNAL_UNDERRUN], 0);
2050 single_queue_check_full (GstDataQueue * dataq, guint visible, guint bytes,
2051 guint64 time, GstSingleQueue * sq)
2054 GstMultiQueue *mq = sq->mqueue;
2056 GST_DEBUG_OBJECT (mq,
2057 "queue %d: visible %u/%u, bytes %u/%u, time %" G_GUINT64_FORMAT "/%"
2058 G_GUINT64_FORMAT, sq->id, visible, sq->max_size.visible, bytes,
2059 sq->max_size.bytes, sq->cur_time, sq->max_size.time);
2061 /* we are always filled on EOS */
2065 /* we never go past the max visible items unless we are in buffering mode */
2066 if (!mq->use_buffering && IS_FILLED (sq, visible, visible))
2069 /* check time or bytes */
2070 res = IS_FILLED (sq, time, sq->cur_time) || IS_FILLED (sq, bytes, bytes);
2076 gst_single_queue_flush_queue (GstSingleQueue * sq, gboolean full)
2078 GstDataQueueItem *sitem;
2079 GstMultiQueueItem *mitem;
2080 gboolean was_flushing = FALSE;
2082 while (!gst_data_queue_is_empty (sq->queue)) {
2083 GstMiniObject *data;
2085 /* FIXME: If this fails here although the queue is not empty,
2086 * we're flushing... but we want to rescue all sticky
2087 * events nonetheless.
2089 if (!gst_data_queue_pop (sq->queue, &sitem)) {
2090 was_flushing = TRUE;
2091 gst_data_queue_set_flushing (sq->queue, FALSE);
2095 mitem = (GstMultiQueueItem *) sitem;
2097 data = sitem->object;
2099 if (!full && !mitem->is_query && GST_IS_EVENT (data)
2100 && GST_EVENT_IS_STICKY (data)
2101 && GST_EVENT_TYPE (data) != GST_EVENT_SEGMENT
2102 && GST_EVENT_TYPE (data) != GST_EVENT_EOS) {
2103 gst_pad_store_sticky_event (sq->srcpad, GST_EVENT_CAST (data));
2106 sitem->destroy (sitem);
2109 gst_data_queue_flush (sq->queue);
2111 gst_data_queue_set_flushing (sq->queue, TRUE);
2115 gst_single_queue_free (GstSingleQueue * sq)
2118 gst_data_queue_flush (sq->queue);
2119 g_object_unref (sq->queue);
2120 g_cond_clear (&sq->turn);
2121 g_cond_clear (&sq->query_handled);
2125 static GstSingleQueue *
2126 gst_single_queue_new (GstMultiQueue * mqueue, guint id)
2131 guint temp_id = (id == -1) ? 0 : id;
2133 GST_MULTI_QUEUE_MUTEX_LOCK (mqueue);
2135 /* Find an unused queue ID, if possible the passed one */
2136 for (tmp = mqueue->queues; tmp; tmp = g_list_next (tmp)) {
2137 GstSingleQueue *sq2 = (GstSingleQueue *) tmp->data;
2138 /* This works because the IDs are sorted in ascending order */
2139 if (sq2->id == temp_id) {
2140 /* If this ID was requested by the caller return NULL,
2141 * otherwise just get us the next one */
2143 temp_id = sq2->id + 1;
2146 } else if (sq2->id > temp_id) {
2151 sq = g_new0 (GstSingleQueue, 1);
2155 mqueue->queues = g_list_insert_before (mqueue->queues, tmp, sq);
2156 mqueue->queues_cookie++;
2158 /* copy over max_size and extra_size so we don't need to take the lock
2159 * any longer when checking if the queue is full. */
2160 sq->max_size.visible = mqueue->max_size.visible;
2161 sq->max_size.bytes = mqueue->max_size.bytes;
2162 sq->max_size.time = mqueue->max_size.time;
2164 sq->extra_size.visible = mqueue->extra_size.visible;
2165 sq->extra_size.bytes = mqueue->extra_size.bytes;
2166 sq->extra_size.time = mqueue->extra_size.time;
2168 GST_DEBUG_OBJECT (mqueue, "Creating GstSingleQueue id:%d", sq->id);
2170 sq->mqueue = mqueue;
2171 sq->srcresult = GST_FLOW_FLUSHING;
2173 sq->queue = gst_data_queue_new ((GstDataQueueCheckFullFunction)
2174 single_queue_check_full,
2175 (GstDataQueueFullCallback) single_queue_overrun_cb,
2176 (GstDataQueueEmptyCallback) single_queue_underrun_cb, sq);
2178 sq->flushing = FALSE;
2179 gst_segment_init (&sq->sink_segment, GST_FORMAT_TIME);
2180 gst_segment_init (&sq->src_segment, GST_FORMAT_TIME);
2184 sq->next_time = GST_CLOCK_TIME_NONE;
2185 sq->last_time = GST_CLOCK_TIME_NONE;
2186 g_cond_init (&sq->turn);
2187 g_cond_init (&sq->query_handled);
2189 sq->sinktime = GST_CLOCK_TIME_NONE;
2190 sq->srctime = GST_CLOCK_TIME_NONE;
2191 sq->sink_tainted = TRUE;
2192 sq->src_tainted = TRUE;
2194 name = g_strdup_printf ("sink_%u", sq->id);
2195 sq->sinkpad = gst_pad_new_from_static_template (&sinktemplate, name);
2198 gst_pad_set_chain_function (sq->sinkpad,
2199 GST_DEBUG_FUNCPTR (gst_multi_queue_chain));
2200 gst_pad_set_activatemode_function (sq->sinkpad,
2201 GST_DEBUG_FUNCPTR (gst_multi_queue_sink_activate_mode));
2202 gst_pad_set_event_function (sq->sinkpad,
2203 GST_DEBUG_FUNCPTR (gst_multi_queue_sink_event));
2204 gst_pad_set_query_function (sq->sinkpad,
2205 GST_DEBUG_FUNCPTR (gst_multi_queue_sink_query));
2206 gst_pad_set_iterate_internal_links_function (sq->sinkpad,
2207 GST_DEBUG_FUNCPTR (gst_multi_queue_iterate_internal_links));
2208 GST_OBJECT_FLAG_SET (sq->sinkpad, GST_PAD_FLAG_PROXY_CAPS);
2210 name = g_strdup_printf ("src_%u", sq->id);
2211 sq->srcpad = gst_pad_new_from_static_template (&srctemplate, name);
2214 gst_pad_set_activatemode_function (sq->srcpad,
2215 GST_DEBUG_FUNCPTR (gst_multi_queue_src_activate_mode));
2216 gst_pad_set_event_function (sq->srcpad,
2217 GST_DEBUG_FUNCPTR (gst_multi_queue_src_event));
2218 gst_pad_set_query_function (sq->srcpad,
2219 GST_DEBUG_FUNCPTR (gst_multi_queue_src_query));
2220 gst_pad_set_iterate_internal_links_function (sq->srcpad,
2221 GST_DEBUG_FUNCPTR (gst_multi_queue_iterate_internal_links));
2222 GST_OBJECT_FLAG_SET (sq->srcpad, GST_PAD_FLAG_PROXY_CAPS);
2224 gst_pad_set_element_private (sq->sinkpad, (gpointer) sq);
2225 gst_pad_set_element_private (sq->srcpad, (gpointer) sq);
2227 GST_MULTI_QUEUE_MUTEX_UNLOCK (mqueue);
2229 /* only activate the pads when we are not in the NULL state
2230 * and add the pad under the state_lock to prevend state changes
2231 * between activating and adding */
2232 g_rec_mutex_lock (GST_STATE_GET_LOCK (mqueue));
2233 if (GST_STATE_TARGET (mqueue) != GST_STATE_NULL) {
2234 gst_pad_set_active (sq->srcpad, TRUE);
2235 gst_pad_set_active (sq->sinkpad, TRUE);
2237 gst_element_add_pad (GST_ELEMENT (mqueue), sq->srcpad);
2238 gst_element_add_pad (GST_ELEMENT (mqueue), sq->sinkpad);
2239 g_rec_mutex_unlock (GST_STATE_GET_LOCK (mqueue));
2241 GST_DEBUG_OBJECT (mqueue, "GstSingleQueue [%d] created and pads added",