2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
4 * 2003 Colin Walters <cwalters@gnome.org>
5 * 2005 Wim Taymans <wim@fluendo.com>
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., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
26 * SECTION:element-queue
28 * Data is queued until one of the limits specified by the
29 * #GstQueue:max-size-buffers, #GstQueue:max-size-bytes and/or
30 * #GstQueue:max-size-time properties has been reached. Any attempt to push
31 * more buffers into the queue will block the pushing thread until more space
34 * The queue will create a new thread on the source pad to decouple the
35 * processing on sink and source pad.
37 * You can query how many buffers are queued by reading the
38 * #GstQueue:current-level-buffers property. You can track changes
39 * by connecting to the notify::current-level-buffers signal (which
40 * like all signals will be emitted from the streaming thread). The same
41 * applies to the #GstQueue:current-level-time and
42 * #GstQueue:current-level-bytes properties.
44 * The default queue size limits are 200 buffers, 10MB of data, or
45 * one second worth of data, whichever is reached first.
47 * As said earlier, the queue blocks by default when one of the specified
48 * maximums (bytes, time, buffers) has been reached. You can set the
49 * #GstQueue:leaky property to specify that instead of blocking it should
50 * leak (drop) new or old buffers.
52 * The #GstQueue::underrun signal is emitted when the queue has less data than
53 * the specified minimum thresholds require (by default: when the queue is
54 * empty). The #GstQueue::overrun signal is emitted when the queue is filled
55 * up. Both signals are emitted from the context of the streaming thread.
58 #include "gst/gst_private.h"
63 #include "../../gst/gst-i18n-lib.h"
64 #include "../../gst/glib-compat-private.h"
66 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
71 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
76 GST_DEBUG_CATEGORY_STATIC (queue_debug);
77 #define GST_CAT_DEFAULT (queue_debug)
78 GST_DEBUG_CATEGORY_STATIC (queue_dataflow);
80 #define STATUS(queue, pad, msg) \
81 GST_CAT_LOG_OBJECT (queue_dataflow, queue, \
82 "(%s:%s) " msg ": %u of %u-%u buffers, %u of %u-%u " \
83 "bytes, %" G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT \
84 "-%" G_GUINT64_FORMAT " ns, %u items", \
85 GST_DEBUG_PAD_NAME (pad), \
86 queue->cur_level.buffers, \
87 queue->min_threshold.buffers, \
88 queue->max_size.buffers, \
89 queue->cur_level.bytes, \
90 queue->min_threshold.bytes, \
91 queue->max_size.bytes, \
92 queue->cur_level.time, \
93 queue->min_threshold.time, \
94 queue->max_size.time, \
97 /* Queue signals and args */
110 /* FIXME: don't we have another way of doing this
111 * "Gstreamer format" (frame/byte/time) queries? */
112 PROP_CUR_LEVEL_BUFFERS,
113 PROP_CUR_LEVEL_BYTES,
115 PROP_MAX_SIZE_BUFFERS,
118 PROP_MIN_THRESHOLD_BUFFERS,
119 PROP_MIN_THRESHOLD_BYTES,
120 PROP_MIN_THRESHOLD_TIME,
125 /* default property values */
126 #define DEFAULT_MAX_SIZE_BUFFERS 200 /* 200 buffers */
127 #define DEFAULT_MAX_SIZE_BYTES (10 * 1024 * 1024) /* 10 MB */
128 #define DEFAULT_MAX_SIZE_TIME GST_SECOND /* 1 second */
130 #define GST_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
131 g_mutex_lock (&q->qlock); \
134 #define GST_QUEUE_MUTEX_LOCK_CHECK(q,label) G_STMT_START { \
135 GST_QUEUE_MUTEX_LOCK (q); \
136 if (q->srcresult != GST_FLOW_OK) \
140 #define GST_QUEUE_MUTEX_UNLOCK(q) G_STMT_START { \
141 g_mutex_unlock (&q->qlock); \
144 #define GST_QUEUE_WAIT_DEL_CHECK(q, label) G_STMT_START { \
145 STATUS (q, q->sinkpad, "wait for DEL"); \
146 q->waiting_del = TRUE; \
147 g_cond_wait (&q->item_del, &q->qlock); \
148 q->waiting_del = FALSE; \
149 if (q->srcresult != GST_FLOW_OK) { \
150 STATUS (q, q->srcpad, "received DEL wakeup"); \
153 STATUS (q, q->sinkpad, "received DEL"); \
156 #define GST_QUEUE_WAIT_ADD_CHECK(q, label) G_STMT_START { \
157 STATUS (q, q->srcpad, "wait for ADD"); \
158 q->waiting_add = TRUE; \
159 g_cond_wait (&q->item_add, &q->qlock); \
160 q->waiting_add = FALSE; \
161 if (q->srcresult != GST_FLOW_OK) { \
162 STATUS (q, q->srcpad, "received ADD wakeup"); \
165 STATUS (q, q->srcpad, "received ADD"); \
168 #define GST_QUEUE_SIGNAL_DEL(q) G_STMT_START { \
169 if (q->waiting_del) { \
170 STATUS (q, q->srcpad, "signal DEL"); \
171 g_cond_signal (&q->item_del); \
175 #define GST_QUEUE_SIGNAL_ADD(q) G_STMT_START { \
176 if (q->waiting_add) { \
177 STATUS (q, q->sinkpad, "signal ADD"); \
178 g_cond_signal (&q->item_add); \
183 GST_DEBUG_CATEGORY_INIT (queue_debug, "queue", 0, "queue element"); \
184 GST_DEBUG_CATEGORY_INIT (queue_dataflow, "queue_dataflow", 0, \
185 "dataflow inside the queue element");
186 #define gst_queue_parent_class parent_class
187 G_DEFINE_TYPE_WITH_CODE (GstQueue, gst_queue, GST_TYPE_ELEMENT, _do_init);
189 static void gst_queue_finalize (GObject * object);
191 static void gst_queue_set_property (GObject * object,
192 guint prop_id, const GValue * value, GParamSpec * pspec);
193 static void gst_queue_get_property (GObject * object,
194 guint prop_id, GValue * value, GParamSpec * pspec);
196 static GstFlowReturn gst_queue_chain (GstPad * pad, GstObject * parent,
198 static GstFlowReturn gst_queue_push_one (GstQueue * queue);
199 static void gst_queue_loop (GstPad * pad);
201 static gboolean gst_queue_handle_sink_event (GstPad * pad, GstObject * parent,
203 static gboolean gst_queue_handle_sink_query (GstPad * pad, GstObject * parent,
206 static gboolean gst_queue_handle_src_event (GstPad * pad, GstObject * parent,
208 static gboolean gst_queue_handle_src_query (GstPad * pad, GstObject * parent,
211 static void gst_queue_locked_flush (GstQueue * queue);
213 static gboolean gst_queue_src_activate_mode (GstPad * pad, GstObject * parent,
214 GstPadMode mode, gboolean active);
215 static gboolean gst_queue_sink_activate_mode (GstPad * pad, GstObject * parent,
216 GstPadMode mode, gboolean active);
218 static gboolean gst_queue_is_empty (GstQueue * queue);
219 static gboolean gst_queue_is_filled (GstQueue * queue);
221 #define GST_TYPE_QUEUE_LEAKY (queue_leaky_get_type ())
224 queue_leaky_get_type (void)
226 static GType queue_leaky_type = 0;
227 static const GEnumValue queue_leaky[] = {
228 {GST_QUEUE_NO_LEAK, "Not Leaky", "no"},
229 {GST_QUEUE_LEAK_UPSTREAM, "Leaky on upstream (new buffers)", "upstream"},
230 {GST_QUEUE_LEAK_DOWNSTREAM, "Leaky on downstream (old buffers)",
235 if (!queue_leaky_type) {
236 queue_leaky_type = g_enum_register_static ("GstQueueLeaky", queue_leaky);
238 return queue_leaky_type;
241 static guint gst_queue_signals[LAST_SIGNAL] = { 0 };
244 gst_queue_class_init (GstQueueClass * klass)
246 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
247 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
249 gobject_class->set_property = gst_queue_set_property;
250 gobject_class->get_property = gst_queue_get_property;
254 * GstQueue::underrun:
255 * @queue: the queue instance
257 * Reports that the buffer became empty (underrun).
258 * A buffer is empty if the total amount of data inside it (num-buffers, time,
259 * size) is lower than the boundary values which can be set through the
260 * GObject properties.
262 gst_queue_signals[SIGNAL_UNDERRUN] =
263 g_signal_new ("underrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
264 G_STRUCT_OFFSET (GstQueueClass, underrun), NULL, NULL,
265 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
268 * @queue: the queue instance
270 * Reports that enough (min-threshold) data is in the queue. Use this signal
271 * together with the underrun signal to pause the pipeline on underrun and
272 * wait for the queue to fill-up before resume playback.
274 gst_queue_signals[SIGNAL_RUNNING] =
275 g_signal_new ("running", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
276 G_STRUCT_OFFSET (GstQueueClass, running), NULL, NULL,
277 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
280 * @queue: the queue instance
282 * Reports that the buffer became full (overrun).
283 * A buffer is full if the total amount of data inside it (num-buffers, time,
284 * size) is higher than the boundary values which can be set through the
285 * GObject properties.
287 gst_queue_signals[SIGNAL_OVERRUN] =
288 g_signal_new ("overrun", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
289 G_STRUCT_OFFSET (GstQueueClass, overrun), NULL, NULL,
290 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
293 * @queue: the queue instance
295 * Reports when the queue has enough data to start pushing data again on the
298 gst_queue_signals[SIGNAL_PUSHING] =
299 g_signal_new ("pushing", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_FIRST,
300 G_STRUCT_OFFSET (GstQueueClass, pushing), NULL, NULL,
301 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
304 g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BYTES,
305 g_param_spec_uint ("current-level-bytes", "Current level (kB)",
306 "Current amount of data in the queue (bytes)",
307 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
308 g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BUFFERS,
309 g_param_spec_uint ("current-level-buffers", "Current level (buffers)",
310 "Current number of buffers in the queue",
311 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
312 g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_TIME,
313 g_param_spec_uint64 ("current-level-time", "Current level (ns)",
314 "Current amount of data in the queue (in ns)",
315 0, G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
317 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES,
318 g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
319 "Max. amount of data in the queue (bytes, 0=disable)",
320 0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
321 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
322 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BUFFERS,
323 g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
324 "Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
325 DEFAULT_MAX_SIZE_BUFFERS,
326 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
327 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
328 g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
329 "Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
330 DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
332 g_object_class_install_property (gobject_class, PROP_MIN_THRESHOLD_BYTES,
333 g_param_spec_uint ("min-threshold-bytes", "Min. threshold (kB)",
334 "Min. amount of data in the queue to allow reading (bytes, 0=disable)",
335 0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
336 g_object_class_install_property (gobject_class, PROP_MIN_THRESHOLD_BUFFERS,
337 g_param_spec_uint ("min-threshold-buffers", "Min. threshold (buffers)",
338 "Min. number of buffers in the queue to allow reading (0=disable)",
339 0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
340 g_object_class_install_property (gobject_class, PROP_MIN_THRESHOLD_TIME,
341 g_param_spec_uint64 ("min-threshold-time", "Min. threshold (ns)",
342 "Min. amount of data in the queue to allow reading (in ns, 0=disable)",
343 0, G_MAXUINT64, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
345 g_object_class_install_property (gobject_class, PROP_LEAKY,
346 g_param_spec_enum ("leaky", "Leaky",
347 "Where the queue leaks, if at all",
348 GST_TYPE_QUEUE_LEAKY, GST_QUEUE_NO_LEAK,
349 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
354 * Don't emit queue signals. Makes queues more lightweight if no signals are
359 g_object_class_install_property (gobject_class, PROP_SILENT,
360 g_param_spec_boolean ("silent", "Silent",
361 "Don't emit queue signals", FALSE,
362 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
364 gobject_class->finalize = gst_queue_finalize;
366 gst_element_class_set_details_simple (gstelement_class,
368 "Generic", "Simple data queue", "Erik Walthinsen <omega@cse.ogi.edu>");
369 gst_element_class_add_pad_template (gstelement_class,
370 gst_static_pad_template_get (&srctemplate));
371 gst_element_class_add_pad_template (gstelement_class,
372 gst_static_pad_template_get (&sinktemplate));
374 /* Registering debug symbols for function pointers */
375 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_src_activate_mode);
376 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_sink_event);
377 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_sink_query);
378 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_src_event);
379 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_src_query);
380 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_chain);
384 gst_queue_init (GstQueue * queue)
386 queue->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
388 gst_pad_set_chain_function (queue->sinkpad, gst_queue_chain);
389 gst_pad_set_activatemode_function (queue->sinkpad,
390 gst_queue_sink_activate_mode);
391 gst_pad_set_event_function (queue->sinkpad, gst_queue_handle_sink_event);
392 gst_pad_set_query_function (queue->sinkpad, gst_queue_handle_sink_query);
393 GST_PAD_SET_PROXY_CAPS (queue->sinkpad);
394 GST_PAD_SET_PROXY_ALLOCATION (queue->sinkpad);
395 gst_element_add_pad (GST_ELEMENT (queue), queue->sinkpad);
397 queue->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
399 gst_pad_set_activatemode_function (queue->srcpad,
400 gst_queue_src_activate_mode);
401 gst_pad_set_event_function (queue->srcpad, gst_queue_handle_src_event);
402 gst_pad_set_query_function (queue->srcpad, gst_queue_handle_src_query);
403 GST_PAD_SET_PROXY_CAPS (queue->srcpad);
404 gst_element_add_pad (GST_ELEMENT (queue), queue->srcpad);
406 GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
407 queue->max_size.buffers = DEFAULT_MAX_SIZE_BUFFERS;
408 queue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES;
409 queue->max_size.time = DEFAULT_MAX_SIZE_TIME;
410 GST_QUEUE_CLEAR_LEVEL (queue->min_threshold);
411 GST_QUEUE_CLEAR_LEVEL (queue->orig_min_threshold);
412 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
413 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
414 queue->head_needs_discont = queue->tail_needs_discont = FALSE;
416 queue->leaky = GST_QUEUE_NO_LEAK;
417 queue->srcresult = GST_FLOW_FLUSHING;
419 g_mutex_init (&queue->qlock);
420 g_cond_init (&queue->item_add);
421 g_cond_init (&queue->item_del);
423 g_queue_init (&queue->queue);
425 queue->sinktime = GST_CLOCK_TIME_NONE;
426 queue->srctime = GST_CLOCK_TIME_NONE;
428 queue->sink_tainted = TRUE;
429 queue->src_tainted = TRUE;
431 queue->newseg_applied_to_src = FALSE;
433 GST_DEBUG_OBJECT (queue,
434 "initialized queue's not_empty & not_full conditions");
437 /* called only once, as opposed to dispose */
439 gst_queue_finalize (GObject * object)
442 GstQueue *queue = GST_QUEUE (object);
444 GST_DEBUG_OBJECT (queue, "finalizing queue");
446 while ((data = g_queue_pop_head (&queue->queue)))
447 gst_mini_object_unref (data);
449 g_queue_clear (&queue->queue);
450 g_mutex_clear (&queue->qlock);
451 g_cond_clear (&queue->item_add);
452 g_cond_clear (&queue->item_del);
454 G_OBJECT_CLASS (parent_class)->finalize (object);
457 /* calculate the diff between running time on the sink and src of the queue.
458 * This is the total amount of time in the queue. */
460 update_time_level (GstQueue * queue)
462 gint64 sink_time, src_time;
464 if (queue->sink_tainted) {
465 GST_LOG_OBJECT (queue, "update sink time");
467 gst_segment_to_running_time (&queue->sink_segment, GST_FORMAT_TIME,
468 queue->sink_segment.position);
469 queue->sink_tainted = FALSE;
471 sink_time = queue->sinktime;
473 if (queue->src_tainted) {
474 GST_LOG_OBJECT (queue, "update src time");
476 gst_segment_to_running_time (&queue->src_segment, GST_FORMAT_TIME,
477 queue->src_segment.position);
478 queue->src_tainted = FALSE;
480 src_time = queue->srctime;
482 GST_LOG_OBJECT (queue, "sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT,
483 GST_TIME_ARGS (sink_time), GST_TIME_ARGS (src_time));
485 if (sink_time >= src_time)
486 queue->cur_level.time = sink_time - src_time;
488 queue->cur_level.time = 0;
491 /* take a SEGMENT event and apply the values to segment, updating the time
494 apply_segment (GstQueue * queue, GstEvent * event, GstSegment * segment,
497 gst_event_copy_segment (event, segment);
499 /* now configure the values, we use these to track timestamps on the
501 if (segment->format != GST_FORMAT_TIME) {
502 /* non-time format, pretent the current time segment is closed with a
503 * 0 start and unknown stop time. */
504 segment->format = GST_FORMAT_TIME;
510 queue->sink_tainted = TRUE;
512 queue->src_tainted = TRUE;
514 GST_DEBUG_OBJECT (queue, "configured SEGMENT %" GST_SEGMENT_FORMAT, segment);
516 /* segment can update the time level of the queue */
517 update_time_level (queue);
520 /* take a buffer and update segment, updating the time level of the queue. */
522 apply_buffer (GstQueue * queue, GstBuffer * buffer, GstSegment * segment,
523 gboolean with_duration, gboolean sink)
525 GstClockTime duration, timestamp;
527 timestamp = GST_BUFFER_TIMESTAMP (buffer);
528 duration = GST_BUFFER_DURATION (buffer);
530 /* if no timestamp is set, assume it's continuous with the previous
532 if (timestamp == GST_CLOCK_TIME_NONE)
533 timestamp = segment->position;
536 if (with_duration && duration != GST_CLOCK_TIME_NONE)
537 timestamp += duration;
539 GST_LOG_OBJECT (queue, "position updated to %" GST_TIME_FORMAT,
540 GST_TIME_ARGS (timestamp));
542 segment->position = timestamp;
544 queue->sink_tainted = TRUE;
546 queue->src_tainted = TRUE;
549 /* calc diff with other end */
550 update_time_level (queue);
554 gst_queue_locked_flush (GstQueue * queue)
558 while ((data = g_queue_pop_head (&queue->queue))) {
559 /* Then lose another reference because we are supposed to destroy that
560 data when flushing */
561 gst_mini_object_unref (data);
563 GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
564 queue->min_threshold.buffers = queue->orig_min_threshold.buffers;
565 queue->min_threshold.bytes = queue->orig_min_threshold.bytes;
566 queue->min_threshold.time = queue->orig_min_threshold.time;
567 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
568 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
569 queue->head_needs_discont = queue->tail_needs_discont = FALSE;
571 queue->sinktime = queue->srctime = GST_CLOCK_TIME_NONE;
572 queue->sink_tainted = queue->src_tainted = TRUE;
574 /* we deleted a lot of something */
575 GST_QUEUE_SIGNAL_DEL (queue);
578 /* enqueue an item an update the level stats, with QUEUE_LOCK */
580 gst_queue_locked_enqueue_buffer (GstQueue * queue, gpointer item)
582 GstBuffer *buffer = GST_BUFFER_CAST (item);
584 /* add buffer to the statistics */
585 queue->cur_level.buffers++;
586 queue->cur_level.bytes += gst_buffer_get_size (buffer);
587 apply_buffer (queue, buffer, &queue->sink_segment, TRUE, TRUE);
589 g_queue_push_tail (&queue->queue, item);
590 GST_QUEUE_SIGNAL_ADD (queue);
594 gst_queue_locked_enqueue_event (GstQueue * queue, gpointer item)
596 GstEvent *event = GST_EVENT_CAST (item);
598 switch (GST_EVENT_TYPE (event)) {
600 /* Zero the thresholds, this makes sure the queue is completely
601 * filled and we can read all data from the queue. */
602 GST_QUEUE_CLEAR_LEVEL (queue->min_threshold);
603 /* mark the queue as EOS. This prevents us from accepting more data. */
604 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from upstream");
607 case GST_EVENT_SEGMENT:
608 apply_segment (queue, event, &queue->sink_segment, TRUE);
609 /* if the queue is empty, apply sink segment on the source */
610 if (queue->queue.length == 0) {
611 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "Apply segment on srcpad");
612 apply_segment (queue, event, &queue->src_segment, FALSE);
613 queue->newseg_applied_to_src = TRUE;
615 /* a new segment allows us to accept more buffers if we got EOS
617 queue->unexpected = FALSE;
623 g_queue_push_tail (&queue->queue, item);
624 GST_QUEUE_SIGNAL_ADD (queue);
627 /* dequeue an item from the queue and update level stats, with QUEUE_LOCK */
628 static GstMiniObject *
629 gst_queue_locked_dequeue (GstQueue * queue)
633 item = g_queue_pop_head (&queue->queue);
637 if (GST_IS_BUFFER (item)) {
638 GstBuffer *buffer = GST_BUFFER_CAST (item);
640 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
641 "retrieved buffer %p from queue", buffer);
643 queue->cur_level.buffers--;
644 queue->cur_level.bytes -= gst_buffer_get_size (buffer);
645 apply_buffer (queue, buffer, &queue->src_segment, TRUE, FALSE);
647 /* if the queue is empty now, update the other side */
648 if (queue->cur_level.buffers == 0)
649 queue->cur_level.time = 0;
651 } else if (GST_IS_EVENT (item)) {
652 GstEvent *event = GST_EVENT_CAST (item);
654 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
655 "retrieved event %p from queue", event);
657 switch (GST_EVENT_TYPE (event)) {
659 /* queue is empty now that we dequeued the EOS */
660 GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
662 case GST_EVENT_SEGMENT:
663 /* apply newsegment if it has not already been applied */
664 if (G_LIKELY (!queue->newseg_applied_to_src)) {
665 apply_segment (queue, event, &queue->src_segment, FALSE);
667 queue->newseg_applied_to_src = FALSE;
673 } else if (GST_IS_QUERY (item)) {
674 GstQuery *query = GST_QUERY_CAST (item);
676 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
677 "retrieved query %p from queue", query);
680 ("Unexpected item %p dequeued from queue %s (refcounting problem?)",
681 item, GST_OBJECT_NAME (queue));
684 GST_QUEUE_SIGNAL_DEL (queue);
691 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "the queue is empty");
697 gst_queue_handle_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
701 queue = GST_QUEUE (parent);
703 switch (GST_EVENT_TYPE (event)) {
704 case GST_EVENT_FLUSH_START:
706 STATUS (queue, pad, "received flush start event");
708 gst_pad_push_event (queue->srcpad, event);
710 /* now unblock the chain function */
711 GST_QUEUE_MUTEX_LOCK (queue);
712 queue->srcresult = GST_FLOW_FLUSHING;
713 /* unblock the loop and chain functions */
714 GST_QUEUE_SIGNAL_ADD (queue);
715 GST_QUEUE_SIGNAL_DEL (queue);
716 GST_QUEUE_MUTEX_UNLOCK (queue);
718 /* make sure it pauses, this should happen since we sent
719 * flush_start downstream. */
720 gst_pad_pause_task (queue->srcpad);
721 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "loop stopped");
724 case GST_EVENT_FLUSH_STOP:
726 STATUS (queue, pad, "received flush stop event");
728 gst_pad_push_event (queue->srcpad, event);
730 GST_QUEUE_MUTEX_LOCK (queue);
731 gst_queue_locked_flush (queue);
732 queue->srcresult = GST_FLOW_OK;
734 queue->unexpected = FALSE;
735 gst_pad_start_task (queue->srcpad, (GstTaskFunction) gst_queue_loop,
737 GST_QUEUE_MUTEX_UNLOCK (queue);
739 STATUS (queue, pad, "after flush");
743 if (GST_EVENT_IS_SERIALIZED (event)) {
744 /* serialized events go in the queue */
745 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
746 /* refuse more events on EOS */
749 gst_queue_locked_enqueue_event (queue, event);
750 GST_QUEUE_MUTEX_UNLOCK (queue);
752 /* non-serialized events are passed upstream. */
753 gst_pad_push_event (queue->srcpad, event);
763 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
764 "refusing event, we are flushing");
765 GST_QUEUE_MUTEX_UNLOCK (queue);
766 gst_event_unref (event);
771 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "refusing event, we are EOS");
772 GST_QUEUE_MUTEX_UNLOCK (queue);
773 gst_event_unref (event);
779 gst_queue_handle_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
781 GstQueue *queue = GST_QUEUE_CAST (parent);
784 switch (GST_QUERY_TYPE (query)) {
786 if (G_UNLIKELY (GST_QUERY_IS_SERIALIZED (query))) {
787 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
788 GST_LOG_OBJECT (queue, "queuing query %p (%s)", query,
789 GST_QUERY_TYPE_NAME (query));
790 g_queue_push_tail (&queue->queue, query);
791 GST_QUEUE_SIGNAL_ADD (queue);
792 while (queue->queue.length != 0) {
793 /* for as long as the queue has items, we know the query is
795 GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing);
797 res = queue->last_query;
798 GST_QUEUE_MUTEX_UNLOCK (queue);
800 res = gst_pad_query_default (pad, parent, query);
809 GST_DEBUG_OBJECT (queue, "we are flushing");
810 GST_QUEUE_MUTEX_UNLOCK (queue);
816 gst_queue_is_empty (GstQueue * queue)
818 if (queue->queue.length == 0)
821 /* It is possible that a max size is reached before all min thresholds are.
822 * Therefore, only consider it empty if it is not filled. */
823 return ((queue->min_threshold.buffers > 0 &&
824 queue->cur_level.buffers < queue->min_threshold.buffers) ||
825 (queue->min_threshold.bytes > 0 &&
826 queue->cur_level.bytes < queue->min_threshold.bytes) ||
827 (queue->min_threshold.time > 0 &&
828 queue->cur_level.time < queue->min_threshold.time)) &&
829 !gst_queue_is_filled (queue);
833 gst_queue_is_filled (GstQueue * queue)
835 return (((queue->max_size.buffers > 0 &&
836 queue->cur_level.buffers >= queue->max_size.buffers) ||
837 (queue->max_size.bytes > 0 &&
838 queue->cur_level.bytes >= queue->max_size.bytes) ||
839 (queue->max_size.time > 0 &&
840 queue->cur_level.time >= queue->max_size.time)));
844 gst_queue_leak_downstream (GstQueue * queue)
846 /* for as long as the queue is filled, dequeue an item and discard it */
847 while (gst_queue_is_filled (queue)) {
850 leak = gst_queue_locked_dequeue (queue);
851 /* there is nothing to dequeue and the queue is still filled.. This should
853 g_assert (leak != NULL);
855 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
856 "queue is full, leaking item %p on downstream end", leak);
857 gst_mini_object_unref (leak);
859 /* last buffer needs to get a DISCONT flag */
860 queue->head_needs_discont = TRUE;
865 gst_queue_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
868 GstClockTime duration, timestamp;
870 queue = GST_QUEUE_CAST (parent);
872 /* we have to lock the queue since we span threads */
873 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
874 /* when we received EOS, we refuse any more data */
877 if (queue->unexpected)
880 timestamp = GST_BUFFER_TIMESTAMP (buffer);
881 duration = GST_BUFFER_DURATION (buffer);
883 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received buffer %p of size %"
884 G_GSIZE_FORMAT ", time %" GST_TIME_FORMAT ", duration %"
885 GST_TIME_FORMAT, buffer, gst_buffer_get_size (buffer),
886 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
888 /* We make space available if we're "full" according to whatever
889 * the user defined as "full". Note that this only applies to buffers.
890 * We always handle events and they don't count in our statistics. */
891 while (gst_queue_is_filled (queue)) {
892 if (!queue->silent) {
893 GST_QUEUE_MUTEX_UNLOCK (queue);
894 g_signal_emit (queue, gst_queue_signals[SIGNAL_OVERRUN], 0);
895 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
896 /* we recheck, the signal could have changed the thresholds */
897 if (!gst_queue_is_filled (queue))
901 /* how are we going to make space for this buffer? */
902 switch (queue->leaky) {
903 case GST_QUEUE_LEAK_UPSTREAM:
904 /* next buffer needs to get a DISCONT flag */
905 queue->tail_needs_discont = TRUE;
906 /* leak current buffer */
907 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
908 "queue is full, leaking buffer on upstream end");
909 /* now we can clean up and exit right away */
911 case GST_QUEUE_LEAK_DOWNSTREAM:
912 gst_queue_leak_downstream (queue);
915 g_warning ("Unknown leaky type, using default");
917 case GST_QUEUE_NO_LEAK:
919 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
920 "queue is full, waiting for free space");
922 /* don't leak. Instead, wait for space to be available */
924 /* for as long as the queue is filled, wait till an item was deleted. */
925 GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing);
926 } while (gst_queue_is_filled (queue));
928 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not full");
930 if (!queue->silent) {
931 GST_QUEUE_MUTEX_UNLOCK (queue);
932 g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0);
933 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
940 if (queue->tail_needs_discont) {
941 GstBuffer *subbuffer = gst_buffer_make_writable (buffer);
945 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
947 GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT");
949 queue->tail_needs_discont = FALSE;
952 /* put buffer in queue now */
953 gst_queue_locked_enqueue_buffer (queue, buffer);
954 GST_QUEUE_MUTEX_UNLOCK (queue);
958 /* special conditions */
961 GST_QUEUE_MUTEX_UNLOCK (queue);
963 gst_buffer_unref (buffer);
969 GstFlowReturn ret = queue->srcresult;
971 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
972 "exit because task paused, reason: %s", gst_flow_get_name (ret));
973 GST_QUEUE_MUTEX_UNLOCK (queue);
974 gst_buffer_unref (buffer);
980 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
981 GST_QUEUE_MUTEX_UNLOCK (queue);
983 gst_buffer_unref (buffer);
989 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
990 GST_QUEUE_MUTEX_UNLOCK (queue);
992 gst_buffer_unref (buffer);
998 /* dequeue an item from the queue an push it downstream. This functions returns
999 * the result of the push. */
1000 static GstFlowReturn
1001 gst_queue_push_one (GstQueue * queue)
1003 GstFlowReturn result = GST_FLOW_OK;
1004 GstMiniObject *data;
1006 data = gst_queue_locked_dequeue (queue);
1011 if (GST_IS_BUFFER (data)) {
1014 buffer = GST_BUFFER_CAST (data);
1016 if (queue->head_needs_discont) {
1017 GstBuffer *subbuffer = gst_buffer_make_writable (buffer);
1021 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
1023 GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT");
1025 queue->head_needs_discont = FALSE;
1028 GST_QUEUE_MUTEX_UNLOCK (queue);
1029 result = gst_pad_push (queue->srcpad, buffer);
1031 /* need to check for srcresult here as well */
1032 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1034 if (result == GST_FLOW_EOS) {
1035 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from downstream");
1036 /* stop pushing buffers, we dequeue all items until we see an item that we
1037 * can push again, which is EOS or SEGMENT. If there is nothing in the
1038 * queue we can push, we set a flag to make the sinkpad refuse more
1039 * buffers with an EOS return value. */
1040 while ((data = gst_queue_locked_dequeue (queue))) {
1041 if (GST_IS_BUFFER (data)) {
1042 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1043 "dropping EOS buffer %p", data);
1044 gst_buffer_unref (GST_BUFFER_CAST (data));
1045 } else if (GST_IS_EVENT (data)) {
1046 GstEvent *event = GST_EVENT_CAST (data);
1047 GstEventType type = GST_EVENT_TYPE (event);
1049 if (type == GST_EVENT_EOS || type == GST_EVENT_SEGMENT) {
1050 /* we found a pushable item in the queue, push it out */
1051 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1052 "pushing pushable event %s after EOS",
1053 GST_EVENT_TYPE_NAME (event));
1056 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1057 "dropping EOS event %p", event);
1058 gst_event_unref (event);
1059 } else if (GST_IS_QUERY (data)) {
1060 GstQuery *query = GST_QUERY_CAST (data);
1062 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1063 "dropping query %p because of EOS", query);
1064 queue->last_query = FALSE;
1067 /* no more items in the queue. Set the unexpected flag so that upstream
1068 * make us refuse any more buffers on the sinkpad. Since we will still
1069 * accept EOS and SEGMENT we return _FLOW_OK to the caller so that the
1070 * task function does not shut down. */
1071 queue->unexpected = TRUE;
1072 result = GST_FLOW_OK;
1074 } else if (GST_IS_EVENT (data)) {
1075 GstEvent *event = GST_EVENT_CAST (data);
1076 GstEventType type = GST_EVENT_TYPE (event);
1078 GST_QUEUE_MUTEX_UNLOCK (queue);
1080 gst_pad_push_event (queue->srcpad, event);
1082 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1083 /* if we're EOS, return EOS so that the task pauses. */
1084 if (type == GST_EVENT_EOS) {
1085 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1086 "pushed EOS event %p, return EOS", event);
1087 result = GST_FLOW_EOS;
1089 } else if (GST_IS_QUERY (data)) {
1090 GstQuery *query = GST_QUERY_CAST (data);
1092 queue->last_query = gst_pad_peer_query (queue->srcpad, query);
1093 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1094 "did query %p, return %d", query, queue->last_query);
1101 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1102 "exit because we have no item in the queue");
1103 return GST_FLOW_ERROR;
1107 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are flushing");
1108 return GST_FLOW_FLUSHING;
1113 gst_queue_loop (GstPad * pad)
1118 queue = (GstQueue *) GST_PAD_PARENT (pad);
1120 /* have to lock for thread-safety */
1121 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1123 while (gst_queue_is_empty (queue)) {
1124 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is empty");
1125 if (!queue->silent) {
1126 GST_QUEUE_MUTEX_UNLOCK (queue);
1127 g_signal_emit (queue, gst_queue_signals[SIGNAL_UNDERRUN], 0);
1128 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1131 /* we recheck, the signal could have changed the thresholds */
1132 while (gst_queue_is_empty (queue)) {
1133 GST_QUEUE_WAIT_ADD_CHECK (queue, out_flushing);
1136 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not empty");
1137 if (!queue->silent) {
1138 GST_QUEUE_MUTEX_UNLOCK (queue);
1139 g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0);
1140 g_signal_emit (queue, gst_queue_signals[SIGNAL_PUSHING], 0);
1141 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1145 ret = gst_queue_push_one (queue);
1146 queue->srcresult = ret;
1147 if (ret != GST_FLOW_OK)
1150 GST_QUEUE_MUTEX_UNLOCK (queue);
1157 gboolean eos = queue->eos;
1158 GstFlowReturn ret = queue->srcresult;
1160 gst_pad_pause_task (queue->srcpad);
1161 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1162 "pause task, reason: %s", gst_flow_get_name (ret));
1163 GST_QUEUE_SIGNAL_DEL (queue);
1164 GST_QUEUE_MUTEX_UNLOCK (queue);
1165 /* let app know about us giving up if upstream is not expected to do so */
1166 /* EOS is already taken care of elsewhere */
1167 if (eos && (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS)) {
1168 GST_ELEMENT_ERROR (queue, STREAM, FAILED,
1169 (_("Internal data flow error.")),
1170 ("streaming task paused, reason %s (%d)",
1171 gst_flow_get_name (ret), ret));
1172 gst_pad_push_event (queue->srcpad, gst_event_new_eos ());
1179 gst_queue_handle_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
1181 gboolean res = TRUE;
1182 GstQueue *queue = GST_QUEUE (parent);
1184 #ifndef GST_DISABLE_GST_DEBUG
1185 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%d)",
1186 event, GST_EVENT_TYPE (event));
1189 res = gst_pad_push_event (queue->sinkpad, event);
1195 gst_queue_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
1197 GstQueue *queue = GST_QUEUE (parent);
1200 res = gst_pad_query_default (pad, parent, query);
1204 switch (GST_QUERY_TYPE (query)) {
1205 case GST_QUERY_POSITION:
1210 /* get peer position */
1211 gst_query_parse_position (query, &format, &peer_pos);
1213 /* FIXME: this code assumes that there's no discont in the queue */
1215 case GST_FORMAT_BYTES:
1216 peer_pos -= queue->cur_level.bytes;
1218 case GST_FORMAT_TIME:
1219 peer_pos -= queue->cur_level.time;
1222 GST_DEBUG_OBJECT (queue, "Can't adjust query in %s format, don't "
1223 "know how to adjust value", gst_format_get_name (format));
1226 /* set updated position */
1227 gst_query_set_position (query, format, peer_pos);
1230 case GST_QUERY_LATENCY:
1233 GstClockTime min, max;
1235 gst_query_parse_latency (query, &live, &min, &max);
1237 /* we can delay up to the limit of the queue in time. If we have no time
1238 * limit, the best thing we can do is to return an infinite delay. In
1239 * reality a better estimate would be the byte/buffer rate but that is not
1240 * possible right now. */
1241 if (queue->max_size.time > 0 && max != -1)
1242 max += queue->max_size.time;
1246 /* adjust for min-threshold */
1247 if (queue->min_threshold.time > 0 && min != -1)
1248 min += queue->min_threshold.time;
1250 gst_query_set_latency (query, live, min, max);
1254 /* peer handled other queries */
1262 gst_queue_sink_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
1268 queue = GST_QUEUE (parent);
1271 case GST_PAD_MODE_PUSH:
1273 GST_QUEUE_MUTEX_LOCK (queue);
1274 queue->srcresult = GST_FLOW_OK;
1276 queue->unexpected = FALSE;
1277 GST_QUEUE_MUTEX_UNLOCK (queue);
1279 /* step 1, unblock chain function */
1280 GST_QUEUE_MUTEX_LOCK (queue);
1281 queue->srcresult = GST_FLOW_FLUSHING;
1282 gst_queue_locked_flush (queue);
1283 GST_QUEUE_MUTEX_UNLOCK (queue);
1295 gst_queue_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
1301 queue = GST_QUEUE (parent);
1304 case GST_PAD_MODE_PUSH:
1306 GST_QUEUE_MUTEX_LOCK (queue);
1307 queue->srcresult = GST_FLOW_OK;
1309 queue->unexpected = FALSE;
1311 gst_pad_start_task (pad, (GstTaskFunction) gst_queue_loop, pad);
1312 GST_QUEUE_MUTEX_UNLOCK (queue);
1314 /* step 1, unblock loop function */
1315 GST_QUEUE_MUTEX_LOCK (queue);
1316 queue->srcresult = GST_FLOW_FLUSHING;
1317 /* the item add signal will unblock */
1318 g_cond_signal (&queue->item_add);
1319 GST_QUEUE_MUTEX_UNLOCK (queue);
1321 /* step 2, make sure streaming finishes */
1322 result = gst_pad_stop_task (pad);
1333 queue_capacity_change (GstQueue * queue)
1335 if (queue->leaky == GST_QUEUE_LEAK_DOWNSTREAM) {
1336 gst_queue_leak_downstream (queue);
1339 /* changing the capacity of the queue must wake up
1340 * the _chain function, it might have more room now
1341 * to store the buffer/event in the queue */
1342 GST_QUEUE_SIGNAL_DEL (queue);
1345 /* Changing the minimum required fill level must
1346 * wake up the _loop function as it might now
1347 * be able to preceed.
1349 #define QUEUE_THRESHOLD_CHANGE(q)\
1350 GST_QUEUE_SIGNAL_ADD (q);
1353 gst_queue_set_property (GObject * object,
1354 guint prop_id, const GValue * value, GParamSpec * pspec)
1356 GstQueue *queue = GST_QUEUE (object);
1358 /* someone could change levels here, and since this
1359 * affects the get/put funcs, we need to lock for safety. */
1360 GST_QUEUE_MUTEX_LOCK (queue);
1363 case PROP_MAX_SIZE_BYTES:
1364 queue->max_size.bytes = g_value_get_uint (value);
1365 queue_capacity_change (queue);
1367 case PROP_MAX_SIZE_BUFFERS:
1368 queue->max_size.buffers = g_value_get_uint (value);
1369 queue_capacity_change (queue);
1371 case PROP_MAX_SIZE_TIME:
1372 queue->max_size.time = g_value_get_uint64 (value);
1373 queue_capacity_change (queue);
1375 case PROP_MIN_THRESHOLD_BYTES:
1376 queue->min_threshold.bytes = g_value_get_uint (value);
1377 queue->orig_min_threshold.bytes = queue->min_threshold.bytes;
1378 QUEUE_THRESHOLD_CHANGE (queue);
1380 case PROP_MIN_THRESHOLD_BUFFERS:
1381 queue->min_threshold.buffers = g_value_get_uint (value);
1382 queue->orig_min_threshold.buffers = queue->min_threshold.buffers;
1383 QUEUE_THRESHOLD_CHANGE (queue);
1385 case PROP_MIN_THRESHOLD_TIME:
1386 queue->min_threshold.time = g_value_get_uint64 (value);
1387 queue->orig_min_threshold.time = queue->min_threshold.time;
1388 QUEUE_THRESHOLD_CHANGE (queue);
1391 queue->leaky = g_value_get_enum (value);
1394 queue->silent = g_value_get_boolean (value);
1397 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1401 GST_QUEUE_MUTEX_UNLOCK (queue);
1405 gst_queue_get_property (GObject * object,
1406 guint prop_id, GValue * value, GParamSpec * pspec)
1408 GstQueue *queue = GST_QUEUE (object);
1410 GST_QUEUE_MUTEX_LOCK (queue);
1413 case PROP_CUR_LEVEL_BYTES:
1414 g_value_set_uint (value, queue->cur_level.bytes);
1416 case PROP_CUR_LEVEL_BUFFERS:
1417 g_value_set_uint (value, queue->cur_level.buffers);
1419 case PROP_CUR_LEVEL_TIME:
1420 g_value_set_uint64 (value, queue->cur_level.time);
1422 case PROP_MAX_SIZE_BYTES:
1423 g_value_set_uint (value, queue->max_size.bytes);
1425 case PROP_MAX_SIZE_BUFFERS:
1426 g_value_set_uint (value, queue->max_size.buffers);
1428 case PROP_MAX_SIZE_TIME:
1429 g_value_set_uint64 (value, queue->max_size.time);
1431 case PROP_MIN_THRESHOLD_BYTES:
1432 g_value_set_uint (value, queue->min_threshold.bytes);
1434 case PROP_MIN_THRESHOLD_BUFFERS:
1435 g_value_set_uint (value, queue->min_threshold.buffers);
1437 case PROP_MIN_THRESHOLD_TIME:
1438 g_value_set_uint64 (value, queue->min_threshold.time);
1441 g_value_set_enum (value, queue->leaky);
1444 g_value_set_boolean (value, queue->silent);
1447 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1451 GST_QUEUE_MUTEX_UNLOCK (queue);