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, \
95 gst_queue_array_get_length (queue->queue))
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
357 g_object_class_install_property (gobject_class, PROP_SILENT,
358 g_param_spec_boolean ("silent", "Silent",
359 "Don't emit queue signals", FALSE,
360 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
362 gobject_class->finalize = gst_queue_finalize;
364 gst_element_class_set_static_metadata (gstelement_class,
366 "Generic", "Simple data queue", "Erik Walthinsen <omega@cse.ogi.edu>");
367 gst_element_class_add_pad_template (gstelement_class,
368 gst_static_pad_template_get (&srctemplate));
369 gst_element_class_add_pad_template (gstelement_class,
370 gst_static_pad_template_get (&sinktemplate));
372 /* Registering debug symbols for function pointers */
373 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_src_activate_mode);
374 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_sink_event);
375 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_sink_query);
376 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_src_event);
377 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_handle_src_query);
378 GST_DEBUG_REGISTER_FUNCPTR (gst_queue_chain);
382 gst_queue_init (GstQueue * queue)
384 queue->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
386 gst_pad_set_chain_function (queue->sinkpad, gst_queue_chain);
387 gst_pad_set_activatemode_function (queue->sinkpad,
388 gst_queue_sink_activate_mode);
389 gst_pad_set_event_function (queue->sinkpad, gst_queue_handle_sink_event);
390 gst_pad_set_query_function (queue->sinkpad, gst_queue_handle_sink_query);
391 GST_PAD_SET_PROXY_CAPS (queue->sinkpad);
392 gst_element_add_pad (GST_ELEMENT (queue), queue->sinkpad);
394 queue->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
396 gst_pad_set_activatemode_function (queue->srcpad,
397 gst_queue_src_activate_mode);
398 gst_pad_set_event_function (queue->srcpad, gst_queue_handle_src_event);
399 gst_pad_set_query_function (queue->srcpad, gst_queue_handle_src_query);
400 GST_PAD_SET_PROXY_CAPS (queue->srcpad);
401 gst_element_add_pad (GST_ELEMENT (queue), queue->srcpad);
403 GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
404 queue->max_size.buffers = DEFAULT_MAX_SIZE_BUFFERS;
405 queue->max_size.bytes = DEFAULT_MAX_SIZE_BYTES;
406 queue->max_size.time = DEFAULT_MAX_SIZE_TIME;
407 GST_QUEUE_CLEAR_LEVEL (queue->min_threshold);
408 GST_QUEUE_CLEAR_LEVEL (queue->orig_min_threshold);
409 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
410 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
411 queue->head_needs_discont = queue->tail_needs_discont = FALSE;
413 queue->leaky = GST_QUEUE_NO_LEAK;
414 queue->srcresult = GST_FLOW_FLUSHING;
416 g_mutex_init (&queue->qlock);
417 g_cond_init (&queue->item_add);
418 g_cond_init (&queue->item_del);
420 queue->queue = gst_queue_array_new (DEFAULT_MAX_SIZE_BUFFERS * 3 / 2);
422 queue->sinktime = GST_CLOCK_TIME_NONE;
423 queue->srctime = GST_CLOCK_TIME_NONE;
425 queue->sink_tainted = TRUE;
426 queue->src_tainted = TRUE;
428 queue->newseg_applied_to_src = FALSE;
430 GST_DEBUG_OBJECT (queue,
431 "initialized queue's not_empty & not_full conditions");
434 /* called only once, as opposed to dispose */
436 gst_queue_finalize (GObject * object)
439 GstQueue *queue = GST_QUEUE (object);
441 GST_DEBUG_OBJECT (queue, "finalizing queue");
443 while (!gst_queue_array_is_empty (queue->queue)) {
444 data = gst_queue_array_pop_head (queue->queue);
445 /* FIXME: if it's a query, shouldn't we unref that too? */
446 if (!GST_IS_QUERY (data))
447 gst_mini_object_unref (data);
449 gst_queue_array_free (queue->queue);
451 g_mutex_clear (&queue->qlock);
452 g_cond_clear (&queue->item_add);
453 g_cond_clear (&queue->item_del);
455 G_OBJECT_CLASS (parent_class)->finalize (object);
458 /* calculate the diff between running time on the sink and src of the queue.
459 * This is the total amount of time in the queue. */
461 update_time_level (GstQueue * queue)
463 gint64 sink_time, src_time;
465 if (queue->sink_tainted) {
466 GST_LOG_OBJECT (queue, "update sink time");
468 gst_segment_to_running_time (&queue->sink_segment, GST_FORMAT_TIME,
469 queue->sink_segment.position);
470 queue->sink_tainted = FALSE;
472 sink_time = queue->sinktime;
474 if (queue->src_tainted) {
475 GST_LOG_OBJECT (queue, "update src time");
477 gst_segment_to_running_time (&queue->src_segment, GST_FORMAT_TIME,
478 queue->src_segment.position);
479 queue->src_tainted = FALSE;
481 src_time = queue->srctime;
483 GST_LOG_OBJECT (queue, "sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT,
484 GST_TIME_ARGS (sink_time), GST_TIME_ARGS (src_time));
486 if (sink_time >= src_time)
487 queue->cur_level.time = sink_time - src_time;
489 queue->cur_level.time = 0;
492 /* take a SEGMENT event and apply the values to segment, updating the time
495 apply_segment (GstQueue * queue, GstEvent * event, GstSegment * segment,
498 gst_event_copy_segment (event, segment);
500 /* now configure the values, we use these to track timestamps on the
502 if (segment->format != GST_FORMAT_TIME) {
503 /* non-time format, pretent the current time segment is closed with a
504 * 0 start and unknown stop time. */
505 segment->format = GST_FORMAT_TIME;
511 queue->sink_tainted = TRUE;
513 queue->src_tainted = TRUE;
515 GST_DEBUG_OBJECT (queue, "configured SEGMENT %" GST_SEGMENT_FORMAT, segment);
517 /* segment can update the time level of the queue */
518 update_time_level (queue);
521 /* take a buffer and update segment, updating the time level of the queue. */
523 apply_buffer (GstQueue * queue, GstBuffer * buffer, GstSegment * segment,
524 gboolean with_duration, gboolean sink)
526 GstClockTime duration, timestamp;
528 timestamp = GST_BUFFER_TIMESTAMP (buffer);
529 duration = GST_BUFFER_DURATION (buffer);
531 /* if no timestamp is set, assume it's continuous with the previous
533 if (timestamp == GST_CLOCK_TIME_NONE)
534 timestamp = segment->position;
537 if (with_duration && duration != GST_CLOCK_TIME_NONE)
538 timestamp += duration;
540 GST_LOG_OBJECT (queue, "position updated to %" GST_TIME_FORMAT,
541 GST_TIME_ARGS (timestamp));
543 segment->position = timestamp;
545 queue->sink_tainted = TRUE;
547 queue->src_tainted = TRUE;
550 /* calc diff with other end */
551 update_time_level (queue);
555 gst_queue_locked_flush (GstQueue * queue)
559 while (!gst_queue_array_is_empty (queue->queue)) {
560 data = gst_queue_array_pop_head (queue->queue);
561 /* Then lose another reference because we are supposed to destroy that
562 data when flushing */
563 if (!GST_IS_QUERY (data))
564 gst_mini_object_unref (data);
566 GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
567 queue->min_threshold.buffers = queue->orig_min_threshold.buffers;
568 queue->min_threshold.bytes = queue->orig_min_threshold.bytes;
569 queue->min_threshold.time = queue->orig_min_threshold.time;
570 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
571 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
572 queue->head_needs_discont = queue->tail_needs_discont = FALSE;
574 queue->sinktime = queue->srctime = GST_CLOCK_TIME_NONE;
575 queue->sink_tainted = queue->src_tainted = TRUE;
577 /* we deleted a lot of something */
578 GST_QUEUE_SIGNAL_DEL (queue);
581 /* enqueue an item an update the level stats, with QUEUE_LOCK */
583 gst_queue_locked_enqueue_buffer (GstQueue * queue, gpointer item)
585 GstBuffer *buffer = GST_BUFFER_CAST (item);
587 /* add buffer to the statistics */
588 queue->cur_level.buffers++;
589 queue->cur_level.bytes += gst_buffer_get_size (buffer);
590 apply_buffer (queue, buffer, &queue->sink_segment, TRUE, TRUE);
593 gst_queue_array_push_tail (queue->queue, item);
594 GST_QUEUE_SIGNAL_ADD (queue);
598 gst_queue_locked_enqueue_event (GstQueue * queue, gpointer item)
600 GstEvent *event = GST_EVENT_CAST (item);
602 switch (GST_EVENT_TYPE (event)) {
604 /* Zero the thresholds, this makes sure the queue is completely
605 * filled and we can read all data from the queue. */
606 GST_QUEUE_CLEAR_LEVEL (queue->min_threshold);
607 /* mark the queue as EOS. This prevents us from accepting more data. */
608 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from upstream");
611 case GST_EVENT_SEGMENT:
612 apply_segment (queue, event, &queue->sink_segment, TRUE);
613 /* if the queue is empty, apply sink segment on the source */
614 if (gst_queue_array_is_empty (queue->queue)) {
615 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "Apply segment on srcpad");
616 apply_segment (queue, event, &queue->src_segment, FALSE);
617 queue->newseg_applied_to_src = TRUE;
619 /* a new segment allows us to accept more buffers if we got EOS
621 queue->unexpected = FALSE;
628 gst_queue_array_push_tail (queue->queue, item);
629 GST_QUEUE_SIGNAL_ADD (queue);
632 /* dequeue an item from the queue and update level stats, with QUEUE_LOCK */
633 static GstMiniObject *
634 gst_queue_locked_dequeue (GstQueue * queue)
638 item = gst_queue_array_pop_head (queue->queue);
642 if (GST_IS_BUFFER (item)) {
643 GstBuffer *buffer = GST_BUFFER_CAST (item);
645 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
646 "retrieved buffer %p from queue", buffer);
648 queue->cur_level.buffers--;
649 queue->cur_level.bytes -= gst_buffer_get_size (buffer);
650 apply_buffer (queue, buffer, &queue->src_segment, TRUE, FALSE);
652 /* if the queue is empty now, update the other side */
653 if (queue->cur_level.buffers == 0)
654 queue->cur_level.time = 0;
656 } else if (GST_IS_EVENT (item)) {
657 GstEvent *event = GST_EVENT_CAST (item);
659 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
660 "retrieved event %p from queue", event);
662 switch (GST_EVENT_TYPE (event)) {
664 /* queue is empty now that we dequeued the EOS */
665 GST_QUEUE_CLEAR_LEVEL (queue->cur_level);
667 case GST_EVENT_SEGMENT:
668 /* apply newsegment if it has not already been applied */
669 if (G_LIKELY (!queue->newseg_applied_to_src)) {
670 apply_segment (queue, event, &queue->src_segment, FALSE);
672 queue->newseg_applied_to_src = FALSE;
678 } else if (GST_IS_QUERY (item)) {
679 GstQuery *query = GST_QUERY_CAST (item);
681 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
682 "retrieved query %p from queue", query);
685 ("Unexpected item %p dequeued from queue %s (refcounting problem?)",
686 item, GST_OBJECT_NAME (queue));
689 GST_QUEUE_SIGNAL_DEL (queue);
696 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "the queue is empty");
702 gst_queue_handle_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
706 queue = GST_QUEUE (parent);
708 switch (GST_EVENT_TYPE (event)) {
709 case GST_EVENT_FLUSH_START:
711 STATUS (queue, pad, "received flush start event");
713 gst_pad_push_event (queue->srcpad, event);
715 /* now unblock the chain function */
716 GST_QUEUE_MUTEX_LOCK (queue);
717 queue->srcresult = GST_FLOW_FLUSHING;
718 /* unblock the loop and chain functions */
719 GST_QUEUE_SIGNAL_ADD (queue);
720 GST_QUEUE_SIGNAL_DEL (queue);
721 GST_QUEUE_MUTEX_UNLOCK (queue);
723 /* make sure it pauses, this should happen since we sent
724 * flush_start downstream. */
725 gst_pad_pause_task (queue->srcpad);
726 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "loop stopped");
729 case GST_EVENT_FLUSH_STOP:
731 STATUS (queue, pad, "received flush stop event");
733 gst_pad_push_event (queue->srcpad, event);
735 GST_QUEUE_MUTEX_LOCK (queue);
736 gst_queue_locked_flush (queue);
737 queue->srcresult = GST_FLOW_OK;
739 queue->unexpected = FALSE;
740 gst_pad_start_task (queue->srcpad, (GstTaskFunction) gst_queue_loop,
741 queue->srcpad, NULL);
742 GST_QUEUE_MUTEX_UNLOCK (queue);
744 STATUS (queue, pad, "after flush");
748 if (GST_EVENT_IS_SERIALIZED (event)) {
749 /* serialized events go in the queue */
750 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
751 /* refuse more events on EOS */
754 gst_queue_locked_enqueue_event (queue, event);
755 GST_QUEUE_MUTEX_UNLOCK (queue);
757 /* non-serialized events are passed upstream. */
758 gst_pad_push_event (queue->srcpad, event);
768 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
769 "refusing event, we are flushing");
770 GST_QUEUE_MUTEX_UNLOCK (queue);
771 gst_event_unref (event);
776 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "refusing event, we are EOS");
777 GST_QUEUE_MUTEX_UNLOCK (queue);
778 gst_event_unref (event);
784 gst_queue_handle_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
786 GstQueue *queue = GST_QUEUE_CAST (parent);
789 switch (GST_QUERY_TYPE (query)) {
791 if (G_UNLIKELY (GST_QUERY_IS_SERIALIZED (query))) {
792 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
793 GST_LOG_OBJECT (queue, "queuing query %p (%s)", query,
794 GST_QUERY_TYPE_NAME (query));
795 gst_queue_array_push_tail (queue->queue, query);
796 GST_QUEUE_SIGNAL_ADD (queue);
797 while (!gst_queue_array_is_empty (queue->queue)) {
798 /* for as long as the queue has items, we know the query is
800 GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing);
802 res = queue->last_query;
803 GST_QUEUE_MUTEX_UNLOCK (queue);
805 res = gst_pad_query_default (pad, parent, query);
814 GST_DEBUG_OBJECT (queue, "we are flushing");
815 GST_QUEUE_MUTEX_UNLOCK (queue);
821 gst_queue_is_empty (GstQueue * queue)
825 if (gst_queue_array_is_empty (queue->queue))
828 /* Only consider the queue empty if the minimum thresholds
829 * are not reached and data is at the queue head. Otherwise
830 * we would block forever on serialized queries.
832 head = gst_queue_array_peek_head (queue->queue);
833 if (!GST_IS_BUFFER (head) && !GST_IS_BUFFER_LIST (head))
836 /* It is possible that a max size is reached before all min thresholds are.
837 * Therefore, only consider it empty if it is not filled. */
838 return ((queue->min_threshold.buffers > 0 &&
839 queue->cur_level.buffers < queue->min_threshold.buffers) ||
840 (queue->min_threshold.bytes > 0 &&
841 queue->cur_level.bytes < queue->min_threshold.bytes) ||
842 (queue->min_threshold.time > 0 &&
843 queue->cur_level.time < queue->min_threshold.time)) &&
844 !gst_queue_is_filled (queue);
848 gst_queue_is_filled (GstQueue * queue)
850 return (((queue->max_size.buffers > 0 &&
851 queue->cur_level.buffers >= queue->max_size.buffers) ||
852 (queue->max_size.bytes > 0 &&
853 queue->cur_level.bytes >= queue->max_size.bytes) ||
854 (queue->max_size.time > 0 &&
855 queue->cur_level.time >= queue->max_size.time)));
859 gst_queue_leak_downstream (GstQueue * queue)
861 /* for as long as the queue is filled, dequeue an item and discard it */
862 while (gst_queue_is_filled (queue)) {
865 leak = gst_queue_locked_dequeue (queue);
866 /* there is nothing to dequeue and the queue is still filled.. This should
868 g_assert (leak != NULL);
870 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
871 "queue is full, leaking item %p on downstream end", leak);
872 if (!GST_IS_QUERY (leak))
873 gst_mini_object_unref (leak);
875 /* last buffer needs to get a DISCONT flag */
876 queue->head_needs_discont = TRUE;
881 gst_queue_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
884 GstClockTime duration, timestamp;
886 queue = GST_QUEUE_CAST (parent);
888 /* we have to lock the queue since we span threads */
889 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
890 /* when we received EOS, we refuse any more data */
893 if (queue->unexpected)
896 timestamp = GST_BUFFER_TIMESTAMP (buffer);
897 duration = GST_BUFFER_DURATION (buffer);
899 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received buffer %p of size %"
900 G_GSIZE_FORMAT ", time %" GST_TIME_FORMAT ", duration %"
901 GST_TIME_FORMAT, buffer, gst_buffer_get_size (buffer),
902 GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
904 /* We make space available if we're "full" according to whatever
905 * the user defined as "full". Note that this only applies to buffers.
906 * We always handle events and they don't count in our statistics. */
907 while (gst_queue_is_filled (queue)) {
908 if (!queue->silent) {
909 GST_QUEUE_MUTEX_UNLOCK (queue);
910 g_signal_emit (queue, gst_queue_signals[SIGNAL_OVERRUN], 0);
911 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
912 /* we recheck, the signal could have changed the thresholds */
913 if (!gst_queue_is_filled (queue))
917 /* how are we going to make space for this buffer? */
918 switch (queue->leaky) {
919 case GST_QUEUE_LEAK_UPSTREAM:
920 /* next buffer needs to get a DISCONT flag */
921 queue->tail_needs_discont = TRUE;
922 /* leak current buffer */
923 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
924 "queue is full, leaking buffer on upstream end");
925 /* now we can clean up and exit right away */
927 case GST_QUEUE_LEAK_DOWNSTREAM:
928 gst_queue_leak_downstream (queue);
931 g_warning ("Unknown leaky type, using default");
933 case GST_QUEUE_NO_LEAK:
935 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
936 "queue is full, waiting for free space");
938 /* don't leak. Instead, wait for space to be available */
940 /* for as long as the queue is filled, wait till an item was deleted. */
941 GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing);
942 } while (gst_queue_is_filled (queue));
944 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not full");
946 if (!queue->silent) {
947 GST_QUEUE_MUTEX_UNLOCK (queue);
948 g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0);
949 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
956 if (queue->tail_needs_discont) {
957 GstBuffer *subbuffer = gst_buffer_make_writable (buffer);
961 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
963 GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT");
965 queue->tail_needs_discont = FALSE;
968 /* put buffer in queue now */
969 gst_queue_locked_enqueue_buffer (queue, buffer);
970 GST_QUEUE_MUTEX_UNLOCK (queue);
974 /* special conditions */
977 GST_QUEUE_MUTEX_UNLOCK (queue);
979 gst_buffer_unref (buffer);
985 GstFlowReturn ret = queue->srcresult;
987 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
988 "exit because task paused, reason: %s", gst_flow_get_name (ret));
989 GST_QUEUE_MUTEX_UNLOCK (queue);
990 gst_buffer_unref (buffer);
996 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
997 GST_QUEUE_MUTEX_UNLOCK (queue);
999 gst_buffer_unref (buffer);
1001 return GST_FLOW_EOS;
1005 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
1006 GST_QUEUE_MUTEX_UNLOCK (queue);
1008 gst_buffer_unref (buffer);
1010 return GST_FLOW_EOS;
1014 /* dequeue an item from the queue an push it downstream. This functions returns
1015 * the result of the push. */
1016 static GstFlowReturn
1017 gst_queue_push_one (GstQueue * queue)
1019 GstFlowReturn result = GST_FLOW_OK;
1020 GstMiniObject *data;
1022 data = gst_queue_locked_dequeue (queue);
1027 if (GST_IS_BUFFER (data)) {
1030 buffer = GST_BUFFER_CAST (data);
1032 if (queue->head_needs_discont) {
1033 GstBuffer *subbuffer = gst_buffer_make_writable (buffer);
1037 GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
1039 GST_DEBUG_OBJECT (queue, "Could not mark buffer as DISCONT");
1041 queue->head_needs_discont = FALSE;
1044 GST_QUEUE_MUTEX_UNLOCK (queue);
1045 result = gst_pad_push (queue->srcpad, buffer);
1047 /* need to check for srcresult here as well */
1048 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1050 if (result == GST_FLOW_EOS) {
1051 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from downstream");
1052 /* stop pushing buffers, we dequeue all items until we see an item that we
1053 * can push again, which is EOS or SEGMENT. If there is nothing in the
1054 * queue we can push, we set a flag to make the sinkpad refuse more
1055 * buffers with an EOS return value. */
1056 while ((data = gst_queue_locked_dequeue (queue))) {
1057 if (GST_IS_BUFFER (data)) {
1058 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1059 "dropping EOS buffer %p", data);
1060 gst_buffer_unref (GST_BUFFER_CAST (data));
1061 } else if (GST_IS_EVENT (data)) {
1062 GstEvent *event = GST_EVENT_CAST (data);
1063 GstEventType type = GST_EVENT_TYPE (event);
1065 if (type == GST_EVENT_EOS || type == GST_EVENT_SEGMENT) {
1066 /* we found a pushable item in the queue, push it out */
1067 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1068 "pushing pushable event %s after EOS",
1069 GST_EVENT_TYPE_NAME (event));
1072 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1073 "dropping EOS event %p", event);
1074 gst_event_unref (event);
1075 } else if (GST_IS_QUERY (data)) {
1076 GstQuery *query = GST_QUERY_CAST (data);
1078 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1079 "dropping query %p because of EOS", query);
1080 queue->last_query = FALSE;
1083 /* no more items in the queue. Set the unexpected flag so that upstream
1084 * make us refuse any more buffers on the sinkpad. Since we will still
1085 * accept EOS and SEGMENT we return _FLOW_OK to the caller so that the
1086 * task function does not shut down. */
1087 queue->unexpected = TRUE;
1088 result = GST_FLOW_OK;
1090 } else if (GST_IS_EVENT (data)) {
1091 GstEvent *event = GST_EVENT_CAST (data);
1092 GstEventType type = GST_EVENT_TYPE (event);
1094 GST_QUEUE_MUTEX_UNLOCK (queue);
1096 gst_pad_push_event (queue->srcpad, event);
1098 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1099 /* if we're EOS, return EOS so that the task pauses. */
1100 if (type == GST_EVENT_EOS) {
1101 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1102 "pushed EOS event %p, return EOS", event);
1103 result = GST_FLOW_EOS;
1105 } else if (GST_IS_QUERY (data)) {
1106 GstQuery *query = GST_QUERY_CAST (data);
1108 queue->last_query = gst_pad_peer_query (queue->srcpad, query);
1109 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1110 "did query %p, return %d", query, queue->last_query);
1117 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1118 "exit because we have no item in the queue");
1119 return GST_FLOW_ERROR;
1123 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are flushing");
1124 return GST_FLOW_FLUSHING;
1129 gst_queue_loop (GstPad * pad)
1134 queue = (GstQueue *) GST_PAD_PARENT (pad);
1136 /* have to lock for thread-safety */
1137 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1139 while (gst_queue_is_empty (queue)) {
1140 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is empty");
1141 if (!queue->silent) {
1142 GST_QUEUE_MUTEX_UNLOCK (queue);
1143 g_signal_emit (queue, gst_queue_signals[SIGNAL_UNDERRUN], 0);
1144 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1147 /* we recheck, the signal could have changed the thresholds */
1148 while (gst_queue_is_empty (queue)) {
1149 GST_QUEUE_WAIT_ADD_CHECK (queue, out_flushing);
1152 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is not empty");
1153 if (!queue->silent) {
1154 GST_QUEUE_MUTEX_UNLOCK (queue);
1155 g_signal_emit (queue, gst_queue_signals[SIGNAL_RUNNING], 0);
1156 g_signal_emit (queue, gst_queue_signals[SIGNAL_PUSHING], 0);
1157 GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
1161 ret = gst_queue_push_one (queue);
1162 queue->srcresult = ret;
1163 if (ret != GST_FLOW_OK)
1166 GST_QUEUE_MUTEX_UNLOCK (queue);
1173 gboolean eos = queue->eos;
1174 GstFlowReturn ret = queue->srcresult;
1176 gst_pad_pause_task (queue->srcpad);
1177 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
1178 "pause task, reason: %s", gst_flow_get_name (ret));
1179 if (ret == GST_FLOW_FLUSHING)
1180 gst_queue_locked_flush (queue);
1182 GST_QUEUE_SIGNAL_DEL (queue);
1183 GST_QUEUE_MUTEX_UNLOCK (queue);
1184 /* let app know about us giving up if upstream is not expected to do so */
1185 /* EOS is already taken care of elsewhere */
1186 if (eos && (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS)) {
1187 GST_ELEMENT_ERROR (queue, STREAM, FAILED,
1188 (_("Internal data flow error.")),
1189 ("streaming task paused, reason %s (%d)",
1190 gst_flow_get_name (ret), ret));
1191 gst_pad_push_event (queue->srcpad, gst_event_new_eos ());
1198 gst_queue_handle_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
1200 gboolean res = TRUE;
1201 GstQueue *queue = GST_QUEUE (parent);
1203 #ifndef GST_DISABLE_GST_DEBUG
1204 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%d)",
1205 event, GST_EVENT_TYPE (event));
1208 res = gst_pad_push_event (queue->sinkpad, event);
1214 gst_queue_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
1216 GstQueue *queue = GST_QUEUE (parent);
1219 switch (GST_QUERY_TYPE (query)) {
1220 case GST_QUERY_SCHEDULING:{
1221 gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
1226 res = gst_pad_query_default (pad, parent, query);
1233 /* Adjust peer response for data contained in queue */
1234 switch (GST_QUERY_TYPE (query)) {
1235 case GST_QUERY_POSITION:
1240 /* get peer position */
1241 gst_query_parse_position (query, &format, &peer_pos);
1243 /* FIXME: this code assumes that there's no discont in the queue */
1245 case GST_FORMAT_BYTES:
1246 peer_pos -= queue->cur_level.bytes;
1248 case GST_FORMAT_TIME:
1249 peer_pos -= queue->cur_level.time;
1252 GST_DEBUG_OBJECT (queue, "Can't adjust query in %s format, don't "
1253 "know how to adjust value", gst_format_get_name (format));
1256 /* set updated position */
1257 gst_query_set_position (query, format, peer_pos);
1260 case GST_QUERY_LATENCY:
1263 GstClockTime min, max;
1265 gst_query_parse_latency (query, &live, &min, &max);
1267 /* we can delay up to the limit of the queue in time. If we have no time
1268 * limit, the best thing we can do is to return an infinite delay. In
1269 * reality a better estimate would be the byte/buffer rate but that is not
1270 * possible right now. */
1271 if (queue->max_size.time > 0 && max != -1)
1272 max += queue->max_size.time;
1276 /* adjust for min-threshold */
1277 if (queue->min_threshold.time > 0 && min != -1)
1278 min += queue->min_threshold.time;
1280 gst_query_set_latency (query, live, min, max);
1284 /* peer handled other queries */
1292 gst_queue_sink_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
1298 queue = GST_QUEUE (parent);
1301 case GST_PAD_MODE_PUSH:
1303 GST_QUEUE_MUTEX_LOCK (queue);
1304 queue->srcresult = GST_FLOW_OK;
1306 queue->unexpected = FALSE;
1307 GST_QUEUE_MUTEX_UNLOCK (queue);
1309 /* step 1, unblock chain function */
1310 GST_QUEUE_MUTEX_LOCK (queue);
1311 queue->srcresult = GST_FLOW_FLUSHING;
1312 gst_queue_locked_flush (queue);
1313 GST_QUEUE_MUTEX_UNLOCK (queue);
1325 gst_queue_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
1331 queue = GST_QUEUE (parent);
1334 case GST_PAD_MODE_PUSH:
1336 GST_QUEUE_MUTEX_LOCK (queue);
1337 queue->srcresult = GST_FLOW_OK;
1339 queue->unexpected = FALSE;
1341 gst_pad_start_task (pad, (GstTaskFunction) gst_queue_loop, pad,
1343 GST_QUEUE_MUTEX_UNLOCK (queue);
1345 /* step 1, unblock loop function */
1346 GST_QUEUE_MUTEX_LOCK (queue);
1347 queue->srcresult = GST_FLOW_FLUSHING;
1348 /* the item add signal will unblock */
1349 g_cond_signal (&queue->item_add);
1350 GST_QUEUE_MUTEX_UNLOCK (queue);
1352 /* step 2, make sure streaming finishes */
1353 result = gst_pad_stop_task (pad);
1364 queue_capacity_change (GstQueue * queue)
1366 if (queue->leaky == GST_QUEUE_LEAK_DOWNSTREAM) {
1367 gst_queue_leak_downstream (queue);
1370 /* changing the capacity of the queue must wake up
1371 * the _chain function, it might have more room now
1372 * to store the buffer/event in the queue */
1373 GST_QUEUE_SIGNAL_DEL (queue);
1376 /* Changing the minimum required fill level must
1377 * wake up the _loop function as it might now
1378 * be able to preceed.
1380 #define QUEUE_THRESHOLD_CHANGE(q)\
1381 GST_QUEUE_SIGNAL_ADD (q);
1384 gst_queue_set_property (GObject * object,
1385 guint prop_id, const GValue * value, GParamSpec * pspec)
1387 GstQueue *queue = GST_QUEUE (object);
1389 /* someone could change levels here, and since this
1390 * affects the get/put funcs, we need to lock for safety. */
1391 GST_QUEUE_MUTEX_LOCK (queue);
1394 case PROP_MAX_SIZE_BYTES:
1395 queue->max_size.bytes = g_value_get_uint (value);
1396 queue_capacity_change (queue);
1398 case PROP_MAX_SIZE_BUFFERS:
1399 queue->max_size.buffers = g_value_get_uint (value);
1400 queue_capacity_change (queue);
1402 case PROP_MAX_SIZE_TIME:
1403 queue->max_size.time = g_value_get_uint64 (value);
1404 queue_capacity_change (queue);
1406 case PROP_MIN_THRESHOLD_BYTES:
1407 queue->min_threshold.bytes = g_value_get_uint (value);
1408 queue->orig_min_threshold.bytes = queue->min_threshold.bytes;
1409 QUEUE_THRESHOLD_CHANGE (queue);
1411 case PROP_MIN_THRESHOLD_BUFFERS:
1412 queue->min_threshold.buffers = g_value_get_uint (value);
1413 queue->orig_min_threshold.buffers = queue->min_threshold.buffers;
1414 QUEUE_THRESHOLD_CHANGE (queue);
1416 case PROP_MIN_THRESHOLD_TIME:
1417 queue->min_threshold.time = g_value_get_uint64 (value);
1418 queue->orig_min_threshold.time = queue->min_threshold.time;
1419 QUEUE_THRESHOLD_CHANGE (queue);
1422 queue->leaky = g_value_get_enum (value);
1425 queue->silent = g_value_get_boolean (value);
1428 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1432 GST_QUEUE_MUTEX_UNLOCK (queue);
1436 gst_queue_get_property (GObject * object,
1437 guint prop_id, GValue * value, GParamSpec * pspec)
1439 GstQueue *queue = GST_QUEUE (object);
1441 GST_QUEUE_MUTEX_LOCK (queue);
1444 case PROP_CUR_LEVEL_BYTES:
1445 g_value_set_uint (value, queue->cur_level.bytes);
1447 case PROP_CUR_LEVEL_BUFFERS:
1448 g_value_set_uint (value, queue->cur_level.buffers);
1450 case PROP_CUR_LEVEL_TIME:
1451 g_value_set_uint64 (value, queue->cur_level.time);
1453 case PROP_MAX_SIZE_BYTES:
1454 g_value_set_uint (value, queue->max_size.bytes);
1456 case PROP_MAX_SIZE_BUFFERS:
1457 g_value_set_uint (value, queue->max_size.buffers);
1459 case PROP_MAX_SIZE_TIME:
1460 g_value_set_uint64 (value, queue->max_size.time);
1462 case PROP_MIN_THRESHOLD_BYTES:
1463 g_value_set_uint (value, queue->min_threshold.bytes);
1465 case PROP_MIN_THRESHOLD_BUFFERS:
1466 g_value_set_uint (value, queue->min_threshold.buffers);
1468 case PROP_MIN_THRESHOLD_TIME:
1469 g_value_set_uint64 (value, queue->min_threshold.time);
1472 g_value_set_enum (value, queue->leaky);
1475 g_value_set_boolean (value, queue->silent);
1478 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1482 GST_QUEUE_MUTEX_UNLOCK (queue);