2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2003 Colin Walters <cwalters@gnome.org>
4 * 2000,2005,2007 Wim Taymans <wim.taymans@gmail.com>
5 * 2007 Thiago Sousa Santos <thiagoss@lcc.ufcg.edu.br>
6 * SA 2010 ST-Ericsson <benjamin.gaignard@stericsson.com>
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 02111-1307, USA.
27 * SECTION:element-queue2
29 * Data is queued until one of the limits specified by the
30 * #GstQueue2:max-size-buffers, #GstQueue2:max-size-bytes and/or
31 * #GstQueue2:max-size-time properties has been reached. Any attempt to push
32 * more buffers into the queue will block the pushing thread until more space
35 * The queue will create a new thread on the source pad to decouple the
36 * processing on sink and source pad.
38 * You can query how many buffers are queued by reading the
39 * #GstQueue2:current-level-buffers property.
41 * The default queue size limits are 100 buffers, 2MB of data, or
42 * two seconds worth of data, whichever is reached first.
44 * If you set temp-tmpl to a value such as /tmp/gstreamer-XXXXXX, the element
45 * will allocate a random free filename and buffer data in the file.
46 * By using this, it will buffer the entire stream data on the file independently
47 * of the queue size limits, they will only be used for buffering statistics.
49 * Since 0.10.24, setting the temp-location property with a filename is deprecated
50 * because it's impossible to securely open a temporary file in this way. The
51 * property will still be used to notify the application of the allocated
54 * Last reviewed on 2009-07-10 (0.10.24)
61 #include "gstqueue2.h"
63 #include <glib/gstdio.h>
65 #include "gst/gst-i18n-lib.h"
66 #include "gst/glib-compat-private.h"
71 #include <io.h> /* lseek, open, close, read */
73 #define lseek _lseeki64
80 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
85 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
90 GST_DEBUG_CATEGORY_STATIC (queue_debug);
91 #define GST_CAT_DEFAULT (queue_debug)
92 GST_DEBUG_CATEGORY_STATIC (queue_dataflow);
100 #define DEFAULT_BUFFER_SIZE 4096
101 #define QUEUE_IS_USING_TEMP_FILE(queue) ((queue)->temp_location_set || (queue)->temp_template != NULL)
102 #define QUEUE_IS_USING_RING_BUFFER(queue) ((queue)->ring_buffer_max_size != 0) /* for consistency with the above macro */
103 #define QUEUE_IS_USING_QUEUE(queue) (!QUEUE_IS_USING_TEMP_FILE(queue) && !QUEUE_IS_USING_RING_BUFFER (queue))
105 #define QUEUE_MAX_BYTES(queue) MIN((queue)->max_level.bytes, (queue)->ring_buffer_max_size)
107 /* default property values */
108 #define DEFAULT_MAX_SIZE_BUFFERS 100 /* 100 buffers */
109 #define DEFAULT_MAX_SIZE_BYTES (2 * 1024 * 1024) /* 2 MB */
110 #define DEFAULT_MAX_SIZE_TIME 2 * GST_SECOND /* 2 seconds */
111 #define DEFAULT_USE_BUFFERING FALSE
112 #define DEFAULT_USE_RATE_ESTIMATE TRUE
113 #define DEFAULT_LOW_PERCENT 10
114 #define DEFAULT_HIGH_PERCENT 99
115 #define DEFAULT_TEMP_REMOVE TRUE
116 #define DEFAULT_RING_BUFFER_MAX_SIZE 0
121 PROP_CUR_LEVEL_BUFFERS,
122 PROP_CUR_LEVEL_BYTES,
124 PROP_MAX_SIZE_BUFFERS,
128 PROP_USE_RATE_ESTIMATE,
134 PROP_RING_BUFFER_MAX_SIZE,
138 #define GST_QUEUE2_CLEAR_LEVEL(l) G_STMT_START { \
145 #define STATUS(queue, pad, msg) \
146 GST_CAT_LOG_OBJECT (queue_dataflow, queue, \
147 "(%s:%s) " msg ": %u of %u buffers, %u of %u " \
148 "bytes, %" G_GUINT64_FORMAT " of %" G_GUINT64_FORMAT \
149 " ns, %"G_GUINT64_FORMAT" items", \
150 GST_DEBUG_PAD_NAME (pad), \
151 queue->cur_level.buffers, \
152 queue->max_level.buffers, \
153 queue->cur_level.bytes, \
154 queue->max_level.bytes, \
155 queue->cur_level.time, \
156 queue->max_level.time, \
157 (guint64) (!QUEUE_IS_USING_QUEUE(queue) ? \
158 queue->current->writing_pos - queue->current->max_reading_pos : \
159 queue->queue.length))
161 #define GST_QUEUE2_MUTEX_LOCK(q) G_STMT_START { \
162 g_mutex_lock (&q->qlock); \
165 #define GST_QUEUE2_MUTEX_LOCK_CHECK(q,res,label) G_STMT_START { \
166 GST_QUEUE2_MUTEX_LOCK (q); \
167 if (res != GST_FLOW_OK) \
171 #define GST_QUEUE2_MUTEX_UNLOCK(q) G_STMT_START { \
172 g_mutex_unlock (&q->qlock); \
175 #define GST_QUEUE2_WAIT_DEL_CHECK(q, res, label) G_STMT_START { \
176 STATUS (queue, q->sinkpad, "wait for DEL"); \
177 q->waiting_del = TRUE; \
178 g_cond_wait (&q->item_del, &queue->qlock); \
179 q->waiting_del = FALSE; \
180 if (res != GST_FLOW_OK) { \
181 STATUS (queue, q->srcpad, "received DEL wakeup"); \
184 STATUS (queue, q->sinkpad, "received DEL"); \
187 #define GST_QUEUE2_WAIT_ADD_CHECK(q, res, label) G_STMT_START { \
188 STATUS (queue, q->srcpad, "wait for ADD"); \
189 q->waiting_add = TRUE; \
190 g_cond_wait (&q->item_add, &q->qlock); \
191 q->waiting_add = FALSE; \
192 if (res != GST_FLOW_OK) { \
193 STATUS (queue, q->srcpad, "received ADD wakeup"); \
196 STATUS (queue, q->srcpad, "received ADD"); \
199 #define GST_QUEUE2_SIGNAL_DEL(q) G_STMT_START { \
200 if (q->waiting_del) { \
201 STATUS (q, q->srcpad, "signal DEL"); \
202 g_cond_signal (&q->item_del); \
206 #define GST_QUEUE2_SIGNAL_ADD(q) G_STMT_START { \
207 if (q->waiting_add) { \
208 STATUS (q, q->sinkpad, "signal ADD"); \
209 g_cond_signal (&q->item_add); \
214 GST_DEBUG_CATEGORY_INIT (queue_debug, "queue2", 0, "queue element"); \
215 GST_DEBUG_CATEGORY_INIT (queue_dataflow, "queue2_dataflow", 0, \
216 "dataflow inside the queue element");
217 #define gst_queue2_parent_class parent_class
218 G_DEFINE_TYPE_WITH_CODE (GstQueue2, gst_queue2, GST_TYPE_ELEMENT, _do_init);
220 static void gst_queue2_finalize (GObject * object);
222 static void gst_queue2_set_property (GObject * object,
223 guint prop_id, const GValue * value, GParamSpec * pspec);
224 static void gst_queue2_get_property (GObject * object,
225 guint prop_id, GValue * value, GParamSpec * pspec);
227 static GstFlowReturn gst_queue2_chain (GstPad * pad, GstObject * parent,
229 static GstFlowReturn gst_queue2_chain_list (GstPad * pad, GstObject * parent,
230 GstBufferList * buffer_list);
231 static GstFlowReturn gst_queue2_push_one (GstQueue2 * queue);
232 static void gst_queue2_loop (GstPad * pad);
234 static gboolean gst_queue2_handle_sink_event (GstPad * pad, GstObject * parent,
236 static gboolean gst_queue2_handle_sink_query (GstPad * pad, GstObject * parent,
239 static gboolean gst_queue2_handle_src_event (GstPad * pad, GstObject * parent,
241 static gboolean gst_queue2_handle_src_query (GstPad * pad, GstObject * parent,
243 static gboolean gst_queue2_handle_query (GstElement * element,
246 static GstFlowReturn gst_queue2_get_range (GstPad * pad, GstObject * parent,
247 guint64 offset, guint length, GstBuffer ** buffer);
249 static gboolean gst_queue2_src_activate_mode (GstPad * pad, GstObject * parent,
250 GstPadMode mode, gboolean active);
251 static gboolean gst_queue2_sink_activate_mode (GstPad * pad, GstObject * parent,
252 GstPadMode mode, gboolean active);
253 static GstStateChangeReturn gst_queue2_change_state (GstElement * element,
254 GstStateChange transition);
256 static gboolean gst_queue2_is_empty (GstQueue2 * queue);
257 static gboolean gst_queue2_is_filled (GstQueue2 * queue);
259 static void update_cur_level (GstQueue2 * queue, GstQueue2Range * range);
263 GST_QUEUE2_ITEM_TYPE_UNKNOWN = 0,
264 GST_QUEUE2_ITEM_TYPE_BUFFER,
265 GST_QUEUE2_ITEM_TYPE_BUFFER_LIST,
266 GST_QUEUE2_ITEM_TYPE_EVENT
269 /* static guint gst_queue2_signals[LAST_SIGNAL] = { 0 }; */
272 gst_queue2_class_init (GstQueue2Class * klass)
274 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
275 GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
277 gobject_class->set_property = gst_queue2_set_property;
278 gobject_class->get_property = gst_queue2_get_property;
281 g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BYTES,
282 g_param_spec_uint ("current-level-bytes", "Current level (kB)",
283 "Current amount of data in the queue (bytes)",
284 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
285 g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BUFFERS,
286 g_param_spec_uint ("current-level-buffers", "Current level (buffers)",
287 "Current number of buffers in the queue",
288 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
289 g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_TIME,
290 g_param_spec_uint64 ("current-level-time", "Current level (ns)",
291 "Current amount of data in the queue (in ns)",
292 0, G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
294 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BYTES,
295 g_param_spec_uint ("max-size-bytes", "Max. size (kB)",
296 "Max. amount of data in the queue (bytes, 0=disable)",
297 0, G_MAXUINT, DEFAULT_MAX_SIZE_BYTES,
298 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
299 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_BUFFERS,
300 g_param_spec_uint ("max-size-buffers", "Max. size (buffers)",
301 "Max. number of buffers in the queue (0=disable)", 0, G_MAXUINT,
302 DEFAULT_MAX_SIZE_BUFFERS,
303 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
304 g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME,
305 g_param_spec_uint64 ("max-size-time", "Max. size (ns)",
306 "Max. amount of data in the queue (in ns, 0=disable)", 0, G_MAXUINT64,
307 DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
309 g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
310 g_param_spec_boolean ("use-buffering", "Use buffering",
311 "Emit GST_MESSAGE_BUFFERING based on low-/high-percent thresholds",
312 DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
313 g_object_class_install_property (gobject_class, PROP_USE_RATE_ESTIMATE,
314 g_param_spec_boolean ("use-rate-estimate", "Use Rate Estimate",
315 "Estimate the bitrate of the stream to calculate time level",
316 DEFAULT_USE_RATE_ESTIMATE,
317 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
318 g_object_class_install_property (gobject_class, PROP_LOW_PERCENT,
319 g_param_spec_int ("low-percent", "Low percent",
320 "Low threshold for buffering to start. Only used if use-buffering is True",
321 0, 100, DEFAULT_LOW_PERCENT,
322 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
323 g_object_class_install_property (gobject_class, PROP_HIGH_PERCENT,
324 g_param_spec_int ("high-percent", "High percent",
325 "High threshold for buffering to finish. Only used if use-buffering is True",
326 0, 100, DEFAULT_HIGH_PERCENT,
327 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
329 g_object_class_install_property (gobject_class, PROP_TEMP_TEMPLATE,
330 g_param_spec_string ("temp-template", "Temporary File Template",
331 "File template to store temporary files in, should contain directory "
332 "and XXXXXX. (NULL == disabled)",
333 NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
335 g_object_class_install_property (gobject_class, PROP_TEMP_LOCATION,
336 g_param_spec_string ("temp-location", "Temporary File Location",
337 "Location to store temporary files in (Deprecated: Only read this "
338 "property, use temp-template to configure the name template)",
339 NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
342 * GstQueue2:temp-remove
344 * When temp-template is set, remove the temporary file when going to READY.
348 g_object_class_install_property (gobject_class, PROP_TEMP_REMOVE,
349 g_param_spec_boolean ("temp-remove", "Remove the Temporary File",
350 "Remove the temp-location after use",
351 DEFAULT_TEMP_REMOVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
354 * GstQueue2:ring-buffer-max-size
356 * The maximum size of the ring buffer in bytes. If set to 0, the ring
357 * buffer is disabled. Default 0.
361 g_object_class_install_property (gobject_class, PROP_RING_BUFFER_MAX_SIZE,
362 g_param_spec_uint64 ("ring-buffer-max-size",
363 "Max. ring buffer size (bytes)",
364 "Max. amount of data in the ring buffer (bytes, 0 = disabled)",
365 0, G_MAXUINT64, DEFAULT_RING_BUFFER_MAX_SIZE,
366 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
368 /* set several parent class virtual functions */
369 gobject_class->finalize = gst_queue2_finalize;
371 gst_element_class_add_pad_template (gstelement_class,
372 gst_static_pad_template_get (&srctemplate));
373 gst_element_class_add_pad_template (gstelement_class,
374 gst_static_pad_template_get (&sinktemplate));
376 gst_element_class_set_static_metadata (gstelement_class, "Queue 2",
379 "Erik Walthinsen <omega@cse.ogi.edu>, "
380 "Wim Taymans <wim.taymans@gmail.com>");
382 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_queue2_change_state);
383 gstelement_class->query = GST_DEBUG_FUNCPTR (gst_queue2_handle_query);
387 gst_queue2_init (GstQueue2 * queue)
389 queue->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
391 gst_pad_set_chain_function (queue->sinkpad,
392 GST_DEBUG_FUNCPTR (gst_queue2_chain));
393 gst_pad_set_chain_list_function (queue->sinkpad,
394 GST_DEBUG_FUNCPTR (gst_queue2_chain_list));
395 gst_pad_set_activatemode_function (queue->sinkpad,
396 GST_DEBUG_FUNCPTR (gst_queue2_sink_activate_mode));
397 gst_pad_set_event_function (queue->sinkpad,
398 GST_DEBUG_FUNCPTR (gst_queue2_handle_sink_event));
399 gst_pad_set_query_function (queue->sinkpad,
400 GST_DEBUG_FUNCPTR (gst_queue2_handle_sink_query));
401 GST_PAD_SET_PROXY_CAPS (queue->sinkpad);
402 gst_element_add_pad (GST_ELEMENT (queue), queue->sinkpad);
404 queue->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
406 gst_pad_set_activatemode_function (queue->srcpad,
407 GST_DEBUG_FUNCPTR (gst_queue2_src_activate_mode));
408 gst_pad_set_getrange_function (queue->srcpad,
409 GST_DEBUG_FUNCPTR (gst_queue2_get_range));
410 gst_pad_set_event_function (queue->srcpad,
411 GST_DEBUG_FUNCPTR (gst_queue2_handle_src_event));
412 gst_pad_set_query_function (queue->srcpad,
413 GST_DEBUG_FUNCPTR (gst_queue2_handle_src_query));
414 GST_PAD_SET_PROXY_CAPS (queue->srcpad);
415 gst_element_add_pad (GST_ELEMENT (queue), queue->srcpad);
418 GST_QUEUE2_CLEAR_LEVEL (queue->cur_level);
419 queue->max_level.buffers = DEFAULT_MAX_SIZE_BUFFERS;
420 queue->max_level.bytes = DEFAULT_MAX_SIZE_BYTES;
421 queue->max_level.time = DEFAULT_MAX_SIZE_TIME;
422 queue->max_level.rate_time = DEFAULT_MAX_SIZE_TIME;
423 queue->use_buffering = DEFAULT_USE_BUFFERING;
424 queue->use_rate_estimate = DEFAULT_USE_RATE_ESTIMATE;
425 queue->low_percent = DEFAULT_LOW_PERCENT;
426 queue->high_percent = DEFAULT_HIGH_PERCENT;
428 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
429 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
431 queue->sinktime = GST_CLOCK_TIME_NONE;
432 queue->srctime = GST_CLOCK_TIME_NONE;
433 queue->sink_tainted = TRUE;
434 queue->src_tainted = TRUE;
436 queue->srcresult = GST_FLOW_FLUSHING;
437 queue->sinkresult = GST_FLOW_FLUSHING;
438 queue->is_eos = FALSE;
439 queue->in_timer = g_timer_new ();
440 queue->out_timer = g_timer_new ();
442 g_mutex_init (&queue->qlock);
443 queue->waiting_add = FALSE;
444 g_cond_init (&queue->item_add);
445 queue->waiting_del = FALSE;
446 g_cond_init (&queue->item_del);
447 g_queue_init (&queue->queue);
449 queue->buffering_percent = 100;
451 /* tempfile related */
452 queue->temp_template = NULL;
453 queue->temp_location = NULL;
454 queue->temp_location_set = FALSE;
455 queue->temp_remove = DEFAULT_TEMP_REMOVE;
457 queue->ring_buffer = NULL;
458 queue->ring_buffer_max_size = DEFAULT_RING_BUFFER_MAX_SIZE;
460 GST_DEBUG_OBJECT (queue,
461 "initialized queue's not_empty & not_full conditions");
464 /* called only once, as opposed to dispose */
466 gst_queue2_finalize (GObject * object)
468 GstQueue2 *queue = GST_QUEUE2 (object);
470 GST_DEBUG_OBJECT (queue, "finalizing queue");
472 while (!g_queue_is_empty (&queue->queue)) {
473 GstMiniObject *data = g_queue_pop_head (&queue->queue);
475 gst_mini_object_unref (data);
478 g_queue_clear (&queue->queue);
479 g_mutex_clear (&queue->qlock);
480 g_cond_clear (&queue->item_add);
481 g_cond_clear (&queue->item_del);
482 g_timer_destroy (queue->in_timer);
483 g_timer_destroy (queue->out_timer);
485 /* temp_file path cleanup */
486 g_free (queue->temp_template);
487 g_free (queue->temp_location);
489 G_OBJECT_CLASS (parent_class)->finalize (object);
493 debug_ranges (GstQueue2 * queue)
495 GstQueue2Range *walk;
497 for (walk = queue->ranges; walk; walk = walk->next) {
498 GST_DEBUG_OBJECT (queue,
499 "range [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT "] (rb [%"
500 G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT "]), reading %" G_GUINT64_FORMAT
501 " current range? %s", walk->offset, walk->writing_pos, walk->rb_offset,
502 walk->rb_writing_pos, walk->reading_pos,
503 walk == queue->current ? "**y**" : " n ");
507 /* clear all the downloaded ranges */
509 clean_ranges (GstQueue2 * queue)
511 GST_DEBUG_OBJECT (queue, "clean queue ranges");
513 g_slice_free_chain (GstQueue2Range, queue->ranges, next);
514 queue->ranges = NULL;
515 queue->current = NULL;
518 /* find a range that contains @offset or NULL when nothing does */
519 static GstQueue2Range *
520 find_range (GstQueue2 * queue, guint64 offset)
522 GstQueue2Range *range = NULL;
523 GstQueue2Range *walk;
525 /* first do a quick check for the current range */
526 for (walk = queue->ranges; walk; walk = walk->next) {
527 if (offset >= walk->offset && offset <= walk->writing_pos) {
528 /* we can reuse an existing range */
534 GST_DEBUG_OBJECT (queue,
535 "found range for %" G_GUINT64_FORMAT ": [%" G_GUINT64_FORMAT "-%"
536 G_GUINT64_FORMAT "]", offset, range->offset, range->writing_pos);
538 GST_DEBUG_OBJECT (queue, "no range for %" G_GUINT64_FORMAT, offset);
544 update_cur_level (GstQueue2 * queue, GstQueue2Range * range)
546 guint64 max_reading_pos, writing_pos;
548 writing_pos = range->writing_pos;
549 max_reading_pos = range->max_reading_pos;
551 if (writing_pos > max_reading_pos)
552 queue->cur_level.bytes = writing_pos - max_reading_pos;
554 queue->cur_level.bytes = 0;
557 /* make a new range for @offset or reuse an existing range */
558 static GstQueue2Range *
559 add_range (GstQueue2 * queue, guint64 offset)
561 GstQueue2Range *range, *prev, *next;
563 GST_DEBUG_OBJECT (queue, "find range for %" G_GUINT64_FORMAT, offset);
565 if ((range = find_range (queue, offset))) {
566 GST_DEBUG_OBJECT (queue,
567 "reusing range %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT, range->offset,
569 range->writing_pos = offset;
571 GST_DEBUG_OBJECT (queue,
572 "new range %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT, offset, offset);
574 range = g_slice_new0 (GstQueue2Range);
575 range->offset = offset;
576 /* we want to write to the next location in the ring buffer */
577 range->rb_offset = queue->current ? queue->current->rb_writing_pos : 0;
578 range->writing_pos = offset;
579 range->rb_writing_pos = range->rb_offset;
580 range->reading_pos = offset;
581 range->max_reading_pos = offset;
585 next = queue->ranges;
587 if (next->offset > offset) {
588 /* insert before next */
589 GST_DEBUG_OBJECT (queue,
590 "insert before range %p, offset %" G_GUINT64_FORMAT, next,
602 queue->ranges = range;
604 debug_ranges (queue);
606 /* update the stats for this range */
607 update_cur_level (queue, range);
613 /* clear and init the download ranges for offset 0 */
615 init_ranges (GstQueue2 * queue)
617 GST_DEBUG_OBJECT (queue, "init queue ranges");
619 /* get rid of all the current ranges */
620 clean_ranges (queue);
621 /* make a range for offset 0 */
622 queue->current = add_range (queue, 0);
625 /* calculate the diff between running time on the sink and src of the queue.
626 * This is the total amount of time in the queue. */
628 update_time_level (GstQueue2 * queue)
630 if (queue->sink_tainted) {
632 gst_segment_to_running_time (&queue->sink_segment, GST_FORMAT_TIME,
633 queue->sink_segment.position);
634 queue->sink_tainted = FALSE;
637 if (queue->src_tainted) {
639 gst_segment_to_running_time (&queue->src_segment, GST_FORMAT_TIME,
640 queue->src_segment.position);
641 queue->src_tainted = FALSE;
644 GST_DEBUG_OBJECT (queue, "sink %" GST_TIME_FORMAT ", src %" GST_TIME_FORMAT,
645 GST_TIME_ARGS (queue->sinktime), GST_TIME_ARGS (queue->srctime));
647 if (queue->sinktime != GST_CLOCK_TIME_NONE
648 && queue->srctime != GST_CLOCK_TIME_NONE
649 && queue->sinktime >= queue->srctime)
650 queue->cur_level.time = queue->sinktime - queue->srctime;
652 queue->cur_level.time = 0;
655 /* take a SEGMENT event and apply the values to segment, updating the time
658 apply_segment (GstQueue2 * queue, GstEvent * event, GstSegment * segment,
661 gst_event_copy_segment (event, segment);
663 if (segment->format == GST_FORMAT_BYTES) {
664 if (!QUEUE_IS_USING_QUEUE (queue) && is_sink) {
665 /* start is where we'll be getting from and as such writing next */
666 queue->current = add_range (queue, segment->start);
670 /* now configure the values, we use these to track timestamps on the
672 if (segment->format != GST_FORMAT_TIME) {
673 /* non-time format, pretent the current time segment is closed with a
674 * 0 start and unknown stop time. */
675 segment->format = GST_FORMAT_TIME;
681 GST_DEBUG_OBJECT (queue, "configured SEGMENT %" GST_SEGMENT_FORMAT, segment);
684 queue->sink_tainted = TRUE;
686 queue->src_tainted = TRUE;
688 /* segment can update the time level of the queue */
689 update_time_level (queue);
692 /* take a buffer and update segment, updating the time level of the queue. */
694 apply_buffer (GstQueue2 * queue, GstBuffer * buffer, GstSegment * segment,
697 GstClockTime duration, timestamp;
699 timestamp = GST_BUFFER_TIMESTAMP (buffer);
700 duration = GST_BUFFER_DURATION (buffer);
702 /* if no timestamp is set, assume it's continuous with the previous
704 if (timestamp == GST_CLOCK_TIME_NONE)
705 timestamp = segment->position;
708 if (duration != GST_CLOCK_TIME_NONE)
709 timestamp += duration;
711 GST_DEBUG_OBJECT (queue, "position updated to %" GST_TIME_FORMAT,
712 GST_TIME_ARGS (timestamp));
714 segment->position = timestamp;
717 queue->sink_tainted = TRUE;
719 queue->src_tainted = TRUE;
721 /* calc diff with other end */
722 update_time_level (queue);
726 buffer_list_apply_time (GstBuffer ** buf, guint idx, gpointer data)
728 GstClockTime *timestamp = data;
730 GST_TRACE ("buffer %u has ts %" GST_TIME_FORMAT
731 " duration %" GST_TIME_FORMAT, idx,
732 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*buf)),
733 GST_TIME_ARGS (GST_BUFFER_DURATION (*buf)));
735 if (GST_BUFFER_TIMESTAMP_IS_VALID (*buf))
736 *timestamp = GST_BUFFER_TIMESTAMP (*buf);
738 if (GST_BUFFER_DURATION_IS_VALID (*buf))
739 *timestamp += GST_BUFFER_DURATION (*buf);
741 GST_TRACE ("ts now %" GST_TIME_FORMAT, GST_TIME_ARGS (*timestamp));
745 /* take a buffer list and update segment, updating the time level of the queue */
747 apply_buffer_list (GstQueue2 * queue, GstBufferList * buffer_list,
748 GstSegment * segment, gboolean is_sink)
750 GstClockTime timestamp;
752 /* if no timestamp is set, assume it's continuous with the previous time */
753 timestamp = segment->position;
755 gst_buffer_list_foreach (buffer_list, buffer_list_apply_time, ×tamp);
757 GST_DEBUG_OBJECT (queue, "last_stop updated to %" GST_TIME_FORMAT,
758 GST_TIME_ARGS (timestamp));
760 segment->position = timestamp;
763 queue->sink_tainted = TRUE;
765 queue->src_tainted = TRUE;
767 /* calc diff with other end */
768 update_time_level (queue);
772 update_buffering (GstQueue2 * queue)
775 gboolean post = FALSE;
777 if (queue->high_percent <= 0)
780 #define GET_PERCENT(format,alt_max) ((queue->max_level.format) > 0 ? (queue->cur_level.format) * 100 / ((alt_max) > 0 ? MIN ((alt_max), (queue->max_level.format)) : (queue->max_level.format)) : 0)
783 /* on EOS we are always 100% full, we set the var here so that it we can
784 * reuse the logic below to stop buffering */
786 GST_LOG_OBJECT (queue, "we are EOS");
788 /* figure out the percent we are filled, we take the max of all formats. */
790 if (!QUEUE_IS_USING_RING_BUFFER (queue)) {
791 percent = GET_PERCENT (bytes, 0);
793 guint64 rb_size = queue->ring_buffer_max_size;
794 percent = GET_PERCENT (bytes, rb_size);
796 percent = MAX (percent, GET_PERCENT (time, 0));
797 percent = MAX (percent, GET_PERCENT (buffers, 0));
799 /* also apply the rate estimate when we need to */
800 if (queue->use_rate_estimate)
801 percent = MAX (percent, GET_PERCENT (rate_time, 0));
804 if (queue->is_buffering) {
806 /* if we were buffering see if we reached the high watermark */
807 if (percent >= queue->high_percent)
808 queue->is_buffering = FALSE;
810 /* we were not buffering, check if we need to start buffering if we drop
811 * below the low threshold */
812 if (percent < queue->low_percent) {
813 queue->is_buffering = TRUE;
814 queue->buffering_iteration++;
820 GstBufferingMode mode;
821 gint64 buffering_left = -1;
823 /* scale to high percent so that it becomes the 100% mark */
824 percent = percent * 100 / queue->high_percent;
829 if (percent != queue->buffering_percent) {
830 queue->buffering_percent = percent;
832 if (!QUEUE_IS_USING_QUEUE (queue)) {
835 if (QUEUE_IS_USING_RING_BUFFER (queue))
836 mode = GST_BUFFERING_TIMESHIFT;
838 mode = GST_BUFFERING_DOWNLOAD;
840 if (queue->byte_in_rate > 0) {
841 if (gst_pad_peer_query_duration (queue->sinkpad, GST_FORMAT_BYTES,
844 (gdouble) ((duration -
845 queue->current->writing_pos) * 1000) / queue->byte_in_rate;
848 buffering_left = G_MAXINT64;
851 mode = GST_BUFFERING_STREAM;
854 GST_DEBUG_OBJECT (queue, "buffering %d percent", (gint) percent);
855 message = gst_message_new_buffering (GST_OBJECT_CAST (queue),
857 gst_message_set_buffering_stats (message, mode,
858 queue->byte_in_rate, queue->byte_out_rate, buffering_left);
860 gst_element_post_message (GST_ELEMENT_CAST (queue), message);
863 GST_DEBUG_OBJECT (queue, "filled %d percent", (gint) percent);
870 reset_rate_timer (GstQueue2 * queue)
873 queue->bytes_out = 0;
874 queue->byte_in_rate = 0.0;
875 queue->byte_in_period = 0;
876 queue->byte_out_rate = 0.0;
877 queue->last_in_elapsed = 0.0;
878 queue->last_out_elapsed = 0.0;
879 queue->in_timer_started = FALSE;
880 queue->out_timer_started = FALSE;
883 /* the interval in seconds to recalculate the rate */
884 #define RATE_INTERVAL 0.2
885 /* Tuning for rate estimation. We use a large window for the input rate because
886 * it should be stable when connected to a network. The output rate is less
887 * stable (the elements preroll, queues behind a demuxer fill, ...) and should
888 * therefore adapt more quickly.
889 * However, initial input rate may be subject to a burst, and should therefore
890 * initially also adapt more quickly to changes, and only later on give higher
891 * weight to previous values. */
892 #define AVG_IN(avg,val,w1,w2) ((avg) * (w1) + (val) * (w2)) / ((w1) + (w2))
893 #define AVG_OUT(avg,val) ((avg) * 3.0 + (val)) / 4.0
896 update_in_rates (GstQueue2 * queue)
898 gdouble elapsed, period;
899 gdouble byte_in_rate;
901 if (!queue->in_timer_started) {
902 queue->in_timer_started = TRUE;
903 g_timer_start (queue->in_timer);
907 elapsed = g_timer_elapsed (queue->in_timer, NULL);
909 /* recalc after each interval. */
910 if (queue->last_in_elapsed + RATE_INTERVAL < elapsed) {
911 period = elapsed - queue->last_in_elapsed;
913 GST_DEBUG_OBJECT (queue,
914 "rates: period %f, in %" G_GUINT64_FORMAT ", global period %f",
915 period, queue->bytes_in, queue->byte_in_period);
917 byte_in_rate = queue->bytes_in / period;
919 if (queue->byte_in_rate == 0.0)
920 queue->byte_in_rate = byte_in_rate;
922 queue->byte_in_rate = AVG_IN (queue->byte_in_rate, byte_in_rate,
923 (double) queue->byte_in_period, period);
925 /* another data point, cap at 16 for long time running average */
926 if (queue->byte_in_period < 16 * RATE_INTERVAL)
927 queue->byte_in_period += period;
929 /* reset the values to calculate rate over the next interval */
930 queue->last_in_elapsed = elapsed;
934 if (queue->byte_in_rate > 0.0) {
935 queue->cur_level.rate_time =
936 queue->cur_level.bytes / queue->byte_in_rate * GST_SECOND;
938 GST_DEBUG_OBJECT (queue, "rates: in %f, time %" GST_TIME_FORMAT,
939 queue->byte_in_rate, GST_TIME_ARGS (queue->cur_level.rate_time));
943 update_out_rates (GstQueue2 * queue)
945 gdouble elapsed, period;
946 gdouble byte_out_rate;
948 if (!queue->out_timer_started) {
949 queue->out_timer_started = TRUE;
950 g_timer_start (queue->out_timer);
954 elapsed = g_timer_elapsed (queue->out_timer, NULL);
956 /* recalc after each interval. */
957 if (queue->last_out_elapsed + RATE_INTERVAL < elapsed) {
958 period = elapsed - queue->last_out_elapsed;
960 GST_DEBUG_OBJECT (queue,
961 "rates: period %f, out %" G_GUINT64_FORMAT, period, queue->bytes_out);
963 byte_out_rate = queue->bytes_out / period;
965 if (queue->byte_out_rate == 0.0)
966 queue->byte_out_rate = byte_out_rate;
968 queue->byte_out_rate = AVG_OUT (queue->byte_out_rate, byte_out_rate);
970 /* reset the values to calculate rate over the next interval */
971 queue->last_out_elapsed = elapsed;
972 queue->bytes_out = 0;
974 if (queue->byte_in_rate > 0.0) {
975 queue->cur_level.rate_time =
976 queue->cur_level.bytes / queue->byte_in_rate * GST_SECOND;
978 GST_DEBUG_OBJECT (queue, "rates: out %f, time %" GST_TIME_FORMAT,
979 queue->byte_out_rate, GST_TIME_ARGS (queue->cur_level.rate_time));
983 update_cur_pos (GstQueue2 * queue, GstQueue2Range * range, guint64 pos)
985 guint64 reading_pos, max_reading_pos;
988 max_reading_pos = range->max_reading_pos;
990 max_reading_pos = MAX (max_reading_pos, reading_pos);
992 GST_DEBUG_OBJECT (queue,
993 "updating max_reading_pos from %" G_GUINT64_FORMAT " to %"
994 G_GUINT64_FORMAT, range->max_reading_pos, max_reading_pos);
995 range->max_reading_pos = max_reading_pos;
997 update_cur_level (queue, range);
1001 perform_seek_to_offset (GstQueue2 * queue, guint64 offset)
1006 /* until we receive the FLUSH_STOP from this seek, we skip data */
1007 queue->seeking = TRUE;
1008 GST_QUEUE2_MUTEX_UNLOCK (queue);
1010 GST_DEBUG_OBJECT (queue, "Seeking to %" G_GUINT64_FORMAT, offset);
1013 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1014 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1015 GST_SEEK_TYPE_NONE, -1);
1017 res = gst_pad_push_event (queue->sinkpad, event);
1018 GST_QUEUE2_MUTEX_LOCK (queue);
1021 queue->current = add_range (queue, offset);
1026 /* see if there is enough data in the file to read a full buffer */
1028 gst_queue2_have_data (GstQueue2 * queue, guint64 offset, guint length)
1030 GstQueue2Range *range;
1032 GST_DEBUG_OBJECT (queue, "looking for offset %" G_GUINT64_FORMAT ", len %u",
1035 if ((range = find_range (queue, offset))) {
1036 if (queue->current != range) {
1037 GST_DEBUG_OBJECT (queue, "switching ranges, do seek to range position");
1038 perform_seek_to_offset (queue, range->writing_pos);
1041 GST_INFO_OBJECT (queue, "cur_level.bytes %u (max %" G_GUINT64_FORMAT ")",
1042 queue->cur_level.bytes, QUEUE_MAX_BYTES (queue));
1044 /* we have a range for offset */
1045 GST_DEBUG_OBJECT (queue,
1046 "we have a range %p, offset %" G_GUINT64_FORMAT ", writing_pos %"
1047 G_GUINT64_FORMAT, range, range->offset, range->writing_pos);
1049 if (!QUEUE_IS_USING_RING_BUFFER (queue) && queue->is_eos)
1052 if (offset + length <= range->writing_pos)
1055 GST_DEBUG_OBJECT (queue,
1056 "Need more data (%" G_GUINT64_FORMAT " bytes more)",
1057 (offset + length) - range->writing_pos);
1060 GST_INFO_OBJECT (queue, "not found in any range off %" G_GUINT64_FORMAT
1061 " len %u", offset, length);
1062 /* we don't have the range, see how far away we are */
1063 if (!queue->is_eos && queue->current) {
1064 /* FIXME, find a good threshold based on the incoming rate. */
1065 guint64 threshold = 1024 * 512;
1067 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1070 distance = QUEUE_MAX_BYTES (queue) - queue->cur_level.bytes;
1071 /* don't wait for the complete buffer to fill */
1072 distance = MIN (distance, threshold);
1074 if (offset >= queue->current->offset && offset <=
1075 queue->current->writing_pos + distance) {
1076 GST_INFO_OBJECT (queue,
1077 "requested data is within range, wait for data");
1080 } else if (offset < queue->current->writing_pos + threshold) {
1081 update_cur_pos (queue, queue->current, offset + length);
1082 GST_INFO_OBJECT (queue, "wait for data");
1087 /* too far away, do a seek */
1088 perform_seek_to_offset (queue, offset);
1095 #define FSEEK_FILE(file,offset) (fseeko (file, (off_t) offset, SEEK_SET) != 0)
1096 #elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
1097 #define FSEEK_FILE(file,offset) (lseek (fileno (file), (off_t) offset, SEEK_SET) == (off_t) -1)
1099 #define FSEEK_FILE(file,offset) (fseek (file, offset, SEEK_SET) != 0)
1102 static GstFlowReturn
1103 gst_queue2_read_data_at_offset (GstQueue2 * queue, guint64 offset, guint length,
1104 guint8 * dst, gint64 * read_return)
1106 guint8 *ring_buffer;
1109 ring_buffer = queue->ring_buffer;
1111 if (QUEUE_IS_USING_TEMP_FILE (queue) && FSEEK_FILE (queue->temp_file, offset))
1114 /* this should not block */
1115 GST_LOG_OBJECT (queue, "Reading %d bytes from offset %" G_GUINT64_FORMAT,
1117 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1118 res = fread (dst, 1, length, queue->temp_file);
1120 memcpy (dst, ring_buffer + offset, length);
1124 GST_LOG_OBJECT (queue, "read %" G_GSIZE_FORMAT " bytes", res);
1126 if (G_UNLIKELY (res < length)) {
1127 if (!QUEUE_IS_USING_TEMP_FILE (queue))
1128 goto could_not_read;
1129 /* check for errors or EOF */
1130 if (ferror (queue->temp_file))
1131 goto could_not_read;
1132 if (feof (queue->temp_file) && length > 0)
1142 GST_ELEMENT_ERROR (queue, RESOURCE, SEEK, (NULL), GST_ERROR_SYSTEM);
1143 return GST_FLOW_ERROR;
1147 GST_ELEMENT_ERROR (queue, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
1148 return GST_FLOW_ERROR;
1152 GST_DEBUG ("non-regular file hits EOS");
1153 return GST_FLOW_EOS;
1157 static GstFlowReturn
1158 gst_queue2_create_read (GstQueue2 * queue, guint64 offset, guint length,
1159 GstBuffer ** buffer)
1164 guint64 file_offset;
1165 guint block_length, remaining, read_length;
1169 GstFlowReturn ret = GST_FLOW_OK;
1171 /* allocate the output buffer of the requested size */
1172 if (*buffer == NULL)
1173 buf = gst_buffer_new_allocate (NULL, length, NULL);
1177 gst_buffer_map (buf, &info, GST_MAP_WRITE);
1180 GST_DEBUG_OBJECT (queue, "Reading %u bytes from %" G_GUINT64_FORMAT, length,
1184 rb_size = queue->ring_buffer_max_size;
1185 max_size = QUEUE_MAX_BYTES (queue);
1188 while (remaining > 0) {
1189 /* configure how much/whether to read */
1190 if (!gst_queue2_have_data (queue, rpos, remaining)) {
1193 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1196 /* calculate how far away the offset is */
1197 if (queue->current->writing_pos > rpos)
1198 level = queue->current->writing_pos - rpos;
1202 GST_DEBUG_OBJECT (queue,
1203 "reading %" G_GUINT64_FORMAT ", writing %" G_GUINT64_FORMAT
1204 ", level %" G_GUINT64_FORMAT ", max %" G_GUINT64_FORMAT,
1205 rpos, queue->current->writing_pos, level, max_size);
1207 if (level >= max_size) {
1208 /* we don't have the data but if we have a ring buffer that is full, we
1210 GST_DEBUG_OBJECT (queue,
1211 "ring buffer full, reading QUEUE_MAX_BYTES %"
1212 G_GUINT64_FORMAT " bytes", max_size);
1213 read_length = max_size;
1214 } else if (queue->is_eos) {
1215 /* won't get any more data so read any data we have */
1217 GST_DEBUG_OBJECT (queue,
1218 "EOS hit but read %" G_GUINT64_FORMAT " bytes that we have",
1220 read_length = level;
1228 if (read_length == 0) {
1229 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1230 GST_DEBUG_OBJECT (queue,
1231 "update current position [%" G_GUINT64_FORMAT "-%"
1232 G_GUINT64_FORMAT "]", rpos, queue->current->max_reading_pos);
1233 update_cur_pos (queue, queue->current, rpos);
1234 GST_QUEUE2_SIGNAL_DEL (queue);
1236 GST_DEBUG_OBJECT (queue, "waiting for add");
1237 GST_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
1241 /* we have the requested data so read it */
1242 read_length = remaining;
1245 /* set range reading_pos to actual reading position for this read */
1246 queue->current->reading_pos = rpos;
1248 /* configure how much and from where to read */
1249 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1251 (queue->current->rb_offset + (rpos -
1252 queue->current->offset)) % rb_size;
1253 if (file_offset + read_length > rb_size) {
1254 block_length = rb_size - file_offset;
1256 block_length = read_length;
1260 block_length = read_length;
1263 /* while we still have data to read, we loop */
1264 while (read_length > 0) {
1268 gst_queue2_read_data_at_offset (queue, file_offset, block_length,
1269 data, &read_return);
1270 if (ret != GST_FLOW_OK)
1273 file_offset += read_return;
1274 if (QUEUE_IS_USING_RING_BUFFER (queue))
1275 file_offset %= rb_size;
1277 data += read_return;
1278 read_length -= read_return;
1279 block_length = read_length;
1280 remaining -= read_return;
1282 rpos = (queue->current->reading_pos += read_return);
1283 update_cur_pos (queue, queue->current, queue->current->reading_pos);
1285 GST_QUEUE2_SIGNAL_DEL (queue);
1286 GST_DEBUG_OBJECT (queue, "%u bytes left to read", remaining);
1289 gst_buffer_unmap (buf, &info);
1290 gst_buffer_resize (buf, 0, length);
1292 GST_BUFFER_OFFSET (buf) = offset;
1293 GST_BUFFER_OFFSET_END (buf) = offset + length;
1302 GST_DEBUG_OBJECT (queue, "EOS hit and we don't have any requested data");
1303 gst_buffer_unmap (buf, &info);
1304 if (*buffer == NULL)
1305 gst_buffer_unref (buf);
1306 return GST_FLOW_EOS;
1310 GST_DEBUG_OBJECT (queue, "we are flushing");
1311 gst_buffer_unmap (buf, &info);
1312 if (*buffer == NULL)
1313 gst_buffer_unref (buf);
1314 return GST_FLOW_FLUSHING;
1318 GST_DEBUG_OBJECT (queue, "we have a read error");
1319 gst_buffer_unmap (buf, &info);
1320 if (*buffer == NULL)
1321 gst_buffer_unref (buf);
1326 /* should be called with QUEUE_LOCK */
1327 static GstMiniObject *
1328 gst_queue2_read_item_from_file (GstQueue2 * queue)
1330 GstMiniObject *item;
1332 if (queue->stream_start_event != NULL) {
1333 item = GST_MINI_OBJECT_CAST (queue->stream_start_event);
1334 queue->stream_start_event = NULL;
1335 } else if (queue->starting_segment != NULL) {
1336 item = GST_MINI_OBJECT_CAST (queue->starting_segment);
1337 queue->starting_segment = NULL;
1340 GstBuffer *buffer = NULL;
1341 guint64 reading_pos;
1343 reading_pos = queue->current->reading_pos;
1346 gst_queue2_create_read (queue, reading_pos, DEFAULT_BUFFER_SIZE,
1351 item = GST_MINI_OBJECT_CAST (buffer);
1354 item = GST_MINI_OBJECT_CAST (gst_event_new_eos ());
1364 /* must be called with MUTEX_LOCK. Will briefly release the lock when notifying
1365 * the temp filename. */
1367 gst_queue2_open_temp_location_file (GstQueue2 * queue)
1372 if (queue->temp_file)
1373 goto already_opened;
1375 GST_DEBUG_OBJECT (queue, "opening temp file %s", queue->temp_template);
1377 /* we have two cases:
1378 * - temp_location was set to something !NULL (Deprecated). in this case we
1379 * open the specified filename.
1380 * - temp_template was set, allocate a filename and open that filename
1382 if (!queue->temp_location_set) {
1384 if (queue->temp_template == NULL)
1387 /* make copy of the template, we don't want to change this */
1388 name = g_strdup (queue->temp_template);
1389 fd = g_mkstemp (name);
1391 goto mkstemp_failed;
1393 /* open the file for update/writing */
1394 queue->temp_file = fdopen (fd, "wb+");
1395 /* error creating file */
1396 if (queue->temp_file == NULL)
1399 g_free (queue->temp_location);
1400 queue->temp_location = name;
1402 GST_QUEUE2_MUTEX_UNLOCK (queue);
1404 /* we can't emit the notify with the lock */
1405 g_object_notify (G_OBJECT (queue), "temp-location");
1407 GST_QUEUE2_MUTEX_LOCK (queue);
1409 /* open the file for update/writing, this is deprecated but we still need to
1410 * support it for API/ABI compatibility */
1411 queue->temp_file = g_fopen (queue->temp_location, "wb+");
1412 /* error creating file */
1413 if (queue->temp_file == NULL)
1416 GST_DEBUG_OBJECT (queue, "opened temp file %s", queue->temp_template);
1423 GST_DEBUG_OBJECT (queue, "temp file was already open");
1428 GST_ELEMENT_ERROR (queue, RESOURCE, NOT_FOUND,
1429 (_("No Temp directory specified.")), (NULL));
1434 GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
1435 (_("Could not create temp file \"%s\"."), queue->temp_template),
1442 GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
1443 (_("Could not open file \"%s\" for reading."), name), GST_ERROR_SYSTEM);
1452 gst_queue2_close_temp_location_file (GstQueue2 * queue)
1455 if (queue->temp_file == NULL)
1458 GST_DEBUG_OBJECT (queue, "closing temp file");
1460 fflush (queue->temp_file);
1461 fclose (queue->temp_file);
1463 if (queue->temp_remove)
1464 remove (queue->temp_location);
1466 queue->temp_file = NULL;
1467 clean_ranges (queue);
1471 gst_queue2_flush_temp_file (GstQueue2 * queue)
1473 if (queue->temp_file == NULL)
1476 GST_DEBUG_OBJECT (queue, "flushing temp file");
1478 queue->temp_file = g_freopen (queue->temp_location, "wb+", queue->temp_file);
1482 gst_queue2_locked_flush (GstQueue2 * queue)
1484 if (!QUEUE_IS_USING_QUEUE (queue)) {
1485 if (QUEUE_IS_USING_TEMP_FILE (queue))
1486 gst_queue2_flush_temp_file (queue);
1487 init_ranges (queue);
1489 while (!g_queue_is_empty (&queue->queue)) {
1490 GstMiniObject *data = g_queue_pop_head (&queue->queue);
1492 /* Then lose another reference because we are supposed to destroy that
1493 data when flushing */
1494 gst_mini_object_unref (data);
1497 GST_QUEUE2_CLEAR_LEVEL (queue->cur_level);
1498 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
1499 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
1500 queue->sinktime = queue->srctime = GST_CLOCK_TIME_NONE;
1501 queue->sink_tainted = queue->src_tainted = TRUE;
1502 if (queue->starting_segment != NULL)
1503 gst_event_unref (queue->starting_segment);
1504 queue->starting_segment = NULL;
1505 queue->segment_event_received = FALSE;
1506 gst_event_replace (&queue->stream_start_event, NULL);
1508 /* we deleted a lot of something */
1509 GST_QUEUE2_SIGNAL_DEL (queue);
1513 gst_queue2_wait_free_space (GstQueue2 * queue)
1515 /* We make space available if we're "full" according to whatever
1516 * the user defined as "full". */
1517 if (gst_queue2_is_filled (queue)) {
1520 /* pause the timer while we wait. The fact that we are waiting does not mean
1521 * the byterate on the input pad is lower */
1522 if ((started = queue->in_timer_started))
1523 g_timer_stop (queue->in_timer);
1525 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
1526 "queue is full, waiting for free space");
1528 /* Wait for space to be available, we could be unlocked because of a flush. */
1529 GST_QUEUE2_WAIT_DEL_CHECK (queue, queue->sinkresult, out_flushing);
1531 while (gst_queue2_is_filled (queue));
1533 /* and continue if we were running before */
1535 g_timer_continue (queue->in_timer);
1542 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is flushing");
1548 gst_queue2_create_write (GstQueue2 * queue, GstBuffer * buffer)
1551 guint8 *data, *ring_buffer;
1552 guint size, rb_size;
1553 guint64 writing_pos, new_writing_pos;
1554 GstQueue2Range *range, *prev, *next;
1556 if (QUEUE_IS_USING_RING_BUFFER (queue))
1557 writing_pos = queue->current->rb_writing_pos;
1559 writing_pos = queue->current->writing_pos;
1560 ring_buffer = queue->ring_buffer;
1561 rb_size = queue->ring_buffer_max_size;
1563 gst_buffer_map (buffer, &info, GST_MAP_READ);
1568 GST_DEBUG_OBJECT (queue, "Writing %u bytes to %" G_GUINT64_FORMAT, size,
1574 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1577 /* calculate the space in the ring buffer not used by data from
1578 * the current range */
1579 while (QUEUE_MAX_BYTES (queue) <= queue->cur_level.bytes) {
1580 /* wait until there is some free space */
1581 GST_QUEUE2_WAIT_DEL_CHECK (queue, queue->sinkresult, out_flushing);
1583 /* get the amount of space we have */
1584 space = QUEUE_MAX_BYTES (queue) - queue->cur_level.bytes;
1586 /* calculate if we need to split or if we can write the entire
1588 to_write = MIN (size, space);
1590 /* the writing position in the ring buffer after writing (part
1591 * or all of) the buffer */
1592 new_writing_pos = (writing_pos + to_write) % rb_size;
1595 range = queue->ranges;
1597 /* if we need to overwrite data in the ring buffer, we need to
1600 * warning: this code is complicated and includes some
1601 * simplifications - pen, paper and diagrams for the cases
1604 guint64 range_data_start, range_data_end;
1605 GstQueue2Range *range_to_destroy = NULL;
1607 range_data_start = range->rb_offset;
1608 range_data_end = range->rb_writing_pos;
1610 /* handle the special case where the range has no data in it */
1611 if (range->writing_pos == range->offset) {
1612 if (range != queue->current) {
1613 GST_DEBUG_OBJECT (queue,
1614 "Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
1615 G_GUINT64_FORMAT, range->offset, range->writing_pos);
1617 range_to_destroy = range;
1619 prev->next = range->next;
1624 if (range_data_end > range_data_start) {
1625 if (writing_pos >= range_data_end && new_writing_pos >= writing_pos)
1628 if (new_writing_pos > range_data_start) {
1629 if (new_writing_pos >= range_data_end) {
1630 GST_DEBUG_OBJECT (queue,
1631 "Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
1632 G_GUINT64_FORMAT, range->offset, range->writing_pos);
1634 range_to_destroy = range;
1636 prev->next = range->next;
1638 GST_DEBUG_OBJECT (queue,
1639 "advancing offsets from %" G_GUINT64_FORMAT " (%"
1640 G_GUINT64_FORMAT ") to %" G_GUINT64_FORMAT " (%"
1641 G_GUINT64_FORMAT ")", range->offset, range->rb_offset,
1642 range->offset + new_writing_pos - range_data_start,
1644 range->offset += (new_writing_pos - range_data_start);
1645 range->rb_offset = new_writing_pos;
1649 guint64 new_wpos_virt = writing_pos + to_write;
1651 if (new_wpos_virt <= range_data_start)
1654 if (new_wpos_virt > rb_size && new_writing_pos >= range_data_end) {
1655 GST_DEBUG_OBJECT (queue,
1656 "Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
1657 G_GUINT64_FORMAT, range->offset, range->writing_pos);
1659 range_to_destroy = range;
1661 prev->next = range->next;
1663 GST_DEBUG_OBJECT (queue,
1664 "advancing offsets from %" G_GUINT64_FORMAT " (%"
1665 G_GUINT64_FORMAT ") to %" G_GUINT64_FORMAT " (%"
1666 G_GUINT64_FORMAT ")", range->offset, range->rb_offset,
1667 range->offset + new_writing_pos - range_data_start,
1669 range->offset += (new_wpos_virt - range_data_start);
1670 range->rb_offset = new_writing_pos;
1675 if (!range_to_destroy)
1678 range = range->next;
1679 if (range_to_destroy) {
1680 if (range_to_destroy == queue->ranges)
1681 queue->ranges = range;
1682 g_slice_free (GstQueue2Range, range_to_destroy);
1683 range_to_destroy = NULL;
1688 new_writing_pos = writing_pos + to_write;
1691 if (QUEUE_IS_USING_TEMP_FILE (queue)
1692 && FSEEK_FILE (queue->temp_file, writing_pos))
1695 if (new_writing_pos > writing_pos) {
1696 GST_INFO_OBJECT (queue,
1697 "writing %u bytes to range [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT
1698 "] (rb wpos %" G_GUINT64_FORMAT ")", to_write, queue->current->offset,
1699 queue->current->writing_pos, queue->current->rb_writing_pos);
1700 /* either not using ring buffer or no wrapping, just write */
1701 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1702 if (fwrite (data, to_write, 1, queue->temp_file) != 1)
1705 memcpy (ring_buffer + writing_pos, data, to_write);
1708 if (!QUEUE_IS_USING_RING_BUFFER (queue)) {
1709 /* try to merge with next range */
1710 while ((next = queue->current->next)) {
1711 GST_INFO_OBJECT (queue,
1712 "checking merge with next range %" G_GUINT64_FORMAT " < %"
1713 G_GUINT64_FORMAT, new_writing_pos, next->offset);
1714 if (new_writing_pos < next->offset)
1717 GST_DEBUG_OBJECT (queue, "merging ranges %" G_GUINT64_FORMAT,
1720 /* remove the group, we could choose to not read the data in this range
1721 * again. This would involve us doing a seek to the current writing position
1722 * in the range. FIXME, It would probably make sense to do a seek when there
1723 * is a lot of data in the range we merged with to avoid reading it all
1725 queue->current->next = next->next;
1726 g_slice_free (GstQueue2Range, next);
1728 debug_ranges (queue);
1730 goto update_and_signal;
1734 guint block_one, block_two;
1736 block_one = rb_size - writing_pos;
1737 block_two = to_write - block_one;
1739 if (block_one > 0) {
1740 GST_INFO_OBJECT (queue, "writing %u bytes", block_one);
1741 /* write data to end of ring buffer */
1742 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1743 if (fwrite (data, block_one, 1, queue->temp_file) != 1)
1746 memcpy (ring_buffer + writing_pos, data, block_one);
1750 if (QUEUE_IS_USING_TEMP_FILE (queue) && FSEEK_FILE (queue->temp_file, 0))
1753 if (block_two > 0) {
1754 GST_INFO_OBJECT (queue, "writing %u bytes", block_two);
1755 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1756 if (fwrite (data + block_one, block_two, 1, queue->temp_file) != 1)
1759 memcpy (ring_buffer, data + block_one, block_two);
1765 /* update the writing positions */
1767 GST_INFO_OBJECT (queue,
1768 "wrote %u bytes to %" G_GUINT64_FORMAT " (%u bytes remaining to write)",
1769 to_write, writing_pos, size);
1771 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1773 queue->current->writing_pos += to_write;
1774 queue->current->rb_writing_pos = writing_pos = new_writing_pos;
1776 queue->current->writing_pos = writing_pos = new_writing_pos;
1778 update_cur_level (queue, queue->current);
1780 /* update the buffering status */
1781 if (queue->use_buffering)
1782 update_buffering (queue);
1784 GST_INFO_OBJECT (queue, "cur_level.bytes %u (max %" G_GUINT64_FORMAT ")",
1785 queue->cur_level.bytes, QUEUE_MAX_BYTES (queue));
1787 GST_QUEUE2_SIGNAL_ADD (queue);
1790 gst_buffer_unmap (buffer, &info);
1797 GST_DEBUG_OBJECT (queue, "we are flushing");
1798 gst_buffer_unmap (buffer, &info);
1799 /* FIXME - GST_FLOW_EOS ? */
1804 GST_ELEMENT_ERROR (queue, RESOURCE, SEEK, (NULL), GST_ERROR_SYSTEM);
1805 gst_buffer_unmap (buffer, &info);
1812 GST_ELEMENT_ERROR (queue, RESOURCE, NO_SPACE_LEFT, (NULL), (NULL));
1816 GST_ELEMENT_ERROR (queue, RESOURCE, WRITE,
1817 (_("Error while writing to download file.")),
1818 ("%s", g_strerror (errno)));
1821 gst_buffer_unmap (buffer, &info);
1827 buffer_list_create_write (GstBuffer ** buf, guint idx, gpointer q)
1829 GstQueue2 *queue = q;
1831 GST_TRACE_OBJECT (queue,
1832 "writing buffer %u of size %" G_GSIZE_FORMAT " bytes", idx,
1833 gst_buffer_get_size (*buf));
1835 if (!gst_queue2_create_write (queue, *buf)) {
1836 GST_INFO_OBJECT (queue, "create_write() returned FALSE, bailing out");
1843 buffer_list_calc_size (GstBuffer ** buf, guint idx, gpointer data)
1845 guint *p_size = data;
1848 buf_size = gst_buffer_get_size (*buf);
1849 GST_TRACE ("buffer %u in has size %" G_GSIZE_FORMAT, idx, buf_size);
1850 *p_size += buf_size;
1854 /* enqueue an item an update the level stats */
1856 gst_queue2_locked_enqueue (GstQueue2 * queue, gpointer item,
1857 GstQueue2ItemType item_type)
1859 if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
1863 buffer = GST_BUFFER_CAST (item);
1864 size = gst_buffer_get_size (buffer);
1866 /* add buffer to the statistics */
1867 if (QUEUE_IS_USING_QUEUE (queue)) {
1868 queue->cur_level.buffers++;
1869 queue->cur_level.bytes += size;
1871 queue->bytes_in += size;
1873 /* apply new buffer to segment stats */
1874 apply_buffer (queue, buffer, &queue->sink_segment, TRUE);
1875 /* update the byterate stats */
1876 update_in_rates (queue);
1878 if (!QUEUE_IS_USING_QUEUE (queue)) {
1879 /* FIXME - check return value? */
1880 gst_queue2_create_write (queue, buffer);
1882 } else if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
1883 GstBufferList *buffer_list;
1886 buffer_list = GST_BUFFER_LIST_CAST (item);
1888 gst_buffer_list_foreach (buffer_list, buffer_list_calc_size, &size);
1889 GST_LOG_OBJECT (queue, "total size of buffer list: %u bytes", size);
1891 /* add buffer to the statistics */
1892 if (QUEUE_IS_USING_QUEUE (queue)) {
1893 queue->cur_level.buffers++;
1894 queue->cur_level.bytes += size;
1896 queue->bytes_in += size;
1898 /* apply new buffer to segment stats */
1899 apply_buffer_list (queue, buffer_list, &queue->sink_segment, TRUE);
1901 /* update the byterate stats */
1902 update_in_rates (queue);
1904 if (!QUEUE_IS_USING_QUEUE (queue)) {
1905 gst_buffer_list_foreach (buffer_list, buffer_list_create_write, queue);
1907 } else if (item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
1910 event = GST_EVENT_CAST (item);
1912 switch (GST_EVENT_TYPE (event)) {
1914 /* Zero the thresholds, this makes sure the queue is completely
1915 * filled and we can read all data from the queue. */
1916 GST_DEBUG_OBJECT (queue, "we have EOS");
1917 queue->is_eos = TRUE;
1919 case GST_EVENT_SEGMENT:
1920 apply_segment (queue, event, &queue->sink_segment, TRUE);
1921 /* This is our first new segment, we hold it
1922 * as we can't save it on the temp file */
1923 if (!QUEUE_IS_USING_QUEUE (queue)) {
1924 if (queue->segment_event_received)
1925 goto unexpected_event;
1927 queue->segment_event_received = TRUE;
1928 if (queue->starting_segment != NULL)
1929 gst_event_unref (queue->starting_segment);
1930 queue->starting_segment = event;
1933 /* a new segment allows us to accept more buffers if we got EOS
1934 * from downstream */
1935 queue->unexpected = FALSE;
1937 case GST_EVENT_STREAM_START:
1938 if (!QUEUE_IS_USING_QUEUE (queue)) {
1939 gst_event_replace (&queue->stream_start_event, event);
1940 gst_event_unref (event);
1945 if (!QUEUE_IS_USING_QUEUE (queue))
1946 goto unexpected_event;
1950 g_warning ("Unexpected item %p added in queue %s (refcounting problem?)",
1951 item, GST_OBJECT_NAME (queue));
1952 /* we can't really unref since we don't know what it is */
1957 /* update the buffering status */
1958 if (queue->use_buffering)
1959 update_buffering (queue);
1961 if (QUEUE_IS_USING_QUEUE (queue)) {
1962 g_queue_push_tail (&queue->queue, item);
1964 gst_mini_object_unref (GST_MINI_OBJECT_CAST (item));
1967 GST_QUEUE2_SIGNAL_ADD (queue);
1976 ("Unexpected event of kind %s can't be added in temp file of queue %s ",
1977 gst_event_type_get_name (GST_EVENT_TYPE (item)),
1978 GST_OBJECT_NAME (queue));
1979 gst_event_unref (GST_EVENT_CAST (item));
1984 /* dequeue an item from the queue and update level stats */
1985 static GstMiniObject *
1986 gst_queue2_locked_dequeue (GstQueue2 * queue, GstQueue2ItemType * item_type)
1988 GstMiniObject *item;
1990 if (!QUEUE_IS_USING_QUEUE (queue))
1991 item = gst_queue2_read_item_from_file (queue);
1993 item = g_queue_pop_head (&queue->queue);
1998 if (GST_IS_BUFFER (item)) {
2002 buffer = GST_BUFFER_CAST (item);
2003 size = gst_buffer_get_size (buffer);
2004 *item_type = GST_QUEUE2_ITEM_TYPE_BUFFER;
2006 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2007 "retrieved buffer %p from queue", buffer);
2009 if (QUEUE_IS_USING_QUEUE (queue)) {
2010 queue->cur_level.buffers--;
2011 queue->cur_level.bytes -= size;
2013 queue->bytes_out += size;
2015 apply_buffer (queue, buffer, &queue->src_segment, FALSE);
2016 /* update the byterate stats */
2017 update_out_rates (queue);
2018 /* update the buffering */
2019 if (queue->use_buffering)
2020 update_buffering (queue);
2022 } else if (GST_IS_EVENT (item)) {
2023 GstEvent *event = GST_EVENT_CAST (item);
2025 *item_type = GST_QUEUE2_ITEM_TYPE_EVENT;
2027 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2028 "retrieved event %p from queue", event);
2030 switch (GST_EVENT_TYPE (event)) {
2032 /* queue is empty now that we dequeued the EOS */
2033 GST_QUEUE2_CLEAR_LEVEL (queue->cur_level);
2035 case GST_EVENT_SEGMENT:
2036 apply_segment (queue, event, &queue->src_segment, FALSE);
2041 } else if (GST_IS_BUFFER_LIST (item)) {
2042 GstBufferList *buffer_list;
2045 buffer_list = GST_BUFFER_LIST_CAST (item);
2046 gst_buffer_list_foreach (buffer_list, buffer_list_calc_size, &size);
2047 *item_type = GST_QUEUE2_ITEM_TYPE_BUFFER_LIST;
2049 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2050 "retrieved buffer list %p from queue", buffer_list);
2052 if (QUEUE_IS_USING_QUEUE (queue)) {
2053 queue->cur_level.buffers--;
2054 queue->cur_level.bytes -= size;
2056 queue->bytes_out += size;
2058 apply_buffer_list (queue, buffer_list, &queue->src_segment, FALSE);
2059 /* update the byterate stats */
2060 update_out_rates (queue);
2061 /* update the buffering */
2062 if (queue->use_buffering)
2063 update_buffering (queue);
2067 ("Unexpected item %p dequeued from queue %s (refcounting problem?)",
2068 item, GST_OBJECT_NAME (queue));
2070 *item_type = GST_QUEUE2_ITEM_TYPE_UNKNOWN;
2072 GST_QUEUE2_SIGNAL_DEL (queue);
2079 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "the queue is empty");
2085 gst_queue2_handle_sink_event (GstPad * pad, GstObject * parent,
2090 queue = GST_QUEUE2 (parent);
2092 switch (GST_EVENT_TYPE (event)) {
2093 case GST_EVENT_FLUSH_START:
2095 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush start event");
2096 if (GST_PAD_MODE (queue->srcpad) == GST_PAD_MODE_PUSH) {
2098 gst_pad_push_event (queue->srcpad, event);
2100 /* now unblock the chain function */
2101 GST_QUEUE2_MUTEX_LOCK (queue);
2102 queue->srcresult = GST_FLOW_FLUSHING;
2103 queue->sinkresult = GST_FLOW_FLUSHING;
2104 /* unblock the loop and chain functions */
2105 GST_QUEUE2_SIGNAL_ADD (queue);
2106 GST_QUEUE2_SIGNAL_DEL (queue);
2107 GST_QUEUE2_MUTEX_UNLOCK (queue);
2109 /* make sure it pauses, this should happen since we sent
2110 * flush_start downstream. */
2111 gst_pad_pause_task (queue->srcpad);
2112 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "loop stopped");
2114 GST_QUEUE2_MUTEX_LOCK (queue);
2115 /* flush the sink pad */
2116 queue->sinkresult = GST_FLOW_FLUSHING;
2117 GST_QUEUE2_SIGNAL_DEL (queue);
2118 GST_QUEUE2_MUTEX_UNLOCK (queue);
2120 gst_event_unref (event);
2124 case GST_EVENT_FLUSH_STOP:
2126 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush stop event");
2128 if (GST_PAD_MODE (queue->srcpad) == GST_PAD_MODE_PUSH) {
2130 gst_pad_push_event (queue->srcpad, event);
2132 GST_QUEUE2_MUTEX_LOCK (queue);
2133 gst_queue2_locked_flush (queue);
2134 queue->srcresult = GST_FLOW_OK;
2135 queue->sinkresult = GST_FLOW_OK;
2136 queue->is_eos = FALSE;
2137 queue->unexpected = FALSE;
2138 queue->seeking = FALSE;
2139 /* reset rate counters */
2140 reset_rate_timer (queue);
2141 gst_pad_start_task (queue->srcpad, (GstTaskFunction) gst_queue2_loop,
2143 GST_QUEUE2_MUTEX_UNLOCK (queue);
2145 GST_QUEUE2_MUTEX_LOCK (queue);
2146 queue->segment_event_received = FALSE;
2147 queue->is_eos = FALSE;
2148 queue->unexpected = FALSE;
2149 queue->sinkresult = GST_FLOW_OK;
2150 queue->seeking = FALSE;
2151 GST_QUEUE2_MUTEX_UNLOCK (queue);
2153 gst_event_unref (event);
2158 if (GST_EVENT_IS_SERIALIZED (event)) {
2159 /* serialized events go in the queue */
2160 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->sinkresult, out_flushing);
2161 /* refuse more events on EOS */
2164 gst_queue2_locked_enqueue (queue, event, GST_QUEUE2_ITEM_TYPE_EVENT);
2165 GST_QUEUE2_MUTEX_UNLOCK (queue);
2167 /* non-serialized events are passed upstream. */
2168 gst_pad_push_event (queue->srcpad, event);
2178 GST_DEBUG_OBJECT (queue, "refusing event, we are flushing");
2179 GST_QUEUE2_MUTEX_UNLOCK (queue);
2180 gst_event_unref (event);
2185 GST_DEBUG_OBJECT (queue, "refusing event, we are EOS");
2186 GST_QUEUE2_MUTEX_UNLOCK (queue);
2187 gst_event_unref (event);
2193 gst_queue2_handle_sink_query (GstPad * pad, GstObject * parent,
2198 switch (GST_QUERY_TYPE (query)) {
2200 if (GST_QUERY_IS_SERIALIZED (query)) {
2201 GST_WARNING_OBJECT (pad, "unhandled serialized query");
2204 res = gst_pad_query_default (pad, parent, query);
2212 gst_queue2_is_empty (GstQueue2 * queue)
2214 /* never empty on EOS */
2218 if (!QUEUE_IS_USING_QUEUE (queue) && queue->current) {
2219 return queue->current->writing_pos <= queue->current->max_reading_pos;
2221 if (queue->queue.length == 0)
2229 gst_queue2_is_filled (GstQueue2 * queue)
2233 /* always filled on EOS */
2237 #define CHECK_FILLED(format,alt_max) ((queue->max_level.format) > 0 && \
2238 (queue->cur_level.format) >= ((alt_max) ? \
2239 MIN ((queue->max_level.format), (alt_max)) : (queue->max_level.format)))
2241 /* if using a ring buffer we're filled if all ring buffer space is used
2242 * _by the current range_ */
2243 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
2244 guint64 rb_size = queue->ring_buffer_max_size;
2245 GST_DEBUG_OBJECT (queue,
2246 "max bytes %u, rb size %" G_GUINT64_FORMAT ", cur bytes %u",
2247 queue->max_level.bytes, rb_size, queue->cur_level.bytes);
2248 return CHECK_FILLED (bytes, rb_size);
2251 /* if using file, we're never filled if we don't have EOS */
2252 if (QUEUE_IS_USING_TEMP_FILE (queue))
2255 /* we are never filled when we have no buffers at all */
2256 if (queue->cur_level.buffers == 0)
2259 /* we are filled if one of the current levels exceeds the max */
2260 res = CHECK_FILLED (buffers, 0) || CHECK_FILLED (bytes, 0)
2261 || CHECK_FILLED (time, 0);
2263 /* if we need to, use the rate estimate to check against the max time we are
2264 * allowed to queue */
2265 if (queue->use_rate_estimate)
2266 res |= CHECK_FILLED (rate_time, 0);
2272 static GstFlowReturn
2273 gst_queue2_chain_buffer_or_buffer_list (GstQueue2 * queue,
2274 GstMiniObject * item, GstQueue2ItemType item_type)
2276 /* we have to lock the queue since we span threads */
2277 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->sinkresult, out_flushing);
2278 /* when we received EOS, we refuse more data */
2281 /* when we received unexpected from downstream, refuse more buffers */
2282 if (queue->unexpected)
2283 goto out_unexpected;
2285 /* while we didn't receive the newsegment, we're seeking and we skip data */
2289 if (!gst_queue2_wait_free_space (queue))
2292 /* put buffer in queue now */
2293 gst_queue2_locked_enqueue (queue, item, item_type);
2294 GST_QUEUE2_MUTEX_UNLOCK (queue);
2298 /* special conditions */
2301 GstFlowReturn ret = queue->sinkresult;
2303 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2304 "exit because task paused, reason: %s", gst_flow_get_name (ret));
2305 GST_QUEUE2_MUTEX_UNLOCK (queue);
2306 gst_mini_object_unref (item);
2312 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
2313 GST_QUEUE2_MUTEX_UNLOCK (queue);
2314 gst_mini_object_unref (item);
2316 return GST_FLOW_EOS;
2320 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are seeking");
2321 GST_QUEUE2_MUTEX_UNLOCK (queue);
2322 gst_mini_object_unref (item);
2328 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
2329 GST_QUEUE2_MUTEX_UNLOCK (queue);
2330 gst_mini_object_unref (item);
2332 return GST_FLOW_EOS;
2336 static GstFlowReturn
2337 gst_queue2_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
2341 queue = GST_QUEUE2 (parent);
2343 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received buffer %p of "
2344 "size %" G_GSIZE_FORMAT ", time %" GST_TIME_FORMAT ", duration %"
2345 GST_TIME_FORMAT, buffer, gst_buffer_get_size (buffer),
2346 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
2347 GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
2349 return gst_queue2_chain_buffer_or_buffer_list (queue,
2350 GST_MINI_OBJECT_CAST (buffer), GST_QUEUE2_ITEM_TYPE_BUFFER);
2353 static GstFlowReturn
2354 gst_queue2_chain_list (GstPad * pad, GstObject * parent,
2355 GstBufferList * buffer_list)
2359 queue = GST_QUEUE2 (parent);
2361 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2362 "received buffer list %p", buffer_list);
2364 return gst_queue2_chain_buffer_or_buffer_list (queue,
2365 GST_MINI_OBJECT_CAST (buffer_list), GST_QUEUE2_ITEM_TYPE_BUFFER_LIST);
2368 static GstMiniObject *
2369 gst_queue2_dequeue_on_eos (GstQueue2 * queue, GstQueue2ItemType * item_type)
2371 GstMiniObject *data;
2373 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from downstream");
2375 /* stop pushing buffers, we dequeue all items until we see an item that we
2376 * can push again, which is EOS or SEGMENT. If there is nothing in the
2377 * queue we can push, we set a flag to make the sinkpad refuse more
2378 * buffers with an EOS return value until we receive something
2379 * pushable again or we get flushed. */
2380 while ((data = gst_queue2_locked_dequeue (queue, item_type))) {
2381 if (*item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
2382 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2383 "dropping EOS buffer %p", data);
2384 gst_buffer_unref (GST_BUFFER_CAST (data));
2385 } else if (*item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
2386 GstEvent *event = GST_EVENT_CAST (data);
2387 GstEventType type = GST_EVENT_TYPE (event);
2389 if (type == GST_EVENT_EOS || type == GST_EVENT_SEGMENT) {
2390 /* we found a pushable item in the queue, push it out */
2391 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2392 "pushing pushable event %s after EOS", GST_EVENT_TYPE_NAME (event));
2395 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2396 "dropping EOS event %p", event);
2397 gst_event_unref (event);
2398 } else if (*item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
2399 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2400 "dropping EOS buffer list %p", data);
2401 gst_buffer_list_unref (GST_BUFFER_LIST_CAST (data));
2404 /* no more items in the queue. Set the unexpected flag so that upstream
2405 * make us refuse any more buffers on the sinkpad. Since we will still
2406 * accept EOS and SEGMENT we return _FLOW_OK to the caller so that the
2407 * task function does not shut down. */
2408 queue->unexpected = TRUE;
2412 /* dequeue an item from the queue an push it downstream. This functions returns
2413 * the result of the push. */
2414 static GstFlowReturn
2415 gst_queue2_push_one (GstQueue2 * queue)
2417 GstFlowReturn result = GST_FLOW_OK;
2418 GstMiniObject *data;
2419 GstQueue2ItemType item_type;
2421 data = gst_queue2_locked_dequeue (queue, &item_type);
2426 GST_QUEUE2_MUTEX_UNLOCK (queue);
2428 if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
2434 buffer = GST_BUFFER_CAST (data);
2436 caps = GST_BUFFER_CAPS (buffer);
2440 /* set caps before pushing the buffer so that core does not try to do
2441 * something fancy to check if this is possible. */
2442 if (caps && caps != GST_PAD_CAPS (queue->srcpad))
2443 gst_pad_set_caps (queue->srcpad, caps);
2446 result = gst_pad_push (queue->srcpad, buffer);
2448 /* need to check for srcresult here as well */
2449 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2450 if (result == GST_FLOW_EOS) {
2451 data = gst_queue2_dequeue_on_eos (queue, &item_type);
2454 /* Since we will still accept EOS and SEGMENT we return _FLOW_OK
2455 * to the caller so that the task function does not shut down */
2456 result = GST_FLOW_OK;
2458 } else if (item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
2459 GstEvent *event = GST_EVENT_CAST (data);
2460 GstEventType type = GST_EVENT_TYPE (event);
2462 gst_pad_push_event (queue->srcpad, event);
2464 /* if we're EOS, return EOS so that the task pauses. */
2465 if (type == GST_EVENT_EOS) {
2466 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2467 "pushed EOS event %p, return EOS", event);
2468 result = GST_FLOW_EOS;
2471 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2472 } else if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
2473 GstBufferList *buffer_list;
2475 GstBuffer *first_buf;
2479 buffer_list = GST_BUFFER_LIST_CAST (data);
2482 first_buf = gst_buffer_list_get (buffer_list, 0);
2483 caps = (first_buf != NULL) ? GST_BUFFER_CAPS (first_buf) : NULL;
2485 /* set caps before pushing the buffer so that core does not try to do
2486 * something fancy to check if this is possible. */
2487 if (caps && caps != GST_PAD_CAPS (queue->srcpad))
2488 gst_pad_set_caps (queue->srcpad, caps);
2491 result = gst_pad_push_list (queue->srcpad, buffer_list);
2493 /* need to check for srcresult here as well */
2494 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2495 if (result == GST_FLOW_EOS) {
2496 data = gst_queue2_dequeue_on_eos (queue, &item_type);
2499 /* Since we will still accept EOS and SEGMENT we return _FLOW_OK
2500 * to the caller so that the task function does not shut down */
2501 result = GST_FLOW_OK;
2509 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2510 "exit because we have no item in the queue");
2511 return GST_FLOW_ERROR;
2515 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are flushing");
2516 return GST_FLOW_FLUSHING;
2520 /* called repeatedly with @pad as the source pad. This function should push out
2521 * data to the peer element. */
2523 gst_queue2_loop (GstPad * pad)
2528 queue = GST_QUEUE2 (GST_PAD_PARENT (pad));
2530 /* have to lock for thread-safety */
2531 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2533 if (gst_queue2_is_empty (queue)) {
2536 /* pause the timer while we wait. The fact that we are waiting does not mean
2537 * the byterate on the output pad is lower */
2538 if ((started = queue->out_timer_started))
2539 g_timer_stop (queue->out_timer);
2541 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
2542 "queue is empty, waiting for new data");
2544 /* Wait for data to be available, we could be unlocked because of a flush. */
2545 GST_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
2547 while (gst_queue2_is_empty (queue));
2549 /* and continue if we were running before */
2551 g_timer_continue (queue->out_timer);
2553 ret = gst_queue2_push_one (queue);
2554 queue->srcresult = ret;
2555 queue->sinkresult = ret;
2556 if (ret != GST_FLOW_OK)
2559 GST_QUEUE2_MUTEX_UNLOCK (queue);
2566 gboolean eos = queue->is_eos;
2567 GstFlowReturn ret = queue->srcresult;
2569 gst_pad_pause_task (queue->srcpad);
2570 GST_QUEUE2_MUTEX_UNLOCK (queue);
2571 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2572 "pause task, reason: %s", gst_flow_get_name (queue->srcresult));
2573 /* let app know about us giving up if upstream is not expected to do so */
2574 /* EOS is already taken care of elsewhere */
2575 if (eos && (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS)) {
2576 GST_ELEMENT_ERROR (queue, STREAM, FAILED,
2577 (_("Internal data flow error.")),
2578 ("streaming task paused, reason %s (%d)",
2579 gst_flow_get_name (ret), ret));
2580 gst_pad_push_event (queue->srcpad, gst_event_new_eos ());
2587 gst_queue2_handle_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
2589 gboolean res = TRUE;
2590 GstQueue2 *queue = GST_QUEUE2 (parent);
2592 #ifndef GST_DISABLE_GST_DEBUG
2593 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%s)",
2594 event, GST_EVENT_TYPE_NAME (event));
2597 switch (GST_EVENT_TYPE (event)) {
2598 case GST_EVENT_FLUSH_START:
2599 if (QUEUE_IS_USING_QUEUE (queue)) {
2600 /* just forward upstream */
2601 res = gst_pad_push_event (queue->sinkpad, event);
2603 /* now unblock the getrange function */
2604 GST_QUEUE2_MUTEX_LOCK (queue);
2605 GST_DEBUG_OBJECT (queue, "flushing");
2606 queue->srcresult = GST_FLOW_FLUSHING;
2607 GST_QUEUE2_SIGNAL_ADD (queue);
2608 GST_QUEUE2_MUTEX_UNLOCK (queue);
2610 /* when using a temp file, we eat the event */
2612 gst_event_unref (event);
2615 case GST_EVENT_FLUSH_STOP:
2616 if (QUEUE_IS_USING_QUEUE (queue)) {
2617 /* just forward upstream */
2618 res = gst_pad_push_event (queue->sinkpad, event);
2620 /* now unblock the getrange function */
2621 GST_QUEUE2_MUTEX_LOCK (queue);
2622 queue->srcresult = GST_FLOW_OK;
2623 GST_QUEUE2_MUTEX_UNLOCK (queue);
2625 /* when using a temp file, we eat the event */
2627 gst_event_unref (event);
2631 res = gst_pad_push_event (queue->sinkpad, event);
2639 gst_queue2_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
2643 queue = GST_QUEUE2 (parent);
2645 switch (GST_QUERY_TYPE (query)) {
2646 case GST_QUERY_POSITION:
2651 if (!gst_pad_peer_query (queue->sinkpad, query))
2654 /* get peer position */
2655 gst_query_parse_position (query, &format, &peer_pos);
2657 /* FIXME: this code assumes that there's no discont in the queue */
2659 case GST_FORMAT_BYTES:
2660 peer_pos -= queue->cur_level.bytes;
2662 case GST_FORMAT_TIME:
2663 peer_pos -= queue->cur_level.time;
2666 GST_WARNING_OBJECT (queue, "dropping query in %s format, don't "
2667 "know how to adjust value", gst_format_get_name (format));
2670 /* set updated position */
2671 gst_query_set_position (query, format, peer_pos);
2674 case GST_QUERY_DURATION:
2676 GST_DEBUG_OBJECT (queue, "doing peer query");
2678 if (!gst_pad_peer_query (queue->sinkpad, query))
2681 GST_DEBUG_OBJECT (queue, "peer query success");
2684 case GST_QUERY_BUFFERING:
2688 GST_DEBUG_OBJECT (queue, "query buffering");
2690 /* FIXME - is this condition correct? what should ring buffer do? */
2691 if (QUEUE_IS_USING_QUEUE (queue)) {
2692 /* no temp file, just forward to the peer */
2693 if (!gst_pad_peer_query (queue->sinkpad, query))
2695 GST_DEBUG_OBJECT (queue, "buffering forwarded to peer");
2697 gint64 start, stop, range_start, range_stop;
2698 guint64 writing_pos;
2700 gint64 estimated_total, buffering_left;
2702 gboolean peer_res, is_buffering, is_eos;
2703 gdouble byte_in_rate, byte_out_rate;
2704 GstQueue2Range *queued_ranges;
2706 /* we need a current download region */
2707 if (queue->current == NULL)
2710 writing_pos = queue->current->writing_pos;
2711 byte_in_rate = queue->byte_in_rate;
2712 byte_out_rate = queue->byte_out_rate;
2713 is_buffering = queue->is_buffering;
2714 is_eos = queue->is_eos;
2715 percent = queue->buffering_percent;
2718 /* we're EOS, we know the duration in bytes now */
2720 duration = writing_pos;
2722 /* get duration of upstream in bytes */
2723 peer_res = gst_pad_peer_query_duration (queue->sinkpad,
2724 GST_FORMAT_BYTES, &duration);
2727 /* calculate remaining and total download time */
2728 if (peer_res && byte_in_rate > 0.0) {
2729 estimated_total = (duration * 1000) / byte_in_rate;
2730 buffering_left = ((duration - writing_pos) * 1000) / byte_in_rate;
2732 estimated_total = -1;
2733 buffering_left = -1;
2735 GST_DEBUG_OBJECT (queue, "estimated %" G_GINT64_FORMAT ", left %"
2736 G_GINT64_FORMAT, estimated_total, buffering_left);
2738 gst_query_parse_buffering_range (query, &format, NULL, NULL, NULL);
2741 case GST_FORMAT_PERCENT:
2742 /* we need duration */
2746 GST_DEBUG_OBJECT (queue,
2747 "duration %" G_GINT64_FORMAT ", writing %" G_GINT64_FORMAT,
2748 duration, writing_pos);
2751 /* get our available data relative to the duration */
2753 stop = GST_FORMAT_PERCENT_MAX * writing_pos / duration;
2757 case GST_FORMAT_BYTES:
2767 /* fill out the buffered ranges */
2768 for (queued_ranges = queue->ranges; queued_ranges;
2769 queued_ranges = queued_ranges->next) {
2771 case GST_FORMAT_PERCENT:
2772 if (duration == -1) {
2777 range_start = 100 * queued_ranges->offset / duration;
2778 range_stop = 100 * queued_ranges->writing_pos / duration;
2780 case GST_FORMAT_BYTES:
2781 range_start = queued_ranges->offset;
2782 range_stop = queued_ranges->writing_pos;
2789 if (range_start == range_stop)
2791 GST_DEBUG_OBJECT (queue,
2792 "range starting at %" G_GINT64_FORMAT " and finishing at %"
2793 G_GINT64_FORMAT, range_start, range_stop);
2794 gst_query_add_buffering_range (query, range_start, range_stop);
2797 gst_query_set_buffering_percent (query, is_buffering, percent);
2798 gst_query_set_buffering_range (query, format, start, stop,
2800 gst_query_set_buffering_stats (query, GST_BUFFERING_DOWNLOAD,
2801 byte_in_rate, byte_out_rate, buffering_left);
2805 case GST_QUERY_SCHEDULING:
2808 GstSchedulingFlags flags = 0;
2810 /* we can operate in pull mode when we are using a tempfile */
2811 pull_mode = !QUEUE_IS_USING_QUEUE (queue);
2814 flags |= GST_SCHEDULING_FLAG_SEEKABLE;
2815 gst_query_set_scheduling (query, flags, 0, -1, 0);
2817 gst_query_add_scheduling_mode (query, GST_PAD_MODE_PULL);
2818 gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
2822 /* peer handled other queries */
2823 if (!gst_pad_query_default (pad, parent, query))
2833 GST_DEBUG_OBJECT (queue, "failed peer query");
2839 gst_queue2_handle_query (GstElement * element, GstQuery * query)
2841 GstQueue2 *queue = GST_QUEUE2 (element);
2843 /* simply forward to the srcpad query function */
2844 return gst_queue2_handle_src_query (queue->srcpad, GST_OBJECT_CAST (element),
2849 gst_queue2_update_upstream_size (GstQueue2 * queue)
2851 gint64 upstream_size = -1;
2853 if (gst_pad_peer_query_duration (queue->sinkpad, GST_FORMAT_BYTES,
2855 GST_INFO_OBJECT (queue, "upstream size: %" G_GINT64_FORMAT, upstream_size);
2856 queue->upstream_size = upstream_size;
2860 static GstFlowReturn
2861 gst_queue2_get_range (GstPad * pad, GstObject * parent, guint64 offset,
2862 guint length, GstBuffer ** buffer)
2867 queue = GST_QUEUE2_CAST (parent);
2869 length = (length == -1) ? DEFAULT_BUFFER_SIZE : length;
2870 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2871 offset = (offset == -1) ? queue->current->reading_pos : offset;
2873 GST_DEBUG_OBJECT (queue,
2874 "Getting range: offset %" G_GUINT64_FORMAT ", length %u", offset, length);
2876 /* catch any reads beyond the size of the file here to make sure queue2
2877 * doesn't send seek events beyond the size of the file upstream, since
2878 * that would confuse elements such as souphttpsrc and/or http servers.
2879 * Demuxers often just loop until EOS at the end of the file to figure out
2880 * when they've read all the end-headers or index chunks. */
2881 if (G_UNLIKELY (offset >= queue->upstream_size)) {
2882 gst_queue2_update_upstream_size (queue);
2883 if (queue->upstream_size > 0 && offset >= queue->upstream_size)
2884 goto out_unexpected;
2887 if (G_UNLIKELY (offset + length > queue->upstream_size)) {
2888 gst_queue2_update_upstream_size (queue);
2889 if (queue->upstream_size > 0 && offset + length >= queue->upstream_size) {
2890 length = queue->upstream_size - offset;
2891 GST_DEBUG_OBJECT (queue, "adjusting length downto %d", length);
2895 /* FIXME - function will block when the range is not yet available */
2896 ret = gst_queue2_create_read (queue, offset, length, buffer);
2897 GST_QUEUE2_MUTEX_UNLOCK (queue);
2904 ret = queue->srcresult;
2906 GST_DEBUG_OBJECT (queue, "we are flushing");
2907 GST_QUEUE2_MUTEX_UNLOCK (queue);
2912 GST_DEBUG_OBJECT (queue, "read beyond end of file");
2913 GST_QUEUE2_MUTEX_UNLOCK (queue);
2914 return GST_FLOW_EOS;
2918 /* sink currently only operates in push mode */
2920 gst_queue2_sink_activate_mode (GstPad * pad, GstObject * parent,
2921 GstPadMode mode, gboolean active)
2926 queue = GST_QUEUE2 (parent);
2929 case GST_PAD_MODE_PUSH:
2931 GST_QUEUE2_MUTEX_LOCK (queue);
2932 GST_DEBUG_OBJECT (queue, "activating push mode");
2933 queue->srcresult = GST_FLOW_OK;
2934 queue->sinkresult = GST_FLOW_OK;
2935 queue->is_eos = FALSE;
2936 queue->unexpected = FALSE;
2937 reset_rate_timer (queue);
2938 GST_QUEUE2_MUTEX_UNLOCK (queue);
2940 /* unblock chain function */
2941 GST_QUEUE2_MUTEX_LOCK (queue);
2942 GST_DEBUG_OBJECT (queue, "deactivating push mode");
2943 queue->srcresult = GST_FLOW_FLUSHING;
2944 queue->sinkresult = GST_FLOW_FLUSHING;
2945 gst_queue2_locked_flush (queue);
2946 GST_QUEUE2_MUTEX_UNLOCK (queue);
2957 /* src operating in push mode, we start a task on the source pad that pushes out
2958 * buffers from the queue */
2960 gst_queue2_src_activate_push (GstPad * pad, GstObject * parent, gboolean active)
2962 gboolean result = FALSE;
2965 queue = GST_QUEUE2 (parent);
2968 GST_QUEUE2_MUTEX_LOCK (queue);
2969 GST_DEBUG_OBJECT (queue, "activating push mode");
2970 queue->srcresult = GST_FLOW_OK;
2971 queue->sinkresult = GST_FLOW_OK;
2972 queue->is_eos = FALSE;
2973 queue->unexpected = FALSE;
2974 result = gst_pad_start_task (pad, (GstTaskFunction) gst_queue2_loop, pad);
2975 GST_QUEUE2_MUTEX_UNLOCK (queue);
2977 /* unblock loop function */
2978 GST_QUEUE2_MUTEX_LOCK (queue);
2979 GST_DEBUG_OBJECT (queue, "deactivating push mode");
2980 queue->srcresult = GST_FLOW_FLUSHING;
2981 queue->sinkresult = GST_FLOW_FLUSHING;
2982 /* the item add signal will unblock */
2983 GST_QUEUE2_SIGNAL_ADD (queue);
2984 GST_QUEUE2_MUTEX_UNLOCK (queue);
2986 /* step 2, make sure streaming finishes */
2987 result = gst_pad_stop_task (pad);
2993 /* pull mode, downstream will call our getrange function */
2995 gst_queue2_src_activate_pull (GstPad * pad, GstObject * parent, gboolean active)
3000 queue = GST_QUEUE2 (parent);
3003 GST_QUEUE2_MUTEX_LOCK (queue);
3004 if (!QUEUE_IS_USING_QUEUE (queue)) {
3005 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
3006 /* open the temp file now */
3007 result = gst_queue2_open_temp_location_file (queue);
3008 } else if (!queue->ring_buffer) {
3009 queue->ring_buffer = g_malloc (queue->ring_buffer_max_size);
3010 result = ! !queue->ring_buffer;
3015 GST_DEBUG_OBJECT (queue, "activating pull mode");
3016 init_ranges (queue);
3017 queue->srcresult = GST_FLOW_OK;
3018 queue->sinkresult = GST_FLOW_OK;
3019 queue->is_eos = FALSE;
3020 queue->unexpected = FALSE;
3021 queue->upstream_size = 0;
3023 GST_DEBUG_OBJECT (queue, "no temp file, cannot activate pull mode");
3024 /* this is not allowed, we cannot operate in pull mode without a temp
3026 queue->srcresult = GST_FLOW_FLUSHING;
3027 queue->sinkresult = GST_FLOW_FLUSHING;
3030 GST_QUEUE2_MUTEX_UNLOCK (queue);
3032 GST_QUEUE2_MUTEX_LOCK (queue);
3033 GST_DEBUG_OBJECT (queue, "deactivating pull mode");
3034 queue->srcresult = GST_FLOW_FLUSHING;
3035 queue->sinkresult = GST_FLOW_FLUSHING;
3036 /* this will unlock getrange */
3037 GST_QUEUE2_SIGNAL_ADD (queue);
3039 GST_QUEUE2_MUTEX_UNLOCK (queue);
3046 gst_queue2_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
3052 case GST_PAD_MODE_PULL:
3053 res = gst_queue2_src_activate_pull (pad, parent, active);
3055 case GST_PAD_MODE_PUSH:
3056 res = gst_queue2_src_activate_push (pad, parent, active);
3059 GST_LOG_OBJECT (pad, "unknown activation mode %d", mode);
3066 static GstStateChangeReturn
3067 gst_queue2_change_state (GstElement * element, GstStateChange transition)
3070 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
3072 queue = GST_QUEUE2 (element);
3074 switch (transition) {
3075 case GST_STATE_CHANGE_NULL_TO_READY:
3077 case GST_STATE_CHANGE_READY_TO_PAUSED:
3078 GST_QUEUE2_MUTEX_LOCK (queue);
3079 if (!QUEUE_IS_USING_QUEUE (queue)) {
3080 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
3081 if (!gst_queue2_open_temp_location_file (queue))
3082 ret = GST_STATE_CHANGE_FAILURE;
3084 if (queue->ring_buffer) {
3085 g_free (queue->ring_buffer);
3086 queue->ring_buffer = NULL;
3088 if (!(queue->ring_buffer = g_malloc (queue->ring_buffer_max_size)))
3089 ret = GST_STATE_CHANGE_FAILURE;
3091 init_ranges (queue);
3093 queue->segment_event_received = FALSE;
3094 queue->starting_segment = NULL;
3095 gst_event_replace (&queue->stream_start_event, NULL);
3096 GST_QUEUE2_MUTEX_UNLOCK (queue);
3098 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
3104 if (ret == GST_STATE_CHANGE_FAILURE)
3107 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
3109 if (ret == GST_STATE_CHANGE_FAILURE)
3112 switch (transition) {
3113 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
3115 case GST_STATE_CHANGE_PAUSED_TO_READY:
3116 GST_QUEUE2_MUTEX_LOCK (queue);
3117 if (!QUEUE_IS_USING_QUEUE (queue)) {
3118 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
3119 gst_queue2_close_temp_location_file (queue);
3120 } else if (queue->ring_buffer) {
3121 g_free (queue->ring_buffer);
3122 queue->ring_buffer = NULL;
3124 clean_ranges (queue);
3126 if (queue->starting_segment != NULL) {
3127 gst_event_unref (queue->starting_segment);
3128 queue->starting_segment = NULL;
3130 gst_event_replace (&queue->stream_start_event, NULL);
3131 GST_QUEUE2_MUTEX_UNLOCK (queue);
3133 case GST_STATE_CHANGE_READY_TO_NULL:
3142 /* changing the capacity of the queue must wake up
3143 * the _chain function, it might have more room now
3144 * to store the buffer/event in the queue */
3145 #define QUEUE_CAPACITY_CHANGE(q)\
3146 GST_QUEUE2_SIGNAL_DEL (queue);
3148 /* Changing the minimum required fill level must
3149 * wake up the _loop function as it might now
3150 * be able to preceed.
3152 #define QUEUE_THRESHOLD_CHANGE(q)\
3153 GST_QUEUE2_SIGNAL_ADD (queue);
3156 gst_queue2_set_temp_template (GstQueue2 * queue, const gchar * template)
3160 /* the element must be stopped in order to do this */
3161 GST_OBJECT_LOCK (queue);
3162 state = GST_STATE (queue);
3163 if (state != GST_STATE_READY && state != GST_STATE_NULL)
3165 GST_OBJECT_UNLOCK (queue);
3167 /* set new location */
3168 g_free (queue->temp_template);
3169 queue->temp_template = g_strdup (template);
3176 GST_WARNING_OBJECT (queue, "setting temp-template property in wrong state");
3177 GST_OBJECT_UNLOCK (queue);
3182 gst_queue2_set_property (GObject * object,
3183 guint prop_id, const GValue * value, GParamSpec * pspec)
3185 GstQueue2 *queue = GST_QUEUE2 (object);
3187 /* someone could change levels here, and since this
3188 * affects the get/put funcs, we need to lock for safety. */
3189 GST_QUEUE2_MUTEX_LOCK (queue);
3192 case PROP_MAX_SIZE_BYTES:
3193 queue->max_level.bytes = g_value_get_uint (value);
3194 QUEUE_CAPACITY_CHANGE (queue);
3196 case PROP_MAX_SIZE_BUFFERS:
3197 queue->max_level.buffers = g_value_get_uint (value);
3198 QUEUE_CAPACITY_CHANGE (queue);
3200 case PROP_MAX_SIZE_TIME:
3201 queue->max_level.time = g_value_get_uint64 (value);
3202 /* set rate_time to the same value. We use an extra field in the level
3203 * structure so that we can easily access and compare it */
3204 queue->max_level.rate_time = queue->max_level.time;
3205 QUEUE_CAPACITY_CHANGE (queue);
3207 case PROP_USE_BUFFERING:
3208 queue->use_buffering = g_value_get_boolean (value);
3210 case PROP_USE_RATE_ESTIMATE:
3211 queue->use_rate_estimate = g_value_get_boolean (value);
3213 case PROP_LOW_PERCENT:
3214 queue->low_percent = g_value_get_int (value);
3216 case PROP_HIGH_PERCENT:
3217 queue->high_percent = g_value_get_int (value);
3219 case PROP_TEMP_TEMPLATE:
3220 gst_queue2_set_temp_template (queue, g_value_get_string (value));
3222 case PROP_TEMP_LOCATION:
3223 g_free (queue->temp_location);
3224 queue->temp_location = g_value_dup_string (value);
3225 /* you can set the property back to NULL to make it use the temp-tmpl
3227 queue->temp_location_set = queue->temp_location != NULL;
3229 case PROP_TEMP_REMOVE:
3230 queue->temp_remove = g_value_get_boolean (value);
3232 case PROP_RING_BUFFER_MAX_SIZE:
3233 queue->ring_buffer_max_size = g_value_get_uint64 (value);
3236 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3240 GST_QUEUE2_MUTEX_UNLOCK (queue);
3244 gst_queue2_get_property (GObject * object,
3245 guint prop_id, GValue * value, GParamSpec * pspec)
3247 GstQueue2 *queue = GST_QUEUE2 (object);
3249 GST_QUEUE2_MUTEX_LOCK (queue);
3252 case PROP_CUR_LEVEL_BYTES:
3253 g_value_set_uint (value, queue->cur_level.bytes);
3255 case PROP_CUR_LEVEL_BUFFERS:
3256 g_value_set_uint (value, queue->cur_level.buffers);
3258 case PROP_CUR_LEVEL_TIME:
3259 g_value_set_uint64 (value, queue->cur_level.time);
3261 case PROP_MAX_SIZE_BYTES:
3262 g_value_set_uint (value, queue->max_level.bytes);
3264 case PROP_MAX_SIZE_BUFFERS:
3265 g_value_set_uint (value, queue->max_level.buffers);
3267 case PROP_MAX_SIZE_TIME:
3268 g_value_set_uint64 (value, queue->max_level.time);
3270 case PROP_USE_BUFFERING:
3271 g_value_set_boolean (value, queue->use_buffering);
3273 case PROP_USE_RATE_ESTIMATE:
3274 g_value_set_boolean (value, queue->use_rate_estimate);
3276 case PROP_LOW_PERCENT:
3277 g_value_set_int (value, queue->low_percent);
3279 case PROP_HIGH_PERCENT:
3280 g_value_set_int (value, queue->high_percent);
3282 case PROP_TEMP_TEMPLATE:
3283 g_value_set_string (value, queue->temp_template);
3285 case PROP_TEMP_LOCATION:
3286 g_value_set_string (value, queue->temp_location);
3288 case PROP_TEMP_REMOVE:
3289 g_value_set_boolean (value, queue->temp_remove);
3291 case PROP_RING_BUFFER_MAX_SIZE:
3292 g_value_set_uint64 (value, queue->ring_buffer_max_size);
3295 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3299 GST_QUEUE2_MUTEX_UNLOCK (queue);