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)) {
665 /* start is where we'll be getting from and as such writing next */
666 queue->current = add_range (queue, segment->start);
667 /* update the stats for this range */
668 update_cur_level (queue, queue->current);
672 /* now configure the values, we use these to track timestamps on the
674 if (segment->format != GST_FORMAT_TIME) {
675 /* non-time format, pretent the current time segment is closed with a
676 * 0 start and unknown stop time. */
677 segment->format = GST_FORMAT_TIME;
683 GST_DEBUG_OBJECT (queue, "configured SEGMENT %" GST_SEGMENT_FORMAT, segment);
686 queue->sink_tainted = TRUE;
688 queue->src_tainted = TRUE;
690 /* segment can update the time level of the queue */
691 update_time_level (queue);
694 /* take a buffer and update segment, updating the time level of the queue. */
696 apply_buffer (GstQueue2 * queue, GstBuffer * buffer, GstSegment * segment,
699 GstClockTime duration, timestamp;
701 timestamp = GST_BUFFER_TIMESTAMP (buffer);
702 duration = GST_BUFFER_DURATION (buffer);
704 /* if no timestamp is set, assume it's continuous with the previous
706 if (timestamp == GST_CLOCK_TIME_NONE)
707 timestamp = segment->position;
710 if (duration != GST_CLOCK_TIME_NONE)
711 timestamp += duration;
713 GST_DEBUG_OBJECT (queue, "position updated to %" GST_TIME_FORMAT,
714 GST_TIME_ARGS (timestamp));
716 segment->position = timestamp;
719 queue->sink_tainted = TRUE;
721 queue->src_tainted = TRUE;
723 /* calc diff with other end */
724 update_time_level (queue);
728 buffer_list_apply_time (GstBuffer ** buf, guint idx, gpointer data)
730 GstClockTime *timestamp = data;
732 GST_TRACE ("buffer %u has ts %" GST_TIME_FORMAT
733 " duration %" GST_TIME_FORMAT, idx,
734 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*buf)),
735 GST_TIME_ARGS (GST_BUFFER_DURATION (*buf)));
737 if (GST_BUFFER_TIMESTAMP_IS_VALID (*buf))
738 *timestamp = GST_BUFFER_TIMESTAMP (*buf);
740 if (GST_BUFFER_DURATION_IS_VALID (*buf))
741 *timestamp += GST_BUFFER_DURATION (*buf);
743 GST_TRACE ("ts now %" GST_TIME_FORMAT, GST_TIME_ARGS (*timestamp));
747 /* take a buffer list and update segment, updating the time level of the queue */
749 apply_buffer_list (GstQueue2 * queue, GstBufferList * buffer_list,
750 GstSegment * segment, gboolean is_sink)
752 GstClockTime timestamp;
754 /* if no timestamp is set, assume it's continuous with the previous time */
755 timestamp = segment->position;
757 gst_buffer_list_foreach (buffer_list, buffer_list_apply_time, ×tamp);
759 GST_DEBUG_OBJECT (queue, "last_stop updated to %" GST_TIME_FORMAT,
760 GST_TIME_ARGS (timestamp));
762 segment->position = timestamp;
765 queue->sink_tainted = TRUE;
767 queue->src_tainted = TRUE;
769 /* calc diff with other end */
770 update_time_level (queue);
774 update_buffering (GstQueue2 * queue)
777 gboolean post = FALSE;
779 if (queue->high_percent <= 0)
782 #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)
785 /* on EOS we are always 100% full, we set the var here so that it we can
786 * reuse the logic below to stop buffering */
788 GST_LOG_OBJECT (queue, "we are EOS");
790 /* figure out the percent we are filled, we take the max of all formats. */
792 if (!QUEUE_IS_USING_RING_BUFFER (queue)) {
793 percent = GET_PERCENT (bytes, 0);
795 guint64 rb_size = queue->ring_buffer_max_size;
796 percent = GET_PERCENT (bytes, rb_size);
798 percent = MAX (percent, GET_PERCENT (time, 0));
799 percent = MAX (percent, GET_PERCENT (buffers, 0));
801 /* also apply the rate estimate when we need to */
802 if (queue->use_rate_estimate)
803 percent = MAX (percent, GET_PERCENT (rate_time, 0));
806 if (queue->is_buffering) {
808 /* if we were buffering see if we reached the high watermark */
809 if (percent >= queue->high_percent)
810 queue->is_buffering = FALSE;
812 /* we were not buffering, check if we need to start buffering if we drop
813 * below the low threshold */
814 if (percent < queue->low_percent) {
815 queue->is_buffering = TRUE;
816 queue->buffering_iteration++;
822 GstBufferingMode mode;
823 gint64 buffering_left = -1;
825 /* scale to high percent so that it becomes the 100% mark */
826 percent = percent * 100 / queue->high_percent;
831 if (percent != queue->buffering_percent) {
832 queue->buffering_percent = percent;
834 if (!QUEUE_IS_USING_QUEUE (queue)) {
837 if (QUEUE_IS_USING_RING_BUFFER (queue))
838 mode = GST_BUFFERING_TIMESHIFT;
840 mode = GST_BUFFERING_DOWNLOAD;
842 if (queue->byte_in_rate > 0) {
843 if (gst_pad_peer_query_duration (queue->sinkpad, GST_FORMAT_BYTES,
846 (gdouble) ((duration -
847 queue->current->writing_pos) * 1000) / queue->byte_in_rate;
850 buffering_left = G_MAXINT64;
853 mode = GST_BUFFERING_STREAM;
856 GST_DEBUG_OBJECT (queue, "buffering %d percent", (gint) percent);
857 message = gst_message_new_buffering (GST_OBJECT_CAST (queue),
859 gst_message_set_buffering_stats (message, mode,
860 queue->byte_in_rate, queue->byte_out_rate, buffering_left);
862 gst_element_post_message (GST_ELEMENT_CAST (queue), message);
865 GST_DEBUG_OBJECT (queue, "filled %d percent", (gint) percent);
872 reset_rate_timer (GstQueue2 * queue)
875 queue->bytes_out = 0;
876 queue->byte_in_rate = 0.0;
877 queue->byte_in_period = 0;
878 queue->byte_out_rate = 0.0;
879 queue->last_in_elapsed = 0.0;
880 queue->last_out_elapsed = 0.0;
881 queue->in_timer_started = FALSE;
882 queue->out_timer_started = FALSE;
885 /* the interval in seconds to recalculate the rate */
886 #define RATE_INTERVAL 0.2
887 /* Tuning for rate estimation. We use a large window for the input rate because
888 * it should be stable when connected to a network. The output rate is less
889 * stable (the elements preroll, queues behind a demuxer fill, ...) and should
890 * therefore adapt more quickly.
891 * However, initial input rate may be subject to a burst, and should therefore
892 * initially also adapt more quickly to changes, and only later on give higher
893 * weight to previous values. */
894 #define AVG_IN(avg,val,w1,w2) ((avg) * (w1) + (val) * (w2)) / ((w1) + (w2))
895 #define AVG_OUT(avg,val) ((avg) * 3.0 + (val)) / 4.0
898 update_in_rates (GstQueue2 * queue)
900 gdouble elapsed, period;
901 gdouble byte_in_rate;
903 if (!queue->in_timer_started) {
904 queue->in_timer_started = TRUE;
905 g_timer_start (queue->in_timer);
909 elapsed = g_timer_elapsed (queue->in_timer, NULL);
911 /* recalc after each interval. */
912 if (queue->last_in_elapsed + RATE_INTERVAL < elapsed) {
913 period = elapsed - queue->last_in_elapsed;
915 GST_DEBUG_OBJECT (queue,
916 "rates: period %f, in %" G_GUINT64_FORMAT ", global period %f",
917 period, queue->bytes_in, queue->byte_in_period);
919 byte_in_rate = queue->bytes_in / period;
921 if (queue->byte_in_rate == 0.0)
922 queue->byte_in_rate = byte_in_rate;
924 queue->byte_in_rate = AVG_IN (queue->byte_in_rate, byte_in_rate,
925 (double) queue->byte_in_period, period);
927 /* another data point, cap at 16 for long time running average */
928 if (queue->byte_in_period < 16 * RATE_INTERVAL)
929 queue->byte_in_period += period;
931 /* reset the values to calculate rate over the next interval */
932 queue->last_in_elapsed = elapsed;
936 if (queue->byte_in_rate > 0.0) {
937 queue->cur_level.rate_time =
938 queue->cur_level.bytes / queue->byte_in_rate * GST_SECOND;
940 GST_DEBUG_OBJECT (queue, "rates: in %f, time %" GST_TIME_FORMAT,
941 queue->byte_in_rate, GST_TIME_ARGS (queue->cur_level.rate_time));
945 update_out_rates (GstQueue2 * queue)
947 gdouble elapsed, period;
948 gdouble byte_out_rate;
950 if (!queue->out_timer_started) {
951 queue->out_timer_started = TRUE;
952 g_timer_start (queue->out_timer);
956 elapsed = g_timer_elapsed (queue->out_timer, NULL);
958 /* recalc after each interval. */
959 if (queue->last_out_elapsed + RATE_INTERVAL < elapsed) {
960 period = elapsed - queue->last_out_elapsed;
962 GST_DEBUG_OBJECT (queue,
963 "rates: period %f, out %" G_GUINT64_FORMAT, period, queue->bytes_out);
965 byte_out_rate = queue->bytes_out / period;
967 if (queue->byte_out_rate == 0.0)
968 queue->byte_out_rate = byte_out_rate;
970 queue->byte_out_rate = AVG_OUT (queue->byte_out_rate, byte_out_rate);
972 /* reset the values to calculate rate over the next interval */
973 queue->last_out_elapsed = elapsed;
974 queue->bytes_out = 0;
976 if (queue->byte_in_rate > 0.0) {
977 queue->cur_level.rate_time =
978 queue->cur_level.bytes / queue->byte_in_rate * GST_SECOND;
980 GST_DEBUG_OBJECT (queue, "rates: out %f, time %" GST_TIME_FORMAT,
981 queue->byte_out_rate, GST_TIME_ARGS (queue->cur_level.rate_time));
985 update_cur_pos (GstQueue2 * queue, GstQueue2Range * range, guint64 pos)
987 guint64 reading_pos, max_reading_pos;
990 max_reading_pos = range->max_reading_pos;
992 max_reading_pos = MAX (max_reading_pos, reading_pos);
994 GST_DEBUG_OBJECT (queue,
995 "updating max_reading_pos from %" G_GUINT64_FORMAT " to %"
996 G_GUINT64_FORMAT, range->max_reading_pos, max_reading_pos);
997 range->max_reading_pos = max_reading_pos;
999 update_cur_level (queue, range);
1003 perform_seek_to_offset (GstQueue2 * queue, guint64 offset)
1008 /* until we receive the FLUSH_STOP from this seek, we skip data */
1009 queue->seeking = TRUE;
1010 GST_QUEUE2_MUTEX_UNLOCK (queue);
1012 GST_DEBUG_OBJECT (queue, "Seeking to %" G_GUINT64_FORMAT, offset);
1015 gst_event_new_seek (1.0, GST_FORMAT_BYTES,
1016 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset,
1017 GST_SEEK_TYPE_NONE, -1);
1019 res = gst_pad_push_event (queue->sinkpad, event);
1020 GST_QUEUE2_MUTEX_LOCK (queue);
1023 queue->current = add_range (queue, offset);
1028 /* see if there is enough data in the file to read a full buffer */
1030 gst_queue2_have_data (GstQueue2 * queue, guint64 offset, guint length)
1032 GstQueue2Range *range;
1034 GST_DEBUG_OBJECT (queue, "looking for offset %" G_GUINT64_FORMAT ", len %u",
1037 if ((range = find_range (queue, offset))) {
1038 if (queue->current != range) {
1039 GST_DEBUG_OBJECT (queue, "switching ranges, do seek to range position");
1040 perform_seek_to_offset (queue, range->writing_pos);
1043 GST_INFO_OBJECT (queue, "cur_level.bytes %u (max %" G_GUINT64_FORMAT ")",
1044 queue->cur_level.bytes, QUEUE_MAX_BYTES (queue));
1046 /* we have a range for offset */
1047 GST_DEBUG_OBJECT (queue,
1048 "we have a range %p, offset %" G_GUINT64_FORMAT ", writing_pos %"
1049 G_GUINT64_FORMAT, range, range->offset, range->writing_pos);
1051 if (!QUEUE_IS_USING_RING_BUFFER (queue) && queue->is_eos)
1054 if (offset + length <= range->writing_pos)
1057 GST_DEBUG_OBJECT (queue,
1058 "Need more data (%" G_GUINT64_FORMAT " bytes more)",
1059 (offset + length) - range->writing_pos);
1062 GST_INFO_OBJECT (queue, "not found in any range off %" G_GUINT64_FORMAT
1063 " len %u", offset, length);
1064 /* we don't have the range, see how far away we are */
1065 if (!queue->is_eos && queue->current) {
1066 /* FIXME, find a good threshold based on the incoming rate. */
1067 guint64 threshold = 1024 * 512;
1069 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1072 distance = QUEUE_MAX_BYTES (queue) - queue->cur_level.bytes;
1073 /* don't wait for the complete buffer to fill */
1074 distance = MIN (distance, threshold);
1076 if (offset >= queue->current->offset && offset <=
1077 queue->current->writing_pos + distance) {
1078 GST_INFO_OBJECT (queue,
1079 "requested data is within range, wait for data");
1082 } else if (offset < queue->current->writing_pos + threshold) {
1083 update_cur_pos (queue, queue->current, offset + length);
1084 GST_INFO_OBJECT (queue, "wait for data");
1089 /* too far away, do a seek */
1090 perform_seek_to_offset (queue, offset);
1097 #define FSEEK_FILE(file,offset) (fseeko (file, (off_t) offset, SEEK_SET) != 0)
1098 #elif defined (G_OS_UNIX) || defined (G_OS_WIN32)
1099 #define FSEEK_FILE(file,offset) (lseek (fileno (file), (off_t) offset, SEEK_SET) == (off_t) -1)
1101 #define FSEEK_FILE(file,offset) (fseek (file, offset, SEEK_SET) != 0)
1104 static GstFlowReturn
1105 gst_queue2_read_data_at_offset (GstQueue2 * queue, guint64 offset, guint length,
1106 guint8 * dst, gint64 * read_return)
1108 guint8 *ring_buffer;
1111 ring_buffer = queue->ring_buffer;
1113 if (QUEUE_IS_USING_TEMP_FILE (queue) && FSEEK_FILE (queue->temp_file, offset))
1116 /* this should not block */
1117 GST_LOG_OBJECT (queue, "Reading %d bytes from offset %" G_GUINT64_FORMAT,
1119 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1120 res = fread (dst, 1, length, queue->temp_file);
1122 memcpy (dst, ring_buffer + offset, length);
1126 GST_LOG_OBJECT (queue, "read %" G_GSIZE_FORMAT " bytes", res);
1128 if (G_UNLIKELY (res < length)) {
1129 if (!QUEUE_IS_USING_TEMP_FILE (queue))
1130 goto could_not_read;
1131 /* check for errors or EOF */
1132 if (ferror (queue->temp_file))
1133 goto could_not_read;
1134 if (feof (queue->temp_file) && length > 0)
1144 GST_ELEMENT_ERROR (queue, RESOURCE, SEEK, (NULL), GST_ERROR_SYSTEM);
1145 return GST_FLOW_ERROR;
1149 GST_ELEMENT_ERROR (queue, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
1150 return GST_FLOW_ERROR;
1154 GST_DEBUG ("non-regular file hits EOS");
1155 return GST_FLOW_EOS;
1159 static GstFlowReturn
1160 gst_queue2_create_read (GstQueue2 * queue, guint64 offset, guint length,
1161 GstBuffer ** buffer)
1166 guint64 file_offset;
1167 guint block_length, remaining, read_length;
1171 GstFlowReturn ret = GST_FLOW_OK;
1173 /* allocate the output buffer of the requested size */
1174 if (*buffer == NULL)
1175 buf = gst_buffer_new_allocate (NULL, length, NULL);
1179 gst_buffer_map (buf, &info, GST_MAP_WRITE);
1182 GST_DEBUG_OBJECT (queue, "Reading %u bytes from %" G_GUINT64_FORMAT, length,
1186 rb_size = queue->ring_buffer_max_size;
1187 max_size = QUEUE_MAX_BYTES (queue);
1190 while (remaining > 0) {
1191 /* configure how much/whether to read */
1192 if (!gst_queue2_have_data (queue, rpos, remaining)) {
1195 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1198 /* calculate how far away the offset is */
1199 if (queue->current->writing_pos > rpos)
1200 level = queue->current->writing_pos - rpos;
1204 GST_DEBUG_OBJECT (queue,
1205 "reading %" G_GUINT64_FORMAT ", writing %" G_GUINT64_FORMAT
1206 ", level %" G_GUINT64_FORMAT ", max %" G_GUINT64_FORMAT,
1207 rpos, queue->current->writing_pos, level, max_size);
1209 if (level >= max_size) {
1210 /* we don't have the data but if we have a ring buffer that is full, we
1212 GST_DEBUG_OBJECT (queue,
1213 "ring buffer full, reading QUEUE_MAX_BYTES %"
1214 G_GUINT64_FORMAT " bytes", max_size);
1215 read_length = max_size;
1216 } else if (queue->is_eos) {
1217 /* won't get any more data so read any data we have */
1219 GST_DEBUG_OBJECT (queue,
1220 "EOS hit but read %" G_GUINT64_FORMAT " bytes that we have",
1222 read_length = level;
1230 if (read_length == 0) {
1231 if (QUEUE_IS_USING_RING_BUFFER (queue)
1232 && queue->current->max_reading_pos > rpos) {
1233 /* protect cached data (data between offset and max_reading_pos)
1234 * and update current level */
1235 GST_DEBUG_OBJECT (queue,
1236 "protecting cached data [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT
1237 "]", rpos, queue->current->max_reading_pos);
1238 queue->current->max_reading_pos = rpos;
1239 update_cur_level (queue, queue->current);
1241 GST_DEBUG_OBJECT (queue, "waiting for add");
1242 GST_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
1246 /* we have the requested data so read it */
1247 read_length = remaining;
1250 /* set range reading_pos to actual reading position for this read */
1251 queue->current->reading_pos = rpos;
1253 /* configure how much and from where to read */
1254 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1256 (queue->current->rb_offset + (rpos -
1257 queue->current->offset)) % rb_size;
1258 if (file_offset + read_length > rb_size) {
1259 block_length = rb_size - file_offset;
1261 block_length = read_length;
1265 block_length = read_length;
1268 /* while we still have data to read, we loop */
1269 while (read_length > 0) {
1273 gst_queue2_read_data_at_offset (queue, file_offset, block_length,
1274 data, &read_return);
1275 if (ret != GST_FLOW_OK)
1278 file_offset += read_return;
1279 if (QUEUE_IS_USING_RING_BUFFER (queue))
1280 file_offset %= rb_size;
1282 data += read_return;
1283 read_length -= read_return;
1284 block_length = read_length;
1285 remaining -= read_return;
1287 rpos = (queue->current->reading_pos += read_return);
1288 update_cur_pos (queue, queue->current, queue->current->reading_pos);
1290 GST_QUEUE2_SIGNAL_DEL (queue);
1291 GST_DEBUG_OBJECT (queue, "%u bytes left to read", remaining);
1294 gst_buffer_unmap (buf, &info);
1295 gst_buffer_resize (buf, 0, length);
1297 GST_BUFFER_OFFSET (buf) = offset;
1298 GST_BUFFER_OFFSET_END (buf) = offset + length;
1307 GST_DEBUG_OBJECT (queue, "EOS hit and we don't have any requested data");
1308 gst_buffer_unmap (buf, &info);
1309 if (*buffer == NULL)
1310 gst_buffer_unref (buf);
1311 return GST_FLOW_EOS;
1315 GST_DEBUG_OBJECT (queue, "we are flushing");
1316 gst_buffer_unmap (buf, &info);
1317 if (*buffer == NULL)
1318 gst_buffer_unref (buf);
1319 return GST_FLOW_FLUSHING;
1323 GST_DEBUG_OBJECT (queue, "we have a read error");
1324 gst_buffer_unmap (buf, &info);
1325 if (*buffer == NULL)
1326 gst_buffer_unref (buf);
1331 /* should be called with QUEUE_LOCK */
1332 static GstMiniObject *
1333 gst_queue2_read_item_from_file (GstQueue2 * queue)
1335 GstMiniObject *item;
1337 if (queue->stream_start_event != NULL) {
1338 item = GST_MINI_OBJECT_CAST (queue->stream_start_event);
1339 queue->stream_start_event = NULL;
1340 } else if (queue->starting_segment != NULL) {
1341 item = GST_MINI_OBJECT_CAST (queue->starting_segment);
1342 queue->starting_segment = NULL;
1345 GstBuffer *buffer = NULL;
1346 guint64 reading_pos;
1348 reading_pos = queue->current->reading_pos;
1351 gst_queue2_create_read (queue, reading_pos, DEFAULT_BUFFER_SIZE,
1356 item = GST_MINI_OBJECT_CAST (buffer);
1359 item = GST_MINI_OBJECT_CAST (gst_event_new_eos ());
1369 /* must be called with MUTEX_LOCK. Will briefly release the lock when notifying
1370 * the temp filename. */
1372 gst_queue2_open_temp_location_file (GstQueue2 * queue)
1377 if (queue->temp_file)
1378 goto already_opened;
1380 GST_DEBUG_OBJECT (queue, "opening temp file %s", queue->temp_template);
1382 /* we have two cases:
1383 * - temp_location was set to something !NULL (Deprecated). in this case we
1384 * open the specified filename.
1385 * - temp_template was set, allocate a filename and open that filename
1387 if (!queue->temp_location_set) {
1389 if (queue->temp_template == NULL)
1392 /* make copy of the template, we don't want to change this */
1393 name = g_strdup (queue->temp_template);
1394 fd = g_mkstemp (name);
1396 goto mkstemp_failed;
1398 /* open the file for update/writing */
1399 queue->temp_file = fdopen (fd, "wb+");
1400 /* error creating file */
1401 if (queue->temp_file == NULL)
1404 g_free (queue->temp_location);
1405 queue->temp_location = name;
1407 GST_QUEUE2_MUTEX_UNLOCK (queue);
1409 /* we can't emit the notify with the lock */
1410 g_object_notify (G_OBJECT (queue), "temp-location");
1412 GST_QUEUE2_MUTEX_LOCK (queue);
1414 /* open the file for update/writing, this is deprecated but we still need to
1415 * support it for API/ABI compatibility */
1416 queue->temp_file = g_fopen (queue->temp_location, "wb+");
1417 /* error creating file */
1418 if (queue->temp_file == NULL)
1421 GST_DEBUG_OBJECT (queue, "opened temp file %s", queue->temp_template);
1428 GST_DEBUG_OBJECT (queue, "temp file was already open");
1433 GST_ELEMENT_ERROR (queue, RESOURCE, NOT_FOUND,
1434 (_("No Temp directory specified.")), (NULL));
1439 GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
1440 (_("Could not create temp file \"%s\"."), queue->temp_template),
1447 GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
1448 (_("Could not open file \"%s\" for reading."), name), GST_ERROR_SYSTEM);
1457 gst_queue2_close_temp_location_file (GstQueue2 * queue)
1460 if (queue->temp_file == NULL)
1463 GST_DEBUG_OBJECT (queue, "closing temp file");
1465 fflush (queue->temp_file);
1466 fclose (queue->temp_file);
1468 if (queue->temp_remove)
1469 remove (queue->temp_location);
1471 queue->temp_file = NULL;
1472 clean_ranges (queue);
1476 gst_queue2_flush_temp_file (GstQueue2 * queue)
1478 if (queue->temp_file == NULL)
1481 GST_DEBUG_OBJECT (queue, "flushing temp file");
1483 queue->temp_file = g_freopen (queue->temp_location, "wb+", queue->temp_file);
1487 gst_queue2_locked_flush (GstQueue2 * queue)
1489 if (!QUEUE_IS_USING_QUEUE (queue)) {
1490 if (QUEUE_IS_USING_TEMP_FILE (queue))
1491 gst_queue2_flush_temp_file (queue);
1492 init_ranges (queue);
1494 while (!g_queue_is_empty (&queue->queue)) {
1495 GstMiniObject *data = g_queue_pop_head (&queue->queue);
1497 /* Then lose another reference because we are supposed to destroy that
1498 data when flushing */
1499 gst_mini_object_unref (data);
1502 GST_QUEUE2_CLEAR_LEVEL (queue->cur_level);
1503 gst_segment_init (&queue->sink_segment, GST_FORMAT_TIME);
1504 gst_segment_init (&queue->src_segment, GST_FORMAT_TIME);
1505 queue->sinktime = queue->srctime = GST_CLOCK_TIME_NONE;
1506 queue->sink_tainted = queue->src_tainted = TRUE;
1507 if (queue->starting_segment != NULL)
1508 gst_event_unref (queue->starting_segment);
1509 queue->starting_segment = NULL;
1510 queue->segment_event_received = FALSE;
1511 gst_event_replace (&queue->stream_start_event, NULL);
1513 /* we deleted a lot of something */
1514 GST_QUEUE2_SIGNAL_DEL (queue);
1518 gst_queue2_wait_free_space (GstQueue2 * queue)
1520 /* We make space available if we're "full" according to whatever
1521 * the user defined as "full". */
1522 if (gst_queue2_is_filled (queue)) {
1525 /* pause the timer while we wait. The fact that we are waiting does not mean
1526 * the byterate on the input pad is lower */
1527 if ((started = queue->in_timer_started))
1528 g_timer_stop (queue->in_timer);
1530 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
1531 "queue is full, waiting for free space");
1533 /* Wait for space to be available, we could be unlocked because of a flush. */
1534 GST_QUEUE2_WAIT_DEL_CHECK (queue, queue->sinkresult, out_flushing);
1536 while (gst_queue2_is_filled (queue));
1538 /* and continue if we were running before */
1540 g_timer_continue (queue->in_timer);
1547 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "queue is flushing");
1553 gst_queue2_create_write (GstQueue2 * queue, GstBuffer * buffer)
1556 guint8 *data, *ring_buffer;
1557 guint size, rb_size;
1558 guint64 writing_pos, new_writing_pos;
1559 GstQueue2Range *range, *prev, *next;
1561 if (QUEUE_IS_USING_RING_BUFFER (queue))
1562 writing_pos = queue->current->rb_writing_pos;
1564 writing_pos = queue->current->writing_pos;
1565 ring_buffer = queue->ring_buffer;
1566 rb_size = queue->ring_buffer_max_size;
1568 gst_buffer_map (buffer, &info, GST_MAP_READ);
1573 GST_DEBUG_OBJECT (queue, "Writing %u bytes to %" G_GUINT64_FORMAT, size,
1574 GST_BUFFER_OFFSET (buffer));
1579 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1582 /* calculate the space in the ring buffer not used by data from
1583 * the current range */
1584 while (QUEUE_MAX_BYTES (queue) <= queue->cur_level.bytes) {
1585 /* wait until there is some free space */
1586 GST_QUEUE2_WAIT_DEL_CHECK (queue, queue->sinkresult, out_flushing);
1588 /* get the amount of space we have */
1589 space = QUEUE_MAX_BYTES (queue) - queue->cur_level.bytes;
1591 /* calculate if we need to split or if we can write the entire
1593 to_write = MIN (size, space);
1595 /* the writing position in the ring buffer after writing (part
1596 * or all of) the buffer */
1597 new_writing_pos = (writing_pos + to_write) % rb_size;
1600 range = queue->ranges;
1602 /* if we need to overwrite data in the ring buffer, we need to
1605 * warning: this code is complicated and includes some
1606 * simplifications - pen, paper and diagrams for the cases
1609 guint64 range_data_start, range_data_end;
1610 GstQueue2Range *range_to_destroy = NULL;
1612 range_data_start = range->rb_offset;
1613 range_data_end = range->rb_writing_pos;
1615 /* handle the special case where the range has no data in it */
1616 if (range->writing_pos == range->offset) {
1617 if (range != queue->current) {
1618 GST_DEBUG_OBJECT (queue,
1619 "Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
1620 G_GUINT64_FORMAT, range->offset, range->writing_pos);
1622 range_to_destroy = range;
1624 prev->next = range->next;
1629 if (range_data_end > range_data_start) {
1630 if (writing_pos >= range_data_end && new_writing_pos >= writing_pos)
1633 if (new_writing_pos > range_data_start) {
1634 if (new_writing_pos >= range_data_end) {
1635 GST_DEBUG_OBJECT (queue,
1636 "Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
1637 G_GUINT64_FORMAT, range->offset, range->writing_pos);
1639 range_to_destroy = range;
1641 prev->next = range->next;
1643 GST_DEBUG_OBJECT (queue,
1644 "advancing offsets from %" G_GUINT64_FORMAT " (%"
1645 G_GUINT64_FORMAT ") to %" G_GUINT64_FORMAT " (%"
1646 G_GUINT64_FORMAT ")", range->offset, range->rb_offset,
1647 range->offset + new_writing_pos - range_data_start,
1649 range->offset += (new_writing_pos - range_data_start);
1650 range->rb_offset = new_writing_pos;
1654 guint64 new_wpos_virt = writing_pos + to_write;
1656 if (new_wpos_virt <= range_data_start)
1659 if (new_wpos_virt > rb_size && new_writing_pos >= range_data_end) {
1660 GST_DEBUG_OBJECT (queue,
1661 "Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
1662 G_GUINT64_FORMAT, range->offset, range->writing_pos);
1664 range_to_destroy = range;
1666 prev->next = range->next;
1668 GST_DEBUG_OBJECT (queue,
1669 "advancing offsets from %" G_GUINT64_FORMAT " (%"
1670 G_GUINT64_FORMAT ") to %" G_GUINT64_FORMAT " (%"
1671 G_GUINT64_FORMAT ")", range->offset, range->rb_offset,
1672 range->offset + new_writing_pos - range_data_start,
1674 range->offset += (new_wpos_virt - range_data_start);
1675 range->rb_offset = new_writing_pos;
1680 if (!range_to_destroy)
1683 range = range->next;
1684 if (range_to_destroy) {
1685 if (range_to_destroy == queue->ranges)
1686 queue->ranges = range;
1687 g_slice_free (GstQueue2Range, range_to_destroy);
1688 range_to_destroy = NULL;
1693 new_writing_pos = writing_pos + to_write;
1696 if (QUEUE_IS_USING_TEMP_FILE (queue)
1697 && FSEEK_FILE (queue->temp_file, writing_pos))
1700 if (new_writing_pos > writing_pos) {
1701 GST_INFO_OBJECT (queue,
1702 "writing %u bytes to range [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT
1703 "] (rb wpos %" G_GUINT64_FORMAT ")", to_write, queue->current->offset,
1704 queue->current->writing_pos, queue->current->rb_writing_pos);
1705 /* either not using ring buffer or no wrapping, just write */
1706 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1707 if (fwrite (data, to_write, 1, queue->temp_file) != 1)
1710 memcpy (ring_buffer + writing_pos, data, to_write);
1713 if (!QUEUE_IS_USING_RING_BUFFER (queue)) {
1714 /* try to merge with next range */
1715 while ((next = queue->current->next)) {
1716 GST_INFO_OBJECT (queue,
1717 "checking merge with next range %" G_GUINT64_FORMAT " < %"
1718 G_GUINT64_FORMAT, new_writing_pos, next->offset);
1719 if (new_writing_pos < next->offset)
1722 GST_DEBUG_OBJECT (queue, "merging ranges %" G_GUINT64_FORMAT,
1725 /* remove the group, we could choose to not read the data in this range
1726 * again. This would involve us doing a seek to the current writing position
1727 * in the range. FIXME, It would probably make sense to do a seek when there
1728 * is a lot of data in the range we merged with to avoid reading it all
1730 queue->current->next = next->next;
1731 g_slice_free (GstQueue2Range, next);
1733 debug_ranges (queue);
1735 goto update_and_signal;
1739 guint block_one, block_two;
1741 block_one = rb_size - writing_pos;
1742 block_two = to_write - block_one;
1744 if (block_one > 0) {
1745 GST_INFO_OBJECT (queue, "writing %u bytes", block_one);
1746 /* write data to end of ring buffer */
1747 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1748 if (fwrite (data, block_one, 1, queue->temp_file) != 1)
1751 memcpy (ring_buffer + writing_pos, data, block_one);
1755 if (QUEUE_IS_USING_TEMP_FILE (queue) && FSEEK_FILE (queue->temp_file, 0))
1758 if (block_two > 0) {
1759 GST_INFO_OBJECT (queue, "writing %u bytes", block_two);
1760 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
1761 if (fwrite (data + block_one, block_two, 1, queue->temp_file) != 1)
1764 memcpy (ring_buffer, data + block_one, block_two);
1770 /* update the writing positions */
1772 GST_INFO_OBJECT (queue,
1773 "wrote %u bytes to %" G_GUINT64_FORMAT " (%u bytes remaining to write)",
1774 to_write, writing_pos, size);
1776 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
1778 queue->current->writing_pos += to_write;
1779 queue->current->rb_writing_pos = writing_pos = new_writing_pos;
1781 queue->current->writing_pos = writing_pos = new_writing_pos;
1783 update_cur_level (queue, queue->current);
1785 /* update the buffering status */
1786 if (queue->use_buffering)
1787 update_buffering (queue);
1789 GST_INFO_OBJECT (queue, "cur_level.bytes %u (max %" G_GUINT64_FORMAT ")",
1790 queue->cur_level.bytes, QUEUE_MAX_BYTES (queue));
1792 GST_QUEUE2_SIGNAL_ADD (queue);
1795 gst_buffer_unmap (buffer, &info);
1802 GST_DEBUG_OBJECT (queue, "we are flushing");
1803 gst_buffer_unmap (buffer, &info);
1804 /* FIXME - GST_FLOW_EOS ? */
1809 GST_ELEMENT_ERROR (queue, RESOURCE, SEEK, (NULL), GST_ERROR_SYSTEM);
1810 gst_buffer_unmap (buffer, &info);
1817 GST_ELEMENT_ERROR (queue, RESOURCE, NO_SPACE_LEFT, (NULL), (NULL));
1821 GST_ELEMENT_ERROR (queue, RESOURCE, WRITE,
1822 (_("Error while writing to download file.")),
1823 ("%s", g_strerror (errno)));
1826 gst_buffer_unmap (buffer, &info);
1832 buffer_list_create_write (GstBuffer ** buf, guint idx, gpointer q)
1834 GstQueue2 *queue = q;
1836 GST_TRACE_OBJECT (queue,
1837 "writing buffer %u of size %" G_GSIZE_FORMAT " bytes", idx,
1838 gst_buffer_get_size (*buf));
1840 if (!gst_queue2_create_write (queue, *buf)) {
1841 GST_INFO_OBJECT (queue, "create_write() returned FALSE, bailing out");
1848 buffer_list_calc_size (GstBuffer ** buf, guint idx, gpointer data)
1850 guint *p_size = data;
1853 buf_size = gst_buffer_get_size (*buf);
1854 GST_TRACE ("buffer %u in has size %" G_GSIZE_FORMAT, idx, buf_size);
1855 *p_size += buf_size;
1859 /* enqueue an item an update the level stats */
1861 gst_queue2_locked_enqueue (GstQueue2 * queue, gpointer item,
1862 GstQueue2ItemType item_type)
1864 if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
1868 buffer = GST_BUFFER_CAST (item);
1869 size = gst_buffer_get_size (buffer);
1871 /* add buffer to the statistics */
1872 if (QUEUE_IS_USING_QUEUE (queue)) {
1873 queue->cur_level.buffers++;
1874 queue->cur_level.bytes += size;
1876 queue->bytes_in += size;
1878 /* apply new buffer to segment stats */
1879 apply_buffer (queue, buffer, &queue->sink_segment, TRUE);
1880 /* update the byterate stats */
1881 update_in_rates (queue);
1883 if (!QUEUE_IS_USING_QUEUE (queue)) {
1884 /* FIXME - check return value? */
1885 gst_queue2_create_write (queue, buffer);
1887 } else if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
1888 GstBufferList *buffer_list;
1891 buffer_list = GST_BUFFER_LIST_CAST (item);
1893 gst_buffer_list_foreach (buffer_list, buffer_list_calc_size, &size);
1894 GST_LOG_OBJECT (queue, "total size of buffer list: %u bytes", size);
1896 /* add buffer to the statistics */
1897 if (QUEUE_IS_USING_QUEUE (queue)) {
1898 queue->cur_level.buffers++;
1899 queue->cur_level.bytes += size;
1901 queue->bytes_in += size;
1903 /* apply new buffer to segment stats */
1904 apply_buffer_list (queue, buffer_list, &queue->sink_segment, TRUE);
1906 /* update the byterate stats */
1907 update_in_rates (queue);
1909 if (!QUEUE_IS_USING_QUEUE (queue)) {
1910 gst_buffer_list_foreach (buffer_list, buffer_list_create_write, queue);
1912 } else if (item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
1915 event = GST_EVENT_CAST (item);
1917 switch (GST_EVENT_TYPE (event)) {
1919 /* Zero the thresholds, this makes sure the queue is completely
1920 * filled and we can read all data from the queue. */
1921 GST_DEBUG_OBJECT (queue, "we have EOS");
1922 queue->is_eos = TRUE;
1924 case GST_EVENT_SEGMENT:
1925 apply_segment (queue, event, &queue->sink_segment, TRUE);
1926 /* This is our first new segment, we hold it
1927 * as we can't save it on the temp file */
1928 if (!QUEUE_IS_USING_QUEUE (queue)) {
1929 if (queue->segment_event_received)
1930 goto unexpected_event;
1932 queue->segment_event_received = TRUE;
1933 if (queue->starting_segment != NULL)
1934 gst_event_unref (queue->starting_segment);
1935 queue->starting_segment = event;
1938 /* a new segment allows us to accept more buffers if we got EOS
1939 * from downstream */
1940 queue->unexpected = FALSE;
1942 case GST_EVENT_STREAM_START:
1943 if (!QUEUE_IS_USING_QUEUE (queue)) {
1944 gst_event_replace (&queue->stream_start_event, event);
1945 gst_event_unref (event);
1950 if (!QUEUE_IS_USING_QUEUE (queue))
1951 goto unexpected_event;
1955 g_warning ("Unexpected item %p added in queue %s (refcounting problem?)",
1956 item, GST_OBJECT_NAME (queue));
1957 /* we can't really unref since we don't know what it is */
1962 /* update the buffering status */
1963 if (queue->use_buffering)
1964 update_buffering (queue);
1966 if (QUEUE_IS_USING_QUEUE (queue)) {
1967 g_queue_push_tail (&queue->queue, item);
1969 gst_mini_object_unref (GST_MINI_OBJECT_CAST (item));
1972 GST_QUEUE2_SIGNAL_ADD (queue);
1981 ("Unexpected event of kind %s can't be added in temp file of queue %s ",
1982 gst_event_type_get_name (GST_EVENT_TYPE (item)),
1983 GST_OBJECT_NAME (queue));
1984 gst_event_unref (GST_EVENT_CAST (item));
1989 /* dequeue an item from the queue and update level stats */
1990 static GstMiniObject *
1991 gst_queue2_locked_dequeue (GstQueue2 * queue, GstQueue2ItemType * item_type)
1993 GstMiniObject *item;
1995 if (!QUEUE_IS_USING_QUEUE (queue))
1996 item = gst_queue2_read_item_from_file (queue);
1998 item = g_queue_pop_head (&queue->queue);
2003 if (GST_IS_BUFFER (item)) {
2007 buffer = GST_BUFFER_CAST (item);
2008 size = gst_buffer_get_size (buffer);
2009 *item_type = GST_QUEUE2_ITEM_TYPE_BUFFER;
2011 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2012 "retrieved buffer %p from queue", buffer);
2014 if (QUEUE_IS_USING_QUEUE (queue)) {
2015 queue->cur_level.buffers--;
2016 queue->cur_level.bytes -= size;
2018 queue->bytes_out += size;
2020 apply_buffer (queue, buffer, &queue->src_segment, FALSE);
2021 /* update the byterate stats */
2022 update_out_rates (queue);
2023 /* update the buffering */
2024 if (queue->use_buffering)
2025 update_buffering (queue);
2027 } else if (GST_IS_EVENT (item)) {
2028 GstEvent *event = GST_EVENT_CAST (item);
2030 *item_type = GST_QUEUE2_ITEM_TYPE_EVENT;
2032 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2033 "retrieved event %p from queue", event);
2035 switch (GST_EVENT_TYPE (event)) {
2037 /* queue is empty now that we dequeued the EOS */
2038 GST_QUEUE2_CLEAR_LEVEL (queue->cur_level);
2040 case GST_EVENT_SEGMENT:
2041 apply_segment (queue, event, &queue->src_segment, FALSE);
2046 } else if (GST_IS_BUFFER_LIST (item)) {
2047 GstBufferList *buffer_list;
2050 buffer_list = GST_BUFFER_LIST_CAST (item);
2051 gst_buffer_list_foreach (buffer_list, buffer_list_calc_size, &size);
2052 *item_type = GST_QUEUE2_ITEM_TYPE_BUFFER_LIST;
2054 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2055 "retrieved buffer list %p from queue", buffer_list);
2057 if (QUEUE_IS_USING_QUEUE (queue)) {
2058 queue->cur_level.buffers--;
2059 queue->cur_level.bytes -= size;
2061 queue->bytes_out += size;
2063 apply_buffer_list (queue, buffer_list, &queue->src_segment, FALSE);
2064 /* update the byterate stats */
2065 update_out_rates (queue);
2066 /* update the buffering */
2067 if (queue->use_buffering)
2068 update_buffering (queue);
2072 ("Unexpected item %p dequeued from queue %s (refcounting problem?)",
2073 item, GST_OBJECT_NAME (queue));
2075 *item_type = GST_QUEUE2_ITEM_TYPE_UNKNOWN;
2077 GST_QUEUE2_SIGNAL_DEL (queue);
2084 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "the queue is empty");
2090 gst_queue2_handle_sink_event (GstPad * pad, GstObject * parent,
2095 queue = GST_QUEUE2 (parent);
2097 switch (GST_EVENT_TYPE (event)) {
2098 case GST_EVENT_FLUSH_START:
2100 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush start event");
2101 if (GST_PAD_MODE (queue->srcpad) == GST_PAD_MODE_PUSH) {
2103 gst_pad_push_event (queue->srcpad, event);
2105 /* now unblock the chain function */
2106 GST_QUEUE2_MUTEX_LOCK (queue);
2107 queue->srcresult = GST_FLOW_FLUSHING;
2108 queue->sinkresult = GST_FLOW_FLUSHING;
2109 /* unblock the loop and chain functions */
2110 GST_QUEUE2_SIGNAL_ADD (queue);
2111 GST_QUEUE2_SIGNAL_DEL (queue);
2112 GST_QUEUE2_MUTEX_UNLOCK (queue);
2114 /* make sure it pauses, this should happen since we sent
2115 * flush_start downstream. */
2116 gst_pad_pause_task (queue->srcpad);
2117 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "loop stopped");
2119 GST_QUEUE2_MUTEX_LOCK (queue);
2120 /* flush the sink pad */
2121 queue->sinkresult = GST_FLOW_FLUSHING;
2122 GST_QUEUE2_SIGNAL_DEL (queue);
2123 GST_QUEUE2_MUTEX_UNLOCK (queue);
2125 gst_event_unref (event);
2129 case GST_EVENT_FLUSH_STOP:
2131 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received flush stop event");
2133 if (GST_PAD_MODE (queue->srcpad) == GST_PAD_MODE_PUSH) {
2135 gst_pad_push_event (queue->srcpad, event);
2137 GST_QUEUE2_MUTEX_LOCK (queue);
2138 gst_queue2_locked_flush (queue);
2139 queue->srcresult = GST_FLOW_OK;
2140 queue->sinkresult = GST_FLOW_OK;
2141 queue->is_eos = FALSE;
2142 queue->unexpected = FALSE;
2143 queue->seeking = FALSE;
2144 /* reset rate counters */
2145 reset_rate_timer (queue);
2146 gst_pad_start_task (queue->srcpad, (GstTaskFunction) gst_queue2_loop,
2148 GST_QUEUE2_MUTEX_UNLOCK (queue);
2150 GST_QUEUE2_MUTEX_LOCK (queue);
2151 queue->segment_event_received = FALSE;
2152 queue->is_eos = FALSE;
2153 queue->unexpected = FALSE;
2154 queue->sinkresult = GST_FLOW_OK;
2155 queue->seeking = FALSE;
2156 GST_QUEUE2_MUTEX_UNLOCK (queue);
2158 gst_event_unref (event);
2163 if (GST_EVENT_IS_SERIALIZED (event)) {
2164 /* serialized events go in the queue */
2165 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->sinkresult, out_flushing);
2166 /* refuse more events on EOS */
2169 gst_queue2_locked_enqueue (queue, event, GST_QUEUE2_ITEM_TYPE_EVENT);
2170 GST_QUEUE2_MUTEX_UNLOCK (queue);
2172 /* non-serialized events are passed upstream. */
2173 gst_pad_push_event (queue->srcpad, event);
2183 GST_DEBUG_OBJECT (queue, "refusing event, we are flushing");
2184 GST_QUEUE2_MUTEX_UNLOCK (queue);
2185 gst_event_unref (event);
2190 GST_DEBUG_OBJECT (queue, "refusing event, we are EOS");
2191 GST_QUEUE2_MUTEX_UNLOCK (queue);
2192 gst_event_unref (event);
2198 gst_queue2_handle_sink_query (GstPad * pad, GstObject * parent,
2203 switch (GST_QUERY_TYPE (query)) {
2205 if (GST_QUERY_IS_SERIALIZED (query)) {
2206 GST_WARNING_OBJECT (pad, "unhandled serialized query");
2209 res = gst_pad_query_default (pad, parent, query);
2217 gst_queue2_is_empty (GstQueue2 * queue)
2219 /* never empty on EOS */
2223 if (!QUEUE_IS_USING_QUEUE (queue) && queue->current) {
2224 return queue->current->writing_pos <= queue->current->max_reading_pos;
2226 if (queue->queue.length == 0)
2234 gst_queue2_is_filled (GstQueue2 * queue)
2238 /* always filled on EOS */
2242 #define CHECK_FILLED(format,alt_max) ((queue->max_level.format) > 0 && \
2243 (queue->cur_level.format) >= ((alt_max) ? \
2244 MIN ((queue->max_level.format), (alt_max)) : (queue->max_level.format)))
2246 /* if using a ring buffer we're filled if all ring buffer space is used
2247 * _by the current range_ */
2248 if (QUEUE_IS_USING_RING_BUFFER (queue)) {
2249 guint64 rb_size = queue->ring_buffer_max_size;
2250 GST_DEBUG_OBJECT (queue,
2251 "max bytes %u, rb size %" G_GUINT64_FORMAT ", cur bytes %u",
2252 queue->max_level.bytes, rb_size, queue->cur_level.bytes);
2253 return CHECK_FILLED (bytes, rb_size);
2256 /* if using file, we're never filled if we don't have EOS */
2257 if (QUEUE_IS_USING_TEMP_FILE (queue))
2260 /* we are never filled when we have no buffers at all */
2261 if (queue->cur_level.buffers == 0)
2264 /* we are filled if one of the current levels exceeds the max */
2265 res = CHECK_FILLED (buffers, 0) || CHECK_FILLED (bytes, 0)
2266 || CHECK_FILLED (time, 0);
2268 /* if we need to, use the rate estimate to check against the max time we are
2269 * allowed to queue */
2270 if (queue->use_rate_estimate)
2271 res |= CHECK_FILLED (rate_time, 0);
2277 static GstFlowReturn
2278 gst_queue2_chain_buffer_or_buffer_list (GstQueue2 * queue,
2279 GstMiniObject * item, GstQueue2ItemType item_type)
2281 /* we have to lock the queue since we span threads */
2282 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->sinkresult, out_flushing);
2283 /* when we received EOS, we refuse more data */
2286 /* when we received unexpected from downstream, refuse more buffers */
2287 if (queue->unexpected)
2288 goto out_unexpected;
2290 /* while we didn't receive the newsegment, we're seeking and we skip data */
2294 if (!gst_queue2_wait_free_space (queue))
2297 /* put buffer in queue now */
2298 gst_queue2_locked_enqueue (queue, item, item_type);
2299 GST_QUEUE2_MUTEX_UNLOCK (queue);
2303 /* special conditions */
2306 GstFlowReturn ret = queue->sinkresult;
2308 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2309 "exit because task paused, reason: %s", gst_flow_get_name (ret));
2310 GST_QUEUE2_MUTEX_UNLOCK (queue);
2311 gst_mini_object_unref (item);
2317 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
2318 GST_QUEUE2_MUTEX_UNLOCK (queue);
2319 gst_mini_object_unref (item);
2321 return GST_FLOW_EOS;
2325 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are seeking");
2326 GST_QUEUE2_MUTEX_UNLOCK (queue);
2327 gst_mini_object_unref (item);
2333 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we received EOS");
2334 GST_QUEUE2_MUTEX_UNLOCK (queue);
2335 gst_mini_object_unref (item);
2337 return GST_FLOW_EOS;
2341 static GstFlowReturn
2342 gst_queue2_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
2346 queue = GST_QUEUE2 (parent);
2348 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "received buffer %p of "
2349 "size %" G_GSIZE_FORMAT ", time %" GST_TIME_FORMAT ", duration %"
2350 GST_TIME_FORMAT, buffer, gst_buffer_get_size (buffer),
2351 GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
2352 GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
2354 return gst_queue2_chain_buffer_or_buffer_list (queue,
2355 GST_MINI_OBJECT_CAST (buffer), GST_QUEUE2_ITEM_TYPE_BUFFER);
2358 static GstFlowReturn
2359 gst_queue2_chain_list (GstPad * pad, GstObject * parent,
2360 GstBufferList * buffer_list)
2364 queue = GST_QUEUE2 (parent);
2366 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2367 "received buffer list %p", buffer_list);
2369 return gst_queue2_chain_buffer_or_buffer_list (queue,
2370 GST_MINI_OBJECT_CAST (buffer_list), GST_QUEUE2_ITEM_TYPE_BUFFER_LIST);
2373 static GstMiniObject *
2374 gst_queue2_dequeue_on_eos (GstQueue2 * queue, GstQueue2ItemType * item_type)
2376 GstMiniObject *data;
2378 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "got EOS from downstream");
2380 /* stop pushing buffers, we dequeue all items until we see an item that we
2381 * can push again, which is EOS or SEGMENT. If there is nothing in the
2382 * queue we can push, we set a flag to make the sinkpad refuse more
2383 * buffers with an EOS return value until we receive something
2384 * pushable again or we get flushed. */
2385 while ((data = gst_queue2_locked_dequeue (queue, item_type))) {
2386 if (*item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
2387 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2388 "dropping EOS buffer %p", data);
2389 gst_buffer_unref (GST_BUFFER_CAST (data));
2390 } else if (*item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
2391 GstEvent *event = GST_EVENT_CAST (data);
2392 GstEventType type = GST_EVENT_TYPE (event);
2394 if (type == GST_EVENT_EOS || type == GST_EVENT_SEGMENT) {
2395 /* we found a pushable item in the queue, push it out */
2396 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2397 "pushing pushable event %s after EOS", GST_EVENT_TYPE_NAME (event));
2400 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2401 "dropping EOS event %p", event);
2402 gst_event_unref (event);
2403 } else if (*item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
2404 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2405 "dropping EOS buffer list %p", data);
2406 gst_buffer_list_unref (GST_BUFFER_LIST_CAST (data));
2409 /* no more items in the queue. Set the unexpected flag so that upstream
2410 * make us refuse any more buffers on the sinkpad. Since we will still
2411 * accept EOS and SEGMENT we return _FLOW_OK to the caller so that the
2412 * task function does not shut down. */
2413 queue->unexpected = TRUE;
2417 /* dequeue an item from the queue an push it downstream. This functions returns
2418 * the result of the push. */
2419 static GstFlowReturn
2420 gst_queue2_push_one (GstQueue2 * queue)
2422 GstFlowReturn result = GST_FLOW_OK;
2423 GstMiniObject *data;
2424 GstQueue2ItemType item_type;
2426 data = gst_queue2_locked_dequeue (queue, &item_type);
2431 GST_QUEUE2_MUTEX_UNLOCK (queue);
2433 if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER) {
2439 buffer = GST_BUFFER_CAST (data);
2441 caps = GST_BUFFER_CAPS (buffer);
2445 /* set caps before pushing the buffer so that core does not try to do
2446 * something fancy to check if this is possible. */
2447 if (caps && caps != GST_PAD_CAPS (queue->srcpad))
2448 gst_pad_set_caps (queue->srcpad, caps);
2451 result = gst_pad_push (queue->srcpad, buffer);
2453 /* need to check for srcresult here as well */
2454 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2455 if (result == GST_FLOW_EOS) {
2456 data = gst_queue2_dequeue_on_eos (queue, &item_type);
2459 /* Since we will still accept EOS and SEGMENT we return _FLOW_OK
2460 * to the caller so that the task function does not shut down */
2461 result = GST_FLOW_OK;
2463 } else if (item_type == GST_QUEUE2_ITEM_TYPE_EVENT) {
2464 GstEvent *event = GST_EVENT_CAST (data);
2465 GstEventType type = GST_EVENT_TYPE (event);
2467 gst_pad_push_event (queue->srcpad, event);
2469 /* if we're EOS, return EOS so that the task pauses. */
2470 if (type == GST_EVENT_EOS) {
2471 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2472 "pushed EOS event %p, return EOS", event);
2473 result = GST_FLOW_EOS;
2476 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2477 } else if (item_type == GST_QUEUE2_ITEM_TYPE_BUFFER_LIST) {
2478 GstBufferList *buffer_list;
2480 GstBuffer *first_buf;
2484 buffer_list = GST_BUFFER_LIST_CAST (data);
2487 first_buf = gst_buffer_list_get (buffer_list, 0);
2488 caps = (first_buf != NULL) ? GST_BUFFER_CAPS (first_buf) : NULL;
2490 /* set caps before pushing the buffer so that core does not try to do
2491 * something fancy to check if this is possible. */
2492 if (caps && caps != GST_PAD_CAPS (queue->srcpad))
2493 gst_pad_set_caps (queue->srcpad, caps);
2496 result = gst_pad_push_list (queue->srcpad, buffer_list);
2498 /* need to check for srcresult here as well */
2499 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2500 if (result == GST_FLOW_EOS) {
2501 data = gst_queue2_dequeue_on_eos (queue, &item_type);
2504 /* Since we will still accept EOS and SEGMENT we return _FLOW_OK
2505 * to the caller so that the task function does not shut down */
2506 result = GST_FLOW_OK;
2514 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2515 "exit because we have no item in the queue");
2516 return GST_FLOW_ERROR;
2520 GST_CAT_LOG_OBJECT (queue_dataflow, queue, "exit because we are flushing");
2521 return GST_FLOW_FLUSHING;
2525 /* called repeatedly with @pad as the source pad. This function should push out
2526 * data to the peer element. */
2528 gst_queue2_loop (GstPad * pad)
2533 queue = GST_QUEUE2 (GST_PAD_PARENT (pad));
2535 /* have to lock for thread-safety */
2536 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2538 if (gst_queue2_is_empty (queue)) {
2541 /* pause the timer while we wait. The fact that we are waiting does not mean
2542 * the byterate on the output pad is lower */
2543 if ((started = queue->out_timer_started))
2544 g_timer_stop (queue->out_timer);
2546 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue,
2547 "queue is empty, waiting for new data");
2549 /* Wait for data to be available, we could be unlocked because of a flush. */
2550 GST_QUEUE2_WAIT_ADD_CHECK (queue, queue->srcresult, out_flushing);
2552 while (gst_queue2_is_empty (queue));
2554 /* and continue if we were running before */
2556 g_timer_continue (queue->out_timer);
2558 ret = gst_queue2_push_one (queue);
2559 queue->srcresult = ret;
2560 queue->sinkresult = ret;
2561 if (ret != GST_FLOW_OK)
2564 GST_QUEUE2_MUTEX_UNLOCK (queue);
2571 gboolean eos = queue->is_eos;
2572 GstFlowReturn ret = queue->srcresult;
2574 gst_pad_pause_task (queue->srcpad);
2575 GST_QUEUE2_MUTEX_UNLOCK (queue);
2576 GST_CAT_LOG_OBJECT (queue_dataflow, queue,
2577 "pause task, reason: %s", gst_flow_get_name (queue->srcresult));
2578 /* let app know about us giving up if upstream is not expected to do so */
2579 /* EOS is already taken care of elsewhere */
2580 if (eos && (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS)) {
2581 GST_ELEMENT_ERROR (queue, STREAM, FAILED,
2582 (_("Internal data flow error.")),
2583 ("streaming task paused, reason %s (%d)",
2584 gst_flow_get_name (ret), ret));
2585 gst_pad_push_event (queue->srcpad, gst_event_new_eos ());
2592 gst_queue2_handle_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
2594 gboolean res = TRUE;
2595 GstQueue2 *queue = GST_QUEUE2 (parent);
2597 #ifndef GST_DISABLE_GST_DEBUG
2598 GST_CAT_DEBUG_OBJECT (queue_dataflow, queue, "got event %p (%s)",
2599 event, GST_EVENT_TYPE_NAME (event));
2602 switch (GST_EVENT_TYPE (event)) {
2603 case GST_EVENT_FLUSH_START:
2604 if (QUEUE_IS_USING_QUEUE (queue)) {
2605 /* just forward upstream */
2606 res = gst_pad_push_event (queue->sinkpad, event);
2608 /* now unblock the getrange function */
2609 GST_QUEUE2_MUTEX_LOCK (queue);
2610 GST_DEBUG_OBJECT (queue, "flushing");
2611 queue->srcresult = GST_FLOW_FLUSHING;
2612 GST_QUEUE2_SIGNAL_ADD (queue);
2613 GST_QUEUE2_MUTEX_UNLOCK (queue);
2615 /* when using a temp file, we eat the event */
2617 gst_event_unref (event);
2620 case GST_EVENT_FLUSH_STOP:
2621 if (QUEUE_IS_USING_QUEUE (queue)) {
2622 /* just forward upstream */
2623 res = gst_pad_push_event (queue->sinkpad, event);
2625 /* now unblock the getrange function */
2626 GST_QUEUE2_MUTEX_LOCK (queue);
2627 queue->srcresult = GST_FLOW_OK;
2628 GST_QUEUE2_MUTEX_UNLOCK (queue);
2630 /* when using a temp file, we eat the event */
2632 gst_event_unref (event);
2636 res = gst_pad_push_event (queue->sinkpad, event);
2644 gst_queue2_handle_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
2648 queue = GST_QUEUE2 (parent);
2650 switch (GST_QUERY_TYPE (query)) {
2651 case GST_QUERY_POSITION:
2656 if (!gst_pad_peer_query (queue->sinkpad, query))
2659 /* get peer position */
2660 gst_query_parse_position (query, &format, &peer_pos);
2662 /* FIXME: this code assumes that there's no discont in the queue */
2664 case GST_FORMAT_BYTES:
2665 peer_pos -= queue->cur_level.bytes;
2667 case GST_FORMAT_TIME:
2668 peer_pos -= queue->cur_level.time;
2671 GST_WARNING_OBJECT (queue, "dropping query in %s format, don't "
2672 "know how to adjust value", gst_format_get_name (format));
2675 /* set updated position */
2676 gst_query_set_position (query, format, peer_pos);
2679 case GST_QUERY_DURATION:
2681 GST_DEBUG_OBJECT (queue, "doing peer query");
2683 if (!gst_pad_peer_query (queue->sinkpad, query))
2686 GST_DEBUG_OBJECT (queue, "peer query success");
2689 case GST_QUERY_BUFFERING:
2693 GST_DEBUG_OBJECT (queue, "query buffering");
2695 /* FIXME - is this condition correct? what should ring buffer do? */
2696 if (QUEUE_IS_USING_QUEUE (queue)) {
2697 /* no temp file, just forward to the peer */
2698 if (!gst_pad_peer_query (queue->sinkpad, query))
2700 GST_DEBUG_OBJECT (queue, "buffering forwarded to peer");
2702 gint64 start, stop, range_start, range_stop;
2703 guint64 writing_pos;
2705 gint64 estimated_total, buffering_left;
2707 gboolean peer_res, is_buffering, is_eos;
2708 gdouble byte_in_rate, byte_out_rate;
2709 GstQueue2Range *queued_ranges;
2711 /* we need a current download region */
2712 if (queue->current == NULL)
2715 writing_pos = queue->current->writing_pos;
2716 byte_in_rate = queue->byte_in_rate;
2717 byte_out_rate = queue->byte_out_rate;
2718 is_buffering = queue->is_buffering;
2719 is_eos = queue->is_eos;
2720 percent = queue->buffering_percent;
2723 /* we're EOS, we know the duration in bytes now */
2725 duration = writing_pos;
2727 /* get duration of upstream in bytes */
2728 peer_res = gst_pad_peer_query_duration (queue->sinkpad,
2729 GST_FORMAT_BYTES, &duration);
2732 /* calculate remaining and total download time */
2733 if (peer_res && byte_in_rate > 0.0) {
2734 estimated_total = (duration * 1000) / byte_in_rate;
2735 buffering_left = ((duration - writing_pos) * 1000) / byte_in_rate;
2737 estimated_total = -1;
2738 buffering_left = -1;
2740 GST_DEBUG_OBJECT (queue, "estimated %" G_GINT64_FORMAT ", left %"
2741 G_GINT64_FORMAT, estimated_total, buffering_left);
2743 gst_query_parse_buffering_range (query, &format, NULL, NULL, NULL);
2746 case GST_FORMAT_PERCENT:
2747 /* we need duration */
2751 GST_DEBUG_OBJECT (queue,
2752 "duration %" G_GINT64_FORMAT ", writing %" G_GINT64_FORMAT,
2753 duration, writing_pos);
2756 /* get our available data relative to the duration */
2758 stop = GST_FORMAT_PERCENT_MAX * writing_pos / duration;
2762 case GST_FORMAT_BYTES:
2772 /* fill out the buffered ranges */
2773 for (queued_ranges = queue->ranges; queued_ranges;
2774 queued_ranges = queued_ranges->next) {
2776 case GST_FORMAT_PERCENT:
2777 if (duration == -1) {
2782 range_start = 100 * queued_ranges->offset / duration;
2783 range_stop = 100 * queued_ranges->writing_pos / duration;
2785 case GST_FORMAT_BYTES:
2786 range_start = queued_ranges->offset;
2787 range_stop = queued_ranges->writing_pos;
2794 if (range_start == range_stop)
2796 GST_DEBUG_OBJECT (queue,
2797 "range starting at %" G_GINT64_FORMAT " and finishing at %"
2798 G_GINT64_FORMAT, range_start, range_stop);
2799 gst_query_add_buffering_range (query, range_start, range_stop);
2802 gst_query_set_buffering_percent (query, is_buffering, percent);
2803 gst_query_set_buffering_range (query, format, start, stop,
2805 gst_query_set_buffering_stats (query, GST_BUFFERING_DOWNLOAD,
2806 byte_in_rate, byte_out_rate, buffering_left);
2810 case GST_QUERY_SCHEDULING:
2813 GstSchedulingFlags flags = 0;
2815 /* we can operate in pull mode when we are using a tempfile */
2816 pull_mode = !QUEUE_IS_USING_QUEUE (queue);
2819 flags |= GST_SCHEDULING_FLAG_SEEKABLE;
2820 gst_query_set_scheduling (query, flags, 0, -1, 0);
2822 gst_query_add_scheduling_mode (query, GST_PAD_MODE_PULL);
2823 gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
2827 /* peer handled other queries */
2828 if (!gst_pad_query_default (pad, parent, query))
2838 GST_DEBUG_OBJECT (queue, "failed peer query");
2844 gst_queue2_handle_query (GstElement * element, GstQuery * query)
2846 GstQueue2 *queue = GST_QUEUE2 (element);
2848 /* simply forward to the srcpad query function */
2849 return gst_queue2_handle_src_query (queue->srcpad, GST_OBJECT_CAST (element),
2854 gst_queue2_update_upstream_size (GstQueue2 * queue)
2856 gint64 upstream_size = -1;
2858 if (gst_pad_peer_query_duration (queue->sinkpad, GST_FORMAT_BYTES,
2860 GST_INFO_OBJECT (queue, "upstream size: %" G_GINT64_FORMAT, upstream_size);
2861 queue->upstream_size = upstream_size;
2865 static GstFlowReturn
2866 gst_queue2_get_range (GstPad * pad, GstObject * parent, guint64 offset,
2867 guint length, GstBuffer ** buffer)
2872 queue = GST_QUEUE2_CAST (parent);
2874 length = (length == -1) ? DEFAULT_BUFFER_SIZE : length;
2875 GST_QUEUE2_MUTEX_LOCK_CHECK (queue, queue->srcresult, out_flushing);
2876 offset = (offset == -1) ? queue->current->reading_pos : offset;
2878 GST_DEBUG_OBJECT (queue,
2879 "Getting range: offset %" G_GUINT64_FORMAT ", length %u", offset, length);
2881 /* catch any reads beyond the size of the file here to make sure queue2
2882 * doesn't send seek events beyond the size of the file upstream, since
2883 * that would confuse elements such as souphttpsrc and/or http servers.
2884 * Demuxers often just loop until EOS at the end of the file to figure out
2885 * when they've read all the end-headers or index chunks. */
2886 if (G_UNLIKELY (offset >= queue->upstream_size)) {
2887 gst_queue2_update_upstream_size (queue);
2888 if (queue->upstream_size > 0 && offset >= queue->upstream_size)
2889 goto out_unexpected;
2892 if (G_UNLIKELY (offset + length > queue->upstream_size)) {
2893 gst_queue2_update_upstream_size (queue);
2894 if (queue->upstream_size > 0 && offset + length >= queue->upstream_size) {
2895 length = queue->upstream_size - offset;
2896 GST_DEBUG_OBJECT (queue, "adjusting length downto %d", length);
2900 /* FIXME - function will block when the range is not yet available */
2901 ret = gst_queue2_create_read (queue, offset, length, buffer);
2902 GST_QUEUE2_MUTEX_UNLOCK (queue);
2909 ret = queue->srcresult;
2911 GST_DEBUG_OBJECT (queue, "we are flushing");
2912 GST_QUEUE2_MUTEX_UNLOCK (queue);
2917 GST_DEBUG_OBJECT (queue, "read beyond end of file");
2918 GST_QUEUE2_MUTEX_UNLOCK (queue);
2919 return GST_FLOW_EOS;
2923 /* sink currently only operates in push mode */
2925 gst_queue2_sink_activate_mode (GstPad * pad, GstObject * parent,
2926 GstPadMode mode, gboolean active)
2931 queue = GST_QUEUE2 (parent);
2934 case GST_PAD_MODE_PUSH:
2936 GST_QUEUE2_MUTEX_LOCK (queue);
2937 GST_DEBUG_OBJECT (queue, "activating push mode");
2938 queue->srcresult = GST_FLOW_OK;
2939 queue->sinkresult = GST_FLOW_OK;
2940 queue->is_eos = FALSE;
2941 queue->unexpected = FALSE;
2942 reset_rate_timer (queue);
2943 GST_QUEUE2_MUTEX_UNLOCK (queue);
2945 /* unblock chain function */
2946 GST_QUEUE2_MUTEX_LOCK (queue);
2947 GST_DEBUG_OBJECT (queue, "deactivating push mode");
2948 queue->srcresult = GST_FLOW_FLUSHING;
2949 queue->sinkresult = GST_FLOW_FLUSHING;
2950 gst_queue2_locked_flush (queue);
2951 GST_QUEUE2_MUTEX_UNLOCK (queue);
2962 /* src operating in push mode, we start a task on the source pad that pushes out
2963 * buffers from the queue */
2965 gst_queue2_src_activate_push (GstPad * pad, GstObject * parent, gboolean active)
2967 gboolean result = FALSE;
2970 queue = GST_QUEUE2 (parent);
2973 GST_QUEUE2_MUTEX_LOCK (queue);
2974 GST_DEBUG_OBJECT (queue, "activating push mode");
2975 queue->srcresult = GST_FLOW_OK;
2976 queue->sinkresult = GST_FLOW_OK;
2977 queue->is_eos = FALSE;
2978 queue->unexpected = FALSE;
2979 result = gst_pad_start_task (pad, (GstTaskFunction) gst_queue2_loop, pad);
2980 GST_QUEUE2_MUTEX_UNLOCK (queue);
2982 /* unblock loop function */
2983 GST_QUEUE2_MUTEX_LOCK (queue);
2984 GST_DEBUG_OBJECT (queue, "deactivating push mode");
2985 queue->srcresult = GST_FLOW_FLUSHING;
2986 queue->sinkresult = GST_FLOW_FLUSHING;
2987 /* the item add signal will unblock */
2988 GST_QUEUE2_SIGNAL_ADD (queue);
2989 GST_QUEUE2_MUTEX_UNLOCK (queue);
2991 /* step 2, make sure streaming finishes */
2992 result = gst_pad_stop_task (pad);
2998 /* pull mode, downstream will call our getrange function */
3000 gst_queue2_src_activate_pull (GstPad * pad, GstObject * parent, gboolean active)
3005 queue = GST_QUEUE2 (parent);
3008 GST_QUEUE2_MUTEX_LOCK (queue);
3009 if (!QUEUE_IS_USING_QUEUE (queue)) {
3010 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
3011 /* open the temp file now */
3012 result = gst_queue2_open_temp_location_file (queue);
3013 } else if (!queue->ring_buffer) {
3014 queue->ring_buffer = g_malloc (queue->ring_buffer_max_size);
3015 result = ! !queue->ring_buffer;
3020 GST_DEBUG_OBJECT (queue, "activating pull mode");
3021 init_ranges (queue);
3022 queue->srcresult = GST_FLOW_OK;
3023 queue->sinkresult = GST_FLOW_OK;
3024 queue->is_eos = FALSE;
3025 queue->unexpected = FALSE;
3026 queue->upstream_size = 0;
3028 GST_DEBUG_OBJECT (queue, "no temp file, cannot activate pull mode");
3029 /* this is not allowed, we cannot operate in pull mode without a temp
3031 queue->srcresult = GST_FLOW_FLUSHING;
3032 queue->sinkresult = GST_FLOW_FLUSHING;
3035 GST_QUEUE2_MUTEX_UNLOCK (queue);
3037 GST_QUEUE2_MUTEX_LOCK (queue);
3038 GST_DEBUG_OBJECT (queue, "deactivating pull mode");
3039 queue->srcresult = GST_FLOW_FLUSHING;
3040 queue->sinkresult = GST_FLOW_FLUSHING;
3041 /* this will unlock getrange */
3042 GST_QUEUE2_SIGNAL_ADD (queue);
3044 GST_QUEUE2_MUTEX_UNLOCK (queue);
3051 gst_queue2_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
3057 case GST_PAD_MODE_PULL:
3058 res = gst_queue2_src_activate_pull (pad, parent, active);
3060 case GST_PAD_MODE_PUSH:
3061 res = gst_queue2_src_activate_push (pad, parent, active);
3064 GST_LOG_OBJECT (pad, "unknown activation mode %d", mode);
3071 static GstStateChangeReturn
3072 gst_queue2_change_state (GstElement * element, GstStateChange transition)
3075 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
3077 queue = GST_QUEUE2 (element);
3079 switch (transition) {
3080 case GST_STATE_CHANGE_NULL_TO_READY:
3082 case GST_STATE_CHANGE_READY_TO_PAUSED:
3083 GST_QUEUE2_MUTEX_LOCK (queue);
3084 if (!QUEUE_IS_USING_QUEUE (queue)) {
3085 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
3086 if (!gst_queue2_open_temp_location_file (queue))
3087 ret = GST_STATE_CHANGE_FAILURE;
3089 if (queue->ring_buffer) {
3090 g_free (queue->ring_buffer);
3091 queue->ring_buffer = NULL;
3093 if (!(queue->ring_buffer = g_malloc (queue->ring_buffer_max_size)))
3094 ret = GST_STATE_CHANGE_FAILURE;
3096 init_ranges (queue);
3098 queue->segment_event_received = FALSE;
3099 queue->starting_segment = NULL;
3100 gst_event_replace (&queue->stream_start_event, NULL);
3101 GST_QUEUE2_MUTEX_UNLOCK (queue);
3103 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
3109 if (ret == GST_STATE_CHANGE_FAILURE)
3112 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
3114 if (ret == GST_STATE_CHANGE_FAILURE)
3117 switch (transition) {
3118 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
3120 case GST_STATE_CHANGE_PAUSED_TO_READY:
3121 GST_QUEUE2_MUTEX_LOCK (queue);
3122 if (!QUEUE_IS_USING_QUEUE (queue)) {
3123 if (QUEUE_IS_USING_TEMP_FILE (queue)) {
3124 gst_queue2_close_temp_location_file (queue);
3125 } else if (queue->ring_buffer) {
3126 g_free (queue->ring_buffer);
3127 queue->ring_buffer = NULL;
3129 clean_ranges (queue);
3131 if (queue->starting_segment != NULL) {
3132 gst_event_unref (queue->starting_segment);
3133 queue->starting_segment = NULL;
3135 gst_event_replace (&queue->stream_start_event, NULL);
3136 GST_QUEUE2_MUTEX_UNLOCK (queue);
3138 case GST_STATE_CHANGE_READY_TO_NULL:
3147 /* changing the capacity of the queue must wake up
3148 * the _chain function, it might have more room now
3149 * to store the buffer/event in the queue */
3150 #define QUEUE_CAPACITY_CHANGE(q)\
3151 GST_QUEUE2_SIGNAL_DEL (queue);
3153 /* Changing the minimum required fill level must
3154 * wake up the _loop function as it might now
3155 * be able to preceed.
3157 #define QUEUE_THRESHOLD_CHANGE(q)\
3158 GST_QUEUE2_SIGNAL_ADD (queue);
3161 gst_queue2_set_temp_template (GstQueue2 * queue, const gchar * template)
3165 /* the element must be stopped in order to do this */
3166 GST_OBJECT_LOCK (queue);
3167 state = GST_STATE (queue);
3168 if (state != GST_STATE_READY && state != GST_STATE_NULL)
3170 GST_OBJECT_UNLOCK (queue);
3172 /* set new location */
3173 g_free (queue->temp_template);
3174 queue->temp_template = g_strdup (template);
3181 GST_WARNING_OBJECT (queue, "setting temp-template property in wrong state");
3182 GST_OBJECT_UNLOCK (queue);
3187 gst_queue2_set_property (GObject * object,
3188 guint prop_id, const GValue * value, GParamSpec * pspec)
3190 GstQueue2 *queue = GST_QUEUE2 (object);
3192 /* someone could change levels here, and since this
3193 * affects the get/put funcs, we need to lock for safety. */
3194 GST_QUEUE2_MUTEX_LOCK (queue);
3197 case PROP_MAX_SIZE_BYTES:
3198 queue->max_level.bytes = g_value_get_uint (value);
3199 QUEUE_CAPACITY_CHANGE (queue);
3201 case PROP_MAX_SIZE_BUFFERS:
3202 queue->max_level.buffers = g_value_get_uint (value);
3203 QUEUE_CAPACITY_CHANGE (queue);
3205 case PROP_MAX_SIZE_TIME:
3206 queue->max_level.time = g_value_get_uint64 (value);
3207 /* set rate_time to the same value. We use an extra field in the level
3208 * structure so that we can easily access and compare it */
3209 queue->max_level.rate_time = queue->max_level.time;
3210 QUEUE_CAPACITY_CHANGE (queue);
3212 case PROP_USE_BUFFERING:
3213 queue->use_buffering = g_value_get_boolean (value);
3215 case PROP_USE_RATE_ESTIMATE:
3216 queue->use_rate_estimate = g_value_get_boolean (value);
3218 case PROP_LOW_PERCENT:
3219 queue->low_percent = g_value_get_int (value);
3221 case PROP_HIGH_PERCENT:
3222 queue->high_percent = g_value_get_int (value);
3224 case PROP_TEMP_TEMPLATE:
3225 gst_queue2_set_temp_template (queue, g_value_get_string (value));
3227 case PROP_TEMP_LOCATION:
3228 g_free (queue->temp_location);
3229 queue->temp_location = g_value_dup_string (value);
3230 /* you can set the property back to NULL to make it use the temp-tmpl
3232 queue->temp_location_set = queue->temp_location != NULL;
3234 case PROP_TEMP_REMOVE:
3235 queue->temp_remove = g_value_get_boolean (value);
3237 case PROP_RING_BUFFER_MAX_SIZE:
3238 queue->ring_buffer_max_size = g_value_get_uint64 (value);
3241 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3245 GST_QUEUE2_MUTEX_UNLOCK (queue);
3249 gst_queue2_get_property (GObject * object,
3250 guint prop_id, GValue * value, GParamSpec * pspec)
3252 GstQueue2 *queue = GST_QUEUE2 (object);
3254 GST_QUEUE2_MUTEX_LOCK (queue);
3257 case PROP_CUR_LEVEL_BYTES:
3258 g_value_set_uint (value, queue->cur_level.bytes);
3260 case PROP_CUR_LEVEL_BUFFERS:
3261 g_value_set_uint (value, queue->cur_level.buffers);
3263 case PROP_CUR_LEVEL_TIME:
3264 g_value_set_uint64 (value, queue->cur_level.time);
3266 case PROP_MAX_SIZE_BYTES:
3267 g_value_set_uint (value, queue->max_level.bytes);
3269 case PROP_MAX_SIZE_BUFFERS:
3270 g_value_set_uint (value, queue->max_level.buffers);
3272 case PROP_MAX_SIZE_TIME:
3273 g_value_set_uint64 (value, queue->max_level.time);
3275 case PROP_USE_BUFFERING:
3276 g_value_set_boolean (value, queue->use_buffering);
3278 case PROP_USE_RATE_ESTIMATE:
3279 g_value_set_boolean (value, queue->use_rate_estimate);
3281 case PROP_LOW_PERCENT:
3282 g_value_set_int (value, queue->low_percent);
3284 case PROP_HIGH_PERCENT:
3285 g_value_set_int (value, queue->high_percent);
3287 case PROP_TEMP_TEMPLATE:
3288 g_value_set_string (value, queue->temp_template);
3290 case PROP_TEMP_LOCATION:
3291 g_value_set_string (value, queue->temp_location);
3293 case PROP_TEMP_REMOVE:
3294 g_value_set_boolean (value, queue->temp_remove);
3296 case PROP_RING_BUFFER_MAX_SIZE:
3297 g_value_set_uint64 (value, queue->ring_buffer_max_size);
3300 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3304 GST_QUEUE2_MUTEX_UNLOCK (queue);