8d1d644ff0fdb8a8cd07f833205bec30c7630422
1 /* GStreamer
2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wim.taymans@chello.be>
4 * 2005 Wim Taymans <wim@fluendo.com>
5 *
6 * gstevent.c: GstEvent subsystem
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
22 */
24 /**
25 * SECTION:gstevent
26 * @short_description: Structure describing events that are passed up and down
27 * a pipeline
28 * @see_also: #GstPad, #GstElement
29 *
30 * The event class provides factory methods to construct events for sending
31 * and functions to query (parse) received events.
32 *
33 * Events are usually created with gst_event_new_*() which takes event-type
34 * specific parameters as arguments.
35 * To send an event application will usually use gst_element_send_event() and
36 * elements will use gst_pad_send_event() or gst_pad_push_event().
37 * The event should be unreffed with gst_event_unref() if it has not been sent.
38 *
39 * Events that have been received can be parsed with their respective
40 * gst_event_parse_*() functions. It is valid to pass %NULL for unwanted details.
41 *
42 * Events are passed between elements in parallel to the data stream. Some events
43 * are serialized with buffers, others are not. Some events only travel downstream,
44 * others only upstream. Some events can travel both upstream and downstream.
45 *
46 * The events are used to signal special conditions in the datastream such as
47 * EOS (end of stream) or the start of a new stream-segment.
48 * Events are also used to flush the pipeline of any pending data.
49 *
50 * Most of the event API is used inside plugins. Applications usually only
51 * construct and use seek events.
52 * To do that gst_event_new_seek() is used to create a seek event. It takes
53 * the needed parameters to specify seeking time and mode.
54 * <example>
55 * <title>performing a seek on a pipeline</title>
56 * <programlisting>
57 * GstEvent *event;
58 * gboolean result;
59 * ...
60 * // construct a seek event to play the media from second 2 to 5, flush
61 * // the pipeline to decrease latency.
62 * event = gst_event_new_seek (1.0,
63 * GST_FORMAT_TIME,
64 * GST_SEEK_FLAG_FLUSH,
65 * GST_SEEK_TYPE_SET, 2 * GST_SECOND,
66 * GST_SEEK_TYPE_SET, 5 * GST_SECOND);
67 * ...
68 * result = gst_element_send_event (pipeline, event);
69 * if (!result)
70 * g_warning ("seek failed");
71 * ...
72 * </programlisting>
73 * </example>
74 *
75 * Last reviewed on 2006-09-6 (0.10.10)
76 */
79 #include "gst_private.h"
80 #include <string.h> /* memcpy */
82 #include "gstinfo.h"
83 #include "gstevent.h"
84 #include "gstenumtypes.h"
85 #include "gstutils.h"
86 #include "gstquark.h"
88 #define GST_EVENT_SEQNUM(e) ((GstEvent*)e)->abidata.seqnum
90 static void gst_event_finalize (GstEvent * event);
91 static GstEvent *_gst_event_copy (GstEvent * event);
93 static GstMiniObjectClass *parent_class = NULL;
95 void
96 _gst_event_initialize (void)
97 {
98 g_type_class_ref (gst_event_get_type ());
99 g_type_class_ref (gst_seek_flags_get_type ());
100 g_type_class_ref (gst_seek_type_get_type ());
101 }
103 typedef struct
104 {
105 const gint type;
106 const gchar *name;
107 GQuark quark;
108 } GstEventQuarks;
110 static GstEventQuarks event_quarks[] = {
111 {GST_EVENT_UNKNOWN, "unknown", 0},
112 {GST_EVENT_FLUSH_START, "flush-start", 0},
113 {GST_EVENT_FLUSH_STOP, "flush-stop", 0},
114 {GST_EVENT_EOS, "eos", 0},
115 {GST_EVENT_NEWSEGMENT, "newsegment", 0},
116 {GST_EVENT_TAG, "tag", 0},
117 {GST_EVENT_BUFFERSIZE, "buffersize", 0},
118 {GST_EVENT_SINK_MESSAGE, "sink-message", 0},
119 {GST_EVENT_QOS, "qos", 0},
120 {GST_EVENT_SEEK, "seek", 0},
121 {GST_EVENT_NAVIGATION, "navigation", 0},
122 {GST_EVENT_LATENCY, "latency", 0},
123 {GST_EVENT_STEP, "step", 0},
124 {GST_EVENT_CUSTOM_UPSTREAM, "custom-upstream", 0},
125 {GST_EVENT_CUSTOM_DOWNSTREAM, "custom-downstream", 0},
126 {GST_EVENT_CUSTOM_DOWNSTREAM_OOB, "custom-downstream-oob", 0},
127 {GST_EVENT_CUSTOM_BOTH, "custom-both", 0},
128 {GST_EVENT_CUSTOM_BOTH_OOB, "custom-both-oob", 0},
130 {0, NULL, 0}
131 };
133 /**
134 * gst_event_type_get_name:
135 * @type: the event type
136 *
137 * Get a printable name for the given event type. Do not modify or free.
138 *
139 * Returns: a reference to the static name of the event.
140 */
141 const gchar *
142 gst_event_type_get_name (GstEventType type)
143 {
144 gint i;
146 for (i = 0; event_quarks[i].name; i++) {
147 if (type == event_quarks[i].type)
148 return event_quarks[i].name;
149 }
150 return "unknown";
151 }
153 /**
154 * gst_event_type_to_quark:
155 * @type: the event type
156 *
157 * Get the unique quark for the given event type.
158 *
159 * Returns: the quark associated with the event type
160 */
161 GQuark
162 gst_event_type_to_quark (GstEventType type)
163 {
164 gint i;
166 for (i = 0; event_quarks[i].name; i++) {
167 if (type == event_quarks[i].type)
168 return event_quarks[i].quark;
169 }
170 return 0;
171 }
173 /**
174 * gst_event_type_get_flags:
175 * @type: a #GstEventType
176 *
177 * Gets the #GstEventTypeFlags associated with @type.
178 *
179 * Returns: a #GstEventTypeFlags.
180 */
181 GstEventTypeFlags
182 gst_event_type_get_flags (GstEventType type)
183 {
184 GstEventTypeFlags ret;
186 ret = type & ((1 << GST_EVENT_TYPE_SHIFT) - 1);
188 return ret;
189 }
191 #define _do_init \
192 { \
193 gint i; \
194 \
195 for (i = 0; event_quarks[i].name; i++) { \
196 event_quarks[i].quark = g_quark_from_static_string (event_quarks[i].name); \
197 } \
198 }
200 G_DEFINE_TYPE_WITH_CODE (GstEvent, gst_event, GST_TYPE_MINI_OBJECT, _do_init);
202 static void
203 gst_event_class_init (GstEventClass * klass)
204 {
205 parent_class = g_type_class_peek_parent (klass);
207 klass->mini_object_class.copy = (GstMiniObjectCopyFunction) _gst_event_copy;
208 klass->mini_object_class.finalize =
209 (GstMiniObjectFinalizeFunction) gst_event_finalize;
210 }
212 static void
213 gst_event_init (GstEvent * event)
214 {
215 GST_EVENT_TIMESTAMP (event) = GST_CLOCK_TIME_NONE;
216 }
218 static void
219 gst_event_finalize (GstEvent * event)
220 {
221 g_return_if_fail (event != NULL);
222 g_return_if_fail (GST_IS_EVENT (event));
224 GST_CAT_LOG (GST_CAT_EVENT, "freeing event %p type %s", event,
225 GST_EVENT_TYPE_NAME (event));
227 if (GST_EVENT_SRC (event)) {
228 gst_object_unref (GST_EVENT_SRC (event));
229 GST_EVENT_SRC (event) = NULL;
230 }
231 if (event->structure) {
232 gst_structure_set_parent_refcount (event->structure, NULL);
233 gst_structure_free (event->structure);
234 }
236 /* GST_MINI_OBJECT_CLASS (parent_class)->finalize (GST_MINI_OBJECT (event)); */
237 }
239 static GstEvent *
240 _gst_event_copy (GstEvent * event)
241 {
242 GstEvent *copy;
244 copy = (GstEvent *) gst_mini_object_new (GST_TYPE_EVENT);
246 GST_EVENT_TYPE (copy) = GST_EVENT_TYPE (event);
247 GST_EVENT_TIMESTAMP (copy) = GST_EVENT_TIMESTAMP (event);
248 GST_EVENT_SEQNUM (copy) = GST_EVENT_SEQNUM (event);
250 if (GST_EVENT_SRC (event)) {
251 GST_EVENT_SRC (copy) = gst_object_ref (GST_EVENT_SRC (event));
252 }
253 if (event->structure) {
254 copy->structure = gst_structure_copy (event->structure);
255 gst_structure_set_parent_refcount (copy->structure,
256 ©->mini_object.refcount);
257 }
258 return copy;
259 }
261 static GstEvent *
262 gst_event_new (GstEventType type)
263 {
264 GstEvent *event;
266 event = (GstEvent *) gst_mini_object_new (GST_TYPE_EVENT);
268 GST_CAT_DEBUG (GST_CAT_EVENT, "creating new event %p %s %d", event,
269 gst_event_type_get_name (type), type);
271 event->type = type;
272 event->src = NULL;
273 event->structure = NULL;
274 GST_EVENT_SEQNUM (event) = gst_util_seqnum_next ();
276 return event;
277 }
279 /**
280 * gst_event_new_custom:
281 * @type: The type of the new event
282 * @structure: (transfer full): the structure for the event. The event will
283 * take ownership of the structure.
284 *
285 * Create a new custom-typed event. This can be used for anything not
286 * handled by other event-specific functions to pass an event to another
287 * element.
288 *
289 * Make sure to allocate an event type with the #GST_EVENT_MAKE_TYPE macro,
290 * assigning a free number and filling in the correct direction and
291 * serialization flags.
292 *
293 * New custom events can also be created by subclassing the event type if
294 * needed.
295 *
296 * Returns: (transfer full): the new custom event.
297 */
298 GstEvent *
299 gst_event_new_custom (GstEventType type, GstStructure * structure)
300 {
301 GstEvent *event;
303 /* structure must not have a parent */
304 if (structure)
305 g_return_val_if_fail (structure->parent_refcount == NULL, NULL);
307 event = gst_event_new (type);
308 if (structure) {
309 gst_structure_set_parent_refcount (structure, &event->mini_object.refcount);
310 event->structure = structure;
311 }
312 return event;
313 }
315 /**
316 * gst_event_get_structure:
317 * @event: The #GstEvent.
318 *
319 * Access the structure of the event.
320 *
321 * Returns: The structure of the event. The structure is still
322 * owned by the event, which means that you should not free it and
323 * that the pointer becomes invalid when you free the event.
324 *
325 * MT safe.
326 */
327 const GstStructure *
328 gst_event_get_structure (GstEvent * event)
329 {
330 g_return_val_if_fail (GST_IS_EVENT (event), NULL);
332 return event->structure;
333 }
335 /**
336 * gst_event_has_name:
337 * @event: The #GstEvent.
338 * @name: name to check
339 *
340 * Checks if @event has the given @name. This function is usually used to
341 * check the name of a custom event.
342 *
343 * Returns: %TRUE if @name matches the name of the event structure.
344 *
345 * Since: 0.10.20
346 */
347 gboolean
348 gst_event_has_name (GstEvent * event, const gchar * name)
349 {
350 g_return_val_if_fail (GST_IS_EVENT (event), FALSE);
352 if (event->structure == NULL)
353 return FALSE;
355 return gst_structure_has_name (event->structure, name);
356 }
358 /**
359 * gst_event_get_seqnum:
360 * @event: A #GstEvent.
361 *
362 * Retrieve the sequence number of a event.
363 *
364 * Events have ever-incrementing sequence numbers, which may also be set
365 * explicitly via gst_event_set_seqnum(). Sequence numbers are typically used to
366 * indicate that a event corresponds to some other set of events or messages,
367 * for example an EOS event corresponding to a SEEK event. It is considered good
368 * practice to make this correspondence when possible, though it is not
369 * required.
370 *
371 * Note that events and messages share the same sequence number incrementor;
372 * two events or messages will never have the same sequence number unless
373 * that correspondence was made explicitly.
374 *
375 * Returns: The event's sequence number.
376 *
377 * MT safe.
378 *
379 * Since: 0.10.22
380 */
381 guint32
382 gst_event_get_seqnum (GstEvent * event)
383 {
384 g_return_val_if_fail (GST_IS_EVENT (event), -1);
386 return GST_EVENT_SEQNUM (event);
387 }
389 /**
390 * gst_event_set_seqnum:
391 * @event: A #GstEvent.
392 * @seqnum: A sequence number.
393 *
394 * Set the sequence number of a event.
395 *
396 * This function might be called by the creator of a event to indicate that the
397 * event relates to other events or messages. See gst_event_get_seqnum() for
398 * more information.
399 *
400 * MT safe.
401 *
402 * Since: 0.10.22
403 */
404 void
405 gst_event_set_seqnum (GstEvent * event, guint32 seqnum)
406 {
407 g_return_if_fail (GST_IS_EVENT (event));
409 GST_EVENT_SEQNUM (event) = seqnum;
410 }
412 /* FIXME 0.11: It would be nice to have flush events
413 * that don't reset the running time in the sinks
414 */
416 /**
417 * gst_event_new_flush_start:
418 *
419 * Allocate a new flush start event. The flush start event can be sent
420 * upstream and downstream and travels out-of-bounds with the dataflow.
421 *
422 * It marks pads as being flushing and will make them return
423 * #GST_FLOW_WRONG_STATE when used for data flow with gst_pad_push(),
424 * gst_pad_chain(), gst_pad_alloc_buffer(), gst_pad_get_range() and
425 * gst_pad_pull_range(). Any event (except a #GST_EVENT_FLUSH_STOP) received
426 * on a flushing pad will return %FALSE immediately.
427 *
428 * Elements should unlock any blocking functions and exit their streaming
429 * functions as fast as possible when this event is received.
430 *
431 * This event is typically generated after a seek to flush out all queued data
432 * in the pipeline so that the new media is played as soon as possible.
433 *
434 * Returns: (transfer full): a new flush start event.
435 */
436 GstEvent *
437 gst_event_new_flush_start (void)
438 {
439 return gst_event_new (GST_EVENT_FLUSH_START);
440 }
442 /**
443 * gst_event_new_flush_stop:
444 *
445 * Allocate a new flush stop event. The flush stop event can be sent
446 * upstream and downstream and travels serialized with the dataflow.
447 * It is typically sent after sending a FLUSH_START event to make the
448 * pads accept data again.
449 *
450 * Elements can process this event synchronized with the dataflow since
451 * the preceeding FLUSH_START event stopped the dataflow.
452 *
453 * This event is typically generated to complete a seek and to resume
454 * dataflow.
455 *
456 * Returns: (transfer full): a new flush stop event.
457 */
458 GstEvent *
459 gst_event_new_flush_stop (void)
460 {
461 return gst_event_new (GST_EVENT_FLUSH_STOP);
462 }
464 /**
465 * gst_event_new_eos:
466 *
467 * Create a new EOS event. The eos event can only travel downstream
468 * synchronized with the buffer flow. Elements that receive the EOS
469 * event on a pad can return #GST_FLOW_UNEXPECTED as a #GstFlowReturn
470 * when data after the EOS event arrives.
471 *
472 * The EOS event will travel down to the sink elements in the pipeline
473 * which will then post the #GST_MESSAGE_EOS on the bus after they have
474 * finished playing any buffered data.
475 *
476 * When all sinks have posted an EOS message, an EOS message is
477 * forwarded to the application.
478 *
479 * The EOS event itself will not cause any state transitions of the pipeline.
480 *
481 * Returns: (transfer full): the new EOS event.
482 */
483 GstEvent *
484 gst_event_new_eos (void)
485 {
486 return gst_event_new (GST_EVENT_EOS);
487 }
489 /**
490 * gst_event_new_new_segment:
491 * @update: is this segment an update to a previous one
492 * @rate: a new rate for playback
493 * @format: The format of the segment values
494 * @start: the start value of the segment
495 * @stop: the stop value of the segment
496 * @position: stream position
497 *
498 * Allocate a new newsegment event with the given format/values tripplets
499 *
500 * This method calls gst_event_new_new_segment_full() passing a default
501 * value of 1.0 for applied_rate
502 *
503 * Returns: (transfer full): a new newsegment event.
504 */
505 GstEvent *
506 gst_event_new_new_segment (gboolean update, gdouble rate, GstFormat format,
507 gint64 start, gint64 stop, gint64 position)
508 {
509 return gst_event_new_new_segment_full (update, rate, 1.0, format, start,
510 stop, position);
511 }
513 /**
514 * gst_event_parse_new_segment:
515 * @event: The event to query
516 * @update: (out): A pointer to the update flag of the segment
517 * @rate: (out): A pointer to the rate of the segment
518 * @format: (out): A pointer to the format of the newsegment values
519 * @start: (out): A pointer to store the start value in
520 * @stop: (out): A pointer to store the stop value in
521 * @position: (out): A pointer to store the stream time in
522 *
523 * Get the update flag, rate, format, start, stop and position in the
524 * newsegment event. In general, gst_event_parse_new_segment_full() should
525 * be used instead of this, to also retrieve the applied_rate value of the
526 * segment. See gst_event_new_new_segment_full() for a full description
527 * of the newsegment event.
528 */
529 void
530 gst_event_parse_new_segment (GstEvent * event, gboolean * update,
531 gdouble * rate, GstFormat * format, gint64 * start,
532 gint64 * stop, gint64 * position)
533 {
534 gst_event_parse_new_segment_full (event, update, rate, NULL, format, start,
535 stop, position);
536 }
538 /**
539 * gst_event_new_new_segment_full:
540 * @update: Whether this segment is an update to a previous one
541 * @rate: A new rate for playback
542 * @applied_rate: The rate factor which has already been applied
543 * @format: The format of the segment values
544 * @start: The start value of the segment
545 * @stop: The stop value of the segment
546 * @position: stream position
547 *
548 * Allocate a new newsegment event with the given format/values triplets.
549 *
550 * The newsegment event marks the range of buffers to be processed. All
551 * data not within the segment range is not to be processed. This can be
552 * used intelligently by plugins to apply more efficient methods of skipping
553 * unneeded data. The valid range is expressed with the @start and @stop
554 * values.
555 *
556 * The position value of the segment is used in conjunction with the start
557 * value to convert the buffer timestamps into the stream time. This is
558 * usually done in sinks to report the current stream_time.
559 * @position represents the stream_time of a buffer carrying a timestamp of
560 * @start. @position cannot be -1.
561 *
562 * @start cannot be -1, @stop can be -1. If there
563 * is a valid @stop given, it must be greater or equal the @start, including
564 * when the indicated playback @rate is < 0.
565 *
566 * The @applied_rate value provides information about any rate adjustment that
567 * has already been made to the timestamps and content on the buffers of the
568 * stream. (@rate * @applied_rate) should always equal the rate that has been
569 * requested for playback. For example, if an element has an input segment
570 * with intended playback @rate of 2.0 and applied_rate of 1.0, it can adjust
571 * incoming timestamps and buffer content by half and output a newsegment event
572 * with @rate of 1.0 and @applied_rate of 2.0
573 *
574 * After a newsegment event, the buffer stream time is calculated with:
575 *
576 * position + (TIMESTAMP(buf) - start) * ABS (rate * applied_rate)
577 *
578 * Returns: (transfer full): a new newsegment event.
579 *
580 * Since: 0.10.6
581 */
582 GstEvent *
583 gst_event_new_new_segment_full (gboolean update, gdouble rate,
584 gdouble applied_rate, GstFormat format, gint64 start, gint64 stop,
585 gint64 position)
586 {
587 GstEvent *event;
588 GstStructure *structure;
590 g_return_val_if_fail (rate != 0.0, NULL);
591 g_return_val_if_fail (applied_rate != 0.0, NULL);
593 if (format == GST_FORMAT_TIME) {
594 GST_CAT_INFO (GST_CAT_EVENT,
595 "creating newsegment update %d, rate %lf, format GST_FORMAT_TIME, "
596 "start %" GST_TIME_FORMAT ", stop %" GST_TIME_FORMAT
597 ", position %" GST_TIME_FORMAT,
598 update, rate, GST_TIME_ARGS (start),
599 GST_TIME_ARGS (stop), GST_TIME_ARGS (position));
600 } else {
601 GST_CAT_INFO (GST_CAT_EVENT,
602 "creating newsegment update %d, rate %lf, format %s, "
603 "start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT ", position %"
604 G_GINT64_FORMAT, update, rate, gst_format_get_name (format), start,
605 stop, position);
606 }
608 g_return_val_if_fail (position != -1, NULL);
609 g_return_val_if_fail (start != -1, NULL);
610 if (stop != -1)
611 g_return_val_if_fail (start <= stop, NULL);
613 structure = gst_structure_id_new (GST_QUARK (EVENT_NEWSEGMENT),
614 GST_QUARK (UPDATE), G_TYPE_BOOLEAN, update,
615 GST_QUARK (RATE), G_TYPE_DOUBLE, rate,
616 GST_QUARK (APPLIED_RATE), G_TYPE_DOUBLE, applied_rate,
617 GST_QUARK (FORMAT), GST_TYPE_FORMAT, format,
618 GST_QUARK (START), G_TYPE_INT64, start,
619 GST_QUARK (STOP), G_TYPE_INT64, stop,
620 GST_QUARK (POSITION), G_TYPE_INT64, position, NULL);
621 event = gst_event_new_custom (GST_EVENT_NEWSEGMENT, structure);
623 return event;
624 }
626 /**
627 * gst_event_parse_new_segment_full:
628 * @event: The event to query
629 * @update: (out): A pointer to the update flag of the segment
630 * @rate: (out): A pointer to the rate of the segment
631 * @applied_rate: (out): A pointer to the applied_rate of the segment
632 * @format: (out): A pointer to the format of the newsegment values
633 * @start: (out): A pointer to store the start value in
634 * @stop: (out): A pointer to store the stop value in
635 * @position: (out): A pointer to store the stream time in
636 *
637 * Get the update, rate, applied_rate, format, start, stop and
638 * position in the newsegment event. See gst_event_new_new_segment_full()
639 * for a full description of the newsegment event.
640 *
641 * Since: 0.10.6
642 */
643 void
644 gst_event_parse_new_segment_full (GstEvent * event, gboolean * update,
645 gdouble * rate, gdouble * applied_rate, GstFormat * format,
646 gint64 * start, gint64 * stop, gint64 * position)
647 {
648 const GstStructure *structure;
650 g_return_if_fail (GST_IS_EVENT (event));
651 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT);
653 structure = event->structure;
654 if (G_LIKELY (update))
655 *update =
656 g_value_get_boolean (gst_structure_id_get_value (structure,
657 GST_QUARK (UPDATE)));
658 if (G_LIKELY (rate))
659 *rate =
660 g_value_get_double (gst_structure_id_get_value (structure,
661 GST_QUARK (RATE)));
662 if (G_LIKELY (applied_rate))
663 *applied_rate =
664 g_value_get_double (gst_structure_id_get_value (structure,
665 GST_QUARK (APPLIED_RATE)));
666 if (G_LIKELY (format))
667 *format = (GstFormat)
668 g_value_get_enum (gst_structure_id_get_value (structure,
669 GST_QUARK (FORMAT)));
670 if (G_LIKELY (start))
671 *start =
672 g_value_get_int64 (gst_structure_id_get_value (structure,
673 GST_QUARK (START)));
674 if (G_LIKELY (stop))
675 *stop =
676 g_value_get_int64 (gst_structure_id_get_value (structure,
677 GST_QUARK (STOP)));
678 if (G_LIKELY (position))
679 *position =
680 g_value_get_int64 (gst_structure_id_get_value (structure,
681 GST_QUARK (POSITION)));
682 }
684 /**
685 * gst_event_new_tag:
686 * @taglist: (transfer full): metadata list. The event will take ownership
687 * of the taglist.
688 *
689 * Generates a metadata tag event from the given @taglist.
690 *
691 * Returns: (transfer full): a new #GstEvent
692 */
693 GstEvent *
694 gst_event_new_tag (GstTagList * taglist)
695 {
696 g_return_val_if_fail (taglist != NULL, NULL);
698 return gst_event_new_custom (GST_EVENT_TAG, (GstStructure *) taglist);
699 }
701 /**
702 * gst_event_parse_tag:
703 * @event: a tag event
704 * @taglist: (out) (transfer none): pointer to metadata list
705 *
706 * Parses a tag @event and stores the results in the given @taglist location.
707 * No reference to the taglist will be returned, it remains valid only until
708 * the @event is freed. Don't modify or free the taglist, make a copy if you
709 * want to modify it or store it for later use.
710 */
711 void
712 gst_event_parse_tag (GstEvent * event, GstTagList ** taglist)
713 {
714 g_return_if_fail (GST_IS_EVENT (event));
715 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_TAG);
717 if (taglist)
718 *taglist = (GstTagList *) event->structure;
719 }
721 /* buffersize event */
722 /**
723 * gst_event_new_buffer_size:
724 * @format: buffer format
725 * @minsize: minimum buffer size
726 * @maxsize: maximum buffer size
727 * @async: thread behavior
728 *
729 * Create a new buffersize event. The event is sent downstream and notifies
730 * elements that they should provide a buffer of the specified dimensions.
731 *
732 * When the @async flag is set, a thread boundary is preferred.
733 *
734 * Returns: (transfer full): a new #GstEvent
735 */
736 GstEvent *
737 gst_event_new_buffer_size (GstFormat format, gint64 minsize,
738 gint64 maxsize, gboolean async)
739 {
740 GstEvent *event;
741 GstStructure *structure;
743 GST_CAT_INFO (GST_CAT_EVENT,
744 "creating buffersize format %s, minsize %" G_GINT64_FORMAT
745 ", maxsize %" G_GINT64_FORMAT ", async %d", gst_format_get_name (format),
746 minsize, maxsize, async);
748 structure = gst_structure_id_new (GST_QUARK (EVENT_BUFFER_SIZE),
749 GST_QUARK (FORMAT), GST_TYPE_FORMAT, format,
750 GST_QUARK (MINSIZE), G_TYPE_INT64, minsize,
751 GST_QUARK (MAXSIZE), G_TYPE_INT64, maxsize,
752 GST_QUARK (ASYNC), G_TYPE_BOOLEAN, async, NULL);
753 event = gst_event_new_custom (GST_EVENT_BUFFERSIZE, structure);
755 return event;
756 }
758 /**
759 * gst_event_parse_buffer_size:
760 * @event: The event to query
761 * @format: (out): A pointer to store the format in
762 * @minsize: (out): A pointer to store the minsize in
763 * @maxsize: (out): A pointer to store the maxsize in
764 * @async: (out): A pointer to store the async-flag in
765 *
766 * Get the format, minsize, maxsize and async-flag in the buffersize event.
767 */
768 void
769 gst_event_parse_buffer_size (GstEvent * event, GstFormat * format,
770 gint64 * minsize, gint64 * maxsize, gboolean * async)
771 {
772 const GstStructure *structure;
774 g_return_if_fail (GST_IS_EVENT (event));
775 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_BUFFERSIZE);
777 structure = event->structure;
778 if (format)
779 *format = (GstFormat)
780 g_value_get_enum (gst_structure_id_get_value (structure,
781 GST_QUARK (FORMAT)));
782 if (minsize)
783 *minsize =
784 g_value_get_int64 (gst_structure_id_get_value (structure,
785 GST_QUARK (MINSIZE)));
786 if (maxsize)
787 *maxsize =
788 g_value_get_int64 (gst_structure_id_get_value (structure,
789 GST_QUARK (MAXSIZE)));
790 if (async)
791 *async =
792 g_value_get_boolean (gst_structure_id_get_value (structure,
793 GST_QUARK (ASYNC)));
794 }
796 /**
797 * gst_event_new_qos:
798 * @proportion: the proportion of the qos message
799 * @diff: The time difference of the last Clock sync
800 * @timestamp: The timestamp of the buffer
801 *
802 * Allocate a new qos event with the given values. This function calls
803 * gst_event_new_qos_full() with the type set to #GST_QOS_TYPE_OVERFLOW
804 * when diff is negative (buffers are in time) and #GST_QOS_TYPE_UNDERFLOW
805 * when @diff is positive (buffers are late).
806 *
807 * Returns: (transfer full): a new QOS event.
808 */
809 GstEvent *
810 gst_event_new_qos (gdouble proportion, GstClockTimeDiff diff,
811 GstClockTime timestamp)
812 {
813 GstQOSType type;
815 if (diff <= 0)
816 type = GST_QOS_TYPE_OVERFLOW;
817 else
818 type = GST_QOS_TYPE_UNDERFLOW;
820 return gst_event_new_qos_full (type, proportion, diff, timestamp);
821 }
823 /**
824 * gst_event_new_qos_full:
825 * @type: the QoS type
826 * @proportion: the proportion of the qos message
827 * @diff: The time difference of the last Clock sync
828 * @timestamp: The timestamp of the buffer
829 *
830 * Allocate a new qos event with the given values.
831 * The QOS event is generated in an element that wants an upstream
832 * element to either reduce or increase its rate because of
833 * high/low CPU load or other resource usage such as network performance or
834 * throttling. Typically sinks generate these events for each buffer
835 * they receive.
836 *
837 * @type indicates the reason for the QoS event. #GST_QOS_TYPE_OVERFLOW is
838 * used when a buffer arrived in time or when the sink cannot keep up with
839 * the upstream datarate. #GST_QOS_TYPE_UNDERFLOW is when the sink is not
840 * receiving buffers fast enough and thus has to drop late buffers.
841 * #GST_QOS_TYPE_THROTTLE is used when the datarate is artificially limited
842 * by the application, for example to reduce power consumption.
843 *
844 * @proportion indicates the real-time performance of the streaming in the
845 * element that generated the QoS event (usually the sink). The value is
846 * generally computed based on more long term statistics about the streams
847 * timestamps compared to the clock.
848 * A value < 1.0 indicates that the upstream element is producing data faster
849 * than real-time. A value > 1.0 indicates that the upstream element is not
850 * producing data fast enough. 1.0 is the ideal @proportion value. The
851 * proportion value can safely be used to lower or increase the quality of
852 * the element.
853 *
854 * @diff is the difference against the clock in running time of the last
855 * buffer that caused the element to generate the QOS event. A negative value
856 * means that the buffer with @timestamp arrived in time. A positive value
857 * indicates how late the buffer with @timestamp was. When throttling is
858 * enabled, @diff will be set to the requested throttling interval.
859 *
860 * @timestamp is the timestamp of the last buffer that cause the element
861 * to generate the QOS event. It is expressed in running time and thus an ever
862 * increasing value.
863 *
864 * The upstream element can use the @diff and @timestamp values to decide
865 * whether to process more buffers. For possitive @diff, all buffers with
866 * timestamp <= @timestamp + @diff will certainly arrive late in the sink
867 * as well. A (negative) @diff value so that @timestamp + @diff would yield a
868 * result smaller than 0 is not allowed.
869 *
870 * The application can use general event probes to intercept the QoS
871 * event and implement custom application specific QoS handling.
872 *
873 * Returns: (transfer full): a new QOS event.
874 *
875 * Since: 0.10.33
876 */
877 GstEvent *
878 gst_event_new_qos_full (GstQOSType type, gdouble proportion,
879 GstClockTimeDiff diff, GstClockTime timestamp)
880 {
881 GstEvent *event;
882 GstStructure *structure;
884 /* diff must be positive or timestamp + diff must be positive */
885 g_return_val_if_fail (diff >= 0 || -diff <= timestamp, NULL);
887 GST_CAT_INFO (GST_CAT_EVENT,
888 "creating qos type %d, proportion %lf, diff %" G_GINT64_FORMAT
889 ", timestamp %" GST_TIME_FORMAT, type, proportion,
890 diff, GST_TIME_ARGS (timestamp));
892 structure = gst_structure_id_new (GST_QUARK (EVENT_QOS),
893 GST_QUARK (TYPE), GST_TYPE_QOS_TYPE, type,
894 GST_QUARK (PROPORTION), G_TYPE_DOUBLE, proportion,
895 GST_QUARK (DIFF), G_TYPE_INT64, diff,
896 GST_QUARK (TIMESTAMP), G_TYPE_UINT64, timestamp, NULL);
897 event = gst_event_new_custom (GST_EVENT_QOS, structure);
899 return event;
900 }
902 /**
903 * gst_event_parse_qos:
904 * @event: The event to query
905 * @proportion: (out): A pointer to store the proportion in
906 * @diff: (out): A pointer to store the diff in
907 * @timestamp: (out): A pointer to store the timestamp in
908 *
909 * Get the proportion, diff and timestamp in the qos event. See
910 * gst_event_new_qos() for more information about the different QoS values.
911 */
912 void
913 gst_event_parse_qos (GstEvent * event, gdouble * proportion,
914 GstClockTimeDiff * diff, GstClockTime * timestamp)
915 {
916 gst_event_parse_qos_full (event, NULL, proportion, diff, timestamp);
917 }
919 /**
920 * gst_event_parse_qos_full:
921 * @event: The event to query
922 * @type: (out): A pointer to store the QoS type in
923 * @proportion: (out): A pointer to store the proportion in
924 * @diff: (out): A pointer to store the diff in
925 * @timestamp: (out): A pointer to store the timestamp in
926 *
927 * Get the type, proportion, diff and timestamp in the qos event. See
928 * gst_event_new_qos_full() for more information about the different QoS values.
929 *
930 * Since: 0.10.33
931 */
932 void
933 gst_event_parse_qos_full (GstEvent * event, GstQOSType * type,
934 gdouble * proportion, GstClockTimeDiff * diff, GstClockTime * timestamp)
935 {
936 const GstStructure *structure;
938 g_return_if_fail (GST_IS_EVENT (event));
939 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_QOS);
941 structure = event->structure;
942 if (type)
943 *type = (GstQOSType)
944 g_value_get_enum (gst_structure_id_get_value (structure,
945 GST_QUARK (TYPE)));
946 if (proportion)
947 *proportion =
948 g_value_get_double (gst_structure_id_get_value (structure,
949 GST_QUARK (PROPORTION)));
950 if (diff)
951 *diff =
952 g_value_get_int64 (gst_structure_id_get_value (structure,
953 GST_QUARK (DIFF)));
954 if (timestamp)
955 *timestamp =
956 g_value_get_uint64 (gst_structure_id_get_value (structure,
957 GST_QUARK (TIMESTAMP)));
958 }
960 /**
961 * gst_event_new_seek:
962 * @rate: The new playback rate
963 * @format: The format of the seek values
964 * @flags: The optional seek flags
965 * @start_type: The type and flags for the new start position
966 * @start: The value of the new start position
967 * @stop_type: The type and flags for the new stop position
968 * @stop: The value of the new stop position
969 *
970 * Allocate a new seek event with the given parameters.
971 *
972 * The seek event configures playback of the pipeline between @start to @stop
973 * at the speed given in @rate, also called a playback segment.
974 * The @start and @stop values are expressed in @format.
975 *
976 * A @rate of 1.0 means normal playback rate, 2.0 means double speed.
977 * Negatives values means backwards playback. A value of 0.0 for the
978 * rate is not allowed and should be accomplished instead by PAUSING the
979 * pipeline.
980 *
981 * A pipeline has a default playback segment configured with a start
982 * position of 0, a stop position of -1 and a rate of 1.0. The currently
983 * configured playback segment can be queried with #GST_QUERY_SEGMENT.
984 *
985 * @start_type and @stop_type specify how to adjust the currently configured
986 * start and stop fields in playback segment. Adjustments can be made relative
987 * or absolute to the last configured values. A type of #GST_SEEK_TYPE_NONE
988 * means that the position should not be updated.
989 *
990 * When the rate is positive and @start has been updated, playback will start
991 * from the newly configured start position.
992 *
993 * For negative rates, playback will start from the newly configured stop
994 * position (if any). If the stop position if updated, it must be different from
995 * -1 for negative rates.
996 *
997 * It is not possible to seek relative to the current playback position, to do
998 * this, PAUSE the pipeline, query the current playback position with
999 * #GST_QUERY_POSITION and update the playback segment current position with a
1000 * #GST_SEEK_TYPE_SET to the desired position.
1001 *
1002 * Returns: (transfer full): a new seek event.
1003 */
1004 GstEvent *
1005 gst_event_new_seek (gdouble rate, GstFormat format, GstSeekFlags flags,
1006 GstSeekType start_type, gint64 start, GstSeekType stop_type, gint64 stop)
1007 {
1008 GstEvent *event;
1009 GstStructure *structure;
1011 g_return_val_if_fail (rate != 0.0, NULL);
1013 if (format == GST_FORMAT_TIME) {
1014 GST_CAT_INFO (GST_CAT_EVENT,
1015 "creating seek rate %lf, format TIME, flags %d, "
1016 "start_type %d, start %" GST_TIME_FORMAT ", "
1017 "stop_type %d, stop %" GST_TIME_FORMAT,
1018 rate, flags, start_type, GST_TIME_ARGS (start),
1019 stop_type, GST_TIME_ARGS (stop));
1020 } else {
1021 GST_CAT_INFO (GST_CAT_EVENT,
1022 "creating seek rate %lf, format %s, flags %d, "
1023 "start_type %d, start %" G_GINT64_FORMAT ", "
1024 "stop_type %d, stop %" G_GINT64_FORMAT,
1025 rate, gst_format_get_name (format), flags, start_type, start, stop_type,
1026 stop);
1027 }
1029 structure = gst_structure_id_new (GST_QUARK (EVENT_SEEK),
1030 GST_QUARK (RATE), G_TYPE_DOUBLE, rate,
1031 GST_QUARK (FORMAT), GST_TYPE_FORMAT, format,
1032 GST_QUARK (FLAGS), GST_TYPE_SEEK_FLAGS, flags,
1033 GST_QUARK (CUR_TYPE), GST_TYPE_SEEK_TYPE, start_type,
1034 GST_QUARK (CUR), G_TYPE_INT64, start,
1035 GST_QUARK (STOP_TYPE), GST_TYPE_SEEK_TYPE, stop_type,
1036 GST_QUARK (STOP), G_TYPE_INT64, stop, NULL);
1037 event = gst_event_new_custom (GST_EVENT_SEEK, structure);
1039 return event;
1040 }
1042 /**
1043 * gst_event_parse_seek:
1044 * @event: a seek event
1045 * @rate: (out): result location for the rate
1046 * @format: (out): result location for the stream format
1047 * @flags: (out): result location for the #GstSeekFlags
1048 * @start_type: (out): result location for the #GstSeekType of the start position
1049 * @start: (out): result location for the start postion expressed in @format
1050 * @stop_type: (out): result location for the #GstSeekType of the stop position
1051 * @stop: (out): result location for the stop postion expressed in @format
1052 *
1053 * Parses a seek @event and stores the results in the given result locations.
1054 */
1055 void
1056 gst_event_parse_seek (GstEvent * event, gdouble * rate,
1057 GstFormat * format, GstSeekFlags * flags, GstSeekType * start_type,
1058 gint64 * start, GstSeekType * stop_type, gint64 * stop)
1059 {
1060 const GstStructure *structure;
1062 g_return_if_fail (GST_IS_EVENT (event));
1063 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SEEK);
1065 structure = event->structure;
1066 if (rate)
1067 *rate =
1068 g_value_get_double (gst_structure_id_get_value (structure,
1069 GST_QUARK (RATE)));
1070 if (format)
1071 *format = (GstFormat)
1072 g_value_get_enum (gst_structure_id_get_value (structure,
1073 GST_QUARK (FORMAT)));
1074 if (flags)
1075 *flags = (GstSeekFlags)
1076 g_value_get_flags (gst_structure_id_get_value (structure,
1077 GST_QUARK (FLAGS)));
1078 if (start_type)
1079 *start_type = (GstSeekType)
1080 g_value_get_enum (gst_structure_id_get_value (structure,
1081 GST_QUARK (CUR_TYPE)));
1082 if (start)
1083 *start =
1084 g_value_get_int64 (gst_structure_id_get_value (structure,
1085 GST_QUARK (CUR)));
1086 if (stop_type)
1087 *stop_type = (GstSeekType)
1088 g_value_get_enum (gst_structure_id_get_value (structure,
1089 GST_QUARK (STOP_TYPE)));
1090 if (stop)
1091 *stop =
1092 g_value_get_int64 (gst_structure_id_get_value (structure,
1093 GST_QUARK (STOP)));
1094 }
1096 /**
1097 * gst_event_new_navigation:
1098 * @structure: (transfer full): description of the event. The event will take
1099 * ownership of the structure.
1100 *
1101 * Create a new navigation event from the given description.
1102 *
1103 * Returns: (transfer full): a new #GstEvent
1104 */
1105 GstEvent *
1106 gst_event_new_navigation (GstStructure * structure)
1107 {
1108 g_return_val_if_fail (structure != NULL, NULL);
1110 return gst_event_new_custom (GST_EVENT_NAVIGATION, structure);
1111 }
1113 /**
1114 * gst_event_new_latency:
1115 * @latency: the new latency value
1116 *
1117 * Create a new latency event. The event is sent upstream from the sinks and
1118 * notifies elements that they should add an additional @latency to the
1119 * running time before synchronising against the clock.
1120 *
1121 * The latency is mostly used in live sinks and is always expressed in
1122 * the time format.
1123 *
1124 * Returns: (transfer full): a new #GstEvent
1125 *
1126 * Since: 0.10.12
1127 */
1128 GstEvent *
1129 gst_event_new_latency (GstClockTime latency)
1130 {
1131 GstEvent *event;
1132 GstStructure *structure;
1134 GST_CAT_INFO (GST_CAT_EVENT,
1135 "creating latency event %" GST_TIME_FORMAT, GST_TIME_ARGS (latency));
1137 structure = gst_structure_id_new (GST_QUARK (EVENT_LATENCY),
1138 GST_QUARK (LATENCY), G_TYPE_UINT64, latency, NULL);
1139 event = gst_event_new_custom (GST_EVENT_LATENCY, structure);
1141 return event;
1142 }
1144 /**
1145 * gst_event_parse_latency:
1146 * @event: The event to query
1147 * @latency: (out): A pointer to store the latency in.
1148 *
1149 * Get the latency in the latency event.
1150 *
1151 * Since: 0.10.12
1152 */
1153 void
1154 gst_event_parse_latency (GstEvent * event, GstClockTime * latency)
1155 {
1156 g_return_if_fail (GST_IS_EVENT (event));
1157 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_LATENCY);
1159 if (latency)
1160 *latency =
1161 g_value_get_uint64 (gst_structure_id_get_value (event->structure,
1162 GST_QUARK (LATENCY)));
1163 }
1165 /**
1166 * gst_event_new_step:
1167 * @format: the format of @amount
1168 * @amount: the amount of data to step
1169 * @rate: the step rate
1170 * @flush: flushing steps
1171 * @intermediate: intermediate steps
1172 *
1173 * Create a new step event. The purpose of the step event is to instruct a sink
1174 * to skip @amount (expressed in @format) of media. It can be used to implement
1175 * stepping through the video frame by frame or for doing fast trick modes.
1176 *
1177 * A rate of <= 0.0 is not allowed. Pause the pipeline, for the effect of rate
1178 * = 0.0 or first reverse the direction of playback using a seek event to get
1179 * the same effect as rate < 0.0.
1180 *
1181 * The @flush flag will clear any pending data in the pipeline before starting
1182 * the step operation.
1183 *
1184 * The @intermediate flag instructs the pipeline that this step operation is
1185 * part of a larger step operation.
1186 *
1187 * Returns: (transfer full): a new #GstEvent
1188 *
1189 * Since: 0.10.24
1190 */
1191 GstEvent *
1192 gst_event_new_step (GstFormat format, guint64 amount, gdouble rate,
1193 gboolean flush, gboolean intermediate)
1194 {
1195 GstEvent *event;
1196 GstStructure *structure;
1198 g_return_val_if_fail (rate > 0.0, NULL);
1200 GST_CAT_INFO (GST_CAT_EVENT, "creating step event");
1202 structure = gst_structure_id_new (GST_QUARK (EVENT_STEP),
1203 GST_QUARK (FORMAT), GST_TYPE_FORMAT, format,
1204 GST_QUARK (AMOUNT), G_TYPE_UINT64, amount,
1205 GST_QUARK (RATE), G_TYPE_DOUBLE, rate,
1206 GST_QUARK (FLUSH), G_TYPE_BOOLEAN, flush,
1207 GST_QUARK (INTERMEDIATE), G_TYPE_BOOLEAN, intermediate, NULL);
1208 event = gst_event_new_custom (GST_EVENT_STEP, structure);
1210 return event;
1211 }
1213 /**
1214 * gst_event_parse_step:
1215 * @event: The event to query
1216 * @format: (out) (allow-none): a pointer to store the format in
1217 * @amount: (out) (allow-none): a pointer to store the amount in
1218 * @rate: (out) (allow-none): a pointer to store the rate in
1219 * @flush: (out) (allow-none): a pointer to store the flush boolean in
1220 * @intermediate: (out) (allow-none): a pointer to store the intermediate
1221 * boolean in
1222 *
1223 * Parse the step event.
1224 *
1225 * Since: 0.10.24
1226 */
1227 void
1228 gst_event_parse_step (GstEvent * event, GstFormat * format, guint64 * amount,
1229 gdouble * rate, gboolean * flush, gboolean * intermediate)
1230 {
1231 const GstStructure *structure;
1233 g_return_if_fail (GST_IS_EVENT (event));
1234 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_STEP);
1236 structure = event->structure;
1237 if (format)
1238 *format =
1239 (GstFormat) g_value_get_enum (gst_structure_id_get_value (structure,
1240 GST_QUARK (FORMAT)));
1241 if (amount)
1242 *amount = g_value_get_uint64 (gst_structure_id_get_value (structure,
1243 GST_QUARK (AMOUNT)));
1244 if (rate)
1245 *rate = g_value_get_double (gst_structure_id_get_value (structure,
1246 GST_QUARK (RATE)));
1247 if (flush)
1248 *flush = g_value_get_boolean (gst_structure_id_get_value (structure,
1249 GST_QUARK (FLUSH)));
1250 if (intermediate)
1251 *intermediate = g_value_get_boolean (gst_structure_id_get_value (structure,
1252 GST_QUARK (INTERMEDIATE)));
1253 }
1255 /**
1256 * gst_event_new_sink_message:
1257 * @msg: (transfer none): the #GstMessage to be posted
1258 *
1259 * Create a new sink-message event. The purpose of the sink-message event is
1260 * to instruct a sink to post the message contained in the event synchronized
1261 * with the stream.
1262 *
1263 * Returns: (transfer full): a new #GstEvent
1264 *
1265 * Since: 0.10.26
1266 */
1267 /* FIXME 0.11: take ownership of msg for consistency? */
1268 GstEvent *
1269 gst_event_new_sink_message (GstMessage * msg)
1270 {
1271 GstEvent *event;
1272 GstStructure *structure;
1274 g_return_val_if_fail (msg != NULL, NULL);
1276 GST_CAT_INFO (GST_CAT_EVENT, "creating sink-message event");
1278 structure = gst_structure_id_new (GST_QUARK (EVENT_SINK_MESSAGE),
1279 GST_QUARK (MESSAGE), GST_TYPE_MESSAGE, msg, NULL);
1280 event = gst_event_new_custom (GST_EVENT_SINK_MESSAGE, structure);
1282 return event;
1283 }
1285 /**
1286 * gst_event_parse_sink_message:
1287 * @event: The event to query
1288 * @msg: (out) (transfer full): a pointer to store the #GstMessage in.
1289 *
1290 * Parse the sink-message event. Unref @msg after usage.
1291 *
1292 * Since: 0.10.26
1293 */
1294 void
1295 gst_event_parse_sink_message (GstEvent * event, GstMessage ** msg)
1296 {
1297 g_return_if_fail (GST_IS_EVENT (event));
1298 g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SINK_MESSAGE);
1300 if (msg)
1301 *msg =
1302 GST_MESSAGE (gst_value_dup_mini_object (gst_structure_id_get_value
1303 (event->structure, GST_QUARK (MESSAGE))));
1304 }