2 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
4 * gstmessage.h: Header for GstMessage subsystem
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
22 #ifndef __GST_MESSAGE_H__
23 #define __GST_MESSAGE_H__
27 typedef struct _GstMessage GstMessage;
31 * @GST_MESSAGE_UNKNOWN: an undefined message
32 * @GST_MESSAGE_EOS: end-of-stream reached in a pipeline. The application will
33 * only receive this message in the PLAYING state and every time it sets a
34 * pipeline to PLAYING that is in the EOS state. The application can perform a
35 * flushing seek in the pipeline, which will undo the EOS state again.
36 * @GST_MESSAGE_ERROR: an error occurred. When the application receives an error
37 * message it should stop playback of the pipeline and not assume that more
38 * data will be played.
39 * @GST_MESSAGE_WARNING: a warning occurred.
40 * @GST_MESSAGE_INFO: an info message occurred
41 * @GST_MESSAGE_TAG: a tag was found.
42 * @GST_MESSAGE_BUFFERING: the pipeline is buffering. When the application
43 * receives a buffering message in the PLAYING state for a non-live pipeline it
44 * must PAUSE the pipeline until the buffering completes, when the percentage
45 * field in the message is 100%. For live pipelines, no action must be
46 * performed and the buffering percentage can be used to inform the user about
48 * @GST_MESSAGE_STATE_CHANGED: a state change happened
49 * @GST_MESSAGE_STATE_DIRTY: an element changed state in a streaming thread.
50 * This message is deprecated.
51 * @GST_MESSAGE_STEP_DONE: a stepping operation finished.
52 * @GST_MESSAGE_CLOCK_PROVIDE: an element notifies its capability of providing
53 * a clock. This message is used internally and
54 * never forwarded to the application.
55 * @GST_MESSAGE_CLOCK_LOST: The current clock as selected by the pipeline became
56 * unusable. The pipeline will select a new clock on
57 * the next PLAYING state change. The application
58 * should set the pipeline to PAUSED and back to
59 * PLAYING when this message is received.
60 * @GST_MESSAGE_NEW_CLOCK: a new clock was selected in the pipeline.
61 * @GST_MESSAGE_STRUCTURE_CHANGE: the structure of the pipeline changed. This
62 * message is used internally and never forwarded to the application.
63 * @GST_MESSAGE_STREAM_STATUS: status about a stream, emitted when it starts,
64 * stops, errors, etc..
65 * @GST_MESSAGE_APPLICATION: message posted by the application, possibly
66 * via an application-specific element.
67 * @GST_MESSAGE_ELEMENT: element-specific message, see the specific element's
69 * @GST_MESSAGE_SEGMENT_START: pipeline started playback of a segment. This
70 * message is used internally and never forwarded to the application.
71 * @GST_MESSAGE_SEGMENT_DONE: pipeline completed playback of a segment. This
72 * message is forwarded to the application after all elements that posted
73 * @GST_MESSAGE_SEGMENT_START posted a GST_MESSAGE_SEGMENT_DONE message.
74 * @GST_MESSAGE_DURATION_CHANGED: The duration of a pipeline changed. The
75 * application can get the new duration with a duration query.
76 * @GST_MESSAGE_ASYNC_START: Posted by elements when they start an ASYNC
77 * #GstStateChange. This message is not forwarded to the application but is used
79 * @GST_MESSAGE_ASYNC_DONE: Posted by elements when they complete an ASYNC
80 * #GstStateChange. The application will only receive this message from the toplevel
82 * @GST_MESSAGE_LATENCY: Posted by elements when their latency changes. The
83 * application should recalculate and distribute a new latency.
84 * @GST_MESSAGE_REQUEST_STATE: Posted by elements when they want the pipeline to
85 * change state. This message is a suggestion to the application which can
86 * decide to perform the state change on (part of) the pipeline.
87 * @GST_MESSAGE_STEP_START: A stepping operation was started.
88 * @GST_MESSAGE_QOS: A buffer was dropped or an element changed its processing
89 * strategy for Quality of Service reasons.
90 * @GST_MESSAGE_PROGRESS: A progress message.
91 * @GST_MESSAGE_TOC: A new table of contents (TOC) was found or previously found TOC
93 * @GST_MESSAGE_RESET_TIME: Message to request resetting the pipeline's
94 * running time from the pipeline. This is an internal message which
95 * applications will likely never receive.
96 * @GST_MESSAGE_STREAM_START: Message indicating start of a new stream. Useful
97 * e.g. when using playbin in gapless playback mode, to get notified when
98 * the next title actually starts playing (which will be some time after
99 * the URI for the next title has been set).
100 * @GST_MESSAGE_NEED_CONTEXT: Message indicating that an element wants a specific context (Since 1.2)
101 * @GST_MESSAGE_HAVE_CONTEXT: Message indicating that an element created a context (Since 1.2)
102 * @GST_MESSAGE_EXTENDED: Message is an extended message type (see below).
103 * These extended message IDs can't be used directly with mask-based API
104 * like gst_bus_poll() or gst_bus_timed_pop_filtered(), but you can still
105 * filter for GST_MESSAGE_EXTENDED and then check the result for the
106 * specific type. (Since 1.4)
107 * @GST_MESSAGE_DEVICE_ADDED: Message indicating a #GstDevice was added to
108 * a #GstDeviceMonitor (Since 1.4)
109 * @GST_MESSAGE_DEVICE_REMOVED: Message indicating a #GstDevice was removed
110 * from a #GstDeviceMonitor (Since 1.4)
111 * @GST_MESSAGE_ANY: mask for all of the above messages.
113 * The different message types that are available.
115 /* NOTE: keep in sync with quark registration in gstmessage.c
116 * NOTE: keep GST_MESSAGE_ANY a valid gint to avoid compiler warnings.
118 /* FIXME: 2.0: Make it NOT flags, just a regular 1,2,3,4.. enumeration */
121 GST_MESSAGE_UNKNOWN = 0,
122 GST_MESSAGE_EOS = (1 << 0),
123 GST_MESSAGE_ERROR = (1 << 1),
124 GST_MESSAGE_WARNING = (1 << 2),
125 GST_MESSAGE_INFO = (1 << 3),
126 GST_MESSAGE_TAG = (1 << 4),
127 GST_MESSAGE_BUFFERING = (1 << 5),
128 GST_MESSAGE_STATE_CHANGED = (1 << 6),
129 GST_MESSAGE_STATE_DIRTY = (1 << 7),
130 GST_MESSAGE_STEP_DONE = (1 << 8),
131 GST_MESSAGE_CLOCK_PROVIDE = (1 << 9),
132 GST_MESSAGE_CLOCK_LOST = (1 << 10),
133 GST_MESSAGE_NEW_CLOCK = (1 << 11),
134 GST_MESSAGE_STRUCTURE_CHANGE = (1 << 12),
135 GST_MESSAGE_STREAM_STATUS = (1 << 13),
136 GST_MESSAGE_APPLICATION = (1 << 14),
137 GST_MESSAGE_ELEMENT = (1 << 15),
138 GST_MESSAGE_SEGMENT_START = (1 << 16),
139 GST_MESSAGE_SEGMENT_DONE = (1 << 17),
140 GST_MESSAGE_DURATION_CHANGED = (1 << 18),
141 GST_MESSAGE_LATENCY = (1 << 19),
142 GST_MESSAGE_ASYNC_START = (1 << 20),
143 GST_MESSAGE_ASYNC_DONE = (1 << 21),
144 GST_MESSAGE_REQUEST_STATE = (1 << 22),
145 GST_MESSAGE_STEP_START = (1 << 23),
146 GST_MESSAGE_QOS = (1 << 24),
147 GST_MESSAGE_PROGRESS = (1 << 25),
148 GST_MESSAGE_TOC = (1 << 26),
149 GST_MESSAGE_RESET_TIME = (1 << 27),
150 GST_MESSAGE_STREAM_START = (1 << 28),
151 GST_MESSAGE_NEED_CONTEXT = (1 << 29),
152 GST_MESSAGE_HAVE_CONTEXT = (1 << 30),
153 GST_MESSAGE_EXTENDED = (1 << 31),
154 GST_MESSAGE_DEVICE_ADDED = GST_MESSAGE_EXTENDED + 1,
155 GST_MESSAGE_DEVICE_REMOVED = GST_MESSAGE_EXTENDED + 2,
159 #include <gst/gstminiobject.h>
160 #include <gst/gstobject.h>
161 #include <gst/gstelement.h>
162 #include <gst/gsttaglist.h>
163 #include <gst/gststructure.h>
164 #include <gst/gstquery.h>
165 #include <gst/gsttoc.h>
166 #include <gst/gstdevice.h>
168 #define GST_TYPE_MESSAGE (gst_message_get_type())
169 #define GST_IS_MESSAGE(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_MESSAGE))
170 #define GST_MESSAGE_CAST(obj) ((GstMessage*)(obj))
171 #define GST_MESSAGE(obj) (GST_MESSAGE_CAST(obj))
173 /* the lock is used to handle the synchronous handling of messages,
174 * the emiting thread is block until the handling thread processed
175 * the message using this mutex/cond pair */
176 #define GST_MESSAGE_GET_LOCK(message) (&GST_MESSAGE_CAST(message)->lock)
177 #define GST_MESSAGE_LOCK(message) g_mutex_lock(GST_MESSAGE_GET_LOCK(message))
178 #define GST_MESSAGE_UNLOCK(message) g_mutex_unlock(GST_MESSAGE_GET_LOCK(message))
179 #define GST_MESSAGE_GET_COND(message) (&GST_MESSAGE_CAST(message)->cond)
180 #define GST_MESSAGE_WAIT(message) g_cond_wait(GST_MESSAGE_GET_COND(message),GST_MESSAGE_GET_LOCK(message))
181 #define GST_MESSAGE_SIGNAL(message) g_cond_signal(GST_MESSAGE_GET_COND(message))
185 * @message: a #GstMessage
187 * Get the #GstMessageType of @message.
189 #define GST_MESSAGE_TYPE(message) (GST_MESSAGE_CAST(message)->type)
191 * GST_MESSAGE_TYPE_NAME:
192 * @message: a #GstMessage
194 * Get a constant string representation of the #GstMessageType of @message.
196 #define GST_MESSAGE_TYPE_NAME(message) gst_message_type_get_name(GST_MESSAGE_TYPE(message))
198 * GST_MESSAGE_TIMESTAMP:
199 * @message: a #GstMessage
201 * Get the timestamp of @message. This is the timestamp when the message
204 #define GST_MESSAGE_TIMESTAMP(message) (GST_MESSAGE_CAST(message)->timestamp)
207 * @message: a #GstMessage
209 * Get the object that posted @message.
211 #define GST_MESSAGE_SRC(message) (GST_MESSAGE_CAST(message)->src)
214 * GST_MESSAGE_SEQNUM:
215 * @message: a #GstMessage
217 * Get the sequence number of @message.
219 #define GST_MESSAGE_SEQNUM(message) (GST_MESSAGE_CAST(message)->seqnum)
222 * GST_MESSAGE_SRC_NAME:
223 * @message: a #GstMessage
225 * Get the name of the object that posted @message. Returns "(NULL)" if
226 * the message has no source object set.
228 #define GST_MESSAGE_SRC_NAME(message) (GST_MESSAGE_SRC(message) ? \
229 GST_OBJECT_NAME (GST_MESSAGE_SRC(message)) : "(NULL)")
232 * GstStructureChangeType:
233 * @GST_STRUCTURE_CHANGE_TYPE_PAD_LINK: Pad linking is starting or done.
234 * @GST_STRUCTURE_CHANGE_TYPE_PAD_UNLINK: Pad unlinking is starting or done.
236 * The type of a %GST_MESSAGE_STRUCTURE_CHANGE.
239 GST_STRUCTURE_CHANGE_TYPE_PAD_LINK = 0,
240 GST_STRUCTURE_CHANGE_TYPE_PAD_UNLINK = 1
241 } GstStructureChangeType;
244 * GstStreamStatusType:
245 * @GST_STREAM_STATUS_TYPE_CREATE: A new thread need to be created.
246 * @GST_STREAM_STATUS_TYPE_ENTER: a thread entered its loop function
247 * @GST_STREAM_STATUS_TYPE_LEAVE: a thread left its loop function
248 * @GST_STREAM_STATUS_TYPE_DESTROY: a thread is destroyed
249 * @GST_STREAM_STATUS_TYPE_START: a thread is started
250 * @GST_STREAM_STATUS_TYPE_PAUSE: a thread is paused
251 * @GST_STREAM_STATUS_TYPE_STOP: a thread is stopped
253 * The type of a %GST_MESSAGE_STREAM_STATUS. The stream status messages inform the
254 * application of new streaming threads and their status.
257 GST_STREAM_STATUS_TYPE_CREATE = 0,
258 GST_STREAM_STATUS_TYPE_ENTER = 1,
259 GST_STREAM_STATUS_TYPE_LEAVE = 2,
260 GST_STREAM_STATUS_TYPE_DESTROY = 3,
262 GST_STREAM_STATUS_TYPE_START = 8,
263 GST_STREAM_STATUS_TYPE_PAUSE = 9,
264 GST_STREAM_STATUS_TYPE_STOP = 10
265 } GstStreamStatusType;
269 * @GST_PROGRESS_TYPE_START: A new task started.
270 * @GST_PROGRESS_TYPE_CONTINUE: A task completed and a new one continues.
271 * @GST_PROGRESS_TYPE_COMPLETE: A task completed.
272 * @GST_PROGRESS_TYPE_CANCELED: A task was canceled.
273 * @GST_PROGRESS_TYPE_ERROR: A task caused an error. An error message is also
276 * The type of a %GST_MESSAGE_PROGRESS. The progress messages inform the
277 * application of the status of asynchronous tasks.
280 GST_PROGRESS_TYPE_START = 0,
281 GST_PROGRESS_TYPE_CONTINUE = 1,
282 GST_PROGRESS_TYPE_COMPLETE = 2,
283 GST_PROGRESS_TYPE_CANCELED = 3,
284 GST_PROGRESS_TYPE_ERROR = 4
289 * @mini_object: the parent structure
290 * @type: the #GstMessageType of the message
291 * @timestamp: the timestamp of the message
292 * @src: the src of the message
293 * @seqnum: the sequence number of the message
299 GstMiniObject mini_object;
301 /*< public > *//* with COW */
307 /*< private >*//* with MESSAGE_LOCK */
308 GMutex lock; /* lock and cond for async delivery */
312 GType gst_message_get_type (void);
314 const gchar* gst_message_type_get_name (GstMessageType type);
315 GQuark gst_message_type_to_quark (GstMessageType type);
320 * @msg: the message to ref
322 * Convenience macro to increase the reference count of the message.
324 * Returns: @msg (for convenience when doing assignments)
326 #ifdef _FOOL_GTK_DOC_
327 G_INLINE_FUNC GstMessage * gst_message_ref (GstMessage * msg);
330 static inline GstMessage *
331 gst_message_ref (GstMessage * msg)
333 return (GstMessage *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (msg));
338 * @msg: the message to unref
340 * Convenience macro to decrease the reference count of the message, possibly
343 #ifdef _FOOL_GTK_DOC_
344 G_INLINE_FUNC void gst_message_unref (GstMessage * msg);
348 gst_message_unref (GstMessage * msg)
350 gst_mini_object_unref (GST_MINI_OBJECT_CAST (msg));
356 * @msg: the message to copy
358 * Creates a copy of the message. Returns a copy of the message.
360 * Returns: (transfer full): a new copy of @msg.
364 #ifdef _FOOL_GTK_DOC_
365 G_INLINE_FUNC GstMessage * gst_message_copy (const GstMessage * msg);
368 static inline GstMessage *
369 gst_message_copy (const GstMessage * msg)
371 return GST_MESSAGE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (msg)));
375 * gst_message_is_writable:
376 * @msg: a #GstMessage
378 * Tests if you can safely write into a message's structure or validly
379 * modify the seqnum and timestamp fields.
381 #define gst_message_is_writable(msg) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (msg))
383 * gst_message_make_writable:
384 * @msg: (transfer full): the message to make writable
386 * Checks if a message is writable. If not, a writable copy is made and
389 * Returns: (transfer full): a message (possibly a duplicate) that is writable.
393 #define gst_message_make_writable(msg) GST_MESSAGE_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (msg)))
395 * gst_message_replace:
396 * @old_message: (inout) (transfer full): pointer to a pointer to a #GstMessage
398 * @new_message: (allow-none) (transfer none): pointer to a #GstMessage that will
399 * replace the message pointed to by @old_message.
401 * Modifies a pointer to a #GstMessage to point to a different #GstMessage. The
402 * modification is done atomically (so this is useful for ensuring thread safety
403 * in some cases), and the reference counts are updated appropriately (the old
404 * message is unreffed, the new one is reffed).
406 * Either @new_message or the #GstMessage pointed to by @old_message may be NULL.
408 * Returns: TRUE if @new_message was different from @old_message
410 #ifdef _FOOL_GTK_DOC_
411 G_INLINE_FUNC gboolean gst_message_replace (GstMessage **old_message, GstMessage *new_message);
414 static inline gboolean
415 gst_message_replace (GstMessage **old_message, GstMessage *new_message)
417 return gst_mini_object_replace ((GstMiniObject **) old_message, (GstMiniObject *) new_message);
421 /* custom messages */
422 GstMessage * gst_message_new_custom (GstMessageType type,
424 GstStructure * structure) G_GNUC_MALLOC;
426 gst_message_get_structure (GstMessage *message);
428 gboolean gst_message_has_name (GstMessage *message, const gchar *name);
430 /* identifiers for events and messages */
431 guint32 gst_message_get_seqnum (GstMessage *message);
432 void gst_message_set_seqnum (GstMessage *message, guint32 seqnum);
435 GstMessage * gst_message_new_eos (GstObject * src) G_GNUC_MALLOC;
439 GstMessage * gst_message_new_error (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
440 void gst_message_parse_error (GstMessage *message, GError **gerror, gchar **debug);
443 GstMessage * gst_message_new_warning (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
444 void gst_message_parse_warning (GstMessage *message, GError **gerror, gchar **debug);
447 GstMessage * gst_message_new_info (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
448 void gst_message_parse_info (GstMessage *message, GError **gerror, gchar **debug);
451 GstMessage * gst_message_new_tag (GstObject * src, GstTagList * tag_list) G_GNUC_MALLOC;
452 void gst_message_parse_tag (GstMessage *message, GstTagList **tag_list);
455 GstMessage * gst_message_new_buffering (GstObject * src, gint percent) G_GNUC_MALLOC;
456 void gst_message_parse_buffering (GstMessage *message, gint *percent);
457 void gst_message_set_buffering_stats (GstMessage *message, GstBufferingMode mode,
458 gint avg_in, gint avg_out,
459 gint64 buffering_left);
460 void gst_message_parse_buffering_stats (GstMessage *message, GstBufferingMode *mode,
461 gint *avg_in, gint *avg_out,
462 gint64 *buffering_left);
465 GstMessage * gst_message_new_state_changed (GstObject * src, GstState oldstate,
466 GstState newstate, GstState pending) G_GNUC_MALLOC;
467 void gst_message_parse_state_changed (GstMessage *message, GstState *oldstate,
468 GstState *newstate, GstState *pending);
471 GstMessage * gst_message_new_state_dirty (GstObject * src) G_GNUC_MALLOC;
474 GstMessage * gst_message_new_step_done (GstObject * src, GstFormat format, guint64 amount,
475 gdouble rate, gboolean flush, gboolean intermediate,
476 guint64 duration, gboolean eos) G_GNUC_MALLOC;
477 void gst_message_parse_step_done (GstMessage * message, GstFormat *format, guint64 *amount,
478 gdouble *rate, gboolean *flush, gboolean *intermediate,
479 guint64 *duration, gboolean *eos);
481 GstMessage * gst_message_new_clock_provide (GstObject * src, GstClock *clock, gboolean ready) G_GNUC_MALLOC;
482 void gst_message_parse_clock_provide (GstMessage *message, GstClock **clock,
486 GstMessage * gst_message_new_clock_lost (GstObject * src, GstClock *clock) G_GNUC_MALLOC;
487 void gst_message_parse_clock_lost (GstMessage *message, GstClock **clock);
490 GstMessage * gst_message_new_new_clock (GstObject * src, GstClock *clock) G_GNUC_MALLOC;
491 void gst_message_parse_new_clock (GstMessage *message, GstClock **clock);
494 GstMessage * gst_message_new_application (GstObject * src, GstStructure * structure) G_GNUC_MALLOC;
497 GstMessage * gst_message_new_element (GstObject * src, GstStructure * structure) G_GNUC_MALLOC;
500 GstMessage * gst_message_new_segment_start (GstObject * src, GstFormat format, gint64 position) G_GNUC_MALLOC;
501 void gst_message_parse_segment_start (GstMessage *message, GstFormat *format,
505 GstMessage * gst_message_new_segment_done (GstObject * src, GstFormat format, gint64 position) G_GNUC_MALLOC;
506 void gst_message_parse_segment_done (GstMessage *message, GstFormat *format,
509 /* DURATION_CHANGED */
510 GstMessage * gst_message_new_duration_changed (GstObject * src) G_GNUC_MALLOC;
513 GstMessage * gst_message_new_latency (GstObject * src) G_GNUC_MALLOC;
516 GstMessage * gst_message_new_async_start (GstObject * src) G_GNUC_MALLOC;
519 GstMessage * gst_message_new_async_done (GstObject * src, GstClockTime running_time) G_GNUC_MALLOC;
520 void gst_message_parse_async_done (GstMessage *message, GstClockTime *running_time);
522 /* STRUCTURE CHANGE */
523 GstMessage * gst_message_new_structure_change (GstObject * src, GstStructureChangeType type,
524 GstElement *owner, gboolean busy) G_GNUC_MALLOC;
525 void gst_message_parse_structure_change (GstMessage *message, GstStructureChangeType *type,
526 GstElement **owner, gboolean *busy);
529 GstMessage * gst_message_new_stream_status (GstObject * src, GstStreamStatusType type,
530 GstElement *owner) G_GNUC_MALLOC;
531 void gst_message_parse_stream_status (GstMessage *message, GstStreamStatusType *type,
533 void gst_message_set_stream_status_object (GstMessage *message, const GValue *object);
534 const GValue * gst_message_get_stream_status_object (GstMessage *message);
537 GstMessage * gst_message_new_request_state (GstObject * src, GstState state) G_GNUC_MALLOC;
538 void gst_message_parse_request_state (GstMessage * message, GstState *state);
541 GstMessage * gst_message_new_step_start (GstObject * src, gboolean active, GstFormat format,
542 guint64 amount, gdouble rate, gboolean flush,
543 gboolean intermediate) G_GNUC_MALLOC;
544 void gst_message_parse_step_start (GstMessage * message, gboolean *active, GstFormat *format,
545 guint64 *amount, gdouble *rate, gboolean *flush,
546 gboolean *intermediate);
549 GstMessage * gst_message_new_qos (GstObject * src, gboolean live, guint64 running_time,
550 guint64 stream_time, guint64 timestamp, guint64 duration) G_GNUC_MALLOC;
551 void gst_message_set_qos_values (GstMessage * message, gint64 jitter, gdouble proportion,
553 void gst_message_set_qos_stats (GstMessage * message, GstFormat format, guint64 processed,
555 void gst_message_parse_qos (GstMessage * message, gboolean * live, guint64 * running_time,
556 guint64 * stream_time, guint64 * timestamp, guint64 * duration);
557 void gst_message_parse_qos_values (GstMessage * message, gint64 * jitter, gdouble * proportion,
559 void gst_message_parse_qos_stats (GstMessage * message, GstFormat * format, guint64 * processed,
562 GstMessage * gst_message_new_progress (GstObject * src, GstProgressType type, const gchar *code,
563 const gchar *text) G_GNUC_MALLOC;
564 void gst_message_parse_progress (GstMessage * message, GstProgressType * type, gchar ** code,
568 GstMessage * gst_message_new_toc (GstObject *src, GstToc *toc, gboolean updated);
569 void gst_message_parse_toc (GstMessage *message, GstToc **toc, gboolean *updated);
572 GstMessage * gst_message_new_reset_time (GstObject * src, GstClockTime running_time) G_GNUC_MALLOC;
573 void gst_message_parse_reset_time (GstMessage *message, GstClockTime *running_time);
576 GstMessage * gst_message_new_stream_start (GstObject * src) G_GNUC_MALLOC;
578 void gst_message_set_group_id (GstMessage *message, guint group_id);
579 gboolean gst_message_parse_group_id (GstMessage *message, guint *group_id);
582 GstMessage * gst_message_new_need_context (GstObject * src, const gchar * context_type) G_GNUC_MALLOC;
583 gboolean gst_message_parse_context_type (GstMessage * message, const gchar ** context_type);
586 GstMessage * gst_message_new_have_context (GstObject * src, GstContext *context) G_GNUC_MALLOC;
587 void gst_message_parse_have_context (GstMessage *message, GstContext **context);
590 GstMessage * gst_message_new_device_added (GstObject * src, GstDevice * device) G_GNUC_MALLOC;
591 void gst_message_parse_device_added (GstMessage * message, GstDevice ** device);
594 GstMessage * gst_message_new_device_removed (GstObject * src, GstDevice * device) G_GNUC_MALLOC;
595 void gst_message_parse_device_removed (GstMessage * message, GstDevice ** device);
600 #endif /* __GST_MESSAGE_H__ */