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: See gst_message_get_extended_type() to get the type (Since 1.2)
103 * @GST_MESSAGE_ANY: mask for all of the above messages.
105 * The different message types that are available. Also see
106 * #GstMessageExtendedType for more types.
108 /* NOTE: keep in sync with quark registration in gstmessage.c
109 * NOTE: keep GST_MESSAGE_ANY a valid gint to avoid compiler warnings.
111 /* FIXME: 2.0: Make it NOT flags, just a regular 1,2,3,4.. enumeration */
114 GST_MESSAGE_UNKNOWN = 0,
115 GST_MESSAGE_EOS = (1 << 0),
116 GST_MESSAGE_ERROR = (1 << 1),
117 GST_MESSAGE_WARNING = (1 << 2),
118 GST_MESSAGE_INFO = (1 << 3),
119 GST_MESSAGE_TAG = (1 << 4),
120 GST_MESSAGE_BUFFERING = (1 << 5),
121 GST_MESSAGE_STATE_CHANGED = (1 << 6),
122 GST_MESSAGE_STATE_DIRTY = (1 << 7),
123 GST_MESSAGE_STEP_DONE = (1 << 8),
124 GST_MESSAGE_CLOCK_PROVIDE = (1 << 9),
125 GST_MESSAGE_CLOCK_LOST = (1 << 10),
126 GST_MESSAGE_NEW_CLOCK = (1 << 11),
127 GST_MESSAGE_STRUCTURE_CHANGE = (1 << 12),
128 GST_MESSAGE_STREAM_STATUS = (1 << 13),
129 GST_MESSAGE_APPLICATION = (1 << 14),
130 GST_MESSAGE_ELEMENT = (1 << 15),
131 GST_MESSAGE_SEGMENT_START = (1 << 16),
132 GST_MESSAGE_SEGMENT_DONE = (1 << 17),
133 GST_MESSAGE_DURATION_CHANGED = (1 << 18),
134 GST_MESSAGE_LATENCY = (1 << 19),
135 GST_MESSAGE_ASYNC_START = (1 << 20),
136 GST_MESSAGE_ASYNC_DONE = (1 << 21),
137 GST_MESSAGE_REQUEST_STATE = (1 << 22),
138 GST_MESSAGE_STEP_START = (1 << 23),
139 GST_MESSAGE_QOS = (1 << 24),
140 GST_MESSAGE_PROGRESS = (1 << 25),
141 GST_MESSAGE_TOC = (1 << 26),
142 GST_MESSAGE_RESET_TIME = (1 << 27),
143 GST_MESSAGE_STREAM_START = (1 << 28),
144 GST_MESSAGE_NEED_CONTEXT = (1 << 29),
145 GST_MESSAGE_HAVE_CONTEXT = (1 << 30),
146 GST_MESSAGE_EXTENDED = (1 << 31),
151 * GstMessageExtendedType:
152 * @GST_MESSAGE_DEVICE: A #GstDevice addition or removal according to
153 * a #GstDeviceMonitor
155 * Extra message types, see #GstMessageType for the basic types
159 /* Skip those defined in #GstMessage to avoid confusion */
160 GST_MESSAGE_DEVICE = 3
161 } GstMessageExtendedType;
163 #include <gst/gstminiobject.h>
164 #include <gst/gstobject.h>
165 #include <gst/gstelement.h>
166 #include <gst/gsttaglist.h>
167 #include <gst/gststructure.h>
168 #include <gst/gstquery.h>
169 #include <gst/gsttoc.h>
171 #define GST_TYPE_MESSAGE (gst_message_get_type())
172 #define GST_IS_MESSAGE(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_MESSAGE))
173 #define GST_MESSAGE_CAST(obj) ((GstMessage*)(obj))
174 #define GST_MESSAGE(obj) (GST_MESSAGE_CAST(obj))
176 /* the lock is used to handle the synchronous handling of messages,
177 * the emiting thread is block until the handling thread processed
178 * the message using this mutex/cond pair */
179 #define GST_MESSAGE_GET_LOCK(message) (&GST_MESSAGE_CAST(message)->lock)
180 #define GST_MESSAGE_LOCK(message) g_mutex_lock(GST_MESSAGE_GET_LOCK(message))
181 #define GST_MESSAGE_UNLOCK(message) g_mutex_unlock(GST_MESSAGE_GET_LOCK(message))
182 #define GST_MESSAGE_GET_COND(message) (&GST_MESSAGE_CAST(message)->cond)
183 #define GST_MESSAGE_WAIT(message) g_cond_wait(GST_MESSAGE_GET_COND(message),GST_MESSAGE_GET_LOCK(message))
184 #define GST_MESSAGE_SIGNAL(message) g_cond_signal(GST_MESSAGE_GET_COND(message))
188 * @message: a #GstMessage
190 * Get the #GstMessageType of @message.
192 #define GST_MESSAGE_TYPE(message) (GST_MESSAGE_CAST(message)->type)
194 * GST_MESSAGE_TYPE_NAME:
195 * @message: a #GstMessage
197 * Get a constant string representation of the #GstMessageType of @message.
199 #define GST_MESSAGE_TYPE_NAME(message) gst_message_type_get_name(GST_MESSAGE_TYPE(message))
201 * GST_MESSAGE_TIMESTAMP:
202 * @message: a #GstMessage
204 * Get the timestamp of @message. This is the timestamp when the message
207 #define GST_MESSAGE_TIMESTAMP(message) (GST_MESSAGE_CAST(message)->timestamp)
210 * @message: a #GstMessage
212 * Get the object that posted @message.
214 #define GST_MESSAGE_SRC(message) (GST_MESSAGE_CAST(message)->src)
217 * GST_MESSAGE_SEQNUM:
218 * @message: a #GstMessage
220 * Get the sequence number of @message.
222 #define GST_MESSAGE_SEQNUM(message) (GST_MESSAGE_CAST(message)->seqnum)
225 * GST_MESSAGE_SRC_NAME:
226 * @message: a #GstMessage
228 * Get the name of the object that posted @message. Returns "(NULL)" if
229 * the message has no source object set.
231 #define GST_MESSAGE_SRC_NAME(message) (GST_MESSAGE_SRC(message) ? \
232 GST_OBJECT_NAME (GST_MESSAGE_SRC(message)) : "(NULL)")
235 * GstStructureChangeType:
236 * @GST_STRUCTURE_CHANGE_TYPE_PAD_LINK: Pad linking is starting or done.
237 * @GST_STRUCTURE_CHANGE_TYPE_PAD_UNLINK: Pad unlinking is starting or done.
239 * The type of a %GST_MESSAGE_STRUCTURE_CHANGE.
242 GST_STRUCTURE_CHANGE_TYPE_PAD_LINK = 0,
243 GST_STRUCTURE_CHANGE_TYPE_PAD_UNLINK = 1
244 } GstStructureChangeType;
247 * GstStreamStatusType:
248 * @GST_STREAM_STATUS_TYPE_CREATE: A new thread need to be created.
249 * @GST_STREAM_STATUS_TYPE_ENTER: a thread entered its loop function
250 * @GST_STREAM_STATUS_TYPE_LEAVE: a thread left its loop function
251 * @GST_STREAM_STATUS_TYPE_DESTROY: a thread is destroyed
252 * @GST_STREAM_STATUS_TYPE_START: a thread is started
253 * @GST_STREAM_STATUS_TYPE_PAUSE: a thread is paused
254 * @GST_STREAM_STATUS_TYPE_STOP: a thread is stopped
256 * The type of a %GST_MESSAGE_STREAM_STATUS. The stream status messages inform the
257 * application of new streaming threads and their status.
260 GST_STREAM_STATUS_TYPE_CREATE = 0,
261 GST_STREAM_STATUS_TYPE_ENTER = 1,
262 GST_STREAM_STATUS_TYPE_LEAVE = 2,
263 GST_STREAM_STATUS_TYPE_DESTROY = 3,
265 GST_STREAM_STATUS_TYPE_START = 8,
266 GST_STREAM_STATUS_TYPE_PAUSE = 9,
267 GST_STREAM_STATUS_TYPE_STOP = 10
268 } GstStreamStatusType;
272 * @GST_PROGRESS_TYPE_START: A new task started.
273 * @GST_PROGRESS_TYPE_CONTINUE: A task completed and a new one continues.
274 * @GST_PROGRESS_TYPE_COMPLETE: A task completed.
275 * @GST_PROGRESS_TYPE_CANCELED: A task was canceled.
276 * @GST_PROGRESS_TYPE_ERROR: A task caused an error. An error message is also
279 * The type of a %GST_MESSAGE_PROGRESS. The progress messages inform the
280 * application of the status of asynchronous tasks.
283 GST_PROGRESS_TYPE_START = 0,
284 GST_PROGRESS_TYPE_CONTINUE = 1,
285 GST_PROGRESS_TYPE_COMPLETE = 2,
286 GST_PROGRESS_TYPE_CANCELED = 3,
287 GST_PROGRESS_TYPE_ERROR = 4
292 * @mini_object: the parent structure
293 * @type: the #GstMessageType of the message
294 * @timestamp: the timestamp of the message
295 * @src: the src of the message
296 * @seqnum: the sequence number of the message
302 GstMiniObject mini_object;
304 /*< public > *//* with COW */
310 /*< private >*//* with MESSAGE_LOCK */
311 GMutex lock; /* lock and cond for async delivery */
315 GType gst_message_get_type (void);
317 const gchar* gst_message_type_get_name (GstMessageType type);
318 GQuark gst_message_type_to_quark (GstMessageType type);
320 GstMessageExtendedType gst_message_get_extended_type (GstMessage * msg);
325 * @msg: the message to ref
327 * Convenience macro to increase the reference count of the message.
329 * Returns: @msg (for convenience when doing assignments)
331 #ifdef _FOOL_GTK_DOC_
332 G_INLINE_FUNC GstMessage * gst_message_ref (GstMessage * msg);
335 static inline GstMessage *
336 gst_message_ref (GstMessage * msg)
338 return (GstMessage *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (msg));
343 * @msg: the message to unref
345 * Convenience macro to decrease the reference count of the message, possibly
348 #ifdef _FOOL_GTK_DOC_
349 G_INLINE_FUNC void gst_message_unref (GstMessage * msg);
353 gst_message_unref (GstMessage * msg)
355 gst_mini_object_unref (GST_MINI_OBJECT_CAST (msg));
361 * @msg: the message to copy
363 * Creates a copy of the message. Returns a copy of the message.
365 * Returns: (transfer full): a new copy of @msg.
369 #ifdef _FOOL_GTK_DOC_
370 G_INLINE_FUNC GstMessage * gst_message_copy (const GstMessage * msg);
373 static inline GstMessage *
374 gst_message_copy (const GstMessage * msg)
376 return GST_MESSAGE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (msg)));
380 * gst_message_is_writable:
381 * @msg: a #GstMessage
383 * Tests if you can safely write into a message's structure or validly
384 * modify the seqnum and timestamp fields.
386 #define gst_message_is_writable(msg) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (msg))
388 * gst_message_make_writable:
389 * @msg: (transfer full): the message to make writable
391 * Checks if a message is writable. If not, a writable copy is made and
394 * Returns: (transfer full): a message (possibly a duplicate) that is writable.
398 #define gst_message_make_writable(msg) GST_MESSAGE_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (msg)))
400 * gst_message_replace:
401 * @old_message: (inout) (transfer full): pointer to a pointer to a #GstMessage
403 * @new_message: (allow-none) (transfer none): pointer to a #GstMessage that will
404 * replace the message pointed to by @old_message.
406 * Modifies a pointer to a #GstMessage to point to a different #GstMessage. The
407 * modification is done atomically (so this is useful for ensuring thread safety
408 * in some cases), and the reference counts are updated appropriately (the old
409 * message is unreffed, the new one is reffed).
411 * Either @new_message or the #GstMessage pointed to by @old_message may be NULL.
413 * Returns: TRUE if @new_message was different from @old_message
415 #ifdef _FOOL_GTK_DOC_
416 G_INLINE_FUNC gboolean gst_message_replace (GstMessage **old_message, GstMessage *new_message);
419 static inline gboolean
420 gst_message_replace (GstMessage **old_message, GstMessage *new_message)
422 return gst_mini_object_replace ((GstMiniObject **) old_message, (GstMiniObject *) new_message);
426 /* custom messages */
427 GstMessage * gst_message_new_custom (GstMessageType type,
429 GstStructure * structure) G_GNUC_MALLOC;
431 gst_message_get_structure (GstMessage *message);
433 gboolean gst_message_has_name (GstMessage *message, const gchar *name);
435 /* identifiers for events and messages */
436 guint32 gst_message_get_seqnum (GstMessage *message);
437 void gst_message_set_seqnum (GstMessage *message, guint32 seqnum);
440 GstMessage * gst_message_new_eos (GstObject * src) G_GNUC_MALLOC;
444 GstMessage * gst_message_new_error (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
445 void gst_message_parse_error (GstMessage *message, GError **gerror, gchar **debug);
448 GstMessage * gst_message_new_warning (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
449 void gst_message_parse_warning (GstMessage *message, GError **gerror, gchar **debug);
452 GstMessage * gst_message_new_info (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
453 void gst_message_parse_info (GstMessage *message, GError **gerror, gchar **debug);
456 GstMessage * gst_message_new_tag (GstObject * src, GstTagList * tag_list) G_GNUC_MALLOC;
457 void gst_message_parse_tag (GstMessage *message, GstTagList **tag_list);
460 GstMessage * gst_message_new_buffering (GstObject * src, gint percent) G_GNUC_MALLOC;
461 void gst_message_parse_buffering (GstMessage *message, gint *percent);
462 void gst_message_set_buffering_stats (GstMessage *message, GstBufferingMode mode,
463 gint avg_in, gint avg_out,
464 gint64 buffering_left);
465 void gst_message_parse_buffering_stats (GstMessage *message, GstBufferingMode *mode,
466 gint *avg_in, gint *avg_out,
467 gint64 *buffering_left);
470 GstMessage * gst_message_new_state_changed (GstObject * src, GstState oldstate,
471 GstState newstate, GstState pending) G_GNUC_MALLOC;
472 void gst_message_parse_state_changed (GstMessage *message, GstState *oldstate,
473 GstState *newstate, GstState *pending);
476 GstMessage * gst_message_new_state_dirty (GstObject * src) G_GNUC_MALLOC;
479 GstMessage * gst_message_new_step_done (GstObject * src, GstFormat format, guint64 amount,
480 gdouble rate, gboolean flush, gboolean intermediate,
481 guint64 duration, gboolean eos) G_GNUC_MALLOC;
482 void gst_message_parse_step_done (GstMessage * message, GstFormat *format, guint64 *amount,
483 gdouble *rate, gboolean *flush, gboolean *intermediate,
484 guint64 *duration, gboolean *eos);
486 GstMessage * gst_message_new_clock_provide (GstObject * src, GstClock *clock, gboolean ready) G_GNUC_MALLOC;
487 void gst_message_parse_clock_provide (GstMessage *message, GstClock **clock,
491 GstMessage * gst_message_new_clock_lost (GstObject * src, GstClock *clock) G_GNUC_MALLOC;
492 void gst_message_parse_clock_lost (GstMessage *message, GstClock **clock);
495 GstMessage * gst_message_new_new_clock (GstObject * src, GstClock *clock) G_GNUC_MALLOC;
496 void gst_message_parse_new_clock (GstMessage *message, GstClock **clock);
499 GstMessage * gst_message_new_application (GstObject * src, GstStructure * structure) G_GNUC_MALLOC;
502 GstMessage * gst_message_new_element (GstObject * src, GstStructure * structure) G_GNUC_MALLOC;
505 GstMessage * gst_message_new_segment_start (GstObject * src, GstFormat format, gint64 position) G_GNUC_MALLOC;
506 void gst_message_parse_segment_start (GstMessage *message, GstFormat *format,
510 GstMessage * gst_message_new_segment_done (GstObject * src, GstFormat format, gint64 position) G_GNUC_MALLOC;
511 void gst_message_parse_segment_done (GstMessage *message, GstFormat *format,
514 /* DURATION_CHANGED */
515 GstMessage * gst_message_new_duration_changed (GstObject * src) G_GNUC_MALLOC;
518 GstMessage * gst_message_new_latency (GstObject * src) G_GNUC_MALLOC;
521 GstMessage * gst_message_new_async_start (GstObject * src) G_GNUC_MALLOC;
524 GstMessage * gst_message_new_async_done (GstObject * src, GstClockTime running_time) G_GNUC_MALLOC;
525 void gst_message_parse_async_done (GstMessage *message, GstClockTime *running_time);
527 /* STRUCTURE CHANGE */
528 GstMessage * gst_message_new_structure_change (GstObject * src, GstStructureChangeType type,
529 GstElement *owner, gboolean busy) G_GNUC_MALLOC;
530 void gst_message_parse_structure_change (GstMessage *message, GstStructureChangeType *type,
531 GstElement **owner, gboolean *busy);
534 GstMessage * gst_message_new_stream_status (GstObject * src, GstStreamStatusType type,
535 GstElement *owner) G_GNUC_MALLOC;
536 void gst_message_parse_stream_status (GstMessage *message, GstStreamStatusType *type,
538 void gst_message_set_stream_status_object (GstMessage *message, const GValue *object);
539 const GValue * gst_message_get_stream_status_object (GstMessage *message);
542 GstMessage * gst_message_new_request_state (GstObject * src, GstState state) G_GNUC_MALLOC;
543 void gst_message_parse_request_state (GstMessage * message, GstState *state);
546 GstMessage * gst_message_new_step_start (GstObject * src, gboolean active, GstFormat format,
547 guint64 amount, gdouble rate, gboolean flush,
548 gboolean intermediate) G_GNUC_MALLOC;
549 void gst_message_parse_step_start (GstMessage * message, gboolean *active, GstFormat *format,
550 guint64 *amount, gdouble *rate, gboolean *flush,
551 gboolean *intermediate);
554 GstMessage * gst_message_new_qos (GstObject * src, gboolean live, guint64 running_time,
555 guint64 stream_time, guint64 timestamp, guint64 duration) G_GNUC_MALLOC;
556 void gst_message_set_qos_values (GstMessage * message, gint64 jitter, gdouble proportion,
558 void gst_message_set_qos_stats (GstMessage * message, GstFormat format, guint64 processed,
560 void gst_message_parse_qos (GstMessage * message, gboolean * live, guint64 * running_time,
561 guint64 * stream_time, guint64 * timestamp, guint64 * duration);
562 void gst_message_parse_qos_values (GstMessage * message, gint64 * jitter, gdouble * proportion,
564 void gst_message_parse_qos_stats (GstMessage * message, GstFormat * format, guint64 * processed,
567 GstMessage * gst_message_new_progress (GstObject * src, GstProgressType type, const gchar *code,
568 const gchar *text) G_GNUC_MALLOC;
569 void gst_message_parse_progress (GstMessage * message, GstProgressType * type, gchar ** code,
573 GstMessage * gst_message_new_toc (GstObject *src, GstToc *toc, gboolean updated);
574 void gst_message_parse_toc (GstMessage *message, GstToc **toc, gboolean *updated);
577 GstMessage * gst_message_new_reset_time (GstObject * src, GstClockTime running_time) G_GNUC_MALLOC;
578 void gst_message_parse_reset_time (GstMessage *message, GstClockTime *running_time);
581 GstMessage * gst_message_new_stream_start (GstObject * src) G_GNUC_MALLOC;
583 void gst_message_set_group_id (GstMessage *message, guint group_id);
584 gboolean gst_message_parse_group_id (GstMessage *message, guint *group_id);
587 GstMessage * gst_message_new_need_context (GstObject * src, const gchar * context_type) G_GNUC_MALLOC;
588 gboolean gst_message_parse_context_type (GstMessage * message, const gchar ** context_type);
591 GstMessage * gst_message_new_have_context (GstObject * src, GstContext *context) G_GNUC_MALLOC;
592 void gst_message_parse_have_context (GstMessage *message, GstContext **context);
596 #endif /* __GST_MESSAGE_H__ */