Jabber: initial version of Jingle support

1 files changed, 738 insertions, 0 deletions

diff --git a/include/gst/gstevent.h b/include/gst/gstevent.h
new file mode 100644
index 0000000000..e036a34ad4
--- /dev/null
+++ b/include/gst/gstevent.h
@@ -0,0 +1,738 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2000 Wim Taymans <wim.taymans@chello.be>
+ *                    2005 Wim Taymans <wim@fluendo.com>
+ *
+ * gstevent.h: Header for GstEvent subsystem
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+
+#ifndef __GST_EVENT_H__
+#define __GST_EVENT_H__
+
+typedef struct _GstEvent GstEvent;
+
+/**
+ * GstEventTypeFlags:
+ * @GST_EVENT_TYPE_UPSTREAM:     Set if the event can travel upstream.
+ * @GST_EVENT_TYPE_DOWNSTREAM:   Set if the event can travel downstream.
+ * @GST_EVENT_TYPE_SERIALIZED:   Set if the event should be serialized with data
+ *                               flow.
+ * @GST_EVENT_TYPE_STICKY:       Set if the event is sticky on the pads.
+ * @GST_EVENT_TYPE_STICKY_MULTI: Multiple sticky events can be on a pad, each
+ *                               identified by the event name.
+ *
+ * #GstEventTypeFlags indicate the aspects of the different #GstEventType
+ * values. You can get the type flags of a #GstEventType with the
+ * gst_event_type_get_flags() function.
+ */
+typedef enum {
+  GST_EVENT_TYPE_UPSTREAM       = 1 << 0,
+  GST_EVENT_TYPE_DOWNSTREAM     = 1 << 1,
+  GST_EVENT_TYPE_SERIALIZED     = 1 << 2,
+  GST_EVENT_TYPE_STICKY         = 1 << 3,
+  GST_EVENT_TYPE_STICKY_MULTI   = 1 << 4
+} GstEventTypeFlags;
+
+/**
+ * GST_EVENT_TYPE_BOTH: (value 3) (type GstEventTypeFlags)
+ *
+ * The same thing as #GST_EVENT_TYPE_UPSTREAM | #GST_EVENT_TYPE_DOWNSTREAM.
+ */
+#define GST_EVENT_TYPE_BOTH \
+    ((GstEventTypeFlags)(GST_EVENT_TYPE_UPSTREAM | GST_EVENT_TYPE_DOWNSTREAM))
+
+#define GST_EVENT_NUM_SHIFT     (8)
+
+/**
+ * GST_EVENT_MAKE_TYPE:
+ * @num: the event number to create
+ * @flags: the event flags
+ *
+ * when making custom event types, use this macro with the num and
+ * the given flags
+ */
+#define GST_EVENT_MAKE_TYPE(num,flags) \
+    (((num) << GST_EVENT_NUM_SHIFT) | (flags))
+
+#define _FLAG(name) GST_EVENT_TYPE_##name
+
+/**
+ * GstEventType:
+ * @GST_EVENT_UNKNOWN: unknown event.
+ * @GST_EVENT_FLUSH_START: Start a flush operation. This event clears all data
+ *                 from the pipeline and unblock all streaming threads.
+ * @GST_EVENT_FLUSH_STOP: Stop a flush operation. This event resets the
+ *                 running-time of the pipeline.
+ * @GST_EVENT_SELECT_STREAMS: A request to select one or more streams (Since: 1.10)
+ * @GST_EVENT_STREAM_START: Event to mark the start of a new stream. Sent before any
+ *                 other serialized event and only sent at the start of a new stream,
+ *                 not after flushing seeks.
+ * @GST_EVENT_CAPS: #GstCaps event. Notify the pad of a new media type.
+ * @GST_EVENT_SEGMENT: A new media segment follows in the dataflow. The
+ *                 segment events contains information for clipping buffers and
+ *                 converting buffer timestamps to running-time and
+ *                 stream-time.
+ * @GST_EVENT_STREAM_COLLECTION: A new #GstStreamCollection is available (Since: 1.10)
+ * @GST_EVENT_TAG: A new set of metadata tags has been found in the stream.
+ * @GST_EVENT_BUFFERSIZE: Notification of buffering requirements. Currently not
+ *                 used yet.
+ * @GST_EVENT_SINK_MESSAGE: An event that sinks turn into a message. Used to
+ *                          send messages that should be emitted in sync with
+ *                          rendering.
+ * @GST_EVENT_STREAM_GROUP_DONE: Indicates that there is no more data for
+ *                 the stream group ID in the message. Sent before EOS
+ *                 in some instances and should be handled mostly the same. (Since: 1.10)
+ * @GST_EVENT_EOS: End-Of-Stream. No more data is to be expected to follow
+ *                 without either a STREAM_START event, or a FLUSH_STOP and a SEGMENT
+ *                 event.
+ * @GST_EVENT_SEGMENT_DONE: Marks the end of a segment playback.
+ * @GST_EVENT_GAP: Marks a gap in the datastream.
+ * @GST_EVENT_TOC: An event which indicates that a new table of contents (TOC)
+ *                 was found or updated.
+ * @GST_EVENT_PROTECTION: An event which indicates that new or updated
+ *                 encryption information has been found in the stream.
+ * @GST_EVENT_QOS: A quality message. Used to indicate to upstream elements
+ *                 that the downstream elements should adjust their processing
+ *                 rate.
+ * @GST_EVENT_SEEK: A request for a new playback position and rate.
+ * @GST_EVENT_NAVIGATION: Navigation events are usually used for communicating
+ *                        user requests, such as mouse or keyboard movements,
+ *                        to upstream elements.
+ * @GST_EVENT_LATENCY: Notification of new latency adjustment. Sinks will use
+ *                     the latency information to adjust their synchronisation.
+ * @GST_EVENT_STEP: A request for stepping through the media. Sinks will usually
+ *                  execute the step operation.
+ * @GST_EVENT_RECONFIGURE: A request for upstream renegotiating caps and reconfiguring.
+ * @GST_EVENT_TOC_SELECT: A request for a new playback position based on TOC
+ *                        entry's UID.
+ * @GST_EVENT_INSTANT_RATE_CHANGE: Notify downstream that a playback rate override
+ *                                 should be applied as soon as possible. (Since: 1.18)
+ * @GST_EVENT_INSTANT_RATE_SYNC_TIME: Sent by the pipeline to notify elements that handle the
+ *                                    instant-rate-change event about the running-time when
+ *                                    the rate multiplier should be applied (or was applied). (Since: 1.18)
+ * @GST_EVENT_CUSTOM_UPSTREAM: Upstream custom event
+ * @GST_EVENT_CUSTOM_DOWNSTREAM: Downstream custom event that travels in the
+ *                        data flow.
+ * @GST_EVENT_CUSTOM_DOWNSTREAM_OOB: Custom out-of-band downstream event.
+ * @GST_EVENT_CUSTOM_DOWNSTREAM_STICKY: Custom sticky downstream event.
+ * @GST_EVENT_CUSTOM_BOTH: Custom upstream or downstream event.
+ *                         In-band when travelling downstream.
+ * @GST_EVENT_CUSTOM_BOTH_OOB: Custom upstream or downstream out-of-band event.
+ *
+ * #GstEventType lists the standard event types that can be sent in a pipeline.
+ *
+ * The custom event types can be used for private messages between elements
+ * that can't be expressed using normal
+ * GStreamer buffer passing semantics. Custom events carry an arbitrary
+ * #GstStructure.
+ * Specific custom events are distinguished by the name of the structure.
+ */
+/* NOTE: keep in sync with quark registration in gstevent.c */
+typedef enum {
+  GST_EVENT_UNKNOWN               = GST_EVENT_MAKE_TYPE (0, 0),
+
+  /* bidirectional events */
+  GST_EVENT_FLUSH_START           = GST_EVENT_MAKE_TYPE (10, _FLAG(BOTH)),
+  GST_EVENT_FLUSH_STOP            = GST_EVENT_MAKE_TYPE (20, _FLAG(BOTH) | _FLAG(SERIALIZED)),
+
+  /* downstream serialized events */
+  GST_EVENT_STREAM_START          = GST_EVENT_MAKE_TYPE (40, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY)),
+  GST_EVENT_CAPS                  = GST_EVENT_MAKE_TYPE (50, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY)),
+  GST_EVENT_SEGMENT               = GST_EVENT_MAKE_TYPE (70, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY)),
+  GST_EVENT_STREAM_COLLECTION     = GST_EVENT_MAKE_TYPE (75, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY) | _FLAG(STICKY_MULTI)),
+  GST_EVENT_TAG                   = GST_EVENT_MAKE_TYPE (80, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY) | _FLAG(STICKY_MULTI)),
+  GST_EVENT_BUFFERSIZE            = GST_EVENT_MAKE_TYPE (90, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY)),
+  GST_EVENT_SINK_MESSAGE          = GST_EVENT_MAKE_TYPE (100, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY) | _FLAG(STICKY_MULTI)),
+  GST_EVENT_STREAM_GROUP_DONE     = GST_EVENT_MAKE_TYPE (105, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY)),
+  GST_EVENT_EOS                   = GST_EVENT_MAKE_TYPE (110, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY)),
+  GST_EVENT_TOC                   = GST_EVENT_MAKE_TYPE (120, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY) | _FLAG(STICKY_MULTI)),
+  GST_EVENT_PROTECTION            = GST_EVENT_MAKE_TYPE (130, _FLAG (DOWNSTREAM) | _FLAG (SERIALIZED) | _FLAG (STICKY) | _FLAG (STICKY_MULTI)),
+
+  /* non-sticky downstream serialized */
+  GST_EVENT_SEGMENT_DONE          = GST_EVENT_MAKE_TYPE (150, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED)),
+  GST_EVENT_GAP                   = GST_EVENT_MAKE_TYPE (160, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED)),
+
+  /* sticky downstream non-serialized */
+  GST_EVENT_INSTANT_RATE_CHANGE   = GST_EVENT_MAKE_TYPE (180, _FLAG(DOWNSTREAM) | _FLAG(STICKY)),
+
+  /* upstream events */
+  GST_EVENT_QOS                    = GST_EVENT_MAKE_TYPE (190, _FLAG(UPSTREAM)),
+  GST_EVENT_SEEK                   = GST_EVENT_MAKE_TYPE (200, _FLAG(UPSTREAM)),
+  GST_EVENT_NAVIGATION             = GST_EVENT_MAKE_TYPE (210, _FLAG(UPSTREAM)),
+  GST_EVENT_LATENCY                = GST_EVENT_MAKE_TYPE (220, _FLAG(UPSTREAM)),
+  GST_EVENT_STEP                   = GST_EVENT_MAKE_TYPE (230, _FLAG(UPSTREAM)),
+  GST_EVENT_RECONFIGURE            = GST_EVENT_MAKE_TYPE (240, _FLAG(UPSTREAM)),
+  GST_EVENT_TOC_SELECT             = GST_EVENT_MAKE_TYPE (250, _FLAG(UPSTREAM)),
+  GST_EVENT_SELECT_STREAMS         = GST_EVENT_MAKE_TYPE (260, _FLAG(UPSTREAM)),
+  GST_EVENT_INSTANT_RATE_SYNC_TIME = GST_EVENT_MAKE_TYPE (261, _FLAG(UPSTREAM)),
+
+  /* custom events start here */
+  GST_EVENT_CUSTOM_UPSTREAM          = GST_EVENT_MAKE_TYPE (270, _FLAG(UPSTREAM)),
+  GST_EVENT_CUSTOM_DOWNSTREAM        = GST_EVENT_MAKE_TYPE (280, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED)),
+  GST_EVENT_CUSTOM_DOWNSTREAM_OOB    = GST_EVENT_MAKE_TYPE (290, _FLAG(DOWNSTREAM)),
+  GST_EVENT_CUSTOM_DOWNSTREAM_STICKY = GST_EVENT_MAKE_TYPE (300, _FLAG(DOWNSTREAM) | _FLAG(SERIALIZED) | _FLAG(STICKY) | _FLAG(STICKY_MULTI)),
+  GST_EVENT_CUSTOM_BOTH              = GST_EVENT_MAKE_TYPE (310, _FLAG(BOTH) | _FLAG(SERIALIZED)),
+  GST_EVENT_CUSTOM_BOTH_OOB          = GST_EVENT_MAKE_TYPE (320, _FLAG(BOTH))
+} GstEventType;
+#undef _FLAG
+
+/**
+ * GstStreamFlags:
+ * @GST_STREAM_FLAG_NONE: This stream has no special attributes
+ * @GST_STREAM_FLAG_SPARSE: This stream is a sparse stream (e.g. a subtitle
+ *    stream), data may flow only in irregular intervals with large gaps in
+ *    between.
+ * @GST_STREAM_FLAG_SELECT: This stream should be selected by default. This
+ *    flag may be used by demuxers to signal that a stream should be selected
+ *    by default in a playback scenario.
+ * @GST_STREAM_FLAG_UNSELECT: This stream should not be selected by default.
+ *    This flag may be used by demuxers to signal that a stream should not
+ *    be selected by default in a playback scenario, but only if explicitly
+ *    selected by the user (e.g. an audio track for the hard of hearing or
+ *    a director's commentary track).
+ *
+ * Since: 1.2
+ */
+typedef enum {
+  GST_STREAM_FLAG_NONE,
+  GST_STREAM_FLAG_SPARSE       = (1 << 0),
+  GST_STREAM_FLAG_SELECT       = (1 << 1),
+  GST_STREAM_FLAG_UNSELECT     = (1 << 2)
+} GstStreamFlags;
+
+#include <gst/gstminiobject.h>
+#include <gst/gstformat.h>
+#include <gst/gstobject.h>
+#include <gst/gstclock.h>
+#include <gst/gststructure.h>
+#include <gst/gsttaglist.h>
+#include <gst/gstsegment.h>
+#include <gst/gstmessage.h>
+#include <gst/gstcontext.h>
+#include <gst/gststreams.h>
+#include <gst/gsttoc.h>
+#include <gst/gststreamcollection.h>
+
+G_BEGIN_DECLS
+
+GST_API GType _gst_event_type;
+
+#define GST_TYPE_EVENT                  (_gst_event_type)
+#define GST_IS_EVENT(obj)               (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_EVENT))
+#define GST_EVENT_CAST(obj)             ((GstEvent *)(obj))
+#define GST_EVENT(obj)                  (GST_EVENT_CAST(obj))
+
+/**
+ * GST_EVENT_TYPE:
+ * @event: the event to query
+ *
+ * Get the #GstEventType of the event.
+ */
+#define GST_EVENT_TYPE(event)           (GST_EVENT_CAST(event)->type)
+
+/**
+ * GST_EVENT_TYPE_NAME:
+ * @event: the event to query
+ *
+ * Get a constant string representation of the #GstEventType of the event.
+ */
+#define GST_EVENT_TYPE_NAME(event)      (gst_event_type_get_name(GST_EVENT_TYPE(event)))
+
+/**
+ * GST_EVENT_TIMESTAMP:
+ * @event: the event to query
+ *
+ * Get the #GstClockTime timestamp of the event. This is the time when the event
+ * was created.
+ */
+/* FIXME 2.0: Remove the GstEvent::timestamp field */
+#define GST_EVENT_TIMESTAMP(event)      (GST_EVENT_CAST(event)->timestamp)
+
+/**
+ * GST_EVENT_SEQNUM:
+ * @event: the event to query
+ *
+ * The sequence number of @event.
+ */
+#define GST_EVENT_SEQNUM(event)         (GST_EVENT_CAST(event)->seqnum)
+
+/**
+ * GST_EVENT_IS_UPSTREAM:
+ * @ev: the event to query
+ *
+ * Check if an event can travel upstream.
+ */
+#define GST_EVENT_IS_UPSTREAM(ev)       !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_UPSTREAM)
+/**
+ * GST_EVENT_IS_DOWNSTREAM:
+ * @ev: the event to query
+ *
+ * Check if an event can travel downstream.
+ */
+#define GST_EVENT_IS_DOWNSTREAM(ev)     !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_DOWNSTREAM)
+/**
+ * GST_EVENT_IS_SERIALIZED:
+ * @ev: the event to query
+ *
+ * Check if an event is serialized with the data stream.
+ */
+#define GST_EVENT_IS_SERIALIZED(ev)     !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_SERIALIZED)
+/**
+ * GST_EVENT_IS_STICKY:
+ * @ev: the event to query
+ *
+ * Check if an event is sticky on the pads.
+ */
+#define GST_EVENT_IS_STICKY(ev)     !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_STICKY)
+
+/**
+ * gst_event_is_writable:
+ * @ev: a #GstEvent
+ *
+ * Tests if you can safely write data into a event's structure or validly
+ * modify the seqnum and timestamp field.
+ */
+#define         gst_event_is_writable(ev)     gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (ev))
+/**
+ * gst_event_make_writable:
+ * @ev: (transfer full): a #GstEvent
+ *
+ * Makes a writable event from the given event. If the source event is
+ * already writable, this will simply return the same event. A copy will
+ * otherwise be made using gst_event_copy().
+ *
+ * Returns: (transfer full): a writable event which may or may not be the
+ *     same as @ev
+ */
+#define         gst_event_make_writable(ev)   GST_EVENT_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (ev)))
+
+#ifndef GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS
+static inline gboolean
+gst_event_replace(GstEvent** old_event, GstEvent* new_event)
+{
+  return gst_mini_object_replace ((GstMiniObject **) old_event, (GstMiniObject *) new_event);
+}
+
+static inline GstEvent *
+gst_event_steal (GstEvent **old_event)
+{
+  return GST_EVENT_CAST (gst_mini_object_steal ((GstMiniObject **) old_event));
+}
+
+static inline gboolean
+gst_event_take (GstEvent **old_event, GstEvent *new_event)
+{
+  return gst_mini_object_take ((GstMiniObject **) old_event, (GstMiniObject *) new_event);
+}
+#else /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
+GST_API
+gboolean    gst_event_replace (GstEvent ** old_event,
+                               GstEvent * new_event);
+
+GST_API
+GstEvent *  gst_event_steal   (GstEvent ** old_event);
+
+GST_API
+gboolean    gst_event_take    (GstEvent ** old_event,
+                               GstEvent *new_event);
+#endif /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
+
+/**
+ * GstQOSType:
+ * @GST_QOS_TYPE_OVERFLOW: The QoS event type that is produced when upstream
+ *    elements are producing data too quickly and the element can't keep up
+ *    processing the data. Upstream should reduce their production rate. This
+ *    type is also used when buffers arrive early or in time.
+ * @GST_QOS_TYPE_UNDERFLOW: The QoS event type that is produced when upstream
+ *    elements are producing data too slowly and need to speed up their
+ *    production rate.
+ * @GST_QOS_TYPE_THROTTLE: The QoS event type that is produced when the
+ *    application enabled throttling to limit the data rate.
+ *
+ * The different types of QoS events that can be given to the
+ * gst_event_new_qos() method.
+ */
+typedef enum {
+  GST_QOS_TYPE_OVERFLOW        = 0,
+  GST_QOS_TYPE_UNDERFLOW       = 1,
+  GST_QOS_TYPE_THROTTLE        = 2
+} GstQOSType;
+
+/**
+ * GstGapFlags:
+ * @GST_GAP_FLAG_MISSING_DATA: The #GST_EVENT_GAP signals missing data,
+ *    for example because of packet loss.
+ *
+ * The different flags that can be set on #GST_EVENT_GAP events. See
+ * gst_event_set_gap_flags() for details.
+ *
+ * Since: 1.20
+ */
+typedef enum {
+  GST_GAP_FLAG_MISSING_DATA = (1<<0),
+} GstGapFlags;
+
+/**
+ * GstEvent:
+ * @mini_object: the parent structure
+ * @type: the #GstEventType of the event
+ * @timestamp: the timestamp of the event
+ * @seqnum: the sequence number of the event
+ *
+ * A #GstEvent.
+ */
+struct _GstEvent {
+  GstMiniObject mini_object;
+
+  /*< public >*/ /* with COW */
+  GstEventType  type;
+  /* FIXME 2.0: Remove the GstEvent::timestamp field */
+  guint64       timestamp;
+  guint32       seqnum;
+};
+
+GST_API
+const gchar*    gst_event_type_get_name         (GstEventType type);
+
+GST_API
+GQuark          gst_event_type_to_quark         (GstEventType type);
+
+GST_API
+GstEventTypeFlags
+                gst_event_type_get_flags        (GstEventType type);
+
+#ifndef GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS
+/* refcounting */
+static inline GstEvent *
+gst_event_ref (GstEvent * event)
+{
+  return (GstEvent *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (event));
+}
+
+static inline void
+gst_event_unref (GstEvent * event)
+{
+  gst_mini_object_unref (GST_MINI_OBJECT_CAST (event));
+}
+
+static inline void
+gst_clear_event (GstEvent ** event_ptr)
+{
+  gst_clear_mini_object ((GstMiniObject **) event_ptr);
+}
+
+/* copy event */
+static inline GstEvent *
+gst_event_copy (const GstEvent * event)
+{
+  return GST_EVENT_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (event)));
+}
+#else /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
+GST_API
+GstEvent *      gst_event_ref                   (GstEvent * event);
+
+GST_API
+void            gst_event_unref                 (GstEvent * event);
+
+GST_API
+void            gst_clear_event                 (GstEvent ** event_ptr);
+
+GST_API
+GstEvent *      gst_event_copy                  (const GstEvent * event);
+#endif /* GST_DISABLE_MINIOBJECT_INLINE_FUNCTIONS */
+
+GST_API
+GType           gst_event_get_type              (void);
+
+/* custom event */
+
+GST_API
+GstEvent*       gst_event_new_custom            (GstEventType type, GstStructure *structure) G_GNUC_MALLOC;
+
+GST_API
+const GstStructure *
+                gst_event_get_structure         (GstEvent *event);
+
+GST_API
+GstStructure *  gst_event_writable_structure    (GstEvent *event);
+
+GST_API
+gboolean        gst_event_has_name              (GstEvent *event, const gchar *name);
+
+GST_API
+gboolean        gst_event_has_name_id           (GstEvent *event, GQuark name);
+
+/* identifiers for events and messages */
+
+GST_API
+guint32         gst_event_get_seqnum            (GstEvent *event);
+
+GST_API
+void            gst_event_set_seqnum            (GstEvent *event, guint32 seqnum);
+
+/* accumulated pad offsets for the event */
+
+GST_API
+gint64          gst_event_get_running_time_offset (GstEvent *event);
+
+GST_API
+void            gst_event_set_running_time_offset (GstEvent *event, gint64 offset);
+
+/* Stream start event */
+
+GST_API
+GstEvent *      gst_event_new_stream_start      (const gchar *stream_id) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_stream_start    (GstEvent *event, const gchar **stream_id);
+
+GST_API
+void            gst_event_set_stream		(GstEvent *event, GstStream *stream);
+
+GST_API
+void            gst_event_parse_stream		(GstEvent *event, GstStream **stream);
+
+GST_API
+void            gst_event_set_stream_flags      (GstEvent *event, GstStreamFlags flags);
+
+GST_API
+void            gst_event_parse_stream_flags    (GstEvent *event, GstStreamFlags *flags);
+
+GST_API
+void            gst_event_set_group_id          (GstEvent *event, guint group_id);
+
+GST_API
+gboolean        gst_event_parse_group_id        (GstEvent *event, guint *group_id);
+
+/* flush events */
+
+GST_API
+GstEvent *      gst_event_new_flush_start       (void) G_GNUC_MALLOC;
+
+GST_API
+GstEvent *      gst_event_new_flush_stop        (gboolean reset_time) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_flush_stop      (GstEvent *event, gboolean *reset_time);
+
+/* Stream collection event */
+
+GST_API
+GstEvent *      gst_event_new_stream_collection   (GstStreamCollection *collection) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_stream_collection (GstEvent *event, GstStreamCollection **collection);
+
+/* select streams event */
+
+GST_API
+GstEvent *      gst_event_new_select_streams    (GList *streams);
+
+GST_API
+void            gst_event_parse_select_streams  (GstEvent *event, GList **streams);
+
+/* stream-group-done event */
+
+GST_API
+GstEvent *      gst_event_new_stream_group_done (guint group_id) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_stream_group_done (GstEvent *event, guint *group_id);
+
+/* EOS event */
+
+GST_API
+GstEvent *      gst_event_new_eos               (void) G_GNUC_MALLOC;
+
+/* GAP event */
+
+GST_API
+GstEvent *      gst_event_new_gap               (GstClockTime   timestamp,
+                                                 GstClockTime   duration) G_GNUC_MALLOC;
+GST_API
+void            gst_event_parse_gap             (GstEvent     * event,
+                                                 GstClockTime * timestamp,
+                                                 GstClockTime * duration);
+
+GST_API
+void            gst_event_set_gap_flags           (GstEvent    * event,
+                                                   GstGapFlags   flags);
+
+GST_API
+void            gst_event_parse_gap_flags         (GstEvent    * event,
+                                                   GstGapFlags * flags);
+
+/* Caps events */
+
+GST_API
+GstEvent *      gst_event_new_caps              (GstCaps *caps) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_caps            (GstEvent *event, GstCaps **caps);
+
+/* segment event */
+
+GST_API
+GstEvent*       gst_event_new_segment           (const GstSegment *segment) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_segment         (GstEvent *event, const GstSegment **segment);
+
+GST_API
+void            gst_event_copy_segment          (GstEvent *event, GstSegment *segment);
+
+/* tag event */
+
+GST_API
+GstEvent*       gst_event_new_tag               (GstTagList *taglist) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_tag             (GstEvent *event, GstTagList **taglist);
+
+/* TOC event */
+
+GST_API
+GstEvent*      gst_event_new_toc                (GstToc *toc, gboolean updated);
+
+GST_API
+void           gst_event_parse_toc              (GstEvent *event, GstToc **toc, gboolean *updated);
+
+/* Protection event */
+
+GST_API
+GstEvent *     gst_event_new_protection         (const gchar * system_id, GstBuffer * data, const gchar * origin);
+
+GST_API
+void           gst_event_parse_protection       (GstEvent * event, const gchar ** system_id,
+                                                 GstBuffer ** data, const gchar ** origin);
+
+/* buffer */
+
+GST_API
+GstEvent *      gst_event_new_buffer_size       (GstFormat format, gint64 minsize, gint64 maxsize,
+                                                 gboolean async) G_GNUC_MALLOC;
+GST_API
+void            gst_event_parse_buffer_size     (GstEvent *event, GstFormat *format, gint64 *minsize,
+                                                 gint64 *maxsize, gboolean *async);
+
+/* sink message */
+
+GST_API
+GstEvent*       gst_event_new_sink_message      (const gchar *name, GstMessage *msg) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_sink_message    (GstEvent *event, GstMessage **msg);
+
+/* QOS events */
+
+GST_API
+GstEvent*       gst_event_new_qos               (GstQOSType type, gdouble proportion,
+                                                 GstClockTimeDiff diff, GstClockTime timestamp) G_GNUC_MALLOC;
+GST_API
+void            gst_event_parse_qos             (GstEvent *event, GstQOSType *type,
+                                                 gdouble *proportion, GstClockTimeDiff *diff,
+                                                 GstClockTime *timestamp);
+/* seek event */
+
+GST_API
+GstEvent*       gst_event_new_seek              (gdouble rate, GstFormat format, GstSeekFlags flags,
+                                                 GstSeekType start_type, gint64 start,
+                                                 GstSeekType stop_type, gint64 stop) G_GNUC_MALLOC;
+GST_API
+void            gst_event_parse_seek            (GstEvent *event, gdouble *rate, GstFormat *format,
+                                                 GstSeekFlags *flags,
+                                                 GstSeekType *start_type, gint64 *start,
+                                                 GstSeekType *stop_type, gint64 *stop);
+
+GST_API
+void            gst_event_set_seek_trickmode_interval (GstEvent *event, GstClockTime interval);
+
+GST_API
+void            gst_event_parse_seek_trickmode_interval (GstEvent *event, GstClockTime *interval);
+
+/* navigation event */
+
+GST_API
+GstEvent*       gst_event_new_navigation        (GstStructure *structure) G_GNUC_MALLOC;
+
+/* latency event */
+
+GST_API
+GstEvent*       gst_event_new_latency           (GstClockTime latency) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_latency         (GstEvent *event, GstClockTime *latency);
+
+/* step event */
+
+GST_API
+GstEvent*       gst_event_new_step              (GstFormat format, guint64 amount, gdouble rate,
+                                                 gboolean flush, gboolean intermediate) G_GNUC_MALLOC;
+GST_API
+void            gst_event_parse_step            (GstEvent *event, GstFormat *format, guint64 *amount,
+                                                 gdouble *rate, gboolean *flush, gboolean *intermediate);
+
+/* renegotiate event */
+
+GST_API
+GstEvent*       gst_event_new_reconfigure       (void) G_GNUC_MALLOC;
+
+/* TOC select event */
+
+GST_API
+GstEvent*       gst_event_new_toc_select        (const gchar *uid) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_toc_select      (GstEvent *event, gchar **uid);
+
+/* segment-done event */
+
+GST_API
+GstEvent*       gst_event_new_segment_done      (GstFormat format, gint64 position) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_segment_done    (GstEvent *event, GstFormat *format, gint64 *position);
+
+/* instant-rate-change event */
+
+GST_API
+GstEvent *      gst_event_new_instant_rate_change   (gdouble rate_multiplier, GstSegmentFlags new_flags) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_instant_rate_change (GstEvent *event,
+                                                     gdouble  *rate_multiplier, GstSegmentFlags *new_flags);
+
+/* instant-rate-change-sync-time event */
+
+GST_API
+GstEvent *      gst_event_new_instant_rate_sync_time   (gdouble      rate_multiplier,
+                                                        GstClockTime running_time,
+                                                        GstClockTime upstream_running_time) G_GNUC_MALLOC;
+
+GST_API
+void            gst_event_parse_instant_rate_sync_time (GstEvent     *event,
+                                                        gdouble      *rate_multiplier,
+                                                        GstClockTime *running_time,
+                                                        GstClockTime *upstream_running_time);
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstEvent, gst_event_unref)
+
+G_END_DECLS
+
+#endif /* __GST_EVENT_H__ */