mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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7a207da733
Avoids doing string<=>quark conversions in the sticky event handling path. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/455>
772 lines
28 KiB
C
772 lines
28 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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* 2005 Wim Taymans <wim@fluendo.com>
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*
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* gstevent.h: Header for GstEvent subsystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_EVENT_H__
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#define __GST_EVENT_H__
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typedef struct _GstEvent GstEvent;
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/**
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* GstEventTypeFlags:
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* @GST_EVENT_TYPE_UPSTREAM: Set if the event can travel upstream.
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* @GST_EVENT_TYPE_DOWNSTREAM: Set if the event can travel downstream.
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* @GST_EVENT_TYPE_SERIALIZED: Set if the event should be serialized with data
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* flow.
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* @GST_EVENT_TYPE_STICKY: Set if the event is sticky on the pads.
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* @GST_EVENT_TYPE_STICKY_MULTI: Multiple sticky events can be on a pad, each
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* identified by the event name.
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*
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* #GstEventTypeFlags indicate the aspects of the different #GstEventType
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* values. You can get the type flags of a #GstEventType with the
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* gst_event_type_get_flags() function.
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*/
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typedef enum {
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GST_EVENT_TYPE_UPSTREAM = 1 << 0,
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GST_EVENT_TYPE_DOWNSTREAM = 1 << 1,
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GST_EVENT_TYPE_SERIALIZED = 1 << 2,
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GST_EVENT_TYPE_STICKY = 1 << 3,
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GST_EVENT_TYPE_STICKY_MULTI = 1 << 4
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} GstEventTypeFlags;
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/**
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* GST_EVENT_TYPE_BOTH: (value 3) (type GstEventTypeFlags)
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*
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* The same thing as #GST_EVENT_TYPE_UPSTREAM | #GST_EVENT_TYPE_DOWNSTREAM.
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*/
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#define GST_EVENT_TYPE_BOTH \
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((GstEventTypeFlags)(GST_EVENT_TYPE_UPSTREAM | GST_EVENT_TYPE_DOWNSTREAM))
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#define GST_EVENT_NUM_SHIFT (8)
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/**
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* GST_EVENT_MAKE_TYPE:
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* @num: the event number to create
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* @flags: the event flags
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*
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* when making custom event types, use this macro with the num and
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* the given flags
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*/
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#define GST_EVENT_MAKE_TYPE(num,flags) \
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(((num) << GST_EVENT_NUM_SHIFT) | (flags))
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#define FLAG(name) GST_EVENT_TYPE_##name
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/**
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* GstEventType:
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* @GST_EVENT_UNKNOWN: unknown event.
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* @GST_EVENT_FLUSH_START: Start a flush operation. This event clears all data
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* from the pipeline and unblock all streaming threads.
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* @GST_EVENT_FLUSH_STOP: Stop a flush operation. This event resets the
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* running-time of the pipeline.
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* @GST_EVENT_SELECT_STREAMS: A request to select one or more streams (Since: 1.10)
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* @GST_EVENT_STREAM_START: Event to mark the start of a new stream. Sent before any
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* other serialized event and only sent at the start of a new stream,
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* not after flushing seeks.
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* @GST_EVENT_CAPS: #GstCaps event. Notify the pad of a new media type.
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* @GST_EVENT_SEGMENT: A new media segment follows in the dataflow. The
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* segment events contains information for clipping buffers and
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* converting buffer timestamps to running-time and
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* stream-time.
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* @GST_EVENT_STREAM_COLLECTION: A new #GstStreamCollection is available (Since: 1.10)
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* @GST_EVENT_TAG: A new set of metadata tags has been found in the stream.
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* @GST_EVENT_BUFFERSIZE: Notification of buffering requirements. Currently not
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* used yet.
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* @GST_EVENT_SINK_MESSAGE: An event that sinks turn into a message. Used to
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* send messages that should be emitted in sync with
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* rendering.
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* @GST_EVENT_STREAM_GROUP_DONE: Indicates that there is no more data for
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* the stream group ID in the message. Sent before EOS
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* in some instances and should be handled mostly the same. (Since: 1.10)
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* @GST_EVENT_EOS: End-Of-Stream. No more data is to be expected to follow
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* without either a STREAM_START event, or a FLUSH_STOP and a SEGMENT
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* event.
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* @GST_EVENT_SEGMENT_DONE: Marks the end of a segment playback.
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* @GST_EVENT_GAP: Marks a gap in the datastream.
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* @GST_EVENT_TOC: An event which indicates that a new table of contents (TOC)
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* was found or updated.
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* @GST_EVENT_PROTECTION: An event which indicates that new or updated
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* encryption information has been found in the stream.
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* @GST_EVENT_QOS: A quality message. Used to indicate to upstream elements
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* that the downstream elements should adjust their processing
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* rate.
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* @GST_EVENT_SEEK: A request for a new playback position and rate.
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* @GST_EVENT_NAVIGATION: Navigation events are usually used for communicating
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* user requests, such as mouse or keyboard movements,
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* to upstream elements.
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* @GST_EVENT_LATENCY: Notification of new latency adjustment. Sinks will use
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* the latency information to adjust their synchronisation.
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* @GST_EVENT_STEP: A request for stepping through the media. Sinks will usually
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* execute the step operation.
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* @GST_EVENT_RECONFIGURE: A request for upstream renegotiating caps and reconfiguring.
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* @GST_EVENT_TOC_SELECT: A request for a new playback position based on TOC
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* entry's UID.
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* @GST_EVENT_INSTANT_RATE_CHANGE: Notify downstream that a playback rate override
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* should be applied as soon as possible. (Since: 1.18)
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* @GST_EVENT_INSTANT_RATE_SYNC_TIME: Sent by the pipeline to notify elements that handle the
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* instant-rate-change event about the running-time when
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* the rate multiplier should be applied (or was applied). (Since: 1.18)
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* @GST_EVENT_CUSTOM_UPSTREAM: Upstream custom event
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* @GST_EVENT_CUSTOM_DOWNSTREAM: Downstream custom event that travels in the
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* data flow.
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* @GST_EVENT_CUSTOM_DOWNSTREAM_OOB: Custom out-of-band downstream event.
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* @GST_EVENT_CUSTOM_DOWNSTREAM_STICKY: Custom sticky downstream event.
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* @GST_EVENT_CUSTOM_BOTH: Custom upstream or downstream event.
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* In-band when travelling downstream.
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* @GST_EVENT_CUSTOM_BOTH_OOB: Custom upstream or downstream out-of-band event.
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*
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* #GstEventType lists the standard event types that can be sent in a pipeline.
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*
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* The custom event types can be used for private messages between elements
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* that can't be expressed using normal
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* GStreamer buffer passing semantics. Custom events carry an arbitrary
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* #GstStructure.
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* Specific custom events are distinguished by the name of the structure.
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*/
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/* NOTE: keep in sync with quark registration in gstevent.c */
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typedef enum {
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GST_EVENT_UNKNOWN = GST_EVENT_MAKE_TYPE (0, 0),
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/* bidirectional events */
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GST_EVENT_FLUSH_START = GST_EVENT_MAKE_TYPE (10, FLAG(BOTH)),
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GST_EVENT_FLUSH_STOP = GST_EVENT_MAKE_TYPE (20, FLAG(BOTH) | FLAG(SERIALIZED)),
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/* downstream serialized events */
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GST_EVENT_STREAM_START = GST_EVENT_MAKE_TYPE (40, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
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GST_EVENT_CAPS = GST_EVENT_MAKE_TYPE (50, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
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GST_EVENT_SEGMENT = GST_EVENT_MAKE_TYPE (70, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
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GST_EVENT_STREAM_COLLECTION = GST_EVENT_MAKE_TYPE (75, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
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GST_EVENT_TAG = GST_EVENT_MAKE_TYPE (80, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
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GST_EVENT_BUFFERSIZE = GST_EVENT_MAKE_TYPE (90, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
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GST_EVENT_SINK_MESSAGE = GST_EVENT_MAKE_TYPE (100, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
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GST_EVENT_STREAM_GROUP_DONE = GST_EVENT_MAKE_TYPE (105, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
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GST_EVENT_EOS = GST_EVENT_MAKE_TYPE (110, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY)),
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GST_EVENT_TOC = GST_EVENT_MAKE_TYPE (120, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
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GST_EVENT_PROTECTION = GST_EVENT_MAKE_TYPE (130, FLAG (DOWNSTREAM) | FLAG (SERIALIZED) | FLAG (STICKY) | FLAG (STICKY_MULTI)),
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/* non-sticky downstream serialized */
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GST_EVENT_SEGMENT_DONE = GST_EVENT_MAKE_TYPE (150, FLAG(DOWNSTREAM) | FLAG(SERIALIZED)),
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GST_EVENT_GAP = GST_EVENT_MAKE_TYPE (160, FLAG(DOWNSTREAM) | FLAG(SERIALIZED)),
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/* sticky downstream non-serialized */
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GST_EVENT_INSTANT_RATE_CHANGE = GST_EVENT_MAKE_TYPE (180, FLAG(DOWNSTREAM) | FLAG(STICKY)),
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/* upstream events */
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GST_EVENT_QOS = GST_EVENT_MAKE_TYPE (190, FLAG(UPSTREAM)),
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GST_EVENT_SEEK = GST_EVENT_MAKE_TYPE (200, FLAG(UPSTREAM)),
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GST_EVENT_NAVIGATION = GST_EVENT_MAKE_TYPE (210, FLAG(UPSTREAM)),
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GST_EVENT_LATENCY = GST_EVENT_MAKE_TYPE (220, FLAG(UPSTREAM)),
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GST_EVENT_STEP = GST_EVENT_MAKE_TYPE (230, FLAG(UPSTREAM)),
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GST_EVENT_RECONFIGURE = GST_EVENT_MAKE_TYPE (240, FLAG(UPSTREAM)),
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GST_EVENT_TOC_SELECT = GST_EVENT_MAKE_TYPE (250, FLAG(UPSTREAM)),
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GST_EVENT_SELECT_STREAMS = GST_EVENT_MAKE_TYPE (260, FLAG(UPSTREAM)),
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GST_EVENT_INSTANT_RATE_SYNC_TIME = GST_EVENT_MAKE_TYPE (261, FLAG(UPSTREAM)),
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/* custom events start here */
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GST_EVENT_CUSTOM_UPSTREAM = GST_EVENT_MAKE_TYPE (270, FLAG(UPSTREAM)),
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GST_EVENT_CUSTOM_DOWNSTREAM = GST_EVENT_MAKE_TYPE (280, FLAG(DOWNSTREAM) | FLAG(SERIALIZED)),
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GST_EVENT_CUSTOM_DOWNSTREAM_OOB = GST_EVENT_MAKE_TYPE (290, FLAG(DOWNSTREAM)),
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GST_EVENT_CUSTOM_DOWNSTREAM_STICKY = GST_EVENT_MAKE_TYPE (300, FLAG(DOWNSTREAM) | FLAG(SERIALIZED) | FLAG(STICKY) | FLAG(STICKY_MULTI)),
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GST_EVENT_CUSTOM_BOTH = GST_EVENT_MAKE_TYPE (310, FLAG(BOTH) | FLAG(SERIALIZED)),
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GST_EVENT_CUSTOM_BOTH_OOB = GST_EVENT_MAKE_TYPE (320, FLAG(BOTH))
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} GstEventType;
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#undef FLAG
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/**
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* GstStreamFlags:
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* @GST_STREAM_FLAG_NONE: This stream has no special attributes
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* @GST_STREAM_FLAG_SPARSE: This stream is a sparse stream (e.g. a subtitle
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* stream), data may flow only in irregular intervals with large gaps in
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* between.
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* @GST_STREAM_FLAG_SELECT: This stream should be selected by default. This
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* flag may be used by demuxers to signal that a stream should be selected
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* by default in a playback scenario.
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* @GST_STREAM_FLAG_UNSELECT: This stream should not be selected by default.
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* This flag may be used by demuxers to signal that a stream should not
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* be selected by default in a playback scenario, but only if explicitly
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* selected by the user (e.g. an audio track for the hard of hearing or
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* a director's commentary track).
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*
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* Since: 1.2
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*/
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typedef enum {
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GST_STREAM_FLAG_NONE,
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GST_STREAM_FLAG_SPARSE = (1 << 0),
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GST_STREAM_FLAG_SELECT = (1 << 1),
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GST_STREAM_FLAG_UNSELECT = (1 << 2)
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} GstStreamFlags;
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#include <gst/gstminiobject.h>
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#include <gst/gstformat.h>
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#include <gst/gstobject.h>
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#include <gst/gstclock.h>
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#include <gst/gststructure.h>
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#include <gst/gsttaglist.h>
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#include <gst/gstsegment.h>
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#include <gst/gstmessage.h>
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#include <gst/gstcontext.h>
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#include <gst/gststreams.h>
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#include <gst/gsttoc.h>
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#include <gst/gststreamcollection.h>
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G_BEGIN_DECLS
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GST_API GType _gst_event_type;
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#define GST_TYPE_EVENT (_gst_event_type)
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#define GST_IS_EVENT(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_EVENT))
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#define GST_EVENT_CAST(obj) ((GstEvent *)(obj))
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#define GST_EVENT(obj) (GST_EVENT_CAST(obj))
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/**
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* GST_EVENT_TYPE:
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* @event: the event to query
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*
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* Get the #GstEventType of the event.
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*/
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#define GST_EVENT_TYPE(event) (GST_EVENT_CAST(event)->type)
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/**
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* GST_EVENT_TYPE_NAME:
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* @event: the event to query
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*
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* Get a constant string representation of the #GstEventType of the event.
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*/
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#define GST_EVENT_TYPE_NAME(event) (gst_event_type_get_name(GST_EVENT_TYPE(event)))
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/**
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* GST_EVENT_TIMESTAMP:
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* @event: the event to query
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*
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* Get the #GstClockTime timestamp of the event. This is the time when the event
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* was created.
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*/
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/* FIXME 2.0: Remove the GstEvent::timestamp field */
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#define GST_EVENT_TIMESTAMP(event) (GST_EVENT_CAST(event)->timestamp)
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/**
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* GST_EVENT_SEQNUM:
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* @event: the event to query
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*
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* The sequence number of @event.
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*/
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#define GST_EVENT_SEQNUM(event) (GST_EVENT_CAST(event)->seqnum)
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/**
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* GST_EVENT_IS_UPSTREAM:
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* @ev: the event to query
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*
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* Check if an event can travel upstream.
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*/
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#define GST_EVENT_IS_UPSTREAM(ev) !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_UPSTREAM)
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/**
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* GST_EVENT_IS_DOWNSTREAM:
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* @ev: the event to query
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*
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* Check if an event can travel downstream.
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*/
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#define GST_EVENT_IS_DOWNSTREAM(ev) !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_DOWNSTREAM)
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/**
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* GST_EVENT_IS_SERIALIZED:
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* @ev: the event to query
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*
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* Check if an event is serialized with the data stream.
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*/
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#define GST_EVENT_IS_SERIALIZED(ev) !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_SERIALIZED)
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/**
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* GST_EVENT_IS_STICKY:
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* @ev: the event to query
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*
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* Check if an event is sticky on the pads.
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*/
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#define GST_EVENT_IS_STICKY(ev) !!(GST_EVENT_TYPE (ev) & GST_EVENT_TYPE_STICKY)
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/**
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* gst_event_is_writable:
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* @ev: a #GstEvent
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*
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* Tests if you can safely write data into a event's structure or validly
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* modify the seqnum and timestamp field.
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*/
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#define gst_event_is_writable(ev) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (ev))
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/**
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* gst_event_make_writable:
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* @ev: (transfer full): a #GstEvent
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*
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* Makes a writable event from the given event. If the source event is
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* already writable, this will simply return the same event. A copy will
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* otherwise be made using gst_event_copy().
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*
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* Returns: (transfer full): a writable event which may or may not be the
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* same as @ev
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*/
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#define gst_event_make_writable(ev) GST_EVENT_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (ev)))
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/**
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* gst_event_replace: (skip)
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* @old_event: (inout) (transfer full) (nullable): pointer to a
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* pointer to a #GstEvent to be replaced.
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* @new_event: (allow-none) (transfer none): pointer to a #GstEvent that will
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* replace the event pointed to by @old_event.
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*
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* Modifies a pointer to a #GstEvent to point to a different #GstEvent. The
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* modification is done atomically (so this is useful for ensuring thread safety
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* in some cases), and the reference counts are updated appropriately (the old
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* event is unreffed, the new one is reffed).
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*
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* Either @new_event or the #GstEvent pointed to by @old_event may be %NULL.
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*
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* Returns: %TRUE if @new_event was different from @old_event
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*/
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static inline gboolean gst_event_replace(GstEvent** old_event, GstEvent* new_event);
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static inline gboolean
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gst_event_replace(GstEvent** old_event, GstEvent* new_event)
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{
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return gst_mini_object_replace ((GstMiniObject **) old_event, (GstMiniObject *) new_event);
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}
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/**
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* gst_event_steal: (skip)
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* @old_event: (inout) (transfer full) (nullable): pointer to a
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* pointer to a #GstEvent to be stolen.
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*
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* Atomically replace the #GstEvent pointed to by @old_event with %NULL and
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* return the original event.
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*
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* Returns: the #GstEvent that was in @old_event
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*/
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static inline GstEvent* gst_event_steal(GstEvent** old_event);
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static inline GstEvent *
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gst_event_steal (GstEvent **old_event)
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{
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return GST_EVENT_CAST (gst_mini_object_steal ((GstMiniObject **) old_event));
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}
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/**
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* gst_event_take: (skip)
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* @old_event: (inout) (transfer full) (nullable): pointer to a
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* pointer to a #GstEvent to be stolen.
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* @new_event: (allow-none) (transfer full): pointer to a #GstEvent that will
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* replace the event pointed to by @old_event.
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*
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* Modifies a pointer to a #GstEvent to point to a different #GstEvent. This
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* function is similar to gst_event_replace() except that it takes ownership of
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* @new_event.
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*
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* Either @new_event or the #GstEvent pointed to by @old_event may be %NULL.
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*
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* Returns: %TRUE if @new_event was different from @old_event
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*/
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static inline gboolean gst_event_take(GstEvent** old_event, GstEvent* new_event);
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static inline gboolean
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gst_event_take (GstEvent **old_event, GstEvent *new_event)
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{
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return gst_mini_object_take ((GstMiniObject **) old_event, (GstMiniObject *) new_event);
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}
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/**
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* GstQOSType:
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* @GST_QOS_TYPE_OVERFLOW: The QoS event type that is produced when upstream
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* elements are producing data too quickly and the element can't keep up
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* processing the data. Upstream should reduce their production rate. This
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* type is also used when buffers arrive early or in time.
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* @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;
|
|
|
|
|
|
/**
|
|
* 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);
|
|
|
|
|
|
/* refcounting */
|
|
/**
|
|
* gst_event_ref: (skip)
|
|
* @event: The event to refcount
|
|
*
|
|
* Increase the refcount of this event.
|
|
*
|
|
* Returns: (transfer full): @event (for convenience when doing assignments)
|
|
*/
|
|
static inline GstEvent* gst_event_ref(GstEvent* event);
|
|
static inline GstEvent *
|
|
gst_event_ref (GstEvent * event)
|
|
{
|
|
return (GstEvent *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (event));
|
|
}
|
|
|
|
/**
|
|
* gst_event_unref: (skip)
|
|
* @event: (transfer full): the event to refcount
|
|
*
|
|
* Decrease the refcount of an event, freeing it if the refcount reaches 0.
|
|
*/
|
|
static inline void gst_event_unref(GstEvent* event);
|
|
static inline void
|
|
gst_event_unref (GstEvent * event)
|
|
{
|
|
gst_mini_object_unref (GST_MINI_OBJECT_CAST (event));
|
|
}
|
|
|
|
/**
|
|
* gst_clear_event: (skip)
|
|
* @event_ptr: a pointer to a #GstEvent reference
|
|
*
|
|
* Clears a reference to a #GstEvent.
|
|
*
|
|
* @event_ptr must not be %NULL.
|
|
*
|
|
* If the reference is %NULL then this function does nothing. Otherwise, the
|
|
* reference count of the event is decreased and the pointer is set to %NULL.
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
static inline void
|
|
gst_clear_event (GstEvent ** event_ptr)
|
|
{
|
|
gst_clear_mini_object ((GstMiniObject **) event_ptr);
|
|
}
|
|
|
|
/* copy event */
|
|
/**
|
|
* gst_event_copy: (skip)
|
|
* @event: The event to copy
|
|
*
|
|
* Copy the event using the event specific copy function.
|
|
*
|
|
* Returns: (transfer full): the new event
|
|
*/
|
|
static inline GstEvent* gst_event_copy(const GstEvent* event);
|
|
static inline GstEvent *
|
|
gst_event_copy (const GstEvent * event)
|
|
{
|
|
return GST_EVENT_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (event)));
|
|
}
|
|
|
|
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);
|
|
|
|
/* 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__ */
|