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647 lines
30 KiB
C
647 lines
30 KiB
C
/* GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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*
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* gstmessage.h: Header for GstMessage 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_MESSAGE_H__
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#define __GST_MESSAGE_H__
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#include <glib.h>
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G_BEGIN_DECLS
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typedef struct _GstMessage GstMessage;
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/**
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* GstMessageType:
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* @GST_MESSAGE_UNKNOWN: an undefined message
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* @GST_MESSAGE_EOS: end-of-stream reached in a pipeline. The application will
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* only receive this message in the PLAYING state and every time it sets a
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* pipeline to PLAYING that is in the EOS state. The application can perform a
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* flushing seek in the pipeline, which will undo the EOS state again.
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* @GST_MESSAGE_ERROR: an error occurred. When the application receives an error
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* message it should stop playback of the pipeline and not assume that more
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* data will be played.
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* @GST_MESSAGE_WARNING: a warning occurred.
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* @GST_MESSAGE_INFO: an info message occurred
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* @GST_MESSAGE_TAG: a tag was found.
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* @GST_MESSAGE_BUFFERING: the pipeline is buffering. When the application
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* receives a buffering message in the PLAYING state for a non-live pipeline it
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* must PAUSE the pipeline until the buffering completes, when the percentage
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* field in the message is 100%. For live pipelines, no action must be
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* performed and the buffering percentage can be used to inform the user about
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* the progress.
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* @GST_MESSAGE_STATE_CHANGED: a state change happened
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* @GST_MESSAGE_STATE_DIRTY: an element changed state in a streaming thread.
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* This message is deprecated.
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* @GST_MESSAGE_STEP_DONE: a stepping operation finished.
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* @GST_MESSAGE_CLOCK_PROVIDE: an element notifies its capability of providing
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* a clock. This message is used internally and
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* never forwarded to the application.
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* @GST_MESSAGE_CLOCK_LOST: The current clock as selected by the pipeline became
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* unusable. The pipeline will select a new clock on
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* the next PLAYING state change. The application
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* should set the pipeline to PAUSED and back to
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* PLAYING when this message is received.
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* @GST_MESSAGE_NEW_CLOCK: a new clock was selected in the pipeline.
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* @GST_MESSAGE_STRUCTURE_CHANGE: the structure of the pipeline changed. This
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* message is used internally and never forwarded to the application.
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* @GST_MESSAGE_STREAM_STATUS: status about a stream, emitted when it starts,
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* stops, errors, etc..
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* @GST_MESSAGE_APPLICATION: message posted by the application, possibly
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* via an application-specific element.
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* @GST_MESSAGE_ELEMENT: element-specific message, see the specific element's
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* documentation
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* @GST_MESSAGE_SEGMENT_START: pipeline started playback of a segment. This
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* message is used internally and never forwarded to the application.
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* @GST_MESSAGE_SEGMENT_DONE: pipeline completed playback of a segment. This
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* message is forwarded to the application after all elements that posted
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* @GST_MESSAGE_SEGMENT_START posted a GST_MESSAGE_SEGMENT_DONE message.
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* @GST_MESSAGE_DURATION_CHANGED: The duration of a pipeline changed. The
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* application can get the new duration with a duration query.
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* @GST_MESSAGE_ASYNC_START: Posted by elements when they start an ASYNC
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* #GstStateChange. This message is not forwarded to the application but is used
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* internally.
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* @GST_MESSAGE_ASYNC_DONE: Posted by elements when they complete an ASYNC
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* #GstStateChange. The application will only receive this message from the toplevel
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* pipeline.
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* @GST_MESSAGE_LATENCY: Posted by elements when their latency changes. The
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* application should recalculate and distribute a new latency.
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* @GST_MESSAGE_REQUEST_STATE: Posted by elements when they want the pipeline to
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* change state. This message is a suggestion to the application which can
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* decide to perform the state change on (part of) the pipeline.
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* @GST_MESSAGE_STEP_START: A stepping operation was started.
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* @GST_MESSAGE_QOS: A buffer was dropped or an element changed its processing
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* strategy for Quality of Service reasons.
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* @GST_MESSAGE_PROGRESS: A progress message.
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* @GST_MESSAGE_TOC: A new table of contents (TOC) was found or previously found TOC
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* was updated.
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* @GST_MESSAGE_RESET_TIME: Message to request resetting the pipeline's
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* running time from the pipeline. This is an internal message which
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* applications will likely never receive.
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* @GST_MESSAGE_STREAM_START: Message indicating start of a new stream. Useful
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* e.g. when using playbin in gapless playback mode, to get notified when
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* the next title actually starts playing (which will be some time after
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* the URI for the next title has been set).
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* @GST_MESSAGE_NEED_CONTEXT: Message indicating that an element wants a specific context (Since 1.2)
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* @GST_MESSAGE_HAVE_CONTEXT: Message indicating that an element created a context (Since 1.2)
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* @GST_MESSAGE_EXTENDED: Message is an extended message type (see below).
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* These extended message IDs can't be used directly with mask-based API
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* like gst_bus_poll() or gst_bus_timed_pop_filtered(), but you can still
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* filter for GST_MESSAGE_EXTENDED and then check the result for the
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* specific type. (Since 1.4)
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* @GST_MESSAGE_DEVICE_ADDED: Message indicating a #GstDevice was added to
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* a #GstDeviceProvider (Since 1.4)
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* @GST_MESSAGE_DEVICE_REMOVED: Message indicating a #GstDevice was removed
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* from a #GstDeviceProvider (Since 1.4)
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* @GST_MESSAGE_PROPERTY_NOTIFY: Message indicating a #GObject property has
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* changed (Since 1.10)
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* @GST_MESSAGE_STREAM_COLLECTION: Message indicating a new #GstStreamCollection
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* is available (Since 1.10)
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* @GST_MESSAGE_STREAMS_SELECTED: Message indicating the active selection of
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* #GstStreams has changed (Since 1.10)
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* @GST_MESSAGE_REDIRECT: Message indicating to request the application to
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* try to play the given URL(s). Useful if for example a HTTP 302/303
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* response is received with a non-HTTP URL inside. (Since 1.10)
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* @GST_MESSAGE_ANY: mask for all of the above messages.
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*
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* The different message types that are available.
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*/
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/* NOTE: keep in sync with quark registration in gstmessage.c
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* NOTE: keep GST_MESSAGE_ANY a valid gint to avoid compiler warnings.
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*/
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/* FIXME: 2.0: Make it NOT flags, just a regular 1,2,3,4.. enumeration */
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/* FIXME: For GST_MESSAGE_ANY ~0 -> 0xffffffff see
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* https://bugzilla.gnome.org/show_bug.cgi?id=732633
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*/
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typedef enum
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{
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GST_MESSAGE_UNKNOWN = 0,
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GST_MESSAGE_EOS = (1 << 0),
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GST_MESSAGE_ERROR = (1 << 1),
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GST_MESSAGE_WARNING = (1 << 2),
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GST_MESSAGE_INFO = (1 << 3),
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GST_MESSAGE_TAG = (1 << 4),
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GST_MESSAGE_BUFFERING = (1 << 5),
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GST_MESSAGE_STATE_CHANGED = (1 << 6),
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GST_MESSAGE_STATE_DIRTY = (1 << 7),
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GST_MESSAGE_STEP_DONE = (1 << 8),
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GST_MESSAGE_CLOCK_PROVIDE = (1 << 9),
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GST_MESSAGE_CLOCK_LOST = (1 << 10),
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GST_MESSAGE_NEW_CLOCK = (1 << 11),
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GST_MESSAGE_STRUCTURE_CHANGE = (1 << 12),
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GST_MESSAGE_STREAM_STATUS = (1 << 13),
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GST_MESSAGE_APPLICATION = (1 << 14),
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GST_MESSAGE_ELEMENT = (1 << 15),
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GST_MESSAGE_SEGMENT_START = (1 << 16),
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GST_MESSAGE_SEGMENT_DONE = (1 << 17),
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GST_MESSAGE_DURATION_CHANGED = (1 << 18),
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GST_MESSAGE_LATENCY = (1 << 19),
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GST_MESSAGE_ASYNC_START = (1 << 20),
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GST_MESSAGE_ASYNC_DONE = (1 << 21),
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GST_MESSAGE_REQUEST_STATE = (1 << 22),
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GST_MESSAGE_STEP_START = (1 << 23),
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GST_MESSAGE_QOS = (1 << 24),
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GST_MESSAGE_PROGRESS = (1 << 25),
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GST_MESSAGE_TOC = (1 << 26),
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GST_MESSAGE_RESET_TIME = (1 << 27),
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GST_MESSAGE_STREAM_START = (1 << 28),
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GST_MESSAGE_NEED_CONTEXT = (1 << 29),
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GST_MESSAGE_HAVE_CONTEXT = (1 << 30),
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GST_MESSAGE_EXTENDED = (gint) (1u << 31),
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GST_MESSAGE_DEVICE_ADDED = GST_MESSAGE_EXTENDED + 1,
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GST_MESSAGE_DEVICE_REMOVED = GST_MESSAGE_EXTENDED + 2,
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GST_MESSAGE_PROPERTY_NOTIFY = GST_MESSAGE_EXTENDED + 3,
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GST_MESSAGE_STREAM_COLLECTION = GST_MESSAGE_EXTENDED + 4,
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GST_MESSAGE_STREAMS_SELECTED = GST_MESSAGE_EXTENDED + 5,
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GST_MESSAGE_REDIRECT = GST_MESSAGE_EXTENDED + 6,
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GST_MESSAGE_ANY = (gint) (0xffffffff)
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} GstMessageType;
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#include <gst/gstminiobject.h>
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#include <gst/gstobject.h>
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#include <gst/gstelement.h>
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#include <gst/gsttaglist.h>
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#include <gst/gststructure.h>
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#include <gst/gstquery.h>
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#include <gst/gsttoc.h>
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#include <gst/gstdevice.h>
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#include <gst/gststreams.h>
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#include <gst/gststreamcollection.h>
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GST_EXPORT GType _gst_message_type;
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#define GST_TYPE_MESSAGE (_gst_message_type)
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#define GST_IS_MESSAGE(obj) (GST_IS_MINI_OBJECT_TYPE (obj, GST_TYPE_MESSAGE))
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#define GST_MESSAGE_CAST(obj) ((GstMessage*)(obj))
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#define GST_MESSAGE(obj) (GST_MESSAGE_CAST(obj))
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/* the lock is used to handle the synchronous handling of messages,
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* the emiting thread is block until the handling thread processed
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* the message using this mutex/cond pair */
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#define GST_MESSAGE_GET_LOCK(message) (&GST_MESSAGE_CAST(message)->lock)
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#define GST_MESSAGE_LOCK(message) g_mutex_lock(GST_MESSAGE_GET_LOCK(message))
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#define GST_MESSAGE_UNLOCK(message) g_mutex_unlock(GST_MESSAGE_GET_LOCK(message))
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#define GST_MESSAGE_GET_COND(message) (&GST_MESSAGE_CAST(message)->cond)
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#define GST_MESSAGE_WAIT(message) g_cond_wait(GST_MESSAGE_GET_COND(message),GST_MESSAGE_GET_LOCK(message))
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#define GST_MESSAGE_SIGNAL(message) g_cond_signal(GST_MESSAGE_GET_COND(message))
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/**
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* GST_MESSAGE_TYPE:
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* @message: a #GstMessage
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*
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* Get the #GstMessageType of @message.
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*/
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#define GST_MESSAGE_TYPE(message) (GST_MESSAGE_CAST(message)->type)
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/**
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* GST_MESSAGE_TYPE_IS_EXTENDED:
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* @message: a #GstMessage
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*
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* Check if the message is in the extended message group
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* Since: 1.4
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*/
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#define GST_MESSAGE_TYPE_IS_EXTENDED(message) (!!(GST_MESSAGE_CAST(message)->type & GST_MESSAGE_EXTENDED))
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/**
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* GST_MESSAGE_TYPE_NAME:
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* @message: a #GstMessage
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*
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* Get a constant string representation of the #GstMessageType of @message.
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*/
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#define GST_MESSAGE_TYPE_NAME(message) gst_message_type_get_name(GST_MESSAGE_TYPE(message))
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/**
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* GST_MESSAGE_TIMESTAMP:
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* @message: a #GstMessage
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*
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* Get the timestamp of @message. This is the timestamp when the message
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* was created.
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*/
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#define GST_MESSAGE_TIMESTAMP(message) (GST_MESSAGE_CAST(message)->timestamp)
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/**
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* GST_MESSAGE_SRC:
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* @message: a #GstMessage
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*
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* Get the object that posted @message.
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*/
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#define GST_MESSAGE_SRC(message) (GST_MESSAGE_CAST(message)->src)
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/**
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* GST_MESSAGE_SEQNUM:
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* @message: a #GstMessage
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*
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* Get the sequence number of @message.
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*/
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#define GST_MESSAGE_SEQNUM(message) (GST_MESSAGE_CAST(message)->seqnum)
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/**
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* GST_MESSAGE_SRC_NAME:
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* @message: a #GstMessage
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*
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* Get the name of the object that posted @message. Returns "(NULL)" if
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* the message has no source object set.
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*/
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#define GST_MESSAGE_SRC_NAME(message) (GST_MESSAGE_SRC(message) ? \
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GST_OBJECT_NAME (GST_MESSAGE_SRC(message)) : "(NULL)")
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/**
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* GstStructureChangeType:
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* @GST_STRUCTURE_CHANGE_TYPE_PAD_LINK: Pad linking is starting or done.
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* @GST_STRUCTURE_CHANGE_TYPE_PAD_UNLINK: Pad unlinking is starting or done.
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*
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* The type of a %GST_MESSAGE_STRUCTURE_CHANGE.
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*/
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typedef enum {
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GST_STRUCTURE_CHANGE_TYPE_PAD_LINK = 0,
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GST_STRUCTURE_CHANGE_TYPE_PAD_UNLINK = 1
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} GstStructureChangeType;
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/**
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* GstStreamStatusType:
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* @GST_STREAM_STATUS_TYPE_CREATE: A new thread need to be created.
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* @GST_STREAM_STATUS_TYPE_ENTER: a thread entered its loop function
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* @GST_STREAM_STATUS_TYPE_LEAVE: a thread left its loop function
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* @GST_STREAM_STATUS_TYPE_DESTROY: a thread is destroyed
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* @GST_STREAM_STATUS_TYPE_START: a thread is started
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* @GST_STREAM_STATUS_TYPE_PAUSE: a thread is paused
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* @GST_STREAM_STATUS_TYPE_STOP: a thread is stopped
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*
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* The type of a %GST_MESSAGE_STREAM_STATUS. The stream status messages inform the
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* application of new streaming threads and their status.
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*/
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typedef enum {
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GST_STREAM_STATUS_TYPE_CREATE = 0,
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GST_STREAM_STATUS_TYPE_ENTER = 1,
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GST_STREAM_STATUS_TYPE_LEAVE = 2,
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GST_STREAM_STATUS_TYPE_DESTROY = 3,
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GST_STREAM_STATUS_TYPE_START = 8,
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GST_STREAM_STATUS_TYPE_PAUSE = 9,
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GST_STREAM_STATUS_TYPE_STOP = 10
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} GstStreamStatusType;
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/**
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* GstProgressType:
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* @GST_PROGRESS_TYPE_START: A new task started.
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* @GST_PROGRESS_TYPE_CONTINUE: A task completed and a new one continues.
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* @GST_PROGRESS_TYPE_COMPLETE: A task completed.
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* @GST_PROGRESS_TYPE_CANCELED: A task was canceled.
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* @GST_PROGRESS_TYPE_ERROR: A task caused an error. An error message is also
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* posted on the bus.
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*
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* The type of a %GST_MESSAGE_PROGRESS. The progress messages inform the
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* application of the status of asynchronous tasks.
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*/
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typedef enum {
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GST_PROGRESS_TYPE_START = 0,
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GST_PROGRESS_TYPE_CONTINUE = 1,
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GST_PROGRESS_TYPE_COMPLETE = 2,
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GST_PROGRESS_TYPE_CANCELED = 3,
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GST_PROGRESS_TYPE_ERROR = 4
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} GstProgressType;
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/**
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* GstMessage:
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* @mini_object: the parent structure
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* @type: the #GstMessageType of the message
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* @timestamp: the timestamp of the message
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* @src: the src of the message
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* @seqnum: the sequence number of the message
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*
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* A #GstMessage.
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*/
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struct _GstMessage
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{
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GstMiniObject mini_object;
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/*< public > *//* with COW */
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GstMessageType type;
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guint64 timestamp;
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GstObject *src;
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guint32 seqnum;
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/*< private >*//* with MESSAGE_LOCK */
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GMutex lock; /* lock and cond for async delivery */
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GCond cond;
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};
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#include <gst/gstquery.h>
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GType gst_message_get_type (void);
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const gchar* gst_message_type_get_name (GstMessageType type);
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GQuark gst_message_type_to_quark (GstMessageType type);
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/* refcounting */
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/**
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* gst_message_ref:
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* @msg: the message to ref
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*
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* Convenience macro to increase the reference count of the message.
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*
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* Returns: @msg (for convenience when doing assignments)
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*/
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static inline GstMessage *
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gst_message_ref (GstMessage * msg)
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{
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return (GstMessage *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (msg));
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}
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/**
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* gst_message_unref:
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* @msg: the message to unref
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*
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* Convenience macro to decrease the reference count of the message, possibly
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* freeing it.
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*/
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static inline void
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gst_message_unref (GstMessage * msg)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (msg));
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}
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/* copy message */
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/**
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* gst_message_copy:
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* @msg: the message to copy
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*
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* Creates a copy of the message. Returns a copy of the message.
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*
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* Returns: (transfer full): a new copy of @msg.
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*
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* MT safe
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*/
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static inline GstMessage *
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gst_message_copy (const GstMessage * msg)
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{
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return GST_MESSAGE_CAST (gst_mini_object_copy (GST_MINI_OBJECT_CONST_CAST (msg)));
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}
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/**
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* gst_message_is_writable:
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* @msg: a #GstMessage
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*
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* Tests if you can safely write into a message's structure or validly
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* modify the seqnum and timestamp fields.
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*/
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#define gst_message_is_writable(msg) gst_mini_object_is_writable (GST_MINI_OBJECT_CAST (msg))
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/**
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* gst_message_make_writable:
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* @msg: (transfer full): the message to make writable
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*
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* Checks if a message is writable. If not, a writable copy is made and
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* returned.
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*
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* Returns: (transfer full): a message (possibly a duplicate) that is writable.
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*
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* MT safe
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*/
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#define gst_message_make_writable(msg) GST_MESSAGE_CAST (gst_mini_object_make_writable (GST_MINI_OBJECT_CAST (msg)))
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/**
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* gst_message_replace:
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* @old_message: (inout) (transfer full) (nullable): pointer to a
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* pointer to a #GstMessage to be replaced.
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* @new_message: (allow-none) (transfer none): pointer to a #GstMessage that will
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* replace the message pointed to by @old_message.
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*
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* Modifies a pointer to a #GstMessage to point to a different #GstMessage. 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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* message is unreffed, the new one is reffed).
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*
|
|
* Either @new_message or the #GstMessage pointed to by @old_message may be %NULL.
|
|
*
|
|
* Returns: %TRUE if @new_message was different from @old_message
|
|
*/
|
|
static inline gboolean
|
|
gst_message_replace (GstMessage **old_message, GstMessage *new_message)
|
|
{
|
|
return gst_mini_object_replace ((GstMiniObject **) old_message, (GstMiniObject *) new_message);
|
|
}
|
|
|
|
|
|
/* custom messages */
|
|
GstMessage * gst_message_new_custom (GstMessageType type,
|
|
GstObject * src,
|
|
GstStructure * structure) G_GNUC_MALLOC;
|
|
const GstStructure *
|
|
gst_message_get_structure (GstMessage *message);
|
|
|
|
gboolean gst_message_has_name (GstMessage *message, const gchar *name);
|
|
|
|
/* identifiers for events and messages */
|
|
guint32 gst_message_get_seqnum (GstMessage *message);
|
|
void gst_message_set_seqnum (GstMessage *message, guint32 seqnum);
|
|
|
|
/* EOS */
|
|
GstMessage * gst_message_new_eos (GstObject * src) G_GNUC_MALLOC;
|
|
|
|
/* ERROR */
|
|
|
|
GstMessage * gst_message_new_error (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
|
|
GstMessage * gst_message_new_error_with_details (GstObject * src, GError * error, const gchar * debug, GstStructure * details) G_GNUC_MALLOC;
|
|
void gst_message_parse_error (GstMessage *message, GError **gerror, gchar **debug);
|
|
void gst_message_parse_error_details (GstMessage *message, const GstStructure **structure);
|
|
|
|
/* WARNING */
|
|
GstMessage * gst_message_new_warning (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
|
|
GstMessage * gst_message_new_warning_with_details (GstObject * src, GError * error, const gchar * debug, GstStructure * details) G_GNUC_MALLOC;
|
|
void gst_message_parse_warning (GstMessage *message, GError **gerror, gchar **debug);
|
|
void gst_message_parse_warning_details (GstMessage *message, const GstStructure **structure);
|
|
|
|
/* INFO */
|
|
GstMessage * gst_message_new_info (GstObject * src, GError * error, const gchar * debug) G_GNUC_MALLOC;
|
|
GstMessage * gst_message_new_info_with_details (GstObject * src, GError * error, const gchar * debug, GstStructure * details) G_GNUC_MALLOC;
|
|
void gst_message_parse_info (GstMessage *message, GError **gerror, gchar **debug);
|
|
void gst_message_parse_info_details (GstMessage *message, const GstStructure **structure);
|
|
|
|
/* TAG */
|
|
GstMessage * gst_message_new_tag (GstObject * src, GstTagList * tag_list) G_GNUC_MALLOC;
|
|
void gst_message_parse_tag (GstMessage *message, GstTagList **tag_list);
|
|
|
|
/* BUFFERING */
|
|
GstMessage * gst_message_new_buffering (GstObject * src, gint percent) G_GNUC_MALLOC;
|
|
void gst_message_parse_buffering (GstMessage *message, gint *percent);
|
|
void gst_message_set_buffering_stats (GstMessage *message, GstBufferingMode mode,
|
|
gint avg_in, gint avg_out,
|
|
gint64 buffering_left);
|
|
void gst_message_parse_buffering_stats (GstMessage *message, GstBufferingMode *mode,
|
|
gint *avg_in, gint *avg_out,
|
|
gint64 *buffering_left);
|
|
|
|
/* STATE_CHANGED */
|
|
GstMessage * gst_message_new_state_changed (GstObject * src, GstState oldstate,
|
|
GstState newstate, GstState pending) G_GNUC_MALLOC;
|
|
void gst_message_parse_state_changed (GstMessage *message, GstState *oldstate,
|
|
GstState *newstate, GstState *pending);
|
|
|
|
/* STATE_DIRTY */
|
|
GstMessage * gst_message_new_state_dirty (GstObject * src) G_GNUC_MALLOC;
|
|
|
|
/* STEP_DONE */
|
|
GstMessage * gst_message_new_step_done (GstObject * src, GstFormat format, guint64 amount,
|
|
gdouble rate, gboolean flush, gboolean intermediate,
|
|
guint64 duration, gboolean eos) G_GNUC_MALLOC;
|
|
void gst_message_parse_step_done (GstMessage * message, GstFormat *format, guint64 *amount,
|
|
gdouble *rate, gboolean *flush, gboolean *intermediate,
|
|
guint64 *duration, gboolean *eos);
|
|
/* CLOCK_PROVIDE */
|
|
GstMessage * gst_message_new_clock_provide (GstObject * src, GstClock *clock, gboolean ready) G_GNUC_MALLOC;
|
|
void gst_message_parse_clock_provide (GstMessage *message, GstClock **clock,
|
|
gboolean *ready);
|
|
|
|
/* CLOCK_LOST */
|
|
GstMessage * gst_message_new_clock_lost (GstObject * src, GstClock *clock) G_GNUC_MALLOC;
|
|
void gst_message_parse_clock_lost (GstMessage *message, GstClock **clock);
|
|
|
|
/* NEW_CLOCK */
|
|
GstMessage * gst_message_new_new_clock (GstObject * src, GstClock *clock) G_GNUC_MALLOC;
|
|
void gst_message_parse_new_clock (GstMessage *message, GstClock **clock);
|
|
|
|
/* APPLICATION */
|
|
GstMessage * gst_message_new_application (GstObject * src, GstStructure * structure) G_GNUC_MALLOC;
|
|
|
|
/* ELEMENT */
|
|
GstMessage * gst_message_new_element (GstObject * src, GstStructure * structure) G_GNUC_MALLOC;
|
|
|
|
/* SEGMENT_START */
|
|
GstMessage * gst_message_new_segment_start (GstObject * src, GstFormat format, gint64 position) G_GNUC_MALLOC;
|
|
void gst_message_parse_segment_start (GstMessage *message, GstFormat *format,
|
|
gint64 *position);
|
|
|
|
/* SEGMENT_DONE */
|
|
GstMessage * gst_message_new_segment_done (GstObject * src, GstFormat format, gint64 position) G_GNUC_MALLOC;
|
|
void gst_message_parse_segment_done (GstMessage *message, GstFormat *format,
|
|
gint64 *position);
|
|
|
|
/* DURATION_CHANGED */
|
|
GstMessage * gst_message_new_duration_changed (GstObject * src) G_GNUC_MALLOC;
|
|
|
|
/* LATENCY */
|
|
GstMessage * gst_message_new_latency (GstObject * src) G_GNUC_MALLOC;
|
|
|
|
/* ASYNC_START */
|
|
GstMessage * gst_message_new_async_start (GstObject * src) G_GNUC_MALLOC;
|
|
|
|
/* ASYNC_DONE */
|
|
GstMessage * gst_message_new_async_done (GstObject * src, GstClockTime running_time) G_GNUC_MALLOC;
|
|
void gst_message_parse_async_done (GstMessage *message, GstClockTime *running_time);
|
|
|
|
/* STRUCTURE CHANGE */
|
|
GstMessage * gst_message_new_structure_change (GstObject * src, GstStructureChangeType type,
|
|
GstElement *owner, gboolean busy) G_GNUC_MALLOC;
|
|
void gst_message_parse_structure_change (GstMessage *message, GstStructureChangeType *type,
|
|
GstElement **owner, gboolean *busy);
|
|
|
|
/* STREAM STATUS */
|
|
GstMessage * gst_message_new_stream_status (GstObject * src, GstStreamStatusType type,
|
|
GstElement *owner) G_GNUC_MALLOC;
|
|
void gst_message_parse_stream_status (GstMessage *message, GstStreamStatusType *type,
|
|
GstElement **owner);
|
|
void gst_message_set_stream_status_object (GstMessage *message, const GValue *object);
|
|
const GValue * gst_message_get_stream_status_object (GstMessage *message);
|
|
|
|
/* REQUEST_STATE */
|
|
GstMessage * gst_message_new_request_state (GstObject * src, GstState state) G_GNUC_MALLOC;
|
|
void gst_message_parse_request_state (GstMessage * message, GstState *state);
|
|
|
|
/* STEP_START */
|
|
GstMessage * gst_message_new_step_start (GstObject * src, gboolean active, GstFormat format,
|
|
guint64 amount, gdouble rate, gboolean flush,
|
|
gboolean intermediate) G_GNUC_MALLOC;
|
|
void gst_message_parse_step_start (GstMessage * message, gboolean *active, GstFormat *format,
|
|
guint64 *amount, gdouble *rate, gboolean *flush,
|
|
gboolean *intermediate);
|
|
|
|
/* QOS */
|
|
GstMessage * gst_message_new_qos (GstObject * src, gboolean live, guint64 running_time,
|
|
guint64 stream_time, guint64 timestamp, guint64 duration) G_GNUC_MALLOC;
|
|
void gst_message_set_qos_values (GstMessage * message, gint64 jitter, gdouble proportion,
|
|
gint quality);
|
|
void gst_message_set_qos_stats (GstMessage * message, GstFormat format, guint64 processed,
|
|
guint64 dropped);
|
|
void gst_message_parse_qos (GstMessage * message, gboolean * live, guint64 * running_time,
|
|
guint64 * stream_time, guint64 * timestamp, guint64 * duration);
|
|
void gst_message_parse_qos_values (GstMessage * message, gint64 * jitter, gdouble * proportion,
|
|
gint * quality);
|
|
void gst_message_parse_qos_stats (GstMessage * message, GstFormat * format, guint64 * processed,
|
|
guint64 * dropped);
|
|
/* PROGRESS */
|
|
GstMessage * gst_message_new_progress (GstObject * src, GstProgressType type, const gchar *code,
|
|
const gchar *text) G_GNUC_MALLOC;
|
|
void gst_message_parse_progress (GstMessage * message, GstProgressType * type, gchar ** code,
|
|
gchar ** text);
|
|
|
|
/* TOC */
|
|
GstMessage * gst_message_new_toc (GstObject *src, GstToc *toc, gboolean updated);
|
|
void gst_message_parse_toc (GstMessage *message, GstToc **toc, gboolean *updated);
|
|
|
|
/* RESET_TIME */
|
|
GstMessage * gst_message_new_reset_time (GstObject * src, GstClockTime running_time) G_GNUC_MALLOC;
|
|
void gst_message_parse_reset_time (GstMessage *message, GstClockTime *running_time);
|
|
|
|
/* STREAM_START */
|
|
GstMessage * gst_message_new_stream_start (GstObject * src) G_GNUC_MALLOC;
|
|
|
|
void gst_message_set_group_id (GstMessage *message, guint group_id);
|
|
gboolean gst_message_parse_group_id (GstMessage *message, guint *group_id);
|
|
|
|
/* NEED_CONTEXT */
|
|
GstMessage * gst_message_new_need_context (GstObject * src, const gchar * context_type) G_GNUC_MALLOC;
|
|
gboolean gst_message_parse_context_type (GstMessage * message, const gchar ** context_type);
|
|
|
|
/* HAVE_CONTEXT */
|
|
GstMessage * gst_message_new_have_context (GstObject * src, GstContext *context) G_GNUC_MALLOC;
|
|
void gst_message_parse_have_context (GstMessage *message, GstContext **context);
|
|
|
|
/* DEVICE_ADDED */
|
|
GstMessage * gst_message_new_device_added (GstObject * src, GstDevice * device) G_GNUC_MALLOC;
|
|
void gst_message_parse_device_added (GstMessage * message, GstDevice ** device);
|
|
|
|
/* DEVICE_REMOVED */
|
|
GstMessage * gst_message_new_device_removed (GstObject * src, GstDevice * device) G_GNUC_MALLOC;
|
|
void gst_message_parse_device_removed (GstMessage * message, GstDevice ** device);
|
|
|
|
/* PROPERTY_NOTIFY */
|
|
GstMessage * gst_message_new_property_notify (GstObject * src, const gchar * property_name, GValue * val) G_GNUC_MALLOC;
|
|
void gst_message_parse_property_notify (GstMessage * message, GstObject ** object, const gchar ** property_name, const GValue ** property_value);
|
|
|
|
/* STREAM_COLLECTION */
|
|
GstMessage * gst_message_new_stream_collection (GstObject * src, GstStreamCollection * collection) G_GNUC_MALLOC;
|
|
void gst_message_parse_stream_collection (GstMessage *message, GstStreamCollection **collection);
|
|
|
|
/* STREAMS_SELECTED */
|
|
GstMessage * gst_message_new_streams_selected (GstObject *src, GstStreamCollection *collection);
|
|
void gst_message_streams_selected_add (GstMessage *message, GstStream *stream);
|
|
void gst_message_parse_streams_selected (GstMessage * message, GstStreamCollection **collection);
|
|
guint gst_message_streams_selected_get_size (GstMessage * message);
|
|
GstStream *gst_message_streams_selected_get_stream (GstMessage *message, guint idx);
|
|
|
|
/* REDIRECT */
|
|
GstMessage * gst_message_new_redirect (GstObject * src, const gchar * location, GstTagList * tag_list, const GstStructure * entry_struct) G_GNUC_MALLOC;
|
|
void gst_message_add_redirect_entry (GstMessage * message, const gchar * location, GstTagList * tag_list, const GstStructure * entry_struct);
|
|
void gst_message_parse_redirect_entry (GstMessage * message, gsize entry_index, const gchar ** location, GstTagList ** tag_list, const GstStructure ** entry_struct);
|
|
gsize gst_message_get_num_redirect_entries (GstMessage * message);
|
|
|
|
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstMessage, gst_message_unref)
|
|
#endif
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_MESSAGE_H__ */
|