A structure change message. More...

#include <gstreamermm/message.h>

Inheritance diagram for Gst::MessageStructureChange:

Public Member Functions
void	parse (Gst::StructureChangeType& type, Glib::RefPtr< Gst::Element >& owner, bool& busy) const
	Extracts the change type and completion status from the Gst::Message. More...

Gst::StructureChangeType	parse_type () const
	Extracts the change type from the Gs::tMessage. More...

Glib::RefPtr< Gst::Element >	parse_owner () const
	Extracts the owner from the Gst::Message. More...

bool	parse_busy () const
	Extracts the completion status from the Gst::Message. More...

Public Member Functions inherited from Gst::Message
void	reference () const
	Increment the reference count for this object. More...

void	unreference () const
	Decrement the reference count for this object. More...

GstMessage*	gobj ()
	Provides access to the underlying C instance. More...

const GstMessage*	gobj () const
	Provides access to the underlying C instance. More...

GstMessage*	gobj_copy () const
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...

	Message ()=delete

	Message (const Message&)=delete

Message&	operator= (const Message&)=delete

Gst::Structure	get_structure () const
	Access the structure of the message. More...

Glib::RefPtr< Gst::Message >	create_writable ()
	Checks if a message is writable. More...

guint32	get_seqnum () const
	Retrieve the sequence number of a message. More...

void	set_seqnum (guint32 seqnum)
	Set the sequence number of a message. More...

Glib::RefPtr< Gst::Message >	copy () const
	Creates a copy of the message. More...

MessageType	get_message_type () const
	Get the GstMessageType of message. More...

Gst::ClockTime	get_timestamp () const
	Get the timestamp of message. More...

Glib::RefPtr< Gst::Object >	get_source ()
	Get the object that posted the message. More...

Glib::RefPtr< const Gst::Object >	get_source () const

bool	has_name (const Glib::ustring& name) const
	Checks if message has the given name. More...

Public Member Functions inherited from Gst::MiniObject
void	reference () const
	Increment the reference count for this object. More...

void	unreference () const
	Decrement the reference count for this object. More...

GstMiniObject*	gobj ()
	Provides access to the underlying C instance. More...

const GstMiniObject*	gobj () const
	Provides access to the underlying C instance. More...

GstMiniObject*	gobj_copy () const
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...

	MiniObject ()=delete

	MiniObject (const MiniObject&)=delete

MiniObject&	operator= (const MiniObject&)=delete

	~MiniObject ()

guint	get_flags () const

void	set_flags (const guint& value)

gint	get_refcount () const

gint	get_lockstate () const

bool	lock (LockFlags flags)
	Lock the mini-object with the specified access mode in flags. More...

void	unlock (LockFlags flags)
	Unlock the mini-object with the specified access mode in flags. More...

bool	is_writable () const
	If mini_object has the LOCKABLE flag set, check if the current EXCLUSIVE lock on object is the only one, this means that changes to the object will not be visible to any other object. More...

Glib::RefPtr< MiniObject >	create_writable ()
	Checks if a mini-object is writable. More...

void	set_qdata (GQuark quark, QuarkData* data)
	This sets an opaque, named pointer on a miniobject. More...

QuarkData*	get_qdata (GQuark quark) const
	This function gets back user data pointers stored via set_qdata(). More...

QuarkData*	steal_qdata (GQuark quark)
	This function gets back user data pointers stored via set_qdata() and removes the data from object without invoking its destroy() function (if any was set). More...

void	add_finalize_notifier (const SlotFinalizer& slot)
	Adds notifier when mini object is finalized. More...

void	remove_finalize_notifier ()
	Remove finalize notifier. More...

Static Public Member Functions
static Glib::RefPtr< Gst::MessageStructureChange >	create (const Glib::RefPtr< Gst::Object >& src, Gst::StructureChangeType type, const Glib::RefPtr< Gst::Element >& owner, bool busy)
	Create a new structure change message. More...

Additional Inherited Members
Public Types inherited from Gst::MiniObject
typedef sigc::slot< void >	SlotFinalizer

Protected Member Functions inherited from Gst::Message
void	operator delete (void*, std::size_t)

Protected Member Functions inherited from Gst::MiniObject
void	operator delete (void*, std::size_t)

Related Functions inherited from Gst::Message
Glib::RefPtr< Gst::Message >	wrap (GstMessage* object, bool take_copy=false)
	A Glib::wrap() method for this object. More...

Related Functions inherited from Gst::MiniObject
Glib::RefPtr< Gst::MiniObject >	wrap (GstMiniObject* object, bool take_copy=false)
	A Glib::wrap() method for this object. More...

Detailed Description

A structure change message.

See create() for more details.

Member Function Documentation

◆ create()

static Glib::RefPtr<Gst::MessageStructureChange> Gst::MessageStructureChange::create	(	const Glib::RefPtr< Gst::Object >&	src,
		Gst::StructureChangeType	type,
		const Glib::RefPtr< Gst::Element >&	owner,
		bool	busy
	)

static

Create a new structure change message.

This message is posted when the structure of a pipeline is in the process of being changed, for example when pads are linked or unlinked.

src should be the sinkpad that unlinked or linked.

Parameters

src	The object originating the message.
type	The change type.
owner	The owner element of src.
busy	Whether the structure change is busy.

Returns: The new structure change message.

MT safe.

◆ parse()

void Gst::MessageStructureChange::parse	(	Gst::StructureChangeType&	type,
		Glib::RefPtr< Gst::Element >&	owner,
		bool &	busy
	)		const

Extracts the change type and completion status from the Gst::Message.

MT safe.

Parameters

type	A reference to hold the change type.
owner	The owner element of the message source.
busy	A reference to hold whether the change is in progress or has been completed.

Since 0.10.22.

◆ parse_busy()

bool Gst::MessageStructureChange::parse_busy ( ) const

Extracts the completion status from the Gst::Message.

MT safe.

Returns: whether the change is in progress or has been completed.

Since 0.10.22.

◆ parse_owner()

Glib::RefPtr<Gst::Element> Gst::MessageStructureChange::parse_owner ( ) const

Extracts the owner from the Gst::Message.

MT safe.

Returns: The owner element of the message source.

Since 0.10.22.

◆ parse_type()

Gst::StructureChangeType Gst::MessageStructureChange::parse_type ( ) const

Extracts the change type from the Gs::tMessage.

MT safe.

Returns: The change type.

Since 0.10.22.

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ create()

◆ parse()

◆ parse_busy()

◆ parse_owner()

◆ parse_type()