A state change message. More...

#include <gstreamermm/message.h>

Inheritance diagram for Gst::MessageStateChanged:

Public Member Functions
void	parse (State& oldstate, State& newstate, State& pending) const
	Extracts the old, new and pending states from the Gst::MessageStateChanged. More...

State	parse_new_state () const
	Extracts and returns the new state from the Gst::MessageStateChanged. More...

State	parse_old_state () const
	Extracts and returns the old state from the Gst::MessageStateChanged. More...

State	parse_pending_state () const
	Extracts and returns the pending state from the Gst::MessageStateChanged. 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::MessageStateChanged >	create (const Glib::RefPtr< Gst::Object >& src, State oldstate, State newstate, State pending)
	Create a state 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 state change message.

See create() for more details.

Member Function Documentation

◆ create()

static Glib::RefPtr<Gst::MessageStateChanged> Gst::MessageStateChanged::create	(	const Glib::RefPtr< Gst::Object >&	src,
		State	oldstate,
		State	newstate,
		State	pending
	)

static

Create a state change message.

This message is posted whenever an element changed its state.

Parameters

src	The object originating the message.
oldstate	The previous state.
newstate	The new (current) state.
pending	The pending (target) state.

Returns: The new state change message.

MT safe.

◆ parse()

void Gst::MessageStateChanged::parse	(	State&	oldstate,
		State&	newstate,
		State&	pending
	)		const

Extracts the old, new and pending states from the Gst::MessageStateChanged.

MT safe.

Parameters

oldstate	The previous state.
newstate	The new (current) state.
pending	The pending (target) state.

◆ parse_new_state()

State Gst::MessageStateChanged::parse_new_state ( ) const

Extracts and returns the new state from the Gst::MessageStateChanged.

MT safe.

Returns: The new (current) state.

◆ parse_old_state()

State Gst::MessageStateChanged::parse_old_state ( ) const

Extracts and returns the old state from the Gst::MessageStateChanged.

MT safe.

Returns: The old state.

◆ parse_pending_state()

State Gst::MessageStateChanged::parse_pending_state ( ) const

Extracts and returns the pending state from the Gst::MessageStateChanged.

MT safe.

Returns: The pending state.

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ create()

◆ parse()

◆ parse_new_state()

◆ parse_old_state()

◆ parse_pending_state()