A step start message. More...

#include <gstreamermm/message.h>

Inheritance diagram for Gst::MessageStepStart:

Public Member Functions
void	parse (bool& active, Gst::Format& format, guint64& amount, double& rate, bool&flush, bool& intermediate) const
	Extract the values of the step start message. More...

guint64	parse_amount () const
	Extracts the amount of the step start message. More...

bool	parse_active () const
	Extracts the active flag of the step start message. More...

Gst::Format	parse_format () const
	Extracts the format of the step start message. More...

double	parse_rate () const
	Extracts the rate of the step start message. More...

bool	parse_flush () const
	Extracts the flush flag of the step start message. More...

bool	parse_intermediate () const
	Extracts the intermediate flag of the step start 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::MessageStepStart >	create (const Glib::RefPtr< Gst::Object >& src, bool active, Gst::Format format, guint64 amount, double rate, bool flush, bool intermediate)
	This message is posted by elements when they accept or activate a new step event for amount in format. 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 step start message.

See create() for more details.

Member Function Documentation

◆ create()

static Glib::RefPtr<Gst::MessageStepStart> Gst::MessageStepStart::create	(	const Glib::RefPtr< Gst::Object >&	src,
		bool	active,
		Gst::Format	format,
		guint64	amount,
		double	rate,
		bool	flush,
		bool	intermediate
	)

static

This message is posted by elements when they accept or activate a new step event for amount in format.

active is set to false when the element accepted the new step event and has queued it for execution in the streaming threads.

active is set to true when the element has activated the step operation and is now ready to start executing the step in the streaming thread. After this message is emitted, the application can queue a new step operation in the element.

Parameters

src	The object originating the message.
active	If the step is active or queued.
format	The format of amount.
amount	The amount of stepped data.
rate	The rate of the stepped amount.
flush	Is this an flushing step.
intermediate	Is this an intermediate step.

Returns: The new step_start message.

MT safe.

◆ parse()

void Gst::MessageStepStart::parse	(	bool &	active,
		Gst::Format&	format,
		guint64 &	amount,
		double &	rate,
		bool &	flush,
		bool &	intermediate
	)		const

Extract the values of the step start message.

MT safe.

Parameters

active	Result location for the active flag.
format	Result location for the format.
amount	Result location for the amount.
rate	Result location for the rate.
flush	Result location for the flush flag.
intermediate	Result location for the intermediate flag.

Since 0.10.24.

◆ parse_active()

bool Gst::MessageStepStart::parse_active ( ) const

Extracts the active flag of the step start message.

Returns: The active flag.

◆ parse_amount()

guint64 Gst::MessageStepStart::parse_amount ( ) const

Extracts the amount of the step start message.

Returns: The amount.

◆ parse_flush()

bool Gst::MessageStepStart::parse_flush ( ) const

Extracts the flush flag of the step start message.

Returns: The flush flag.

◆ parse_format()

Gst::Format Gst::MessageStepStart::parse_format ( ) const

Extracts the format of the step start message.

Returns: The format.

◆ parse_intermediate()

bool Gst::MessageStepStart::parse_intermediate ( ) const

Extracts the intermediate flag of the step start message.

Returns: The intermediate flag.

◆ parse_rate()

double Gst::MessageStepStart::parse_rate ( ) const

Extracts the rate of the step start message.

Returns: The rate.

Public Member Functions

Static Public Member Functions

Additional Inherited Members