OutputSlot Class Reference

#include "steam/play/output-slot.hpp"

Description

Interface: Generic output sink.

An OutputSlot represents the possibility to send data through multiple channels to some kind of external sink (video in GUI window, video full screen, sound, Jack, rendering to file). Clients are expected to retrieve a suitably preconfigured implementation from some OutputManager instance. An OutputSlot needs to be claimed for output by invoking allocate, which returns a representation of the connection state. This operation is exclusive. The actual output sinks can be retrieved through the Allocation object returned from there.

Definition at line 110 of file output-slot.hpp.

Public Types
typedef lib::IterSource< DataSink >::iterator	OpenedSinks

Public Member Functions
Allocation &	allocate ()
	claim this slot for exclusive use More...
void	disconnect ()
	disconnect from this OutputSlot More...
bool	isFree () const
	can this OutputSlot be allocated? More...

Classes
class	Allocation
class	Connection
class	ConnectionState
	Extension point for Implementation. More...

Protected Member Functions
virtual ConnectionState *	buildState ()=0
	build the connected state, based on the existing configuration within this concrete OutputSlot

Protected Attributes
unique_ptr< ConnectionState >	state_

Additional Inherited Members
Private Member Functions inherited from NonCopyable
	NonCopyable (NonCopyable const &)=delete
NonCopyable &	operator= (NonCopyable const &)=delete

Member Function Documentation

isFree()

bool isFree

(

)

const

can this OutputSlot be allocated?

whether this output slot is occupied

Returns

true if currently unconnected and able to connect and handle output data

Definition at line 61 of file output-slot.cpp.

Referenced by OutputSlot::allocate(), OutputSlot::disconnect(), and LumieraRenderProcessBuilder::getOutputFor().

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allocate()

OutputSlot::Allocation & allocate

(

)

claim this slot for exclusive use

claim this OutputSlot for active use as output sink(s).

At any point, a given slot can only be used for a single ongoing output process (which may serve several channels though). The assumption is for the OutputSlot to be picked through a query to some OutputManater, so the parameters (resolution, sample rate...) should be suited for the intended use. Thus no additional configuration is necessary.

Returns

Allocation representing the "connected state" from the client's POV. The client may retrieve the effectively required Timings from there, as well as the actual output sinks, ready for use.

Remarks

calls back into buildState, where the concrete OutputSlot is expected to provide a private Connection implementation, subclassing OutputSlot::Allocation

Definition at line 82 of file output-slot.cpp.

References OutputSlot::isFree().

Referenced by LumieraRenderProcessBuilder::buildCalculationStreams().

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disconnect()

void disconnect

(

)

disconnect from this OutputSlot

Warning

may block until DataSinks are gone

Definition at line 93 of file output-slot.cpp.

References OutputSlot::isFree().

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Inheritance diagram for OutputSlot:

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The documentation for this class was generated from the following files:

• output-slot.hpp
• output-slot.cpp