AllocBufferFromParent Struct Reference

#include "steam/engine/nodeinvocation.hpp"

Description

< using the parent StateAdapter for buffer allocations

Definition at line 179 of file nodeinvocation.hpp.

Public Member Functions
	AllocBufferFromParent (State &sta, WiringDescriptor const &w, const uint outCh)
virtual BuffHandle	allocateBuffer (const lumiera::StreamType *ty)
	allocate a new writable buffer with type and size according to the BufferDescriptor. More...
Public Member Functions inherited from Invocation
bool	buffTab_isConsistent ()
uint	buffTabSize () const
virtual FrameID const &	genFrameID ()
	specialised version filling in the additional information, i.e the concrete node id and the channel number in question
virtual FrameID const &	genFrameID (NodeID const &nID, uint chanNo)
	generate (or calculate) an ID denoting a media data frame appearing at the given position in the render network, for the time point this rendering process is currently calculating data for. More...
uint	nrI () const
uint	nrO () const
void	setBuffTab (BuffTable *b)
	setup the link to an externally allocated buffer table
Public Member Functions inherited from StateAdapter
virtual BuffHandle	fetch (FrameID const &fID)
	try to fetch an existing buffer containing the denoted frame from a cache or similar backing system (e.g. More...
virtual BuffTableStorage &	getBuffTableStorage ()
	necessary for creating a local BuffTableChunk
virtual void	is_calculated (BuffHandle const &bh)
	declare the data contained in the Buffer to be ready. More...
virtual void	releaseBuffer (BuffHandle &bh)
	resign control of the buffer denoted by the handle

Additional Inherited Members
Public Attributes inherited from Invocation
BuffTable *	buffTab
const uint	outNr
WiringDescriptor const &	wiring
Protected Member Functions inherited from Invocation
	Invocation (State &callingProcess, WiringDescriptor const &w, uint o)
	creates a new invocation context state, without BuffTable
Protected Member Functions inherited from StateAdapter
	StateAdapter (State &callingProcess)
virtual State &	getCurrentImplementation ()
	resolves to the State object currently "in charge". More...
Protected Attributes inherited from StateAdapter
State &	current_
State &	parent_

Member Function Documentation

allocateBuffer()

virtual BuffHandle allocateBuffer ( const lumiera::StreamType *  )

inlinevirtual

allocate a new writable buffer with type and size according to the BufferDescriptor.

The actual provider of this buffer depends on the State implementation; it could be a temporary, located in the cache, used for feeding calculated frames over a network, etc.

Returns

a BuffHandle encapsulating the information necessary to get at the actual buffer address and for releasing the buffer.

Implements State.

Definition at line 186 of file nodeinvocation.hpp.

Inheritance diagram for AllocBufferFromParent:

Collaboration diagram for AllocBufferFromParent:

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The documentation for this struct was generated from the following file:

• nodeinvocation.hpp