Murl::Graph::IVideoSource Interface Reference

The IVideoSource graph node interface. More...

#include "murl_graph_i_video_source.h"

Inheritance diagram for Murl::Graph::IVideoSource:

Public Member Functions
virtual INode *	GetNodeInterface ()=0
	Get the mutable Graph::INode interface. More...
virtual const INode *	GetNodeInterface () const =0
	Get the constant Graph::INode interface. More...
virtual IVideoResourceTarget *	GetVideoResourceTarget ()=0
	Get a mutable Graph::IVideoResourceTarget container. More...
virtual const IVideoResourceTarget *	GetVideoResourceTarget () const =0
	Get a constant Graph::IVideoResourceTarget container. More...
virtual Bool	SetBufferType (IEnums::BufferType type)=0
	Set the video node's buffer type. More...
virtual IEnums::BufferType	GetBufferType () const =0
	Get the video node's buffer type. More...
virtual Double	GetDuration () const =0
	Get the duration of the video. More...
virtual IVideoStream *	AcquireVideoStream ()=0
	Get a video stream. More...
virtual Bool	ReleaseVideoStream (IVideoStream *stream)=0
	Release a previously acquired video stream. More...
virtual Video::ITexture *	CreateVideoTexture (Video::IRenderer *renderer) const =0
	Create a suitable video texture for optimal decoding. More...

Detailed Description

The IVideoSource graph node interface.

This interface represents a node referencing a read-only Resource::IVideo object, which can be played back by assigning it to one or more individual Graph::IVideoSequence nodes.

Member Function Documentation

GetNodeInterface() [1/2]

virtual INode* Murl::Graph::IVideoSource::GetNodeInterface ( )

pure virtual

Get the mutable Graph::INode interface.

This method returns a mutable pointer to the node's Graph::INode interface, to be able to query or modify common node properties such as active state, visibility or ID.

Returns

The mutable Graph::INode interface, or null if not available

GetNodeInterface() [2/2]

virtual const INode* Murl::Graph::IVideoSource::GetNodeInterface ( ) const

pure virtual

Get the constant Graph::INode interface.

This method returns a constant pointer to the node's Graph::INode interface, to be able to query common node properties such as active state, visibility or ID.

Returns

The constant Graph::INode interface, or null if not available

GetVideoResourceTarget() [1/2]

virtual IVideoResourceTarget* Murl::Graph::IVideoSource::GetVideoResourceTarget ( )

pure virtual

Get a mutable Graph::IVideoResourceTarget container.

This method returns a mutable pointer to a Graph::IVideoResourceTarget container, which allows to add, remove or query the video resources referenced by a node implementing this interface.

Returns

The mutable Graph::IVideoResourceTarget container, or null if not available

GetVideoResourceTarget() [2/2]

virtual const IVideoResourceTarget* Murl::Graph::IVideoSource::GetVideoResourceTarget ( ) const

pure virtual

Get a constant Graph::IVideoResourceTarget container.

This method returns a constant pointer to a Graph::IVideoResourceTarget container, which allows to query the video resources referenced by a node implementing this interface.

Returns

The constant Graph::IVideoResourceTarget container, or null if not available

SetBufferType()

virtual Bool Murl::Graph::IVideoSource::SetBufferType ( IEnums::BufferType  type )

pure virtual

Set the video node's buffer type.

Parameters

type	The buffer type.

Returns

true if successful.

GetBufferType()

virtual IEnums::BufferType Murl::Graph::IVideoSource::GetBufferType ( ) const

pure virtual

Get the video node's buffer type.

Returns

The buffer type.

GetDuration()

virtual Double Murl::Graph::IVideoSource::GetDuration ( ) const

pure virtual

Get the duration of the video.

Returns

The video duration in seconds.

AcquireVideoStream()

virtual IVideoStream* Murl::Graph::IVideoSource::AcquireVideoStream ( )

pure virtual

Get a video stream.

Returns

The video stream, or null if not available.

ReleaseVideoStream()

virtual Bool Murl::Graph::IVideoSource::ReleaseVideoStream ( IVideoStream *  stream )

pure virtual

Release a previously acquired video stream.

Parameters

stream

The video stream to release

Returns

true if successful.

CreateVideoTexture()

virtual Video::ITexture* Murl::Graph::IVideoSource::CreateVideoTexture ( Video::IRenderer *  renderer ) const

pure virtual

Create a suitable video texture for optimal decoding.

A video source may provide special texture objects that are better suited for optimal decoding than the standard textures created via a video renderer. If no special texture is needed, this method returns a null pointer, and a standard texture should be created in the usual way. If this method returns a valid pointer, the returned texture can be used just like a standard one, including destruction via the renderer.

Parameters

renderer

The video renderer used for creation.

Returns

A pointer to a special texture, or null if not needed.

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

• murl_graph_i_video_source.h