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CVtImageRotatorImpl Class Reference

class CVtImageRotatorImpl : public CBase

Image scaler implementation.

videosource.lib

Inherits from

Public Member Functions
TBool NeedHeapLock ()
TInt Rotate ( TBool &)
void SetAngle (const CVtImageRotator::TRotationAngle &)
void SetSourceTargetL (const CVtImage &, CVtImage &)
TBool SupportsRotationAngle (const CVtImageRotator::TRotationAngle &)
Protected Member Functions
CVtImageRotatorImpl (const CVtImageRotator::TRotationAngle &)
Private Member Functions
void ValidateSourceTargetL (const CVtImage &, CVtImage &)
Inherited Functions
CBase::CBase()
CBase::Delete(CBase *)
CBase::Extension_(TUint,TAny *&,TAny *)
CBase::operator new(TUint)
CBase::operator new(TUint,TAny *)
CBase::operator new(TUint,TLeave)
CBase::operator new(TUint,TLeave,TUint)
CBase::operator new(TUint,TUint)
CBase::~CBase()
Protected Attributes
CVtImageRotator::TRotationAngle iAngle
const CVtImage * iSource
CVtImage * iTarget

Constructor & Destructor Documentation

CVtImageRotatorImpl(const CVtImageRotator::TRotationAngle &)

CVtImageRotatorImpl ( const CVtImageRotator::TRotationAngle & aAngle ) [protected]

C++ constructor.

Parameters

const CVtImageRotator::TRotationAngle & aAngle Rotation type that will be needed.

Member Functions Documentation

NeedHeapLock()

TBool NeedHeapLock ( ) const
Method to check whether bitmap heap locking is needed or not during scaling process.
Exceptions
In

error situation leaves with one of the system wide error codes.

Rotate(TBool &)

TInt Rotate ( TBool & aContinue ) [pure virtual]

Pure virtual rotation method.

Parameters

TBool & aContinue When method returns, this parameter will contain ETrue if new call is needed (i.e. scaling is not yet finished) or EFalse if scaling is complete.

SetAngle(const CVtImageRotator::TRotationAngle &)

void SetAngle ( const CVtImageRotator::TRotationAngle & aAngle )

Sets rotation angle to be used.

Parameters

const CVtImageRotator::TRotationAngle & aAngle Rotation type that will be needed.

SetSourceTargetL(const CVtImage &, CVtImage &)

void SetSourceTargetL ( const CVtImage & aSource,
CVtImage & aTarget
)
Sets scaler params.
Exceptions
In

error situation leaves with one of the system wide error codes.

Parameters

const CVtImage & aSource
CVtImage & aTarget

SupportsRotationAngle(const CVtImageRotator::TRotationAngle &)

TBool SupportsRotationAngle ( const CVtImageRotator::TRotationAngle & aAngle ) [pure virtual]

Pure virtual method for checking specific rotation angle support.

Parameters

const CVtImageRotator::TRotationAngle & aAngle Rotation type that will be needed.

ValidateSourceTargetL(const CVtImage &, CVtImage &)

void ValidateSourceTargetL ( const CVtImage & aSource,
CVtImage & aTarget
) [private, pure virtual]
Pure virtual source and target image validation method.
Exceptions
If

source or target is not valid, this method leaves with KErrNotSupported.

Parameters

const CVtImage & aSource Constant reference to source image.
CVtImage & aTarget Constant reference to target image.

Member Data Documentation

CVtImageRotator::TRotationAngle iAngle

CVtImageRotator::TRotationAngle iAngle [protected]

const CVtImage * iSource

const CVtImage * iSource [protected]

CVtImage * iTarget

CVtImage * iTarget [protected]

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All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.