MImageConvScaler Class Reference
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class MImageConvScaler : public MImageConvExtension
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Scaling extension for Image Conversion Library
Member Functions Documentation
GetCapabilities(TScalerCaps &)
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void
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GetCapabilities
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(
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TScalerCaps
&
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aCaps
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)
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const [pure virtual]
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Gets the scaling capabilities.
Parameters
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TScalerCaps
& aCaps
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Returns scaling capabilities of the codec plugin.
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SetScalingL(const TSize &, TImageConvScaler::TScalerQuality, TBool)
Request scaling to the desired size using the quality specified and specifying if the aspect ratio is to be preserved.
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leave
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KErrNotSupported if an invalid size is passed.
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leave
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KErrNotSupported if aLockAspectRatio is EFalse and codec only supports preservation of aspect ratio.
Parameters
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const
TSize
& aDesiredSize
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Proposed size of the scaled image.
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TImageConvScaler::TScalerQuality
aQuality
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Desired quality of the image. Allows codec to lower quality targets to improve performance.
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TBool
aLockAspectRatio
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Set to ETrue if the aspect ratio of the original image is to be preserved.
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SetScalingL(TInt, TImageConvScaler::TScalerQuality)
Define the scaling to be applied to the image according to the given coefficient at the requested quality.
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leave
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KErrNotSupported if codec cannot perform the requested scale.
Parameters
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TInt
aScalingCoeff
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Scale to apply to the source. 2 means twice the original size, -2 half the size. Do not confuse this with ReductionFactor where 2 indicates 1/2 size.
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TImageConvScaler::TScalerQuality
aScalingQuality
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Desired quality of the image. Allows codec to lower quality targets to improve performance.
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Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights
reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License
v1.0.