Class TPngEncodeData

class TPngEncodeData : public TFrameDataBlock;

Description

PNG specific frame data variant which holds PNG encoding information.

It can only be used with the PNG encoder.

Derivation

• TFrameDataBlock - The abstract base class for all format-specific frame data variants

• TPngEncodeData - PNG specific frame data variant which holds PNG encoding information

Members

Defined in TPngEncodeData:
DuplicateL(), EBestCompression, EBestSpeed, EDefaultCompression, ENoCompression, TPngCompressLevel, TPngEncodeData(), iBitsPerPixel, iColor, iLevel, iPaletted

Inherited from TFrameDataBlock:
DataType()

IMPORT_C TPngEncodeData();

Description

Default constructor for this class.

private: virtual TFrameDataBlock *DuplicateL(CFrameImageData &aFrameImageData) const;

Description

Provides a copy of an object that manages a list of frame and image block data, but not a bitwise copy. It provides a new reference to the object.

Parameters

CFrameImageData &aFrameImageData An object that manages a list of frame and image block data

Return value

TFrameDataBlock *

TPngCompressLevel

Description

A flag reflecting the level of compression used.

EDefaultCompression Default level of compression used. ENoCompression No compression used. EBestSpeed Optimise compression for speed. EBestCompression Optimise compression for size.

TInt iBitsPerPixel;

Description

The number of bits per pixel.

TBool iColor;

Description

A flag indicating if the image is color or grayscale.

TBool iPaletted;

Description

A flag indicating use of a palette or RGB.

TPngCompressLevel iLevel;

Description

The level of compression to apply.