Class TJpegImageData

class TJpegImageData : public TImageDataBlock;

Description

JPEG specific image data variant which holds color sampling and quality factor information.

It can be used with both the JPEG decoder and encoder.

Derivation

• TImageDataBlock - The abstract base class for all format-specific image data variants

• TJpegImageData - JPEG specific image data variant which holds color sampling and quality factor information

Members

Defined in TJpegImageData:
DuplicateL(), EColor420, EColor422, EColor444, EMonochrome, TColorSampling, TJpegImageData(), iQualityFactor, iSampleScheme

Inherited from TImageDataBlock:
DataType()

IMPORT_C TJpegImageData();

Description

Default constructor for this class.

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

Description

Parameters

CFrameImageData &aFrameImageData

Return value

TImageDataBlock *

TColorSampling

Description

Flag reflecting the color sampling type.

EMonochrome Monochrome. EColor420 Horizontal and vertical chrominance decimation. EColor422 Horizontal chrominance decimation. EColor444 No chrominance decimation.

TColorSampling iSampleScheme;

Description

The color sampling scheme to use.

See also:

• TColorSampling

TInt iQualityFactor;

Description

The quality factor.

This represents the current allowable percentage level of degradation when compressing the image data.

The range is 0 to 100 inclusive.