WICLeadAbcQualityFactorPredefined Enumerated Type

Specifies predefined quality factors that can be used when saving files with the LEAD Abc Bitmap Encoder (CLSID_WICLeadAbcEncoder)

Syntax

            typedef enum WICLeadAbcQualityFactorPredefined{
                    WICLeadAbcLossless            = 0,
                    WICLeadAbcVirtualLossless     = 1,
                    WICLeadAbcRemoveBorder        = 2,
                    WICLeadAbcEnhance             = 3,
                    WICLeadAbcModified1           = 4,
                    WICLeadAbcModified1Fast       = 5,
                    WICLeadAbcModified2           = 6,
                    WICLeadAbcModified2Fast       = 7,
                    WICLeadAbcModified3           = 8,
                    WICLeadAbcModified3Fast       = 9,
                    WICLeadAbcLosslessFast        = 10,
                    WICLeadAbcLossyFast           = 11,
            } WICLeadAbcQualityFactorPredefined;
            

Constants

This enumeration is used with the IWICLeadBitmapEncoder::GetLeadEnumFriendlyName method, and the QualityFactor property bag item.

WICLeadAbcQualityFactorPredefined	Meaning
WICLeadAbcLossless	Lossless compression. This option compresses a 1-bit file and maintains image data unchanged. Highest quality.
WICLeadAbcVirtualLossless	Lossy compression. This option removes the image's noisy pixels and compresses it to a smaller file size than WICLeadAbcLossless.
WICLeadAbcRemoveBorder	Lossy compression. This option removes the image's border, if it exists, and compresses it to a smaller file size than WICLeadAbcVirtualLossless.
WICLeadAbcEnhance	Lossy compression. This option cleans up the image, removes its border if it exists, and compresses it to a smaller file size than WICLeadAbcRemoveBorder does.
WICLeadAbcModified1	Lossy compression. This option cleans up the image, removes its border if it exists, and compresses it to a smaller file size than WICLeadAbcEnhance does. However, it may distort text or straight lines.
WICLeadAbcModified1Fast	Same as WICLeadAbcModified1 except without the border remove or image clean processes.
WICLeadAbcModified2	Lossy compression. This option cleans up the image, removes its border if it exists, and compresses it to a smaller file size than WICLeadAbcModified1 does. However, it may distort text or straight lines. Maximum compression.
WICLeadAbcModified2Fast	Same as WICLeadAbcModified2 except without the border remove or image clean processes.
WICLeadAbcModified3	Lossy compression. Provides faster encoding and decoding speed than WICLeadAbcModified1 or WICLeadAbcModified2. Provides the maximum compression.
WICLeadAbcModified3Fast	Same as WICLeadAbcModified3 except without the border remove or image clean processes.
WICLeadAbcLosslessFast	Faster lossless compression than WICLeadAbcLossless. This option compresses a 1-bit file and maintains image data unchanged. Highest quality. Does not produce compression ratios as high as WICLeadAbcLossless.
WICLeadAbcLossyFast	Lossy compression. This is the fastest Abc lossy compression option. Does not produce compression ratios as high as the other lossy options.

Remarks

References