tjtransform

Lossless transform

Members

Variables

customFilter
int function(short* coeffs, tjregion arrayRegion, tjregion planeRegion, int componentIndex, int transformIndex, tjtransform* transform) customFilter;

A callback function that can be used to modify the DCT coefficients after they are losslessly transformed but before they are transcoded to a new JPEG file. This allows for custom filters or other transformations to be applied in the frequency domain.

data
void* data;

Arbitrary data that can be accessed within the body of the callback function

op
int op;

One of the @ref TJXOP "transform operations"

options
int options;

The bitwise OR of one of more of the @ref TJXOPT_CROP "transform options"

r
tjregion r;

Cropping region

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