public interface TJCustomFilter
| Modifier and Type | Method and Description | 
|---|---|
| void | customFilter(java.nio.ShortBuffer coeffBuffer,
            java.awt.Rectangle bufferRegion,
            java.awt.Rectangle planeRegion,
            int componentID,
            int transformID,
            TJTransform transform)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 image. | 
void customFilter(java.nio.ShortBuffer coeffBuffer,
                java.awt.Rectangle bufferRegion,
                java.awt.Rectangle planeRegion,
                int componentID,
                int transformID,
                TJTransform transform)
                  throws java.lang.Exception
coeffBuffer - a buffer containing transformed DCT coefficients.
 (NOTE: this buffer is not guaranteed to be valid once the callback
 returns, so applications wishing to hand off the DCT coefficients to
 another function or library should make a copy of them within the body of
 the callback.)bufferRegion - rectangle containing the width and height of
 coeffBuffer as well as its offset relative to the component
 plane.  TurboJPEG implementations may choose to split each component plane
 into multiple DCT coefficient buffers and call the callback function once
 for each buffer.planeRegion - rectangle containing the width and height of the
 component plane to which coeffBuffer belongscomponentID - ID number of the component plane to which
 coeffBuffer belongs (Y, Cb, and Cr have, respectively, ID's
 of 0, 1, and 2 in typical JPEG images.)transformID - ID number of the transformed image to which
 coeffBuffer belongs.  This is the same as the index of the
 transform in the transforms array that was passed to TJTransformer.transform().transform - a TJTransform instance that specifies the
 parameters and/or cropping region for this transformjava.lang.Exception