[RFC] Add API for setting adaptive quantization parameters #107
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This allows for setting the adaptive quantization bias multiplier and offset parameters . Together with using custom base quantization tables, this allows you to tune jpegli to deliver better compression rates for specific datasets or metrics.
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This allows for setting the adaptive quantization bias multiplier and offset parameters . Together with using custom base quantization tables, this allows you to tune jpegli to deliver better compression rates for specific datasets or metrics.
Description
I added "RFC" to the title since I'm not sure what's the best approach for adding test coverage.
I could add support to cjpegli but it's quite a niche use case so I'm not sure this is the best place for it, otherwise a unit test may be more suitable.
The change has been tested using a separate command line tool that includes jpegli, however all that testing was done on grayscale images.