EWWW IO adjust Sharpening functions/params.

ewwwio-adjust-sharpening.php

<?php
/*
Plugin Name: EWWW IO Adjust Sharpening
Version: 1.0.0
*/

/*
 * Valid options:
 * 'FILTER_POINT',
 * 'FILTER_BOX',
 * 'FILTER_TRIANGLE',
 * 'FILTER_HERMITE',
 * 'FILTER_HANNING',
 * 'FILTER_HAMMING',
 * 'FILTER_BLACKMAN',
 * 'FILTER_GAUSSIAN',
 * 'FILTER_QUADRATIC',
 * 'FILTER_CUBIC',
 * 'FILTER_CATROM',
 * 'FILTER_MITCHELL',
 * 'FILTER_LANCZOS',
 * 'FILTER_BESSEL',
 * 'FILTER_SINC'
 */
add_filter( 'eio_image_resize_filter', 'eio_change_image_resize_filter', 10, 3 );
function eio_change_image_resize_filter( $filter_name, $dst_w, $dst_h ) {
	return 'FILTER_TRIANGLE';
}

// Change false to true to enable the use of the adaptiveSharpenImage() function.
add_filter( 'eio_use_adaptive_sharpen', 'eio_enable_adaptive_sharpen', 10, 3 );
function eio_enable_adaptive_sharpen( $use_adaptive, $dst_w, $dst_h ) {
	return false;
}

// Here's an example of using the extra width and height params.
add_filter( 'eio_adaptive_sharpen_radius', 'eio_adjust_adaptive_sharpen_radius', 10, 3 );
function eio_adjust_adaptive_sharpen_radius( $param, $dst_w, $dst_h ) {
	if ( $dst_w > 2000 || $dst_h > 2000 ) {
		return 0;
	}
    return 0;
}

add_filter( 'eio_adaptive_sharpen_sigma', 'eio_adjust_adaptive_sharpen_sigma', 10, 3 );
function eio_adjust_adaptive_sharpen_sigma( $param, $dst_w, $dst_h ) {
    return 1;
}

add_filter( 'eio_sharpen_radius', 'eio_adjust_sharpen_radius', 10, 3 );
function eio_adjust_sharpen_radius( $param, $dst_w, $dst_h ) {
    return 0.25;
}

add_filter( 'eio_sharpen_sigma', 'eio_adjust_sharpen_sigma', 10, 3 );
function eio_adjust_sharpen_sigma( $param, $dst_w, $dst_h ) {
    return 0.25;
}

add_filter( 'eio_sharpen_amount', 'eio_adjust_sharpen_amount', 10, 3 );
function eio_adjust_sharpen_amount( $param, $dst_w, $dst_h ) {
    return 8;
}

add_filter( 'eio_sharpen_threshold', 'eio_adjust_sharpen_threshold', 10, 3 );
function eio_adjust_sharpen_threshold( $param, $dst_w, $dst_h ) {
    return 0.065;
}