memories/lib/Service/FileRobotMagick.php

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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022, Varun Patil <radialapps@gmail.com>
* @author Varun Patil <radialapps@gmail.com>
* @license AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OCA\Memories\Service;
/**
* Constructs a FileRobotImageState object from a JSON array state.
*/
class FileRobotImageState
{
/** -1 to 1 */
public ?float $brightness = null;
/** -100 to 100 */
public ?float $contrast = null;
/** 0 to 259 */
public ?float $hue = null;
/** -2 to 10 */
public ?float $saturation = null;
/** -2 to 2 */
public ?float $value = null;
/** 0 to 100 */
public ?float $blurRadius = null;
/** 0 to 200 */
public ?float $warmth = null;
/** Order of filters */
public array $finetuneOrder = [];
/** Crop X coordinate */
public ?float $cropX = null;
/** Crop Y coordinate */
public ?float $cropY = null;
/** Crop width */
public ?float $cropWidth = null;
/** Crop height */
public ?float $cropHeight = null;
/** Rotation */
public ?int $rotation = null;
/** Flipped X */
public bool $isFlippedX = false;
/** Flipped Y */
public bool $isFlippedY = false;
/** Resize width */
public ?int $resizeWidth = null;
/** Resize height */
public ?int $resizeHeight = null;
/** Filter */
public ?string $filter = null;
public function __construct(array $json)
{
if ($order = $json['finetunes']) {
foreach ($order as $key) {
$this->finetuneOrder[] = $key;
}
}
if ($props = $json['finetunesProps']) {
$this->_set($props, 'brightness');
$this->_set($props, 'contrast');
$this->_set($props, 'hue');
$this->_set($props, 'saturation');
$this->_set($props, 'value');
$this->_set($props, 'blurRadius');
$this->_set($props, 'warmth');
}
if ($props = $json['adjustments']) {
if ($crop = $props['crop']) {
$this->_set($crop, 'x', 'cropX');
$this->_set($crop, 'y', 'cropY');
$this->_set($crop, 'width', 'cropWidth');
$this->_set($crop, 'height', 'cropHeight');
}
$this->_set($props, 'rotation');
$this->_set($props, 'isFlippedX');
$this->_set($props, 'isFlippedY');
}
if ($filter = $json['filter']) {
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/components/tools/Filters/Filters.constants.js#L8
$this->filter = $filter;
}
if ($resize = $json['resize']) {
$this->_set($resize, 'width', 'resizeWidth');
$this->_set($resize, 'height', 'resizeHeight');
}
}
private function _set(array $parent, string $key, string $ckey = null)
{
$ckey ??= $key;
if (\array_key_exists($key, $parent)) {
$this->{$ckey} = $parent[$key];
}
}
}
/**
* Applies a FileRobotImageState to an Imagick object.
*/
class FileRobotMagick
{
private \Imagick $image;
private FileRobotImageState $state;
public function __construct(\Imagick $image, array $state)
{
$this->image = $image;
$this->state = new FileRobotImageState($state);
}
public function apply()
{
// Ensure the image is in the correct colorspace
if (\Imagick::COLORSPACE_SRGB !== $this->image->getColorspace()) {
$this->image->transformImageColorspace(\Imagick::COLORSPACE_SRGB);
}
// Orient the image
$this->image->autoOrient();
$this->applyCrop();
$this->applyFlipRotation();
$this->applyResize();
foreach ($this->state->finetuneOrder as $key) {
$method = 'apply'.$key;
if (!method_exists($this, $method)) {
throw new \Exception('Unknown finetune: '.$key);
}
$this->{$method}();
}
if ($this->state->filter) {
$method = 'applyFilter'.$this->state->filter;
if (!method_exists($this, $method)) {
throw new \Exception('Unknown filter: '.$this->state->filter);
}
$this->{$method}();
}
return $this->image;
}
protected function applyCrop()
{
if ($this->state->cropX || $this->state->cropY || $this->state->cropWidth || $this->state->cropHeight) {
$iw = $this->image->getImageWidth();
$ih = $this->image->getImageHeight();
$this->image->cropImage(
(int) (($this->state->cropWidth ?? 1) * $iw),
(int) (($this->state->cropHeight ?? 1) * $ih),
(int) (($this->state->cropX ?? 0) * $iw),
(int) (($this->state->cropY ?? 0) * $ih)
);
}
}
protected function applyFlipRotation()
{
if ($this->state->isFlippedX) {
$this->image->flopImage();
}
if ($this->state->isFlippedY) {
$this->image->flipImage();
}
if ($this->state->rotation) {
$this->image->rotateImage(new \ImagickPixel(), $this->state->rotation);
}
}
protected function applyResize()
{
if ($this->state->resizeWidth || $this->state->resizeHeight) {
$this->image->resizeImage(
$this->state->resizeWidth ?? 0,
$this->state->resizeHeight ?? 0,
\Imagick::FILTER_LANCZOS,
1
);
}
}
protected function applyBrighten(?float $value = null)
{
$brightness = $value ?? $this->state->brightness ?? 0;
if (0 === $brightness) {
return;
}
// https://github.com/konvajs/konva/blob/f0e18b09079175404a1026363689f8f89eae0749/src/filters/Brighten.ts#L15-L29
$this->image->evaluateImage(\Imagick::EVALUATE_ADD, $brightness * 255 * 255, \Imagick::CHANNEL_ALL);
}
protected function applyContrast(?float $value = null)
{
$contrast = $value ?? $this->state->contrast ?? 0;
if (0 === $contrast) {
return;
}
// https://github.com/konvajs/konva/blob/f0e18b09079175404a1026363689f8f89eae0749/src/filters/Contrast.ts#L15-L59
// m = ((a + 100) / 100) ** 2 // slope
// y = (x - 0.5) * m + 0.5
// y = mx + (0.5 * (1 - m)) // simplify
$m = (($contrast + 100) / 100) ** 2;
$c = 0.5 * (1 - $m);
$this->image->functionImage(\Imagick::FUNCTION_POLYNOMIAL, [$m, $c], \Imagick::CHANNEL_ALL);
}
protected function applyHSV(?float $hue = null, ?float $saturation = null, ?float $value = null)
{
$hue ??= $this->state->hue ?? 0;
$saturation ??= $this->state->saturation ?? 0;
$value ??= $this->state->value ?? 0;
if (0 === $hue && 0 === $saturation && 0 === $value) {
return;
}
$h = abs(($hue ?? 0) + 360) % 360;
$s = 2 ** ($saturation ?? 0);
$v = 2 ** ($value ?? 0);
// https://github.com/konvajs/konva/blob/f0e18b09079175404a1026363689f8f89eae0749/src/filters/HSV.ts#L17-L63
$vsu = $v * $s * cos(($h * M_PI) / 180);
$vsw = $v * $s * sin(($h * M_PI) / 180);
$rr = 0.299 * $v + 0.701 * $vsu + 0.167 * $vsw;
$rg = 0.587 * $v - 0.587 * $vsu + 0.33 * $vsw;
$rb = 0.114 * $v - 0.114 * $vsu - 0.497 * $vsw;
$gr = 0.299 * $v - 0.299 * $vsu - 0.328 * $vsw;
$gg = 0.587 * $v + 0.413 * $vsu + 0.035 * $vsw;
$gb = 0.114 * $v - 0.114 * $vsu + 0.293 * $vsw;
$br = 0.299 * $v - 0.3 * $vsu + 1.25 * $vsw;
$bg = 0.587 * $v - 0.586 * $vsu - 1.05 * $vsw;
$bb = 0.114 * $v + 0.886 * $vsu - 0.2 * $vsw;
$colorMatrix = [
$rr, $rg, $rb, 0, 0,
$gr, $gg, $gb, 0, 0,
$br, $bg, $bb, 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1,
];
$this->image->colorMatrixImage($colorMatrix);
}
protected function applyBlur()
{
if ($this->state->blurRadius <= 0) {
return;
}
// https://github.com/konvajs/konva/blob/f0e18b09079175404a1026363689f8f89eae0749/src/filters/Blur.ts#L834
$sigma = min(round($this->state->blurRadius * 1.5), 100);
$this->image->blurImage(0, $sigma);
}
protected function applyWarmth()
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/finetunes/Warmth.js#L17-L28
$warmth = ($this->state->warmth ?? 0);
if ($warmth <= 0) {
return;
}
// Add to red channel, subtract from blue channel
$this->image->evaluateImage(\Imagick::EVALUATE_ADD, $warmth * 255, \Imagick::CHANNEL_RED);
$this->image->evaluateImage(\Imagick::EVALUATE_SUBTRACT, $warmth * 255, \Imagick::CHANNEL_BLUE);
}
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/components/tools/Filters/Filters.constants.js#L8
protected function applyFilterInvert()
{
$this->image->negateImage(false);
}
protected function applyFilterBlackAndWhite()
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BlackAndWhite.js
$this->image->thresholdImage(100 * 255);
}
protected function applyFilterSepia()
{
// https://github.com/konvajs/konva/blob/master/src/filters/Sepia.ts
$this->image->colorMatrixImage([
0.393, 0.769, 0.189, 0, 0,
0.349, 0.686, 0.168, 0, 0,
0.272, 0.534, 0.131, 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1,
]);
}
protected function applyFilterSolarize()
{
// https://github.com/konvajs/konva/blob/master/src/filters/Solarize.ts
$this->image->solarizeImage(128 * 255);
}
protected function applyFilterClarendon()
{
$this->applyBaseFilterBrightness(0.1);
$this->applyBaseFilterContrast(0.1);
$this->applyBaseFilterSaturation(0.15);
}
protected function applyFilterGingham()
{
$this->applyBaseFilterSepia(0.04);
$this->applyBaseFilterContrast(-0.15);
}
protected function applyFilterMoon()
{
$this->applyBaseFilterGrayscale();
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterLark()
{
$this->applyBaseFilterBrightness(0.08);
$this->applyBaseFilterAdjustRGB(1, 1.03, 1.05);
$this->applyBaseFilterSaturation(0.12);
}
protected function applyFilterReyes()
{
$this->applyBaseFilterSepia(0.4);
$this->applyBaseFilterBrightness(0.13);
$this->applyBaseFilterContrast(-0.05);
}
protected function applyFilterJuno()
{
$this->applyBaseFilterAdjustRGB(1.01, 1.04, 1);
$this->applyBaseFilterSaturation(0.3);
}
protected function applyFilterSlumber()
{
$this->applyBaseFilterBrightness(0.1);
$this->applyBaseFilterSaturation(-0.5);
}
protected function applyFilterCrema()
{
$this->applyBaseFilterAdjustRGB(1.04, 1, 1.02);
$this->applyBaseFilterSaturation(-0.05);
}
protected function applyFilterLudwig()
{
$this->applyBaseFilterBrightness(0.05);
$this->applyBaseFilterSaturation(-0.03);
}
protected function applyFilterAden()
{
$this->applyBaseFilterColorFilter(228, 130, 225, 0.13);
$this->applyBaseFilterSaturation(-0.2);
}
protected function applyFilterPerpetua()
{
$this->applyBaseFilterAdjustRGB(1.05, 1.1, 1);
}
protected function applyFilterAmaro()
{
$this->applyBaseFilterSaturation(0.3);
$this->applyBaseFilterBrightness(0.15);
}
protected function applyFilterMayfair()
{
$this->applyBaseFilterColorFilter(230, 115, 108, 0.05);
$this->applyBaseFilterSaturation(0.15);
}
protected function applyFilterRise()
{
$this->applyBaseFilterColorFilter(255, 170, 0, 0.1);
$this->applyBaseFilterBrightness(0.09);
$this->applyBaseFilterSaturation(0.1);
}
protected function applyFilterHudson()
{
$this->applyBaseFilterAdjustRGB(1, 1, 1.25);
$this->applyBaseFilterContrast(0.1);
$this->applyBaseFilterBrightness(0.15);
}
protected function applyFilterValencia()
{
$this->applyBaseFilterColorFilter(255, 225, 80, 0.08);
$this->applyBaseFilterSaturation(0.1);
$this->applyBaseFilterContrast(0.05);
}
protected function applyFilterXpro2()
{
$this->applyBaseFilterColorFilter(255, 255, 0, 0.07);
$this->applyBaseFilterSaturation(0.2);
$this->applyBaseFilterContrast(0.15);
}
protected function applyFilterSierra()
{
$this->applyBaseFilterContrast(-0.15);
$this->applyBaseFilterSaturation(0.1);
}
protected function applyFilterWillow()
{
$this->applyBaseFilterGrayscale();
$this->applyBaseFilterColorFilter(100, 28, 210, 0.03);
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterLoFi()
{
$this->applyBaseFilterContrast(0.15);
$this->applyBaseFilterSaturation(0.2);
}
protected function applyFilterInkwell()
{
$this->applyBaseFilterGrayscale();
}
protected function applyFilterHefe()
{
$this->applyBaseFilterContrast(0.1);
$this->applyBaseFilterSaturation(0.15);
}
protected function applyFilterNashville()
{
$this->applyBaseFilterColorFilter(220, 115, 188, 0.12);
$this->applyBaseFilterContrast(-0.05);
}
protected function applyFilterStinson()
{
$this->applyBaseFilterBrightness(0.1);
$this->applyBaseFilterSepia(0.3);
}
protected function applyFilterVesper()
{
$this->applyBaseFilterColorFilter(255, 225, 0, 0.05);
$this->applyBaseFilterBrightness(0.06);
$this->applyBaseFilterContrast(0.06);
}
protected function applyFilterEarlybird()
{
$this->applyBaseFilterColorFilter(255, 165, 40, 0.2);
}
protected function applyFilterBrannan()
{
$this->applyBaseFilterContrast(0.2);
$this->applyBaseFilterColorFilter(140, 10, 185, 0.1);
}
protected function applyFilterSutro()
{
$this->applyBaseFilterBrightness(-0.1);
$this->applyBaseFilterContrast(-0.1);
}
protected function applyFilterToaster()
{
$this->applyBaseFilterSepia(0.1);
$this->applyBaseFilterColorFilter(255, 145, 0, 0.2);
}
protected function applyFilterWalden()
{
$this->applyBaseFilterBrightness(0.1);
$this->applyBaseFilterColorFilter(255, 255, 0, 0.2);
}
protected function applyFilterNinteenSeventySeven()
{
$this->applyBaseFilterColorFilter(255, 25, 0, 0.15);
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterKelvin()
{
$this->applyBaseFilterColorFilter(255, 140, 0, 0.1);
$this->applyBaseFilterAdjustRGB(1.15, 1.05, 1);
$this->applyBaseFilterSaturation(0.35);
}
protected function applyFilterMaven()
{
$this->applyBaseFilterColorFilter(225, 240, 0, 0.1);
$this->applyBaseFilterSaturation(0.25);
$this->applyBaseFilterContrast(0.05);
}
protected function applyFilterGinza()
{
$this->applyBaseFilterSepia(0.06);
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterSkyline()
{
$this->applyBaseFilterSaturation(0.35);
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterDogpatch()
{
$this->applyBaseFilterContrast(0.15);
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterBrooklyn()
{
$this->applyBaseFilterColorFilter(25, 240, 252, 0.05);
$this->applyBaseFilterSepia(0.3);
}
protected function applyFilterHelena()
{
$this->applyBaseFilterColorFilter(208, 208, 86, 0.2);
$this->applyBaseFilterContrast(0.15);
}
protected function applyFilterAshby()
{
$this->applyBaseFilterColorFilter(255, 160, 25, 0.1);
$this->applyBaseFilterBrightness(0.1);
}
protected function applyFilterCharmes()
{
$this->applyBaseFilterColorFilter(255, 50, 80, 0.12);
$this->applyBaseFilterContrast(0.05);
}
protected function applyBaseFilterBrightness(float $value)
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L2
$this->applyBrighten($value);
}
protected function applyBaseFilterContrast(float $value)
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L14
$value *= 255;
// y = m * (x - 128) + 128
// y = m * x + (128 * (1 - m))
$m = (259 * ($value + 255)) / (255 * (259 - $value));
$c = 0.5 * (1 - $m);
$this->image->functionImage(\Imagick::FUNCTION_POLYNOMIAL, [$m, $c], \Imagick::CHANNEL_ALL);
}
protected function applyBaseFilterSaturation(float $value)
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L24
$this->applyHSV(0, $value, 0); // lazy
}
protected function applyBaseFilterGrayscale()
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L38
// y = 0.2126 * r + 0.7152 * g + 0.0722 * b;
$this->image->colorMatrixImage([
0.2126, 0.7152, 0.0722, 0, 0,
0.2126, 0.7152, 0.0722, 0, 0,
0.2126, 0.7152, 0.0722, 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1,
]);
}
protected function applyBaseFilterSepia(float $value)
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L46
$this->image->colorMatrixImage([
1 - 0.607 * $value, 0.769 * $value, 0.189 * $value, 0, 0,
0.349 * $value, 1 - 0.314 * $value, 0.168 * $value, 0, 0,
0.272 * $value, 0.534 * $value, 1 - 0.869 * $value, 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1,
]);
}
protected function applyBaseFilterAdjustRGB(float $r, float $g, float $b)
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L57
$this->image->colorMatrixImage([
$r, 0, 0, 0, 0,
0, $g, 0, 0, 0,
0, 0, $b, 0, 0,
0, 0, 0, 1, 0,
0, 0, 0, 0, 1,
]);
}
protected function applyBaseFilterColorFilter(float $r, float $g, float $b, float $v)
{
// https://github.com/scaleflex/filerobot-image-editor/blob/7113bf4968d97f41381f4a2965a59defd44562c8/packages/react-filerobot-image-editor/src/custom/filters/BaseFilters.js#L63
// y = x - (x - k) * v = (1 - v) * x + k * v
$this->image->evaluateImage(\Imagick::EVALUATE_MULTIPLY, 1 - $v, \Imagick::CHANNEL_ALL);
$this->image->evaluateImage(\Imagick::EVALUATE_ADD, $v * $r * 255, \Imagick::CHANNEL_RED);
$this->image->evaluateImage(\Imagick::EVALUATE_ADD, $v * $g * 255, \Imagick::CHANNEL_GREEN);
$this->image->evaluateImage(\Imagick::EVALUATE_ADD, $v * $b * 255, \Imagick::CHANNEL_BLUE);
}
}