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Enabling high quality chroma subsampling for webp by default in the hope of slightly nicer thumbnail quality #558
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@ -4,11 +4,7 @@ import * as os from 'os';
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import * as crypto from 'crypto';
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import {ProjectPath} from '../../ProjectPath';
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import {Config} from '../../../common/config/private/Config';
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import {
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PhotoWorker,
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RendererInput,
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ThumbnailSourceType,
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} from '../threading/PhotoWorker';
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import {PhotoWorker, RendererInput, ThumbnailSourceType,} from '../threading/PhotoWorker';
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import {ITaskExecuter, TaskExecuter} from '../threading/TaskExecuter';
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import {FaceRegion, PhotoDTO} from '../../../common/entities/PhotoDTO';
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import {SupportedFormats} from '../../../common/SupportedFormats';
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@ -124,7 +120,7 @@ export class PhotoProcessing {
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return path.join(
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ProjectPath.TranscodedFolder,
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ProjectPath.getRelativePathToImages(path.dirname(mediaPath)),
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file + '_' + size + 'q' + Config.Media.Thumbnail.quality + PhotoProcessing.CONVERTED_EXTENSION
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file + '_' + size + 'q' + Config.Media.Thumbnail.quality + (Config.Media.Thumbnail.smartSubsample ? 'cs' : '') + PhotoProcessing.CONVERTED_EXTENSION
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);
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}
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@ -257,6 +253,7 @@ export class PhotoProcessing {
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makeSquare,
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useLanczos3: Config.Media.Thumbnail.useLanczos3,
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quality: Config.Media.Thumbnail.quality,
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smartSubsample: Config.Media.Thumbnail.smartSubsample,
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} as RendererInput;
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const outDir = path.dirname(input.outPath);
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@ -46,6 +46,7 @@ export interface RendererInput {
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outPath: string;
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quality: number;
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useLanczos3: boolean;
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smartSubsample: boolean;
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cut?: {
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left: number;
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top: number;
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@ -162,7 +163,7 @@ export class ImageRendererFactory {
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fit: 'cover',
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});
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}
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await image.rotate().webp({effort: 6, quality: input.quality}).toFile(input.outPath);
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await image.rotate().webp({effort: 6, quality: input.quality, smartSubsample: input.smartSubsample}).toFile(input.outPath);
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};
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}
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}
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@ -313,6 +313,16 @@ export class ServerThumbnailConfig extends ClientThumbnailConfig {
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description: $localize`Between 0-100.`
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})
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quality = 80;
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@ConfigProperty({
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type: 'boolean',
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tags:
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{
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name: $localize`Use chroma subsampling.`,
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priority: ConfigPriority.underTheHood
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},
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description: $localize`Use high quality chroma subsampling in webp. See: https://sharp.pixelplumbing.com/api-output#webp.`
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})
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smartSubsample = true;
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@ConfigProperty({
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type: 'ratio',
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tags:
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