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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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This commit is contained in:
Patrik J. Braun 2023-03-29 00:28:43 +02:00
parent b8cf00c076
commit c181bd5fb5
3 changed files with 15 additions and 7 deletions
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9
src/backend/model/fileprocessing/PhotoProcessing.ts
View File

@ -4,11 +4,7 @@ import * as os from 'os';
import * as crypto from 'crypto';
import {ProjectPath} from '../../ProjectPath';
import {Config} from '../../../common/config/private/Config';
import {
PhotoWorker,
RendererInput,
ThumbnailSourceType,
} from '../threading/PhotoWorker';
import {PhotoWorker, RendererInput, ThumbnailSourceType,} from '../threading/PhotoWorker';
import {ITaskExecuter, TaskExecuter} from '../threading/TaskExecuter';
import {FaceRegion, PhotoDTO} from '../../../common/entities/PhotoDTO';
import {SupportedFormats} from '../../../common/SupportedFormats';
@ -124,7 +120,7 @@ export class PhotoProcessing {
return path.join(
ProjectPath.TranscodedFolder,
ProjectPath.getRelativePathToImages(path.dirname(mediaPath)),
file + '_' + size + 'q' + Config.Media.Thumbnail.quality + PhotoProcessing.CONVERTED_EXTENSION
file + '_' + size + 'q' + Config.Media.Thumbnail.quality + (Config.Media.Thumbnail.smartSubsample ? 'cs' : '') + PhotoProcessing.CONVERTED_EXTENSION
);
}
@ -257,6 +253,7 @@ export class PhotoProcessing {
makeSquare,
useLanczos3: Config.Media.Thumbnail.useLanczos3,
quality: Config.Media.Thumbnail.quality,
smartSubsample: Config.Media.Thumbnail.smartSubsample,
} as RendererInput;
const outDir = path.dirname(input.outPath);

3
src/backend/model/threading/PhotoWorker.ts
View File

@ -46,6 +46,7 @@ export interface RendererInput {
outPath: string;
quality: number;
useLanczos3: boolean;
smartSubsample: boolean;
cut?: {
left: number;
top: number;
@ -162,7 +163,7 @@ export class ImageRendererFactory {
fit: 'cover',
});
}
await image.rotate().webp({effort: 6, quality: input.quality}).toFile(input.outPath);
await image.rotate().webp({effort: 6, quality: input.quality, smartSubsample: input.smartSubsample}).toFile(input.outPath);
};
}
}

10
src/common/config/private/PrivateConfig.ts
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@ -313,6 +313,16 @@ export class ServerThumbnailConfig extends ClientThumbnailConfig {
description: $localize`Between 0-100.`
})
quality = 80;
@ConfigProperty({
type: 'boolean',
tags:
{
name: $localize`Use chroma subsampling.`,
priority: ConfigPriority.underTheHood
},
description: $localize`Use high quality chroma subsampling in webp. See: https://sharp.pixelplumbing.com/api-output#webp.`
})
smartSubsample = true;
@ConfigProperty({
type: 'ratio',
tags: