enhance: ドライブに画像ファイルをアップロードするときオリジナル画像を破棄してwebpublicのみ保持するオプション (#8216)

* wip

* Update packages/client/src/os.ts

Co-authored-by: tamaina <tamaina@hotmail.co.jp>

* メニューをComposition API化、switchアイテム追加
クライアントサイド画像圧縮の準備

* メニュー型定義を分離 (TypeScriptの型支援が効かないので)

* disabled

* make keepOriginal to follow setting value

* :v:

* fix

* fix

* :v:

* WEBP

* aaa

* :v:

* webp

* lazy load browser-image-resizer

* rename

* rename 2

* Fix

* clean up

* add comment

* clean up

* jpeg, pngにもどす

* fix

* fix name

* webpでなくする ただしサムネやプレビューはwebpのまま (テスト)

* 動画サムネイルはjpegに

* エラーハンドリング

* :v:

* v2.2.1-misskey-beta.2

* browser-image-resizer#v2.2.1-misskey.1

* :v:

* fix alert

* update browser-image-resizer to v2.2.1-misskey.2

* lockfile

Co-authored-by: mei23 <m@m544.net>
Co-authored-by: MeiMei <30769358+mei23@users.noreply.github.com>

3 files changed, 23 insertions, 35 deletions

diff --git a/packages/backend/src/services/drive/add-file.ts b/packages/backend/src/services/drive/add-file.ts
index 549b11c9fe..cfbcb60ddf 100644
--- a/packages/backend/src/services/drive/add-file.ts
+++ b/packages/backend/src/services/drive/add-file.ts
@@ -7,7 +7,7 @@ import { deleteFile } from './delete-file.js';
 import { fetchMeta } from '@/misc/fetch-meta.js';
 import { GenerateVideoThumbnail } from './generate-video-thumbnail.js';
 import { driveLogger } from './logger.js';
-import { IImage, convertSharpToJpeg, convertSharpToWebp, convertSharpToPng, convertSharpToPngOrJpeg } from './image-processor.js';
+import { IImage, convertSharpToJpeg, convertSharpToWebp, convertSharpToPng } from './image-processor.js';
 import { contentDisposition } from '@/misc/content-disposition.js';
 import { getFileInfo } from '@/misc/get-file-info.js';
 import { DriveFiles, DriveFolders, Users, Instances, UserProfiles } from '@/models/index.js';
@@ -179,6 +179,7 @@ export async function generateAlts(path: string, type: string, generateWeb: bool
 	}
 
 	let img: sharp.Sharp | null = null;
+	let satisfyWebpublic: boolean;
 
 	try {
 		img = sharp(path);
@@ -192,6 +193,13 @@ export async function generateAlts(path: string, type: string, generateWeb: bool
 				thumbnail: null,
 			};
 		}
+
+		satisfyWebpublic = !!(
+			type !== 'image/svg+xml' && type !== 'image/webp' &&
+			!(metadata.exif || metadata.iptc || metadata.xmp || metadata.tifftagPhotoshop) &&
+			metadata.width && metadata.width <= 2048 &&
+			metadata.height && metadata.height <= 2048
+		);
 	} catch (err) {
 		logger.warn(`sharp failed: ${err}`);
 		return {
@@ -203,15 +211,15 @@ export async function generateAlts(path: string, type: string, generateWeb: bool
 	// #region webpublic
 	let webpublic: IImage | null = null;
 
-	if (generateWeb) {
+	if (generateWeb && !satisfyWebpublic) {
 		logger.info(`creating web image`);
 
 		try {
-			if (['image/jpeg'].includes(type)) {
+			if (['image/jpeg', 'image/webp'].includes(type)) {
 				webpublic = await convertSharpToJpeg(img, 2048, 2048);
-			} else if (['image/webp'].includes(type)) {
-				webpublic = await convertSharpToWebp(img, 2048, 2048);
-			} else if (['image/png', 'image/svg+xml'].includes(type)) {
+			} else if (['image/png'].includes(type)) {
+				webpublic = await convertSharpToPng(img, 2048, 2048);
+			} else if (['image/svg+xml'].includes(type)) {
 				webpublic = await convertSharpToPng(img, 2048, 2048);
 			} else {
 				logger.debug(`web image not created (not an required image)`);
@@ -220,7 +228,8 @@ export async function generateAlts(path: string, type: string, generateWeb: bool
 			logger.warn(`web image not created (an error occured)`, err as Error);
 		}
 	} else {
-		logger.info(`web image not created (from remote)`);
+		if (satisfyWebpublic) logger.info(`web image not created (original satisfies webpublic)`);
+		else logger.info(`web image not created (from remote)`);
 	}
 	// #endregion webpublic
 
@@ -228,10 +237,8 @@ export async function generateAlts(path: string, type: string, generateWeb: bool
 	let thumbnail: IImage | null = null;
 
 	try {
-		if (['image/jpeg', 'image/webp'].includes(type)) {
-			thumbnail = await convertSharpToJpeg(img, 498, 280);
-		} else if (['image/png', 'image/svg+xml'].includes(type)) {
-			thumbnail = await convertSharpToPngOrJpeg(img, 498, 280);
+		if (['image/jpeg', 'image/webp', 'image/png', 'image/svg+xml'].includes(type)) {
+			thumbnail = await convertSharpToWebp(img, 498, 280);
 		} else {
 			logger.debug(`thumbnail not created (not an required file)`);
 		}
diff --git a/packages/backend/src/services/drive/generate-video-thumbnail.ts b/packages/backend/src/services/drive/generate-video-thumbnail.ts
index 04a7a83346..da93bc97c7 100644
--- a/packages/backend/src/services/drive/generate-video-thumbnail.ts
+++ b/packages/backend/src/services/drive/generate-video-thumbnail.ts
@@ -27,6 +27,7 @@ export async function GenerateVideoThumbnail(path: string): Promise<IImage> {
 
 	const outPath = `${outDir}/output.png`;
 
+	// JPEGに変換 (Webpでもいいが、MastodonはWebpをサポートせず表示できなくなる)
 	const thumbnail = await convertToJpeg(outPath, 498, 280);
 
 	// cleanup
diff --git a/packages/backend/src/services/drive/image-processor.ts b/packages/backend/src/services/drive/image-processor.ts
index 146dcfb6ca..2c564ea595 100644
--- a/packages/backend/src/services/drive/image-processor.ts
+++ b/packages/backend/src/services/drive/image-processor.ts
@@ -38,11 +38,11 @@ export async function convertSharpToJpeg(sharp: sharp.Sharp, width: number, heig
  * Convert to WebP
  *   with resize, remove metadata, resolve orientation, stop animation
  */
-export async function convertToWebp(path: string, width: number, height: number): Promise<IImage> {
-	return convertSharpToWebp(await sharp(path), width, height);
+export async function convertToWebp(path: string, width: number, height: number, quality: number = 85): Promise<IImage> {
+	return convertSharpToWebp(await sharp(path), width, height, quality);
 }
 
-export async function convertSharpToWebp(sharp: sharp.Sharp, width: number, height: number): Promise<IImage> {
+export async function convertSharpToWebp(sharp: sharp.Sharp, width: number, height: number, quality: number = 85): Promise<IImage> {
 	const data = await sharp
 		.resize(width, height, {
 			fit: 'inside',
@@ -50,7 +50,7 @@ export async function convertSharpToWebp(sharp: sharp.Sharp, width: number, heig
 		})
 		.rotate()
 		.webp({
-			quality: 85,
+			quality,
 		})
 		.toBuffer();
 
@@ -85,23 +85,3 @@ export async function convertSharpToPng(sharp: sharp.Sharp, width: number, heigh
 		type: 'image/png',
 	};
 }
-
-/**
- * Convert to PNG or JPEG
- *   with resize, remove metadata, resolve orientation, stop animation
- */
-export async function convertToPngOrJpeg(path: string, width: number, height: number): Promise<IImage> {
-	return convertSharpToPngOrJpeg(await sharp(path), width, height);
-}
-
-export async function convertSharpToPngOrJpeg(sharp: sharp.Sharp, width: number, height: number): Promise<IImage> {
-	const stats = await sharp.stats();
-	const metadata = await sharp.metadata();
-
-	// 不透明で300x300pxの範囲を超えていればJPEG
-	if (stats.isOpaque && ((metadata.width && metadata.width >= 300) || (metadata.height && metadata!.height >= 300))) {
-		return await convertSharpToJpeg(sharp, width, height);
-	} else {
-		return await convertSharpToPng(sharp, width, height);
-	}
-}