fix(server): thumbnail rotation when using embedded previews

server/src/constants.ts

@@ -1,6 +1,7 @@
 import { Duration } from 'luxon';
 import { readFileSync } from 'node:fs';
 import { SemVer } from 'semver';
+import { ExifOrientation } from 'src/enum';
 
 export const POSTGRES_VERSION_RANGE = '>=14.0.0';
 export const VECTORS_VERSION_RANGE = '>=0.2 <0.4';
@@ -81,3 +82,19 @@ export const CLIP_MODEL_INFO: Record<string, ModelInfo> = {
   'nllb-clip-large-siglip__mrl': { dimSize: 1152 },
   'nllb-clip-large-siglip__v1': { dimSize: 1152 },
 };
+
+type SharpRotationData = {
+  angle?: number;
+  flip?: boolean;
+  flop?: boolean;
+};
+export const ORIENTATION_TO_SHARP_ROTATION: Record<ExifOrientation, SharpRotationData> = {
+  [ExifOrientation.Horizontal]: { angle: 0 },
+  [ExifOrientation.MirrorHorizontal]: { angle: 0, flop: true },
+  [ExifOrientation.Rotate180]: { angle: 180 },
+  [ExifOrientation.MirrorVertical]: { angle: 180, flop: true },
+  [ExifOrientation.MirrorHorizontalRotate270CW]: { angle: 270, flip: true },
+  [ExifOrientation.Rotate90CW]: { angle: 90 },
+  [ExifOrientation.MirrorHorizontalRotate90CW]: { angle: 90, flip: true },
+  [ExifOrientation.Rotate270CW]: { angle: 270 },
+} as const;

server/src/enum.ts

@@ -373,3 +373,14 @@ export enum ImmichTelemetry {
   REPO = 'repo',
   JOB = 'job',
 }
+
+export enum ExifOrientation {
+  Horizontal = 1,
+  MirrorHorizontal = 2,
+  Rotate180 = 3,
+  MirrorVertical = 4,
+  MirrorHorizontalRotate270CW = 5,
+  Rotate90CW = 6,
+  MirrorHorizontalRotate90CW = 7,
+  Rotate270CW = 8,
+}

server/src/interfaces/media.interface.ts

@@ -1,5 +1,5 @@
 import { Writable } from 'node:stream';
-import { ImageFormat, TranscodeTarget, VideoCodec } from 'src/enum';
+import { ExifOrientation, ImageFormat, TranscodeTarget, VideoCodec } from 'src/enum';
 
 export const IMediaRepository = 'IMediaRepository';
 
@@ -31,6 +31,7 @@ interface DecodeImageOptions {
 
 export interface DecodeToBufferOptions extends DecodeImageOptions {
   size: number;
+  orientation?: ExifOrientation;
 }
 
 export type GenerateThumbnailOptions = ImageOptions & DecodeImageOptions;

server/src/repositories/media.repository.ts

@@ -5,6 +5,7 @@ import { Duration } from 'luxon';
 import fs from 'node:fs/promises';
 import { Writable } from 'node:stream';
 import sharp from 'sharp';
+import { ORIENTATION_TO_SHARP_ROTATION } from 'src/constants';
 import { Colorspace, LogLevel } from 'src/enum';
 import { ILoggerRepository } from 'src/interfaces/logger.interface';
 import {
@@ -82,7 +83,15 @@ export class MediaRepository implements IMediaRepository {
       .withIccProfile(options.colorspace);
 
     if (!options.raw) {
-      pipeline = pipeline.rotate();
+      const { angle, flip, flop } = options.orientation ? ORIENTATION_TO_SHARP_ROTATION[options.orientation] : {};
+      pipeline = pipeline.rotate(angle);
+      if (flip) {
+        pipeline = pipeline.flip();
+      }
+
+      if (flop) {
+        pipeline = pipeline.flop();
+      }
     }
 
     if (options.crop) {

server/src/services/media.service.ts

@@ -214,7 +214,8 @@ export class MediaService extends BaseService {
       const colorspace = this.isSRGB(asset) ? Colorspace.SRGB : image.colorspace;
       const processInvalidImages = process.env.IMMICH_PROCESS_INVALID_IMAGES === 'true';
 
-      const decodeOptions = { colorspace, processInvalidImages, size: image.preview.size };
+      const orientation = Number(asset.exifInfo?.orientation) || undefined;
+      const decodeOptions = { colorspace, processInvalidImages, size: image.preview.size, orientation };
       const { data, info } = await this.mediaRepository.decodeImage(inputPath, decodeOptions);
 
       const options = { colorspace, processInvalidImages, raw: info };

server/src/services/metadata.service.spec.ts

@@ -3,7 +3,7 @@ import { randomBytes } from 'node:crypto';
 import { Stats } from 'node:fs';
 import { constants } from 'node:fs/promises';
 import { ExifEntity } from 'src/entities/exif.entity';
-import { AssetType, ImmichWorker, SourceType } from 'src/enum';
+import { AssetType, ExifOrientation, ImmichWorker, SourceType } from 'src/enum';
 import { IAlbumRepository } from 'src/interfaces/album.interface';
 import { IAssetRepository, WithoutProperty } from 'src/interfaces/asset.interface';
 import { IConfigRepository } from 'src/interfaces/config.interface';
@@ -18,7 +18,7 @@ import { IStorageRepository } from 'src/interfaces/storage.interface';
 import { ISystemMetadataRepository } from 'src/interfaces/system-metadata.interface';
 import { ITagRepository } from 'src/interfaces/tag.interface';
 import { IUserRepository } from 'src/interfaces/user.interface';
-import { MetadataService, Orientation } from 'src/services/metadata.service';
+import { MetadataService } from 'src/services/metadata.service';
 import { assetStub } from 'test/fixtures/asset.stub';
 import { fileStub } from 'test/fixtures/file.stub';
 import { probeStub } from 'test/fixtures/media.stub';
@@ -539,7 +539,7 @@ describe(MetadataService.name, () => {
 
       expect(assetMock.getByIds).toHaveBeenCalledWith([assetStub.video.id], { faces: { person: false } });
       expect(assetMock.upsertExif).toHaveBeenCalledWith(
-        expect.objectContaining({ orientation: Orientation.Rotate270CW.toString() }),
+        expect.objectContaining({ orientation: ExifOrientation.Rotate270CW.toString() }),
       );
     });
 

server/src/services/metadata.service.ts

@@ -12,7 +12,7 @@ import { AssetFaceEntity } from 'src/entities/asset-face.entity';
 import { AssetEntity } from 'src/entities/asset.entity';
 import { ExifEntity } from 'src/entities/exif.entity';
 import { PersonEntity } from 'src/entities/person.entity';
-import { AssetType, ImmichWorker, SourceType } from 'src/enum';
+import { AssetType, ExifOrientation, ImmichWorker, SourceType } from 'src/enum';
 import { WithoutProperty } from 'src/interfaces/asset.interface';
 import { DatabaseLock } from 'src/interfaces/database.interface';
 import { ArgOf } from 'src/interfaces/event.interface';
@@ -36,17 +36,6 @@ const EXIF_DATE_TAGS: Array<keyof Tags> = [
   'DateTimeCreated',
 ];
 
-export enum Orientation {
-  Horizontal = 1,
-  MirrorHorizontal = 2,
-  Rotate180 = 3,
-  MirrorVertical = 4,
-  MirrorHorizontalRotate270CW = 5,
-  Rotate90CW = 6,
-  MirrorHorizontalRotate90CW = 7,
-  Rotate270CW = 8,
-}
-
 const validate = <T>(value: T): NonNullable<T> | null => {
   // handle lists of numbers
   if (Array.isArray(value)) {
@@ -676,19 +665,19 @@ export class MetadataService extends BaseService {
     if (videoStreams[0]) {
       switch (videoStreams[0].rotation) {
         case -90: {
-          tags.Orientation = Orientation.Rotate90CW;
+          tags.Orientation = ExifOrientation.Rotate90CW;
           break;
         }
         case 0: {
-          tags.Orientation = Orientation.Horizontal;
+          tags.Orientation = ExifOrientation.Horizontal;
           break;
         }
         case 90: {
-          tags.Orientation = Orientation.Rotate270CW;
+          tags.Orientation = ExifOrientation.Rotate270CW;
           break;
         }
         case 180: {
-          tags.Orientation = Orientation.Rotate180;
+          tags.Orientation = ExifOrientation.Rotate180;
           break;
         }
       }