feat(ui): increase cover art size to 600px and use CatmullRom scaling

Increased the UI cover art request size from 300px to 600px for sharper
images on high-DPI displays. Replaced BiLinear with CatmullRom (bicubic)
interpolation for higher quality image resizing. Extracted the hardcoded
size into a COVER_ART_SIZE constant in the frontend and consolidated
backend sizes into a CacheWarmerImageSizes slice. Removed the unused
UIThumbnailSize constant.

Signed-off-by: Deluan <deluan@navidrome.org>

consts/consts.go

@@ -70,8 +70,6 @@ const (
 	PlaceholderArtistArt      = "artist-placeholder.webp"
 	PlaceholderAlbumArt       = "album-placeholder.webp"
 	PlaceholderAvatar         = "logo-192x192.png"
-	UICoverArtSize            = 300
-	UIThumbnailSize           = 80
 	DefaultUIVolume           = 100
 	DefaultUISearchDebounceMs = 200
 
@@ -86,6 +84,12 @@ const (
 	Zwsp                    = string('\u200b')
 )
 
+const (
+	UICoverArtSize = 600
+)
+
+var CacheWarmerImageSizes = []int{UICoverArtSize}
+
 // Prometheus options
 const (
 	PrometheusDefaultPath = "/metrics"

core/artwork/cache_warmer.go

@@ -142,15 +142,14 @@ func (a *cacheWarmer) doCacheImage(ctx context.Context, id model.ArtworkID) erro
 	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
 	defer cancel()
 
-	for _, size := range []int{consts.UICoverArtSize, consts.UIThumbnailSize} {
+	for _, size := range consts.CacheWarmerImageSizes {
 		r, _, err := a.artwork.Get(ctx, id, size, true)
 		if err != nil {
 			return fmt.Errorf("caching id='%s', size=%d: %w", id, size, err)
 		}
-		defer r.Close()
-		if _, err = io.Copy(io.Discard, r); err != nil {
-			return err
-		}
+		_, err = io.Copy(io.Discard, r)
+		r.Close()
+		return err
 	}
 	return nil
 }

core/artwork/cache_warmer_test.go

@@ -176,13 +176,13 @@ var _ = Describe("CacheWarmer", func() {
 			}).Should(Equal(0))
 		})
 
-		It("pre-caches both UICoverArtSize and UIThumbnailSize", func() {
+		It("pre-caches UICoverArtSize", func() {
 			cw := NewCacheWarmer(aw, fc).(*cacheWarmer)
 			cw.PreCache(model.MustParseArtworkID("al-1"))
 
 			Eventually(func() []int {
 				return aw.getCachedSizes()
-			}).Should(ContainElements(consts.UICoverArtSize, consts.UIThumbnailSize))
+			}).Should(ContainElements(consts.UICoverArtSize))
 		})
 	})
 })

core/artwork/reader_playlist.go

@@ -264,6 +264,6 @@ func fillCenter(src image.Image, dstW, dstH int) image.Image {
 	}
 
 	dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH))
-	xdraw.BiLinear.Scale(dst, dst.Bounds(), src, cropRect, draw.Src, nil)
+	xdraw.CatmullRom.Scale(dst, dst.Bounds(), src, cropRect, draw.Src, nil)
 	return dst
 }

core/artwork/reader_resized.go

@@ -155,7 +155,7 @@ func resizeStaticImage(data []byte, size int, square bool) (io.Reader, int, erro
 		dst = image.NewNRGBA(image.Rect(0, 0, dstW, dstH))
 		dstRect = dst.Bounds()
 	}
-	xdraw.BiLinear.Scale(dst, dstRect, original, bounds, draw.Src, nil)
+	xdraw.CatmullRom.Scale(dst, dstRect, original, bounds, draw.Src, nil)
 
 	buf := bufPool.Get().(*bytes.Buffer)
 	buf.Reset()

ui/src/album/AlbumDetails.jsx

@@ -18,6 +18,7 @@ import {
   useTranslate,
 } from 'react-admin'
 import Lightbox from 'react-image-lightbox'
+import { COVER_ART_SIZE } from '../consts'
 import 'react-image-lightbox/style.css'
 import subsonic from '../subsonic'
 import {
@@ -254,7 +255,7 @@ const AlbumDetails = (props) => {
       })
   }, [record])
 
-  const imageUrl = subsonic.getCoverArtUrl(record, 300)
+  const imageUrl = subsonic.getCoverArtUrl(record, COVER_ART_SIZE)
   const fullImageUrl = subsonic.getCoverArtUrl(record)
 
   return (

ui/src/album/AlbumGridView.jsx

@@ -19,7 +19,7 @@ import {
   ArtistLinkField,
   OverflowTooltip,
 } from '../common'
-import { DraggableTypes } from '../consts'
+import { COVER_ART_SIZE, DraggableTypes } from '../consts'
 import clsx from 'clsx'
 import { AlbumDatesField } from './AlbumDatesField.jsx'
 
@@ -157,7 +157,7 @@ const Cover = withContentRect('bounds')(({
       <div ref={dragAlbumRef}>
         <img
           key={record.id} // Force re-render when record changes
-          src={subsonic.getCoverArtUrl(record, 300, true)}
+          src={subsonic.getCoverArtUrl(record, COVER_ART_SIZE, true)}
           alt={record.name}
           className={`${classes.cover} ${imageLoading ? classes.coverLoading : ''}`}
           onLoad={handleImageLoad}

ui/src/artist/DesktopArtistDetails.jsx

@@ -15,6 +15,7 @@ import {
 import Lightbox from 'react-image-lightbox'
 import ExpandInfoDialog from '../dialogs/ExpandInfoDialog'
 import AlbumInfo from '../album/AlbumInfo'
+import { COVER_ART_SIZE } from '../consts'
 import subsonic from '../subsonic'
 import { SafeHTML } from '../common/SafeHTML'
 
@@ -109,7 +110,7 @@ const DesktopArtistDetails = ({ artistInfo, record, biography }) => {
             <CardMedia
               key={record.id}
               component="img"
-              src={subsonic.getCoverArtUrl(record, 300)}
+              src={subsonic.getCoverArtUrl(record, COVER_ART_SIZE)}
               className={`${classes.cover} ${imageLoading ? classes.coverLoading : ''}`}
               onClick={handleOpenLightbox}
               onLoad={handleImageLoad}

ui/src/artist/MobileArtistDetails.jsx

@@ -11,6 +11,7 @@ import {
   useImageLoadingState,
 } from '../common'
 import Lightbox from 'react-image-lightbox'
+import { COVER_ART_SIZE } from '../consts'
 import subsonic from '../subsonic'
 import { SafeHTML } from '../common/SafeHTML'
 
@@ -112,7 +113,7 @@ const MobileArtistDetails = ({ artistInfo, biography, record }) => {
               <CardMedia
                 key={record.id}
                 component="img"
-                src={subsonic.getCoverArtUrl(record, 300)}
+                src={subsonic.getCoverArtUrl(record, COVER_ART_SIZE)}
                 className={`${classes.cover} ${imageLoading ? classes.coverLoading : ''}`}
                 onClick={handleOpenLightbox}
                 onLoad={handleImageLoad}

ui/src/common/CoverArtAvatar.jsx

@@ -2,6 +2,7 @@ import { useRecordContext } from 'react-admin'
 import { Avatar } from '@material-ui/core'
 import { makeStyles } from '@material-ui/core/styles'
 import clsx from 'clsx'
+import { COVER_ART_SIZE } from '../consts'
 import subsonic from '../subsonic'
 
 const useStyles = makeStyles({
@@ -25,7 +26,7 @@ export const CoverArtAvatar = ({
   const square = variant !== 'circular'
   return (
     <Avatar
-      src={subsonic.getCoverArtUrl(record, 80, square)}
+      src={subsonic.getCoverArtUrl(record, COVER_ART_SIZE, square)}
       variant={variant}
       className={clsx(classes.avatar, square && classes.square)}
       alt={record.name}

ui/src/consts.js

@@ -26,6 +26,8 @@ DraggableTypes.ALL.push(
 
 export const RADIO_PLACEHOLDER_IMAGE = 'internet-radio-icon.svg'
 
+export const COVER_ART_SIZE = 600
+
 export const DEFAULT_SHARE_BITRATE = 128
 
 export const BITRATE_CHOICES = [

ui/src/playlist/PlaylistDetails.jsx

@@ -18,6 +18,7 @@ import {
   OverflowTooltip,
   useImageLoadingState,
 } from '../common'
+import { COVER_ART_SIZE } from '../consts'
 import subsonic from '../subsonic'
 
 const useStyles = makeStyles(
@@ -106,7 +107,7 @@ const PlaylistDetails = (props) => {
     handleCloseLightbox,
   } = useImageLoadingState(record.id)
 
-  const imageUrl = subsonic.getCoverArtUrl(record, 300, true)
+  const imageUrl = subsonic.getCoverArtUrl(record, COVER_ART_SIZE, true)
   const fullImageUrl = subsonic.getCoverArtUrl(record)
 
   return (

ui/src/radio/RadioEdit.jsx

@@ -11,7 +11,7 @@ import { makeStyles } from '@material-ui/core/styles'
 import { urlValidate } from '../utils/validations'
 import { Title, ImageUploadOverlay, useImageLoadingState } from '../common'
 import subsonic from '../subsonic'
-import { RADIO_PLACEHOLDER_IMAGE } from '../consts'
+import { COVER_ART_SIZE, RADIO_PLACEHOLDER_IMAGE } from '../consts'
 
 const useStyles = makeStyles({
   coverParent: {
@@ -83,7 +83,7 @@ const RadioCoverArt = ({ record }) => {
       {record.uploadedImage ? (
         <CardMedia
           component="img"
-          src={subsonic.getCoverArtUrl(record, 300, true)}
+          src={subsonic.getCoverArtUrl(record, COVER_ART_SIZE, true)}
           className={`${classes.cover} ${imageLoading ? classes.coverLoading : ''}`}
           onLoad={handleImageLoad}
           onError={handleImageError}

ui/src/radio/helper.jsx

@@ -1,5 +1,5 @@
 import subsonic from '../subsonic'
-import { RADIO_PLACEHOLDER_IMAGE } from '../consts'
+import { COVER_ART_SIZE, RADIO_PLACEHOLDER_IMAGE } from '../consts'
 
 export async function songFromRadio(radio) {
   if (!radio) {
@@ -8,7 +8,7 @@ export async function songFromRadio(radio) {
 
   let cover = RADIO_PLACEHOLDER_IMAGE
   if (radio.uploadedImage) {
-    cover = subsonic.getCoverArtUrl(radio, 300, true)
+    cover = subsonic.getCoverArtUrl(radio, COVER_ART_SIZE, true)
   } else {
     // Try favicon as fallback
     try {

ui/src/subsonic/index.test.js

@@ -1,4 +1,5 @@
 import { vi } from 'vitest'
+import { COVER_ART_SIZE } from '../consts'
 import subsonic from './index'
 
 describe('getCoverArtUrl', () => {
@@ -30,10 +31,10 @@ describe('getCoverArtUrl', () => {
       updatedAt: '2023-01-01T00:00:00Z',
     }
 
-    const url = subsonic.getCoverArtUrl(playlistRecord, 300, true)
+    const url = subsonic.getCoverArtUrl(playlistRecord, COVER_ART_SIZE, true)
 
     expect(url).toContain('pl-playlist-123')
-    expect(url).toContain('size=300')
+    expect(url).toContain('size=600')
     expect(url).toContain('square=true')
     expect(url).toContain('_=2023-01-01T00%3A00%3A00Z')
   })
@@ -44,10 +45,10 @@ describe('getCoverArtUrl', () => {
       sync: true,
     }
 
-    const url = subsonic.getCoverArtUrl(playlistRecord, 300, true)
+    const url = subsonic.getCoverArtUrl(playlistRecord, COVER_ART_SIZE, true)
 
     expect(url).toContain('pl-playlist-123')
-    expect(url).toContain('size=300')
+    expect(url).toContain('size=600')
     expect(url).toContain('square=true')
     expect(url).not.toContain('_=')
   })
@@ -59,10 +60,10 @@ describe('getCoverArtUrl', () => {
       updatedAt: '2023-01-01T00:00:00Z',
     }
 
-    const url = subsonic.getCoverArtUrl(albumRecord, 300, true)
+    const url = subsonic.getCoverArtUrl(albumRecord, COVER_ART_SIZE, true)
 
     expect(url).toContain('al-album-123')
-    expect(url).toContain('size=300')
+    expect(url).toContain('size=600')
     expect(url).toContain('square=true')
   })
 
@@ -73,10 +74,10 @@ describe('getCoverArtUrl', () => {
       updatedAt: '2023-01-01T00:00:00Z',
     }
 
-    const url = subsonic.getCoverArtUrl(songRecord, 300, true)
+    const url = subsonic.getCoverArtUrl(songRecord, COVER_ART_SIZE, true)
 
     expect(url).toContain('mf-song-123')
-    expect(url).toContain('size=300')
+    expect(url).toContain('size=600')
     expect(url).toContain('square=true')
   })
 
@@ -86,10 +87,10 @@ describe('getCoverArtUrl', () => {
       updatedAt: '2023-01-01T00:00:00Z',
     }
 
-    const url = subsonic.getCoverArtUrl(artistRecord, 300, true)
+    const url = subsonic.getCoverArtUrl(artistRecord, COVER_ART_SIZE, true)
 
     expect(url).toContain('ar-artist-123')
-    expect(url).toContain('size=300')
+    expect(url).toContain('size=600')
     expect(url).toContain('square=true')
   })