Created dedicated artwork readers

core/artwork/reader_album.go

@@ -0,0 +1,58 @@
+package artwork
+
+import (
+	"context"
+	"io"
+	"strings"
+	"time"
+
+	"github.com/navidrome/navidrome/conf"
+	"github.com/navidrome/navidrome/core/ffmpeg"
+	"github.com/navidrome/navidrome/model"
+)
+
+type albumArtworkReader struct {
+	cacheItem
+	a     *artwork
+	album model.Album
+}
+
+func newAlbumArtworkReader(ctx context.Context, artwork *artwork, artID model.ArtworkID) (*albumArtworkReader, error) {
+	al, err := artwork.ds.Album(ctx).Get(artID.ID)
+	if err != nil {
+		return nil, err
+	}
+	a := &albumArtworkReader{
+		a:     artwork,
+		album: *al,
+	}
+	a.cacheItem.artID = artID
+	a.cacheItem.lastUpdate = al.UpdatedAt
+	return a, nil
+}
+
+func (a *albumArtworkReader) LastUpdated() time.Time {
+	return a.album.UpdatedAt
+}
+
+func (a *albumArtworkReader) Reader(ctx context.Context) (io.ReadCloser, string, error) {
+	var ff = fromCoverArtPriority(ctx, a.a.ffmpeg, conf.Server.CoverArtPriority, a.album)
+	ff = append(ff, fromPlaceholder())
+	r, source := extractImage(ctx, a.artID, ff...)
+	return r, source, nil
+}
+
+func fromCoverArtPriority(ctx context.Context, ffmpeg ffmpeg.FFmpeg, priority string, al model.Album) []sourceFunc {
+	var ff []sourceFunc
+	for _, pattern := range strings.Split(strings.ToLower(priority), ",") {
+		pattern = strings.TrimSpace(pattern)
+		if pattern == "embedded" {
+			ff = append(ff, fromTag(al.EmbedArtPath), fromFFmpegTag(ctx, ffmpeg, al.EmbedArtPath))
+			continue
+		}
+		if al.ImageFiles != "" {
+			ff = append(ff, fromExternalFile(ctx, al.ImageFiles, pattern))
+		}
+	}
+	return ff
+}