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feat: add ISRC and copyright metadata support for M4A downloads

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This commit is contained in:
Julien Maille 2026-02-21 10:29:36 +01:00
parent 3cab0926e4
commit 2bd42fc202
1 changed files with 18 additions and 0 deletions
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18
js/metadata.js
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@ -69,6 +69,8 @@ export async function readTrackMetadata(file, siblings = []) {
artist: { name: 'Unknown Artist' }, // For fallback/compatibility
album: { title: 'Unknown Album', cover: 'assets/appicon.png', releaseDate: null },
duration: 0,
isrc: null,
copyright: null,
isLocal: true,
file: file,
id: `local-${file.name}-${file.lastModified}`,
@ -144,6 +146,8 @@ async function readFlacMetadata(file, metadata) {
artists.push(value);
}
if (upperKey === 'ALBUM') metadata.album.title = value;
if (upperKey === 'ISRC') metadata.isrc = value;
if (upperKey === 'COPYRIGHT') metadata.copyright = value;
}
}
}
@ -234,6 +238,10 @@ async function readM4aMetadata(file, metadata) {
metadata.album.title = new TextDecoder().decode(
new Uint8Array(view.buffer, contentOffset, contentLen)
);
} else if (item.type === 'ISRC') {
metadata.isrc = new TextDecoder().decode(new Uint8Array(view.buffer, contentOffset, contentLen));
} else if (item.type === 'cprt') {
metadata.copyright = new TextDecoder().decode(new Uint8Array(view.buffer, contentOffset, contentLen));
} else if (item.type === 'covr') {
const pictureData = new Uint8Array(view.buffer, contentOffset, contentLen);
const mime = getMimeType(pictureData);
@ -294,6 +302,8 @@ async function readMp3Metadata(file, metadata) {
if (frameId === 'TPE1') tpe1 = readID3Text(frameData);
if (frameId === 'TPE2') tpe2 = readID3Text(frameData);
if (frameId === 'TALB') metadata.album.title = readID3Text(frameData);
if (frameId === 'TSRC') metadata.isrc = readID3Text(frameData);
if (frameId === 'TCOP') metadata.copyright = readID3Text(frameData);
if (frameId === 'TYER' || frameId === 'TDRC') {
const year = readID3Text(frameData);
if (year) metadata.album.releaseDate = year;
@ -899,6 +909,14 @@ function createMp4MetadataAtoms(track) {
aART: track.album?.artist?.name || track.artist?.name || DEFAULT_ARTIST,
};
if (track.isrc) {
tags['ISRC'] = track.isrc;
}
if (track.copyright) {
tags['cprt'] = track.copyright;
}
if (track.trackNumber) {
tags['trkn'] = track.trackNumber;
}