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Added ID3v2 support for FLAC files. (Fixes #417) (#418)

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* Added ID3v2 support for FLAC files.  (Fixes #417)

* Fix ID3v2 header size calculation, adjust ID3v2 logic for FLAC files

---------

Co-authored-by: Vanilagy <[email protected]>
This commit is contained in:
Brad Isbell
2026-06-18 16:40:43 +00:00
committed by GitHub
co-authored by Vanilagy
parent 5b890efc29
commit 92a384f418
6 changed files with 117 additions and 17 deletions
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src/id3.ts
+10 -11
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@@ -152,7 +152,11 @@ export const readId3V2Header = (slice: FileSlice): Id3V2Header | null => {
return null;
}
const size = decodeSynchsafe(sizeRaw);
let size = decodeSynchsafe(sizeRaw);
if (flags & Id3V2HeaderFlags.Footer) {
size += ID3_V2_HEADER_SIZE;
}
return { majorVersion, revision, flags, size };
};
@@ -165,12 +169,12 @@ export const parseId3V2Tag = (slice: FileSlice, header: Id3V2Header, tags: Metad
return;
}
const bytes = readBytes(slice, header.size);
const reader = new Id3V2Reader(header, bytes);
const dataSize = (header.flags & Id3V2HeaderFlags.Footer)
? header.size - ID3_V2_HEADER_SIZE
: header.size;
if (header.flags & Id3V2HeaderFlags.Footer) {
reader.removeFooter();
}
const bytes = readBytes(slice, dataSize);
const reader = new Id3V2Reader(header, bytes);
if ((header.flags & Id3V2HeaderFlags.Unsynchronisation) && header.majorVersion === 3) {
reader.ununsynchronizeAll();
@@ -463,11 +467,6 @@ export class Id3V2Reader {
this.view = new DataView(this.bytes.buffer);
}
removeFooter() {
this.bytes = this.bytes.subarray(0, this.bytes.length - ID3_V2_HEADER_SIZE);
this.view = new DataView(this.bytes.buffer);
}
readBytes(length: number) {
const slice = this.bytes.subarray(this.pos, this.pos + length);
this.pos += length;