mirror of
https://github.com/arcodange-org/mediabunny.git
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6aee4e6a6a
* Read ID3v2 tags from WAV file * remove js import Co-authored-by: David P. <[email protected]> * revert slicing in wave-demuxer.ts and add id3.ts for further sharing * Add `writeId3Tag` to the `WavOutputFormat` constructor options * add more context in private and public APIs that it's non-standard * compare actual values in the test with real file * remove unnecesarry double slice requesting * trim test audio file (i tried my best to preserve ID3, including artwork) * Couple of code cleanups * const -> using * Fix linting errors --------- Co-authored-by: David P. <[email protected]>
35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
/*!
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* Copyright (c) 2025-present, Vanilagy and contributors
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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import { FRAME_HEADER_SIZE, FrameHeader, readFrameHeader } from '../../shared/mp3-misc';
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import { Reader, readU32Be } from '../reader';
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export const readNextFrameHeader = async (reader: Reader, startPos: number, until: number | null): Promise<{
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header: FrameHeader;
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startPos: number;
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} | null> => {
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let currentPos = startPos;
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while (until === null || currentPos < until) {
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let slice = reader.requestSlice(currentPos, FRAME_HEADER_SIZE);
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if (slice instanceof Promise) slice = await slice;
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if (!slice) break;
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const word = readU32Be(slice);
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const result = readFrameHeader(word, reader.fileSize !== null ? reader.fileSize - currentPos : null);
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if (result.header) {
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return { header: result.header, startPos: currentPos };
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}
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currentPos += result.bytesAdvanced;
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}
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return null;
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};
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