29 lines
996 B
TypeScript
29 lines
996 B
TypeScript
import { AudioMimeType, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile, SniffAudioExt } from '@/decrypt/utils';
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import { DecryptResult } from '@/decrypt/entity';
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import { parseBlob as metaParseBlob } from 'music-metadata-browser';
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export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string): Promise<DecryptResult> {
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const buffer = new Uint8Array(await GetArrayBuffer(file));
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let length = buffer.length;
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for (let i = 0; i < length; i++) {
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buffer[i] ^= 163;
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}
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const ext = SniffAudioExt(buffer, raw_ext);
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if (ext !== raw_ext) file = new Blob([buffer], { type: AudioMimeType[ext] });
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const tag = await metaParseBlob(file);
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const { title, artist } = GetMetaFromFile(raw_filename, tag.common.title, String(tag.common.artists || tag.common.artist || ""));
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return {
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title,
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artist,
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ext,
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album: tag.common.album,
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picture: GetCoverFromFile(tag),
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file: URL.createObjectURL(file),
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blob: file,
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mime: AudioMimeType[ext],
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};
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}
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