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feat(QMCv2): Allow extraction of songId from QMC2-wasm

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(cherry picked from commit 9ca2d852ce713255caeb8424a2724cb936434f18)
This commit is contained in:
鲁树人
2021-12-25 12:07:14 +00:00
parent 0af8a0d714
commit f6c34cd7ba
2 changed files with 43 additions and 14 deletions
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24
src/decrypt/qmc.ts
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@@ -3,6 +3,7 @@ import { AudioMimeType, GetArrayBuffer, SniffAudioExt } from '@/decrypt/utils';
import { DecryptResult } from '@/decrypt/entity';
import { QmcDeriveKey } from '@/decrypt/qmc_key';
import { DecryptQMCWasm } from '@/decrypt/qmc_wasm';
import { extractQQMusicMeta } from '@/utils/qm_meta';
interface Handler {
@@ -41,17 +42,20 @@ export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string)
const fileBuffer = await GetArrayBuffer(file);
let musicDecoded: Uint8Array | undefined;
let musicID: number | undefined;
let musicID: number | string | undefined;
// todo: wasm decoder doesn't support extract the song id for .mgg1/.mflac0 currently
// if (version === 2 && globalThis.WebAssembly) {
// console.log('qmc: using wasm decoder');
// const v2Decrypted = await DecryptQMCWasm(fileBuffer);
// // 如果 v2 检测失败，降级到 v1 再尝试一次
// if (v2Decrypted) {
// musicDecoded = v2Decrypted;
// }
// }
if (version === 2 && globalThis.WebAssembly) {
console.log('qmc: using wasm decoder');
const v2Decrypted = await DecryptQMCWasm(fileBuffer);
// 若 v2 检测失败，降级到 v1 再尝试一次
if (v2Decrypted.success) {
musicDecoded = v2Decrypted.data;
musicID = v2Decrypted.songId;
} else {
console.warn('qmc2-wasm failed with error %s', v2Decrypted.error || '(no error)');
}
}
if (!musicDecoded) {
// may throw error