refactor(typescript): utils.GetArrayBuffer

src/decrypt/kgm.js

@@ -1,5 +1,5 @@
-import {AudioMimeType, GetArrayBuffer, GetFileInfo, GetMetaCoverURL} from "./util";
+import {AudioMimeType, GetFileInfo, GetMetaCoverURL} from "./util";
-import {BytesHasPrefix, SniffAudioExt} from "@/decrypt/utils.ts";
+import {BytesHasPrefix, GetArrayBuffer, SniffAudioExt} from "@/decrypt/utils.ts";
 
 const musicMetadata = require("music-metadata-browser");
 const VprHeader = [

src/decrypt/kwm.js

@@ -1,5 +1,5 @@
-import {AudioMimeType, GetArrayBuffer, GetFileInfo, GetMetaCoverURL} from "./util";
+import {AudioMimeType, GetFileInfo, GetMetaCoverURL} from "./util";
-import {BytesHasPrefix, SniffAudioExt} from "@/decrypt/utils.ts";
+import {BytesHasPrefix, GetArrayBuffer, SniffAudioExt} from "@/decrypt/utils.ts";
 
 const musicMetadata = require("music-metadata-browser");
 const MagicHeader = [

src/decrypt/ncm.js

@@ -1,4 +1,4 @@
-import {BytesHasPrefix, SniffAudioExt} from "@/decrypt/utils.ts";
+import {BytesHasPrefix, GetArrayBuffer, SniffAudioExt} from "@/decrypt/utils.ts";
 
 const CryptoJS = require("crypto-js");
 const MetaFlac = require('metaflac-js');
@@ -10,7 +10,6 @@ import jimp from 'jimp';
 
 import {
     AudioMimeType,
-    GetArrayBuffer,
     GetFileInfo,
     GetWebImage,
     WriteMp3Meta

src/decrypt/qmc.js

@@ -1,6 +1,5 @@
 import {
     AudioMimeType,
-    GetArrayBuffer,
     GetFileInfo,
     GetMetaCoverURL,
     GetWebImage,
@@ -9,7 +8,7 @@ import {
 } from "./util";
 import {QmcMaskCreate58, QmcMaskDetectMflac, QmcMaskDetectMgg, QmcMaskGetDefault} from "./qmcMask";
 import {fromByteArray as Base64Encode, toByteArray as Base64Decode} from 'base64-js'
-import {SniffAudioExt} from "@/decrypt/utils.ts";
+import {GetArrayBuffer, SniffAudioExt} from "@/decrypt/utils.ts";
 
 const MetaFlac = require('metaflac-js');
 

src/decrypt/qmcMask.js

@@ -1,5 +1,4 @@
-import {FLAC_HEADER, OGG_HEADER} from "./util"
+import {BytesEquals, BytesHasPrefix, FLAC_HEADER, OGG_HEADER} from "@/decrypt/utils.ts";
-import {BytesEquals, BytesHasPrefix} from "@/decrypt/utils.ts";
 
 const QMOggPublicHeader1 = [
     0x4f, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,

src/decrypt/raw.js

@@ -1,7 +1,7 @@
-import {SniffAudioExt} from "@/decrypt/utils.ts";
+import {GetArrayBuffer, SniffAudioExt} from "@/decrypt/utils.ts";
 
 const musicMetadata = require("music-metadata-browser");
-import {AudioMimeType, GetArrayBuffer, GetMetaCoverURL, GetFileInfo} from "./util";
+import {AudioMimeType, GetMetaCoverURL, GetFileInfo} from "./util";
 
 export async function Decrypt(file, raw_filename, raw_ext, detect = true) {
     let ext = raw_ext;

src/decrypt/tm.js

@@ -1,11 +1,10 @@
 import {Decrypt as RawDecrypt} from "./raw";
-import {GetArrayBuffer} from "./util";
+import {GetArrayBuffer} from "@/decrypt/utils.ts";
 
 const TM_HEADER = [0x00, 0x00, 0x00, 0x20, 0x66, 0x74, 0x79, 0x70];
 
 export async function Decrypt(file, raw_filename) {
-    const fileBuffer = await GetArrayBuffer(file);
+    const audioData = new Uint8Array(await GetArrayBuffer(file));
-    const audioData = new Uint8Array(fileBuffer);
     for (let cur = 0; cur < 8; ++cur) {
         audioData[cur] = TM_HEADER[cur];
     }

src/decrypt/util.js

@@ -1,13 +1,5 @@
 const ID3Writer = require("browser-id3-writer");
-export const FLAC_HEADER = [0x66, 0x4C, 0x61, 0x43];
+
-export const MP3_HEADER = [0x49, 0x44, 0x33];
-export const OGG_HEADER = [0x4F, 0x67, 0x67, 0x53];
-export const M4A_HEADER = [0x66, 0x74, 0x79, 0x70];
-export const WMA_HEADER = [
-    0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11,
-    0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C,
-]
-export const WAV_HEADER = [0x52, 0x49, 0x46, 0x46]
 export const AudioMimeType = {
     mp3: "audio/mpeg",
     flac: "audio/flac",
@@ -18,16 +10,6 @@ export const AudioMimeType = {
 };
 export const IXAREA_API_ENDPOINT = "https://stats.ixarea.com/apis"
 
-// Also a new draft API: blob.arrayBuffer()
-export async function GetArrayBuffer(blobObject) {
-    return await new Promise(resolve => {
-        const reader = new FileReader();
-        reader.onload = (e) => {
-            resolve(e.target.result);
-        };
-        reader.readAsArrayBuffer(blobObject);
-    });
-}
 
 export function GetFileInfo(artist, title, filenameNoExt, separator = "-") {
     let newArtist = "", newTitle = "";
@@ -56,13 +38,6 @@ export function GetMetaCoverURL(metadata) {
     return pic_url;
 }
 
-export function IsBytesEqual(first, second) {
-    // if want wholly check, should length first>=second
-    return first.every((val, idx) => {
-        return val === second[idx];
-    })
-}
-
 
 export async function GetWebImage(pic_url) {
     try {

src/decrypt/utils.ts

@@ -34,3 +34,19 @@ export function SniffAudioExt(data: Uint8Array, fallback_ext: string = "mp3"): s
     if (BytesHasPrefix(data, AAC_HEADER)) return ".aac"
     return fallback_ext;
 }
+
+export function GetArrayBuffer(obj: Blob): Promise<ArrayBuffer> {
+    if (!!obj.arrayBuffer) return obj.arrayBuffer()
+    return new Promise((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = (e) => {
+            const rs = e.target?.result
+            if (!rs) {
+                reject("read file failed")
+            } else {
+                resolve(rs as ArrayBuffer)
+            }
+        };
+        reader.readAsArrayBuffer(obj);
+    });
+}

src/decrypt/xm.js

@@ -1,7 +1,7 @@
-import {AudioMimeType, GetArrayBuffer, GetFileInfo, GetMetaCoverURL} from "./util";
+import {AudioMimeType, GetFileInfo, GetMetaCoverURL} from "./util";
 
 import {Decrypt as RawDecrypt} from "./raw";
-import {BytesHasPrefix} from "@/decrypt/utils.ts";
+import {BytesHasPrefix, GetArrayBuffer} from "@/decrypt/utils.ts";
 
 const musicMetadata = require("music-metadata-browser");
 const MagicHeader = [0x69, 0x66, 0x6D, 0x74]