web/src/decrypt/raw.ts

28 lines
964 B
TypeScript
Raw Normal View History

import {AudioMimeType, GetArrayBuffer, GetCoverFromFile, GetMetaFromFile, SniffAudioExt} from "@/decrypt/utils.ts";
import {DecryptResult} from "@/decrypt/entity";
2020-01-21 11:03:41 +00:00
2021-05-23 14:29:34 +00:00
import {parseBlob as metaParseBlob} from "music-metadata-browser";
export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string, detect: boolean = true)
: Promise<DecryptResult> {
2020-02-11 07:51:07 +00:00
let ext = raw_ext;
if (detect) {
const buffer = new Uint8Array(await GetArrayBuffer(file));
ext = SniffAudioExt(buffer, raw_ext);
2020-02-11 07:51:07 +00:00
if (ext !== raw_ext) file = new Blob([buffer], {type: AudioMimeType[ext]})
}
2021-05-23 14:29:34 +00:00
const tag = await metaParseBlob(file);
const {title, artist} = GetMetaFromFile(raw_filename, tag.common.title, tag.common.artist)
2020-01-21 11:03:41 +00:00
return {
title,
artist,
ext,
2020-01-21 11:03:41 +00:00
album: tag.common.album,
picture: GetCoverFromFile(tag),
2020-02-06 08:18:40 +00:00
file: URL.createObjectURL(file),
2020-02-11 07:51:07 +00:00
mime: AudioMimeType[ext]
2020-01-21 11:03:41 +00:00
}
}