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get_data.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>BeatSaver Recognization</title>
<script src="https://gildas-lormeau.github.io/zip.js/demos/lib/zip.min.js"></script>
</head>
<body>
<a href="https://chrome.google.com/webstore/detail/allow-cors-access-control/lhobafahddgcelffkeicbaginigeejlf/related?hl=en">安装跨域插件</a>
<div id="results_dom"></div>
<script src="sandbox.bundle.js"></script>
<script>
function similar(s, t, f) { if (!s || !t) { return 0 } var l = s.length > t.length ? s.length : t.length
var n = s.length
var m = t.length
var d = []
f = f || 3
var min = function (a, b, c) { return a < b ? (a < c ? a : c) : (b < c ? b : c) }
var i, j, si, tj, cost
if (n === 0) return m
if (m === 0) return n
for (i = 0; i <= n; i++) { d[i] = []
d[i][0] = i } for (j = 0; j <= m; j++) { d[0][j] = j } for (i = 1; i <= n; i++) { si = s.charAt(i - 1)
for (j = 1; j <= m; j++) { tj = t.charAt(j - 1)
if (si === tj) { cost = 0 } else { cost = 1 } d[i][j] = min(d[i - 1][j] + 1, d[i][j - 1] + 1, d[i - 1][j - 1] + cost) } } let res = (1 - d[n][m] / l); return res }
let results = localStorage["results"] || "[]"
results = JSON.parse(results)
updateResults()
function updateResults() {
console.log(results.reduce((p, c) => p + (c.match.result ? 1 : 0), 0), results.length)
results_dom.innerHTML = `目前匹配成功率：${(results.reduce((p, c) => p + (c.match.result ? 1 : 0), 0) / results.length * 100).toFixed(3)}%<br>结果：\n${results.map(v => {
if (v.match.result == null) return `<div class='song'><span class="name">${v.saver.name}</span><span class="result"><bold>匹配失败。</bold></span></div>`
return `<div class='song'><span class="name">${v.saver.name}</span><span class="result"><bold>匹配成功:${v.match.result[0].song.name}</bold></span></div>`
}).join("")}`;
localStorage["results"] = JSON.stringify(results)
}
// throw Error("stopppp")
function toNCMBuffer(audiodata, from, len) {
let now = 0;
let json = {}
let buf = audiodata.getChannelData(1)
while (now < len * 8e3) {
json[now] = buf[now * audiodata.sampleRate / 8e3 + from * audiodata.sampleRate];
now += 1;
}
return json;
}
async function getMatches(rawdata, length) {
var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/x-www-form-urlencoded");
// myHeaders.append("Cookie", "NMTID=00OX5XnP2Lye8FNsU-Kv9N8jeXqYWAAAAGBh-ODmw");
var urlencoded = new URLSearchParams();
urlencoded.append("duration", length);
urlencoded.append("times", "2");
urlencoded.append("decrypt", "1");
urlencoded.append("rawdata", rawdata);
urlencoded.append("algorithmCode", "shazam_v2");
urlencoded.append("sessionId", "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");
var requestOptions = {
method: 'POST',
headers: myHeaders,
body: urlencoded,
redirect: 'follow'
};
return await (await fetch("https://interface.music.163.com/api/music/audio/match", requestOptions)).json()
}
function timeout(ms) {
return new Promise((rs) => {
setTimeout(() => { rs() }, ms);
})
}
localStorage["lastPage"] ||= "1";
!(async function () {
while (1) {
let songs = await (await fetch(`https://beatsaver.com/api/search/text/${localStorage["lastPage"]}?sortOrder=Latest`)).json()
for (let song of songs.docs) {
let { previewURL, downloadURL } = song.versions[0];
let buffer = await (await fetch(previewURL)).arrayBuffer()
let mapBlob = await (await fetch(downloadURL)).blob()
let reader = new zip.BlobReader(mapBlob)
let rzip = new zip.ZipReader(reader)
let infodat = (await rzip.getEntries()).filter(v => v.filename.toLowerCase() == "info.dat")[0]
let info = JSON.parse(await infodat.getData(new zip.TextWriter()));
let songfile = (await rzip.getEntries()).filter(v => v.filename.endsWith(info._songFilename.split(".").pop()))[0]
let songdata = await songfile.getData(new zip.BlobWriter());
const audioCtx = new AudioContext();
let data = await audioCtx.decodeAudioData(await songdata.arrayBuffer())
let secs = 4
let matches = { data: {} };
let now_opt = 0, similarity = -1;
while ((secs + 20) < data.duration && similarity <0.6) {
let _matches = await getMatches(NeteaseRecordArrayToBase64(toNCMBuffer(data, secs, 6)), 6)
console.log("attempt " + secs)
if (_matches.data.result) {
matches=_matches
let namea=matches.data.result[0].song.name,nameb=info._songName
namea=namea.toLowerCase().replace(/[\[,（,\(].*?[\),）,\]]/g,"").replace(/\s/g,"");
nameb=nameb.toLowerCase().replace(/[\[,（,\(].*?[\),）,\]]/g,"").replace(/\s/g,"");
similarity = similar(namea,nameb);
if(namea.includes(nameb)||nameb.includes(namea))similarity=1;
console.log(`Name similarity ${similarity} ["${namea}","${nameb}"]`)
}
secs += 30
await timeout(1000)
}
results.push({
saver: song,
match: matches.data
})
updateResults()
}
localStorage["lastPage"] = parseInt(localStorage["lastPage"]) + 1
}
})()
</script>
</body>
</html>