const buffer = uni.base64ToArrayBuffer(contentBase64);
// var defArrayData = new Uint8Array(buffer);
// console.log(defArrayData);
//skip跳过4位
var slice = buffer.slice(4);
var zip_byte = new Uint8Array(slice);
//{'@', 'G', 'a', 'w', '^', '2', 't', 'G','Q', '6', '1', '-', 'Î', 'Ò', 'n', 'i'}
var key = [64, 71, 97, 119, 94, 50, 116, 71, 81, 54, 49, 45, 206, 210, 110, 105];
// console.log(zip_byte);
var j = zip_byte.length;
for (var k = 0; k < j; k++) {
var l = k % 16;
var tmp67_65 = k;
var tmp67_64 = zip_byte;
tmp67_64[tmp67_65] = tmp67_64[tmp67_65] ^ key[l];
}
//console.log(zip_byte);
var lrcContent = pako.ungzip(zip_byte, { to: 'string' }); //解压成字符串
// console.log(lrcContent);