jamp3
Version:
mp3, id3v1, id3v2 - reader & writer
47 lines • 2.2 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.FramePopularimeter = void 0;
const encodings_1 = require("../../../common/encodings");
const utils_1 = require("../../../common/utils");
exports.FramePopularimeter = {
parse: (reader) => __awaiter(void 0, void 0, void 0, function* () {
const email = reader.readStringTerminated(encodings_1.ascii);
const rating = reader.readByte();
let count = 0;
if (reader.hasData()) {
try {
count = reader.readUInt(reader.unread());
}
catch (e) {
count = 0;
}
}
const value = { count, rating, email };
return { value, encoding: encodings_1.ascii };
}),
write: (frame, stream) => __awaiter(void 0, void 0, void 0, function* () {
const value = frame.value;
yield stream.writeStringTerminated(value.email, encodings_1.ascii);
yield stream.writeByte(value.rating);
if (value.count > 0) {
const byteLength = (0, utils_1.neededStoreBytes)(value.count, 4);
yield stream.writeUInt(value.count, byteLength);
}
}),
simplify: (value) => {
if (value && value.email !== undefined) {
return value.email + (value.count !== undefined ? ';count=' + value.count : '') + (value.rating !== undefined ? ';rating=' + value.rating : '');
}
return null;
}
};
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