mediainfo-node
Version:
nodeJS mediainfo port
169 lines (168 loc) • 7.97 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
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());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
exports.__esModule = true;
exports.MediaInfo = exports.MediaInfoError = void 0;
var MediaInfoLib = require("../lib/MediaInfoWasm");
var got_1 = require("got");
var MediaInfoError = /** @class */ (function (_super) {
__extends(MediaInfoError, _super);
function MediaInfoError(message, higherOrderError) {
var _newTarget = this.constructor;
var _this = _super.call(this, message) || this;
_this.message = message;
_this.higherOrderError = higherOrderError;
Object.setPrototypeOf(_this, _newTarget.prototype);
return _this;
}
return MediaInfoError;
}(Error));
exports.MediaInfoError = MediaInfoError;
var MediaInfo = /** @class */ (function () {
function MediaInfo() {
}
MediaInfo.prototype.instantiateLib = function () {
return __awaiter(this, void 0, void 0, function () {
var _a, e_1;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
_b.trys.push([0, 2, , 3]);
_a = this;
return [4 /*yield*/, MediaInfoLib({})];
case 1:
_a.lib = _b.sent();
return [3 /*break*/, 3];
case 2:
e_1 = _b.sent();
throw new MediaInfoError('Failed to instantiate MediaInfoLib', e_1);
case 3: return [2 /*return*/];
}
});
});
};
MediaInfo.prototype.getInfo = function (input) {
return __awaiter(this, void 0, void 0, function () {
var e_2;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!!this.lib) return [3 /*break*/, 2];
return [4 /*yield*/, this.instantiateLib()];
case 1:
_a.sent();
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 5]);
return [4 /*yield*/, new Promise(function (resolve, reject) {
var normalizedInput = MediaInfo.normalizeInput(input);
var stream = MediaInfo.getDataStream(normalizedInput, reject);
resolve(_this.getMediaInfoData(stream));
})];
case 3: return [2 /*return*/, _a.sent()];
case 4:
e_2 = _a.sent();
throw new MediaInfoError('Failed to read media data', e_2);
case 5: return [2 /*return*/];
}
});
});
};
MediaInfo.normalizeInput = function (input) {
var normalizedInput;
if (input instanceof URL) {
normalizedInput = input.toString();
}
else {
normalizedInput = input;
}
return normalizedInput;
};
MediaInfo.getDataStream = function (input, errorHandler) {
var stream;
if (input.toLowerCase().startsWith('http')) {
stream = got_1["default"].stream(input);
}
else {
throw new Error('Input other than HTTP is not supported yet');
}
stream.on('error', errorHandler);
return stream;
};
MediaInfo.prototype.getMediaInfoData = function (stream) {
var _this = this;
return new Promise(function (resolve) { return __awaiter(_this, void 0, void 0, function () {
var mediaInfoInstance, seekTo;
return __generator(this, function (_a) {
mediaInfoInstance = new this.lib.MediaInfo();
mediaInfoInstance.Open_Buffer_Init(-1, 0);
stream.on('data', function (chunk) {
mediaInfoInstance.Open_Buffer_Continue(chunk);
seekTo = mediaInfoInstance.Open_Buffer_Continue_Goto_Get();
});
stream.on('end', function () {
mediaInfoInstance.Open_Buffer_Finalize();
mediaInfoInstance.Option('Output', 'JSON');
mediaInfoInstance.Option('Complete');
var output = JSON.parse(mediaInfoInstance.Inform());
mediaInfoInstance.Close();
mediaInfoInstance["delete"]();
resolve(output);
});
return [2 /*return*/];
});
}); });
};
return MediaInfo;
}());
exports.MediaInfo = MediaInfo;