videotype
Version:
Get video size, duration and type from url or File
143 lines (142 loc) • 6.62 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());
});
};
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 };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
function getTypeFromBinaryData(binaryData) {
if (binaryData[4] === 0x66 &&
binaryData[5] === 0x74 &&
binaryData[6] === 0x79 &&
binaryData[7] === 0x70) {
return "mp4";
}
else if (binaryData[0] === 0x46 &&
binaryData[1] === 0x4c &&
binaryData[2] === 0x56) {
return "flv";
}
else if (binaryData[0] === 0x23 &&
binaryData[1] === 0x48 &&
binaryData[2] === 0x54 &&
binaryData[3] === 0x54) {
return "m3u8";
}
else if (binaryData[0] === 0x44 &&
binaryData[1] === 0x44 &&
binaryData[2] === 0x53 &&
binaryData[3] === 0x4d) {
return "dash";
}
}
function getVideoType(video) {
return __awaiter(this, void 0, void 0, function () {
var arrayBuffer, binaryData;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(typeof video === "string")) return [3 /*break*/, 1];
return [2 /*return*/, fetch(video)
.then(function (res) { return __awaiter(_this, void 0, void 0, function () {
var arrayBuffer, binaryData;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, res.arrayBuffer()];
case 1:
arrayBuffer = _a.sent();
binaryData = new Uint8Array(arrayBuffer);
return [2 /*return*/, getTypeFromBinaryData(binaryData)];
}
});
}); })
.catch(function () {
return undefined;
})];
case 1: return [4 /*yield*/, video.arrayBuffer()];
case 2:
arrayBuffer = _a.sent();
binaryData = new Uint8Array(arrayBuffer);
return [2 /*return*/, getTypeFromBinaryData(binaryData)];
}
});
});
}
function getVideoDuration(video) {
return __awaiter(this, void 0, void 0, function () {
var el;
return __generator(this, function (_a) {
el = document.createElement("video");
el.src = typeof video === "string" ? video : URL.createObjectURL(video);
return [2 /*return*/, new Promise(function (resolve, reject) {
el.addEventListener("loadedmetadata", function () {
if (el.duration === Infinity) {
el.currentTime = Number.MAX_SAFE_INTEGER;
el.ontimeupdate = function () {
el.ontimeupdate = null;
resolve(el.duration);
el.currentTime = 0;
};
}
else
resolve(el.duration);
});
el.onerror = function (event) {
reject(event);
};
})];
});
});
}
function getVideoSize(video) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (typeof video === "string") {
return [2 /*return*/, fetch(video, { method: "HEAD" }).then(function (res) {
return parseInt(res.headers.get("Content-Length") || "0");
})];
}
else {
return [2 /*return*/, video.size];
}
return [2 /*return*/];
});
});
}
exports.default = {
getVideoType: getVideoType,
getVideoDuration: getVideoDuration,
getVideoSize: getVideoSize,
};