@jxstjh/jhvideo
Version:
HTML5 jhvideo base on MPEG2-TS Stream Player
261 lines • 13.1 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 };
}
};
import { EventEmitter } from 'events';
// 兼容性
var requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;
var bytesUint1G = Math.pow(1024, 3);
var storageSizeDefault = 2 * bytesUint1G;
var recordBasePath = 'jsp';
var FileStorage = /** @class */ (function () {
function FileStorage() {
this._fileEntry = null;
this._fileWriter = null;
this._stashBuffer = null;
this._stashUsed = 0;
this._bStarted = false; // 标记当前是否在录制状态，用于决定是否缓存塞入的数据，和判断是否结束录制
this._writedBytes = 0;
this._bWaitingNewData = false; // 上一轮写入结束后，_stashBuffer可能没有新的数据，标记等待新数据塞入后再进行写入
this._stashSize = 1920 * 1080 * 30 * 10 / 8; // 缓存大小，默认值是以30帧1080P大小计算的
this._transFlag = false;
this.emitter = new EventEmitter();
}
FileStorage.prototype.on = function (event, listener) {
this.emitter.addListener(event, listener);
};
FileStorage.prototype.off = function (event, listener) {
this.emitter.removeListener(event, listener);
};
FileStorage.queryUsageAndQuota = function () {
return new Promise(function (resolve) {
var queryUsageAndQuotaSucCB = function (usedBytes, grantedBytes) {
resolve({ usedBytes: usedBytes, grantedBytes: grantedBytes });
};
navigator.webkitTemporaryStorage.queryUsageAndQuota(queryUsageAndQuotaSucCB, errCallback);
});
};
/**
* @param {String} fileName
* @param {JSON} extra { head, fileFormat, writeHead, ignoreAudio } fileFormat: 2-ps, 5-pm4, 100-mp3
* @returns
*/
FileStorage.prototype.startRecord = function (fileName, extra) {
return __awaiter(this, void 0, void 0, function () {
var _this = this;
return __generator(this, function (_a) {
this._bStarted = true;
return [2 /*return*/, new Promise(function (resolve, reject) { return __awaiter(_this, void 0, void 0, function () {
var fs, getFileSucCb, createWriterSucCb, ext;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, Singleton.getFileSystem()];
case 1:
fs = _a.sent();
getFileSucCb = function (fileEntry) {
_this._fileEntry = fileEntry;
fileEntry.createWriter(createWriterSucCb, errCallback);
};
createWriterSucCb = function (fileWriter) {
_this._fileWriter = fileWriter;
fileWriter.onwriteend = _this._onWriteEnd.bind(_this);
// 检查缓存中是否有数据，无则标记等待，有则开始写入
if (_this._stashUsed === 0) {
_this._bWaitingNewData = true;
}
else {
_this._write();
}
resolve(true);
};
ext = extra.fileFormat === 100 ? 'mp3' : 'mp4';
fs.root.getFile("".concat(recordBasePath, "/").concat(fileName, ".").concat(ext), { create: true }, getFileSucCb, errCallback);
return [2 /*return*/];
}
});
}); })];
});
});
};
FileStorage.prototype.stopRecord = function () {
var _this = this;
return new Promise(function (resolve, reject) {
if (!_this._fileEntry || !_this._bStarted) {
return resolve(true);
}
_this.emitter.on('lastWriteEnd', function () {
downloadFile(_this._fileEntry.toURL(), _this._fileEntry.name);
resolve(true);
});
// 有时候在等新数据写入的间隙，无法触发lastWriteEnd
if (_this._bWaitingNewData && !_this._bWaitMp4Index) {
// Log.D('lastWriteEnd')
_this.emitter.emit('lastWriteEnd');
}
});
};
FileStorage.prototype.inputData = function (chunk) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (!this._bStarted)
return [2 /*return*/];
if (!this._transFlag) {
this._stash(chunk);
}
return [2 /*return*/];
});
});
};
FileStorage.prototype._write = function () {
if (!this._stashBuffer)
return;
var stashData = this._stashBuffer.slice(0, this._stashUsed);
var used = this._fileWriter.length;
// 判断fileSystem空间是否足够写入本次数据
// let { usedBytes, grantedBytes } = await queryUsageAndQuota(),
// spareBytes = grantedBytes - usedBytes
// Log.D('write', used, stashData, spareBytes)
this._fileWriter.seek(used);
this._fileWriter.write(new Blob([stashData]));
this._writedBytes += stashData.byteLength;
this._stashUsed = 0;
};
FileStorage.prototype._onWriteEnd = function (evt) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (this._stashUsed > 0) {
// 从缓存中拿数据写入文件
this._write();
}
else if (this._stashUsed === 0 && this._bStarted) {
// 等待缓存中有新数据塞入
this._bWaitingNewData = true;
}
else if (this._stashUsed === 0 && this._bWaitMp4Index) {
// mp4录制，已结束，但是未收到mp4索引
this._bWaitingNewData = true;
}
else {
// 结束，保存文件
// Log.D('lastWriteEnd')
// this.eventsCenter.emit('lastWriteEnd')
}
return [2 /*return*/];
});
});
};
FileStorage.prototype._stash = function (chunk) {
if (!this._stashBuffer) {
this._stashBuffer = new ArrayBuffer(this._stashSize);
}
var stashArr = new Uint8Array(this._stashBuffer, 0, this._stashSize);
stashArr.set(new Uint8Array(chunk, 0), this._stashUsed);
this._stashUsed += chunk.byteLength;
// 检查是否在等新数据塞入
if (this._bWaitingNewData) {
this._bWaitingNewData = false;
this._write();
}
};
FileStorage.prototype.destroy = function () {
this.emitter.removeAllListeners();
this.emitter = null;
};
return FileStorage;
}());
export default FileStorage;
// 文件系统-单例
var Singleton = (function () {
var fileSystem, dirEntry;
return {
getFileSystem: function () {
var _this = this;
return new Promise(function (resolve, reject) { return __awaiter(_this, void 0, void 0, function () {
var _a, usedBytes, grantedBytes, spareBytes, requestFileSystemSucCB, getDirectorySucCB;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (fileSystem)
return [2 /*return*/, resolve(fileSystem)];
return [4 /*yield*/, FileStorage.queryUsageAndQuota()];
case 1:
_a = _b.sent(), usedBytes = _a.usedBytes, grantedBytes = _a.grantedBytes, spareBytes = grantedBytes - usedBytes;
if (spareBytes < storageSizeDefault) {
return [2 /*return*/, reject()];
}
requestFileSystemSucCB = function (fs) {
// 创建目录，用于清理缓存
fs.root.getDirectory(recordBasePath, { create: true }, getDirectorySucCB, errCallback);
fileSystem = fs;
};
getDirectorySucCB = function (de) {
dirEntry = de;
// 清理之前的录像
de.createReader()
.readEntries(function (entries) {
if (entries.length === 0) {
// return Log.D('Directory /jsp clean.')
}
// Log.D('Remain fileEntries', entries)
entries.forEach(function (entry) {
entry.remove(function () {
// Log.D(entry.name, 'removed.')
});
});
});
// Log.D('FileSystem "jsp" directory created', fileSystem, dirEntry)
resolve(fileSystem);
};
requestFileSystem(Window.TEMPORARY, storageSizeDefault, requestFileSystemSucCB, errCallback);
return [2 /*return*/];
}
});
}); });
}
};
})();
function errCallback(err) {
console.log(err);
}
function downloadFile(href, fileName) {
var mouseEvt = document.createEvent('MouseEvents');
mouseEvt.initEvent('click', false, false);
var aEl = document.createElement('a');
aEl.href = href;
aEl.download = fileName;
aEl.dispatchEvent(mouseEvt);
}
//# sourceMappingURL=index.js.map