rx-player
Version:
Canal+ HTML5 Video Player
94 lines (93 loc) • 3.42 kB
JavaScript
;
/**
* Copyright 2015 CANAL+ Group
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createBox = createBox;
exports.createBoxWithChildren = createBoxWithChildren;
var byte_parsing_1 = require("../../../utils/byte_parsing");
var string_parsing_1 = require("../../../utils/string_parsing");
var constants_1 = require("./constants");
/**
* Speed up string to bytes conversion by memorizing the result
*
* The keys here are ISOBMFF box names. The values are the corresponding
* bytes conversion for putting as an ISOBMFF boxes.
*
* Used by the boxName method.
* @type {Object}
*/
var boxNamesMem = {};
/**
* Convert the string name of an ISOBMFF box into the corresponding bytes.
* Has a memorization mechanism to speed-up if you want to translate the
* same string multiple times.
* @param {string} str
* @returns {Uint8Array}
*/
function boxName(str) {
if (boxNamesMem[str] !== undefined) {
return boxNamesMem[str];
}
var nameInBytes = (0, string_parsing_1.strToUtf8)(str);
boxNamesMem[str] = nameInBytes;
return nameInBytes;
}
/**
* Create a new ISOBMFF "box" with the given name.
* @param {string} name - name of the box you want to create, must always
* be 4 characters (uuid boxes not supported)
* @param {Uint8Array} buff - content of the box
* @returns {Uint8Array} - The entire ISOBMFF box (length+name+content)
*/
function createBox(name, buff) {
var len = buff.length + 8;
return len <= constants_1.MAX_32_BIT_INT
? (0, byte_parsing_1.concat)((0, byte_parsing_1.itobe4)(len), boxName(name), buff)
: (0, byte_parsing_1.concat)((0, byte_parsing_1.itobe4)(1), boxName(name), (0, byte_parsing_1.itobe8)(len + 8), buff);
}
/**
* @param {string} name
* @param {Array.<Uint8Array>} children
* @returns {Uint8Array}
*/
function createBoxWithChildren(name, children) {
return createBox(name, byte_parsing_1.concat.apply(void 0, __spreadArray([], __read(children), false)));
}