rx-player
Version:
Canal+ HTML5 Video Player
117 lines (116 loc) • 4.79 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.generateEventStreamChildrenParser = generateEventStreamChildrenParser;
exports.generateEventStreamAttrParser = generateEventStreamAttrParser;
var noop_1 = require("../../../../../../utils/noop");
var utils_1 = require("../utils");
/**
* Generate a "children parser" once inside a `EventStream` node.
* @param {Object} childrenObj
* @param {WebAssembly.Memory} linearMemory
* @param {ParsersStack} parsersStack
* @param {ArrayBuffer} fullMpd
* @returns {Function}
*/
function generateEventStreamChildrenParser(childrenObj, linearMemory, parsersStack, fullMpd) {
return function onRootChildren(nodeId) {
switch (nodeId) {
case 6 /* TagName.EventStreamElt */: {
var event_1 = {};
childrenObj.events.push(event_1);
var attrParser = generateEventAttrParser(event_1, linearMemory, fullMpd);
parsersStack.pushParsers(nodeId, noop_1.default, attrParser);
break;
}
default:
// Allows to make sure we're not mistakenly closing a re-opened
// tag.
parsersStack.pushParsers(nodeId, noop_1.default, noop_1.default);
break;
}
};
}
/**
* @param {Object} esAttrs
* @param {WebAssembly.Memory} linearMemory
* @returns {Function}
*/
function generateEventStreamAttrParser(esAttrs, linearMemory) {
var textDecoder = new TextDecoder();
return function onEventStreamAttribute(attr, ptr, len) {
var dataView = new DataView(linearMemory.buffer);
switch (attr) {
case 16 /* AttributeName.SchemeIdUri */:
esAttrs.schemeIdUri = (0, utils_1.parseString)(textDecoder, linearMemory.buffer, ptr, len);
break;
case 17 /* AttributeName.SchemeValue */:
esAttrs.value = (0, utils_1.parseString)(textDecoder, linearMemory.buffer, ptr, len);
break;
case 27 /* AttributeName.TimeScale */:
esAttrs.timescale = dataView.getFloat64(ptr, true);
break;
case 70 /* AttributeName.Namespace */: {
var xmlNs = { key: "", value: "" };
var offset = ptr;
var keySize = dataView.getUint32(offset);
offset += 4;
xmlNs.key = (0, utils_1.parseString)(textDecoder, linearMemory.buffer, offset, keySize);
offset += keySize;
var valSize = dataView.getUint32(offset);
offset += 4;
xmlNs.value = (0, utils_1.parseString)(textDecoder, linearMemory.buffer, offset, valSize);
if (esAttrs.namespaces === undefined) {
esAttrs.namespaces = [xmlNs];
}
else {
esAttrs.namespaces.push(xmlNs);
}
break;
}
}
};
}
/**
* @param {Object} eventAttr
* @param {WebAssembly.Memory} linearMemory
* @param {ArrayBuffer} fullMpd
* @returns {Function}
*/
function generateEventAttrParser(eventAttr, linearMemory, fullMpd) {
var textDecoder = new TextDecoder();
return function onEventStreamAttribute(attr, ptr, len) {
var dataView = new DataView(linearMemory.buffer);
switch (attr) {
case 25 /* AttributeName.EventPresentationTime */:
eventAttr.presentationTime = dataView.getFloat64(ptr, true);
break;
case 1 /* AttributeName.Duration */:
eventAttr.duration = dataView.getFloat64(ptr, true);
break;
case 0 /* AttributeName.Id */:
eventAttr.id = (0, utils_1.parseString)(textDecoder, linearMemory.buffer, ptr, len);
break;
case 69 /* AttributeName.EventStreamEltRange */: {
var rangeStart = dataView.getFloat64(ptr, true);
var rangeEnd = dataView.getFloat64(ptr + 8, true);
eventAttr.eventStreamData = fullMpd.slice(rangeStart, rangeEnd);
break;
}
}
};
}