rx-player
Version:
Canal+ HTML5 Video Player
177 lines (176 loc) • 6.78 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.
*/
import parseBaseURL from "./BaseURL";
import parseContentProtection from "./ContentProtection";
import { createPeriodIntermediateRepresentation } from "./Period";
import { parseDateTime, parseDuration, parseScheme, ValueParser } from "./utils";
/**
* Parse children of the MPD's root into a simple object.
* @param {NodeList} mpdChildren
* @returns {Array.<Object>}
*/
function parseMPDChildren(mpdChildren) {
const baseURLs = [];
const locations = [];
const periods = [];
const utcTimings = [];
const contentProtections = [];
let warnings = [];
for (let i = 0; i < mpdChildren.length; i++) {
if (mpdChildren[i].nodeType === Node.ELEMENT_NODE) {
const currentNode = mpdChildren[i];
switch (currentNode.nodeName) {
case "BaseURL": {
const [baseURLObj, baseURLWarnings] = parseBaseURL(currentNode);
if (baseURLObj !== undefined) {
baseURLs.push(baseURLObj);
}
warnings = warnings.concat(baseURLWarnings);
break;
}
case "Location":
locations.push(currentNode.textContent === null ? "" : currentNode.textContent);
break;
case "Period": {
const [period, periodWarnings] = createPeriodIntermediateRepresentation(currentNode);
periods.push(period);
warnings = warnings.concat(periodWarnings);
break;
}
case "UTCTiming": {
const utcTiming = parseScheme(currentNode);
utcTimings.push(utcTiming);
break;
}
case "ContentProtection": {
const [contentProtection, contentProtectionWarnings] = parseContentProtection(currentNode);
if (contentProtectionWarnings.length > 0) {
warnings = warnings.concat(contentProtectionWarnings);
}
if (contentProtection !== undefined) {
contentProtections.push(contentProtection);
}
break;
}
}
}
}
return [{ baseURLs, locations, periods, utcTimings, contentProtections }, warnings];
}
/**
* @param {Element} root
* @returns {Array.<Object>}
*/
function parseMPDAttributes(root) {
const res = {};
const warnings = [];
const parseValue = ValueParser(res, warnings);
for (let i = 0; i < root.attributes.length; i++) {
const attribute = root.attributes[i];
switch (attribute.name) {
case "id":
res.id = attribute.value;
break;
case "profiles":
res.profiles = attribute.value;
break;
case "type":
res.type = attribute.value;
break;
case "availabilityStartTime":
parseValue(attribute.value, {
asKey: "availabilityStartTime",
parser: parseDateTime,
dashName: "availabilityStartTime",
});
break;
case "availabilityEndTime":
parseValue(attribute.value, {
asKey: "availabilityEndTime",
parser: parseDateTime,
dashName: "availabilityEndTime",
});
break;
case "publishTime":
parseValue(attribute.value, {
asKey: "publishTime",
parser: parseDateTime,
dashName: "publishTime",
});
break;
case "mediaPresentationDuration":
parseValue(attribute.value, {
asKey: "duration",
parser: parseDuration,
dashName: "mediaPresentationDuration",
});
break;
case "minimumUpdatePeriod":
parseValue(attribute.value, {
asKey: "minimumUpdatePeriod",
parser: parseDuration,
dashName: "minimumUpdatePeriod",
});
break;
case "minBufferTime":
parseValue(attribute.value, {
asKey: "minBufferTime",
parser: parseDuration,
dashName: "minBufferTime",
});
break;
case "timeShiftBufferDepth":
parseValue(attribute.value, {
asKey: "timeShiftBufferDepth",
parser: parseDuration,
dashName: "timeShiftBufferDepth",
});
break;
case "suggestedPresentationDelay":
parseValue(attribute.value, {
asKey: "suggestedPresentationDelay",
parser: parseDuration,
dashName: "suggestedPresentationDelay",
});
break;
case "maxSegmentDuration":
parseValue(attribute.value, {
asKey: "maxSegmentDuration",
parser: parseDuration,
dashName: "maxSegmentDuration",
});
break;
case "maxSubsegmentDuration":
parseValue(attribute.value, {
asKey: "maxSubsegmentDuration",
parser: parseDuration,
dashName: "maxSubsegmentDuration",
});
break;
}
}
return [res, warnings];
}
/**
* @param {Element} root
* @returns {Array.<Object>}
*/
export function createMPDIntermediateRepresentation(root) {
const [children, childrenWarnings] = parseMPDChildren(root.childNodes);
const [attributes, attrsWarnings] = parseMPDAttributes(root);
const warnings = childrenWarnings.concat(attrsWarnings);
return [{ children, attributes }, warnings];
}