rx-player
Version:
Canal+ HTML5 Video Player
153 lines (152 loc) • 5.77 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 { CustomLoaderError } from "../../errors";
import createCancellablePromise from "../../utils/create_cancellable_promise";
import isNullOrUndefined from "../../utils/is_null_or_undefined";
/**
* @param {Function} customSegmentLoader
* @param {Object} cancelSignal
* @returns {Promise}
*/
function loadInitSegment(customSegmentLoader, cancelSignal) {
return createCancellablePromise(cancelSignal, (res, rej) => {
/** `true` when the custom segmentLoader should not be active anymore. */
let hasFinished = false;
/**
* Callback triggered when the custom segment loader has a response.
* @param {Object} _args
*/
const resolve = (_args) => {
if (hasFinished || cancelSignal.isCancelled()) {
return;
}
hasFinished = true;
res({
resultType: "segment-loaded",
resultData: {
responseData: _args.data,
size: _args.size,
requestDuration: _args.duration,
},
});
};
/**
* Callback triggered when the custom segment loader fails
* @param {*} err - The corresponding error encountered
*/
const reject = (err) => {
if (hasFinished || cancelSignal.isCancelled()) {
return;
}
hasFinished = true;
rej(err);
};
const abort = customSegmentLoader({ resolve, reject });
/** The logic to run when this loader is cancelled while pending. */
return () => {
if (hasFinished) {
return;
}
hasFinished = true;
if (typeof abort === "function") {
abort();
}
};
});
}
/**
* @param {Object} segment
* @param {Function} customSegmentLoader
* @param {Object} cancelSignal
* @returns {Promise.<Object>}
*/
function loadSegment(segment, customSegmentLoader, cancelSignal) {
return createCancellablePromise(cancelSignal, (res, rej) => {
/** `true` when the custom segmentLoader should not be active anymore. */
let hasFinished = false;
/**
* Callback triggered when the custom segment loader has a response.
* @param {Object} _args
*/
const resolve = (_args) => {
if (hasFinished || cancelSignal.isCancelled()) {
return;
}
hasFinished = true;
res({
resultType: "segment-loaded",
resultData: {
responseData: _args.data,
size: _args.size,
requestDuration: _args.duration,
},
});
};
/**
* Callback triggered when the custom segment loader fails
* @param {*} err - The corresponding error encountered
*/
const reject = (err) => {
var _a, _b;
if (hasFinished || cancelSignal.isCancelled()) {
return;
}
hasFinished = true;
// Format error and send it
const castedErr = err;
const message = (_a = castedErr === null || castedErr === void 0 ? void 0 : castedErr.message) !== null && _a !== void 0 ? _a : "Unknown error when fetching a local segment through a " +
"custom segmentLoader.";
const emittedErr = new CustomLoaderError(message, (_b = castedErr === null || castedErr === void 0 ? void 0 : castedErr.canRetry) !== null && _b !== void 0 ? _b : false, castedErr === null || castedErr === void 0 ? void 0 : castedErr.xhr);
rej(emittedErr);
};
const abort = customSegmentLoader(segment, { resolve, reject });
/** The logic to run when this loader is cancelled while pending. */
return () => {
if (hasFinished) {
return;
}
hasFinished = true;
if (typeof abort === "function") {
abort();
}
};
});
}
/**
* Generic segment loader for the local Manifest.
* @param {string | null} _wantedCdn
* @param {Object} content
* @param {Object} cancelSignal
* @param {Object} _callbacks
* @returns {Promise}
*/
export default function segmentLoader(_wantedCdn, content, _loaderOptions, // TODO use timeout?
cancelSignal, _callbacks) {
const { segment } = content;
const privateInfos = segment.privateInfos;
if (segment.isInit) {
if (privateInfos === undefined ||
isNullOrUndefined(privateInfos.localManifestInitSegment)) {
throw new Error("Segment is not a local Manifest segment");
}
return loadInitSegment(privateInfos.localManifestInitSegment.load, cancelSignal);
}
if (privateInfos === undefined ||
isNullOrUndefined(privateInfos.localManifestSegment)) {
throw new Error("Segment is not an local Manifest segment");
}
return loadSegment(privateInfos.localManifestSegment.segment, privateInfos.localManifestSegment.load, cancelSignal);
}