rx-player
Version:
Canal+ HTML5 Video Player
78 lines (77 loc) • 2.77 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 { extractCompleteChunks } from "../../parsers/containers/isobmff";
import { concat } from "../../utils/byte_parsing";
import fetchRequest from "../../utils/request/fetch";
/**
* Load segments through a "chunk" mode (decodable chunk by decodable chunk).
*
* This method is particularly adapted to low-latency streams.
*
* @param {string} url - URL of the segment to download.
* @param {Object} requestOptions
* @param {Object|undefined} requestOptions.headers - Headers for the
* low-latency request
* @param {number|undefined} requestOptions.timeout - Request timeout for the
* low-latency request.
* @param {number|undefined} requestOptions.connectionTimeout - HTTP connection
* timeout for the low-latency request.
* @param {Object} callbacks
* @param {CancellationSignal} cancelSignal
* @returns {Promise}
*/
export default async function loadChunkedSegmentData(url, requestOptions, callbacks, cancelSignal) {
let partialChunk = null;
/**
* Called each time `fetch` has new data available.
* @param {Object} info
*/
function onData(info) {
const chunk = new Uint8Array(info.chunk);
const concatenated = partialChunk !== null ? concat(partialChunk, chunk) : chunk;
const res = extractCompleteChunks(concatenated);
const completeChunks = res[0];
partialChunk = res[1];
if (completeChunks !== null) {
completeChunks.forEach((completedChunk) => {
callbacks.onNewChunk(completedChunk);
});
if (cancelSignal.isCancelled()) {
return;
}
}
callbacks.onProgress({
duration: info.duration,
size: info.size,
totalSize: info.totalSize,
});
if (cancelSignal.isCancelled()) {
return;
}
}
const res = await fetchRequest({
url,
headers: requestOptions.headers,
onData,
timeout: requestOptions.timeout,
connectionTimeout: requestOptions.connectionTimeout,
cancelSignal,
});
return {
resultType: "chunk-complete",
resultData: res,
};
}