rx-player
Version:
Canal+ HTML5 Video Player
64 lines (63 loc) • 2.99 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 config from "../../../../config";
import objectAssign from "../../../../utils/object_assign";
import appendSegmentToBuffer from "./append_segment_to_buffer";
/**
* Push a given media segment (non-init segment) to a SegmentSink.
* @param {Object} args
* @param {Object} cancelSignal
* @returns {Promise}
*/
export default async function pushMediaSegment({ playbackObserver, bufferGoal, content, initSegmentUniqueId, parsedSegment, segment, segmentSink, }, cancelSignal) {
var _a, _b;
if (parsedSegment.chunkData === null) {
return null;
}
const { chunkData, chunkInfos, chunkOffset, chunkSize, appendWindow } = parsedSegment;
const codec = content.representation.getMimeTypeString();
const { APPEND_WINDOW_SECURITIES } = config.getCurrent();
// Cutting exactly at the start or end of the appendWindow can lead to
// cases of infinite rebuffering due to how browser handle such windows.
// To work-around that, we add a small offset before and after those.
const safeAppendWindow = [
appendWindow[0] !== undefined
? Math.max(0, appendWindow[0] - APPEND_WINDOW_SECURITIES.START)
: undefined,
appendWindow[1] !== undefined
? appendWindow[1] + APPEND_WINDOW_SECURITIES.END
: undefined,
];
const data = {
initSegmentUniqueId,
chunk: chunkData,
timestampOffset: chunkOffset,
appendWindow: safeAppendWindow,
codec,
};
let estimatedStart = (_a = chunkInfos === null || chunkInfos === void 0 ? void 0 : chunkInfos.time) !== null && _a !== void 0 ? _a : segment.time;
const estimatedDuration = (_b = chunkInfos === null || chunkInfos === void 0 ? void 0 : chunkInfos.duration) !== null && _b !== void 0 ? _b : segment.duration;
let estimatedEnd = estimatedStart + estimatedDuration;
if (safeAppendWindow[0] !== undefined) {
estimatedStart = Math.max(estimatedStart, safeAppendWindow[0]);
}
if (safeAppendWindow[1] !== undefined) {
estimatedEnd = Math.min(estimatedEnd, safeAppendWindow[1]);
}
const inventoryInfos = objectAssign({ segment, chunkSize, start: estimatedStart, end: estimatedEnd }, content);
const buffered = await appendSegmentToBuffer(playbackObserver, segmentSink, { data, inventoryInfos }, bufferGoal, cancelSignal);
return { content, segment, buffered };
}