rx-player
Version:
Canal+ HTML5 Video Player
88 lines (87 loc) • 3.38 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 { getMDHDTimescale, takePSSHOut } from "../../parsers/containers/isobmff";
import { getKeyIdFromInitSegment } from "../../parsers/containers/isobmff/utils";
import { getTimeCodeScale } from "../../parsers/containers/matroska";
import getISOBMFFTimingInfos from "../utils/get_isobmff_timing_infos";
import inferSegmentContainer from "../utils/infer_segment_container";
export default function segmentParser(loadedSegment, context, initTimescale) {
var _a, _b;
const { segment, periodStart, periodEnd } = context;
const { data } = loadedSegment;
const appendWindow = [periodStart, periodEnd];
if (data === null) {
if (segment.isInit) {
return {
segmentType: "init",
initializationData: null,
initializationDataSize: 0,
protectionData: [],
initTimescale: undefined,
};
}
return {
segmentType: "media",
chunkData: null,
chunkSize: 0,
chunkInfos: null,
chunkOffset: 0,
protectionData: [],
appendWindow,
};
}
const chunkData = new Uint8Array(data);
const containerType = inferSegmentContainer(context.type, context.mimeType);
// TODO take a look to check if this is an ISOBMFF/webm?
const seemsToBeMP4 = containerType === "mp4" || containerType === undefined;
const protectionData = [];
if (seemsToBeMP4) {
const psshInfo = takePSSHOut(chunkData);
let keyId;
if (segment.isInit) {
keyId = (_a = getKeyIdFromInitSegment(chunkData)) !== null && _a !== void 0 ? _a : undefined;
}
if (psshInfo.length > 0 || keyId !== undefined) {
protectionData.push({ initDataType: "cenc", keyId, initData: psshInfo });
}
}
if (segment.isInit) {
const timescale = containerType === "webm"
? getTimeCodeScale(chunkData, 0)
: // assume ISOBMFF-compliance
getMDHDTimescale(chunkData);
return {
segmentType: "init",
initializationData: chunkData,
initializationDataSize: 0,
initTimescale: timescale !== null && timescale !== void 0 ? timescale : undefined,
protectionData,
};
}
const chunkInfos = seemsToBeMP4
? getISOBMFFTimingInfos(chunkData, false, segment, initTimescale)
: null; // TODO extract time info from webm
const chunkOffset = (_b = segment.timestampOffset) !== null && _b !== void 0 ? _b : 0;
return {
segmentType: "media",
chunkData,
chunkSize: chunkData.length,
chunkInfos,
chunkOffset,
protectionData,
appendWindow,
};
}