rx-player
Version:
Canal+ HTML5 Video Player
105 lines (104 loc) • 4.26 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.
*/
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = extractTimingsInfos;
var log_1 = require("../../log");
var isobmff_1 = require("../../parsers/containers/isobmff");
var isobmff_2 = require("./isobmff");
/**
* Try to obtain time information from the given data.
* @param {Uint8Array} data
* @param {boolean} isChunked
* @param {Object} segment
* @param {boolean} isLive
* @returns {Object}
*/
function extractTimingsInfos(data, isChunked, initTimescale, segment, isLive) {
var e_1, _a;
var _b;
var nextSegments = [];
var chunkInfos;
var tfxdSegment;
var tfrfSegments;
if (isLive) {
var traf = (0, isobmff_1.getTRAF)(data);
if (traf !== null) {
tfrfSegments = (0, isobmff_2.parseTfrf)(traf);
tfxdSegment = (0, isobmff_2.parseTfxd)(traf);
}
else {
log_1.default.warn("smooth", "could not find traf atom");
}
}
if (tfrfSegments !== undefined) {
try {
for (var tfrfSegments_1 = __values(tfrfSegments), tfrfSegments_1_1 = tfrfSegments_1.next(); !tfrfSegments_1_1.done; tfrfSegments_1_1 = tfrfSegments_1.next()) {
var tfrfSeg = tfrfSegments_1_1.value;
nextSegments.push({
time: tfrfSeg.time,
duration: tfrfSeg.duration,
timescale: initTimescale,
});
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (tfrfSegments_1_1 && !tfrfSegments_1_1.done && (_a = tfrfSegments_1.return)) _a.call(tfrfSegments_1);
}
finally { if (e_1) throw e_1.error; }
}
}
if (tfxdSegment !== undefined) {
chunkInfos = {
time: tfxdSegment.time / initTimescale,
duration: tfxdSegment.duration / initTimescale,
};
return { nextSegments: nextSegments, chunkInfos: chunkInfos, scaledSegmentTime: tfxdSegment.time };
}
if (isChunked || !segment.complete) {
return { nextSegments: nextSegments, chunkInfos: null, scaledSegmentTime: undefined };
}
var segmentDuration = segment.duration * initTimescale;
// we could always make a mistake when reading a container.
// If the estimate is too far from what the segment seems to imply, take
// the segment infos instead.
var maxDecodeTimeDelta = Math.min(initTimescale * 0.9, segmentDuration / 4);
var trunDuration = (0, isobmff_1.getDurationFromTrun)(data);
var scaledSegmentTime = ((_b = segment.privateInfos) === null || _b === void 0 ? void 0 : _b.smoothMediaSegment) !== undefined
? segment.privateInfos.smoothMediaSegment.time
: Math.round(segment.time * initTimescale);
if (trunDuration !== undefined &&
Math.abs(trunDuration - segmentDuration) <= maxDecodeTimeDelta) {
chunkInfos = { time: segment.time, duration: trunDuration / initTimescale };
}
else {
chunkInfos = { time: segment.time, duration: segment.duration };
}
return { nextSegments: nextSegments, chunkInfos: chunkInfos, scaledSegmentTime: scaledSegmentTime };
}