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import { HybridLoaderSettings } from '@peertube/p2p-media-loader-core'
import { HlsJsEngineSettings } from '@peertube/p2p-media-loader-hlsjs'
import { LiveVideoLatencyMode } from '@shared/models'
import { getAverageBandwidthInStore } from '../../peertube-player-local-storage'
import { P2PMediaLoader, P2PMediaLoaderPluginOptions } from '../../types'
import { PeertubePlayerManagerOptions } from '../../types/manager-options'
import { getRtcConfig } from '../common'
import { RedundancyUrlManager } from '../p2p-media-loader/redundancy-url-manager'
import { segmentUrlBuilderFactory } from '../p2p-media-loader/segment-url-builder'
import { segmentValidatorFactory } from '../p2p-media-loader/segment-validator'
export class HLSOptionsBuilder {
constructor (
private options: PeertubePlayerManagerOptions,
private p2pMediaLoaderModule?: any
) {
}
getPluginOptions () {
const commonOptions = this.options.common
const redundancyUrlManager = new RedundancyUrlManager(this.options.p2pMediaLoader.redundancyBaseUrls)
const p2pMediaLoaderConfig = this.getP2PMediaLoaderOptions(redundancyUrlManager)
const loader = new this.p2pMediaLoaderModule.Engine(p2pMediaLoaderConfig).createLoaderClass() as P2PMediaLoader
const p2pMediaLoader: P2PMediaLoaderPluginOptions = {
redundancyUrlManager,
type: 'application/x-mpegURL',
startTime: commonOptions.startTime,
src: this.options.p2pMediaLoader.playlistUrl,
loader
}
const hlsjs = {
levelLabelHandler: (level: { height: number, width: number }) => {
const resolution = Math.min(level.height || 0, level.width || 0)
const file = this.options.p2pMediaLoader.videoFiles.find(f => f.resolution.id === resolution)
// We don't have files for live videos
if (!file) return level.height
let label = file.resolution.label
if (file.fps >= 50) label += file.fps
return label
},
html5: {
hlsjsConfig: this.getHLSJSOptions(loader)
}
}
return { p2pMediaLoader, hlsjs }
}
// ---------------------------------------------------------------------------
private getP2PMediaLoaderOptions (redundancyUrlManager: RedundancyUrlManager): HlsJsEngineSettings {
let consumeOnly = false
if ((navigator as any)?.connection?.type === 'cellular') {
console.log('We are on a cellular connection: disabling seeding.')
consumeOnly = true
}
const trackerAnnounce = this.options.p2pMediaLoader.trackerAnnounce
.filter(t => t.startsWith('ws'))
const specificLiveOrVODOptions = this.options.common.isLive
? this.getP2PMediaLoaderLiveOptions()
: this.getP2PMediaLoaderVODOptions()
return {
loader: {
trackerAnnounce,
rtcConfig: getRtcConfig(),
simultaneousHttpDownloads: 1,
httpFailedSegmentTimeout: 1000,
segmentValidator: segmentValidatorFactory(this.options.p2pMediaLoader.segmentsSha256Url, this.options.common.isLive),
segmentUrlBuilder: segmentUrlBuilderFactory(redundancyUrlManager, 1),
useP2P: this.options.common.p2pEnabled,
consumeOnly,
...specificLiveOrVODOptions
},
segments: {
swarmId: this.options.p2pMediaLoader.playlistUrl,
forwardSegmentCount: specificLiveOrVODOptions.p2pDownloadMaxPriority
}
}
}
private getP2PMediaLoaderLiveOptions (): Partial<HybridLoaderSettings> {
const base = {
requiredSegmentsPriority: 1
}
const latencyMode = this.options.common.liveOptions.latencyMode
switch (latencyMode) {
case LiveVideoLatencyMode.SMALL_LATENCY:
return {
...base,
useP2P: false,
httpDownloadProbability: 1
}
case LiveVideoLatencyMode.HIGH_LATENCY:
return base
default:
return base
}
}
private getP2PMediaLoaderVODOptions (): Partial<HybridLoaderSettings> {
return {
requiredSegmentsPriority: 3,
cachedSegmentExpiration: 86400000,
cachedSegmentsCount: 100,
httpDownloadMaxPriority: 9,
httpDownloadProbability: 0.06,
httpDownloadProbabilitySkipIfNoPeers: true,
p2pDownloadMaxPriority: 50
}
}
// ---------------------------------------------------------------------------
private getHLSJSOptions (loader: P2PMediaLoader) {
const specificLiveOrVODOptions = this.options.common.isLive
? this.getHLSLiveOptions()
: this.getHLSVODOptions()
const base = {
capLevelToPlayerSize: true,
autoStartLoad: false,
loader,
...specificLiveOrVODOptions
}
const averageBandwidth = getAverageBandwidthInStore()
if (!averageBandwidth) return base
return {
...base,
abrEwmaDefaultEstimate: averageBandwidth * 8, // We want bit/s
startLevel: -1,
testBandwidth: false,
debug: false
}
}
private getHLSLiveOptions () {
const latencyMode = this.options.common.liveOptions.latencyMode
switch (latencyMode) {
case LiveVideoLatencyMode.SMALL_LATENCY:
return {
liveSyncDurationCount: 2
}
case LiveVideoLatencyMode.HIGH_LATENCY:
return {
liveSyncDurationCount: 10
}
default:
return {
liveSyncDurationCount: 5
}
}
}
private getHLSVODOptions () {
return {
liveSyncDurationCount: 5
}
}
}
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