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import Hlsjs from 'hls.js'
import videojs from 'video.js'
import { Events, Segment } from '@peertube/p2p-media-loader-core'
import { Engine, initHlsJsPlayer, initVideoJsContribHlsJsPlayer } from '@peertube/p2p-media-loader-hlsjs'
import { logger } from '@root-helpers/logger'
import { timeToInt } from '@shared/core-utils'
import { P2PMediaLoaderPluginOptions, PlayerNetworkInfo } from '../../types'
import { registerConfigPlugin, registerSourceHandler } from './hls-plugin'
registerConfigPlugin(videojs)
registerSourceHandler(videojs)
const Plugin = videojs.getPlugin('plugin')
class P2pMediaLoaderPlugin extends Plugin {
private readonly CONSTANTS = {
INFO_SCHEDULER: 1000 // Don't change this
}
private readonly options: P2PMediaLoaderPluginOptions
private hlsjs: Hlsjs
private p2pEngine: Engine
private statsP2PBytes = {
pendingDownload: [] as number[],
pendingUpload: [] as number[],
numPeers: 0,
totalDownload: 0,
totalUpload: 0
}
private statsHTTPBytes = {
pendingDownload: [] as number[],
totalDownload: 0
}
private startTime: number
private networkInfoInterval: any
constructor (player: videojs.Player, options?: P2PMediaLoaderPluginOptions) {
super(player)
this.options = options
// FIXME: typings https://github.com/Microsoft/TypeScript/issues/14080
if (!(videojs as any).Html5Hlsjs) {
logger.warn('HLS.js does not seem to be supported. Try to fallback to built in HLS.')
if (!player.canPlayType('application/vnd.apple.mpegurl')) {
const message = 'Cannot fallback to built-in HLS'
logger.warn(message)
player.ready(() => player.trigger('error', new Error(message)))
return
}
} else {
// FIXME: typings https://github.com/Microsoft/TypeScript/issues/14080
(videojs as any).Html5Hlsjs.addHook('beforeinitialize', (videojsPlayer: any, hlsjs: any) => {
this.hlsjs = hlsjs
})
initVideoJsContribHlsJsPlayer(player)
}
this.startTime = timeToInt(options.startTime)
player.src({
type: options.type,
src: options.src
})
player.ready(() => {
this.initializeCore()
if ((videojs as any).Html5Hlsjs) {
this.initializePlugin()
}
})
}
dispose () {
if (this.hlsjs) this.hlsjs.destroy()
if (this.p2pEngine) this.p2pEngine.destroy()
clearInterval(this.networkInfoInterval)
}
getCurrentLevel () {
if (!this.hlsjs) return undefined
return this.hlsjs.levels[this.hlsjs.currentLevel]
}
getLiveLatency () {
return Math.round(this.hlsjs.latency)
}
getHLSJS () {
return this.hlsjs
}
private initializeCore () {
this.player.one('play', () => {
this.player.addClass('vjs-has-big-play-button-clicked')
})
this.player.one('canplay', () => {
if (this.startTime) {
this.player.currentTime(this.startTime)
}
})
}
private initializePlugin () {
initHlsJsPlayer(this.hlsjs)
this.p2pEngine = this.options.loader.getEngine()
this.p2pEngine.on(Events.SegmentError, (segment: Segment, err) => {
logger.error(`Segment ${segment.id} error.`, err)
this.options.redundancyUrlManager.removeBySegmentUrl(segment.requestUrl)
})
this.statsP2PBytes.numPeers = 1 + this.options.redundancyUrlManager.countBaseUrls()
this.runStats()
this.hlsjs.on(Hlsjs.Events.LEVEL_SWITCHED, () => this.player.trigger('engineResolutionChange'))
}
private runStats () {
this.p2pEngine.on(Events.PieceBytesDownloaded, (method: string, _segment, bytes: number) => {
const elem = method === 'p2p' ? this.statsP2PBytes : this.statsHTTPBytes
elem.pendingDownload.push(bytes)
elem.totalDownload += bytes
})
this.p2pEngine.on(Events.PieceBytesUploaded, (method: string, _segment, bytes: number) => {
if (method !== 'p2p') {
logger.error(`Received upload from unknown method ${method}`)
return
}
this.statsP2PBytes.pendingUpload.push(bytes)
this.statsP2PBytes.totalUpload += bytes
})
this.p2pEngine.on(Events.PeerConnect, () => this.statsP2PBytes.numPeers++)
this.p2pEngine.on(Events.PeerClose, () => this.statsP2PBytes.numPeers--)
this.networkInfoInterval = setInterval(() => {
const p2pDownloadSpeed = this.arraySum(this.statsP2PBytes.pendingDownload)
const p2pUploadSpeed = this.arraySum(this.statsP2PBytes.pendingUpload)
const httpDownloadSpeed = this.arraySum(this.statsHTTPBytes.pendingDownload)
this.statsP2PBytes.pendingDownload = []
this.statsP2PBytes.pendingUpload = []
this.statsHTTPBytes.pendingDownload = []
return this.player.trigger('p2pInfo', {
source: 'p2p-media-loader',
http: {
downloadSpeed: httpDownloadSpeed,
downloaded: this.statsHTTPBytes.totalDownload
},
p2p: {
downloadSpeed: p2pDownloadSpeed,
uploadSpeed: p2pUploadSpeed,
numPeers: this.statsP2PBytes.numPeers,
downloaded: this.statsP2PBytes.totalDownload,
uploaded: this.statsP2PBytes.totalUpload
},
bandwidthEstimate: (this.hlsjs as any).bandwidthEstimate / 8
} as PlayerNetworkInfo)
}, this.CONSTANTS.INFO_SCHEDULER)
}
private arraySum (data: number[]) {
return data.reduce((a: number, b: number) => a + b, 0)
}
}
videojs.registerPlugin('p2pMediaLoader', P2pMediaLoaderPlugin)
export { P2pMediaLoaderPlugin }
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