143 lines
4 KiB
TypeScript
143 lines
4 KiB
TypeScript
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import { logger } from '@server/helpers/logger'
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import { FFmpegCommandWrapper, getDefaultAvailableEncoders } from '@shared/ffmpeg'
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import { AvailableEncoders, EncoderOptionsBuilder } from '@shared/models'
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// ---------------------------------------------------------------------------
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// Profile manager to get and change default profiles
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// ---------------------------------------------------------------------------
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class VideoTranscodingProfilesManager {
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private static instance: VideoTranscodingProfilesManager
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// 1 === less priority
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private readonly encodersPriorities = {
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vod: this.buildDefaultEncodersPriorities(),
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live: this.buildDefaultEncodersPriorities()
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}
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private readonly availableEncoders = getDefaultAvailableEncoders()
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private availableProfiles = {
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vod: [] as string[],
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live: [] as string[]
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}
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private constructor () {
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this.buildAvailableProfiles()
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}
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getAvailableEncoders (): AvailableEncoders {
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return {
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available: this.availableEncoders,
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encodersToTry: {
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vod: {
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video: this.getEncodersByPriority('vod', 'video'),
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audio: this.getEncodersByPriority('vod', 'audio')
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},
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live: {
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video: this.getEncodersByPriority('live', 'video'),
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audio: this.getEncodersByPriority('live', 'audio')
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}
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}
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}
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}
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getAvailableProfiles (type: 'vod' | 'live') {
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return this.availableProfiles[type]
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}
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addProfile (options: {
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type: 'vod' | 'live'
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encoder: string
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profile: string
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builder: EncoderOptionsBuilder
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}) {
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const { type, encoder, profile, builder } = options
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const encoders = this.availableEncoders[type]
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if (!encoders[encoder]) encoders[encoder] = {}
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encoders[encoder][profile] = builder
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this.buildAvailableProfiles()
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}
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removeProfile (options: {
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type: 'vod' | 'live'
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encoder: string
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profile: string
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}) {
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const { type, encoder, profile } = options
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delete this.availableEncoders[type][encoder][profile]
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this.buildAvailableProfiles()
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}
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addEncoderPriority (type: 'vod' | 'live', streamType: 'audio' | 'video', encoder: string, priority: number) {
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this.encodersPriorities[type][streamType].push({ name: encoder, priority })
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FFmpegCommandWrapper.resetSupportedEncoders()
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}
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removeEncoderPriority (type: 'vod' | 'live', streamType: 'audio' | 'video', encoder: string, priority: number) {
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this.encodersPriorities[type][streamType] = this.encodersPriorities[type][streamType]
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.filter(o => o.name !== encoder && o.priority !== priority)
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FFmpegCommandWrapper.resetSupportedEncoders()
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}
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private getEncodersByPriority (type: 'vod' | 'live', streamType: 'audio' | 'video') {
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return this.encodersPriorities[type][streamType]
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.sort((e1, e2) => {
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if (e1.priority > e2.priority) return -1
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else if (e1.priority === e2.priority) return 0
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return 1
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})
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.map(e => e.name)
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}
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private buildAvailableProfiles () {
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for (const type of [ 'vod', 'live' ]) {
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const result = new Set()
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const encoders = this.availableEncoders[type]
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for (const encoderName of Object.keys(encoders)) {
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for (const profile of Object.keys(encoders[encoderName])) {
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result.add(profile)
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}
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}
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this.availableProfiles[type] = Array.from(result)
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}
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logger.debug('Available transcoding profiles built.', { availableProfiles: this.availableProfiles })
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}
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private buildDefaultEncodersPriorities () {
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return {
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video: [
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{ name: 'libx264', priority: 100 }
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],
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// Try the first one, if not available try the second one etc
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audio: [
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// we favor VBR, if a good AAC encoder is available
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{ name: 'libfdk_aac', priority: 200 },
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{ name: 'aac', priority: 100 }
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]
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}
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}
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static get Instance () {
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return this.instance || (this.instance = new this())
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}
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}
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// ---------------------------------------------------------------------------
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export {
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VideoTranscodingProfilesManager
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}
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