126 lines
4.0 KiB
TypeScript
126 lines
4.0 KiB
TypeScript
import { video_info } from "."
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import { FormatInterface, LiveEnded, LiveStreaming, Stream } from "./classes/LiveStream"
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export enum StreamType{
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Arbitrary = 'arbitrary',
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Raw = 'raw',
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OggOpus = 'ogg/opus',
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WebmOpus = 'webm/opus',
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Opus = 'opus',
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}
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interface StreamOptions {
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low_latency : boolean;
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preferred_quality : "144p" | "240p" | "360p" | "480p" | "720p" | "1080p"
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}
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interface InfoData{
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LiveStreamData : {
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isLive : boolean
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dashManifestUrl : string
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hlsManifestUrl : string
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}
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html5player : string
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format : any[]
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video_details : any
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}
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function parseAudioFormats(formats : any[]){
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let result: any[] = []
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formats.forEach((format) => {
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let type = format.mimeType as string
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if(type.startsWith('audio')){
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format.codec = type.split('codecs="')[1].split('"')[0]
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format.container = type.split('audio/')[1].split(';')[0]
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result.push(format)
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}
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})
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return result
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}
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export async function stream(url : string, options : StreamOptions = { low_latency : false, preferred_quality : "144p" }): Promise<Stream | LiveStreaming | LiveEnded>{
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let info = await video_info(url)
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let final: any[] = [];
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let type : StreamType;
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if(!options.low_latency) options.low_latency = false
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if(!options.preferred_quality) options.preferred_quality = "144p"
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if(info.LiveStreamData.isLive === true && info.LiveStreamData.hlsManifestUrl !== null) {
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return await live_stream(info as InfoData, options)
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}
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let audioFormat = parseAudioFormats(info.format)
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let opusFormats = filterFormat(audioFormat, "opus")
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if(opusFormats.length === 0){
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type = StreamType.Arbitrary
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final.push(audioFormat[audioFormat.length - 1])
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}
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else{
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type = StreamType.WebmOpus
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final.push(opusFormats[opusFormats.length - 1])
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}
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if(final.length === 0) {
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type = StreamType.Arbitrary
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final.push(info.format[info.format.length - 1])
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}
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return new Stream(final[0].url, type, info.video_details.durationInSec)
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}
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export async function stream_from_info(info : InfoData, options : StreamOptions = { low_latency : false, preferred_quality : "144p" }): Promise<Stream | LiveStreaming | LiveEnded>{
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let final: any[] = [];
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let type : StreamType;
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if(!options.low_latency) options.low_latency = false
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if(!options.preferred_quality) options.preferred_quality = "144p"
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if(info.LiveStreamData.isLive === true && info.LiveStreamData.hlsManifestUrl !== null) {
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return await live_stream(info as InfoData, options)
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}
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let audioFormat = parseAudioFormats(info.format)
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let opusFormats = filterFormat(audioFormat, "opus")
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if(opusFormats.length === 0){
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type = StreamType.Arbitrary
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final.push(audioFormat[audioFormat.length - 1])
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}
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else{
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type = StreamType.WebmOpus
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final.push(opusFormats[opusFormats.length - 1])
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}
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if(final.length === 0) {
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type = StreamType.Arbitrary
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final.push(info.format[info.format.length - 1])
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}
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return new Stream(final[0].url, type, info.video_details.durationInSec)
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}
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function filterFormat(formats : any[], codec : string){
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let result: any[] = []
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formats.forEach((format) => {
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if(format.codec === codec) result.push(format)
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})
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return result
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}
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async function live_stream(info : InfoData, options : StreamOptions): Promise<LiveStreaming | LiveEnded>{
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let res_144 : FormatInterface = {
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url : '',
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targetDurationSec : 0,
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maxDvrDurationSec : 0
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}
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info.format.forEach((format) => {
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if(format.qualityLabel === options.preferred_quality) res_144 = format
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else return
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})
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let stream : LiveStreaming | LiveEnded
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if(info.video_details.duration === '0') {
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stream = new LiveStreaming((res_144.url.length !== 0) ? res_144 : info.format[info.format.length - 2], options.low_latency)
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}
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else {
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stream = new LiveEnded((res_144.url.length !== 0) ? res_144 : info.format[info.format.length - 2])
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}
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return stream
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} |