Go Packers

This commit is contained in:
Max Isom 2020-03-18 17:15:45 -05:00
parent e57d86d7cc
commit 6a02088b04
5 changed files with 139 additions and 57 deletions

View file

@ -68,12 +68,8 @@ export default class {
throw new Error('Seek position is outside the range of the song.');
}
if (await this.isCached(currentSong.url)) {
this.dispatcher = this.voiceConnection.play(this.getCachedPath(currentSong.url), {seek: positionSeconds});
} else {
const stream = await this.getStream(currentSong.url, {seek: positionSeconds});
this.dispatcher = this.voiceConnection.play(stream, {type: 'webm/opus'});
}
const stream = await this.getStream(currentSong.url, {seek: positionSeconds});
this.dispatcher = this.voiceConnection.play(stream, {type: 'webm/opus'});
this.attachListeners();
this.startTrackingPosition(positionSeconds);
@ -107,12 +103,8 @@ export default class {
return;
}
if (await this.isCached(currentSong.url)) {
this.dispatcher = this.voiceConnection.play(this.getCachedPath(currentSong.url));
} else {
const stream = await this.getStream(currentSong.url);
this.dispatcher = this.voiceConnection.play(stream, {type: 'webm/opus'});
}
const stream = await this.getStream(currentSong.url);
this.dispatcher = this.voiceConnection.play(stream, {type: 'webm/opus'});
this.attachListeners();
@ -154,67 +146,77 @@ export default class {
}
}
private async getStream(url: string, options: {seek?: number} = {}): Promise<Readable|string> {
private async getStream(url: string, options: {seek?: number} = {}): Promise<Readable> {
const cachedPath = this.getCachedPath(url);
let ffmpegInput = '';
const ffmpegInputOptions = [];
let shouldCacheVideo = false;
if (await this.isCached(url)) {
return cachedPath;
}
ffmpegInput = cachedPath;
} else {
// Not yet cached, must download
const info = await ytdl.getInfo(url);
// Not yet cached, must download
const info = await ytdl.getInfo(url);
const {formats} = info;
const {formats} = info;
const filter = (format: ytdl.videoFormat): boolean => format.codecs === 'opus' && format.container === 'webm' && format.audioSampleRate !== undefined && parseInt(format.audioSampleRate, 10) === 48000;
const filter = (format: ytdl.videoFormat): boolean => format.codecs === 'opus' && format.container === 'webm' && format.audioSampleRate !== undefined && parseInt(format.audioSampleRate, 10) === 48000;
let format = formats.find(filter);
let format = formats.find(filter);
const nextBestFormat = (formats: ytdl.videoFormat[]): ytdl.videoFormat | undefined => {
if (formats[0].live) {
formats = formats.sort((a, b) => (b as any).audioBitrate - (a as any).audioBitrate); // Bad typings
const nextBestFormat = (formats: ytdl.videoFormat[]): ytdl.videoFormat | undefined => {
if (formats[0].live) {
formats = formats.sort((a, b) => (b as any).audioBitrate - (a as any).audioBitrate); // Bad typings
return formats.find(format => [128, 127, 120, 96, 95, 94, 93].includes(parseInt(format.itag as unknown as string, 10))); // Bad typings
}
return formats.find(format => [128, 127, 120, 96, 95, 94, 93].includes(parseInt(format.itag as unknown as string, 10))); // Bad typings
}
formats = formats
.filter(format => format.averageBitrate)
.sort((a, b) => b.averageBitrate - a.averageBitrate);
return formats.find(format => !format.bitrate) ?? formats[0];
};
if (!format) {
format = nextBestFormat(info.formats);
formats = formats
.filter(format => format.averageBitrate)
.sort((a, b) => b.averageBitrate - a.averageBitrate);
return formats.find(format => !format.bitrate) ?? formats[0];
};
if (!format) {
// If still no format is found, throw
throw new Error('Can\'t find suitable format.');
format = nextBestFormat(info.formats);
if (!format) {
// If still no format is found, throw
throw new Error('Can\'t find suitable format.');
}
}
ffmpegInput = format.url;
// Don't cache livestreams or long videos
const MAX_CACHE_LENGTH_SECONDS = 30 * 60; // 30 minutes
shouldCacheVideo = !info.player_response.videoDetails.isLiveContent && parseInt(info.length_seconds, 10) < MAX_CACHE_LENGTH_SECONDS;
ffmpegInputOptions.push(...[
'-reconnect',
'1',
'-reconnect_streamed',
'1',
'-reconnect_delay_max',
'5'
]);
}
const inputOptions = [
'-reconnect',
'1',
'-reconnect_streamed',
'1',
'-reconnect_delay_max',
'5'
];
// Add seek parameter if necessary
if (options.seek) {
inputOptions.push('-ss', options.seek.toString());
ffmpegInputOptions.push('-ss', options.seek.toString());
}
const youtubeStream = ffmpeg(format.url).inputOptions(inputOptions).noVideo().audioCodec('libopus').outputFormat('webm').pipe() as PassThrough;
// Create stream and pipe to capacitor
const youtubeStream = ffmpeg(ffmpegInput).inputOptions(ffmpegInputOptions).noVideo().audioCodec('libopus').outputFormat('webm').pipe() as PassThrough;
const capacitor = new WriteStream();
youtubeStream.pipe(capacitor);
// Don't cache livestreams or long videos
const MAX_CACHE_LENGTH_SECONDS = 30 * 60; // 30 minutes
if (!info.player_response.videoDetails.isLiveContent && parseInt(info.length_seconds, 10) < MAX_CACHE_LENGTH_SECONDS) {
// Cache video if necessary
if (shouldCacheVideo) {
const cacheTempPath = this.getCachedPathTemp(url);
const cacheStream = createWriteStream(cacheTempPath);