How to use the prism-media.VolumeTransformer function in prism-media
To help you get started, we’ve selected a few prism-media examples, based on popular ways it is used in public projects.
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discordjs / discord.js / src / client / voice / player / BasePlayer.js View on Github 
playOpusStream(stream, options, streams = {}) {
this.destroyDispatcher();
streams.opus = stream;
if (options.volume !== false && !streams.input) {
streams.input = stream;
const decoder = new prism.opus.Decoder({ channels: 2, rate: 48000, frameSize: 960 });
streams.volume = new prism.VolumeTransformer({ type: 's16le', volume: options ? options.volume : 1 });
streams.opus = stream
.pipe(decoder)
.pipe(streams.volume)
.pipe(new prism.opus.Encoder({ channels: 2, rate: 48000, frameSize: 960 }));
}
const dispatcher = this.createDispatcher(options, streams);
streams.opus.pipe(dispatcher);
return dispatcher;
}playPCMStream(stream, options, streams = {}) {
this.destroyDispatcher();
const opus = streams.opus = new prism.opus.Encoder({ channels: 2, rate: 48000, frameSize: 960 });
if (options && options.volume === false) {
stream.pipe(opus);
return this.playOpusStream(opus, options, streams);
}
streams.volume = new prism.VolumeTransformer({ type: 's16le', volume: options ? options.volume : 1 });
stream.pipe(streams.volume).pipe(opus);
return this.playOpusStream(opus, options, streams);
}prism-media
Easy-to-use stream-based media transcoding
