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opusscript

opusscript

JS bindings for libopus 1.2.1, ported with emscripten

var opusscript = require("opusscript");
 
// 48kHz sampling rate, 20ms frame duration, stereo audio (2 channels)
var samplingRate = 48000;
var frameDuration = 20;
var channels = 2;
 
// Optimize encoding for audio. Available applications are VOIP, AUDIO, and RESTRICTED_LOWDELAY
var encoder = new opusscript(samplingRate, channels, opusscript.Application.AUDIO);
 
var frameSize = samplingRate * frameDuration / 1000;
 
// Get PCM data from somewhere and encode it into opus
var pcmData = new Buffer(pcmSource);
var encodedPacket = encoder.encode(pcmData, frameSize);
 
// Decode the opus packet back into PCM
var decodedPacket = encoder.decode(encodedPacket);
 
// Delete the encoder when finished with it (Emscripten does not automatically call C++ object destructors)
encoder.delete();

TypeScript

Since this module wasn't written for TypeScript, you need to use import = require syntax.

// Import using:
import OpusScript = require('opusscript');
 
// and NOT:
import OpusScript from 'opusscript';