JS bindings for libopus 1.4, p

JS bindings for libopus 1.4, 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(); Note: WASM

If your environment doesn't support WASM, you can try the JS-only module. Do note that the JS-only version barely has optimizations due to compiler/toolchain limitations, and should only be used as a last resort.

var encoder = new OpusScript(samplingRate, channels, OpusScript.Application.AUDIO, { wasm: false }); Note: 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";