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https://github.com/musix-org/musix-oss
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40 lines
1.1 KiB
Markdown
40 lines
1.1 KiB
Markdown
opusscript
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==========
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### JS bindings for libopus 1.2.1, ported with emscripten
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```js
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var opusscript = require("opusscript");
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// 48kHz sampling rate, 20ms frame duration, stereo audio (2 channels)
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var samplingRate = 48000;
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var frameDuration = 20;
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var channels = 2;
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// Optimize encoding for audio. Available applications are VOIP, AUDIO, and RESTRICTED_LOWDELAY
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var encoder = new opusscript(samplingRate, channels, opusscript.Application.AUDIO);
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var frameSize = samplingRate * frameDuration / 1000;
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// Get PCM data from somewhere and encode it into opus
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var pcmData = new Buffer(pcmSource);
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var encodedPacket = encoder.encode(pcmData, frameSize);
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// Decode the opus packet back into PCM
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var decodedPacket = encoder.decode(encodedPacket);
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// Delete the encoder when finished with it (Emscripten does not automatically call C++ object destructors)
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encoder.delete();
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```
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#### TypeScript
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Since this module wasn't written for TypeScript, you need to use `import = require` syntax.
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```ts
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// Import using:
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import OpusScript = require('opusscript');
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// and NOT:
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import OpusScript from 'opusscript';
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```
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