opus-to-pcm | Decode raw opus packet to PCM

opus-to-pcm is a JavaScript library. opus-to-pcm has no bugs, it has no vulnerabilities and it has low support. However opus-to-pcm has a Non-SPDX License. You can install using 'npm i opus-to-pcm' or download it from GitHub, npm.

If we want to decode raw opus packet to PCM in our browsers, there are two ways to do that:. First approach is very straight forward but it needs to carry a big size decoder js file (approx. 900KB) and it is very resource expensive that become difficult to handle for the browsers that are running on low resource like mobile devices. Second approach is the best way but unfortunately decodeAudioData fails to decode raw opus packet. Actually it expects Ogg bitstream instead of raw opus packet. This project basically does that thing. It encapsulate raw opus packet into ogg packet on the fly so that decodeAudioData can decode to PCM data. One problem with this approach is that opus is not supported by all browsers till today e.g. Safari so libopus is included as a fallback. channels - no of channels in opus data. fallback - true/false. Whether it will use libopus as fallback or not. Default is true. libopusPath - If fallback is true, you must provide libopus.js file path. A pre-built libopus file is available in dist directory. Decoder fire an event decode whenever it completes decoding. Usually it decodes several opus packet at a time for better performance although it need to be provided single opus packet into decode method.