libopus compile good, but help using encode function w/ getUserMedia?

[Mahesh Kommareddi]

Hi all,
 I tried the IRC, but I'm hoping I can get some help here as well. I'm basically brand new to emscripten. I'm trying to learn/get libopus to work in the browser. I'm interested in both encode + decoding in the browser.

I think I got everything compiled correctly. A gist of the emconfigure, emmake:
https://gist.github.com/mkommar/9f51db6a2da114a5dab4

1) Do I compile the .a file or the .so file?
emcc libopus.so -o libopusa.html -s EXPORTED_FUNCTIONS="['_opus_encoder_create', '_opus_encoder_ctl', '_opus_encode', '_opus_encode_float', '_opus_encoder_destroy', '_opus_decoder_create', '_opus_decode', '_opus_decode_float', '_opus_decoder_destroy', '_encode_buffer', '_opus_strerror']" -s RESERVED_FUNCTION_POINTERS=1

If I compile the .so file, I can init the proper encoders and decoders and run the opus_ecnoder_ctl for the encoder.

https://gist.github.com/mkommar/e32977f6a2502c87bd47

but I can't seem to understand how to actually use the opus_encode (pointers, stackmax, etc) as working with the library by sending data to the function seems to escape me .

Can anyone help or is there anyone I can get referred to?

[Alon Zakai]

General docs for such things are at

http://kripken.github.io/emscripten-site/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.html

See the example with malloc for passing a pointer to allocated memory, etc., which you'll probably need if opus_encode receives pointers.

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[Mahesh Kommareddi]

Thanks for the help.

Very helpful. I'm woefully needing help through my first foray and found this GitHub repo to guide me through things and it echos your insight.

https://github.com/F1LT3R/voip-js/blob/master/lib/opus.js

Really appreciate the help.

Mahesh

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