buffer time (size) configuration

[renanyoy]

for now the buffer seems to be set at 200 milliseconds (at 44100).
I would like to use mic_stream to do real time things
would be nice if we could setup the buffer size in milliseconds as config parameter.
for example in my case at 20ms for a 60 fps renderer

[anarchuser]

Sorry, the buffer size gets decided by the native libraries themselves.
You can have a look at the documentation of your platform of choice and find out whether there is any way to change it there. If you do find something we can integrate it.

[renanyoy]

I forked mic_stream and patched it with a fixed buffer at 512 bytes for both iOS and Android. it works well.

https://github.com/aestesis/mic_stream

on android I had some doubts it could work cause of AudioRecord.getMinBufferSize but I just ignore its result and it works ;)

[renanyoy]

btw, I use this code to transform the pcm values in float

    for (int i = 0; i < data.length; i += 2) {
      final int v0 = (data[i]) + (data[i + 1] << 8);
      final int value = v0 > 32767 ? v0 - 65536 : v0;
      final double vs = value / 32768.0;
      ...
}

I thing there is maybe a bug in your example

[anarchuser]

a fixed buffer size certainly works to some degree. I need to test it to ensure it doesn't misbehave, though.

[anarchuser]

also yes, the example isn't exactly good code. Feel free to improve it if you enjoy it.