Hi, I started to play with ALSA 2 days ago and Im trying to figure out how
ALSA works and how to add PCM devices in the configuration file.
I wrote a simple plugin for my microphone which is supposed to convert the
data into a 32 bps format. Here is how it looks like :
pcm.jcb-in-1 {
type hw
card 0
device 2
}
ctl.jcb-in-1 {
type hw
card 0
}
pcm.MicPlug
{
type plug
slave
{
pcm jcb-in-1
format S32_LE
}
}
So now if Im opening the PCM device named MicPlug and start reading on it, Im
expecting (which may totally be wrong) that the data I read will be in a
32bps format, which is never happening. In fact, the data I read is exactly
in the format that I set using "snd_pcm_hw_params_set_format". Is the
conversion supposed to happen or am I expecting something that is totally
wrong?
Also is there any good documentation about how the asound.conf file works? I
found some stuff on the web but it rather sucks.
Thank you!
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