[alsa-devel] callbacks order while capturing from Line-IN

[Manu Abraham]

Hi,

By now I am a bit confused.

I am seeing a certain pattern in which the callbacks are invoked:

- hw_params()
- prepare()
- trigger(); // Start DMA
- pointer();
            --> gets data after interrupt is handled
- trigger(); // Stop DMA
- prepare();
- trigger(); // Start DMA
- pointer();
           --> gets data after interrupt is handled

..
..

and so on.

Is this the right behaviour that's expected from a function ALSA
capture driver ?
I am trying to understand why there is Start DMA, Stop DMA, Start DMA, Stop DMA
in a cyclic fashion for each of the interrupts in my setup.

Thanks,
Manu