Hi
I'm a newbie to ALSA. I'm targeting to use ALSA or ASoC solution in order to route capture/playback streams of a USB headset (that uses ALSA) to/from my own DSP device. I saw DPCM which is a part of ASoC manages dynamically connections between FE and BE streams. In my product, I just need them to be connected. No need for the "dynamically" part.
My questions: 1. Can someone please recommend a step by step guide, or an example how to make my DSP "look like" a BE? Do I need to write an ALSA driver for it or a ASOC driver? 2. After I have it as a BE, how can I connect the streams? I want the transfers to be done in kernel level, without need for application interventions for each buffer. 3. I'm using kernel 2.6.10 (quite old, I know). I don't want to port my entire kernel to a new one. As my requirement is not very complex, I don't think I'd encounter too many issues. However, if someone can point the important parts I need to back port, I'd appreciate it. Alternatively, if someone sees a showstopper in this approach, I'd be grateful to be aware of it.
Thanks, Best regards,
Eli
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