Re: [alsa-devel] Some idea about usb audio gadget driver.

Bryan Wu wrote:

• A new usb gadget driver which recognized by Linux/Windows PC as an

USB audio card.

• There is an ALSA sound card on the same embedded device.
• The usb gadget driver receives audio data from host and send them

to ALSA sound card to playback ...

• Is there any similar things on this planet?
• How about gmidi usb midi gadget driver?

gmidi does not access other sound cards; it makes the USB MIDI interface available to userspace.

• How can I open/playback/record/close a ALSA sound card in kernel

space not using alsalib in user space?

If you really want to do this in the kernel, have a look at the OSS emulation (sound/core/oss/).

Regards, Clemens