[alsa-devel] Free-running MMAP Mode

Hi alsa-devel,

I'm working on implementing memory-mapped audio for a project that uses the alsa user-space API. My understanding is that typically, mmap mode requires explicit calls to mmap_begin/mmap_commit before and after every read/write in order to notify the driver of newly read/written frames.

Is there any way for a user to request a sort of "free-running" MMAP, where alsa just assumes that the data it needs has been written to the circular buffer and doesn't expect those begin/commit calls?

Thanks, Fletcher