Re: [alsa-devel] hw_params function and OSS emulation

Takashi Iwai wrote:

Alternatively, you can remember the last allocated buffer-size and re-use the same buffer if the requested size is less than it. Since the buffer size change won't happen _so often_ (even via OSS emulation), this would work well in practice, too.

Hmm... Neither of these options is really that great. I think I like the idea of pre-allocating the buffer in .new. What is a reasonable maximum size for the DMA buffer? 32KB seems small to me. When I was testing OSS emulation, the first call to .hw_params passed a DMA buffer size of over 1MB!