[alsa-devel] hw_params function and OSS emulation

[Takashi Iwai]

At Thu, 23 Aug 2007 12:36:43 -0500,
Timur Tabi wrote:
> 
> Takashi Iwai wrote:
> 
> >> On a side note, I notice that ALSA has some scatter-gather support.  If an 
> >> application uses S/G, I presume the concept of a DMA buffer size doesn't even 
> >> apply?
> > 
> > The SG-buffer isn't for applications but for drivers.  From the
> > application viewpoint, the buffer looks linear.
> 
> Yes, but in SG, the application allocates the DMA buffer, and a list of 
> physical addresses is passed to the driver.

Err, usually, application = user-space application.  Do you mean
really this?


Takashi