[alsa-devel] alsa-lib support for compress offload

[Takashi Iwai]

At Fri, 16 Jan 2015 09:52:58 +0000,
Qais Yousef wrote:
> 
> Hi,
> 
> As far as I understand I need to use something similar to tinycompress 
> to use alsa devices that supports compress offload. When I asked on 
> gstreamer list [1] about alsasink support for compress offload they said 
> yes. But I can see that gstalsasink.c [2] only uses the standard 
> alsa-lib api which AFAICT doesn't support compress offload.
> 
> Did I misread the code and alsa-lib actually works with compress 
> offload? Gstreamer refers to the feature "passthrough" and associate it 
> with SPDIF[3], are they taking advantage of some other alsa feature that 
> looks like compress offload?

It's a normal IEC958 passthrough, nothing to do with the compress
offload.  And, no, we have no support for compress API in alsa-lib
yet.  Just because no one submitted the patches.


Takashi