[alsa-devel] question on hardware mixing

Harsha, Priya priya.harsha at intel.com
Tue Dec 9 04:26:22 CET 2008

I was thinking to pass this information from snd_pcm_t->private_data. This gets copied to substream->private_data internally which would reach the driver. Am I right here?

-----Original Message-----
From: Harsha, Priya 
Sent: Tuesday, December 09, 2008 8:54 AM
To: 'Lee Revell'
Cc: alsa-devel at alsa-project.org
Subject: RE: [alsa-devel] question on hardware mixing

I have a DSP engine with FW. I need to pass this information to the FW which does some processing for voice and music differently.


-----Original Message-----
From: rlrevell at gmail.com [mailto:rlrevell at gmail.com] On Behalf Of Lee Revell
Sent: Tuesday, December 09, 2008 8:46 AM
To: Harsha, Priya
Cc: alsa-devel at alsa-project.org
Subject: Re: [alsa-devel] question on hardware mixing

On Sat, Dec 6, 2008 at 1:56 AM, Harsha, Priya <priya.harsha at intel.com> wrote:
> Hi,
> Thanks.
> A quick follow up question. In the trigger function - I see that from substream->runtime->private_data, voice specific parameters are extracted. How and can somehow user space fill in some private data to the driver so that driver can process voice in a different way and music in a different way?

What exactly do you want to do differently?


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