[alsa-devel] Support for Synchronous Audio

[Anoop Rajan]

Hi Clemens,

As I told we support synchronous multiroom audio, where in one speaker(master) streams the audio to others nodes(slave) over the network. Master speaker  future timestamps the audio and re-transmits to all other nodes based on a common reference clock maintained. Our stack implements the logic to present the audio synchronously to ALSA monitoring the stamped time.We are not using snd_pcm_link().

We use MT-7620 SOC from Mediatek.


Thanks,
Anoop 
________________________________________
From: Clemens Ladisch <clemens at ladisch.de>
Sent: 17 April 2015 14:37
To: Anoop Rajan; alsa-devel at alsa-project.org
Subject: Re: [alsa-devel] Support for Synchronous Audio

Anoop Rajan wrote:
> We have requirements to play synchronous multi-room audio with very
> minimal node to node latency(<100 us). [...] Though I make sure that
> I start the PCM  from user layer synchronously

How?  With snd_pcm_link()?

What hardware are you using?


Regards,
Clemens