Re: [Bluez-devel] Advanced Audio Distribution Profile (A2DP)

[Marcel Holtmann <marcel@holtmann.org>]

Hi Brad,

> i was hoping to get the timing problem hammered by using setitimer. 
> unfortunately, there still seems to be some dependency on the cpu speed 
> which is surprising to me. there's a place in the code where the time 
> period reported by libsbc is multiplied by 87/100. that 87 has to be 
> tweaked for different cpus :(

this is because the encoding itself takes some time. For that we need to
encode up to 6 SBC frames in advance.

> > You need to encode the SBC frames in advance and then use a timer for
> > sending them. I am working on a ALSA plugin that will do exactly this,
> > but I think that won't help you on your embedded platform.
> 
> i'm very excited to see this part. go, Marcel! and hopefully you can let 
> us see what this work looks like soon :)

Don't expect any updates this month, because I am too busy with other
things. I will release bluez-utils-2.18 without an updated version of
the plugin. However my plan is to have a basic A2DP plugin and also a
headset plugin working before I am going to the OLS.

Regards

Marcel




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