About DSP API

Sylvain Munaut 246tnt at gmail.com
Tue Dec 6 14:04:59 UTC 2011


> If I put the DSP in play mode (B_PLAY_UL) I can send some garbage on
> dsp_api.ndb->a_du_1 and the peer will play it, but if I peek the data at
> dsp_api.ndb->a_du_0, it's null filled.  If I revert the play mode, I can see
> data on dsp_api.ndb->a_du_0.

I guess the play ul both enables the tx from a_du_1 and also disables
the audio compression stuff ...
You can try to modify the content of a_du_0 at the time of the
interrupt without leaving but I'm not sure it'll work or if the dsp
will already have taken the data ...

Cheers,

    Sylvain




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