About DSP API

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/baseband-devel@lists.osmocom.org/.

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




More information about the baseband-devel mailing list