Hi Johan, > On May 7, 2008, at 14:18, Simon Pickering wrote: > > 1. DSP SBC task - In the roadmap there used to be (what I > > interpreted as) > > mention of implementing a DSP task to handle encoding audio > for A2DP > > use > > (where A2DP stands for Advanced Audio Distribution Protocol and is a > > Bluetooth protocol for sending data to Bluetooth stereo headsets > > [1]). SBC > > stands for subband codec, which is the default encoding method > > required by > > A2DP hardware. At the moment this encoding must be carried out by > > the ARM in > > software, but if the task could be offloaded to the DSP it would > > free up the > > ARM to do other things (such as decoding video better). > > > > This is really just a yes/no, are Nokia doing anything as if they > > are, I > > won't bother. > > AFAIK no. However, you might want to take a look at the recent > optimizations that have been made to the SBC codec that comes > as part > of BlueZ. Several of the optimizations specifically target > arm so the > value of pushing the encoding to the DSP side is less than it > was e.g. > one year ago (however it might still have enough value for > being worth > doing if you have the time and interest).
There is interest in doing it (and not just from me), but it is certainly worth doing some testing with the new version of BlueZ (does anyone know off hand when the SBC optimisations were pushed). With that said it would still be interesting to do so I've started work on it. Thanks, Simon _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
