18 Apr
2015
18 Apr
'15
2:32 p.m.
On Mon, Apr 13, 2015 at 04:54:39AM +0000, Kuninori Morimoto wrote:
If my understanding is correct, the information which userland can get is setuped in .open
Yes.
But, DPCM cases, it cares only cpu information. why it doesn't care codec ?
Like I said before for most systems that do DPCM (and certainly the ones Liam's been working on) there's a DSP in place which rewrites all the data between the front end and the back end so the constraints of the CODEC aren't visible to the application layer.
I guess DPCM should be...
FE.hw = fe_cpu & fe_codec BE.hw = be_cpu & be_codec
Usually there's nothing "CODEC" visible at the front end for these systems.
And, if no FE constraint, final image will be
hw = FE.hw & BE.hw
Well, BE and CODEC but probably.