2011/2/8 Hadli, Manjunath <[email protected]>: > Jean-Philippe, > Among the Video related items you mentioned, pretty much everything is > planned to be supported. I will check back on the User Pointer I/O and get > back to you. > -Manju > Thank you for the information, this is very interesting. To be more precise, what is needed is a way to use the same buffer in acquisition (V4L2 API) and as input to an encoder or the previewer, and avoid any memcpy.
Currently (2.6.32 + DVSDK) , a buffer can be allocated using cmem, and it can be used within the V4L2 stack using user pointer IO. Is that possible using mmap ? If I remember correctly, allocation fails when working with multimegapixel input. > ________________________________________ > From: Nori, Sekhar > Sent: Tuesday, February 08, 2011 2:30 PM > To: jean-philippe francois; [email protected] > Cc: Hadli, Manjunath; Rajashekhara, Sudhakar > Subject: RE: Recent kernel for DM365 and status of the staging tree > > Hi jean-philippe, > > On Thu, Feb 03, 2011 at 15:02:36, jean-philippe francois wrote: >> 2011/2/3 jean-philippe francois <[email protected]>: >> > Hi, >> > >> > What is the status of the arago staging tree ? >> > It once was tracking the mainline kernel without much lag, but >> > it seems to be stuck at 2.6.34 > > Recently a 2.6.37 based baseline was pushed[1]. This is > work in progress and we are shooting for end-of-march > for a full fledged kernel release on DM365 and OMAP-L138/AM18x. > >> > >> > I am interested in : >> > - video capture >> Both bayer and YUV, using USERPTR IO >> >> > - single-shot previewer operation >> > - cmem, edma and all other DVSDK modules can build against it >> > - video display (optional) >> > - OSD (optional) > > cmem is not part of this kernel. This will surely become > available as and when a DVSDK release is available based on the > above mentioned kernel baseline. You can check on e2e.ti.com for > updates on DVSDK roadmap. > > EDMA has been verified already. > > For updates on the other items I am CCing Manju who has been > working on updating all the video related components. > > Thanks, > Sekhar > > [1] > http://arago-project.org/git/projects/?p=linux-davinci.git;a=shortlog;h=refs/heads/03.21.00.03 > >> > >> > I am currently using a 2.6.32 tree, but I would like to have a 2.6.35 >> > or older kernel, because I am interested >> > in the uvc gadget driver. >> > >> > What tree could be a good starting point for this ? >> > >> _______________________________________________ >> Davinci-linux-open-source mailing list >> [email protected] >> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source >> > > _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
