Ok I thought that I do not have to dive into building kernel modules using a ubuntu port un the cubieboard...
I have about 25MB/sec from USB port to sd card and about 30MB/sec to SATA and successfully captured stk1160 video including audio today using the easycap driver. The problem is that only the first 2 secs have >20 frames/sec, after that it is about 3-5 frames/sec and it says video frame buffer full. I will try it with an sata medium, perhaps it is the sd-card slot which is the bottleneck. thanks for the tips with the kernel modules! Am 11.03.2014 um 15:52 schrieb Ezequiel Garcia <[email protected]>: > On Mar 11, Emilio López wrote: >>>> Do you have any idea? I definitely have a build in the modules directory... >> >> You most likely have a broken symlink there. You (or someone else) probably >> cross-built the kernel but didn't install the kernel headers there. You >> should install them to build stk1160 on the cubieboard2 (or cross build >> stk1160 as well). >> > > Yeah, I suggest that you ask on kernelnewbies or somewhere else > for instructions on how to build a kernel module. > >>> Emilio? Hans? Do you think the USB on the cubieboard2 can transfer >>> uncompressed (raw) video? >>> stk1160 needs as much as 20 MiB/sec. on isoc URBs and so far I haven't >>> seen many embedded systems >>> possible of that throughput... >> >> Should be ok I suppose; with a USB hard drive I get these unscientific >> results: >> > > USB hard drives most likely use block URBs, so those number are probably > not of importance. On the other side, maybe you have a USB web camera that > sends raw video. That would be a better test. > > André: > I really suggest that you confirm that you can get that much ISOC bandwidth > from your USB before wasting your time. You would be one of the first one > to report a successful stk1160 capture on this kind of devices. > -- > Ezequiel García, Free Electrons > Embedded Linux, Kernel and Android Engineering > http://free-electrons.com -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
