Hi Hans, On Tuesday 11 August 2015 15:59:35 Hans Verkuil wrote: > On 08/11/15 15:56, Laurent Pinchart wrote: > > Hijacking this e-mail thread a bit, would it make sense for the new > > vb2-core to support different memory allocation for different planes ? > > I'm foreseeing use cases for buffers that bundle image data with > > meta-data, where image data should be captured to a dma-buf imported > > buffer, but meta-data doesn't need to be shared. In that case it wouldn't > > be easy for userspace to find a dma-buf provider for the meta-data > > buffers in order to import all planes. Being able to use dma-buf import > > for the image plane(s) and mmap for the meta-data plane would be easier. > > Yes, that would make sense, but I'd postpone that until someone actually > needs it. I might need it soon. Looks like my cunning plan to let someone else implement it failed ;-) > The biggest hurdle would be how to adapt the V4L2 API to this, and not the > actual vb2 core code. Changes will be needed in both, but I agree that in-kernel changes should be less of a hassle. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
