Hi Mauro, On Monday 23 January 2012 15:32:40 Mauro Carvalho Chehab wrote: > Em 23-01-2012 11:51, Tomasz Stanislawski escreveu: > > This patch adds extension to V4L2 api. It allow to export a mmap buffer > > as file descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer > > offset used by mmap and return a file descriptor on success. > > This requires more discussions. > > The usecase for this new API seems to replace the features previously > provided by the overlay mode. There, not only the buffer were exposed to > userspace, but some control were provided, in order to control the overlay > window. > > Please start a separate thread about that, explaining how are you imagining > that a V4L2 application would use such ioctl.
I think this is currently just a proof of concept. I'm sure Tomasz will discuss the V4L2 API extension on the linux-media list when the code will be stabilized. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
