hi, I have implemented support for V4L2_MEMORY_USERPTR buffers in gstreamers v4l2src [1]. This allows to request shared memory buffers from xvideo, capture into those and therefore save a memcpy. This works great with the v4l2 driver on our embedded device. When I was testing this on my desktop, I noticed that almost no driver seems to support it. I tested zc0301 and uvcvideo, but also grepped the kernel driver sources. It seems that gspca might support it, but I ave not confirmed it. Is there a technical reason for it, or is it simply not implemented? Thanks Stefan [1] http://bugzilla.gnome.org/show_bug.cgi?id=583890 -- 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
