I have a BT878 grabber. How is possible to set V4L for grabbing frames directly into a shared image XShmImage? I mean, now I have the V4L that grabs rgb frames into a mmap buffer (that isn't shared user memory, right?). Then I use memcpy from buffer to shmimage->data. I wanna to avoid this time consuming copy! - Grabbing frames directly in shmimage->data ? - Using DMA instead of memcpy? (but how?) thanks, Francesco