On Tue, Dec 30, 2003 at 11:50:22AM +0530, surya wrote: > Hi Michael and all, > I have been asking the question whether BT8x8 cards write video data > directly on to the framebuffer many times. But I got the answer from > your mail. If BT8x8 cards write video data directly on to the > framebuffer, how can we read the video data from "/dev/fb0" instead of > "/dev/video0" ? I am using Microwindows (www.microwindows.org) to > develop a tv viewer application like "Xawtv" which uses "/dev/video0" to > read video streams. I have planned to develop a tv viewer application > which reads the data from "/dev/fb0". PCI/AGP framebuffers are very slow for reading (as always PCI is designed to push not pull data). You can certainly drop video directly onto the frame buffer but you would probably need a DMA engine on the card to be able to capture it too
