linux-media, I previously posted this on the video4linux-list, but linux-media seems a more appropriate place.
I am developing on the OMAP3 system using a micron/aptina mt9p031 5-megapixel imager. This CMOs imager supports full image capture (2592x1944 pixels) or you can capture subregions using skipping and binning. We have proven both capabilities, but would like to be able to capture both VGA sized video and still images without using separate drivers. So far, I have not found any support for capturing large images and video through a single driver interface. Does such a capability exist within v4l2? One possible way to solve the problem is to allocate N buffers of the full 5-megapixel size (they end up being 10-MB for each buffer since I'm using 16-bits per pixel), and then using a small portion of that for video. This is less desirable since when I'm capturing video, I only need 640x480 size buffers, and I should only need one snapshot buffer at a time (I'm not streaming them in, just take a snapshot and go back to live video capture). Is there a way to allocate a side-buffer for the 5-megapixel image and also allocate "normal" sized buffers for video within the same driver? Any recommendations on how to accomplish such a thing? I would think that camera-phones using linux would have run up against this. Thanks, Neil Johnson -- 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
