26de6e35a9
There are V4L2 devices that will output NV12 but will do so using one dma buffer. To support this, we need to add the same dma buffer twice but with a different offset for the chrominance plane. Also supports situations of 3 planes (e.g. YU12) inside a single dma buffer. Fixes: #712 Signed-off-by: Bram Stolk (b.stolk@gmail.com)