OmniVision OV9655, Video4Linux, how to do SUBCAPTUR
I am currently trying to write C code for an embedded smart camera equipped with an XScal-PXA270 processor running Linux 2.6.9-dma270 and the OV9655 Image sensor.
I am asking help, my goal is capture a subfield of the whole image.
How to do it?
Is this function (VIDIOCSCAPTURE or something else?) supported by the Video4Linux driver for the OV9655 Image sensor ?
Currently I am able to reconfigure the OV9655 in order to change the whole image resolution, 640x480, 320x240 and even lower. The problem is I need do it dynamically, quickly, without close the camera and then reopen it every time I need sub-capture the image.
Thank you very much.