Hi, ov7670 and ov7675 sensors have the possibility of querying the average value of the Y/Cb components of the image reading a register. This could be useful for applications such as calise [1]. This program grabs frames from a video camera, calculates the average brightness and then adjusts screen's backlight accordingly. If the user could query the value of this register t in cameras that support it we could save a lot of processing effort. The first idea that came into my mind was to define a new v4l2-ctrl for this but I'm not sure if it is a common feature in other sensors. Is it worth it to define a new v4l2-ctrl for this or should I use a private ctrl instead? Regards. [1] http://calise.sourceforge.net/wordpress/ -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
