Lower exposure times than 100 us?

2016-10-31 Thread Michael Haardt
Hello, V4L2_CID_EXPOSURE_ABSOLUTE uses a 100 us resolution. Quite a few sensors offer lower exposures and more fine resolutions than that. Can the resolution be switched to e.g. 1 us, similar to how the tuner frequency may be specified in smaller steps if the driver implements the V4L2_TUNER_CAP_

Still images and v4l2?

2016-10-28 Thread Michael Haardt
I am currently developing a new image v4l2 sensor driver to acquire sequences of still images and wonder how to interface that to the v4l2 API. Currently, cameras are assumed to deliver an endless stream of images after being triggered internally with VIDIOC_STREAMON. If supported by the driver,