I have been working around camera2 android API to build my new application, but I've been facing some issues that I can't resolve reading the official docs or other questions here in SO or other sites.
I need to know the device camera sensitivity range, which can be obtained using the SENSOR_INFO_SENSITIVITY_RANGE from camera characteristics (as documented here). I can manage without issues when the device cannot offer this information, but I've encountered that this range is always the same for the same cameraId; but checking the value at the CaptureCallback for the SENSOR_SENSITIVITY parameter, there are many devices where the values never go even near of the range limit (for instance, in a Motorola One Vision it never returns more than 1427, when its theoretical value - the upper range value for SENSOR_INFO_SENSITIVITY_RANGE - is 3200)
I have made many tests, and have checked that the final value for it depends on scan resolution, frame rate, and many other things (for instance, limiting the FPS to 10 per second, the value for SENSOR_SENSITIVITY is never over 712).
Is there any method in order to get the real range for the current CameraCaptureSession or CaptureRequest? Or some way to translate to the original SENSOR_INFO_SENSITIVITY_RANGE the values returned at SENSOR_SENSITIVITY, in order to get a homogenous functioning function to analyze the values.
Any suggestion will be appreciated, as I'm absolutely blocked with this.