Adding Flash to the Camera example

[tech.hi]

I am using Qt creator 4.8.2, on Debian buster.

I want to add flash to the existing camera example. Is there any method to add it ? If there is, how to do it ?

[arsinte_andrei]

When you say that you want to add flash .... what are you referring to??

• Do you want to make screen flashing?? (screen going completely white)

• Do you have an external flash device that you want to control??
  How is this flash connected?? what protocol does it use? is a device based on a microcontroller that you have access to reprogram??

[tech.hi]

I have camera with flash. So i would like to turn on the flash while capturing an image or recording a video.
It is i2c based
I found "QCameraExposure::FlashOn 0x4 Flash is On." in the docs but how do you use it?
How to add it to the Qt camera example is my question.

[arsinte_andrei]

@tech.hi
what camera you have (make and model)
you have to know the flash_on bit and to turn it on via i2c
you will need an i2c lib that is able to access the camera -via - how do you connect the camera to your device??
give more detail about the hardware that you are using and about your OS

[jsulm]

@tech.hi said in Adding Flash to the Camera example:

How to add it to the Qt camera example is my question.

Use https://doc.qt.io/qt-5/qcamera.html#exposure to get the exposure object and set that flag on it https://doc.qt.io/qt-5/qcameraexposure.html#flashMode-prop