Camera Subsystem for Android

Hi Frinds,

Today I got a chance to explain the camera subsystem implement in the android to my colleagues.
Now, I'm just putting the overview of the Android camera subsystem here for our future reference.



CAMERA SUBSYSTEM FOR ANDROID
  • All Camera Activity will start from the user applications. These Applications will call the Android Framework API.
  • Android Framework API is just a wrapper to the JNI layer, since we can’t implement and include JNI in the all application.
  • JNI is a mediator between the JAVA API and NATIVE CAMERA API CPP files. It will just pass the calls from JAVA to CPP file.
  • This NATIVE CAMERA API will interact with the Camera Service to access the camera Hardware, via the binder.
  • This Camera Service started by media service at the start, will communicate with the HAL layer.
  • This Camera HAL will speak with the driver to get the work done in the Hardware.
  • Camera Driver is the kernel driver; it speaks with the Hardware to get the work done from it.
  • Hardware is the real camera in the device.

 

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Hi everyone,myself Alagappan...electronic and communication engg. student... living in madurai... interested in everything... want to achieve something great in my lifetime...

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