Fake camera implementation
The code submitted here builds a camera.goldfish.so module that encapsulates a camera HAL.
The major components of the camera HAL implementation are:
* Generic HAL module implemented in emulated_camera_hal.cpp There is nothing much
to it: just exporting the required HAL header.
* EmulatedCameraFactory class that manages emulated cameras, and provides handling for
camera_module_methods_ methods. There is only one object of this class, that is statically
instantiated when camera.goldfish.so module is loaded.
* EmulatedCamera class that implements camera_device_ops_t API. Objects of this class are
instantiated during EmulatedCameraFactory construction, and they interact with objects
of EmulatedCameraDevice class to get frames.
* EmulatedCameraDevice class encapsulates an actual camera device. Objects of this class
are contained in EmulatedCameraDevice objects, and interact with them as required by the
API.
The fake camera implementation is shared between EmulatedFakeCamera, and EmulatedFakeCameraDevice
classes. They are pretty light. In fact, EmulatedFakeCamera is nothing more than just a
placeholder for EmulatedFakeCameraDevice instance, and EmulatedFakeCameraDevice does nothing
more, than just drawing a checker board with a bouncing square.
Other components / routines are minor: helpers, wrappers, etc. The code is heavily commented,
so there will be plenty of explanations between the lines.
Change-Id: I4463e14c255c6e3b1dcca17bed5f4efde32d9879
19 files changed