Code structure for Android camera

Code structure for Android camera

The camera code for Android is mainly in the following directories:
The Java part of the camera
packages/apps/camera/. Where Camera.java is the main implementation of the file. This part of the content compiled into a target is camera.apk
Com.android.camera This package, several of the main class files are as follows:
PhotoViewer:GalleryPicker.java (all picture sets)--->imagegallery.java (a list of pictures under a folder)--->viewimage.java (see a specific picture)
VideoPlayer:GalleryPicker.java (All video sets)--->movieview.java (see a certain video)
Camera:Camera.java (Camera framing and photo shoot)
VideoCamera:VideoCamera.java (Videocamera framing and photographing)

The part of the camera framework for upper application calls

Base/core/java/android/hardware/camera.java

This part of the target is Framework.jar.

The JNI part of camera
Frameworks/base/core/jni/android_hardware_camera.cpp
This part of the content compiled into a target is libandroid_runtime.so.

Camera UI Library Section
Frameworks/base/libs/camera
This part of the content is compiled into a library libcamera_client.so.

Camera Service Section
Frameworks/base/services/camera/libcameraservic
This part of the content is compiled into a library libcameraservice.so.

Camera HAL Layer Section
Hardware/msm7k/libcamera
Or
Vendor/qcom/android-open/libcamera2
In order to achieve a specific feature of the camera, a hardware-related camera library is required at the HAL layer (for example, by calling the video-for Linux driver and the JPEG coding program, or directly using a private library implemented by each chip vendor, such as Qualcomm implementation of the libcamera.so and libqcamera.so), the implementation of the Camerahardwareinterface specified interface, to invoke the relevant library, driver-related driver, the implementation of camera hardware operations. This library will be invoked by the Camera Service library libcameraservice.so.