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Android

CameraService

Top / CameraService

実装

• AOSP/frameworks/av/services/camera/libcameraservice/CameraService.cpp
• ICameraService cameraService = CameraManagerGlobal?.get().getCameraService();

C++のとJavaのがある

C++

メモ

• android.hardware.camera2.CameraManagerでラップされている(AIDLを用いてICameraService経由で呼ばれる)

定義

• class CameraService : public BinderService<CameraService>, BnCameraService?, public IBinder::DeathRecipient?, public camera_module_callbacks_t?

関数

• CameraService::getCameraInfo
• CameraService::connectDevice?
• CameraService::connectHelper
• CameraService::getCameraCharacteristics
• CameraService::addListener?
• CameraService::supportsCameraApi?
• CameraService::checkCameraCapabilities?
• CameraService::getCameraState?
• CameraService::makeClient
• CameraService::updateStatus?

mediaserver

• ～Android 6.0
• 起動の指定
  • AOSP/system/core/rootdir/init.rc
  • Android/init.rc

    service media /system/bin/mediaserver

• CameraService::instantiate();

cameraserver

• Android 7.0～
• 起動の指定
  • AOSP/frameworks/av/camera/cameraserver/cameraserver.rc

    service cameraserver /system/bin/cameraserver

• CameraService::instantiate();
  • AOSP/frameworks/av/services/camera/libcameraservice/CameraService.h?
  • AOSP/frameworks/av/services/camera/libcameraservice/CameraService.cpp

メモ

• CameraService::getCameraCharacteristics

Java

• Android 6.0～
• SystemServer.startOtherServicesでcom.android.server.camera.CameraServiceを起動
• AOSP/frameworks/base/services/core/java/com/android/server/camera/CameraService.java
• https://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-camera

取得

• android.hardware.camera2.CameraManager
  • CameraManagerGlobal.getCameraService
  • return ICameraService
    • AOSP/frameworks/av/camera/aidl/android/hardware/ICameraService.aidl

CameraService/処理の流れ