Class CameraEngine

camera/basic/src/main/cpp/camera_engine.h:32–73

* basic CameraAppEngine */

 * basic CameraAppEngine
 */
class CameraEngine {
 public:
  explicit CameraEngine(android_app* app);
  ~CameraEngine();

  // Interfaces to android application framework
  struct android_app* AndroidApp(void) const;
  void OnAppInitWindow(void);
  void DrawFrame(void);
  void OnAppConfigChange(void);
  void OnAppTermWindow(void);

  // Native Window handlers
  int32_t GetSavedNativeWinWidth(void);
  int32_t GetSavedNativeWinHeight(void);
  int32_t GetSavedNativeWinFormat(void);
  void SaveNativeWinRes(int32_t w, int32_t h, int32_t format);

  // UI handlers
  void RequestCameraPermission();
  void OnCameraPermission(jboolean granted);
  void EnableUI(void);
  void OnTakePhoto(void);
  void OnCameraParameterChanged(int32_t code, int64_t val);

  // Manage NDKCamera Object
  void CreateCamera(void);
  void DeleteCamera(void);

 private:
  void OnPhotoTaken(const char* fileName);
  int GetDisplayRotation(void);

  struct android_app* app_;
  ImageFormat savedNativeWinRes_;
  bool cameraGranted_;
  int rotation_;
  volatile bool cameraReady_;
  NDKCamera* camera_;
  ImageReader* yuvReader_;
  ImageReader* jpgReader_;
};

/**
 * retrieve global singleton CameraEngine instance