CameraController.java

/*
 * Copyright 2016 Maxst, Inc. All Rights Reserved.
 */
package com.maxst.ar;

import android.graphics.SurfaceTexture;
import android.util.Log;

import java.util.List;

abstract class CameraController {

    private static final String TAG = CameraController.class.getSimpleName();

    static final int REQUEST_CAMERA_PERMISSION = 200;

    static CameraController create() {
        CameraController instance;
        //if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        //    Log.i(TAG, "camera 2.0");
        //    instance = new Camera2Controller();
        //} else
        {
            Log.i(TAG, "camera 1.0");
            instance = new Camera1Controller();
        }
        MaxstARJNI.CameraDevice_setCameraController(instance);
        return instance;
    }

    static void destroy() {
        MaxstARJNI.CameraDevice_releaseCameraController();
    }

    enum CameraState {
        None,
        Opening,
        Opened,
        Closing,
        Closed
    }

    SurfaceManager surfaceManager;
    //    CameraSurfaceView cameraSurfaceView;
    SurfaceTexture cameraSurfaceTexture;
    //    Handler cameraHandler;
    CameraState cameraState = CameraState.None;

    void setSurfaceManager(SurfaceManager surfaceManager) {
        this.surfaceManager = surfaceManager;
    }

//    void setCameraSurfaceView(CameraSurfaceView cameraSurfaceView) {
//        this.cameraSurfaceView = cameraSurfaceView;
//    }

    abstract int start(int cameraId, int width, int height);

    abstract void stop();

    abstract int getWidth();

    abstract int getHeight();

    abstract boolean setFocusMode(int focusMode);

    abstract boolean setFlashLightMode(boolean toggle);

    abstract boolean setAutoWhiteBalanceLock(boolean toggle);

    abstract Object [] getParamList();

    abstract boolean setParam(String key, String value);

    CameraSize getOptimalPreviewSize(List<CameraSize> sizes, int preferredWidth, int preferredHeight) {
        double minRegion = Double.MAX_VALUE;
        CameraSize optimalSize = null;
        for (CameraSize size : sizes) {
            Log.i(TAG, "" + size.width + "," + size.height);
            if (size.width <= preferredWidth && size.height <= preferredHeight) {
                if (Math.abs(size.width * size.height - preferredWidth * preferredHeight) <= minRegion) {
                    minRegion = Math.abs(size.width * size.height - preferredWidth * preferredHeight);
                    optimalSize = size;

                    Log.i(TAG, "Prefer Preview width  : " + preferredWidth + " height : " + preferredHeight);
                    Log.i(TAG, "Optimal Preview width  : " + optimalSize.width + " height : " + optimalSize.height);
                }
            }
        }

        return optimalSize;
    }

    static native void setNewCameraFrame(byte[] data, int length, int width, int height, int format);
}