// Path: app/src/main/java/io/github/marktony/espresso/zxing/camera/open/OpenCameraInterface.java
// public class OpenCameraInterface {
// 
// 	private static final String TAG = OpenCameraInterface.class.getName();
// 
// 	/**
// 	 * Opens the requested camera with {@link Camera#open(int)}, if one exists.
// 	 * 
// 	 * @param cameraId
// 	 *            camera ID of the camera to use. A negative value means
// 	 *            "no preference"
// 	 * @return handle to {@link Camera} that was opened
// 	 */
// 	public static Camera open(int cameraId) {
// 
// 		int numCameras = Camera.getNumberOfCameras();
// 		if (numCameras == 0) {
// 			Log.w(TAG, "No cameras!");
// 			return null;
// 		}
// 
// 		boolean explicitRequest = cameraId >= 0;
// 
// 		if (!explicitRequest) {
// 			// Select a camera if no explicit camera requested
// 			int index = 0;
// 			while (index < numCameras) {
// 				Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
// 				Camera.getCameraInfo(index, cameraInfo);
// 				if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
// 					break;
// 				}
// 				index++;
// 			}
// 
// 			cameraId = index;
// 		}
// 
// 		Camera camera;
// 		if (cameraId < numCameras) {
// 			Log.i(TAG, "Opening camera #" + cameraId);
// 			camera = Camera.open(cameraId);
// 		} else {
// 			if (explicitRequest) {
// 				Log.w(TAG, "Requested camera does not exist: " + cameraId);
// 				camera = null;
// 			} else {
// 				Log.i(TAG, "No camera facing back; returning camera #0");
// 				camera = Camera.open(0);
// 			}
// 		}
// 
// 		return camera;
// 	}
// 
// 	/**
// 	 * Opens a rear-facing camera with {@link Camera#open(int)}, if one exists,
// 	 * or opens camera 0.
// 	 * 
// 	 * @return handle to {@link Camera} that was opened
// 	 */
// 	public static Camera open() {
// 		return open(-1);
// 	}
// 
// }


import java.io.IOException;
import android.content.Context;
import android.graphics.Point;
import android.hardware.Camera;
import android.hardware.Camera.Size;
import android.os.Handler;
import android.util.Log;
import android.view.SurfaceHolder;
import io.github.marktony.espresso.zxing.camera.open.OpenCameraInterface;
/*
 *  Copyright(c) 2017 lizhaotailang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.marktony.espresso.zxing.camera;



/**
 * This object wraps the Camera service object and expects to be the only one
 * talking to it. The implementation encapsulates the steps needed to take
 * preview-sized images, which are used for both preview and decoding.
 * 
 * @author dswitkin@google.com (Daniel Switkin)
 */
public class CameraManager {

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

	private final Context context;
	private final CameraConfigurationManager configManager;
	private Camera camera;
	private AutoFocusManager autoFocusManager;

	private boolean initialized;
	private boolean previewing;
	private int requestedCameraId = -1;
	/**
	 * Preview frames are delivered here, which we pass on to the registered
	 * handler. Make sure to clear the handler so it will only receive one
	 * message.
	 */
	private final PreviewCallback previewCallback;

// Path: app/src/main/java/io/github/marktony/espresso/zxing/camera/open/OpenCameraInterface.java
// public class OpenCameraInterface {
// 
// 	private static final String TAG = OpenCameraInterface.class.getName();
// 
// 	/**
// 	 * Opens the requested camera with {@link Camera#open(int)}, if one exists.
// 	 * 
// 	 * @param cameraId
// 	 *            camera ID of the camera to use. A negative value means
// 	 *            "no preference"
// 	 * @return handle to {@link Camera} that was opened
// 	 */
// 	public static Camera open(int cameraId) {
// 
// 		int numCameras = Camera.getNumberOfCameras();
// 		if (numCameras == 0) {
// 			Log.w(TAG, "No cameras!");
// 			return null;
// 		}
// 
// 		boolean explicitRequest = cameraId >= 0;
// 
// 		if (!explicitRequest) {
// 			// Select a camera if no explicit camera requested
// 			int index = 0;
// 			while (index < numCameras) {
// 				Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
// 				Camera.getCameraInfo(index, cameraInfo);
// 				if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
// 					break;
// 				}
// 				index++;
// 			}
// 
// 			cameraId = index;
// 		}
// 
// 		Camera camera;
// 		if (cameraId < numCameras) {
// 			Log.i(TAG, "Opening camera #" + cameraId);
// 			camera = Camera.open(cameraId);
// 		} else {
// 			if (explicitRequest) {
// 				Log.w(TAG, "Requested camera does not exist: " + cameraId);
// 				camera = null;
// 			} else {
// 				Log.i(TAG, "No camera facing back; returning camera #0");
// 				camera = Camera.open(0);
// 			}
// 		}
// 
// 		return camera;
// 	}
// 
// 	/**
// 	 * Opens a rear-facing camera with {@link Camera#open(int)}, if one exists,
// 	 * or opens camera 0.
// 	 * 
// 	 * @return handle to {@link Camera} that was opened
// 	 */
// 	public static Camera open() {
// 		return open(-1);
// 	}
// 
// }


// Path: app/src/main/java/io/github/marktony/espresso/zxing/camera/CameraManager.java
import java.io.IOException;
import android.content.Context;
import android.graphics.Point;
import android.hardware.Camera;
import android.hardware.Camera.Size;
import android.os.Handler;
import android.util.Log;
import android.view.SurfaceHolder;
import io.github.marktony.espresso.zxing.camera.open.OpenCameraInterface;

/*
 *  Copyright(c) 2017 lizhaotailang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.marktony.espresso.zxing.camera;



/**
 * This object wraps the Camera service object and expects to be the only one
 * talking to it. The implementation encapsulates the steps needed to take
 * preview-sized images, which are used for both preview and decoding.
 * 
 * @author dswitkin@google.com (Daniel Switkin)
 */
public class CameraManager {

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

	private final Context context;
	private final CameraConfigurationManager configManager;
	private Camera camera;
	private AutoFocusManager autoFocusManager;

	private boolean initialized;
	private boolean previewing;
	private int requestedCameraId = -1;
	/**
	 * Preview frames are delivered here, which we pass on to the registered
	 * handler. Make sure to clear the handler so it will only receive one
	 * message.
	 */
	private final PreviewCallback previewCallback;

	public CameraManager(Context context) {