Android Open Source - AndroidRecording Camera Manager

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License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2013 Steelkiwi Development, Julia Zudikova, Viacheslav Tiagotenkov
 * /*from w  ww.  j a v a2s. c  om*/
 * 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 com.skd.androidrecording.video;

import java.io.IOException;

import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.Size;
import android.view.SurfaceHolder;

/*
 * Manages camera preview
 */

public class CameraManager {

  private Camera camera;
  private int camerasCount;
  private int defaultCameraID;
  private int cameraRotationDegree;
  private boolean isPreviewStarted = false;
  
  public CameraManager() {
    camerasCount = CameraHelper.getAvailableCamerasCount();
    defaultCameraID = CameraHelper.getDefaultCameraID();
  }
  
  public void openCamera() {
    if (camera != null) {
      releaseCamera();
    }
    camera = Camera.open(defaultCameraID);
  }
  
  public void releaseCamera() {
    if (camera != null) {
      camera.release();
      camera = null;
    }
  }
  
  public void switchCamera() {
    stopCameraPreview();
    
    defaultCameraID = (defaultCameraID + 1) % camerasCount;
    openCamera();
  }
  
  public void setupCameraAndStartPreview(SurfaceHolder sf, Size sz, int displayRotation) {
    stopCameraPreview();
    
    cameraRotationDegree = CameraHelper.setCameraDisplayOrientation(defaultCameraID, camera, displayRotation);
    
    Parameters param = camera.getParameters();
    param.setPreviewSize(sz.width, sz.height);
    camera.setParameters(param);
    
    if (setDisplay(sf)) {
      startCameraPreview();
    }  
  }
  
  public boolean setDisplay(SurfaceHolder sf) {
    try {
      camera.setPreviewDisplay(sf);
      return true;
    } catch (IOException e) {
      e.printStackTrace();
    }
    return false;
  }
  
  public void startCameraPreview() {
    camera.startPreview();
    isPreviewStarted = true;
  }
  
  public void stopCameraPreview() {
    if (isPreviewStarted && (camera != null)) {
      isPreviewStarted = false;
      camera.stopPreview();
    }
  }

  public Camera getCamera() {
    return camera;
  }
  
  public int getCameraDisplayOrientation() {
    return (CameraHelper.isCameraFacingBack(defaultCameraID)) ? cameraRotationDegree : cameraRotationDegree + 180;
  }
  
  public boolean hasMultipleCameras() {
    return (camerasCount > 1);
  }

  public boolean isPreviewStarted() {
    return isPreviewStarted;
  }
}

Java Source Code List