Android Open Source - AndroidRecording Camera Helper

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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 Tyagotenkov
 * /*w  ww  .  j  ava 2  s  .c o m*/
 * 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.util.List;

import android.annotation.SuppressLint;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.Size;
import android.os.Build;
import android.view.Surface;

/*
 * Represents camera management helper class.
 * Holds method for setting camera display orientation. 
 */

public class CameraHelper {

  public static int getAvailableCamerasCount() {
    return Camera.getNumberOfCameras();
  }
  
  public static int getDefaultCameraID() {
    int camerasCnt = getAvailableCamerasCount();
    int defaultCameraID = 0;
    CameraInfo cameraInfo = new CameraInfo();
        for (int i=0; i <camerasCnt; i++) {
            Camera.getCameraInfo(i, cameraInfo);
            if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
              defaultCameraID = i;
            }
        }
        return defaultCameraID;
  }
  
  public static boolean isCameraFacingBack(int cameraID) {
    CameraInfo cameraInfo = new CameraInfo();
    Camera.getCameraInfo(cameraID, cameraInfo);
    return (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK);
  }
  
  @SuppressLint("NewApi")
  public static List<Size> getCameraSupportedVideoSizes(android.hardware.Camera camera) {
    if ((Build.VERSION.SDK_INT >= 11) && (camera != null)) {
      return camera.getParameters().getSupportedVideoSizes();
    }
    else {
      return null;
    }
  }
  
  public static int setCameraDisplayOrientation(int cameraId, android.hardware.Camera camera, int displayRotation) {
    Camera.CameraInfo info = new Camera.CameraInfo();
    Camera.getCameraInfo(cameraId, info);
    int degrees = 0;
    switch (displayRotation) {
      case Surface.ROTATION_0:
        degrees = 0;
        break;
      case Surface.ROTATION_90:
        degrees = 90;
        break;
      case Surface.ROTATION_180:
        degrees = 180;
        break;
      case Surface.ROTATION_270:
        degrees = 270;
        break;
    }

    int camRotationDegree = 0;
    if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
      camRotationDegree = (info.orientation + degrees) % 360;
      camRotationDegree = (360 - camRotationDegree) % 360; // compensate the mirror
    } else { 
      camRotationDegree = (info.orientation - degrees + 360) % 360;
    }

    if (camera != null) {
      camera.setDisplayOrientation(camRotationDegree);
    }
    return camRotationDegree;
  }
}

Java Source Code List