Return list of cameras

Signed-off-by: Umair Khan <[email protected]>

Author: omerjerk

src/in/omerjerk/processing/video/android/Capture.java

@@ -1,8 +1,51 @@
 package in.omerjerk.processing.video.android;
 
+import java.util.ArrayList;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.hardware.Camera;
+import processing.core.PApplet;
 import processing.core.PConstants;
 import processing.core.PImage;
 
+@SuppressWarnings("deprecation")
 public class Capture extends PImage implements PConstants {
 
+	private static Context context;
+	
+	private static ArrayList<String> camerasList;
+	
+	private static final String KEY_FRONT_CAMERA = "front-camera-%d";
+	private static final String KEY_BACK_CAMERA = "back-camera-%d";
+	
+	public static String[] list() {
+		ensureContext();
+		if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
+			int nOfCameras = Camera.getNumberOfCameras();
+			for (int i = 0; i < nOfCameras; ++i) {
+				Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
+				Camera.getCameraInfo(i, cameraInfo);
+				if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
+					camerasList.add(String.format(KEY_FRONT_CAMERA, i));
+				} else {
+					//Back Camera
+					camerasList.add(String.format(KEY_BACK_CAMERA, i));
+				}
+			}
+			String[] array = new String[nOfCameras];
+			camerasList.toArray(array);
+			return array;
+		}
+		return null;
+	}
+	
+	private static void ensureContext() {
+		if (context == null) {
+			context = PApplet.getInstance();
+			if (context == null) {
+				throw new NullPointerException("null context");
+			}
+		}
+	}
 }