1 2 package com.android.mediaframeworktest.integration; 3 4 import static org.junit.Assert.assertNotNull; 5 import static android.system.OsConstants.*; 6 7 import android.content.Context; 8 import android.content.pm.FeatureInfo; 9 import android.content.pm.PackageManager; 10 import android.hardware.ICameraService; 11 import android.os.IBinder; 12 import android.os.ServiceManager; 13 import android.util.Log; 14 15 public class CameraBinderTestUtils { 16 private final ICameraService mCameraService; 17 private int mGuessedNumCameras; 18 19 static final String CAMERA_SERVICE_BINDER_NAME = "media.camera"; 20 21 public static final int NO_ERROR = 0; 22 private final Context mContext; 23 24 public CameraBinderTestUtils(Context context) { 25 26 mContext = context; 27 28 guessNumCameras(); 29 30 IBinder cameraServiceBinder = ServiceManager 31 .getService(CameraBinderTestUtils.CAMERA_SERVICE_BINDER_NAME); 32 assertNotNull("Camera service IBinder should not be null", cameraServiceBinder); 33 34 this.mCameraService = ICameraService.Stub.asInterface(cameraServiceBinder); 35 assertNotNull("Camera service should not be null", getCameraService()); 36 } 37 38 private void guessNumCameras() { 39 40 /** 41 * Why do we need this? This way we have no dependency on getNumCameras 42 * actually working. On most systems there are only 0, 1, or 2 cameras, 43 * and this covers that 'usual case'. On other systems there might be 3+ 44 * cameras, but this will at least check the first 2. 45 */ 46 this.mGuessedNumCameras = 0; 47 48 // Front facing camera 49 if (CameraBinderTestUtils.isFeatureAvailable(mContext, 50 PackageManager.FEATURE_CAMERA_FRONT)) { 51 this.mGuessedNumCameras = getGuessedNumCameras() + 1; 52 } 53 54 // Back facing camera 55 if (CameraBinderTestUtils.isFeatureAvailable(mContext, 56 PackageManager.FEATURE_CAMERA)) { 57 this.mGuessedNumCameras = getGuessedNumCameras() + 1; 58 } 59 60 // Any facing camera 61 if (getGuessedNumCameras() == 0 62 && CameraBinderTestUtils.isFeatureAvailable(mContext, 63 PackageManager.FEATURE_CAMERA_ANY)) { 64 this.mGuessedNumCameras = getGuessedNumCameras() + 1; 65 } 66 67 Log.v(CameraBinderTest.TAG, "Guessing there are at least " + getGuessedNumCameras() 68 + " cameras"); 69 } 70 71 final static public boolean isFeatureAvailable(Context context, String feature) { 72 final PackageManager packageManager = context.getPackageManager(); 73 final FeatureInfo[] featuresList = packageManager.getSystemAvailableFeatures(); 74 for (FeatureInfo f : featuresList) { 75 if (f.name != null && f.name.equals(feature)) { 76 return true; 77 } 78 } 79 80 return false; 81 } 82 83 ICameraService getCameraService() { 84 return mCameraService; 85 } 86 87 int getGuessedNumCameras() { 88 return mGuessedNumCameras; 89 } 90 } 91
