1 2 package com.android.mediaframeworktest.integration; 3 4 import static org.junit.Assert.assertNotNull; 5 6 import android.content.Context; 7 import android.content.pm.FeatureInfo; 8 import android.content.pm.PackageManager; 9 import android.hardware.ICameraService; 10 import android.os.IBinder; 11 import android.os.ServiceManager; 12 import android.util.Log; 13 14 public class CameraBinderTestUtils { 15 private final ICameraService mCameraService; 16 private int mGuessedNumCameras; 17 18 static final String CAMERA_SERVICE_BINDER_NAME = "media.camera"; 19 20 protected static final int USE_CALLING_UID = -1; 21 protected static final int BAD_VALUE = -22; 22 protected static final int INVALID_OPERATION = -38; 23 protected static final int ALREADY_EXISTS = -17; 24 public static final int NO_ERROR = 0; 25 public static final int EOPNOTSUPP = -95; 26 private final Context mContext; 27 28 public CameraBinderTestUtils(Context context) { 29 30 mContext = context; 31 32 guessNumCameras(); 33 34 IBinder cameraServiceBinder = ServiceManager 35 .getService(CameraBinderTestUtils.CAMERA_SERVICE_BINDER_NAME); 36 assertNotNull("Camera service IBinder should not be null", cameraServiceBinder); 37 38 this.mCameraService = ICameraService.Stub.asInterface(cameraServiceBinder); 39 assertNotNull("Camera service should not be null", getCameraService()); 40 } 41 42 private void guessNumCameras() { 43 44 /** 45 * Why do we need this? This way we have no dependency on getNumCameras 46 * actually working. On most systems there are only 0, 1, or 2 cameras, 47 * and this covers that 'usual case'. On other systems there might be 3+ 48 * cameras, but this will at least check the first 2. 49 */ 50 this.mGuessedNumCameras = 0; 51 52 // Front facing camera 53 if (CameraBinderTestUtils.isFeatureAvailable(mContext, 54 PackageManager.FEATURE_CAMERA_FRONT)) { 55 this.mGuessedNumCameras = getGuessedNumCameras() + 1; 56 } 57 58 // Back facing camera 59 if (CameraBinderTestUtils.isFeatureAvailable(mContext, 60 PackageManager.FEATURE_CAMERA)) { 61 this.mGuessedNumCameras = getGuessedNumCameras() + 1; 62 } 63 64 // Any facing camera 65 if (getGuessedNumCameras() == 0 66 && CameraBinderTestUtils.isFeatureAvailable(mContext, 67 PackageManager.FEATURE_CAMERA_ANY)) { 68 this.mGuessedNumCameras = getGuessedNumCameras() + 1; 69 } 70 71 Log.v(CameraBinderTest.TAG, "Guessing there are at least " + getGuessedNumCameras() 72 + " cameras"); 73 } 74 75 final static public boolean isFeatureAvailable(Context context, String feature) { 76 final PackageManager packageManager = context.getPackageManager(); 77 final FeatureInfo[] featuresList = packageManager.getSystemAvailableFeatures(); 78 for (FeatureInfo f : featuresList) { 79 if (f.name != null && f.name.equals(feature)) { 80 return true; 81 } 82 } 83 84 return false; 85 } 86 87 ICameraService getCameraService() { 88 return mCameraService; 89 } 90 91 int getGuessedNumCameras() { 92 return mGuessedNumCameras; 93 } 94 } 95
