1 /* 2 * Copyright 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.hardware.cts.helpers; 18 19 import android.content.Context; 20 import android.hardware.Camera; 21 import android.hardware.camera2.CameraCharacteristics; 22 import android.hardware.camera2.CameraManager; 23 24 import java.util.Comparator; 25 26 /** 27 * Utility class containing helper functions for the Camera CTS tests. 28 */ 29 public class CameraUtils { 30 31 /** 32 * Returns {@code true} if this device only supports {@code LEGACY} mode operation in the 33 * Camera2 API for the given camera ID. 34 * 35 * @param context {@link Context} to access the {@link CameraManager} in. 36 * @param cameraId the ID of the camera device to check. 37 * @return {@code true} if this device only supports {@code LEGACY} mode. 38 */ 39 public static boolean isLegacyHAL(Context context, int cameraId) throws Exception { 40 CameraManager manager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE); 41 String cameraIdStr = manager.getCameraIdList()[cameraId]; 42 CameraCharacteristics characteristics = 43 manager.getCameraCharacteristics(cameraIdStr); 44 45 return characteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL) == 46 CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY; 47 } 48 49 /** 50 * Returns {@code true} if this device only supports {@code EXTERNAL} mode operation in the 51 * Camera2 API for the given camera ID. 52 * 53 * @param context {@link Context} to access the {@link CameraManager} in. 54 * @param cameraId the ID of the camera device to check. 55 * @return {@code true} if this device only supports {@code LEGACY} mode. 56 */ 57 public static boolean isExternal(Context context, int cameraId) throws Exception { 58 CameraManager manager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE); 59 String cameraIdStr = manager.getCameraIdList()[cameraId]; 60 CameraCharacteristics characteristics = 61 manager.getCameraCharacteristics(cameraIdStr); 62 63 return characteristics.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL) == 64 CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL; 65 } 66 67 /** 68 * Shared size comparison method used by size comparators. 69 * 70 * <p>Compares the number of pixels it covers.If two the areas of two sizes are same, compare 71 * the widths.</p> 72 */ 73 public static int compareSizes(int widthA, int heightA, int widthB, int heightB) { 74 long left = widthA * (long) heightA; 75 long right = widthB * (long) heightB; 76 if (left == right) { 77 left = widthA; 78 right = widthB; 79 } 80 return (left < right) ? -1 : (left > right ? 1 : 0); 81 } 82 83 /** 84 * Size comparator that compares the number of pixels it covers. 85 * 86 * <p>If two the areas of two sizes are same, compare the widths.</p> 87 */ 88 public static class LegacySizeComparator implements Comparator<Camera.Size> { 89 @Override 90 public int compare(Camera.Size lhs, Camera.Size rhs) { 91 return compareSizes(lhs.width, lhs.height, rhs.width, rhs.height); 92 } 93 } 94 95 } 96
