1 /* 2 * Copyright (C) 2024 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 com.android.server.vibrator; 18 19 import android.hardware.vibrator.IVibrator; 20 import android.os.VibratorInfo; 21 import android.os.vibrator.BasicPwleSegment; 22 import android.os.vibrator.PwleSegment; 23 import android.os.vibrator.VibrationEffectSegment; 24 25 import java.util.List; 26 27 /** 28 * Validates {@link PwleSegment} and {@link BasicPwleSegment} instances to ensure they are 29 * compatible with the device's capabilities. 30 * 31 * <p>This validator performs the following checks: 32 * <ul> 33 * <li>For {@link PwleSegment}: 34 * <ul> 35 * <li>Verifies that the device supports {@link IVibrator#CAP_COMPOSE_PWLE_EFFECTS_V2}. 36 * <li>Verifies that each segment's start and end frequencies fall within the supported range. 37 * </ul> 38 * </li> 39 * <li>For {@link BasicPwleSegment}: 40 * <ul> 41 * <li>Verifies that the device supports {@link IVibrator#CAP_COMPOSE_PWLE_EFFECTS_V2}. 42 * </ul> 43 * </li> 44 * </ul> 45 */ 46 final class PwleSegmentsValidator implements VibrationSegmentsValidator { 47 48 @Override hasValidSegments(VibratorInfo info, List<VibrationEffectSegment> segments)49 public boolean hasValidSegments(VibratorInfo info, List<VibrationEffectSegment> segments) { 50 51 boolean hasPwleCapability = info.hasCapability(IVibrator.CAP_COMPOSE_PWLE_EFFECTS_V2); 52 float minFrequency = info.getFrequencyProfile().getMinFrequencyHz(); 53 float maxFrequency = info.getFrequencyProfile().getMaxFrequencyHz(); 54 55 for (VibrationEffectSegment segment : segments) { 56 if (segment instanceof BasicPwleSegment && !hasPwleCapability) { 57 return false; 58 } 59 if (segment instanceof PwleSegment pwleSegment) { 60 if (!hasPwleCapability || pwleSegment.getStartFrequencyHz() < minFrequency 61 || pwleSegment.getStartFrequencyHz() > maxFrequency 62 || pwleSegment.getEndFrequencyHz() < minFrequency 63 || pwleSegment.getEndFrequencyHz() > maxFrequency) { 64 return false; 65 } 66 } 67 } 68 69 return true; 70 } 71 } 72