1 /* 2 * Copyright (C) 2020 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 #ifndef ANDROID_EXTERNAL_VIBRATION_UTILS_H 18 #define ANDROID_EXTERNAL_VIBRATION_UTILS_H 19 20 namespace android::os { 21 22 enum class HapticScale { 23 MUTE = -100, 24 VERY_LOW = -2, 25 LOW = -1, 26 NONE = 0, 27 HIGH = 1, 28 VERY_HIGH = 2, 29 }; 30 31 bool isValidHapticScale(HapticScale scale); 32 33 /* Scales the haptic data in given buffer using the selected HapticScale and ensuring no absolute 34 * value will be larger than the absolute of given limit. 35 * The limit will be ignored if it is NaN or zero. 36 */ 37 void scaleHapticData(float* buffer, size_t length, HapticScale scale, float limit); 38 39 } // namespace android::os 40 41 #endif // ANDROID_EXTERNAL_VIBRATION_UTILS_H 42