1 /*
2  * Copyright (C) 2019 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 #ifndef ANDROID_HARDWARE_VIBRATOR_TEST_UTILS_H
17 #define ANDROID_HARDWARE_VIBRATOR_TEST_UTILS_H
18 
19 #include <cmath>
20 
21 #include "types.h"
22 
toScale(uint8_t target,uint8_t maximum)23 static inline EffectScale toScale(uint8_t target, uint8_t maximum) {
24     return std::round((-20 * std::log10(target / static_cast<float>(maximum))) / 0.125f);
25 }
26 
levelToScale(EffectLevel level)27 static inline EffectScale levelToScale(EffectLevel level) {
28     return toScale(level, 100);
29 }
30 
amplitudeToScale(EffectAmplitude amplitude)31 static inline EffectScale amplitudeToScale(EffectAmplitude amplitude) {
32     return toScale(amplitude, UINT8_MAX);
33 }
34 
msToCycles(EffectDuration ms)35 static inline uint32_t msToCycles(EffectDuration ms) {
36     return ms * 48;
37 }
38 
39 #endif  // ANDROID_HARDWARE_VIBRATOR_TEST_UTILS_H
40