1 /* 2 * Copyright (C) 2008 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 _HARDWARE_VIBRATOR_H 18 #define _HARDWARE_VIBRATOR_H 19 20 #if __cplusplus 21 extern "C" { 22 #endif 23 24 /** 25 * Return whether the device has a vibrator. 26 * 27 * @return 1 if a vibrator exists, 0 if it doesn't. 28 */ 29 int vibrator_exists(); 30 31 /** 32 * Turn on vibrator 33 * 34 * @param timeout_ms number of milliseconds to vibrate 35 * 36 * @return 0 if successful, -1 if error 37 */ 38 int vibrator_on(int timeout_ms); 39 40 /** 41 * Turn off vibrator 42 * 43 * @return 0 if successful, -1 if error 44 */ 45 int vibrator_off(); 46 47 #if __cplusplus 48 } // extern "C" 49 #endif 50 51 #endif // _HARDWARE_VIBRATOR_H 52