| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // This file is based on the SMSLib library. |
| // |
| // SMSLib Sudden Motion Sensor Access Library |
| // Copyright (c) 2010 Suitable Systems |
| // All rights reserved. |
| // |
| // Developed by: Daniel Griscom |
| // Suitable Systems |
| // http://www.suitable.com |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the |
| // "Software"), to deal with the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to |
| // permit persons to whom the Software is furnished to do so, subject to |
| // the following conditions: |
| // |
| // - Redistributions of source code must retain the above copyright notice, |
| // this list of conditions and the following disclaimers. |
| // |
| // - Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimers in the |
| // documentation and/or other materials provided with the distribution. |
| // |
| // - Neither the names of Suitable Systems nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this Software without specific prior written permission. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| // IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR |
| // ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| // SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE. |
| // |
| // For more information about SMSLib, see |
| // <http://www.suitable.com/tools/smslib.html> |
| // or contact |
| // Daniel Griscom |
| // Suitable Systems |
| // 1 Centre Street, Suite 204 |
| // Wakefield, MA 01880 |
| // (781) 665-0053 |
| |
| #ifndef SUDDEN_MOTION_SENSOR_H_ |
| #define SUDDEN_MOTION_SENSOR_H_ |
| #pragma once |
| |
| #include <vector> |
| |
| #include <IOKit/IOKitLib.h> |
| |
| // Provides an easy-to-use interface to retrieve data |
| // from the MacBook family accelerometer. |
| class SuddenMotionSensor { |
| public: |
| static SuddenMotionSensor* Create(); |
| bool ReadSensorValues(float axes[3]); |
| ~SuddenMotionSensor(); |
| |
| private: |
| SuddenMotionSensor(); |
| bool Init(); |
| |
| // Extend the sign of an integer of size bytes to a 32-bit one. |
| static int ExtendSign(int value, size_t size); |
| |
| struct GenericMacbookSensor; |
| struct SensorDescriptor; |
| struct AxisData; |
| |
| // Generic sensor data and list of supported sensors. |
| static const GenericMacbookSensor kGenericSensor; |
| static const SensorDescriptor kSupportedSensors[]; |
| |
| // Local sensor if supported, else NULL. |
| const SensorDescriptor* sensor_; |
| |
| // IOKit connection to the local sensor. |
| io_connect_t io_connection_; |
| |
| // Input memory used for sensor I/O. |
| std::vector<char> input_record_; |
| |
| // Output memory used for sensor I/O. |
| std::vector<char> output_record_; |
| }; |
| |
| #endif // SUDDEN_MOTION_SENSOR_H_ |