2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ANDROID_SENSOR_HELPERS_H
18 #define ANDROID_SENSOR_HELPERS_H
23 std::string mBasePath;
26 PathOps():mBasePath("") {};
27 PathOps(const char *basePath):mBasePath(basePath) {}
29 /* write data to base path (dir) + provided path */
30 int write(const std::string &path, const std::string &buf);
31 int write(const std::string &path, unsigned int data);
33 /* read data from base path (dir) + provided path */
34 int read(const std::string &path, char *buf, int len);
35 int read(const std::string &path, std::string &buf);
37 const char *basePath() { return mBasePath.c_str(); }
39 bool exists(const std::string &path);
43 inline unsigned int nsToMs(int64_t ns) { return ns/1000000; }