1 /* 2 * Copyright (C) 2014 Invensense, Inc. 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_SENSOR_BASE_H 18 #define ANDROID_SENSOR_BASE_H 19 20 #include <stdint.h> 21 #include <errno.h> 22 #include <sys/cdefs.h> 23 #include <sys/types.h> 24 25 #if defined ANDROID_JELLYBEAN || defined ANDROID_KITKAT 26 //build for Jellybean or KitKat 27 #define LOGV_IF ALOGV_IF 28 #define LOGE_IF ALOGE_IF 29 #define LOGI_IF ALOGI_IF 30 #define LOGI ALOGI 31 #define LOGE ALOGE 32 #define LOGV ALOGV 33 #define LOGW ALOGW 34 #else 35 //build for ICS or earlier version 36 #endif 37 38 #define FUNC_LOG \ 39 LOGV("%s", __PRETTY_FUNCTION__) 40 #define VFUNC_LOG \ 41 LOGV_IF(SensorBase::FUNC_ENTRY, \ 42 "Entering function '%s'", __PRETTY_FUNCTION__) 43 #define VHANDLER_LOG \ 44 LOGV_IF(SensorBase::HANDLER_ENTRY, \ 45 "Entering handler '%s'", __PRETTY_FUNCTION__) 46 #define CALL_MEMBER_FN(pobject, ptrToMember) ((pobject)->*(ptrToMember)) 47 48 #define MAX_SYSFS_NAME_LEN (100) 49 #define IIO_BUFFER_LENGTH (480) 50 51 /*****************************************************************************/ 52 53 struct sensors_event_t; 54 55 class SensorBase { 56 public: 57 /* Log enablers, each of these independent */ 58 static bool PROCESS_VERBOSE; /* process log messages */ 59 static bool EXTRA_VERBOSE; /* verbose log messages */ 60 static bool SYSFS_VERBOSE; /* log sysfs interactions as cat/echo for 61 repro purpose on a shell */ 62 /* Note that enabling this logs may affect performance */ 63 static bool FUNC_ENTRY; /* log entry in all one-time functions */ 64 static bool HANDLER_ENTRY; /* log entry in all handler functions */ 65 static bool ENG_VERBOSE; /* log a lot more info about the internals */ 66 static bool INPUT_DATA; /* log the data input from the events */ 67 static bool HANDLER_DATA; /* log the data fetched from the handlers */ 68 static bool DEBUG_BATCHING; /* log the data for debugging batching */ 69 70 protected: 71 const char *dev_name; 72 const char *data_name; 73 char input_name[PATH_MAX]; 74 int dev_fd; 75 int data_fd; 76 77 int openInput(const char* inputName); 78 static int64_t getTimestamp(); 79 static int64_t timevalToNano(timeval const& t) { 80 return t.tv_sec * 1000000000LL + t.tv_usec * 1000; 81 } 82 83 int open_device(); 84 int close_device(); 85 86 public: 87 SensorBase(const char* dev_name, const char* data_name); 88 virtual ~SensorBase(); 89 90 virtual int readEvents(sensors_event_t* data, int count) = 0; 91 int readSample(long *data, int64_t *timestamp); 92 int readRawSample(float *data, int64_t *timestamp); 93 virtual bool hasPendingEvents() const; 94 virtual int getFd() const; 95 virtual int setDelay(int32_t handle, int64_t ns); 96 virtual int enable(int32_t handle, int enabled); 97 virtual int query(int what, int* value); 98 virtual int batch(int handle, int flags, int64_t period_ns, int64_t timeout); 99 virtual int flush(int handle); 100 }; 101 102 /*****************************************************************************/ 103 104 #endif // ANDROID_SENSOR_BASE_H 105
