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      1 /*
      2  * Copyright (C) 2010 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 #pragma once
     18 
     19 #include <stdint.h>
     20 #include <sys/types.h>
     21 
     22 #include <utils/Errors.h>
     23 #include <utils/Flattenable.h>
     24 #include <utils/String8.h>
     25 #include <utils/Timers.h>
     26 
     27 // FIXME: including from android/ breaks layering, as libandroid ultimately depends on libsensors
     28 #include <android/sensor.h>
     29 
     30 #include <hardware/sensors.h>
     31 
     32 // ----------------------------------------------------------------------------
     33 // Concrete types for the NDK
     34 struct ASensor { };
     35 
     36 // ----------------------------------------------------------------------------
     37 namespace android {
     38 // ----------------------------------------------------------------------------
     39 
     40 class Parcel;
     41 
     42 // ----------------------------------------------------------------------------
     43 
     44 class Sensor : public ASensor, public LightFlattenable<Sensor>
     45 {
     46 public:
     47     enum {
     48         TYPE_ACCELEROMETER  = ASENSOR_TYPE_ACCELEROMETER,
     49         TYPE_MAGNETIC_FIELD = ASENSOR_TYPE_MAGNETIC_FIELD,
     50         TYPE_GYROSCOPE      = ASENSOR_TYPE_GYROSCOPE,
     51         TYPE_LIGHT          = ASENSOR_TYPE_LIGHT,
     52         TYPE_PROXIMITY      = ASENSOR_TYPE_PROXIMITY
     53     };
     54 
     55     struct uuid_t{
     56         union {
     57             uint8_t b[16];
     58             int64_t i64[2];
     59         };
     60         uuid_t(const uint8_t (&uuid)[16]) { memcpy(b, uuid, sizeof(b));}
     61         uuid_t() : b{0} {}
     62     };
     63 
     64     Sensor(const Sensor&) = default;
     65     Sensor& operator=(const Sensor&) = default;
     66 
     67     Sensor(const char * name = "");
     68     Sensor(struct sensor_t const* hwSensor, int halVersion = 0);
     69     Sensor(struct sensor_t const& hwSensor, const uuid_t& uuid, int halVersion = 0);
     70     ~Sensor();
     71 
     72     const String8& getName() const;
     73     const String8& getVendor() const;
     74     int32_t getHandle() const;
     75     int32_t getType() const;
     76     float getMinValue() const;
     77     float getMaxValue() const;
     78     float getResolution() const;
     79     float getPowerUsage() const;
     80     int32_t getMinDelay() const;
     81     nsecs_t getMinDelayNs() const;
     82     int32_t getVersion() const;
     83     uint32_t getFifoReservedEventCount() const;
     84     uint32_t getFifoMaxEventCount() const;
     85     const String8& getStringType() const;
     86     const String8& getRequiredPermission() const;
     87     bool isRequiredPermissionRuntime() const;
     88     int32_t getRequiredAppOp() const;
     89     int32_t getMaxDelay() const;
     90     uint32_t getFlags() const;
     91     bool isWakeUpSensor() const;
     92     bool isDynamicSensor() const;
     93     bool isDataInjectionSupported() const;
     94     bool hasAdditionalInfo() const;
     95     int32_t getHighestDirectReportRateLevel() const;
     96     bool isDirectChannelTypeSupported(int32_t sharedMemType) const;
     97     int32_t getReportingMode() const;
     98 
     99     // Note that after setId() has been called, getUuid() no longer
    100     // returns the UUID.
    101     // TODO(b/29547335): Remove getUuid(), add getUuidIndex(), and
    102     //     make sure setId() doesn't change the UuidIndex.
    103     const uuid_t& getUuid() const;
    104     int32_t getId() const;
    105     void setId(int32_t id);
    106 
    107     // LightFlattenable protocol
    108     inline bool isFixedSize() const { return false; }
    109     size_t getFlattenedSize() const;
    110     status_t flatten(void* buffer, size_t size) const;
    111     status_t unflatten(void const* buffer, size_t size);
    112 
    113 private:
    114     String8 mName;
    115     String8 mVendor;
    116     int32_t mHandle;
    117     int32_t mType;
    118     float   mMinValue;
    119     float   mMaxValue;
    120     float   mResolution;
    121     float   mPower;
    122     int32_t mMinDelay;
    123     int32_t mVersion;
    124     uint32_t mFifoReservedEventCount;
    125     uint32_t mFifoMaxEventCount;
    126     String8 mStringType;
    127     String8 mRequiredPermission;
    128     bool mRequiredPermissionRuntime = false;
    129     int32_t mRequiredAppOp;
    130     int32_t mMaxDelay;
    131     uint32_t mFlags;
    132     // TODO(b/29547335): Get rid of this field and replace with an index.
    133     //     The index will be into a separate global vector of UUIDs.
    134     //     Also add an mId field (and change flatten/unflatten appropriately).
    135     uuid_t  mUuid;
    136     static void flattenString8(void*& buffer, size_t& size, const String8& string8);
    137     static bool unflattenString8(void const*& buffer, size_t& size, String8& outputString8);
    138 };
    139 
    140 // ----------------------------------------------------------------------------
    141 }; // namespace android
    142