Files
android_device_google_conte…/sensorhal/sensors.cpp
Peng Xu 2b7c19d0bc Fix the bug that causes setDelay not working
Fix the bug that causes setDelay not working. Many native sensor
apps, such as camera EIS, still use this API.

Bug: b/27790706
Change-Id: Iaf7eeb3311a2148ca556d27dbd117e1992715644
2016-03-22 21:04:23 -07:00

750 lines
28 KiB
C++

/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "sensors"
// #defined LOG_NDEBUG 1
#include <utils/Log.h>
#include "sensors.h"
#include "hubconnection.h"
#include <errno.h>
#include <math.h>
#include <media/stagefright/foundation/ADebug.h>
#include <string.h>
using namespace android;
static const int kVersion = 1;
static const float kMinSampleRateHzAccel = 6.250f;
static const float kMaxSampleRateHzAccel = 200.0f;
static const float kMinSampleRateHzGyro = 6.250f;
static const float kMaxSampleRateHzGyro = 200.0f;
static const float kMinSampleRateHzMag = 3.125f;
static const float kMaxSampleRateHzMag = 50.0f;
static const float kMinSampleRateHzPolling = 0.1f;
static const float kMaxSampleRateHzPolling = 25.0f;
static const float kMinSampleRateHzPressure = 0.1f;
static const float kMaxSampleRateHzPressure = 10.0f;
static const float kMinSampleRateHzTemperature = kMinSampleRateHzPolling;
static const float kMaxSampleRateHzTemperature = kMaxSampleRateHzPolling;
static const float kMinSampleRateHzProximity = kMinSampleRateHzPolling;
static const float kMaxSampleRateHzProximity = 5.0;
static const float kMinSampleRateHzLight = kMinSampleRateHzPolling;
static const float kMaxSampleRateHzLight = 5.0;
static const float kMinSampleRateHzOrientation = 12.5f;
static const float kMaxSampleRateHzOrientation = 200.0f;
static const int kMaxOneAxisEventCount = 9000;
static const int kMaxThreeAxisEventCount = 4500;
static const char SENSOR_STRING_TYPE_INTERNAL_TEMPERATURE[] =
"com.google.sensor.internal_temperature";
static const char SENSOR_STRING_TYPE_SYNC[] =
"com.google.sensor.sync";
static const char SENSOR_STRING_TYPE_DOUBLE_TWIST[] =
"com.google.sensor.double_twist";
static const char SENSOR_STRING_TYPE_DOUBLE_TAP[] =
"com.google.sensor.double_tap";
static struct sensor_t kSensorList[] = {
{
// MUST BE THE FIRST ENTRY! The name/vendor will be patched once we
// get feedback from the hub on which part is installed.
"Unknown Proximity Sensor",
"Unknown",
kVersion,
COMMS_SENSOR_PROXIMITY,
SENSOR_TYPE_PROXIMITY,
5.0f, // maxRange (cm)
1.0f, // resolution (cm)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzProximity), // minDelay
300, // XXX fifoReservedEventCount
kMaxOneAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_PROXIMITY,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzProximity), // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
{
"Unknown Light Sensor",
"Unknown",
kVersion,
COMMS_SENSOR_LIGHT,
SENSOR_TYPE_LIGHT,
43000.0f, // maxRange (lx)
10.0f, // XXX resolution (lx)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzLight), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_LIGHT,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzLight), // maxDelay
SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
{
"BMI160 accelerometer",
"Bosch",
kVersion,
COMMS_SENSOR_ACCEL,
SENSOR_TYPE_ACCELEROMETER,
GRAVITY_EARTH * 8.0f, // maxRange
GRAVITY_EARTH * 8.0f / 32768.0f, // resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzAccel), // minDelay
3000, // XXX fifoReservedEventCount
kMaxThreeAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_ACCELEROMETER,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzAccel), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMI160 gyroscope",
"Bosch",
kVersion,
COMMS_SENSOR_GYRO,
SENSOR_TYPE_GYROSCOPE,
2000.0f * M_PI / 180.0f, // maxRange
2000.0f * M_PI / (180.0f * 32768.0f), // resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzGyro), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GYROSCOPE,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzGyro), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMI160 gyroscope (uncalibrated)",
"Bosch",
kVersion,
COMMS_SENSOR_GYRO_UNCALIBRATED,
SENSOR_TYPE_GYROSCOPE_UNCALIBRATED,
2000.0f * M_PI / 180.0f, // maxRange
2000.0f * M_PI / (180.0f * 32768.0f), // resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzGyro), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzGyro), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMM150 magnetometer",
"Bosch",
kVersion,
COMMS_SENSOR_MAG,
SENSOR_TYPE_MAGNETIC_FIELD,
1300.0f, // XXX maxRange
0.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzMag), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_MAGNETIC_FIELD,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzMag), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMM150 magnetometer (uncalibrated)",
"Bosch",
kVersion,
COMMS_SENSOR_MAG_UNCALIBRATED,
SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED,
1300.0f, // XXX maxRange
0.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzMag), // minDelay
600, // XXX fifoReservedEventCount
kMaxThreeAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_MAGNETIC_FIELD_UNCALIBRATED,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzMag), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMP280 pressure",
"Bosch",
kVersion,
COMMS_SENSOR_PRESSURE,
SENSOR_TYPE_PRESSURE,
1100.0f, // maxRange (hPa)
0.005f, // resolution (hPa)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzPressure), // minDelay
300, // XXX fifoReservedEventCount
kMaxOneAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_PRESSURE,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzPressure), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMP280 temperature",
"Bosch",
kVersion,
COMMS_SENSOR_TEMPERATURE,
SENSOR_TYPE_INTERNAL_TEMPERATURE,
85.0f, // maxRange (degC)
0.01, // resolution (degC)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzTemperature), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_INTERNAL_TEMPERATURE,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzTemperature), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Orientation",
"Google",
kVersion,
COMMS_SENSOR_ORIENTATION,
SENSOR_TYPE_ORIENTATION,
360.0f, // maxRange (deg)
1.0f, // XXX resolution (deg)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_ORIENTATION,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMI160 Step detector",
"Bosch",
kVersion,
COMMS_SENSOR_STEP_DETECTOR,
SENSOR_TYPE_STEP_DETECTOR,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
0, // minDelay
100, // XXX fifoReservedEventCount
kMaxOneAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_STEP_DETECTOR,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"BMI160 Step counter",
"Bosch",
kVersion,
COMMS_SENSOR_STEP_COUNTER,
SENSOR_TYPE_STEP_COUNTER,
1.0f, // XXX maxRange
1.0f, // resolution
0.0f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_STEP_COUNTER,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
{
"Significant motion",
"Google",
kVersion,
COMMS_SENSOR_SIGNIFICANT_MOTION,
SENSOR_TYPE_SIGNIFICANT_MOTION,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
-1, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_SIGNIFICANT_MOTION,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ONE_SHOT_MODE,
{ NULL, NULL }
},
{
"Gravity",
"Google",
kVersion,
COMMS_SENSOR_GRAVITY,
SENSOR_TYPE_GRAVITY,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GRAVITY,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Linear Acceleration",
"Google",
kVersion,
COMMS_SENSOR_LINEAR_ACCEL,
SENSOR_TYPE_LINEAR_ACCELERATION,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_LINEAR_ACCELERATION,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Rotation Vector",
"Google",
kVersion,
COMMS_SENSOR_ROTATION_VECTOR,
SENSOR_TYPE_ROTATION_VECTOR,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_ROTATION_VECTOR,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Geomagnetic Rotation Vector",
"Google",
kVersion,
COMMS_SENSOR_GEO_MAG,
SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Game Rotation Vector",
"Google",
kVersion,
COMMS_SENSOR_GAME_ROTATION_VECTOR,
SENSOR_TYPE_GAME_ROTATION_VECTOR,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
300, // XXX fifoReservedEventCount
kMaxThreeAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GAME_ROTATION_VECTOR,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Tilt Detector",
"Google",
kVersion,
COMMS_SENSOR_TILT,
SENSOR_TYPE_TILT_DETECTOR,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_TILT_DETECTOR,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Pickup Gesture",
"Google",
kVersion,
COMMS_SENSOR_GESTURE,
SENSOR_TYPE_PICK_UP_GESTURE,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
-1, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_PICK_UP_GESTURE,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ONE_SHOT_MODE,
{ NULL, NULL }
},
{
"Sensors Sync",
"Google",
kVersion,
COMMS_SENSOR_SYNC,
SENSOR_TYPE_SYNC,
1.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_SYNC,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Double Twist",
"Google",
kVersion,
COMMS_SENSOR_DOUBLE_TWIST,
SENSOR_TYPE_DOUBLE_TWIST,
1.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_DOUBLE_TWIST,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Double Tap",
"Google",
kVersion,
COMMS_SENSOR_DOUBLE_TAP,
SENSOR_TYPE_DOUBLE_TAP,
1.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_DOUBLE_TAP,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Device Orientation",
"Google",
kVersion,
COMMS_SENSOR_WINDOW_ORIENTATION,
SENSOR_TYPE_DEVICE_ORIENTATION,
3.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_DEVICE_ORIENTATION,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
};
////////////////////////////////////////////////////////////////////////////////
SensorContext::SensorContext(const struct hw_module_t *module)
: mHubConnection(HubConnection::getInstance()), mHubAlive(true) {
memset(&device, 0, sizeof(device));
device.common.tag = HARDWARE_DEVICE_TAG;
device.common.version = SENSORS_DEVICE_API_VERSION_1_3;
device.common.module = const_cast<hw_module_t *>(module);
device.common.close = CloseWrapper;
device.activate = ActivateWrapper;
device.setDelay = SetDelayWrapper;
device.poll = PollWrapper;
device.batch = BatchWrapper;
device.flush = FlushWrapper;
if (mHubConnection->initCheck() != (status_t)OK) {
mHubAlive = false;
} else {
if (mHubConnection->getAliveCheck() != (status_t)OK) {
mHubAlive = false;
} else {
HubConnection::ProximitySensorType type;
mHubConnection->getProximitySensorType(&type);
if (type == HubConnection::PROXIMITY_ROHM) {
kSensorList[0].name = "RPR0521 proximity";
kSensorList[0].vendor = "Rohm";
kSensorList[1].name = "RPR0521 light";
kSensorList[1].vendor = "Rohm";
} else if (type == HubConnection::PROXIMITY_AMS) {
kSensorList[0].name = "TMD27723 proximity";
kSensorList[0].vendor = "AMS";
kSensorList[1].name = "TMD27723 light";
kSensorList[1].vendor = "AMS";
kSensorList[1].maxRange = 10000;
}
}
}
}
SensorContext::~SensorContext() {
}
int SensorContext::close() {
ALOGI("close");
delete this;
return 0;
}
int SensorContext::activate(int handle, int enabled) {
ALOGI("activate");
mHubConnection->queueActivate(handle, enabled);
return 0;
}
int SensorContext::setDelay(int handle, int64_t delayNs) {
ALOGI("setDelay");
// clamp sample rate based on minDelay and maxDelay defined in kSensorList
int64_t delayNsClamped = delayNs;
int num_sensors = sizeof(kSensorList) / sizeof(sensor_t);
for (int i = 0; i < num_sensors; i++) {
sensor_t sensor = kSensorList[i];
if (sensor.handle != handle) {
continue;
}
if ((sensor.flags & REPORTING_MODE_MASK) == SENSOR_FLAG_CONTINUOUS_MODE) {
if ((delayNs/1000) < sensor.minDelay) {
delayNsClamped = sensor.minDelay * 1000;
} else if ((delayNs/1000) > sensor.maxDelay) {
delayNsClamped = sensor.maxDelay * 1000;
}
}
break;
}
mHubConnection->queueSetDelay(handle, delayNsClamped);
return 0;
}
int SensorContext::poll(sensors_event_t *data, int count) {
ALOGV("poll");
ssize_t n = mHubConnection->read(data, count);
if (n < 0) {
return -1;
}
return n;
}
int SensorContext::batch(
int handle,
int flags,
int64_t sampling_period_ns,
int64_t max_report_latency_ns) {
ALOGI("batch");
// clamp sample rate based on minDelay and maxDelay defined in kSensorList
int64_t sampling_period_ns_clamped = sampling_period_ns;
int num_sensors = sizeof(kSensorList) / sizeof(sensor_t);
for (int i = 0; i < num_sensors; i++) {
sensor_t sensor = kSensorList[i];
if (sensor.handle != handle) {
continue;
}
if ((sensor.flags & REPORTING_MODE_MASK) == SENSOR_FLAG_CONTINUOUS_MODE) {
if ((sampling_period_ns/1000) < sensor.minDelay) {
sampling_period_ns_clamped = sensor.minDelay * 1000;
} else if ((sampling_period_ns/1000) > sensor.maxDelay) {
sampling_period_ns_clamped = sensor.maxDelay * 1000;
}
}
break;
}
mHubConnection->queueBatch(
handle, flags, sampling_period_ns_clamped, max_report_latency_ns);
return 0;
}
int SensorContext::flush(int handle) {
ALOGI("flush");
mHubConnection->queueFlush(handle);
return 0;
}
// static
int SensorContext::CloseWrapper(struct hw_device_t *dev) {
return reinterpret_cast<SensorContext *>(dev)->close();
}
// static
int SensorContext::ActivateWrapper(
struct sensors_poll_device_t *dev, int handle, int enabled) {
return reinterpret_cast<SensorContext *>(dev)->activate(handle, enabled);
}
// static
int SensorContext::SetDelayWrapper(
struct sensors_poll_device_t *dev, int handle, int64_t delayNs) {
return reinterpret_cast<SensorContext *>(dev)->setDelay(handle, delayNs);
}
// static
int SensorContext::PollWrapper(
struct sensors_poll_device_t *dev, sensors_event_t *data, int count) {
return reinterpret_cast<SensorContext *>(dev)->poll(data, count);
}
// static
int SensorContext::BatchWrapper(
struct sensors_poll_device_1 *dev,
int handle,
int flags,
int64_t sampling_period_ns,
int64_t max_report_latency_ns) {
return reinterpret_cast<SensorContext *>(dev)->batch(
handle, flags, sampling_period_ns, max_report_latency_ns);
}
// static
int SensorContext::FlushWrapper(struct sensors_poll_device_1 *dev, int handle) {
return reinterpret_cast<SensorContext *>(dev)->flush(handle);
}
bool SensorContext::getHubAlive() {
return mHubAlive;
}
////////////////////////////////////////////////////////////////////////////////
static bool gHubAlive;
static int open_sensors(
const struct hw_module_t *module,
const char *,
struct hw_device_t **dev) {
ALOGI("open_sensors");
SensorContext *ctx = new SensorContext(module);
gHubAlive = ctx->getHubAlive();
*dev = &ctx->device.common;
return 0;
}
static struct hw_module_methods_t sensors_module_methods = {
.open = open_sensors
};
static int get_sensors_list(
struct sensors_module_t *,
struct sensor_t const **list) {
ALOGI("get_sensors_list");
if (gHubAlive) {
*list = kSensorList;
return sizeof(kSensorList) / sizeof(kSensorList[0]);
} else {
*list = {};
return 0;
}
}
static int set_operation_mode(unsigned int mode) {
ALOGI("set_operation_mode");
return (mode) ? -EINVAL : 0;
}
struct sensors_module_t HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.version_major = 1,
.version_minor = 0,
.id = SENSORS_HARDWARE_MODULE_ID,
.name = "Google Sensor module",
.author = "Google",
.methods = &sensors_module_methods,
.dso = NULL,
.reserved = {0},
},
.get_sensors_list = get_sensors_list,
.set_operation_mode = set_operation_mode,
};