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/*
* Copyright (C) 2010 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.
*/
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/String8.h>
#include <utils/Flattenable.h>
#include <hardware/sensors.h>
#include <gui/Sensor.h>
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
Sensor::Sensor()
: mHandle(0), mType(0),
mMinValue(0), mMaxValue(0), mResolution(0),
mPower(0), mMinDelay(0), mFifoReservedEventCount(0), mFifoMaxEventCount(0)
{
}
Sensor::Sensor(struct sensor_t const* hwSensor, int halVersion)
{
mName = hwSensor->name;
mVendor = hwSensor->vendor;
mVersion = hwSensor->version;
mHandle = hwSensor->handle;
mType = hwSensor->type;
mMinValue = 0; // FIXME: minValue
mMaxValue = hwSensor->maxRange; // FIXME: maxValue
mResolution = hwSensor->resolution;
mPower = hwSensor->power;
mMinDelay = hwSensor->minDelay;
// Set fifo event count zero for older devices which do not support batching. Fused
// sensors also have their fifo counts set to zero.
if (halVersion >= SENSORS_DEVICE_API_VERSION_1_1) {
mFifoReservedEventCount = hwSensor->fifoReservedEventCount;
mFifoMaxEventCount = hwSensor->fifoMaxEventCount;
} else {
mFifoReservedEventCount = 0;
mFifoMaxEventCount = 0;
}
}
Sensor::~Sensor()
{
}
const String8& Sensor::getName() const {
return mName;
}
const String8& Sensor::getVendor() const {
return mVendor;
}
int32_t Sensor::getHandle() const {
return mHandle;
}
int32_t Sensor::getType() const {
return mType;
}
float Sensor::getMinValue() const {
return mMinValue;
}
float Sensor::getMaxValue() const {
return mMaxValue;
}
float Sensor::getResolution() const {
return mResolution;
}
float Sensor::getPowerUsage() const {
return mPower;
}
int32_t Sensor::getMinDelay() const {
return mMinDelay;
}
nsecs_t Sensor::getMinDelayNs() const {
return getMinDelay() * 1000;
}
int32_t Sensor::getVersion() const {
return mVersion;
}
int32_t Sensor::getFifoReservedEventCount() const {
return mFifoReservedEventCount;
}
int32_t Sensor::getFifoMaxEventCount() const {
return mFifoMaxEventCount;
}
size_t Sensor::getFlattenedSize() const
{
size_t fixedSize =
sizeof(int32_t) * 3 +
sizeof(float) * 4 +
sizeof(int32_t) * 3;
size_t variableSize =
sizeof(int32_t) + FlattenableUtils::align<4>(mName.length()) +
sizeof(int32_t) + FlattenableUtils::align<4>(mVendor.length());
return fixedSize + variableSize;
}
status_t Sensor::flatten(void* buffer, size_t size) const {
if (size < getFlattenedSize()) {
return NO_MEMORY;
}
FlattenableUtils::write(buffer, size, mName.length());
memcpy(static_cast<char*>(buffer), mName.string(), mName.length());
FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(mName.length()));
FlattenableUtils::write(buffer, size, mVendor.length());
memcpy(static_cast<char*>(buffer), mVendor.string(), mVendor.length());
FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(mVendor.length()));
FlattenableUtils::write(buffer, size, mVersion);
FlattenableUtils::write(buffer, size, mHandle);
FlattenableUtils::write(buffer, size, mType);
FlattenableUtils::write(buffer, size, mMinValue);
FlattenableUtils::write(buffer, size, mMaxValue);
FlattenableUtils::write(buffer, size, mResolution);
FlattenableUtils::write(buffer, size, mPower);
FlattenableUtils::write(buffer, size, mMinDelay);
FlattenableUtils::write(buffer, size, mFifoReservedEventCount);
FlattenableUtils::write(buffer, size, mFifoMaxEventCount);
return NO_ERROR;
}
status_t Sensor::unflatten(void const* buffer, size_t size) {
size_t len;
if (size < sizeof(size_t)) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, len);
if (size < len) {
return NO_MEMORY;
}
mName.setTo(static_cast<char const*>(buffer), len);
FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
if (size < sizeof(size_t)) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, len);
if (size < len) {
return NO_MEMORY;
}
mVendor.setTo(static_cast<char const*>(buffer), len);
FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
size_t fixedSize =
sizeof(int32_t) * 3 +
sizeof(float) * 4 +
sizeof(int32_t) * 3;
if (size < fixedSize) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, mVersion);
FlattenableUtils::read(buffer, size, mHandle);
FlattenableUtils::read(buffer, size, mType);
FlattenableUtils::read(buffer, size, mMinValue);
FlattenableUtils::read(buffer, size, mMaxValue);
FlattenableUtils::read(buffer, size, mResolution);
FlattenableUtils::read(buffer, size, mPower);
FlattenableUtils::read(buffer, size, mMinDelay);
FlattenableUtils::read(buffer, size, mFifoReservedEventCount);
FlattenableUtils::read(buffer, size, mFifoMaxEventCount);
return NO_ERROR;
}
// ----------------------------------------------------------------------------
}; // namespace android
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