sensorservice: Start using HIDL sensor HAL. (d15c030f) · Commits · e / os / android_frameworks_native-old

services/sensorservice/Android.mk

+1 −13

Original line number	Diff line number	Diff line
		@@ -10,6 +10,7 @@ LOCAL_SRC_FILES:= \
		OrientationSensor.cpp \
		RecentEventLogger.cpp \
		RotationVectorSensor.cpp \
		SensorDevice.cpp \
		SensorDirectConnection.cpp \
		SensorEventConnection.cpp \
		SensorFusion.cpp \
		@@ -25,13 +26,6 @@ LOCAL_CFLAGS += -Wall -Werror -Wextra

		LOCAL_CFLAGS += -fvisibility=hidden

		ifeq ($(ENABLE_TREBLE), true)
		LOCAL_SRC_FILES += SensorDeviceTreble.cpp
		LOCAL_CFLAGS += -DENABLE_TREBLE=1
		else
		LOCAL_SRC_FILES += SensorDevice.cpp
		endif

		LOCAL_SHARED_LIBRARIES := \
		libcutils \
		libhardware \
		@@ -42,10 +36,6 @@ LOCAL_SHARED_LIBRARIES := \
		libui \
		libgui \
		libcrypto \

		ifeq ($(ENABLE_TREBLE), true)

		LOCAL_SHARED_LIBRARIES += \
		libbase \
		libhidlbase \
		libhidltransport \
		@@ -55,8 +45,6 @@ LOCAL_SHARED_LIBRARIES += \
		LOCAL_STATIC_LIBRARIES := \
		android.hardware.sensors@1.0-convert

		endif # ENABLE_TREBLE

		LOCAL_MODULE:= libsensorservice

		include $(BUILD_SHARED_LIBRARY)

services/sensorservice/SensorDevice.cpp

+306 −201

Original line number	Diff line number	Diff line
		@@ -14,138 +14,167 @@
		* limitations under the License.
		*/

		#include <inttypes.h>
		#include <math.h>
		#include <stdint.h>
		#include <sys/types.h>

		#include <android-base/logging.h>
		#include <utils/Atomic.h>
		#include <utils/Errors.h>
		#include <utils/Singleton.h>

		#include "SensorDevice.h"
		#include "SensorService.h"

		#include <sensors/convert.h>

		#include <binder/BinderService.h>
		#include <binder/Parcel.h>
		#include <binder/IServiceManager.h>
		#include <cutils/ashmem.h>
		#include <hardware/sensors.h>
		#include <utils/Atomic.h>
		#include <utils/Errors.h>
		#include <utils/Singleton.h>
		using android::hardware::hidl_vec;

		#include <inttypes.h>
		#include <math.h>
		#include <sys/mman.h>
		#include <stdint.h>
		#include <sys/types.h>
		#include <sstream>
		#include <unistd.h>
		using namespace android::hardware::sensors::V1_0;
		using namespace android::hardware::sensors::V1_0::implementation;

		namespace android {
		// ---------------------------------------------------------------------------

		ANDROID_SINGLETON_STATIC_INSTANCE(SensorDevice)

		SensorDevice::SensorDevice()
		: mSensorDevice(0),
		mSensorModule(0) {
		status_t err = hw_get_module(SENSORS_HARDWARE_MODULE_ID,
		(hw_module_t const**)&mSensorModule);
		static status_t StatusFromResult(Result result) {
		switch (result) {
		case Result::OK:
		return OK;
		case Result::BAD_VALUE:
		return BAD_VALUE;
		case Result::PERMISSION_DENIED:
		return PERMISSION_DENIED;
		case Result::INVALID_OPERATION:
		return INVALID_OPERATION;
		case Result::NO_MEMORY:
		return NO_MEMORY;
		}
		}

		ALOGE_IF(err, "couldn't load %s module (%s)",
		SENSORS_HARDWARE_MODULE_ID, strerror(-err));
		SensorDevice::SensorDevice() {
		mSensors = ISensors::getService();

		if (mSensorModule) {
		err = sensors_open_1(&mSensorModule->common, &mSensorDevice);
		if (mSensors == NULL) {
		return;
		}

		ALOGE_IF(err, "couldn't open device for module %s (%s)",
		SENSORS_HARDWARE_MODULE_ID, strerror(-err));
		mSensors->getSensorsList(
		[&](const auto &list) {
		const size_t count = list.size();

		if (mSensorDevice) {
		mActivationCount.setCapacity(count);
		Info model;
		for (size_t i=0 ; i < count; i++) {
		sensor_t sensor;
		convertToSensor(list[i], &sensor);
		mSensorList.push_back(sensor);

		sensor_t const* list;
		ssize_t count = mSensorModule->get_sensors_list(mSensorModule, &list);
		mActivationCount.add(list[i].sensorHandle, model);

		if (mSensorDevice->common.version < SENSORS_DEVICE_API_VERSION_1_3) {
		ALOGE(">>>> WARNING <<< Upgrade sensor HAL to version 1_3, ignoring sensors reported by this device");
		count = 0;
		mSensors->activate(list[i].sensorHandle, 0 /* enabled */);
		}
		});

		mActivationCount.setCapacity(count);
		Info model;
		for (size_t i=0 ; i<size_t(count) ; i++) {
		mActivationCount.add(list[i].handle, model);
		mSensorDevice->activate(
		reinterpret_cast<struct sensors_poll_device_t *>(mSensorDevice),
		list[i].handle, 0);
		}
		}
		}
		mIsDirectReportSupported =
		(mSensors->unregisterDirectChannel(-1) != Result::INVALID_OPERATION);
		}

		void SensorDevice::handleDynamicSensorConnection(int handle, bool connected) {
		if (connected) {
		Info model;
		mActivationCount.add(handle, model);
		mSensorDevice->activate(
		reinterpret_cast<struct sensors_poll_device_t *>(mSensorDevice), handle, 0);
		mSensors->activate(handle, 0 /* enabled */);
		} else {
		mActivationCount.removeItem(handle);
		}
		}

		std::string SensorDevice::dump() const {
		if (!mSensorModule) return "HAL not initialized\n";
		if (mSensors == NULL) return "HAL not initialized\n";

		String8 result;
		sensor_t const* list;
		int count = mSensorModule->get_sensors_list(mSensorModule, &list);
		mSensors->getSensorsList([&](const auto &list) {
		const size_t count = list.size();

		result.appendFormat("HAL: %s (%s), version %#010x\n",
		mSensorModule->common.name,
		mSensorModule->common.author,
		getHalDeviceVersion());
		result.appendFormat("Total %d h/w sensors, %zu running:\n", count, mActivationCount.size());
		result.appendFormat(
		"Total %zu h/w sensors, %zu running:\n",
		count,
		mActivationCount.size());

		Mutex::Autolock _l(mLock);
		for (int i = 0 ; i < count ; i++) {
		const Info& info = mActivationCount.valueFor(list[i].handle);
		for (size_t i = 0 ; i < count ; i++) {
		const Info& info = mActivationCount.valueFor(
		list[i].sensorHandle);

		if (info.batchParams.isEmpty()) continue;
		result.appendFormat("0x%08x) active-count = %zu; ", list[i].handle,
		result.appendFormat(
		"0x%08x) active-count = %zu; ",
		list[i].sensorHandle,
		info.batchParams.size());

		result.append("sampling_period(ms) = {");
		for (size_t j = 0; j < info.batchParams.size(); j++) {
		const BatchParams& params = info.batchParams.valueAt(j);
		result.appendFormat("%.1f%s", params.batchDelay / 1e6f,
		result.appendFormat(
		"%.1f%s",
		params.batchDelay / 1e6f,
		j < info.batchParams.size() - 1 ? ", " : "");
		}
		result.appendFormat("}, selected = %.1f ms; ", info.bestBatchParams.batchDelay / 1e6f);
		result.appendFormat(
		"}, selected = %.1f ms; ",
		info.bestBatchParams.batchDelay / 1e6f);

		result.append("batching_period(ms) = {");
		for (size_t j = 0; j < info.batchParams.size(); j++) {
		BatchParams params = info.batchParams.valueAt(j);
		result.appendFormat("%.1f%s", params.batchTimeout / 1e6f,

		result.appendFormat(
		"%.1f%s",
		params.batchTimeout / 1e6f,
		j < info.batchParams.size() - 1 ? ", " : "");
		}
		result.appendFormat("}, selected = %.1f ms\n", info.bestBatchParams.batchTimeout / 1e6f);

		result.appendFormat(
		"}, selected = %.1f ms\n",
		info.bestBatchParams.batchTimeout / 1e6f);
		}
		});

		return result.string();
		}

		ssize_t SensorDevice::getSensorList(sensor_t const** list) {
		if (!mSensorModule) return NO_INIT;
		ssize_t count = mSensorModule->get_sensors_list(mSensorModule, list);
		return count;
		*list = &mSensorList[0];

		return mSensorList.size();
		}

		status_t SensorDevice::initCheck() const {
		return mSensorDevice && mSensorModule ? NO_ERROR : NO_INIT;
		return mSensors != NULL ? NO_ERROR : NO_INIT;
		}

		ssize_t SensorDevice::poll(sensors_event_t* buffer, size_t count) {
		if (!mSensorDevice) return NO_INIT;
		ssize_t c;
		do {
		c = mSensorDevice->poll(reinterpret_cast<struct sensors_poll_device_t *> (mSensorDevice),
		buffer, count);
		} while (c == -EINTR);
		return c;
		if (mSensors == NULL) return NO_INIT;

		ssize_t err;

		mSensors->poll(
		count,
		[&](auto result,
		const auto &events,
		const auto &dynamicSensorsAdded) {
		if (result == Result::OK) {
		convertToSensorEvents(events, dynamicSensorsAdded, buffer);
		err = (ssize_t)events.size();
		} else {
		err = StatusFromResult(result);
		}
		});

		return err;
		}

		void SensorDevice::autoDisable(void *ident, int handle) {
		@@ -155,7 +184,8 @@ void SensorDevice::autoDisable(void *ident, int handle) {
		}

		status_t SensorDevice::activate(void* ident, int handle, int enabled) {
		if (!mSensorDevice) return NO_INIT;
		if (mSensors == NULL) return NO_INIT;

		status_t err(NO_ERROR);
		bool actuateHardware = false;

		@@ -187,13 +217,19 @@ status_t SensorDevice::activate(void* ident, int handle, int enabled) {
		} else {
		ALOGD_IF(DEBUG_CONNECTIONS, "disable index=%zd", info.batchParams.indexOfKey(ident));

		// If a connected dynamic sensor is deactivated, remove it from the
		// dictionary.
		auto it = mConnectedDynamicSensors.find(handle);
		if (it != mConnectedDynamicSensors.end()) {
		delete it->second;
		mConnectedDynamicSensors.erase(it);
		}

		if (info.removeBatchParamsForIdent(ident) >= 0) {
		if (info.numActiveClients() == 0) {
		// This is the last connection, we need to de-activate the underlying h/w sensor.
		actuateHardware = true;
		} else {
		const int halVersion = getHalDeviceVersion();
		if (halVersion >= SENSORS_DEVICE_API_VERSION_1_1) {
		// Call batch for this sensor with the previously calculated best effort
		// batch_rate and timeout. One of the apps has unregistered for sensor
		// events, and the best effort batch parameters might have changed.
		@@ -201,11 +237,11 @@ status_t SensorDevice::activate(void* ident, int handle, int enabled) {
		"\t>>> actuating h/w batch %d %d %" PRId64 " %" PRId64, handle,
		info.bestBatchParams.flags, info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout);
		mSensorDevice->batch(mSensorDevice, handle,info.bestBatchParams.flags,
		mSensors->batch(
		handle,
		info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout);
		}
		}
		} else {
		// sensor wasn't enabled for this ident
		}
		@@ -218,8 +254,7 @@ status_t SensorDevice::activate(void* ident, int handle, int enabled) {
		if (actuateHardware) {
		ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w activate handle=%d enabled=%d", handle,
		enabled);
		err = mSensorDevice->activate(
		reinterpret_cast<struct sensors_poll_device_t *> (mSensorDevice), handle, enabled);
		err = StatusFromResult(mSensors->activate(handle, enabled));
		ALOGE_IF(err, "Error %s sensor %d (%s)", enabled ? "activating" : "disabling", handle,
		strerror(-err));

		@@ -229,31 +264,21 @@ status_t SensorDevice::activate(void* ident, int handle, int enabled) {
		}
		}

		// On older devices which do not support batch, call setDelay().
		if (getHalDeviceVersion() < SENSORS_DEVICE_API_VERSION_1_1 && info.numActiveClients() > 0) {
		ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w setDelay %d %" PRId64, handle,
		info.bestBatchParams.batchDelay);
		mSensorDevice->setDelay(
		reinterpret_cast<struct sensors_poll_device_t *>(mSensorDevice),
		handle, info.bestBatchParams.batchDelay);
		}
		return err;
		}

		status_t SensorDevice::batch(void* ident, int handle, int flags, int64_t samplingPeriodNs,
		status_t SensorDevice::batch(
		void* ident,
		int handle,
		int flags,
		int64_t samplingPeriodNs,
		int64_t maxBatchReportLatencyNs) {
		if (!mSensorDevice) return NO_INIT;
		if (mSensors == NULL) return NO_INIT;

		if (samplingPeriodNs < MINIMUM_EVENTS_PERIOD) {
		samplingPeriodNs = MINIMUM_EVENTS_PERIOD;
		}

		const int halVersion = getHalDeviceVersion();
		if (halVersion < SENSORS_DEVICE_API_VERSION_1_1 && maxBatchReportLatencyNs != 0) {
		// Batch is not supported on older devices return invalid operation.
		return INVALID_OPERATION;
		}

		ALOGD_IF(DEBUG_CONNECTIONS,
		"SensorDevice::batch: ident=%p, handle=0x%08x, flags=%d, period_ns=%" PRId64 " timeout=%" PRId64,
		ident, handle, flags, samplingPeriodNs, maxBatchReportLatencyNs);
		@@ -282,21 +307,17 @@ status_t SensorDevice::batch(void* ident, int handle, int flags, int64_t samplin
		status_t err(NO_ERROR);
		// If the min period or min timeout has changed since the last batch call, call batch.
		if (prevBestBatchParams != info.bestBatchParams) {
		if (halVersion >= SENSORS_DEVICE_API_VERSION_1_1) {
		ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w BATCH %d %d %" PRId64 " %" PRId64, handle,
		info.bestBatchParams.flags, info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout);
		err = mSensorDevice->batch(mSensorDevice, handle, info.bestBatchParams.flags,
		err = StatusFromResult(
		mSensors->batch(
		handle,
		info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout);
		} else {
		// For older devices which do not support batch, call setDelay() after activate() is
		// called. Some older devices may not support calling setDelay before activate(), so
		// call setDelay in SensorDevice::activate() method.
		}
		info.bestBatchParams.batchTimeout));
		if (err != NO_ERROR) {
		ALOGE("sensor batch failed %p %d %d %" PRId64 " %" PRId64 " err=%s",
		mSensorDevice, handle,
		mSensors.get(), handle,
		info.bestBatchParams.flags, info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout, strerror(-err));
		info.removeBatchParamsForIdent(ident);
		@@ -306,7 +327,7 @@ status_t SensorDevice::batch(void* ident, int handle, int flags, int64_t samplin
		}

		status_t SensorDevice::setDelay(void* ident, int handle, int64_t samplingPeriodNs) {
		if (!mSensorDevice) return NO_INIT;
		if (mSensors == NULL) return NO_INIT;
		if (samplingPeriodNs < MINIMUM_EVENTS_PERIOD) {
		samplingPeriodNs = MINIMUM_EVENTS_PERIOD;
		}
		@@ -325,22 +346,20 @@ status_t SensorDevice::setDelay(void* ident, int handle, int64_t samplingPeriodN
		BatchParams& params = info.batchParams.editValueAt(index);
		params.batchDelay = samplingPeriodNs;
		info.selectBatchParams();
		return mSensorDevice->setDelay(reinterpret_cast<struct sensors_poll_device_t *>(mSensorDevice),
		handle, info.bestBatchParams.batchDelay);

		return StatusFromResult(
		mSensors->batch(handle, info.bestBatchParams.batchDelay, 0));
		}

		int SensorDevice::getHalDeviceVersion() const {
		if (!mSensorDevice) return -1;
		return mSensorDevice->common.version;
		if (mSensors == NULL) return -1;
		return SENSORS_DEVICE_API_VERSION_1_4;
		}

		status_t SensorDevice::flush(void* ident, int handle) {
		if (getHalDeviceVersion() < SENSORS_DEVICE_API_VERSION_1_1) {
		return INVALID_OPERATION;
		}
		if (isClientDisabled(ident)) return INVALID_OPERATION;
		ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w flush %d", handle);
		return mSensorDevice->flush(mSensorDevice, handle);
		return StatusFromResult(mSensors->flush(handle));
		}

		bool SensorDevice::isClientDisabled(void* ident) {
		@@ -356,7 +375,6 @@ void SensorDevice::enableAllSensors() {
		Mutex::Autolock _l(mLock);
		mDisabledClients.clear();
		ALOGI("cleared mDisabledClients");
		const int halVersion = getHalDeviceVersion();
		for (size_t i = 0; i< mActivationCount.size(); ++i) {
		Info& info = mActivationCount.editValueAt(i);
		if (info.batchParams.isEmpty()) continue;
		@@ -364,27 +382,18 @@ void SensorDevice::enableAllSensors() {
		const int sensor_handle = mActivationCount.keyAt(i);
		ALOGD_IF(DEBUG_CONNECTIONS, "\t>> reenable actuating h/w sensor enable handle=%d ",
		sensor_handle);
		status_t err(NO_ERROR);
		if (halVersion > SENSORS_DEVICE_API_VERSION_1_0) {
		err = mSensorDevice->batch(mSensorDevice, sensor_handle,
		info.bestBatchParams.flags, info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout);
		status_t err = StatusFromResult(
		mSensors->batch(
		sensor_handle,
		info.bestBatchParams.batchDelay,
		info.bestBatchParams.batchTimeout));
		ALOGE_IF(err, "Error calling batch on sensor %d (%s)", sensor_handle, strerror(-err));
		}

		if (err == NO_ERROR) {
		err = mSensorDevice->activate(
		reinterpret_cast<struct sensors_poll_device_t *>(mSensorDevice),
		sensor_handle, 1);
		err = StatusFromResult(
		mSensors->activate(sensor_handle, 1 /* enabled */));
		ALOGE_IF(err, "Error activating sensor %d (%s)", sensor_handle, strerror(-err));
		}

		if (halVersion <= SENSORS_DEVICE_API_VERSION_1_0) {
		err = mSensorDevice->setDelay(
		reinterpret_cast<struct sensors_poll_device_t *>(mSensorDevice),
		sensor_handle, info.bestBatchParams.batchDelay);
		ALOGE_IF(err, "Error calling setDelay sensor %d (%s)", sensor_handle, strerror(-err));
		}
		}
		}

		@@ -397,9 +406,8 @@ void SensorDevice::disableAllSensors() {
		const int sensor_handle = mActivationCount.keyAt(i);
		ALOGD_IF(DEBUG_CONNECTIONS, "\t>> actuating h/w sensor disable handle=%d ",
		sensor_handle);
		mSensorDevice->activate(
		reinterpret_cast<struct sensors_poll_device_t *> (mSensorDevice),
		sensor_handle, 0);
		mSensors->activate(sensor_handle, 0 /* enabled */);

		// Add all the connections that were registered for this sensor to the disabled
		// clients list.
		for (size_t j = 0; j < info.batchParams.size(); ++j) {
		@@ -410,7 +418,8 @@ void SensorDevice::disableAllSensors() {
		}
		}

		status_t SensorDevice::injectSensorData(const sensors_event_t *injected_sensor_event) {
		status_t SensorDevice::injectSensorData(
		const sensors_event_t *injected_sensor_event) {
		ALOGD_IF(DEBUG_CONNECTIONS,
		"sensor_event handle=%d ts=%" PRId64 " data=%.2f, %.2f, %.2f %.2f %.2f %.2f",
		injected_sensor_event->sensor,
		@@ -418,17 +427,18 @@ status_t SensorDevice::injectSensorData(const sensors_event_t *injected_sensor_e
		injected_sensor_event->data[1], injected_sensor_event->data[2],
		injected_sensor_event->data[3], injected_sensor_event->data[4],
		injected_sensor_event->data[5]);
		if (getHalDeviceVersion() < SENSORS_DEVICE_API_VERSION_1_4) {
		return INVALID_OPERATION;
		}
		return mSensorDevice->inject_sensor_data(mSensorDevice, injected_sensor_event);

		Event ev;
		convertFromSensorEvent(*injected_sensor_event, &ev);

		return StatusFromResult(mSensors->injectSensorData(ev));
		}

		status_t SensorDevice::setMode(uint32_t mode) {
		if (getHalDeviceVersion() < SENSORS_DEVICE_API_VERSION_1_4) {
		return INVALID_OPERATION;
		}
		return mSensorModule->set_operation_mode(mode);

		return StatusFromResult(
		mSensors->setOperationMode(
		static_cast<hardware::sensors::V1_0::OperationMode>(mode)));
		}

		// ---------------------------------------------------------------------------
		@@ -491,44 +501,139 @@ void SensorDevice::notifyConnectionDestroyed(void* ident) {
		}

		int32_t SensorDevice::registerDirectChannel(const sensors_direct_mem_t* memory) {
		Mutex::Autolock _l(mLock);

		if (!isDirectReportSupported()) {
		return INVALID_OPERATION;
		SharedMemType type;
		switch (memory->type) {
		case SENSOR_DIRECT_MEM_TYPE_ASHMEM:
		type = SharedMemType::ASHMEM;
		break;
		case SENSOR_DIRECT_MEM_TYPE_GRALLOC:
		type = SharedMemType::GRALLOC;
		break;
		default:
		return BAD_VALUE;
		}

		SharedMemFormat format;
		if (memory->format != SENSOR_DIRECT_FMT_SENSORS_EVENT) {
		return BAD_VALUE;
		}
		format = SharedMemFormat::SENSORS_EVENT;

		SharedMemInfo mem = {
		.type = type,
		.format = format,
		.size = static_cast<uint32_t>(memory->size),
		.memoryHandle = memory->handle,
		};

		int32_t ret;
		mSensors->registerDirectChannel(mem,
		[&ret](auto result, auto channelHandle) {
		if (result == Result::OK) {
		ret = channelHandle;
		} else {
		ret = StatusFromResult(result);
		}
		});
		return ret;
		}

		void SensorDevice::unregisterDirectChannel(int32_t channelHandle) {
		Mutex::Autolock _l(mLock);

		int32_t channelHandle = mSensorDevice->register_direct_channel(
		mSensorDevice, memory, -1 /channel_handle/);
		return channelHandle;
		mSensors->unregisterDirectChannel(channelHandle);
		}

		void SensorDevice::unregisterDirectChannel(int32_t channelHandle) {
		int32_t SensorDevice::configureDirectChannel(int32_t sensorHandle,
		int32_t channelHandle, const struct sensors_direct_cfg_t *config) {
		Mutex::Autolock _l(mLock);

		mSensorDevice->register_direct_channel(mSensorDevice, nullptr, channelHandle);
		RateLevel rate;
		switch(config->rate_level) {
		case SENSOR_DIRECT_RATE_STOP:
		rate = RateLevel::STOP;
		break;
		case SENSOR_DIRECT_RATE_NORMAL:
		rate = RateLevel::NORMAL;
		break;
		case SENSOR_DIRECT_RATE_FAST:
		rate = RateLevel::FAST;
		break;
		case SENSOR_DIRECT_RATE_VERY_FAST:
		rate = RateLevel::VERY_FAST;
		break;
		default:
		return BAD_VALUE;
		}

		int32_t ret;
		mSensors->configDirectReport(sensorHandle, channelHandle, rate,
		[&ret, rate] (auto result, auto token) {
		if (rate == RateLevel::STOP) {
		ret = StatusFromResult(result);
		} else {
		if (result == Result::OK) {
		ret = token;
		} else {
		ret = StatusFromResult(result);
		}
		}
		});

		int32_t SensorDevice::configureDirectChannel(int32_t sensorHandle, int32_t channelHandle,
		const struct sensors_direct_cfg_t *config) {
		return ret;
		}

		if (!isDirectReportSupported()) {
		return INVALID_OPERATION;
		bool SensorDevice::isDirectReportSupported() const {
		return mIsDirectReportSupported;
		}

		Mutex::Autolock _l(mLock);
		void SensorDevice::convertToSensorEvent(
		const Event &src, sensors_event_t *dst) {
		::android::hardware::sensors::V1_0::implementation::convertToSensorEvent(
		src, dst);

		int32_t ret = mSensorDevice->config_direct_report(
		mSensorDevice, sensorHandle, channelHandle, config);
		ALOGE_IF(ret < 0, "SensorDevice::configureDirectChannel ret %d", ret);
		return ret;
		if (src.sensorType == SensorType::DYNAMIC_SENSOR_META) {
		const DynamicSensorInfo &dyn = src.u.dynamic;

		dst->dynamic_sensor_meta.connected = dyn.connected;
		dst->dynamic_sensor_meta.handle = dyn.sensorHandle;
		if (dyn.connected) {
		auto it = mConnectedDynamicSensors.find(dyn.sensorHandle);
		CHECK(it != mConnectedDynamicSensors.end());

		dst->dynamic_sensor_meta.sensor = it->second;

		memcpy(dst->dynamic_sensor_meta.uuid,
		dyn.uuid.data(),
		sizeof(dst->dynamic_sensor_meta.uuid));
		}
		}
		}

		bool SensorDevice::isDirectReportSupported() const {
		bool ret = mSensorDevice->register_direct_channel != nullptr
		&& mSensorDevice->config_direct_report != nullptr;
		return ret;
		void SensorDevice::convertToSensorEvents(
		const hidl_vec<Event> &src,
		const hidl_vec<SensorInfo> &dynamicSensorsAdded,
		sensors_event_t *dst) {
		// Allocate a sensor_t structure for each dynamic sensor added and insert
		// it into the dictionary of connected dynamic sensors keyed by handle.
		for (size_t i = 0; i < dynamicSensorsAdded.size(); ++i) {
		const SensorInfo &info = dynamicSensorsAdded[i];

		auto it = mConnectedDynamicSensors.find(info.sensorHandle);
		CHECK(it == mConnectedDynamicSensors.end());

		sensor_t *sensor = new sensor_t;
		convertToSensor(info, sensor);

		mConnectedDynamicSensors.insert(
		std::make_pair(sensor->handle, sensor));
		}

		for (size_t i = 0; i < src.size(); ++i) {
		convertToSensorEvent(src[i], &dst[i]);
		}
		}

		// ---------------------------------------------------------------------------
		}; // namespace android