services/camera/libcameraservice/aidl/AidlUtils.cpp - LeafOS-Project/android_frameworks_av - Gitiles

 /*
  * Copyright (C) 2022 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 "AidlUtils"

 #include <aidl/AidlUtils.h>
 #include <aidl/VndkVersionMetadataTags.h>
 #include <aidlcommonsupport/NativeHandle.h>
 #include <device3/Camera3StreamInterface.h>
 #include <gui/bufferqueue/1.0/H2BGraphicBufferProducer.h>
 #include <mediautils/AImageReaderUtils.h>
 #include <camera/StringUtils.h>

 namespace android::hardware::cameraservice::utils::conversion::aidl {

 using aimg::AImageReader_getHGBPFromHandle;
 using hardware::graphics::bufferqueue::V1_0::utils::H2BGraphicBufferProducer;

 // Note: existing data in dst will be gone. Caller still owns the memory of src
 void cloneToAidl(const camera_metadata_t* src, SCameraMetadata* dst) {
     if (src == nullptr) {
         ALOGW("%s:attempt to convert empty metadata to AIDL", __FUNCTION__);
         return;
     }
     size_t size = get_camera_metadata_size(src);
     uint8_t* startPtr = (uint8_t*)src;
     uint8_t* endPtr = startPtr + size;
     dst->metadata.assign(startPtr, endPtr);
 }

 // The camera metadata here is cloned. Since we're reading metadata over
 // the binder we would need to clone it in order to avoid alignment issues.
 bool cloneFromAidl(const SCameraMetadata &src, CameraMetadata *dst) {
     const camera_metadata_t *buffer =
             reinterpret_cast<const camera_metadata_t*>(src.metadata.data());
     size_t expectedSize = src.metadata.size();
     if (buffer != nullptr) {
         int res = validate_camera_metadata_structure(buffer, &expectedSize);
         if (res == OK || res == CAMERA_METADATA_VALIDATION_SHIFTED) {
             *dst = buffer;
         } else {
             ALOGE("%s: Malformed camera metadata received from HAL", __FUNCTION__);
             return false;
         }
     }
     return true;
 }

 int32_t convertFromAidl(SStreamConfigurationMode streamConfigurationMode) {
     switch (streamConfigurationMode) {
         case SStreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE:
             return camera2::ICameraDeviceUser::CONSTRAINED_HIGH_SPEED_MODE;
         case SStreamConfigurationMode::NORMAL_MODE:
             return camera2::ICameraDeviceUser::NORMAL_MODE;
         default:
             // TODO: Fix this
             return camera2::ICameraDeviceUser::VENDOR_MODE_START;
     }
 }

 UOutputConfiguration convertFromAidl(const SOutputConfiguration &src) {
     std::vector<sp<IGraphicBufferProducer>> iGBPs;
     auto &windowHandles = src.windowHandles;
     iGBPs.reserve(windowHandles.size());

     for (auto &handle : windowHandles) {
         native_handle_t* nh = makeFromAidl(handle);
         auto igbp = AImageReader_getHGBPFromHandle(nh);
         if (igbp == nullptr) {
             ALOGE("%s: Could not get HGBP from NativeHandle: %s. Skipping.",
                     __FUNCTION__, handle.toString().c_str());
             continue;
         }
         iGBPs.push_back(new H2BGraphicBufferProducer(igbp));
         native_handle_delete(nh);
     }
     UOutputConfiguration outputConfiguration(
         iGBPs, convertFromAidl(src.rotation), src.physicalCameraId,
         src.windowGroupId, OutputConfiguration::SURFACE_TYPE_UNKNOWN, 0, 0,
         (windowHandles.size() > 1));
     return outputConfiguration;
 }

 USessionConfiguration convertFromAidl(const SSessionConfiguration &src) {
     USessionConfiguration sessionConfig(src.inputWidth, src.inputHeight,
                                         src.inputFormat, static_cast<int>(src.operationMode));

     for (const auto& os : src.outputStreams) {
         UOutputConfiguration config = convertFromAidl(os);
         sessionConfig.addOutputConfiguration(config);
     }

     return sessionConfig;
 }

 int convertFromAidl(SOutputConfiguration::Rotation rotation) {
     switch(rotation) {
         case SOutputConfiguration::Rotation::R270:
             return android::camera3::CAMERA_STREAM_ROTATION_270;
         case SOutputConfiguration::Rotation::R180:
             return android::camera3::CAMERA_STREAM_ROTATION_180;
         case SOutputConfiguration::Rotation::R90:
             return android::camera3::CAMERA_STREAM_ROTATION_90;
         case SOutputConfiguration::Rotation::R0:
         default:
             return android::camera3::CAMERA_STREAM_ROTATION_0;
     }
 }

 int32_t convertFromAidl(STemplateId templateId) {
     switch(templateId) {
         case STemplateId::PREVIEW:
             return camera2::ICameraDeviceUser::TEMPLATE_PREVIEW;
         case STemplateId::STILL_CAPTURE:
             return camera2::ICameraDeviceUser::TEMPLATE_STILL_CAPTURE;
         case STemplateId::RECORD:
             return camera2::ICameraDeviceUser::TEMPLATE_RECORD;
         case STemplateId::VIDEO_SNAPSHOT:
             return camera2::ICameraDeviceUser::TEMPLATE_VIDEO_SNAPSHOT;
         case STemplateId::ZERO_SHUTTER_LAG:
             return camera2::ICameraDeviceUser::TEMPLATE_ZERO_SHUTTER_LAG;
         case STemplateId::MANUAL:
             return camera2::ICameraDeviceUser::TEMPLATE_MANUAL;
     }
 }

 void convertToAidl(const camera2::utils::SubmitInfo& submitInfo, SSubmitInfo* hSubmitInfo) {
     hSubmitInfo->requestId = submitInfo.mRequestId;
     hSubmitInfo->lastFrameNumber = submitInfo.mLastFrameNumber;
 }


 SStatus convertToAidl(const binder::Status &status) {
     if (status.isOk()) {
         return SStatus::NO_ERROR;
     }
     if (status.exceptionCode() != EX_SERVICE_SPECIFIC) {
         return SStatus::UNKNOWN_ERROR;
     }

     switch (status.serviceSpecificErrorCode()) {
         case hardware::ICameraService::ERROR_DISCONNECTED:
             return SStatus::DISCONNECTED;
         case hardware::ICameraService::ERROR_CAMERA_IN_USE:
             return SStatus::CAMERA_IN_USE;
         case hardware::ICameraService::ERROR_MAX_CAMERAS_IN_USE:
             return SStatus::MAX_CAMERAS_IN_USE;
         case hardware::ICameraService::ERROR_ILLEGAL_ARGUMENT:
             return SStatus::ILLEGAL_ARGUMENT;
         case hardware::ICameraService::ERROR_DEPRECATED_HAL:
             // Should not reach here since we filtered legacy HALs earlier
             return SStatus::DEPRECATED_HAL;
         case hardware::ICameraService::ERROR_DISABLED:
             return SStatus::DISABLED;
         case hardware::ICameraService::ERROR_PERMISSION_DENIED:
             return SStatus::PERMISSION_DENIED;
         case hardware::ICameraService::ERROR_INVALID_OPERATION:
             return SStatus::INVALID_OPERATION;
         default:
             return SStatus::UNKNOWN_ERROR;
     }
 }

 SCaptureResultExtras convertToAidl(const UCaptureResultExtras &src) {
     SCaptureResultExtras dst;
     dst.requestId = src.requestId;
     dst.burstId = src.burstId;
     dst.frameNumber = src.frameNumber;
     dst.partialResultCount = src.partialResultCount;
     dst.errorStreamId = src.errorStreamId;
     dst.errorPhysicalCameraId = src.errorPhysicalCameraId;
     return dst;
 }

 SErrorCode convertToAidl(int32_t errorCode) {
     switch(errorCode) {
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED:
             return SErrorCode::CAMERA_DISCONNECTED;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE :
             return SErrorCode::CAMERA_DEVICE;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE:
             return SErrorCode::CAMERA_SERVICE;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST:
             return SErrorCode::CAMERA_REQUEST;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_RESULT:
             return SErrorCode::CAMERA_RESULT;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_BUFFER:
             return SErrorCode::CAMERA_BUFFER;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISABLED:
             return SErrorCode::CAMERA_DISABLED;
         case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_INVALID_ERROR:
             return SErrorCode::CAMERA_INVALID_ERROR;
         default:
             return SErrorCode::CAMERA_UNKNOWN_ERROR;
     }
 }

 std::vector<SPhysicalCaptureResultInfo> convertToAidl(
         const std::vector<UPhysicalCaptureResultInfo>& src,
         std::shared_ptr<CaptureResultMetadataQueue>& fmq) {
     std::vector<SPhysicalCaptureResultInfo> dst;
     dst.resize(src.size());
     size_t i = 0;
     for (auto &physicalCaptureResultInfo : src) {
         dst[i++] = convertToAidl(physicalCaptureResultInfo, fmq);
     }
     return dst;
 }

 SPhysicalCaptureResultInfo convertToAidl(const UPhysicalCaptureResultInfo & src,
                                          std::shared_ptr<CaptureResultMetadataQueue> & fmq) {
     SPhysicalCaptureResultInfo dst;
     dst.physicalCameraId = src.mPhysicalCameraId;

     const camera_metadata_t *rawMetadata = src.mPhysicalCameraMetadata.getAndLock();
     // Try using fmq at first.
     size_t metadata_size = get_camera_metadata_size(rawMetadata);
     if ((metadata_size > 0) && (fmq->availableToWrite() > 0)) {
         if (fmq->write((int8_t *)rawMetadata, metadata_size)) {
             dst.physicalCameraMetadata.set<SCaptureMetadataInfo::fmqMetadataSize>(metadata_size);
         } else {
             ALOGW("%s Couldn't use fmq, falling back to hwbinder", __FUNCTION__);
             SCameraMetadata metadata;
             cloneToAidl(rawMetadata, &metadata);
             dst.physicalCameraMetadata.set<SCaptureMetadataInfo::metadata>(std::move(metadata));
         }
     }
     src.mPhysicalCameraMetadata.unlock(rawMetadata);
     return dst;
 }

 void convertToAidl(const std::vector<hardware::CameraStatus> &src,
                    std::vector<SCameraStatusAndId>* dst) {
     dst->resize(src.size());
     size_t i = 0;
     for (const auto &statusAndId : src) {
         auto &a = (*dst)[i++];
         a.cameraId = statusAndId.cameraId;
         a.deviceStatus = convertCameraStatusToAidl(statusAndId.status);
         size_t numUnvailPhysicalCameras = statusAndId.unavailablePhysicalIds.size();
         a.unavailPhysicalCameraIds.resize(numUnvailPhysicalCameras);
         for (size_t j = 0; j < numUnvailPhysicalCameras; j++) {
             a.unavailPhysicalCameraIds[j] = statusAndId.unavailablePhysicalIds[j];
         }
     }
 }

 SCameraDeviceStatus convertCameraStatusToAidl(int32_t src) {
     SCameraDeviceStatus deviceStatus = SCameraDeviceStatus::STATUS_UNKNOWN;
     switch(src) {
         case hardware::ICameraServiceListener::STATUS_NOT_PRESENT:
             deviceStatus = SCameraDeviceStatus::STATUS_NOT_PRESENT;
             break;
         case hardware::ICameraServiceListener::STATUS_PRESENT:
             deviceStatus = SCameraDeviceStatus::STATUS_PRESENT;
             break;
         case hardware::ICameraServiceListener::STATUS_ENUMERATING:
             deviceStatus = SCameraDeviceStatus::STATUS_ENUMERATING;
             break;
         case hardware::ICameraServiceListener::STATUS_NOT_AVAILABLE:
             deviceStatus = SCameraDeviceStatus::STATUS_NOT_AVAILABLE;
             break;
         default:
             break;
     }
     return deviceStatus;
 }

 bool areBindersEqual(const ndk::SpAIBinder& b1, const ndk::SpAIBinder& b2) {
     return !AIBinder_lt(b1.get(), b2.get()) && !AIBinder_lt(b2.get(), b1.get());
 }

 status_t filterVndkKeys(int vndkVersion, CameraMetadata &metadata, bool isStatic) {
     if (vndkVersion == __ANDROID_API_FUTURE__) {
         // VNDK version in ro.vndk.version is a version code-name that
         // corresponds to the current version.
         return OK;
     }
     const auto &apiLevelToKeys =
             isStatic ? static_api_level_to_keys : dynamic_api_level_to_keys;
     // Find the vndk versions above the given vndk version. All the vndk
     // versions above the given one, need to have their keys filtered from the
     // metadata in order to avoid metadata invalidation.
     auto it = apiLevelToKeys.upper_bound(vndkVersion);
     while (it != apiLevelToKeys.end()) {
         for (const auto &key : it->second) {
             status_t res = metadata.erase(key);
             if (res != OK) {
                 ALOGE("%s metadata key %d could not be erased", __FUNCTION__, key);
                 return res;
             }
         }
         it++;
     }
     return OK;
 }

 } // namespace android::hardware::cameraservice::utils::conversion::aidl
	/*
	* Copyright (C) 2022 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 "AidlUtils"

	#include <aidl/AidlUtils.h>
	#include <aidl/VndkVersionMetadataTags.h>
	#include <aidlcommonsupport/NativeHandle.h>
	#include <device3/Camera3StreamInterface.h>
	#include <gui/bufferqueue/1.0/H2BGraphicBufferProducer.h>
	#include <mediautils/AImageReaderUtils.h>
	#include <camera/StringUtils.h>

	namespace android::hardware::cameraservice::utils::conversion::aidl {

	using aimg::AImageReader_getHGBPFromHandle;
	using hardware::graphics::bufferqueue::V1_0::utils::H2BGraphicBufferProducer;

	// Note: existing data in dst will be gone. Caller still owns the memory of src
	void cloneToAidl(const camera_metadata_t* src, SCameraMetadata* dst) {
	if (src == nullptr) {
	ALOGW("%s:attempt to convert empty metadata to AIDL", __FUNCTION__);
	return;
	}
	size_t size = get_camera_metadata_size(src);
	uint8_t* startPtr = (uint8_t*)src;
	uint8_t* endPtr = startPtr + size;
	dst->metadata.assign(startPtr, endPtr);
	}

	// The camera metadata here is cloned. Since we're reading metadata over
	// the binder we would need to clone it in order to avoid alignment issues.
	bool cloneFromAidl(const SCameraMetadata &src, CameraMetadata *dst) {
	const camera_metadata_t *buffer =
	reinterpret_cast<const camera_metadata_t*>(src.metadata.data());
	size_t expectedSize = src.metadata.size();
	if (buffer != nullptr) {
	int res = validate_camera_metadata_structure(buffer, &expectedSize);
	if (res == OK \|\| res == CAMERA_METADATA_VALIDATION_SHIFTED) {
	*dst = buffer;
	} else {
	ALOGE("%s: Malformed camera metadata received from HAL", __FUNCTION__);
	return false;
	}
	}
	return true;
	}

	int32_t convertFromAidl(SStreamConfigurationMode streamConfigurationMode) {
	switch (streamConfigurationMode) {
	case SStreamConfigurationMode::CONSTRAINED_HIGH_SPEED_MODE:
	return camera2::ICameraDeviceUser::CONSTRAINED_HIGH_SPEED_MODE;
	case SStreamConfigurationMode::NORMAL_MODE:
	return camera2::ICameraDeviceUser::NORMAL_MODE;
	default:
	// TODO: Fix this
	return camera2::ICameraDeviceUser::VENDOR_MODE_START;
	}
	}

	UOutputConfiguration convertFromAidl(const SOutputConfiguration &src) {
	std::vector<sp<IGraphicBufferProducer>> iGBPs;
	auto &windowHandles = src.windowHandles;
	iGBPs.reserve(windowHandles.size());

	for (auto &handle : windowHandles) {
	native_handle_t* nh = makeFromAidl(handle);
	auto igbp = AImageReader_getHGBPFromHandle(nh);
	if (igbp == nullptr) {
	ALOGE("%s: Could not get HGBP from NativeHandle: %s. Skipping.",
	__FUNCTION__, handle.toString().c_str());
	continue;
	}
	iGBPs.push_back(new H2BGraphicBufferProducer(igbp));
	native_handle_delete(nh);
	}
	UOutputConfiguration outputConfiguration(
	iGBPs, convertFromAidl(src.rotation), src.physicalCameraId,
	src.windowGroupId, OutputConfiguration::SURFACE_TYPE_UNKNOWN, 0, 0,
	(windowHandles.size() > 1));
	return outputConfiguration;
	}

	USessionConfiguration convertFromAidl(const SSessionConfiguration &src) {
	USessionConfiguration sessionConfig(src.inputWidth, src.inputHeight,
	src.inputFormat, static_cast<int>(src.operationMode));

	for (const auto& os : src.outputStreams) {
	UOutputConfiguration config = convertFromAidl(os);
	sessionConfig.addOutputConfiguration(config);
	}

	return sessionConfig;
	}

	int convertFromAidl(SOutputConfiguration::Rotation rotation) {
	switch(rotation) {
	case SOutputConfiguration::Rotation::R270:
	return android::camera3::CAMERA_STREAM_ROTATION_270;
	case SOutputConfiguration::Rotation::R180:
	return android::camera3::CAMERA_STREAM_ROTATION_180;
	case SOutputConfiguration::Rotation::R90:
	return android::camera3::CAMERA_STREAM_ROTATION_90;
	case SOutputConfiguration::Rotation::R0:
	default:
	return android::camera3::CAMERA_STREAM_ROTATION_0;
	}
	}

	int32_t convertFromAidl(STemplateId templateId) {
	switch(templateId) {
	case STemplateId::PREVIEW:
	return camera2::ICameraDeviceUser::TEMPLATE_PREVIEW;
	case STemplateId::STILL_CAPTURE:
	return camera2::ICameraDeviceUser::TEMPLATE_STILL_CAPTURE;
	case STemplateId::RECORD:
	return camera2::ICameraDeviceUser::TEMPLATE_RECORD;
	case STemplateId::VIDEO_SNAPSHOT:
	return camera2::ICameraDeviceUser::TEMPLATE_VIDEO_SNAPSHOT;
	case STemplateId::ZERO_SHUTTER_LAG:
	return camera2::ICameraDeviceUser::TEMPLATE_ZERO_SHUTTER_LAG;
	case STemplateId::MANUAL:
	return camera2::ICameraDeviceUser::TEMPLATE_MANUAL;
	}
	}

	void convertToAidl(const camera2::utils::SubmitInfo& submitInfo, SSubmitInfo* hSubmitInfo) {
	hSubmitInfo->requestId = submitInfo.mRequestId;
	hSubmitInfo->lastFrameNumber = submitInfo.mLastFrameNumber;
	}


	SStatus convertToAidl(const binder::Status &status) {
	if (status.isOk()) {
	return SStatus::NO_ERROR;
	}
	if (status.exceptionCode() != EX_SERVICE_SPECIFIC) {
	return SStatus::UNKNOWN_ERROR;
	}

	switch (status.serviceSpecificErrorCode()) {
	case hardware::ICameraService::ERROR_DISCONNECTED:
	return SStatus::DISCONNECTED;
	case hardware::ICameraService::ERROR_CAMERA_IN_USE:
	return SStatus::CAMERA_IN_USE;
	case hardware::ICameraService::ERROR_MAX_CAMERAS_IN_USE:
	return SStatus::MAX_CAMERAS_IN_USE;
	case hardware::ICameraService::ERROR_ILLEGAL_ARGUMENT:
	return SStatus::ILLEGAL_ARGUMENT;
	case hardware::ICameraService::ERROR_DEPRECATED_HAL:
	// Should not reach here since we filtered legacy HALs earlier
	return SStatus::DEPRECATED_HAL;
	case hardware::ICameraService::ERROR_DISABLED:
	return SStatus::DISABLED;
	case hardware::ICameraService::ERROR_PERMISSION_DENIED:
	return SStatus::PERMISSION_DENIED;
	case hardware::ICameraService::ERROR_INVALID_OPERATION:
	return SStatus::INVALID_OPERATION;
	default:
	return SStatus::UNKNOWN_ERROR;
	}
	}

	SCaptureResultExtras convertToAidl(const UCaptureResultExtras &src) {
	SCaptureResultExtras dst;
	dst.requestId = src.requestId;
	dst.burstId = src.burstId;
	dst.frameNumber = src.frameNumber;
	dst.partialResultCount = src.partialResultCount;
	dst.errorStreamId = src.errorStreamId;
	dst.errorPhysicalCameraId = src.errorPhysicalCameraId;
	return dst;
	}

	SErrorCode convertToAidl(int32_t errorCode) {
	switch(errorCode) {
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED:
	return SErrorCode::CAMERA_DISCONNECTED;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DEVICE :
	return SErrorCode::CAMERA_DEVICE;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_SERVICE:
	return SErrorCode::CAMERA_SERVICE;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_REQUEST:
	return SErrorCode::CAMERA_REQUEST;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_RESULT:
	return SErrorCode::CAMERA_RESULT;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_BUFFER:
	return SErrorCode::CAMERA_BUFFER;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISABLED:
	return SErrorCode::CAMERA_DISABLED;
	case camera2::ICameraDeviceCallbacks::ERROR_CAMERA_INVALID_ERROR:
	return SErrorCode::CAMERA_INVALID_ERROR;
	default:
	return SErrorCode::CAMERA_UNKNOWN_ERROR;
	}
	}

	std::vector<SPhysicalCaptureResultInfo> convertToAidl(
	const std::vector<UPhysicalCaptureResultInfo>& src,
	std::shared_ptr<CaptureResultMetadataQueue>& fmq) {
	std::vector<SPhysicalCaptureResultInfo> dst;
	dst.resize(src.size());
	size_t i = 0;
	for (auto &physicalCaptureResultInfo : src) {
	dst[i++] = convertToAidl(physicalCaptureResultInfo, fmq);
	}
	return dst;
	}

	SPhysicalCaptureResultInfo convertToAidl(const UPhysicalCaptureResultInfo & src,
	std::shared_ptr<CaptureResultMetadataQueue> & fmq) {
	SPhysicalCaptureResultInfo dst;
	dst.physicalCameraId = src.mPhysicalCameraId;

	const camera_metadata_t *rawMetadata = src.mPhysicalCameraMetadata.getAndLock();
	// Try using fmq at first.
	size_t metadata_size = get_camera_metadata_size(rawMetadata);
	if ((metadata_size > 0) && (fmq->availableToWrite() > 0)) {
	if (fmq->write((int8_t *)rawMetadata, metadata_size)) {
	dst.physicalCameraMetadata.set<SCaptureMetadataInfo::fmqMetadataSize>(metadata_size);
	} else {
	ALOGW("%s Couldn't use fmq, falling back to hwbinder", __FUNCTION__);
	SCameraMetadata metadata;
	cloneToAidl(rawMetadata, &metadata);
	dst.physicalCameraMetadata.set<SCaptureMetadataInfo::metadata>(std::move(metadata));
	}
	}
	src.mPhysicalCameraMetadata.unlock(rawMetadata);
	return dst;
	}

	void convertToAidl(const std::vector<hardware::CameraStatus> &src,
	std::vector<SCameraStatusAndId>* dst) {
	dst->resize(src.size());
	size_t i = 0;
	for (const auto &statusAndId : src) {
	auto &a = (*dst)[i++];
	a.cameraId = statusAndId.cameraId;
	a.deviceStatus = convertCameraStatusToAidl(statusAndId.status);
	size_t numUnvailPhysicalCameras = statusAndId.unavailablePhysicalIds.size();
	a.unavailPhysicalCameraIds.resize(numUnvailPhysicalCameras);
	for (size_t j = 0; j < numUnvailPhysicalCameras; j++) {
	a.unavailPhysicalCameraIds[j] = statusAndId.unavailablePhysicalIds[j];
	}
	}
	}

	SCameraDeviceStatus convertCameraStatusToAidl(int32_t src) {
	SCameraDeviceStatus deviceStatus = SCameraDeviceStatus::STATUS_UNKNOWN;
	switch(src) {
	case hardware::ICameraServiceListener::STATUS_NOT_PRESENT:
	deviceStatus = SCameraDeviceStatus::STATUS_NOT_PRESENT;
	break;
	case hardware::ICameraServiceListener::STATUS_PRESENT:
	deviceStatus = SCameraDeviceStatus::STATUS_PRESENT;
	break;
	case hardware::ICameraServiceListener::STATUS_ENUMERATING:
	deviceStatus = SCameraDeviceStatus::STATUS_ENUMERATING;
	break;
	case hardware::ICameraServiceListener::STATUS_NOT_AVAILABLE:
	deviceStatus = SCameraDeviceStatus::STATUS_NOT_AVAILABLE;
	break;
	default:
	break;
	}
	return deviceStatus;
	}

	bool areBindersEqual(const ndk::SpAIBinder& b1, const ndk::SpAIBinder& b2) {
	return !AIBinder_lt(b1.get(), b2.get()) && !AIBinder_lt(b2.get(), b1.get());
	}

	status_t filterVndkKeys(int vndkVersion, CameraMetadata &metadata, bool isStatic) {
	if (vndkVersion == __ANDROID_API_FUTURE__) {
	// VNDK version in ro.vndk.version is a version code-name that
	// corresponds to the current version.
	return OK;
	}
	const auto &apiLevelToKeys =
	isStatic ? static_api_level_to_keys : dynamic_api_level_to_keys;
	// Find the vndk versions above the given vndk version. All the vndk
	// versions above the given one, need to have their keys filtered from the
	// metadata in order to avoid metadata invalidation.
	auto it = apiLevelToKeys.upper_bound(vndkVersion);
	while (it != apiLevelToKeys.end()) {
	for (const auto &key : it->second) {
	status_t res = metadata.erase(key);
	if (res != OK) {
	ALOGE("%s metadata key %d could not be erased", __FUNCTION__, key);
	return res;
	}
	}
	it++;
	}
	return OK;
	}

	} // namespace android::hardware::cameraservice::utils::conversion::aidl