libs/ui/Gralloc3.cpp - android_frameworks_native - Gitiles

 /*
  * Copyright 2016 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 "Gralloc3"

 #include <hidl/ServiceManagement.h>
 #include <hwbinder/IPCThreadState.h>
 #include <ui/Gralloc3.h>

 #include <inttypes.h>
 #include <log/log.h>
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wzero-length-array"
 #include <sync/sync.h>
 #pragma clang diagnostic pop

 using android::hardware::graphics::allocator::V3_0::IAllocator;
 using android::hardware::graphics::common::V1_2::BufferUsage;
 using android::hardware::graphics::mapper::V3_0::BufferDescriptor;
 using android::hardware::graphics::mapper::V3_0::Error;
 using android::hardware::graphics::mapper::V3_0::IMapper;
 using android::hardware::graphics::mapper::V3_0::YCbCrLayout;

 namespace android {

 namespace {

 static constexpr Error kTransactionError = Error::NO_RESOURCES;

 uint64_t getValidUsageBits() {
     static const uint64_t validUsageBits = []() -> uint64_t {
         uint64_t bits = 0;
         for (const auto bit :
              hardware::hidl_enum_range<hardware::graphics::common::V1_2::BufferUsage>()) {
             bits = bits | bit;
         }
         return bits;
     }();
     return validUsageBits;
 }

 static inline IMapper::Rect sGralloc3Rect(const Rect& rect) {
     IMapper::Rect outRect{};
     outRect.left = rect.left;
     outRect.top = rect.top;
     outRect.width = rect.width();
     outRect.height = rect.height();
     return outRect;
 }
 static inline void sBufferDescriptorInfo(uint32_t width, uint32_t height,
                                          android::PixelFormat format, uint32_t layerCount,
                                          uint64_t usage,
                                          IMapper::BufferDescriptorInfo* outDescriptorInfo) {
     outDescriptorInfo->width = width;
     outDescriptorInfo->height = height;
     outDescriptorInfo->layerCount = layerCount;
     outDescriptorInfo->format = static_cast<hardware::graphics::common::V1_2::PixelFormat>(format);
     outDescriptorInfo->usage = usage;
 }

 } // anonymous namespace

 void Gralloc3Mapper::preload() {
     android::hardware::preloadPassthroughService<IMapper>();
 }

 Gralloc3Mapper::Gralloc3Mapper() {
     mMapper = IMapper::getService();
     if (mMapper == nullptr) {
         ALOGW("mapper 3.x is not supported");
         return;
     }
     if (mMapper->isRemote()) {
         LOG_ALWAYS_FATAL("gralloc-mapper must be in passthrough mode");
     }
 }

 bool Gralloc3Mapper::isLoaded() const {
     return mMapper != nullptr;
 }

 status_t Gralloc3Mapper::validateBufferDescriptorInfo(
         IMapper::BufferDescriptorInfo* descriptorInfo) const {
     uint64_t validUsageBits = getValidUsageBits();

     if (descriptorInfo->usage & ~validUsageBits) {
         ALOGE("buffer descriptor contains invalid usage bits 0x%" PRIx64,
               descriptorInfo->usage & ~validUsageBits);
         return BAD_VALUE;
     }
     return NO_ERROR;
 }

 status_t Gralloc3Mapper::createDescriptor(void* bufferDescriptorInfo,
                                           void* outBufferDescriptor) const {
     IMapper::BufferDescriptorInfo* descriptorInfo =
             static_cast<IMapper::BufferDescriptorInfo*>(bufferDescriptorInfo);
     BufferDescriptor* outDescriptor = static_cast<BufferDescriptor*>(outBufferDescriptor);

     status_t status = validateBufferDescriptorInfo(descriptorInfo);
     if (status != NO_ERROR) {
         return status;
     }

     Error error;
     auto hidl_cb = [&](const auto& tmpError, const auto& tmpDescriptor) {
         error = tmpError;
         if (error != Error::NONE) {
             return;
         }
         *outDescriptor = tmpDescriptor;
     };

     hardware::Return<void> ret = mMapper->createDescriptor(*descriptorInfo, hidl_cb);

     return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
 }

 status_t Gralloc3Mapper::importBuffer(const hardware::hidl_handle& rawHandle,
                                       buffer_handle_t* outBufferHandle) const {
     Error error;
     auto ret = mMapper->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBuffer) {
         error = tmpError;
         if (error != Error::NONE) {
             return;
         }
         *outBufferHandle = static_cast<buffer_handle_t>(tmpBuffer);
     });

     return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
 }

 void Gralloc3Mapper::freeBuffer(buffer_handle_t bufferHandle) const {
     auto buffer = const_cast<native_handle_t*>(bufferHandle);
     auto ret = mMapper->freeBuffer(buffer);

     auto error = (ret.isOk()) ? static_cast<Error>(ret) : kTransactionError;
     ALOGE_IF(error != Error::NONE, "freeBuffer(%p) failed with %d", buffer, error);
 }

 status_t Gralloc3Mapper::validateBufferSize(buffer_handle_t bufferHandle, uint32_t width,
                                             uint32_t height, android::PixelFormat format,
                                             uint32_t layerCount, uint64_t usage,
                                             uint32_t stride) const {
     IMapper::BufferDescriptorInfo descriptorInfo;
     sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);

     auto buffer = const_cast<native_handle_t*>(bufferHandle);
     auto ret = mMapper->validateBufferSize(buffer, descriptorInfo, stride);

     return static_cast<status_t>((ret.isOk()) ? static_cast<Error>(ret) : kTransactionError);
 }

 void Gralloc3Mapper::getTransportSize(buffer_handle_t bufferHandle, uint32_t* outNumFds,
                                       uint32_t* outNumInts) const {
     *outNumFds = uint32_t(bufferHandle->numFds);
     *outNumInts = uint32_t(bufferHandle->numInts);

     Error error;
     auto buffer = const_cast<native_handle_t*>(bufferHandle);
     auto ret = mMapper->getTransportSize(buffer,
                                          [&](const auto& tmpError, const auto& tmpNumFds,
                                              const auto& tmpNumInts) {
                                              error = tmpError;
                                              if (error != Error::NONE) {
                                                  return;
                                              }
                                              *outNumFds = tmpNumFds;
                                              *outNumInts = tmpNumInts;
                                          });

     error = (ret.isOk()) ? error : kTransactionError;

     ALOGE_IF(error != Error::NONE, "getTransportSize(%p) failed with %d", buffer, error);
 }

 status_t Gralloc3Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage, const Rect& bounds,
                               int acquireFence, void** outData, int32_t* outBytesPerPixel,
                               int32_t* outBytesPerStride) const {
     auto buffer = const_cast<native_handle_t*>(bufferHandle);

     IMapper::Rect accessRegion = sGralloc3Rect(bounds);

     // put acquireFence in a hidl_handle
     hardware::hidl_handle acquireFenceHandle;
     NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
     if (acquireFence >= 0) {
         auto h = native_handle_init(acquireFenceStorage, 1, 0);
         h->data[0] = acquireFence;
         acquireFenceHandle = h;
     }

     Error error;
     auto ret = mMapper->lock(buffer, usage, accessRegion, acquireFenceHandle,
                              [&](const auto& tmpError, const auto& tmpData,
                                  const auto& tmpBytesPerPixel, const auto& tmpBytesPerStride) {
                                  error = tmpError;
                                  if (error != Error::NONE) {
                                      return;
                                  }
                                  *outData = tmpData;
                                  if (outBytesPerPixel) {
                                      *outBytesPerPixel = tmpBytesPerPixel;
                                  }
                                  if (outBytesPerStride) {
                                      *outBytesPerStride = tmpBytesPerStride;
                                  }
                              });

     // we own acquireFence even on errors
     if (acquireFence >= 0) {
         close(acquireFence);
     }

     error = (ret.isOk()) ? error : kTransactionError;

     ALOGW_IF(error != Error::NONE, "lock(%p, ...) failed: %d", bufferHandle, error);

     return static_cast<status_t>(error);
 }

 status_t Gralloc3Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage, const Rect& bounds,
                               int acquireFence, android_ycbcr* ycbcr) const {
     auto buffer = const_cast<native_handle_t*>(bufferHandle);

     IMapper::Rect accessRegion = sGralloc3Rect(bounds);

     // put acquireFence in a hidl_handle
     hardware::hidl_handle acquireFenceHandle;
     NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
     if (acquireFence >= 0) {
         auto h = native_handle_init(acquireFenceStorage, 1, 0);
         h->data[0] = acquireFence;
         acquireFenceHandle = h;
     }

     YCbCrLayout layout;
     Error error;
     auto ret = mMapper->lockYCbCr(buffer, usage, accessRegion, acquireFenceHandle,
                                   [&](const auto& tmpError, const auto& tmpLayout) {
                                       error = tmpError;
                                       if (error != Error::NONE) {
                                           return;
                                       }

                                       layout = tmpLayout;
                                   });

     if (error == Error::NONE) {
         ycbcr->y = layout.y;
         ycbcr->cb = layout.cb;
         ycbcr->cr = layout.cr;
         ycbcr->ystride = static_cast<size_t>(layout.yStride);
         ycbcr->cstride = static_cast<size_t>(layout.cStride);
         ycbcr->chroma_step = static_cast<size_t>(layout.chromaStep);
     }

     // we own acquireFence even on errors
     if (acquireFence >= 0) {
         close(acquireFence);
     }

     return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
 }

 int Gralloc3Mapper::unlock(buffer_handle_t bufferHandle) const {
     auto buffer = const_cast<native_handle_t*>(bufferHandle);

     int releaseFence = -1;
     Error error;
     auto ret = mMapper->unlock(buffer, [&](const auto& tmpError, const auto& tmpReleaseFence) {
         error = tmpError;
         if (error != Error::NONE) {
             return;
         }

         auto fenceHandle = tmpReleaseFence.getNativeHandle();
         if (fenceHandle && fenceHandle->numFds == 1) {
             int fd = dup(fenceHandle->data[0]);
             if (fd >= 0) {
                 releaseFence = fd;
             } else {
                 ALOGD("failed to dup unlock release fence");
                 sync_wait(fenceHandle->data[0], -1);
             }
         }
     });

     if (!ret.isOk()) {
         error = kTransactionError;
     }

     if (error != Error::NONE) {
         ALOGE("unlock(%p) failed with %d", buffer, error);
     }

     return releaseFence;
 }

 status_t Gralloc3Mapper::isSupported(uint32_t width, uint32_t height, android::PixelFormat format,
                                      uint32_t layerCount, uint64_t usage,
                                      bool* outSupported) const {
     IMapper::BufferDescriptorInfo descriptorInfo;
     sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);

     Error error;
     auto ret = mMapper->isSupported(descriptorInfo,
                                     [&](const auto& tmpError, const auto& tmpSupported) {
                                         error = tmpError;
                                         if (error != Error::NONE) {
                                             return;
                                         }
                                         if (outSupported) {
                                             *outSupported = tmpSupported;
                                         }
                                     });

     if (!ret.isOk()) {
         error = kTransactionError;
     }

     if (error != Error::NONE) {
         ALOGE("isSupported(%u, %u, %d, %u, ...) failed with %d", width, height, format, layerCount,
               error);
     }

     return static_cast<status_t>(error);
 }

 Gralloc3Allocator::Gralloc3Allocator(const Gralloc3Mapper& mapper) : mMapper(mapper) {
     mAllocator = IAllocator::getService();
     if (mAllocator == nullptr) {
         ALOGW("allocator 3.x is not supported");
         return;
     }
 }

 bool Gralloc3Allocator::isLoaded() const {
     return mAllocator != nullptr;
 }

 std::string Gralloc3Allocator::dumpDebugInfo(bool /*less*/) const {
     std::string debugInfo;

     mAllocator->dumpDebugInfo([&](const auto& tmpDebugInfo) { debugInfo = tmpDebugInfo.c_str(); });

     return debugInfo;
 }

 status_t Gralloc3Allocator::allocate(std::string /*requestorName*/, uint32_t width, uint32_t height,
                                      android::PixelFormat format, uint32_t layerCount,
                                      uint64_t usage, uint32_t bufferCount, uint32_t* outStride,
                                      buffer_handle_t* outBufferHandles, bool importBuffers) const {
     IMapper::BufferDescriptorInfo descriptorInfo;
     sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);

     BufferDescriptor descriptor;
     status_t error = mMapper.createDescriptor(static_cast<void*>(&descriptorInfo),
                                               static_cast<void*>(&descriptor));
     if (error != NO_ERROR) {
         return error;
     }

     auto ret = mAllocator->allocate(descriptor, bufferCount,
                                     [&](const auto& tmpError, const auto& tmpStride,
                                         const auto& tmpBuffers) {
                                         error = static_cast<status_t>(tmpError);
                                         if (tmpError != Error::NONE) {
                                             return;
                                         }

                                         if (importBuffers) {
                                             for (uint32_t i = 0; i < bufferCount; i++) {
                                                 error = mMapper.importBuffer(tmpBuffers[i],
                                                                              &outBufferHandles[i]);
                                                 if (error != NO_ERROR) {
                                                     for (uint32_t j = 0; j < i; j++) {
                                                         mMapper.freeBuffer(outBufferHandles[j]);
                                                         outBufferHandles[j] = nullptr;
                                                     }
                                                     return;
                                                 }
                                             }
                                         } else {
                                             for (uint32_t i = 0; i < bufferCount; i++) {
                                                 outBufferHandles[i] = native_handle_clone(
                                                         tmpBuffers[i].getNativeHandle());
                                                 if (!outBufferHandles[i]) {
                                                     for (uint32_t j = 0; j < i; j++) {
                                                         auto buffer = const_cast<native_handle_t*>(
                                                                 outBufferHandles[j]);
                                                         native_handle_close(buffer);
                                                         native_handle_delete(buffer);
                                                         outBufferHandles[j] = nullptr;
                                                     }
                                                 }
                                             }
                                         }
                                         *outStride = tmpStride;
                                     });

     // make sure the kernel driver sees BC_FREE_BUFFER and closes the fds now
     hardware::IPCThreadState::self()->flushCommands();

     return (ret.isOk()) ? error : static_cast<status_t>(kTransactionError);
 }

 } // namespace android
	/*
	* Copyright 2016 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 "Gralloc3"

	#include <hidl/ServiceManagement.h>
	#include <hwbinder/IPCThreadState.h>
	#include <ui/Gralloc3.h>

	#include <inttypes.h>
	#include <log/log.h>
	#pragma clang diagnostic push
	#pragma clang diagnostic ignored "-Wzero-length-array"
	#include <sync/sync.h>
	#pragma clang diagnostic pop

	using android::hardware::graphics::allocator::V3_0::IAllocator;
	using android::hardware::graphics::common::V1_2::BufferUsage;
	using android::hardware::graphics::mapper::V3_0::BufferDescriptor;
	using android::hardware::graphics::mapper::V3_0::Error;
	using android::hardware::graphics::mapper::V3_0::IMapper;
	using android::hardware::graphics::mapper::V3_0::YCbCrLayout;

	namespace android {

	namespace {

	static constexpr Error kTransactionError = Error::NO_RESOURCES;

	uint64_t getValidUsageBits() {
	static const uint64_t validUsageBits = []() -> uint64_t {
	uint64_t bits = 0;
	for (const auto bit :
	hardware::hidl_enum_range<hardware::graphics::common::V1_2::BufferUsage>()) {
	bits = bits \| bit;
	}
	return bits;
	}();
	return validUsageBits;
	}

	static inline IMapper::Rect sGralloc3Rect(const Rect& rect) {
	IMapper::Rect outRect{};
	outRect.left = rect.left;
	outRect.top = rect.top;
	outRect.width = rect.width();
	outRect.height = rect.height();
	return outRect;
	}
	static inline void sBufferDescriptorInfo(uint32_t width, uint32_t height,
	android::PixelFormat format, uint32_t layerCount,
	uint64_t usage,
	IMapper::BufferDescriptorInfo* outDescriptorInfo) {
	outDescriptorInfo->width = width;
	outDescriptorInfo->height = height;
	outDescriptorInfo->layerCount = layerCount;
	outDescriptorInfo->format = static_cast<hardware::graphics::common::V1_2::PixelFormat>(format);
	outDescriptorInfo->usage = usage;
	}

	} // anonymous namespace

	void Gralloc3Mapper::preload() {
	android::hardware::preloadPassthroughService<IMapper>();
	}

	Gralloc3Mapper::Gralloc3Mapper() {
	mMapper = IMapper::getService();
	if (mMapper == nullptr) {
	ALOGW("mapper 3.x is not supported");
	return;
	}
	if (mMapper->isRemote()) {
	LOG_ALWAYS_FATAL("gralloc-mapper must be in passthrough mode");
	}
	}

	bool Gralloc3Mapper::isLoaded() const {
	return mMapper != nullptr;
	}

	status_t Gralloc3Mapper::validateBufferDescriptorInfo(
	IMapper::BufferDescriptorInfo* descriptorInfo) const {
	uint64_t validUsageBits = getValidUsageBits();

	if (descriptorInfo->usage & ~validUsageBits) {
	ALOGE("buffer descriptor contains invalid usage bits 0x%" PRIx64,
	descriptorInfo->usage & ~validUsageBits);
	return BAD_VALUE;
	}
	return NO_ERROR;
	}

	status_t Gralloc3Mapper::createDescriptor(void* bufferDescriptorInfo,
	void* outBufferDescriptor) const {
	IMapper::BufferDescriptorInfo* descriptorInfo =
	static_cast<IMapper::BufferDescriptorInfo*>(bufferDescriptorInfo);
	BufferDescriptor* outDescriptor = static_cast<BufferDescriptor*>(outBufferDescriptor);

	status_t status = validateBufferDescriptorInfo(descriptorInfo);
	if (status != NO_ERROR) {
	return status;
	}

	Error error;
	auto hidl_cb = [&](const auto& tmpError, const auto& tmpDescriptor) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}
	*outDescriptor = tmpDescriptor;
	};

	hardware::Return<void> ret = mMapper->createDescriptor(*descriptorInfo, hidl_cb);

	return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
	}

	status_t Gralloc3Mapper::importBuffer(const hardware::hidl_handle& rawHandle,
	buffer_handle_t* outBufferHandle) const {
	Error error;
	auto ret = mMapper->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBuffer) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}
	*outBufferHandle = static_cast<buffer_handle_t>(tmpBuffer);
	});

	return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
	}

	void Gralloc3Mapper::freeBuffer(buffer_handle_t bufferHandle) const {
	auto buffer = const_cast<native_handle_t*>(bufferHandle);
	auto ret = mMapper->freeBuffer(buffer);

	auto error = (ret.isOk()) ? static_cast<Error>(ret) : kTransactionError;
	ALOGE_IF(error != Error::NONE, "freeBuffer(%p) failed with %d", buffer, error);
	}

	status_t Gralloc3Mapper::validateBufferSize(buffer_handle_t bufferHandle, uint32_t width,
	uint32_t height, android::PixelFormat format,
	uint32_t layerCount, uint64_t usage,
	uint32_t stride) const {
	IMapper::BufferDescriptorInfo descriptorInfo;
	sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);

	auto buffer = const_cast<native_handle_t*>(bufferHandle);
	auto ret = mMapper->validateBufferSize(buffer, descriptorInfo, stride);

	return static_cast<status_t>((ret.isOk()) ? static_cast<Error>(ret) : kTransactionError);
	}

	void Gralloc3Mapper::getTransportSize(buffer_handle_t bufferHandle, uint32_t* outNumFds,
	uint32_t* outNumInts) const {
	*outNumFds = uint32_t(bufferHandle->numFds);
	*outNumInts = uint32_t(bufferHandle->numInts);

	Error error;
	auto buffer = const_cast<native_handle_t*>(bufferHandle);
	auto ret = mMapper->getTransportSize(buffer,
	[&](const auto& tmpError, const auto& tmpNumFds,
	const auto& tmpNumInts) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}
	*outNumFds = tmpNumFds;
	*outNumInts = tmpNumInts;
	});

	error = (ret.isOk()) ? error : kTransactionError;

	ALOGE_IF(error != Error::NONE, "getTransportSize(%p) failed with %d", buffer, error);
	}

	status_t Gralloc3Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage, const Rect& bounds,
	int acquireFence, void** outData, int32_t* outBytesPerPixel,
	int32_t* outBytesPerStride) const {
	auto buffer = const_cast<native_handle_t*>(bufferHandle);

	IMapper::Rect accessRegion = sGralloc3Rect(bounds);

	// put acquireFence in a hidl_handle
	hardware::hidl_handle acquireFenceHandle;
	NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
	if (acquireFence >= 0) {
	auto h = native_handle_init(acquireFenceStorage, 1, 0);
	h->data[0] = acquireFence;
	acquireFenceHandle = h;
	}

	Error error;
	auto ret = mMapper->lock(buffer, usage, accessRegion, acquireFenceHandle,
	[&](const auto& tmpError, const auto& tmpData,
	const auto& tmpBytesPerPixel, const auto& tmpBytesPerStride) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}
	*outData = tmpData;
	if (outBytesPerPixel) {
	*outBytesPerPixel = tmpBytesPerPixel;
	}
	if (outBytesPerStride) {
	*outBytesPerStride = tmpBytesPerStride;
	}
	});

	// we own acquireFence even on errors
	if (acquireFence >= 0) {
	close(acquireFence);
	}

	error = (ret.isOk()) ? error : kTransactionError;

	ALOGW_IF(error != Error::NONE, "lock(%p, ...) failed: %d", bufferHandle, error);

	return static_cast<status_t>(error);
	}

	status_t Gralloc3Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage, const Rect& bounds,
	int acquireFence, android_ycbcr* ycbcr) const {
	auto buffer = const_cast<native_handle_t*>(bufferHandle);

	IMapper::Rect accessRegion = sGralloc3Rect(bounds);

	// put acquireFence in a hidl_handle
	hardware::hidl_handle acquireFenceHandle;
	NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
	if (acquireFence >= 0) {
	auto h = native_handle_init(acquireFenceStorage, 1, 0);
	h->data[0] = acquireFence;
	acquireFenceHandle = h;
	}

	YCbCrLayout layout;
	Error error;
	auto ret = mMapper->lockYCbCr(buffer, usage, accessRegion, acquireFenceHandle,
	[&](const auto& tmpError, const auto& tmpLayout) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}

	layout = tmpLayout;
	});

	if (error == Error::NONE) {
	ycbcr->y = layout.y;
	ycbcr->cb = layout.cb;
	ycbcr->cr = layout.cr;
	ycbcr->ystride = static_cast<size_t>(layout.yStride);
	ycbcr->cstride = static_cast<size_t>(layout.cStride);
	ycbcr->chroma_step = static_cast<size_t>(layout.chromaStep);
	}

	// we own acquireFence even on errors
	if (acquireFence >= 0) {
	close(acquireFence);
	}

	return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
	}

	int Gralloc3Mapper::unlock(buffer_handle_t bufferHandle) const {
	auto buffer = const_cast<native_handle_t*>(bufferHandle);

	int releaseFence = -1;
	Error error;
	auto ret = mMapper->unlock(buffer, [&](const auto& tmpError, const auto& tmpReleaseFence) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}

	auto fenceHandle = tmpReleaseFence.getNativeHandle();
	if (fenceHandle && fenceHandle->numFds == 1) {
	int fd = dup(fenceHandle->data[0]);
	if (fd >= 0) {
	releaseFence = fd;
	} else {
	ALOGD("failed to dup unlock release fence");
	sync_wait(fenceHandle->data[0], -1);
	}
	}
	});

	if (!ret.isOk()) {
	error = kTransactionError;
	}

	if (error != Error::NONE) {
	ALOGE("unlock(%p) failed with %d", buffer, error);
	}

	return releaseFence;
	}

	status_t Gralloc3Mapper::isSupported(uint32_t width, uint32_t height, android::PixelFormat format,
	uint32_t layerCount, uint64_t usage,
	bool* outSupported) const {
	IMapper::BufferDescriptorInfo descriptorInfo;
	sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);

	Error error;
	auto ret = mMapper->isSupported(descriptorInfo,
	[&](const auto& tmpError, const auto& tmpSupported) {
	error = tmpError;
	if (error != Error::NONE) {
	return;
	}
	if (outSupported) {
	*outSupported = tmpSupported;
	}
	});

	if (!ret.isOk()) {
	error = kTransactionError;
	}

	if (error != Error::NONE) {
	ALOGE("isSupported(%u, %u, %d, %u, ...) failed with %d", width, height, format, layerCount,
	error);
	}

	return static_cast<status_t>(error);
	}

	Gralloc3Allocator::Gralloc3Allocator(const Gralloc3Mapper& mapper) : mMapper(mapper) {
	mAllocator = IAllocator::getService();
	if (mAllocator == nullptr) {
	ALOGW("allocator 3.x is not supported");
	return;
	}
	}

	bool Gralloc3Allocator::isLoaded() const {
	return mAllocator != nullptr;
	}

	std::string Gralloc3Allocator::dumpDebugInfo(bool /less/) const {
	std::string debugInfo;

	mAllocator->dumpDebugInfo([&](const auto& tmpDebugInfo) { debugInfo = tmpDebugInfo.c_str(); });

	return debugInfo;
	}

	status_t Gralloc3Allocator::allocate(std::string /requestorName/, uint32_t width, uint32_t height,
	android::PixelFormat format, uint32_t layerCount,
	uint64_t usage, uint32_t bufferCount, uint32_t* outStride,
	buffer_handle_t* outBufferHandles, bool importBuffers) const {
	IMapper::BufferDescriptorInfo descriptorInfo;
	sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);

	BufferDescriptor descriptor;
	status_t error = mMapper.createDescriptor(static_cast<void*>(&descriptorInfo),
	static_cast<void*>(&descriptor));
	if (error != NO_ERROR) {
	return error;
	}

	auto ret = mAllocator->allocate(descriptor, bufferCount,
	[&](const auto& tmpError, const auto& tmpStride,
	const auto& tmpBuffers) {
	error = static_cast<status_t>(tmpError);
	if (tmpError != Error::NONE) {
	return;
	}

	if (importBuffers) {
	for (uint32_t i = 0; i < bufferCount; i++) {
	error = mMapper.importBuffer(tmpBuffers[i],
	&outBufferHandles[i]);
	if (error != NO_ERROR) {
	for (uint32_t j = 0; j < i; j++) {
	mMapper.freeBuffer(outBufferHandles[j]);
	outBufferHandles[j] = nullptr;
	}
	return;
	}
	}
	} else {
	for (uint32_t i = 0; i < bufferCount; i++) {
	outBufferHandles[i] = native_handle_clone(
	tmpBuffers[i].getNativeHandle());
	if (!outBufferHandles[i]) {
	for (uint32_t j = 0; j < i; j++) {
	auto buffer = const_cast<native_handle_t*>(
	outBufferHandles[j]);
	native_handle_close(buffer);
	native_handle_delete(buffer);
	outBufferHandles[j] = nullptr;
	}
	}
	}
	}
	*outStride = tmpStride;
	});

	// make sure the kernel driver sees BC_FREE_BUFFER and closes the fds now
	hardware::IPCThreadState::self()->flushCommands();

	return (ret.isOk()) ? error : static_cast<status_t>(kTransactionError);
	}

	} // namespace android