126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
/*
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* Copyright 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SLSI_GRALLOC2WRAPPER_H
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#define ANDROID_SLSI_GRALLOC2WRAPPER_H
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#include <string>
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#include <android/hardware/graphics/allocator/2.0/IAllocator.h>
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#include <android/hardware/graphics/mapper/2.0/IMapper.h>
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#include <utils/StrongPointer.h>
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namespace android {
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namespace GrallocWrapper {
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using hardware::graphics::allocator::V2_0::IAllocator;
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using hardware::graphics::common::V1_0::BufferUsage;
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using hardware::graphics::common::V1_0::PixelFormat;
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using hardware::graphics::mapper::V2_0::BufferDescriptor;
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using hardware::graphics::mapper::V2_0::Error;
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using hardware::graphics::mapper::V2_0::IMapper;
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using hardware::graphics::mapper::V2_0::YCbCrLayout;
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// A wrapper to IMapper
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class Mapper {
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public:
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Mapper();
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Error createDescriptor(
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const IMapper::BufferDescriptorInfo& descriptorInfo,
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BufferDescriptor* outDescriptor) const;
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// Import a buffer that is from another HAL, another process, or is
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// cloned.
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//
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// The returned handle must be freed with freeBuffer.
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Error importBuffer(const hardware::hidl_handle& rawHandle,
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buffer_handle_t* outBufferHandle) const;
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void freeBuffer(buffer_handle_t bufferHandle) const;
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// The ownership of acquireFence is always transferred to the callee, even
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// on errors.
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Error lock(buffer_handle_t bufferHandle, uint64_t usage,
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const IMapper::Rect& accessRegion,
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int acquireFence, void** outData) const;
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// The ownership of acquireFence is always transferred to the callee, even
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// on errors.
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Error lock(buffer_handle_t bufferHandle, uint64_t usage,
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const IMapper::Rect& accessRegion,
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int acquireFence, YCbCrLayout* outLayout) const;
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// unlock returns a fence sync object (or -1) and the fence sync object is
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// owned by the caller
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int unlock(buffer_handle_t bufferHandle) const;
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private:
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sp<IMapper> mMapper;
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};
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// A wrapper to IAllocator
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class Allocator {
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public:
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// An allocator relies on a mapper, and that mapper must be alive at all
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// time.
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Allocator(const Mapper& mapper);
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std::string dumpDebugInfo() const;
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/*
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* The returned buffers are already imported and must not be imported
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* again. outBufferHandles must point to a space that can contain at
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* least "count" buffer_handle_t.
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*/
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Error allocate(BufferDescriptor descriptor, uint32_t count,
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uint32_t* outStride, buffer_handle_t* outBufferHandles) const;
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Error allocate(BufferDescriptor descriptor,
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uint32_t* outStride, buffer_handle_t* outBufferHandle) const
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{
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return allocate(descriptor, 1, outStride, outBufferHandle);
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}
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Error allocate(const IMapper::BufferDescriptorInfo& descriptorInfo, uint32_t count,
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uint32_t* outStride, buffer_handle_t* outBufferHandles) const
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{
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BufferDescriptor descriptor;
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Error error = mMapper.createDescriptor(descriptorInfo, &descriptor);
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if (error == Error::NONE) {
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error = allocate(descriptor, count, outStride, outBufferHandles);
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}
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return error;
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}
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Error allocate(const IMapper::BufferDescriptorInfo& descriptorInfo,
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uint32_t* outStride, buffer_handle_t* outBufferHandle) const
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{
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return allocate(descriptorInfo, 1, outStride, outBufferHandle);
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}
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private:
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const Mapper& mMapper;
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sp<IAllocator> mAllocator;
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};
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} // namespace GrallocWrapper
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} // namespace android
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#endif
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