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/*
* 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.
*/
#ifndef ANDROID_SLSI_GRALLOC2WRAPPER_H
#define ANDROID_SLSI_GRALLOC2WRAPPER_H
#include <string>
#include <android/hardware/graphics/allocator/2.0/IAllocator.h>
#include <android/hardware/graphics/mapper/2.0/IMapper.h>
#include <utils/StrongPointer.h>
namespace android {
namespace GrallocWrapper {
using hardware::graphics::allocator::V2_0::IAllocator;
using hardware::graphics::common::V1_0::BufferUsage;
using hardware::graphics::common::V1_0::PixelFormat;
using hardware::graphics::mapper::V2_0::BufferDescriptor;
using hardware::graphics::mapper::V2_0::Error;
using hardware::graphics::mapper::V2_0::IMapper;
using hardware::graphics::mapper::V2_0::YCbCrLayout;
// A wrapper to IMapper
class Mapper {
public:
Mapper();
Error createDescriptor(
const IMapper::BufferDescriptorInfo& descriptorInfo,
BufferDescriptor* outDescriptor) const;
// Import a buffer that is from another HAL, another process, or is
// cloned.
//
// The returned handle must be freed with freeBuffer.
Error importBuffer(const hardware::hidl_handle& rawHandle,
buffer_handle_t* outBufferHandle) const;
void freeBuffer(buffer_handle_t bufferHandle) const;
// The ownership of acquireFence is always transferred to the callee, even
// on errors.
Error lock(buffer_handle_t bufferHandle, uint64_t usage,
const IMapper::Rect& accessRegion,
int acquireFence, void** outData) const;
// The ownership of acquireFence is always transferred to the callee, even
// on errors.
Error lock(buffer_handle_t bufferHandle, uint64_t usage,
const IMapper::Rect& accessRegion,
int acquireFence, YCbCrLayout* outLayout) const;
// unlock returns a fence sync object (or -1) and the fence sync object is
// owned by the caller
int unlock(buffer_handle_t bufferHandle) const;
private:
sp<IMapper> mMapper;
};
// A wrapper to IAllocator
class Allocator {
public:
// An allocator relies on a mapper, and that mapper must be alive at all
// time.
Allocator(const Mapper& mapper);
std::string dumpDebugInfo() const;
/*
* The returned buffers are already imported and must not be imported
* again. outBufferHandles must point to a space that can contain at
* least "count" buffer_handle_t.
*/
Error allocate(BufferDescriptor descriptor, uint32_t count,
uint32_t* outStride, buffer_handle_t* outBufferHandles) const;
Error allocate(BufferDescriptor descriptor,
uint32_t* outStride, buffer_handle_t* outBufferHandle) const
{
return allocate(descriptor, 1, outStride, outBufferHandle);
}
Error allocate(const IMapper::BufferDescriptorInfo& descriptorInfo, uint32_t count,
uint32_t* outStride, buffer_handle_t* outBufferHandles) const
{
BufferDescriptor descriptor;
Error error = mMapper.createDescriptor(descriptorInfo, &descriptor);
if (error == Error::NONE) {
error = allocate(descriptor, count, outStride, outBufferHandles);
}
return error;
}
Error allocate(const IMapper::BufferDescriptorInfo& descriptorInfo,
uint32_t* outStride, buffer_handle_t* outBufferHandle) const
{
return allocate(descriptorInfo, 1, outStride, outBufferHandle);
}
private:
const Mapper& mMapper;
sp<IAllocator> mAllocator;
};
} // namespace GrallocWrapper
} // namespace android
#endif
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