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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_IPC_COMMON_DXGI_HELPERS_H_
#define GPU_IPC_COMMON_DXGI_HELPERS_H_
#include <d3d11_1.h>
#include <dxgi.h>
#include <wrl/client.h>
#include "base/containers/span.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "gpu/ipc/common/gpu_ipc_common_export.h"
namespace gpu {
// This helper class can be used to securely unmap texture.
// Create one after successful ID3D11DeviceContext::Map() with the
// mapped texture and device context.
// Upon destruction the texture will be automatically unmapped.
class GPU_IPC_COMMON_EXPORT D3D11ScopedTextureUnmap {
public:
D3D11ScopedTextureUnmap(Microsoft::WRL::ComPtr<ID3D11DeviceContext> context,
Microsoft::WRL::ComPtr<ID3D11Texture2D> texture);
D3D11ScopedTextureUnmap(const D3D11ScopedTextureUnmap&) = delete;
D3D11ScopedTextureUnmap& operator=(const D3D11ScopedTextureUnmap&) = delete;
~D3D11ScopedTextureUnmap();
private:
Microsoft::WRL::ComPtr<ID3D11DeviceContext> context_;
Microsoft::WRL::ComPtr<ID3D11Texture2D> texture_;
};
// This helper class can be used to securely release KeyedMutex.
// Create one after successful acquisition of the keyed mutex.
// Upon destruction the mutex would be automatically released.
class GPU_IPC_COMMON_EXPORT DXGIScopedReleaseKeyedMutex {
public:
DXGIScopedReleaseKeyedMutex(
Microsoft::WRL::ComPtr<IDXGIKeyedMutex> keyed_mutex,
UINT64 key);
DXGIScopedReleaseKeyedMutex(const DXGIScopedReleaseKeyedMutex&) = delete;
DXGIScopedReleaseKeyedMutex& operator=(const DXGIScopedReleaseKeyedMutex&) =
delete;
~DXGIScopedReleaseKeyedMutex();
private:
Microsoft::WRL::ComPtr<IDXGIKeyedMutex> keyed_mutex_;
UINT64 key_ = 0;
};
// Copies |dxgi_handle| data to |shared_memory| using provided D3D11 device, and
// a staging texture. The texture may be recreated if it has wrong size or
// format. Returns true if succeeded.
GPU_IPC_COMMON_EXPORT bool CopyDXGIBufferToShMem(
HANDLE dxgi_handle,
base::span<uint8_t> shared_memory,
ID3D11Device* d3d11_device,
Microsoft::WRL::ComPtr<ID3D11Texture2D>* staging_texture);
// Copies from |input_texture| to |dst_buffer| using provided D3D11 device, and
// a staging texture. The staging texture may be recreated if it does not match
// input texture size or format. Returns true if succeeded.
GPU_IPC_COMMON_EXPORT bool CopyD3D11TexToMem(
ID3D11Texture2D* input_texture,
base::span<uint8_t> dst_buffer,
ID3D11Device* d3d11_device,
Microsoft::WRL::ComPtr<ID3D11Texture2D>* staging_texture);
GPU_IPC_COMMON_EXPORT bool CopyShMemToDXGIBuffer(
base::span<uint8_t> shared_memory,
HANDLE dxgi_handle,
ID3D11Device* d3d11_device);
GPU_IPC_COMMON_EXPORT bool CopyMemToD3D11Tex(uint8_t* src_buffer,
size_t buffer_size,
ID3D11Texture2D* output_texture,
ID3D11Device* d3d11_device);
} // namespace gpu
#endif // GPU_IPC_COMMON_DXGI_HELPERS_H_
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