chromium/ui/gfx/gpu_memory_buffer.h

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_GFX_GPU_MEMORY_BUFFER_H_
#define UI_GFX_GPU_MEMORY_BUFFER_H_

#include <stddef.h>
#include <stdint.h>

#include "base/memory/unsafe_shared_memory_region.h"
#include "build/build_config.h"
#include "ui/gfx/buffer_types.h"
#include "ui/gfx/generic_shared_memory_id.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/gfx_export.h"

#if BUILDFLAG(IS_OZONE) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "ui/gfx/native_pixmap_handle.h"
#elif BUILDFLAG(IS_APPLE)
#include "ui/gfx/mac/io_surface.h"
#elif BUILDFLAG(IS_WIN)
#include <optional>

#include "base/types/token_type.h"
#include "base/win/scoped_handle.h"
#elif BUILDFLAG(IS_ANDROID)
#include "base/android/scoped_hardware_buffer_handle.h"
#endif

namespace base {
namespace trace_event {
class ProcessMemoryDump;
class MemoryAllocatorDumpGuid;
}  // namespace trace_event
}  // namespace base

namespace gfx {

class ColorSpace;

enum GpuMemoryBufferType { … };

GpuMemoryBufferId;

#if BUILDFLAG(IS_WIN)
using DXGIHandleToken = base::TokenType<class DXGIHandleTokenTypeMarker>;
#endif

// TODO(crbug.com/40584691): Convert this to a proper class to ensure the state
// is always consistent, particularly that the only one handle is set at the
// same time and it corresponds to |type|.
struct GFX_EXPORT GpuMemoryBufferHandle { … };

// This interface typically correspond to a type of shared memory that is also
// shared with the GPU. A GPU memory buffer can be written to directly by
// regular CPU code, but can also be read by the GPU.
class GFX_EXPORT GpuMemoryBuffer { … };

}  // namespace gfx

#endif  // UI_GFX_GPU_MEMORY_BUFFER_H_