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// 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 GPU_IPC_COMMON_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
#define GPU_IPC_COMMON_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
#include <IOSurface/IOSurfaceRef.h>
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include "base/apple/scoped_cftyperef.h"
#include "gpu/ipc/common/gpu_ipc_common_export.h"
#include "gpu/ipc/common/gpu_memory_buffer_impl.h"
#include "ui/gfx/color_space.h"
namespace gpu {
class GpuMemoryBufferSupport;
// Implementation of GPU memory buffer based on IO surfaces.
class GPU_IPC_COMMON_EXPORT GpuMemoryBufferImplIOSurface
: public GpuMemoryBufferImpl {
public:
GpuMemoryBufferImplIOSurface(const GpuMemoryBufferImplIOSurface&) = delete;
GpuMemoryBufferImplIOSurface& operator=(const GpuMemoryBufferImplIOSurface&) =
delete;
~GpuMemoryBufferImplIOSurface() override;
static constexpr gfx::GpuMemoryBufferType kBufferType =
gfx::IO_SURFACE_BUFFER;
static base::OnceClosure AllocateForTesting(
const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage,
gfx::GpuMemoryBufferHandle* handle);
// Overridden from gfx::GpuMemoryBuffer:
bool Map() override;
void* memory(size_t plane) override;
void Unmap() override;
int stride(size_t plane) const override;
void SetColorSpace(const gfx::ColorSpace& color_space) override;
gfx::GpuMemoryBufferType GetType() const override;
gfx::GpuMemoryBufferHandle CloneHandle() const override;
private:
friend GpuMemoryBufferSupport;
static std::unique_ptr<GpuMemoryBufferImplIOSurface> CreateFromHandle(
const gfx::GpuMemoryBufferHandle& handle,
const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage,
DestructionCallback callback);
GpuMemoryBufferImplIOSurface(gfx::GpuMemoryBufferId id,
const gfx::Size& size,
gfx::BufferFormat format,
DestructionCallback callback,
gfx::GpuMemoryBufferHandle handle,
uint32_t lock_flags);
gfx::GpuMemoryBufferHandle handle_;
[[maybe_unused]] const uint32_t lock_flags_;
// Cache the color space because re-assigning the same value can be expensive.
gfx::ColorSpace color_space_;
#if BUILDFLAG(IS_IOS)
// On iOS, we can't use IOKit to access IOSurfaces in the renderer process, so
// we share the memory segment backing the IOSurface as shared memory which is
// then mapped in the renderer process.
base::WritableSharedMemoryMapping shared_memory_mapping_;
#endif
};
} // namespace gpu
#endif // GPU_IPC_COMMON_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
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