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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.
#include "ui/gfx/gpu_memory_buffer.h"
#include "base/logging.h"
#include "build/build_config.h"
#include "ui/gfx/generic_shared_memory_id.h"
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#include "base/win/scoped_handle.h"
#endif
namespace gfx {
#if BUILDFLAG(IS_WIN)
namespace {
base::win::ScopedHandle CloneDXGIHandle(HANDLE handle) {
HANDLE target_handle = nullptr;
if (!::DuplicateHandle(GetCurrentProcess(), handle, GetCurrentProcess(),
&target_handle, 0, FALSE, DUPLICATE_SAME_ACCESS)) {
DVPLOG(1) << "Error duplicating GMB DXGI handle";
}
return base::win::ScopedHandle(target_handle);
}
} // namespace
DXGIHandle DXGIHandle::CreateFakeForTest() {
// DXGIHandle requires a valid HANDLE, so just create a placeholder event.
base::win::ScopedHandle fake_handle(
::CreateEvent(nullptr, FALSE, FALSE, nullptr));
return DXGIHandle(std::move(fake_handle));
}
DXGIHandle::DXGIHandle() = default;
DXGIHandle::~DXGIHandle() = default;
DXGIHandle::DXGIHandle(base::win::ScopedHandle buffer_handle)
: buffer_handle_(std::move(buffer_handle)) {
DCHECK(buffer_handle_.is_valid());
}
DXGIHandle::DXGIHandle(base::win::ScopedHandle buffer_handle,
const DXGIHandleToken& token,
base::UnsafeSharedMemoryRegion region)
: buffer_handle_(std::move(buffer_handle)),
token_(token),
region_(std::move(region)) {
DCHECK(buffer_handle_.is_valid());
}
DXGIHandle::DXGIHandle(DXGIHandle&&) = default;
DXGIHandle& DXGIHandle::operator=(DXGIHandle&&) = default;
bool DXGIHandle::IsValid() const {
return buffer_handle_.is_valid();
}
DXGIHandle DXGIHandle::Clone() const {
DXGIHandle handle;
if (buffer_handle_.is_valid()) {
handle.buffer_handle_ = CloneDXGIHandle(buffer_handle_.Get());
}
handle.token_ = token_;
handle.region_ = region_.Duplicate();
return handle;
}
DXGIHandle DXGIHandle::CloneWithRegion(
base::UnsafeSharedMemoryRegion region) const {
DXGIHandle handle = Clone();
DCHECK(!handle.region_.IsValid());
handle.region_ = std::move(region);
return handle;
}
base::win::ScopedHandle DXGIHandle::TakeBufferHandle() {
DCHECK(buffer_handle_.is_valid());
return std::move(buffer_handle_);
}
#endif // BUILDFLAG(IS_WIN)
GpuMemoryBufferHandle::GpuMemoryBufferHandle() = default;
GpuMemoryBufferHandle::GpuMemoryBufferHandle(
base::UnsafeSharedMemoryRegion region)
: type(GpuMemoryBufferType::SHARED_MEMORY_BUFFER),
region_(std::move(region)) {
CHECK(region_.IsValid(), base::NotFatalUntil::M141);
}
#if BUILDFLAG(IS_WIN)
GpuMemoryBufferHandle::GpuMemoryBufferHandle(DXGIHandle handle)
: type(GpuMemoryBufferType::DXGI_SHARED_HANDLE),
dxgi_handle_(std::move(handle)) {
CHECK(dxgi_handle_.IsValid());
}
#endif
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
GpuMemoryBufferHandle::GpuMemoryBufferHandle(
NativePixmapHandle native_pixmap_handle)
: type(GpuMemoryBufferType::NATIVE_PIXMAP),
native_pixmap_handle_(std::move(native_pixmap_handle)) {}
#endif
#if BUILDFLAG(IS_ANDROID)
GpuMemoryBufferHandle::GpuMemoryBufferHandle(
base::android::ScopedHardwareBufferHandle handle)
: type(GpuMemoryBufferType::ANDROID_HARDWARE_BUFFER),
android_hardware_buffer(std::move(handle)) {}
#endif
// TODO(crbug.com/40584691): Reset |type| and possibly the handles on the
// moved-from object.
GpuMemoryBufferHandle::GpuMemoryBufferHandle(GpuMemoryBufferHandle&& other) =
default;
GpuMemoryBufferHandle& GpuMemoryBufferHandle::operator=(
GpuMemoryBufferHandle&& other) = default;
GpuMemoryBufferHandle::~GpuMemoryBufferHandle() = default;
void GpuMemoryBuffer::MapAsync(base::OnceCallback<void(bool)> result_cb) {
std::move(result_cb).Run(Map());
}
bool GpuMemoryBuffer::AsyncMappingIsNonBlocking() const {
return false;
}
GpuMemoryBufferHandle GpuMemoryBufferHandle::Clone() const {
GpuMemoryBufferHandle handle;
handle.type = type;
handle.id = id;
handle.offset = offset;
handle.stride = stride;
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
handle.native_pixmap_handle_ = CloneHandleForIPC(native_pixmap_handle_);
#elif BUILDFLAG(IS_APPLE)
handle.io_surface = io_surface;
#elif BUILDFLAG(IS_WIN)
handle.dxgi_handle_ = dxgi_handle_.Clone();
#elif BUILDFLAG(IS_ANDROID)
NOTIMPLEMENTED();
#endif
handle.region_ = region_.Duplicate();
return handle;
}
} // namespace gfx
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