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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.
#include "ui/gl/dcomp_surface_registry.h"
#include "base/logging.h"
#include "base/no_destructor.h"
namespace gl {
DCOMPSurfaceRegistry* DCOMPSurfaceRegistry::GetInstance() {
static base::NoDestructor<DCOMPSurfaceRegistry> instance;
return instance.get();
}
DCOMPSurfaceRegistry::DCOMPSurfaceRegistry() = default;
DCOMPSurfaceRegistry::~DCOMPSurfaceRegistry() = default;
base::UnguessableToken DCOMPSurfaceRegistry::RegisterDCOMPSurfaceHandle(
base::win::ScopedHandle surface) {
DVLOG(1) << __func__;
base::UnguessableToken token = base::UnguessableToken::Create();
DCHECK(surface_handle_map_.find(token) == surface_handle_map_.end());
surface_handle_map_[token] = std::move(surface);
DVLOG(1) << __func__ << ": Surface handle registered with token " << token;
return token;
}
void DCOMPSurfaceRegistry::UnregisterDCOMPSurfaceHandle(
const base::UnguessableToken& token) {
DVLOG(1) << __func__;
surface_handle_map_.erase(token);
}
base::win::ScopedHandle DCOMPSurfaceRegistry::TakeDCOMPSurfaceHandle(
const base::UnguessableToken& token) {
DVLOG(1) << __func__;
auto surface_iter = surface_handle_map_.find(token);
if (surface_iter != surface_handle_map_.end()) {
// Take ownership.
auto surface_handle = std::move(surface_iter->second);
surface_handle_map_.erase(surface_iter);
return surface_handle;
}
DLOG(ERROR) << __func__ << ": No surface handle found for token " << token;
return base::win::ScopedHandle();
}
} // namespace gl
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