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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/ozone/platform/flatland/flatland_sysmem_buffer_manager.h"
#include <zircon/rights.h>
#include "base/fuchsia/fuchsia_logging.h"
#include "base/fuchsia/koid.h"
#include "base/functional/bind.h"
#include "ui/ozone/platform/flatland/flatland_sysmem_buffer_collection.h"
namespace ui {
namespace {
std::string GetProcessName() {
char name[ZX_MAX_NAME_LEN] = {};
zx_status_t status =
zx::process::self()->get_property(ZX_PROP_NAME, name, sizeof(name));
return (status == ZX_OK) ? std::string(name) : "";
}
} // namespace
FlatlandSysmemBufferManager::FlatlandSysmemBufferManager(
FlatlandSurfaceFactory* flatland_surface_factory)
: flatland_surface_factory_(flatland_surface_factory) {}
FlatlandSysmemBufferManager::~FlatlandSysmemBufferManager() {
Shutdown();
}
void FlatlandSysmemBufferManager::Initialize(
fuchsia::sysmem2::AllocatorHandle sysmem_allocator,
fuchsia::ui::composition::AllocatorHandle flatland_allocator) {
base::AutoLock auto_lock(collections_lock_);
DCHECK(collections_.empty());
DCHECK(!sysmem_allocator_);
sysmem_allocator_.Bind(std::move(sysmem_allocator));
sysmem_allocator_->SetDebugClientInfo(
std::move(fuchsia::sysmem2::AllocatorSetDebugClientInfoRequest{}
.set_name(GetProcessName() + "-FlatlandSysmemBufferManager")
.set_id(base::GetCurrentProcId())));
DCHECK(!flatland_allocator_);
flatland_allocator_.Bind(std::move(flatland_allocator));
flatland_allocator_.set_error_handler(base::LogFidlErrorAndExitProcess(
FROM_HERE, "fuchsia::ui::composition::Allocator"));
}
void FlatlandSysmemBufferManager::Shutdown() {
base::AutoLock auto_lock(collections_lock_);
DCHECK(collections_.empty());
sysmem_allocator_ = nullptr;
flatland_allocator_ = nullptr;
}
scoped_refptr<gfx::NativePixmap>
FlatlandSysmemBufferManager::CreateNativePixmap(VkDevice vk_device,
gfx::Size size,
gfx::BufferFormat format,
gfx::BufferUsage usage) {
gfx::NativePixmapHandle pixmap_handle;
zx::eventpair service_handle;
auto status = zx::eventpair::create(
0, &pixmap_handle.buffer_collection_handle, &service_handle);
ZX_DCHECK(status == ZX_OK, status);
auto collection = base::MakeRefCounted<FlatlandSysmemBufferCollection>();
if (!collection->Initialize(
sysmem_allocator_.get(), flatland_allocator_.get(),
flatland_surface_factory_, std::move(service_handle),
/*token_channel=*/zx::channel(), size, format, usage, vk_device,
/*min_buffer_count=*/1, usage == gfx::BufferUsage::SCANOUT)) {
return nullptr;
}
auto result = collection->CreateNativePixmap(std::move(pixmap_handle), size);
if (result)
RegisterCollection(collection);
return result;
}
scoped_refptr<FlatlandSysmemBufferCollection>
FlatlandSysmemBufferManager::ImportSysmemBufferCollection(
VkDevice vk_device,
zx::eventpair service_handle,
zx::channel sysmem_token,
gfx::Size size,
gfx::BufferFormat format,
gfx::BufferUsage usage,
size_t min_buffer_count,
bool register_with_flatland_allocator) {
auto result = base::MakeRefCounted<FlatlandSysmemBufferCollection>();
if (!result->Initialize(sysmem_allocator_.get(), flatland_allocator_.get(),
flatland_surface_factory_, std::move(service_handle),
std::move(sysmem_token), size, format, usage,
vk_device, min_buffer_count,
register_with_flatland_allocator)) {
return nullptr;
}
RegisterCollection(result);
return result;
}
void FlatlandSysmemBufferManager::RegisterCollection(
scoped_refptr<FlatlandSysmemBufferCollection> collection) {
{
base::AutoLock auto_lock(collections_lock_);
collections_[collection->id()] = collection;
}
collection->AddOnReleasedCallback(
base::BindOnce(&FlatlandSysmemBufferManager::OnCollectionReleased,
base::Unretained(this), collection->id()));
}
scoped_refptr<FlatlandSysmemBufferCollection>
FlatlandSysmemBufferManager::GetCollectionByHandle(const zx::eventpair& token) {
auto koid = base::GetRelatedKoid(token);
if (!koid)
return nullptr;
base::AutoLock auto_lock(collections_lock_);
auto it = collections_.find(koid.value());
return it == collections_.end() ? nullptr : it->second;
}
void FlatlandSysmemBufferManager::OnCollectionReleased(zx_koid_t id) {
base::AutoLock auto_lock(collections_lock_);
int erased = collections_.erase(id);
DCHECK_EQ(erased, 1);
}
} // namespace ui
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