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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/frame_sink/frame_sink_host.h"
#include "ash/frame_sink/frame_sink_holder.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "cc/trees/layer_tree_frame_sink.h"
#include "ui/gfx/geometry/rect.h"
namespace ash {
FrameSinkHost::FrameSinkHost() = default;
FrameSinkHost::~FrameSinkHost() {
// If `host_window_` is null, it means that the `host_window_` has already
// been destroyed and we have either destroyed or released the
// `frame_sink_holder_`. Now we just need to release the memory of
// this object.
if (!host_window_) {
return;
}
FrameSinkHolder::DeleteWhenLastResourceHasBeenReclaimed(
std::move(frame_sink_holder_), host_window_);
}
void FrameSinkHost::SetPresentationCallback(PresentationCallback callback) {
frame_sink_holder_->set_presentation_callback(std::move(callback));
}
void FrameSinkHost::Init(aura::Window* host_window) {
InitInternal(host_window, host_window->CreateLayerTreeFrameSink());
}
void FrameSinkHost::InitForTesting(
aura::Window* host_window,
std::unique_ptr<cc::LayerTreeFrameSink> layer_tree_frame_sink) {
InitInternal(host_window, std::move(layer_tree_frame_sink));
}
void FrameSinkHost::InitInternal(
aura::Window* host_window,
std::unique_ptr<cc::LayerTreeFrameSink> layer_tree_frame_sink) {
SetHostWindow(host_window);
InitFrameSinkHolder(host_window, std::move(layer_tree_frame_sink));
}
void FrameSinkHost::InitFrameSinkHolder(
aura::Window* host_window,
std::unique_ptr<cc::LayerTreeFrameSink> layer_tree_frame_sink) {
DCHECK(!frame_sink_holder_) << "FrameSinkHost is already initialized.";
frame_sink_holder_ = std::make_unique<FrameSinkHolder>(
std::move(layer_tree_frame_sink),
base::BindRepeating(&FrameSinkHost::CreateCompositorFrame,
base::Unretained(this)),
base::BindRepeating(&FrameSinkHost::OnFirstFrameRequested,
base::Unretained(this)));
}
void FrameSinkHost::SetHostWindow(aura::Window* host_window) {
DCHECK(!host_window_) << "FrameSinkHost is already initialized.";
DCHECK(host_window);
DCHECK(host_window->parent()) << "Before calling Init(), host_window must be "
"added to the window hierarchy first.";
host_window_ = host_window;
host_window_observation_.Reset();
host_window_observation_.Observe(host_window_);
}
void FrameSinkHost::UpdateSurface(const gfx::Rect& content_rect,
const gfx::Rect& damage_rect,
bool synchonous_draw) {
DCHECK(frame_sink_holder_) << "Call FrameSinkHost::Init() before calling "
"FrameSinkHost::UpdateSurface";
DCHECK(host_window_);
// Turn off auto-update mode as `UpdateSurface()` should only submit one
// frame.
frame_sink_holder_->SetAutoUpdateMode(/*mode=*/false);
content_rect_ = content_rect;
UnionDamage(damage_rect);
if (!damage_rect.IsEmpty()) {
frame_sink_holder_->resource_manager().DamageResources();
}
frame_sink_holder_->SubmitCompositorFrame(synchonous_draw);
}
void FrameSinkHost::AutoUpdateSurface(const gfx::Rect& content_rect,
const gfx::Rect& damage_rect) {
DCHECK(frame_sink_holder_) << "Call FrameSinkHost::Init() before calling "
"FrameSinkHost::UpdateSurface";
DCHECK(host_window_);
content_rect_ = content_rect;
UnionDamage(damage_rect);
if (!damage_rect.IsEmpty()) {
frame_sink_holder_->resource_manager().DamageResources();
}
frame_sink_holder_->SetAutoUpdateMode(/*mode=*/true);
}
void FrameSinkHost::OnWindowDestroying(aura::Window* window) {
// As the `host_window_` is being destroyed, `frame_sink_holder_` should be
// deleted as it will not be able to maintain its connection with display
// compositor since the `LayerTreeFrameSink` gets destroyed with
// `host_window_`.
FrameSinkHolder::DeleteWhenLastResourceHasBeenReclaimed(
std::move(frame_sink_holder_), host_window_);
host_window_observation_.Reset();
host_window_ = nullptr;
}
void FrameSinkHost::OnFirstFrameRequested() {}
} // namespace ash
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