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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/graphics/surface_layer_bridge.h"
#include "base/feature_list.h"
#include "cc/layers/layer.h"
#include "cc/layers/solid_color_layer.h"
#include "cc/layers/surface_layer.h"
#include "components/viz/common/surfaces/surface_id.h"
#include "components/viz/common/surfaces/surface_info.h"
#include "media/base/media_switches.h"
#include "third_party/blink/public/platform/interface_provider.h"
#include "third_party/blink/public/platform/modules/frame_sinks/embedded_frame_sink.mojom-blink.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/platform/web_layer_tree_view.h"
#include "third_party/blink/renderer/platform/mojo/mojo_helper.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
#include "ui/gfx/geometry/size.h"
namespace blink {
SurfaceLayerBridge::SurfaceLayerBridge(WebLayerTreeView* layer_tree_view,
WebSurfaceLayerBridgeObserver* observer)
: observer_(observer),
binding_(this),
frame_sink_id_(Platform::Current()->GenerateFrameSinkId()),
parent_frame_sink_id_(layer_tree_view ? layer_tree_view->GetFrameSinkId()
: viz::FrameSinkId()) {
mojom::blink::EmbeddedFrameSinkProviderPtr provider;
Platform::Current()->GetInterfaceProvider()->GetInterface(
mojo::MakeRequest(&provider));
// TODO(xlai): Ensure OffscreenCanvas commit() is still functional when a
// frame-less HTML canvas's document is reparenting under another frame.
// See crbug.com/683172.
blink::mojom::blink::EmbeddedFrameSinkClientPtr client;
binding_.Bind(mojo::MakeRequest(&client));
provider->RegisterEmbeddedFrameSink(parent_frame_sink_id_, frame_sink_id_,
std::move(client));
}
SurfaceLayerBridge::~SurfaceLayerBridge() {
observer_ = nullptr;
}
void SurfaceLayerBridge::ClearSurfaceId() {
current_surface_id_ = viz::SurfaceId();
cc::SurfaceLayer* surface_layer =
static_cast<cc::SurfaceLayer*>(cc_layer_.get());
if (!surface_layer)
return;
// We reset the Ids if we lose the context_provider (case: GPU process ended)
// If we destroyed the surface_layer before that point, we need not update
// the ids.
surface_layer->SetPrimarySurfaceId(viz::SurfaceId(),
cc::DeadlinePolicy::UseDefaultDeadline());
surface_layer->SetFallbackSurfaceId(viz::SurfaceId());
}
void SurfaceLayerBridge::CreateSolidColorLayer() {
cc_layer_ = cc::SolidColorLayer::Create();
cc_layer_->SetBackgroundColor(SK_ColorTRANSPARENT);
if (observer_)
observer_->RegisterContentsLayer(cc_layer_.get());
}
void SurfaceLayerBridge::OnFirstSurfaceActivation(
const viz::SurfaceInfo& surface_info) {
if (!current_surface_id_.is_valid() && surface_info.is_valid()) {
// First time a SurfaceId is received.
current_surface_id_ = surface_info.id();
if (cc_layer_) {
if (observer_)
observer_->UnregisterContentsLayer(cc_layer_.get());
cc_layer_->RemoveFromParent();
}
scoped_refptr<cc::SurfaceLayer> surface_layer = cc::SurfaceLayer::Create();
surface_layer->SetPrimarySurfaceId(
surface_info.id(), cc::DeadlinePolicy::UseDefaultDeadline());
surface_layer->SetFallbackSurfaceId(surface_info.id());
surface_layer->SetStretchContentToFillBounds(true);
surface_layer->SetIsDrawable(true);
cc_layer_ = surface_layer;
if (observer_)
observer_->RegisterContentsLayer(cc_layer_.get());
} else if (current_surface_id_ != surface_info.id()) {
// A different SurfaceId is received, prompting change to existing
// SurfaceLayer.
current_surface_id_ = surface_info.id();
cc::SurfaceLayer* surface_layer =
static_cast<cc::SurfaceLayer*>(cc_layer_.get());
surface_layer->SetPrimarySurfaceId(
surface_info.id(), cc::DeadlinePolicy::UseDefaultDeadline());
surface_layer->SetFallbackSurfaceId(surface_info.id());
}
if (observer_) {
observer_->OnWebLayerUpdated();
observer_->OnSurfaceIdUpdated(surface_info.id());
}
cc_layer_->SetBounds(surface_info.size_in_pixels());
}
} // namespace blink
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