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Unified Diff: components/exo/exo_compositor_frame_sink.cc

Issue 2493223002: Change exo::SurfaceFactoryOwner to exo::ExoCompositorFrameSink (Closed)
Patch Set: Undid a change on an if condition in exo::Surface::CommitSurfaceHierarchy() Created 4 years ago
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Index: components/exo/exo_compositor_frame_sink.cc
diff --git a/components/exo/exo_compositor_frame_sink.cc b/components/exo/exo_compositor_frame_sink.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b41a2e20f19bb1631a24d033d1b43917f6958f46
--- /dev/null
+++ b/components/exo/exo_compositor_frame_sink.cc
@@ -0,0 +1,135 @@
+// 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 "components/exo/exo_compositor_frame_sink.h"
+
+#include "base/debug/stack_trace.h"
+#include "cc/surfaces/surface_manager.h"
+
+namespace exo {
+
+////////////////////////////////////////////////////////////////////////////////
+// ExoComopositorFrameSink, public:
+
+ExoCompositorFrameSink::ExoCompositorFrameSink(
+ const cc::FrameSinkId& frame_sink_id,
+ cc::SurfaceManager* surface_manager,
+ cc::mojom::MojoCompositorFrameSinkClientPtr client)
+ : frame_sink_id_(frame_sink_id),
+ surface_manager_(surface_manager),
+ surface_factory_(frame_sink_id, surface_manager, this),
+ client_(std::move(client)) {
+ surface_manager_->RegisterFrameSinkId(frame_sink_id_);
+ surface_manager_->RegisterSurfaceFactoryClient(frame_sink_id_, this);
+}
+
+ExoCompositorFrameSink::~ExoCompositorFrameSink() {
+ surface_factory_.EvictSurface();
+ surface_manager_->UnregisterSurfaceFactoryClient(frame_sink_id_);
+ surface_manager_->InvalidateFrameSinkId(frame_sink_id_);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// cc::SurfaceFactoryClient overrides:
+
+void ExoCompositorFrameSink::ReturnResources(
+ const cc::ReturnedResourceArray& resources) {
+ if (resources.empty())
+ return;
+
+ if (!ack_pending_count_ && client_) {
+ client_->ReclaimResources(resources);
+ return;
+ }
+
+ std::copy(resources.begin(), resources.end(),
+ std::back_inserter(surface_returned_resources_));
+}
+
+void ExoCompositorFrameSink::WillDrawSurface(const cc::LocalFrameId& id,
+ const gfx::Rect& damage_rect) {
+ if (client_)
+ client_->WillDrawSurface();
+}
+
+void ExoCompositorFrameSink::SetBeginFrameSource(
+ cc::BeginFrameSource* begin_frame_source) {
+ if (begin_frame_source_ && added_frame_observer_) {
+ begin_frame_source_->RemoveObserver(this);
+ added_frame_observer_ = false;
+ }
+ begin_frame_source_ = begin_frame_source;
+ UpdateNeedsBeginFrameInternal();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// cc::mojom::MojoCompositorFrameSink overrides:
+
+void ExoCompositorFrameSink::SetNeedsBeginFrame(bool needs_begin_frame) {
+ needs_begin_frame_ = needs_begin_frame;
+ UpdateNeedsBeginFrameInternal();
+}
+
+void ExoCompositorFrameSink::SubmitCompositorFrame(
+ const cc::LocalFrameId& local_frame_id,
+ cc::CompositorFrame frame) {
+ ++ack_pending_count_;
+ surface_factory_.SubmitCompositorFrame(
+ local_frame_id, std::move(frame),
+ base::Bind(&ExoCompositorFrameSink::DidReceiveCompositorFrameAck,
+ base::Unretained(this)));
+ last_local_frame_id_ = local_frame_id;
+}
+
+void ExoCompositorFrameSink::EvictFrame() {
+ surface_factory_.EvictSurface();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// cc::BeginFrameObserver overrides:
+
+void ExoCompositorFrameSink::OnBeginFrame(const cc::BeginFrameArgs& args) {
+ UpdateNeedsBeginFrameInternal();
+ last_begin_frame_args_ = args;
+ if (client_)
+ client_->OnBeginFrame(args);
+}
+
+const cc::BeginFrameArgs& ExoCompositorFrameSink::LastUsedBeginFrameArgs()
+ const {
+ return last_begin_frame_args_;
+}
+
+void ExoCompositorFrameSink::OnBeginFrameSourcePausedChanged(bool paused) {}
+
+////////////////////////////////////////////////////////////////////////////////
+// ExoComopositorFrameSink, private:
+
+void ExoCompositorFrameSink::UpdateNeedsBeginFrameInternal() {
+ if (!begin_frame_source_)
+ return;
+
+ if (needs_begin_frame_ == added_frame_observer_)
+ return;
+
+ added_frame_observer_ = needs_begin_frame_;
+ if (needs_begin_frame_)
+ begin_frame_source_->AddObserver(this);
+ else
+ begin_frame_source_->RemoveObserver(this);
+}
+
+void ExoCompositorFrameSink::DidReceiveCompositorFrameAck() {
+ if (!client_)
+ return;
+ client_->DidReceiveCompositorFrameAck();
+ DCHECK_GT(ack_pending_count_, 0);
+ if (!surface_returned_resources_.empty()) {
+ client_->ReclaimResources(surface_returned_resources_);
+ surface_returned_resources_.clear();
+ }
+ ack_pending_count_--;
+}
+
+} // namespace exo

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