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// Copyright (c) 2012 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.
#ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
#define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
#include "base/basictypes.h"
#include "base/cancelable_callback.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "cc/trees/layer_tree_host_client.h"
#include "cc/trees/layer_tree_host_single_thread_client.h"
#include "content/common/content_export.h"
#include "content/common/gpu/client/context_provider_command_buffer.h"
#include "content/public/browser/android/compositor.h"
#include "gpu/command_buffer/common/capabilities.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "ui/android/resources/resource_manager_impl.h"
#include "ui/android/resources/ui_resource_provider.h"
#include "ui/android/window_android_compositor.h"
class SkBitmap;
struct ANativeWindow;
namespace cc {
class Layer;
class LayerTreeHost;
class OnscreenDisplayClient;
class SurfaceIdAllocator;
class SurfaceManager;
}
namespace content {
class CompositorClient;
// -----------------------------------------------------------------------------
// Browser-side compositor that manages a tree of content and UI layers.
// -----------------------------------------------------------------------------
class CONTENT_EXPORT CompositorImpl
: public Compositor,
public cc::LayerTreeHostClient,
public cc::LayerTreeHostSingleThreadClient,
public ui::WindowAndroidCompositor {
public:
class VSyncObserver {
public:
virtual void OnUpdateVSyncParameters(base::TimeTicks timebase,
base::TimeDelta interval) = 0;
};
CompositorImpl(CompositorClient* client, gfx::NativeWindow root_window);
~CompositorImpl() override;
static bool IsInitialized();
static cc::SurfaceManager* GetSurfaceManager();
static scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator();
void PopulateGpuCapabilities(gpu::Capabilities gpu_capabilities);
void AddObserver(VSyncObserver* observer);
void RemoveObserver(VSyncObserver* observer);
private:
// Compositor implementation.
void SetRootLayer(scoped_refptr<cc::Layer> root) override;
void SetSurface(jobject surface) override;
void setDeviceScaleFactor(float factor) override;
void SetWindowBounds(const gfx::Size& size) override;
void SetHasTransparentBackground(bool flag) override;
void SetNeedsComposite() override;
ui::UIResourceProvider& GetUIResourceProvider() override;
ui::ResourceManager& GetResourceManager() override;
// LayerTreeHostClient implementation.
void WillBeginMainFrame() override {}
void DidBeginMainFrame() override {}
void BeginMainFrame(const cc::BeginFrameArgs& args) override {}
void BeginMainFrameNotExpectedSoon() override {}
void Layout() override;
void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
const gfx::Vector2dF& outer_delta,
const gfx::Vector2dF& elastic_overscroll_delta,
float page_scale,
float top_controls_delta) override {}
void RequestNewOutputSurface() override;
void DidInitializeOutputSurface() override;
void DidFailToInitializeOutputSurface() override;
void WillCommit() override {}
void DidCommit() override;
void DidCommitAndDrawFrame() override {}
void DidCompleteSwapBuffers() override;
void DidCompletePageScaleAnimation() override {}
void RecordFrameTimingEvents(
scoped_ptr<cc::FrameTimingTracker::CompositeTimingSet> composite_events,
scoped_ptr<cc::FrameTimingTracker::MainFrameTimingSet> main_frame_events)
override {}
// LayerTreeHostSingleThreadClient implementation.
void ScheduleComposite() override;
void ScheduleAnimation() override;
void DidPostSwapBuffers() override;
void DidAbortSwapBuffers() override;
// WindowAndroidCompositor implementation.
void AttachLayerForReadback(scoped_refptr<cc::Layer> layer) override;
void RequestCopyOfOutputOnRootLayer(
scoped_ptr<cc::CopyOutputRequest> request) override;
void OnVSync(base::TimeTicks frame_time,
base::TimeDelta vsync_period) override;
void SetNeedsAnimate() override;
void SetWindowSurface(ANativeWindow* window);
void SetVisible(bool visible);
enum CompositingTrigger {
DO_NOT_COMPOSITE,
COMPOSITE_IMMEDIATELY,
COMPOSITE_EVENTUALLY,
};
void PostComposite(CompositingTrigger trigger);
void Composite(CompositingTrigger trigger);
void CreateOutputSurface();
bool WillCompositeThisFrame() const {
return current_composite_task_ &&
!current_composite_task_->callback().is_null();
}
bool DidCompositeThisFrame() const {
return current_composite_task_ &&
current_composite_task_->callback().is_null();
}
bool WillComposite() const {
return WillCompositeThisFrame() ||
composite_on_vsync_trigger_ != DO_NOT_COMPOSITE;
}
void CancelComposite() {
DCHECK(WillComposite());
if (WillCompositeThisFrame())
current_composite_task_->Cancel();
current_composite_task_.reset();
composite_on_vsync_trigger_ = DO_NOT_COMPOSITE;
will_composite_immediately_ = false;
}
void CreateLayerTreeHost();
void OnGpuChannelEstablished();
void OnGpuChannelTimeout();
// root_layer_ is the persistent internal root layer, while subroot_layer_
// is the one attached by the compositor client.
scoped_refptr<cc::Layer> root_layer_;
scoped_refptr<cc::Layer> subroot_layer_;
scoped_ptr<cc::LayerTreeHost> host_;
ui::UIResourceProvider ui_resource_provider_;
ui::ResourceManagerImpl resource_manager_;
scoped_ptr<cc::OnscreenDisplayClient> display_client_;
scoped_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
gfx::Size size_;
bool has_transparent_background_;
float device_scale_factor_;
ANativeWindow* window_;
int surface_id_;
CompositorClient* client_;
gfx::NativeWindow root_window_;
// Used locally to track whether a call to LTH::Composite() did result in
// a posted SwapBuffers().
bool did_post_swapbuffers_;
// Used locally to inhibit ScheduleComposite() during Layout().
bool ignore_schedule_composite_;
// Whether we need to composite in general because of any invalidation or
// explicit request.
bool needs_composite_;
// Whether we need to update animations on the next composite.
bool needs_animate_;
// Whether we posted a task and are about to composite.
bool will_composite_immediately_;
// How we should schedule Composite during the next vsync.
CompositingTrigger composite_on_vsync_trigger_;
// The Composite operation scheduled for the current vsync interval.
scoped_ptr<base::CancelableClosure> current_composite_task_;
// The number of SwapBuffer calls that have not returned and ACK'd from
// the GPU thread.
unsigned int pending_swapbuffers_;
size_t num_successive_context_creation_failures_;
base::TimeDelta vsync_period_;
base::TimeTicks last_vsync_;
base::OneShotTimer<CompositorImpl> establish_gpu_channel_timeout_;
// Whether there is an OutputSurface request pending from the current
// |host_|. Becomes |true| if RequestNewOutputSurface is called, and |false|
// if |host_| is deleted or we succeed in creating *and* initializing an
// OutputSurface (which is essentially the contract with cc).
bool output_surface_request_pending_;
base::ObserverList<VSyncObserver, true> observer_list_;
base::WeakPtrFactory<CompositorImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
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