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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.
#ifndef COMPONENTS_VIZ_SERVICE_TRANSITIONS_SURFACE_ANIMATION_MANAGER_H_
#define COMPONENTS_VIZ_SERVICE_TRANSITIONS_SURFACE_ANIMATION_MANAGER_H_
#include <limits>
#include <memory>
#include <vector>
#include "base/containers/flat_map.h"
#include "base/gtest_prod_util.h"
#include "base/time/time.h"
#include "components/viz/common/quads/compositor_frame_transition_directive.h"
#include "components/viz/common/quads/compositor_render_pass.h"
#include "components/viz/common/quads/compositor_render_pass_draw_quad.h"
#include "components/viz/common/resources/resource_id.h"
#include "components/viz/service/frame_sinks/surface_resource_holder.h"
#include "components/viz/service/surfaces/surface_saved_frame.h"
#include "components/viz/service/transitions/transferable_resource_tracker.h"
#include "components/viz/service/viz_service_export.h"
namespace gpu {
class SharedImageInterface;
}
namespace viz {
class Surface;
struct ReturnedResource;
struct TransferableResource;
// This class is responsible for managing a single transition sequence. Each
// sequence has save/animate/release directives in that order. Instances of this
// class are 1:1 with this sequence.
//
// This class is owned by CompositorFrameSinkSupport but can be moved between
// CompositorFrameSinkSupports for transitions between 2 renderer CC instances.
class VIZ_SERVICE_EXPORT SurfaceAnimationManager
: public ReservedResourceDelegate {
public:
using SaveDirectiveCompleteCallback =
base::OnceCallback<void(const CompositorFrameTransitionDirective&)>;
static std::unique_ptr<SurfaceAnimationManager> CreateWithSave(
const CompositorFrameTransitionDirective& directive,
Surface* surface,
gpu::SharedImageInterface* shared_image_interface,
ReservedResourceIdTracker* id_tracker,
SaveDirectiveCompleteCallback sequence_id_finished_callback);
// Replaces ViewTransitionElementResourceIds with corresponding ResourceIds if
// necessary.
static void ReplaceSharedElementResources(
Surface* surface,
const base::flat_map<blink::ViewTransitionToken,
std::unique_ptr<SurfaceAnimationManager>>&
token_to_animation_manager);
~SurfaceAnimationManager() override;
// Returns false if it is invalid to start the animation phase.
bool Animate();
// ReservedResourceDelegate:
void ReceiveFromChild(
const std::vector<TransferableResource>& resources) override;
void RefResources(
const std::vector<TransferableResource>& resources) override;
void UnrefResources(const std::vector<ReturnedResource>& resources) override;
private:
friend class SurfaceAnimationManagerTest;
static bool FilterSharedElementsWithRenderPassOrResource(
std::vector<TransferableResource>* resource_list,
const base::flat_map<ViewTransitionElementResourceId,
CompositorRenderPass*>* element_id_to_pass,
const base::flat_map<blink::ViewTransitionToken,
std::unique_ptr<SurfaceAnimationManager>>*
token_to_animation_manager,
const DrawQuad& quad,
CompositorRenderPass& copy_pass);
SurfaceAnimationManager(
const CompositorFrameTransitionDirective& directive,
Surface* surface,
gpu::SharedImageInterface* shared_image_interface,
ReservedResourceIdTracker* id_tracker,
SaveDirectiveCompleteCallback sequence_id_finished_callback);
void OnSaveDirectiveProcessed(
SaveDirectiveCompleteCallback callback,
const CompositorFrameTransitionDirective& directive);
// Maps the textures cached by the save directive to transferable resources.
// Shared element resource IDs can only be replaced with cached textures after
// this step.
void ImportTextures();
enum class Stage { kPendingCopy, kWaitingForAnimate, kAnimating };
Stage stage_ = Stage::kPendingCopy;
TransferableResourceTracker transferable_resource_tracker_;
SurfaceSavedFrame saved_frame_;
base::flat_set<ViewTransitionElementResourceId> empty_resource_ids_;
std::optional<TransferableResourceTracker::ResourceFrame> saved_textures_;
base::WeakPtrFactory<SurfaceAnimationManager> weak_factory_{this};
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_TRANSITIONS_SURFACE_ANIMATION_MANAGER_H_
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