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// Copyright 2014 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 <memory>
#include <set>
#include <unordered_map>
#include "base/callback_forward.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "cc/output/compositor_frame.h"
#include "cc/surfaces/surface_id.h"
#include "cc/surfaces/surface_resource_holder.h"
#include "cc/surfaces/surface_sequence.h"
#include "cc/surfaces/surfaces_export.h"
namespace gfx {
class Size;
namespace cc {
class BeginFrameSource;
class CopyOutputRequest;
class Surface;
class SurfaceFactoryClient;
class SurfaceManager;
// A SurfaceFactory is used to create surfaces that may share resources and
// receive returned resources for frames submitted to those surfaces. Resources
// submitted to frames created by a particular factory will be returned to that
// factory's client when they are no longer being used. This is the only class
// most users of surfaces will need to directly interact with.
class CC_SURFACES_EXPORT SurfaceFactory
: public base::SupportsWeakPtr<SurfaceFactory> {
using DrawCallback = base::Callback<void()>;
SurfaceFactory(SurfaceManager* manager, SurfaceFactoryClient* client);
void Create(const SurfaceId& surface_id);
void Destroy(const SurfaceId& surface_id);
void DestroyAll();
// Set that the current frame on new_id is to be treated as the successor to
// the current frame on old_id for the purposes of calculating damage.
void SetPreviousFrameSurface(const SurfaceId& new_id,
const SurfaceId& old_id);
// A frame can only be submitted to a surface created by this factory,
// although the frame may reference surfaces created by other factories.
// The callback is called the first time this frame is used to draw, or if
// the frame is discarded.
void SubmitCompositorFrame(const SurfaceId& surface_id,
CompositorFrame frame,
const DrawCallback& callback);
void RequestCopyOfSurface(const SurfaceId& surface_id,
std::unique_ptr<CopyOutputRequest> copy_request);
void WillDrawSurface(const SurfaceId& id, const gfx::Rect& damage_rect);
SurfaceFactoryClient* client() { return client_; }
void ReceiveFromChild(const TransferableResourceArray& resources);
void RefResources(const TransferableResourceArray& resources);
void UnrefResources(const ReturnedResourceArray& resources);
SurfaceManager* manager() { return manager_; }
// This can be set to false if resources from this SurfaceFactory don't need
// to have sync points set on them when returned from the Display, for
// example if the Display shares a context with the creator.
bool needs_sync_points() const { return needs_sync_points_; }
void set_needs_sync_points(bool needs) { needs_sync_points_ = needs; }
// SurfaceFactory's owner can call this when it finds out that SurfaceManager
// is no longer alive during destruction.
void DidDestroySurfaceManager() { manager_ = nullptr; }
SurfaceManager* manager_;
SurfaceFactoryClient* client_;
SurfaceResourceHolder holder_;
bool needs_sync_points_;
using OwningSurfaceMap =
std::unordered_map<SurfaceId, std::unique_ptr<Surface>, SurfaceIdHash>;
OwningSurfaceMap surface_map_;
} // namespace cc