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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.
#ifndef CC_SURFACES_SURFACE_AGGREGATOR_H_
#define CC_SURFACES_SURFACE_AGGREGATOR_H_
#include <set>
#include "base/containers/scoped_ptr_hash_map.h"
#include "base/memory/scoped_ptr.h"
#include "cc/quads/render_pass.h"
#include "cc/surfaces/surfaces_export.h"
namespace cc {
class CompositorFrame;
class DelegatedFrameData;
class SurfaceDrawQuad;
class SurfaceManager;
class CC_SURFACES_EXPORT SurfaceAggregator {
public:
explicit SurfaceAggregator(SurfaceManager* manager);
~SurfaceAggregator();
scoped_ptr<CompositorFrame> Aggregate(int surface_id);
private:
DelegatedFrameData* GetReferencedDataForSurfaceID(int surface_id);
RenderPass::Id RemapPassId(RenderPass::Id surface_local_pass_id,
int surface_id);
void HandleSurfaceQuad(const SurfaceDrawQuad* surface_quad,
RenderPass* dest_pass);
void CopySharedQuadState(const SharedQuadState& source_sqs,
const gfx::Transform& content_to_target_transform,
SharedQuadStateList* dest_sqs_list);
void CopyQuadsToPass(const QuadList& source_quad_list,
const SharedQuadStateList& source_shared_quad_state_list,
const gfx::Transform& content_to_target_transform,
RenderPass* dest_pass,
int surface_id);
void CopyPasses(const RenderPassList& source_pass_list, int surface_id);
SurfaceManager* manager_;
class RenderPassIdAllocator;
typedef base::ScopedPtrHashMap<int, RenderPassIdAllocator>
RenderPassIdAllocatorMap;
RenderPassIdAllocatorMap render_pass_allocator_map_;
// The following state is only valid for the duration of one Aggregate call
// and is only stored on the class to avoid having to pass through every
// function call.
// This is the set of surfaces referenced in the aggregation so far, used to
// detect cycles.
std::set<int> referenced_surfaces_;
// This is the pass list for the aggregated frame.
RenderPassList* dest_pass_list_;
DISALLOW_COPY_AND_ASSIGN(SurfaceAggregator);
};
} // namespace cc
#endif // CC_SURFACES_SURFACE_AGGREGATOR_H_
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