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// Copyright 2015 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_OUTPUT_OVERLAY_STRATEGY_COMMON_H_
#define CC_OUTPUT_OVERLAY_STRATEGY_COMMON_H_
#include "cc/base/cc_export.h"
#include "cc/output/overlay_candidate.h"
#include "cc/output/overlay_processor.h"
namespace cc {
class OverlayCandidateValidator;
class StreamVideoDrawQuad;
class TextureDrawQuad;
class OverlayCandidate;
class CC_EXPORT OverlayStrategyCommon : public OverlayProcessor::Strategy {
public:
explicit OverlayStrategyCommon(OverlayCandidateValidator* capability_checker);
~OverlayStrategyCommon() override;
bool Attempt(RenderPassList* render_passes_in_draw_order,
OverlayCandidateList* candidate_list) override;
protected:
bool GetCandidateQuadInfo(const DrawQuad& draw_quad,
OverlayCandidate* quad_info);
// Returns true if |draw_quad| will not block quads underneath from becoming
// an overlay.
bool IsInvisibleQuad(const DrawQuad* draw_quad);
// Returns true if |draw_quad| is of a known quad type and contains an
// overlayable resource.
bool IsOverlayQuad(const DrawQuad* draw_quad);
bool GetTextureQuadInfo(const TextureDrawQuad& quad,
OverlayCandidate* quad_info);
bool GetVideoQuadInfo(const StreamVideoDrawQuad& quad,
OverlayCandidate* quad_info);
virtual bool TryOverlay(OverlayCandidateValidator* capability_checker,
RenderPassList* render_passes_in_draw_order,
OverlayCandidateList* candidate_list,
const OverlayCandidate& candidate,
QuadList::Iterator iter) = 0;
private:
OverlayCandidateValidator* capability_checker_;
DISALLOW_COPY_AND_ASSIGN(OverlayStrategyCommon);
};
} // namespace cc
#endif // CC_OUTPUT_OVERLAY_STRATEGY_COMMON_H_