cc/output/overlay_strategy_common.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_OUTPUT_OVERLAY_STRATEGY_COMMON_H_
   6 #define CC_OUTPUT_OVERLAY_STRATEGY_COMMON_H_
   7
   8 #include "cc/base/cc_export.h"
   9 #include "cc/output/overlay_candidate.h"
  10 #include "cc/output/overlay_processor.h"
  11
  12 namespace cc {
  13 class OverlayCandidateValidator;
  14 class StreamVideoDrawQuad;
  15 class TextureDrawQuad;
  16 class OverlayCandidate;
  17
  18 class CC_EXPORT OverlayStrategyCommon : public OverlayProcessor::Strategy {
  19  public:
  20   OverlayStrategyCommon(OverlayCandidateValidator* capability_checker,
  21                         ResourceProvider* resource_provider);
  22   ~OverlayStrategyCommon() override;
  23
  24  protected:
  25   bool GetCandidateQuadInfo(const DrawQuad& draw_quad,
  26                             OverlayCandidate* quad_info);
  27
  28   // Returns true if |draw_quad| will not block quads underneath from becoming
  29   // an overlay.
  30   bool IsInvisibleQuad(const DrawQuad* draw_quad);
  31
  32   // Returns true if |draw_quad| is of a known quad type and contains an
  33   // overlayable resource.
  34   bool IsOverlayQuad(const DrawQuad* draw_quad);
  35
  36   bool GetTextureQuadInfo(const TextureDrawQuad& quad,
  37                           OverlayCandidate* quad_info);
  38   bool GetVideoQuadInfo(const StreamVideoDrawQuad& quad,
  39                         OverlayCandidate* quad_info);
  40
  41   OverlayCandidateValidator* capability_checker_;
  42   ResourceProvider* resource_provider_;
  43
  44  private:
  45   DISALLOW_COPY_AND_ASSIGN(OverlayStrategyCommon);
  46 };
  47 }  // namespace cc
  48
  49 #endif  // CC_OUTPUT_OVERLAY_STRATEGY_COMMON_H_