| // 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_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_H_ |
| #define CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_H_ |
| |
| #include "base/macros.h" |
| #include "cc/output/overlay_processor.h" |
| |
| namespace cc { |
| |
| class OverlayCandidateValidator; |
| |
| // The underlay strategy looks for a video quad without regard to quads above |
| // it. The video is "underlaid" through a black transparent quad substituted |
| // for the video quad. The overlay content can then be blended in by the |
| // hardware under the the scene. This is only valid for overlay contents that |
| // are fully opaque. |
| class CC_EXPORT OverlayStrategyUnderlay : public OverlayProcessor::Strategy { |
| public: |
| explicit OverlayStrategyUnderlay( |
| OverlayCandidateValidator* capability_checker); |
| ~OverlayStrategyUnderlay() override; |
| |
| bool Attempt(ResourceProvider* resource_provider, |
| RenderPass* render_pass, |
| OverlayCandidateList* candidate_list) override; |
| |
| private: |
| OverlayCandidateValidator* capability_checker_; // Weak. |
| |
| DISALLOW_COPY_AND_ASSIGN(OverlayStrategyUnderlay); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_OUTPUT_OVERLAY_STRATEGY_UNDERLAY_H_ |