| // 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_CANDIDATE_VALIDATOR_H_ |
| #define CC_OUTPUT_OVERLAY_CANDIDATE_VALIDATOR_H_ |
| |
| #include <vector> |
| |
| #include "cc/base/cc_export.h" |
| #include "cc/output/overlay_candidate.h" |
| #include "cc/output/overlay_processor.h" |
| |
| namespace cc { |
| |
| // This class that can be used to answer questions about possible overlay |
| // configurations for a particular output device. |
| class CC_EXPORT OverlayCandidateValidator { |
| public: |
| // Populates a list of strategies that may work with this validator. |
| virtual void GetStrategies(OverlayProcessor::StrategyList* strategies) = 0; |
| |
| // Returns true if draw quads can be represented as CALayers (Mac only). |
| virtual bool AllowCALayerOverlays() = 0; |
| |
| // A list of possible overlay candidates is presented to this function. |
| // The expected result is that those candidates that can be in a separate |
| // plane are marked with |overlay_handled| set to true, otherwise they are |
| // to be traditionally composited. Candidates with |overlay_handled| set to |
| // true must also have their |display_rect| converted to integer |
| // coordinates if necessary. |
| virtual void CheckOverlaySupport(OverlayCandidateList* surfaces) = 0; |
| |
| virtual ~OverlayCandidateValidator() {} |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_OUTPUT_OVERLAY_CANDIDATE_VALIDATOR_H_ |