| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef FRAME_DROPPER_H_ |
| |
| #define FRAME_DROPPER_H_ |
| |
| #include <utils/Errors.h> |
| #include <utils/RefBase.h> |
| |
| #include <media/stagefright/foundation/ABase.h> |
| |
| namespace android { |
| |
| struct FrameDropper : public RefBase { |
| // No frames will be dropped until a valid max frame rate is set. |
| FrameDropper(); |
| |
| // maxFrameRate required to be positive. |
| status_t setMaxFrameRate(float maxFrameRate); |
| |
| // Returns false if max frame rate has not been set via setMaxFrameRate. |
| bool shouldDrop(int64_t timeUs); |
| |
| protected: |
| virtual ~FrameDropper(); |
| |
| private: |
| int64_t mDesiredMinTimeUs; |
| int64_t mMinIntervalUs; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(FrameDropper); |
| }; |
| |
| } // namespace android |
| |
| #endif // FRAME_DROPPER_H_ |