| /* |
| * Copyright (C) 2011 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 __PIPE_EVENT_H__ |
| #define __PIPE_EVENT_H__ |
| |
| #include <media/stagefright/foundation/ABase.h> |
| |
| namespace android { |
| |
| class PipeEvent { |
| public: |
| PipeEvent(); |
| ~PipeEvent(); |
| |
| bool initCheck() const { |
| return ((pipe_[0] >= 0) && (pipe_[1] >= 0)); |
| } |
| |
| int getWakeupHandle() const { return pipe_[0]; } |
| |
| // block until the event fires; returns true if the event fired and false if |
| // the wait timed out. Timeout is expressed in milliseconds; negative |
| // values mean wait forever. |
| bool wait(int timeout = -1); |
| |
| void clearPendingEvents(); |
| void setEvent(); |
| |
| private: |
| int pipe_[2]; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(PipeEvent); |
| }; |
| |
| } // namespace android |
| |
| #endif // __PIPE_EVENT_H__ |