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/*
* 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__
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