79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
|
/*
|
||
|
|
* Copyright 2013 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 ANDROID_DISCONNECT_WAITER_H
|
||
|
|
#define ANDROID_DISCONNECT_WAITER_H
|
||
|
|
|
||
|
|
#include <gui/IConsumerListener.h>
|
||
|
|
|
||
|
|
#include <utils/Condition.h>
|
||
|
|
#include <utils/Mutex.h>
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
// Note that GLConsumer will lose the notifications
|
||
|
|
// onBuffersReleased and onFrameAvailable as there is currently
|
||
|
|
// no way to forward the events. This DisconnectWaiter will not let the
|
||
|
|
// disconnect finish until finishDisconnect() is called. It will
|
||
|
|
// also block until a disconnect is called
|
||
|
|
class DisconnectWaiter : public BnConsumerListener {
|
||
|
|
public:
|
||
|
|
DisconnectWaiter () :
|
||
|
|
mWaitForDisconnect(false),
|
||
|
|
mPendingFrames(0) {
|
||
|
|
}
|
||
|
|
|
||
|
|
void waitForFrame() {
|
||
|
|
Mutex::Autolock lock(mMutex);
|
||
|
|
while (mPendingFrames == 0) {
|
||
|
|
mFrameCondition.wait(mMutex);
|
||
|
|
}
|
||
|
|
mPendingFrames--;
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual void onFrameAvailable() {
|
||
|
|
Mutex::Autolock lock(mMutex);
|
||
|
|
mPendingFrames++;
|
||
|
|
mFrameCondition.signal();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual void onBuffersReleased() {
|
||
|
|
Mutex::Autolock lock(mMutex);
|
||
|
|
while (!mWaitForDisconnect) {
|
||
|
|
mDisconnectCondition.wait(mMutex);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void finishDisconnect() {
|
||
|
|
Mutex::Autolock lock(mMutex);
|
||
|
|
mWaitForDisconnect = true;
|
||
|
|
mDisconnectCondition.signal();
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
Mutex mMutex;
|
||
|
|
|
||
|
|
bool mWaitForDisconnect;
|
||
|
|
Condition mDisconnectCondition;
|
||
|
|
|
||
|
|
int mPendingFrames;
|
||
|
|
Condition mFrameCondition;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace android
|
||
|
|
|
||
|
|
#endif
|