8dc55396fc
Passes the BufferItem for the queued buffer to the onFrameAvailable callback so the consumer can track the BufferQueue's contents. Also adds an onFrameReplaced callback, which is necessary if the consumer wants to do anything more than simple queue length tracking. Bug: 18111837 Change-Id: If9d07229c9b586c668e5f99074e9b63b0468feb0
53 lines
1.3 KiB
C++
53 lines
1.3 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_FRAME_WAITER_H
|
|
#define ANDROID_FRAME_WAITER_H
|
|
|
|
#include <gui/GLConsumer.h>
|
|
|
|
namespace android {
|
|
|
|
class FrameWaiter : public GLConsumer::FrameAvailableListener {
|
|
public:
|
|
FrameWaiter():
|
|
mPendingFrames(0) {
|
|
}
|
|
|
|
void waitForFrame() {
|
|
Mutex::Autolock lock(mMutex);
|
|
while (mPendingFrames == 0) {
|
|
mCondition.wait(mMutex);
|
|
}
|
|
mPendingFrames--;
|
|
}
|
|
|
|
virtual void onFrameAvailable(const BufferItem& /* item */) {
|
|
Mutex::Autolock lock(mMutex);
|
|
mPendingFrames++;
|
|
mCondition.signal();
|
|
}
|
|
|
|
private:
|
|
int mPendingFrames;
|
|
Mutex mMutex;
|
|
Condition mCondition;
|
|
};
|
|
|
|
} // namespace android
|
|
|
|
#endif
|