53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_FRAME_WAITER_H
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#define ANDROID_FRAME_WAITER_H
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#include <gui/GLConsumer.h>
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namespace android {
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class FrameWaiter : public GLConsumer::FrameAvailableListener {
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public:
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FrameWaiter():
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mPendingFrames(0) {
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}
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void waitForFrame() {
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Mutex::Autolock lock(mMutex);
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while (mPendingFrames == 0) {
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mCondition.wait(mMutex);
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}
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mPendingFrames--;
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}
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virtual void onFrameAvailable(const BufferItem& /* item */) {
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Mutex::Autolock lock(mMutex);
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mPendingFrames++;
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mCondition.signal();
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}
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private:
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int mPendingFrames;
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Mutex mMutex;
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Condition mCondition;
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};
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} // namespace android
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#endif
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