| /* |
| * Copyright (C) 2012 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_DISPLAY_HARDWARE_BASE_H |
| #define ANDROID_DISPLAY_HARDWARE_BASE_H |
| |
| #include <stdint.h> |
| #include <utils/RefBase.h> |
| #include <utils/threads.h> |
| #include "Barrier.h" |
| |
| namespace android { |
| |
| class SurfaceFlinger; |
| |
| class DisplayHardwareBase |
| { |
| public: |
| DisplayHardwareBase( |
| const sp<SurfaceFlinger>& flinger, |
| uint32_t displayIndex); |
| |
| ~DisplayHardwareBase(); |
| |
| // console management |
| void releaseScreen() const; |
| void acquireScreen() const; |
| bool isScreenAcquired() const; |
| |
| bool canDraw() const; |
| |
| |
| private: |
| class DisplayEventThread : public Thread { |
| wp<SurfaceFlinger> mFlinger; |
| mutable Barrier mBarrier; |
| status_t waitForFbSleep(); |
| status_t waitForFbWake(); |
| public: |
| DisplayEventThread(const sp<SurfaceFlinger>& flinger); |
| virtual ~DisplayEventThread(); |
| virtual void onFirstRef(); |
| virtual bool threadLoop(); |
| status_t releaseScreen() const; |
| status_t initCheck() const; |
| }; |
| |
| sp<DisplayEventThread> mDisplayEventThread; |
| mutable int mScreenAcquired; |
| }; |
| |
| }; // namespace android |
| |
| #endif // ANDROID_DISPLAY_HARDWARE_BASE_H |