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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_GUI_SURFACE_CONTROL_H
     18 #define ANDROID_GUI_SURFACE_CONTROL_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 #include <utils/KeyedVector.h>
     24 #include <utils/RefBase.h>
     25 #include <utils/threads.h>
     26 
     27 #include <ui/FrameStats.h>
     28 #include <ui/PixelFormat.h>
     29 #include <ui/Region.h>
     30 
     31 #include <gui/ISurfaceComposerClient.h>
     32 #include <math/vec3.h>
     33 
     34 namespace android {
     35 
     36 // ---------------------------------------------------------------------------
     37 
     38 class IGraphicBufferProducer;
     39 class Surface;
     40 class SurfaceComposerClient;
     41 
     42 // ---------------------------------------------------------------------------
     43 
     44 class SurfaceControl : public RefBase
     45 {
     46 public:
     47     static sp<SurfaceControl> readFromParcel(Parcel* parcel);
     48     void writeToParcel(Parcel* parcel);
     49 
     50     static bool isValid(const sp<SurfaceControl>& surface) {
     51         return (surface != 0) && surface->isValid();
     52     }
     53 
     54     bool isValid() {
     55         return mHandle!=0 && mClient!=0;
     56     }
     57 
     58     static bool isSameSurface(
     59             const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs);
     60 
     61     // release surface data from java
     62     void        clear();
     63 
     64     // disconnect any api that's connected
     65     void        disconnect();
     66 
     67     static status_t writeSurfaceToParcel(
     68             const sp<SurfaceControl>& control, Parcel* parcel);
     69 
     70     sp<Surface> getSurface() const;
     71     sp<Surface> createSurface() const;
     72     sp<IBinder> getHandle() const;
     73 
     74     status_t clearLayerFrameStats() const;
     75     status_t getLayerFrameStats(FrameStats* outStats) const;
     76 
     77     sp<SurfaceComposerClient> getClient() const;
     78 
     79 private:
     80     // can't be copied
     81     SurfaceControl& operator = (SurfaceControl& rhs);
     82     SurfaceControl(const SurfaceControl& rhs);
     83 
     84     friend class SurfaceComposerClient;
     85     friend class Surface;
     86 
     87     SurfaceControl(
     88             const sp<SurfaceComposerClient>& client,
     89             const sp<IBinder>& handle,
     90             const sp<IGraphicBufferProducer>& gbp,
     91             bool owned);
     92 
     93     ~SurfaceControl();
     94 
     95     sp<Surface> generateSurfaceLocked() const;
     96     status_t validate() const;
     97     void destroy();
     98 
     99     sp<SurfaceComposerClient>   mClient;
    100     sp<IBinder>                 mHandle;
    101     sp<IGraphicBufferProducer>  mGraphicBufferProducer;
    102     mutable Mutex               mLock;
    103     mutable sp<Surface>         mSurfaceData;
    104     bool                        mOwned;
    105 };
    106 
    107 }; // namespace android
    108 
    109 #endif // ANDROID_GUI_SURFACE_CONTROL_H
    110