frameworks_native/services/surfaceflinger/DisplayUtils.h

/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
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 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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#ifndef ANDROID_DISPLAY_UTILS_H
#define ANDROID_DISPLAY_UTILS_H

#include <stdint.h>
#include <sys/types.h>

#include "Layer.h"
#include "SurfaceFlinger.h"
#include "DisplayHardware/HWComposer.h"
#include "DisplayHardware/VirtualDisplaySurface.h"

// ---------------------------------------------------------------------------

namespace android {

class IGraphicBufferProducer;
class IGraphicBufferConsumer;
class DisplaySurface;

/* Factory Classes */

class DisplayUtils {
  public:
    static DisplayUtils* getInstance() ANDROID_API;
    SurfaceFlinger* getSFInstance() ANDROID_API;
    Layer* getLayerInstance(SurfaceFlinger*, const sp<Client>&,
                            const String8&, uint32_t,
                            uint32_t, uint32_t);
    HWComposer* getHWCInstance(const sp<SurfaceFlinger>& flinger,
                            HWComposer::EventHandler& handler);
    void initVDSInstance(HWComposer* hwc, int32_t hwcDisplayId,
            sp<IGraphicBufferProducer> currentStateSurface, sp<DisplaySurface> &dispSurface,
            sp<IGraphicBufferProducer> &producer, sp<IGraphicBufferProducer> bqProducer,
            sp<IGraphicBufferConsumer> bqConsumer, String8 currentStateDisplayName,
            bool currentStateIsSecure, int currentStateType);
    bool canAllocateHwcDisplayIdForVDS(int usage);
    DisplayUtils();
  private:
    static DisplayUtils* sDisplayUtils;
    static bool sUseExtendedImpls;

    bool createV4L2BasedVirtualDisplay(HWComposer* hwc, int32_t &hwcDisplayId,
                   sp<DisplaySurface> &dispSurface, sp<IGraphicBufferProducer> &producer,
                   sp<IGraphicBufferProducer> currentStateSurface,
                   sp<IGraphicBufferProducer> bqProducer,
                   sp<IGraphicBufferConsumer> bqConsumer, int currentStateType);
};

}; // namespace android

#endif // ANDROID_DISPLAY_UTILS_H