sdm/libs/hwc2/hwc_callbacks.h

/*
 * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *      notice, this list of conditions and the following disclaimer.
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 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials provided
 *      with the distribution.
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 *      from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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#ifndef __HWC_CALLBACKS_H__
#define __HWC_CALLBACKS_H__

#define HWC2_INCLUDE_STRINGIFICATION
#define HWC2_USE_CPP11
#include <hardware/hwcomposer2.h>
#undef HWC2_INCLUDE_STRINGIFICATION
#undef HWC2_USE_CPP11

namespace sdm {

class HWCCallbacks {
 public:
  HWC2::Error Hotplug(hwc2_display_t display, HWC2::Connection state);
  HWC2::Error Refresh(hwc2_display_t display);
  HWC2::Error Vsync(hwc2_display_t display, int64_t timestamp);
  HWC2::Error Register(HWC2::Callback, hwc2_callback_data_t callback_data,
                       hwc2_function_pointer_t pointer);

  bool VsyncCallbackRegistered() { return (vsync_ != nullptr && vsync_data_ != nullptr); }

 private:
  hwc2_callback_data_t hotplug_data_ = nullptr;
  hwc2_callback_data_t refresh_data_ = nullptr;
  hwc2_callback_data_t vsync_data_ = nullptr;

  HWC2_PFN_HOTPLUG hotplug_ = nullptr;
  HWC2_PFN_REFRESH refresh_ = nullptr;
  HWC2_PFN_VSYNC vsync_ = nullptr;
};

}  // namespace sdm

#endif  // __HWC_CALLBACKS_H__