sdm/libs/hwc2/hwc_callbacks.cpp

/*
 * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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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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 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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 */
#include <utils/constants.h>
#include <utils/debug.h>
#include "hwc_callbacks.h"

#define __CLASS__ "HWCCallbacks"

namespace sdm {

HWC2::Error HWCCallbacks::Hotplug(hwc2_display_t display, HWC2::Connection state) {
  std::lock_guard<std::mutex> hotplug_lock(hotplug_mutex_);
  if (!hotplug_) {
    return HWC2::Error::NoResources;
  }
  hotplug_(hotplug_data_, display, INT32(state));
  return HWC2::Error::None;
}

HWC2::Error HWCCallbacks::Refresh(hwc2_display_t display) {
  std::lock_guard<std::mutex> refresh_lock(refresh_mutex_);
  if (!refresh_) {
    return HWC2::Error::NoResources;
  }
  refresh_(refresh_data_, display);
  return HWC2::Error::None;
}

HWC2::Error HWCCallbacks::Vsync(hwc2_display_t display, int64_t timestamp) {
  std::lock_guard<std::mutex> vsync_lock(vsync_mutex_);
  if (!vsync_) {
    return HWC2::Error::NoResources;
  }
  DTRACE_SCOPED();
  vsync_(vsync_data_, display, timestamp);
  return HWC2::Error::None;
}

HWC2::Error HWCCallbacks::Register(HWC2::Callback descriptor, hwc2_callback_data_t callback_data,
                                   hwc2_function_pointer_t pointer) {
  switch (descriptor) {
    case HWC2::Callback::Hotplug: {
      std::lock_guard<std::mutex> hotplug_lock(hotplug_mutex_);
      hotplug_data_ = callback_data;
      hotplug_ = reinterpret_cast<HWC2_PFN_HOTPLUG>(pointer);
    } break;
    case HWC2::Callback::Refresh: {
      std::lock_guard<std::mutex> refresh_lock(refresh_mutex_);
      refresh_data_ = callback_data;
      refresh_ = reinterpret_cast<HWC2_PFN_REFRESH>(pointer);
    } break;
    case HWC2::Callback::Vsync: {
      std::lock_guard<std::mutex> vsync_lock(vsync_mutex_);
      vsync_data_ = callback_data;
      vsync_ = reinterpret_cast<HWC2_PFN_VSYNC>(pointer);
    } break;
    default:
      return HWC2::Error::BadParameter;
  }
  return HWC2::Error::None;
}

}  // namespace sdm