sdm/libs/hwc2/hwc_callbacks.cpp

/*
 * Copyright (c) 2016-2017, 2019-2020 The Linux Foundation. All rights reserved.
 *
 * 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
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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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);
  pending_refresh_.set(UINT32(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::Vsync_2_4(hwc2_display_t display, int64_t timestamp, uint32_t period) {
  std::lock_guard<std::mutex> vsync_2_4_lock(vsync_2_4_mutex_);
  DTRACE_SCOPED();
  if (!vsync_2_4_) {
    return HWC2::Error::NoResources;
  }

  vsync_2_4_(vsync_2_4_data_, display, timestamp, period);
  return HWC2::Error::None;
}

HWC2::Error HWCCallbacks::VsyncPeriodTimingChanged(
    hwc2_display_t display, hwc_vsync_period_change_timeline_t *updated_timeline) {
  std::lock_guard<std::mutex>
    vsyncPeriodTimingChanged_lock(vsync_period_timing_changed_mutex_);
  DTRACE_SCOPED();
  if (!vsync_period_timing_changed_) {
    return HWC2::Error::NoResources;
  }

  vsync_period_timing_changed_(vsync_period_timing_changed_data_, display, updated_timeline);
  return HWC2::Error::None;
}

HWC2::Error HWCCallbacks::SeamlessPossible(hwc2_display_t display) {
  std::lock_guard<std::mutex> seamlessPossible_lock(seamless_possible_mutex_);
  DTRACE_SCOPED();
  if (!seamless_possible_) {
    return HWC2::Error::NoResources;
  }

  seamless_possible_(seamless_possible_data_, display);
  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;
    case HWC2::Callback::Vsync_2_4:
      {
        std::lock_guard<std::mutex> vsync_2_4_lock(vsync_2_4_mutex_);
        vsync_2_4_data_ = callback_data;
        vsync_2_4_ = reinterpret_cast<HWC2_PFN_VSYNC_2_4>(pointer);
      }
      break;
    case HWC2::Callback::VsyncPeriodTimingChanged:
      {
        std::lock_guard<std::mutex>
          vsyncPeriodTimingChanged_lock(vsync_period_timing_changed_mutex_);
        vsync_period_timing_changed_data_ = callback_data;
        vsync_period_timing_changed_ =
          reinterpret_cast<HWC2_PFN_VSYNC_PERIOD_TIMING_CHANGED>(pointer);
      }
      break;
    case HWC2::Callback::SeamlessPossible:
      {
        std::lock_guard<std::mutex> seamlessPossible_lock(seamless_possible_mutex_);
        seamless_possible_data_ = callback_data;
        seamless_possible_ = reinterpret_cast<HWC2_PFN_SEAMLESS_POSSIBLE>(pointer);
      }
      break;
    default:
      return HWC2::Error::BadParameter;
  }
  return HWC2::Error::None;
}

}  // namespace sdm