dolphin/Source/Core/InputCommon/ControllerEmu/ControllerEmu.cpp

// Copyright 2010 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#include "InputCommon/ControllerEmu/ControllerEmu.h"

#include <memory>
#include <mutex>
#include <string>

#include "Common/IniFile.h"

#include "InputCommon/ControlReference/ControlReference.h"
#include "InputCommon/ControllerEmu/Control/Control.h"
#include "InputCommon/ControllerEmu/ControlGroup/ControlGroup.h"
#include "InputCommon/ControllerEmu/ControlGroup/Extension.h"
#include "InputCommon/ControllerInterface/ControllerInterface.h"

namespace ControllerEmu
{
static std::recursive_mutex s_get_state_mutex;

EmulatedController::~EmulatedController() = default;

// This should be called before calling GetState() or State() on a control reference
// to prevent a race condition.
// This is a recursive mutex because UpdateReferences is recursive.
std::unique_lock<std::recursive_mutex> EmulatedController::GetStateLock()
{
  std::unique_lock<std::recursive_mutex> lock(s_get_state_mutex);
  return lock;
}

void EmulatedController::UpdateReferences(const ControllerInterface& devi)
{
  const auto lock = GetStateLock();
  m_default_device_is_connected = devi.HasConnectedDevice(m_default_device);

  for (auto& ctrlGroup : groups)
  {
    for (auto& control : ctrlGroup->controls)
      control->control_ref.get()->UpdateReference(devi, GetDefaultDevice());

    // extension
    if (ctrlGroup->type == GroupType::Extension)
    {
      for (auto& attachment : ((Extension*)ctrlGroup.get())->attachments)
        attachment->UpdateReferences(devi);
    }
  }
}

bool EmulatedController::IsDefaultDeviceConnected() const
{
  return m_default_device_is_connected;
}

const ciface::Core::DeviceQualifier& EmulatedController::GetDefaultDevice() const
{
  return m_default_device;
}

void EmulatedController::SetDefaultDevice(const std::string& device)
{
  ciface::Core::DeviceQualifier devq;
  devq.FromString(device);
  SetDefaultDevice(std::move(devq));
}

void EmulatedController::SetDefaultDevice(ciface::Core::DeviceQualifier devq)
{
  m_default_device = std::move(devq);

  for (auto& ctrlGroup : groups)
  {
    // extension
    if (ctrlGroup->type == GroupType::Extension)
    {
      for (auto& ai : ((Extension*)ctrlGroup.get())->attachments)
      {
        ai->SetDefaultDevice(m_default_device);
      }
    }
  }
}

void EmulatedController::LoadConfig(IniFile::Section* sec, const std::string& base)
{
  std::string defdev = GetDefaultDevice().ToString();
  if (base.empty())
  {
    sec->Get(base + "Device", &defdev, "");
    SetDefaultDevice(defdev);
  }

  for (auto& cg : groups)
    cg->LoadConfig(sec, defdev, base);
}

void EmulatedController::SaveConfig(IniFile::Section* sec, const std::string& base)
{
  const std::string defdev = GetDefaultDevice().ToString();
  if (base.empty())
    sec->Set(/*std::string(" ") +*/ base + "Device", defdev, "");

  for (auto& ctrlGroup : groups)
    ctrlGroup->SaveConfig(sec, defdev, base);
}

void EmulatedController::LoadDefaults(const ControllerInterface& ciface)
{
  // load an empty inifile section, clears everything
  IniFile::Section sec;
  LoadConfig(&sec);

  const std::string& default_device_string = ciface.GetDefaultDeviceString();
  if (!default_device_string.empty())
  {
    SetDefaultDevice(default_device_string);
  }
}
}  // namespace ControllerEmu