boo/lib/inputdev/DeviceFinder.cpp

#include "boo/inputdev/DeviceFinder.hpp"

#if _WIN32
#include <Dbt.h>
#include <hidclass.h>
#include <usbiodef.h>
#endif

namespace boo {

DeviceFinder* DeviceFinder::skDevFinder = nullptr;

#if _WIN32 && !WINDOWS_STORE
/* Windows-specific WM_DEVICECHANGED handler */
LRESULT DeviceFinder::winDevChangedHandler(WPARAM wParam, LPARAM lParam) {
  PDEV_BROADCAST_HDR dbh = (PDEV_BROADCAST_HDR)lParam;
  PDEV_BROADCAST_DEVICEINTERFACE dbhi = (PDEV_BROADCAST_DEVICEINTERFACE)lParam;
  DeviceFinder* finder = instance();
  if (!finder)
    return 0;

  if (wParam == DBT_DEVICEARRIVAL) {
    if (dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) {
      DeviceType type = DeviceType::None;
      if (dbhi->dbcc_classguid == GUID_DEVINTERFACE_USB_DEVICE)
        type = DeviceType::USB;
      else if (dbhi->dbcc_classguid == GUID_DEVINTERFACE_HID)
        type = DeviceType::HID;

      if (type != DeviceType::None) {
#ifdef UNICODE
        char devPath[1024];
        wcstombs(devPath, dbhi->dbcc_name, 1024);
        finder->m_listener->_extDevConnect(devPath);
#else
        finder->m_listener->_extDevConnect(dbhi->dbcc_name);
#endif
      }
    }
  } else if (wParam == DBT_DEVICEREMOVECOMPLETE) {
    if (dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) {
      DeviceType type = DeviceType::None;
      if (dbhi->dbcc_classguid == GUID_DEVINTERFACE_USB_DEVICE)
        type = DeviceType::USB;
      else if (dbhi->dbcc_classguid == GUID_DEVINTERFACE_HID)
        type = DeviceType::HID;

      if (type != DeviceType::None) {
#ifdef UNICODE
        char devPath[1024];
        wcstombs(devPath, dbhi->dbcc_name, 1024);
        finder->m_listener->_extDevDisconnect(devPath);
#else
        finder->m_listener->_extDevDisconnect(dbhi->dbcc_name);
#endif
      }
    }
  }

  return 0;
}
#endif

} // namespace boo