string_conversion.cpp

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#include <duvc-ctl/utils/string_conversion.h>
#include <stdexcept>
#include <string>
#include <windows.h>
 
namespace duvc {
 
const char *to_string(CamProp p) {
  switch (p) {
  case CamProp::Pan:
    return "Pan";
  case CamProp::Tilt:
    return "Tilt";
  case CamProp::Roll:
    return "Roll";
  case CamProp::Zoom:
    return "Zoom";
  case CamProp::Exposure:
    return "Exposure";
  case CamProp::Iris:
    return "Iris";
  case CamProp::Focus:
    return "Focus";
  case CamProp::ScanMode:
    return "ScanMode";
  case CamProp::Privacy:
    return "Privacy";
  case CamProp::PanRelative:
    return "PanRelative";
  case CamProp::TiltRelative:
    return "TiltRelative";
  case CamProp::RollRelative:
    return "RollRelative";
  case CamProp::ZoomRelative:
    return "ZoomRelative";
  case CamProp::ExposureRelative:
    return "ExposureRelative";
  case CamProp::IrisRelative:
    return "IrisRelative";
  case CamProp::FocusRelative:
    return "FocusRelative";
  case CamProp::PanTilt:
    return "PanTilt";
  case CamProp::PanTiltRelative:
    return "PanTiltRelative";
  case CamProp::FocusSimple:
    return "FocusSimple";
  case CamProp::DigitalZoom:
    return "DigitalZoom";
  case CamProp::DigitalZoomRelative:
    return "DigitalZoomRelative";
  case CamProp::BacklightCompensation:
    return "BacklightCompensation";
  case CamProp::Lamp:
    return "Lamp";
  default:
    return "Unknown";
  }
}
 
const char *to_string(VidProp p) {
  switch (p) {
  case VidProp::Brightness:
    return "Brightness";
  case VidProp::Contrast:
    return "Contrast";
  case VidProp::Hue:
    return "Hue";
  case VidProp::Saturation:
    return "Saturation";
  case VidProp::Sharpness:
    return "Sharpness";
  case VidProp::Gamma:
    return "Gamma";
  case VidProp::ColorEnable:
    return "ColorEnable";
  case VidProp::WhiteBalance:
    return "WhiteBalance";
  case VidProp::BacklightCompensation:
    return "BacklightCompensation";
  case VidProp::Gain:
    return "Gain";
  default:
    return "Unknown";
  }
}
 
const char *to_string(CamMode m) {
  return (m == CamMode::Auto) ? "AUTO" : "MANUAL";
}
 
const wchar_t *to_wstring(CamProp p) {
  switch (p) {
  case CamProp::Pan:
    return L"Pan";
  case CamProp::Tilt:
    return L"Tilt";
  case CamProp::Roll:
    return L"Roll";
  case CamProp::Zoom:
    return L"Zoom";
  case CamProp::Exposure:
    return L"Exposure";
  case CamProp::Iris:
    return L"Iris";
  case CamProp::Focus:
    return L"Focus";
  case CamProp::ScanMode:
    return L"ScanMode";
  case CamProp::Privacy:
    return L"Privacy";
  case CamProp::PanRelative:
    return L"PanRelative";
  case CamProp::TiltRelative:
    return L"TiltRelative";
  case CamProp::RollRelative:
    return L"RollRelative";
  case CamProp::ZoomRelative:
    return L"ZoomRelative";
  case CamProp::ExposureRelative:
    return L"ExposureRelative";
  case CamProp::IrisRelative:
    return L"IrisRelative";
  case CamProp::FocusRelative:
    return L"FocusRelative";
  case CamProp::PanTilt:
    return L"PanTilt";
  case CamProp::PanTiltRelative:
    return L"PanTiltRelative";
  case CamProp::FocusSimple:
    return L"FocusSimple";
  case CamProp::DigitalZoom:
    return L"DigitalZoom";
  case CamProp::DigitalZoomRelative:
    return L"DigitalZoomRelative";
  case CamProp::BacklightCompensation:
    return L"BacklightCompensation";
  case CamProp::Lamp:
    return L"Lamp";
  default:
    return L"Unknown";
  }
}
 
const wchar_t *to_wstring(VidProp p) {
  switch (p) {
  case VidProp::Brightness:
    return L"Brightness";
  case VidProp::Contrast:
    return L"Contrast";
  case VidProp::Hue:
    return L"Hue";
  case VidProp::Saturation:
    return L"Saturation";
  case VidProp::Sharpness:
    return L"Sharpness";
  case VidProp::Gamma:
    return L"Gamma";
  case VidProp::ColorEnable:
    return L"ColorEnable";
  case VidProp::WhiteBalance:
    return L"WhiteBalance";
  case VidProp::BacklightCompensation:
    return L"BacklightCompensation";
  case VidProp::Gain:
    return L"Gain";
  default:
    return L"Unknown";
  }
}
 
const wchar_t *to_wstring(CamMode m) {
  return (m == CamMode::Auto) ? L"AUTO" : L"MANUAL";
}
 
std::string to_utf8(const std::wstring &wstr) {
  if (wstr.empty()) {
    return std::string();
  }
  int size_needed = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], (int)wstr.size(),
                                        NULL, 0, NULL, NULL);
  if (size_needed == 0) {
    throw std::runtime_error("WideCharToMultiByte failed.");
  }
  std::string str_to(size_needed, 0);
  WideCharToMultiByte(CP_UTF8, 0, &wstr[0], (int)wstr.size(), &str_to[0],
                      size_needed, NULL, NULL);
  return str_to;
}
 
std::wstring to_wstring(const std::string &str) {
#ifdef _WIN32
  if (str.empty())
    return std::wstring();
  
  int size = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, nullptr, 0);
  if (size <= 0)
    return std::wstring();
  
  std::wstring result(size - 1, L'\0');
  MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, &result[0], size);
  return result;
#else
  std::wstring result;
  result.reserve(str.size());
  for (char c : str) {
    result.push_back(static_cast<wchar_t>(static_cast<unsigned char>(c)));
  }
  return result;
#endif
}
 
} // namespace duvc