add serial-number field

TinyEXIF.cpp

@@ -509,6 +509,11 @@ void EXIFInfo::parseIFDExif(EntryParser& parser) {
 		}
 		break;
 
+	case 0xa431:
+		// Serial number of the camera
+		parser.Fetch(SerialNumber);
+		break;
+
 	case 0xa432:
 		// Focal length and FStop.
 		if (parser.Fetch(LensInfo.FocalLengthMin, 0))
@@ -932,6 +937,7 @@ void EXIFInfo::clear() {
 	ImageDescription  = "";
 	Make              = "";
 	Model             = "";
+	SerialNumber      = "";
 	Software          = "";
 	DateTime          = "";
 	DateTimeOriginal  = "";

TinyEXIF.h

@@ -120,6 +120,7 @@ public:
 	std::string ImageDescription;       // Image description
 	std::string Make;                   // Camera manufacturer's name
 	std::string Model;                  // Camera model
+	std::string SerialNumber;           // Serial number of the body of the camera
 	uint16_t Orientation;               // Image orientation, start of data corresponds to
 									    // 0: unspecified in EXIF data
 									    // 1: upper left of image

main.cpp

@@ -39,6 +39,8 @@ int main(int argc, const char** argv)
 			std::cout << "Description " << imageEXIF.ImageDescription << "\n";
 		if (!imageEXIF.Make.empty() || !imageEXIF.Model.empty())
 			std::cout << "CameraModel " << imageEXIF.Make << " - " << imageEXIF.Model << "\n";
+		if (!imageEXIF.SerialNumber.empty())
+			std::cout << "SerialNumber " << imageEXIF.SerialNumber << "\n";
 		std::cout << "Orientation " << imageEXIF.Orientation << "\n";
 		std::cout << "Resolution " << imageEXIF.XResolution << "x" << imageEXIF.YResolution << "\n";
 		std::cout << "ResolutionUnit " << imageEXIF.ResolutionUnit << "\n";