private static void ReadMetadataUsingWIC(BitmapMetadata metadata)
{
string comment = WICMetadataHelper.GetEXIFComment(metadata);
if (string.IsNullOrEmpty(comment))
{
Console.WriteLine("EXIF comment not found");
}
else
{
Console.WriteLine("EXIF comment: " + comment);
}
string xmpDesc = WICMetadataHelper.GetXMPDescription(metadata);
if (string.IsNullOrEmpty(xmpDesc))
{
Console.WriteLine("XMP description not found");
}
else
{
Console.WriteLine("XMP description: " + xmpDesc);
}
Console.WriteLine();
}
private static BitmapMetadata GetPersistedWICMetadata(BitmapMetadata original)
{
BitmapMetadata newMetadata = null;
string path = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
try
{
BitmapSource source = BitmapSource.Create(1, 1, 96.0, 96.0, System.Windows.Media.PixelFormats.Gray8, null, new byte[] { 255 }, 1);
TiffBitmapEncoder encoder = new TiffBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(source, null, WICMetadataHelper.ConvertSaveMetaDataFormat(original, encoder), null));
using (FileStream stream = new FileStream(path, FileMode.Create, FileAccess.Write))
{
encoder.Save(stream);
}
using (FileStream stream = new FileStream(path, FileMode.Open, FileAccess.Read))
{
BitmapFrame frame = BitmapFrame.Create(stream);
try
{
BitmapMetadata temp = frame.Metadata as BitmapMetadata;
newMetadata = temp?.Clone();
}
catch (NotSupportedException)
{
}
}
}
finally
{
File.Delete(path);
}
return(newMetadata);
}
private static void Main(string[] args)
{
CommandLineParser parser = new CommandLineParser(args);
if (parser.ShowHelp)
{
Console.WriteLine("Usage: WICMetadataDemo.exe [-dump] [-help] [image].");
}
else
{
string imagePath = parser.ImageFileName;
if (string.IsNullOrWhiteSpace(imagePath))
{
imagePath = Path.Combine(Path.GetDirectoryName(typeof(Program).Assembly.Location), "GreenSquare.jpg");
}
try
{
BitmapFrame frame = BitmapFrame.Create(new Uri(imagePath));
BitmapMetadata metadata = null;
try
{
metadata = frame.Metadata as BitmapMetadata;
}
catch (NotSupportedException)
{
}
if (metadata != null)
{
string format = string.Empty;
try
{
format = metadata.Format; // Some WIC codecs do not implement the format property.
}
catch (ArgumentException)
{
}
catch (NotSupportedException)
{
}
if (parser.DumpMetadata)
{
Console.WriteLine("{0} format WIC metadata\n", string.IsNullOrEmpty(format) ? "Unspecified" : format.ToUpperInvariant());
WICMetadataHelper.DumpToStdOut(metadata);
Console.WriteLine();
}
else
{
TestWICMetadataPersistance(metadata);
TestGDIPlusMetadataPersistance(imagePath);
}
}
else
{
Console.WriteLine("The image does not contain any WIC metadata.\n");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
Console.WriteLine("Press any key to exit.");
Console.ReadLine();
}
