public static UInt16 RotateImageViaInPlaceBitmapMetadataWriter(string filename, UInt16 prevOrient)
{
// InPlaceBitmapMetadataWriter allows us to modify the metadata (exif) directly to the original file (without a temp file)
// assuming there is enough space, otherwise padding must be added. For orientation the space is constant, so it should
// always work if the orientation field already exists
UInt16 orient = 1;
orient = (UInt16)GetNextRotationOrientation(prevOrient); // get new rotation
// This only works for jpg photos
if (!filename.EndsWith("jpg"))
{
Console.WriteLine("The file you passed in is not a JPEG.");
throw new ArgumentException("The file you passed in is not a JPEG:\n " + filename, "filename");
}
// This code is based on http://blogs.msdn.com/b/rwlodarc/archive/2007/07/18/using-wpf-s-inplacebitmapmetadatawriter.aspx
using (Stream originalFile = File.Open(filename, FileMode.Open, FileAccess.ReadWrite))
{
ConsoleColor originalColor = Console.ForegroundColor;
BitmapDecoder output = BitmapDecoder.Create(originalFile, BitmapCreateOptions.None, BitmapCacheOption.Default);
InPlaceBitmapMetadataWriter metadata = output.Frames[0].CreateInPlaceBitmapMetadataWriter();
// Within the InPlaceBitmapMetadataWriter, you can add, update, or remove metadata.
if (!metadata.ContainsQuery("/app1"))
{
metadata.SetQuery("/app1", new BitmapMetadata("app1"));
}
if (!metadata.ContainsQuery("/app1/{ushort=0}"))
{
metadata.SetQuery("/app1/{ushort=0}", new BitmapMetadata("ifd"));
}
metadata.SetQuery("/app1/{ushort=0}/{ushort=274}", orient); //set next rotation
if (metadata.TrySave())
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("InPlaceMetadataWriter succeeded!");
}
else
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("InPlaceMetadataWriter failed!");
throw new Exception("Rotate Image failed. Try to 'S' (Show in Folder) and manually rotate it.");
}
Console.ForegroundColor = originalColor;
return(orient);
}
}
private void CreateAndShowMainWindow()
{
// Create the application's main window
mainWindow = new Window();
mainWindow.Title = "Image Metadata";
// <SnippetSetQuery>
Stream pngStream = new System.IO.FileStream("smiley.png", FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
PngBitmapDecoder pngDecoder = new PngBitmapDecoder(pngStream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
BitmapFrame pngFrame = pngDecoder.Frames[0];
InPlaceBitmapMetadataWriter pngInplace = pngFrame.CreateInPlaceBitmapMetadataWriter();
if (pngInplace.TrySave() == true)
{
pngInplace.SetQuery("/Text/Description", "Have a nice day.");
}
pngStream.Close();
// </SnippetSetQuery>
// Draw the Image
Image myImage = new Image();
myImage.Source = new BitmapImage(new Uri("smiley.png", UriKind.Relative));
myImage.Stretch = Stretch.None;
myImage.Margin = new Thickness(20);
// <SnippetGetQuery>
// Add the metadata of the bitmap image to the text block.
TextBlock myTextBlock = new TextBlock();
myTextBlock.Text = "The Description metadata of this image is: " + pngInplace.GetQuery("/Text/Description").ToString();
// </SnippetGetQuery>
// Define a StackPanel to host Controls
StackPanel myStackPanel = new StackPanel();
myStackPanel.Orientation = Orientation.Vertical;
myStackPanel.Height = 200;
myStackPanel.VerticalAlignment = VerticalAlignment.Top;
myStackPanel.HorizontalAlignment = HorizontalAlignment.Center;
// Add the Image and TextBlock to the parent Grid
myStackPanel.Children.Add(myImage);
myStackPanel.Children.Add(myTextBlock);
// Add the StackPanel as the Content of the Parent Window Object
mainWindow.Content = myStackPanel;
mainWindow.Show();
}
// ReSharper disable once InconsistentNaming
public static void WriteIPTC(string filename, IIPTCModel iptc)
{
Console.WriteLine($"{iptc.ByLine} {iptc.Caption} {iptc.CopyrightNotice} {iptc.Headline} {iptc.Keywords}");
string filePath = Path.Combine(Constants.PicPath, filename);
using (Stream fs = new FileStream(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
{
JpegBitmapDecoder decoder = new JpegBitmapDecoder(fs, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
BitmapFrame frame = decoder.Frames[0];
var metadata = frame.Metadata.Clone() as BitmapMetadata;
InPlaceBitmapMetadataWriter jpgInPlace = frame.CreateInPlaceBitmapMetadataWriter();
if (jpgInPlace != null)
{
jpgInPlace.SetQuery(@"/app13/irb/8bimiptc/iptc/caption", iptc.Caption);
jpgInPlace.SetQuery(@"/app13/irb/8bimiptc/iptc/keywords", iptc.Keywords);
jpgInPlace.SetQuery(@"/app13/irb/8bimiptc/iptc/by-line", iptc.ByLine);
jpgInPlace.SetQuery(@"/app13/irb/8bimiptc/iptc/copyright notice", iptc.CopyrightNotice);
jpgInPlace.SetQuery(@"/app13/irb/8bimiptc/iptc/headline", iptc.Headline);
}
fs.Close();
}
}
public void SaveBitmap(Bitmap bitmap)
{
const string filetype = ".png";
string filename = DateTime.Today.Year.ToString() + "_" + DateTime.Today.Month.ToString() + "_" + DateTime.Today.Day.ToString();
filename = Path.Combine(screenshotFolder, filename);
if (File.Exists(filename + filetype))
{
var ExistingImage = Image.FromFile(filename + filetype);
int n = 1;
while (File.Exists(filename + "(" + n.ToString() + ")" + filetype))
{
n++;
}
filename += "(" + n.ToString() + ")";
}
//FileStream stream = new FileStream(filename + ".png", FileMode.CreateNew);
var prop = (PropertyItem)FormatterServices.GetUninitializedObject(typeof(PropertyItem));
prop.Id = 37510;
prop.Type = 2;
prop.Value = Encoding.UTF8.GetBytes("Hello World!");
prop.Len = prop.Value.Length;
bitmap.SetPropertyItem(prop);
bitmap.Save(filename + filetype);
BitmapMetadata data;
//FileStream stream = new FileStream(filename + filetype, FileMode.Create);
//BitmapMetadata myBitmapMetadata = new BitmapMetadata("jpeg");
//myBitmapMetadata.Comment = "this is a comment";
//var encoder3 = new JpegBitmapDecoder(stream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.OnLoad);
Stream pngStream = new FileStream(filename + filetype, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
PngBitmapDecoder pngDecoder = new PngBitmapDecoder(pngStream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
BitmapFrame pngFrame = pngDecoder.Frames[0];
InPlaceBitmapMetadataWriter pngInplace = pngFrame.CreateInPlaceBitmapMetadataWriter();
if (pngInplace.TrySave() == true)
{
pngInplace.SetQuery("/Text/Description", "Have a nice day.");
}
pngStream.Close();
//ImageMetadata metadata = new ImageMetadata("blah","erik","fractal","this is a comment");
//SaveEXIFMetadata(bitmap, metadata, filename + ".jpeg");
//SaveEXIFMetadataProperty(bitmap,"hello", filename + ".png");
}
//ajouter des metadata au images
public void AddTags(string filename, string[] tags)
{
//ouvre un stream pour l'image
using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
{
//decode l'image pour récupérer les metadata
BitmapDecoder decoder = BitmapDecoder.Create(fs, BitmapCreateOptions.None, BitmapCacheOption.None);
// saisi les frames bitmap, qui contiennent les metadata
BitmapFrame frame = decoder.Frames[0];
// obtiens les metadata en tant que BitmapMetadata
BitmapMetadata metadata = frame.Metadata as BitmapMetadata;
// instancie InPlaceBitmapMetadataWriter pour écrire les metadata dans l'image
InPlaceBitmapMetadataWriter writer = frame.CreateInPlaceBitmapMetadataWriter();
string[] keys;
//si des metadata existent déjà
if (metadata.Keywords != null)
{
//créé la liste complète des tags, vieux et nouveau
keys = new string[metadata.Keywords.Count + tags.Length];
//récupère les valeurs des textbox
var tag2 = TagWriter2.Text;
int i = 0;
//récupère la valeur des mots clé existant
foreach (string keyword in metadata.Keywords)
{
keys[i] = keyword;
i++;
}
// récupère la valeur des nouveaus mots clé
foreach (string tag in tags)
{
keys[i] = tag;
i++;
}
//écrit les nouvelles metadata dans l'image
writer.SetQuery("System.Keywords", keys);
writer.SetQuery("System.Author", tag2);
}
//si il n'y a pas de metadata existante
else
{
keys = tags;
//récupère les valeurs des textbox
var Tag = TagWriter.Text;
var tag2 = TagWriter2.Text;
//écrit les nouvelles metadata dans l'image
writer.SetQuery("System.Title", Tag);
writer.SetQuery("System.Author", tag2);
}
//si il n'y a pas d'espace pour stocké les nouvelles metadata
if (!writer.TrySave())
{
fs.Close();
fs.Dispose();
string test = TagWriter.Text;
SetUpMetadataOnImage(filename, test);
}
}
}
public static void SetImageMetadata(string imagesFolderPath)
{
string originalPath = @"C:\Users\test\Desktop\test.jpg";
string outputPath = Environment.CurrentDirectory + @"\output.jpg";
string finalPath = Environment.CurrentDirectory + @"\output_beforeInPlaceBitmapMetadataWriter.jpg";
BitmapCreateOptions createOptions = BitmapCreateOptions.PreservePixelFormat | BitmapCreateOptions.IgnoreColorProfile;
uint paddingAmount = 2048; // 2Kb padding for this example, but really this can be any value.
// Our recommendation is to keep this between 1Kb and 5Kb as most metadata updates are not large.
// High level overview:
// 1. Perform a lossles transcode on the JPEG
// 2. Add appropriate padding
// 3. Optionally add whatever metadata we need to add initially
// 4. Save the file
// 5. For sanity, we verify that we really did a lossless transcode
// 6. Open the new file and add metadata in-place
using (Stream originalFile = File.Open(originalPath, FileMode.Open, FileAccess.Read))
{
// Notice the BitmapCreateOptions and BitmapCacheOption. Using these options in the manner here
// will inform the JPEG decoder and encoder that we're doing a lossless transcode operation. If the
// encoder is anything but a JPEG encoder, then this no longer is a lossless operation.
// ( Details: Basically BitmapCreateOptions.PreservePixelFormat | BitmapCreateOptions.IgnoreColorProfile
// tell the decoder to use the original image bits and BitmapCacheOption.None tells the decoder to wait
// with decoding. So, at the time of encoding the JPEG encoder understands that the input was a JPEG
// and just copies over the image bits without decompressing and recompressing them. Hence, this is a
// lossless operation. )
BitmapDecoder original = BitmapDecoder.Create(originalFile, createOptions, BitmapCacheOption.None);
if (!original.CodecInfo.FileExtensions.Contains("jpg"))
{
Console.WriteLine("The file you passed in is not a JPEG.");
return;
}
JpegBitmapEncoder output = new JpegBitmapEncoder();
// If you're just interested in doing a lossless transcode without adding metadata, just do this:
//output.Frames = original.Frames;
// If you want to add metadata to the image using the InPlaceBitmapMetadataWriter, first add padding:
if (original.Frames[0] != null && original.Frames[0].Metadata != null)
{
// Your gut feel may want you to do something like:
// output.Frames = original.Frames;
// BitmapMetadata metadata = output.Frames[0].Metadata as BitmapMetadata;
// if (metadata != null)
// {
// metadata.SetQuery("/app1/ifd/PaddingSchema:Padding", paddingAmount);
// }
// However, the BitmapMetadata object is frozen. So, you need to clone the BitmapMetadata and then
// set the padding on it. Lastly, you need to create a "new" frame with the updated metadata.
BitmapMetadata metadata = original.Frames[0].Metadata.Clone() as BitmapMetadata;
// Of the metadata handlers that we ship in WIC, padding can only exist in IFD, EXIF, and XMP.
// Third parties implementing their own metadata handler may wish to support IWICFastMetadataEncoder
// and hence support padding as well.
metadata.SetQuery("/app1/ifd/PaddingSchema:Padding", paddingAmount);
metadata.SetQuery("/app1/ifd/exif/PaddingSchema:Padding", paddingAmount);
metadata.SetQuery("/xmp/PaddingSchema:Padding", paddingAmount);
// Since you're already adding metadata now, you can go ahead and add metadata up front.
metadata.SetQuery("/app1/ifd/{uint=897}", "hello there");
metadata.SetQuery("/app1/ifd/{uint=898}", "this is a test");
metadata.Title = "This is a title";
// Create a new frame identical to the one from the original image, except the metadata will have padding.
// Essentially we want to keep this as close as possible to:
// output.Frames = original.Frames;
output.Frames.Add(BitmapFrame.Create(original.Frames[0], original.Frames[0].Thumbnail, metadata, original.Frames[0].ColorContexts));
}
using (Stream outputFile = File.Open(outputPath, FileMode.Create, FileAccess.ReadWrite))
{
output.Save(outputFile);
}
}
// For sanity, let's verify that the original and the output contain image bits that are the same.
using (Stream originalFile = File.Open(originalPath, FileMode.Open, FileAccess.Read))
{
BitmapDecoder original = BitmapDecoder.Create(originalFile, createOptions, BitmapCacheOption.None);
using (Stream savedFile = File.Open(outputPath, FileMode.Open, FileAccess.Read))
{
BitmapDecoder output = BitmapDecoder.Create(savedFile, createOptions, BitmapCacheOption.None);
Compare(original.Frames[0], output.Frames[0], 0, "foo", Console.Out);
}
}
// Let's copy the file before we use the InPlaceBitmapMetadataWriter so that you can verify the metadata changes.
File.Copy(outputPath, finalPath, true);
Console.WriteLine();
// Now let's use the InPlaceBitmapMetadataWriter.
using (Stream savedFile = File.Open(outputPath, FileMode.Open, FileAccess.ReadWrite))
{
ConsoleColor originalColor = Console.ForegroundColor;
BitmapDecoder output = BitmapDecoder.Create(savedFile, BitmapCreateOptions.None, BitmapCacheOption.Default);
InPlaceBitmapMetadataWriter metadata = output.Frames[0].CreateInPlaceBitmapMetadataWriter();
// Within the InPlaceBitmapMetadataWriter, you can add, update, or remove metadata.
//metadata.SetQuery("/app1/ifd/{uint=899}", "this is a test of the InPlaceBitmapMetadataWriter");
//metadata.RemoveQuery("/app1/ifd/{uint=898}");
//metadata.SetQuery("/app1/ifd/{uint=897}", "Hello there!!");
Console.WriteLine("#####################");
Console.WriteLine(metadata.GetQuery(@"/app13/irb/8bimiptc/iptc/City"));
Console.WriteLine("#####################");
metadata.SetQuery(@"/app13/irb/8bimiptc/iptc/Headline", "TEst");
metadata.SetQuery(@"/app13/irb/8bimiptc/iptc/City", "TEst");
metadata.SetQuery(@"/app13/irb/8bimiptc/iptc/CountryPrimaryLocationName", "TEst");
metadata.SetQuery(@"/app13/irb/8bimiptc/iptc/ByLine", "TEst");
metadata.SetQuery(@"/app13/irb/8bimiptc/iptc/CaptionAbstract", "TEst");
Console.WriteLine("#####################");
Console.WriteLine(metadata.GetQuery(@"/app13/irb/8bimiptc/iptc/City"));
Console.WriteLine("#####################");
if (metadata.TrySave())
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("InPlaceMetadataWriter succeeded!");
}
else
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("InPlaceMetadataWriter failed!");
}
Console.ForegroundColor = originalColor;
}
FileInfo originalInfo = new FileInfo(originalPath);
FileInfo outputInfo = new FileInfo(outputPath);
FileInfo finalInfo = new FileInfo(finalPath);
Console.WriteLine(outputPath);
Console.WriteLine();
Console.WriteLine("Original File Size: \t\t\t{0}", originalInfo.Length);
Console.WriteLine("After Padding File Size: \t\t{0}", outputInfo.Length);
Console.WriteLine("After InPlaceBitmapWriter File Size: \t{0}", finalInfo.Length);
}