WmpBitmapEncoder Class
Defines an encoder that is used to encode Microsoft Windows Media Photo images.
Assembly: PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Windows Media Photo is a new codec that provides better image fidelity than JPEG with smaller file sizes and more features. Windows Media Photo images achieve lossy and lossless compression by using a single algorithm. Windows Media Photo images support existing metadata standards. For additional information about this format, see Windows Media Photo Specification.
Windows Media Photo files do not support preview, global thumbnails, frame level thumbnails, or multiple frames.
Encoding does not work in partial trust. See Windows Presentation Foundation Partial Trust Security for information on partial trust.
The following examples show how to decode and encode a Microsoft Windows Media Photo image using the specific WmpBitmapDecoder and WmpBitmapEncoder objects. For the complete sample, see WDP Encoder and Decoder Sample.
This example demonstrates how to decode a Windows Media Photo image using a WmpBitmapDecoder from a Uri.
// Open a Stream and decode a WDP image Stream imageStreamSource = new FileStream("tulipfarm.wdp", FileMode.Open, FileAccess.Read, FileShare.Read); WmpBitmapDecoder decoder = new WmpBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default); BitmapSource bitmapSource = decoder.Frames[0]; // Draw the Image Image myImage = new Image(); myImage.Source = bitmapSource; myImage.Stretch = Stretch.None; myImage.Margin = new Thickness(20);
This example demonstrates how to encode a BitmapSource into a Windows Media Photo image using a WmpBitmapEncoder.
int width = 128; int height = width; int stride = width / 8; byte[] pixels = new byte[height * stride]; // Define the image palette BitmapPalette myPalette = BitmapPalettes.WebPalette; // Creates a new empty image with the pre-defined palette BitmapSource image = BitmapSource.Create( width, height, 96, 96, PixelFormats.Indexed1, myPalette, pixels, stride); FileStream stream = new FileStream("new.wdp", FileMode.Create); WmpBitmapEncoder encoder = new WmpBitmapEncoder(); TextBlock myTextBlock = new TextBlock(); myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString(); encoder.Frames.Add(BitmapFrame.Create(image)); encoder.Save(stream);
System.Windows.Threading.DispatcherObject
System.Windows.Media.Imaging.BitmapEncoder
System.Windows.Media.Imaging.WmpBitmapEncoder
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.