using System.IO; using System.Windows.Media.Imaging; namespace CBR.Core.Helpers { /// <summary> /// Class to manage image to stream conversion and revert /// </summary> internal class StreamToImage { /// <summary> /// Return a memory stream from a BitmapImage /// </summary> /// <param name="imageSource"></param> /// <returns></returns> static public MemoryStream GetStreamFromImage(BitmapImage imageSource) { MemoryStream memStream = new MemoryStream(); JpegBitmapEncoder encoder = new JpegBitmapEncoder(); encoder.Frames.Add(BitmapFrame.Create(imageSource)); encoder.Save(memStream); return memStream; } /// <summary> /// Create a BitmapImage from a memory stream /// </summary> /// <param name="stream"></param> /// <param name="?"></param> /// <returns></returns> static public BitmapImage GetImageFromStreamBug( MemoryStream stream ) { return GetImageFromStreamBug( stream, 0 ); } /// <summary> /// Create a BitmapImage from a stream with the specified width (height ratio kept) if not zero /// </summary> /// <param name="stream"></param> /// <returns></returns> static public BitmapImage GetImageFromStreamBug(MemoryStream stream, int width) { MemoryStream stream2 = new MemoryStream(); stream.WriteTo(stream2); stream.Flush(); stream.Close(); stream2.Position = 0; BitmapImage myImage = new BitmapImage(); myImage.BeginInit(); myImage.StreamSource = stream2; if (width != 0) myImage.DecodePixelWidth = width; myImage.EndInit(); //stream.Close(); stream = null; stream2 = null; return myImage; } /// <summary> /// Create a BitmapImage from a stream with the specified width (height ratio kept) if not zero /// </summary> /// <param name="stream"></param> /// <param name="resize"></param> /// <returns></returns> static public BitmapImage GetImageFromStream( Stream stream, int width ) { BitmapImage myImage = new BitmapImage(); myImage.BeginInit(); myImage.StreamSource = stream; if (width != 0) myImage.DecodePixelWidth = width; myImage.EndInit(); return myImage; } static public byte[] BufferFromImage(BitmapImage imageSource) { MemoryStream memStream = new MemoryStream(); JpegBitmapEncoder encoder = new JpegBitmapEncoder(); encoder.Frames.Add(BitmapFrame.Create(imageSource)); encoder.Save(memStream); return memStream.GetBuffer(); } } }
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