public static ImageSource CompressToImageSource(this BitmapFrame bmf, int quality)
{
if (bmf.IsNullOrEmpty())
{
return(null);
}
if (quality <= 0)
{
quality = 1;
}
else if (quality > 100)
{
quality = 100;
}
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.QualityLevel = quality;
encoder.Frames.Add(bmf);
using (MemoryStream stream = new MemoryStream())
{
encoder.Save(stream);
BitmapImage bmi = new BitmapImage();
bmi.BeginInit();
bmi.StreamSource = new MemoryStream(stream.ToArray());
bmi.EndInit();
return(bmi);
}
}
public static BitmapFrame Resize(this BitmapFrame frame, int width, int height, BitmapScalingMode mode = BitmapScalingMode.NearestNeighbor)
{
if (frame.IsNullOrEmpty() || width <= 0 || height <= 0)
{
return(null);
}
if (frame.Width == width && frame.Height == height)
{
return((BitmapFrame)frame.Clone());
}
DrawingGroup group = new DrawingGroup();
RenderOptions.SetBitmapScalingMode(group, mode);
group.Children.Add(new ImageDrawing(frame, new Rect(0, 0, width, height)));
DrawingVisual visual = new DrawingVisual();
DrawingContext context = visual.RenderOpen();
context.DrawDrawing(group);
RenderTargetBitmap rtb = new RenderTargetBitmap(width, height, 96, 96, PixelFormats.Default);
context.Close();
rtb.Render(visual);
BitmapFrame result = BitmapFrame.Create(rtb);
return(result);
}
public static Bitmap CompressToBitmap(this BitmapFrame bmf, int quality)
{
if (bmf.IsNullOrEmpty())
{
return(null);
}
if (quality <= 0)
{
quality = 1;
}
else if (quality > 100)
{
quality = 100;
}
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.QualityLevel = quality;
encoder.Frames.Add(bmf);
MemoryStream stream = new MemoryStream();
encoder.Save(stream);
return(stream.ToBitmap());
//return new Bitmap(stream);
}
public static BitmapSource CompressToBitmapSource(this BitmapFrame frame, int quality)
{
if (frame.IsNullOrEmpty())
{
return(null);
}
return((BitmapSource)frame.CompressToImageSource(quality));
}
//not working
public static BitmapFrame Copy(this BitmapFrame frame)
{
if (frame.IsNullOrEmpty())
{
return(null);
}
return(frame.Clone().ToBitmapFrame());
}
public static BitmapFrame Resize(this BitmapFrame frame, int percentage, BitmapScalingMode mode = BitmapScalingMode.NearestNeighbor)
{
if (frame.IsNullOrEmpty() || percentage <= 0)
{
return(null);
}
int width = (int)((decimal)frame.Width).FindValueByPercentages(100, percentage);
int height = (int)((decimal)frame.Height).FindValueByPercentages(100, percentage);
return(frame.Resize(width, height, mode));
}
public static Bitmap ToBitmap(this BitmapFrame frame)
{
if (frame.IsNullOrEmpty())
{
return(null);
}
byte[] data = frame.ToByteArray(BitmapFrameFormatMode.Png);
if (data.IsNullOrEmpty())
{
return(null);
}
return(data.ToBitmap());
}
public static byte[] ToByteArray(this BitmapFrame frame, BitmapFrameFormatMode mode = BitmapFrameFormatMode.Png)
{
if (frame.IsNullOrEmpty())
{
return(null);
}
byte[] result = null;
using (MemoryStream stream = new MemoryStream())
{
BitmapEncoder encoder = mode.GetBitmapEncoder();
if (encoder != null)
{
encoder.Frames.Add(frame);
encoder.Save(stream);
result = stream.ToArray();
}
}
return(result);
}
