public bool Optimize(Stream stream, ImageOptimizationMode optimizationMode)
{
if (stream.CanSeek && stream.CanRead)
{
if (optimizationMode != ImageOptimizationMode.None)
{
ImageMagick.ImageOptimizer optimizer = new ImageMagick.ImageOptimizer {
IgnoreUnsupportedFormats = true
};
if (optimizationMode == ImageOptimizationMode.Maximum)
{
optimizer.OptimalCompression = true;
}
bool result;
if (optimizationMode == ImageOptimizationMode.Lossless)
{
result = optimizer.LosslessCompress(stream);
}
else
{
result = optimizer.Compress(stream);
}
return(result);
}
}
return(false);
}
public bool Optimize(Stream stream, ImageOptimizationMode optimizationMode)
{
if (stream.CanRead && stream.CanSeek)
{
WuQuantizer quantizer = new WuQuantizer();
using (Bitmap bitmap = (Bitmap)Image.FromStream(stream)) {
using (Image quantized = quantizer.QuantizeImage(bitmap)) {
stream.Seek(0, SeekOrigin.Begin);
stream.SetLength(0);
quantized.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
}
}
return(true);
}
return(false);
}
public static bool Optimize(this IImageOptimizer imageOptimizer, string inputFilePath, string outputFilePath, ImageOptimizationMode optimizationMode)
{
using (MemoryStream ms = new MemoryStream()) {
using (FileStream inputStream = new FileStream(inputFilePath, FileMode.Open, FileAccess.Read))
inputStream.CopyTo(ms);
ms.Seek(0, SeekOrigin.Begin);
bool success = imageOptimizer.Optimize(ms, optimizationMode);
if (success)
{
ms.Seek(0, SeekOrigin.Begin);
using (FileStream outputStream = new FileStream(outputFilePath, FileMode.Create, FileAccess.Write))
ms.CopyTo(outputStream);
}
return(success);
}
}
