public static byte[] WicResize(IWICComponentFactory factory, IWICBitmapFrameDecode frame, int width,
int height, int quality)
{
// Prepare output stream to cache file
var outputStream = new MemoryIStream();
// Prepare PNG encoder
var encoder = factory.CreateEncoder(Consts.GUID_ContainerFormatJpeg, null);
encoder.Initialize(outputStream, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache);
// Prepare output frame
IWICBitmapFrameEncode outputFrame;
var arg = new IPropertyBag2[1];
encoder.CreateNewFrame(out outputFrame, arg);
var propBag = arg[0];
var propertyBagOption = new PROPBAG2[1];
propertyBagOption[0].pstrName = "ImageQuality";
propBag.Write(1, propertyBagOption, new object[] { ((float)quality) / 100 });
outputFrame.Initialize(propBag);
double dpiX, dpiY;
frame.GetResolution(out dpiX, out dpiY);
outputFrame.SetResolution(dpiX, dpiY);
uint ow, oh, w, h;
frame.GetSize(out ow, out oh);
if (ow > oh)
{
w = (uint)width;
h = (uint)((double)height * (double)oh / (double)ow);
}
else
{
w = (uint)((double)height * (double)ow / (double)oh);
h = (uint)height;
}
outputFrame.SetSize(w, h);
// Prepare scaler
var scaler = factory.CreateBitmapScaler();
scaler.Initialize(frame, w, h, WICBitmapInterpolationMode.WICBitmapInterpolationModeFant);
// Write the scaled source to the output frame
outputFrame.WriteSource(scaler, new WICRect {
X = 0, Y = 0, Width = (int)width, Height = (int)height
});
outputFrame.Commit();
encoder.Commit();
var outputArray = outputStream.ToArray();
outputStream.Close();
Marshal.ReleaseComObject(outputFrame);
Marshal.ReleaseComObject(scaler);
Marshal.ReleaseComObject(propBag);
Marshal.ReleaseComObject(encoder);
return(outputArray);
}
protected virtual RequestedAction Encode(IWICComponentFactory factory, IWICBitmapSource data, Size imageSize, ImageJob job)
{
WicEncoderPlugin encoder = new WicEncoderPlugin(job.Settings, job.SourcePathData);
//Create the IStream/MemoryStream
var outputStream = new MemoryIStream();
job.ResultInfo["final.width"] = imageSize.Width;
job.ResultInfo["final.height"] = imageSize.Height;
encoder.EncodeToStream(factory, data, imageSize, outputStream);
object dest = job.Dest;
// Try to save the bitmap
if (dest is string)
{
//Make physical and resolve variable references all at the same time.
job.FinalPath = job.ResolveTemplatedPath(job.Dest as string,
delegate(string var) {
if ("ext".Equals(var, StringComparison.OrdinalIgnoreCase))
{
return(encoder.Extension);
}
if ("width".Equals(var, StringComparison.OrdinalIgnoreCase))
{
return(imageSize.Width.ToString());
}
if ("height".Equals(var, StringComparison.OrdinalIgnoreCase))
{
return(imageSize.Height.ToString());
}
return(null);
});
//If requested, auto-create the parent directory(ies)
if (job.CreateParentDirectory)
{
string dirName = Path.GetDirectoryName(job.FinalPath);
if (!Directory.Exists(dirName))
{
Directory.CreateDirectory(dirName);
}
}
using (FileStream fs = new FileStream(job.FinalPath, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None)) {
outputStream.WriteTo(fs);
}
}
else if (dest is Stream)
{
outputStream.WriteTo((Stream)dest);
}
else
{
return(RequestedAction.None);
}
return(RequestedAction.Cancel);
}
public void DecodeResizeAndEncode(byte[] fileBytes, long lData, uint width, uint height, Stream writeTo)
{
//A list of COM objects to destroy
List <object> com = new List <object>();
try {
//Create the factory
IWICComponentFactory factory = (IWICComponentFactory) new WICImagingFactory();
com.Add(factory);
//Wrap the byte[] with a IWICStream instance
var streamWrapper = factory.CreateStream();
streamWrapper.InitializeFromMemory(fileBytes, (uint)lData);
com.Add(streamWrapper);
var decoder = factory.CreateDecoderFromStream(streamWrapper, null,
WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
com.Add(decoder);
IWICBitmapFrameDecode frame = decoder.GetFrame(0);
com.Add(frame);
var scaler = factory.CreateBitmapScaler();
scaler.Initialize(frame, width, height, WICBitmapInterpolationMode.WICBitmapInterpolationModeFant);
com.Add(scaler);
var outputStream = new MemoryIStream();
EncodeToStream(factory, scaler, outputStream);
outputStream.WriteTo(writeTo);
} finally {
//Manually cleanup all the com reference counts, aggressively
while (com.Count > 0)
{
Marshal.ReleaseComObject(com[com.Count - 1]); //In reverse order, so no item is ever deleted out from under another.
com.RemoveAt(com.Count - 1);
}
}
}
public void Write(System.Drawing.Image i, System.IO.Stream s)
{
//A list of COM objects to destroy
List <object> com = new List <object>();
try {
var factory = (IWICComponentFactory) new WICImagingFactory();
com.Add(factory);
Stopwatch conversion = new Stopwatch();
conversion.Start();
IWICBitmap b = ConversionUtils.ToWic(factory, i as Bitmap);
conversion.Stop();
Stopwatch encoding = new Stopwatch();
encoding.Start();
//Prepare output stream
var outputStream = new MemoryIStream();
EncodeToStream(factory, b, i.Size, outputStream);
encoding.Stop();
Stopwatch streaming = new Stopwatch();
streaming.Start();
outputStream.WriteTo(s);
streaming.Stop();
} finally {
//Manually cleanup all the com reference counts, aggressively
while (com.Count > 0)
{
Marshal.ReleaseComObject(com[com.Count - 1]); //In reverse order, so no item is ever deleted out from under another.
com.RemoveAt(com.Count - 1);
}
}
}
public static byte[] WicResize(IWICComponentFactory factory, IWICBitmapFrameDecode frame, int width,
int height, int quality)
{
// Prepare output stream to cache file
var outputStream = new MemoryIStream();
// Prepare PNG encoder
var encoder = factory.CreateEncoder(Consts.GUID_ContainerFormatJpeg, null);
encoder.Initialize(outputStream, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache);
// Prepare output frame
IWICBitmapFrameEncode outputFrame;
var arg = new IPropertyBag2[1];
encoder.CreateNewFrame(out outputFrame, arg);
var propBag = arg[0];
var propertyBagOption = new PROPBAG2[1];
propertyBagOption[0].pstrName = "ImageQuality";
propBag.Write(1, propertyBagOption, new object[] {((float) quality)/100});
outputFrame.Initialize(propBag);
double dpiX, dpiY;
frame.GetResolution(out dpiX, out dpiY);
outputFrame.SetResolution(dpiX, dpiY);
uint ow, oh, w, h;
frame.GetSize(out ow, out oh);
if (ow > oh ) {
w = (uint)width;
h = (uint)((double)height * (double)oh / (double)ow);
} else {
w = (uint)((double)height * (double)ow / (double)oh);
h = (uint)height;
}
outputFrame.SetSize(w, h);
// Prepare scaler
var scaler = factory.CreateBitmapScaler();
scaler.Initialize(frame, w, h, WICBitmapInterpolationMode.WICBitmapInterpolationModeFant);
// Write the scaled source to the output frame
outputFrame.WriteSource(scaler, new WICRect {X = 0, Y = 0, Width = (int) width, Height = (int) height});
outputFrame.Commit();
encoder.Commit();
var outputArray = outputStream.ToArray();
outputStream.Close();
Marshal.ReleaseComObject(outputFrame);
Marshal.ReleaseComObject(scaler);
Marshal.ReleaseComObject(propBag);
Marshal.ReleaseComObject(encoder);
return outputArray;
}