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 static Bitmap FromWic(IWICBitmapSource source)
{
Guid format; //Get the WIC pixel format
source.GetPixelFormat(out format);
//Get the matching GDI format
PixelFormat gdiFormat = ConversionUtils.GetPixelFormat(format);
//If it's not GDI-supported format, convert it to one.
IWICComponentFactory factory = null;
IWICFormatConverter converter = null;
try {
if (gdiFormat == PixelFormat.Undefined)
{
factory = (IWICComponentFactory) new WICImagingFactory();
converter = factory.CreateFormatConverter();
converter.Initialize(source, Consts.GUID_WICPixelFormat32bppBGRA, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.9f, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
gdiFormat = PixelFormat.Format32bppArgb;
}
IWICBitmapSource data = converter != null ? converter : source;
//Get the dimensions of the WIC bitmap
uint w, h;
data.GetSize(out w, out h);
Bitmap b = new Bitmap((int)w, (int)h, gdiFormat);
BitmapData bd = b.LockBits(new Rectangle(0, 0, (int)w, (int)h), ImageLockMode.WriteOnly, b.PixelFormat);
try {
long result = CopyPixels(data, IntPtr.Zero, (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0);
if (result == 0x80070057)
{
throw new ArgumentException();
}
if (result < 0)
{
throw new Exception("HRESULT " + result);
}
return(b);
} finally {
b.UnlockBits(bd);
}
} finally {
if (converter != null)
{
Marshal.ReleaseComObject(converter);
}
if (factory != null)
{
Marshal.ReleaseComObject(factory);
}
}
}
public static byte[] WicResize(IWICComponentFactory factory, byte[] photoBytes, int width, int height, int quality)
{
IWICBitmapDecoder decoder = null;
var inputStream = factory.CreateStream();
try {
inputStream.InitializeFromMemory(photoBytes, (uint)photoBytes.Length);
decoder = factory.CreateDecoderFromStream(inputStream, null,
WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
return(WicResize(factory, decoder.GetFrame(0), width, height, quality));
} finally {
Marshal.ReleaseComObject(decoder);
Marshal.ReleaseComObject(inputStream);
}
}
public static byte[] WicResize(IWICComponentFactory factory, byte[] photoBytes, int width, int height, int quality)
{
IWICBitmapDecoder decoder = null ;
var inputStream = factory.CreateStream();
try {
inputStream.InitializeFromMemory(photoBytes, (uint)photoBytes.Length);
decoder = factory.CreateDecoderFromStream(inputStream, null,
WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
return WicResize(factory, decoder.GetFrame(0), width, height, quality);
} finally {
Marshal.ReleaseComObject(decoder);
Marshal.ReleaseComObject(inputStream);
}
}
public static IWICBitmap ToWic(IWICComponentFactory factory, Bitmap bit)
{
Guid pixelFormat = ConversionUtils.FromPixelFormat(bit.PixelFormat);
if (pixelFormat == Guid.Empty)
{
throw new NotSupportedException("PixelFormat " + bit.PixelFormat.ToString() + " not supported.");
}
BitmapData bd = bit.LockBits(new Rectangle(0, 0, bit.Width, bit.Height), ImageLockMode.ReadOnly, bit.PixelFormat);
IWICBitmap b = null;
IWICPalette p = null;
try {
//Create WIC bitmap directly from unmanaged memory
long result = CreateBitmapFromMemory(factory, (uint)bit.Width, (uint)bit.Height, ref pixelFormat, (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0, out b);
//b = factory.CreateBitmapFromMemory((uint)bit.Width, (uint)bit.Height, ConversionUtils.FromPixelFormat(bit.PixelFormat), (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0);
if (result == 0x80070057)
{
throw new ArgumentException();
}
if (result < 0)
{
throw new Exception("HRESULT " + result);
}
//Copy the bitmap palette if it exists
var sPalette = bit.Palette;
if (sPalette.Entries.Length > 0)
{
p = factory.CreatePalette();
uint[] colors = new uint[sPalette.Entries.Length];
for (int i = 0; i < sPalette.Entries.Length; i++)
{
colors[i] = (uint)(((sPalette.Entries[i].A << 24) | (sPalette.Entries[i].R << 16) | (sPalette.Entries[i].G << 8) | sPalette.Entries[i].B) & 0xffffffffL);
}
p.InitializeCustom(colors, (uint)colors.Length);
b.SetPalette(p);
}
return(b);
} finally {
bit.UnlockBits(bd);
if (p != null)
{
Marshal.ReleaseComObject(p);
}
}
}
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 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;
}
internal static extern int CreateBitmapFromMemory(IWICComponentFactory factory, uint width, uint height, ref Guid pixelFormatGuid, uint stride, uint cbBufferSize, IntPtr pvPixels, out IWICBitmap ppIBitmap);
public void EncodeToStream(IWICComponentFactory factory, IWICBitmapSource data, Size imageSize, IStream outputStream)
{
//A list of COM objects to destroy
List <object> com = new List <object>();
try {
//Find the GUID of the destination format
Guid guidEncoder = GetOutputFormatWicGuid();
//Find out the data's pixel format
Guid pFormat = Guid.Empty;
data.GetPixelFormat(out pFormat);
//Create the encoder
var encoder = factory.CreateEncoder(guidEncoder, null);
com.Add(encoder);
//And initialize it
encoder.Initialize(outputStream, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache);
// Create the output frame and property bag
IWICBitmapFrameEncode outputFrame;
var propertyBagArray = new IPropertyBag2[1];
encoder.CreateNewFrame(out outputFrame, propertyBagArray); //An array is used instead of an out parameter... I have no idea why
com.Add(outputFrame);
//The property bag is a COM object...
var propBag = propertyBagArray[0];
com.Add(propBag);
//Adjust encoder settings if it's a jpegs
if (guidEncoder.Equals(Consts.GUID_ContainerFormatJpeg))
{
//Jpeg
//ImageQuality 0..1
//"JpegYCrCbSubsampling" WICJpegYCrCbSubsamplingOption.
//Configure encoder settings (see http://msdn.microsoft.com/en-us/library/windows/desktop/ee719871(v=vs.85).aspx#encoderoptions)
var qualityOption = new PROPBAG2[1];
qualityOption[0].pstrName = "ImageQuality";
propBag.Write(1, qualityOption, new object[] { ((float)Math.Max(0, Math.Min(100, Quality))) / 100 });
WICJpegYCrCbSubsamplingOption subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsamplingDefault;
//411 NOT SUPPPORTED BY WIC - only by freeimage
if ("420".Equals(Subsampling))
{
subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsampling420;
}
if ("422".Equals(Subsampling))
{
subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsampling422;
}
if ("444".Equals(Subsampling))
{
subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsampling444;
}
if (subsampling != WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsamplingDefault)
{
var samplingOption = new PROPBAG2[1];
samplingOption[0].pstrName = "JpegYCrCbSubsampling";
samplingOption[0].vt = VarEnum.VT_UI1;
propBag.Write(1, samplingOption, new object[] { (byte)subsampling });
}
}
//PNG interlace
if (guidEncoder.Equals(Consts.GUID_ContainerFormatPng))
{
var interlaceOption = new PROPBAG2[1];
interlaceOption[0].pstrName = "InterlaceOption";
propBag.Write(1, interlaceOption, new object[] { Interlace ?? false });
}
//Apply the property bag
outputFrame.Initialize(propBag);
//Convert the bitmap to the correct pixel format for encoding.
//Jpeg: encodes as GUID_WICPixelFormat24bppBGR or GUID_WICPixelFormat8bppGray.
//If the original pixel format has an alpha chanel, we need to specify a matte color.
//UPDATE - IWICFormatConverter doesn't let you specify a matte color. Disabling code
if (false && guidEncoder.Equals(Consts.GUID_ContainerFormatJpeg))
{
ConversionUtils.HasAlphaAbility(pFormat);
var conv = factory.CreateFormatConverter();
com.Add(conv);
if (conv.CanConvert(pFormat, Consts.GUID_WICPixelFormat24bppBGR))
{
/*dither, pIPalette, alphaThresholdPercent, and paletteTranslate are used to mitigate color loss when
* converting to a reduced bit-depth format. For conversions that do not need these settings, the
* following parameters values should be used: dither set to WICBitmapDitherTypeNone, pIPalette set to NULL,
* alphaThresholdPercent set to 0.0f, and paletteTranslate set to WICBitmapPaletteTypeCustom.*/
conv.Initialize(data, Consts.GUID_WICPixelFormat24bppBGR, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.0f, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
data = conv;
//Oops, we didn't do anything - there's no way to specify a matte color!
}
}
//GIF encodes as GUID_WICPixelFormat8bppIndexed
//If the current format is > 8bpp, quantization may be required, and we may need to manually build the palette with Median Cut.
//PNG encodeds as EVERYTHING! Way too many formats supported.
// If the user is specifying a colors setting, we need to
// convert to GUID_WICPixelFormat8bppIndexed, GUID_WICPixelFormat4bppIndexed, GUID_WICPixelFormat2bppIndexed, or GUID_WICPixelFormat1bppIndexed
if ((guidEncoder.Equals(Consts.GUID_ContainerFormatPng) && this.Colors != -1) || (guidEncoder.Equals(Consts.GUID_ContainerFormatGif)))
{
Guid target = Consts.GUID_WICPixelFormat8bppIndexed;
int colors = this.Colors;
if (colors > 0 && guidEncoder.Equals(Consts.GUID_ContainerFormatPng))
{
if (colors <= 2)
{
target = Consts.GUID_WICPixelFormat1bppIndexed;
}
if (colors <= 4)
{
target = Consts.GUID_WICPixelFormat2bppIndexed;
}
if (colors <= 32)
{
target = Consts.GUID_WICPixelFormat4bppIndexed;
}
}
if (colors < 0)
{
colors = 256;
}
if (colors < 2)
{
colors = 2;
}
if (colors > 256)
{
colors = 256;
}
var conv = factory.CreateFormatConverter();
com.Add(conv);
if (conv.CanConvert(pFormat, target))
{
var palette = factory.CreatePalette();
com.Add(palette);
palette.InitializeFromBitmap(data, (uint)colors, true);
/*dither, pIPalette, alphaThresholdPercent, and paletteTranslate are used to mitigate color loss when
* converting to a reduced bit-depth format. For conversions that do not need these settings, the
* following parameters values should be used: dither set to WICBitmapDitherTypeNone, pIPalette set to NULL,
* alphaThresholdPercent set to 0.0f, and paletteTranslate set to WICBitmapPaletteTypeCustom.*/
conv.Initialize(data, target, this.Dither ? WICBitmapDitherType.WICBitmapDitherTypeErrorDiffusion : WICBitmapDitherType.WICBitmapDitherTypeNone,
palette, 50.0f, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
data = conv;
}
}
//Get size
uint fw, fh;
data.GetSize(out fw, out fh);
//Set destination frame size
outputFrame.SetSize(fw, fh);
// Write the data to the output frame
outputFrame.WriteSource(data, null);
outputFrame.Commit();
encoder.Commit();
} 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 EncodeToStream(IWICComponentFactory factory, IWICBitmapSource data, Size imageSize, IStream outputStream)
{
//A list of COM objects to destroy
List<object> com = new List<object>();
try {
//Find the GUID of the destination format
Guid guidEncoder = GetOutputFormatWicGuid();
//Find out the data's pixel format
Guid pFormat = Guid.Empty;
data.GetPixelFormat(out pFormat);
//Create the encoder
var encoder = factory.CreateEncoder(guidEncoder, null);
com.Add(encoder);
//And initialize it
encoder.Initialize(outputStream, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache);
// Create the output frame and property bag
IWICBitmapFrameEncode outputFrame;
var propertyBagArray = new IPropertyBag2[1];
encoder.CreateNewFrame(out outputFrame, propertyBagArray); //An array is used instead of an out parameter... I have no idea why
com.Add(outputFrame);
//The property bag is a COM object...
var propBag = propertyBagArray[0];
com.Add(propBag);
//Adjust encoder settings if it's a jpegs
if (guidEncoder.Equals(Consts.GUID_ContainerFormatJpeg)) {
//Jpeg
//ImageQuality 0..1
//"JpegYCrCbSubsampling" WICJpegYCrCbSubsamplingOption.
//Configure encoder settings (see http://msdn.microsoft.com/en-us/library/windows/desktop/ee719871(v=vs.85).aspx#encoderoptions)
var qualityOption = new PROPBAG2[1];
qualityOption[0].pstrName = "ImageQuality";
propBag.Write(1, qualityOption, new object[] { ((float)Math.Max(0,Math.Min(100,Quality))) / 100 });
WICJpegYCrCbSubsamplingOption subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsamplingDefault;
//411 NOT SUPPPORTED BY WIC - only by freeimage
if ("420".Equals(Subsampling)) subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsampling420;
if ("422".Equals(Subsampling)) subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsampling422;
if ("444".Equals(Subsampling)) subsampling = WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsampling444;
if (subsampling != WICJpegYCrCbSubsamplingOption.WICJpegYCrCbSubsamplingDefault) {
var samplingOption = new PROPBAG2[1];
samplingOption[0].pstrName = "JpegYCrCbSubsampling";
samplingOption[0].vt = VarEnum.VT_UI1;
propBag.Write(1, samplingOption, new object[] { (byte)subsampling });
}
}
//PNG interlace
if (guidEncoder.Equals(Consts.GUID_ContainerFormatPng)) {
var interlaceOption = new PROPBAG2[1];
interlaceOption[0].pstrName = "InterlaceOption";
propBag.Write(1, interlaceOption, new object[] { Interlace ?? false });
}
//Apply the property bag
outputFrame.Initialize(propBag);
//Convert the bitmap to the correct pixel format for encoding.
//Jpeg: encodes as GUID_WICPixelFormat24bppBGR or GUID_WICPixelFormat8bppGray.
//If the original pixel format has an alpha chanel, we need to specify a matte color.
//UPDATE - IWICFormatConverter doesn't let you specify a matte color. Disabling code
if (false && guidEncoder.Equals(Consts.GUID_ContainerFormatJpeg)) {
ConversionUtils.HasAlphaAbility(pFormat);
var conv = factory.CreateFormatConverter();
com.Add(conv);
if (conv.CanConvert(pFormat, Consts.GUID_WICPixelFormat24bppBGR)) {
/*dither, pIPalette, alphaThresholdPercent, and paletteTranslate are used to mitigate color loss when
* converting to a reduced bit-depth format. For conversions that do not need these settings, the
* following parameters values should be used: dither set to WICBitmapDitherTypeNone, pIPalette set to NULL,
* alphaThresholdPercent set to 0.0f, and paletteTranslate set to WICBitmapPaletteTypeCustom.*/
conv.Initialize(data, Consts.GUID_WICPixelFormat24bppBGR, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.0f, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
data = conv;
//Oops, we didn't do anything - there's no way to specify a matte color!
}
}
//GIF encodes as GUID_WICPixelFormat8bppIndexed
//If the current format is > 8bpp, quantization may be required, and we may need to manually build the palette with Median Cut.
//PNG encodeds as EVERYTHING! Way too many formats supported.
// If the user is specifying a colors setting, we need to
// convert to GUID_WICPixelFormat8bppIndexed, GUID_WICPixelFormat4bppIndexed, GUID_WICPixelFormat2bppIndexed, or GUID_WICPixelFormat1bppIndexed
if ((guidEncoder.Equals(Consts.GUID_ContainerFormatPng) && this.Colors != -1) || (guidEncoder.Equals(Consts.GUID_ContainerFormatGif))) {
Guid target = Consts.GUID_WICPixelFormat8bppIndexed;
int colors = this.Colors;
if (colors > 0 && guidEncoder.Equals(Consts.GUID_ContainerFormatPng)) {
if (colors <= 2) target = Consts.GUID_WICPixelFormat1bppIndexed;
if (colors <= 4) target = Consts.GUID_WICPixelFormat2bppIndexed;
if (colors <= 32) target = Consts.GUID_WICPixelFormat4bppIndexed;
}
if (colors < 0) colors = 256;
if (colors < 2) colors = 2;
if (colors > 256) colors = 256;
var conv = factory.CreateFormatConverter();
com.Add(conv);
if (conv.CanConvert(pFormat, target)) {
var palette = factory.CreatePalette();
com.Add(palette);
palette.InitializeFromBitmap(data, (uint)colors, true);
/*dither, pIPalette, alphaThresholdPercent, and paletteTranslate are used to mitigate color loss when
* converting to a reduced bit-depth format. For conversions that do not need these settings, the
* following parameters values should be used: dither set to WICBitmapDitherTypeNone, pIPalette set to NULL,
* alphaThresholdPercent set to 0.0f, and paletteTranslate set to WICBitmapPaletteTypeCustom.*/
conv.Initialize(data, target, this.Dither ? WICBitmapDitherType.WICBitmapDitherTypeErrorDiffusion : WICBitmapDitherType.WICBitmapDitherTypeNone,
palette, 50.0f, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
data = conv;
}
}
//Get size
uint fw, fh;
data.GetSize(out fw, out fh);
//Set destination frame size
outputFrame.SetSize(fw,fh);
// Write the data to the output frame
outputFrame.WriteSource(data, null);
outputFrame.Commit();
encoder.Commit();
} 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 IWICBitmap ToWic(IWICComponentFactory factory, Bitmap bit)
{
Guid pixelFormat = ConversionUtils.FromPixelFormat(bit.PixelFormat);
if (pixelFormat == Guid.Empty) throw new NotSupportedException("PixelFormat " + bit.PixelFormat.ToString() + " not supported.");
BitmapData bd = bit.LockBits(new Rectangle(0, 0, bit.Width, bit.Height), ImageLockMode.ReadOnly, bit.PixelFormat);
IWICBitmap b = null;
IWICPalette p = null;
try {
//Create WIC bitmap directly from unmanaged memory
long result = CreateBitmapFromMemory(factory, (uint)bit.Width, (uint)bit.Height, ref pixelFormat, (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0, out b);
//b = factory.CreateBitmapFromMemory((uint)bit.Width, (uint)bit.Height, ConversionUtils.FromPixelFormat(bit.PixelFormat), (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0);
if (result == 0x80070057) throw new ArgumentException();
if (result < 0) throw new Exception("HRESULT " + result);
//Copy the bitmap palette if it exists
var sPalette = bit.Palette;
if (sPalette.Entries.Length > 0)
{
p = factory.CreatePalette();
uint[] colors = new uint[sPalette.Entries.Length];
for (int i = 0; i < sPalette.Entries.Length; i++) {
colors[i] = (uint)(((sPalette.Entries[i].A << 24) | (sPalette.Entries[i].R << 16) | (sPalette.Entries[i].G << 8) | sPalette.Entries[i].B) & 0xffffffffL);
}
p.InitializeCustom(colors, (uint)colors.Length);
b.SetPalette(p);
}
return b;
} finally {
bit.UnlockBits(bd);
if(p != null) Marshal.ReleaseComObject(p);
}
}
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();
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;
}
internal static extern int CreateBitmapFromMemory(IWICComponentFactory factory, uint width, uint height, ref Guid pixelFormatGuid, uint stride, uint cbBufferSize, IntPtr pvPixels, out IWICBitmap ppIBitmap);
public void EncodeToStream(IWICComponentFactory factory, IWICBitmapSource data, IStream outputStream)
{
//A list of COM objects to destroy
List <object> com = new List <object>();
try
{
//Find the GUID of the destination format
Guid guidEncoder = Consts.GUID_ContainerFormatJpeg;
//Find out the data's pixel format
Guid pFormat = Guid.Empty;
data.GetPixelFormat(out pFormat);
//Create the encoder
var encoder = factory.CreateEncoder(guidEncoder, null);
com.Add(encoder);
//And initialize it
encoder.Initialize(outputStream, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache);
// Create the output frame and property bag
IWICBitmapFrameEncode outputFrame;
var propertyBagArray = new IPropertyBag2[1];
encoder.CreateNewFrame(out outputFrame, propertyBagArray); //An array is used instead of an out parameter... I have no idea why
com.Add(outputFrame);
//The property bag is a COM object...
var propBag = propertyBagArray[0];
com.Add(propBag);
//Adjust encoder settings if it's a jpegs
if (guidEncoder.Equals(Consts.GUID_ContainerFormatJpeg))
{
//Configure encoder settings (see http://msdn.microsoft.com/en-us/library/windows/desktop/ee719871(v=vs.85).aspx#encoderoptions)
var qualityOption = new PROPBAG2[1];
qualityOption[0].pstrName = "ImageQuality";
qualityOption[0].vt = VarEnum.VT_R4;
object qualityValue = ((float)90) / 100;
propBag.Write(1, qualityOption, new object[] { qualityValue });
}
//Apply the property bag
outputFrame.Initialize(propBag);
//Get size
uint fw, fh;
data.GetSize(out fw, out fh);
//Set destination frame size
outputFrame.SetSize(fw, fh);
// Write the data to the output frame
outputFrame.WriteSource(data, null);
outputFrame.Commit();
encoder.Commit();
}
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 IWICBitmap ToWic(IWICComponentFactory factory, Bitmap bit)
{
Guid pixelFormat = ConversionUtils.FromPixelFormat(bit.PixelFormat);
if (pixelFormat == Guid.Empty) throw new NotSupportedException("PixelFormat " + bit.PixelFormat.ToString() + " not supported.");
BitmapData bd = bit.LockBits(new Rectangle(0, 0, bit.Width, bit.Height), ImageLockMode.ReadOnly, bit.PixelFormat);
IWICBitmap b = null;
try {
//Create WIC bitmap directly from unmanaged memory
long result = CreateBitmapFromMemory(factory, (uint)bit.Width, (uint)bit.Height, ref pixelFormat, (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0, out b);
//b = factory.CreateBitmapFromMemory((uint)bit.Width, (uint)bit.Height, ConversionUtils.FromPixelFormat(bit.PixelFormat), (uint)bd.Stride, (uint)(bd.Stride * bd.Height), bd.Scan0);
if (result == 0x80070057) throw new ArgumentException();
if (result < 0) throw new Exception("HRESULT " + result);
return b;
} finally {
bit.UnlockBits(bd);
}
}
/// <summary>
/// Decodes the image in byte[] data, performs the image proccessing, and encodes it to job.Dest
/// </summary>
/// <param name="data">The buffer containing the encoded image file</param>
/// <param name="lData">The number of bytes to read</param>
/// <param name="job"></param>
/// <param name="supportsTransparency"></param>
/// <returns></returns>
protected virtual RequestedAction BuildJobWic(byte[] data, long lData, ImageJob job, bool supportsTransparency)
{
ResizeSettings settings = job.Settings; ResizeSettings q = settings;
string path = job.SourcePathData;
//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(data, (uint)lData);
com.Add(streamWrapper);
var decoder = factory.CreateDecoderFromStream(streamWrapper, null,
WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
com.Add(decoder);
//Figure out which frame to work with
int frameIndex = 0;
if (!string.IsNullOrEmpty(q["page"]) && !int.TryParse(q["page"], NumberStyles.Number, NumberFormatInfo.InvariantInfo, out frameIndex))
{
if (!string.IsNullOrEmpty(q["frame"]) && !int.TryParse(q["frame"], NumberStyles.Number, NumberFormatInfo.InvariantInfo, out frameIndex))
{
frameIndex = 0;
}
}
//So users can use 1-based numbers
frameIndex--;
if (frameIndex > 0)
{
int frameCount = (int)decoder.GetFrameCount(); //Don't let the user go past the end.
if (frameIndex >= frameCount)
{
frameIndex = frameCount - 1;
}
}
IWICBitmapFrameDecode frame = decoder.GetFrame((uint)Math.Max(0, frameIndex));
com.Add(frame);
WICBitmapInterpolationMode interpolationMode = WICBitmapInterpolationMode.WICBitmapInterpolationModeFant;
if ("nearest".Equals(settings["w.filter"], StringComparison.OrdinalIgnoreCase))
{
interpolationMode = WICBitmapInterpolationMode.WICBitmapInterpolationModeNearestNeighbor;
}
if ("bicubic".Equals(settings["w.filter"], StringComparison.OrdinalIgnoreCase))
{
interpolationMode = WICBitmapInterpolationMode.WICBitmapInterpolationModeCubic;
}
if ("linear".Equals(settings["w.filter"], StringComparison.OrdinalIgnoreCase))
{
interpolationMode = WICBitmapInterpolationMode.WICBitmapInterpolationModeLinear;
}
if ("nearestneighbor".Equals(settings["w.filter"], StringComparison.OrdinalIgnoreCase))
{
interpolationMode = WICBitmapInterpolationMode.WICBitmapInterpolationModeLinear;
}
//Find the original image size
uint origWidth, origHeight;
frame.GetSize(out origWidth, out origHeight);
Size orig = new Size((int)origWidth, (int)origHeight);
Guid pixelFormat;
frame.GetPixelFormat(out pixelFormat);
//Calculate the new size of the image and the canvas.
ImageState state = new ImageState(settings, orig, true);
c.CurrentImageBuilder.Process(state);
Rectangle imageDest = PolygonMath.ToRectangle(PolygonMath.GetBoundingBox(state.layout["image"]));
IWICBitmapSource imageData = frame;
//Are we cropping? then daisy-chain a clipper
if (state.copyRect.Left != 0 || state.copyRect.Top != 0 || state.copyRect.Width != state.originalSize.Width || state.copyRect.Height != state.originalSize.Height)
{
//Cropping is absurdly slow... 4x slower than resizing!
//Cropping after resizing (unintuitively) is faster.
if (imageDest.Width != state.originalSize.Width || imageDest.Height != state.originalSize.Height)
{
double sx = (double)imageDest.Width / (double)state.copyRect.Width;
double sy = (double)imageDest.Height / (double)state.copyRect.Height;
uint uncroppedDestWidth = (uint)Math.Round(sx * state.originalSize.Width);
uint uncroppedDestHeight = (uint)Math.Round(sy * state.originalSize.Height);
var scaler = factory.CreateBitmapScaler();
scaler.Initialize(imageData, uncroppedDestWidth, uncroppedDestHeight, interpolationMode);
com.Add(scaler);
//TODO: cropping is not consistent with GDI.
var clipper = factory.CreateBitmapClipper();
clipper.Initialize(scaler, new WICRect {
X = (int)Math.Floor((double)state.copyRect.X * sx),
Y = (int)Math.Floor((double)state.copyRect.Y * sy),
Width = imageDest.Width,
Height = imageDest.Height
});
com.Add(clipper);
imageData = clipper;
}
else
{
var clipper = factory.CreateBitmapClipper();
clipper.Initialize(imageData, new WICRect {
X = (int)state.copyRect.X, Y = (int)state.copyRect.Y, Width = (int)state.copyRect.Width, Height = (int)state.copyRect.Height
});
com.Add(clipper);
imageData = clipper;
}
//If we're scaling but not cropping.
}
else if (imageDest.Width != state.originalSize.Width || imageDest.Height != state.originalSize.Height)
{
var scaler = factory.CreateBitmapScaler();
scaler.Initialize(imageData, (uint)imageDest.Width, (uint)imageDest.Height, interpolationMode);
com.Add(scaler);
imageData = scaler;
}
//Are we padding? Then we have to do an intermediate write.
if (state.destSize.Width != imageDest.Width || state.destSize.Height != imageDest.Height)
{
byte[] bgcolor = ConversionUtils.ConvertColor(job.Settings.BackgroundColor, pixelFormat);
for (int i = 0; i < bgcolor.Length; i++)
{
bgcolor[i] = 255; //White
}
var padder = new WicBitmapPadder(imageData, imageDest.X, imageDest.Y, state.destSize.Width - (imageDest.X + imageDest.Width), state.destSize.Height - (imageDest.Y + imageDest.Height), bgcolor, null);
imageData = padder;
}
//Now encode imageData and be done with it...
return(Encode(factory, imageData, imageDest.Size, job));
} 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);
}
}
}
