private static unsafe void EncodeImage(PixelBuffer image, WICFlags flags, IWICBitmapFrameEncode frame)
{
Guid pfGuid;
if (!ToWIC(image.Format, out pfGuid))
{
throw new NotSupportedException("Format not supported");
}
frame.Initialize();
frame.SetSize(image.Width, image.Height);
frame.SetResolution(72, 72);
var targetGuid = pfGuid;
frame.SetPixelFormat(ref targetGuid);
if (targetGuid != pfGuid)
{
using (var source = Factory.CreateBitmapFromMemory(image.Width, image.Height, pfGuid, image.RowStride, image.BufferStride, image.DataPointer.ToPointer()))
{
using (var converter = Factory.CreateFormatConverter())
{
using (var palette = Factory.CreatePalette())
{
palette.InitializeFromBitmap(source, 256, true);
converter.Initialize(source, targetGuid, GetWICDither(flags), palette, 0, BitmapPaletteType.Custom);
var bpp = GetBitsPerPixel(targetGuid);
if (bpp == 0)
{
throw new NotSupportedException("Unable to determine the Bpp for the target format");
}
var rowPitch = (image.Width * bpp + 7) / 8;
var slicePitch = rowPitch * image.Height;
var temp = SdxUtilities.AllocateMemory(slicePitch);
try
{
converter.CopyPixels(rowPitch, slicePitch, temp);
frame.SetPalette(palette);
frame.WritePixels(image.Height, temp, rowPitch, slicePitch);
}
finally
{
SdxUtilities.FreeMemory(temp);
}
}
}
}
}
else
{
// No conversion required
frame.WritePixels(image.Height, image.DataPointer, image.RowStride, image.BufferStride);
}
frame.Commit();
}
public static void SetPalette(this IWICBitmapFrameEncode frame, IWICPalette palette)
{
if (frame == null)
{
throw new ArgumentNullException(nameof(frame));
}
frame.SetPalette(palette).ThrowOnError();
}
protected override bool ProcessEncoder(MainForm form, IWICBitmapEncoder encoder, object tag)
{
Tag t = (Tag)tag;
IWICImagingFactory factory = (IWICImagingFactory) new WICImagingFactory();
IWICPalette palette = factory.CreatePalette();
palette.InitializePredefined(WICBitmapPaletteType.WICBitmapPaletteTypeFixedBW, false);
IWICBitmapFrameEncode frame = null;
IWICBitmapFrameEncode frame2 = null;
IPropertyBag2[] bag = new IPropertyBag2[1];
try
{
MethodInfo mi = typeof(IWICBitmapEncoder).GetMethod("CreateNewFrame");
try
{
encoder.CreateNewFrame(out frame, bag);
}
catch (Exception e)
{
form.Add(this, mi.ToString(Resources._0_Failed), new DataEntry(Resources.FrameIndex, 0), new DataEntry(e));
}
if (frame == null)
{
form.Add(this, mi.ToString(Resources._0_NULL), new DataEntry(Resources.Parameter, mi.GetParameters()[0].Name));
}
else
{
if (bag[0] == null)
{
form.Add(this, mi.ToString(Resources._0_NULL), new DataEntry(Resources.Parameter, mi.GetParameters()[1].Name));
}
try
{
frame.Initialize(bag[0]);
frame.SetSize(1, 1);
frame.SetPalette(palette);
Guid pixelFormat = Guid.Empty;
List <Guid> allPixelFormats = new List <Guid>(PixelFormatInfoRule.AllPixelFormats);
allPixelFormats.Add(Consts.GUID_WICPixelFormatDontCare);
foreach (Guid g in allPixelFormats)
{
pixelFormat = g;
frame.SetPixelFormat(ref pixelFormat);
if (g == pixelFormat)
{
if (Array.IndexOf(t.PixelFormats, g) < 0)
{
form.Add(this, string.Format(CultureInfo.CurrentUICulture, Resources.DidNotChangeUnsupportedPixelFormat, "IWICBitmapFrameEncode::SetPixelFormat(...)"), new DataEntry(Resources.PixelFormat, g), new DataEntry(Resources.SupportedPixelFormats, t.PixelFormats));
}
}
else
{
if (Array.IndexOf(t.PixelFormats, g) >= 0)
{
form.Add(this, string.Format(CultureInfo.CurrentUICulture, Resources.ChangedSupportedPixelFormat, "IWICBitmapFrameEncode::SetPixelFormat(...)"), new DataEntry(Resources.Expected, g), new DataEntry(Resources.Actual, pixelFormat));
}
}
}
pixelFormat = Consts.GUID_WICPixelFormat32bppBGRA;
frame.SetPixelFormat(ref pixelFormat);
byte[] buffer = new byte[(PixelFormatInfoRule.GetBitPerPixel(pixelFormat) + 7) / 8];
frame.WritePixels(1, (uint)buffer.Length, (uint)buffer.Length, buffer);
frame.Commit();
try
{
encoder.CreateNewFrame(out frame2, null);
if (!t.SupportsMultiframe)
{
form.Add(this, mi.ToString(Resources._0_ShouldFail), new DataEntry(WinCodecError.WINCODEC_ERR_UNSUPPORTEDOPERATION));
}
}
catch (Exception e)
{
if (t.SupportsMultiframe)
{
form.Add(this, e.TargetSite.ToString(Resources._0_Failed), new DataEntry(Resources.FrameIndex, 1), new DataEntry(e));
}
else
{
form.CheckHRESULT(this, WinCodecError.WINCODEC_ERR_UNSUPPORTEDOPERATION, e, new DataEntry(Resources.FrameIndex, 1));
}
}
}
catch (Exception e)
{
form.Add(this, e.TargetSite.ToString(Resources._0_Failed), new DataEntry(e));
}
}
}
finally
{
frame2.ReleaseComObject();
encoder.ReleaseComObject();
bag.ReleaseComObject();
factory.ReleaseComObject();
palette.ReleaseComObject();
}
return(base.ProcessEncoder(form, encoder, tag));
}