protected override bool ProcessDecoder(MainForm form, IWICBitmapDecoder decoder, DataEntry[] de, object tag)
{
IWICBitmapDecoderInfo info = decoder.GetDecoderInfo();
try
{
Guid clsid;
info.GetCLSID(out clsid);
if (clsid != Parent.Clsid)
{
form.Add(this, Resources.IncorrectDecoderPickedUp, de, new DataEntry(Resources.Expected, Parent.Clsid), new DataEntry(Resources.Actual, clsid));
}
else
{
Tag t = (Tag)tag;
if (!t.SupportsMultiframe && decoder.GetFrameCount() > 1)
{
form.Add(this, Resources.DecoderDoesNotMultiframe, de, new DataEntry(Resources.FrameCount, decoder.GetFrameCount()));
}
}
}
finally
{
info.ReleaseComObject();
}
return true;
}
protected override bool ProcessDecoder(MainForm form, IWICBitmapDecoder decoder, DataEntry[] de, object tag)
{
CheckCopyPalette(form, de, decoder.CopyPalette);
CheckGetColorContexts(form, de, decoder.GetColorContexts);
if (decoder.GetFrameCount() == 0)
{
form.Add(this, Resources.FileNoFrames, de);
}
CheckGetBitmapSource(form, de, decoder.GetPreview, WinCodecError.WINCODEC_ERR_UNSUPPORTEDOPERATION);
CheckGetBitmapSource(form, de, decoder.GetThumbnail, WinCodecError.WINCODEC_ERR_CODECNOTHUMBNAIL);
return true;
}
private void Initialize(IWICBitmapDecoder decoder)
{
Exception exception = null;
IWICBitmapFrameDecode source = null;
IWICFormatConverter converter = null;
var factory = m_directCanvasFactory.WicImagingFactory;
int hr = 0;
hr = decoder.GetFrame(0, out source);
if (hr != 0)
{
exception = new Exception(string.Format("Could not get the frame from the decoder."));
goto cleanup;
}
hr = factory.CreateFormatConverter(out converter);
if (hr != 0)
{
exception = new Exception(string.Format("Could not create the format converter"));
goto cleanup;
}
hr = converter.Initialize(source,
ref WICFormats.WICPixelFormat32bppPBGRA,
WICBitmapDitherType.WICBitmapDitherTypeNone,
null,
0,
WICBitmapPaletteType.WICBitmapPaletteTypeMedianCut);
if (hr != 0)
{
exception = new Exception(string.Format("Could not initialize the converter"));
goto cleanup;
}
bool canConvert;
hr = converter.CanConvert(ref WICFormats.WICPixelFormat32bppPBGRA,
ref WICFormats.WICPixelFormat32bppBGRA,
out canConvert);
if (hr != 0)
{
exception = new Exception(string.Format("Could not convert color formats"));
goto cleanup;
}
hr = factory.CreateBitmapFromSource(converter,
WICBitmapCreateCacheOption.WICBitmapCacheOnLoad,
out m_internalBitmap);
if (hr != 0)
{
exception = new Exception(string.Format("Could not create bitmap"));
goto cleanup;
}
cleanup:
if (converter != null)
Marshal.ReleaseComObject(converter);
if (source != null)
Marshal.ReleaseComObject(source);
if (decoder != null)
Marshal.ReleaseComObject(decoder);
if (exception != null)
throw exception;
else
Initialize();
}
