public void TestCreateDecoderMultithread()
{
var factory = GetImagingFactory();
using (Stream sourceStream = File.Open(@"..\..\..\PanasonicRW2.Tests\P1350577.RW2", FileMode.Open, FileAccess.Read, FileShare.Read))
{
Guid nul = Guid.Empty;
var stream = new StreamComWrapper(sourceStream);
IWICBitmapDecoder decoder = factory.CreateDecoderFromStream(stream, nul, WICDecodeOptions.WICDecodeMetadataCacheOnDemand);
decoder.Initialize(stream, WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
Parallel.For(0, 8, new ParallelOptions {
MaxDegreeOfParallelism = 8
}, (i) =>
{
IWICBitmapFrameDecode frame;
decoder.GetFrame(0, out frame);
uint w, h;
frame.GetSize(out w, out h);
var buf = new byte[w * h * 3];
frame.CopyPixels(new WICRect {
Height = (int)h, Width = (int)w
}, w * 3, (uint)buf.Length, buf);
});
}
Marshal.ReleaseComObject(factory);
}
public static IWICFormatConverter CreateWicImage(IWICImagingFactory wic, string fileName)
{
using (IWICBitmapDecoder decoder = wic.CreateDecoderFromFileName(fileName))
using (IWICStream decodeStream = wic.CreateStream(fileName, FileAccess.Read))
{
decoder.Initialize(decodeStream, DecodeOptions.CacheOnDemand);
using (IWICBitmapFrameDecode decodeFrame = decoder.GetFrame(0))
{
var converter = wic.CreateFormatConverter();
converter.Initialize(decodeFrame, PixelFormat.Format32bppPBGRA, BitmapDitherType.None, null, 0, BitmapPaletteType.Custom);
return(converter);
}
}
}
public static void Initialize(this IWICBitmapDecoder bitmapDecoder, Stream stream, WICDecodeOptions cacheOption)
{
bitmapDecoder.Initialize(stream.AsCOMStream(), cacheOption);
}
protected override void RunOverride(MainForm form, object tag)
{
bool hasFile = false;
bool processed = false;
IWICImagingFactory factory = (IWICImagingFactory) new WICImagingFactory();
IWICBitmapDecoderInfo info = null;
IWICBitmapDecoder decoder = null;
try
{
info = (IWICBitmapDecoderInfo)factory.CreateComponentInfo(Parent.Clsid);
foreach (string file in GetDecodableFiles(form, Parent.Clsid))
{
decoder.ReleaseComObject();
decoder = info.CreateInstance();
hasFile = true;
IWICStream stream = factory.CreateStream();
stream.InitializeFromFilename(file, NativeMethods.GenericAccessRights.GENERIC_READ);
try
{
decoder.Initialize(stream, WICDecodeOptions.WICDecodeMetadataCacheOnDemand);
if (ProcessDecoder(form, decoder, new DataEntry[] { new DataEntry(file) }, tag))
{
for (uint index = 0; index < decoder.GetFrameCount(); index++)
{
IWICBitmapFrameDecode frame = decoder.GetFrame(index);
try
{
if (ProcessFrameDecode(form, frame, new DataEntry[] { new DataEntry(file), new DataEntry(index) }, tag))
{
processed = true;
}
}
finally
{
frame.ReleaseComObject();
}
}
}
else
{
processed = true;
}
}
catch (Exception e)
{
form.Add(this, e.TargetSite.ToString(Resources._0_Failed), new DataEntry(file), new DataEntry(e));
}
finally
{
stream.ReleaseComObject();
}
}
}
finally
{
factory.ReleaseComObject();
info.ReleaseComObject();
decoder.ReleaseComObject();
}
if (!hasFile)
{
form.Add(Parent, string.Format(CultureInfo.CurrentUICulture, Resources.NoFilesFor_0, Parent.Text));
}
else if (!processed)
{
form.Add(this, string.Format(CultureInfo.CurrentUICulture, Resources.NoFilesFor_0, Text));
}
}
