static Guid[] GetAllPixelFormats()
{
List <Guid> res = new List <Guid>();
IWICImagingFactory factory = (IWICImagingFactory) new WICImagingFactory();
IEnumUnknown eu = factory.CreateComponentEnumerator(WICComponentType.WICPixelFormat, WICComponentEnumerateOptions.WICComponentEnumerateRefresh);
int hr = 0;
object[] o = new object[1];
while (hr == 0)
{
uint fetched = 0;
hr = eu.Next(1, o, ref fetched);
if (fetched == 1)
{
IWICPixelFormatInfo info = (IWICPixelFormatInfo)o[0];
Guid guid;
info.GetFormatGUID(out guid);
res.Add(guid);
info.ReleaseComObject();
}
o.ReleaseComObject();
}
return(res.ToArray());
}
public static IComObject <IEnumUnknown> CreateComponentEnumerator(this IWICImagingFactory factory, WICComponentType type = WICComponentType.WICAllComponents, WICComponentEnumerateOptions options = WICComponentEnumerateOptions.WICComponentEnumerateDefault)
{
if (factory == null)
{
throw new ArgumentNullException(nameof(factory));
}
factory.CreateComponentEnumerator(type, options, out var value).ThrowOnError();
return(new ComObject <IEnumUnknown>(value));
}
public static IEnumerable <IComObject <IWICComponentInfo> > EnumerateComponents(this IWICImagingFactory factory, WICComponentType type, WICComponentEnumerateOptions options)
{
using (var enumerator = factory.CreateComponentEnumerator(type, options))
{
do
{
var o = new object[1];
var fetched = 0;
enumerator.Object.Next(1, o, ref fetched);
if (fetched != 1)
{
break;
}
if (o[0] is IWICComponentInfo info)
{
yield return(new ComObject <IWICComponentInfo>(info));
}
}while (true);
}
}
private static IEnumerable <IWICComponentInfo> GetComponentInfos(WICComponentType type)
{
IWICImagingFactory factory = (IWICImagingFactory) new WICImagingFactoryCoClass();
IEnumUnknown eu = null;
object[] o = new object[1];
try
{
eu = factory.CreateComponentEnumerator(type, WICComponentEnumerateOptions.WICComponentEnumerateDefault);
int hr = 0;
while (hr == 0)
{
uint fetched = 0;
hr = eu.Next(1, o, ref fetched);
Marshal.ThrowExceptionForHR(hr);
if (fetched == 1)
{
IWICComponentInfo ci = (IWICComponentInfo)o[0];
try
{
yield return(ci);
}
finally
{
Marshal.ReleaseComObject(ci);
}
}
}
}
finally
{
if (eu != null)
{
Marshal.ReleaseComObject(eu);
}
Marshal.ReleaseComObject(factory);
}
}
public static IEnumerable <IWICComponentInfo> GetComponentInfos(WICComponentType type)
{
IWICImagingFactory factory = (IWICImagingFactory) new WICImagingFactory();
IEnumUnknown eu = null;
object[] o = new object[1];
try
{
eu = factory.CreateComponentEnumerator(type, WICComponentEnumerateOptions.WICComponentEnumerateRefresh | WICComponentEnumerateOptions.WICComponentEnumerateDisabled);
int hr = 0;
while (hr == 0)
{
uint fetched = 0;
hr = eu.Next(1, o, ref fetched);
Marshal.ThrowExceptionForHR(hr);
if (fetched == 1)
{
IWICComponentInfo ci = (IWICComponentInfo)o[0];
try
{
yield return(ci);
}
finally
{
ci.ReleaseComObject();
}
}
}
}
finally
{
factory.ReleaseComObject();
eu.ReleaseComObject();
}
}
static IEnumerable <IWICBitmapEncoderInfo> EnumEncoders(IWICImagingFactory wic)
{
return(wic.CreateComponentEnumerator(WICComponentType.WICEncoder, WICComponentEnumerateOptions.WICComponentEnumerateDefault)
.AsEnumerable()
.OfType <IWICBitmapEncoderInfo>());
}