IsSupportedMimeType(
BitmapSource bitmapSource
)
{
BitmapCodecInfo codecInfo = null;
string imageMimeType = "";
if (bitmapSource is BitmapFrame)
{
//
// This code gets the encoder based on the decoder that was
// used for this specific BitmapSource.
//
BitmapFrame bitmapFrame = bitmapSource as BitmapFrame;
if (bitmapFrame != null && bitmapFrame.Decoder != null)
{
codecInfo = bitmapFrame.Decoder.CodecInfo;
}
}
if (codecInfo != null)
{
(new RegistryPermission(PermissionState.Unrestricted)).Assert();
try
{
imageMimeType = codecInfo.MimeTypes;
}
finally
{
RegistryPermission.RevertAssert();
}
}
int start = 0;
int comma = imageMimeType.IndexOf(',', start);
bool foundType = false;
//
// Test all strings before commas
//
if (comma != -1)
{
while (comma != -1 && !foundType)
{
string subString = imageMimeType.Substring(start, comma);
foundType = XpsManager.SupportedImageType(new ContentType(subString));
start = comma + 1;
comma = imageMimeType.IndexOf(',', start);
}
}
//
// If we still have not found a supported type
// Test the remainder of the string
//
if (!foundType)
{
foundType = XpsManager.SupportedImageType(new ContentType(imageMimeType.Substring(start)));
}
return(foundType);
}