private static void ConvertColor(IInputArray src, IOutputArray dest, Type srcColor, Type destColor, int dcn, Size size, Stream stream)
{
try
{
// if the direct conversion exist, apply the conversion
CudaInvoke.CvtColor(src, dest, CvToolbox.GetColorCvtCode(srcColor, destColor), dcn, stream);
} catch
{
try
{
//if a direct conversion doesn't exist, apply a two step conversion
//in this case, needs to wait for the completion of the stream because a temporary local image buffer is used
//we don't want the tmp image to be released before the operation is completed.
using (CudaImage <Bgr, TDepth> tmp = new CudaImage <Bgr, TDepth>(size))
{
CudaInvoke.CvtColor(src, tmp, CvToolbox.GetColorCvtCode(srcColor, typeof(Bgr)), 3, stream);
CudaInvoke.CvtColor(tmp, dest, CvToolbox.GetColorCvtCode(typeof(Bgr), destColor), dcn, stream);
stream.WaitForCompletion();
}
} catch (Exception excpt)
{
throw new NotSupportedException(String.Format(
"Conversion from CudaImage<{0}, {1}> to CudaImage<{2}, {3}> is not supported by OpenCV: {4}",
srcColor.ToString(),
typeof(TDepth).ToString(),
destColor.ToString(),
typeof(TDepth).ToString(),
excpt.Message));
}
}
}