// Allow the application to select one or more row filters to use.
public void png_set_filter(PNG_FILTER_TYPE method, PNG_FILTER filters)
{
if ((mng_features_permitted & PNG_FLAG_MNG.FILTER_64) == PNG_FLAG_MNG.FILTER_64 &&
method == PNG_FILTER_TYPE.INTRAPIXEL_DIFFERENCING)
{
method = PNG_FILTER_TYPE.BASE;
}
if (method != PNG_FILTER_TYPE.BASE)
{
throw new PNG_Exception("Unknown custom filter method");
}
if ((filters & PNG_FILTER.ALL) == PNG_FILTER.None)
{
Debug.WriteLine("Unknown row filter for method 0");
do_filter = PNG_FILTER.NONE;
}
else
{
do_filter = filters;
}
png_set_filter2();
}
// Allow the application to select one or more row filters to use.
public void png_set_filter(PNG_FILTER_TYPE method, PNG_FILTER filters)
{
if((mng_features_permitted&PNG_FLAG_MNG.FILTER_64)==PNG_FLAG_MNG.FILTER_64&&
method==PNG_FILTER_TYPE.INTRAPIXEL_DIFFERENCING) method=PNG_FILTER_TYPE.BASE;
if(method!=PNG_FILTER_TYPE.BASE) throw new PNG_Exception("Unknown custom filter method");
if((filters&PNG_FILTER.ALL)==PNG_FILTER.None)
{
Debug.WriteLine("Unknown row filter for method 0");
do_filter=PNG_FILTER.NONE;
}
else do_filter=filters;
png_set_filter2();
}
