PARA_ERROR(UNSUPPORTED_FILTER, "given filter not supported"), \
PARA_ERROR(BAD_FILTER_OPTIONS, "invalid filter option given"), \
PARA_ERROR(FC_EOF, "filter chain: eof"), \
PARA_ERROR(UNSUPPORTED_FILTER, "given filter not supported"), \
PARA_ERROR(BAD_FILTER_OPTIONS, "invalid filter option given"), \
PARA_ERROR(FC_EOF, "filter chain: eof"), \