add constraint for scanside

diff --git a/src/kds_s2000w_net.c b/src/kds_s2000w_net.c
index a0916d688ff109337bc465beb3f52526204701b6..74ad459e58d41deece413910b11293d96315fcbb 100644 (file)
--- a/src/kds_s2000w_net.c
+++ b/src/kds_s2000w_net.c
@@ -111,9 +111,13 @@ const SANE_Option_Descriptor* _sane_kds_s2000w_net_get_option_descriptor(
                        option_descriptors[option].name = "scanside";
                        option_descriptors[option].title = "scanside";
                        option_descriptors[option].desc = "scanside";
-                       option_descriptors[option].cap = SANE_CAP_SOFT_DETECT;
-                       option_descriptors[option].constraint_type = SANE_CONSTRAINT_NONE;
-                       option_descriptors[option].constraint.string_list = NULL;
+                       option_descriptors[option].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+                       option_descriptors[option].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+                       SANE_String_Const* constraint_strings = malloc(sizeof(char*) * 3);
+                       constraint_strings[0] = "Simplex";
+                       constraint_strings[1] = "Duplex";
+                       constraint_strings[2] = NULL;
+                       option_descriptors[option].constraint.string_list = constraint_strings;
                        break;
                case 3:
                        option_descriptors[option].name = "colormode";