[sane-devel] CCT Type on Epson 2 driver

[Ralph Little]

Hi

On 2022-07-10 12:26, Nicholas Andre wrote:
> Hey all,
>
> I'm having trouble enabling the CCT Type option in sane (says inactive).
>
> In the code I see:
> /* XXX disabled for now */
> s->opt[OPT_CCT_MODE].name = "cct-type";
> s->opt[OPT_CCT_MODE].title = "CCT Profile Type";
> s->opt[OPT_CCT_MODE].desc = "Color correction profile type";
> s->opt[OPT_CCT_MODE].type = SANE_TYPE_STRING;
> s->opt[OPT_CCT_MODE].cap |= SANE_CAP_ADVANCED | SANE_CAP_INACTIVE;
> s->opt[OPT_CCT_MODE].size = max_string_size(cct_mode_list);
> s->opt[OPT_CCT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
> s->opt[OPT_CCT_MODE].constraint.string_list = cct_mode_list;
> s->val[OPT_CCT_MODE].w = CCT_AUTO;
>
>
> Does this mean this feature isn't enabled? or am I missing something.
>
> $ scanimage -d 'epson2:libusb:006:009' --mode=Color --depth=16 --source="TPU8x10" --preview=yes --format=tiff --color-correction="None" --cct-type="Colour negatives" --cct-profile=0  -o ~/preview.tif
> scanimage: attempted to set inactive option cct-type
>

It appears from looking at the code that this option is disabled for the 
moment:

     /* XXX disabled for now */
     s->opt[OPT_CCT_MODE].name = "cct-type";
     s->opt[OPT_CCT_MODE].title = "CCT Profile Type";
...

I don't see the value being used elsewhere in the backend for this 
option either so I guess it doesn't do anything at the moment.

Perhaps the current maintainer has some ideas?

Cheers,
Ralph
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