Re: [cups-devel] how to get supported media information for a particular printer

I am using cups 2.1.3 that comes with ubuntu16.04. It should support the
non-ppd APIs, I guess, as that was deprecated from 1.6 onwards.
Please let me know if this version has any problem regarding the APIs I am
using.

Regards
Prasanta

On Wed, Aug 2, 2017 at 6:45 PM, Michael Sweet <[email protected]> wrote:

> What version of CUPS are you using?
>
> (there have been a number of bug fixes over the years...)
>
> > On Aug 2, 2017, at 1:17 AM, My Sadhukhan <[email protected]> wrote:
> >
> > I checked cupsCheckDestSupported() before calling cupsFIndDestSupported()
> > for options like CUPS_COPIES,CUPS_FINISHINGS,
> CUPS_MEDIA,CUPS_ORIENTATION,
> > CUPS_SIDES etc and all of them return false,
> > although the printer being queried is a MFP and supports duplex,
> > orientation etc and I can print a test-page out of it.
> > Is it a bug in cups or am I missing calling/initialising something?
> >
> > Regards
> > Prasanta
> >
> > On Tue, Aug 1, 2017 at 10:56 AM, My Sadhukhan <[email protected]>
> wrote:
> >
> >> Thanks Michael.
> >> I used cupsGetNamedDest to initialise cups_dest_t but it still fails in
> >> cupsFindDestSupported().
> >> ----------
> >> void getMedia(char *name)
> >> {
> >>    cups_dest_t *dest = cupsGetNamedDest(CUPS_HTTP_DEFAULT, name, NULL);
> >>    if (dest == NULL) {
> >>        printf("cupsGetNamedDest failed %s\n", cupsLastErrorString());
> >>        return;
> >>    } else {
> >>        printf("dest name %s\n", dest->name);
> >>    }
> >>    cups_dinfo_t *info = cupsCopyDestInfo(CUPS_HTTP_DEFAULT, dest);
> >>    if (info == NULL) {
> >>        printf("CopyDestInfo Request failed %s\n",
> cupsLastErrorString());
> >>    }
> >>    ipp_attribute_t *media = cupsFindDestSupported(CUPS_HTTP_DEFAULT,
> >>                              dest, info, CUPS_MEDIA);
> >>    if (media != NULL) {
> >>        int i, count = ippGetCount(media);
> >>        printf("count %d\n", count);
> >>        for (i = 0; i < count; i++)
> >>            printf(" %s\n", ippGetString(media, i, NULL));
> >>    } else {
> >>        printf("FindDestSupported Request failed %s\n",
> >> cupsLastErrorString());
> >>    }
> >> }
> >>
> >> ----------------------------citing----------
> >> dest name Ricoh-Aficio-MP-5002
> >> CopyDestInfo Request failed successful-ok
> >> FindDestSupported Request failed Invalid argument
> >> ----------------
> >> I am not sure if cupsCopyDestInfo() failed or not . The manual does not
> >> say the return value if there is error. cupsGetLastErrorString() conveys
> >> there is no error yet "info" is NULL.
> >>
> >> Could you please suggest as to what else is going wrong?
> >> I could not find "_cups_dinfo_s" structure definition in
> >> https://www.cups.org/doc/cupspm.html#cups_dinfo_t.
> >> Also, cupsFindDestSupported() manual shows "Find the default value(s)
> for
> >> the given option." which is same as cupsFindDestDefault(). I think the
> >> former should be texted as "Find supported value(s) for the given
> option".
> >>
> >> Regards
> >> Prasanta
> >>
> >> On Mon, Jul 31, 2017 at 7:11 PM, Michael Sweet <[email protected]>
> wrote:
> >>
> >>> You can't initialize a cups_dest_t structure directly like that and
> have
> >>> it work.
> >>>
> >>> Use:
> >>>
> >>>    cups_dest_t *dest = cupsGetNamedDest(CUPS_HTTP_DEFAULT, name,
> NULL);
> >>>
> >>> Then cupsCopyDestInfo will have the information it needs to get the
> >>> supported media for you...
> >>>
> >>>
> >>>> On Jul 31, 2017, at 6:01 AM, My Sadhukhan <[email protected]>
> wrote:
> >>>>
> >>>> Hi All,
> >>>>
> >>>> I was trying to find the supported media for a particular printer
> using
> >>>> non-ppd based API but am encountering a problem.
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> *void getMedia(char *name){    cups_dest_t dest;    dest.name
> >>>> <http://dest.name> = name;    dest.instance = name;
> dest.is_default
> >>> =
> >>>> 0;    cups_dinfo_t *info = cupsCopyDestInfo(CUPS_HTTP_DEFAULT,
> &dest);;
> >>>> if (info == NULL) {        printf("CopyDestInfo Request failed %s\n",
> >>>> cupsLastErrorString());    }    ipp_attribute_t *media =
> >>>> cupsFindDestSupported(CUPS_HTTP_DEFAULT,
> >>>> &dest, info, CUPS_MEDIA);    if (media != NULL) {        int i, count
> =
> >>>> ippGetCount(media);        printf("count %d\n", count);        for (i
> =
> >>> 0;
> >>>> i < count; i++)            printf(" %s\n", ippGetString(media, i,
> >>>> NULL));    } else {        printf("FindDestSupported Request failed
> >>> %s\n",
> >>>> cupsLastErrorString());    }}int main(void){
> >>>> getMedia("Ricoh-Aficio-MP-5002");*
> >>>> *}*
> >>>>
> >>>> I am getting
> >>>> -----------
> >>>> CopyDestInfo Request failed (null)
> >>>> FindDestSupported Request failed Invalid argument
> >>>> -----------
> >>>>
> >>>> Earlier, I was using
> >>>> char filename = cupsGetPPD("Ricoh-Aficio-MP-5002");
> >>>> ppd_file_t *ppd = ppdOpenFile(filename);
> >>>> ppd_option_t *optionPage = ppdFindOption(ppd, "PageSize") and get
> >>>> optionPage->choices->text
> >>>> to get the below supported media size information obtained from that
> >>>> printer ppd.
> >>>> That is, in* /etc/cups/ppd/Ricoh-Aficio-MP-5002.ppd*,
> >>>> I have this and I am interested in getting "A3", "A4", "A5", "A6",
> "B4",
> >>>> "B5"..."EngQuatro.FullBleed" etc.
> >>>>
> >>>> but now, since ppd API is deprecated, I want to use the new IPP-based
> >>> api.
> >>>>
> >>>> Could anyone suggest what I need to use in above code?
> >>>>
> >>>> *%========== Information About Media Sizes ==========
> >>>>
> >>>> *DefaultImageableArea: A4
> >>>> *ImageableArea A3/A3: "12 12 830 1179"
> >>>> *ImageableArea A4/A4: "12 12 583 830"
> >>>> *ImageableArea A5/A5: "12 12 408 583"
> >>>> *ImageableArea A6/A6: "12 12 285 408"
> >>>> *ImageableArea B4/B4 (JIS): "12 12 717 1020"
> >>>> *ImageableArea B5/B5 (JIS): "12 12 504 717"
> >>>> *ImageableArea B6/B6 (JIS): "12 12 351 504"
> >>>> *ImageableArea Legal/Legal: "12 12 600 996"
> >>>> *ImageableArea GovernmentLG/8.25x14: "12 12 582 996"
> >>>> *ImageableArea EngQuatro/8x10: "12 12 564 708"
> >>>> *ImageableArea GLT/8x10.5: "12 12 564 744"
> >>>> *ImageableArea Letter/Letter: "12 12 600 780"
> >>>> *ImageableArea Statement/5.5x8.5: "12 12 384 600"
> >>>> *ImageableArea F/8x13: "12 12 564 924"
> >>>> *ImageableArea Folio/8.25x13: "12 12 583 923"
> >>>> *ImageableArea FanFoldGermanLegal/8.5x13: "12 12 600 924"
> >>>> *ImageableArea Tabloid/11x17: "12 12 780 1212"
> >>>> *ImageableArea 12x18/12x18: "12 12 852 1284"
> >>>> *ImageableArea 11x15/11x15: "12 12 780 1068"
> >>>> *ImageableArea 10x14/10x14: "12 12 708 996"
> >>>> *ImageableArea 10x15/10x15: "12 12 708 1068"
> >>>> *ImageableArea 11x14/11x14: "12 12 780 996"
> >>>> *ImageableArea Executive/Executive: "12 12 510 744"
> >>>> *ImageableArea Env10/Com10 Env.: "12 12 285 672"
> >>>> *ImageableArea EnvMonarch/Monarch Env.: "12 12 267 528"
> >>>> *ImageableArea EnvC5/C5 Env.: "12 12 447 637"
> >>>> *ImageableArea EnvC6/C6 Env.: "12 12 311 447"
> >>>> *ImageableArea DLEnv/DL Env.: "12 12 299 611"
> >>>> *ImageableArea 8Kai/8K: "12 12 745 1094"
> >>>> *ImageableArea 16Kai/16K: "12 12 541 745"
> >>>> *ImageableArea A3.FullBleed/A3 (Full Bleed): "0 0 842 1190"
> >>>> *ImageableArea A4.FullBleed/A4 (Full Bleed): "0 0 595 841"
> >>>> *ImageableArea A5.FullBleed/A5 (Full Bleed): "0 0 420 594"
> >>>> *ImageableArea A6.FullBleed/A6 (Full Bleed): "0 0 297 419"
> >>>> *ImageableArea B4.FullBleed/B4 (JIS) (Full Bleed): "0 0 729 1031"
> >>>> *ImageableArea B5.FullBleed/B5 (JIS) (Full Bleed): "0 0 516 728"
> >>>> *ImageableArea B6.FullBleed/B6 (JIS) (Full Bleed): "0 0 363 515"
> >>>> *ImageableArea Legal.FullBleed/Legal (Full Bleed): "0 0 612 1007"
> >>>> *ImageableArea GovernmentLG.FullBleed/8.25x14 (Full Bleed): "0 0 594
> >>> 1007"
> >>>> *ImageableArea EngQuatro.FullBleed/8x10 (Full Bleed): "0 0 576 719"
> >>>> ...
> >>>> ..
> >>>>
> >>>> Thanks & Regards
> >>>> Prasanta
> >>>> _______________________________________________
> >>>> cups-devel mailing list
> >>>> [email protected]
> >>>> https://lists.cups.org/mailman/listinfo/cups-devel
> >>>
> >>> _________________________________________________________
> >>> Michael Sweet, Senior Printing System Engineer
> >>>
> >>> _______________________________________________
> >>> cups-devel mailing list
> >>> [email protected]
> >>> https://lists.cups.org/mailman/listinfo/cups-devel
> >>>
> >>
> >>
> > _______________________________________________
> > cups-devel mailing list
> > [email protected]
> > https://lists.cups.org/mailman/listinfo/cups-devel
>
> _________________________________________________________
> Michael Sweet, Senior Printing System Engineer
>
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> cups-devel mailing list
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>