[cups-devel] how to get supported media information for a particular printer
My Sadhukhan
psadhukhan at gmail.com
Wed Aug 2 23:18:50 PDT 2017
I also tried with cups 2.2.0 with ubuntu16.10 and there also the
cupsCheckDestSupported returns false for all options.
On Thu, Aug 3, 2017 at 11:41 AM, My Sadhukhan <psadhukhan at gmail.com> wrote:
> 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 <msweet at apple.com> 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 <psadhukhan at gmail.com> wrote:
>> >
>> > I checked cupsCheckDestSupported() before calling
>> cupsFIndDestSupported()
>> > for options like CUPS_COPIES,CUPS_FINISHINGS,CU
>> PS_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 <psadhukhan at gmail.com>
>> 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 <msweet at apple.com>
>> 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 <psadhukhan at gmail.com>
>> 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
>> >>>> cups-devel at cups.org
>> >>>> https://lists.cups.org/mailman/listinfo/cups-devel
>> >>>
>> >>> _________________________________________________________
>> >>> Michael Sweet, Senior Printing System Engineer
>> >>>
>> >>> _______________________________________________
>> >>> cups-devel mailing list
>> >>> cups-devel at cups.org
>> >>> https://lists.cups.org/mailman/listinfo/cups-devel
>> >>>
>> >>
>> >>
>> > _______________________________________________
>> > cups-devel mailing list
>> > cups-devel at cups.org
>> > https://lists.cups.org/mailman/listinfo/cups-devel
>>
>> _________________________________________________________
>> Michael Sweet, Senior Printing System Engineer
>>
>> _______________________________________________
>> cups-devel mailing list
>> cups-devel at cups.org
>> https://lists.cups.org/mailman/listinfo/cups-devel
>>
>
>
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