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

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.
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> *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
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer