openslide_read_region filling buffer with 0's for Mirax

[Terry Wilson]

Thanks for the zip file ... even using these lib's and dll's, the buffer is
still being written with all 0's.  If I could ask you one last favor and
try this very simple program on your windows system and let me know what
you see.

#include "d:\openslide-win64-20171122\include\openslide\openslide.h"

int main()
{
    const char* fn = "C:\\Data\\CMU-3.mrxs";
    openslide_t* openslide = openslide_open(fn);

    uint32_t *data = new uint32_t[512 * 512];
    openslide_read_region(openslide, data, 0, 0, 0, 512, 512);
    for (int j = 0; j < 10; ++j)
    {
        printf("%x,", data[j]);
    }

    return 0;
}


Regards,

Terry

On Sun, Apr 12, 2020 at 6:14 PM <jcupitt at gmail.com> wrote:

> The libvips dev zip has the openslide DLLs and LIBs:
>
>
> https://github.com/libvips/libvips/releases/download/v8.9.1/vips-dev-w64-all-8.9.1.zip
>
> On Sun, 12 Apr 2020 at 19:26, Terry Wilson <twilson7755 at gmail.com> wrote:
> >
> > Yes I am able to successfully use your application to open various .mrxs
> files.  Could you send me your libopenslide.lib file to see if I can build
> against your openslide libraries and run successfully?
> >
> > Thanks,
> >
> > Terry
> >
> > On Sun, Apr 12, 2020 at 1:31 PM <jcupitt at gmail.com> wrote:
> >>
> >> I help maintain an image processing package which includes openslide
> >> support. I just tried CMU-3.mrxs in the windows binary and it works
> >> for me.
> >>
> >> Try this:
> >>
> >>
> https://github.com/libvips/nip2/releases/download/v8.7.0/nip2-8.7.0-setup.zip
> >>
> >> Unzip and run the .exe to install. To load an MRXS file, click File /
> >> Open, navigate to the right directory, select "all files", and
> >> double-click on CMU-3.mrxs. It should load as a thumbnail in the
> >> workspace. Double-click the thumbnail to open an image view window.
> >> You should be able to scroll about and view the file.
> >>
> >> That's using the standard openslide sources, though I built them myself.
> >>
> >> You can sometimes get problems with special characters or spaces in
> >> the folder names, could that be it?
> >>
> >> John
> >> _______________________________________________
> >> openslide-users mailing list
> >> openslide-users at lists.andrew.cmu.edu
> >> https://lists.andrew.cmu.edu/mailman/listinfo/openslide-users
> _______________________________________________
> openslide-users mailing list
> openslide-users at lists.andrew.cmu.edu
> https://lists.andrew.cmu.edu/mailman/listinfo/openslide-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.andrew.cmu.edu/pipermail/openslide-users/attachments/20200412/71c4d325/attachment.html>