I just made up a quick test to see if I understand how it works (where
p1 and p2 are two different cmyk profiles). Compiled and ran fine.
How is this different than what you're doing?
#include "lcms.h"
#include <stdio.h>
typedef struct _RGB_ {
BYTE r,g,b;
} RGB;
int main()
{
cmsHPROFILE srgb;
cmsHPROFILE p1,p2;
srgb = cmsCreate_sRGBProfile();
p1 = cmsOpenProfileFromFile("p1.icc","r");
p2 = cmsOpenProfileFromFile("p2.icc","r");
cmsHPROFILE proof[4];
proof[0] = srgb;
proof[1] = p1;
proof[2] = p2;
proof[3] = srgb;
cmsHTRANSFORM multi = cmsCreateMultiprofileTransform(proof,4,
TYPE_RGB_8,TYPE_RGB_8,
INTENT_RELATIVE_COLORIMETRIC,0);
RGB pix;
RGB outPix;
for( int i = 0; i < 256; i++ )
{
pix.r = pix.g = pix.b = i;
cmsDoTransform(multi,&pix, &outPix,1);
printf("%d %d %d -> %d %d %d\n",
pix.r,pix.g,pix.b,
outPix.r,outPix.g,outPix.b);
}
return 0;
}
Isaac Case
Software Engineer
PCDT Color Workflow Team
Xerox Corporation
p 585.265.5472
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:lcms-user-
> [EMAIL PROTECTED] On Behalf Of Steve Mills
> Sent: Wednesday, May 21, 2008 12:17 PM
> To: lcms-user lcms-user
> Subject: Re: [Lcms-user] Confused about cmsCreateMultiprofileTransform
> error
>
> On May 21, 2008, at 11:10:15, Case, Isaac wrote:
>
> > Sorry for coming in on this much later, but what exactly are you
> > trying
> > to do?
> >
> > It looks like you're trying to softproof what rgb prints from the
> > proofer would look like, if the proofer was emulating the printer.
> >
> > Is that correct?
>
>
> That sounds correct. We soft proof to the screen what the resulting
> document would look like when printed to a proofer, taking the printer
> into account. The input space can be rgb, cmyk, grey, xyz, or Lab.
>
> _________________________________________________________
> Steve Mills Me: 952-401-6255
> Senior Software Architect MultiAd
> [EMAIL PROTECTED] www.multi-ad.com
>
>
>
>
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