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/* ************************************************************************** */
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/* * For conditions of distribution and use, * */
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/* * see copyright notice in libmng.h * */
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/* ************************************************************************** */
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/* * * */
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/* * project : libmng * */
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/* * file : libmng_cms.c copyright (c) 2000-2004 G.Juyn * */
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/* * version : 1.0.9 * */
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/* * * */
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/* * purpose : color management routines (implementation) * */
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/* * * */
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/* * author : G.Juyn * */
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/* * * */
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/* * comment : implementation of the color management routines * */
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/* * * */
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/* * changes : 0.5.1 - 05/01/2000 - G.Juyn * */
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/* * - B001(105795) - fixed a typo and misconception about * */
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/* * freeing allocated gamma-table. (reported by Marti Maria) * */
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/* * 0.5.1 - 05/08/2000 - G.Juyn * */
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/* * - changed strict-ANSI stuff * */
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/* * 0.5.1 - 05/09/2000 - G.Juyn * */
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/* * - filled application-based color-management routines * */
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/* * 0.5.1 - 05/11/2000 - G.Juyn * */
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/* * - added creatememprofile * */
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/* * - added callback error-reporting support * */
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/* * 0.5.1 - 05/12/2000 - G.Juyn * */
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/* * - changed trace to macro for callback error-reporting * */
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/* * * */
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/* * 0.5.2 - 06/10/2000 - G.Juyn * */
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/* * - fixed some compilation-warnings (contrib Jason Morris) * */
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/* * * */
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/* * 0.5.3 - 06/21/2000 - G.Juyn * */
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/* * - fixed problem with color-correction for stored images * */
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/* * 0.5.3 - 06/23/2000 - G.Juyn * */
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/* * - fixed problem with incorrect gamma-correction * */
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/* * * */
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/* * 0.9.2 - 08/05/2000 - G.Juyn * */
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/* * - changed file-prefixes * */
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/* * * */
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/* * 0.9.3 - 08/31/2000 - G.Juyn * */
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/* * - fixed sRGB precedence for gamma_only corection * */
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/* * * */
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/* * 0.9.4 - 12/16/2000 - G.Juyn * */
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/* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */
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/* * * */
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/* * 1.0.1 - 03/31/2001 - G.Juyn * */
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/* * - ignore gamma=0 (see png-list for more info) * */
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/* * 1.0.1 - 04/25/2001 - G.Juyn (reported by Gregg Kelly) * */
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/* * - fixed problem with cms profile being created multiple * */
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/* * times when both iCCP & cHRM/gAMA are present * */
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/* * 1.0.1 - 04/25/2001 - G.Juyn * */
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/* * - moved mng_clear_cms to libmng_cms * */
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/* * 1.0.1 - 05/02/2001 - G.Juyn * */
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/* * - added "default" sRGB generation (Thanks Marti!) * */
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/* * * */
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/* * 1.0.5 - 08/19/2002 - G.Juyn * */
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/* * - B597134 - libmng pollutes the linker namespace * */
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/* * 1.0.5 - 09/19/2002 - G.Juyn * */
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/* * - optimized color-correction routines * */
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/* * 1.0.5 - 09/23/2002 - G.Juyn * */
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/* * - added in-memory color-correction of abstract images * */
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/* * 1.0.5 - 11/08/2002 - G.Juyn * */
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/* * - fixed issues in init_app_cms() * */
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/* * * */
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/* * 1.0.6 - 04/11/2003 - G.Juyn * */
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/* * - B719420 - fixed several MNG_APP_CMS problems * */
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/* * 1.0.6 - 07/11/2003 - G. R-P * */
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/* * - added conditional MNG_SKIPCHUNK_cHRM/iCCP * */
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/* * * */
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/* * 1.0.9 - 12/20/2004 - G.Juyn * */
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/* * - cleaned up macro-invocations (thanks to D. Airlie) * */
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/* * * */
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/* ************************************************************************** */
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#include "libmng.h"
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#include "libmng_data.h"
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#include "libmng_error.h"
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#include "libmng_trace.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "libmng_objects.h"
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#include "libmng_cms.h"
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#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
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#pragma option -A /* force ANSI-C */
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#endif
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/* ************************************************************************** */
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#ifdef MNG_INCLUDE_DISPLAY_PROCS
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/* ************************************************************************** */
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/* * * */
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/* * Little CMS helper routines * */
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/* * * */
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/* ************************************************************************** */
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#ifdef MNG_INCLUDE_LCMS
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#define MNG_CMS_FLAGS 0
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/* ************************************************************************** */
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void mnglcms_initlibrary ()
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{
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cmsErrorAction (LCMS_ERROR_IGNORE); /* LCMS should ignore errors! */
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}
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/* ************************************************************************** */
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mng_cmsprof mnglcms_createfileprofile (mng_pchar zFilename)
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{
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return cmsOpenProfileFromFile (zFilename, "r");
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}
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/* ************************************************************************** */
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mng_cmsprof mnglcms_creatememprofile (mng_uint32 iProfilesize,
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mng_ptr pProfile)
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{
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return cmsOpenProfileFromMem (pProfile, iProfilesize);
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}
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/* ************************************************************************** */
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mng_cmsprof mnglcms_createsrgbprofile (void)
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{
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cmsCIExyY D65;
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cmsCIExyYTRIPLE Rec709Primaries = {
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{0.6400, 0.3300, 1.0},
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{0.3000, 0.6000, 1.0},
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{0.1500, 0.0600, 1.0}
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};
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LPGAMMATABLE Gamma24[3];
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mng_cmsprof hsRGB;
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cmsWhitePointFromTemp(6504, &D65);
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Gamma24[0] = Gamma24[1] = Gamma24[2] = cmsBuildGamma(256, 2.4);
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hsRGB = cmsCreateRGBProfile(&D65, &Rec709Primaries, Gamma24);
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cmsFreeGamma(Gamma24[0]);
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return hsRGB;
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}
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/* ************************************************************************** */
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void mnglcms_freeprofile (mng_cmsprof hProf)
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{
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cmsCloseProfile (hProf);
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return;
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}
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/* ************************************************************************** */
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void mnglcms_freetransform (mng_cmstrans hTrans)
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{
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/* B001 start */
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cmsDeleteTransform (hTrans);
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/* B001 end */
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return;
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}
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/* ************************************************************************** */
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mng_retcode mng_clear_cms (mng_datap pData)
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{
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#ifdef MNG_SUPPORT_TRACE
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MNG_TRACE (pData, MNG_FN_CLEAR_CMS, MNG_LC_START);
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#endif
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if (pData->hTrans) /* transformation still active ? */
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mnglcms_freetransform (pData->hTrans);
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pData->hTrans = 0;
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if (pData->hProf1) /* file profile still active ? */
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mnglcms_freeprofile (pData->hProf1);
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pData->hProf1 = 0;
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#ifdef MNG_SUPPORT_TRACE
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MNG_TRACE (pData, MNG_FN_CLEAR_CMS, MNG_LC_END);
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#endif
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return MNG_NOERROR;
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}
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/* ************************************************************************** */
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#endif /* MNG_INCLUDE_LCMS */
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/* ************************************************************************** */
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/* * * */
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/* * Color-management initialization & correction routines * */
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/* * * */
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/* ************************************************************************** */
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#ifdef MNG_INCLUDE_LCMS
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mng_retcode mng_init_full_cms (mng_datap pData,
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mng_bool bGlobal,
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mng_bool bObject,
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mng_bool bRetrobj)
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{
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mng_cmsprof hProf;
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mng_cmstrans hTrans;
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mng_imagep pImage = MNG_NULL;
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mng_imagedatap pBuf = MNG_NULL;
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#ifdef MNG_SUPPORT_TRACE
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MNG_TRACE (pData, MNG_FN_INIT_FULL_CMS, MNG_LC_START);
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#endif
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if (bObject) /* use object if present ? */
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{ /* current object ? */
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if ((mng_imagep)pData->pCurrentobj)
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pImage = (mng_imagep)pData->pCurrentobj;
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else /* if not; use object 0 */
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pImage = (mng_imagep)pData->pObjzero;
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}
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if (bRetrobj) /* retrieving from an object ? */
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pImage = (mng_imagep)pData->pRetrieveobj;
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if (pImage) /* are we using an object ? */
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pBuf = pImage->pImgbuf; /* then address the buffer */
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if ((!pBuf) || (!pBuf->bCorrected)) /* is the buffer already corrected ? */
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{
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#ifndef MNG_SKIPCHUNK_iCCP
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if (((pBuf) && (pBuf->bHasICCP)) || ((bGlobal) && (pData->bHasglobalICCP)))
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{
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if (!pData->hProf2) /* output profile not defined ? */
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{ /* then assume sRGB !! */
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pData->hProf2 = mnglcms_createsrgbprofile ();
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if (!pData->hProf2) /* handle error ? */
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MNG_ERRORL (pData, MNG_LCMS_NOHANDLE);
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}
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if ((pBuf) && (pBuf->bHasICCP)) /* generate a profile handle */
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hProf = cmsOpenProfileFromMem (pBuf->pProfile, pBuf->iProfilesize);
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else
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hProf = cmsOpenProfileFromMem (pData->pGlobalProfile, pData->iGlobalProfilesize);
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pData->hProf1 = hProf; /* save for future use */
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if (!hProf) /* handle error ? */
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MNG_ERRORL (pData, MNG_LCMS_NOHANDLE);
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#ifndef MNG_NO_16BIT_SUPPORT
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if (pData->bIsRGBA16) /* 16-bit intermediates ? */
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hTrans = cmsCreateTransform (hProf, TYPE_RGBA_16_SE,
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pData->hProf2, TYPE_RGBA_16_SE,
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INTENT_PERCEPTUAL, MNG_CMS_FLAGS);
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else
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#endif
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hTrans = cmsCreateTransform (hProf, TYPE_RGBA_8,
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pData->hProf2, TYPE_RGBA_8,
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INTENT_PERCEPTUAL, MNG_CMS_FLAGS);
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pData->hTrans = hTrans; /* save for future use */
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if (!hTrans) /* handle error ? */
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MNG_ERRORL (pData, MNG_LCMS_NOTRANS);
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/* load color-correction routine */
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pData->fCorrectrow = (mng_fptr)mng_correct_full_cms;
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return MNG_NOERROR; /* and done */
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}
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else
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#endif
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if (((pBuf) && (pBuf->bHasSRGB)) || ((bGlobal) && (pData->bHasglobalSRGB)))
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{
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mng_uint8 iIntent;
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if (pData->bIssRGB) /* sRGB system ? */
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return MNG_NOERROR; /* no conversion required */
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if (!pData->hProf3) /* sRGB profile not defined ? */
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{ /* then create it implicitly !! */
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pData->hProf3 = mnglcms_createsrgbprofile ();
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if (!pData->hProf3) /* handle error ? */
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MNG_ERRORL (pData, MNG_LCMS_NOHANDLE);
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}
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hProf = pData->hProf3; /* convert from sRGB profile */
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if ((pBuf) && (pBuf->bHasSRGB)) /* determine rendering intent */
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iIntent = pBuf->iRenderingintent;
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else
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iIntent = pData->iGlobalRendintent;
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if (pData->bIsRGBA16) /* 16-bit intermediates ? */
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hTrans = cmsCreateTransform (hProf, TYPE_RGBA_16_SE,
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pData->hProf2, TYPE_RGBA_16_SE,
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iIntent, MNG_CMS_FLAGS);
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else
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hTrans = cmsCreateTransform (hProf, TYPE_RGBA_8,
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pData->hProf2, TYPE_RGBA_8,
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iIntent, MNG_CMS_FLAGS);
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pData->hTrans = hTrans; /* save for future use */
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if (!hTrans) /* handle error ? */
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MNG_ERRORL (pData, MNG_LCMS_NOTRANS);
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/* load color-correction routine */
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pData->fCorrectrow = (mng_fptr)mng_correct_full_cms;
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return MNG_NOERROR; /* and done */
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}
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else
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if ( (((pBuf) && (pBuf->bHasCHRM)) || ((bGlobal) && (pData->bHasglobalCHRM))) &&
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( ((pBuf) && (pBuf->bHasGAMA) && (pBuf->iGamma > 0)) ||
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((bGlobal) && (pData->bHasglobalGAMA) && (pData->iGlobalGamma > 0)) ) )
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{
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mng_CIExyY sWhitepoint;
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mng_CIExyYTRIPLE sPrimaries;
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mng_gammatabp pGammatable[3];
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mng_float dGamma;
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if (!pData->hProf2) /* output profile not defined ? */
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{ /* then assume sRGB !! */
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pData->hProf2 = mnglcms_createsrgbprofile ();
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if (!pData->hProf2) /* handle error ? */
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MNG_ERRORL (pData, MNG_LCMS_NOHANDLE);
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}
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#ifndef MNG_SKIPCHUNK_cHRM
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if ((pBuf) && (pBuf->bHasCHRM)) /* local cHRM ? */
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{
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sWhitepoint.x = (mng_float)pBuf->iWhitepointx / 100000;
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336 |
sWhitepoint.y = (mng_float)pBuf->iWhitepointy / 100000;
|
|
|
337 |
sPrimaries.Red.x = (mng_float)pBuf->iPrimaryredx / 100000;
|
|
|
338 |
sPrimaries.Red.y = (mng_float)pBuf->iPrimaryredy / 100000;
|
|
|
339 |
sPrimaries.Green.x = (mng_float)pBuf->iPrimarygreenx / 100000;
|
|
|
340 |
sPrimaries.Green.y = (mng_float)pBuf->iPrimarygreeny / 100000;
|
|
|
341 |
sPrimaries.Blue.x = (mng_float)pBuf->iPrimarybluex / 100000;
|
|
|
342 |
sPrimaries.Blue.y = (mng_float)pBuf->iPrimarybluey / 100000;
|
|
|
343 |
}
|
|
|
344 |
else
|
|
|
345 |
{
|
|
|
346 |
sWhitepoint.x = (mng_float)pData->iGlobalWhitepointx / 100000;
|
|
|
347 |
sWhitepoint.y = (mng_float)pData->iGlobalWhitepointy / 100000;
|
|
|
348 |
sPrimaries.Red.x = (mng_float)pData->iGlobalPrimaryredx / 100000;
|
|
|
349 |
sPrimaries.Red.y = (mng_float)pData->iGlobalPrimaryredy / 100000;
|
|
|
350 |
sPrimaries.Green.x = (mng_float)pData->iGlobalPrimarygreenx / 100000;
|
|
|
351 |
sPrimaries.Green.y = (mng_float)pData->iGlobalPrimarygreeny / 100000;
|
|
|
352 |
sPrimaries.Blue.x = (mng_float)pData->iGlobalPrimarybluex / 100000;
|
|
|
353 |
sPrimaries.Blue.y = (mng_float)pData->iGlobalPrimarybluey / 100000;
|
|
|
354 |
}
|
|
|
355 |
#endif
|
|
|
356 |
|
|
|
357 |
sWhitepoint.Y = /* Y component is always 1.0 */
|
|
|
358 |
sPrimaries.Red.Y =
|
|
|
359 |
sPrimaries.Green.Y =
|
|
|
360 |
sPrimaries.Blue.Y = 1.0;
|
|
|
361 |
|
|
|
362 |
if ((pBuf) && (pBuf->bHasGAMA)) /* get the gamma value */
|
|
|
363 |
dGamma = (mng_float)pBuf->iGamma / 100000;
|
|
|
364 |
else
|
|
|
365 |
dGamma = (mng_float)pData->iGlobalGamma / 100000;
|
|
|
366 |
|
|
|
367 |
dGamma = pData->dViewgamma / dGamma;
|
|
|
368 |
|
|
|
369 |
pGammatable [0] = /* and build the lookup tables */
|
|
|
370 |
pGammatable [1] =
|
|
|
371 |
pGammatable [2] = cmsBuildGamma (256, dGamma);
|
|
|
372 |
|
|
|
373 |
if (!pGammatable [0]) /* enough memory ? */
|
|
|
374 |
MNG_ERRORL (pData, MNG_LCMS_NOMEM);
|
|
|
375 |
/* create the profile */
|
|
|
376 |
hProf = cmsCreateRGBProfile (&sWhitepoint, &sPrimaries, pGammatable);
|
|
|
377 |
|
|
|
378 |
cmsFreeGamma (pGammatable [0]); /* free the temporary gamma tables ? */
|
|
|
379 |
/* yes! but just the one! */
|
|
|
380 |
|
|
|
381 |
pData->hProf1 = hProf; /* save for future use */
|
|
|
382 |
|
|
|
383 |
if (!hProf) /* handle error ? */
|
|
|
384 |
MNG_ERRORL (pData, MNG_LCMS_NOHANDLE);
|
|
|
385 |
|
|
|
386 |
if (pData->bIsRGBA16) /* 16-bit intermediates ? */
|
|
|
387 |
hTrans = cmsCreateTransform (hProf, TYPE_RGBA_16_SE,
|
|
|
388 |
pData->hProf2, TYPE_RGBA_16_SE,
|
|
|
389 |
INTENT_PERCEPTUAL, MNG_CMS_FLAGS);
|
|
|
390 |
else
|
|
|
391 |
hTrans = cmsCreateTransform (hProf, TYPE_RGBA_8,
|
|
|
392 |
pData->hProf2, TYPE_RGBA_8,
|
|
|
393 |
INTENT_PERCEPTUAL, MNG_CMS_FLAGS);
|
|
|
394 |
|
|
|
395 |
pData->hTrans = hTrans; /* save for future use */
|
|
|
396 |
|
|
|
397 |
if (!hTrans) /* handle error ? */
|
|
|
398 |
MNG_ERRORL (pData, MNG_LCMS_NOTRANS);
|
|
|
399 |
/* load color-correction routine */
|
|
|
400 |
pData->fCorrectrow = (mng_fptr)mng_correct_full_cms;
|
|
|
401 |
|
|
|
402 |
return MNG_NOERROR; /* and done */
|
|
|
403 |
}
|
|
|
404 |
}
|
|
|
405 |
|
|
|
406 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
407 |
MNG_TRACE (pData, MNG_FN_INIT_FULL_CMS, MNG_LC_END);
|
|
|
408 |
#endif
|
|
|
409 |
/* if we get here, we'll only do gamma */
|
|
|
410 |
return mng_init_gamma_only (pData, bGlobal, bObject, bRetrobj);
|
|
|
411 |
}
|
|
|
412 |
#endif /* MNG_INCLUDE_LCMS */
|
|
|
413 |
|
|
|
414 |
/* ************************************************************************** */
|
|
|
415 |
|
|
|
416 |
#ifdef MNG_INCLUDE_LCMS
|
|
|
417 |
mng_retcode mng_correct_full_cms (mng_datap pData)
|
|
|
418 |
{
|
|
|
419 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
420 |
MNG_TRACE (pData, MNG_FN_CORRECT_FULL_CMS, MNG_LC_START);
|
|
|
421 |
#endif
|
|
|
422 |
|
|
|
423 |
cmsDoTransform (pData->hTrans, pData->pRGBArow, pData->pRGBArow, pData->iRowsamples);
|
|
|
424 |
|
|
|
425 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
426 |
MNG_TRACE (pData, MNG_FN_CORRECT_FULL_CMS, MNG_LC_END);
|
|
|
427 |
#endif
|
|
|
428 |
|
|
|
429 |
return MNG_NOERROR;
|
|
|
430 |
}
|
|
|
431 |
#endif /* MNG_INCLUDE_LCMS */
|
|
|
432 |
|
|
|
433 |
/* ************************************************************************** */
|
|
|
434 |
|
|
|
435 |
#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS)
|
|
|
436 |
mng_retcode mng_init_gamma_only (mng_datap pData,
|
|
|
437 |
mng_bool bGlobal,
|
|
|
438 |
mng_bool bObject,
|
|
|
439 |
mng_bool bRetrobj)
|
|
|
440 |
{
|
|
|
441 |
mng_float dGamma;
|
|
|
442 |
mng_imagep pImage = MNG_NULL;
|
|
|
443 |
mng_imagedatap pBuf = MNG_NULL;
|
|
|
444 |
|
|
|
445 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
446 |
MNG_TRACE (pData, MNG_FN_INIT_GAMMA_ONLY, MNG_LC_START);
|
|
|
447 |
#endif
|
|
|
448 |
|
|
|
449 |
if (bObject) /* use object if present ? */
|
|
|
450 |
{ /* current object ? */
|
|
|
451 |
if ((mng_imagep)pData->pCurrentobj)
|
|
|
452 |
pImage = (mng_imagep)pData->pCurrentobj;
|
|
|
453 |
else /* if not; use object 0 */
|
|
|
454 |
pImage = (mng_imagep)pData->pObjzero;
|
|
|
455 |
}
|
|
|
456 |
|
|
|
457 |
if (bRetrobj) /* retrieving from an object ? */
|
|
|
458 |
pImage = (mng_imagep)pData->pRetrieveobj;
|
|
|
459 |
|
|
|
460 |
if (pImage) /* are we using an object ? */
|
|
|
461 |
pBuf = pImage->pImgbuf; /* then address the buffer */
|
|
|
462 |
|
|
|
463 |
if ((!pBuf) || (!pBuf->bCorrected)) /* is the buffer already corrected ? */
|
|
|
464 |
{
|
|
|
465 |
if ((pBuf) && (pBuf->bHasSRGB)) /* get the gamma value */
|
|
|
466 |
dGamma = 0.45455;
|
|
|
467 |
else
|
|
|
468 |
if ((pBuf) && (pBuf->bHasGAMA))
|
|
|
469 |
dGamma = (mng_float)pBuf->iGamma / 100000;
|
|
|
470 |
else
|
|
|
471 |
if ((bGlobal) && (pData->bHasglobalSRGB))
|
|
|
472 |
dGamma = 0.45455;
|
|
|
473 |
else
|
|
|
474 |
if ((bGlobal) && (pData->bHasglobalGAMA))
|
|
|
475 |
dGamma = (mng_float)pData->iGlobalGamma / 100000;
|
|
|
476 |
else
|
|
|
477 |
dGamma = pData->dDfltimggamma;
|
|
|
478 |
|
|
|
479 |
if (dGamma > 0) /* ignore gamma=0 */
|
|
|
480 |
{
|
|
|
481 |
dGamma = pData->dViewgamma / (dGamma * pData->dDisplaygamma);
|
|
|
482 |
|
|
|
483 |
if (dGamma != pData->dLastgamma) /* lookup table needs to be computed ? */
|
|
|
484 |
{
|
|
|
485 |
mng_int32 iX;
|
|
|
486 |
|
|
|
487 |
pData->aGammatab [0] = 0;
|
|
|
488 |
|
|
|
489 |
for (iX = 1; iX <= 255; iX++)
|
|
|
490 |
pData->aGammatab [iX] = (mng_uint8)(pow (iX / 255.0, dGamma) * 255 + 0.5);
|
|
|
491 |
|
|
|
492 |
pData->dLastgamma = dGamma; /* keep for next time */
|
|
|
493 |
}
|
|
|
494 |
/* load color-correction routine */
|
|
|
495 |
pData->fCorrectrow = (mng_fptr)mng_correct_gamma_only;
|
|
|
496 |
}
|
|
|
497 |
}
|
|
|
498 |
|
|
|
499 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
500 |
MNG_TRACE (pData, MNG_FN_INIT_GAMMA_ONLY, MNG_LC_END);
|
|
|
501 |
#endif
|
|
|
502 |
|
|
|
503 |
return MNG_NOERROR;
|
|
|
504 |
}
|
|
|
505 |
#endif /* MNG_GAMMA_ONLY || MNG_FULL_CMS || MNG_APP_CMS */
|
|
|
506 |
|
|
|
507 |
/* ************************************************************************** */
|
|
|
508 |
|
|
|
509 |
#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS)
|
|
|
510 |
mng_retcode mng_correct_gamma_only (mng_datap pData)
|
|
|
511 |
{
|
|
|
512 |
mng_uint8p pWork;
|
|
|
513 |
mng_int32 iX;
|
|
|
514 |
|
|
|
515 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
516 |
MNG_TRACE (pData, MNG_FN_CORRECT_GAMMA_ONLY, MNG_LC_START);
|
|
|
517 |
#endif
|
|
|
518 |
|
|
|
519 |
pWork = pData->pRGBArow; /* address intermediate row */
|
|
|
520 |
|
|
|
521 |
if (pData->bIsRGBA16) /* 16-bit intermediate row ? */
|
|
|
522 |
{
|
|
|
523 |
|
|
|
524 |
|
|
|
525 |
/* TODO: 16-bit precision gamma processing */
|
|
|
526 |
/* we'll just do the high-order byte for now */
|
|
|
527 |
|
|
|
528 |
|
|
|
529 |
/* convert all samples in the row */
|
|
|
530 |
for (iX = 0; iX < pData->iRowsamples; iX++)
|
|
|
531 |
{ /* using the precalculated gamma lookup table */
|
|
|
532 |
*pWork = pData->aGammatab [*pWork];
|
|
|
533 |
*(pWork+2) = pData->aGammatab [*(pWork+2)];
|
|
|
534 |
*(pWork+4) = pData->aGammatab [*(pWork+4)];
|
|
|
535 |
|
|
|
536 |
pWork += 8;
|
|
|
537 |
}
|
|
|
538 |
}
|
|
|
539 |
else
|
|
|
540 |
{ /* convert all samples in the row */
|
|
|
541 |
for (iX = 0; iX < pData->iRowsamples; iX++)
|
|
|
542 |
{ /* using the precalculated gamma lookup table */
|
|
|
543 |
*pWork = pData->aGammatab [*pWork];
|
|
|
544 |
*(pWork+1) = pData->aGammatab [*(pWork+1)];
|
|
|
545 |
*(pWork+2) = pData->aGammatab [*(pWork+2)];
|
|
|
546 |
|
|
|
547 |
pWork += 4;
|
|
|
548 |
}
|
|
|
549 |
}
|
|
|
550 |
|
|
|
551 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
552 |
MNG_TRACE (pData, MNG_FN_CORRECT_GAMMA_ONLY, MNG_LC_END);
|
|
|
553 |
#endif
|
|
|
554 |
|
|
|
555 |
return MNG_NOERROR;
|
|
|
556 |
}
|
|
|
557 |
#endif /* MNG_GAMMA_ONLY || MNG_FULL_CMS || MNG_APP_CMS */
|
|
|
558 |
|
|
|
559 |
/* ************************************************************************** */
|
|
|
560 |
|
|
|
561 |
#ifdef MNG_APP_CMS
|
|
|
562 |
mng_retcode mng_init_app_cms (mng_datap pData,
|
|
|
563 |
mng_bool bGlobal,
|
|
|
564 |
mng_bool bObject,
|
|
|
565 |
mng_bool bRetrobj)
|
|
|
566 |
{
|
|
|
567 |
mng_imagep pImage = MNG_NULL;
|
|
|
568 |
mng_imagedatap pBuf = MNG_NULL;
|
|
|
569 |
mng_bool bDone = MNG_FALSE;
|
|
|
570 |
mng_retcode iRetcode;
|
|
|
571 |
|
|
|
572 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
573 |
MNG_TRACE (pData, MNG_FN_INIT_APP_CMS, MNG_LC_START);
|
|
|
574 |
#endif
|
|
|
575 |
|
|
|
576 |
if (bObject) /* use object if present ? */
|
|
|
577 |
{ /* current object ? */
|
|
|
578 |
if ((mng_imagep)pData->pCurrentobj)
|
|
|
579 |
pImage = (mng_imagep)pData->pCurrentobj;
|
|
|
580 |
else /* if not; use object 0 */
|
|
|
581 |
pImage = (mng_imagep)pData->pObjzero;
|
|
|
582 |
}
|
|
|
583 |
|
|
|
584 |
if (bRetrobj) /* retrieving from an object ? */
|
|
|
585 |
pImage = (mng_imagep)pData->pRetrieveobj;
|
|
|
586 |
|
|
|
587 |
if (pImage) /* are we using an object ? */
|
|
|
588 |
pBuf = pImage->pImgbuf; /* then address the buffer */
|
|
|
589 |
|
|
|
590 |
if ((!pBuf) || (!pBuf->bCorrected)) /* is the buffer already corrected ? */
|
|
|
591 |
{
|
|
|
592 |
#ifndef MNG_SKIPCHUNK_iCCP
|
|
|
593 |
if ( (pData->fProcessiccp) &&
|
|
|
594 |
(((pBuf) && (pBuf->bHasICCP)) || ((bGlobal) && (pData->bHasglobalICCP))) )
|
|
|
595 |
{
|
|
|
596 |
mng_uint32 iProfilesize;
|
|
|
597 |
mng_ptr pProfile;
|
|
|
598 |
|
|
|
599 |
if ((pBuf) && (pBuf->bHasICCP)) /* get the right profile */
|
|
|
600 |
{
|
|
|
601 |
iProfilesize = pBuf->iProfilesize;
|
|
|
602 |
pProfile = pBuf->pProfile;
|
|
|
603 |
}
|
|
|
604 |
else
|
|
|
605 |
{
|
|
|
606 |
iProfilesize = pData->iGlobalProfilesize;
|
|
|
607 |
pProfile = pData->pGlobalProfile;
|
|
|
608 |
}
|
|
|
609 |
/* inform the app */
|
|
|
610 |
if (!pData->fProcessiccp ((mng_handle)pData, iProfilesize, pProfile))
|
|
|
611 |
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
|
612 |
/* load color-correction routine */
|
|
|
613 |
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
|
614 |
bDone = MNG_TRUE;
|
|
|
615 |
}
|
|
|
616 |
#endif
|
|
|
617 |
|
|
|
618 |
if ( (pData->fProcesssrgb) &&
|
|
|
619 |
(((pBuf) && (pBuf->bHasSRGB)) || ((bGlobal) && (pData->bHasglobalSRGB))) )
|
|
|
620 |
{
|
|
|
621 |
mng_uint8 iIntent;
|
|
|
622 |
|
|
|
623 |
if ((pBuf) && (pBuf->bHasSRGB)) /* determine rendering intent */
|
|
|
624 |
iIntent = pBuf->iRenderingintent;
|
|
|
625 |
else
|
|
|
626 |
iIntent = pData->iGlobalRendintent;
|
|
|
627 |
/* inform the app */
|
|
|
628 |
if (!pData->fProcesssrgb ((mng_handle)pData, iIntent))
|
|
|
629 |
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
|
630 |
/* load color-correction routine */
|
|
|
631 |
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
|
632 |
bDone = MNG_TRUE;
|
|
|
633 |
}
|
|
|
634 |
|
|
|
635 |
#ifndef MNG_SKIPCHUNK_cHRM
|
|
|
636 |
if ( (pData->fProcesschroma) &&
|
|
|
637 |
(((pBuf) && (pBuf->bHasCHRM)) || ((bGlobal) && (pData->bHasglobalCHRM))) )
|
|
|
638 |
{
|
|
|
639 |
mng_uint32 iWhitepointx, iWhitepointy;
|
|
|
640 |
mng_uint32 iPrimaryredx, iPrimaryredy;
|
|
|
641 |
mng_uint32 iPrimarygreenx, iPrimarygreeny;
|
|
|
642 |
mng_uint32 iPrimarybluex, iPrimarybluey;
|
|
|
643 |
|
|
|
644 |
if ((pBuf) && (pBuf->bHasCHRM)) /* local cHRM ? */
|
|
|
645 |
{
|
|
|
646 |
iWhitepointx = pBuf->iWhitepointx;
|
|
|
647 |
iWhitepointy = pBuf->iWhitepointy;
|
|
|
648 |
iPrimaryredx = pBuf->iPrimaryredx;
|
|
|
649 |
iPrimaryredy = pBuf->iPrimaryredy;
|
|
|
650 |
iPrimarygreenx = pBuf->iPrimarygreenx;
|
|
|
651 |
iPrimarygreeny = pBuf->iPrimarygreeny;
|
|
|
652 |
iPrimarybluex = pBuf->iPrimarybluex;
|
|
|
653 |
iPrimarybluey = pBuf->iPrimarybluey;
|
|
|
654 |
}
|
|
|
655 |
else
|
|
|
656 |
{
|
|
|
657 |
iWhitepointx = pData->iGlobalWhitepointx;
|
|
|
658 |
iWhitepointy = pData->iGlobalWhitepointy;
|
|
|
659 |
iPrimaryredx = pData->iGlobalPrimaryredx;
|
|
|
660 |
iPrimaryredy = pData->iGlobalPrimaryredy;
|
|
|
661 |
iPrimarygreenx = pData->iGlobalPrimarygreenx;
|
|
|
662 |
iPrimarygreeny = pData->iGlobalPrimarygreeny;
|
|
|
663 |
iPrimarybluex = pData->iGlobalPrimarybluex;
|
|
|
664 |
iPrimarybluey = pData->iGlobalPrimarybluey;
|
|
|
665 |
}
|
|
|
666 |
/* inform the app */
|
|
|
667 |
if (!pData->fProcesschroma ((mng_handle)pData, iWhitepointx, iWhitepointy,
|
|
|
668 |
iPrimaryredx, iPrimaryredy,
|
|
|
669 |
iPrimarygreenx, iPrimarygreeny,
|
|
|
670 |
iPrimarybluex, iPrimarybluey))
|
|
|
671 |
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
|
672 |
/* load color-correction routine */
|
|
|
673 |
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
|
674 |
bDone = MNG_TRUE;
|
|
|
675 |
}
|
|
|
676 |
#endif
|
|
|
677 |
|
|
|
678 |
if ( (pData->fProcessgamma) &&
|
|
|
679 |
(((pBuf) && (pBuf->bHasGAMA)) || ((bGlobal) && (pData->bHasglobalGAMA))) )
|
|
|
680 |
{
|
|
|
681 |
mng_uint32 iGamma;
|
|
|
682 |
|
|
|
683 |
if ((pBuf) && (pBuf->bHasGAMA)) /* get the gamma value */
|
|
|
684 |
iGamma = pBuf->iGamma;
|
|
|
685 |
else
|
|
|
686 |
iGamma = pData->iGlobalGamma;
|
|
|
687 |
/* inform the app */
|
|
|
688 |
if (!pData->fProcessgamma ((mng_handle)pData, iGamma))
|
|
|
689 |
{ /* app wants us to use internal routines ! */
|
|
|
690 |
iRetcode = mng_init_gamma_only (pData, bGlobal, bObject, bRetrobj);
|
|
|
691 |
if (iRetcode) /* on error bail out */
|
|
|
692 |
return iRetcode;
|
|
|
693 |
}
|
|
|
694 |
else
|
|
|
695 |
{ /* load color-correction routine */
|
|
|
696 |
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
|
697 |
}
|
|
|
698 |
|
|
|
699 |
bDone = MNG_TRUE;
|
|
|
700 |
}
|
|
|
701 |
|
|
|
702 |
if (!bDone) /* no color-info at all ? */
|
|
|
703 |
{
|
|
|
704 |
/* then use default image gamma ! */
|
|
|
705 |
if (!pData->fProcessgamma ((mng_handle)pData,
|
|
|
706 |
(mng_uint32)((pData->dDfltimggamma * 100000) + 0.5)))
|
|
|
707 |
{ /* app wants us to use internal routines ! */
|
|
|
708 |
iRetcode = mng_init_gamma_only (pData, bGlobal, bObject, bRetrobj);
|
|
|
709 |
if (iRetcode) /* on error bail out */
|
|
|
710 |
return iRetcode;
|
|
|
711 |
}
|
|
|
712 |
else
|
|
|
713 |
{ /* load color-correction routine */
|
|
|
714 |
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
|
715 |
}
|
|
|
716 |
}
|
|
|
717 |
}
|
|
|
718 |
|
|
|
719 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
720 |
MNG_TRACE (pData, MNG_FN_INIT_APP_CMS, MNG_LC_END);
|
|
|
721 |
#endif
|
|
|
722 |
|
|
|
723 |
return MNG_NOERROR;
|
|
|
724 |
}
|
|
|
725 |
#endif /* MNG_APP_CMS */
|
|
|
726 |
|
|
|
727 |
/* ************************************************************************** */
|
|
|
728 |
|
|
|
729 |
#ifdef MNG_APP_CMS
|
|
|
730 |
mng_retcode mng_correct_app_cms (mng_datap pData)
|
|
|
731 |
{
|
|
|
732 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
733 |
MNG_TRACE (pData, MNG_FN_CORRECT_APP_CMS, MNG_LC_START);
|
|
|
734 |
#endif
|
|
|
735 |
|
|
|
736 |
if (pData->fProcessarow) /* let the app do something with our row */
|
|
|
737 |
if (!pData->fProcessarow ((mng_handle)pData, pData->iRowsamples,
|
|
|
738 |
pData->bIsRGBA16, pData->pRGBArow))
|
|
|
739 |
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
|
740 |
|
|
|
741 |
#ifdef MNG_SUPPORT_TRACE
|
|
|
742 |
MNG_TRACE (pData, MNG_FN_CORRECT_APP_CMS, MNG_LC_END);
|
|
|
743 |
#endif
|
|
|
744 |
|
|
|
745 |
return MNG_NOERROR;
|
|
|
746 |
}
|
|
|
747 |
#endif /* MNG_APP_CMS */
|
|
|
748 |
|
|
|
749 |
/* ************************************************************************** */
|
|
|
750 |
|
|
|
751 |
#endif /* MNG_INCLUDE_DISPLAY_PROCS */
|
|
|
752 |
|
|
|
753 |
/* ************************************************************************** */
|
|
|
754 |
/* * end of file * */
|
|
|
755 |
/* ************************************************************************** */
|
|
|
756 |
|
|
|
757 |
|
|
|
758 |
|