mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-25 07:04:45 +00:00
759 lines
30 KiB
C
759 lines
30 KiB
C
/* ************************************************************************** */
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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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sWhitepoint.y = (mng_float)pBuf->iWhitepointy / 100000;
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sPrimaries.Red.x = (mng_float)pBuf->iPrimaryredx / 100000;
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sPrimaries.Red.y = (mng_float)pBuf->iPrimaryredy / 100000;
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sPrimaries.Green.x = (mng_float)pBuf->iPrimarygreenx / 100000;
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sPrimaries.Green.y = (mng_float)pBuf->iPrimarygreeny / 100000;
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sPrimaries.Blue.x = (mng_float)pBuf->iPrimarybluex / 100000;
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sPrimaries.Blue.y = (mng_float)pBuf->iPrimarybluey / 100000;
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}
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else
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{
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sWhitepoint.x = (mng_float)pData->iGlobalWhitepointx / 100000;
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sWhitepoint.y = (mng_float)pData->iGlobalWhitepointy / 100000;
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sPrimaries.Red.x = (mng_float)pData->iGlobalPrimaryredx / 100000;
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sPrimaries.Red.y = (mng_float)pData->iGlobalPrimaryredy / 100000;
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sPrimaries.Green.x = (mng_float)pData->iGlobalPrimarygreenx / 100000;
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sPrimaries.Green.y = (mng_float)pData->iGlobalPrimarygreeny / 100000;
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sPrimaries.Blue.x = (mng_float)pData->iGlobalPrimarybluex / 100000;
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sPrimaries.Blue.y = (mng_float)pData->iGlobalPrimarybluey / 100000;
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}
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#endif
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sWhitepoint.Y = /* Y component is always 1.0 */
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sPrimaries.Red.Y =
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sPrimaries.Green.Y =
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sPrimaries.Blue.Y = 1.0;
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if ((pBuf) && (pBuf->bHasGAMA)) /* get the gamma value */
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dGamma = (mng_float)pBuf->iGamma / 100000;
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else
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dGamma = (mng_float)pData->iGlobalGamma / 100000;
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dGamma = pData->dViewgamma / dGamma;
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pGammatable [0] = /* and build the lookup tables */
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pGammatable [1] =
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pGammatable [2] = cmsBuildGamma (256, dGamma);
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if (!pGammatable [0]) /* enough memory ? */
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MNG_ERRORL (pData, MNG_LCMS_NOMEM);
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/* create the profile */
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hProf = cmsCreateRGBProfile (&sWhitepoint, &sPrimaries, pGammatable);
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cmsFreeGamma (pGammatable [0]); /* free the temporary gamma tables ? */
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/* yes! but just the one! */
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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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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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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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}
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#ifdef MNG_SUPPORT_TRACE
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MNG_TRACE (pData, MNG_FN_INIT_FULL_CMS, MNG_LC_END);
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#endif
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/* if we get here, we'll only do gamma */
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return mng_init_gamma_only (pData, bGlobal, bObject, bRetrobj);
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}
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#endif /* MNG_INCLUDE_LCMS */
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/* ************************************************************************** */
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#ifdef MNG_INCLUDE_LCMS
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mng_retcode mng_correct_full_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_CORRECT_FULL_CMS, MNG_LC_START);
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#endif
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cmsDoTransform (pData->hTrans, pData->pRGBArow, pData->pRGBArow, pData->iRowsamples);
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#ifdef MNG_SUPPORT_TRACE
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MNG_TRACE (pData, MNG_FN_CORRECT_FULL_CMS, MNG_LC_END);
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#endif
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return MNG_NOERROR;
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}
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#endif /* MNG_INCLUDE_LCMS */
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/* ************************************************************************** */
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#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS)
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mng_retcode mng_init_gamma_only (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_float dGamma;
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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_GAMMA_ONLY, 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 ? */
|
|
pBuf = pImage->pImgbuf; /* then address the buffer */
|
|
|
|
if ((!pBuf) || (!pBuf->bCorrected)) /* is the buffer already corrected ? */
|
|
{
|
|
if ((pBuf) && (pBuf->bHasSRGB)) /* get the gamma value */
|
|
dGamma = 0.45455;
|
|
else
|
|
if ((pBuf) && (pBuf->bHasGAMA))
|
|
dGamma = (mng_float)pBuf->iGamma / 100000;
|
|
else
|
|
if ((bGlobal) && (pData->bHasglobalSRGB))
|
|
dGamma = 0.45455;
|
|
else
|
|
if ((bGlobal) && (pData->bHasglobalGAMA))
|
|
dGamma = (mng_float)pData->iGlobalGamma / 100000;
|
|
else
|
|
dGamma = pData->dDfltimggamma;
|
|
|
|
if (dGamma > 0) /* ignore gamma=0 */
|
|
{
|
|
dGamma = pData->dViewgamma / (dGamma * pData->dDisplaygamma);
|
|
|
|
if (dGamma != pData->dLastgamma) /* lookup table needs to be computed ? */
|
|
{
|
|
mng_int32 iX;
|
|
|
|
pData->aGammatab [0] = 0;
|
|
|
|
for (iX = 1; iX <= 255; iX++)
|
|
pData->aGammatab [iX] = (mng_uint8)(pow (iX / 255.0, dGamma) * 255 + 0.5);
|
|
|
|
pData->dLastgamma = dGamma; /* keep for next time */
|
|
}
|
|
/* load color-correction routine */
|
|
pData->fCorrectrow = (mng_fptr)mng_correct_gamma_only;
|
|
}
|
|
}
|
|
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_INIT_GAMMA_ONLY, MNG_LC_END);
|
|
#endif
|
|
|
|
return MNG_NOERROR;
|
|
}
|
|
#endif /* MNG_GAMMA_ONLY || MNG_FULL_CMS || MNG_APP_CMS */
|
|
|
|
/* ************************************************************************** */
|
|
|
|
#if defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS) || defined(MNG_APP_CMS)
|
|
mng_retcode mng_correct_gamma_only (mng_datap pData)
|
|
{
|
|
mng_uint8p pWork;
|
|
mng_int32 iX;
|
|
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_CORRECT_GAMMA_ONLY, MNG_LC_START);
|
|
#endif
|
|
|
|
pWork = pData->pRGBArow; /* address intermediate row */
|
|
|
|
if (pData->bIsRGBA16) /* 16-bit intermediate row ? */
|
|
{
|
|
|
|
|
|
/* TODO: 16-bit precision gamma processing */
|
|
/* we'll just do the high-order byte for now */
|
|
|
|
|
|
/* convert all samples in the row */
|
|
for (iX = 0; iX < pData->iRowsamples; iX++)
|
|
{ /* using the precalculated gamma lookup table */
|
|
*pWork = pData->aGammatab [*pWork];
|
|
*(pWork+2) = pData->aGammatab [*(pWork+2)];
|
|
*(pWork+4) = pData->aGammatab [*(pWork+4)];
|
|
|
|
pWork += 8;
|
|
}
|
|
}
|
|
else
|
|
{ /* convert all samples in the row */
|
|
for (iX = 0; iX < pData->iRowsamples; iX++)
|
|
{ /* using the precalculated gamma lookup table */
|
|
*pWork = pData->aGammatab [*pWork];
|
|
*(pWork+1) = pData->aGammatab [*(pWork+1)];
|
|
*(pWork+2) = pData->aGammatab [*(pWork+2)];
|
|
|
|
pWork += 4;
|
|
}
|
|
}
|
|
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_CORRECT_GAMMA_ONLY, MNG_LC_END);
|
|
#endif
|
|
|
|
return MNG_NOERROR;
|
|
}
|
|
#endif /* MNG_GAMMA_ONLY || MNG_FULL_CMS || MNG_APP_CMS */
|
|
|
|
/* ************************************************************************** */
|
|
|
|
#ifdef MNG_APP_CMS
|
|
mng_retcode mng_init_app_cms (mng_datap pData,
|
|
mng_bool bGlobal,
|
|
mng_bool bObject,
|
|
mng_bool bRetrobj)
|
|
{
|
|
mng_imagep pImage = MNG_NULL;
|
|
mng_imagedatap pBuf = MNG_NULL;
|
|
mng_bool bDone = MNG_FALSE;
|
|
mng_retcode iRetcode;
|
|
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_INIT_APP_CMS, MNG_LC_START);
|
|
#endif
|
|
|
|
if (bObject) /* use object if present ? */
|
|
{ /* current object ? */
|
|
if ((mng_imagep)pData->pCurrentobj)
|
|
pImage = (mng_imagep)pData->pCurrentobj;
|
|
else /* if not; use object 0 */
|
|
pImage = (mng_imagep)pData->pObjzero;
|
|
}
|
|
|
|
if (bRetrobj) /* retrieving from an object ? */
|
|
pImage = (mng_imagep)pData->pRetrieveobj;
|
|
|
|
if (pImage) /* are we using an object ? */
|
|
pBuf = pImage->pImgbuf; /* then address the buffer */
|
|
|
|
if ((!pBuf) || (!pBuf->bCorrected)) /* is the buffer already corrected ? */
|
|
{
|
|
#ifndef MNG_SKIPCHUNK_iCCP
|
|
if ( (pData->fProcessiccp) &&
|
|
(((pBuf) && (pBuf->bHasICCP)) || ((bGlobal) && (pData->bHasglobalICCP))) )
|
|
{
|
|
mng_uint32 iProfilesize;
|
|
mng_ptr pProfile;
|
|
|
|
if ((pBuf) && (pBuf->bHasICCP)) /* get the right profile */
|
|
{
|
|
iProfilesize = pBuf->iProfilesize;
|
|
pProfile = pBuf->pProfile;
|
|
}
|
|
else
|
|
{
|
|
iProfilesize = pData->iGlobalProfilesize;
|
|
pProfile = pData->pGlobalProfile;
|
|
}
|
|
/* inform the app */
|
|
if (!pData->fProcessiccp ((mng_handle)pData, iProfilesize, pProfile))
|
|
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
/* load color-correction routine */
|
|
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
bDone = MNG_TRUE;
|
|
}
|
|
#endif
|
|
|
|
if ( (pData->fProcesssrgb) &&
|
|
(((pBuf) && (pBuf->bHasSRGB)) || ((bGlobal) && (pData->bHasglobalSRGB))) )
|
|
{
|
|
mng_uint8 iIntent;
|
|
|
|
if ((pBuf) && (pBuf->bHasSRGB)) /* determine rendering intent */
|
|
iIntent = pBuf->iRenderingintent;
|
|
else
|
|
iIntent = pData->iGlobalRendintent;
|
|
/* inform the app */
|
|
if (!pData->fProcesssrgb ((mng_handle)pData, iIntent))
|
|
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
/* load color-correction routine */
|
|
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
bDone = MNG_TRUE;
|
|
}
|
|
|
|
#ifndef MNG_SKIPCHUNK_cHRM
|
|
if ( (pData->fProcesschroma) &&
|
|
(((pBuf) && (pBuf->bHasCHRM)) || ((bGlobal) && (pData->bHasglobalCHRM))) )
|
|
{
|
|
mng_uint32 iWhitepointx, iWhitepointy;
|
|
mng_uint32 iPrimaryredx, iPrimaryredy;
|
|
mng_uint32 iPrimarygreenx, iPrimarygreeny;
|
|
mng_uint32 iPrimarybluex, iPrimarybluey;
|
|
|
|
if ((pBuf) && (pBuf->bHasCHRM)) /* local cHRM ? */
|
|
{
|
|
iWhitepointx = pBuf->iWhitepointx;
|
|
iWhitepointy = pBuf->iWhitepointy;
|
|
iPrimaryredx = pBuf->iPrimaryredx;
|
|
iPrimaryredy = pBuf->iPrimaryredy;
|
|
iPrimarygreenx = pBuf->iPrimarygreenx;
|
|
iPrimarygreeny = pBuf->iPrimarygreeny;
|
|
iPrimarybluex = pBuf->iPrimarybluex;
|
|
iPrimarybluey = pBuf->iPrimarybluey;
|
|
}
|
|
else
|
|
{
|
|
iWhitepointx = pData->iGlobalWhitepointx;
|
|
iWhitepointy = pData->iGlobalWhitepointy;
|
|
iPrimaryredx = pData->iGlobalPrimaryredx;
|
|
iPrimaryredy = pData->iGlobalPrimaryredy;
|
|
iPrimarygreenx = pData->iGlobalPrimarygreenx;
|
|
iPrimarygreeny = pData->iGlobalPrimarygreeny;
|
|
iPrimarybluex = pData->iGlobalPrimarybluex;
|
|
iPrimarybluey = pData->iGlobalPrimarybluey;
|
|
}
|
|
/* inform the app */
|
|
if (!pData->fProcesschroma ((mng_handle)pData, iWhitepointx, iWhitepointy,
|
|
iPrimaryredx, iPrimaryredy,
|
|
iPrimarygreenx, iPrimarygreeny,
|
|
iPrimarybluex, iPrimarybluey))
|
|
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
/* load color-correction routine */
|
|
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
bDone = MNG_TRUE;
|
|
}
|
|
#endif
|
|
|
|
if ( (pData->fProcessgamma) &&
|
|
(((pBuf) && (pBuf->bHasGAMA)) || ((bGlobal) && (pData->bHasglobalGAMA))) )
|
|
{
|
|
mng_uint32 iGamma;
|
|
|
|
if ((pBuf) && (pBuf->bHasGAMA)) /* get the gamma value */
|
|
iGamma = pBuf->iGamma;
|
|
else
|
|
iGamma = pData->iGlobalGamma;
|
|
/* inform the app */
|
|
if (!pData->fProcessgamma ((mng_handle)pData, iGamma))
|
|
{ /* app wants us to use internal routines ! */
|
|
iRetcode = mng_init_gamma_only (pData, bGlobal, bObject, bRetrobj);
|
|
if (iRetcode) /* on error bail out */
|
|
return iRetcode;
|
|
}
|
|
else
|
|
{ /* load color-correction routine */
|
|
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
}
|
|
|
|
bDone = MNG_TRUE;
|
|
}
|
|
|
|
if (!bDone) /* no color-info at all ? */
|
|
{
|
|
/* then use default image gamma ! */
|
|
if (!pData->fProcessgamma ((mng_handle)pData,
|
|
(mng_uint32)((pData->dDfltimggamma * 100000) + 0.5)))
|
|
{ /* app wants us to use internal routines ! */
|
|
iRetcode = mng_init_gamma_only (pData, bGlobal, bObject, bRetrobj);
|
|
if (iRetcode) /* on error bail out */
|
|
return iRetcode;
|
|
}
|
|
else
|
|
{ /* load color-correction routine */
|
|
pData->fCorrectrow = (mng_fptr)mng_correct_app_cms;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_INIT_APP_CMS, MNG_LC_END);
|
|
#endif
|
|
|
|
return MNG_NOERROR;
|
|
}
|
|
#endif /* MNG_APP_CMS */
|
|
|
|
/* ************************************************************************** */
|
|
|
|
#ifdef MNG_APP_CMS
|
|
mng_retcode mng_correct_app_cms (mng_datap pData)
|
|
{
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_CORRECT_APP_CMS, MNG_LC_START);
|
|
#endif
|
|
|
|
if (pData->fProcessarow) /* let the app do something with our row */
|
|
if (!pData->fProcessarow ((mng_handle)pData, pData->iRowsamples,
|
|
pData->bIsRGBA16, pData->pRGBArow))
|
|
MNG_ERROR (pData, MNG_APPCMSERROR);
|
|
|
|
#ifdef MNG_SUPPORT_TRACE
|
|
MNG_TRACE (pData, MNG_FN_CORRECT_APP_CMS, MNG_LC_END);
|
|
#endif
|
|
|
|
return MNG_NOERROR;
|
|
}
|
|
#endif /* MNG_APP_CMS */
|
|
|
|
/* ************************************************************************** */
|
|
|
|
#endif /* MNG_INCLUDE_DISPLAY_PROCS */
|
|
|
|
/* ************************************************************************** */
|
|
/* * end of file * */
|
|
/* ************************************************************************** */
|
|
|
|
|
|
|