New upstream version 1.9.1+repackupstream/1.9.1+repack

6 files changed, 178 insertions, 22 deletions

diff --git a/gamut/gammap.c b/gamut/gammap.c
index e276b99..03b9502 100644
--- a/gamut/gammap.c
+++ b/gamut/gammap.c
@@ -23,8 +23,12 @@
  *	There is a general expectation (especially in comparing products)
  *  that the profile colorimetric intent be not strictly minimum delta E,
  *  but that it correct neutral axis, luminence range and keep hue
- *  proportionality. Ideally there should be an intent that matches
+ *  proportionality (i.e. clip with constant Hue and Luminance).
+ *  Ideally there should be an intent that matches
  *  this, that can be selected for the colorimetric table (or perhaps be default).
+ *  !! Maybe even the normal perceptual gamut mapping should use a !!
+ *  !! Hue and Luminance preserving clipping ? Should this be the default !!
+ *  !! for all inverse lookups ?? !!
  *
  *	It might be good to offer the black mapping method as an option (icx_BPmap),
  *  as well as offering different profile (xicc/xlut.c) black point options
@@ -37,7 +41,7 @@
  *  messing up the guide vector mappings. Even if this is fixed, the
  *  actual neutral aim point within nearsmooth is Jab 0,0, while
  *  the mapping in gammap is from the source neutral to the chosen
- *  ??????
+ *  ?????? (is this fixed to some degree ?)
  */
 
 
@@ -519,10 +523,12 @@ static void map_trans(void *cntx, double out[3], double in[3]);
 /* Return NULL on error. */
 gammap *new_gammap(
 	int verb,			/* Verbose flag */
-	gamut *sc_gam,		/* Source colorspace gamut */
+	gamut *sc_gam,		/* Source colorspace gamut (L gamut if sh_gam != NULL) */
 	gamut *isi_gam,		/* Input source image gamut (NULL if none) */
 	gamut *d_gam,		/* Destination colorspace gamut */
 	icxGMappingIntent *gmi,	/* Gamut mapping specification */
+	gamut *sh_gam,		/* If not NULL, then use sc_gam for the luminence */
+						/* mapping, and sh_gam for the hull mapping (i.e. general compression) */
 	int src_kbp,		/* Use K only black point as src gamut black point */
 	int dst_kbp,		/* Use K only black point as dst gamut black point */
 	int dst_cmymap,		/* masks C = 1, M = 2, Y = 4 to force 100% cusp map */
@@ -533,8 +539,8 @@ gammap *new_gammap(
 	char *diagname		/* If non-NULL, write a gamut mapping diagnostic WRL */
 ) {
 	gammap *s;				/* This */
-	gamut *si_gam = NULL;	/* Source image gamut (intersected with sc_gam) */
-	gamut *scl_gam;			/* Source colorspace gamut with rotation and L mapping applied */
+	gamut *si_gam = NULL;	/* Source image gamut (intersected with sc_gam), assm. NULL if sh_gam */
+	gamut *scl_gam = NULL;	/* Source colorspace gamut with rotation and L mapping applied */
 	gamut *sil_gam;			/* Source image gamut with rotation and L mapping applied */
 
 	double s_cs_wp[3];	/* Source colorspace white point */
@@ -1261,18 +1267,28 @@ glumknf	= 1.0;
 		}
 #endif
 
-		if ((scl_gam = parttransgamut(s, sc_gam)) == NULL) {
-			fprintf(stderr,"gamut map: parttransgamut failed\n");
-			if (si_gam != sc_gam)
-				si_gam->del(si_gam);
-			free(s);
-			return NULL;
+		/* If we were provided with a distinct source gamut hull, i.e. because */
+		/* we are doing a general compression/expansion, and sh_gam is an expanded/compressed */
+		/* destination gamut, use it for creating the nearsmth vectors */
+		if (sh_gam != NULL) {
+			scl_gam = sh_gam;
+
+		/* Map the source colorspace gamut through the L mapping */ 
+		} else {
+			if ((scl_gam = parttransgamut(s, sc_gam)) == NULL) {
+				fprintf(stderr,"gamut map: parttransgamut failed\n");
+				if (si_gam != sc_gam)
+					si_gam->del(si_gam);
+				free(s);
+				return NULL;
+			}
 		}
 
 		if (sc_gam == si_gam)
 			sil_gam = scl_gam;
 
 		else {
+			/* Map the source image gamut through the L mapping */ 
 			if ((sil_gam = parttransgamut(s, si_gam)) == NULL) {
 				fprintf(stderr,"gamut map: parttransgamut failed\n");
 				if (si_gam != sc_gam)
@@ -1322,7 +1338,8 @@ typedef struct {
 			s->igrey->del(s->igrey);
 			if (sil_gam != scl_gam)
 				sil_gam->del(sil_gam);
-			scl_gam->del(scl_gam);
+			if (scl_gam != sh_gam)
+				scl_gam->del(scl_gam);
 			if (si_gam != sc_gam)
 				si_gam->del(si_gam);
 			free(s);
@@ -1493,7 +1510,8 @@ typedef struct {
 			s->igrey->del(s->igrey);
 			if (sil_gam != scl_gam)
 				sil_gam->del(sil_gam);
-			scl_gam->del(scl_gam);
+			if (scl_gam != sh_gam)
+				scl_gam->del(scl_gam);
 			if (si_gam != sc_gam)
 				si_gam->del(si_gam);
 			free(s);
@@ -1523,7 +1541,8 @@ typedef struct {
 			s->igrey->del(s->igrey);
 			if (sil_gam != scl_gam)
 				sil_gam->del(sil_gam);
-			scl_gam->del(scl_gam);
+			if (scl_gam != sh_gam)
+				scl_gam->del(scl_gam);
 			if (si_gam != sc_gam)
 				si_gam->del(si_gam);
 			free(s);
@@ -2275,7 +2294,8 @@ typedef struct {
 
 	if (sil_gam != scl_gam)
 		sil_gam->del(sil_gam);
-	scl_gam->del(scl_gam);
+	if (scl_gam != sh_gam)
+		scl_gam->del(scl_gam);
 	if (si_gam != sc_gam)
 		si_gam->del(si_gam);
 
diff --git a/gamut/gammap.h b/gamut/gammap.h
index 69207a4..247ff65 100644
--- a/gamut/gammap.h
+++ b/gamut/gammap.h
@@ -58,6 +58,8 @@ gammap *new_gammap(
 	gamut *s_gam,		/* Source image gamut (NULL if none) */
 	gamut *d_gam,		/* Destination colorspace gamut */
 	icxGMappingIntent *gmi, /* Gamut mapping specification */
+	gamut *sh_gam,		/* If not NULL, then use sc_gam for the luminence */
+						/* mapping, and sh_gam for the hull mapping (i.e. general compression) */
 	int src_kbp,		/* Use K only black point as src gamut black point */
 	int dst_kbp,		/* Use K only black point as dst gamut black point */
 	int dst_cmymap,		/* masks C = 1, M = 2, Y = 4 to force 100% cusp map */
diff --git a/gamut/gamut.c b/gamut/gamut.c
index 3fc1c97..14b45c7 100644
--- a/gamut/gamut.c
+++ b/gamut/gamut.c
@@ -175,6 +175,7 @@ static int compute_vector_isect(gamut *s, double *p1, double *p2, double *min, d
 static int compute_vector_isectns(gamut *s, double *p1, double *p2, gispnt *lp, int ll); 
 static double log_scale(gamut *s, double ss);
 static int intersect(gamut *s, gamut *s1, gamut *s2);
+static int exp_cyl(gamut *s, gamut *s1, double ratio);
 static int nexpintersect(gamut *s, gamut *s1, gamut *s2);
 static int expdstbysrcmdst(gamut *s, gamut *s1, gamut *s2, gamut *s3,
                            void (*cvect)(void *cntx, double *p2, double *p1), void *cntx);
@@ -561,7 +562,8 @@ gamut *new_gamut(
 double sres,			/* Resolution (in rect coord units) of surface triangles */
 						/* 0.0 = default */
 int isJab,				/* Flag indicating Jab space */
-int isRast				/* Flag indicating Raster rather than colorspace */
+int isRast				/* Flag indicating Raster rather than colorspace, */
+						/* so that we only do one pass rather than two of surface fitting. */
 ) {
 	gamut *s;
 
@@ -658,6 +660,7 @@ int isRast				/* Flag indicating Raster rather than colorspace */
 	s->getvert     = getvert;
 	s->volume      = volume;
 	s->intersect   = intersect;
+	s->exp_cyl     = exp_cyl;
 	s->nexpintersect   = nexpintersect;
 	s->expdstbysrcmdst = expdstbysrcmdst;
 	s->radial      = radial;
@@ -1206,6 +1209,128 @@ static int intersect(gamut *s, gamut *sa, gamut *sb) {
 	return 0;
 }
 
+
+/* ------------------------------------ */
+
+/* Initialise this gamut with the source gamut */
+/* expanded cylindrically around the nautral axis by  */
+/* the given ratio. */
+/* (We assume that the this gamut is currently empty) */
+static int exp_cyl(gamut *s, gamut *sa, double ratio) {
+	int i, j, k;
+	double bp[3], wp[3];
+
+	if IS_LIST_EMPTY(sa->tris)
+		triangulate(sa);
+
+	s->sres = sa->sres;
+
+	s->isJab = sa->isJab;
+
+	s->isRast = sa->isRast;
+
+	if (s->isRast) {
+		s->logpow = RAST_LOG_POW;	/* Wrap the surface more closely */
+		s->no2pass = 1;				/* Only do one pass */
+	}
+
+	for (j = 0; j < 3; j++)
+		s->cent[j] = sa->cent[j];
+
+	/* Clear some flags */
+	s->cswbset = 0;
+	s->cswbset = 0;
+	s->dcuspixs = 0;
+
+	/* Copy white & black points */
+	if (sa->cswbset) {
+		for (j = 0; j < 3; j++) {
+			s->cs_wp[j] = sa->cs_wp[j];
+			s->cs_bp[j] = sa->cs_bp[j];
+			s->cs_kp[j] = sa->cs_kp[j];
+		}
+		s->cswbset = sa->cswbset;
+
+		icmCpy3(wp, s->cs_wp);
+		icmCpy3(bp, s->cs_bp);
+
+	} else {
+		wp[0] = 100.0, wp[1] = 0.0, wp[2] = 0.0;
+		bp[0] = 0.0, bp[1] = 0.0, bp[2] = 0.0;
+	}
+
+	/* Don't filter the points (gives a more accurate result) */
+	s->nofilter = 1;
+
+	/* For each vertex */
+	for (i = 0; i < sa->nv; i++) {
+		double pp[3], cp[3];
+		double vv;
+
+		if (!(sa->verts[i]->f & GVERT_TRI))
+			continue;
+
+		icmCpy3(pp, sa->verts[i]->p);		/* Point in question */
+
+		/* Parameter along neutral axis black to white */
+		vv = (pp[0] - bp[0])/(wp[0] - bp[0]);
+
+		/* lv is point at same L on neutral axis */
+		cp[0] = pp[0];
+		cp[1] = vv * (wp[1] - bp[1]) + bp[1];
+		cp[2] = vv * (wp[2] - bp[2]) + bp[2];
+
+		/* Convert to vector from neutral axis point */
+		icmSub3(pp, pp, cp);
+
+		/* Scale a,b */
+		pp[1] *= ratio;
+		pp[2] *= ratio;
+
+		/* Convert back to point */
+		icmAdd3(pp, pp, cp);
+
+		expand_gamut(s, pp);
+	}
+
+	/* Copy and expand cusps */
+	if (sa->cu_inited != 0) {
+		/* For each cusp */
+		for (i = 0; i < 6; i++) {
+			double pp[3], cp[3];
+			double vv;
+	
+			icmCpy3(pp, sa->cusps[i]);
+	
+			/* Parameter along neutral axis black to white */
+			vv = (pp[0] - bp[0])/(wp[0] - bp[0]);
+	
+			/* lv is point at same L on neutral axis */
+			cp[0] = pp[0];
+			cp[1] = vv * (wp[1] - bp[1]) + bp[1];
+			cp[2] = vv * (wp[2] - bp[2]) + bp[2];
+	
+			/* Convert to vector from neutral axis point */
+			icmSub3(pp, pp, cp);
+	
+			/* Scale a,b */
+			pp[1] *= ratio;
+			pp[2] *= ratio;
+	
+			/* Convert back to point */
+			icmAdd3(pp, pp, cp);
+
+			icmCpy3(s->cusps[i], pp);
+		}
+		s->cu_inited = sa->cu_inited;
+	}
+
+	s->nofilter = 0;
+
+	return 0;
+}
+
+
 /* ------------------------------------ */
 
 /* Initialise this gamut with neutral axis points from sa, */
@@ -4534,8 +4659,10 @@ double *gakp
 	}
 //printf("~1 colorspace white %f %f %f, black %f %f %f, kblack %f %f %f\n", s->cs_wp[0], s->cs_wp[1], s->cs_wp[2], s->cs_bp[0], s->cs_bp[1], s->cs_bp[2], s->cs_kp[0],s->cs_kp[1],s->cs_kp[2]);
 	
-	if (gawp != NULL || gabp != NULL) {
+	if (gawp != NULL || gabp != NULL || gakp != NULL) {
 //printf("~1 computing gamut white & black\n");
+		if (s->nv == 0)
+			return 1;
 		compgawb(s);		/* make sure we have gamut white/black available */
 	}
 
diff --git a/gamut/gamut.h b/gamut/gamut.h
index e70d898..e74f942 100644
--- a/gamut/gamut.h
+++ b/gamut/gamut.h
@@ -249,7 +249,7 @@ struct _gamut {
 	double xvra;		/* Extra vertex ratio - set/used by nssverts() */
 	int    ssnverts;	/* total ss verticies - set/used by nssverts() */
 	int	   ssvertn;		/* Number of verts created for current triangle */
-	sobol *ss;			/* Sibol ss generator currently being used */
+	sobol *ss;			/* Sobol ss generator currently being used */
 
 	gtri *nexttri;		/* Context for getnexttri() */
 
@@ -315,14 +315,22 @@ struct _gamut {
 								/* Initialise this gamut with the intersection of the */
 								/* the two given gamuts. */
 
+	int (*exp_cyl)(struct _gamut *s, struct _gamut *s1, double ratio);
+								/* Initialise this gamut with the source gamut */
+								/* expanded cylindrically around the nautral axis by */ 
+								/* the given ratio. */
+
 	int (*nexpintersect)(struct _gamut *s, struct _gamut *s1, struct _gamut *s2);
-								/* Return s1 expanded with neutral axis points */
-								/* and then intersected with s2. */
+								/* Initialise this gamut with neutral axis points from sa, */
+								/* and then intersected with sb. */
 
 	int (*expdstbysrcmdst)(struct _gamut *s,
 	                       struct _gamut *dst, struct _gamut *sc, struct _gamut *dc,
                            void (*cvect)(void *cntx, double *p2, double *p1), void *cntx);
 								/* Expand dst by ((dc - sc) > 0) */
+								/* Initialise this gamut with the image/destination gamut sc */
+								/* expanded by the amount that dest (dc) colorspace is outside */
+								/* the source colorspace gamut. */
 
 	double (*radial)(struct _gamut *s, double out[3], double in[3]);
 								/* return point on surface in same radial direction. */
diff --git a/gamut/maptest.c b/gamut/maptest.c
index 433e719..ae74a1c 100644
--- a/gamut/maptest.c
+++ b/gamut/maptest.c
@@ -33,7 +33,6 @@
 #include "rspl.h"
 #include "gammap.h"
 #include "vrml.h"
-#include "ui.h"
 
 void usage(void) {
 	fprintf(stderr,"Map bteween two gamuts, Version %s\n",ARGYLL_VERSION_STR);
@@ -203,6 +202,7 @@ main(int argc, char *argv[]) {
 		gimg,			/* Image gamut */
 		gout,			/* Destination gamut */
 		&gmi,
+		NULL,			/* No gamut hull gamut */
 		0, 0, 			/* Normal black points */
 		0,				/* Normal CMY cusp mapping */
 		0,				/* No relative weighting override */
diff --git a/gamut/smthtest.c b/gamut/smthtest.c
index b794ed0..71ba1e2 100644
--- a/gamut/smthtest.c
+++ b/gamut/smthtest.c
@@ -36,7 +36,6 @@
 #include "gamut.h"
 #include "nearsmth.h"
 #include "vrml.h"
-#include "ui.h"
 
 double m21po[3] = { 2.0, 1.0, 2.0 };    /* Many to 1 filter mixing power LCh (theoretically 2) */