From 6ce9f49c55491bd57f32f8a891dd5346ba1274b9 Mon Sep 17 00:00:00 2001
From: tth <tth@konrad.lan>
Date: Tue, 28 Jun 2022 12:25:31 +0200
Subject: [PATCH] imported contrast module

---
 Lib/Makefile         |   2 +
 Lib/contrast.c       |   2 +-
 Tools/tga_equalize.c | 124 +++++++++++++++++++++++++++++++++++++++++++
 tthimage.h           |   2 +-
 4 files changed, 128 insertions(+), 2 deletions(-)
 create mode 100644 Tools/tga_equalize.c

diff --git a/Lib/Makefile b/Lib/Makefile
index 5b08691..852ed49 100644
--- a/Lib/Makefile
+++ b/Lib/Makefile
@@ -38,6 +38,7 @@ combine3.o:	combine3.c	$(DEPS)
 combine4.o:	combine4.c	$(DEPS)
 combine5.o:	combine5.c	$(DEPS)
 combine6.o:	combine6.c	$(DEPS)
+contrast.o:	contrast.c	$(DEPS)
 
 detect.o:	detect.c	$(DEPS)
 distances.o:	distances.c	$(DEPS)
@@ -130,6 +131,7 @@ OBJECTS =	7seg.o							\
 		calculs.o classif.o 					\
 		col4bits.o colors.o colors2.o col_reduc.o col_xyz.o	\
 		combine.o combine2.o combine3.o combine4.o combine5.o 	\
+		contrast.o						\
 		detect.o distances.o					\
 		dither.o dither2.o dither3.o dither4.o			\
 		doublesz.o drawalpha.o drawing.o drawpatt.o		\
diff --git a/Lib/contrast.c b/Lib/contrast.c
index cef3f2b..41dff67 100644
--- a/Lib/contrast.c
+++ b/Lib/contrast.c
@@ -4,7 +4,7 @@
 
 #include  <stdio.h>
 #include  <math.h>
-#include  "tthimage.h"
+#include  "../tthimage.h"
 
 /*::------------------------------------------------------------------::*/
 /*
diff --git a/Tools/tga_equalize.c b/Tools/tga_equalize.c
new file mode 100644
index 0000000..0dbe77b
--- /dev/null
+++ b/Tools/tga_equalize.c
@@ -0,0 +1,124 @@
+/*
+	----------------------------------------------
+	    utilitaire pour egalizer (uh?) une image
+	----------------------------------------------
+	     http://la.buvette.org/devel/libimage/
+	----------------------------------------------
+*/
+
+#include  <stdio.h>
+#include  <stdlib.h>
+
+#include  "tga_outils.h"
+
+/*::------------------------------------------------------------------::*/
+#define		EQ_STD		4
+#define		EQ_GRAY		8
+#define		EQ_2X2		12
+#define		EQ_LUMIN	14
+#define		EQ_SQUARE	16
+#define		EQ_SQROOT	17
+#define		EQ_GAMMA	20
+mot_clef mots_clef[] =
+{
+{ "std",	EQ_STD,		"", 	"standard method"	},
+{ "rgb",	EQ_STD,		"", 	"same as 'std'"		},
+{ "gray",	EQ_GRAY,	"",	"gray based"		},
+{ "2x2",	EQ_2X2,		"",	"2x2 matrix"		},
+{ "lumin",	EQ_LUMIN,	"i",	"param : ident is 256"	},
+{ "gamma",	EQ_GAMMA,	"d",	"not implemented"	},
+{ "square",	EQ_SQUARE,	"",	"pix**2"		},
+{ "sqroot",	EQ_SQROOT,	"",	"sqr(pix)"		},
+{ NULL,		0,		NULL,	NULL			}
+};
+
+/*::------------------------------------------------------------------::*/
+void usage()
+{
+fprintf(stderr, "* tga_equalize v 0.0.20 [%s]  (dwtfywl) tonton Th\n",
+					TGA_OUTILS_VERSION);
+fprintf(stderr, "  compiled %s at %s\n", __DATE__, __TIME__);
+fprintf(stderr, "usage:\n\ttga_equalize avant.tga mode apres.tga [params]\n");
+liste_mots_clefs(mots_clef, 42);
+exit(5);
+}
+/*::------------------------------------------------------------------::*/
+int main (int argc, char *argv[])
+{
+Image_Desc	*src, *dst;
+int		foo;
+int		commande, nbargs, idx;
+
+dump_command_line(argc, argv, 0);
+if (argc < 4)		usage();
+
+idx = cherche_mot_clef(argv[2], mots_clef, &commande, &nbargs);
+if (idx < 0)
+	{
+	fprintf(stderr, "tga_equalize: mot-clef %s inconnu...\n", argv[2]);
+	exit(5);
+	}
+#if DEBUG_LEVEL
+fprintf(stderr, "idx %d commande %d nbargs %d argc %d\n",
+					idx, commande, nbargs, argc);
+#endif
+
+foo = parse_parametres(argc, argv, mots_clef[idx].ptypes, 4);
+
+if ( (src=Image_TGA_alloc_load(argv[1])) == NULL )
+	{
+	fprintf(stderr, "tga_equalize: err load %s\n", argv[1]);
+	exit(5);
+	}
+
+if ( (dst=Image_clone(src, 0)) == NULL )
+	{
+	fprintf(stderr, "no mem for image cloning\n");
+	exit(5);
+	}
+
+switch (commande)
+	{
+	case EQ_STD:
+		foo = Image_egalise_RGB(src, dst, 0);
+		break;
+
+	case EQ_GRAY:
+		foo = Image_egalise_mono_0(src, dst, 0);
+		break;
+
+	case EQ_2X2:
+		foo = Image_2x2_contrast(src, dst);
+		break;
+
+	case EQ_LUMIN:
+		foo = Image_luminance(src, dst, GIP(0));
+		break;
+
+	case EQ_SQUARE:
+		foo = Image_pix_square(src, dst, 0);
+		break;
+
+	case EQ_SQROOT:
+		foo = Image_pix_sqroot(src, dst, 0);
+		break;
+
+	case EQ_GAMMA:
+		fprintf(stderr, "no gamma func in %d\n", getpid());
+		foo = FULL_NUCKED;
+		break;
+
+	default:
+		foo=-1;
+		break;
+	}
+
+#if DEBUG_LEVEL
+if (foo)
+	fprintf(stderr, "retour = %d, %s\n", foo, Image_err2str(foo));
+#endif
+
+foo = Image_TGA_save(argv[3], dst, 0);
+return 0;
+}
+/*::------------------------------------------------------------------::*/
diff --git a/tthimage.h b/tthimage.h
index 05d3a2b..a8fa966 100644
--- a/tthimage.h
+++ b/tthimage.h
@@ -4,7 +4,7 @@
 	http:///la.buvette.org/devel/libimage/
 */
 #ifndef IMAGE_VERSION_STRING
-	#define IMAGE_VERSION_STRING "0.4.48"
+	#define IMAGE_VERSION_STRING "0.4.49"
 
 /*::------------------------------------------------------------------::*/
 /*