commit du soir, espoir

floatimg.h

@@ -2,7 +2,7 @@
  *	floatimg.h
  */
 
-#define		FIMG_VERSION	71
+#define		FIMG_VERSION	72
 
 /*
  *	in memory descriptor
@@ -47,6 +47,8 @@ int   fimg_clear(FloatImg *fimg);
 int   fimg_add_rgb(FloatImg *head, int x, int y, float r, float g, float b);
 
 
+int fimg_images_compatible(FloatImg *a, FloatImg *b);
+
 int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef);
 
 /*	'operats' module 		*/
@@ -69,11 +71,12 @@ int   fimg_fileinfos(char *fname, int *datas);
 int   fimg_dump_to_file(FloatImg *head, char *fname, int notused);
 int   fimg_create_from_dump(char *fname, FloatImg *head);
 
-/*	mathematics oprations */
+/*	mathematics operations */
 float fimg_get_maxvalue(FloatImg *head);
 int   fimg_meanvalues(FloatImg *head, float means[4]);
 int   fimg_to_gray(FloatImg *head);
 void  fimg_add_cste(FloatImg *fi, float value);
+void  fimg_mul_cste(FloatImg *fi, float value);
 void  fimg_drand48(FloatImg *fi, float kmul);
 
 /*	various funcs modules		*/

lib/Makefile

@@ -2,10 +2,10 @@
 #	building the base library
 #
 
-COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=0
+COPT = -Wall -fpic -g -pg -no-pie -DDEBUG_LEVEL=0
 OBJS = fimg-core.o fimg-pnm.o fimg-file.o fimg-math.o	\
 	fimg-timers.o operators.o fimg-2gray.o		\
-	interpolate.o
+	interpolate.o fimg-compare.o
 
 DEPS = Makefile ../floatimg.h
 
@@ -25,6 +25,9 @@ t:	t.c ../libfloatimg.a $(DEPS)
 fimg-core.o:	fimg-core.c $(DEPS)
 	gcc $(COPT) -c $<
 
+fimg-compare.o:	fimg-compare.c $(DEPS)
+	gcc $(COPT) -c $<
+
 fimg-2gray.o:	fimg-2gray.c $(DEPS)
 	gcc $(COPT) -c $<
 

lib/fimg-compare.c

@@ -0,0 +1,40 @@
+/*
+ *		fimg-core.c
+ *
+ *
+ */
+
+#include  <stdio.h>
+#include  <stdlib.h>
+#include  <unistd.h>
+#include  "string.h"
+
+#include  "../floatimg.h"
+
+extern int verbosity;		/* must be declared around main() */
+
+/* ---------------------------------------------------------------- */
+int fimg_images_compatible(FloatImg *a, FloatImg *b)
+{
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p %p )\n", __func__, a, b);
+#endif
+
+if (a->type != b->type) {
+	if (verbosity) fprintf(stderr, "%p %p != type\n", a, b);
+	return -10;
+	}
+
+if (a->width != b->width) {
+	if (verbosity) fprintf(stderr, "%p %p != width\n", a, b);
+	return -11;
+	}
+
+if (a->height != b->height) {
+	if (verbosity) fprintf(stderr, "%p %p != height\n", a, b);
+	return -12;
+	}
+
+return 0;
+}
+/* ---------------------------------------------------------------- */

lib/fimg-math.c

@@ -103,11 +103,30 @@ nbre = fi->width * fi->height * fi->type;
 #if DEBUG_LEVEL
 fprintf(stderr, "%s, nbre is %d\n", __func__, nbre);
 #endif
-for (idx=0; idx<nbre; nbre++) {
+for (idx=0; idx<nbre; idx++) {
 	fi->R[idx] += value;
 	}
 }
 /* ---------------------------------------------------------------- */
+void  fimg_mul_cste(FloatImg *fi, float value)
+{
+int		nbre, idx;
+
+if (fi->type != FIMG_TYPE_RGB) {
+	fprintf(stderr, "%s : type %d invalide\n",
+				__func__, fi->type);
+	return;
+	}
+
+nbre = fi->width * fi->height * fi->type;
+// #if DEBUG_LEVEL
+fprintf(stderr, "%s, nbre is %d\n", __func__, nbre);
+// #endif
+for (idx=0; idx<nbre; idx++) {
+	fi->R[idx] *= value;
+	}
+}
+/* ---------------------------------------------------------------- */
 /*            Warning: this function is _very_ slow                 */
 void fimg_drand48(FloatImg *fi, float kmul)
 {

lib/interpolate.c

@@ -1,3 +1,6 @@
+/*
+ *			interpolate.c
+ */
 
 #include  <stdio.h>
 #include  <stdlib.h>
@@ -12,37 +15,53 @@ int		verbosity;
 /* ---------------------------------------------------------------- */
 static int gray_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
 {
-return -1;
-}
-/* ---------------------------------------------------------------- */
-
-int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
-{
 int		picsize, idx;
 
-if (FIMG_TYPE_RGB != s1->type) {
+picsize = d->width * d->height;
-        fprintf(stderr, "%s : bad src 1 type %d on %p\n", __func__, 
-                                s1->type, s1);
-        return -8;
-        }
-
-if (FIMG_TYPE_RGB != s2->type) {
-        fprintf(stderr, "%s : bad src 2 type %d on %p\n", __func__, 
-                                s2->type, s2);
-        return -8;
-        }
-if (FIMG_TYPE_RGB != d->type) {
-        fprintf(stderr, "%s : bad dst type %d on %p\n", __func__, 
-                                d->type, d);
-        return -9;
-        }
-
-picsize = d->width * d->height * 3;
 
 for (idx=0; idx<picsize; idx++) {
-
 	d->R[idx] = (coef * s1->R[idx]) + ((1.0-coef) * s2->R[idx]);
-
+	}
+
+return 0;
+}
+/* ---------------------------------------------------------------- */
+static int rgb_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
+{
+int		picsize, idx;
+
+picsize = d->width * d->height * 3;		/* rude hack ? */
+for (idx=0; idx<picsize; idx++) {
+	d->R[idx] = (coef * s1->R[idx]) + ((1.0-coef) * s2->R[idx]);
+	}
+
+return 0;
+}
+/* ---------------------------------------------------------------- */
+int fimg_interpolate(FloatImg *s1, FloatImg *s2, FloatImg *d, float coef)
+{
+int		foo;
+
+foo = fimg_images_compatible(s1, s2);
+if (foo) {
+	fprintf(stderr, "compat -> %d\n", foo);
+	return foo;
+	}
+
+foo = fimg_images_compatible(s1, d);
+if (foo) {
+	fprintf(stderr, "compat -> %d\n", foo);
+	return foo;
+	}
+
+switch (s1->type) {
+	case FIMG_TYPE_GRAY:
+		gray_interpolate(s1, s2, d, coef);	break;
+	case FIMG_TYPE_RGB:
+		rgb_interpolate(s1, s2, d, coef);	break;
+	default:
+		fprintf(stderr, "%s, %d is a bad type\n", __func__, s1->type);
+		return -18;
 	}
 
 return 0;

lib/t.c

@@ -72,56 +72,65 @@ foo = fimg_create(&dessin, W, H, 3);
 petit_dessin(&dessin);
 foo = fimg_create(&noise, W, H, 3);
 fimg_drand48(&noise, 0.1);
-
 ****/
 /* ---------------------------------------------------------------- */
 #define W 320
 #define H 240
 int main(int argc, char *argv[])
 {
-int		foo, idx;
+int		foo, idx, opt;
 float		coef;
 FloatImg 	dessin, noise, result;
 char		outname[100];
+int		gray = 0;
+int		nb_img = 42;
 
-verbosity = 1;
+while ((opt = getopt(argc, argv, "gn:v")) != -1) {
+	switch(opt) {
+		case 'g':	gray++;			break;
+		case 'n':	nb_img=atoi(optarg);	break;
+		case 'v':	verbosity++;		break;
+		}
+	}
+
+if (verbosity) fimg_print_version(0);
 
-fimg_print_version(1);
 
 foo = fimg_create_from_png("/home/tth/TMP/floatimg/s1.png", &dessin);
 if (foo) {
 	fprintf(stderr, "s1 load err %d\n", foo);
 	exit(1);
 	}
-fimg_describe(&dessin, "s1 dessin");
+if (verbosity) fimg_describe(&dessin, "s1 dessin");
-fimg_to_gray(&dessin);
+if (gray) fimg_to_gray(&dessin);
 
 foo = fimg_create_from_png("/home/tth/TMP/floatimg/s2.png", &noise);
 if (foo) {
 	fprintf(stderr, "s2 load err %d\n", foo);
 	exit(1);
 	}
-fimg_describe(&noise, "s2 noise");
+if (verbosity) fimg_describe(&noise, "s2 noise");
+fimg_mul_cste(&noise, 0.50);
+if (gray) fimg_to_gray(&noise);
 
 foo = fimg_create(&result, W, H, 3);
+if (verbosity) fimg_describe(&result, "d result");
 
-#define  NBRE 20
+fprintf(stderr, "running for %d picz\n", nb_img);
-
-for (idx=0; idx<NBRE; idx++) {
-
-	coef = (float)idx / (float)NBRE;
-	coef = (0.5-0.5*cos( 3.141592654*coef));
 
+for (idx=0; idx<nb_img; idx++) {
 
+	coef = (float)idx / (float)nb_img;
+	// coef = (0.5-0.5*cos(4*3.141592654*coef));
 
 	foo = fimg_interpolate(&dessin, &noise, &result, coef);
 	printf("%6d    %9.6f\n", idx, coef);
-	// fimg_to_gray(&result);
+
 	sprintf(outname, "/home/tth/TMP/floatimg/%05d.pnm", idx);
 	foo = fimg_save_as_pnm(&result, outname, 0);
 	}
-// essai_2gray(&result, "gray.pnm");
 
+/* yes, we can cleanup after work */
 fimg_destroy(&dessin), fimg_destroy(&noise), fimg_destroy(&result);
 
 return 0;