1) renommer quelques fonctions dans lib/operators.c

2) ajouter une fonction d'additin d'images (maybe ?) plus rapide
3) reparation d'un bug dans tools/fimgops.c

lib/operators.c

@@ -16,10 +16,10 @@ extern int verbosity;		/* must be declared around main() */
 
 /* ---------------------------------------------------------------- */
 /*
- * 	A + B -> D
+ * 		A + B -> D
  * 				why is this func so slow ?
  */
-int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d)
+int fimg_add_3(FloatImg *a, FloatImg *b, FloatImg *d)
 {
 int		idx, nbpixels;
 
@@ -40,13 +40,40 @@ for (idx=0; idx<nbpixels; idx++) {
 	d->B[idx] = a->B[idx] + b->B[idx];
 	}
 
+return 0;
+}
+/* ---------------------------------------------------------------- */
+/*
+ * 		B += A		may be faster than fimg_add_3 ?
+ */
+int fimg_add_2(FloatImg *a, FloatImg *b)
+{
+int		idx, nbpixels;
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p %p )\n", __func__, a, b);
+#endif
+
+if (3 != a->type || 3 != b->type) {
+	fprintf(stderr, "%s : got a bad type fimg\n", __func__);
+	return -8;
+	}
+
+nbpixels = a->width * a->height;
+
+for (idx=0; idx<nbpixels; idx++) {
+	b->R[idx] += a->R[idx];
+	b->G[idx] += a->G[idx];
+	b->B[idx] += a->B[idx];
+	}
+
 return 0;
 }
 /* ---------------------------------------------------------------- */
 /*
  *		A - B -> D
  */
-int fimg_sub(FloatImg *a, FloatImg *b, FloatImg *d)
+int fimg_sub_3(FloatImg *a, FloatImg *b, FloatImg *d)
 {
 int		idx, nbpixels;
 
@@ -57,7 +84,7 @@ fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, a, b, d);
 if (3 != a->type || 3 != b->type || 3 != d->type) {
 	fprintf(stderr, "%s : got a bad type fimg\n", __func__);
 	return -8;
-	} 
+	}
 
 nbpixels = a->width * a->height;
 
@@ -76,7 +103,7 @@ return 0;
 /*
  *		A * B -> D
  */
-int fimg_mul(FloatImg *a, FloatImg *b, FloatImg *d)
+int fimg_mul_3(FloatImg *a, FloatImg *b, FloatImg *d)
 {
 int		idx, nbpixels;