integration de fimg_colors_mixer_a dans fimgfx

lib/operators.c

@@ -63,12 +63,13 @@ if (FIMG_TYPE_RGB != a->type || FIMG_TYPE_RGB != b->type) {
 
 nbpixels = a->width * a->height;
 
+	/*   are we cache-friendly here ? 
+	 *   we need an accurate benchmarking... */
+
 for (idx=0; idx<nbpixels; idx++) {
 	b->R[idx] += a->R[idx];
 	b->G[idx] += a->G[idx];
 	b->B[idx] += a->B[idx];
-	/*   are we cache-friendly here ? 
-	 *   we need an accurate benchmarking... */
 	}
 
 return 0;
@@ -85,8 +86,8 @@ int		idx, nbpixels;
 fprintf(stderr, ">>> %s ( %p %p %p )\n", __func__, a, b, d);
 #endif
 
-if (FIMG_TYPE_RGB != a->type ||
-	FIMG_TYPE_RGB != b->type ||
+if (	FIMG_TYPE_RGB != a->type  ||
+	FIMG_TYPE_RGB != b->type  ||
 	FIMG_TYPE_RGB != d->type) {
 	fprintf(stderr, "%s : got a bad type fimg\n", __func__);
 	return -8;
@@ -175,13 +176,15 @@ if (FIMG_TYPE_RGB != a->type || FIMG_TYPE_RGB != b->type ||
 	return -8;
 	}
 
-nbiter = a->width * a->height * 3;
+nbiter = a->width * a->height;
 
 for (idx=0; idx<nbiter; idx++) {
-	if (a->R[idx] > b->R[idx])
-			d->R[idx] = a->R[idx];
-	else
-			d->R[idx] = b->R[idx];
+	if (a->R[idx] > b->R[idx])	d->R[idx] = a->R[idx];
+	else				d->R[idx] = b->R[idx];
+	if (a->G[idx] > b->G[idx])	d->G[idx] = a->G[idx];
+	else				d->G[idx] = b->G[idx];
+	if (a->B[idx] > b->B[idx])	d->B[idx] = a->B[idx];
+	else				d->B[idx] = b->B[idx];
 	}
 
 return 0;
@@ -201,13 +204,15 @@ if (FIMG_TYPE_RGB != a->type || FIMG_TYPE_RGB != b->type ||
 	return -8;
 	}
 
-nbiter = a->width * a->height * 3;
+nbiter = a->width * a->height ;
 
 for (idx=0; idx<nbiter; idx++) {
-	if (a->R[idx] < b->R[idx])
-			d->R[idx] = a->R[idx];
-	else
-			d->R[idx] = b->R[idx];
+	if (a->R[idx] < b->R[idx])	d->R[idx] = a->R[idx];
+	else				d->R[idx] = b->R[idx];
+	if (a->G[idx] < b->G[idx])	d->G[idx] = a->G[idx];
+	else				d->G[idx] = b->G[idx];
+	if (a->B[idx] < b->B[idx])	d->B[idx] = a->B[idx];
+	else				d->B[idx] = b->B[idx];
 	}
 
 return 0;

tools/essai.sh

@@ -23,7 +23,13 @@ function essai_drand48
 ./fimgstats -vv $TMPF
 }
 #  -----------------------------------------------------
+function essai_cmixa
+{
+./mkfimg -v -t tpat0 $TMPF 800 600
+./fimgfx -v cmixa $TMPF bar.fimg
+}
+#  -----------------------------------------------------
 
-essai_drand48
+essai_cmixa
 
 #  -----------------------------------------------------

tools/fimgfx.c

@@ -21,7 +21,7 @@ typedef struct {
 	} Fx;
 
 enum fxid { Fx_cos01=5, Fx_cos010, Fx_pow2, Fx_sqrt, Fx_gray0, Fx_halfsz0,
-		Fx_rot90,
+		Fx_rot90, Fx_cmixa,
 		Fx_xper };
 
 Fx fx_list[] = {
@@ -32,6 +32,7 @@ Fx fx_list[] = {
 	{ "gray0",		Fx_gray0,	0,	1 },
 	{ "halfsz0",		Fx_halfsz0,	0,	1 },
 	{ "rot90",		Fx_rot90,	0,	0 },
+	{ "cmixa",		Fx_cmixa,	0,	1 },
 	{ "xper",		Fx_xper,	0,	1 },
 	{ NULL,			0,	0 }
 	};
@@ -156,6 +157,10 @@ switch (action) {
 		
 	case Fx_rot90:
 		foo = fimg_rotate_90(&src, &dest, 0);		break;
+
+	case Fx_cmixa:
+		fimg_copy_data(&src, &dest);
+		foo = fimg_colors_mixer_a(&dest, 2.0);		break;
 		
 	case Fx_halfsz0:
 		fprintf(stderr, "halfsize was not implemented\n");