* Start shipping unit tests. The first one checks that converting an

8-bit per channel picture to float32 then back again does not change
    the image.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2621 92316355-f0b4-4df1-b90c-862c8a59935f

.gitignore

@@ -12,6 +12,7 @@ pipi/pipi.pc
 genethumb/genethumb
 examples/blur
 examples/img2rubik
+test/u8tof32tou8
 stamp-h1
 .auto
 .deps

Makefile.am

@@ -1,6 +1,6 @@
 # $Id$
 
-SUBDIRS = pipi genethumb examples
+SUBDIRS = pipi genethumb examples test
 
 EXTRA_DIST = bootstrap common.h
 AUTOMAKE_OPTIONS = dist-bzip2

configure.ac

@@ -109,6 +109,7 @@ AC_CONFIG_FILES([
   pipi/Makefile
   genethumb/Makefile
   examples/Makefile
+  test/Makefile
 ])
 AC_CONFIG_FILES([
   pipi/pipi.pc

test/Makefile.am

@@ -0,0 +1,11 @@
+
+AM_CPPFLAGS = -I$(top_srcdir) -I$(top_srcdir)/pipi
+
+noinst_PROGRAMS = u8tof32tou8
+
+TESTS = $(noinst_PROGRAMS)
+
+u8tof32tou8_LDADD = ../pipi/libpipi.la
+
+EXTRA_DIST = mona.png
+

test/u8tof32tou8.c

@@ -0,0 +1,65 @@
+/*
+ *  libpipi       Proper image processing implementation library
+ *  Copyright (c) 2004-2008 Sam Hocevar <sam@zoy.org>
+ *                All Rights Reserved
+ *
+ *  $Id$
+ *
+ *  This library is free software. It comes without any warranty, to
+ *  the extent permitted by applicable law. You can redistribute it
+ *  and/or modify it under the terms of the Do What The Fuck You Want
+ *  To Public License, Version 2, as published by Sam Hocevar. See
+ *  http://sam.zoy.org/wtfpl/COPYING for more details.
+ */
+
+/*
+ * loadsave.c: unit test to check that converting an image to float values
+ * and back to 8-bit integers does not change it.
+ */
+
+#include "config.h"
+#include "common.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <pipi.h>
+
+int main(int argc, char *argv[])
+{
+    pipi_image_t *img1, *img2;
+    pipi_pixels_t *pix1, *pix2;
+    uint32_t *data1, *data2;
+    int x, y, ret = EXIT_SUCCESS;
+
+    img1 = pipi_load("mona.png");
+    img2 = pipi_load("mona.png");
+
+    pix1 = pipi_getpixels(img1, PIPI_PIXELS_RGBA32);
+    data1 = (uint32_t *)pix1->pixels;
+
+    pipi_getpixels(img2, PIPI_PIXELS_RGBA_F);
+    pix2 = pipi_getpixels(img2, PIPI_PIXELS_RGBA32);
+    data2 = (uint32_t *)pix2->pixels;
+
+    for(y = 0; y < pix1->h; y++)
+    {
+        for(x = 0; x < pix1->w; x++)
+        {
+            uint32_t a = data1[y * pix1->w + x];
+            uint32_t b = data2[y * pix2->w + x];
+
+            if(a != b)
+            {
+                printf("loadsave: %08x != %08x at (%i,%i)\n", a, b, x, y);
+                ret = EXIT_FAILURE;
+            }
+        }
+    }
+
+    pipi_free(img1);
+    pipi_free(img2);
+
+    return ret;
+}
+