[Pixman] [PATCH 2/3] test: Share the image printing code

[Søren Sandmann Pedersen]

The affine-test, blitters-test, and scaling-test all have the ability
to print out the bytes of the destination image. Share this code by
moving it to utils.c.

At the same time make the code work correctly with negative strides.
---
 test/affine-test.c          |   12 +-----------
 test/blitters-test.c        |   19 +------------------
 test/composite-traps-test.c |   12 +-----------
 test/scaling-test.c         |   12 +-----------
 test/utils.c                |   32 ++++++++++++++++++++++++++++++++
 test/utils.h                |    4 ++++
 6 files changed, 40 insertions(+), 51 deletions(-)

diff --git a/test/affine-test.c b/test/affine-test.c
index 3a37d7f..03d296f 100644
--- a/test/affine-test.c
+++ b/test/affine-test.c
@@ -276,17 +276,7 @@ test_composite (int      testnum,
     crc32 = compute_crc32_for_image (0, dst_img);
     
     if (verbose)
-    {
-	int j;
-
-	for (i = 0; i < dst_height; i++)
-	{
-	    for (j = 0; j < dst_stride; j++)
-		printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j));
-
-	    printf ("\n");
-	}
-    }
+	print_image (dst_img);
 
     pixman_image_unref (src_img);
     pixman_image_unref (dst_img);
diff --git a/test/blitters-test.c b/test/blitters-test.c
index a2c6ff4..2120daf 100644
--- a/test/blitters-test.c
+++ b/test/blitters-test.c
@@ -222,7 +222,6 @@ static pixman_format_code_t mask_fmt_list[] = {
 uint32_t
 test_composite (int testnum, int verbose)
 {
-    int i;
     pixman_image_t *src_img = NULL;
     pixman_image_t *dst_img = NULL;
     pixman_image_t *mask_img = NULL;
@@ -355,23 +354,7 @@ test_composite (int testnum, int verbose)
 			    src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h);
 
     if (verbose)
-    {
-	int j;
-
-	printf ("---\n");
-	for (i = 0; i < dst_height; i++)
-	{
-	    for (j = 0; j < dst_stride; j++)
-	    {
-		if (j == (dst_width * PIXMAN_FORMAT_BPP (dst_fmt) + 7) / 8)
-		    printf ("| ");
-
-		printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j));
-	    }
-	    printf ("\n");
-	}
-	printf ("---\n");
-    }
+	print_image (dst_img);
 
     free_random_image (0, src_img, PIXMAN_null);
     crc32 = free_random_image (0, dst_img, dst_fmt);
diff --git a/test/composite-traps-test.c b/test/composite-traps-test.c
index 34ae340..44d5012 100644
--- a/test/composite-traps-test.c
+++ b/test/composite-traps-test.c
@@ -217,17 +217,7 @@ test_composite (int      testnum,
     crc32 = compute_crc32_for_image (0, dst_img);
 
     if (verbose)
-    {
-	int j;
-	
-	for (i = 0; i < dst_height; i++)
-	{
-	    for (j = 0; j < dst_stride; j++)
-		printf ("%02X ", *((uint8_t *)dst_bits + i * dst_stride + j));
-
-	    printf ("\n");
-	}
-    }
+	print_image (dst_img);
 
     fence_free (dst_bits);
     
diff --git a/test/scaling-test.c b/test/scaling-test.c
index 04ecb63..0778d2d 100644
--- a/test/scaling-test.c
+++ b/test/scaling-test.c
@@ -343,17 +343,7 @@ test_composite (int      testnum,
     crc32 = compute_crc32_for_image (0, dst_img);
     
     if (verbose)
-    {
-	int j;
-	
-	for (i = 0; i < dst_height; i++)
-	{
-	    for (j = 0; j < dst_stride; j++)
-		printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j));
-
-	    printf ("\n");
-	}
-    }
+	print_image (dst_img);
 
     pixman_image_unref (src_img);
     pixman_image_unref (mask_img);
diff --git a/test/utils.c b/test/utils.c
index 3d1ba22..a693f30 100644
--- a/test/utils.c
+++ b/test/utils.c
@@ -238,6 +238,38 @@ compute_crc32_for_image (uint32_t        crc32,
     return crc32;
 }
 
+void
+print_image (pixman_image_t *image)
+{
+    int i, j;
+    int width, height, stride;
+    pixman_format_code_t format;
+    uint8_t *buffer;
+
+    width = pixman_image_get_width (image);
+    height = pixman_image_get_height (image);
+    stride = pixman_image_get_stride (image);
+    format = pixman_image_get_format (image);
+    buffer = (uint8_t *)pixman_image_get_data (image);
+
+    if (stride < 0)
+	stride = - stride;
+    
+    printf ("---\n");
+    for (i = 0; i < height; i++)
+    {
+	for (j = 0; j < stride; j++)
+	{
+	    if (j == (width * PIXMAN_FORMAT_BPP (format) + 7) / 8)
+		printf ("| ");
+
+	    printf ("%02X ", *((uint8_t *)buffer + i * stride + j));
+	}
+	printf ("\n");
+    }
+    printf ("---\n");
+}
+
 /* perform endian conversion of pixel data
  */
 void
diff --git a/test/utils.h b/test/utils.h
index c278151..28b7193 100644
--- a/test/utils.h
+++ b/test/utils.h
@@ -63,6 +63,10 @@ uint32_t
 compute_crc32_for_image (uint32_t        in_crc32,
 			 pixman_image_t *image);
 
+/* Print the image in hexadecimal */
+void
+print_image (pixman_image_t *image);
+
 /* Returns TRUE if running on a little endian system
  */
 static force_inline pixman_bool_t
-- 
1.7.1