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#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "pixman.h"
/*
* We have a source image filled with solid color, set NORMAL or PAD repeat,
* and some transform which results in nearest neighbour scaling.
*
* The expected result is either that the destination image filled with this solid
* color or, if the transformation is such that we can't composite anything at
* all, that nothing has changed in the destination.
*
* The surrounding memory of the source image is a different solid color so that
* we are sure to get failures if we access it.
*/
static int
run_test (int32_t dst_width,
int32_t dst_height,
int32_t src_width,
int32_t src_height,
int32_t src_x,
int32_t src_y,
int32_t scale_x,
int32_t scale_y,
pixman_filter_t filter,
pixman_repeat_t repeat)
{
pixman_image_t * src_img;
pixman_image_t * dst_img;
pixman_transform_t transform;
uint32_t * srcbuf;
uint32_t * dstbuf;
pixman_box32_t box = { 0, 0, src_width, src_height };
pixman_color_t color_cc = { 0xcccc, 0xcccc, 0xcccc, 0xcccc };
int result;
int i;
static const pixman_fixed_t kernel[] =
{
#define D(f) (pixman_double_to_fixed (f) + 0x0001)
pixman_int_to_fixed (5),
pixman_int_to_fixed (5),
D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0)
};
result = 0;
srcbuf = (uint32_t *)malloc ((src_width + 10) * (src_height + 10) * 4);
dstbuf = (uint32_t *)malloc (dst_width * dst_height * 4);
memset (srcbuf, 0x88, src_width * src_height * 4);
memset (dstbuf, 0x33, dst_width * dst_height * 4);
src_img = pixman_image_create_bits (
PIXMAN_a8r8g8b8, src_width, src_height,
srcbuf + (src_width + 10) * 5 + 5, (src_width + 10) * 4);
pixman_image_fill_boxes (PIXMAN_OP_SRC, src_img, &color_cc, 1, &box);
dst_img = pixman_image_create_bits (
PIXMAN_a8r8g8b8, dst_width, dst_height, dstbuf, dst_width * 4);
pixman_transform_init_scale (&transform, scale_x, scale_y);
pixman_image_set_transform (src_img, &transform);
pixman_image_set_repeat (src_img, repeat);
if (filter == PIXMAN_FILTER_CONVOLUTION)
pixman_image_set_filter (src_img, filter, kernel, 27);
else
pixman_image_set_filter (src_img, filter, NULL, 0);
pixman_image_composite (PIXMAN_OP_SRC, src_img, NULL, dst_img,
src_x, src_y, 0, 0, 0, 0, dst_width, dst_height);
pixman_image_unref (src_img);
pixman_image_unref (dst_img);
for (i = 0; i < dst_width * dst_height; i++)
{
if (dstbuf[i] != 0xCCCCCCCC && dstbuf[i] != 0x33333333)
{
result = 1;
break;
}
}
free (srcbuf);
free (dstbuf);
return result;
}
typedef struct filter_info_t filter_info_t;
struct filter_info_t
{
pixman_filter_t value;
char name[28];
};
static const filter_info_t filters[] =
{
{ PIXMAN_FILTER_NEAREST, "NEAREST" },
{ PIXMAN_FILTER_BILINEAR, "BILINEAR" },
{ PIXMAN_FILTER_CONVOLUTION, "CONVOLUTION" },
};
typedef struct repeat_info_t repeat_info_t;
struct repeat_info_t
{
pixman_repeat_t value;
char name[28];
};
static const repeat_info_t repeats[] =
{
{ PIXMAN_REPEAT_PAD, "PAD" },
{ PIXMAN_REPEAT_REFLECT, "REFLECT" },
{ PIXMAN_REPEAT_NORMAL, "NORMAL" }
};
static int
do_test (int32_t dst_size,
int32_t src_size,
int32_t src_offs,
int32_t scale_factor)
{
#define N_ELEMENTS(a) (sizeof (a) / sizeof ((a)[0]))
int i, j;
for (i = 0; i < N_ELEMENTS(filters); ++i)
{
for (j = 0; j < N_ELEMENTS (repeats); ++j)
{
/* horizontal test */
if (run_test (dst_size, 1,
src_size, 1,
src_offs, 0,
scale_factor, 65536,
filters[i].value,
repeats[j].value) != 0)
{
printf ("Vertical test failed with %s filter and repeat mode %s\n",
filters[i].name, repeats[j].name);
return 1;
}
/* vertical test */
if (run_test (1, dst_size,
1, src_size,
0, src_offs,
65536, scale_factor,
filters[i].value,
repeats[j].value) != 0)
{
printf ("Vertical test failed with %s filter and repeat mode %s\n",
filters[i].name, repeats[j].name);
return 1;
}
}
}
return 0;
}
int
main (int argc, char *argv[])
{
int i;
pixman_disable_out_of_bounds_workaround ();
/* can potentially crash */
assert (do_test (
48000, 32767, 1, 65536 * 128) == 0);
/* can potentially get into a deadloop */
assert (do_test (
16384, 65536, 32, 32768) == 0);
/* can potentially access memory outside source image buffer */
assert (do_test (
10, 10, 0, 1) == 0);
assert (do_test (
10, 10, 0, 0) == 0);
for (i = 0; i < 100; ++i)
{
pixman_fixed_t one_seventh =
(((pixman_fixed_48_16_t)pixman_fixed_1) << 16) / (7 << 16);
assert (do_test (
1, 7, 3, one_seventh + i - 50) == 0);
}
for (i = 0; i < 100; ++i)
{
pixman_fixed_t scale =
(((pixman_fixed_48_16_t)pixman_fixed_1) << 16) / (32767 << 16);
assert (do_test (
1, 32767, 16383, scale + i - 50) == 0);
}
/* can potentially provide invalid results (out of range matrix stuff) */
assert (do_test (
48000, 32767, 16384, 65536 * 128) == 0);
return 0;
}
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