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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 the destination image filled with this solid
* color.
*/
static int
do_test (int32_t dst_size,
int32_t src_size,
int32_t src_offs,
int32_t scale_factor,
pixman_repeat_t repeat)
{
int i;
pixman_image_t * src_img;
pixman_image_t * dst_img;
pixman_transform_t transform;
uint32_t * srcbuf;
uint32_t * dstbuf;
srcbuf = (uint32_t *)malloc (src_size * 4);
dstbuf = (uint32_t *)malloc (dst_size * 4);
/* horizontal test */
memset (srcbuf, 0xCC, src_size * 4);
memset (dstbuf, 0x33, dst_size * 4);
src_img = pixman_image_create_bits (
PIXMAN_a8r8g8b8, src_size, 1, srcbuf, src_size * 4);
dst_img = pixman_image_create_bits (
PIXMAN_a8r8g8b8, dst_size, 1, dstbuf, dst_size * 4);
pixman_transform_init_scale (&transform, scale_factor, 65536);
pixman_image_set_transform (src_img, &transform);
pixman_image_set_repeat (src_img, repeat);
pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0);
pixman_image_composite (PIXMAN_OP_SRC, src_img, NULL, dst_img,
src_offs, 0, 0, 0, 0, 0, dst_size, 1);
pixman_image_unref (src_img);
pixman_image_unref (dst_img);
for (i = 0; i < dst_size; i++)
{
if (dstbuf[i] != 0xCCCCCCCC)
{
free (srcbuf);
free (dstbuf);
return 1;
}
}
/* vertical test */
memset (srcbuf, 0xCC, src_size * 4);
memset (dstbuf, 0x33, dst_size * 4);
src_img = pixman_image_create_bits (
PIXMAN_a8r8g8b8, 1, src_size, srcbuf, 4);
dst_img = pixman_image_create_bits (
PIXMAN_a8r8g8b8, 1, dst_size, dstbuf, 4);
pixman_transform_init_scale (&transform, 65536, scale_factor);
pixman_image_set_transform (src_img, &transform);
pixman_image_set_repeat (src_img, repeat);
pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0);
pixman_image_composite (PIXMAN_OP_SRC, src_img, NULL, dst_img,
0, src_offs, 0, 0, 0, 0, 1, dst_size);
pixman_image_unref (src_img);
pixman_image_unref (dst_img);
for (i = 0; i < dst_size; i++)
{
if (dstbuf[i] != 0xCCCCCCCC)
{
free (srcbuf);
free (dstbuf);
return 1;
}
}
free (srcbuf);
free (dstbuf);
return 0;
}
int
main (int argc, char *argv[])
{
pixman_disable_out_of_bounds_workaround ();
/* can potentially crash */
assert (do_test (
48000, 32767, 1, 65536 * 128, PIXMAN_REPEAT_NORMAL) == 0);
/* can potentially get into a deadloop */
assert (do_test (
16384, 65536, 32, 32768, PIXMAN_REPEAT_NORMAL) == 0);
#if 0
/* can potentially access memory outside source image buffer */
assert (do_test (
10, 10, 0, 1, PIXMAN_REPEAT_PAD) == 0);
assert (do_test (
10, 10, 0, 0, PIXMAN_REPEAT_PAD) == 0);
#endif
#if 0
/* can potentially provide invalid results (out of range matrix stuff) */
assert (do_test (
48000, 32767, 16384, 65536 * 128, PIXMAN_REPEAT_NORMAL) == 0);
#endif
return 0;
}
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