Edit
IABSD.fr/xenocara/lib/pixman/test/scaling-crash-test.c
matthieu
- lib/pixman/test/scaling-crash-test.c
-
#include <assert.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include "utils.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_color_t color_cc = { 0xcccc, 0xcccc, 0xcccc, 0xcccc }; pixman_image_t * solid; 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); solid = pixman_image_create_solid_fill (&color_cc); pixman_image_composite32 (PIXMAN_OP_SRC, solid, NULL, src_img, 0, 0, 0, 0, 0, 0, src_width, src_height); pixman_image_unref (solid); 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) { int i, j; for (i = 0; i < ARRAY_LENGTH (filters); ++i) { for (j = 0; j < ARRAY_LENGTH (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; }