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IABSD.fr/xenocara/lib/pixman/test/scaling-test.c
matthieu
- lib/pixman/test/scaling-test.c
-
/* * Test program, which can detect some problems with nearest neighbour * and bilinear scaling in pixman. Testing is done by running lots * of random SRC and OVER compositing operations a8r8g8b8, x8a8r8g8b8 * and r5g6b5 color formats. * * Script 'fuzzer-find-diff.pl' can be used to narrow down the problem in * the case of test failure. */ #include <stdlib.h> #include <stdio.h> #include "utils.h" #define MAX_SRC_WIDTH 48 #define MAX_SRC_HEIGHT 8 #define MAX_DST_WIDTH 48 #define MAX_DST_HEIGHT 8 #define MAX_STRIDE 4 /* * Composite operation with pseudorandom images */ static pixman_format_code_t get_format (int bpp) { if (bpp == 4) { switch (prng_rand_n (4)) { default: case 0: return PIXMAN_a8r8g8b8; case 1: return PIXMAN_x8r8g8b8; case 2: return PIXMAN_a8b8g8r8; case 3: return PIXMAN_x8b8g8r8; } } else { return PIXMAN_r5g6b5; } } uint32_t test_composite (int testnum, int verbose) { int i; pixman_image_t * src_img; pixman_image_t * mask_img; pixman_image_t * dst_img; pixman_transform_t transform; pixman_region16_t clip; int src_width, src_height; int mask_width, mask_height; int dst_width, dst_height; int src_stride, mask_stride, dst_stride; int src_x, src_y; int mask_x, mask_y; int dst_x, dst_y; int src_bpp; int mask_bpp = 1; int dst_bpp; int w, h; pixman_fixed_t scale_x = 65536, scale_y = 65536; pixman_fixed_t translate_x = 0, translate_y = 0; pixman_fixed_t mask_scale_x = 65536, mask_scale_y = 65536; pixman_fixed_t mask_translate_x = 0, mask_translate_y = 0; pixman_op_t op; pixman_repeat_t repeat = PIXMAN_REPEAT_NONE; pixman_repeat_t mask_repeat = PIXMAN_REPEAT_NONE; pixman_format_code_t src_fmt, mask_fmt, dst_fmt; uint32_t * srcbuf; uint32_t * dstbuf; uint32_t * maskbuf; uint32_t crc32; FLOAT_REGS_CORRUPTION_DETECTOR_START (); prng_srand (testnum); src_bpp = (prng_rand_n (2) == 0) ? 2 : 4; dst_bpp = (prng_rand_n (2) == 0) ? 2 : 4; switch (prng_rand_n (3)) { case 0: op = PIXMAN_OP_SRC; break; case 1: op = PIXMAN_OP_OVER; break; default: op = PIXMAN_OP_ADD; break; } src_width = prng_rand_n (MAX_SRC_WIDTH) + 1; src_height = prng_rand_n (MAX_SRC_HEIGHT) + 1; if (prng_rand_n (2)) { mask_width = prng_rand_n (MAX_SRC_WIDTH) + 1; mask_height = prng_rand_n (MAX_SRC_HEIGHT) + 1; } else { mask_width = mask_height = 1; } dst_width = prng_rand_n (MAX_DST_WIDTH) + 1; dst_height = prng_rand_n (MAX_DST_HEIGHT) + 1; src_stride = src_width * src_bpp + prng_rand_n (MAX_STRIDE) * src_bpp; mask_stride = mask_width * mask_bpp + prng_rand_n (MAX_STRIDE) * mask_bpp; dst_stride = dst_width * dst_bpp + prng_rand_n (MAX_STRIDE) * dst_bpp; if (src_stride & 3) src_stride += 2; if (mask_stride & 1) mask_stride += 1; if (mask_stride & 2) mask_stride += 2; if (dst_stride & 3) dst_stride += 2; src_x = -(src_width / 4) + prng_rand_n (src_width * 3 / 2); src_y = -(src_height / 4) + prng_rand_n (src_height * 3 / 2); mask_x = -(mask_width / 4) + prng_rand_n (mask_width * 3 / 2); mask_y = -(mask_height / 4) + prng_rand_n (mask_height * 3 / 2); dst_x = -(dst_width / 4) + prng_rand_n (dst_width * 3 / 2); dst_y = -(dst_height / 4) + prng_rand_n (dst_height * 3 / 2); w = prng_rand_n (dst_width * 3 / 2 - dst_x); h = prng_rand_n (dst_height * 3 / 2 - dst_y); srcbuf = (uint32_t *)malloc (src_stride * src_height); maskbuf = (uint32_t *)malloc (mask_stride * mask_height); dstbuf = (uint32_t *)malloc (dst_stride * dst_height); prng_randmemset (srcbuf, src_stride * src_height, 0); prng_randmemset (maskbuf, mask_stride * mask_height, 0); prng_randmemset (dstbuf, dst_stride * dst_height, 0); src_fmt = get_format (src_bpp); mask_fmt = PIXMAN_a8; dst_fmt = get_format (dst_bpp); if (prng_rand_n (2)) { srcbuf += (src_stride / 4) * (src_height - 1); src_stride = - src_stride; } if (prng_rand_n (2)) { maskbuf += (mask_stride / 4) * (mask_height - 1); mask_stride = - mask_stride; } if (prng_rand_n (2)) { dstbuf += (dst_stride / 4) * (dst_height - 1); dst_stride = - dst_stride; } src_img = pixman_image_create_bits ( src_fmt, src_width, src_height, srcbuf, src_stride); mask_img = pixman_image_create_bits ( mask_fmt, mask_width, mask_height, maskbuf, mask_stride); dst_img = pixman_image_create_bits ( dst_fmt, dst_width, dst_height, dstbuf, dst_stride); image_endian_swap (src_img); image_endian_swap (dst_img); if (prng_rand_n (4) > 0) { scale_x = -32768 * 3 + prng_rand_n (65536 * 5); scale_y = -32768 * 3 + prng_rand_n (65536 * 5); translate_x = prng_rand_n (65536); translate_y = prng_rand_n (65536); pixman_transform_init_scale (&transform, scale_x, scale_y); pixman_transform_translate (&transform, NULL, translate_x, translate_y); pixman_image_set_transform (src_img, &transform); } if (prng_rand_n (2) > 0) { mask_scale_x = -32768 * 3 + prng_rand_n (65536 * 5); mask_scale_y = -32768 * 3 + prng_rand_n (65536 * 5); mask_translate_x = prng_rand_n (65536); mask_translate_y = prng_rand_n (65536); pixman_transform_init_scale (&transform, mask_scale_x, mask_scale_y); pixman_transform_translate (&transform, NULL, mask_translate_x, mask_translate_y); pixman_image_set_transform (mask_img, &transform); } switch (prng_rand_n (4)) { case 0: mask_repeat = PIXMAN_REPEAT_NONE; break; case 1: mask_repeat = PIXMAN_REPEAT_NORMAL; break; case 2: mask_repeat = PIXMAN_REPEAT_PAD; break; case 3: mask_repeat = PIXMAN_REPEAT_REFLECT; break; default: break; } pixman_image_set_repeat (mask_img, mask_repeat); switch (prng_rand_n (4)) { case 0: repeat = PIXMAN_REPEAT_NONE; break; case 1: repeat = PIXMAN_REPEAT_NORMAL; break; case 2: repeat = PIXMAN_REPEAT_PAD; break; case 3: repeat = PIXMAN_REPEAT_REFLECT; break; default: break; } pixman_image_set_repeat (src_img, repeat); if (prng_rand_n (2)) pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); else pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); if (prng_rand_n (2)) pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); else pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); if (prng_rand_n (8) == 0) { pixman_box16_t clip_boxes[2]; int n = prng_rand_n (2) + 1; for (i = 0; i < n; i++) { clip_boxes[i].x1 = prng_rand_n (src_width); clip_boxes[i].y1 = prng_rand_n (src_height); clip_boxes[i].x2 = clip_boxes[i].x1 + prng_rand_n (src_width - clip_boxes[i].x1); clip_boxes[i].y2 = clip_boxes[i].y1 + prng_rand_n (src_height - clip_boxes[i].y1); if (verbose) { printf ("source clip box: [%d,%d-%d,%d]\n", clip_boxes[i].x1, clip_boxes[i].y1, clip_boxes[i].x2, clip_boxes[i].y2); } } pixman_region_init_rects (&clip, clip_boxes, n); pixman_image_set_clip_region (src_img, &clip); pixman_image_set_source_clipping (src_img, 1); pixman_region_fini (&clip); } if (prng_rand_n (8) == 0) { pixman_box16_t clip_boxes[2]; int n = prng_rand_n (2) + 1; for (i = 0; i < n; i++) { clip_boxes[i].x1 = prng_rand_n (mask_width); clip_boxes[i].y1 = prng_rand_n (mask_height); clip_boxes[i].x2 = clip_boxes[i].x1 + prng_rand_n (mask_width - clip_boxes[i].x1); clip_boxes[i].y2 = clip_boxes[i].y1 + prng_rand_n (mask_height - clip_boxes[i].y1); if (verbose) { printf ("mask clip box: [%d,%d-%d,%d]\n", clip_boxes[i].x1, clip_boxes[i].y1, clip_boxes[i].x2, clip_boxes[i].y2); } } pixman_region_init_rects (&clip, clip_boxes, n); pixman_image_set_clip_region (mask_img, &clip); pixman_image_set_source_clipping (mask_img, 1); pixman_region_fini (&clip); } if (prng_rand_n (8) == 0) { pixman_box16_t clip_boxes[2]; int n = prng_rand_n (2) + 1; for (i = 0; i < n; i++) { clip_boxes[i].x1 = prng_rand_n (dst_width); clip_boxes[i].y1 = prng_rand_n (dst_height); clip_boxes[i].x2 = clip_boxes[i].x1 + prng_rand_n (dst_width - clip_boxes[i].x1); clip_boxes[i].y2 = clip_boxes[i].y1 + prng_rand_n (dst_height - clip_boxes[i].y1); if (verbose) { printf ("destination clip box: [%d,%d-%d,%d]\n", clip_boxes[i].x1, clip_boxes[i].y1, clip_boxes[i].x2, clip_boxes[i].y2); } } pixman_region_init_rects (&clip, clip_boxes, n); pixman_image_set_clip_region (dst_img, &clip); pixman_region_fini (&clip); } if (prng_rand_n (2) == 0) { mask_fmt = PIXMAN_null; pixman_image_unref (mask_img); mask_img = NULL; mask_x = 0; mask_y = 0; } if (verbose) { printf ("op=%s, src_fmt=%s, mask_fmt=%s, dst_fmt=%s\n", operator_name (op), format_name (src_fmt), format_name (mask_fmt), format_name (dst_fmt)); printf ("scale_x=%d, scale_y=%d, repeat=%d, filter=%d\n", scale_x, scale_y, repeat, src_img->common.filter); printf ("translate_x=%d, translate_y=%d\n", translate_x, translate_y); if (mask_fmt != PIXMAN_null) { printf ("mask_scale_x=%d, mask_scale_y=%d, " "mask_repeat=%d, mask_filter=%d\n", mask_scale_x, mask_scale_y, mask_repeat, mask_img->common.filter); printf ("mask_translate_x=%d, mask_translate_y=%d\n", mask_translate_x, mask_translate_y); } printf ("src_width=%d, src_height=%d, src_x=%d, src_y=%d\n", src_width, src_height, src_x, src_y); if (mask_fmt != PIXMAN_null) { printf ("mask_width=%d, mask_height=%d, mask_x=%d, mask_y=%d\n", mask_width, mask_height, mask_x, mask_y); } printf ("dst_width=%d, dst_height=%d, dst_x=%d, dst_y=%d\n", dst_width, dst_height, dst_x, dst_y); printf ("w=%d, h=%d\n", w, h); } pixman_image_composite (op, src_img, mask_img, dst_img, src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); crc32 = compute_crc32_for_image (0, dst_img); if (verbose) print_image (dst_img); pixman_image_unref (src_img); if (mask_img != NULL) pixman_image_unref (mask_img); pixman_image_unref (dst_img); if (src_stride < 0) srcbuf += (src_stride / 4) * (src_height - 1); if (mask_stride < 0) maskbuf += (mask_stride / 4) * (mask_height - 1); if (dst_stride < 0) dstbuf += (dst_stride / 4) * (dst_height - 1); free (srcbuf); free (maskbuf); free (dstbuf); FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); return crc32; } #if BILINEAR_INTERPOLATION_BITS == 7 #define CHECKSUM 0x92E0F068 #elif BILINEAR_INTERPOLATION_BITS == 4 #define CHECKSUM 0x8EFFA1E5 #else #define CHECKSUM 0x00000000 #endif int main (int argc, const char *argv[]) { pixman_disable_out_of_bounds_workaround (); return fuzzer_test_main("scaling", 8000000, CHECKSUM, test_composite, argc, argv); }