| /* |
| * Test program, which can detect problems with nearest neighbout scaling |
| * implementation. Also SRC and OVER opetations tested for 16bpp and 32bpp |
| * images. |
| * |
| * Just run it without any command line arguments, and it will report either |
| * "scaling test passed" - everything is ok |
| * "scaling test failed!" - there is some problem |
| * |
| * In the case of failure, finding the problem involves the following steps: |
| * 1. Get the reference 'scaling-test' binary. It makes sense to disable all |
| * the cpu specific optimizations in pixman and also configure it with |
| * '--disable-shared' option. Those who are paranoid can also tweak the |
| * sources to disable all fastpath functions. The resulting binary |
| * can be renamed to something like 'scaling-test.ref'. |
| * 2. Compile the buggy binary (also with the '--disable-shared' option). |
| * 3. Run 'ruby scaling-test-bisect.rb ./scaling-test.ref ./scaling-test' |
| * 4. Look at the information about failed case (destination buffer content |
| * will be shown) and try to figure out what is wrong. It is possible |
| * to use debugging print to stderr in pixman to get more information, |
| * this does not interfere with the testing script. |
| */ |
| #include <assert.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include "pixman.h" |
| |
| /* A primitive pseudorandom number generator, taken from POSIX.1-2001 example */ |
| |
| static uint32_t lcg_seed; |
| |
| uint32_t lcg_rand(void) |
| { |
| lcg_seed = lcg_seed * 1103515245 + 12345; |
| return ((uint32_t)(lcg_seed / 65536) % 32768); |
| } |
| |
| void lcg_srand(uint32_t seed) |
| { |
| lcg_seed = seed; |
| } |
| |
| uint32_t lcg_rand_n(int max) |
| { |
| return lcg_rand() % max; |
| } |
| |
| /*----------------------------------------------------------------------------*\ |
| * CRC-32 version 2.0.0 by Craig Bruce, 2006-04-29. |
| * |
| * This program generates the CRC-32 values for the files named in the |
| * command-line arguments. These are the same CRC-32 values used by GZIP, |
| * PKZIP, and ZMODEM. The Crc32_ComputeBuf() can also be detached and |
| * used independently. |
| * |
| * THIS PROGRAM IS PUBLIC-DOMAIN SOFTWARE. |
| * |
| * Based on the byte-oriented implementation "File Verification Using CRC" |
| * by Mark R. Nelson in Dr. Dobb's Journal, May 1992, pp. 64-67. |
| * |
| * v1.0.0: original release. |
| * v1.0.1: fixed printf formats. |
| * v1.0.2: fixed something else. |
| * v1.0.3: replaced CRC constant table by generator function. |
| * v1.0.4: reformatted code, made ANSI C. 1994-12-05. |
| * v2.0.0: rewrote to use memory buffer & static table, 2006-04-29. |
| \*----------------------------------------------------------------------------*/ |
| |
| /*----------------------------------------------------------------------------*\ |
| * NAME: |
| * Crc32_ComputeBuf() - computes the CRC-32 value of a memory buffer |
| * DESCRIPTION: |
| * Computes or accumulates the CRC-32 value for a memory buffer. |
| * The 'inCrc32' gives a previously accumulated CRC-32 value to allow |
| * a CRC to be generated for multiple sequential buffer-fuls of data. |
| * The 'inCrc32' for the first buffer must be zero. |
| * ARGUMENTS: |
| * inCrc32 - accumulated CRC-32 value, must be 0 on first call |
| * buf - buffer to compute CRC-32 value for |
| * bufLen - number of bytes in buffer |
| * RETURNS: |
| * crc32 - computed CRC-32 value |
| * ERRORS: |
| * (no errors are possible) |
| \*----------------------------------------------------------------------------*/ |
| |
| static uint32_t Crc32_ComputeBuf( uint32_t inCrc32, const void *buf, |
| size_t bufLen ) |
| { |
| static const uint32_t crcTable[256] = { |
| 0x00000000,0x77073096,0xEE0E612C,0x990951BA,0x076DC419,0x706AF48F,0xE963A535, |
| 0x9E6495A3,0x0EDB8832,0x79DCB8A4,0xE0D5E91E,0x97D2D988,0x09B64C2B,0x7EB17CBD, |
| 0xE7B82D07,0x90BF1D91,0x1DB71064,0x6AB020F2,0xF3B97148,0x84BE41DE,0x1ADAD47D, |
| 0x6DDDE4EB,0xF4D4B551,0x83D385C7,0x136C9856,0x646BA8C0,0xFD62F97A,0x8A65C9EC, |
| 0x14015C4F,0x63066CD9,0xFA0F3D63,0x8D080DF5,0x3B6E20C8,0x4C69105E,0xD56041E4, |
| 0xA2677172,0x3C03E4D1,0x4B04D447,0xD20D85FD,0xA50AB56B,0x35B5A8FA,0x42B2986C, |
| 0xDBBBC9D6,0xACBCF940,0x32D86CE3,0x45DF5C75,0xDCD60DCF,0xABD13D59,0x26D930AC, |
| 0x51DE003A,0xC8D75180,0xBFD06116,0x21B4F4B5,0x56B3C423,0xCFBA9599,0xB8BDA50F, |
| 0x2802B89E,0x5F058808,0xC60CD9B2,0xB10BE924,0x2F6F7C87,0x58684C11,0xC1611DAB, |
| 0xB6662D3D,0x76DC4190,0x01DB7106,0x98D220BC,0xEFD5102A,0x71B18589,0x06B6B51F, |
| 0x9FBFE4A5,0xE8B8D433,0x7807C9A2,0x0F00F934,0x9609A88E,0xE10E9818,0x7F6A0DBB, |
| 0x086D3D2D,0x91646C97,0xE6635C01,0x6B6B51F4,0x1C6C6162,0x856530D8,0xF262004E, |
| 0x6C0695ED,0x1B01A57B,0x8208F4C1,0xF50FC457,0x65B0D9C6,0x12B7E950,0x8BBEB8EA, |
| 0xFCB9887C,0x62DD1DDF,0x15DA2D49,0x8CD37CF3,0xFBD44C65,0x4DB26158,0x3AB551CE, |
| 0xA3BC0074,0xD4BB30E2,0x4ADFA541,0x3DD895D7,0xA4D1C46D,0xD3D6F4FB,0x4369E96A, |
| 0x346ED9FC,0xAD678846,0xDA60B8D0,0x44042D73,0x33031DE5,0xAA0A4C5F,0xDD0D7CC9, |
| 0x5005713C,0x270241AA,0xBE0B1010,0xC90C2086,0x5768B525,0x206F85B3,0xB966D409, |
| 0xCE61E49F,0x5EDEF90E,0x29D9C998,0xB0D09822,0xC7D7A8B4,0x59B33D17,0x2EB40D81, |
| 0xB7BD5C3B,0xC0BA6CAD,0xEDB88320,0x9ABFB3B6,0x03B6E20C,0x74B1D29A,0xEAD54739, |
| 0x9DD277AF,0x04DB2615,0x73DC1683,0xE3630B12,0x94643B84,0x0D6D6A3E,0x7A6A5AA8, |
| 0xE40ECF0B,0x9309FF9D,0x0A00AE27,0x7D079EB1,0xF00F9344,0x8708A3D2,0x1E01F268, |
| 0x6906C2FE,0xF762575D,0x806567CB,0x196C3671,0x6E6B06E7,0xFED41B76,0x89D32BE0, |
| 0x10DA7A5A,0x67DD4ACC,0xF9B9DF6F,0x8EBEEFF9,0x17B7BE43,0x60B08ED5,0xD6D6A3E8, |
| 0xA1D1937E,0x38D8C2C4,0x4FDFF252,0xD1BB67F1,0xA6BC5767,0x3FB506DD,0x48B2364B, |
| 0xD80D2BDA,0xAF0A1B4C,0x36034AF6,0x41047A60,0xDF60EFC3,0xA867DF55,0x316E8EEF, |
| 0x4669BE79,0xCB61B38C,0xBC66831A,0x256FD2A0,0x5268E236,0xCC0C7795,0xBB0B4703, |
| 0x220216B9,0x5505262F,0xC5BA3BBE,0xB2BD0B28,0x2BB45A92,0x5CB36A04,0xC2D7FFA7, |
| 0xB5D0CF31,0x2CD99E8B,0x5BDEAE1D,0x9B64C2B0,0xEC63F226,0x756AA39C,0x026D930A, |
| 0x9C0906A9,0xEB0E363F,0x72076785,0x05005713,0x95BF4A82,0xE2B87A14,0x7BB12BAE, |
| 0x0CB61B38,0x92D28E9B,0xE5D5BE0D,0x7CDCEFB7,0x0BDBDF21,0x86D3D2D4,0xF1D4E242, |
| 0x68DDB3F8,0x1FDA836E,0x81BE16CD,0xF6B9265B,0x6FB077E1,0x18B74777,0x88085AE6, |
| 0xFF0F6A70,0x66063BCA,0x11010B5C,0x8F659EFF,0xF862AE69,0x616BFFD3,0x166CCF45, |
| 0xA00AE278,0xD70DD2EE,0x4E048354,0x3903B3C2,0xA7672661,0xD06016F7,0x4969474D, |
| 0x3E6E77DB,0xAED16A4A,0xD9D65ADC,0x40DF0B66,0x37D83BF0,0xA9BCAE53,0xDEBB9EC5, |
| 0x47B2CF7F,0x30B5FFE9,0xBDBDF21C,0xCABAC28A,0x53B39330,0x24B4A3A6,0xBAD03605, |
| 0xCDD70693,0x54DE5729,0x23D967BF,0xB3667A2E,0xC4614AB8,0x5D681B02,0x2A6F2B94, |
| 0xB40BBE37,0xC30C8EA1,0x5A05DF1B,0x2D02EF8D }; |
| uint32_t crc32; |
| unsigned char *byteBuf; |
| size_t i; |
| |
| /** accumulate crc32 for buffer **/ |
| crc32 = inCrc32 ^ 0xFFFFFFFF; |
| byteBuf = (unsigned char*) buf; |
| for (i=0; i < bufLen; i++) { |
| crc32 = (crc32 >> 8) ^ crcTable[ (crc32 ^ byteBuf[i]) & 0xFF ]; |
| } |
| return( crc32 ^ 0xFFFFFFFF ); |
| } |
| |
| |
| #define MAX_SRC_WIDTH 10 |
| #define MAX_SRC_HEIGHT 10 |
| #define MAX_DST_WIDTH 10 |
| #define MAX_DST_HEIGHT 10 |
| #define MAX_STRIDE 4 |
| |
| /* |
| * Composite operation with pseudorandom images |
| */ |
| uint32_t test_composite(uint32_t initcrc, int testnum, int verbose) |
| { |
| int i; |
| pixman_image_t *src_img; |
| pixman_image_t *dst_img; |
| pixman_transform_t transform; |
| pixman_region16_t clip; |
| int src_width, src_height; |
| int dst_width, dst_height; |
| int src_stride, dst_stride; |
| int src_x, src_y; |
| int dst_x, dst_y; |
| int src_bpp; |
| int dst_bpp; |
| int w, h; |
| int scale_x = 32768, scale_y = 32768; |
| int op; |
| int repeat = 0; |
| int src_fmt, dst_fmt; |
| uint32_t *srcbuf; |
| uint32_t *dstbuf; |
| uint32_t crc32; |
| |
| lcg_srand(testnum); |
| |
| src_bpp = (lcg_rand_n(2) == 0) ? 2 : 4; |
| dst_bpp = (lcg_rand_n(2) == 0) ? 2 : 4; |
| op = (lcg_rand_n(2) == 0) ? PIXMAN_OP_SRC : PIXMAN_OP_OVER; |
| |
| src_width = lcg_rand_n(MAX_SRC_WIDTH) + 1; |
| src_height = lcg_rand_n(MAX_SRC_HEIGHT) + 1; |
| dst_width = lcg_rand_n(MAX_DST_WIDTH) + 1; |
| dst_height = lcg_rand_n(MAX_DST_HEIGHT) + 1; |
| src_stride = src_width * src_bpp + lcg_rand_n(MAX_STRIDE) * src_bpp; |
| dst_stride = dst_width * dst_bpp + lcg_rand_n(MAX_STRIDE) * dst_bpp; |
| if (src_stride & 3) src_stride += 2; |
| if (dst_stride & 3) dst_stride += 2; |
| |
| src_x = -(src_width / 4) + lcg_rand_n(src_width * 3 / 2); |
| src_y = -(src_height / 4) + lcg_rand_n(src_height * 3 / 2); |
| dst_x = -(dst_width / 4) + lcg_rand_n(dst_width * 3 / 2); |
| dst_y = -(dst_height / 4) + lcg_rand_n(dst_height * 3 / 2); |
| w = lcg_rand_n(dst_width * 3 / 2 - dst_x); |
| h = lcg_rand_n(dst_height * 3 / 2 - dst_y); |
| |
| srcbuf = (uint32_t *)malloc(src_stride * src_height); |
| dstbuf = (uint32_t *)malloc(dst_stride * dst_height); |
| for (i = 0; i < src_stride * src_height; i++) |
| *((uint8_t *)srcbuf + i) = lcg_rand_n(256); |
| for (i = 0; i < dst_stride * dst_height; i++) |
| *((uint8_t *)dstbuf + i) = lcg_rand_n(256); |
| |
| src_fmt = src_bpp == 4 ? (lcg_rand_n(2) == 0 ? |
| PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5; |
| |
| dst_fmt = dst_bpp == 4 ? (lcg_rand_n(2) == 0 ? |
| PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5; |
| |
| src_img = pixman_image_create_bits( |
| src_fmt, src_width, src_height, srcbuf, src_stride); |
| |
| dst_img = pixman_image_create_bits( |
| dst_fmt, dst_width, dst_height, dstbuf, dst_stride); |
| |
| if (lcg_rand_n(8) > 0) { |
| scale_x = 32768 + lcg_rand_n(65536); |
| scale_y = 32768 + lcg_rand_n(65536); |
| pixman_transform_init_scale(&transform, scale_x, scale_y); |
| pixman_image_set_transform(src_img, &transform); |
| } |
| |
| switch (lcg_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; |
| } |
| pixman_image_set_repeat(src_img, repeat); |
| |
| if (verbose) { |
| printf("src_fmt=%08X, dst_fmt=%08X\n", src_fmt, dst_fmt); |
| printf("op=%d, scale_x=%d, scale_y=%d, repeat=%d\n", |
| op, scale_x, scale_y, repeat); |
| printf("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n", |
| src_width, src_height, dst_width, dst_height); |
| printf("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n", |
| src_x, src_y, dst_x, dst_y); |
| printf("w=%d, h=%d\n", w, h); |
| } |
| |
| if (lcg_rand_n(8) == 0) { |
| pixman_box16_t clip_boxes[2]; |
| int n = lcg_rand_n(2) + 1; |
| for (i = 0; i < n; i++) { |
| clip_boxes[i].x1 = lcg_rand_n(src_width); |
| clip_boxes[i].y1 = lcg_rand_n(src_height); |
| clip_boxes[i].x2 = clip_boxes[i].x1 + lcg_rand_n(src_width - clip_boxes[i].x1); |
| clip_boxes[i].y2 = clip_boxes[i].y1 + lcg_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 (lcg_rand_n(8) == 0) { |
| pixman_box16_t clip_boxes[2]; |
| int n = lcg_rand_n(2) + 1; |
| for (i = 0; i < n; i++) { |
| clip_boxes[i].x1 = lcg_rand_n(dst_width); |
| clip_boxes[i].y1 = lcg_rand_n(dst_height); |
| clip_boxes[i].x2 = clip_boxes[i].x1 + lcg_rand_n(dst_width - clip_boxes[i].x1); |
| clip_boxes[i].y2 = clip_boxes[i].y1 + lcg_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); |
| } |
| |
| pixman_image_composite (op, src_img, NULL, dst_img, |
| src_x, src_y, 0, 0, dst_x, dst_y, w, h); |
| |
| if (dst_fmt == PIXMAN_x8r8g8b8) { |
| /* ignore unused part */ |
| for (i = 0; i < dst_stride * dst_height / 4; i++) |
| dstbuf[i] &= 0xFFFFFF; |
| } |
| |
| 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"); |
| } |
| } |
| |
| pixman_image_unref (src_img); |
| pixman_image_unref (dst_img); |
| |
| crc32 = Crc32_ComputeBuf(initcrc, dstbuf, dst_stride * dst_height); |
| free(srcbuf); |
| free(dstbuf); |
| return crc32; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int i, n = 0; |
| uint32_t crc = 0; |
| |
| if (argc >= 2) |
| n = atoi(argv[1]); |
| |
| if (n == 0) n = 3000000; |
| |
| if (n < 0) { |
| crc = test_composite(0, -n, 1); |
| printf("crc32=%08X\n", crc); |
| } |
| else { |
| for (i = 1; i <= n; i++) |
| { |
| crc = test_composite(crc, i, 0); |
| } |
| printf("crc32=%08X\n", crc); |
| #ifdef LITTLE_ENDIAN |
| if (n == 3000000) { |
| /* predefined value for running with all the fastpath functions disabled */ |
| /* it needs to be updated every time changes are introduced to this program! */ |
| if (crc == 0xC950E5BB) { |
| printf("scaling test passed\n"); |
| } else { |
| printf("scaling test failed!\n"); |
| } |
| } |
| #endif |
| } |
| return 0; |
| } |
