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-rw-r--r--pixman/test/scaling-test.c618
1 files changed, 368 insertions, 250 deletions
diff --git a/pixman/test/scaling-test.c b/pixman/test/scaling-test.c
index 7b78017a3..dbb9d39b0 100644
--- a/pixman/test/scaling-test.c
+++ b/pixman/test/scaling-test.c
@@ -1,250 +1,368 @@
-/*
- * 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 <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include "utils.h"
-
-#define MAX_SRC_WIDTH 16
-#define MAX_SRC_HEIGHT 16
-#define MAX_DST_WIDTH 16
-#define MAX_DST_HEIGHT 16
-#define MAX_STRIDE 4
-
-/*
- * Composite operation with pseudorandom images
- */
-uint32_t
-test_composite (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;
- pixman_fixed_t scale_x = 65536, scale_y = 65536;
- pixman_fixed_t translate_x = 0, translate_y = 0;
- pixman_op_t op;
- pixman_repeat_t repeat = PIXMAN_REPEAT_NONE;
- pixman_format_code_t src_fmt, dst_fmt;
- uint32_t * srcbuf;
- uint32_t * dstbuf;
- uint32_t crc32;
- FLOAT_REGS_CORRUPTION_DETECTOR_START ();
-
- 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);
-
- image_endian_swap (src_img, src_bpp * 8);
- image_endian_swap (dst_img, dst_bpp * 8);
-
- if (lcg_rand_n (8) > 0)
- {
- scale_x = -32768 * 3 + lcg_rand_N (65536 * 5);
- scale_y = -32768 * 3 + lcg_rand_N (65536 * 5);
- translate_x = lcg_rand_N (65536);
- translate_y = lcg_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);
- }
-
- 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;
-
- default:
- break;
- }
- pixman_image_set_repeat (src_img, repeat);
-
- if (lcg_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 (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 ("translate_x=%d, translate_y=%d\n",
- translate_x, translate_y);
- 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;
- }
-
- image_endian_swap (dst_img, dst_bpp * 8);
-
- 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 = compute_crc32 (0, dstbuf, dst_stride * dst_height);
- free (srcbuf);
- free (dstbuf);
-
- FLOAT_REGS_CORRUPTION_DETECTOR_FINISH ();
- return crc32;
-}
-
-int
-main (int argc, const char *argv[])
-{
- pixman_disable_out_of_bounds_workaround ();
-
- return fuzzer_test_main("scaling", 8000000, 0x7F1AB59F,
- test_composite, argc, argv);
-}
+/*
+ * 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 <assert.h>
+#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
+ */
+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, dst_fmt;
+ uint32_t * srcbuf;
+ uint32_t * dstbuf;
+ uint32_t * maskbuf;
+ uint32_t crc32;
+ FLOAT_REGS_CORRUPTION_DETECTOR_START ();
+
+ lcg_srand (testnum);
+
+ src_bpp = (lcg_rand_n (2) == 0) ? 2 : 4;
+ dst_bpp = (lcg_rand_n (2) == 0) ? 2 : 4;
+ switch (lcg_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 = lcg_rand_n (MAX_SRC_WIDTH) + 1;
+ src_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1;
+
+ if (lcg_rand_n (2))
+ {
+ mask_width = lcg_rand_n (MAX_SRC_WIDTH) + 1;
+ mask_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1;
+ }
+ else
+ {
+ mask_width = mask_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;
+ mask_stride = mask_width * mask_bpp + lcg_rand_n (MAX_STRIDE) * mask_bpp;
+ dst_stride = dst_width * dst_bpp + lcg_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) + lcg_rand_n (src_width * 3 / 2);
+ src_y = -(src_height / 4) + lcg_rand_n (src_height * 3 / 2);
+ mask_x = -(mask_width / 4) + lcg_rand_n (mask_width * 3 / 2);
+ mask_y = -(mask_height / 4) + lcg_rand_n (mask_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);
+ maskbuf = (uint32_t *)malloc (mask_stride * mask_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 < mask_stride * mask_height; i++)
+ *((uint8_t *)maskbuf + 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);
+
+ mask_img = pixman_image_create_bits (
+ PIXMAN_a8, 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, src_bpp * 8);
+ image_endian_swap (dst_img, dst_bpp * 8);
+
+ if (lcg_rand_n (4) > 0)
+ {
+ scale_x = -32768 * 3 + lcg_rand_N (65536 * 5);
+ scale_y = -32768 * 3 + lcg_rand_N (65536 * 5);
+ translate_x = lcg_rand_N (65536);
+ translate_y = lcg_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 (lcg_rand_n (2) > 0)
+ {
+ mask_scale_x = -32768 * 3 + lcg_rand_N (65536 * 5);
+ mask_scale_y = -32768 * 3 + lcg_rand_N (65536 * 5);
+ mask_translate_x = lcg_rand_N (65536);
+ mask_translate_y = lcg_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 (lcg_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 (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;
+
+ default:
+ break;
+ }
+ pixman_image_set_repeat (src_img, repeat);
+
+ if (lcg_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 (lcg_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 (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 ("translate_x=%d, translate_y=%d\n",
+ translate_x, translate_y);
+ 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 (mask_width);
+ clip_boxes[i].y1 = lcg_rand_n (mask_height);
+ clip_boxes[i].x2 =
+ clip_boxes[i].x1 + lcg_rand_n (mask_width - clip_boxes[i].x1);
+ clip_boxes[i].y2 =
+ clip_boxes[i].y1 + lcg_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 (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);
+ }
+
+ if (lcg_rand_n (2) == 0)
+ pixman_image_composite (op, src_img, NULL, dst_img,
+ src_x, src_y, 0, 0, dst_x, dst_y, w, h);
+ else
+ pixman_image_composite (op, src_img, mask_img, dst_img,
+ src_x, src_y, mask_x, mask_y, 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;
+ }
+
+ image_endian_swap (dst_img, dst_bpp * 8);
+
+ 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 (mask_img);
+ pixman_image_unref (dst_img);
+
+ crc32 = compute_crc32 (0, dstbuf, dst_stride * dst_height);
+ free (srcbuf);
+ free (maskbuf);
+ free (dstbuf);
+
+ FLOAT_REGS_CORRUPTION_DETECTOR_FINISH ();
+ return crc32;
+}
+
+int
+main (int argc, const char *argv[])
+{
+ pixman_disable_out_of_bounds_workaround ();
+
+ return fuzzer_test_main("scaling", 8000000, 0x80DF1CB2,
+ test_composite, argc, argv);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 21:39:15 +0000