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  1. /* cairo - a vector graphics library with display and print output
  2.  *
  3.  * Copyright © 2005 Red Hat, Inc.
  4.  *
  5.  * This library is free software; you can redistribute it and/or
  6.  * modify it either under the terms of the GNU Lesser General Public
  7.  * License version 2.1 as published by the Free Software Foundation
  8.  * (the "LGPL") or, at your option, under the terms of the Mozilla
  9.  * Public License Version 1.1 (the "MPL"). If you do not alter this
  10.  * notice, a recipient may use your version of this file under either
  11.  * the MPL or the LGPL.
  12.  *
  13.  * You should have received a copy of the LGPL along with this library
  14.  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  15.  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  16.  * You should have received a copy of the MPL along with this library
  17.  * in the file COPYING-MPL-1.1
  18.  *
  19.  * The contents of this file are subject to the Mozilla Public License
  20.  * Version 1.1 (the "License"); you may not use this file except in
  21.  * compliance with the License. You may obtain a copy of the License at
  22.  * http://www.mozilla.org/MPL/
  23.  *
  24.  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  25.  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  26.  * the specific language governing rights and limitations.
  27.  *
  28.  * The Original Code is the cairo graphics library.
  29.  *
  30.  * The Initial Developer of the Original Code is Red Hat, Inc.
  31.  *
  32.  * Contributor(s):
  33.  *      Carl D. Worth <cworth@cworth.org>
  34.  */
  35.  
  36. #include "cairoint.h"
  37.  
  38. /**
  39.  * cairo_debug_reset_static_data:
  40.  *
  41.  * Resets all static data within cairo to its original state,
  42.  * (ie. identical to the state at the time of program invocation). For
  43.  * example, all caches within cairo will be flushed empty.
  44.  *
  45.  * This function is intended to be useful when using memory-checking
  46.  * tools such as valgrind. When valgrind's memcheck analyzes a
  47.  * cairo-using program without a call to cairo_debug_reset_static_data(),
  48.  * it will report all data reachable via cairo's static objects as
  49.  * "still reachable". Calling cairo_debug_reset_static_data() just prior
  50.  * to program termination will make it easier to get squeaky clean
  51.  * reports from valgrind.
  52.  *
  53.  * WARNING: It is only safe to call this function when there are no
  54.  * active cairo objects remaining, (ie. the appropriate destroy
  55.  * functions have been called as necessary). If there are active cairo
  56.  * objects, this call is likely to cause a crash, (eg. an assertion
  57.  * failure due to a hash table being destroyed when non-empty).
  58.  **/
  59. void
  60. cairo_debug_reset_static_data (void)
  61. {
  62.     CAIRO_MUTEX_INITIALIZE ();
  63.  
  64.     _cairo_scaled_font_map_destroy ();
  65.  
  66.     _cairo_toy_font_face_reset_static_data ();
  67.  
  68. #if CAIRO_HAS_FT_FONT
  69.     _cairo_ft_font_reset_static_data ();
  70. #endif
  71.  
  72.     _cairo_intern_string_reset_static_data ();
  73.  
  74.     _cairo_scaled_font_reset_static_data ();
  75.  
  76.     _cairo_pattern_reset_static_data ();
  77.  
  78.     _cairo_clip_reset_static_data ();
  79.  
  80.     _cairo_image_reset_static_data ();
  81.  
  82. #if CAIRO_HAS_DRM_SURFACE
  83.     _cairo_drm_device_reset_static_data ();
  84. #endif
  85.  
  86.     _cairo_reset_static_data ();
  87.  
  88.     CAIRO_MUTEX_FINALIZE ();
  89. }
  90.  
  91. #if HAVE_VALGRIND
  92. void
  93. _cairo_debug_check_image_surface_is_defined (const cairo_surface_t *surface)
  94. {
  95.     const cairo_image_surface_t *image = (cairo_image_surface_t *) surface;
  96.     const uint8_t *bits;
  97.     int row, width;
  98.  
  99.     if (surface == NULL)
  100.         return;
  101.  
  102.     if (! RUNNING_ON_VALGRIND)
  103.         return;
  104.  
  105.     bits = image->data;
  106.     switch (image->format) {
  107.     case CAIRO_FORMAT_A1:
  108.         width = (image->width + 7)/8;
  109.         break;
  110.     case CAIRO_FORMAT_A8:
  111.         width = image->width;
  112.         break;
  113.     case CAIRO_FORMAT_RGB16_565:
  114.         width = image->width*2;
  115.         break;
  116.     case CAIRO_FORMAT_RGB24:
  117.     case CAIRO_FORMAT_ARGB32:
  118.         width = image->width*4;
  119.         break;
  120.     case CAIRO_FORMAT_INVALID:
  121.     default:
  122.         /* XXX compute width from pixman bpp */
  123.         return;
  124.     }
  125.  
  126.     for (row = 0; row < image->height; row++) {
  127.         VALGRIND_CHECK_MEM_IS_DEFINED (bits, width);
  128.         /* and then silence any future valgrind warnings */
  129.         VALGRIND_MAKE_MEM_DEFINED (bits, width);
  130.         bits += image->stride;
  131.     }
  132. }
  133. #endif
  134.  
  135.  
  136. #if 0
  137. void
  138. _cairo_image_surface_write_to_ppm (cairo_image_surface_t *isurf, const char *fn)
  139. {
  140.     char *fmt;
  141.     if (isurf->format == CAIRO_FORMAT_ARGB32 || isurf->format == CAIRO_FORMAT_RGB24)
  142.         fmt = "P6";
  143.     else if (isurf->format == CAIRO_FORMAT_A8)
  144.         fmt = "P5";
  145.     else
  146.         return;
  147.  
  148.     FILE *fp = fopen(fn, "wb");
  149.     if (!fp)
  150.         return;
  151.  
  152.     fprintf (fp, "%s %d %d 255\n", fmt,isurf->width, isurf->height);
  153.     for (int j = 0; j < isurf->height; j++) {
  154.         unsigned char *row = isurf->data + isurf->stride * j;
  155.         for (int i = 0; i < isurf->width; i++) {
  156.             if (isurf->format == CAIRO_FORMAT_ARGB32 || isurf->format == CAIRO_FORMAT_RGB24) {
  157.                 unsigned char r = *row++;
  158.                 unsigned char g = *row++;
  159.                 unsigned char b = *row++;
  160.                 *row++;
  161.                 putc(r, fp);
  162.                 putc(g, fp);
  163.                 putc(b, fp);
  164.             } else {
  165.                 unsigned char a = *row++;
  166.                 putc(a, fp);
  167.             }
  168.         }
  169.     }
  170.  
  171.     fclose (fp);
  172.  
  173.     fprintf (stderr, "Wrote %s\n", fn);
  174. }
  175. #endif
  176.  
  177. static cairo_status_t
  178. _print_move_to (void *closure,
  179.                 const cairo_point_t *point)
  180. {
  181.     fprintf (closure,
  182.              " %f %f m",
  183.              _cairo_fixed_to_double (point->x),
  184.              _cairo_fixed_to_double (point->y));
  185.  
  186.     return CAIRO_STATUS_SUCCESS;
  187. }
  188.  
  189. static cairo_status_t
  190. _print_line_to (void *closure,
  191.                 const cairo_point_t *point)
  192. {
  193.     fprintf (closure,
  194.              " %f %f l",
  195.              _cairo_fixed_to_double (point->x),
  196.              _cairo_fixed_to_double (point->y));
  197.  
  198.     return CAIRO_STATUS_SUCCESS;
  199. }
  200.  
  201. static cairo_status_t
  202. _print_curve_to (void *closure,
  203.                  const cairo_point_t *p1,
  204.                  const cairo_point_t *p2,
  205.                  const cairo_point_t *p3)
  206. {
  207.     fprintf (closure,
  208.              " %f %f %f %f %f %f c",
  209.              _cairo_fixed_to_double (p1->x),
  210.              _cairo_fixed_to_double (p1->y),
  211.              _cairo_fixed_to_double (p2->x),
  212.              _cairo_fixed_to_double (p2->y),
  213.              _cairo_fixed_to_double (p3->x),
  214.              _cairo_fixed_to_double (p3->y));
  215.  
  216.     return CAIRO_STATUS_SUCCESS;
  217. }
  218.  
  219. static cairo_status_t
  220. _print_close (void *closure)
  221. {
  222.     fprintf (closure, " h");
  223.  
  224.     return CAIRO_STATUS_SUCCESS;
  225. }
  226.  
  227. void
  228. _cairo_debug_print_path (FILE *stream, cairo_path_fixed_t *path)
  229. {
  230.     cairo_status_t status;
  231.  
  232.     printf ("path: extents=(%f, %f), (%f, %f)\n",
  233.             _cairo_fixed_to_double (path->extents.p1.x),
  234.             _cairo_fixed_to_double (path->extents.p1.y),
  235.             _cairo_fixed_to_double (path->extents.p2.x),
  236.             _cairo_fixed_to_double (path->extents.p2.y));
  237.  
  238.     status = _cairo_path_fixed_interpret (path,
  239.                                           CAIRO_DIRECTION_FORWARD,
  240.                                           _print_move_to,
  241.                                           _print_line_to,
  242.                                           _print_curve_to,
  243.                                           _print_close,
  244.                                           stream);
  245.     assert (status == CAIRO_STATUS_SUCCESS);
  246.  
  247.     printf ("\n");
  248. }
  249.