Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009 VMware, Inc.  All Rights Reserved.
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining a
  6.  * copy of this software and associated documentation files (the
  7.  * "Software"), to deal in the Software without restriction, including
  8.  * without limitation the rights to use, copy, modify, merge, publish,
  9.  * distribute, sub license, and/or sell copies of the Software, and to
  10.  * permit persons to whom the Software is furnished to do so, subject to
  11.  * the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the
  14.  * next paragraph) shall be included in all copies or substantial portions
  15.  * of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20.  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24.  *
  25.  **************************************************************************/
  26.  
  27. #ifndef PATH_UTILS_H
  28. #define PATH_UTILS_H
  29.  
  30. #include "VG/openvg.h"
  31.  
  32. #define SEGMENT_COMMAND(command) /* Extract segment type */     \
  33.     ((command) & 0x1e)
  34. #define SEGMENT_ABS_REL(command) /* Extract absolute/relative bit */ \
  35.     ((command) & 0x1)
  36.  
  37. static INLINE VGint size_for_datatype(VGPathDatatype datatype)
  38. {
  39.    switch(datatype) {
  40.    case VG_PATH_DATATYPE_S_8:
  41.       return 1;
  42.    case VG_PATH_DATATYPE_S_16:
  43.       return 2;
  44.    case VG_PATH_DATATYPE_S_32:
  45.       return 4;
  46.    case VG_PATH_DATATYPE_F:
  47.       return 4;
  48.    default:
  49.       assert(!"unknown datatype");
  50.    }
  51.    return 0;
  52. }
  53.  
  54. static INLINE VGint num_elements_for_segments(const VGubyte *segments,
  55.                                               VGint num_segments)
  56. {
  57.    VGint i;
  58.    VGint count = 0;
  59.  
  60.    for (i = 0; i < num_segments; ++i) {
  61.       VGubyte segment = segments[i];
  62.       VGint command = SEGMENT_COMMAND(segment);
  63.       switch(command) {
  64.       case VG_CLOSE_PATH:
  65.          break;
  66.       case VG_MOVE_TO:
  67.          count += 2;
  68.          break;
  69.       case VG_LINE_TO:
  70.          count += 2;
  71.          break;
  72.       case VG_HLINE_TO:
  73.          count += 1;
  74.          break;
  75.       case VG_VLINE_TO:
  76.          count += 1;
  77.          break;
  78.       case VG_QUAD_TO:
  79.          count += 4;
  80.          break;
  81.       case VG_CUBIC_TO:
  82.          count += 6;
  83.          break;
  84.       case VG_SQUAD_TO:
  85.          count += 2;
  86.          break;
  87.       case VG_SCUBIC_TO:
  88.          count += 4;
  89.          break;
  90.       case VG_SCCWARC_TO:
  91.          count += 5;
  92.          break;
  93.       case VG_SCWARC_TO:
  94.          count += 5;
  95.          break;
  96.       case VG_LCCWARC_TO:
  97.          count += 5;
  98.          break;
  99.       case VG_LCWARC_TO:
  100.          count += 5;
  101.          break;
  102.       default:
  103.          assert(!"Unknown segment!");
  104.       }
  105.    }
  106.    return count;
  107. }
  108.  
  109. #endif
  110.