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il__bmp_8h-source.html

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  3. <title>DevIL: /home/dwoods/DevIL/src-IL/include/il_bmp.h Source File</title>
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  16. <h1>/home/dwoods/DevIL/src-IL/include/il_bmp.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//-----------------------------------------------------------------------------</span>
    17. 

  17. <a name="l00002"></a>00002 <span class="comment">//</span>
    18. 

  18. <a name="l00003"></a>00003 <span class="comment">// ImageLib Sources</span>
    19. 

  19. <a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2000-2002 by Denton Woods</span>
    20. 

  20. <a name="l00005"></a>00005 <span class="comment">// Last modified: 09/01/2003 &lt;--Y2K Compliant! =]</span>
    21. 

  21. <a name="l00006"></a>00006 <span class="comment">//</span>
    22. 

  22. <a name="l00007"></a>00007 <span class="comment">// Filename: src-IL/include/il_bmp.h</span>
    23. 

  23. <a name="l00008"></a>00008 <span class="comment">//</span>
    24. 

  24. <a name="l00009"></a>00009 <span class="comment">// Description: Reads and writes to a bitmap (.bmp) file.</span>
    25. 

  25. <a name="l00010"></a>00010 <span class="comment">//</span>
    26. 

  26. <a name="l00011"></a>00011 <span class="comment">//-----------------------------------------------------------------------------</span>
    27. 

  27. <a name="l00012"></a>00012 
    28. 

  28. <a name="l00013"></a>00013 
    29. 

  29. <a name="l00014"></a>00014 <span class="preprocessor">#ifndef BMP_H</span>
    30. 

  30. <a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#define BMP_H</span>
    31. 

  31. <a name="l00016"></a>00016 <span class="preprocessor"></span>
    32. 

  32. <a name="l00017"></a>00017 <span class="preprocessor">#include "il_internal.h"</span>
    33. 

  33. <a name="l00018"></a>00018 
    34. 

  34. <a name="l00019"></a>00019 <span class="preprocessor">#ifdef _WIN32</span>
    35. 

  35. <a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">        #pragma pack(push, bmp_struct, 1)</span>
    36. 

  36. <a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    37. 

  37. <a name="l00022"></a>00022 <span class="preprocessor"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>BMPHEAD {
    38. 

  38. <a name="l00023"></a>00023         ILushort        bfType;
    39. 

  39. <a name="l00024"></a>00024         ILint           bfSize;
    40. 

  40. <a name="l00025"></a>00025         ILuint          bfReserved;
    41. 

  41. <a name="l00026"></a>00026         ILint           bfDataOff;
    42. 

  42. <a name="l00027"></a>00027         ILint           biSize;
    43. 

  43. <a name="l00028"></a>00028         ILint           biWidth;
    44. 

  44. <a name="l00029"></a>00029         ILint           biHeight;
    45. 

  45. <a name="l00030"></a>00030         ILshort         biPlanes;
    46. 

  46. <a name="l00031"></a>00031         ILshort         biBitCount;
    47. 

  47. <a name="l00032"></a>00032         ILint           biCompression;
    48. 

  48. <a name="l00033"></a>00033         ILint           biSizeImage;
    49. 

  49. <a name="l00034"></a>00034         ILint           biXPelsPerMeter;
    50. 

  50. <a name="l00035"></a>00035         ILint           biYPelsPerMeter;
    51. 

  51. <a name="l00036"></a>00036         ILint           biClrUsed;
    52. 

  52. <a name="l00037"></a>00037         ILint           biClrImportant;
    53. 

  53. <a name="l00038"></a>00038 } IL_PACKSTRUCT BMPHEAD;
    54. 

  54. <a name="l00039"></a>00039 
    55. 

  55. <a name="l00040"></a>00040 <span class="keyword">typedef</span> <span class="keyword">struct </span>OS2_HEAD
    56. 

  56. <a name="l00041"></a>00041 {
    57. 

  57. <a name="l00042"></a>00042         <span class="comment">// Bitmap file header.</span>
    58. 

  58. <a name="l00043"></a>00043         ILushort        bfType;
    59. 

  59. <a name="l00044"></a>00044         ILuint          biSize;
    60. 

  60. <a name="l00045"></a>00045         ILshort         xHotspot;
    61. 

  61. <a name="l00046"></a>00046         ILshort         yHotspot;
    62. 

  62. <a name="l00047"></a>00047         ILuint          DataOff;
    63. 

  63. <a name="l00048"></a>00048 
    64. 

  64. <a name="l00049"></a>00049         <span class="comment">// Bitmap core header.</span>
    65. 

  65. <a name="l00050"></a>00050         ILuint          cbFix;
    66. 

  66. <a name="l00051"></a>00051         <span class="comment">//2003-09-01: changed cx, cy to ushort according to MSDN</span>
    67. 

  67. <a name="l00052"></a>00052         ILushort                cx;
    68. 

  68. <a name="l00053"></a>00053         ILushort                cy;
    69. 

  69. <a name="l00054"></a>00054         ILushort        cPlanes;
    70. 

  70. <a name="l00055"></a>00055         ILushort        cBitCount;
    71. 

  71. <a name="l00056"></a>00056 } IL_PACKSTRUCT OS2_HEAD;
    72. 

  72. <a name="l00057"></a>00057 <span class="preprocessor">#ifdef _WIN32</span>
    73. 

  73. <a name="l00058"></a>00058 <span class="preprocessor"></span><span class="preprocessor">        #pragma pack(pop, bmp_struct)</span>
    74. 

  74. <a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    75. 

  75. <a name="l00060"></a>00060 <span class="preprocessor"></span>
    76. 

  76. <a name="l00061"></a>00061 <span class="comment">// Internal functions</span>
    77. 

  77. <a name="l00062"></a>00062 ILboolean       iGetBmpHead(BMPHEAD * <span class="keyword">const</span> Header);
    78. 

  78. <a name="l00063"></a>00063 ILboolean       iGetOS2Head(OS2_HEAD * <span class="keyword">const</span> Header);
    79. 

  79. <a name="l00064"></a>00064 ILboolean       iIsValidBmp();
    80. 

  80. <a name="l00065"></a>00065 ILboolean       iCheckBmp(<span class="keyword">const</span> BMPHEAD *CONST_RESTRICT Header);
    81. 

  81. <a name="l00066"></a>00066 ILboolean       iCheckOS2(<span class="keyword">const</span> OS2_HEAD *CONST_RESTRICT Header);
    82. 

  82. <a name="l00067"></a>00067 ILboolean       iLoadBitmapInternal();
    83. 

  83. <a name="l00068"></a>00068 ILboolean       iSaveBitmapInternal();
    84. 

  84. <a name="l00069"></a>00069 ILboolean       ilReadUncompBmp(BMPHEAD *Info);
    85. 

  85. <a name="l00070"></a>00070 ILboolean       ilReadRLE8Bmp(BMPHEAD *Info);
    86. 

  86. <a name="l00071"></a>00071 ILboolean       ilReadRLE4Bmp(BMPHEAD *Info);
    87. 

  87. <a name="l00072"></a>00072 ILboolean       iGetOS2Bmp(OS2_HEAD *Header);
    88. 

  88. <a name="l00073"></a>00073 
    89. 

  89. <a name="l00074"></a>00074 <span class="preprocessor">#ifdef IL_BMP_C</span>
    90. 

  90. <a name="l00075"></a>00075 <span class="preprocessor"></span><span class="preprocessor">#undef NOINLINE</span>
    91. 

  91. <a name="l00076"></a>00076 <span class="preprocessor"></span><span class="preprocessor">#undef INLINE</span>
    92. 

  92. <a name="l00077"></a>00077 <span class="preprocessor"></span><span class="preprocessor">#define INLINE</span>
    93. 

  93. <a name="l00078"></a>00078 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    94. 

  94. <a name="l00079"></a>00079 <span class="preprocessor"></span>
    95. 

  95. <a name="l00080"></a>00080 <span class="preprocessor">#ifndef NOINLINE</span>
    96. 

  96. <a name="l00081"></a>00081 <span class="preprocessor"></span>INLINE <span class="keywordtype">void</span> GetShiftFromMask(<span class="keyword">const</span> ILuint Mask, ILuint * CONST_RESTRICT ShiftLeft, ILuint * CONST_RESTRICT ShiftRight) {
    97. 

  97. <a name="l00082"></a>00082         ILuint Temp, i;
    98. 

  98. <a name="l00083"></a>00083 
    99. 

  99. <a name="l00084"></a>00084         <span class="keywordflow">if</span>( Mask == 0 ) {
    100. 

  100. <a name="l00085"></a>00085                 *ShiftLeft = *ShiftRight = 0;
    101. 

  101. <a name="l00086"></a>00086                 <span class="keywordflow">return</span>;
    102. 

  102. <a name="l00087"></a>00087         }
    103. 

  103. <a name="l00088"></a>00088 
    104. 

  104. <a name="l00089"></a>00089         Temp = Mask;
    105. 

  105. <a name="l00090"></a>00090         <span class="keywordflow">for</span>( i = 0; i &lt; 32; i++, Temp &gt;&gt;= 1 ) {
    106. 

  106. <a name="l00091"></a>00091                 <span class="keywordflow">if</span>( Temp &amp; 1 )
    107. 

  107. <a name="l00092"></a>00092                         <span class="keywordflow">break</span>;
    108. 

  108. <a name="l00093"></a>00093         }
    109. 

  109. <a name="l00094"></a>00094         *ShiftRight = i;
    110. 

  110. <a name="l00095"></a>00095 
    111. 

  111. <a name="l00096"></a>00096         <span class="comment">// Temp is preserved, so use it again:</span>
    112. 

  112. <a name="l00097"></a>00097         <span class="keywordflow">for</span>( i = 0; i &lt; 8; i++, Temp &gt;&gt;= 1 ) {
    113. 

  113. <a name="l00098"></a>00098                 <span class="keywordflow">if</span>( !(Temp &amp; 1) )
    114. 

  114. <a name="l00099"></a>00099                         <span class="keywordflow">break</span>;
    115. 

  115. <a name="l00100"></a>00100         }
    116. 

  116. <a name="l00101"></a>00101         *ShiftLeft = 8 - i;
    117. 

  117. <a name="l00102"></a>00102 
    118. 

  118. <a name="l00103"></a>00103         <span class="keywordflow">return</span>;
    119. 

  119. <a name="l00104"></a>00104 }
    120. 

  120. <a name="l00105"></a>00105 <span class="preprocessor">#endif</span>
    121. 

  121. <a name="l00106"></a>00106 <span class="preprocessor"></span>
    122. 

  122. <a name="l00107"></a>00107 <span class="preprocessor">#endif//BMP_H</span>
    123. 

  123. </pre></div></div>
    124. 

  124. <hr size="1"><address style="text-align: right;"><small>Generated on Sun Mar 8 20:01:41 2009 for DevIL by&nbsp;
    125. 

  125. <a href="http://www.doxygen.org/index.html">
    126. 

  126. <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
    127. 

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    128. 

  128. </html>
    129.