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  35. <table align=center><tr><td><font size=-1>[<a href="ft2-index.html">Index</a>]</font></td>
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  37. <td><font size=-1>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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  38. <center><h1>FreeType-2.4.3 API Reference</h1></center>
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  39. 

  40. <center><h1>
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  41. LZW Streams
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  42. </h1></center>
    43. 

  43. <h2>Synopsis</h2>
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  44. <table align=center cellspacing=5 cellpadding=0 border=0>
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  45. <tr><td></td><td><a href="#FT_Stream_OpenLZW">FT_Stream_OpenLZW</a></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
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  46. </table><br><br>
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  49. <p>This section contains the declaration of LZW-specific functions.</p>
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  50. </td></tr></table><br>
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  52. <h4><a name="FT_Stream_OpenLZW">FT_Stream_OpenLZW</a></h4>
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  54. Defined in FT_LZW_H (freetype/ftlzw.h).
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  55. </td></tr></table><br>
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  56. <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
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  58.   FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
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  59.   <b>FT_Stream_OpenLZW</b>( <a href="ft2-system_interface.html#FT_Stream">FT_Stream</a>  stream,
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  60.                      <a href="ft2-system_interface.html#FT_Stream">FT_Stream</a>  source );
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  62. </pre></table><br>
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  63. <table align=center width="87%"><tr><td>
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  64. <p>Open a new stream to parse LZW-compressed font files. This is mainly used to support the compressed &lsquo;*.pcf.Z&rsquo; fonts that come with XFree86.</p>
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  65. </td></tr></table><br>
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  66. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
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  67. <p></p>
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  68. <table cellpadding=3 border=0>
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  69. <tr valign=top><td><b>stream</b></td><td>
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  70. <p>The target embedding stream.</p>
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  71. </td></tr>
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  72. <tr valign=top><td><b>source</b></td><td>
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  73. <p>The source stream.</p>
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  74. </td></tr>
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  75. </table>
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  76. </td></tr></table>
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  77. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
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  78. <p>FreeType error code. 0&nbsp;means success.</p>
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  79. </td></tr></table>
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  80. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
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  81. <p>The source stream must be opened <i>before</i> calling this function.</p>
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  82. <p>Calling the internal function &lsquo;FT_Stream_Close&rsquo; on the new stream will <b>not</b> call &lsquo;FT_Stream_Close&rsquo; on the source stream. None of the stream objects will be released to the heap.</p>
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  83. <p>The stream implementation is very basic and resets the decompression process each time seeking backwards is needed within the stream</p>
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  84. <p>In certain builds of the library, LZW compression recognition is automatically handled when calling <a href="ft2-base_interface.html#FT_New_Face">FT_New_Face</a> or <a href="ft2-base_interface.html#FT_Open_Face">FT_Open_Face</a>. This means that if no font driver is capable of handling the raw compressed file, the library will try to open a LZW stream from it and re-open the face with it.</p>
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  85. <p>This function may return &lsquo;FT_Err_Unimplemented_Feature&rsquo; if your build of FreeType was not compiled with LZW support.</p>
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  86. </td></tr></table>
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  87. </td></tr></table>
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