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LZW Streams
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cellspacing=5 cellpadding=0 border=0>
<
p>This section contains the declaration of LZW-specific functions.<
/p>
<
h4><
a name="FT_Stream_OpenLZW">FT_Stream_OpenLZW<
/a><
/h4>
Defined in FT_LZW_H (freetype/ftlzw.h).
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pre>
FT_EXPORT
( <
a href="ft2-basic_types.html#FT_Error">FT_Error<
/a>
)
<
b>FT_Stream_OpenLZW<
/b>
( <
a href="ft2-system_interface.html#FT_Stream">FT_Stream<
/a> stream,
<
a href="ft2-system_interface.html#FT_Stream">FT_Stream<
/a> source
);
<
p>Open a new stream to parse LZW-compressed font files. This is mainly used to support the compressed ‘*.pcf.Z’ fonts that come with XFree86.<
/p>
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table cellpadding=3 border=0>
<
p>The
target embedding stream.<
/p>
<
p>The source stream.<
/p>
<
p>FreeType error
code.
0 means success.<
/p>
<
p>The source stream must be opened <
i>before<
/i> calling this function.<
/p>
<
p>Calling the internal function ‘FT_Stream_Close’ on the new stream will <
b>not<
/b> call ‘FT_Stream_Close’ on the source stream. None of the stream objects will be released to the heap.<
/p>
<
p>The stream implementation is very basic and resets the decompression process each time seeking backwards is needed within the stream<
/p>
<
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>
<
p>This function may return ‘FT_Err_Unimplemented_Feature’ if your build of FreeType was not compiled with LZW support.<
/p>