0,0 → 1,99 |
/***************************************************************************/ |
/* */ |
/* ftlzw.h */ |
/* */ |
/* LZW-compressed stream support. */ |
/* */ |
/* Copyright 2004, 2006 by */ |
/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
/* */ |
/* This file is part of the FreeType project, and may only be used, */ |
/* modified, and distributed under the terms of the FreeType project */ |
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
/* this file you indicate that you have read the license and */ |
/* understand and accept it fully. */ |
/* */ |
/***************************************************************************/ |
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#ifndef __FTLZW_H__ |
#define __FTLZW_H__ |
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#include <ft2build.h> |
#include FT_FREETYPE_H |
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#ifdef FREETYPE_H |
#error "freetype.h of FreeType 1 has been loaded!" |
#error "Please fix the directory search order for header files" |
#error "so that freetype.h of FreeType 2 is found first." |
#endif |
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FT_BEGIN_HEADER |
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/*************************************************************************/ |
/* */ |
/* <Section> */ |
/* lzw */ |
/* */ |
/* <Title> */ |
/* LZW Streams */ |
/* */ |
/* <Abstract> */ |
/* Using LZW-compressed font files. */ |
/* */ |
/* <Description> */ |
/* This section contains the declaration of LZW-specific functions. */ |
/* */ |
/*************************************************************************/ |
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/************************************************************************ |
* |
* @function: |
* FT_Stream_OpenLZW |
* |
* @description: |
* 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. |
* |
* @input: |
* stream :: The target embedding stream. |
* |
* source :: The source stream. |
* |
* @return: |
* FreeType error code. 0~means success. |
* |
* @note: |
* The source stream must be opened _before_ calling this function. |
* |
* Calling the internal function `FT_Stream_Close' on the new stream will |
* *not* call `FT_Stream_Close' on the source stream. None of the stream |
* objects will be released to the heap. |
* |
* The stream implementation is very basic and resets the decompression |
* process each time seeking backwards is needed within the stream |
* |
* In certain builds of the library, LZW compression recognition is |
* automatically handled when calling @FT_New_Face or @FT_Open_Face. |
* 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. |
* |
* This function may return `FT_Err_Unimplemented_Feature' if your build |
* of FreeType was not compiled with LZW support. |
*/ |
FT_EXPORT( FT_Error ) |
FT_Stream_OpenLZW( FT_Stream stream, |
FT_Stream source ); |
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/* */ |
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FT_END_HEADER |
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#endif /* __FTLZW_H__ */ |
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/* END */ |