kc3-lang/freetype/include/ftlzw.h

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  Date : 2015-01-17T20:41:43
  

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• include/ftlzw.h

• /***************************************************************************/
  /*                                                                         */
  /*  ftlzw.h                                                                */
  /*                                                                         */
  /*    LZW-compressed stream support.                                       */
  /*                                                                         */
  /*  Copyright 2004-2015 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.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
  #ifndef __FTLZW_H__
  #define __FTLZW_H__
  
  #include <ft2build.h>
  #include FT_FREETYPE_H
  
  #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
  
  
  FT_BEGIN_HEADER
  
    /*************************************************************************/
    /*                                                                       */
    /* <Section>                                                             */
    /*    lzw                                                                */
    /*                                                                       */
    /* <Title>                                                               */
    /*    LZW Streams                                                        */
    /*                                                                       */
    /* <Abstract>                                                            */
    /*    Using LZW-compressed font files.                                   */
    /*                                                                       */
    /* <Description>                                                         */
    /*    This section contains the declaration of LZW-specific functions.   */
    /*                                                                       */
    /*************************************************************************/
  
   /************************************************************************
    *
    * @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 );
  
    /* */
  
  
  FT_END_HEADER
  
  #endif /* __FTLZW_H__ */
  
  
  /* END */
  

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