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FreeType on OpenGL ES (iPhone)

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24 Nov 2010CPOL4 min read 86.8K   3K   27  
Faster, smarter and better looking fonts rendered with OpenGL ES
/***************************************************************************/
/*                                                                         */
/*  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.                                        */
/*                                                                         */
/***************************************************************************/


#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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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer Astronautz
Spain Spain
After working in the software industry for many years, I've started my own games company that specialises in strategy games for mobile platforms.

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