/**************************************************************************** * * ftlzw.h * * LZW-compressed stream support. * * Copyright (C) 2004-2020 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 <freetype/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: * 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. * * The stream implementation is very basic and resets the decompression * process each time seeking backwards is needed within the stream, * which significantly undermines the performance. * * 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. * * 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 */ SIMPAN PERUBAHAN