| /***************************************************************************/ |
| /* */ |
| /* 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 */ |
