2004-03-05 11:09:20 +01:00
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/***************************************************************************/
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/* */
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/* ftlzw.h */
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/* */
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/* LZW-compressed stream support. */
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/* */
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/* Copyright 2004 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __FTLZW_H__
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#define __FTLZW_H__
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#ifdef FREETYPE_H
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#error "freetype.h of FreeType 1 has been loaded!"
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#error "Please fix the directory search order for header files"
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#error "so that freetype.h of FreeType 2 is found first."
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#endif
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FT_BEGIN_HEADER
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/*************************************************************************/
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/* */
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/* <Section> */
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/* lzw */
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/* */
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/* <Title> */
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/* LZW Streams */
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/* */
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/* <Abstract> */
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Adding OpenType validation module. The code is based on the
(unfinished) `otlayout' module but has been heavily modified to make
it much more compact.
* src/otvalid/*: New module.
* include/freetype/ftotval.h, src/base/ftotval.c,
include/freetype/internal/services/svotval.h: New files.
* include/freetype/config/ftmodule.h: Add otv_module_class.
* include/freetype/config/ftheader.h (FT_OPENTYPE_VALIDATE_H): New
macro.
* include/freetype/internal/ftserv.h
(FT_SERVICE_OPENTYPE_VALIDATE_H): New macro.
* include/freetype/internal/fttrace.h (otvmodule, otvcommon,
otvbase, otvgdef, otvgpos, otvgsub, otvjstf): New trace components.
* include/freetype/ftchapters.h: Updated.
* src/base/Jamfile (Library), src/base/descrip.mms (OBJS),
src/base/rules.mk (BASE_EXT_SRC): Updated.
* docs/CHANGES: Updated.
2004-09-10 16:39:00 +02:00
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/* Using LZW-compressed font files. */
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2004-03-05 11:09:20 +01:00
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/* */
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/* <Description> */
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/* This section contains the declaration of LZW-specific functions. */
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/* */
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/*************************************************************************/
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/************************************************************************
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*
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* @function:
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* FT_Stream_OpenLZW
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*
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* @description:
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* Open a new stream to parse LZW-compressed font files. This is
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* mainly used to support the compressed *.pcf.Z fonts that come
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* with XFree86.
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*
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* @input:
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* stream :: The target embedding stream.
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*
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* source :: The source stream.
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*
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* @return:
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* FreeType error code. 0 means success.
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*
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* @note:
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* The source stream must be opened _before_ calling this function.
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*
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* Calling the internal function FT_Stream_Close on the new stream will
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* *not* call FT_Stream_Close on the source stream. None of the stream
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* objects will be released to the heap.
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*
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* The stream implementation is very basic and resets the decompression
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* process each time seeking backwards is needed within the stream
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*
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* In certain builds of the library, LZW compression recognition is
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* automatically handled when calling @FT_New_Face or @FT_Open_Face.
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* This means that if no font driver is capable of handling the raw
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* compressed file, the library will try to open a LZW stream from it
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* and re-open the face with it.
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*
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* This function may return "FT_Err_Unimplemented" if your build of
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* FreeType was not compiled with LZW support.
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*/
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FT_EXPORT( FT_Error )
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FT_Stream_OpenLZW( FT_Stream stream,
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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 */
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