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Examples
ftlzw.h
Go to the documentation of this file.
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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 2004-2018 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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/* Using LZW-compressed font files. */
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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_Feature' if your build
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* of 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 */
FT_EXPORT
#define FT_EXPORT(x)
Definition:
ftconfig.h:461
FT_END_HEADER
#define FT_END_HEADER
Definition:
ftheader.h:54
FT_BEGIN_HEADER
#define FT_BEGIN_HEADER
Definition:
ftheader.h:36
FT_Stream_OpenLZW
FT_BEGIN_HEADER FT_Stream_OpenLZW(FT_Stream stream, FT_Stream source)
Definition:
ftlzw.c:407
FT_Error
int FT_Error
Definition:
fttypes.h:300
FT_StreamRec_
Definition:
ftsystem.h:331
source
Definition:
pdh_main.c:172
stream
Definition:
parse.h:23
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lib
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ftlzw.h
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