Commit 6bbbbc1523a3a4f81aac30d7a538875546ca4b9c
2010-07-04T07:37:56
TrueType hinting is no longer patented. * include/freetype/config/ftoption.h, devel/ftoption.h (TT_CONFIG_OPTION_BYTECODE_INTERPRETER): Define. (TT_CONFIG_OPTION_UNPATENTED_HINTING): Undefine. * docs/CHANGES, docs/INSTALL, include/freetype/freetype.h: Updated. * docs/TRUETYPE, docs/PATENTS: Removed.
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diff --git a/ChangeLog b/ChangeLog
index b570bee..3ec4eae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2010-07-04 Werner Lemberg <wl@gnu.org>
+
+ TrueType hinting is no longer patented.
+
+ * include/freetype/config/ftoption.h, devel/ftoption.h
+ (TT_CONFIG_OPTION_BYTECODE_INTERPRETER): Define.
+ (TT_CONFIG_OPTION_UNPATENTED_HINTING): Undefine.
+
+ * docs/CHANGES, docs/INSTALL, include/freetype/freetype.h: Updated.
+ * docs/TRUETYPE, docs/PATENTS: Removed.
+
2010-07-04 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
Check error value by `FT_CMap_New'.
diff --git a/devel/ftoption.h b/devel/ftoption.h
index 9c6c2fe..058601e 100644
--- a/devel/ftoption.h
+++ b/devel/ftoption.h
@@ -488,8 +488,7 @@ FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */
- /* a bytecode interpreter in the TrueType driver. Note that there are */
- /* important patent issues related to the use of the interpreter. */
+ /* a bytecode interpreter in the TrueType driver. */
/* */
/* By undefining this, you will only compile the code necessary to load */
/* TrueType glyphs without hinting. */
@@ -504,10 +503,13 @@ FT_BEGIN_HEADER
/* */
/* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */
/* of the TrueType bytecode interpreter is used that doesn't implement */
- /* any of the patented opcodes and algorithms. Note that the */
- /* TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* if you define */
- /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, either define */
- /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
+ /* any of the patented opcodes and algorithms. The patents related to */
+ /* TrueType hinting have expired worldwide since May 2010; this option */
+ /* is now deprecated. */
+ /* */
+ /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */
+ /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */
+ /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
/* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */
/* */
/* This macro is only useful for a small number of font files (mostly */
diff --git a/docs/CHANGES b/docs/CHANGES
index 761d92a..593a443 100644
--- a/docs/CHANGES
+++ b/docs/CHANGES
@@ -1,10 +1,20 @@
-CHANGES BETWEEN 2.3.12 and 2.3.13
+CHANGES BETWEEN 2.3.12 and 2.4.0
I. IMPORTANT CHANGES
+ - Since May 2010, all patents regarding the TrueType bytecode
+ interpreter have expired worldwide. Consequently, we now define
+ TT_CONFIG_OPTION_BYTECODE_INTERPRETER by default (and undefine
+ TT_CONFIG_OPTION_UNPATENTED_HINTING).
+
- A new function `FT_Library_SetLcdFilterWeights' is available to
adjust the filter weights set by `FT_Library_SetLcdFilter'.
+ II. MISCELLANEOUS
+
+ - Thanks to many reports from Robert Święcki, FreeType's stability
+ in handling broken or damaged fonts could be much improved.
+
======================================================================
@@ -16,6 +26,7 @@ CHANGES BETWEEN 2.3.11 and 2.3.12
preferred family names: FT_PARAM_TAG_IGNORE_PREFERRED_FAMILY and
FT_PARAM_TAG_IGNORE_PREFERRED_SUBFAMILY.
+
II. MISCELLANEOUS
- Support for incremental font loading (controlled with the
diff --git a/docs/INSTALL b/docs/INSTALL
index de50d0c..50f8051 100644
--- a/docs/INSTALL
+++ b/docs/INSTALL
@@ -7,13 +7,7 @@ overview of the documentation available:
I. Normal installation and upgrades
===================================
- 1. Native TrueType Hinting
-
- Native TrueType hinting is disabled by default[1]. If you really
- need it, read the file `TRUETYPE' for information.
-
-
- 2. Unix Systems (including Mac OS X, Cygwin, and MSys on Windows)
+ 1. Unix Systems (including Mac OS X, Cygwin, and MSys on Windows)
Please read *both* `UPGRADE.UNIX' and `INSTALL.UNIX' to install or
upgrade FreeType 2 on a Unix system. Note that you *need* GNU
@@ -23,22 +17,22 @@ I. Normal installation and upgrades
GNU Make VERSION 3.80 OR NEWER IS NEEDED!
- 3. On VMS with the `mms' build tool
+ 2. On VMS with the `mms' build tool
See `INSTALL.VMS' for installation instructions on this platform.
- 4. Other systems using GNU Make
+ 3. Other systems using GNU Make
On non-Unix platforms, it is possible to build the library using
- GNU Make utility. Note that *NO OTHER MAKE TOOL WILL WORK*[2]!
+ GNU Make utility. Note that *NO OTHER MAKE TOOL WILL WORK*[1]!
This methods supports several compilers on Windows, OS/2, and
BeOS, including MinGW, Visual C++, Borland C++, and more.
Instructions are provided in the file `INSTALL.GNU'.
- 5. With an IDE Project File (e.g., for Visual Studio or CodeWarrior)
+ 4. With an IDE Project File (e.g., for Visual Studio or CodeWarrior)
We provide a small number of `project files' for various IDEs to
automatically build the library as well. Note that these files
@@ -49,7 +43,7 @@ I. Normal installation and upgrades
directory, where <system> stands for your OS or environment.
- 6. From you own IDE, or own Makefiles
+ 5. From you own IDE, or own Makefiles
If you want to create your own project file, follow the
instructions given in the `INSTALL.ANY' document of this
@@ -66,9 +60,7 @@ II. Custom builds of the library
----------------------------------------------------------------------
-[1] More details on: http://www.freetype.org/patents.html
-
-[2] make++, a make tool written in Perl, has sufficient support of GNU
+[1] make++, a make tool written in Perl, has sufficient support of GNU
make extensions to build FreeType. See
http://makepp.sourceforge.net
@@ -78,8 +70,8 @@ II. Custom builds of the library
----------------------------------------------------------------------
-Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by
-David Turner, Robert Wilhelm, and Werner Lemberg.
+Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010
+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
diff --git a/docs/PATENTS b/docs/PATENTS
deleted file mode 100644
index f36778b..0000000
--- a/docs/PATENTS
+++ /dev/null
@@ -1,27 +0,0 @@
-
- FreeType Patents Disclaimer
- August 1999
-
-
-
-WE HAVE DISCOVERED THAT APPLE OWNS SEVERAL PATENTS RELATED TO THE
-RENDERING OF TRUETYPE FONTS. THIS COULD MEAN THAT THE FREE USE OF
-FREETYPE MIGHT BE ILLEGAL IN THE USA, JAPAN, AND POSSIBLY OTHER
-COUNTRIES, BE IT IN PROPRIETARY OR FREE SOFTWARE PRODUCTS.
-
-FOR MORE DETAILS, WE STRONGLY ADVISE YOU TO GO TO THE FREETYPE
-PATENTS PAGE AT THE FOLLOWING WEB ADDRESS:
-
- http://www.freetype.org/patents.html
-
-WE WILL NOT PLACE INFORMATION IN THIS FILE AS THE SITUATION IS STILL
-UNDETERMINED FOR NOW. AT THE TIME THESE LINES ARE WRITTEN, WE HAVE
-CONTACTED APPLE'S LEGAL DEPARTMENT AND ARE STILL WAITING FOR THEIR
-ANSWER ON THE SUBJECT.
-
-PLEASE READ THE `INSTALL' FILE TO SEE HOW TO DISABLE THE ENGINE'S
-BYTECODE INTERPRETER IN ORDER TO BUILD A PATENT-FREE ENGINE, AT THE
-COST OF RENDERING QUALITY.
-
-
---- end of PATENTS ---
diff --git a/docs/TRUETYPE b/docs/TRUETYPE
deleted file mode 100644
index 3e1614a..0000000
--- a/docs/TRUETYPE
+++ /dev/null
@@ -1,40 +0,0 @@
-How to enable the TrueType native hinter if you need it
--------------------------------------------------------
-
- The TrueType bytecode interpreter is disabled in all public releases
- of the FreeType packages for patents reasons; see
-
- http://www.freetype.org/patents.html
-
- for more details.
-
- However, many Linux distributions do enable the interpreter in the
- FreeType packages (DEB/RPM/etc.) they produce for their platforms. If
- you are using TrueType fonts on your system, you most probably want to
- enable it manually by doing the following:
-
- - open the file `include/freetype/config/ftoption.h'
-
- - locate a line that says:
-
- /* #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
-
- - change it to:
-
- #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
-
- These steps must be done _before_ compiling the library.
-
-------------------------------------------------------------------------
-
-Copyright 2003, 2005, 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.
-
-
---- end of TRUETYPE ---
diff --git a/include/freetype/config/ftoption.h b/include/freetype/config/ftoption.h
index 2047436..2db0c12 100644
--- a/include/freetype/config/ftoption.h
+++ b/include/freetype/config/ftoption.h
@@ -488,8 +488,7 @@ FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */
- /* a bytecode interpreter in the TrueType driver. Note that there are */
- /* important patent issues related to the use of the interpreter. */
+ /* a bytecode interpreter in the TrueType driver. */
/* */
/* By undefining this, you will only compile the code necessary to load */
/* TrueType glyphs without hinting. */
@@ -497,17 +496,20 @@ FT_BEGIN_HEADER
/* Do not #undef this macro here, since the build system might */
/* define it for certain configurations only. */
/* */
-/* #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
+#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
/*************************************************************************/
/* */
/* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */
/* of the TrueType bytecode interpreter is used that doesn't implement */
- /* any of the patented opcodes and algorithms. Note that the */
- /* TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* if you define */
- /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, either define */
- /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
+ /* any of the patented opcodes and algorithms. The patents related to */
+ /* TrueType hinting have expired worldwide since May 2010; this option */
+ /* is now deprecated. */
+ /* */
+ /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */
+ /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */
+ /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
/* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */
/* */
/* This macro is only useful for a small number of font files (mostly */
@@ -544,7 +546,7 @@ FT_BEGIN_HEADER
/* ... */
/* } */
/* */
-#define TT_CONFIG_OPTION_UNPATENTED_HINTING
+/* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
/*************************************************************************/
diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index 7ca9a9c..ab0deb1 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -3834,6 +3834,9 @@ FT_BEGIN_HEADER
/* 1~if this is a TrueType font that uses one of the patented */
/* opcodes, 0~otherwise. */
/* */
+ /* <Note> */
+ /* Since May 2010, TrueType hinting is no longer patented. */
+ /* */
/* <Since> */
/* 2.3.5 */
/* */
@@ -3861,6 +3864,9 @@ FT_BEGIN_HEADER
/* an SFNT font, or if the unpatented hinter is not compiled in this */
/* instance of the library. */
/* */
+ /* <Note> */
+ /* Since May 2010, TrueType hinting is no longer patented. */
+ /* */
/* <Since> */
/* 2.3.5 */
/* */
diff --git a/include/freetype/ftmodapi.h b/include/freetype/ftmodapi.h
index 5c1f258..17868b2 100644
--- a/include/freetype/ftmodapi.h
+++ b/include/freetype/ftmodapi.h
@@ -397,8 +397,8 @@ FT_BEGIN_HEADER
*
* FT_TRUETYPE_ENGINE_TYPE_PATENTED ::
* The library implements a bytecode interpreter that covers
- * the full instruction set of the TrueType virtual machine.
- * See the file `docs/PATENTS' for legal aspects.
+ * the full instruction set of the TrueType virtual machine (this
+ * was governed by patents until May 2010, hence the name).
*
* @since:
* 2.2