rtbuf/rtbuf

diff --git a/AUTHORS b/AUTHORS
index e69de29..0dd8989 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Thomas de Grivel <thoxdg@gmail.com>
+Judy Najnudel <judy.najnudel@gmail.com>
diff --git a/COPYING b/COPYING
deleted file mode 100644
index f84fe9a..0000000
--- a/COPYING
+++ /dev/null
@@ -1,13 +0,0 @@
-Copyright 2020 Thomas de Grivel <thoxdg@gmail.com>
-
-Permission to use, copy, modify, and distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/ChangeLog b/ChangeLog
deleted file mode 100644
index e69de29..0000000
--- a/ChangeLog
+++ /dev/null
diff --git a/INSTALL b/INSTALL
deleted file mode 100644
index 8865734..0000000
--- a/INSTALL
+++ /dev/null
@@ -1,368 +0,0 @@
-Installation Instructions
-*************************
-
-   Copyright (C) 1994-1996, 1999-2002, 2004-2016 Free Software
-Foundation, Inc.
-
-   Copying and distribution of this file, with or without modification,
-are permitted in any medium without royalty provided the copyright
-notice and this notice are preserved.  This file is offered as-is,
-without warranty of any kind.
-
-Basic Installation
-==================
-
-   Briefly, the shell command './configure && make && make install'
-should configure, build, and install this package.  The following
-more-detailed instructions are generic; see the 'README' file for
-instructions specific to this package.  Some packages provide this
-'INSTALL' file but do not implement all of the features documented
-below.  The lack of an optional feature in a given package is not
-necessarily a bug.  More recommendations for GNU packages can be found
-in *note Makefile Conventions: (standards)Makefile Conventions.
-
-   The 'configure' shell script attempts to guess correct values for
-various system-dependent variables used during compilation.  It uses
-those values to create a 'Makefile' in each directory of the package.
-It may also create one or more '.h' files containing system-dependent
-definitions.  Finally, it creates a shell script 'config.status' that
-you can run in the future to recreate the current configuration, and a
-file 'config.log' containing compiler output (useful mainly for
-debugging 'configure').
-
-   It can also use an optional file (typically called 'config.cache' and
-enabled with '--cache-file=config.cache' or simply '-C') that saves the
-results of its tests to speed up reconfiguring.  Caching is disabled by
-default to prevent problems with accidental use of stale cache files.
-
-   If you need to do unusual things to compile the package, please try
-to figure out how 'configure' could check whether to do them, and mail
-diffs or instructions to the address given in the 'README' so they can
-be considered for the next release.  If you are using the cache, and at
-some point 'config.cache' contains results you don't want to keep, you
-may remove or edit it.
-
-   The file 'configure.ac' (or 'configure.in') is used to create
-'configure' by a program called 'autoconf'.  You need 'configure.ac' if
-you want to change it or regenerate 'configure' using a newer version of
-'autoconf'.
-
-   The simplest way to compile this package is:
-
-  1. 'cd' to the directory containing the package's source code and type
-     './configure' to configure the package for your system.
-
-     Running 'configure' might take a while.  While running, it prints
-     some messages telling which features it is checking for.
-
-  2. Type 'make' to compile the package.
-
-  3. Optionally, type 'make check' to run any self-tests that come with
-     the package, generally using the just-built uninstalled binaries.
-
-  4. Type 'make install' to install the programs and any data files and
-     documentation.  When installing into a prefix owned by root, it is
-     recommended that the package be configured and built as a regular
-     user, and only the 'make install' phase executed with root
-     privileges.
-
-  5. Optionally, type 'make installcheck' to repeat any self-tests, but
-     this time using the binaries in their final installed location.
-     This target does not install anything.  Running this target as a
-     regular user, particularly if the prior 'make install' required
-     root privileges, verifies that the installation completed
-     correctly.
-
-  6. You can remove the program binaries and object files from the
-     source code directory by typing 'make clean'.  To also remove the
-     files that 'configure' created (so you can compile the package for
-     a different kind of computer), type 'make distclean'.  There is
-     also a 'make maintainer-clean' target, but that is intended mainly
-     for the package's developers.  If you use it, you may have to get
-     all sorts of other programs in order to regenerate files that came
-     with the distribution.
-
-  7. Often, you can also type 'make uninstall' to remove the installed
-     files again.  In practice, not all packages have tested that
-     uninstallation works correctly, even though it is required by the
-     GNU Coding Standards.
-
-  8. Some packages, particularly those that use Automake, provide 'make
-     distcheck', which can by used by developers to test that all other
-     targets like 'make install' and 'make uninstall' work correctly.
-     This target is generally not run by end users.
-
-Compilers and Options
-=====================
-
-   Some systems require unusual options for compilation or linking that
-the 'configure' script does not know about.  Run './configure --help'
-for details on some of the pertinent environment variables.
-
-   You can give 'configure' initial values for configuration parameters
-by setting variables in the command line or in the environment.  Here is
-an example:
-
-     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
-
-   *Note Defining Variables::, for more details.
-
-Compiling For Multiple Architectures
-====================================
-
-   You can compile the package for more than one kind of computer at the
-same time, by placing the object files for each architecture in their
-own directory.  To do this, you can use GNU 'make'.  'cd' to the
-directory where you want the object files and executables to go and run
-the 'configure' script.  'configure' automatically checks for the source
-code in the directory that 'configure' is in and in '..'.  This is known
-as a "VPATH" build.
-
-   With a non-GNU 'make', it is safer to compile the package for one
-architecture at a time in the source code directory.  After you have
-installed the package for one architecture, use 'make distclean' before
-reconfiguring for another architecture.
-
-   On MacOS X 10.5 and later systems, you can create libraries and
-executables that work on multiple system types--known as "fat" or
-"universal" binaries--by specifying multiple '-arch' options to the
-compiler but only a single '-arch' option to the preprocessor.  Like
-this:
-
-     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
-                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
-                 CPP="gcc -E" CXXCPP="g++ -E"
-
-   This is not guaranteed to produce working output in all cases, you
-may have to build one architecture at a time and combine the results
-using the 'lipo' tool if you have problems.
-
-Installation Names
-==================
-
-   By default, 'make install' installs the package's commands under
-'/usr/local/bin', include files under '/usr/local/include', etc.  You
-can specify an installation prefix other than '/usr/local' by giving
-'configure' the option '--prefix=PREFIX', where PREFIX must be an
-absolute file name.
-
-   You can specify separate installation prefixes for
-architecture-specific files and architecture-independent files.  If you
-pass the option '--exec-prefix=PREFIX' to 'configure', the package uses
-PREFIX as the prefix for installing programs and libraries.
-Documentation and other data files still use the regular prefix.
-
-   In addition, if you use an unusual directory layout you can give
-options like '--bindir=DIR' to specify different values for particular
-kinds of files.  Run 'configure --help' for a list of the directories
-you can set and what kinds of files go in them.  In general, the default
-for these options is expressed in terms of '${prefix}', so that
-specifying just '--prefix' will affect all of the other directory
-specifications that were not explicitly provided.
-
-   The most portable way to affect installation locations is to pass the
-correct locations to 'configure'; however, many packages provide one or
-both of the following shortcuts of passing variable assignments to the
-'make install' command line to change installation locations without
-having to reconfigure or recompile.
-
-   The first method involves providing an override variable for each
-affected directory.  For example, 'make install
-prefix=/alternate/directory' will choose an alternate location for all
-directory configuration variables that were expressed in terms of
-'${prefix}'.  Any directories that were specified during 'configure',
-but not in terms of '${prefix}', must each be overridden at install time
-for the entire installation to be relocated.  The approach of makefile
-variable overrides for each directory variable is required by the GNU
-Coding Standards, and ideally causes no recompilation.  However, some
-platforms have known limitations with the semantics of shared libraries
-that end up requiring recompilation when using this method, particularly
-noticeable in packages that use GNU Libtool.
-
-   The second method involves providing the 'DESTDIR' variable.  For
-example, 'make install DESTDIR=/alternate/directory' will prepend
-'/alternate/directory' before all installation names.  The approach of
-'DESTDIR' overrides is not required by the GNU Coding Standards, and
-does not work on platforms that have drive letters.  On the other hand,
-it does better at avoiding recompilation issues, and works well even
-when some directory options were not specified in terms of '${prefix}'
-at 'configure' time.
-
-Optional Features
-=================
-
-   If the package supports it, you can cause programs to be installed
-with an extra prefix or suffix on their names by giving 'configure' the
-option '--program-prefix=PREFIX' or '--program-suffix=SUFFIX'.
-
-   Some packages pay attention to '--enable-FEATURE' options to
-'configure', where FEATURE indicates an optional part of the package.
-They may also pay attention to '--with-PACKAGE' options, where PACKAGE
-is something like 'gnu-as' or 'x' (for the X Window System).  The
-'README' should mention any '--enable-' and '--with-' options that the
-package recognizes.
-
-   For packages that use the X Window System, 'configure' can usually
-find the X include and library files automatically, but if it doesn't,
-you can use the 'configure' options '--x-includes=DIR' and
-'--x-libraries=DIR' to specify their locations.
-
-   Some packages offer the ability to configure how verbose the
-execution of 'make' will be.  For these packages, running './configure
---enable-silent-rules' sets the default to minimal output, which can be
-overridden with 'make V=1'; while running './configure
---disable-silent-rules' sets the default to verbose, which can be
-overridden with 'make V=0'.
-
-Particular systems
-==================
-
-   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU CC
-is not installed, it is recommended to use the following options in
-order to use an ANSI C compiler:
-
-     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
-
-and if that doesn't work, install pre-built binaries of GCC for HP-UX.
-
-   HP-UX 'make' updates targets which have the same time stamps as their
-prerequisites, which makes it generally unusable when shipped generated
-files such as 'configure' are involved.  Use GNU 'make' instead.
-
-   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
-parse its '<wchar.h>' header file.  The option '-nodtk' can be used as a
-workaround.  If GNU CC is not installed, it is therefore recommended to
-try
-
-     ./configure CC="cc"
-
-and if that doesn't work, try
-
-     ./configure CC="cc -nodtk"
-
-   On Solaris, don't put '/usr/ucb' early in your 'PATH'.  This
-directory contains several dysfunctional programs; working variants of
-these programs are available in '/usr/bin'.  So, if you need '/usr/ucb'
-in your 'PATH', put it _after_ '/usr/bin'.
-
-   On Haiku, software installed for all users goes in '/boot/common',
-not '/usr/local'.  It is recommended to use the following options:
-
-     ./configure --prefix=/boot/common
-
-Specifying the System Type
-==========================
-
-   There may be some features 'configure' cannot figure out
-automatically, but needs to determine by the type of machine the package
-will run on.  Usually, assuming the package is built to be run on the
-_same_ architectures, 'configure' can figure that out, but if it prints
-a message saying it cannot guess the machine type, give it the
-'--build=TYPE' option.  TYPE can either be a short name for the system
-type, such as 'sun4', or a canonical name which has the form:
-
-     CPU-COMPANY-SYSTEM
-
-where SYSTEM can have one of these forms:
-
-     OS
-     KERNEL-OS
-
-   See the file 'config.sub' for the possible values of each field.  If
-'config.sub' isn't included in this package, then this package doesn't
-need to know the machine type.
-
-   If you are _building_ compiler tools for cross-compiling, you should
-use the option '--target=TYPE' to select the type of system they will
-produce code for.
-
-   If you want to _use_ a cross compiler, that generates code for a
-platform different from the build platform, you should specify the
-"host" platform (i.e., that on which the generated programs will
-eventually be run) with '--host=TYPE'.
-
-Sharing Defaults
-================
-
-   If you want to set default values for 'configure' scripts to share,
-you can create a site shell script called 'config.site' that gives
-default values for variables like 'CC', 'cache_file', and 'prefix'.
-'configure' looks for 'PREFIX/share/config.site' if it exists, then
-'PREFIX/etc/config.site' if it exists.  Or, you can set the
-'CONFIG_SITE' environment variable to the location of the site script.
-A warning: not all 'configure' scripts look for a site script.
-
-Defining Variables
-==================
-
-   Variables not defined in a site shell script can be set in the
-environment passed to 'configure'.  However, some packages may run
-configure again during the build, and the customized values of these
-variables may be lost.  In order to avoid this problem, you should set
-them in the 'configure' command line, using 'VAR=value'.  For example:
-
-     ./configure CC=/usr/local2/bin/gcc
-
-causes the specified 'gcc' to be used as the C compiler (unless it is
-overridden in the site shell script).
-
-Unfortunately, this technique does not work for 'CONFIG_SHELL' due to an
-Autoconf limitation.  Until the limitation is lifted, you can use this
-workaround:
-
-     CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
-
-'configure' Invocation
-======================
-
-   'configure' recognizes the following options to control how it
-operates.
-
-'--help'
-'-h'
-     Print a summary of all of the options to 'configure', and exit.
-
-'--help=short'
-'--help=recursive'
-     Print a summary of the options unique to this package's
-     'configure', and exit.  The 'short' variant lists options used only
-     in the top level, while the 'recursive' variant lists options also
-     present in any nested packages.
-
-'--version'
-'-V'
-     Print the version of Autoconf used to generate the 'configure'
-     script, and exit.
-
-'--cache-file=FILE'
-     Enable the cache: use and save the results of the tests in FILE,
-     traditionally 'config.cache'.  FILE defaults to '/dev/null' to
-     disable caching.
-
-'--config-cache'
-'-C'
-     Alias for '--cache-file=config.cache'.
-
-'--quiet'
-'--silent'
-'-q'
-     Do not print messages saying which checks are being made.  To
-     suppress all normal output, redirect it to '/dev/null' (any error
-     messages will still be shown).
-
-'--srcdir=DIR'
-     Look for the package's source code in directory DIR.  Usually
-     'configure' can determine that directory automatically.
-
-'--prefix=DIR'
-     Use DIR as the installation prefix.  *note Installation Names:: for
-     more details, including other options available for fine-tuning the
-     installation locations.
-
-'--no-create'
-'-n'
-     Run the configure checks, but stop before creating any output
-     files.
-
-'configure' also accepts some other, not widely useful, options.  Run
-'configure --help' for more details.
diff --git a/Makefile.am b/Makefile.am
deleted file mode 100644
index f3ecbdc..0000000
--- a/Makefile.am
+++ /dev/null
@@ -1,3 +0,0 @@
-ACLOCAL_AMFLAGS = -I build-aux/m4
-
-SUBDIRS = librtbuf cli gtk3 lib
diff --git a/NEWS b/NEWS
deleted file mode 100644
index e69de29..0000000
--- a/NEWS
+++ /dev/null
diff --git a/README b/README
deleted file mode 100644
index e69de29..0000000
--- a/README
+++ /dev/null
diff --git a/README.md b/README.md
index f9801ff..c8cdf16 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,14 @@ Real time signal processing in ANSI C.
 
 See https://rtbuf.kmx.io/
 
+## Installation
+
+```
+./configure
+make
+make install
+```
+
 ## Issues
 
 signal/bandpass2 does not work
diff --git a/autogen.sh b/autogen.sh
deleted file mode 100755
index 5f76331..0000000
--- a/autogen.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/sh
-set -e
-
-srcdir="$(dirname $0)"
-cd "$srcdir"
-
-which autoreconf >/dev/null || \
-  (echo "configuration failed, please install autoconf first" && exit 1)
-
-autoreconf --install --force --warnings=all
diff --git a/config.subr b/config.subr
new file mode 100644
index 0000000..577dde2
--- /dev/null
+++ b/config.subr
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+c_lo_deps() {
+    echo >> ${CONFIG_MK}
+    $CC -M "$1" | sed -e 's/[.]o:/.lo:/' >> ${CONFIG_MK}
+}
+
+c2prog() {
+    echo "$@" | sed -e 's/[.]c$//' -e 's/[.]c / /g'
+}
+
+c2o() {
+    echo "$@" | sed -e 's/[.]c$/.o/' -e 's/[.]c /.o /g'
+}
+
+c2lo() {
+    echo "$@" | sed -e 's/[.]c$/.lo/' -e 's/[.]c /.lo /g'
+}
+
+c2la() {
+    echo "$@" | sed -e 's/[.]c$/.la/' -e 's/[.]c /.la /g'
+}
+
+CONFIG_MK=config.mk
+echo "# config.mk generated by configure" > ${CONFIG_MK}
+
+if test -z "$CC"; then
+    if test -n $(which cc); then
+        CC=cc
+    elif test -n $(which gcc); then
+        CC=gcc
+    fi
+fi
+echo "CC = $CC" >> ${CONFIG_MK}
+
+if test -x /usr/local/bin/libtool; then
+    LIBTOOL=/usr/local/bin/libtool
+else
+    LIBTOOL=libtool
+fi
+echo "LIBTOOL = $LIBTOOL" >> ${CONFIG_MK}
+
+if test -z "$INSTALL"; then
+    if test -x "$(which install)"; then
+        INSTALL=install
+    fi
+fi
+echo "INSTALL = $INSTALL" >> ${CONFIG_MK}
diff --git a/gtk3/rtbuf_gtk.gresource.xml b/gtk3/rtbuf_gtk.gresource.xml
deleted file mode 100644
index 41b0bcc..0000000
--- a/gtk3/rtbuf_gtk.gresource.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<gresources>
-  <gresource prefix="/rtbuf/">
-    <file>player_play.png</file>
-    <file>player_stop.png</file>
-    <file>rtbuf.png</file>
-    <file preprocess="xml-stripblanks">rtbuf_input_widget.ui</file>
-    <file preprocess="xml-stripblanks">rtbuf_modular.ui</file>
-    <file preprocess="xml-stripblanks">rtbuf_output_widget.ui</file>
-    <file preprocess="xml-stripblanks">rtbuf_widget.ui</file>
-  </gresource>
-  <gresource prefix="/org/gtk/libgtk/icons/24x24/status/">
-    <file>image-missing.png</file>
-  </gresource>
-</gresources>
diff --git a/gtk3/rtbuf_gtk3.gresource.xml b/gtk3/rtbuf_gtk3.gresource.xml
new file mode 100644
index 0000000..41b0bcc
--- /dev/null
+++ b/gtk3/rtbuf_gtk3.gresource.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/rtbuf/">
+    <file>player_play.png</file>
+    <file>player_stop.png</file>
+    <file>rtbuf.png</file>
+    <file preprocess="xml-stripblanks">rtbuf_input_widget.ui</file>
+    <file preprocess="xml-stripblanks">rtbuf_modular.ui</file>
+    <file preprocess="xml-stripblanks">rtbuf_output_widget.ui</file>
+    <file preprocess="xml-stripblanks">rtbuf_widget.ui</file>
+  </gresource>
+  <gresource prefix="/org/gtk/libgtk/icons/24x24/status/">
+    <file>image-missing.png</file>
+  </gresource>
+</gresources>
diff --git a/gtk3/rtbuf_gtk3_connection.h b/gtk3/rtbuf_gtk3_connection.h
new file mode 100644
index 0000000..19efd9d
--- /dev/null
+++ b/gtk3/rtbuf_gtk3_connection.h
@@ -0,0 +1,31 @@
+#ifndef RTBUF_GTK_CONNECTION_H
+#define RTBUF_GTK_CONNECTION_H
+
+#include "rtbuf_input_widget.h"
+#include "rtbuf_output_widget.h"
+
+typedef struct rtbuf_gtk_connection s_rtbuf_gtk_connection;
+
+struct rtbuf_gtk_connection {
+  RtbufOutputWidget *output_widget;
+  RtbufInputWidget *input_widget;
+  s_rtbuf_gtk_connection *next;
+};
+
+void rtbuf_gtk_connection_init ();
+s_rtbuf_gtk_connection * rtbuf_gtk_connection_new ();
+void rtbuf_gtk_connection_delete (s_rtbuf_gtk_connection *connection);
+
+void rtbuf_gtk_connection_push (s_rtbuf_gtk_connection **head,
+                                s_rtbuf_gtk_connection *item);
+int rtbuf_gtk_connection_remove_one (s_rtbuf_gtk_connection **head,
+                                     s_rtbuf_gtk_connection *item);
+s_rtbuf_gtk_connection * rtbuf_gtk_connection_find
+(s_rtbuf_gtk_connection *c,
+ RtbufOutputWidget *output_widget,
+ RtbufInputWidget *input_widget);
+
+void rtbuf_gtk_connection_remove_rtbuf (s_rtbuf_gtk_connection **head,
+                                        s_rtbuf *rtbuf);
+
+#endif
diff --git a/gtk3/rtbuf_gtk_connection.h b/gtk3/rtbuf_gtk_connection.h
deleted file mode 100644
index 19efd9d..0000000
--- a/gtk3/rtbuf_gtk_connection.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#ifndef RTBUF_GTK_CONNECTION_H
-#define RTBUF_GTK_CONNECTION_H
-
-#include "rtbuf_input_widget.h"
-#include "rtbuf_output_widget.h"
-
-typedef struct rtbuf_gtk_connection s_rtbuf_gtk_connection;
-
-struct rtbuf_gtk_connection {
-  RtbufOutputWidget *output_widget;
-  RtbufInputWidget *input_widget;
-  s_rtbuf_gtk_connection *next;
-};
-
-void rtbuf_gtk_connection_init ();
-s_rtbuf_gtk_connection * rtbuf_gtk_connection_new ();
-void rtbuf_gtk_connection_delete (s_rtbuf_gtk_connection *connection);
-
-void rtbuf_gtk_connection_push (s_rtbuf_gtk_connection **head,
-                                s_rtbuf_gtk_connection *item);
-int rtbuf_gtk_connection_remove_one (s_rtbuf_gtk_connection **head,
-                                     s_rtbuf_gtk_connection *item);
-s_rtbuf_gtk_connection * rtbuf_gtk_connection_find
-(s_rtbuf_gtk_connection *c,
- RtbufOutputWidget *output_widget,
- RtbufInputWidget *input_widget);
-
-void rtbuf_gtk_connection_remove_rtbuf (s_rtbuf_gtk_connection **head,
-                                        s_rtbuf *rtbuf);
-
-#endif
diff --git a/librtbuf/Makefile.am b/librtbuf/Makefile.am
deleted file mode 100644
index 6b104f6..0000000
--- a/librtbuf/Makefile.am
+++ /dev/null
@@ -1,24 +0,0 @@
-
-lib_LTLIBRARIES = librtbuf.la
-librtbuf_la_CFLAGS = ${LIBRTBUF_CFLAGS}
-librtbuf_la_LDFLAGS = -no-undefined
-librtbuf_la_LIBADD = ${LIBRTBUF_LIBS}
-librtbuf_la_SOURCES = \
-	data.c \
-	symbol.c \
-	rtbuf_lib.c \
-	rtbuf_type.c \
-	rtbuf_proc.c \
-	rtbuf_var.c \
-	rtbuf.c
-
-rtbuf_includedir = $(includedir)/rtbuf
-rtbuf_include_HEADERS = \
-	include/rtbuf/data.h \
-	include/rtbuf/symbol.h \
-	include/rtbuf/defs.h \
-	include/rtbuf/lib.h \
-	include/rtbuf/proc.h \
-	include/rtbuf/type.h \
-	include/rtbuf/var.h \
-	include/rtbuf/rtbuf.h
diff --git a/librtbuf/configure b/librtbuf/configure
new file mode 100755
index 0000000..82be2b8
--- /dev/null
+++ b/librtbuf/configure
@@ -0,0 +1,42 @@
+#!/bin/sh
+set -e
+
+. ../config.subr
+
+LIB=librtbuf.la
+
+SOURCES="$(ls *.c | tr '\n' ' ')"
+echo "SOURCES = $SOURCES" >> ${CONFIG_MK}
+
+OBJECTS="$(c2lo "$SOURCES")"
+echo "OBJECTS = $OBJECTS" >> ${CONFIG_MK}
+
+if test -d /usr/local/include; then
+    CPPFLAGS="-I/usr/local/include"
+fi
+CPPFLAGS="$CPPFLAGS -I./include"
+echo "CPPFLAGS = $CPPFLAGS" >> ${CONFIG_MK}
+
+if [ x"$DEBUG" = x"yes" ]; then
+    CFLAGS="-DDEBUG -O0 -ggdb"
+else
+    CFLAGS="-DNDEBUG -O3"
+fi
+CFLAGS="$CFLAGS -W -Wall -Werror -std=c89 -pedantic"
+echo "CFLAGS = $CFLAGS" >> ${CONFIG_MK}
+
+LDFLAGS=""
+echo "LDFLAGS = $LDFLAGS" >> ${CONFIG_MK}
+
+LIBDIR=/usr/local/lib
+echo "LIBDIR = $LIBDIR" >> ${CONFIG_MK}
+
+for SRC in $SOURCES; do
+    SRC_LO="$(c2lo "$SRC")"
+    c_lo_deps $SRC
+    echo "\t${LIBTOOL} --tag=CC --mode=compile \${CC} \${CPPFLAGS} \${CFLAGS} -c $SRC -o $SRC_LO" >> ${CONFIG_MK}
+done
+
+echo >> ${CONFIG_MK}
+echo "$LIB: $OBJECTS" >> ${CONFIG_MK}
+echo "\t${LIBTOOL} --tag=CC --mode=link \${CC} \${LDFLAGS} $OBJECTS -o $LIB -rpath ${LIBDIR}" >> ${CONFIG_MK}
diff --git a/librtbuf/data.c b/librtbuf/data.c
index 90373dc..7c62dd0 100644
--- a/librtbuf/data.c
+++ b/librtbuf/data.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -17,7 +17,7 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <strings.h>
-#include <rtbuf/data.h>
+#include "data.h"
 
 s_data_type g_data_alloc_type = {
   sizeof(s_data_alloc) * 8,
@@ -67,7 +67,7 @@ void * data_new_at (s_data_alloc *da, unsigned int i)
 {
   unsigned int octets = (da->t->bits + 7) / 8;
   unsigned int offset = i * octets;
-  void *m = da->mem + offset;
+  void *m = (char*) da->mem + offset;
   bzero(m, octets);
   if (da->init)
     da->init(m);
@@ -118,7 +118,7 @@ void data_delete (s_data_alloc *da, void *data)
   if (da->clean)
     da->clean(data);
   bzero(data, octets);
-  i = (data - da->mem) / octets;
+  i = ((char*) data - (char*) da->mem) / octets;
   da->free[da->free_n++] = i;
 }
 
diff --git a/librtbuf/data.h b/librtbuf/data.h
new file mode 100644
index 0000000..e756285
--- /dev/null
+++ b/librtbuf/data.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef DATA_H
+#define DATA_H
+
+typedef enum {
+  DATA_TYPE_BITS,
+  DATA_TYPE_VECTOR,
+  DATA_TYPE_INTEGER,
+  DATA_TYPE_FLOAT,
+  DATA_TYPE_STRUCT
+} e_data_type;
+
+#define DATA_TYPE_SIGNED     1
+#define DATA_TYPE_BIG_ENDIAN 2
+
+typedef struct data_type {
+  unsigned int bits;
+  unsigned int type;
+} s_data_type;
+
+typedef struct data_type_vector {
+  s_data_type  t;
+  s_data_type *element_type;
+  unsigned int nmemb;
+} s_data_type_vector;
+
+typedef struct data_type_integer {
+  s_data_type  t;
+  unsigned int flags;
+} s_data_type_integer;
+
+typedef struct data_type_float {
+  s_data_type t;
+} s_data_type_float;
+
+typedef struct data_type_struct {
+  s_data_type  t;
+  s_data_type *first;
+  struct data_type_struct *rest;
+} s_data_type_struct;
+
+typedef union data_type_ {
+  s_data_type         t;
+  s_data_type_vector  t_vector;
+  s_data_type_integer t_integer;
+  s_data_type_float   t_float;
+  s_data_type_struct  t_struct;
+} u_data_type;
+
+#define DATA_TYPE_MAX 1024
+
+u_data_type * data_type_new (unsigned int bits, unsigned int type);
+void          data_type_delete (s_data_type *t);
+
+typedef void f_data_init (void *data);
+typedef void f_data_clean (void *data);
+
+typedef struct data_alloc {
+  s_data_type  *t;
+  unsigned int  max;
+  void         *mem;
+  unsigned int  n;
+  unsigned int *free;
+  unsigned int  free_n;
+  f_data_init  *init;
+  f_data_clean *clean;
+} s_data_alloc;
+
+#define DATA_ALLOC_MAX 1024
+
+void * data_new (s_data_alloc *da);
+int    data_new_i (s_data_alloc *da);
+void   data_delete (s_data_alloc *da, void *data);
+
+void           data_alloc_init (s_data_alloc *da, s_data_type *t,
+                                unsigned int max, f_data_init *init,
+                                f_data_clean *clean);
+void           data_alloc_clean (s_data_alloc *da);
+s_data_alloc * data_alloc_new (s_data_type *t,
+                               unsigned int max, f_data_init *init,
+                               f_data_clean *clean);
+void           data_alloc_delete (s_data_alloc *da);
+
+int libdata_init ();
+
+#endif
diff --git a/librtbuf/defs.h b/librtbuf/defs.h
new file mode 100644
index 0000000..0830b88
--- /dev/null
+++ b/librtbuf/defs.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef RTBUF_DEFS_H
+#define RTBUF_DEFS_H
+
+typedef struct rtbuf              s_rtbuf;
+typedef struct rtbuf_binding      s_rtbuf_binding;
+typedef struct rtbuf_proc         s_rtbuf_proc;
+typedef struct rtbuf_proc_in      s_rtbuf_proc_in;
+typedef struct rtbuf_proc_out     s_rtbuf_proc_out;
+typedef struct rtbuf_lib          s_rtbuf_lib;
+typedef struct rtbuf_lib_proc     s_rtbuf_lib_proc;
+typedef struct rtbuf_lib_proc_in  s_rtbuf_lib_proc_in;
+typedef struct rtbuf_lib_proc_out s_rtbuf_lib_proc_out;
+typedef struct rtbuf_type         s_rtbuf_type;
+typedef struct rtbuf_var          s_rtbuf_var;
+typedef union rtbuf_var_data      u_rtbuf_var_data;
+
+typedef enum rtbuf_var_type {
+  RTBUF_VAR_NULL  = 0,
+  RTBUF_VAR_RTBUF = 1
+} e_rtbuf_var_type;
+
+typedef int f_rtbuf_proc (s_rtbuf *rtbuf);
+typedef int f_rtbuf_lib_init (s_rtbuf_lib *lib);
+
+#endif
diff --git a/librtbuf/include/rtbuf/data.h b/librtbuf/include/rtbuf/data.h
deleted file mode 100644
index 8e61f96..0000000
--- a/librtbuf/include/rtbuf/data.h
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef DATA_H
-#define DATA_H
-
-typedef enum {
-  DATA_TYPE_BITS,
-  DATA_TYPE_VECTOR,
-  DATA_TYPE_INTEGER,
-  DATA_TYPE_FLOAT,
-  DATA_TYPE_STRUCT
-} e_data_type;
-
-#define DATA_TYPE_SIGNED     1
-#define DATA_TYPE_BIG_ENDIAN 2
-
-typedef struct data_type {
-  unsigned int bits;
-  unsigned int type;
-} s_data_type;
-
-typedef struct data_type_vector {
-  s_data_type  t;
-  s_data_type *element_type;
-  unsigned int nmemb;
-} s_data_type_vector;
-
-typedef struct data_type_integer {
-  s_data_type  t;
-  unsigned int flags;
-} s_data_type_integer;
-
-typedef struct data_type_float {
-  s_data_type t;
-} s_data_type_float;
-
-typedef struct data_type_struct {
-  s_data_type  t;
-  s_data_type *first;
-  struct data_type_struct *rest;
-} s_data_type_struct;
-
-typedef union data_type_ {
-  s_data_type         t;
-  s_data_type_vector  t_vector;
-  s_data_type_integer t_integer;
-  s_data_type_float   t_float;
-  s_data_type_struct  t_struct;
-} u_data_type;
-
-#define DATA_TYPE_MAX 1024
-
-u_data_type * data_type_new (unsigned int bits, unsigned int type);
-void          data_type_delete (s_data_type *t);
-
-typedef void f_data_init (void *data);
-typedef void f_data_clean (void *data);
-
-typedef struct data_alloc {
-  s_data_type  *t;
-  unsigned int  max;
-  void         *mem;
-  unsigned int  n;
-  unsigned int *free;
-  unsigned int  free_n;
-  f_data_init  *init;
-  f_data_clean *clean;
-} s_data_alloc;
-
-#define DATA_ALLOC_MAX 1024
-
-void * data_new (s_data_alloc *da);
-int    data_new_i (s_data_alloc *da);
-void   data_delete (s_data_alloc *da, void *data);
-
-void           data_alloc_init (s_data_alloc *da, s_data_type *t,
-                                unsigned int max, f_data_init *init,
-                                f_data_clean *clean);
-void           data_alloc_clean (s_data_alloc *da);
-s_data_alloc * data_alloc_new (s_data_type *t,
-                               unsigned int max, f_data_init *init,
-                               f_data_clean *clean);
-void           data_alloc_delete (s_data_alloc *da);
-
-int libdata_init ();
-
-#endif
diff --git a/librtbuf/include/rtbuf/defs.h b/librtbuf/include/rtbuf/defs.h
deleted file mode 100644
index 4d88bc7..0000000
--- a/librtbuf/include/rtbuf/defs.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef RTBUF_DEFS_H
-#define RTBUF_DEFS_H
-
-typedef struct rtbuf              s_rtbuf;
-typedef struct rtbuf_binding      s_rtbuf_binding;
-typedef struct rtbuf_proc         s_rtbuf_proc;
-typedef struct rtbuf_proc_in      s_rtbuf_proc_in;
-typedef struct rtbuf_proc_out     s_rtbuf_proc_out;
-typedef struct rtbuf_lib          s_rtbuf_lib;
-typedef struct rtbuf_lib_proc     s_rtbuf_lib_proc;
-typedef struct rtbuf_lib_proc_in  s_rtbuf_lib_proc_in;
-typedef struct rtbuf_lib_proc_out s_rtbuf_lib_proc_out;
-typedef struct rtbuf_type         s_rtbuf_type;
-typedef struct rtbuf_var          s_rtbuf_var;
-typedef union rtbuf_var_data      u_rtbuf_var_data;
-
-typedef enum rtbuf_var_type {
-  RTBUF_VAR_NULL  = 0,
-  RTBUF_VAR_RTBUF = 1
-} e_rtbuf_var_type;
-
-typedef int f_rtbuf_proc (s_rtbuf *rtbuf);
-typedef int f_rtbuf_lib_init (s_rtbuf_lib *lib);
-
-#endif
diff --git a/librtbuf/include/rtbuf/lib.h b/librtbuf/include/rtbuf/lib.h
deleted file mode 100644
index 5b9f4f8..0000000
--- a/librtbuf/include/rtbuf/lib.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright 2018,2020 Thomas de Grivel <thoxdg@gmail.com>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef RTBUF_LIB_H
-#define RTBUF_LIB_H
-
-#include <rtbuf/defs.h>
-
-#define RTBUF_LIB_MAX 1000
-#define RTBUF_LIB_VER 0x00020001
-
-struct rtbuf_lib_proc_in {
-  const char *name;
-  const char *type;
-  double def;
-  double min;
-  double max;
-  double log_base;
-};
-
-struct rtbuf_lib_proc_out {
-  const char *name;
-  const char *type;
-};
-
-struct rtbuf_lib_proc {
-  const char *name;
-  f_rtbuf_proc *f;
-  f_rtbuf_proc *start;
-  f_rtbuf_proc *stop;
-  s_rtbuf_lib_proc_in *in;    /* inputs, end with NULL */
-  s_rtbuf_lib_proc_out *out;  /* outputs, end with NULL */
-};
-
-struct rtbuf_lib {
-  const char *name;
-  s_rtbuf_proc *proc;
-  void *lib;
-  const char *path;
-};
-
-extern char *g_rtbuf_lib_path[];
-
-extern s_data_alloc g_rtbuf_lib_alloc;
-extern s_rtbuf_lib *g_rtbuf_lib;
-
-void          rtbuf_lib_delete (s_rtbuf_lib *rl);
-int           rtbuf_lib_find (const char *str);
-void          rtbuf_lib_init_ ();
-s_rtbuf_lib * rtbuf_lib_load (const char *path);
-s_rtbuf_lib * rtbuf_lib_new ();
-void          rtbuf_lib_print (const s_rtbuf_lib *lib);
-void          rtbuf_lib_print_long (unsigned int i);
-
-void rtbuf_lib_proc_var_init_proc (s_rtbuf_proc *proc,
-                                   s_rtbuf_lib_proc_in *in);
-void rtbuf_lib_proc_out_init_proc (s_rtbuf_proc *proc,
-                                   s_rtbuf_lib_proc_out *out);
-void rtbuf_lib_proc_init_proc (s_rtbuf_proc *proc, s_rtbuf_lib_proc *x);
-
-#endif
diff --git a/librtbuf/include/rtbuf/proc.h b/librtbuf/include/rtbuf/proc.h
deleted file mode 100644
index 32441dc..0000000
--- a/librtbuf/include/rtbuf/proc.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef RTBUF_PROC_H
-#define RTBUF_PROC_H
-
-#include <rtbuf/data.h>
-#include <rtbuf/defs.h>
-#include <rtbuf/symbol.h>
-
-struct rtbuf_proc_in {
-  symbol name;
-  const char *name_type;
-  s_rtbuf_type *type;
-  double def;
-  double min;
-  double max;
-  double log_base;
-  unsigned int offset;
-};
-
-struct rtbuf_proc_out {
-  symbol name;
-  const char *name_type;
-  s_rtbuf_type *type;
-  unsigned int offset;
-};
-
-#define RTBUF_PROC_IN_MAX 1024
-#define RTBUF_PROC_OUT_MAX 1024
-
-struct rtbuf_proc {
-  symbol           name;
-  f_rtbuf_proc    *f;
-  f_rtbuf_proc    *start;
-  f_rtbuf_proc    *stop;
-  s_rtbuf_proc_in  in[RTBUF_PROC_IN_MAX];    /* inputs */
-  unsigned int     in_n;                     /* number of inputs */
-  unsigned int     in_bytes;   /* size of input data in bytes */
-  s_rtbuf_proc_out out[RTBUF_PROC_OUT_MAX];  /* outputs */
-  unsigned int     out_n;                    /* number of outputs */
-  unsigned int     out_bytes;  /* size of output data in bytes */
-  s_rtbuf_lib     *lib;        /* the library this procedure comes from */
-  unsigned int     bytes;      /* size of buffer data in bytes */
-  s_data_type      type;
-  s_data_alloc     alloc;
-};
-
-#define RTBUF_PROC_MAX 1024
-extern s_data_alloc  g_rtbuf_proc_alloc;
-extern s_rtbuf_proc *g_rtbuf_proc;
-
-void           rtbuf_proc_init ();
-int            rtbuf_proc_p (s_rtbuf_proc *proc);
-s_rtbuf_proc * rtbuf_proc_new ();
-void           rtbuf_proc_delete (s_rtbuf_proc *proc);
-s_rtbuf_proc * rtbuf_proc_find (const char *x);
-int            rtbuf_proc_out_find (s_rtbuf_proc *proc,
-                                    const char *name);
-void           rtbuf_proc_print (s_rtbuf_proc *proc);
-
-#endif
diff --git a/librtbuf/include/rtbuf/queue.h b/librtbuf/include/rtbuf/queue.h
deleted file mode 100644
index f886dd3..0000000
--- a/librtbuf/include/rtbuf/queue.h
+++ /dev/null
@@ -1,60 +0,0 @@
-#ifndef QUEUE_H
-#define QUEUE_H
-
-/* static queue */
-
-#define QUEUE_TYPE(type, size)  \
-  type ## _queue_ ## size
-
-#define QUEUE(type, size)          \
-  struct QUEUE_TYPE(type, size) {  \
-    unsigned int length;           \
-    unsigned int read_index;       \
-    unsigned int write_index;      \
-    type item[size];               \
-  }
-
-#define S_QUEUE_TYPE(type, size)  \
-  s_ ## QUEUE_TYPE(type, size)
-
-#define QUEUE_METHOD(type, size, method)  \
-  QUEUE_TYPE(type, size) ## _ ## method
-
-#define DEFINE_QUEUE(type, size)                            \
-  typedef QUEUE(type, size) S_QUEUE_TYPE(type, size);       \
-  static void QUEUE_METHOD(type, size, init)                \
-    (S_QUEUE_TYPE(type, size) *q)                           \
-  {                                                         \
-    bzero(q, sizeof(q));                                    \
-  }                                                         \
-  static void QUEUE_METHOD(type, size, free)                \
-    (S_QUEUE_TYPE(type, size) *q)                           \
-  {                                                         \
-    bzero(q, sizeof(q));                                    \
-  }                                                         \
-  static int QUEUE_METHOD(type, size, enqueue)              \
-    (S_QUEUE_TYPE(type, size) *q, type item)                \
-  {                                                         \
-    if (q->length < size) {                                 \
-      unsigned int write_index = q->write_index;            \
-      q->write_index = (q->write_index + 1) % size;         \
-      q->item[write_index] = item;                          \
-      q->length++;                                          \
-      return 0;                                             \
-    }                                                       \
-    return -1;                                              \
-  }                                                         \
-  static int QUEUE_METHOD(type, size, dequeue)              \
-    (S_QUEUE_TYPE(type, size) *q, type *ptr)                \
-  {                                                         \
-    if (q->length > 0) {                                    \
-      unsigned int read_index = q->read_index;              \
-      q->read_index = (read_index + 1) % size;              \
-      *ptr = q->item[read_index];                           \
-      q->length--;                                          \
-      return 0;                                             \
-    }                                                       \
-    return -1;                                              \
-  }
-
-#endif
diff --git a/librtbuf/include/rtbuf/rtbuf.h b/librtbuf/include/rtbuf/rtbuf.h
deleted file mode 100644
index bbabab5..0000000
--- a/librtbuf/include/rtbuf/rtbuf.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright 2018-2020 Thomas de Grivel <thoxdg@gmail.com>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef RTBUF_H
-#define RTBUF_H
-
-#include <rtbuf/data.h>
-#include <rtbuf/defs.h>
-#include <rtbuf/type.h>
-#include <rtbuf/proc.h>
-
-#define RTBUF_SORT     0x0001
-#define RTBUF_DELETE   0x0002
-#define RTBUF_NEW      0x0004
-#define RTBUF_READY    0x0008
-
-struct rtbuf_binding
-{
-  int rtb;
-  unsigned int out;
-};
-
-struct rtbuf
-{
-  void           *data;
-  unsigned int    flags;
-  s_rtbuf_proc   *proc;
-  unsigned int    refc;
-  s_rtbuf_binding in[RTBUF_PROC_IN_MAX];
-  unsigned int    in_n;
-  void           *user_ptr;
-};
-
-#define RTBUF_MAX         10000
-#define RTBUF_INSTANCE_MAX  100
-
-extern s_data_alloc g_rtbuf_alloc;
-extern s_rtbuf     *g_rtbuf;
-extern int          g_rtbuf_run;
-
-typedef void (*f_rtbuf_new_cb) (s_rtbuf *rtb);
-typedef void (*f_rtbuf_delete_cb) (s_rtbuf *rtb);
-typedef void (*f_rtbuf_bind_cb) (s_rtbuf *src, unsigned int out,
-                                 s_rtbuf *dest, unsigned int in);
-typedef void (*f_rtbuf_unbind_cb) (s_rtbuf *src, unsigned int out,
-                                   s_rtbuf *dest, unsigned int in);
-
-extern f_rtbuf_new_cb    g_rtbuf_new_cb;
-extern f_rtbuf_delete_cb g_rtbuf_delete_cb;
-extern f_rtbuf_bind_cb   g_rtbuf_bind_cb;
-extern f_rtbuf_unbind_cb g_rtbuf_unbind_cb;
-
-int   librtbuf_init ();
-
-int   rtbuf_err (const char *msg);
-int   rtbuf_new (s_rtbuf_proc *rp);
-int   rtbuf_new_ptr (s_rtbuf_proc *rp, void *user_ptr);
-void  rtbuf_in_unbind (s_rtbuf *rtb, unsigned int in);
-void  rtbuf_out_unbind (s_rtbuf *rtb, unsigned int out);
-void  rtbuf_unbind_all (s_rtbuf *rtb);
-void  rtbuf_delete (s_rtbuf *rtb);
-int   rtbuf_clone (s_rtbuf *rtb);
-int   rtbuf_find (symbol sym);
-int   rtbuf_in_find (s_rtbuf *rtb, const char *x);
-void  rtbuf_bind (unsigned int src, unsigned int out,
-                  s_rtbuf *dest, unsigned int in);
-int   rtbuf_out_find (s_rtbuf *rtb, symbol sym);
-int   rtbuf_data_set (s_rtbuf *rtb, symbol name, void *value,
-                      unsigned int size);
-void  rtbuf_sort ();
-int   rtbuf_start ();
-int   rtbuf_run ();
-void  rtbuf_stop ();
-void  rtbuf_print (unsigned int i);
-void  rtbuf_print_long (unsigned int i);
-void  rtbuf_print_sorted ();
-
-int  rtbuf_out_int (s_rtbuf *rtb, unsigned int out, int default_value);
-
-double * rtbuf_in_unbound_value (s_rtbuf *rtb, unsigned int in);
-
-double min (double a, double b);
-double max (double a, double b);
-double clamp (double inf, double x, double sup);
-
-#endif /* RTBUF_H */
diff --git a/librtbuf/include/rtbuf/symbol.h b/librtbuf/include/rtbuf/symbol.h
deleted file mode 100644
index c071589..0000000
--- a/librtbuf/include/rtbuf/symbol.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef SYMBOL_H
-#define SYMBOL_H
-
-#include <sys/types.h>
-
-typedef const char *symbol;
-
-#define STRING_MAX 65536
-extern char         g_str_start[STRING_MAX];
-extern char        *g_str;
-extern unsigned int g_str_n;
-extern unsigned int g_str_last;
-
-char * g_str_append (const char *str, size_t len);
-void   g_str_reset (char *head);
-
-#define SYMBOL_MAX 32768
-extern symbol       g_symbols[SYMBOL_MAX];
-extern unsigned int g_symbols_n;
-
-void   symbols_init ();
-symbol symbol_new (symbol name);
-void   symbol_delete (symbol sym);
-symbol symbol_find (symbol name);
-symbol symbol_intern (const char *name);
-
-#endif
diff --git a/librtbuf/include/rtbuf/type.h b/librtbuf/include/rtbuf/type.h
deleted file mode 100644
index 86b848d..0000000
--- a/librtbuf/include/rtbuf/type.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#ifndef RTBUF_TYPE_H
-#define RTBUF_TYPE_H
-
-#include <rtbuf/data.h>
-#include <rtbuf/defs.h>
-#include <rtbuf/symbol.h>
-
-struct rtbuf_type {
-  symbol       name;
-  s_data_type  t;
-};
-
-#define RTBUF_TYPE_MAX 1024
-
-void           rtbuf_type_init ();
-s_rtbuf_type * rtbuf_type_new (const char *name,
-                               unsigned int size);
-void           rtbuf_type_delete (s_rtbuf_type *rt);
-s_rtbuf_type * rtbuf_type_find (symbol name);
-s_rtbuf_type * rtbuf_type_define (const char *name,
-                                  unsigned int size);
-s_rtbuf_type * rtbuf_type (const char *name);
-s_rtbuf_type * rtbuf_type_array (const char *element_type,
-                                 unsigned int size);
-
-#define RTBUF_TYPE_CHAR_ARRAY(size) ("char[" #size "]")
-#define RTBUF_TYPE_SHORT_ARRAY(size) ("short[" #size "]")
-#define RTBUF_TYPE_DOUBLE_ARRAY(size) ("double[" #size "]")
-
-#endif
diff --git a/librtbuf/include/rtbuf/var.h b/librtbuf/include/rtbuf/var.h
deleted file mode 100644
index 0d37215..0000000
--- a/librtbuf/include/rtbuf/var.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef RTBUF_VAR_H
-#define RTBUF_VAR_H
-
-#include <rtbuf/defs.h>
-
-#define RTBUF_VAR_MAX 1000
-
-struct rtbuf_var {
-  e_rtbuf_var_type type;
-  const char *name;
-  unsigned index;
-};
-
-void          rtbuf_var_init (void);
-s_rtbuf_var * rtbuf_var_find (const char *name);
-s_rtbuf_var * rtbuf_var_rtbuf_set (const char *name, unsigned i);
-void          rtbuf_var_print (const s_rtbuf_var *v);
-
-#endif
diff --git a/librtbuf/lib.h b/librtbuf/lib.h
new file mode 100644
index 0000000..2d32ea8
--- /dev/null
+++ b/librtbuf/lib.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef RTBUF_LIB_H
+#define RTBUF_LIB_H
+
+#include "defs.h"
+
+#define RTBUF_LIB_MAX 1000
+#define RTBUF_LIB_VER 0x00020001
+
+struct rtbuf_lib_proc_in {
+  const char *name;
+  const char *type;
+  double def;
+  double min;
+  double max;
+  double log_base;
+};
+
+struct rtbuf_lib_proc_out {
+  const char *name;
+  const char *type;
+};
+
+struct rtbuf_lib_proc {
+  const char *name;
+  f_rtbuf_proc *f;
+  f_rtbuf_proc *start;
+  f_rtbuf_proc *stop;
+  s_rtbuf_lib_proc_in *in;    /* inputs, end with NULL */
+  s_rtbuf_lib_proc_out *out;  /* outputs, end with NULL */
+};
+
+struct rtbuf_lib {
+  const char *name;
+  s_rtbuf_proc *proc;
+  void *lib;
+  const char *path;
+};
+
+extern char *g_rtbuf_lib_path[];
+
+extern s_data_alloc g_rtbuf_lib_alloc;
+extern s_rtbuf_lib *g_rtbuf_lib;
+
+void          rtbuf_lib_delete (s_rtbuf_lib *rl);
+int           rtbuf_lib_find (const char *str);
+void          rtbuf_lib_init_ ();
+s_rtbuf_lib * rtbuf_lib_load (const char *path);
+s_rtbuf_lib * rtbuf_lib_new ();
+void          rtbuf_lib_print (const s_rtbuf_lib *lib);
+void          rtbuf_lib_print_long (unsigned int i);
+
+void rtbuf_lib_proc_var_init_proc (s_rtbuf_proc *proc,
+                                   s_rtbuf_lib_proc_in *in);
+void rtbuf_lib_proc_out_init_proc (s_rtbuf_proc *proc,
+                                   s_rtbuf_lib_proc_out *out);
+void rtbuf_lib_proc_init_proc (s_rtbuf_proc *proc, s_rtbuf_lib_proc *x);
+
+#endif
diff --git a/librtbuf/proc.h b/librtbuf/proc.h
new file mode 100644
index 0000000..1650b90
--- /dev/null
+++ b/librtbuf/proc.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef RTBUF_PROC_H
+#define RTBUF_PROC_H
+
+#include "data.h"
+#include "defs.h"
+#include "symbol.h"
+
+struct rtbuf_proc_in {
+  symbol name;
+  const char *name_type;
+  s_rtbuf_type *type;
+  double def;
+  double min;
+  double max;
+  double log_base;
+  unsigned int offset;
+};
+
+struct rtbuf_proc_out {
+  symbol name;
+  const char *name_type;
+  s_rtbuf_type *type;
+  unsigned int offset;
+};
+
+#define RTBUF_PROC_IN_MAX 1024
+#define RTBUF_PROC_OUT_MAX 1024
+
+struct rtbuf_proc {
+  symbol           name;
+  f_rtbuf_proc    *f;
+  f_rtbuf_proc    *start;
+  f_rtbuf_proc    *stop;
+  s_rtbuf_proc_in  in[RTBUF_PROC_IN_MAX];    /* inputs */
+  unsigned int     in_n;                     /* number of inputs */
+  unsigned int     in_bytes;   /* size of input data in bytes */
+  s_rtbuf_proc_out out[RTBUF_PROC_OUT_MAX];  /* outputs */
+  unsigned int     out_n;                    /* number of outputs */
+  unsigned int     out_bytes;  /* size of output data in bytes */
+  s_rtbuf_lib     *lib;        /* the library this procedure comes from */
+  unsigned int     bytes;      /* size of buffer data in bytes */
+  s_data_type      type;
+  s_data_alloc     alloc;
+};
+
+#define RTBUF_PROC_MAX 1024
+extern s_data_alloc  g_rtbuf_proc_alloc;
+extern s_rtbuf_proc *g_rtbuf_proc;
+
+void           rtbuf_proc_init ();
+int            rtbuf_proc_p (s_rtbuf_proc *proc);
+s_rtbuf_proc * rtbuf_proc_new ();
+void           rtbuf_proc_delete (s_rtbuf_proc *proc);
+s_rtbuf_proc * rtbuf_proc_find (const char *x);
+int            rtbuf_proc_out_find (s_rtbuf_proc *proc,
+                                    const char *name);
+void           rtbuf_proc_print (s_rtbuf_proc *proc);
+
+#endif
diff --git a/librtbuf/queue.h b/librtbuf/queue.h
new file mode 100644
index 0000000..fd28803
--- /dev/null
+++ b/librtbuf/queue.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef QUEUE_H
+#define QUEUE_H
+
+/* static queue */
+
+#define QUEUE_TYPE(type, size)  \
+  type ## _queue_ ## size
+
+#define QUEUE(type, size)          \
+  struct QUEUE_TYPE(type, size) {  \
+    unsigned int length;           \
+    unsigned int read_index;       \
+    unsigned int write_index;      \
+    type item[size];               \
+  }
+
+#define S_QUEUE_TYPE(type, size)  \
+  s_ ## QUEUE_TYPE(type, size)
+
+#define QUEUE_METHOD(type, size, method)  \
+  QUEUE_TYPE(type, size) ## _ ## method
+
+#define DEFINE_QUEUE(type, size)                            \
+  typedef QUEUE(type, size) S_QUEUE_TYPE(type, size);       \
+  static void QUEUE_METHOD(type, size, init)                \
+    (S_QUEUE_TYPE(type, size) *q)                           \
+  {                                                         \
+    bzero(q, sizeof(q));                                    \
+  }                                                         \
+  static void QUEUE_METHOD(type, size, free)                \
+    (S_QUEUE_TYPE(type, size) *q)                           \
+  {                                                         \
+    bzero(q, sizeof(q));                                    \
+  }                                                         \
+  static int QUEUE_METHOD(type, size, enqueue)              \
+    (S_QUEUE_TYPE(type, size) *q, type item)                \
+  {                                                         \
+    if (q->length < size) {                                 \
+      unsigned int write_index = q->write_index;            \
+      q->write_index = (q->write_index + 1) % size;         \
+      q->item[write_index] = item;                          \
+      q->length++;                                          \
+      return 0;                                             \
+    }                                                       \
+    return -1;                                              \
+  }                                                         \
+  static int QUEUE_METHOD(type, size, dequeue)              \
+    (S_QUEUE_TYPE(type, size) *q, type *ptr)                \
+  {                                                         \
+    if (q->length > 0) {                                    \
+      unsigned int read_index = q->read_index;              \
+      q->read_index = (read_index + 1) % size;              \
+      *ptr = q->item[read_index];                           \
+      q->length--;                                          \
+      return 0;                                             \
+    }                                                       \
+    return -1;                                              \
+  }
+
+#endif
diff --git a/librtbuf/rtbuf.c b/librtbuf/rtbuf.c
index 9354139..e9fb1b4 100644
--- a/librtbuf/rtbuf.c
+++ b/librtbuf/rtbuf.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018,2020 Thomas de Grivel <thoxdg@gmail.com> +33614550127
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -19,11 +19,11 @@
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
-#include <rtbuf/data.h>
-#include <rtbuf/rtbuf.h>
-#include <rtbuf/lib.h>
-#include <rtbuf/var.h>
-#include <rtbuf/symbol.h>
+#include "data.h"
+#include "rtbuf.h"
+#include "lib.h"
+#include "var.h"
+#include "symbol.h"
 
 s_data_type   g_rtbuf_type = {
   sizeof(s_rtbuf) * 8,
@@ -262,7 +262,7 @@ int rtbuf_data_set (s_rtbuf *rtb, symbol name, void *value,
   if (out_i >= 0) {
     s_rtbuf_proc_out *out = &rtb->proc->out[out_i];
     if (out->type->t.bits == size * 8) {
-      void *data = rtb->data + out->offset;
+      void *data = (char*) rtb->data + out->offset;
       memcpy(data, value, size);
       return size;
     }
@@ -536,7 +536,7 @@ int rtbuf_out_int (s_rtbuf *rtb, unsigned int out, int default_value)
   o = &rtb->proc->out[out];
   assert(o->type);
   if (o->type->t.bits >= sizeof(int) * 8) {
-    int *i = (int*)(rtb->data + o->offset);
+    int *i = (int*)((char*) rtb->data + o->offset);
     return *i;
   }
   return default_value;
@@ -637,6 +637,6 @@ double * rtbuf_in_unbound_value (s_rtbuf *rtb, unsigned int in)
   assert(in < rtb->proc->in_n);
   offset = rtb->proc->in[in].offset;
   assert(offset < rtb->proc->bytes);
-  p = rtb->data + offset;
+  p = (char*) rtb->data + offset;
   return (double*) p;
 }
diff --git a/librtbuf/rtbuf.h b/librtbuf/rtbuf.h
new file mode 100644
index 0000000..e7e6c66
--- /dev/null
+++ b/librtbuf/rtbuf.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef RTBUF_H
+#define RTBUF_H
+
+#include "data.h"
+#include "defs.h"
+#include "type.h"
+#include "proc.h"
+
+#define RTBUF_SORT     0x0001
+#define RTBUF_DELETE   0x0002
+#define RTBUF_NEW      0x0004
+#define RTBUF_READY    0x0008
+
+struct rtbuf_binding
+{
+  int rtb;
+  unsigned int out;
+};
+
+struct rtbuf
+{
+  void           *data;
+  unsigned int    flags;
+  s_rtbuf_proc   *proc;
+  unsigned int    refc;
+  s_rtbuf_binding in[RTBUF_PROC_IN_MAX];
+  unsigned int    in_n;
+  void           *user_ptr;
+};
+
+#define RTBUF_MAX         10000
+#define RTBUF_INSTANCE_MAX  100
+
+extern s_data_alloc g_rtbuf_alloc;
+extern s_rtbuf     *g_rtbuf;
+extern int          g_rtbuf_run;
+
+typedef void (*f_rtbuf_new_cb) (s_rtbuf *rtb);
+typedef void (*f_rtbuf_delete_cb) (s_rtbuf *rtb);
+typedef void (*f_rtbuf_bind_cb) (s_rtbuf *src, unsigned int out,
+                                 s_rtbuf *dest, unsigned int in);
+typedef void (*f_rtbuf_unbind_cb) (s_rtbuf *src, unsigned int out,
+                                   s_rtbuf *dest, unsigned int in);
+
+extern f_rtbuf_new_cb    g_rtbuf_new_cb;
+extern f_rtbuf_delete_cb g_rtbuf_delete_cb;
+extern f_rtbuf_bind_cb   g_rtbuf_bind_cb;
+extern f_rtbuf_unbind_cb g_rtbuf_unbind_cb;
+
+int   librtbuf_init ();
+
+int   rtbuf_err (const char *msg);
+int   rtbuf_new (s_rtbuf_proc *rp);
+int   rtbuf_new_ptr (s_rtbuf_proc *rp, void *user_ptr);
+void  rtbuf_in_unbind (s_rtbuf *rtb, unsigned int in);
+void  rtbuf_out_unbind (s_rtbuf *rtb, unsigned int out);
+void  rtbuf_unbind_all (s_rtbuf *rtb);
+void  rtbuf_delete (s_rtbuf *rtb);
+int   rtbuf_clone (s_rtbuf *rtb);
+int   rtbuf_find (symbol sym);
+int   rtbuf_in_find (s_rtbuf *rtb, const char *x);
+void  rtbuf_bind (unsigned int src, unsigned int out,
+                  s_rtbuf *dest, unsigned int in);
+int   rtbuf_out_find (s_rtbuf *rtb, symbol sym);
+int   rtbuf_data_set (s_rtbuf *rtb, symbol name, void *value,
+                      unsigned int size);
+void  rtbuf_sort ();
+int   rtbuf_start ();
+int   rtbuf_run ();
+void  rtbuf_stop ();
+void  rtbuf_print (unsigned int i);
+void  rtbuf_print_long (unsigned int i);
+void  rtbuf_print_sorted ();
+
+int  rtbuf_out_int (s_rtbuf *rtb, unsigned int out, int default_value);
+
+double * rtbuf_in_unbound_value (s_rtbuf *rtb, unsigned int in);
+
+double min (double a, double b);
+double max (double a, double b);
+double clamp (double inf, double x, double sup);
+
+#endif /* RTBUF_H */
diff --git a/librtbuf/rtbuf_fun.c b/librtbuf/rtbuf_fun.c
deleted file mode 100644
index ea103e1..0000000
--- a/librtbuf/rtbuf_fun.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <strings.h>
-#include "data.h"
-#include "rtbuf.h"
-#include "symbol.h"
-
-s_data_type g_rtbuf_proc_type = {
-  sizeof(s_rtbuf_proc) * 8,
-  DATA_TYPE_BITS
-};
-s_data_alloc g_rtbuf_proc_alloc;
-s_rtbuf_proc *g_rtbuf_proc;
-
-void rtbuf_proc_init ()
-{
-  data_alloc_init(&g_rtbuf_proc_alloc, &g_rtbuf_proc_type,
-                  RTBUF_PROC_MAX, 0, 0);
-}
-
-int rtbuf_proc_p (s_rtbuf_proc *proc)
-{
-  return proc && proc->name;
-}
-
-s_rtbuf_proc * rtbuf_proc_new ()
-{
-  s_rtbuf_proc *rf = data_new(&g_rtbuf_proc_alloc);
-  return rf;
-}
-
-void rtbuf_proc_delete (s_rtbuf_proc *proc)
-{
-  assert(proc);
-  data_delete(&g_rtbuf_proc_alloc, proc);
-}
-
-s_rtbuf_proc * rtbuf_proc_find (const char *x)
-{
-  const char *sym = symbol_find(x);
-  if (sym) {
-    unsigned int i = 0;
-    unsigned int n = g_rtbuf_alloc.n - g_rtbuf_alloc.free_n;
-    while (i < g_rtbuf_proc_alloc.n && n > 0) {
-      if (rtbuf_proc_p(&g_rtbuf_proc[i])) {
-        if (sym == g_rtbuf_proc[i].name)
-          return &g_rtbuf_proc[i];
-        n--;
-      }
-      i++;
-    }
-  }
-  return 0;
-}
-
-int rtbuf_proc_out_find (s_rtbuf_proc *proc, const char *x)
-{
-  symbol sym;
-  if (x && '0' <= x[0] && x[0] <= '9') {
-    int i = atoi(x);
-    if (0 <= i && (unsigned int) i < proc->out_n)
-      return i;
-  }
-  if ((sym = symbol_find(x))) {
-    unsigned int i = 0;
-    while (i < proc->out_n) {
-      if (sym == proc->out[i].name)
-        return i;
-      i++;
-    }
-  }
-  return -1;
-}
-
-void rtbuf_proc_print (s_rtbuf_proc *proc)
-{
-  unsigned int i = 0;
-  printf("#<proc %i %s (", proc->lib_proc, proc->name);
-  while (i < proc->var_n) {
-    if (i > 0)
-      fputs(" ", stdout);
-    fputs(proc->var[i].name, stdout);
-    fputs(":", stdout);
-    fputs(proc->var[i].type->name, stdout);
-    i++;
-  }
-  printf(") -> (");
-  i = 0;
-  while (i < proc->out_n) {
-    if (i > 0)
-      fputs(" ", stdout);
-    fputs(proc->out[i].name, stdout);
-    fputs(":", stdout);
-    fputs(proc->out[i].type->name, stdout);
-    i++;
-  }
-  fputs(")>", stdout);
-}
diff --git a/librtbuf/rtbuf_lib.c b/librtbuf/rtbuf_lib.c
index ab21c4f..6d74b20 100644
--- a/librtbuf/rtbuf_lib.c
+++ b/librtbuf/rtbuf_lib.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018,2020 Thomas de Grivel <thoxdg@gmail.com>
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -21,10 +21,9 @@
 #include <string.h>
 #include <strings.h>
 #include <unistd.h>
-
-#include <rtbuf/rtbuf.h>
-#include <rtbuf/lib.h>
-#include <rtbuf/symbol.h>
+#include "rtbuf.h"
+#include "lib.h"
+#include "symbol.h"
 
 s_data_type  g_rtbuf_lib_type = {
   sizeof(s_rtbuf_lib) * 8,
@@ -281,7 +280,7 @@ void rtbuf_lib_print (const s_rtbuf_lib *lib)
       (i = lib - g_rtbuf_lib) < RTBUF_LIB_MAX)
     printf("#<lib %i %s>\n", i, lib->name);
   else
-    printf("#<lib %p %s>\n", lib, lib->name);
+    printf("#<lib %p %s>\n", (void*) lib, lib->name);
 }
 
 void rtbuf_lib_print_long (unsigned int i)
diff --git a/librtbuf/rtbuf_proc.c b/librtbuf/rtbuf_proc.c
index f3d98dd..eb3d8eb 100644
--- a/librtbuf/rtbuf_proc.c
+++ b/librtbuf/rtbuf_proc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com>
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -18,9 +18,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <strings.h>
-#include <rtbuf/data.h>
-#include <rtbuf/rtbuf.h>
-#include <rtbuf/symbol.h>
+#include "data.h"
+#include "rtbuf.h"
+#include "symbol.h"
 
 s_data_type g_rtbuf_proc_type = {
   sizeof(s_rtbuf_proc) * 8,
diff --git a/librtbuf/rtbuf_type.c b/librtbuf/rtbuf_type.c
index 8bfb46c..5e24911 100644
--- a/librtbuf/rtbuf_type.c
+++ b/librtbuf/rtbuf_type.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -19,8 +19,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
-#include <rtbuf/type.h>
-#include <rtbuf/symbol.h>
+#include "type.h"
+#include "symbol.h"
 
 extern int snprintf (char *, size_t, const char *, ...);
 
diff --git a/librtbuf/rtbuf_var.c b/librtbuf/rtbuf_var.c
index 5be53f3..1eaeb45 100644
--- a/librtbuf/rtbuf_var.c
+++ b/librtbuf/rtbuf_var.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com>
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -16,9 +16,9 @@
 
 #include <assert.h>
 #include <stdio.h>
-#include <rtbuf/data.h>
-#include <rtbuf/var.h>
-#include <rtbuf/rtbuf.h>
+#include "data.h"
+#include "var.h"
+#include "rtbuf.h"
 
 s_data_type  g_rtbuf_var_type = {
   sizeof(s_rtbuf_var) * 8,
diff --git a/librtbuf/symbol.c b/librtbuf/symbol.c
index 6cf3001..17fae96 100644
--- a/librtbuf/symbol.c
+++ b/librtbuf/symbol.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 Thomas de Grivel <thoxdg@gmail.com> +33614550127
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -18,7 +18,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <strings.h>
-#include <rtbuf/symbol.h>
+#include "symbol.h"
 
 char         g_str_start[STRING_MAX];
 char        *g_str = g_str_start;
diff --git a/librtbuf/symbol.h b/librtbuf/symbol.h
new file mode 100644
index 0000000..0a09cd4
--- /dev/null
+++ b/librtbuf/symbol.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef SYMBOL_H
+#define SYMBOL_H
+
+#include <sys/types.h>
+
+typedef const char *symbol;
+
+#define STRING_MAX 65536
+extern char         g_str_start[STRING_MAX];
+extern char        *g_str;
+extern unsigned int g_str_n;
+extern unsigned int g_str_last;
+
+char * g_str_append (const char *str, size_t len);
+void   g_str_reset (char *head);
+
+#define SYMBOL_MAX 32768
+extern symbol       g_symbols[SYMBOL_MAX];
+extern unsigned int g_symbols_n;
+
+void   symbols_init ();
+symbol symbol_new (symbol name);
+void   symbol_delete (symbol sym);
+symbol symbol_find (symbol name);
+symbol symbol_intern (const char *name);
+
+#endif
diff --git a/librtbuf/type.h b/librtbuf/type.h
new file mode 100644
index 0000000..3c3713b
--- /dev/null
+++ b/librtbuf/type.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef RTBUF_TYPE_H
+#define RTBUF_TYPE_H
+
+#include "data.h"
+#include "defs.h"
+#include "symbol.h"
+
+struct rtbuf_type {
+  symbol       name;
+  s_data_type  t;
+};
+
+#define RTBUF_TYPE_MAX 1024
+
+void           rtbuf_type_init ();
+s_rtbuf_type * rtbuf_type_new (const char *name,
+                               unsigned int size);
+void           rtbuf_type_delete (s_rtbuf_type *rt);
+s_rtbuf_type * rtbuf_type_find (symbol name);
+s_rtbuf_type * rtbuf_type_define (const char *name,
+                                  unsigned int size);
+s_rtbuf_type * rtbuf_type (const char *name);
+s_rtbuf_type * rtbuf_type_array (const char *element_type,
+                                 unsigned int size);
+
+#define RTBUF_TYPE_CHAR_ARRAY(size) ("char[" #size "]")
+#define RTBUF_TYPE_SHORT_ARRAY(size) ("short[" #size "]")
+#define RTBUF_TYPE_DOUBLE_ARRAY(size) ("double[" #size "]")
+
+#endif
diff --git a/librtbuf/var.h b/librtbuf/var.h
new file mode 100644
index 0000000..5e7ce75
--- /dev/null
+++ b/librtbuf/var.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018-2021 Thomas de Grivel <thoxdg@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef RTBUF_VAR_H
+#define RTBUF_VAR_H
+
+#include "defs.h"
+
+#define RTBUF_VAR_MAX 1000
+
+struct rtbuf_var {
+  e_rtbuf_var_type type;
+  const char *name;
+  unsigned index;
+};
+
+void          rtbuf_var_init (void);
+s_rtbuf_var * rtbuf_var_find (const char *name);
+s_rtbuf_var * rtbuf_var_rtbuf_set (const char *name, unsigned i);
+void          rtbuf_var_print (const s_rtbuf_var *v);
+
+#endif