Add first version

Add first version implementing single string descriptor retrieval,
parsing and output.

.gitignore

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+*.o
+.deps
+/aclocal.m4
+/autom4te.cache
+/config.h
+/config.h.in
+/config.log
+/config.status
+/configure
+/depcomp
+/huion-probe
+/install-sh
+/missing
+/stamp-h1
+Makefile
+Makefile.in

Makefile.am

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+# Copyright (C) 2013 Nikolai Kondrashov
+#
+# This file is part of huion-probe.
+#
+# Huion-probe is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# Huion-probe is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with huion-probe; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+dist_noinst_SCRIPTS = bootstrap
+dist_doc_DATA = README.md
+bin_PROGRAMS = huion-probe
+huion_probe_SOURCES = huion-probe.c

README.md

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+Huion-probe
+===========
+
+Huion-probe is an utility retrieving and displaying parameters of Huion
+graphics tablets, while at the same time enabling proprietary mode.
+
+Installation
+------------
+
+Requirements:
+
+* libusb >= 1.0
+
+Libusb development packages are usually named `libusb-dev` or `libusb-devel`.
+
+To build from a distribution tarball the usual `./configure && make`
+is sufficient.
+
+To build from the Git tree autotools are required and `./bootstrap &&
+./configure && make` is sufficient.
+
+To install huion-probe, use `make install`.
+
+Usage
+-----
+
+Huion-probe accepts two arguments: bus number and device address. You can find
+them in `lsusb` output by looking for a device with vendor ID 256c and product
+ID 006e.
+
+For example, in this `lsusb` output:
+
+    Bus 001 Device 003: ID 256c:006e  
+    Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+    Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+    Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+    Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+
+The first line corresponds to a Huion tablet, and so its bus number is 1,
+device address is 3 and you probe it like this:
+
+    huion-probe 1 3
+
+The output will be something like this:
+
+    RAW
+
+     00 7D 20 4E 03 00 FF 07 A0 0F 08 00 00 00 00 00
+
+    DECODED
+
+             Max X: 32000
+             Max Y: 20000
+      Max pressure: 2047
+        Resolution: 4000

bootstrap

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+#!/bin/bash
+#
+# Copyright (c) 2013 Nikolai Kondrashov
+#
+# This file is part of huion-probe.
+#
+# Huion-probe is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# Huion-probe is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with huion-probe; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+# Fail on any error
+set -e
+
+aclocal
+autoheader
+automake --add-missing --copy
+autoconf

configure.ac

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+#
+# Copyright (C) 2013 Nikolai Kondrashov
+#
+# This file is part of huion-probe.
+#
+# Usbhid-dump is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# Usbhid-dump is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with usbhid-dump; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ(2.61)
+AC_INIT([huion-probe], [1])
+AM_INIT_AUTOMAKE([1.9 -Wall foreign])
+AM_MAINTAINER_MODE
+AC_CONFIG_HEADER([config.h])
+
+# Check for programs.
+AC_PROG_CC
+AC_PROG_INSTALL
+
+# Check for libraries.
+PKG_CHECK_MODULES(LIBUSB, libusb-1.0 >= 1.0.0)
+CFLAGS="$CFLAGS $LIBUSB_CFLAGS"
+LIBS="$LIBS $LIBUSB_LIBS"
+
+# Check for features
+AC_ARG_ENABLE(
+    debug,
+    AS_HELP_STRING([--enable-debug], [enable debugging features]),
+    [], [enable_debug="no"])
+
+# Output features to preprocessor and compiler
+if test "$enable_debug" = "yes"; then
+    CPPFLAGS="$CPPFLAGS -UNDEBUG"
+    CFLAGS="$CFLAGS -Wall -Wextra -Werror -g -O0"
+fi
+
+# Check for library functions.
+AC_CHECK_FUNCS(libusb_strerror)
+
+# Output
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT