Initial load of utouch-framev1.0.0

Compiles and runs on mtdev. ABI proof.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

18 files changed, 1912 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cf601fa
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,81 @@
+#
+#               X.Org module default exclusion patterns
+#               The next section if for module specific patterns
+#
+#       Do not edit the following section
+#       GNU Build System (Autotools)
+aclocal.m4
+autom4te.cache/
+autoscan.log
+ChangeLog
+compile
+config.guess
+config.h
+config.h.in
+config.log
+config-ml.in
+config.py
+config.status
+config.status.lineno
+config.sub
+configure
+configure.scan
+depcomp
+.deps/
+install-sh
+.libs/
+libtool
+libtool.m4
+ltmain.sh
+lt~obsolete.m4
+ltoptions.m4
+ltsugar.m4
+ltversion.m4
+Makefile
+Makefile.in
+mdate-sh
+missing
+mkinstalldirs
+*.pc
+py-compile
+stamp-h?
+symlink-tree
+texinfo.tex
+ylwrap
+
+#       Do not edit the following section
+#       Edit Compile Debug Document Distribute
+*~
+*.[0-9]
+*.[0-9]x
+*.bak
+*.bin
+core
+*.dll
+*.exe
+*-ISO*.bdf
+*-JIS*.bdf
+*-KOI8*.bdf
+*.kld
+*.ko
+*.ko.cmd
+*.lai
+*.l[oa]
+*.[oa]
+*.obj
+*.patch
+*.so
+*.pcf.gz
+*.pdb
+*.tar.bz2
+*.tar.gz
+#
+#               Add & Override patterns for mtdev
+#
+#               Edit the following section as needed
+# For example, !report.pc overrides *.pc. See 'man gitignore'
+#
+.bzrignore
+.bzr
+patches
+tools/utouch-frame-test-mtdev
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..cf2bee5
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,672 @@
+utouch-frame - Touch Frame Library (GPLv3 license)
+
+    Copyright (C) 2010 Canonical Ltd.
+    Copyright (C) 2010 Henrik Rydberg <rydberg@bitmath.org>
+
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+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program 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 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..187d071
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,25 @@
+utouch-frame - Touch Frame Library
+
+To build, you need to have the autoconf, libtool, libutouch-evemu-dev
+and mtdev-dev packages installed. Then, do
+
+   ./autogen.sh
+   ./configure
+   make
+
+To test the touch properties of an MT device at /dev/input/eventX, do
+
+   sudo ./test/utouch-frame-test /dev/input/eventX
+
+You should be able to see touch events in the terminal. After five
+seconds of inactivity, the program exits.
+
+To install utouch-frame, do
+
+   sudo make install
+
+By default, utouch-frame installs to /usr/local. To change, use the --prefix
+configure option.
+
+Enjoy,
+Henrik
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..6a94173
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,14 @@
+SUBDIRS = src tools test
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = utouch-frame.pc
+
+INCLUDES = $(top_srcdir)/include/
+
+.PHONY: ChangeLog INSTALL
+INSTALL:
+        $(INSTALL_CMD)
+ChangeLog:
+        bzr log > ChangeLog
+
+dist-hook: ChangeLog INSTALL
diff --git a/README b/README
new file mode 100644
index 0000000..340f839
--- /dev/null
+++ b/README
@@ -0,0 +1,7 @@
+utouch-frame - Touch Frame Library
+
+This tree handles the buildup and synchronization of a set of
+simultaneous touches. The library is input agnostic.
+
+Enjoy,
+Henrik
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..a08311b
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+srcdir=`dirname $0`
+test -z "$srcdir" && srcdir=.
+
+ORIGDIR=`pwd`
+cd $srcdir
+
+autoreconf -v --install || exit 1
+cd $ORIGDIR || exit $?
+
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..0ff758f
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,33 @@
+# Initialize Autoconf
+AC_PREREQ([2.60])
+AC_INIT([Touch Frame Library],
+        [1.0.0],
+        [],
+        [utouch-frame])
+AC_CONFIG_SRCDIR([Makefile.am])
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_AUX_DIR([config-aux])
+
+# Initialize Automake
+AM_INIT_AUTOMAKE([foreign dist-bzip2])
+AM_MAINTAINER_MODE
+
+LIB_VERSION=1:0:0
+AC_SUBST([LIB_VERSION])
+
+# Initialize libtool
+AC_PROG_LIBTOOL
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_INSTALL
+
+PKG_CHECK_MODULES([MTDEV], [mtdev >= 1.1])
+PKG_CHECK_MODULES([EVEMU], [utouch-evemu >= 1.0])
+
+AC_CONFIG_FILES([Makefile
+                 src/Makefile
+                 test/Makefile
+                 tools/Makefile
+                 utouch-frame.pc])
+AC_OUTPUT
diff --git a/docs/event-semantics.txt b/docs/event-semantics.txt
new file mode 100644
index 0000000..87afe4e
--- /dev/null
+++ b/docs/event-semantics.txt
@@ -0,0 +1,31 @@
+FRAME
+
+The touch frame, consisting of a set of simultaneous contacts.
+
+CONTACT
+
+The current MT contact configuration. Changes whenever an id changes.
+
+TOUCH
+
+The current touch configuration. Changes whenever the number of contacts
+changes. A touch frame is well-defined a time T after the last
+configuration change. This allows for simultaneous touches being
+handled. It also allows for a very quick change of one finger to
+another. Such an action changes the CONTACT state, but it does not change
+the TOUCH state.
+
+DRAG/PINCH/ROTATE
+
+A transformation based on the touch frame.
+
+GESTURES
+
+Two creation points may be grouped if they are close in space-time, and
+they are always close within the same controlling entity. There can be only
+one controlling entity per point, and that decision is made upon
+creation. The window manager is a controlling entity. Ambiguities can occur
+between close points, and are resolved either by state rule or by
+priority. Relaxing the time closeness criteria has no effect within a
+controlling entity, but creates a larger set of ambiguous and undesired
+groupings, which is considered inferior.
diff --git a/include/utouch/frame-mtdev.h b/include/utouch/frame-mtdev.h
new file mode 100644
index 0000000..f3957b9
--- /dev/null
+++ b/include/utouch/frame-mtdev.h
@@ -0,0 +1,39 @@
+/*****************************************************************************
+ *
+ * utouch-frame - Touch Frame Library
+ *
+ * Copyright (C) 2010-2011 Canonical Ltd.
+ *
+ * This program 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 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ****************************************************************************/
+
+#ifndef _UTOUCH_FRAME_MTDEV_H
+#define _UTOUCH_FRAME_MTDEV_H
+
+#define MTDEV_NO_LEGACY_API
+
+#include <utouch/frame.h>
+#include <evemu.h>
+#include <mtdev.h>
+
+int utouch_frame_is_supported_mtdev(const struct evemu_device *dev);
+
+int utouch_frame_init_mtdev(utouch_frame_handle fh,
+                            const struct evemu_device *dev);
+
+const struct utouch_frame *
+utouch_frame_pump_mtdev(utouch_frame_handle fh, const struct input_event *ev);
+
+#endif
diff --git a/include/utouch/frame.h b/include/utouch/frame.h
new file mode 100644
index 0000000..08e4e26
--- /dev/null
+++ b/include/utouch/frame.h
@@ -0,0 +1,250 @@
+/*****************************************************************************
+ *
+ * utouch-frame - Touch Frame Library
+ *
+ * Copyright (C) 2010-2011 Canonical Ltd.
+ *
+ * This program 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 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ****************************************************************************/
+
+#ifndef _UTOUCH_FRAME_H
+#define _UTOUCH_FRAME_H
+
+#include <stdint.h>
+
+#define UTOUCH_FRAME_VERSION    0x00001000
+
+/**
+ * struct utouch_surface - device surface details
+ * @needs_pointer: device needs a screen pointer to function
+ * @is_direct: surface is a direct device (e.g. touchscreen)
+ * @is_buttonpad: surface has button(s) under it
+ * @is_semi_mt: surface detects bounding rectangle only
+ * @use_touch_major: device uses major axis for contact modulation
+ * @use_touch_minor: device uses minor axis for contact modulation
+ * @use_width_major: device uses approaching major axis for contact modulation
+ * @use_width_minor: device uses approaching minor axis for contact modulation
+ * @use_orientation: device uses ellipse orientation for contact modulation
+ * @use_pressure: device uses pressure for contact modulation
+ * @use_distance: device uses hover distance
+ * @phys_width: physical width in millimeters (mm)
+ * @phys_height: physical height in millimeters (mm)
+ * @phys_pressure: maximal physical pressure (N/cm^2)
+ * @min_x: minimum horizontal coordinate value
+ * @min_y: minimum vertical coordinate value
+ * @max_x: maximum horizontal coordinate value
+ * @max_y: maximum vertical coordinate value
+ * @max_pressure: maximum pressure coordinate value
+ *
+ * Device properties and touch surface details. Later versions of this
+ * struct may grow in size, but will remain binary compatible with
+ * older versions.
+ */
+struct utouch_surface {
+        int needs_pointer;
+        int is_direct;
+        int is_buttonpad;
+        int is_semi_mt;
+        int use_touch_major;
+        int use_touch_minor;
+        int use_width_major;
+        int use_width_minor;
+        int use_orientation;
+        int use_pressure;
+        int use_distance;
+        float phys_width;
+        float phys_height;
+        float phys_pressure;
+        float min_x;
+        float min_y;
+        float max_x;
+        float max_y;
+        float max_pressure;
+};
+
+#define UTOUCH_TOOL_FINGER      0
+#define UTOUCH_TOOL_PEN         1
+
+/**
+ * struct utouch_contact - surface contact details
+ * @prev: pointer to same slot of previous frame
+ * @active: currently in use
+ * @slot: slot occupied by this contact
+ * @id: unique id of this contact
+ * @tool_type: the tool type of this contact
+ * @x: horizontal center position coordinate (surface units)
+ * @y: vertical center position coordinate (surface units)
+ * @touch_major: major axis of contact (surface units)
+ * @touch_minor: minor axis of contact (surface units)
+ * @width_major: major axis of approaching contact (surface units)
+ * @width_minor: minor axis of approaching contact (surface units)
+ * @orientation: direction of ellipse (left: -Pi/2, up: 0, right: Pi/2)
+ * @pressure: pressure of contact (pressure units)
+ * @distance: distance of contact (surface units)
+ *
+ * Surface contact details. Later versions of this struct may grow in
+ * size, but will remain binary compatible with older versions.
+ *
+ * Contact structures are connected into one ring per slot. The
+ * previous contact pointers are ABI agnostic, owned by the engine,
+ * and have engine scope.
+ */
+struct utouch_contact {
+        const struct utouch_contact *prev;
+        int active;
+        int slot;
+        int id;
+        int tool_type;
+        float x;
+        float y;
+        float touch_major;
+        float touch_minor;
+        float width_major;
+        float width_minor;
+        float orientation;
+        float pressure;
+        float distance;
+};
+
+/* time in milliseconds */
+typedef uint64_t utouch_frame_time_t;
+
+/* the frame engine handle */
+typedef struct utouch_frame_engine *utouch_frame_handle;
+
+/**
+ * struct utouch_frame - emitted frame details
+ * @prev: pointer to previous frame
+ * @sequence_id: frame sequence number
+ * @revision: changes whenever the contact count changes
+ * @slot_revision: changes whenever the slot id array change
+ * @num_active: the number of contacts in the active array
+ * @time: time of frame completion (ms)
+ * @mod_time: time of last contact count change (ms)
+ * @slot_mod_time: time of last slot id array change (ms)
+ * @active: the array of active contacts
+ *
+ * Contact frame details. Later versions of this struct may grow in
+ * size, but will remain binary compatible with older versions.
+ *
+ * Frames are connected into a ring. The previous frame pointer is ABI
+ * agnostic, owned by the engine, and has engine scope.
+ */
+struct utouch_frame {
+        const struct utouch_frame *prev;
+        unsigned int sequence_id;
+        unsigned int revision;
+        unsigned int slot_revision;
+        unsigned int num_active;
+        utouch_frame_time_t time;
+        utouch_frame_time_t mod_time;
+        utouch_frame_time_t slot_mod_time;
+        struct utouch_contact **active;
+        struct utouch_contact **slots;
+};
+
+/**
+ * utouch_frame_get_version - get library abi version
+ *
+ * Returns the version of the library, which may be different
+ * from the api version of the compiled user program.
+ */
+unsigned int utouch_frame_get_version(void);
+
+utouch_frame_handle utouch_frame_new_engine_raw(unsigned int num_frames,
+                                                unsigned int num_slots,
+                                                unsigned int frame_rate,
+                                                unsigned int version,
+                                                unsigned int surface_size,
+                                                unsigned int frame_size,
+                                                unsigned int slot_size);
+
+/**
+ * utouch_frame_new_engine - allocate a new frame engine
+ * @num_frames: number of frames in cyclic buffer
+ * @num_slots: maximum number of slots per frame
+ * @frame_rate: maximum frame rate (frames/s)
+ *
+ * Allocates memory, initializes the internal engine and returns a
+ * handle to it. A rate of 100 frames per second is normal.
+ */
+#define utouch_frame_new_engine(num_frames, num_slots, frame_rate)      \
+        utouch_frame_new_engine_raw(num_frames,                         \
+                                    num_slots,                          \
+                                    frame_rate,                         \
+                                    UTOUCH_FRAME_VERSION,               \
+                                    sizeof(struct utouch_surface),      \
+                                    sizeof(struct utouch_frame),        \
+                                    sizeof(struct utouch_contact))
+
+/**
+ * utouch_frame_delete_engine - deallocate a frame engine
+ * @fh: frame engine in use
+ *
+ * Deallocates all memory associated with the engine.
+ */
+void utouch_frame_delete_engine(utouch_frame_handle fh);
+
+/**
+ * utouch_frame_get_surface - get the mutable device surface information
+ * @fh: the frame engine in use
+ *
+ * Returns a pointer to the mutable device surface information. It is
+ * preferrably set up by one of the input handlers. The pointer is ABI
+ * agnostic, has frame engine scope, and is owned by the engine.
+ */
+struct utouch_surface *utouch_frame_get_surface(utouch_frame_handle fh);
+
+/**
+ * utouch_frame_get_current_slot - get the current mutable slot contact
+ * @fh: the frame engine in use
+ *
+ * Returns a pointer to the contact current being modified. The
+ * pointer is ABI agnostic, has frame engine scope, and is owned by
+ * the engine.
+ */
+struct utouch_contact *utouch_frame_get_current_slot(utouch_frame_handle fh);
+
+/**
+ * utouch_frame_set_current_slot - set the current slot number
+ * @fh: the frame engine in use
+ * @slot: the slot number
+ *
+ * Sets the slot currently being modified. Returns zero if successful,
+ * negative error otherwise.
+ */
+int utouch_frame_set_current_slot(utouch_frame_handle fh, int slot);
+
+/**
+ * utouch_frame_sync - synchronize and return new frame
+ * @fh: the frame engine in use
+ * @time: the frame synchronization time (ms)
+ *
+ * Scans through the updates, and in case the changes make up a new
+ * frame, returns the updated frame.
+ *
+ * If time is zero, a time-of-receipt will be used instead.
+ *
+ * The frame returned is always the next in the cyclic list, and
+ * always points back at the previous frame returned by this function.
+ *
+ * The returned pointer is ABI agnostic and owned by the frame
+ * engine. It may very well be zero if there is nothing to report or
+ * if the frame rate is limited.
+ */
+const struct utouch_frame *utouch_frame_sync(utouch_frame_handle fh,
+                                             utouch_frame_time_t time);
+
+#endif
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..aa11733
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,21 @@
+lib_LTLIBRARIES = libutouch-frame.la
+
+libutouch_frame_la_LDFLAGS = \
+        -version-info @LIB_VERSION@ \
+        -lm \
+        $(EVEMU_LIBS)
+        $(MTDEV_LIBS)
+
+libutouch_frame_la_SOURCES = \
+        frame-impl.h \
+        frame.c \
+        frame-mtdev.c
+
+AM_CFLAGS = $(CWARNFLAGS)
+
+INCLUDES = -I$(top_srcdir)/include/
+
+libutouch_frameincludedir = $(includedir)/utouch
+libutouch_frameinclude_HEADERS = \
+        $(top_srcdir)/include/utouch/frame.h \
+        $(top_srcdir)/include/utouch/frame-mtdev.h
diff --git a/src/frame-impl.h b/src/frame-impl.h
new file mode 100644
index 0000000..c31f7da
--- /dev/null
+++ b/src/frame-impl.h
@@ -0,0 +1,18 @@
+#ifndef _FRAME_IMPL_H
+#define _FRAME_IMPL_H
+
+#include <utouch/frame.h>
+
+struct utouch_frame_engine {
+        int num_frames;
+        int num_slots;
+        int hold_ms;
+        int frame;
+        int slot;
+        float max_orient;
+        struct utouch_surface *surface;
+        struct utouch_frame **frames;
+        struct utouch_frame *next;
+};
+
+#endif
diff --git a/src/frame-mtdev.c b/src/frame-mtdev.c
new file mode 100644
index 0000000..ed5dc9e
--- /dev/null
+++ b/src/frame-mtdev.c
@@ -0,0 +1,189 @@
+/*****************************************************************************
+ *
+ * utouch-frame - Touch Frame Library
+ *
+ * Copyright (C) 2010 Canonical Ltd.
+ *
+ * This program 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 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ****************************************************************************/
+
+#include <utouch/frame-mtdev.h>
+#include "frame-impl.h"
+#include <linux/input.h>
+#include <errno.h>
+#include <math.h>
+
+int utouch_frame_is_supported_mtdev(const struct evemu_device *dev)
+{
+
+        /* only support pure absolute devices at this time */
+        if (evemu_has_event(dev, EV_REL, REL_X) ||
+            evemu_has_event(dev, EV_REL, REL_Y))
+                return 0;
+
+        if (evemu_has_event(dev, EV_ABS, ABS_MT_POSITION_X) &&
+            evemu_has_event(dev, EV_ABS, ABS_MT_POSITION_Y))
+                return 1;
+
+        return evemu_has_event(dev, EV_ABS, ABS_X) &&
+                evemu_has_event(dev, EV_ABS, ABS_Y) &&
+                evemu_has_event(dev, EV_KEY, BTN_TOUCH) &&
+                evemu_has_event(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
+}
+
+int utouch_frame_init_mtdev(utouch_frame_handle fh,
+                             const struct evemu_device *dev)
+{
+        struct utouch_surface *s = fh->surface;
+        float tmp;
+
+        if (!utouch_frame_is_supported_mtdev(dev))
+                return -ENODEV;
+
+#ifdef INPUT_PROP_POINTER
+        s->needs_pointer = evemu_has_prop(dev, INPUT_PROP_POINTER);
+        s->is_direct = evemu_has_prop(dev, INPUT_PROP_DIRECT);
+        s->is_buttonpad = evemu_has_prop(dev, INPUT_PROP_BUTTONPAD);
+        s->is_semi_mt = evemu_has_prop(dev, INPUT_PROP_SEMI_MT);
+#endif
+        s->use_touch_major = evemu_has_event(dev, EV_ABS, ABS_MT_TOUCH_MAJOR);
+        s->use_touch_minor = evemu_has_event(dev, EV_ABS, ABS_MT_TOUCH_MINOR);
+        s->use_width_major = evemu_has_event(dev, EV_ABS, ABS_MT_WIDTH_MAJOR);
+        s->use_width_minor = evemu_has_event(dev, EV_ABS, ABS_MT_WIDTH_MINOR);
+        s->use_orientation = evemu_has_event(dev, EV_ABS, ABS_MT_ORIENTATION);
+        s->use_pressure = evemu_has_event(dev, EV_ABS, ABS_MT_PRESSURE);
+#ifdef ABS_MT_DISTANCE
+        s->use_distance = evemu_has_event(dev, EV_ABS, ABS_MT_DISTANCE);
+#endif
+
+
+        s->min_x = evemu_get_abs_minimum(dev, ABS_MT_POSITION_X);
+        s->min_y = evemu_get_abs_minimum(dev, ABS_MT_POSITION_Y);
+        s->max_x = evemu_get_abs_maximum(dev, ABS_MT_POSITION_X);
+        s->max_y = evemu_get_abs_maximum(dev, ABS_MT_POSITION_Y);
+        if (s->min_x == s->max_x) {
+                s->min_x = 0;
+                s->max_x = 1024;
+        }
+        if (s->min_y == s->max_y) {
+                s->min_y = 0;
+                s->max_y = 768;
+        }
+
+        s->max_pressure = evemu_get_abs_maximum(dev, ABS_MT_PRESSURE);
+        if (s->use_pressure && s->max_pressure == 0)
+                s->max_pressure = 256;
+
+        fh->max_orient = evemu_get_abs_maximum(dev, ABS_MT_ORIENTATION);
+        if (s->use_orientation && fh->max_orient == 0)
+                fh->max_orient = 1;
+
+        tmp = evemu_get_abs_resolution(dev, ABS_MT_POSITION_X);
+        if (tmp > 0)
+                s->phys_width = (s->max_x - s->min_x) / tmp;
+        else if (s->needs_pointer)
+                s->phys_width = 100;
+        else
+                s->phys_width = 250;
+
+        tmp = evemu_get_abs_resolution(dev, ABS_MT_POSITION_Y);
+        if (tmp > 0)
+                s->phys_height = (s->max_y - s->min_y) / tmp;
+        else if (s->needs_pointer)
+                s->phys_height = 65;
+        else
+                s->phys_height = 160;
+
+        tmp = evemu_get_abs_resolution(dev, ABS_MT_PRESSURE);
+        if (tmp > 0)
+                s->phys_pressure = s->max_pressure / tmp;
+        else
+                s->phys_pressure = 10;
+
+        return 0;
+}
+
+static float touch_angle(utouch_frame_handle fh, int orient)
+{
+        return orient / fh->max_orient * M_PI_2;
+}
+
+static int handle_abs_event(utouch_frame_handle fh,
+                            const struct input_event *ev)
+{
+        struct utouch_contact *t = utouch_frame_get_current_slot(fh);
+
+        switch (ev->code) {
+        case ABS_MT_SLOT:
+                utouch_frame_set_current_slot(fh, ev->value);
+                return 1;
+        case ABS_MT_POSITION_X:
+                t->x = ev->value;
+                return 1;
+        case ABS_MT_POSITION_Y:
+                t->y = ev->value;
+                return 1;
+        case ABS_MT_TOUCH_MAJOR:
+                t->touch_major = ev->value;
+                return 1;
+        case ABS_MT_TOUCH_MINOR:
+                t->touch_minor = ev->value;
+                return 1;
+        case ABS_MT_WIDTH_MAJOR:
+                t->width_major = ev->value;
+                return 1;
+        case ABS_MT_WIDTH_MINOR:
+                t->width_minor = ev->value;
+                return 1;
+        case ABS_MT_ORIENTATION:
+                t->orientation = touch_angle(fh, ev->value);
+                return 1;
+        case ABS_MT_PRESSURE:
+                t->pressure = ev->value;
+                return 1;
+#ifdef ABS_MT_DISTANCE
+        case ABS_MT_DISTANCE:
+                t->distance = ev->value;
+                return 1;
+#endif
+        case ABS_MT_TOOL_TYPE:
+                t->tool_type = ev->value;
+                return 1;
+        case ABS_MT_TRACKING_ID:
+                t->id = ev->value;
+                return 1;
+        default:
+                return 0;
+        }
+}
+
+static utouch_frame_time_t get_evtime_ms(const struct input_event *syn)
+{
+        static const utouch_frame_time_t ms = 1000;
+        return syn->time.tv_usec / ms + syn->time.tv_sec * ms;
+}
+
+const struct utouch_frame *
+utouch_frame_pump_mtdev(utouch_frame_handle fh, const struct input_event *ev)
+{
+        const struct utouch_frame *f = 0;
+
+        if (ev->type == EV_SYN && ev->code == SYN_REPORT)
+                f = utouch_frame_sync(fh, get_evtime_ms(ev));
+        else if (ev->type == EV_ABS)
+                handle_abs_event(fh, ev);
+
+        return f;
+}
diff --git a/src/frame.c b/src/frame.c
new file mode 100644
index 0000000..9c4be97
--- /dev/null
+++ b/src/frame.c
@@ -0,0 +1,303 @@
+/*****************************************************************************
+ *
+ * utouch-frame - Touch Frame Library
+ *
+ * Copyright (C) 2010 Canonical Ltd.
+ *
+ * This program 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 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ****************************************************************************/
+
+#include "frame-impl.h"
+#include <errno.h>
+#include <math.h>
+#include <memory.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+unsigned int utouch_frame_get_version(void)
+{
+        return UTOUCH_FRAME_VERSION;
+}
+
+static void destroy_slots(struct utouch_contact **slots, int nslot)
+{
+        int i;
+
+        if (slots) {
+                for (i = nslot - 1; i >= 0; i--)
+                        free(slots[i]);
+                free(slots);
+        }
+}
+
+static void destroy_frame(struct utouch_frame *frame, int nslot)
+{
+        if (frame) {
+                destroy_slots(frame->slots, nslot);
+                free(frame->active);
+                free(frame);
+        }
+}
+
+static void destroy_frames(struct utouch_frame **frames, int nframe, int nslot)
+{
+        int i;
+
+        if (frames) {
+                for (i = nframe - 1; i >= 0; i--)
+                        destroy_frame(frames[i], nslot);
+                free(frames);
+        }
+}
+
+static struct utouch_contact **create_slots(int nslot, int size)
+{
+        struct utouch_contact **slots;
+        struct utouch_contact *s;
+        int i;
+
+        slots = calloc(nslot, sizeof(slots[0]));
+        if (!slots)
+                return 0;
+
+        for (i = 0; i < nslot; i++) {
+                s = calloc(1, size);
+                if (!s)
+                        goto out;
+                slots[i] = s;
+                s->slot = i;
+                s->id = -1;
+        }
+
+        return slots;
+out:
+        destroy_slots(slots, nslot);
+        return 0;
+}
+
+static struct utouch_frame *create_frame(int nslot,
+                                         int frame_size, int slot_size)
+{
+        struct utouch_frame *frame;
+        int i;
+
+        frame = calloc(1, frame_size);
+        if (!frame)
+                return 0;
+
+        frame->active = calloc(nslot, sizeof(frame->active[0]));
+        frame->slots = create_slots(nslot, slot_size);
+        if (!frame->active || !frame->slots)
+                goto out;
+
+        return frame;
+out:
+        destroy_frame(frame, nslot);
+        return 0;
+}
+
+static struct utouch_frame **create_frames(int nframe, int nslot,
+                                           int frame_size, int slot_size)
+{
+        struct utouch_frame **frames;
+        struct utouch_frame *f;
+        int i;
+
+        frames = calloc(nframe, sizeof(frames[0]));
+        if (!frames)
+                return 0;
+
+        for (i = 0; i < nframe; i++) {
+                f = create_frame(nslot, frame_size, slot_size);
+                if (!f)
+                        goto out;
+                frames[i] = f;
+        }
+
+        return frames;
+out:
+        destroy_frames(frames, nframe, nslot);
+        return 0;
+}
+
+utouch_frame_handle utouch_frame_new_engine_raw(unsigned int nframe,
+                                                unsigned int nslot,
+                                                unsigned int rate,
+                                                unsigned int version,
+                                                unsigned int surface_size,
+                                                unsigned int frame_size,
+                                                unsigned int slot_size)
+{
+        struct utouch_frame *f, *pf;
+        utouch_frame_handle fh;
+        int i, j;
+
+        fh = calloc(1, sizeof(struct utouch_frame_engine));
+        if (!fh)
+                return 0;
+
+        fh->num_frames = nframe;
+        fh->num_slots = nslot;
+        fh->hold_ms = 1000 / rate;
+
+        surface_size = MAX(surface_size, sizeof(struct utouch_surface));
+        frame_size = MAX(frame_size, sizeof(struct utouch_frame));
+        slot_size = MAX(slot_size, sizeof(struct utouch_contact));
+
+        fh->surface = calloc(1, surface_size);
+        fh->frames = create_frames(nframe, nslot, frame_size, slot_size);
+        fh->next = create_frame(nslot, frame_size, slot_size);
+        if (!fh->surface || !fh->frames || !fh->next)
+                goto out;
+
+        pf = fh->frames[nframe - 1];
+        for (i = 0; i < nframe; i++) {
+                f = fh->frames[i];
+                for (j = 0; j < nslot; j++)
+                        f->slots[j]->prev = pf->slots[j];
+                f->prev = pf;
+                pf = f;
+        }
+
+        return fh;
+out:
+        utouch_frame_delete_engine(fh);
+        return 0;
+}
+
+void utouch_frame_delete_engine(utouch_frame_handle fh)
+{
+        destroy_frame(fh->next, fh->num_slots);
+        destroy_frames(fh->frames, fh->num_frames, fh->num_slots);
+        free(fh->surface);
+        free(fh);
+}
+
+struct utouch_surface *utouch_frame_get_surface(utouch_frame_handle fh)
+{
+        return fh->surface;
+}
+
+struct utouch_contact *utouch_frame_get_current_slot(utouch_frame_handle fh)
+{
+        return fh->next->slots[fh->slot];
+}
+
+int utouch_frame_set_current_slot(utouch_frame_handle fh, int slot)
+{
+        if (slot < 0 || slot >= fh->num_slots)
+                return -EINVAL;
+        fh->slot = slot;
+        return 0;
+}
+
+static void copy_contact(utouch_frame_handle fh,
+                         struct utouch_contact *a,
+                         const struct utouch_contact *b)
+{
+        struct utouch_surface *s = fh->surface;
+
+        a->active = b->id != -1;
+        a->id = b->id;
+        a->tool_type = b->tool_type;
+        a->x = b->x;
+        a->y = b->y;
+        a->touch_major = b->touch_major;
+        a->touch_minor = s->use_touch_minor && b->touch_minor > 0 ?
+                b->touch_minor : b->touch_major;
+        a->width_major = b->width_major;
+        a->width_minor = s->use_width_minor && b->width_minor > 0 ?
+                b->width_minor : b->width_major;
+        a->orientation = b->orientation;
+        a->pressure = b->pressure;
+        a->distance = b->distance;
+}
+
+static int detect_addrem(const struct utouch_contact *a,
+                         const struct utouch_contact *b)
+{
+        return a->id != b->id || a->tool_type != b->tool_type;
+}
+
+static int detect_mod(const struct utouch_contact *a,
+                      const struct utouch_contact *b)
+{
+        return a->x != b->x || a->y != b->y ||
+                a->touch_major != b->touch_major ||
+                a->touch_minor != b->touch_minor ||
+                a->width_major != b->width_major ||
+                a->width_minor != b->width_minor ||
+                a->orientation != b->orientation ||
+                a->pressure != b->pressure ||
+                a->distance != b->distance;
+}
+
+static utouch_frame_time_t get_time_ms()
+{
+        static const utouch_frame_time_t ms = 1000;
+        struct timeval tv;
+        gettimeofday(&tv, 0);
+        return tv.tv_usec / ms + tv.tv_sec * ms;
+}
+
+const struct utouch_frame *utouch_frame_sync(utouch_frame_handle fh,
+                                             utouch_frame_time_t time)
+{
+        struct utouch_frame *frame = fh->frames[fh->frame];
+        const struct utouch_frame *prev = frame->prev;
+        struct utouch_frame *next = fh->next;
+        int naddrem = 0, nmod = 0;
+        int i;
+
+        frame->num_active = 0;
+        for (i = 0; i < fh->num_slots; i++) {
+                struct utouch_contact *p = frame->slots[i];
+                const struct utouch_contact *q = next->slots[i];
+
+                copy_contact(fh, p, q);
+                if (p->active)
+                        frame->active[frame->num_active++] = p;
+
+                naddrem += detect_addrem(p->prev, p);
+                nmod += detect_mod(p->prev, p);
+        }
+        if (naddrem + nmod == 0)
+                return 0;
+
+        frame->time = time ? time : get_time_ms();
+        if (naddrem == 0 && frame->time < prev->time + fh->hold_ms)
+                return 0;
+
+        if (frame->num_active != prev->num_active) {
+                next->mod_time = frame->time;
+                next->revision++;
+        }
+        if (naddrem) {
+                next->slot_mod_time = frame->time;
+                next->slot_revision++;
+        }
+
+        frame->revision = next->revision;
+        frame->slot_revision = next->slot_revision;
+        frame->mod_time = next->mod_time;
+        frame->slot_mod_time = next->slot_mod_time;
+        frame->sequence_id = next->sequence_id++;
+
+        fh->frame = (fh->frame + 1) % fh->num_frames;
+
+        return frame;
+}
diff --git a/test/Makefile.am b/test/Makefile.am
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/Makefile.am
diff --git a/tools/Makefile.am b/tools/Makefile.am
new file mode 100644
index 0000000..6b50897
--- /dev/null
+++ b/tools/Makefile.am
@@ -0,0 +1,7 @@
+bin_PROGRAMS = utouch-frame-test-mtdev
+
+INCLUDES=-I$(top_srcdir)/include/
+
+utouch_frame_test_mtdev_SOURCES = utouch-frame-test-mtdev.c
+utouch_frame_test_mtdev_LDFLAGS = -L$(top_builddir)/src/.libs/ \
+        -lutouch-frame -lutouch-evemu -lmtdev -lm
diff --git a/tools/utouch-frame-test-mtdev.c b/tools/utouch-frame-test-mtdev.c
new file mode 100644
index 0000000..13f5a68
--- /dev/null
+++ b/tools/utouch-frame-test-mtdev.c
@@ -0,0 +1,202 @@
+/*****************************************************************************
+ *
+ * utouch-frame - Touch Frame Library
+ *
+ * Copyright (C) 2010-2011 Canonical Ltd.
+ *
+ * This program 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 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *      Henrik Rydberg <rydberg@bitmath.org>
+ *
+ ****************************************************************************/
+
+#define MTDEV_NO_LEGACY_API
+
+#include <utouch/frame-mtdev.h>
+#include <mtdev.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+struct frame_test {
+        struct evemu_device *evemu;
+        struct mtdev *mtdev;
+        utouch_frame_handle fh;
+};
+
+static int init_evemu(struct frame_test *test, int fd)
+{
+        test->evemu = evemu_new(NULL);
+        if (!test->evemu)
+                return -1;
+        return evemu_extract(test->evemu, fd);
+}
+
+static int init_mtdev(struct frame_test *test, int fd)
+{
+        test->mtdev = mtdev_new_open(fd);
+        if (!test->mtdev)
+                return -1;
+        return 0;
+}
+
+static int init_frame(struct frame_test *test, int fd)
+{
+        test->fh = utouch_frame_new_engine(100, 32, 100);
+        if (!test->fh)
+                return -1;
+        return utouch_frame_init_mtdev(test->fh, test->evemu);
+}
+
+static void destroy_all(struct frame_test *test)
+{
+        utouch_frame_delete_engine(test->fh);
+        mtdev_close_delete(test->mtdev);
+        evemu_delete(test->evemu);
+        memset(test, 0, sizeof(*test));
+}
+
+static void report_frame(const struct utouch_frame *frame)
+{
+        int i;
+
+        for (i = 0; i < frame->num_active; i++) {
+                const struct utouch_contact *t = frame->active[i];
+
+                fprintf(stderr, "touch %d\n", i);
+                fprintf(stderr, "  slot:         %d\n", t->slot);
+                fprintf(stderr, "  id:           %d\n", t->id);
+                fprintf(stderr, "  tool_type:    %d\n", t->tool_type);
+                fprintf(stderr, "  x:            %f\n", t->x);
+                fprintf(stderr, "  y:            %f\n", t->y);
+                fprintf(stderr, "  touch_major:  %f\n", t->touch_major);
+                fprintf(stderr, "  touch_minor:  %f\n", t->touch_minor);
+                fprintf(stderr, "  width_major:  %f\n", t->width_major);
+                fprintf(stderr, "  width_minor:  %f\n", t->width_minor);
+                fprintf(stderr, "  angle:        %f\n", t->orientation);
+                fprintf(stderr, "  pressure:     %f\n", t->pressure);
+                fprintf(stderr, "  distance:     %f\n", t->distance);
+        }
+
+        fprintf(stderr, "sync %d %ld %d %d %d\n",
+                frame->num_active,
+                frame->time,
+                frame->sequence_id,
+                frame->revision,
+                frame->slot_revision);
+}
+
+static void loop_device(struct frame_test *test, int fd)
+{
+        const struct utouch_frame *frame;
+        struct input_event ev;
+
+        while (!mtdev_idle(test->mtdev, fd, 5000)) {
+                while (mtdev_get(test->mtdev, fd, &ev, 1) > 0) {
+                        frame = utouch_frame_pump_mtdev(test->fh, &ev);
+                        if (frame)
+                                report_frame(frame);
+                }
+        }
+}
+
+static void report_device_caps(struct frame_test *test)
+{
+#ifdef INPUT_PROP_POINTER
+        fprintf(stderr, "device props:\n");
+        if (evemu_has_prop(test->evemu, INPUT_PROP_POINTER))
+                fprintf(stderr, "\tpointer\n");
+        if (evemu_has_prop(test->evemu, INPUT_PROP_DIRECT))
+                fprintf(stderr, "\tdirect\n");
+        if (evemu_has_prop(test->evemu, INPUT_PROP_BUTTONPAD))
+                fprintf(stderr, "\tbuttonpad\n");
+        if (evemu_has_prop(test->evemu, INPUT_PROP_SEMI_MT))
+                fprintf(stderr, "\tsemi_mt\n");
+#endif
+        fprintf(stderr, "device mt events:\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_SLOT))
+                fprintf(stderr, "\tslot\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TOUCH_MAJOR))
+                fprintf(stderr, "\ttouch_major\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TOUCH_MINOR))
+                fprintf(stderr, "\ttouch_minor\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_WIDTH_MAJOR))
+                fprintf(stderr, "\twidth_major\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_WIDTH_MINOR))
+                fprintf(stderr, "\twidth_minor\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_ORIENTATION))
+                fprintf(stderr, "\torientation\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_POSITION_X))
+                fprintf(stderr, "\tposition_x\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_POSITION_Y))
+                fprintf(stderr, "\tposition_y\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TOOL_TYPE))
+                fprintf(stderr, "\tposition_y\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TRACKING_ID))
+                fprintf(stderr, "\ttracking_id\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_PRESSURE))
+                fprintf(stderr, "\tpressure\n");
+        if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_DISTANCE))
+                fprintf(stderr, "\tdistance\n");
+}
+
+int main(int argc, char *argv[])
+{
+        struct frame_test test;
+        int fd;
+
+        if (argc < 2) {
+                fprintf(stderr, "Usage: %s <device>\n", argv[0]);
+                return -1;
+        }
+
+        fd = open(argv[1], O_RDONLY | O_NONBLOCK);
+        if (fd < 0) {
+                fprintf(stderr, "error: could not open device\n");
+                return -1;
+        }
+        if (ioctl(fd, EVIOCGRAB, 1)) {
+                fprintf(stderr, "error: could not grab the device\n");
+                return -1;
+        }
+
+        if (init_evemu(&test, fd)) {
+                fprintf(stderr, "error: could not describe device\n");
+                return -1;
+        }
+        if (!utouch_frame_is_supported_mtdev(test.evemu)) {
+                fprintf(stderr, "error: unsupported device\n");
+                return -1;
+        }
+
+        fprintf(stderr, "device: %s\n", evemu_get_name(test.evemu));
+
+        if (init_mtdev(&test, fd)) {
+                fprintf(stderr, "error: could not init mtdev\n");
+                return -1;
+        }
+        if (init_frame(&test, fd)) {
+                fprintf(stderr, "error: could not init frame\n");
+                return -1;
+        }
+
+        report_device_caps(&test);
+
+        loop_device(&test, fd);
+
+        destroy_all(&test);
+        return 0;
+}
diff --git a/utouch-frame.pc.in b/utouch-frame.pc.in
new file mode 100644
index 0000000..cbb305a
--- /dev/null
+++ b/utouch-frame.pc.in
@@ -0,0 +1,9 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: utouch-frame
+Description: Touch Frame Library
+Version: @PACKAGE_VERSION@
+Libs: -L${libdir} -lutouch-frame