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compositor: Drop legacy backends in favor of libinput

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Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
dev
Peter Hutterer 10 years ago committed by Pekka Paalanen
parent a4bac9e0e0
commit 823ad33ef3
13 changed files with 5 additions and 2626 deletions
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  1. 15
      Makefile.am
  2. 10
      configure.ac
  3. 2
      src/compositor-drm.c
  4. 2
      src/compositor-fbdev.c
  5. 2
      src/compositor-rpi.c
  6. 800
      src/evdev-touchpad.c
  7. 755
      src/evdev.c
  8. 137
      src/evdev.h
  9. 337
      src/filter.c
  10. 63
      src/filter.h
  11. 34
      src/udev-input.h
  12. 417
      src/udev-seat.c
  13. 57
      src/udev-seat.h

15
Makefile.am
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@ -184,25 +184,12 @@ x11_backend_la_CFLAGS = \
x11_backend_la_SOURCES = src/compositor-x11.c x11_backend_la_SOURCES = src/compositor-x11.c
endif endif
INPUT_BACKEND_SOURCES = src/udev-input.h
if ENABLE_LIBINPUT_BACKEND
INPUT_BACKEND_LIBS = $(LIBINPUT_BACKEND_LIBS) INPUT_BACKEND_LIBS = $(LIBINPUT_BACKEND_LIBS)
INPUT_BACKEND_SOURCES += \ INPUT_BACKEND_SOURCES = \
src/libinput-seat.c \ src/libinput-seat.c \
src/libinput-seat.h \ src/libinput-seat.h \
src/libinput-device.c \ src/libinput-device.c \
src/libinput-device.h src/libinput-device.h
else
INPUT_BACKEND_SOURCES += \
src/filter.c \
src/filter.h \
src/udev-seat.c \
src/udev-seat.h \
src/evdev.c \
src/evdev.h \
src/evdev-touchpad.c
endif
if ENABLE_DRM_COMPOSITOR if ENABLE_DRM_COMPOSITOR
module_LTLIBRARIES += drm-backend.la module_LTLIBRARIES += drm-backend.la

10
configure.ac
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@ -155,15 +155,7 @@ if test x$enable_drm_compositor = xyes; then
fi fi
AC_ARG_ENABLE(libinput-backend, [ --disable-libinput-backend],, PKG_CHECK_MODULES(LIBINPUT_BACKEND, [libinput >= 0.6.0])
enable_libinput_backend=yes)
AM_CONDITIONAL([ENABLE_LIBINPUT_BACKEND], [test x$enable_libinput_backend = xyes])
if test x$enable_libinput_backend = xyes; then
AC_DEFINE([BUILD_LIBINPUT_BACKEND], [1], [Build the libinput input device backend])
PKG_CHECK_MODULES(LIBINPUT_BACKEND, [libinput >= 0.6.0])
fi
PKG_CHECK_MODULES(COMPOSITOR, [$COMPOSITOR_MODULES]) PKG_CHECK_MODULES(COMPOSITOR, [$COMPOSITOR_MODULES])
AC_ARG_ENABLE(wayland-compositor, [ --enable-wayland-compositor],, AC_ARG_ENABLE(wayland-compositor, [ --enable-wayland-compositor],,

2
src/compositor-drm.c
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@ -47,7 +47,7 @@
#include "compositor.h" #include "compositor.h"
#include "gl-renderer.h" #include "gl-renderer.h"
#include "pixman-renderer.h" #include "pixman-renderer.h"
#include "udev-input.h" #include "libinput-seat.h"
#include "launcher-util.h" #include "launcher-util.h"
#include "vaapi-recorder.h" #include "vaapi-recorder.h"

2
src/compositor-fbdev.c
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@ -42,7 +42,7 @@
#include "compositor.h" #include "compositor.h"
#include "launcher-util.h" #include "launcher-util.h"
#include "pixman-renderer.h" #include "pixman-renderer.h"
#include "udev-input.h" #include "libinput-seat.h"
#include "gl-renderer.h" #include "gl-renderer.h"
struct fbdev_compositor { struct fbdev_compositor {

2
src/compositor-rpi.c
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@ -46,7 +46,7 @@
#include "compositor.h" #include "compositor.h"
#include "rpi-renderer.h" #include "rpi-renderer.h"
#include "launcher-util.h" #include "launcher-util.h"
#include "udev-input.h" #include "libinput-seat.h"
#if 0 #if 0
#define DBG(...) \ #define DBG(...) \

800
src/evdev-touchpad.c
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@ -1,800 +0,0 @@
/*
* Copyright © 2012 Jonas Ådahl
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 "config.h"
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <stdbool.h>
#include <unistd.h>
#include <linux/input.h>
#include "filter.h"
#include "evdev.h"
#include "../shared/config-parser.h"
/* Default values */
#define DEFAULT_CONSTANT_ACCEL_NUMERATOR 50
#define DEFAULT_MIN_ACCEL_FACTOR 0.16
#define DEFAULT_MAX_ACCEL_FACTOR 1.0
#define DEFAULT_HYSTERESIS_MARGIN_DENOMINATOR 700.0
#define DEFAULT_TOUCHPAD_SINGLE_TAP_BUTTON BTN_LEFT
#define DEFAULT_TOUCHPAD_SINGLE_TAP_TIMEOUT 100
enum touchpad_model {
TOUCHPAD_MODEL_UNKNOWN = 0,
TOUCHPAD_MODEL_SYNAPTICS,
TOUCHPAD_MODEL_ALPS,
TOUCHPAD_MODEL_APPLETOUCH,
TOUCHPAD_MODEL_ELANTECH
};
enum touchpad_event {
TOUCHPAD_EVENT_NONE = 0,
TOUCHPAD_EVENT_ABSOLUTE_ANY = (1 << 0),
TOUCHPAD_EVENT_ABSOLUTE_X = (1 << 1),
TOUCHPAD_EVENT_ABSOLUTE_Y = (1 << 2),
TOUCHPAD_EVENT_REPORT = (1 << 3)
};
struct touchpad_model_spec {
short vendor;
short product;
enum touchpad_model model;
};
static struct touchpad_model_spec touchpad_spec_table[] = {
{0x0002, 0x0007, TOUCHPAD_MODEL_SYNAPTICS},
{0x0002, 0x0008, TOUCHPAD_MODEL_ALPS},
{0x05ac, 0x0000, TOUCHPAD_MODEL_APPLETOUCH},
{0x0002, 0x000e, TOUCHPAD_MODEL_ELANTECH},
{0x0000, 0x0000, TOUCHPAD_MODEL_UNKNOWN}
};
enum touchpad_state {
TOUCHPAD_STATE_NONE = 0,
TOUCHPAD_STATE_TOUCH = (1 << 0),
TOUCHPAD_STATE_MOVE = (1 << 1)
};
#define TOUCHPAD_HISTORY_LENGTH 4
struct touchpad_motion {
int32_t x;
int32_t y;
};
enum touchpad_fingers_state {
TOUCHPAD_FINGERS_ONE = (1 << 0),
TOUCHPAD_FINGERS_TWO = (1 << 1),
TOUCHPAD_FINGERS_THREE = (1 << 2)
};
enum fsm_event {
FSM_EVENT_TOUCH,
FSM_EVENT_RELEASE,
FSM_EVENT_MOTION,
FSM_EVENT_TIMEOUT
};
enum fsm_state {
FSM_IDLE,
FSM_TOUCH,
FSM_TAP,
FSM_TAP_2,
FSM_DRAG
};
struct touchpad_dispatch {
struct evdev_dispatch base;
struct evdev_device *device;
enum touchpad_model model;
unsigned int state;
int finger_state;
int last_finger_state;
double constant_accel_factor;
double min_accel_factor;
double max_accel_factor;
unsigned int event_mask;
unsigned int event_mask_filter;
int reset;
struct {
bool enable;
struct wl_array events;
enum fsm_state state;
struct wl_event_source *timer_source;
} fsm;
struct {
int32_t x;
int32_t y;
} hw_abs;
int has_pressure;
struct {
int32_t touch_low;
int32_t touch_high;
} pressure;
struct {
int32_t margin_x;
int32_t margin_y;
int32_t center_x;
int32_t center_y;
} hysteresis;
struct touchpad_motion motion_history[TOUCHPAD_HISTORY_LENGTH];
int motion_index;
unsigned int motion_count;
struct weston_motion_filter *filter;
};
static enum touchpad_model
get_touchpad_model(struct evdev_device *device)
{
struct input_id id;
unsigned int i;
if (ioctl(device->fd, EVIOCGID, &id) < 0)
return TOUCHPAD_MODEL_UNKNOWN;
for (i = 0; i < ARRAY_LENGTH(touchpad_spec_table); i++)
if (touchpad_spec_table[i].vendor == id.vendor &&
(!touchpad_spec_table[i].product ||
touchpad_spec_table[i].product == id.product))
return touchpad_spec_table[i].model;
return TOUCHPAD_MODEL_UNKNOWN;
}
static void
configure_touchpad_pressure(struct touchpad_dispatch *touchpad,
int32_t pressure_min, int32_t pressure_max)
{
int32_t range = pressure_max - pressure_min + 1;
touchpad->has_pressure = 1;
/* Magic numbers from xf86-input-synaptics */
switch (touchpad->model) {
case TOUCHPAD_MODEL_ELANTECH:
touchpad->pressure.touch_low = pressure_min + 1;
touchpad->pressure.touch_high = pressure_min + 1;
break;
default:
touchpad->pressure.touch_low =
pressure_min + range * (25.0/256.0);
touchpad->pressure.touch_high =
pressure_min + range * (30.0/256.0);
}
}
static double
touchpad_profile(struct weston_motion_filter *filter,
void *data,
double velocity,
uint32_t time)
{
struct touchpad_dispatch *touchpad =
(struct touchpad_dispatch *) data;
double accel_factor;
accel_factor = velocity * touchpad->constant_accel_factor;
if (accel_factor > touchpad->max_accel_factor)
accel_factor = touchpad->max_accel_factor;
else if (accel_factor < touchpad->min_accel_factor)
accel_factor = touchpad->min_accel_factor;
return accel_factor;
}
static inline struct touchpad_motion *
motion_history_offset(struct touchpad_dispatch *touchpad, int offset)
{
int offset_index =
(touchpad->motion_index - offset + TOUCHPAD_HISTORY_LENGTH) %
TOUCHPAD_HISTORY_LENGTH;
return &touchpad->motion_history[offset_index];
}
static double
estimate_delta(int x0, int x1, int x2, int x3)
{
return (x0 + x1 - x2 - x3) / 4;
}
static int
hysteresis(int in, int center, int margin)
{
int diff = in - center;
if (abs(diff) <= margin)
return center;
if (diff > margin)
return center + diff - margin;
else if (diff < -margin)
return center + diff + margin;
return center + diff;
}
static void
touchpad_get_delta(struct touchpad_dispatch *touchpad, double *dx, double *dy)
{
*dx = estimate_delta(motion_history_offset(touchpad, 0)->x,
motion_history_offset(touchpad, 1)->x,
motion_history_offset(touchpad, 2)->x,
motion_history_offset(touchpad, 3)->x);
*dy = estimate_delta(motion_history_offset(touchpad, 0)->y,
motion_history_offset(touchpad, 1)->y,
motion_history_offset(touchpad, 2)->y,
motion_history_offset(touchpad, 3)->y);
}
static void
filter_motion(struct touchpad_dispatch *touchpad,
double *dx, double *dy, uint32_t time)
{
struct weston_motion_params motion;
motion.dx = *dx;
motion.dy = *dy;
weston_filter_dispatch(touchpad->filter, &motion, touchpad, time);
*dx = motion.dx;
*dy = motion.dy;
}
static void
notify_button_pressed(struct touchpad_dispatch *touchpad, uint32_t time)
{
notify_button(touchpad->device->seat, time,
DEFAULT_TOUCHPAD_SINGLE_TAP_BUTTON,
WL_POINTER_BUTTON_STATE_PRESSED);
}
static void
notify_button_released(struct touchpad_dispatch *touchpad, uint32_t time)
{
notify_button(touchpad->device->seat, time,
DEFAULT_TOUCHPAD_SINGLE_TAP_BUTTON,
WL_POINTER_BUTTON_STATE_RELEASED);
}
static void
notify_tap(struct touchpad_dispatch *touchpad, uint32_t time)
{
notify_button_pressed(touchpad, time);
notify_button_released(touchpad, time);
}
static void
process_fsm_events(struct touchpad_dispatch *touchpad, uint32_t time)
{
uint32_t timeout = UINT32_MAX;
enum fsm_event *pevent;
enum fsm_event event;
if (!touchpad->fsm.enable)
return;
if (touchpad->fsm.events.size == 0)
return;
wl_array_for_each(pevent, &touchpad->fsm.events) {
event = *pevent;
timeout = 0;
switch (touchpad->fsm.state) {
case FSM_IDLE:
switch (event) {
case FSM_EVENT_TOUCH:
touchpad->fsm.state = FSM_TOUCH;
break;
default:
break;
}
break;
case FSM_TOUCH:
switch (event) {
case FSM_EVENT_RELEASE:
timeout = DEFAULT_TOUCHPAD_SINGLE_TAP_TIMEOUT;
touchpad->fsm.state = FSM_TAP;
break;
default:
touchpad->fsm.state = FSM_IDLE;
break;
}
break;
case FSM_TAP:
switch (event) {
case FSM_EVENT_TIMEOUT:
notify_tap(touchpad, time);
touchpad->fsm.state = FSM_IDLE;
break;
case FSM_EVENT_TOUCH:
notify_button_pressed(touchpad, time);
touchpad->fsm.state = FSM_TAP_2;
break;
default:
touchpad->fsm.state = FSM_IDLE;
break;
}
break;
case FSM_TAP_2:
switch (event) {
case FSM_EVENT_MOTION:
touchpad->fsm.state = FSM_DRAG;
break;
case FSM_EVENT_RELEASE:
notify_button_released(touchpad, time);
notify_tap(touchpad, time);
touchpad->fsm.state = FSM_IDLE;
break;
default:
touchpad->fsm.state = FSM_IDLE;
break;
}
break;
case FSM_DRAG:
switch (event) {
case FSM_EVENT_RELEASE:
notify_button_released(touchpad, time);
touchpad->fsm.state = FSM_IDLE;
break;
default:
touchpad->fsm.state = FSM_IDLE;
break;
}
break;
default:
weston_log("evdev-touchpad: Unknown state %d",
touchpad->fsm.state);
touchpad->fsm.state = FSM_IDLE;
break;
}
}
if (timeout != UINT32_MAX)
wl_event_source_timer_update(touchpad->fsm.timer_source,
timeout);
wl_array_release(&touchpad->fsm.events);
wl_array_init(&touchpad->fsm.events);
}
static void
push_fsm_event(struct touchpad_dispatch *touchpad,
enum fsm_event event)
{
enum fsm_event *pevent;
if (!touchpad->fsm.enable)
return;
pevent = wl_array_add(&touchpad->fsm.events, sizeof event);
if (pevent)
*pevent = event;
else
touchpad->fsm.state = FSM_IDLE;
}
static int
fsm_timout_handler(void *data)
{
struct touchpad_dispatch *touchpad = data;
if (touchpad->fsm.events.size == 0) {
push_fsm_event(touchpad, FSM_EVENT_TIMEOUT);
process_fsm_events(touchpad, weston_compositor_get_time());
}
return 1;
}
static void
touchpad_update_state(struct touchpad_dispatch *touchpad, uint32_t time)
{
int motion_index;
int center_x, center_y;
double dx = 0.0, dy = 0.0;
if (touchpad->reset ||
touchpad->last_finger_state != touchpad->finger_state) {
touchpad->reset = 0;
touchpad->motion_count = 0;
touchpad->event_mask = TOUCHPAD_EVENT_NONE;
touchpad->event_mask_filter =
TOUCHPAD_EVENT_ABSOLUTE_X | TOUCHPAD_EVENT_ABSOLUTE_Y;
touchpad->last_finger_state = touchpad->finger_state;
process_fsm_events(touchpad, time);
return;
}
touchpad->last_finger_state = touchpad->finger_state;
if (!(touchpad->event_mask & TOUCHPAD_EVENT_REPORT))
return;
else
touchpad->event_mask &= ~TOUCHPAD_EVENT_REPORT;
if ((touchpad->event_mask & touchpad->event_mask_filter) !=
touchpad->event_mask_filter)
return;
touchpad->event_mask_filter = TOUCHPAD_EVENT_ABSOLUTE_ANY;
touchpad->event_mask = 0;
/* Avoid noice by moving center only when delta reaches a threshold
* distance from the old center. */
if (touchpad->motion_count > 0) {
center_x = hysteresis(touchpad->hw_abs.x,
touchpad->hysteresis.center_x,
touchpad->hysteresis.margin_x);
center_y = hysteresis(touchpad->hw_abs.y,
touchpad->hysteresis.center_y,
touchpad->hysteresis.margin_y);
} else {
center_x = touchpad->hw_abs.x;
center_y = touchpad->hw_abs.y;
}
touchpad->hysteresis.center_x = center_x;
touchpad->hysteresis.center_y = center_y;
touchpad->hw_abs.x = center_x;
touchpad->hw_abs.y = center_y;
/* Update motion history tracker */
motion_index = (touchpad->motion_index + 1) % TOUCHPAD_HISTORY_LENGTH;
touchpad->motion_index = motion_index;
touchpad->motion_history[motion_index].x = touchpad->hw_abs.x;
touchpad->motion_history[motion_index].y = touchpad->hw_abs.y;
if (touchpad->motion_count < 4)
touchpad->motion_count++;
if (touchpad->motion_count >= 4) {
touchpad_get_delta(touchpad, &dx, &dy);
filter_motion(touchpad, &dx, &dy, time);
if (touchpad->finger_state == TOUCHPAD_FINGERS_ONE) {
notify_motion(touchpad->device->seat, time,
wl_fixed_from_double(dx),
wl_fixed_from_double(dy));
} else if (touchpad->finger_state == TOUCHPAD_FINGERS_TWO) {
if (dx != 0.0)
notify_axis(touchpad->device->seat,
time,
WL_POINTER_AXIS_HORIZONTAL_SCROLL,
wl_fixed_from_double(dx));
if (dy != 0.0)
notify_axis(touchpad->device->seat,
time,
WL_POINTER_AXIS_VERTICAL_SCROLL,
wl_fixed_from_double(dy));
}
}
if (!(touchpad->state & TOUCHPAD_STATE_MOVE) &&
((int)dx || (int)dy)) {
touchpad->state |= TOUCHPAD_STATE_MOVE;
push_fsm_event(touchpad, FSM_EVENT_MOTION);
}
process_fsm_events(touchpad, time);
}
static void
on_touch(struct touchpad_dispatch *touchpad)
{
touchpad->state |= TOUCHPAD_STATE_TOUCH;
push_fsm_event(touchpad, FSM_EVENT_TOUCH);
}
static void
on_release(struct touchpad_dispatch *touchpad)
{
touchpad->reset = 1;
touchpad->state &= ~(TOUCHPAD_STATE_MOVE | TOUCHPAD_STATE_TOUCH);
push_fsm_event(touchpad, FSM_EVENT_RELEASE);
}
static inline void
process_absolute(struct touchpad_dispatch *touchpad,
struct evdev_device *device,
struct input_event *e)
{
switch (e->code) {
case ABS_PRESSURE:
if (e->value > touchpad->pressure.touch_high &&
!(touchpad->state & TOUCHPAD_STATE_TOUCH))
on_touch(touchpad);
else if (e->value < touchpad->pressure.touch_low &&
touchpad->state & TOUCHPAD_STATE_TOUCH)
on_release(touchpad);
break;
case ABS_X:
if (touchpad->state & TOUCHPAD_STATE_TOUCH) {
touchpad->hw_abs.x = e->value;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_ANY;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_X;
}
break;
case ABS_Y:
if (touchpad->state & TOUCHPAD_STATE_TOUCH) {
touchpad->hw_abs.y = e->value;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_ANY;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_Y;
}
break;
}
}
static inline void
process_key(struct touchpad_dispatch *touchpad,
struct evdev_device *device,
struct input_event *e,
uint32_t time)
{
uint32_t code;
switch (e->code) {
case BTN_TOUCH:
if (!touchpad->has_pressure) {
if (e->value && !(touchpad->state & TOUCHPAD_STATE_TOUCH))
on_touch(touchpad);
else if (!e->value)
on_release(touchpad);
}
break;
case BTN_LEFT:
case BTN_RIGHT:
case BTN_MIDDLE:
case BTN_SIDE:
case BTN_EXTRA:
case BTN_FORWARD:
case BTN_BACK:
case BTN_TASK:
if (!touchpad->fsm.enable && e->code == BTN_LEFT &&
touchpad->finger_state == TOUCHPAD_FINGERS_TWO)
code = BTN_RIGHT;
else
code = e->code;
notify_button(device->seat, time, code,
e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
WL_POINTER_BUTTON_STATE_RELEASED);
break;
case BTN_TOOL_PEN:
case BTN_TOOL_RUBBER:
case BTN_TOOL_BRUSH:
case BTN_TOOL_PENCIL:
case BTN_TOOL_AIRBRUSH:
case BTN_TOOL_MOUSE:
case BTN_TOOL_LENS:
touchpad->reset = 1;
break;
case BTN_TOOL_FINGER:
if (e->value)
touchpad->finger_state |= TOUCHPAD_FINGERS_ONE;
else
touchpad->finger_state &= ~TOUCHPAD_FINGERS_ONE;
break;
case BTN_TOOL_DOUBLETAP:
if (e->value)
touchpad->finger_state |= TOUCHPAD_FINGERS_TWO;
else
touchpad->finger_state &= ~TOUCHPAD_FINGERS_TWO;
break;
case BTN_TOOL_TRIPLETAP:
if (e->value)
touchpad->finger_state |= TOUCHPAD_FINGERS_THREE;
else
touchpad->finger_state &= ~TOUCHPAD_FINGERS_THREE;
break;
}
}
static void
touchpad_process(struct evdev_dispatch *dispatch,
struct evdev_device *device,
struct input_event *e,
uint32_t time)
{
struct touchpad_dispatch *touchpad =
(struct touchpad_dispatch *) dispatch;
switch (e->type) {
case EV_SYN:
if (e->code == SYN_REPORT)
touchpad->event_mask |= TOUCHPAD_EVENT_REPORT;
break;
case EV_ABS:
process_absolute(touchpad, device, e);
break;
case EV_KEY:
process_key(touchpad, device, e, time);
break;
}
touchpad_update_state(touchpad, time);
}
static void
touchpad_destroy(struct evdev_dispatch *dispatch)
{
struct touchpad_dispatch *touchpad =
(struct touchpad_dispatch *) dispatch;
touchpad->filter->interface->destroy(touchpad->filter);
wl_event_source_remove(touchpad->fsm.timer_source);
free(dispatch);
}
struct evdev_dispatch_interface touchpad_interface = {
touchpad_process,
touchpad_destroy
};
static void
touchpad_parse_config(struct touchpad_dispatch *touchpad, double diagonal)
{
struct weston_compositor *compositor =
touchpad->device->seat->compositor;
struct weston_config_section *s;
double constant_accel_factor;
double min_accel_factor;
double max_accel_factor;
s = weston_config_get_section(compositor->config,
"touchpad", NULL, NULL);
weston_config_section_get_double(s, "constant_accel_factor",
&constant_accel_factor,
DEFAULT_CONSTANT_ACCEL_NUMERATOR);
weston_config_section_get_double(s, "min_accel_factor",
&min_accel_factor,
DEFAULT_MIN_ACCEL_FACTOR);
weston_config_section_get_double(s, "max_accel_factor",
&max_accel_factor,
DEFAULT_MAX_ACCEL_FACTOR);
touchpad->constant_accel_factor =
constant_accel_factor / diagonal;
touchpad->min_accel_factor = min_accel_factor;
touchpad->max_accel_factor = max_accel_factor;
}
static int
touchpad_init(struct touchpad_dispatch *touchpad,
struct evdev_device *device)
{
struct weston_motion_filter *accel;
struct wl_event_loop *loop;
unsigned long prop_bits[INPUT_PROP_MAX];
struct input_absinfo absinfo;
unsigned long abs_bits[NBITS(ABS_MAX)];
bool has_buttonpad;
double width;
double height;
double diagonal;
touchpad->base.interface = &touchpad_interface;
touchpad->device = device;
/* Detect model */
touchpad->model = get_touchpad_model(device);
ioctl(device->fd, EVIOCGPROP(sizeof(prop_bits)), prop_bits);
has_buttonpad = TEST_BIT(prop_bits, INPUT_PROP_BUTTONPAD);
/* Configure pressure */
ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)), abs_bits);
if (TEST_BIT(abs_bits, ABS_PRESSURE)) {
ioctl(device->fd, EVIOCGABS(ABS_PRESSURE), &absinfo);
configure_touchpad_pressure(touchpad,
absinfo.minimum,
absinfo.maximum);
}
/* Configure acceleration factor */
width = abs(device->abs.max_x - device->abs.min_x);
height = abs(device->abs.max_y - device->abs.min_y);
diagonal = sqrt(width*width + height*height);
touchpad_parse_config(touchpad, diagonal);
touchpad->hysteresis.margin_x =
diagonal / DEFAULT_HYSTERESIS_MARGIN_DENOMINATOR;
touchpad->hysteresis.margin_y =
diagonal / DEFAULT_HYSTERESIS_MARGIN_DENOMINATOR;
touchpad->hysteresis.center_x = 0;
touchpad->hysteresis.center_y = 0;
/* Configure acceleration profile */
accel = create_pointer_accelator_filter(touchpad_profile);
if (accel == NULL)
return -1;
touchpad->filter = accel;
/* Setup initial state */
touchpad->reset = 1;
memset(touchpad->motion_history, 0, sizeof touchpad->motion_history);
touchpad->motion_index = 0;
touchpad->motion_count = 0;
touchpad->state = TOUCHPAD_STATE_NONE;
touchpad->last_finger_state = 0;
touchpad->finger_state = 0;
wl_array_init(&touchpad->fsm.events);
touchpad->fsm.state = FSM_IDLE;
loop = wl_display_get_event_loop(device->seat->compositor->wl_display);
touchpad->fsm.timer_source =
wl_event_loop_add_timer(loop, fsm_timout_handler, touchpad);
if (touchpad->fsm.timer_source == NULL) {
accel->interface->destroy(accel);
return -1;
}
/* Configure */
touchpad->fsm.enable = !has_buttonpad;
return 0;
}
struct evdev_dispatch *
evdev_touchpad_create(struct evdev_device *device)
{
struct touchpad_dispatch *touchpad;
touchpad = malloc(sizeof *touchpad);
if (touchpad == NULL)
return NULL;
if (touchpad_init(touchpad, device) != 0) {
free(touchpad);
return NULL;
}
return &touchpad->base;
}

755
src/evdev.c
Unescape View File

@ -1,755 +0,0 @@
/*
* Copyright © 2010 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include <unistd.h>
#include <fcntl.h>
#include <mtdev.h>
#include <assert.h>
#include "compositor.h"
#include "evdev.h"
#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
void
evdev_led_update(struct evdev_device *device, enum weston_led leds)
{
static const struct {
enum weston_led weston;
int evdev;
} map[] = {
{ LED_NUM_LOCK, LED_NUML },
{ LED_CAPS_LOCK, LED_CAPSL },
{ LED_SCROLL_LOCK, LED_SCROLLL },
};
struct input_event ev[ARRAY_LENGTH(map) + 1];
unsigned int i;
if (!(device->seat_caps & EVDEV_SEAT_KEYBOARD))
return;
memset(ev, 0, sizeof(ev));
for (i = 0; i < ARRAY_LENGTH(map); i++) {
ev[i].type = EV_LED;
ev[i].code = map[i].evdev;
ev[i].value = !!(leds & map[i].weston);
}
ev[i].type = EV_SYN;
ev[i].code = SYN_REPORT;
i = write(device->fd, ev, sizeof ev);
(void)i; /* no, we really don't care about the return value */
}
static void
transform_absolute(struct evdev_device *device, int32_t *x, int32_t *y)
{
if (!device->abs.apply_calibration) {
*x = device->abs.x;
*y = device->abs.y;
return;
} else {
*x = device->abs.x * device->abs.calibration[0] +
device->abs.y * device->abs.calibration[1] +
device->abs.calibration[2];
*y = device->abs.x * device->abs.calibration[3] +
device->abs.y * device->abs.calibration[4] +
device->abs.calibration[5];
}
}
static void
evdev_flush_pending_event(struct evdev_device *device, uint32_t time)
{
struct weston_seat *master = device->seat;
wl_fixed_t x, y;
int32_t cx, cy;
int slot, seat_slot;
slot = device->mt.slot;
switch (device->pending_event) {
case EVDEV_NONE:
return;
case EVDEV_RELATIVE_MOTION:
notify_motion(master, time, device->rel.dx, device->rel.dy);
device->rel.dx = 0;
device->rel.dy = 0;
break;
case EVDEV_ABSOLUTE_MT_DOWN:
if (device->output == NULL)
break;
weston_output_transform_coordinate(device->output,
wl_fixed_from_int(device->mt.slots[slot].x),
wl_fixed_from_int(device->mt.slots[slot].y),
&x, &y);
seat_slot = ffs(~master->slot_map) - 1;
device->mt.slots[slot].seat_slot = seat_slot;
master->slot_map |= 1 << seat_slot;
notify_touch(master, time, seat_slot, x, y, WL_TOUCH_DOWN);
break;
case EVDEV_ABSOLUTE_MT_MOTION:
if (device->output == NULL)
break;
weston_output_transform_coordinate(device->output,
wl_fixed_from_int(device->mt.slots[slot].x),
wl_fixed_from_int(device->mt.slots[slot].y),
&x, &y);
seat_slot = device->mt.slots[slot].seat_slot;
notify_touch(master, time, seat_slot, x, y, WL_TOUCH_MOTION);
break;
case EVDEV_ABSOLUTE_MT_UP:
seat_slot = device->mt.slots[slot].seat_slot;
master->slot_map &= ~(1 << seat_slot);
notify_touch(master, time, seat_slot, 0, 0, WL_TOUCH_UP);
break;
case EVDEV_ABSOLUTE_TOUCH_DOWN:
if (device->output == NULL)
break;
transform_absolute(device, &cx, &cy);
weston_output_transform_coordinate(device->output,
wl_fixed_from_int(cx),
wl_fixed_from_int(cy),
&x, &y);
seat_slot = ffs(~master->slot_map) - 1;
device->abs.seat_slot = seat_slot;
master->slot_map |= 1 << seat_slot;
notify_touch(master, time, seat_slot, x, y, WL_TOUCH_DOWN);
break;
case EVDEV_ABSOLUTE_MOTION:
if (device->output == NULL)
break;
transform_absolute(device, &cx, &cy);
weston_output_transform_coordinate(device->output,
wl_fixed_from_int(cx),
wl_fixed_from_int(cy),
&x, &y);
if (device->seat_caps & EVDEV_SEAT_TOUCH)
notify_touch(master, time, device->abs.seat_slot,
x, y, WL_TOUCH_MOTION);
else if (device->seat_caps & EVDEV_SEAT_POINTER)
notify_motion_absolute(master, time, x, y);
break;
case EVDEV_ABSOLUTE_TOUCH_UP:
seat_slot = device->abs.seat_slot;
master->slot_map &= ~(1 << seat_slot);
notify_touch(master, time, seat_slot, 0, 0, WL_TOUCH_UP);
break;
default:
assert(0 && "Unknown pending event type");
}
device->pending_event = EVDEV_NONE;
}
static void
evdev_process_touch_button(struct evdev_device *device, int time, int value)
{
if (device->pending_event != EVDEV_NONE &&
device->pending_event != EVDEV_ABSOLUTE_MOTION)
evdev_flush_pending_event(device, time);
device->pending_event = (value ?
EVDEV_ABSOLUTE_TOUCH_DOWN :
EVDEV_ABSOLUTE_TOUCH_UP);
}
static inline void
evdev_process_key(struct evdev_device *device, struct input_event *e, int time)
{
/* ignore kernel key repeat */
if (e->value == 2)
return;
if (e->code == BTN_TOUCH) {
if (!device->is_mt)
evdev_process_touch_button(device, time, e->value);
return;
}
evdev_flush_pending_event(device, time);
switch (e->code) {
case BTN_LEFT:
case BTN_RIGHT:
case BTN_MIDDLE:
case BTN_SIDE:
case BTN_EXTRA:
case BTN_FORWARD:
case BTN_BACK:
case BTN_TASK:
notify_button(device->seat,
time, e->code,
e->value ? WL_POINTER_BUTTON_STATE_PRESSED :
WL_POINTER_BUTTON_STATE_RELEASED);
break;
default:
notify_key(device->seat,
time, e->code,
e->value ? WL_KEYBOARD_KEY_STATE_PRESSED :
WL_KEYBOARD_KEY_STATE_RELEASED,
STATE_UPDATE_AUTOMATIC);
break;
}
}
static void
evdev_process_touch(struct evdev_device *device,
struct input_event *e,
uint32_t time)
{
int screen_width, screen_height;
if (device->output == NULL)
return;
screen_width = device->output->current_mode->width;
screen_height = device->output->current_mode->height;
switch (e->code) {
case ABS_MT_SLOT:
evdev_flush_pending_event(device, time);
device->mt.slot = e->value;
break;
case ABS_MT_TRACKING_ID:
if (device->pending_event != EVDEV_NONE &&
device->pending_event != EVDEV_ABSOLUTE_MT_MOTION)
evdev_flush_pending_event(device, time);
if (e->value >= 0)
device->pending_event = EVDEV_ABSOLUTE_MT_DOWN;
else
device->pending_event = EVDEV_ABSOLUTE_MT_UP;
break;
case ABS_MT_POSITION_X:
device->mt.slots[device->mt.slot].x =
(e->value - device->abs.min_x) * screen_width /
(device->abs.max_x - device->abs.min_x);
if (device->pending_event == EVDEV_NONE)
device->pending_event = EVDEV_ABSOLUTE_MT_MOTION;
break;
case ABS_MT_POSITION_Y:
device->mt.slots[device->mt.slot].y =
(e->value - device->abs.min_y) * screen_height /
(device->abs.max_y - device->abs.min_y);
if (device->pending_event == EVDEV_NONE)
device->pending_event = EVDEV_ABSOLUTE_MT_MOTION;
break;
}
}
static inline void
evdev_process_absolute_motion(struct evdev_device *device,
struct input_event *e)
{
int screen_width, screen_height;
if (device->output == NULL)
return;
screen_width = device->output->current_mode->width;
screen_height = device->output->current_mode->height;
switch (e->code) {
case ABS_X:
device->abs.x =
(e->value - device->abs.min_x) * screen_width /
(device->abs.max_x - device->abs.min_x);
if (device->pending_event == EVDEV_NONE)
device->pending_event = EVDEV_ABSOLUTE_MOTION;
break;
case ABS_Y:
device->abs.y =
(e->value - device->abs.min_y) * screen_height /
(device->abs.max_y - device->abs.min_y);
if (device->pending_event == EVDEV_NONE)
device->pending_event = EVDEV_ABSOLUTE_MOTION;
break;
}
}
static inline void
evdev_process_relative(struct evdev_device *device,
struct input_event *e, uint32_t time)
{
switch (e->code) {
case REL_X:
if (device->pending_event != EVDEV_RELATIVE_MOTION)
evdev_flush_pending_event(device, time);
device->rel.dx += wl_fixed_from_int(e->value);
device->pending_event = EVDEV_RELATIVE_MOTION;
break;
case REL_Y:
if (device->pending_event != EVDEV_RELATIVE_MOTION)
evdev_flush_pending_event(device, time);
device->rel.dy += wl_fixed_from_int(e->value);
device->pending_event = EVDEV_RELATIVE_MOTION;
break;
case REL_WHEEL:
evdev_flush_pending_event(device, time);
switch (e->value) {
case -1:
/* Scroll down */
case 1:
/* Scroll up */
notify_axis(device->seat,
time,
WL_POINTER_AXIS_VERTICAL_SCROLL,
-1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
break;
default:
break;
}
break;
case REL_HWHEEL:
evdev_flush_pending_event(device, time);
switch (e->value) {
case -1:
/* Scroll left */
case 1:
/* Scroll right */
notify_axis(device->seat,
time,
WL_POINTER_AXIS_HORIZONTAL_SCROLL,
e->value * DEFAULT_AXIS_STEP_DISTANCE);
break;
default:
break;
}
}
}
static inline void
evdev_process_absolute(struct evdev_device *device,
struct input_event *e,
uint32_t time)
{
if (device->is_mt) {
evdev_process_touch(device, e, time);
} else {
evdev_process_absolute_motion(device, e);
}
}
static void
fallback_process(struct evdev_dispatch *dispatch,
struct evdev_device *device,
struct input_event *event,
uint32_t time)
{
switch (event->type) {
case EV_REL:
evdev_process_relative(device, event, time);
break;
case EV_ABS:
evdev_process_absolute(device, event, time);
break;
case EV_KEY:
evdev_process_key(device, event, time);
break;
case EV_SYN:
evdev_flush_pending_event(device, time);
break;
}
}
static void
fallback_destroy(struct evdev_dispatch *dispatch)
{
free(dispatch);
}
struct evdev_dispatch_interface fallback_interface = {
fallback_process,
fallback_destroy
};
static struct evdev_dispatch *
fallback_dispatch_create(void)
{
struct evdev_dispatch *dispatch = malloc(sizeof *dispatch);
if (dispatch == NULL)
return NULL;
dispatch->interface = &fallback_interface;
return dispatch;
}
static void
evdev_process_events(struct evdev_device *device,
struct input_event *ev, int count)
{
struct evdev_dispatch *dispatch = device->dispatch;
struct input_event *e, *end;
uint32_t time = 0;
e = ev;
end = e + count;
for (e = ev; e < end; e++) {
time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
dispatch->interface->process(dispatch, device, e, time);
}
}
static int
evdev_device_data(int fd, uint32_t mask, void *data)
{
struct weston_compositor *ec;
struct evdev_device *device = data;
struct input_event ev[32];
int len;
ec = device->seat->compositor;
if (!ec->session_active)
return 1;
/* If the compositor is repainting, this function is called only once
* per frame and we have to process all the events available on the
* fd, otherwise there will be input lag. */
do {
if (device->mtdev)
len = mtdev_get(device->mtdev, fd, ev,
ARRAY_LENGTH(ev)) *
sizeof (struct input_event);
else
len = read(fd, &ev, sizeof ev);
if (len < 0 || len % sizeof ev[0] != 0) {
if (len < 0 && errno != EAGAIN && errno != EINTR) {
weston_log("device %s died\n",
device->devnode);
wl_event_source_remove(device->source);
device->source = NULL;
}
return 1;
}
evdev_process_events(device, ev, len / sizeof ev[0]);
} while (len > 0);
return 1;
}
static int
evdev_configure_device(struct evdev_device *device)
{
struct input_absinfo absinfo;
unsigned long ev_bits[NBITS(EV_MAX)];
unsigned long abs_bits[NBITS(ABS_MAX)];
unsigned long rel_bits[NBITS(REL_MAX)];
unsigned long key_bits[NBITS(KEY_MAX)];
int has_abs, has_rel, has_mt;
int has_button, has_keyboard, has_touch;
unsigned int i;
has_rel = 0;
has_abs = 0;
has_mt = 0;
has_button = 0;
has_keyboard = 0;
has_touch = 0;
ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
if (TEST_BIT(ev_bits, EV_ABS)) {
ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
abs_bits);
if (TEST_BIT(abs_bits, ABS_X)) {
ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
device->abs.min_x = absinfo.minimum;
device->abs.max_x = absinfo.maximum;
has_abs = 1;
}
if (TEST_BIT(abs_bits, ABS_Y)) {
ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo);
device->abs.min_y = absinfo.minimum;
device->abs.max_y = absinfo.maximum;
has_abs = 1;
}
/* We only handle the slotted Protocol B in weston.
Devices with ABS_MT_POSITION_* but not ABS_MT_SLOT
require mtdev for conversion. */
if (TEST_BIT(abs_bits, ABS_MT_POSITION_X) &&
TEST_BIT(abs_bits, ABS_MT_POSITION_Y)) {
ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X),
&absinfo);
device->abs.min_x = absinfo.minimum;
device->abs.max_x = absinfo.maximum;
ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y),
&absinfo);
device->abs.min_y = absinfo.minimum;
device->abs.max_y = absinfo.maximum;
device->is_mt = 1;
has_touch = 1;
has_mt = 1;
if (!TEST_BIT(abs_bits, ABS_MT_SLOT)) {
device->mtdev = mtdev_new_open(device->fd);
if (!device->mtdev) {
weston_log("mtdev required but failed to open for %s\n",
device->devnode);
return 0;
}
device->mt.slot = device->mtdev->caps.slot.value;
} else {
ioctl(device->fd, EVIOCGABS(ABS_MT_SLOT),
&absinfo);
device->mt.slot = absinfo.value;
}
}
}
if (TEST_BIT(ev_bits, EV_REL)) {
ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)),
rel_bits);
if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y))
has_rel = 1;
}
if (TEST_BIT(ev_bits, EV_KEY)) {
ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)),
key_bits);
if (TEST_BIT(key_bits, BTN_TOOL_FINGER) &&
!TEST_BIT(key_bits, BTN_TOOL_PEN) &&
(has_abs || has_mt)) {
device->dispatch = evdev_touchpad_create(device);
weston_log("input device %s, %s is a touchpad\n",
device->devname, device->devnode);
}
for (i = KEY_ESC; i < KEY_MAX; i++) {
if (i >= BTN_MISC && i < KEY_OK)
continue;
if (TEST_BIT(key_bits, i)) {
has_keyboard = 1;
break;
}
}
if (TEST_BIT(key_bits, BTN_TOUCH))
has_touch = 1;
for (i = BTN_MISC; i < BTN_JOYSTICK; i++) {
if (TEST_BIT(key_bits, i)) {
has_button = 1;
break;
}
}
}
if (TEST_BIT(ev_bits, EV_LED))
has_keyboard = 1;
if ((has_abs || has_rel) && has_button) {
weston_seat_init_pointer(device->seat);
device->seat_caps |= EVDEV_SEAT_POINTER;
weston_log("input device %s, %s is a pointer caps =%s%s%s\n",
device->devname, device->devnode,
has_abs ? " absolute-motion" : "",
has_rel ? " relative-motion": "",
has_button ? " button" : "");
}
if (has_keyboard) {
if (weston_seat_init_keyboard(device->seat, NULL) < 0)
return -1;
device->seat_caps |= EVDEV_SEAT_KEYBOARD;
weston_log("input device %s, %s is a keyboard\n",
device->devname, device->devnode);
}
if (has_touch && !has_button) {
weston_seat_init_touch(device->seat);
device->seat_caps |= EVDEV_SEAT_TOUCH;
weston_log("input device %s, %s is a touch device\n",
device->devname, device->devnode);
}
return 0;
}
static void
notify_output_destroy(struct wl_listener *listener, void *data)
{
struct evdev_device *device =
container_of(listener,
struct evdev_device, output_destroy_listener);
struct weston_compositor *c = device->seat->compositor;
struct weston_output *output;
if (!device->output_name && !wl_list_empty(&c->output_list)) {
output = container_of(c->output_list.next,
struct weston_output, link);
evdev_device_set_output(device, output);
} else {
device->output = NULL;
}
}
void
evdev_device_set_output(struct evdev_device *device,
struct weston_output *output)
{
if (device->output_destroy_listener.notify) {
wl_list_remove(&device->output_destroy_listener.link);
device->output_destroy_listener.notify = NULL;
}
device->output = output;
device->output_destroy_listener.notify = notify_output_destroy;
wl_signal_add(&output->destroy_signal,
&device->output_destroy_listener);
}
struct evdev_device *
evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
{
struct evdev_device *device;
struct weston_compositor *ec;
char devname[256] = "unknown";
device = zalloc(sizeof *device);
if (device == NULL)
return NULL;
ec = seat->compositor;
device->seat = seat;
device->seat_caps = 0;
device->is_mt = 0;
device->mtdev = NULL;
device->devnode = strdup(path);
device->mt.slot = -1;
device->rel.dx = 0;
device->rel.dy = 0;
device->dispatch = NULL;
device->fd = device_fd;
device->pending_event = EVDEV_NONE;
wl_list_init(&device->link);
ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
devname[sizeof(devname) - 1] = '\0';
device->devname = strdup(devname);
if (evdev_configure_device(device) == -1)
goto err;
if (device->seat_caps == 0) {
evdev_device_destroy(device);
return EVDEV_UNHANDLED_DEVICE;
}
/* If the dispatch was not set up use the fallback. */
if (device->dispatch == NULL)
device->dispatch = fallback_dispatch_create();
if (device->dispatch == NULL)
goto err;
device->source = wl_event_loop_add_fd(ec->input_loop, device->fd,
WL_EVENT_READABLE,
evdev_device_data, device);
if (device->source == NULL)
goto err;
return device;
err:
evdev_device_destroy(device);
return NULL;
}
void
evdev_device_destroy(struct evdev_device *device)
{
struct evdev_dispatch *dispatch;
if (device->seat_caps & EVDEV_SEAT_POINTER)
weston_seat_release_pointer(device->seat);
if (device->seat_caps & EVDEV_SEAT_KEYBOARD)
weston_seat_release_keyboard(device->seat);
if (device->seat_caps & EVDEV_SEAT_TOUCH)
weston_seat_release_touch(device->seat);
dispatch = device->dispatch;
if (dispatch)
dispatch->interface->destroy(dispatch);
if (device->source)
wl_event_source_remove(device->source);
if (device->output)
wl_list_remove(&device->output_destroy_listener.link);
wl_list_remove(&device->link);
if (device->mtdev)
mtdev_close_delete(device->mtdev);
close(device->fd);
free(device->devname);
free(device->devnode);
free(device->output_name);
free(device);
}
void
evdev_notify_keyboard_focus(struct weston_seat *seat,
struct wl_list *evdev_devices)
{
struct evdev_device *device;
struct wl_array keys;
unsigned int i, set;
char evdev_keys[(KEY_CNT + 7) / 8];
char all_keys[(KEY_CNT + 7) / 8];
uint32_t *k;
int ret;
if (!seat->keyboard_device_count > 0)
return;
memset(all_keys, 0, sizeof all_keys);
wl_list_for_each(device, evdev_devices, link) {
memset(evdev_keys, 0, sizeof evdev_keys);
ret = ioctl(device->fd,
EVIOCGKEY(sizeof evdev_keys), evdev_keys);
if (ret < 0) {
weston_log("failed to get keys for device %s\n",
device->devnode);
continue;
}
for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
all_keys[i] |= evdev_keys[i];
}
wl_array_init(&keys);
for (i = 0; i < KEY_CNT; i++) {
set = all_keys[i >> 3] & (1 << (i & 7));
if (set) {
k = wl_array_add(&keys, sizeof *k);
*k = i;
}
}
notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
wl_array_release(&keys);
}

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/*
* Copyright © 2011, 2012 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 EVDEV_H
#define EVDEV_H
#include "config.h"
#include <linux/input.h>
#include <wayland-util.h>
#define MAX_SLOTS 16
enum evdev_event_type {
EVDEV_NONE,
EVDEV_ABSOLUTE_TOUCH_DOWN,
EVDEV_ABSOLUTE_MOTION,
EVDEV_ABSOLUTE_TOUCH_UP,
EVDEV_ABSOLUTE_MT_DOWN,
EVDEV_ABSOLUTE_MT_MOTION,
EVDEV_ABSOLUTE_MT_UP,
EVDEV_RELATIVE_MOTION,
};
enum evdev_device_seat_capability {
EVDEV_SEAT_POINTER = (1 << 0),
EVDEV_SEAT_KEYBOARD = (1 << 1),
EVDEV_SEAT_TOUCH = (1 << 2)
};
struct evdev_device {
struct weston_seat *seat;
struct wl_list link;
struct wl_event_source *source;
struct weston_output *output;
struct evdev_dispatch *dispatch;
struct wl_listener output_destroy_listener;
char *devnode;
char *devname;
char *output_name;
int fd;
struct {
int min_x, max_x, min_y, max_y;
uint32_t seat_slot;
int32_t x, y;
int apply_calibration;
float calibration[6];
} abs;
struct {
int slot;
struct {
int32_t x, y;
uint32_t seat_slot;
} slots[MAX_SLOTS];
} mt;
struct mtdev *mtdev;
struct {
wl_fixed_t dx, dy;
} rel;
enum evdev_event_type pending_event;
enum evdev_device_seat_capability seat_caps;
int is_mt;
};
/* copied from udev/extras/input_id/input_id.c */
/* we must use this kernel-compatible implementation */
#define BITS_PER_LONG (sizeof(unsigned long) * 8)
#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
#define OFF(x) ((x)%BITS_PER_LONG)
#define BIT(x) (1UL<<OFF(x))
#define LONG(x) ((x)/BITS_PER_LONG)
#define TEST_BIT(array, bit) ((array[LONG(bit)] >> OFF(bit)) & 1)
/* end copied */
#define EVDEV_UNHANDLED_DEVICE ((struct evdev_device *) 1)
struct evdev_dispatch;
struct evdev_dispatch_interface {
/* Process an evdev input event. */
void (*process)(struct evdev_dispatch *dispatch,
struct evdev_device *device,
struct input_event *event,
uint32_t time);
/* Destroy an event dispatch handler and free all its resources. */
void (*destroy)(struct evdev_dispatch *dispatch);
};
struct evdev_dispatch {
struct evdev_dispatch_interface *interface;
};
struct evdev_dispatch *
evdev_touchpad_create(struct evdev_device *device);
void
evdev_led_update(struct evdev_device *device, enum weston_led leds);
struct evdev_device *
evdev_device_create(struct weston_seat *seat, const char *path, int device_fd);
void
evdev_device_set_output(struct evdev_device *device,
struct weston_output *output);
void
evdev_device_destroy(struct evdev_device *device);
void
evdev_notify_keyboard_focus(struct weston_seat *seat,
struct wl_list *evdev_devices);
#endif /* EVDEV_H */

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/*
* Copyright © 2012 Jonas Ådahl
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 "config.h"
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include <math.h>
#include <wayland-util.h>
#include "compositor.h"
#include "filter.h"
WL_EXPORT void
weston_filter_dispatch(struct weston_motion_filter *filter,
struct weston_motion_params *motion,
void *data, uint32_t time)
{
filter->interface->filter(filter, motion, data, time);
}
/*
* Pointer acceleration filter
*/
#define MAX_VELOCITY_DIFF 1.0
#define MOTION_TIMEOUT 300 /* (ms) */
#define NUM_POINTER_TRACKERS 16
struct pointer_tracker {
double dx;
double dy;
uint32_t time;
int dir;
};
struct pointer_accelerator;
struct pointer_accelerator {
struct weston_motion_filter base;
accel_profile_func_t profile;
double velocity;
double last_velocity;
int last_dx;
int last_dy;
struct pointer_tracker *trackers;
int cur_tracker;
};
enum directions {
N = 1 << 0,
NE = 1 << 1,
E = 1 << 2,
SE = 1 << 3,
S = 1 << 4,
SW = 1 << 5,
W = 1 << 6,
NW = 1 << 7,
UNDEFINED_DIRECTION = 0xff
};
static int
get_direction(int dx, int dy)
{
int dir = UNDEFINED_DIRECTION;
int d1, d2;
double r;
if (abs(dx) < 2 && abs(dy) < 2) {
if (dx > 0 && dy > 0)
dir = S | SE | E;
else if (dx > 0 && dy < 0)
dir = N | NE | E;
else if (dx < 0 && dy > 0)
dir = S | SW | W;
else if (dx < 0 && dy < 0)
dir = N | NW | W;
else if (dx > 0)
dir = NW | W | SW;
else if (dx < 0)
dir = NE | E | SE;
else if (dy > 0)
dir = SE | S | SW;
else if (dy < 0)
dir = NE | N | NW;
}
else {
/* Calculate r within the interval [0 to 8)
*
* r = [0 .. 2π] where 0 is North
* d_f = r / 2π ([0 .. 1))
* d_8 = 8 * d_f
*/
r = atan2(dy, dx);
r = fmod(r + 2.5*M_PI, 2*M_PI);
r *= 4*M_1_PI;
/* Mark one or two close enough octants */
d1 = (int)(r + 0.9) % 8;
d2 = (int)(r + 0.1) % 8;
dir = (1 << d1) | (1 << d2);
}
return dir;
}
static void
feed_trackers(struct pointer_accelerator *accel,
double dx, double dy,
uint32_t time)
{
int i, current;
struct pointer_tracker *trackers = accel->trackers;
for (i = 0; i < NUM_POINTER_TRACKERS; i++) {
trackers[i].dx += dx;
trackers[i].dy += dy;
}
current = (accel->cur_tracker + 1) % NUM_POINTER_TRACKERS;
accel->cur_tracker = current;
trackers[current].dx = 0.0;
trackers[current].dy = 0.0;
trackers[current].time = time;
trackers[current].dir = get_direction(dx, dy);
}
static struct pointer_tracker *
tracker_by_offset(struct pointer_accelerator *accel, unsigned int offset)
{
unsigned int index =
(accel->cur_tracker + NUM_POINTER_TRACKERS - offset)
% NUM_POINTER_TRACKERS;
return &accel->trackers[index];
}
static double
calculate_tracker_velocity(struct pointer_tracker *tracker, uint32_t time)
{
int dx;
int dy;
double distance;
dx = tracker->dx;
dy = tracker->dy;
distance = sqrt(dx*dx + dy*dy);
return distance / (double)(time - tracker->time);
}
static double
calculate_velocity(struct pointer_accelerator *accel, uint32_t time)
{
struct pointer_tracker *tracker;
double velocity;
double result = 0.0;
double initial_velocity;
double velocity_diff;
unsigned int offset;
unsigned int dir = tracker_by_offset(accel, 0)->dir;
/* Find first velocity */
for (offset = 1; offset < NUM_POINTER_TRACKERS; offset++) {
tracker = tracker_by_offset(accel, offset);
if (time <= tracker->time)
continue;
result = initial_velocity =
calculate_tracker_velocity(tracker, time);
if (initial_velocity > 0.0)
break;
}
/* Find least recent vector within a timelimit, maximum velocity diff
* and direction threshold. */
for (; offset < NUM_POINTER_TRACKERS; offset++) {
tracker = tracker_by_offset(accel, offset);
/* Stop if too far away in time */
if (time - tracker->time > MOTION_TIMEOUT ||
tracker->time > time)
break;
/* Stop if direction changed */
dir &= tracker->dir;
if (dir == 0)
break;
velocity = calculate_tracker_velocity(tracker, time);
/* Stop if velocity differs too much from initial */
velocity_diff = fabs(initial_velocity - velocity);
if (velocity_diff > MAX_VELOCITY_DIFF)
break;
result = velocity;
}
return result;
}
static double
acceleration_profile(struct pointer_accelerator *accel,
void *data, double velocity, uint32_t time)
{
return accel->profile(&accel->base, data, velocity, time);
}
static double
calculate_acceleration(struct pointer_accelerator *accel,
void *data, double velocity, uint32_t time)
{
double factor;
/* Use Simpson's rule to calculate the avarage acceleration between
* the previous motion and the most recent. */
factor = acceleration_profile(accel, data, velocity, time);
factor += acceleration_profile(accel, data, accel->last_velocity, time);
factor += 4.0 *
acceleration_profile(accel, data,
(accel->last_velocity + velocity) / 2,
time);
factor = factor / 6.0;
return factor;
}
static double
soften_delta(double last_delta, double delta)
{
if (delta < -1.0 || delta > 1.0) {
if (delta > last_delta)
return delta - 0.5;
else if (delta < last_delta)
return delta + 0.5;
}
return delta;
}
static void
apply_softening(struct pointer_accelerator *accel,
struct weston_motion_params *motion)
{
motion->dx = soften_delta(accel->last_dx, motion->dx);
motion->dy = soften_delta(accel->last_dy, motion->dy);
}
static void
accelerator_filter(struct weston_motion_filter *filter,
struct weston_motion_params *motion,
void *data, uint32_t time)
{
struct pointer_accelerator *accel =
(struct pointer_accelerator *) filter;
double velocity;
double accel_value;
feed_trackers(accel, motion->dx, motion->dy, time);
velocity = calculate_velocity(accel, time);
accel_value = calculate_acceleration(accel, data, velocity, time);
motion->dx = accel_value * motion->dx;
motion->dy = accel_value * motion->dy;
apply_softening(accel, motion);
accel->last_dx = motion->dx;
accel->last_dy = motion->dy;
accel->last_velocity = velocity;
}
static void
accelerator_destroy(struct weston_motion_filter *filter)
{
struct pointer_accelerator *accel =
(struct pointer_accelerator *) filter;
free(accel->trackers);
free(accel);
}
struct weston_motion_filter_interface accelerator_interface = {
accelerator_filter,
accelerator_destroy
};
WL_EXPORT struct weston_motion_filter *
create_pointer_accelator_filter(accel_profile_func_t profile)
{
struct pointer_accelerator *filter;
filter = malloc(sizeof *filter);
if (filter == NULL)
return NULL;
filter->base.interface = &accelerator_interface;
filter->profile = profile;
filter->last_velocity = 0.0;
filter->last_dx = 0;
filter->last_dy = 0;
filter->trackers =
calloc(NUM_POINTER_TRACKERS, sizeof *filter->trackers);
filter->cur_tracker = 0;
return &filter->base;
}

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/*
* Copyright © 2012 Jonas Ådahl
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 _FILTER_H_
#define _FILTER_H_
#include "config.h"
#include <wayland-util.h>
#include "compositor.h"
struct weston_motion_params {
double dx, dy;
};
struct weston_motion_filter;
void
weston_filter_dispatch(struct weston_motion_filter *filter,
struct weston_motion_params *motion,
void *data, uint32_t time);
struct weston_motion_filter_interface {
void (*filter)(struct weston_motion_filter *filter,
struct weston_motion_params *motion,
void *data, uint32_t time);
void (*destroy)(struct weston_motion_filter *filter);
};
struct weston_motion_filter {
struct weston_motion_filter_interface *interface;
};
typedef double (*accel_profile_func_t)(struct weston_motion_filter *filter,
void *data,
double velocity,
uint32_t time);
struct weston_motion_filter *
create_pointer_accelator_filter(accel_profile_func_t filter);
#endif // _FILTER_H_

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/*
* Copyright © 2014 Jonas Ådahl
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 _UDEV_INPUT_H_
#define _UDEV_INPUT_H_
#include "config.h"
#ifdef BUILD_LIBINPUT_BACKEND
#include "libinput-seat.h"
#else
#include "udev-seat.h"
#endif
#endif

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/*
* Copyright © 2013 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 "config.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "compositor.h"
#include "launcher-util.h"
#include "evdev.h"
#include "udev-seat.h"
static const char default_seat[] = "seat0";
static const char default_seat_name[] = "default";
static void
udev_seat_destroy(struct udev_seat *seat);
static int
device_added(struct udev_device *udev_device, struct udev_input *input)
{
struct weston_compositor *c;
struct evdev_device *device;
struct weston_output *output;
const char *devnode;
const char *device_seat, *seat_name, *output_name;
const char *calibration_values;
int fd;
struct udev_seat *seat;
device_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
if (!device_seat)
device_seat = default_seat;
if (strcmp(device_seat, input->seat_id))
return 0;
c = input->compositor;
devnode = udev_device_get_devnode(udev_device);
/* Search for matching logical seat */
seat_name = udev_device_get_property_value(udev_device, "WL_SEAT");
if (!seat_name)
seat_name = default_seat_name;
seat = udev_seat_get_named(input, seat_name);
if (seat == NULL)
return -1;
/* Use non-blocking mode so that we can loop on read on
* evdev_device_data() until all events on the fd are
* read. mtdev_get() also expects this. */
fd = weston_launcher_open(c->launcher, devnode, O_RDWR | O_NONBLOCK);
if (fd < 0) {
weston_log("opening input device '%s' failed.\n", devnode);
return 0;
}
device = evdev_device_create(&seat->base, devnode, fd);
if (device == EVDEV_UNHANDLED_DEVICE) {
weston_launcher_close(c->launcher, fd);
weston_log("not using input device '%s'.\n", devnode);
return 0;
} else if (device == NULL) {
weston_launcher_close(c->launcher, fd);
weston_log("failed to create input device '%s'.\n", devnode);
return 0;
}
calibration_values =
udev_device_get_property_value(udev_device,
"WL_CALIBRATION");
if (calibration_values && sscanf(calibration_values,
"%f %f %f %f %f %f",
&device->abs.calibration[0],
&device->abs.calibration[1],
&device->abs.calibration[2],
&device->abs.calibration[3],
&device->abs.calibration[4],
&device->abs.calibration[5]) == 6) {
device->abs.apply_calibration = 1;
weston_log ("Applying calibration: %f %f %f %f %f %f\n",
device->abs.calibration[0],
device->abs.calibration[1],
device->abs.calibration[2],
device->abs.calibration[3],
device->abs.calibration[4],
device->abs.calibration[5]);
}
wl_list_insert(seat->devices_list.prev, &device->link);
if (seat->base.output && seat->base.pointer)
weston_pointer_clamp(seat->base.pointer,
&seat->base.pointer->x,
&seat->base.pointer->y);
output_name = udev_device_get_property_value(udev_device, "WL_OUTPUT");
if (output_name) {
device->output_name = strdup(output_name);
wl_list_for_each(output, &c->output_list, link)
if (strcmp(output->name, device->output_name) == 0)
evdev_device_set_output(device, output);
} else if (device->output == NULL && !wl_list_empty(&c->output_list)) {
output = container_of(c->output_list.next,
struct weston_output, link);
evdev_device_set_output(device, output);
}
if (input->enabled == 1)
weston_seat_repick(&seat->base);
return 0;
}
static int
udev_input_add_devices(struct udev_input *input, struct udev *udev)
{
struct udev_enumerate *e;
struct udev_list_entry *entry;
struct udev_device *device;
const char *path, *sysname;
struct udev_seat *seat;
int devices_found = 0;
e = udev_enumerate_new(udev);
udev_enumerate_add_match_subsystem(e, "input");
udev_enumerate_scan_devices(e);
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
path = udev_list_entry_get_name(entry);
device = udev_device_new_from_syspath(udev, path);
sysname = udev_device_get_sysname(device);
if (strncmp("event", sysname, 5) != 0) {
udev_device_unref(device);
continue;
}
if (device_added(device, input) < 0) {
udev_device_unref(device);
udev_enumerate_unref(e);
return -1;
}
udev_device_unref(device);
}
udev_enumerate_unref(e);
wl_list_for_each(seat, &input->compositor->seat_list, base.link) {
evdev_notify_keyboard_focus(&seat->base, &seat->devices_list);
if (!wl_list_empty(&seat->devices_list))
devices_found = 1;
}
if (devices_found == 0) {
weston_log(
"warning: no input devices on entering Weston. "
"Possible causes:\n"
"\t- no permissions to read /dev/input/event*\n"
"\t- seats misconfigured "
"(Weston backend option 'seat', "
"udev device property ID_SEAT)\n");
return -1;
}
return 0;
}
static int
evdev_udev_handler(int fd, uint32_t mask, void *data)
{
struct udev_input *input = data;
struct udev_device *udev_device;
struct evdev_device *device, *next;
const char *action;
const char *devnode;
struct udev_seat *seat;
udev_device = udev_monitor_receive_device(input->udev_monitor);
if (!udev_device)
return 1;
action = udev_device_get_action(udev_device);
if (!action)
goto out;
if (strncmp("event", udev_device_get_sysname(udev_device), 5) != 0)
goto out;
if (!strcmp(action, "add")) {
device_added(udev_device, input);
}
else if (!strcmp(action, "remove")) {
devnode = udev_device_get_devnode(udev_device);
wl_list_for_each(seat, &input->compositor->seat_list, base.link) {
wl_list_for_each_safe(device, next, &seat->devices_list, link)
if (!strcmp(device->devnode, devnode)) {
weston_log("input device %s, %s removed\n",
device->devname, device->devnode);
weston_launcher_close(input->compositor->launcher,
device->fd);
evdev_device_destroy(device);
break;
}
}
}
out:
udev_device_unref(udev_device);
return 0;
}
int
udev_input_enable(struct udev_input *input)
{
struct wl_event_loop *loop;
struct weston_compositor *c = input->compositor;
int fd;
input->udev_monitor = udev_monitor_new_from_netlink(input->udev, "udev");
if (!input->udev_monitor) {
weston_log("udev: failed to create the udev monitor\n");
return -1;
}
udev_monitor_filter_add_match_subsystem_devtype(input->udev_monitor,
"input", NULL);
if (udev_monitor_enable_receiving(input->udev_monitor)) {
weston_log("udev: failed to bind the udev monitor\n");
udev_monitor_unref(input->udev_monitor);
return -1;
}
loop = wl_display_get_event_loop(c->wl_display);
fd = udev_monitor_get_fd(input->udev_monitor);
input->udev_monitor_source =
wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE,
evdev_udev_handler, input);
if (!input->udev_monitor_source) {
udev_monitor_unref(input->udev_monitor);
return -1;
}
if (udev_input_add_devices(input, input->udev) < 0)
return -1;
input->enabled = 1;
return 0;
}
static void
udev_input_remove_devices(struct udev_input *input)
{
struct evdev_device *device, *next;
struct udev_seat *seat;
wl_list_for_each(seat, &input->compositor->seat_list, base.link) {
wl_list_for_each_safe(device, next, &seat->devices_list, link) {
weston_launcher_close(input->compositor->launcher,
device->fd);
evdev_device_destroy(device);
}
if (seat->base.keyboard)
notify_keyboard_focus_out(&seat->base);
}
}
void
udev_input_disable(struct udev_input *input)
{
if (!input->udev_monitor)
return;
udev_monitor_unref(input->udev_monitor);
input->udev_monitor = NULL;
wl_event_source_remove(input->udev_monitor_source);
input->udev_monitor_source = NULL;
udev_input_remove_devices(input);
}
int
udev_input_init(struct udev_input *input, struct weston_compositor *c, struct udev *udev,
const char *seat_id)
{
memset(input, 0, sizeof *input);
input->seat_id = strdup(seat_id);
input->compositor = c;
input->udev = udev;
input->udev = udev_ref(udev);
if (udev_input_enable(input) < 0)
goto err;
return 0;
err:
free(input->seat_id);
return -1;
}
void
udev_input_destroy(struct udev_input *input)
{
struct udev_seat *seat, *next;
udev_input_disable(input);
wl_list_for_each_safe(seat, next, &input->compositor->seat_list, base.link)
udev_seat_destroy(seat);
udev_unref(input->udev);
free(input->seat_id);
}
static void
drm_led_update(struct weston_seat *seat_base, enum weston_led leds)
{
struct udev_seat *seat = (struct udev_seat *) seat_base;
struct evdev_device *device;
wl_list_for_each(device, &seat->devices_list, link)
evdev_led_update(device, leds);
}
static void
notify_output_create(struct wl_listener *listener, void *data)
{
struct udev_seat *seat = container_of(listener, struct udev_seat,
output_create_listener);
struct evdev_device *device;
struct weston_output *output = data;
wl_list_for_each(device, &seat->devices_list, link) {
if (device->output_name &&
strcmp(output->name, device->output_name) == 0) {
evdev_device_set_output(device, output);
}
if (device->output_name == NULL && device->output == NULL)
evdev_device_set_output(device, output);
}
}
static struct udev_seat *
udev_seat_create(struct udev_input *input, const char *seat_name)
{
struct weston_compositor *c = input->compositor;
struct udev_seat *seat;
seat = zalloc(sizeof *seat);
if (!seat)
return NULL;
weston_seat_init(&seat->base, c, seat_name);
seat->base.led_update = drm_led_update;
seat->output_create_listener.notify = notify_output_create;
wl_signal_add(&c->output_created_signal,
&seat->output_create_listener);
wl_list_init(&seat->devices_list);
return seat;
}
static void
udev_seat_destroy(struct udev_seat *seat)
{
weston_seat_release(&seat->base);
wl_list_remove(&seat->output_create_listener.link);
free(seat);
}
struct udev_seat *
udev_seat_get_named(struct udev_input *input, const char *seat_name)
{
struct weston_compositor *c = input->compositor;
struct udev_seat *seat;
wl_list_for_each(seat, &c->seat_list, base.link) {
if (strcmp(seat->base.seat_name, seat_name) == 0)
return seat;
}
seat = udev_seat_create(input, seat_name);
if (!seat)
return NULL;
return seat;
}

57
src/udev-seat.h
Unescape View File

@ -1,57 +0,0 @@
/*
* Copyright © 2013 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, 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 _UDEV_SEAT_H_
#define _UDEV_SEAT_H_
#include "config.h"
#include <libudev.h>
#include "compositor.h"
struct udev_seat {
struct weston_seat base;
struct wl_list devices_list;
struct wl_listener output_create_listener;
};
struct udev_input {
struct udev *udev;
struct udev_monitor *udev_monitor;
struct wl_event_source *udev_monitor_source;
char *seat_id;
struct weston_compositor *compositor;
int enabled;
};
int udev_input_enable(struct udev_input *input);
void udev_input_disable(struct udev_input *input);
int udev_input_init(struct udev_input *input,
struct weston_compositor *c,
struct udev *udev,
const char *seat_id);
void udev_input_destroy(struct udev_input *input);
struct udev_seat *udev_seat_get_named(struct udev_input *input,
const char *seat_name);
#endif
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