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/*
* Copyright (C) 2012 INdT - Instituto Nokia de Tecnologia
* Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Gamepads.h"
#include "GamepadDeviceLinux.h"
#include "GamepadList.h"
#include <QObject>
#include <QSocketNotifier>
extern "C" {
#include <libudev.h>
}
#include <unistd.h>
#include <wtf/HashMap.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/text/CString.h>
#include <wtf/text/StringHash.h>
namespace WebCore {
class GamepadDeviceLinuxQt : public QObject, public GamepadDeviceLinux {
Q_OBJECT
public:
static PassOwnPtr<GamepadDeviceLinuxQt> create(const String& deviceFile)
{
return adoptPtr(new GamepadDeviceLinuxQt(deviceFile));
}
~GamepadDeviceLinuxQt();
private:
GamepadDeviceLinuxQt(const String&);
QSocketNotifier* m_notifier;
private Q_SLOTS:
bool readCallback();
};
GamepadDeviceLinuxQt::GamepadDeviceLinuxQt(const String& deviceFile)
: QObject()
, GamepadDeviceLinux(deviceFile)
{
if (m_fileDescriptor == -1)
return;
m_notifier = new QSocketNotifier(m_fileDescriptor, QSocketNotifier::Read, this);
connect(m_notifier, SIGNAL(activated(int)), this, SLOT(readCallback()));
}
GamepadDeviceLinuxQt::~GamepadDeviceLinuxQt()
{
}
bool GamepadDeviceLinuxQt::readCallback()
{
js_event event;
int len = read(m_fileDescriptor, &event, sizeof(js_event));
if (len != sizeof(event))
return false;
updateForEvent(event);
return true;
}
class GamepadsQt : public QObject {
Q_OBJECT
public:
GamepadsQt(unsigned);
void registerDevice(const String&);
void unregisterDevice(const String&);
void updateGamepadList(GamepadList*);
private Q_SLOTS:
void onGamePadChange();
private:
~GamepadsQt();
bool isGamepadDevice(struct udev_device*);
Vector<OwnPtr<GamepadDeviceLinuxQt> > m_slots;
HashMap<String, GamepadDeviceLinuxQt*> m_deviceMap;
struct udev* m_udev;
struct udev_monitor* m_gamepadsMonitor;
QSocketNotifier* m_gamepadsNotifier;
};
GamepadsQt::GamepadsQt(unsigned length)
: QObject()
, m_slots(length)
{
m_udev = udev_new();
m_gamepadsMonitor = udev_monitor_new_from_netlink(m_udev, "udev");
udev_monitor_enable_receiving(m_gamepadsMonitor);
udev_monitor_filter_add_match_subsystem_devtype(m_gamepadsMonitor, "input", 0);
m_gamepadsNotifier = new QSocketNotifier(udev_monitor_get_fd(m_gamepadsMonitor), QSocketNotifier::Read, this);
connect(m_gamepadsNotifier, SIGNAL(activated(int)), this, SLOT(onGamePadChange()));
struct udev_enumerate* enumerate = udev_enumerate_new(m_udev);
udev_enumerate_add_match_subsystem(enumerate, "input");
udev_enumerate_add_match_property(enumerate, "ID_INPUT_JOYSTICK", "1");
udev_enumerate_scan_devices(enumerate);
struct udev_list_entry* cur;
struct udev_list_entry* devs = udev_enumerate_get_list_entry(enumerate);
udev_list_entry_foreach(cur, devs)
{
const char* devname = udev_list_entry_get_name(cur);
struct udev_device* device = udev_device_new_from_syspath(m_udev, devname);
if (isGamepadDevice(device))
registerDevice(String::fromUTF8(udev_device_get_devnode(device)));
udev_device_unref(device);
}
udev_enumerate_unref(enumerate);
}
GamepadsQt::~GamepadsQt()
{
udev_unref(m_udev);
udev_monitor_unref(m_gamepadsMonitor);
}
bool GamepadsQt::isGamepadDevice(struct udev_device* device)
{
const char* deviceFile = udev_device_get_devnode(device);
const char* sysfsPath = udev_device_get_syspath(device);
if (!deviceFile || !sysfsPath)
return false;
if (!udev_device_get_property_value(device, "ID_INPUT") || !udev_device_get_property_value(device, "ID_INPUT_JOYSTICK"))
return false;
return QByteArray(deviceFile).startsWith("/dev/input/js");
}
void GamepadsQt::onGamePadChange()
{
struct udev_device* device = udev_monitor_receive_device(m_gamepadsMonitor);
if (!isGamepadDevice(device))
return;
QByteArray action(udev_device_get_action(device));
if (action == "add")
registerDevice(udev_device_get_devnode(device));
else if (action == "remove")
unregisterDevice(udev_device_get_devnode(device));
}
void GamepadsQt::registerDevice(const String& deviceFile)
{
ASSERT(!m_deviceMap.contains(deviceFile));
for (unsigned index = 0; index < m_slots.size(); index++) {
if (!m_slots[index]) {
m_slots[index] = GamepadDeviceLinuxQt::create(deviceFile);
m_deviceMap.add(deviceFile, m_slots[index].get());
break;
}
}
}
void GamepadsQt::unregisterDevice(const String& deviceFile)
{
ASSERT(m_deviceMap.contains(deviceFile));
GamepadDeviceLinuxQt* gamepadDevice = m_deviceMap.take(deviceFile);
unsigned index = m_slots.find(gamepadDevice);
m_slots[index].clear();
}
void GamepadsQt::updateGamepadList(GamepadList* into)
{
ASSERT(m_slots.size() == into->length());
for (unsigned i = 0; i < m_slots.size(); i++) {
if (m_slots[i] && m_slots[i]->connected()) {
GamepadDeviceLinuxQt* gamepadDevice = m_slots[i].get();
RefPtr<Gamepad> gamepad = into->item(i);
if (!gamepad)
gamepad = Gamepad::create();
gamepad->index(i);
gamepad->id(gamepadDevice->id());
gamepad->timestamp(gamepadDevice->timestamp());
gamepad->axes(gamepadDevice->axesCount(), gamepadDevice->axesData());
gamepad->buttons(gamepadDevice->buttonsCount(), gamepadDevice->buttonsData());
into->set(i, gamepad);
} else
into->set(i, 0);
}
}
void sampleGamepads(GamepadList* into)
{
DEFINE_STATIC_LOCAL(GamepadsQt, gamepadsQt, (into->length()));
gamepadsQt.updateGamepadList(into);
}
#include "GamepadsQt.moc"
} // namespace WebCore
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