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dolphin-emulator/Externals/wxWidgets3/src/unix/joystick.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/unix/joystick.cpp
// Purpose: wxJoystick class
// Author: Ported to Linux by Guilhem Lavaux
// Modified by:
// Created: 05/23/98
// Copyright: (c) Guilhem Lavaux
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_JOYSTICK
#include "wx/joystick.h"
#ifndef WX_PRECOMP
#include "wx/event.h"
#include "wx/window.h"
#include "wx/log.h"
#endif //WX_PRECOMP
#include "wx/thread.h"
#include <linux/joystick.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#include "wx/unix/private.h"
enum {
wxJS_AXIS_X = 0,
wxJS_AXIS_Y,
wxJS_AXIS_Z,
wxJS_AXIS_RUDDER,
wxJS_AXIS_U,
wxJS_AXIS_V,
wxJS_AXIS_MAX = 32767,
wxJS_AXIS_MIN = -32767,
wxJS_MAX_AXES = 15,
wxJS_MAX_BUTTONS = sizeof(int) * 8
};
IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject)
////////////////////////////////////////////////////////////////////////////
// Background thread for reading the joystick device
////////////////////////////////////////////////////////////////////////////
class wxJoystickThread : public wxThread
{
public:
wxJoystickThread(int device, int joystick);
void* Entry();
private:
void SendEvent(wxEventType type, long ts, int change = 0);
int m_device;
int m_joystick;
wxPoint m_lastposition;
int m_axe[wxJS_MAX_AXES];
int m_buttons;
wxWindow* m_catchwin;
int m_polling;
int m_threshold;
friend class wxJoystick;
};
wxJoystickThread::wxJoystickThread(int device, int joystick)
: m_device(device),
m_joystick(joystick),
m_lastposition(wxDefaultPosition),
m_buttons(0),
m_catchwin(NULL),
m_polling(0),
m_threshold(0)
{
memset(m_axe, 0, sizeof(m_axe));
}
void wxJoystickThread::SendEvent(wxEventType type, long ts, int change)
{
wxJoystickEvent jwx_event(type, m_buttons, m_joystick, change);
jwx_event.SetTimestamp(ts);
jwx_event.SetPosition(m_lastposition);
jwx_event.SetZPosition(m_axe[wxJS_AXIS_Z]);
jwx_event.SetEventObject(m_catchwin);
if (m_catchwin)
m_catchwin->GetEventHandler()->AddPendingEvent(jwx_event);
}
void* wxJoystickThread::Entry()
{
struct js_event j_evt;
fd_set read_fds;
struct timeval time_out = {0, 0};
wxFD_ZERO(&read_fds);
while (true)
{
if (TestDestroy())
break;
// We use select when either polling or 'blocking' as even in the
// blocking case we need to check TestDestroy periodically
if (m_polling)
time_out.tv_usec = m_polling * 1000;
else
time_out.tv_usec = 10 * 1000; // check at least every 10 msec in blocking case
wxFD_SET(m_device, &read_fds);
select(m_device+1, &read_fds, NULL, NULL, &time_out);
if (wxFD_ISSET(m_device, &read_fds))
{
memset(&j_evt, 0, sizeof(j_evt));
read(m_device, &j_evt, sizeof(j_evt));
//printf("time: %d\t value: %d\t type: %d\t number: %d\n",
// j_evt.time, j_evt.value, j_evt.type, j_evt.number);
if ((j_evt.type & JS_EVENT_AXIS) && (j_evt.number < wxJS_MAX_AXES))
{
// Ignore invalid axis.
if ( j_evt.number >= wxJS_MAX_AXES )
{
wxLogDebug(wxS("Invalid axis index %d in joystick message."),
j_evt.number);
continue;
}
if ( (m_axe[j_evt.number] + m_threshold < j_evt.value)
|| (m_axe[j_evt.number] - m_threshold > j_evt.value) )
{
m_axe[j_evt.number] = j_evt.value;
switch (j_evt.number)
{
case wxJS_AXIS_X:
m_lastposition.x = j_evt.value;
SendEvent(wxEVT_JOY_MOVE, j_evt.time);
break;
case wxJS_AXIS_Y:
m_lastposition.y = j_evt.value;
SendEvent(wxEVT_JOY_MOVE, j_evt.time);
break;
case wxJS_AXIS_Z:
SendEvent(wxEVT_JOY_ZMOVE, j_evt.time);
break;
default:
SendEvent(wxEVT_JOY_MOVE, j_evt.time);
// TODO: There should be a way to indicate that the event
// is for some other axes.
break;
}
}
}
if ( (j_evt.type & JS_EVENT_BUTTON) && (j_evt.number < wxJS_MAX_BUTTONS) )
{
if (j_evt.value)
{
m_buttons |= (1 << j_evt.number);
SendEvent(wxEVT_JOY_BUTTON_DOWN, j_evt.time, j_evt.number);
}
else
{
m_buttons &= ~(1 << j_evt.number);
SendEvent(wxEVT_JOY_BUTTON_UP, j_evt.time, j_evt.number);
}
}
}
}
close(m_device);
return NULL;
}
////////////////////////////////////////////////////////////////////////////
wxJoystick::wxJoystick(int joystick)
: m_device(-1),
m_joystick(joystick),
m_thread(NULL)
{
wxString dev_name;
// old /dev structure
dev_name.Printf( wxT("/dev/js%d"), joystick);
m_device = open(dev_name.fn_str(), O_RDONLY);
// new /dev structure with "input" subdirectory
if (m_device == -1)
{
dev_name.Printf( wxT("/dev/input/js%d"), joystick);
m_device = open(dev_name.fn_str(), O_RDONLY);
}
if (m_device != -1)
{
m_thread = new wxJoystickThread(m_device, m_joystick);
m_thread->Create();
m_thread->Run();
}
}
wxJoystick::~wxJoystick()
{
ReleaseCapture();
if (m_thread)
m_thread->Delete(); // It's detached so it will delete itself
m_device = -1;
}
////////////////////////////////////////////////////////////////////////////
// State
////////////////////////////////////////////////////////////////////////////
wxPoint wxJoystick::GetPosition() const
{
wxPoint pos(wxDefaultPosition);
if (m_thread) pos = m_thread->m_lastposition;
return pos;
}
int wxJoystick::GetPosition(unsigned axis) const
{
if (m_thread && (axis < wxJS_MAX_AXES))
return m_thread->m_axe[axis];
return 0;
}
int wxJoystick::GetZPosition() const
{
if (m_thread)
return m_thread->m_axe[wxJS_AXIS_Z];
return 0;
}
int wxJoystick::GetButtonState() const
{
if (m_thread)
return m_thread->m_buttons;
return 0;
}
bool wxJoystick::GetButtonState(unsigned id) const
{
if (m_thread && (id < wxJS_MAX_BUTTONS))
return (m_thread->m_buttons & (1 << id)) != 0;
return false;
}
int wxJoystick::GetPOVPosition() const
{
return -1;
}
int wxJoystick::GetPOVCTSPosition() const
{
return -1;
}
int wxJoystick::GetRudderPosition() const
{
if (m_thread)
return m_thread->m_axe[wxJS_AXIS_RUDDER];
return 0;
}
int wxJoystick::GetUPosition() const
{
if (m_thread)
return m_thread->m_axe[wxJS_AXIS_U];
return 0;
}
int wxJoystick::GetVPosition() const
{
if (m_thread)
return m_thread->m_axe[wxJS_AXIS_V];
return 0;
}
int wxJoystick::GetMovementThreshold() const
{
if (m_thread)
return m_thread->m_threshold;
return 0;
}
void wxJoystick::SetMovementThreshold(int threshold)
{
if (m_thread)
m_thread->m_threshold = threshold;
}
////////////////////////////////////////////////////////////////////////////
// Capabilities
////////////////////////////////////////////////////////////////////////////
bool wxJoystick::IsOk() const
{
return (m_device != -1);
}
int wxJoystick::GetNumberJoysticks()
{
wxString dev_name;
int fd, j;
for (j=0; j<4; j++) {
dev_name.Printf(wxT("/dev/js%d"), j);
fd = open(dev_name.fn_str(), O_RDONLY);
if (fd == -1)
break;
close(fd);
}
if (j == 0) {
for (j=0; j<4; j++) {
dev_name.Printf(wxT("/dev/input/js%d"), j);
fd = open(dev_name.fn_str(), O_RDONLY);
if (fd == -1)
return j;
close(fd);
}
}
return j;
}
int wxJoystick::GetManufacturerId() const
{
return 0;
}
int wxJoystick::GetProductId() const
{
return 0;
}
wxString wxJoystick::GetProductName() const
{
char name[128];
if (ioctl(m_device, JSIOCGNAME(sizeof(name)), name) < 0)
strcpy(name, "Unknown");
return wxString(name, wxConvLibc);
}
int wxJoystick::GetXMin() const
{
return wxJS_AXIS_MIN;
}
int wxJoystick::GetYMin() const
{
return wxJS_AXIS_MIN;
}
int wxJoystick::GetZMin() const
{
return wxJS_AXIS_MIN;
}
int wxJoystick::GetXMax() const
{
return wxJS_AXIS_MAX;
}
int wxJoystick::GetYMax() const
{
return wxJS_AXIS_MAX;
}
int wxJoystick::GetZMax() const
{
return wxJS_AXIS_MAX;
}
int wxJoystick::GetNumberButtons() const
{
char nb=0;
if (m_device != -1)
ioctl(m_device, JSIOCGBUTTONS, &nb);
if ((int)nb > wxJS_MAX_BUTTONS)
nb = wxJS_MAX_BUTTONS;
return nb;
}
int wxJoystick::GetNumberAxes() const
{
char nb=0;
if (m_device != -1)
ioctl(m_device, JSIOCGAXES, &nb);
if ((int)nb > wxJS_MAX_AXES)
nb = wxJS_MAX_AXES;
return nb;
}
int wxJoystick::GetMaxButtons() const
{
return wxJS_MAX_BUTTONS; // internal
}
int wxJoystick::GetMaxAxes() const
{
return wxJS_MAX_AXES; // internal
}
int wxJoystick::GetPollingMin() const
{
return 10;
}
int wxJoystick::GetPollingMax() const
{
return 1000;
}
int wxJoystick::GetRudderMin() const
{
return wxJS_AXIS_MIN;
}
int wxJoystick::GetRudderMax() const
{
return wxJS_AXIS_MAX;
}
int wxJoystick::GetUMin() const
{
return wxJS_AXIS_MIN;
}
int wxJoystick::GetUMax() const
{
return wxJS_AXIS_MAX;
}
int wxJoystick::GetVMin() const
{
return wxJS_AXIS_MIN;
}
int wxJoystick::GetVMax() const
{
return wxJS_AXIS_MAX;
}
bool wxJoystick::HasRudder() const
{
return GetNumberAxes() >= wxJS_AXIS_RUDDER;
}
bool wxJoystick::HasZ() const
{
return GetNumberAxes() >= wxJS_AXIS_Z;
}
bool wxJoystick::HasU() const
{
return GetNumberAxes() >= wxJS_AXIS_U;
}
bool wxJoystick::HasV() const
{
return GetNumberAxes() >= wxJS_AXIS_V;
}
bool wxJoystick::HasPOV() const
{
return false;
}
bool wxJoystick::HasPOV4Dir() const
{
return false;
}
bool wxJoystick::HasPOVCTS() const
{
return false;
}
////////////////////////////////////////////////////////////////////////////
// Operations
////////////////////////////////////////////////////////////////////////////
bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq)
{
if (m_thread)
{
m_thread->m_catchwin = win;
m_thread->m_polling = pollingFreq;
return true;
}
return false;
}
bool wxJoystick::ReleaseCapture()
{
if (m_thread)
{
m_thread->m_catchwin = NULL;
m_thread->m_polling = 0;
return true;
}
return false;
}
#endif // wxUSE_JOYSTICK
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