dolphin/Source/Core/InputCommon/ControllerInterface/DInput/DInputJoystick.cpp

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// Copyright 2010 Dolphin Emulator Project
2015-05-17 23:08:10 +00:00
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <algorithm>
#include <map>
#include <sstream>
#include "InputCommon/ControllerInterface/ControllerInterface.h"
#include "InputCommon/ControllerInterface/DInput/DInput.h"
#include "InputCommon/ControllerInterface/DInput/DInputJoystick.h"
#include "InputCommon/ControllerInterface/DInput/XInputFilter.h"
namespace ciface
{
namespace DInput
{
#define DATA_BUFFER_SIZE 32
void InitJoystick(IDirectInput8* const idi8, HWND hwnd)
{
std::list<DIDEVICEINSTANCE> joysticks;
idi8->EnumDevices(DI8DEVCLASS_GAMECTRL, DIEnumDevicesCallback, (LPVOID)&joysticks,
DIEDFL_ATTACHEDONLY);
std::unordered_set<DWORD> xinput_guids = GetXInputGUIDS();
for (DIDEVICEINSTANCE& joystick : joysticks)
{
// skip XInput Devices
if (xinput_guids.count(joystick.guidProduct.Data1))
{
continue;
}
LPDIRECTINPUTDEVICE8 js_device;
if (SUCCEEDED(idi8->CreateDevice(joystick.guidInstance, &js_device, nullptr)))
{
if (SUCCEEDED(js_device->SetDataFormat(&c_dfDIJoystick)))
{
if (FAILED(js_device->SetCooperativeLevel(GetAncestor(hwnd, GA_ROOT),
DISCL_BACKGROUND | DISCL_EXCLUSIVE)))
{
// PanicAlert("SetCooperativeLevel(DISCL_EXCLUSIVE) failed!");
// fall back to non-exclusive mode, with no rumble
if (FAILED(
js_device->SetCooperativeLevel(nullptr, DISCL_BACKGROUND | DISCL_NONEXCLUSIVE)))
{
// PanicAlert("SetCooperativeLevel failed!");
js_device->Release();
continue;
}
}
auto js = std::make_shared<Joystick>(js_device);
// only add if it has some inputs/outputs
if (js->Inputs().size() || js->Outputs().size())
g_controller_interface.AddDevice(std::move(js));
}
else
{
// PanicAlert("SetDataFormat failed!");
js_device->Release();
}
}
}
}
Joystick::Joystick(/*const LPCDIDEVICEINSTANCE lpddi, */ const LPDIRECTINPUTDEVICE8 device)
: m_device(device)
//, m_name(TStringToString(lpddi->tszInstanceName))
{
// seems this needs to be done before GetCapabilities
// polled or buffered data
DIPROPDWORD dipdw;
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = DATA_BUFFER_SIZE;
// set the buffer size,
// if we can't set the property, we can't use buffered data
m_buffered = SUCCEEDED(m_device->SetProperty(DIPROP_BUFFERSIZE, &dipdw.diph));
// seems this needs to be done after SetProperty of buffer size
m_device->Acquire();
// get joystick caps
DIDEVCAPS js_caps;
js_caps.dwSize = sizeof(js_caps);
if (FAILED(m_device->GetCapabilities(&js_caps)))
return;
// max of 32 buttons and 4 hats / the limit of the data format I am using
js_caps.dwButtons = std::min((DWORD)32, js_caps.dwButtons);
js_caps.dwPOVs = std::min((DWORD)4, js_caps.dwPOVs);
// m_must_poll = (js_caps.dwFlags & DIDC_POLLEDDATAFORMAT) != 0;
// buttons
for (u8 i = 0; i != js_caps.dwButtons; ++i)
AddInput(new Button(i, m_state_in.rgbButtons[i]));
// hats
for (u8 i = 0; i != js_caps.dwPOVs; ++i)
{
// each hat gets 4 input instances associated with it, (up down left right)
for (u8 d = 0; d != 4; ++d)
AddInput(new Hat(i, m_state_in.rgdwPOV[i], d));
}
// get up to 6 axes and 2 sliders
DIPROPRANGE range;
range.diph.dwSize = sizeof(range);
range.diph.dwHeaderSize = sizeof(range.diph);
range.diph.dwHow = DIPH_BYOFFSET;
// screw EnumObjects, just go through all the axis offsets and try to GetProperty
// this should be more foolproof, less code, and probably faster
for (unsigned int offset = 0; offset < DIJOFS_BUTTON(0) / sizeof(LONG); ++offset)
{
range.diph.dwObj = offset * sizeof(LONG);
// try to set some nice power of 2 values (128) to match the GameCube controls
range.lMin = -(1 << 7);
range.lMax = (1 << 7);
m_device->SetProperty(DIPROP_RANGE, &range.diph);
// but I guess not all devices support setting range
// so I getproperty right afterward incase it didn't set.
// This also checks that the axis is present
if (SUCCEEDED(m_device->GetProperty(DIPROP_RANGE, &range.diph)))
{
const LONG base = (range.lMin + range.lMax) / 2;
const LONG& ax = (&m_state_in.lX)[offset];
// each axis gets a negative and a positive input instance associated with it
AddAnalogInputs(new Axis(offset, ax, base, range.lMin - base),
new Axis(offset, ax, base, range.lMax - base));
}
}
// force feedback
std::list<DIDEVICEOBJECTINSTANCE> objects;
if (SUCCEEDED(m_device->EnumObjects(DIEnumDeviceObjectsCallback, (LPVOID)&objects, DIDFT_AXIS)))
{
InitForceFeedback(m_device, (int)objects.size());
}
ZeroMemory(&m_state_in, sizeof(m_state_in));
// set hats to center
memset(m_state_in.rgdwPOV, 0xFF, sizeof(m_state_in.rgdwPOV));
}
Joystick::~Joystick()
{
m_device->Unacquire();
m_device->Release();
}
std::string Joystick::GetName() const
{
return GetDeviceName(m_device);
}
std::string Joystick::GetSource() const
{
return DINPUT_SOURCE_NAME;
}
// update IO
void Joystick::UpdateInput()
{
HRESULT hr = 0;
// just always poll,
// MSDN says if this isn't needed it doesn't do anything
m_device->Poll();
if (m_buffered)
{
DIDEVICEOBJECTDATA evtbuf[DATA_BUFFER_SIZE];
DWORD numevents = DATA_BUFFER_SIZE;
hr = m_device->GetDeviceData(sizeof(*evtbuf), evtbuf, &numevents, 0);
if (SUCCEEDED(hr))
{
for (LPDIDEVICEOBJECTDATA evt = evtbuf; evt != (evtbuf + numevents); ++evt)
{
// all the buttons are at the end of the data format
// they are bytes rather than longs
if (evt->dwOfs < DIJOFS_BUTTON(0))
*(DWORD*)(((BYTE*)&m_state_in) + evt->dwOfs) = evt->dwData;
else
((BYTE*)&m_state_in)[evt->dwOfs] = (BYTE)evt->dwData;
}
// seems like this needs to be done maybe...
if (DI_BUFFEROVERFLOW == hr)
hr = m_device->GetDeviceState(sizeof(m_state_in), &m_state_in);
}
}
else
{
hr = m_device->GetDeviceState(sizeof(m_state_in), &m_state_in);
}
// try reacquire if input lost
if (DIERR_INPUTLOST == hr || DIERR_NOTACQUIRED == hr)
m_device->Acquire();
}
// get name
std::string Joystick::Button::GetName() const
{
std::ostringstream ss;
ss << "Button " << (int)m_index;
return ss.str();
}
std::string Joystick::Axis::GetName() const
{
std::ostringstream ss;
// axis
if (m_index < 6)
{
ss << "Axis " << (char)('X' + (m_index % 3));
if (m_index > 2)
ss << 'r';
}
// slider
else
{
ss << "Slider " << (int)(m_index - 6);
}
ss << (m_range < 0 ? '-' : '+');
return ss.str();
}
std::string Joystick::Hat::GetName() const
{
static char tmpstr[] = "Hat . .";
tmpstr[4] = (char)('0' + m_index);
tmpstr[6] = "NESW"[m_direction];
return tmpstr;
}
// get / set state
ControlState Joystick::Axis::GetState() const
{
return std::max(0.0, ControlState(m_axis - m_base) / m_range);
}
ControlState Joystick::Button::GetState() const
{
return ControlState(m_button > 0);
}
ControlState Joystick::Hat::GetState() const
{
// can this func be simplified ?
// hat centered code from MSDN
if (0xFFFF == LOWORD(m_hat))
return 0;
return (abs((int)(m_hat / 4500 - m_direction * 2 + 8) % 8 - 4) > 2);
}
}
}