dolphin/Source/Plugins/Plugin_nJoy_SDL/Src/Rumble.cpp

381 lines
10 KiB
C++

// Project description
// -------------------
// Name: nJoy
// Description: A Dolphin Compatible Input Plugin
//
// Author: Falcon4ever (nJoy@falcon4ever.com)
// Site: www.multigesture.net
// Copyright (C) 2003 Dolphin Project.
//
//
// Licensetype: GNU General Public License (GPL)
//
// 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, version 2.0.
//
// 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 2.0 for more details.
//
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
//
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
//
// Include
// ---------
#include "nJoy.h"
// Enable or disable rumble.
// ---------
// Rumble in windows
#ifdef _WIN32
struct RUMBLE // GC Pad rumble DIDevice
{
LPDIRECTINPUTDEVICE8 g_pDevice; // 4 pads objects
LPDIRECTINPUTEFFECT g_pEffect;
DWORD g_dwNumForceFeedbackAxis;
DIEFFECT eff;
};
#define SAFE_RELEASE(p) { if (p) { (p)->Release(); (p)=NULL; } }
BOOL CALLBACK EnumFFDevicesCallback(const DIDEVICEINSTANCE* pInst, VOID* pContext);
BOOL CALLBACK EnumAxesCallback(const DIDEVICEOBJECTINSTANCE* pdidoi, VOID* pContext);
void SetDeviceForcesXY(int pad, int nXYForce);
LPDIRECTINPUT8 g_Rumble; // DInput Rumble object
RUMBLE pRumble[4]; // 4 GC Rumble Pads
extern InputCommon::CONTROLLER_MAPPING PadMapping[4];
#elif defined(__linux__)
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int fd;
char device_file_name[64];
struct ff_effect effect;
bool CanRumble = false;
#endif
// Use PAD rumble
// --------------
void Pad_Use_Rumble(u8 _numPAD)
{
#ifdef _WIN32
if (PadMapping[_numPAD].rumble)
{
if (!g_Rumble)
{
// GetForegroundWindow() always sends the good HWND
if (FAILED(InitRumble(GetForegroundWindow())))
PanicAlert("Could not initialize Rumble!");
} else
{
// Acquire gamepad
if (pRumble[_numPAD].g_pDevice != NULL)
pRumble[_numPAD].g_pDevice->Acquire();
}
}
#elif defined(__linux__)
if (!fd)
{
sprintf(device_file_name, "/dev/input/event%d", PadMapping[_numPAD].eventnum); //TODO: Make dynamic //
/* Open device */
fd = open(device_file_name, O_RDWR);
if (fd == -1) {
perror("Open device file");
//Something wrong, probably permissions, just return now
return;
}
int n_effects = 0;
if (ioctl(fd, EVIOCGEFFECTS, &n_effects) == -1) {
perror("Ioctl number of effects");
}
if (n_effects > 0)
CanRumble = true;
else
return; // Return since we can't do any effects
/* a strong rumbling effect */
effect.type = FF_RUMBLE;
effect.id = -1;
effect.u.rumble.strong_magnitude = 0x8000;
effect.u.rumble.weak_magnitude = 0;
effect.replay.length = 5000; // Set to 5 seconds, if a Game needs more for a single rumble event, it is dumb and must be a demo
effect.replay.delay = 0;
if (ioctl(fd, EVIOCSFF, &effect) == -1) {
perror("Upload effect");
CanRumble = false; //We have effects but it doesn't support the rumble we are using. This is basic rumble, should work for most
}
}
#endif
}
// Set PAD rumble. Explanation: Stop = 0, Rumble = 1
// --------------
void PAD_Rumble(u8 _numPAD, unsigned int _uType, unsigned int _uStrength)
{
Pad_Use_Rumble(_numPAD);
// SDL can't rumble the gamepad so we need to use platform specific code
#ifdef _WIN32
int a = 0;
if (_uType == 1)
{
// it looks like _uStrength is equal to 3 everytime anyway...
a = _uStrength > 2 ? (1000*(g_Config.RumbleStrength + 1)) : 0;
a = a > 10000 ? 10000 : a;
}
// a = int ((float)a * 0.96f);
// What is this for ?
// else if ((_uType == 0) || (_uType == 2))
if (PadMapping[_numPAD].rumble) // rumble activated
{
// Start Effect
SetDeviceForcesXY(_numPAD, a);
}
#elif defined(__linux__)
struct input_event event;
if (CanRumble)
{
if (_uType == 1)
{
event.type = EV_FF;
event.code = effect.id;
event.value = 1;
if (write(fd, (const void*) &event, sizeof(event)) == -1) {
perror("Play effect");
exit(1);
}
}
if ((_uType == 0) || (_uType == 2))
{
event.type = EV_FF;
event.code = effect.id;
event.value = 0;
if (write(fd, (const void*) &event, sizeof(event)) == -1) {
perror("Stop effect");
exit(1);
}
}
}
#endif
}
#ifdef _WIN32
// Rumble stuff :D!
// ----------------
//
HRESULT InitRumble(HWND hWnd)
{
DIPROPDWORD dipdw;
HRESULT hr;
// Register with the DirectInput subsystem and get a pointer to a IDirectInput interface we can use.
if (FAILED(hr = DirectInput8Create(GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (VOID**)&g_Rumble, NULL)))
return hr;
// Look for a device we can use
if (FAILED(hr = g_Rumble->EnumDevices( DI8DEVCLASS_GAMECTRL, EnumFFDevicesCallback, NULL, DIEDFL_ATTACHEDONLY | DIEDFL_FORCEFEEDBACK)))
return hr;
for (int i=0; i<4; i++)
{
if (NULL == pRumble[i].g_pDevice)
PadMapping[i].rumble = false; // Disable Rumble for this pad only.
else
{
pRumble[i].g_pDevice->SetDataFormat(&c_dfDIJoystick);
pRumble[i].g_pDevice->SetCooperativeLevel(hWnd, DISCL_EXCLUSIVE | DISCL_BACKGROUND);
// Request exclusive acces for both background and foreground.
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = FALSE;
// if Force Feedback doesn't seem to work...
if (FAILED(pRumble[i].g_pDevice->EnumObjects(EnumAxesCallback,
(void*)&pRumble[i].g_dwNumForceFeedbackAxis, DIDFT_AXIS))
|| FAILED(pRumble[i].g_pDevice->SetProperty(DIPROP_AUTOCENTER, &dipdw.diph)))
{
PanicAlert("Device %d doesn't seem to work ! \nRumble for device %d is now Disabled !", i+1);
PadMapping[i].rumble = false; // Disable Rumble for this pad
continue; // Next pad
}
if (pRumble[i].g_dwNumForceFeedbackAxis > 2)
pRumble[i].g_dwNumForceFeedbackAxis = 2;
DWORD _rgdwAxes[2] = {DIJOFS_X, DIJOFS_Y};
long rglDirection[2] = {0, 0};
DICONSTANTFORCE cf = {0};
ZeroMemory(&pRumble[i].eff, sizeof(pRumble[i].eff));
pRumble[i].eff.dwSize = sizeof(DIEFFECT);
pRumble[i].eff.dwFlags = DIEFF_CARTESIAN | DIEFF_OBJECTOFFSETS;
pRumble[i].eff.dwDuration = INFINITE; // fixed time may be safer (X * DI_SECONDS)
pRumble[i].eff.dwSamplePeriod = 0;
pRumble[i].eff.dwGain = DI_FFNOMINALMAX;
pRumble[i].eff.dwTriggerButton = DIEB_NOTRIGGER;
pRumble[i].eff.dwTriggerRepeatInterval = 0;
pRumble[i].eff.cAxes = pRumble[i].g_dwNumForceFeedbackAxis;
pRumble[i].eff.rgdwAxes = _rgdwAxes;
pRumble[i].eff.rglDirection = rglDirection;
pRumble[i].eff.lpEnvelope = 0;
pRumble[i].eff.cbTypeSpecificParams = sizeof( DICONSTANTFORCE );
pRumble[i].eff.lpvTypeSpecificParams = &cf;
pRumble[i].eff.dwStartDelay = 0;
// Create the prepared effect
if (FAILED(hr = pRumble[i].g_pDevice->CreateEffect(GUID_ConstantForce, &pRumble[i].eff, &pRumble[i].g_pEffect, NULL)))
continue;
if (pRumble[i].g_pEffect == NULL)
continue;
}
}
return S_OK;
}
void SetDeviceForcesXY(int npad, int nXYForce)
{
// Security check
if (pRumble[npad].g_pDevice == NULL)
return;
// If nXYForce is null, there's no point to create the effect
// Just stop the force feedback
if (nXYForce == 0) {
pRumble[npad].g_pEffect->Stop();
return;
}
long rglDirection[2] = {0};
DICONSTANTFORCE cf;
// If only one force feedback axis, then apply only one direction and keep the direction at zero
if (pRumble[npad].g_dwNumForceFeedbackAxis == 1)
{
rglDirection[0] = 0;
cf.lMagnitude = nXYForce; // max should be 10000
}
// If two force feedback axis, then apply magnitude from both directions
else
{
rglDirection[0] = nXYForce;
rglDirection[1] = nXYForce;
cf.lMagnitude = 1.4142f*nXYForce;
}
ZeroMemory(&pRumble[npad].eff, sizeof(pRumble[npad].eff));
pRumble[npad].eff.dwSize = sizeof(DIEFFECT);
pRumble[npad].eff.dwFlags = DIEFF_CARTESIAN | DIEFF_OBJECTOFFSETS;
pRumble[npad].eff.cAxes = pRumble[npad].g_dwNumForceFeedbackAxis;
pRumble[npad].eff.rglDirection = rglDirection;
pRumble[npad].eff.lpEnvelope = 0;
pRumble[npad].eff.cbTypeSpecificParams = sizeof(DICONSTANTFORCE);
pRumble[npad].eff.lpvTypeSpecificParams = &cf;
pRumble[npad].eff.dwStartDelay = 0;
// Now set the new parameters..
pRumble[npad].g_pEffect->SetParameters(&pRumble[npad].eff, DIEP_DIRECTION | DIEP_TYPESPECIFICPARAMS | DIEP_START);
// ..And start the effect immediately.
if (pRumble[npad].g_pEffect != NULL)
pRumble[npad].g_pEffect->Start(1, 0);
}
BOOL CALLBACK EnumFFDevicesCallback(const DIDEVICEINSTANCE* pInst, VOID* pContext)
{
LPDIRECTINPUTDEVICE8 pDevice;
DIPROPDWORD dipdw;
HRESULT hr;
int JoystickID;
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
g_Rumble->CreateDevice(pInst->guidInstance, &pDevice, NULL); // Create a DInput pad device
if (SUCCEEDED(hr = pDevice->GetProperty(DIPROP_JOYSTICKID, &dipdw.diph))) // Get DInput Device ID
JoystickID = dipdw.dwData;
else
return DIENUM_CONTINUE;
//PanicAlert("DInput ID : %d \nSDL ID (1-4) : %d / %d / %d / %d\n", JoystickID, PadMapping[0].ID, PadMapping[1].ID, PadMapping[2].ID, PadMapping[3].ID);
for (int i=0; i<4; i++)
{
if (PadMapping[i].ID == JoystickID) // if SDL ID = DInput ID -> we're dealing with the same device
{
// a DInput device is created even if rumble is disabled on startup
// this way, you can toggle the rumble setting while in game
//if (PadMapping[i].enabled) // && PadMapping[i].rumble
pRumble[i].g_pDevice = pDevice; // everything looks good, save the DInput device
}
}
return DIENUM_CONTINUE;
}
BOOL CALLBACK EnumAxesCallback(const DIDEVICEOBJECTINSTANCE* pdidoi, VOID* pContext)
{
DWORD* pdwNumForceFeedbackAxis = (DWORD*)pContext; // Enum Rumble Axis
if ((pdidoi->dwFlags & DIDOI_FFACTUATOR) != 0)
(*pdwNumForceFeedbackAxis)++;
return DIENUM_CONTINUE;
}
VOID FreeDirectInput()
{
// Unacquire the device one last time just in case
// the app tried to exit while the device is still acquired.
for (int i=0; i<4; i++) // Free all pads
{
if (pRumble[i].g_pDevice)
pRumble[i].g_pDevice->Unacquire();
SAFE_RELEASE(pRumble[i].g_pEffect);
SAFE_RELEASE(pRumble[i].g_pDevice);
}
SAFE_RELEASE(g_Rumble); // Rumble object
}
#endif