forked from Dniel97/segatools
idzio/di.c: Add hardcoded DirectInput backend
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9763477616
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a0664a4008
336
idzio/di.c
Normal file
336
idzio/di.c
Normal file
@ -0,0 +1,336 @@
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#include <windows.h>
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#include <dinput.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <wchar.h>
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#include "idzio/backend.h"
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#include "idzio/idzio.h"
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#include "idzio/shifter.h"
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#include "idzio/wnd.h"
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#include "util/dprintf.h"
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static BOOL idz_di_enum_callback(const DIDEVICEINSTANCEW *dev, void *ctx);
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static void idz_di_try_fx(void);
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static HRESULT idz_di_poll(DIJOYSTATE *out);
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static void idz_di_jvs_read_buttons(uint8_t *gamebtn_out);
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static uint8_t idz_di_decode_pov(DWORD pov);
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static void idz_di_jvs_read_shifter(uint8_t *gear);
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static void idz_di_jvs_read_analogs(struct idz_io_analog_state *out);
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static const struct idz_io_backend idz_di_backend = {
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.jvs_read_buttons = idz_di_jvs_read_buttons,
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.jvs_read_shifter = idz_di_jvs_read_shifter,
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.jvs_read_analogs = idz_di_jvs_read_analogs,
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};
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static HWND idz_di_wnd;
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static IDirectInput8W *idz_di_api;
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static IDirectInputDevice8W *idz_di_dev;
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static IDirectInputEffect *idz_di_fx;
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HRESULT idz_di_init(HINSTANCE inst, const struct idz_io_backend **backend)
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{
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HRESULT hr;
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HMODULE dinput8;
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HRESULT WINAPI (*api_entry)(HINSTANCE,DWORD,REFIID,LPVOID *,LPUNKNOWN);
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wchar_t dll_path[MAX_PATH];
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UINT path_pos;
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assert(backend != NULL);
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*backend = NULL;
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hr = idz_io_wnd_create(inst, &idz_di_wnd);
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if (FAILED(hr)) {
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return hr;
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}
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/* Initial D Zero has some built-in DirectInput support that is not
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particularly useful. We short this out by dropping a no-op dinput8.dll
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into the install directory. However, this DLL does need to talk to the
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real operating system implementation of DirectInput without the stub DLL
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interfering, so build a path to C:\Windows\System32\dinput.dll here. */
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dll_path[0] = L'\0';
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path_pos = GetSystemDirectoryW(dll_path, _countof(dll_path));
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wcscat_s(
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dll_path + path_pos,
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_countof(dll_path) - path_pos,
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L"\\dinput8.dll");
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dinput8 = LoadLibraryW(dll_path);
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if (dinput8 == NULL) {
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hr = HRESULT_FROM_WIN32(GetLastError());
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dprintf("Wheel: LoadLibrary failed: %08x\n", (int) hr);
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return hr;
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}
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api_entry = (void *) GetProcAddress(dinput8, "DirectInput8Create");
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if (api_entry == NULL) {
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dprintf("Wheel: GetProcAddress failed\n");
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return E_FAIL;
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}
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hr = api_entry(
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inst,
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DIRECTINPUT_VERSION,
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&IID_IDirectInput8W,
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(void **) &idz_di_api,
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NULL);
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if (FAILED(hr)) {
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dprintf("Wheel: API create failed: %08x\n", (int) hr);
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return hr;
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}
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hr = IDirectInput8_EnumDevices(
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idz_di_api,
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DI8DEVCLASS_GAMECTRL,
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idz_di_enum_callback,
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NULL,
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DIEDFL_ATTACHEDONLY);
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if (FAILED(hr) || idz_di_dev == NULL) {
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dprintf("Wheel: Could not find a controller: %08x\n", (int) hr);
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return hr;
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}
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hr = IDirectInputDevice8_SetCooperativeLevel(
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idz_di_dev,
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idz_di_wnd,
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DISCL_BACKGROUND | DISCL_EXCLUSIVE);
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if (FAILED(hr)) {
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dprintf("Wheel: SetCooperativeLevel failed: %08x\n", (int) hr);
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return hr;
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}
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hr = IDirectInputDevice8_SetDataFormat(idz_di_dev, &c_dfDIJoystick);
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if (FAILED(hr)) {
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dprintf("Wheel: SetDataFormat failed: %08x\n", (int) hr);
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return hr;
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}
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hr = IDirectInputDevice8_Acquire(idz_di_dev);
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if (FAILED(hr)) {
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dprintf("Wheel: Acquire failed: %08x\n", (int) hr);
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return hr;
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}
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dprintf("Wheel: DirectInput initialized\n");
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idz_di_try_fx();
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*backend = &idz_di_backend;
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return S_OK;
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}
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static BOOL idz_di_enum_callback(const DIDEVICEINSTANCEW *dev, void *ctx)
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{
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IDirectInput8_CreateDevice(
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idz_di_api,
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&dev->guidInstance,
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&idz_di_dev,
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NULL);
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return DIENUM_STOP;
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}
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static void idz_di_try_fx(void)
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{
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/* Set up force-feedback on devices that support it. This is just a stub
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for the time being, since we don't yet know how the serial port force
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feedback protocol works.
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I'm currently developing with an Xbox One Thrustmaster TMX wheel, if
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we don't perform at least some perfunctory FFB initialization of this
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nature (or indeed if no DirectInput application is running) then the
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wheel exhibits considerable resistance, similar to that of a stationary
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car. Changing cf.lMagnitude to a nonzero value does cause the wheel to
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continuously turn in the given direction with the given force as one
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would expect (max magnitude per DirectInput docs is +/- 10000).
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Failure here is non-fatal, we log any errors and move on.
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https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ee416353(v=vs.85)
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*/
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DWORD axis;
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LONG direction;
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DIEFFECT fx;
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DICONSTANTFORCE cf;
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HRESULT hr;
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dprintf("Wheel: Attempting to start force feedback (may take a sec)\n");
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axis = DIJOFS_X;
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direction = 0;
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memset(&cf, 0, sizeof(cf));
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cf.lMagnitude = 0;
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memset(&fx, 0, sizeof(fx));
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fx.dwSize = sizeof(fx);
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fx.dwFlags = DIEFF_CARTESIAN | DIEFF_OBJECTOFFSETS;
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fx.dwDuration = INFINITE;
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fx.dwGain = DI_FFNOMINALMAX;
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fx.dwTriggerButton = DIEB_NOTRIGGER;
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fx.dwTriggerRepeatInterval = INFINITE;
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fx.cAxes = 1;
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fx.rgdwAxes = &axis;
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fx.rglDirection = &direction;
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fx.cbTypeSpecificParams = sizeof(cf);
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fx.lpvTypeSpecificParams = &cf;
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hr = IDirectInputDevice8_CreateEffect(
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idz_di_dev,
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&GUID_ConstantForce,
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&fx,
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&idz_di_fx,
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NULL);
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if (FAILED(hr)) {
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dprintf("Wheel: DirectInput force feedback unavailable: %08x\n",
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(int) hr);
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return;
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}
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hr = IDirectInputEffect_Start(idz_di_fx, INFINITE, 0);
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if (FAILED(hr)) {
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dprintf("Wheel: DirectInput force feedback start failed: %08x\n",
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(int) hr);
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return;
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}
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dprintf("Wheel: Force feedback initialized and set to zero\n");
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}
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static HRESULT idz_di_poll(DIJOYSTATE *out)
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{
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HRESULT hr;
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MSG msg;
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memset(out, 0, sizeof(*out));
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if (idz_di_dev == NULL) {
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return E_UNEXPECTED;
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}
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/* Pump our dummy window's message queue just in case DirectInput or an
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IHV DirectInput driver somehow relies on it */
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while (PeekMessageW(&msg, idz_di_wnd, 0, 0, PM_REMOVE)) {
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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hr = IDirectInputDevice8_GetDeviceState(idz_di_dev, sizeof(*out), out);
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if (FAILED(hr)) {
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dprintf("Wheel: I/O error: %08x\n", (int) hr);
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}
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/* JVS lacks a protocol for reporting hardware errors from poll command
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responses, so this ends up returning zeroed input state instead. */
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return hr;
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}
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static void idz_di_jvs_read_buttons(uint8_t *gamebtn_out)
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{
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uint8_t gamebtn;
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DIJOYSTATE state;
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HRESULT hr;
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assert(gamebtn_out != NULL);
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hr = idz_di_poll(&state);
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if (FAILED(hr)) {
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return;
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}
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gamebtn = idz_di_decode_pov(state.rgdwPOV[0]);
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if (state.rgbButtons[2]) {
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gamebtn |= IDZ_IO_GAMEBTN_START;
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}
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if (state.rgbButtons[9]) {
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gamebtn |= IDZ_IO_GAMEBTN_VIEW_CHANGE;
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}
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*gamebtn_out = gamebtn;
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}
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static uint8_t idz_di_decode_pov(DWORD pov)
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{
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switch (pov) {
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case 0: return IDZ_IO_GAMEBTN_UP;
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case 4500: return IDZ_IO_GAMEBTN_UP | IDZ_IO_GAMEBTN_RIGHT;
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case 9000: return IDZ_IO_GAMEBTN_RIGHT;
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case 13500: return IDZ_IO_GAMEBTN_RIGHT | IDZ_IO_GAMEBTN_DOWN;
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case 18000: return IDZ_IO_GAMEBTN_DOWN;
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case 22500: return IDZ_IO_GAMEBTN_DOWN | IDZ_IO_GAMEBTN_RIGHT;
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case 27000: return IDZ_IO_GAMEBTN_LEFT;
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case 31500: return IDZ_IO_GAMEBTN_LEFT | IDZ_IO_GAMEBTN_UP;
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default: return 0;
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}
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}
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static void idz_di_jvs_read_shifter(uint8_t *gear)
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{
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DIJOYSTATE state;
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HRESULT hr;
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assert(gear != NULL);
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hr = idz_di_poll(&state);
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if (FAILED(hr)) {
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return;
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}
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if (state.rgbButtons[2]) {
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idz_shifter_reset();
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}
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idz_shifter_update(state.rgbButtons[0], state.rgbButtons[1]);
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*gear = idz_shifter_current_gear();
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}
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static void idz_di_jvs_read_analogs(struct idz_io_analog_state *out)
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{
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DIJOYSTATE state;
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HRESULT hr;
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assert(out != NULL);
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hr = idz_di_poll(&state);
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if (FAILED(hr)) {
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return;
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}
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out->wheel = state.lX - 32768;
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out->accel = 65535 - state.lRz;
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out->brake = 65535 - state.lY;
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}
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5
idzio/di.h
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5
idzio/di.h
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@ -0,0 +1,5 @@
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#pragma once
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#include "idzio/backend.h"
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HRESULT idz_di_init(HINSTANCE inst, const struct idz_io_backend **backend);
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@ -5,9 +5,11 @@
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#include <stdint.h>
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#include "idzio/backend.h"
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#include "idzio/di.h"
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#include "idzio/idzio.h"
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#include "idzio/xi.h"
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static HMODULE idz_io_hmodule;
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static const struct idz_io_backend *idz_io_backend;
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static bool idz_io_coin;
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static uint16_t idz_io_coins;
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@ -16,7 +18,7 @@ HRESULT idz_io_init(void)
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{
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assert(idz_io_backend == NULL);
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return idz_xi_init(&idz_io_backend);
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return idz_di_init(idz_io_hmodule, &idz_io_backend);
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}
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void idz_io_jvs_read_buttons(uint8_t *opbtn_out, uint8_t *gamebtn_out)
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@ -75,3 +77,12 @@ void idz_io_jvs_read_coin_counter(uint16_t *out)
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*out = idz_io_coins;
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}
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BOOL WINAPI DllMain(HMODULE self, DWORD reason, void *ctx)
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{
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if (reason == DLL_PROCESS_ATTACH) {
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idz_io_hmodule = self;
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}
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return TRUE;
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}
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@ -6,10 +6,17 @@ idzio_dll = shared_library(
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vs_module_defs : 'idzio.def',
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c_pch : '../precompiled.h',
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dependencies : [
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dinput8_lib,
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dxguid_lib,
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xinput_lib,
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],
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link_with : [
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util_lib,
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],
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sources : [
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'backend.h',
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'di.c',
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'di.h',
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'dllmain.c',
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'idzio.h',
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'shifter.c',
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@ -26,6 +26,8 @@ if meson.get_compiler('c').get_id() != 'msvc'
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endif
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cc = meson.get_compiler('c')
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dinput8_lib = cc.find_library('dinput8')
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dxguid_lib = cc.find_library('dxguid')
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xinput_lib = cc.find_library('xinput')
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inc = include_directories('.')
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