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RetroArch/input/dinput.c

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/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
* Copyright (C) 2010-2011 - Hans-Kristian Arntzen
*
* Some code herein may be based on code found in BSNES.
*
* SSNES 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* SSNES 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 for more details.
*
* You should have received a copy of the GNU General Public License along with SSNES.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "SDL.h"
#include "SDL_syswm.h"
#include <stdbool.h>
#include "ssnes_dinput.h"
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
struct sdl_dinput_map
{
int sdl;
int di;
};
static const struct sdl_dinput_map key_map[] = {
{ SDLK_a, DIK_A },
{ SDLK_b, DIK_B },
{ SDLK_c, DIK_C },
{ SDLK_d, DIK_D },
{ SDLK_e, DIK_E },
{ SDLK_f, DIK_F },
{ SDLK_g, DIK_G },
{ SDLK_h, DIK_H },
{ SDLK_i, DIK_I },
{ SDLK_j, DIK_J },
{ SDLK_k, DIK_K },
{ SDLK_l, DIK_L },
{ SDLK_m, DIK_M },
{ SDLK_n, DIK_N },
{ SDLK_o, DIK_O },
{ SDLK_p, DIK_P },
{ SDLK_q, DIK_Q },
{ SDLK_r, DIK_R },
{ SDLK_s, DIK_S },
{ SDLK_t, DIK_T },
{ SDLK_u, DIK_U },
{ SDLK_v, DIK_V },
{ SDLK_w, DIK_W },
{ SDLK_x, DIK_X },
{ SDLK_y, DIK_Y },
{ SDLK_z, DIK_Z },
{ SDLK_LEFT, DIK_LEFT },
{ SDLK_RIGHT, DIK_RIGHT },
{ SDLK_UP, DIK_UP },
{ SDLK_DOWN, DIK_DOWN },
{ SDLK_ESCAPE, DIK_ESCAPE },
{ SDLK_RETURN, DIK_RETURN },
{ SDLK_BACKSPACE, DIK_BACKSPACE },
};
static void sdl_dinput_free(void *data)
{
sdl_dinput_t *di = data;
if (di)
{
if (di->keyboard)
{
IDirectInputDevice8_Unacquire(di->keyboard);
IDirectInputDevice8_Release(di->keyboard);
}
for (unsigned i = 0; i < MAX_PLAYERS; i++)
{
if (di->joypad[i])
{
IDirectInputDevice8_Unacquire(di->joypad[i]);
IDirectInputDevice8_Release(di->joypad[i]);
}
}
if (di->ctx)
IDirectInput8_Release(di->ctx);
free(di);
}
}
static BOOL CALLBACK enum_axes_cb(const DIDEVICEOBJECTINSTANCE *inst, void *p)
{
IDirectInputDevice8 *joypad = p;
DIPROPRANGE range;
memset(&range, 0, sizeof(range));
range.diph.dwSize = sizeof(DIPROPRANGE);
range.diph.dwHeaderSize = sizeof(DIPROPHEADER);
range.diph.dwHow = DIPH_BYID;
range.diph.dwObj = inst->dwType;
range.lMin = -32768;
range.lMax = 32767;
IDirectInputDevice8_SetProperty(joypad, DIPROP_RANGE, &range.diph);
return DIENUM_CONTINUE;
}
static BOOL CALLBACK enum_joypad_cb(const DIDEVICEINSTANCE *inst, void *p)
{
sdl_dinput_t *di = p;
unsigned active = 0;
unsigned n;
for (n = 0; n < MAX_PLAYERS; n++)
{
if (!di->joypad[n] && g_settings.input.joypad_map[n] == di->joypad_cnt)
break;
if (di->joypad[n])
active++;
}
if (active == MAX_PLAYERS) return DIENUM_STOP;
if (FAILED(IDirectInput8_CreateDevice(di->ctx, &inst->guidInstance, &di->joypad[n], NULL)))
return DIENUM_CONTINUE;
di->joypad_cnt++;
IDirectInputDevice8_SetDataFormat(di->joypad[n], &c_dfDIJoystick2);
IDirectInputDevice8_SetCooperativeLevel(di->joypad[n], di->hWnd,
DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
IDirectInputDevice8_EnumObjects(di->joypad[n], enum_axes_cb,
di->joypad[n], DIDFT_ABSAXIS);
return DIENUM_CONTINUE;
}
static void *sdl_dinput_init(void)
{
sdl_dinput_t *di = calloc(1, sizeof(*di));
if (!di)
return NULL;
CoInitialize(NULL);
SDL_SysWMinfo info;
if (!SDL_GetWMInfo(&info))
{
SSNES_ERR("Failed to get SysWM info.\n");
goto error;
}
di->hWnd = info.window;
if (FAILED(DirectInput8Create(
GetModuleHandle(NULL), 0x0800, &IID_IDirectInput8,
(void**)&di->ctx, NULL)))
{
SSNES_ERR("Failed to init DirectInput.\n");
goto error;
}
if (FAILED(IDirectInput8_CreateDevice(di->ctx, &GUID_SysKeyboard, &di->keyboard, NULL)))
{
SSNES_ERR("Failed to init DirectInput keyboard.\n");
goto error;
}
IDirectInputDevice8_SetDataFormat(di->keyboard, &c_dfDIKeyboard);
IDirectInputDevice8_SetCooperativeLevel(di->keyboard, di->hWnd,
DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
if (FAILED(IDirectInputDevice8_Acquire(di->keyboard)))
{
SSNES_ERR("Failed to acquire keyboard.\n");
goto error;
}
IDirectInput8_EnumDevices(di->ctx, DI8DEVCLASS_GAMECTRL, enum_joypad_cb, di, DIEDFL_ATTACHEDONLY);
return di;
error:
sdl_dinput_free(di);
return NULL;
}
static void sdl_poll_mouse(sdl_dinput_t *di)
{
int _x, _y;
Uint8 btn = SDL_GetRelativeMouseState(&_x, &_y);
di->mouse_x = _x;
di->mouse_y = _y;
di->mouse_l = SDL_BUTTON(SDL_BUTTON_LEFT) & btn ? 1 : 0;
di->mouse_r = SDL_BUTTON(SDL_BUTTON_RIGHT) & btn ? 1 : 0;
di->mouse_m = SDL_BUTTON(SDL_BUTTON_MIDDLE) & btn ? 1 : 0;
}
static void sdl_poll(sdl_dinput_t *di)
{
SDL_PumpEvents();
sdl_poll_mouse(di);
SDL_Event event;
while (SDL_PollEvent(&event))
{
switch (event.type)
{
case SDL_QUIT:
if (di->quitting)
{
*di->quitting = true;
return;
}
break;
case SDL_VIDEORESIZE:
if (di->should_resize)
{
*di->new_width = event.resize.w;
*di->new_height = event.resize.h;
*di->should_resize = true;
}
break;
default:
break;
}
}
}
static bool dinput_joykey_pressed(sdl_dinput_t *di, int port_num, uint16_t joykey)
{
if (joykey == NO_BTN)
return false;
// Check hat.
if (GET_HAT_DIR(joykey))
{
unsigned hat = GET_HAT(joykey);
unsigned elems = sizeof(di->joy_state[0].rgdwPOV) / sizeof(di->joy_state[0].rgdwPOV[0]);
if (hat >= elems)
return false;
unsigned pov = di->joy_state[port_num].rgdwPOV[hat];
// Magic numbers I'm not sure where originate from.
if (pov < 36000)
{
switch (GET_HAT_DIR(joykey))
{
case HAT_UP_MASK:
return (pov >= 31500) || (pov <= 4500);
case HAT_RIGHT_MASK:
return (pov >= 4500) && (pov <= 13500);
case HAT_DOWN_MASK:
return (pov >= 13500) && (pov <= 22500);
case HAT_LEFT_MASK:
return (pov >= 22500) && (pov <= 31500);
}
}
return false;
}
else
{
unsigned elems = sizeof(di->joy_state[port_num].rgbButtons) / sizeof(di->joy_state[port_num].rgbButtons[0]);
if (joykey < elems)
return di->joy_state[port_num].rgbButtons[joykey];
}
return false;
}
static bool dinput_joyaxis_pressed(sdl_dinput_t *di, int port_num, uint32_t joyaxis)
{
if (joyaxis == AXIS_NONE)
return false;
int min = -32678 * g_settings.input.axis_threshold;
int max = 32677 * g_settings.input.axis_threshold;
switch (AXIS_NEG_GET(joyaxis))
{
case 0:
return di->joy_state[port_num].lX <= min;
case 1:
return di->joy_state[port_num].lY <= min;
case 2:
return di->joy_state[port_num].lZ <= min;
case 3:
return di->joy_state[port_num].lRx <= min;
case 4:
return di->joy_state[port_num].lRy <= min;
case 5:
return di->joy_state[port_num].lRz <= min;
}
switch (AXIS_POS_GET(joyaxis))
{
case 0:
return di->joy_state[port_num].lX >= max;
case 1:
return di->joy_state[port_num].lY >= max;
case 2:
return di->joy_state[port_num].lZ >= max;
case 3:
return di->joy_state[port_num].lRx >= max;
case 4:
return di->joy_state[port_num].lRy >= max;
case 5:
return di->joy_state[port_num].lRz >= max;
}
return false;
}
static int16_t sdl_mouse_device_state(sdl_dinput_t *sdl, bool port, unsigned id)
{
// Might implement support for joypad mapping later.
(void)port;
switch (id)
{
case SNES_DEVICE_ID_MOUSE_LEFT:
return sdl->mouse_l;
case SNES_DEVICE_ID_MOUSE_RIGHT:
return sdl->mouse_r;
case SNES_DEVICE_ID_MOUSE_X:
return sdl->mouse_x;
case SNES_DEVICE_ID_MOUSE_Y:
return sdl->mouse_y;
default:
return 0;
}
}
// TODO: Missing some controllers, but hey :)
static int16_t sdl_scope_device_state(sdl_dinput_t *sdl, unsigned id)
{
switch (id)
{
case SNES_DEVICE_ID_SUPER_SCOPE_X:
return sdl->mouse_x;
case SNES_DEVICE_ID_SUPER_SCOPE_Y:
return sdl->mouse_y;
case SNES_DEVICE_ID_SUPER_SCOPE_TRIGGER:
return sdl->mouse_l;
case SNES_DEVICE_ID_SUPER_SCOPE_CURSOR:
return sdl->mouse_m;
case SNES_DEVICE_ID_SUPER_SCOPE_TURBO:
return sdl->mouse_r;
default:
return 0;
}
}
// TODO: Support two players.
static int16_t sdl_justifier_device_state(sdl_dinput_t *sdl, unsigned index, unsigned id)
{
if (index == 0)
{
switch (id)
{
case SNES_DEVICE_ID_JUSTIFIER_X:
return sdl->mouse_x;
case SNES_DEVICE_ID_JUSTIFIER_Y:
return sdl->mouse_y;
case SNES_DEVICE_ID_JUSTIFIER_TRIGGER:
return sdl->mouse_l;
case SNES_DEVICE_ID_JUSTIFIER_START:
return sdl->mouse_r;
default:
return 0;
}
}
else
return 0;
}
static bool dinput_key_pressed(sdl_dinput_t *di, int key)
{
for (unsigned i = 0; i < sizeof(key_map) / sizeof(struct sdl_dinput_map); i++)
{
if (key == key_map[i].sdl)
return di->di_state[key_map[i].di] & 0x80;
}
return false;
}
static bool dinput_is_pressed(sdl_dinput_t *di, int port_num, const struct snes_keybind *key)
{
if (dinput_key_pressed(di, key->key))
return true;
if (di->joypad[port_num] == NULL)
return false;
if (dinput_joykey_pressed(di, port_num, key->joykey))
return true;
if (dinput_joyaxis_pressed(di, port_num, key->joyaxis))
return true;
return false;
}
static int16_t joypad_device_state(sdl_dinput_t *di, const struct snes_keybind **binds, int port_num, int id)
{
const struct snes_keybind *snes_keybinds = binds[port_num];
for (int i = 0; snes_keybinds[i].id != -1; i++)
{
if (snes_keybinds[i].id == id)
return dinput_is_pressed(di, port_num, &snes_keybinds[i]) ? 1 : 0;
}
return 0;
}
static bool sdl_dinput_pressed(void *data, int key)
{
const struct snes_keybind *binds = g_settings.input.binds[0];
for (int i = 0; binds[i].id != -1; i++)
{
if (binds[i].key == key)
return dinput_is_pressed(data, 0, &binds[i]);
}
return false;
}
static int16_t sdl_dinput_state(void *data, const struct snes_keybind **binds, bool port, unsigned device, unsigned index, unsigned id)
{
switch (device)
{
case SNES_DEVICE_JOYPAD:
return joypad_device_state(data, binds, (port == SNES_PORT_1) ? 0 : 1, id);
case SNES_DEVICE_MULTITAP:
return joypad_device_state(data, binds, (port == SNES_PORT_2) ? 1 + index : 0, id);
case SNES_DEVICE_MOUSE:
return sdl_mouse_device_state(data, port, id);
case SNES_DEVICE_SUPER_SCOPE:
return sdl_scope_device_state(data, id);
case SNES_DEVICE_JUSTIFIER:
case SNES_DEVICE_JUSTIFIERS:
return sdl_justifier_device_state(data, index, id);
default:
return 0;
}
}
static void sdl_dinput_poll(void *data)
{
sdl_dinput_t *di = data;
sdl_poll(di); // Poll SDL specific things needed for SDL/GL driver.
// Keyboard
memset(di->di_state, 0, sizeof(di->di_state));
if (FAILED(IDirectInputDevice8_GetDeviceState(di->keyboard, sizeof(di->di_state), di->di_state)))
{
IDirectInputDevice8_Acquire(di->keyboard);
if (FAILED(IDirectInputDevice8_GetDeviceState(di->keyboard, sizeof(di->di_state), di->di_state)))
memset(di->di_state, 0, sizeof(di->di_state));
}
memset(di->joy_state, 0, sizeof(di->joy_state));
for (unsigned i = 0; i < MAX_PLAYERS; i++)
{
if (di->joypad[i])
{
if (FAILED(IDirectInputDevice8_Poll(di->joypad[i])))
{
IDirectInputDevice8_Acquire(di->joypad[i]);
continue;
}
IDirectInputDevice8_GetDeviceState(di->joypad[i], sizeof(DIJOYSTATE2), &di->joy_state[i]);
}
}
}
const input_driver_t input_dinput = {
.init = sdl_dinput_init,
.poll = sdl_dinput_poll,
.input_state = sdl_dinput_state,
.key_pressed = sdl_dinput_pressed,
.free = sdl_dinput_free,
.ident = "dinput"
};
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