mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-24 00:20:01 +00:00
273 lines
7.0 KiB
C
273 lines
7.0 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "rarch_dinput.h"
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#include "SDL.h"
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#include "SDL_syswm.h"
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#include "../boolean.h"
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include "../gfx/gfx_context.h"
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void sdl_dinput_free(sdl_dinput_t *di)
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{
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if (di)
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{
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for (unsigned i = 0; i < MAX_PLAYERS; i++)
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{
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if (di->joypad[i])
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{
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IDirectInputDevice8_Unacquire(di->joypad[i]);
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IDirectInputDevice8_Release(di->joypad[i]);
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}
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}
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if (di->ctx)
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IDirectInput8_Release(di->ctx);
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free(di);
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}
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}
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static BOOL CALLBACK enum_axes_cb(const DIDEVICEOBJECTINSTANCE *inst, void *p)
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{
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LPDIRECTINPUTDEVICE8 joypad = (LPDIRECTINPUTDEVICE8)p;
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DIPROPRANGE range;
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memset(&range, 0, sizeof(range));
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range.diph.dwSize = sizeof(DIPROPRANGE);
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range.diph.dwHeaderSize = sizeof(DIPROPHEADER);
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range.diph.dwHow = DIPH_BYID;
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range.diph.dwObj = inst->dwType;
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range.lMin = -32768;
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range.lMax = 32767;
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IDirectInputDevice8_SetProperty(joypad, DIPROP_RANGE, &range.diph);
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return DIENUM_CONTINUE;
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}
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static BOOL CALLBACK enum_joypad_cb(const DIDEVICEINSTANCE *inst, void *p)
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{
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sdl_dinput_t *di = (sdl_dinput_t*)p;
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unsigned active = 0;
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unsigned n;
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for (n = 0; n < MAX_PLAYERS; n++)
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{
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if (!di->joypad[n] && g_settings.input.joypad_map[n] == (int)di->joypad_cnt)
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break;
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if (di->joypad[n])
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active++;
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}
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if (active == MAX_PLAYERS) return DIENUM_STOP;
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di->joypad_cnt++;
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if (n == MAX_PLAYERS)
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return DIENUM_CONTINUE;
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#ifdef __cplusplus
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if (FAILED(IDirectInput8_CreateDevice(di->ctx, inst->guidInstance, &di->joypad[n], NULL)))
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#else
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if (FAILED(IDirectInput8_CreateDevice(di->ctx, &inst->guidInstance, &di->joypad[n], NULL)))
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#endif
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return DIENUM_CONTINUE;
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IDirectInputDevice8_SetDataFormat(di->joypad[n], &c_dfDIJoystick2);
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IDirectInputDevice8_SetCooperativeLevel(di->joypad[n], di->hWnd,
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DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
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IDirectInputDevice8_EnumObjects(di->joypad[n], enum_axes_cb,
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di->joypad[n], DIDFT_ABSAXIS);
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return DIENUM_CONTINUE;
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}
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sdl_dinput_t* sdl_dinput_init(void)
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{
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sdl_dinput_t *di = (sdl_dinput_t*)calloc(1, sizeof(*di));
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if (!di)
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return NULL;
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CoInitialize(NULL);
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SDL_SysWMinfo info;
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if (!gfx_ctx_get_wm_info(&info))
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{
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RARCH_ERR("Failed to get SysWM info.\n");
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goto error;
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}
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di->hWnd = info.window;
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#ifdef __cplusplus
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if (FAILED(DirectInput8Create(
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GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8,
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(void**)&di->ctx, NULL)))
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#else
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if (FAILED(DirectInput8Create(
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GetModuleHandle(NULL), DIRECTINPUT_VERSION, &IID_IDirectInput8,
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(void**)&di->ctx, NULL)))
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#endif
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{
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RARCH_ERR("Failed to init DirectInput.\n");
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goto error;
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}
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RARCH_LOG("Enumerating DInput devices ...\n");
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IDirectInput8_EnumDevices(di->ctx, DI8DEVCLASS_GAMECTRL, enum_joypad_cb, di, DIEDFL_ATTACHEDONLY);
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RARCH_LOG("Done enumerating DInput devices ...\n");
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return di;
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error:
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sdl_dinput_free(di);
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return NULL;
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}
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static bool dinput_joykey_pressed(sdl_dinput_t *di, unsigned port_num, uint16_t joykey)
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{
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if (joykey == NO_BTN)
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return false;
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// Check hat.
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if (GET_HAT_DIR(joykey))
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{
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unsigned hat = GET_HAT(joykey);
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unsigned elems = sizeof(di->joy_state[0].rgdwPOV) / sizeof(di->joy_state[0].rgdwPOV[0]);
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if (hat >= elems)
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return false;
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unsigned pov = di->joy_state[port_num].rgdwPOV[hat];
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// Magic numbers I'm not sure where originate from.
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if (pov < 36000)
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{
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switch (GET_HAT_DIR(joykey))
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{
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case HAT_UP_MASK:
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return (pov >= 31500) || (pov <= 4500);
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case HAT_RIGHT_MASK:
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return (pov >= 4500) && (pov <= 13500);
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case HAT_DOWN_MASK:
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return (pov >= 13500) && (pov <= 22500);
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case HAT_LEFT_MASK:
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return (pov >= 22500) && (pov <= 31500);
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}
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}
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return false;
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}
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else
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{
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unsigned elems = sizeof(di->joy_state[0].rgbButtons) / sizeof(di->joy_state[0].rgbButtons[0]);
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if (joykey < elems)
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return di->joy_state[port_num].rgbButtons[joykey];
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}
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return false;
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}
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int16_t sdl_dinput_axis(sdl_dinput_t *di, unsigned port_num, const struct retro_keybind *key)
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{
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uint32_t joyaxis = key->joyaxis;
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if (joyaxis == AXIS_NONE)
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return 0;
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int val = 0;
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int axis = -1;
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bool is_neg = false;
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bool is_pos = false;
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if (AXIS_NEG_GET(joyaxis) <= 5)
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{
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axis = AXIS_NEG_GET(joyaxis);
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is_neg = true;
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}
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else if (AXIS_POS_GET(joyaxis) <= 5)
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{
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axis = AXIS_POS_GET(joyaxis);
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is_pos = true;
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}
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switch (axis)
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{
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case 0: val = di->joy_state[port_num].lX; break;
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case 1: val = di->joy_state[port_num].lY; break;
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case 2: val = di->joy_state[port_num].lZ; break;
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case 3: val = di->joy_state[port_num].lRx; break;
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case 4: val = di->joy_state[port_num].lRy; break;
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case 5: val = di->joy_state[port_num].lRz; break;
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}
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if (val < -0x7fff) // So abs() of -0x8000 can't mess us up.
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val = -0x7fff;
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if (is_neg && val > 0)
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val = 0;
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else if (is_pos && val < 0)
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val = 0;
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return val;
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}
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static bool dinput_joyaxis_pressed(sdl_dinput_t *di, unsigned port_num, const struct retro_keybind *key)
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{
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if (key->joyaxis == AXIS_NONE)
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return false;
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int min = 0x7fff * g_settings.input.axis_threshold;
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int16_t val = sdl_dinput_axis(di, port_num, key);
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return abs(val) > min;
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}
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bool sdl_dinput_pressed(sdl_dinput_t *di, unsigned port_num, const struct retro_keybind *key)
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{
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if (di->joypad[port_num] == NULL)
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return false;
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if (dinput_joykey_pressed(di, port_num, key->joykey))
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return true;
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if (dinput_joyaxis_pressed(di, port_num, key))
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return true;
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return false;
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}
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void sdl_dinput_poll(sdl_dinput_t *di)
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{
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memset(di->joy_state, 0, sizeof(di->joy_state));
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for (unsigned i = 0; i < MAX_PLAYERS; i++)
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{
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if (di->joypad[i])
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{
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if (FAILED(IDirectInputDevice8_Poll(di->joypad[i])))
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{
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IDirectInputDevice8_Acquire(di->joypad[i]);
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continue;
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}
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IDirectInputDevice8_GetDeviceState(di->joypad[i], sizeof(DIJOYSTATE2), &di->joy_state[i]);
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}
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}
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}
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