mirror of
https://github.com/libretro/RetroArch.git
synced 2024-10-07 22:33:27 +00:00
526 lines
13 KiB
C
526 lines
13 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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#undef DIRECTINPUT_VERSION
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#define DIRECTINPUT_VERSION 0x0800
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#include <dinput.h>
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#include "../general.h"
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#include "../boolean.h"
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#include "input_common.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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// Context has to be global as joypads also ride on this context.
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static LPDIRECTINPUT8 g_ctx;
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struct dinput_input
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{
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LPDIRECTINPUTDEVICE8 keyboard;
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LPDIRECTINPUTDEVICE8 mouse; // TODO.
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const rarch_joypad_driver_t *joypad;
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uint8_t state[256];
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int rk_to_di_lut[RETROK_LAST];
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};
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struct dinput_joypad
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{
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LPDIRECTINPUTDEVICE8 joypad;
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DIJOYSTATE2 joy_state;
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};
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struct key_map
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{
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int di;
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int rk;
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};
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static const struct key_map rk_to_di[] = {
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{ DIK_LEFT, RETROK_LEFT },
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{ DIK_RIGHT, RETROK_RIGHT },
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{ DIK_UP, RETROK_UP },
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{ DIK_DOWN, RETROK_DOWN },
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{ DIK_RETURN, RETROK_RETURN },
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{ DIK_TAB, RETROK_TAB },
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{ DIK_INSERT, RETROK_INSERT },
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{ DIK_DELETE, RETROK_DELETE },
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{ DIK_RSHIFT, RETROK_RSHIFT },
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{ DIK_LSHIFT, RETROK_LSHIFT },
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{ DIK_LCONTROL, RETROK_LCTRL },
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{ DIK_END, RETROK_END },
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{ DIK_HOME, RETROK_HOME },
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{ DIK_NEXT, RETROK_PAGEDOWN },
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{ DIK_PRIOR, RETROK_PAGEUP },
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{ DIK_LALT, RETROK_LALT },
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{ DIK_SPACE, RETROK_SPACE },
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{ DIK_ESCAPE, RETROK_ESCAPE },
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{ DIK_BACKSPACE, RETROK_BACKSPACE },
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{ DIK_NUMPADENTER, RETROK_KP_ENTER },
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{ DIK_NUMPADPLUS, RETROK_KP_PLUS },
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{ DIK_NUMPADMINUS, RETROK_KP_MINUS },
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{ DIK_NUMPADSTAR, RETROK_KP_MULTIPLY },
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{ DIK_NUMPADSLASH, RETROK_KP_DIVIDE },
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{ DIK_GRAVE, RETROK_BACKQUOTE },
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{ DIK_PAUSE, RETROK_PAUSE },
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{ DIK_NUMPAD0, RETROK_KP0 },
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{ DIK_NUMPAD1, RETROK_KP1 },
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{ DIK_NUMPAD2, RETROK_KP2 },
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{ DIK_NUMPAD3, RETROK_KP3 },
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{ DIK_NUMPAD4, RETROK_KP4 },
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{ DIK_NUMPAD5, RETROK_KP5 },
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{ DIK_NUMPAD6, RETROK_KP6 },
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{ DIK_NUMPAD7, RETROK_KP7 },
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{ DIK_NUMPAD8, RETROK_KP8 },
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{ DIK_NUMPAD9, RETROK_KP9 },
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{ DIK_0, RETROK_0 },
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{ DIK_1, RETROK_1 },
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{ DIK_2, RETROK_2 },
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{ DIK_3, RETROK_3 },
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{ DIK_4, RETROK_4 },
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{ DIK_5, RETROK_5 },
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{ DIK_6, RETROK_6 },
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{ DIK_7, RETROK_7 },
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{ DIK_8, RETROK_8 },
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{ DIK_9, RETROK_9 },
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{ DIK_F1, RETROK_F1 },
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{ DIK_F2, RETROK_F2 },
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{ DIK_F3, RETROK_F3 },
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{ DIK_F4, RETROK_F4 },
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{ DIK_F5, RETROK_F5 },
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{ DIK_F6, RETROK_F6 },
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{ DIK_F7, RETROK_F7 },
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{ DIK_F8, RETROK_F8 },
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{ DIK_F9, RETROK_F9 },
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{ DIK_F10, RETROK_F10 },
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{ DIK_F11, RETROK_F11 },
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{ DIK_F12, RETROK_F12 },
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{ DIK_A, RETROK_a },
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{ DIK_B, RETROK_b },
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{ DIK_C, RETROK_c },
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{ DIK_D, RETROK_d },
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{ DIK_E, RETROK_e },
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{ DIK_F, RETROK_f },
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{ DIK_G, RETROK_g },
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{ DIK_H, RETROK_h },
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{ DIK_I, RETROK_i },
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{ DIK_J, RETROK_j },
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{ DIK_K, RETROK_k },
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{ DIK_L, RETROK_l },
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{ DIK_M, RETROK_m },
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{ DIK_N, RETROK_n },
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{ DIK_O, RETROK_o },
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{ DIK_P, RETROK_p },
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{ DIK_Q, RETROK_q },
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{ DIK_R, RETROK_r },
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{ DIK_S, RETROK_s },
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{ DIK_T, RETROK_t },
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{ DIK_U, RETROK_u },
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{ DIK_V, RETROK_v },
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{ DIK_W, RETROK_w },
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{ DIK_X, RETROK_x },
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{ DIK_Y, RETROK_y },
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{ DIK_Z, RETROK_z },
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};
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static void init_lut(int *lut)
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{
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for (unsigned i = 0; i < sizeof(rk_to_di) / sizeof(rk_to_di[0]); i++)
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lut[rk_to_di[i].rk] = rk_to_di[i].di;
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}
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static unsigned g_joypad_cnt;
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static struct dinput_joypad g_pads[MAX_PLAYERS];
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static void dinput_destroy_context(void)
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{
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if (g_ctx)
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{
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IDirectInput8_Release(g_ctx);
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g_ctx = NULL;
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}
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}
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static bool dinput_init_context(void)
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{
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if (g_ctx)
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return true;
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if (driver.display_type != RARCH_DISPLAY_WIN32)
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{
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RARCH_ERR("Cannot open DInput as no Win32 window is present.\n");
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return false;
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}
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CoInitialize(NULL);
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// Who said we shouldn't have same call signature in a COM API? <_<
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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**)&g_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**)&g_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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return false;
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}
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return true;
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}
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static void *dinput_init(void)
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{
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if (!dinput_init_context())
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return NULL;
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struct dinput_input *di = (struct dinput_input*)calloc(1, sizeof(*di));
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if (!di)
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return NULL;
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#ifdef __cplusplus
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if (FAILED(IDirectInput8_CreateDevice(g_ctx, GUID_SysKeyboard, &di->keyboard, NULL)))
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#else
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if (FAILED(IDirectInput8_CreateDevice(g_ctx, &GUID_SysKeyboard, &di->keyboard, NULL)))
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#endif
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goto error;
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IDirectInputDevice8_SetDataFormat(di->keyboard, &c_dfDIKeyboard);
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IDirectInputDevice8_SetCooperativeLevel(di->keyboard,
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(HWND)driver.video_window, DISCL_NONEXCLUSIVE | DISCL_FOREGROUND);
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IDirectInputDevice8_Acquire(di->keyboard);
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init_lut(di->rk_to_di_lut);
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di->joypad = input_joypad_init_first();
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return di;
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error:
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dinput_destroy_context();
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free(di);
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return NULL;
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}
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static void dinput_poll(void *data)
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{
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struct dinput_input *di = (struct dinput_input*)data;
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memset(di->state, 0, sizeof(di->state));
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if (FAILED(IDirectInputDevice8_GetDeviceState(di->keyboard,
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sizeof(di->state), di->state)))
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{
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IDirectInputDevice8_Acquire(di->keyboard);
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if (FAILED(IDirectInputDevice8_GetDeviceState(di->keyboard, sizeof(di->state), di->state)))
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memset(di->state, 0, sizeof(di->state));
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}
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input_joypad_poll(di->joypad);
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}
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static bool dinput_keyboard_pressed(struct dinput_input *di, unsigned key)
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{
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if (key >= RETROK_LAST)
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return false;
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return di->state[di->rk_to_di_lut[key]] & 0x80;
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}
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static bool dinput_is_pressed(struct dinput_input *di, const struct retro_keybind *binds,
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unsigned port, unsigned id)
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{
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if (id >= RARCH_BIND_LIST_END)
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return false;
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const struct retro_keybind *bind = &binds[id];
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return dinput_keyboard_pressed(di, bind->key) || input_joypad_pressed(di->joypad, port, bind);
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}
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static bool dinput_key_pressed(void *data, int key)
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{
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return dinput_is_pressed((struct dinput_input*)data, g_settings.input.binds[0], 0, key);
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}
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static int16_t dinput_input_state(void *data,
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const struct retro_keybind **binds, unsigned port,
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unsigned device, unsigned index, unsigned id)
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{
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struct dinput_input *di = (struct dinput_input*)data;
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switch (device)
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{
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case RETRO_DEVICE_JOYPAD:
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return dinput_is_pressed(di, binds[port], port, id);
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case RETRO_DEVICE_KEYBOARD:
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return dinput_keyboard_pressed(di, id);
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case RETRO_DEVICE_ANALOG:
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return input_joypad_analog(di->joypad, port, index, id, g_settings.input.binds[port]);
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case RETRO_DEVICE_MOUSE: // TODO.
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case RETRO_DEVICE_LIGHTGUN:
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return 0;
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default:
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return 0;
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}
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}
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static void dinput_free(void *data)
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{
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struct dinput_input *di = (struct dinput_input*)data;
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LPDIRECTINPUT8 hold_ctx = g_ctx;
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if (di)
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{
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g_ctx = NULL; // Prevent a joypad driver to kill our context prematurely.
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di->joypad->destroy();
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g_ctx = hold_ctx;
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if (di->keyboard)
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IDirectInputDevice8_Release(di->keyboard);
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free(di);
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}
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dinput_destroy_context();
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}
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const input_driver_t input_dinput = {
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dinput_init,
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dinput_poll,
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dinput_input_state,
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dinput_key_pressed,
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dinput_free,
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"dinput",
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};
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static void dinput_joypad_destroy(void)
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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 (g_pads[i].joypad)
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{
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IDirectInputDevice8_Unacquire(g_pads[i].joypad);
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IDirectInputDevice8_Release(g_pads[i].joypad);
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}
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}
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g_joypad_cnt = 0;
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memset(g_pads, 0, sizeof(g_pads));
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// Can be blocked by global Dinput context.
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dinput_destroy_context();
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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 = -0x7fff;
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range.lMax = 0x7fff;
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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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(void)p;
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if (g_joypad_cnt == MAX_PLAYERS)
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return DIENUM_STOP;
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LPDIRECTINPUTDEVICE8 *pad = &g_pads[g_joypad_cnt].joypad;
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#ifdef __cplusplus
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if (FAILED(IDirectInput8_CreateDevice(g_ctx, inst->guidInstance, pad, NULL)))
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#else
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if (FAILED(IDirectInput8_CreateDevice(g_ctx, &inst->guidInstance, pad, NULL)))
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#endif
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return DIENUM_CONTINUE;
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IDirectInputDevice8_SetDataFormat(*pad, &c_dfDIJoystick2);
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IDirectInputDevice8_SetCooperativeLevel(*pad, (HWND)driver.video_window,
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DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
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IDirectInputDevice8_EnumObjects(*pad, enum_axes_cb,
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*pad, DIDFT_ABSAXIS);
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g_joypad_cnt++;
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return DIENUM_CONTINUE;
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}
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static bool dinput_joypad_init(void)
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{
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if (!dinput_init_context())
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return false;
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RARCH_LOG("Enumerating DInput joypads ...\n");
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IDirectInput8_EnumDevices(g_ctx, DI8DEVCLASS_GAMECTRL,
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enum_joypad_cb, NULL, DIEDFL_ATTACHEDONLY);
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RARCH_LOG("Done enumerating DInput joypads ...\n");
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return true;
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}
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static bool dinput_joypad_button(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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const struct dinput_joypad *pad = &g_pads[port_num];
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if (!pad->joypad)
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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(pad->joy_state.rgdwPOV) / sizeof(pad->joy_state.rgdwPOV[0]);
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if (hat >= elems)
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return false;
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unsigned pov = pad->joy_state.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(pad->joy_state.rgbButtons) / sizeof(pad->joy_state.rgbButtons[0]);
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if (joykey < elems)
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return pad->joy_state.rgbButtons[joykey];
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}
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return false;
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}
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static int16_t dinput_joypad_axis(unsigned port_num, uint32_t joyaxis)
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{
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if (joyaxis == AXIS_NONE)
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return 0;
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const struct dinput_joypad *pad = &g_pads[port_num];
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if (!pad->joypad)
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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 = pad->joy_state.lX; break;
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case 1: val = pad->joy_state.lY; break;
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case 2: val = pad->joy_state.lZ; break;
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case 3: val = pad->joy_state.lRx; break;
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case 4: val = pad->joy_state.lRy; break;
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case 5: val = pad->joy_state.lRz; break;
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}
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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 void dinput_joypad_poll(void)
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{
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for (unsigned i = 0; i < MAX_PLAYERS; i++)
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{
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struct dinput_joypad *pad = &g_pads[i];
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if (pad->joypad)
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{
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memset(&pad->joy_state, 0, sizeof(pad->joy_state));
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if (FAILED(IDirectInputDevice8_Poll(pad->joypad)))
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{
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if (FAILED(IDirectInputDevice8_Acquire(pad->joypad)))
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{
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memset(&pad->joy_state, 0, sizeof(DIJOYSTATE2));
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continue;
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}
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// If this fails, something *really* bad must have happened.
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if (FAILED(IDirectInputDevice8_Poll(pad->joypad)))
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|
{
|
|
memset(&pad->joy_state, 0, sizeof(DIJOYSTATE2));
|
|
continue;
|
|
}
|
|
}
|
|
|
|
IDirectInputDevice8_GetDeviceState(pad->joypad,
|
|
sizeof(DIJOYSTATE2), &pad->joy_state);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool dinput_joypad_query_pad(unsigned pad)
|
|
{
|
|
return pad < MAX_PLAYERS && g_pads[pad].joypad;
|
|
}
|
|
|
|
const rarch_joypad_driver_t dinput_joypad = {
|
|
dinput_joypad_init,
|
|
dinput_joypad_query_pad,
|
|
dinput_joypad_destroy,
|
|
dinput_joypad_button,
|
|
dinput_joypad_axis,
|
|
dinput_joypad_poll,
|
|
"dinput",
|
|
};
|
|
|