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input: SDL support
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@957 be3aeb3a-fb24-0410-a615-afba39da0efa
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2 changed files with 323 additions and 0 deletions
320
platform/common/in_sdl.c
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320
platform/common/in_sdl.c
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/*
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* (C) Gražvydas "notaz" Ignotas, 2012
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*
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* This work is licensed under the terms of any of these licenses
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* (at your option):
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* - GNU GPL, version 2 or later.
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* - GNU LGPL, version 2.1 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include <stdio.h>
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#include <SDL.h>
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#include "input.h"
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#include "in_sdl.h"
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#define IN_SDL_PREFIX "sdl:"
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/* should be machine word for best performace */
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typedef unsigned long keybits_t;
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#define KEYBITS_WORD_BITS (sizeof(keybits_t) * 8)
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static const char * const in_sdl_keys[SDLK_LAST] = {
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[SDLK_BACKSPACE] = "backspace",
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[SDLK_TAB] = "tab",
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[SDLK_CLEAR] = "clear",
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[SDLK_RETURN] = "return",
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[SDLK_PAUSE] = "pause",
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[SDLK_ESCAPE] = "escape",
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[SDLK_SPACE] = "space",
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[SDLK_EXCLAIM] = "!",
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[SDLK_QUOTEDBL] = "\"",
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[SDLK_HASH] = "#",
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[SDLK_DOLLAR] = "$",
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[SDLK_AMPERSAND] = "&",
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[SDLK_QUOTE] = "'",
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[SDLK_LEFTPAREN] = "(",
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[SDLK_RIGHTPAREN] = ")",
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[SDLK_ASTERISK] = "*",
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[SDLK_PLUS] = "+",
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[SDLK_COMMA] = ",",
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[SDLK_MINUS] = "-",
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[SDLK_PERIOD] = ".",
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[SDLK_SLASH] = "/",
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[SDLK_0] = "0",
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[SDLK_1] = "1",
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[SDLK_2] = "2",
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[SDLK_3] = "3",
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[SDLK_4] = "4",
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[SDLK_5] = "5",
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[SDLK_6] = "6",
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[SDLK_7] = "7",
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[SDLK_8] = "8",
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[SDLK_9] = "9",
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[SDLK_COLON] = ":",
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[SDLK_SEMICOLON] = ",",
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[SDLK_LESS] = "<",
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[SDLK_EQUALS] = "=",
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[SDLK_GREATER] = ">",
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[SDLK_QUESTION] = "?",
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[SDLK_AT] = "@",
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[SDLK_LEFTBRACKET] = "[",
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[SDLK_BACKSLASH] = "\\",
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[SDLK_RIGHTBRACKET] = "]",
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[SDLK_CARET] = "^",
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[SDLK_UNDERSCORE] = "_",
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[SDLK_BACKQUOTE] = "`",
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[SDLK_a] = "a",
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[SDLK_b] = "b",
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[SDLK_c] = "c",
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[SDLK_d] = "d",
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[SDLK_e] = "e",
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[SDLK_f] = "f",
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[SDLK_g] = "g",
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[SDLK_h] = "h",
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[SDLK_i] = "i",
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[SDLK_j] = "j",
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[SDLK_k] = "k",
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[SDLK_l] = "l",
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[SDLK_m] = "m",
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[SDLK_n] = "n",
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[SDLK_o] = "o",
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[SDLK_p] = "p",
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[SDLK_q] = "q",
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[SDLK_r] = "r",
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[SDLK_s] = "s",
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[SDLK_t] = "t",
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[SDLK_u] = "u",
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[SDLK_v] = "v",
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[SDLK_w] = "w",
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[SDLK_x] = "x",
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[SDLK_y] = "y",
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[SDLK_z] = "z",
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[SDLK_DELETE] = "delete",
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[SDLK_KP0] = "[0]",
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[SDLK_KP1] = "[1]",
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[SDLK_KP2] = "[2]",
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[SDLK_KP3] = "[3]",
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[SDLK_KP4] = "[4]",
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[SDLK_KP5] = "[5]",
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[SDLK_KP6] = "[6]",
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[SDLK_KP7] = "[7]",
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[SDLK_KP8] = "[8]",
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[SDLK_KP9] = "[9]",
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[SDLK_KP_PERIOD] = "[.]",
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[SDLK_KP_DIVIDE] = "[/]",
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[SDLK_KP_MULTIPLY] = "[*]",
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[SDLK_KP_MINUS] = "[-]",
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[SDLK_KP_PLUS] = "[+]",
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[SDLK_KP_ENTER] = "enter",
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[SDLK_KP_EQUALS] = "equals",
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[SDLK_UP] = "up",
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[SDLK_DOWN] = "down",
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[SDLK_RIGHT] = "right",
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[SDLK_LEFT] = "left",
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[SDLK_DOWN] = "down",
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[SDLK_INSERT] = "insert",
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[SDLK_HOME] = "home",
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[SDLK_END] = "end",
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[SDLK_PAGEUP] = "page up",
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[SDLK_PAGEDOWN] = "page down",
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[SDLK_F1] = "f1",
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[SDLK_F2] = "f2",
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[SDLK_F3] = "f3",
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[SDLK_F4] = "f4",
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[SDLK_F5] = "f5",
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[SDLK_F6] = "f6",
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[SDLK_F7] = "f7",
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[SDLK_F8] = "f8",
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[SDLK_F9] = "f9",
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[SDLK_F10] = "f10",
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[SDLK_F11] = "f11",
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[SDLK_F12] = "f12",
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[SDLK_F13] = "f13",
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[SDLK_F14] = "f14",
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[SDLK_F15] = "f15",
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[SDLK_NUMLOCK] = "numlock",
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[SDLK_CAPSLOCK] = "caps lock",
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[SDLK_SCROLLOCK] = "scroll lock",
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[SDLK_RSHIFT] = "right shift",
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[SDLK_LSHIFT] = "left shift",
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[SDLK_RCTRL] = "right ctrl",
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[SDLK_LCTRL] = "left ctrl",
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[SDLK_RALT] = "right alt",
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[SDLK_LALT] = "left alt",
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[SDLK_RMETA] = "right meta",
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[SDLK_LMETA] = "left meta",
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[SDLK_LSUPER] = "left super", /* "Windows" keys */
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[SDLK_RSUPER] = "right super",
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[SDLK_MODE] = "alt gr",
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[SDLK_COMPOSE] = "compose",
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};
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static void in_sdl_probe(void)
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{
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keybits_t *keystate;
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keystate = calloc(SDLK_LAST / KEYBITS_WORD_BITS + 1, sizeof(keybits_t));
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if (keystate == NULL) {
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fprintf(stderr, "in_sdl: OOM\n");
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return;
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}
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in_register(IN_SDL_PREFIX "keys", -1, keystate, SDLK_LAST,
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in_sdl_keys, 0);
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}
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static void in_sdl_free(void *drv_data)
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{
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keybits_t *keystate = drv_data;
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if (keystate != NULL)
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free(keystate);
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}
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static const char * const *
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in_sdl_get_key_names(int *count)
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{
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*count = SDLK_LAST;
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return in_sdl_keys;
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}
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/* could use SDL_GetKeyState, but this gives better packing */
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static void update_keystate(keybits_t *keystate, int sym, int is_down)
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{
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keybits_t *ks_word, mask;
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mask = 1;
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mask <<= sym & (KEYBITS_WORD_BITS - 1);
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ks_word = keystate + sym / KEYBITS_WORD_BITS;
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if (is_down)
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*ks_word |= mask;
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else
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*ks_word &= ~mask;
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}
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static int in_sdl_update(void *drv_data, const int *binds, int *result)
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{
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keybits_t *keystate = drv_data, mask;
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SDL_Event event;
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int i, sym, bit, b;
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while (SDL_PollEvent(&event)) {
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if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP)
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continue;
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update_keystate(keystate, event.key.keysym.sym,
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event.type == SDL_KEYDOWN);
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}
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for (i = 0; i < SDLK_LAST / KEYBITS_WORD_BITS + 1; i++) {
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mask = keystate[i];
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if (mask == 0)
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continue;
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for (bit = 0; mask != 0; bit++, mask >>= 1) {
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if ((mask & 1) == 0)
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continue;
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sym = i * KEYBITS_WORD_BITS + bit;
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for (b = 0; b < IN_BINDTYPE_COUNT; b++)
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result[b] |= binds[IN_BIND_OFFS(sym, b)];
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}
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}
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return 0;
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}
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static int in_sdl_update_keycode(void *drv_data, int *is_down)
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{
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int ret, ret_kc = -1, ret_down = 0;
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SDL_Event event;
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ret = SDL_PollEvent(&event);
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if (ret == 0)
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goto out;
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if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP)
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goto out;
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if (event.key.type == SDL_KEYDOWN)
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ret_down = 1;
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ret_kc = event.key.keysym.sym;
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update_keystate(drv_data, ret_kc, ret_down);
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out:
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if (is_down != NULL)
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*is_down = ret_down;
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return ret_kc;
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}
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static const struct {
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short key;
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short pbtn;
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} key_pbtn_map[] =
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{
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{ SDLK_UP, PBTN_UP },
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{ SDLK_DOWN, PBTN_DOWN },
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{ SDLK_LEFT, PBTN_LEFT },
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{ SDLK_RIGHT, PBTN_RIGHT },
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/* XXX: maybe better set this from it's plat code somehow */
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{ SDLK_RETURN, PBTN_MOK },
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{ SDLK_ESCAPE, PBTN_MBACK },
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{ SDLK_a, PBTN_MA2 },
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{ SDLK_s, PBTN_MA3 },
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{ SDLK_BACKSLASH, PBTN_MENU },
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{ SDLK_LEFTBRACKET, PBTN_L },
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{ SDLK_RIGHTBRACKET, PBTN_R },
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};
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#define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0]))
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static int in_sdl_menu_translate(void *drv_data, int keycode, char *charcode)
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{
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int ret = 0;
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int i;
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if (keycode < 0)
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{
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/* menu -> kc */
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keycode = -keycode;
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for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
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if (key_pbtn_map[i].pbtn == keycode)
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return key_pbtn_map[i].key;
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}
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else
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{
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for (i = 0; i < KEY_PBTN_MAP_SIZE; i++) {
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if (key_pbtn_map[i].key == keycode) {
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ret = key_pbtn_map[i].pbtn;
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break;
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}
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}
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if (charcode != NULL && (unsigned int)keycode < SDLK_LAST &&
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in_sdl_keys[keycode] != NULL && in_sdl_keys[keycode][1] == 0)
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{
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ret |= PBTN_CHAR;
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*charcode = in_sdl_keys[keycode][0];
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}
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}
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return ret;
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}
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static const in_drv_t in_sdl_drv = {
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.prefix = IN_SDL_PREFIX,
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.probe = in_sdl_probe,
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.free = in_sdl_free,
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.get_key_names = in_sdl_get_key_names,
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.update = in_sdl_update,
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.update_keycode = in_sdl_update_keycode,
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.menu_translate = in_sdl_menu_translate,
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};
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void in_sdl_init(const struct in_default_bind *defbinds)
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{
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in_register_driver(&in_sdl_drv, defbinds);
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}
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3
platform/common/in_sdl.h
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3
platform/common/in_sdl.h
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struct in_default_bind;
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void in_sdl_init(const struct in_default_bind *defbinds);
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