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RetroArch/input/input_common.c
twinaphex 5f611f7270 More documentation for input_common.c
2015-01-12 04:19:57 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* RetroArch 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.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "input_common.h"
#include "input_keymaps.h"
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "../general.h"
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
static const char *bind_user_prefix[MAX_USERS] = {
"input_player1",
"input_player2",
"input_player3",
"input_player4",
"input_player5",
"input_player6",
"input_player7",
"input_player8",
"input_player9",
"input_player10",
"input_player11",
"input_player12",
"input_player13",
"input_player14",
"input_player15",
"input_player16",
};
#define DECLARE_BIND(x, bind, desc) { true, 0, #x, desc, bind }
#define DECLARE_META_BIND(level, x, bind, desc) { true, level, #x, desc, bind }
const struct input_bind_map input_config_bind_map[RARCH_BIND_LIST_END_NULL] = {
DECLARE_BIND(b, RETRO_DEVICE_ID_JOYPAD_B, "B button (down)"),
DECLARE_BIND(y, RETRO_DEVICE_ID_JOYPAD_Y, "Y button (left)"),
DECLARE_BIND(select, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select button"),
DECLARE_BIND(start, RETRO_DEVICE_ID_JOYPAD_START, "Start button"),
DECLARE_BIND(up, RETRO_DEVICE_ID_JOYPAD_UP, "Up D-pad"),
DECLARE_BIND(down, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down D-pad"),
DECLARE_BIND(left, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left D-pad"),
DECLARE_BIND(right, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right D-pad"),
DECLARE_BIND(a, RETRO_DEVICE_ID_JOYPAD_A, "A button (right)"),
DECLARE_BIND(x, RETRO_DEVICE_ID_JOYPAD_X, "X button (top)"),
DECLARE_BIND(l, RETRO_DEVICE_ID_JOYPAD_L, "L button (shoulder)"),
DECLARE_BIND(r, RETRO_DEVICE_ID_JOYPAD_R, "R button (shoulder)"),
DECLARE_BIND(l2, RETRO_DEVICE_ID_JOYPAD_L2, "L2 button (trigger)"),
DECLARE_BIND(r2, RETRO_DEVICE_ID_JOYPAD_R2, "R2 button (trigger)"),
DECLARE_BIND(l3, RETRO_DEVICE_ID_JOYPAD_L3, "L3 button (thumb)"),
DECLARE_BIND(r3, RETRO_DEVICE_ID_JOYPAD_R3, "R3 button (thumb)"),
DECLARE_BIND(l_x_plus, RARCH_ANALOG_LEFT_X_PLUS, "Left analog X+ (right)"),
DECLARE_BIND(l_x_minus, RARCH_ANALOG_LEFT_X_MINUS, "Left analog X- (left)"),
DECLARE_BIND(l_y_plus, RARCH_ANALOG_LEFT_Y_PLUS, "Left analog Y+ (down)"),
DECLARE_BIND(l_y_minus, RARCH_ANALOG_LEFT_Y_MINUS, "Left analog Y- (up)"),
DECLARE_BIND(r_x_plus, RARCH_ANALOG_RIGHT_X_PLUS, "Right analog X+ (right)"),
DECLARE_BIND(r_x_minus, RARCH_ANALOG_RIGHT_X_MINUS, "Right analog X- (left)"),
DECLARE_BIND(r_y_plus, RARCH_ANALOG_RIGHT_Y_PLUS, "Right analog Y+ (down)"),
DECLARE_BIND(r_y_minus, RARCH_ANALOG_RIGHT_Y_MINUS, "Right analog Y- (up)"),
DECLARE_BIND(turbo, RARCH_TURBO_ENABLE, "Turbo enable"),
DECLARE_META_BIND(1, toggle_fast_forward, RARCH_FAST_FORWARD_KEY, "Fast forward toggle"),
DECLARE_META_BIND(2, hold_fast_forward, RARCH_FAST_FORWARD_HOLD_KEY, "Fast forward hold"),
DECLARE_META_BIND(1, load_state, RARCH_LOAD_STATE_KEY, "Load state"),
DECLARE_META_BIND(1, save_state, RARCH_SAVE_STATE_KEY, "Save state"),
DECLARE_META_BIND(2, toggle_fullscreen, RARCH_FULLSCREEN_TOGGLE_KEY, "Fullscreen toggle"),
DECLARE_META_BIND(2, exit_emulator, RARCH_QUIT_KEY, "Quit RetroArch"),
DECLARE_META_BIND(2, state_slot_increase, RARCH_STATE_SLOT_PLUS, "Savestate slot +"),
DECLARE_META_BIND(2, state_slot_decrease, RARCH_STATE_SLOT_MINUS, "Savestate slot -"),
DECLARE_META_BIND(1, rewind, RARCH_REWIND, "Rewind"),
DECLARE_META_BIND(2, movie_record_toggle, RARCH_MOVIE_RECORD_TOGGLE, "Movie record toggle"),
DECLARE_META_BIND(2, pause_toggle, RARCH_PAUSE_TOGGLE, "Pause toggle"),
DECLARE_META_BIND(2, frame_advance, RARCH_FRAMEADVANCE, "Frameadvance"),
DECLARE_META_BIND(2, reset, RARCH_RESET, "Reset game"),
DECLARE_META_BIND(2, shader_next, RARCH_SHADER_NEXT, "Next shader"),
DECLARE_META_BIND(2, shader_prev, RARCH_SHADER_PREV, "Previous shader"),
DECLARE_META_BIND(2, cheat_index_plus, RARCH_CHEAT_INDEX_PLUS, "Cheat index +"),
DECLARE_META_BIND(2, cheat_index_minus, RARCH_CHEAT_INDEX_MINUS, "Cheat index -"),
DECLARE_META_BIND(2, cheat_toggle, RARCH_CHEAT_TOGGLE, "Cheat toggle"),
DECLARE_META_BIND(2, screenshot, RARCH_SCREENSHOT, "Take screenshot"),
DECLARE_META_BIND(2, audio_mute, RARCH_MUTE, "Audio mute toggle"),
DECLARE_META_BIND(2, netplay_flip_players, RARCH_NETPLAY_FLIP, "Netplay flip users"),
DECLARE_META_BIND(2, slowmotion, RARCH_SLOWMOTION, "Slow motion"),
DECLARE_META_BIND(2, enable_hotkey, RARCH_ENABLE_HOTKEY, "Enable hotkeys"),
DECLARE_META_BIND(2, volume_up, RARCH_VOLUME_UP, "Volume +"),
DECLARE_META_BIND(2, volume_down, RARCH_VOLUME_DOWN, "Volume -"),
DECLARE_META_BIND(2, overlay_next, RARCH_OVERLAY_NEXT, "Overlay next"),
DECLARE_META_BIND(2, disk_eject_toggle, RARCH_DISK_EJECT_TOGGLE, "Disk eject toggle"),
DECLARE_META_BIND(2, disk_next, RARCH_DISK_NEXT, "Disk next"),
DECLARE_META_BIND(2, disk_prev, RARCH_DISK_NEXT, "Disk prev"),
DECLARE_META_BIND(2, grab_mouse_toggle, RARCH_GRAB_MOUSE_TOGGLE, "Grab mouse toggle"),
#ifdef HAVE_MENU
DECLARE_META_BIND(1, menu_toggle, RARCH_MENU_TOGGLE, "Menu toggle"),
#endif
};
/**
* input_translate_coord_viewport:
* @mouse_x : Pointer X coordinate.
* @mouse_y : Pointer Y coordinate.
* @res_x : Scaled X coordinate.
* @res_y : Scaled Y coordinate.
* @res_screen_x : Scaled screen X coordinate.
* @res_screen_y : Scaled screen Y coordinate.
*
* Translates pointer [X,Y] coordinates into scaled screen
* coordinates based on viewport info.
*
* Returns: true (1) if successful, false if video driver doesn't support
* viewport info.
**/
bool input_translate_coord_viewport(int mouse_x, int mouse_y,
int16_t *res_x, int16_t *res_y, int16_t *res_screen_x,
int16_t *res_screen_y)
{
int scaled_screen_x, scaled_screen_y, scaled_x, scaled_y;
struct rarch_viewport vp = {0};
bool have_viewport_info = driver.video && driver.video->viewport_info;
if (!have_viewport_info)
return false;
driver.video->viewport_info(driver.video_data, &vp);
scaled_screen_x = (2 * mouse_x * 0x7fff) / (int)vp.full_width - 0x7fff;
scaled_screen_y = (2 * mouse_y * 0x7fff) / (int)vp.full_height - 0x7fff;
if (scaled_screen_x < -0x7fff || scaled_screen_x > 0x7fff)
scaled_screen_x = -0x8000; /* OOB */
if (scaled_screen_y < -0x7fff || scaled_screen_y > 0x7fff)
scaled_screen_y = -0x8000; /* OOB */
mouse_x -= vp.x;
mouse_y -= vp.y;
scaled_x = (2 * mouse_x * 0x7fff) / (int)vp.width - 0x7fff;
scaled_y = (2 * mouse_y * 0x7fff) / (int)vp.height - 0x7fff;
if (scaled_x < -0x7fff || scaled_x > 0x7fff)
scaled_x = -0x8000; /* OOB */
if (scaled_y < -0x7fff || scaled_y > 0x7fff)
scaled_y = -0x8000; /* OOB */
*res_x = scaled_x;
*res_y = scaled_y;
*res_screen_x = scaled_screen_x;
*res_screen_y = scaled_screen_y;
return true;
}
void input_config_parse_key(config_file_t *conf,
const char *prefix, const char *btn,
struct retro_keybind *bind)
{
char tmp[64], key[64];
snprintf(key, sizeof(key), "%s_%s", prefix, btn);
if (config_get_array(conf, key, tmp, sizeof(tmp)))
bind->key = input_translate_str_to_rk(tmp);
}
const char *input_config_get_prefix(unsigned user, bool meta)
{
if (user == 0)
return meta ? "input" : bind_user_prefix[user];
else if (user != 0 && !meta)
return bind_user_prefix[user];
/* Don't bother with meta bind for anyone else than first user. */
return NULL;
}
static enum retro_key find_rk_bind(const char *str)
{
size_t i;
for (i = 0; input_config_key_map[i].str; i++)
{
if (strcasecmp(input_config_key_map[i].str, str) == 0)
return input_config_key_map[i].key;
}
RARCH_WARN("Key name %s not found.\n", str);
return RETROK_UNKNOWN;
}
/**
* input_translate_str_to_rk:
* @str : String to translate to key ID.
*
* Translates tring representation to key identifier.
*
* Returns: key identifier.
**/
enum retro_key input_translate_str_to_rk(const char *str)
{
if (strlen(str) == 1 && isalpha(*str))
return (enum retro_key)(RETROK_a + (tolower(*str) - (int)'a'));
return find_rk_bind(str);
}
/**
* input_translate_str_to_bind_id:
* @str : String to translate to bind ID.
*
* Translate string representation to bind ID.
*
* Returns: Bind ID value on success, otherwise RARCH_BIND_LIST_END on not found.
**/
unsigned input_translate_str_to_bind_id(const char *str)
{
unsigned i;
for (i = 0; input_config_bind_map[i].valid; i++)
if (!strcmp(str, input_config_bind_map[i].base))
return i;
return RARCH_BIND_LIST_END;
}
static void parse_hat(struct retro_keybind *bind, const char *str)
{
char *dir = NULL;
uint16_t hat_dir = 0, hat;
if (!bind || !str)
return;
if (!isdigit(*str))
return;
hat = strtoul(str, &dir, 0);
if (!dir)
{
RARCH_WARN("Found invalid hat in config!\n");
return;
}
if (strcasecmp(dir, "up") == 0)
hat_dir = HAT_UP_MASK;
else if (strcasecmp(dir, "down") == 0)
hat_dir = HAT_DOWN_MASK;
else if (strcasecmp(dir, "left") == 0)
hat_dir = HAT_LEFT_MASK;
else if (strcasecmp(dir, "right") == 0)
hat_dir = HAT_RIGHT_MASK;
if (hat_dir)
bind->joykey = HAT_MAP(hat, hat_dir);
}
void input_config_parse_joy_button(config_file_t *conf, const char *prefix,
const char *btn, struct retro_keybind *bind)
{
char tmp[64], key[64], key_label[64];
char *tmp_a = NULL;
snprintf(key, sizeof(key), "%s_%s_btn", prefix, btn);
snprintf(key_label, sizeof(key_label), "%s_%s_btn_label", prefix, btn);
if (config_get_array(conf, key, tmp, sizeof(tmp)))
{
btn = tmp;
if (strcmp(btn, "nul") == 0)
bind->joykey = NO_BTN;
else
{
if (*btn == 'h')
parse_hat(bind, btn + 1);
else
bind->joykey = strtoull(tmp, NULL, 0);
}
}
if (config_get_string(conf, key_label, &tmp_a))
strlcpy(bind->joykey_label, tmp_a, sizeof(bind->joykey_label));
}
void input_config_parse_joy_axis(config_file_t *conf, const char *prefix,
const char *axis, struct retro_keybind *bind)
{
char tmp[64], key[64], key_label[64];
char *tmp_a = NULL;
snprintf(key, sizeof(key), "%s_%s_axis", prefix, axis);
snprintf(key_label, sizeof(key_label), "%s_%s_axis_label", prefix, axis);
if (config_get_array(conf, key, tmp, sizeof(tmp)))
{
if (strcmp(tmp, "nul") == 0)
bind->joyaxis = AXIS_NONE;
else if (strlen(tmp) >= 2 && (*tmp == '+' || *tmp == '-'))
{
int i_axis = strtol(tmp + 1, NULL, 0);
if (*tmp == '+')
bind->joyaxis = AXIS_POS(i_axis);
else
bind->joyaxis = AXIS_NEG(i_axis);
}
/* Ensure that D-pad emulation doesn't screw this over. */
bind->orig_joyaxis = bind->joyaxis;
}
if (config_get_string(conf, key_label, &tmp_a))
strlcpy(bind->joyaxis_label, tmp_a, sizeof(bind->joyaxis_label));
}
#if !defined(IS_JOYCONFIG)
static void input_get_bind_string_joykey(char *buf, const char *prefix,
const struct retro_keybind *bind, size_t size)
{
if (GET_HAT_DIR(bind->joykey))
{
const char *dir;
switch (GET_HAT_DIR(bind->joykey))
{
case HAT_UP_MASK:
dir = "up";
break;
case HAT_DOWN_MASK:
dir = "down";
break;
case HAT_LEFT_MASK:
dir = "left";
break;
case HAT_RIGHT_MASK:
dir = "right";
break;
default:
dir = "?";
break;
}
if (bind->joykey_label[0] != '\0' && g_settings.input.autoconfig_descriptor_label_show)
snprintf(buf, size, "%s %s ", prefix, bind->joykey_label);
else
snprintf(buf, size, "%sHat #%u %s ", prefix,
(unsigned)GET_HAT(bind->joykey), dir);
}
else
{
if (bind->joykey_label[0] != '\0' && g_settings.input.autoconfig_descriptor_label_show)
snprintf(buf, size, "%s%s (btn) ", prefix, bind->joykey_label);
else
snprintf(buf, size, "%s%u (btn) ", prefix, (unsigned)bind->joykey);
}
}
static void input_get_bind_string_joyaxis(char *buf, const char *prefix,
const struct retro_keybind *bind, size_t size)
{
unsigned axis = 0;
char dir = '\0';
if (AXIS_NEG_GET(bind->joyaxis) != AXIS_DIR_NONE)
{
dir = '-';
axis = AXIS_NEG_GET(bind->joyaxis);
}
else if (AXIS_POS_GET(bind->joyaxis) != AXIS_DIR_NONE)
{
dir = '+';
axis = AXIS_POS_GET(bind->joyaxis);
}
if (bind->joyaxis_label[0] != '\0' && g_settings.input.autoconfig_descriptor_label_show)
snprintf(buf, size, "%s%s (axis) ", prefix, bind->joyaxis_label);
else
snprintf(buf, size, "%s%c%u (axis) ", prefix, dir, axis);
}
void input_get_bind_string(char *buf, const struct retro_keybind *bind,
const struct retro_keybind *auto_bind, size_t size)
{
char key[64], keybuf[64];
(void)key;
(void)keybuf;
*buf = '\0';
if (bind->joykey != NO_BTN)
input_get_bind_string_joykey(buf, "", bind, size);
else if (bind->joyaxis != AXIS_NONE)
input_get_bind_string_joyaxis(buf, "", bind, size);
else if (auto_bind && auto_bind->joykey != NO_BTN)
input_get_bind_string_joykey(buf, "Auto: ", auto_bind, size);
else if (auto_bind && auto_bind->joyaxis != AXIS_NONE)
input_get_bind_string_joyaxis(buf, "Auto: ", auto_bind, size);
#ifndef RARCH_CONSOLE
input_keymaps_translate_rk_to_str(bind->key, key, sizeof(key));
if (!strcmp(key, "nul"))
*key = '\0';
snprintf(keybuf, sizeof(keybuf), "(Key: %s)", key);
strlcat(buf, keybuf, size);
#endif
}
#endif
/**
* input_push_analog_dpad:
* @binds : Binds to modify.
* @mode : Which analog stick to bind D-Pad to.
* E.g:
* ANALOG_DPAD_LSTICK
* ANALOG_DPAD_RSTICK
*
* Push analog to D-Pad mappings to binds.
**/
void input_push_analog_dpad(struct retro_keybind *binds, unsigned mode)
{
unsigned i, j;
for (i = RETRO_DEVICE_ID_JOYPAD_UP; i <= RETRO_DEVICE_ID_JOYPAD_RIGHT; i++)
binds[i].orig_joyaxis = binds[i].joyaxis;
switch (mode)
{
case ANALOG_DPAD_LSTICK:
j = RARCH_ANALOG_LEFT_X_PLUS + 3;
/* Inherit joyaxis from analogs. */
for (i = RETRO_DEVICE_ID_JOYPAD_UP; i <= RETRO_DEVICE_ID_JOYPAD_RIGHT; i++)
binds[i].joyaxis = binds[j--].joyaxis;
break;
case ANALOG_DPAD_RSTICK:
j = RARCH_ANALOG_RIGHT_X_PLUS + 3;
/* Inherit joyaxis from analogs. */
for (i = RETRO_DEVICE_ID_JOYPAD_UP; i <= RETRO_DEVICE_ID_JOYPAD_RIGHT; i++)
binds[i].joyaxis = binds[j--].joyaxis;
break;
}
}
/**
* input_pop_analog_dpad:
* @binds : Binds to modify.
*
* Restores binds temporarily overridden by input_push_analog_dpad().
**/
void input_pop_analog_dpad(struct retro_keybind *binds)
{
unsigned i;
for (i = RETRO_DEVICE_ID_JOYPAD_UP; i <= RETRO_DEVICE_ID_JOYPAD_RIGHT; i++)
binds[i].joyaxis = binds[i].orig_joyaxis;
}
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