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annotate controller_info.c @ 1603:c0727712d529

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Read extral SDL2 mappings on startup from controller_types.cfg
author Michael Pavone <pavone@retrodev.com>
date Tue, 31 Jul 2018 23:08:52 -0700
parents 7f39c40b4b25
children 68b05322d971
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rev   line source
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1 #include <string.h>
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2 #include "render_sdl.h"
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3 #include "controller_info.h"
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4 #include "config.h"
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5
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6 typedef struct {
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7 char const *name;
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8 controller_info info;
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9 } heuristic;
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10
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11 static heuristic heuristics[] = {
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12 //TODO: Add more heuristic rules
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13 {"DualShock 4", {.type = TYPE_PSX, .subtype = SUBTYPE_PS4}},
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14 {"PS4", {.type = TYPE_PSX, .subtype = SUBTYPE_PS4}},
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15 {"PS3", {.type = TYPE_PSX, .subtype = SUBTYPE_PS3}},
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16 {"X360", {.type = TYPE_XBOX, .subtype = SUBTYPE_X360}},
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17 {"Xbox 360", {.type = TYPE_XBOX, .subtype = SUBTYPE_X360}},
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18 {"X-box 360", {.type = TYPE_XBOX, .subtype = SUBTYPE_X360}},
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19 {"Xbox One", {.type = TYPE_XBOX, .subtype = SUBTYPE_XBONE}},
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20 {"X-box One", {.type = TYPE_XBOX, .subtype = SUBTYPE_XBONE}},
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21 {"WiiU", {.type = TYPE_NINTENDO, .subtype = SUBTYPE_WIIU}},
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22 {"Wii U", {.type = TYPE_NINTENDO, .subtype = SUBTYPE_WIIU}},
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23 {"Nintendo Switch", {.type = TYPE_NINTENDO, .subtype = SUBTYPE_SWITCH}},
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24 {"Saturn", {.type = TYPE_SEGA, .subtype = SUBTYPE_SATURN}}
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25 };
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26 const uint32_t num_heuristics = sizeof(heuristics)/sizeof(*heuristics);
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27
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28 static tern_node *info_config;
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29 static uint8_t loaded;
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30 static const char *subtype_names[] = {
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31 "unknown",
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32 "xbox",
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33 "xbox 360",
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34 "xbone",
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35 "ps2",
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36 "ps3",
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37 "ps4",
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38 "wiiu",
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39 "switch",
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40 "genesis",
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41 "saturn"
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42 };
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43 static const char *variant_names[] = {
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44 "normal",
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45 "6b bumpers",
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46 "6b right"
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47 };
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48
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49 static void load_ctype_config(void)
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50 {
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51 if (!loaded) {
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52 info_config = load_overrideable_config("controller_types.cfg", "controller_types.cfg");
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53 loaded = 1;
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54 }
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55 }
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56
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57 controller_info get_controller_info(int joystick)
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58 {
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59 load_ctype_config();
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60 char guid_string[33];
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61 SDL_Joystick *stick = render_get_joystick(joystick);
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62 SDL_GameController *control = render_get_controller(joystick);
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63 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(stick), guid_string, sizeof(guid_string));
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64 tern_node *info = tern_find_node(info_config, guid_string);
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65 if (info) {
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66 controller_info res;
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67 char *subtype = tern_find_ptr(info, "subtype");
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68 res.subtype = SUBTYPE_UNKNOWN;
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69 if (subtype) {
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70 for (int i = 0; i < SUBTYPE_NUM; i++)
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71 {
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72 if (!strcmp(subtype_names[i], subtype)) {
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73 res.subtype = i;
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74 break;
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75 }
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76 }
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77 }
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78 switch (res.subtype)
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79 {
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80 case SUBTYPE_XBOX:
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81 case SUBTYPE_X360:
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82 case SUBTYPE_XBONE:
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83 res.type = TYPE_XBOX;
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84 break;
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85 case SUBTYPE_PS2:
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86 case SUBTYPE_PS3:
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87 case SUBTYPE_PS4:
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88 res.type = TYPE_PSX;
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89 break;
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90 case SUBTYPE_WIIU:
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91 case SUBTYPE_SWITCH:
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92 res.type = TYPE_NINTENDO;
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93 break;
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94 case SUBTYPE_GENESIS:
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95 case SUBTYPE_SATURN:
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96 res.type = TYPE_SEGA;
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97 break;
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98 default:
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99 res.type = TYPE_UNKNOWN;
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100 break;
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101 }
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102 char *variant = tern_find_ptr(info, "variant");
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103 res.variant = VARIANT_NORMAL;
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104 if (variant) {
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105 for (int i = 0; i < VARIANT_NUM; i++)
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106 {
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107 if (!strcmp(variant_names[i], variant)) {
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108 res.variant = i;
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109 break;
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110 }
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111 }
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112 }
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113 res.name = control ? SDL_GameControllerName(control) : SDL_JoystickName(stick);
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114 if (control) {
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115 SDL_GameControllerClose(control);
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116 }
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117 return res;
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118 }
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119 if (!control) {
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120 return (controller_info) {
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121 .type = TYPE_UNKNOWN,
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122 .subtype = SUBTYPE_UNKNOWN,
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123 .variant = VARIANT_NORMAL,
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124 .name = SDL_JoystickName(stick)
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125 };
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126 }
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127 const char *name = SDL_GameControllerName(control);
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128 SDL_GameControllerClose(control);
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129 for (uint32_t i = 0; i < num_heuristics; i++)
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130 {
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131 if (strstr(name, heuristics[i].name)) {
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132 controller_info res = heuristics[i].info;
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133 res.name = name;
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134 return res;
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135 }
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136 }
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137 //default to a 360
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138 return (controller_info){
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139 .type = TYPE_GENERIC_MAPPING,
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140 .subtype = SUBTYPE_UNKNOWN,
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141 .variant = VARIANT_NORMAL,
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142 .name = name
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143 };
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144 }
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145
1603
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146 static void mappings_iter(char *key, tern_val val, uint8_t valtype, void *data)
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147 {
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148 if (valtype != TVAL_NODE) {
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149 return;
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150 }
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151 char *mapping = tern_find_ptr(val.ptrval, "mapping");
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152 if (mapping) {
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153 SDL_GameControllerAddMapping(mapping);
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154 }
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155 }
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156
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157 void controller_add_mappings(void)
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158 {
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159 load_ctype_config();
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160 tern_foreach(info_config, mappings_iter, NULL);
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161 }
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162
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163 void save_controller_info(int joystick, controller_info *info)
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164 {
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165 char guid_string[33];
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166 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(render_get_joystick(joystick)), guid_string, sizeof(guid_string));
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167 tern_node *existing = tern_find_node(info_config, guid_string);
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168 existing = tern_insert_ptr(existing, "subtype", (void *)subtype_names[info->subtype]);
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169 existing = tern_insert_ptr(existing, "variant", (void *)variant_names[info->variant]);
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170 info_config = tern_insert_node(info_config, guid_string, existing);
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171 persist_config_at(info_config, "controller_types.cfg");
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172
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173 }
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174
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175 void save_controller_mapping(int joystick, char *mapping_string)
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176 {
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177 char guid_string[33];
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178 SDL_JoystickGetGUIDString(SDL_JoystickGetGUID(render_get_joystick(joystick)), guid_string, sizeof(guid_string));
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179 tern_node *existing = tern_find_node(info_config, guid_string);
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180 existing = tern_insert_ptr(existing, "mapping", mapping_string);
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181 info_config = tern_insert_node(info_config, guid_string, existing);
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182 persist_config_at(info_config, "controller_types.cfg");
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183 }
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184
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185 char const *labels_xbox[] = {
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186 "A", "B", "X", "Y", "Back", NULL, "Start", "Click", "Click", "White", "Black", "LT", "RT"
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187 };
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188 char const *labels_360[] = {
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189 "A", "B", "X", "Y", "Back", "Xbox", "Start", "Click", "Click", "LB", "RB", "LT", "RT"
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190 };
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191 static char const *labels_xbone[] = {
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192 "A", "B", "X", "Y", "View", "Xbox", "Menu", "Click", "Click", "LB", "RB", "LT", "RT"
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193 };
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194 static char const *labels_ps3[] = {
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195 "cross", "circle", "square", "triangle", "Select", "PS", "Start", "L3", "R3", "L1", "R1", "L2", "R2"
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196 };
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197 static char const *labels_ps4[] = {
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198 "cross", "circle", "square", "triangle", "Share", "PS", "Options", "L3", "R3", "L1", "R1", "L2", "R2"
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199 };
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200 static char const *labels_nintendo[] = {
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201 "B", "A", "Y", "X", "-", "Home", "+", "Click", "Click", "L", "R", "ZL", "ZR"
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202 };
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203 static char const *labels_genesis[] = {
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204 "A", "B", "X", "Y", NULL, NULL, "Start", NULL, NULL, "Z", "C", NULL, "Mode"
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205 };
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206 static char const *labels_saturn[] = {
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207 "A", "B", "X", "Y", NULL, NULL, "Start", NULL, NULL, "Z", "C", "LT", "RT"
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208 };
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209
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210 static const char** label_source(controller_info *info)
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211 {
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212 if (info->type == TYPE_UNKNOWN || info->type == TYPE_GENERIC_MAPPING || info->subtype ==SUBTYPE_X360) {
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213 return labels_360;
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214 } else if (info->type == TYPE_NINTENDO) {
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215 return labels_nintendo;
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216 } else if (info->type == TYPE_PSX) {
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217 if (info->subtype == SUBTYPE_PS4) {
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218 return labels_ps4;
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219 } else {
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220 return labels_ps3;
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221 }
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222 } else if (info->type == TYPE_XBOX) {
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223 if (info->subtype == SUBTYPE_XBONE) {
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224 return labels_xbone;
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225 } else {
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226 return labels_xbox;
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227 }
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228 } else {
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229 if (info->subtype == SUBTYPE_GENESIS) {
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230 return labels_genesis;
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231 } else {
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232 return labels_saturn;
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233 }
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234 }
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235 }
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236
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237 const char *get_button_label(controller_info *info, int button)
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238 {
1597
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239 if (button >= SDL_CONTROLLER_BUTTON_DPAD_UP) {
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240 static char const * dirs[] = {"Up", "Down", "Left", "Right"};
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241 return dirs[button - SDL_CONTROLLER_BUTTON_DPAD_UP];
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242 }
1596
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243 return label_source(info)[button];
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244 }
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245
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246 static char const *axis_labels[] = {
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247 "Left X", "Left Y", "Right X", "Right Y"
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248 };
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249 const char *get_axis_label(controller_info *info, int axis)
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250 {
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251 if (axis < SDL_CONTROLLER_AXIS_TRIGGERLEFT) {
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252 return axis_labels[axis];
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253 } else {
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254 return label_source(info)[axis - SDL_CONTROLLER_AXIS_TRIGGERLEFT + SDL_CONTROLLER_BUTTON_RIGHTSHOULDER + 1];
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255 }
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256 }
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257