Mercurial > sdl-ios-xcode
annotate src/joystick/linux/SDL_sysjoystick.c @ 1752:97f20f2a1d85
SDL_sysjoystick.c:983: warning: 'return' with a value, in function returning void
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 01 May 2006 06:40:00 +0000 |
| parents | 92947e3a18db |
| children | 2f381b48b05c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
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24 #ifdef SDL_JOYSTICK_LINUX |
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25 |
| 0 | 26 /* This is the system specific header for the SDL joystick API */ |
| 27 | |
| 28 #include <sys/stat.h> | |
| 29 #include <unistd.h> | |
| 30 #include <fcntl.h> | |
| 31 #include <sys/ioctl.h> | |
| 32 #include <limits.h> /* For the definition of PATH_MAX */ | |
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33 #ifdef __arm__ |
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34 #include <linux/limits.h> /* Arm cross-compiler needs this */ |
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35 #endif |
| 0 | 36 #include <linux/joystick.h> |
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37 #if SDL_INPUT_LINUXEV |
| 0 | 38 #include <linux/input.h> |
| 39 #endif | |
| 40 | |
| 41 #include "SDL_joystick.h" | |
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42 #include "../SDL_sysjoystick.h" |
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43 #include "../SDL_joystick_c.h" |
| 0 | 44 |
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45 /* Special joystick configurations */ |
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46 static struct { |
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47 const char *name; |
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48 int naxes; |
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49 int nhats; |
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50 int nballs; |
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51 } special_joysticks[] = { |
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52 { "MadCatz Panther XL", 3, 2, 1 }, /* We don't handle rudder (axis 8) */ |
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53 { "SideWinder Precision Pro", 4, 1, 0 }, |
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54 { "SideWinder 3D Pro", 4, 1, 0 }, |
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55 { "Microsoft SideWinder 3D Pro", 4, 1, 0 }, |
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56 { "Microsoft SideWinder Dual Strike USB version 1.0", 2, 1, 0 }, |
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57 { "WingMan Interceptor", 3, 3, 0 }, |
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58 { "WingMan Extreme Digital 3D", 4, 1, 0 }, |
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59 { "Microsoft SideWinder Precision 2 Joystick", 4, 1, 0 }, |
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60 { "Logitech Inc. WingMan Extreme Digital 3D", 4, 1, 0 }, |
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61 { "Saitek Saitek X45", 6, 1, 0 } |
| 0 | 62 }; |
| 63 | |
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64 #ifndef NO_LOGICAL_JOYSTICKS |
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65 |
| 1551 | 66 /* |
| 67 Some USB HIDs show up as a single joystick even though they actually | |
| 68 control 2 or more joysticks. | |
| 69 */ | |
| 70 /* | |
| 71 This code handles the MP-8800 (Quad) and MP-8866 (Dual), which can | |
| 72 be identified by their transparent blue design. It's quite trivial | |
| 73 to add other joysticks with similar quirky behavior. | |
| 74 -id | |
| 75 */ | |
| 76 | |
| 77 struct joystick_logical_mapping { | |
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78 int njoy; |
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79 int nthing; |
| 1551 | 80 }; |
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81 |
| 1551 | 82 /* |
| 83 {logical joy, logical axis}, | |
| 84 {logical joy, logical hat}, | |
| 85 {logical joy, logical ball}, | |
| 86 {logical joy, logical button} | |
| 87 */ | |
| 88 | |
| 89 static struct joystick_logical_mapping mp88xx_1_logical_axismap[] = { | |
| 90 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5} | |
| 91 }; | |
| 92 static struct joystick_logical_mapping mp88xx_1_logical_buttonmap[] = { | |
| 93 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11} | |
| 94 }; | |
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95 |
| 1551 | 96 static struct joystick_logical_mapping mp88xx_2_logical_axismap[] = { |
| 97 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 98 {1,2},{1,3},{0,4},{0,5},{1,4},{1,5} | |
| 99 }; | |
| 100 static struct joystick_logical_mapping mp88xx_2_logical_buttonmap[] = { | |
| 101 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, | |
| 102 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11} | |
| 103 }; | |
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104 |
| 1551 | 105 static struct joystick_logical_mapping mp88xx_3_logical_axismap[] = { |
| 106 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 107 {1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, | |
| 108 {0,4},{0,5},{1,4},{1,5},{2,4},{2,5} | |
| 109 }; | |
| 110 static struct joystick_logical_mapping mp88xx_3_logical_buttonmap[] = { | |
| 111 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, | |
| 112 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11}, | |
| 113 {2,0},{2,1},{2,2},{2,3},{2,4},{2,5},{2,6},{2,7},{2,8},{2,9},{2,10},{2,11} | |
| 114 }; | |
| 115 | |
| 116 static struct joystick_logical_mapping mp88xx_4_logical_axismap[] = { | |
| 117 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 118 {1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, | |
| 119 {3,0},{3,1},{3,2},{3,3},{0,4},{0,5}, | |
| 120 {1,4},{1,5},{2,4},{2,5},{3,4},{3,5} | |
| 121 }; | |
| 122 static struct joystick_logical_mapping mp88xx_4_logical_buttonmap[] = { | |
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123 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, |
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124 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11}, |
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125 {2,0},{2,1},{2,2},{2,3},{2,4},{2,5},{2,6},{2,7},{2,8},{2,9},{2,10},{2,11}, |
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126 {3,0},{3,1},{3,2},{3,3},{3,4},{3,5},{3,6},{3,7},{3,8},{3,9},{3,10},{3,11} |
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127 }; |
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128 |
| 1551 | 129 struct joystick_logical_layout { |
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130 int naxes; |
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131 int nhats; |
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132 int nballs; |
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133 int nbuttons; |
| 1551 | 134 }; |
| 135 | |
| 136 static struct joystick_logical_layout mp88xx_1_logical_layout[] = { | |
| 137 {6, 0, 0, 12} | |
| 138 }; | |
| 139 static struct joystick_logical_layout mp88xx_2_logical_layout[] = { | |
| 140 {6, 0, 0, 12}, | |
| 141 {6, 0, 0, 12} | |
| 142 }; | |
| 143 static struct joystick_logical_layout mp88xx_3_logical_layout[] = { | |
| 144 {6, 0, 0, 12}, | |
| 145 {6, 0, 0, 12}, | |
| 146 {6, 0, 0, 12} | |
| 147 }; | |
| 148 static struct joystick_logical_layout mp88xx_4_logical_layout[] = { | |
| 149 {6, 0, 0, 12}, | |
| 150 {6, 0, 0, 12}, | |
| 151 {6, 0, 0, 12}, | |
| 152 {6, 0, 0, 12} | |
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153 }; |
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154 |
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155 /* |
| 1551 | 156 This array sets up a means of mapping a single physical joystick to |
| 157 multiple logical joysticks. (djm) | |
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158 |
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159 njoys |
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160 the number of logical joysticks |
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161 |
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162 layouts |
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163 an array of layout structures, one to describe each logical joystick |
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164 |
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165 axes, hats, balls, buttons |
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166 arrays that map a physical thingy to a logical thingy |
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167 */ |
| 1551 | 168 struct joystick_logicalmap { |
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169 const char *name; |
| 1551 | 170 int nbuttons; |
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171 int njoys; |
| 1551 | 172 struct joystick_logical_layout *layout; |
| 173 struct joystick_logical_mapping *axismap; | |
| 174 struct joystick_logical_mapping *hatmap; | |
| 175 struct joystick_logical_mapping *ballmap; | |
| 176 struct joystick_logical_mapping *buttonmap; | |
| 177 }; | |
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178 |
| 1551 | 179 static struct joystick_logicalmap joystick_logicalmap[] = { |
| 180 { | |
| 181 "WiseGroup.,Ltd MP-8866 Dual USB Joypad", | |
| 182 12, | |
| 183 1, | |
| 184 mp88xx_1_logical_layout, | |
| 185 mp88xx_1_logical_axismap, | |
| 186 NULL, | |
| 187 NULL, | |
| 188 mp88xx_1_logical_buttonmap | |
| 189 }, | |
| 190 { | |
| 191 "WiseGroup.,Ltd MP-8866 Dual USB Joypad", | |
| 192 24, | |
| 193 2, | |
| 194 mp88xx_2_logical_layout, | |
| 195 mp88xx_2_logical_axismap, | |
| 196 NULL, | |
| 197 NULL, | |
| 198 mp88xx_2_logical_buttonmap | |
| 199 }, | |
| 200 { | |
| 201 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 202 12, | |
| 203 1, | |
| 204 mp88xx_1_logical_layout, | |
| 205 mp88xx_1_logical_axismap, | |
| 206 NULL, | |
| 207 NULL, | |
| 208 mp88xx_1_logical_buttonmap | |
| 209 }, | |
| 210 { | |
| 211 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 212 24, | |
| 213 2, | |
| 214 mp88xx_2_logical_layout, | |
| 215 mp88xx_2_logical_axismap, | |
| 216 NULL, | |
| 217 NULL, | |
| 218 mp88xx_2_logical_buttonmap | |
| 219 }, | |
| 220 { | |
| 221 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 222 36, | |
| 223 3, | |
| 224 mp88xx_3_logical_layout, | |
| 225 mp88xx_3_logical_axismap, | |
| 226 NULL, | |
| 227 NULL, | |
| 228 mp88xx_3_logical_buttonmap | |
| 229 }, | |
| 230 { | |
| 231 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 232 48, | |
| 233 4, | |
| 234 mp88xx_4_logical_layout, | |
| 235 mp88xx_4_logical_axismap, | |
| 236 NULL, | |
| 237 NULL, | |
| 238 mp88xx_4_logical_buttonmap | |
| 239 } | |
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240 }; |
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241 |
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242 /* find the head of a linked list, given a point in it |
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243 */ |
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244 #define SDL_joylist_head(i, start)\ |
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245 for(i = start; SDL_joylist[i].fname == NULL;) i = SDL_joylist[i].prev; |
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246 |
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247 #define SDL_logical_joydecl(d) d |
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248 |
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249 |
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250 #else |
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251 |
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252 #define SDL_logical_joydecl(d) |
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253 |
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254 #endif /* USE_LOGICAL_JOYSTICKS */ |
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255 |
| 0 | 256 /* The maximum number of joysticks we'll detect */ |
| 257 #define MAX_JOYSTICKS 32 | |
| 258 | |
| 259 /* A list of available joysticks */ | |
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260 static struct |
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261 { |
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262 char* fname; |
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263 #ifndef NO_LOGICAL_JOYSTICKS |
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264 SDL_Joystick* joy; |
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265 struct joystick_logicalmap* map; |
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266 int prev; |
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267 int next; |
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268 int logicalno; |
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269 #endif /* USE_LOGICAL_JOYSTICKS */ |
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270 } SDL_joylist[MAX_JOYSTICKS]; |
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271 |
| 0 | 272 |
| 273 /* The private structure used to keep track of a joystick */ | |
| 274 struct joystick_hwdata { | |
| 275 int fd; | |
| 276 /* The current linux joystick driver maps hats to two axes */ | |
| 277 struct hwdata_hat { | |
| 278 int axis[2]; | |
| 279 } *hats; | |
| 280 /* The current linux joystick driver maps balls to two axes */ | |
| 281 struct hwdata_ball { | |
| 282 int axis[2]; | |
| 283 } *balls; | |
| 284 | |
| 285 /* Support for the Linux 2.4 unified input interface */ | |
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286 #if SDL_INPUT_LINUXEV |
| 0 | 287 SDL_bool is_hid; |
| 288 Uint8 key_map[KEY_MAX-BTN_MISC]; | |
| 289 Uint8 abs_map[ABS_MAX]; | |
| 290 struct axis_correct { | |
| 291 int used; | |
| 292 int coef[3]; | |
| 293 } abs_correct[ABS_MAX]; | |
| 294 #endif | |
| 295 }; | |
| 296 | |
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297 |
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298 #ifndef NO_LOGICAL_JOYSTICKS |
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299 |
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300 static int CountLogicalJoysticks(int max) |
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301 { |
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302 register int i, j, k, ret, prev; |
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303 const char* name; |
| 1551 | 304 int nbuttons, fd; |
| 305 unsigned char n; | |
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306 |
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307 ret = 0; |
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308 |
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309 for(i = 0; i < max; i++) { |
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310 name = SDL_SYS_JoystickName(i); |
| 1551 | 311 |
| 312 fd = open(SDL_joylist[i].fname, O_RDONLY, 0); | |
| 313 if ( fd >= 0 ) { | |
| 314 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { | |
| 315 nbuttons = -1; | |
| 316 } else { | |
| 317 nbuttons = n; | |
| 318 } | |
| 319 close(fd); | |
| 320 } | |
| 321 else { | |
| 322 nbuttons=-1; | |
| 323 } | |
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324 |
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325 if (name) { |
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326 for(j = 0; j < SDL_arraysize(joystick_logicalmap); j++) { |
| 1551 | 327 if (!SDL_strcmp(name, joystick_logicalmap[j].name) && (nbuttons==-1 || nbuttons==joystick_logicalmap[j].nbuttons)) { |
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328 prev = i; |
| 1551 | 329 SDL_joylist[prev].map = &(joystick_logicalmap[j]); |
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330 |
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331 for(k = 1; k < joystick_logicalmap[j].njoys; k++) { |
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332 SDL_joylist[prev].next = max + ret; |
| 1551 | 333 SDL_joylist[max+ret].prev = prev; |
| 334 | |
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335 prev = max + ret; |
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336 SDL_joylist[prev].logicalno = k; |
| 1551 | 337 SDL_joylist[prev].map = &(joystick_logicalmap[j]); |
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338 ret++; |
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339 } |
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340 |
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341 break; |
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342 } |
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343 } |
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344 } |
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345 } |
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346 |
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347 return ret; |
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348 } |
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349 |
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350 static void LogicalSuffix(int logicalno, char* namebuf, int len) |
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351 { |
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352 register int slen; |
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353 const static char suffixs[] = |
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354 "01020304050607080910111213141516171819" |
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355 "20212223242526272829303132"; |
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356 const char* suffix; |
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357 slen = SDL_strlen(namebuf); |
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358 suffix = NULL; |
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359 |
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360 if (logicalno*2<sizeof(suffixs)) |
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361 suffix = suffixs + (logicalno*2); |
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362 |
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363 if (slen + 4 < len && suffix) { |
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364 namebuf[slen++] = ' '; |
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365 namebuf[slen++] = '#'; |
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366 namebuf[slen++] = suffix[0]; |
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367 namebuf[slen++] = suffix[1]; |
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368 namebuf[slen++] = 0; |
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369 } |
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370 } |
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371 |
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372 #endif /* USE_LOGICAL_JOYSTICKS */ |
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373 |
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374 #if SDL_INPUT_LINUXEV |
| 0 | 375 #define test_bit(nr, addr) \ |
| 376 (((1UL << ((nr) & 31)) & (((const unsigned int *) addr)[(nr) >> 5])) != 0) | |
| 377 | |
| 378 static int EV_IsJoystick(int fd) | |
| 379 { | |
| 380 unsigned long evbit[40]; | |
| 381 unsigned long keybit[40]; | |
| 382 unsigned long absbit[40]; | |
| 383 | |
| 384 if ( (ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) || | |
| 385 (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || | |
| 386 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0) ) { | |
| 387 return(0); | |
| 388 } | |
| 389 if (!(test_bit(EV_KEY, evbit) && test_bit(EV_ABS, evbit) && | |
| 390 test_bit(ABS_X, absbit) && test_bit(ABS_Y, absbit) && | |
| 391 (test_bit(BTN_TRIGGER, keybit) || test_bit(BTN_A, keybit) || test_bit(BTN_1, keybit)))) return 0; | |
| 392 return(1); | |
| 393 } | |
| 394 | |
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395 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 396 |
| 397 /* Function to scan the system for joysticks */ | |
| 398 int SDL_SYS_JoystickInit(void) | |
| 399 { | |
| 400 /* The base path of the joystick devices */ | |
|
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401 const char *joydev_pattern[] = { |
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402 #if SDL_INPUT_LINUXEV |
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403 "/dev/input/event%d", |
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404 #endif |
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405 "/dev/input/js%d", |
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406 "/dev/js%d" |
| 0 | 407 }; |
| 408 int numjoysticks; | |
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409 int i, j; |
| 0 | 410 int fd; |
| 411 char path[PATH_MAX]; | |
| 412 dev_t dev_nums[MAX_JOYSTICKS]; /* major/minor device numbers */ | |
| 413 struct stat sb; | |
| 414 int n, duplicate; | |
| 415 | |
| 416 numjoysticks = 0; | |
| 417 | |
| 418 /* First see if the user specified a joystick to use */ | |
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419 if ( SDL_getenv("SDL_JOYSTICK_DEVICE") != NULL ) { |
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420 SDL_strlcpy(path, SDL_getenv("SDL_JOYSTICK_DEVICE"), sizeof(path)); |
| 0 | 421 if ( stat(path, &sb) == 0 ) { |
| 422 fd = open(path, O_RDONLY, 0); | |
| 423 if ( fd >= 0 ) { | |
| 424 /* Assume the user knows what they're doing. */ | |
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425 SDL_joylist[numjoysticks].fname = SDL_strdup(path); |
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426 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 427 dev_nums[numjoysticks] = sb.st_rdev; |
| 428 ++numjoysticks; | |
| 429 } | |
| 430 close(fd); | |
| 431 } | |
| 432 } | |
| 433 } | |
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434 |
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435 for ( i=0; i<SDL_arraysize(joydev_pattern); ++i ) { |
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436 for ( j=0; j < MAX_JOYSTICKS; ++j ) { |
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437 SDL_snprintf(path, SDL_arraysize(path), joydev_pattern[i], j); |
| 0 | 438 |
| 439 /* rcg06302000 replaced access(F_OK) call with stat(). | |
| 440 * stat() will fail if the file doesn't exist, so it's | |
| 441 * equivalent behaviour. | |
| 442 */ | |
| 443 if ( stat(path, &sb) == 0 ) { | |
| 444 /* Check to make sure it's not already in list. | |
| 445 * This happens when we see a stick via symlink. | |
| 446 */ | |
| 447 duplicate = 0; | |
| 448 for (n=0; (n<numjoysticks) && !duplicate; ++n) { | |
| 449 if ( sb.st_rdev == dev_nums[n] ) { | |
| 450 duplicate = 1; | |
| 451 } | |
| 452 } | |
| 453 if (duplicate) { | |
| 454 continue; | |
| 455 } | |
| 456 | |
| 457 fd = open(path, O_RDONLY, 0); | |
| 458 if ( fd < 0 ) { | |
| 459 continue; | |
| 460 } | |
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461 #if SDL_INPUT_LINUXEV |
| 0 | 462 #ifdef DEBUG_INPUT_EVENTS |
| 463 printf("Checking %s\n", path); | |
| 464 #endif | |
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465 if ( (i == 0) && ! EV_IsJoystick(fd) ) { |
| 0 | 466 close(fd); |
| 467 continue; | |
| 468 } | |
| 469 #endif | |
| 470 close(fd); | |
| 471 | |
| 472 /* We're fine, add this joystick */ | |
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473 SDL_joylist[numjoysticks].fname = SDL_strdup(path); |
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474 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 475 dev_nums[numjoysticks] = sb.st_rdev; |
| 476 ++numjoysticks; | |
| 477 } | |
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478 } else |
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479 break; |
| 0 | 480 } |
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481 |
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482 #if SDL_INPUT_LINUXEV |
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483 /* This is a special case... |
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484 If the event devices are valid then the joystick devices |
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485 will be duplicates but without extra information about their |
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486 hats or balls. Unfortunately, the event devices can't |
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487 currently be calibrated, so it's a win-lose situation. |
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488 So : /dev/input/eventX = /dev/input/jsY = /dev/jsY |
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489 */ |
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490 if ( (i == 0) && (numjoysticks > 0) ) |
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491 break; |
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492 #endif |
| 0 | 493 } |
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494 #ifndef NO_LOGICAL_JOYSTICKS |
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495 numjoysticks += CountLogicalJoysticks(numjoysticks); |
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496 #endif |
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497 |
| 0 | 498 return(numjoysticks); |
| 499 } | |
| 500 | |
| 501 /* Function to get the device-dependent name of a joystick */ | |
| 502 const char *SDL_SYS_JoystickName(int index) | |
| 503 { | |
| 504 int fd; | |
| 505 static char namebuf[128]; | |
| 506 char *name; | |
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507 SDL_logical_joydecl(int oindex = index); |
| 0 | 508 |
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509 #ifndef NO_LOGICAL_JOYSTICKS |
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510 SDL_joylist_head(index, index); |
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511 #endif |
| 0 | 512 name = NULL; |
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513 fd = open(SDL_joylist[index].fname, O_RDONLY, 0); |
| 0 | 514 if ( fd >= 0 ) { |
| 515 if ( | |
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516 #if SDL_INPUT_LINUXEV |
| 0 | 517 (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) && |
| 518 #endif | |
| 519 (ioctl(fd, JSIOCGNAME(sizeof(namebuf)), namebuf) <= 0) ) { | |
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520 name = SDL_joylist[index].fname; |
| 0 | 521 } else { |
| 522 name = namebuf; | |
| 523 } | |
| 524 close(fd); | |
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525 |
| 1551 | 526 |
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527 #ifndef NO_LOGICAL_JOYSTICKS |
| 1551 | 528 if (SDL_joylist[oindex].prev || SDL_joylist[oindex].next || index!=oindex) |
| 529 { | |
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530 LogicalSuffix(SDL_joylist[oindex].logicalno, namebuf, 128); |
| 1551 | 531 } |
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532 #endif |
| 0 | 533 } |
| 534 return name; | |
| 535 } | |
| 536 | |
| 537 static int allocate_hatdata(SDL_Joystick *joystick) | |
| 538 { | |
| 539 int i; | |
| 540 | |
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541 joystick->hwdata->hats = (struct hwdata_hat *)SDL_malloc( |
| 0 | 542 joystick->nhats * sizeof(struct hwdata_hat)); |
| 543 if ( joystick->hwdata->hats == NULL ) { | |
| 544 return(-1); | |
| 545 } | |
| 546 for ( i=0; i<joystick->nhats; ++i ) { | |
| 547 joystick->hwdata->hats[i].axis[0] = 1; | |
| 548 joystick->hwdata->hats[i].axis[1] = 1; | |
| 549 } | |
| 550 return(0); | |
| 551 } | |
| 552 | |
| 553 static int allocate_balldata(SDL_Joystick *joystick) | |
| 554 { | |
| 555 int i; | |
| 556 | |
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557 joystick->hwdata->balls = (struct hwdata_ball *)SDL_malloc( |
| 0 | 558 joystick->nballs * sizeof(struct hwdata_ball)); |
| 559 if ( joystick->hwdata->balls == NULL ) { | |
| 560 return(-1); | |
| 561 } | |
| 562 for ( i=0; i<joystick->nballs; ++i ) { | |
| 563 joystick->hwdata->balls[i].axis[0] = 0; | |
| 564 joystick->hwdata->balls[i].axis[1] = 0; | |
| 565 } | |
| 566 return(0); | |
| 567 } | |
| 568 | |
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569 static SDL_bool JS_ConfigJoystick(SDL_Joystick *joystick, int fd) |
| 0 | 570 { |
| 571 SDL_bool handled; | |
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572 unsigned char n; |
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573 int old_axes, tmp_naxes, tmp_nhats, tmp_nballs; |
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574 const char *name; |
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575 char *env, env_name[128]; |
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576 int i; |
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577 |
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578 handled = SDL_FALSE; |
| 0 | 579 |
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580 /* Default joystick device settings */ |
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581 if ( ioctl(fd, JSIOCGAXES, &n) < 0 ) { |
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582 joystick->naxes = 2; |
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583 } else { |
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584 joystick->naxes = n; |
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585 } |
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586 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { |
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587 joystick->nbuttons = 2; |
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588 } else { |
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589 joystick->nbuttons = n; |
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590 } |
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591 |
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592 name = SDL_SYS_JoystickName(joystick->index); |
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593 old_axes = joystick->naxes; |
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594 |
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595 /* Generic analog joystick support */ |
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596 if ( SDL_strstr(name, "Analog") == name && SDL_strstr(name, "-hat") ) { |
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597 if ( SDL_sscanf(name,"Analog %d-axis %*d-button %d-hat", |
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598 &tmp_naxes, &tmp_nhats) == 2 ) { |
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599 |
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600 joystick->naxes = tmp_naxes; |
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601 joystick->nhats = tmp_nhats; |
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602 |
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603 handled = SDL_TRUE; |
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604 } |
| 0 | 605 } |
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606 |
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607 /* Special joystick support */ |
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608 for ( i=0; i < SDL_arraysize(special_joysticks); ++i ) { |
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609 if ( SDL_strcmp(name, special_joysticks[i].name) == 0 ) { |
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610 |
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611 joystick->naxes = special_joysticks[i].naxes; |
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612 joystick->nhats = special_joysticks[i].nhats; |
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613 joystick->nballs = special_joysticks[i].nballs; |
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614 |
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615 handled = SDL_TRUE; |
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616 break; |
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617 } |
| 0 | 618 } |
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619 |
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620 /* User environment joystick support */ |
|
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621 if ( (env = SDL_getenv("SDL_LINUX_JOYSTICK")) ) { |
|
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622 *env_name = '\0'; |
|
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623 if ( *env == '\'' && SDL_sscanf(env, "'%[^']s'", env_name) == 1 ) |
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624 env += SDL_strlen(env_name)+2; |
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625 else if ( SDL_sscanf(env, "%s", env_name) == 1 ) |
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626 env += SDL_strlen(env_name); |
|
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627 |
|
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628 if ( SDL_strcmp(name, env_name) == 0 ) { |
| 0 | 629 |
|
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630 if ( SDL_sscanf(env, "%d %d %d", &tmp_naxes, &tmp_nhats, |
|
554
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631 &tmp_nballs) == 3 ) { |
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632 |
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633 joystick->naxes = tmp_naxes; |
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634 joystick->nhats = tmp_nhats; |
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635 joystick->nballs = tmp_nballs; |
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636 |
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637 handled = SDL_TRUE; |
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638 } |
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639 } |
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640 } |
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641 |
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642 /* Remap hats and balls */ |
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643 if (handled) { |
| 0 | 644 if ( joystick->nhats > 0 ) { |
|
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645 if ( allocate_hatdata(joystick) < 0 ) { |
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646 joystick->nhats = 0; |
| 0 | 647 } |
| 648 } | |
| 649 if ( joystick->nballs > 0 ) { | |
| 650 if ( allocate_balldata(joystick) < 0 ) { | |
| 651 joystick->nballs = 0; | |
| 652 } | |
| 653 } | |
| 654 } | |
|
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655 |
| 0 | 656 return(handled); |
| 657 } | |
| 658 | |
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659 #if SDL_INPUT_LINUXEV |
| 0 | 660 |
| 661 static SDL_bool EV_ConfigJoystick(SDL_Joystick *joystick, int fd) | |
| 662 { | |
| 871 | 663 int i, t; |
| 0 | 664 unsigned long keybit[40]; |
| 665 unsigned long absbit[40]; | |
| 666 unsigned long relbit[40]; | |
| 667 | |
| 668 /* See if this device uses the new unified event API */ | |
| 669 if ( (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) >= 0) && | |
| 670 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) >= 0) && | |
| 671 (ioctl(fd, EVIOCGBIT(EV_REL, sizeof(relbit)), relbit) >= 0) ) { | |
| 672 joystick->hwdata->is_hid = SDL_TRUE; | |
| 673 | |
| 674 /* Get the number of buttons, axes, and other thingamajigs */ | |
| 675 for ( i=BTN_JOYSTICK; i < KEY_MAX; ++i ) { | |
| 676 if ( test_bit(i, keybit) ) { | |
| 677 #ifdef DEBUG_INPUT_EVENTS | |
| 678 printf("Joystick has button: 0x%x\n", i); | |
| 679 #endif | |
| 680 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 681 joystick->nbuttons; | |
| 682 ++joystick->nbuttons; | |
| 683 } | |
| 684 } | |
| 685 for ( i=BTN_MISC; i < BTN_JOYSTICK; ++i ) { | |
| 686 if ( test_bit(i, keybit) ) { | |
| 687 #ifdef DEBUG_INPUT_EVENTS | |
| 688 printf("Joystick has button: 0x%x\n", i); | |
| 689 #endif | |
| 690 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 691 joystick->nbuttons; | |
| 692 ++joystick->nbuttons; | |
| 693 } | |
| 694 } | |
| 695 for ( i=0; i<ABS_MAX; ++i ) { | |
| 696 /* Skip hats */ | |
| 697 if ( i == ABS_HAT0X ) { | |
| 698 i = ABS_HAT3Y; | |
| 699 continue; | |
| 700 } | |
| 701 if ( test_bit(i, absbit) ) { | |
| 702 int values[5]; | |
| 703 | |
|
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704 if ( ioctl(fd, EVIOCGABS(i), values) < 0 ) |
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705 continue; |
| 0 | 706 #ifdef DEBUG_INPUT_EVENTS |
| 707 printf("Joystick has absolute axis: %x\n", i); | |
| 708 printf("Values = { %d, %d, %d, %d, %d }\n", | |
| 709 values[0], values[1], | |
| 710 values[2], values[3], values[4]); | |
| 711 #endif /* DEBUG_INPUT_EVENTS */ | |
| 712 joystick->hwdata->abs_map[i] = joystick->naxes; | |
| 713 if ( values[1] == values[2] ) { | |
| 714 joystick->hwdata->abs_correct[i].used = 0; | |
| 715 } else { | |
| 716 joystick->hwdata->abs_correct[i].used = 1; | |
|
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717 joystick->hwdata->abs_correct[i].coef[0] = |
|
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718 (values[2] + values[1]) / 2 - values[4]; |
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719 joystick->hwdata->abs_correct[i].coef[1] = |
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720 (values[2] + values[1]) / 2 + values[4]; |
| 871 | 721 t = ((values[2] - values[1]) / 2 - 2 * values[4]); |
| 722 if ( t != 0 ) { | |
| 723 joystick->hwdata->abs_correct[i].coef[2] = (1 << 29) / t; | |
|
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724 } else { |
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725 joystick->hwdata->abs_correct[i].coef[2] = 0; |
| 871 | 726 } |
| 0 | 727 } |
| 728 ++joystick->naxes; | |
| 729 } | |
| 730 } | |
| 731 for ( i=ABS_HAT0X; i <= ABS_HAT3Y; i += 2 ) { | |
| 732 if ( test_bit(i, absbit) || test_bit(i+1, absbit) ) { | |
| 733 #ifdef DEBUG_INPUT_EVENTS | |
| 734 printf("Joystick has hat %d\n",(i-ABS_HAT0X)/2); | |
| 735 #endif | |
| 736 ++joystick->nhats; | |
| 737 } | |
| 738 } | |
| 739 if ( test_bit(REL_X, relbit) || test_bit(REL_Y, relbit) ) { | |
| 740 ++joystick->nballs; | |
| 741 } | |
| 742 | |
| 743 /* Allocate data to keep track of these thingamajigs */ | |
| 744 if ( joystick->nhats > 0 ) { | |
| 745 if ( allocate_hatdata(joystick) < 0 ) { | |
| 746 joystick->nhats = 0; | |
| 747 } | |
| 748 } | |
| 749 if ( joystick->nballs > 0 ) { | |
| 750 if ( allocate_balldata(joystick) < 0 ) { | |
| 751 joystick->nballs = 0; | |
| 752 } | |
| 753 } | |
| 754 } | |
| 755 return(joystick->hwdata->is_hid); | |
| 756 } | |
| 757 | |
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758 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 759 |
|
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760 #ifndef NO_LOGICAL_JOYSTICKS |
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761 static void ConfigLogicalJoystick(SDL_Joystick *joystick) |
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762 { |
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763 struct joystick_logical_layout* layout; |
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764 |
| 1551 | 765 layout = SDL_joylist[joystick->index].map->layout + |
|
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766 SDL_joylist[joystick->index].logicalno; |
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767 |
|
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768 joystick->nbuttons = layout->nbuttons; |
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769 joystick->nhats = layout->nhats; |
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770 joystick->naxes = layout->naxes; |
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771 joystick->nballs = layout->nballs; |
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772 } |
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773 #endif |
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774 |
|
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775 |
| 0 | 776 /* Function to open a joystick for use. |
| 777 The joystick to open is specified by the index field of the joystick. | |
| 778 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 779 It returns 0, or -1 if there is an error. | |
| 780 */ | |
| 781 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 782 { | |
| 783 int fd; | |
|
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|
784 SDL_logical_joydecl(int realindex); |
|
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785 SDL_logical_joydecl(SDL_Joystick *realjoy = NULL); |
| 0 | 786 |
| 787 /* Open the joystick and set the joystick file descriptor */ | |
|
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|
788 #ifndef NO_LOGICAL_JOYSTICKS |
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789 if (SDL_joylist[joystick->index].fname == NULL) { |
|
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790 SDL_joylist_head(realindex, joystick->index); |
|
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791 realjoy = SDL_JoystickOpen(realindex); |
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|
792 |
|
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793 if (realjoy == NULL) |
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dc29e5907694
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794 return(-1); |
|
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|
795 |
|
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796 fd = realjoy->hwdata->fd; |
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797 |
|
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798 } else { |
|
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799 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
|
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800 } |
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801 SDL_joylist[joystick->index].joy = joystick; |
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802 #else |
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803 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
|
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804 #endif |
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|
805 |
| 0 | 806 if ( fd < 0 ) { |
| 807 SDL_SetError("Unable to open %s\n", | |
| 808 SDL_joylist[joystick->index]); | |
| 809 return(-1); | |
| 810 } | |
| 811 joystick->hwdata = (struct joystick_hwdata *) | |
|
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812 SDL_malloc(sizeof(*joystick->hwdata)); |
| 0 | 813 if ( joystick->hwdata == NULL ) { |
| 814 SDL_OutOfMemory(); | |
| 815 close(fd); | |
| 816 return(-1); | |
| 817 } | |
|
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|
818 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
| 0 | 819 joystick->hwdata->fd = fd; |
| 820 | |
| 821 /* Set the joystick to non-blocking read mode */ | |
| 822 fcntl(fd, F_SETFL, O_NONBLOCK); | |
| 823 | |
| 824 /* Get the number of buttons and axes on the joystick */ | |
|
892
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825 #ifndef NO_LOGICAL_JOYSTICKS |
|
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|
826 if (realjoy) |
|
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|
827 ConfigLogicalJoystick(joystick); |
|
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828 else |
|
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829 #endif |
|
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|
830 #if SDL_INPUT_LINUXEV |
| 0 | 831 if ( ! EV_ConfigJoystick(joystick, fd) ) |
| 832 #endif | |
|
554
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Sam Lantinga <slouken@libsdl.org>
parents:
408
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changeset
|
833 JS_ConfigJoystick(joystick, fd); |
|
38b1a98aeb11
Linux joystick cleanups from Alan Swanson
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|
834 |
| 0 | 835 return(0); |
| 836 } | |
| 837 | |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
838 #ifndef NO_LOGICAL_JOYSTICKS |
|
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Sam Lantinga <slouken@libsdl.org>
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|
839 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
840 static SDL_Joystick* FindLogicalJoystick( |
| 1551 | 841 SDL_Joystick *joystick, struct joystick_logical_mapping* v) |
|
892
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|
842 { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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changeset
|
843 SDL_Joystick *logicaljoy; |
|
dc29e5907694
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parents:
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diff
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|
844 register int i; |
|
dc29e5907694
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
845 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
846 i = joystick->index; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
847 logicaljoy = NULL; |
|
dc29e5907694
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parents:
872
diff
changeset
|
848 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
changeset
|
849 /* get the fake joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
850 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
851 for(;;) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
852 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
853 if (SDL_joylist[i].logicalno == v->njoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
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|
854 logicaljoy = SDL_joylist[i].joy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
855 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
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|
856 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
857 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
858 if (SDL_joylist[i].next == 0) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
859 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
860 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
861 i = SDL_joylist[i].next; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
862 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
863 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
864 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
865 return logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
866 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
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|
867 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
868 static int LogicalJoystickButton( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
869 SDL_Joystick *joystick, Uint8 button, Uint8 state){ |
| 1551 | 870 struct joystick_logical_mapping* buttons; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
871 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
872 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
873 /* if there's no map then this is just a regular joystick |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
874 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
875 if (SDL_joylist[joystick->index].map == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
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|
876 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
changeset
|
877 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
878 /* get the logical joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
879 */ |
| 1551 | 880 buttons = SDL_joylist[joystick->index].map->buttonmap+button; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
881 logicaljoy = FindLogicalJoystick(joystick, buttons); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
882 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
883 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
884 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
885 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
886 SDL_PrivateJoystickButton(logicaljoy, buttons->nthing, state); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
887 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
888 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
889 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
890 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
891 static int LogicalJoystickAxis( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
892 SDL_Joystick *joystick, Uint8 axis, Sint16 value) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
893 { |
| 1551 | 894 struct joystick_logical_mapping* axes; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
895 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
896 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
897 /* if there's no map then this is just a regular joystick |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
898 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
899 if (SDL_joylist[joystick->index].map == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
changeset
|
900 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
901 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
902 /* get the logical joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
903 */ |
| 1551 | 904 axes = SDL_joylist[joystick->index].map->axismap+axis; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
905 logicaljoy = FindLogicalJoystick(joystick, axes); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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872
diff
changeset
|
906 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
907 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
908 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
909 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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872
diff
changeset
|
910 SDL_PrivateJoystickAxis(logicaljoy, axes->nthing, value); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
911 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
912 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
913 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
914 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
915 |
| 0 | 916 static __inline__ |
| 917 void HandleHat(SDL_Joystick *stick, Uint8 hat, int axis, int value) | |
| 918 { | |
| 919 struct hwdata_hat *the_hat; | |
| 920 const Uint8 position_map[3][3] = { | |
| 921 { SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP }, | |
| 922 { SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT }, | |
| 923 { SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN } | |
| 924 }; | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
925 SDL_logical_joydecl(SDL_Joystick *logicaljoy = NULL); |
| 1551 | 926 SDL_logical_joydecl(struct joystick_logical_mapping* hats = NULL); |
| 0 | 927 |
| 928 the_hat = &stick->hwdata->hats[hat]; | |
| 929 if ( value < 0 ) { | |
| 930 value = 0; | |
| 931 } else | |
| 932 if ( value == 0 ) { | |
| 933 value = 1; | |
| 934 } else | |
| 935 if ( value > 0 ) { | |
| 936 value = 2; | |
| 937 } | |
| 938 if ( value != the_hat->axis[axis] ) { | |
| 939 the_hat->axis[axis] = value; | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
940 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
941 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
942 /* if there's no map then this is just a regular joystick |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
943 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
944 if (SDL_joylist[stick->index].map != NULL) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
945 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
946 /* get the fake joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
947 */ |
| 1551 | 948 hats = SDL_joylist[stick->index].map->hatmap+hat; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
949 logicaljoy = FindLogicalJoystick(stick, hats); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
950 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
951 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
952 if (logicaljoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
953 stick = logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
954 hat = hats->nthing; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
955 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
956 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
957 |
| 0 | 958 SDL_PrivateJoystickHat(stick, hat, |
| 959 position_map[the_hat->axis[1]][the_hat->axis[0]]); | |
| 960 } | |
| 961 } | |
| 962 | |
| 963 static __inline__ | |
| 964 void HandleBall(SDL_Joystick *stick, Uint8 ball, int axis, int value) | |
| 965 { | |
| 966 stick->hwdata->balls[ball].axis[axis] += value; | |
| 967 } | |
| 968 | |
| 969 /* Function to update the state of a joystick - called as a device poll. | |
| 970 * This function shouldn't update the joystick structure directly, | |
| 971 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 972 * and update joystick device state. | |
| 973 */ | |
| 974 static __inline__ void JS_HandleEvents(SDL_Joystick *joystick) | |
| 975 { | |
| 976 struct js_event events[32]; | |
| 977 int i, len; | |
| 978 Uint8 other_axis; | |
| 979 | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
980 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
981 if (SDL_joylist[joystick->index].fname == NULL) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
982 SDL_joylist_head(i, joystick->index); |
|
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983 JS_HandleEvents(SDL_joylist[i].joy); |
|
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984 return; |
|
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985 } |
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986 #endif |
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987 |
| 0 | 988 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 989 len /= sizeof(events[0]); | |
| 990 for ( i=0; i<len; ++i ) { | |
| 991 switch (events[i].type & ~JS_EVENT_INIT) { | |
| 992 case JS_EVENT_AXIS: | |
| 993 if ( events[i].number < joystick->naxes ) { | |
|
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994 #ifndef NO_LOGICAL_JOYSTICKS |
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995 if (!LogicalJoystickAxis(joystick, |
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996 events[i].number, events[i].value)) |
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997 #endif |
| 0 | 998 SDL_PrivateJoystickAxis(joystick, |
| 999 events[i].number, events[i].value); | |
| 1000 break; | |
| 1001 } | |
| 1002 events[i].number -= joystick->naxes; | |
|
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1003 other_axis = (events[i].number / 2); |
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1004 if ( other_axis < joystick->nhats ) { |
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1005 HandleHat(joystick, other_axis, |
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1006 events[i].number%2, |
|
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1007 events[i].value); |
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1008 break; |
| 0 | 1009 } |
| 1010 events[i].number -= joystick->nhats*2; | |
| 1011 other_axis = (events[i].number / 2); | |
| 1012 if ( other_axis < joystick->nballs ) { | |
| 1013 HandleBall(joystick, other_axis, | |
| 1014 events[i].number%2, | |
| 1015 events[i].value); | |
| 1016 break; | |
| 1017 } | |
| 1018 break; | |
| 1019 case JS_EVENT_BUTTON: | |
|
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1020 #ifndef NO_LOGICAL_JOYSTICKS |
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1021 if (!LogicalJoystickButton(joystick, |
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1022 events[i].number, events[i].value)) |
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1023 #endif |
| 0 | 1024 SDL_PrivateJoystickButton(joystick, |
| 1025 events[i].number, events[i].value); | |
| 1026 break; | |
| 1027 default: | |
| 1028 /* ?? */ | |
| 1029 break; | |
| 1030 } | |
| 1031 } | |
| 1032 } | |
| 1033 } | |
|
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1034 #if SDL_INPUT_LINUXEV |
| 0 | 1035 static __inline__ int EV_AxisCorrect(SDL_Joystick *joystick, int which, int value) |
| 1036 { | |
| 1037 struct axis_correct *correct; | |
| 1038 | |
| 1039 correct = &joystick->hwdata->abs_correct[which]; | |
| 1040 if ( correct->used ) { | |
| 1041 if ( value > correct->coef[0] ) { | |
| 1042 if ( value < correct->coef[1] ) { | |
| 1043 return 0; | |
| 1044 } | |
| 1045 value -= correct->coef[1]; | |
| 1046 } else { | |
| 1047 value -= correct->coef[0]; | |
| 1048 } | |
| 1049 value *= correct->coef[2]; | |
| 1050 value >>= 14; | |
| 1051 } | |
|
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1052 |
| 0 | 1053 /* Clamp and return */ |
| 1275 | 1054 if ( value < -32768 ) return -32768; |
|
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1055 if ( value > 32767 ) return 32767; |
|
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1056 |
| 0 | 1057 return value; |
| 1058 } | |
| 1059 | |
| 1060 static __inline__ void EV_HandleEvents(SDL_Joystick *joystick) | |
| 1061 { | |
| 1062 struct input_event events[32]; | |
| 1063 int i, len; | |
| 1064 int code; | |
| 1065 | |
|
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1066 #ifndef NO_LOGICAL_JOYSTICKS |
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1067 if (SDL_joylist[joystick->index].fname == NULL) { |
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1068 SDL_joylist_head(i, joystick->index); |
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1069 return EV_HandleEvents(SDL_joylist[i].joy); |
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1070 } |
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1071 #endif |
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1072 |
| 0 | 1073 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 1074 len /= sizeof(events[0]); | |
| 1075 for ( i=0; i<len; ++i ) { | |
| 1076 code = events[i].code; | |
| 1077 switch (events[i].type) { | |
| 1078 case EV_KEY: | |
| 1079 if ( code >= BTN_MISC ) { | |
| 1080 code -= BTN_MISC; | |
|
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1081 #ifndef NO_LOGICAL_JOYSTICKS |
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1082 if (!LogicalJoystickButton(joystick, |
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1083 joystick->hwdata->key_map[code], |
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1084 events[i].value)) |
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1085 #endif |
| 0 | 1086 SDL_PrivateJoystickButton(joystick, |
| 1087 joystick->hwdata->key_map[code], | |
| 1088 events[i].value); | |
| 1089 } | |
| 1090 break; | |
| 1091 case EV_ABS: | |
| 1092 switch (code) { | |
| 1093 case ABS_HAT0X: | |
| 1094 case ABS_HAT0Y: | |
| 1095 case ABS_HAT1X: | |
| 1096 case ABS_HAT1Y: | |
| 1097 case ABS_HAT2X: | |
| 1098 case ABS_HAT2Y: | |
| 1099 case ABS_HAT3X: | |
| 1100 case ABS_HAT3Y: | |
| 1101 code -= ABS_HAT0X; | |
| 1102 HandleHat(joystick, code/2, code%2, | |
| 1103 events[i].value); | |
| 1104 break; | |
| 1105 default: | |
| 1106 events[i].value = EV_AxisCorrect(joystick, code, events[i].value); | |
|
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1107 #ifndef NO_LOGICAL_JOYSTICKS |
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1108 if (!LogicalJoystickAxis(joystick, |
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1109 joystick->hwdata->abs_map[code], |
|
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1110 events[i].value)) |
|
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1111 #endif |
| 0 | 1112 SDL_PrivateJoystickAxis(joystick, |
| 1113 joystick->hwdata->abs_map[code], | |
| 1114 events[i].value); | |
| 1115 break; | |
| 1116 } | |
| 1117 break; | |
| 1118 case EV_REL: | |
| 1119 switch (code) { | |
| 1120 case REL_X: | |
| 1121 case REL_Y: | |
| 1122 code -= REL_X; | |
| 1123 HandleBall(joystick, code/2, code%2, | |
| 1124 events[i].value); | |
| 1125 break; | |
| 1126 default: | |
| 1127 break; | |
| 1128 } | |
| 1129 break; | |
| 1130 default: | |
| 1131 break; | |
| 1132 } | |
| 1133 } | |
| 1134 } | |
| 1135 } | |
|
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1136 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 1137 |
| 1138 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 1139 { | |
| 1140 int i; | |
| 1141 | |
|
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1142 #if SDL_INPUT_LINUXEV |
| 0 | 1143 if ( joystick->hwdata->is_hid ) |
| 1144 EV_HandleEvents(joystick); | |
| 1145 else | |
| 1146 #endif | |
| 1147 JS_HandleEvents(joystick); | |
| 1148 | |
| 1149 /* Deliver ball motion updates */ | |
| 1150 for ( i=0; i<joystick->nballs; ++i ) { | |
| 1151 int xrel, yrel; | |
| 1152 | |
| 1153 xrel = joystick->hwdata->balls[i].axis[0]; | |
| 1154 yrel = joystick->hwdata->balls[i].axis[1]; | |
| 1155 if ( xrel || yrel ) { | |
| 1156 joystick->hwdata->balls[i].axis[0] = 0; | |
| 1157 joystick->hwdata->balls[i].axis[1] = 0; | |
| 1158 SDL_PrivateJoystickBall(joystick, (Uint8)i, xrel, yrel); | |
| 1159 } | |
| 1160 } | |
| 1161 } | |
| 1162 | |
| 1163 /* Function to close a joystick after use */ | |
| 1164 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 1165 { | |
|
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1166 #ifndef NO_LOGICAL_JOYSTICKS |
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dc29e5907694
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|
1167 register int i; |
|
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1168 if (SDL_joylist[joystick->index].fname == NULL) { |
|
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1169 SDL_joylist_head(i, joystick->index); |
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1170 SDL_JoystickClose(SDL_joylist[i].joy); |
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1171 } |
|
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1172 #endif |
|
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1173 |
| 0 | 1174 if ( joystick->hwdata ) { |
|
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1175 #ifndef NO_LOGICAL_JOYSTICKS |
|
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1176 if (SDL_joylist[joystick->index].fname != NULL) |
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1177 #endif |
| 0 | 1178 close(joystick->hwdata->fd); |
| 1179 if ( joystick->hwdata->hats ) { | |
|
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1180 SDL_free(joystick->hwdata->hats); |
| 0 | 1181 } |
| 1182 if ( joystick->hwdata->balls ) { | |
|
1336
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1183 SDL_free(joystick->hwdata->balls); |
| 0 | 1184 } |
|
1336
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Use SDL_ prefixed versions of C library functions.
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|
1185 SDL_free(joystick->hwdata); |
| 0 | 1186 joystick->hwdata = NULL; |
| 1187 } | |
| 1188 } | |
| 1189 | |
| 1190 /* Function to perform any system-specific joystick related cleanup */ | |
| 1191 void SDL_SYS_JoystickQuit(void) | |
| 1192 { | |
| 1193 int i; | |
| 1194 | |
|
892
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1195 for ( i=0; SDL_joylist[i].fname; ++i ) { |
|
1336
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Use SDL_ prefixed versions of C library functions.
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1196 SDL_free(SDL_joylist[i].fname); |
| 0 | 1197 } |
|
892
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1198 SDL_joylist[0].fname = NULL; |
| 0 | 1199 } |
| 1200 | |
|
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1201 #endif /* SDL_JOYSTICK_LINUX */ |