Mercurial > sdl-ios-xcode
annotate src/joystick/linux/SDL_sysjoystick.c @ 4352:c8bf421431f9 SDL-1.2
Fixed bug #853
Ludwig Nussel 2009-10-18 05:34:18 PDT
src/joystick/linux/SDL_sysjoystick.c has some problems:
- test_bit() might break with strict aliasing
- test_bit() assumes array is Uint32 but its actually "unsigned long"
on 64bit systems sizeof(long) != sizeof(Uint32).
- the keybit array is too small
- the arrays are unitialized so the number of
detected buttons is quite random
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 18 Oct 2009 16:14:57 +0000 |
| parents | 0530394b5830 |
| children | 42012a6afb5b |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 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 */ | |
| 33 #include <linux/joystick.h> | |
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34 #if SDL_INPUT_LINUXEV |
| 0 | 35 #include <linux/input.h> |
| 36 #endif | |
| 37 | |
| 38 #include "SDL_joystick.h" | |
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39 #include "../SDL_sysjoystick.h" |
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40 #include "../SDL_joystick_c.h" |
| 0 | 41 |
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42 /* Special joystick configurations */ |
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43 static struct { |
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44 const char *name; |
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45 int naxes; |
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46 int nhats; |
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47 int nballs; |
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48 } special_joysticks[] = { |
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49 { "MadCatz Panther XL", 3, 2, 1 }, /* We don't handle rudder (axis 8) */ |
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50 { "SideWinder Precision Pro", 4, 1, 0 }, |
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51 { "SideWinder 3D Pro", 4, 1, 0 }, |
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52 { "Microsoft SideWinder 3D Pro", 4, 1, 0 }, |
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53 { "Microsoft SideWinder Precision Pro", 4, 1, 0 }, |
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54 { "Microsoft SideWinder Dual Strike USB version 1.0", 2, 1, 0 }, |
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55 { "WingMan Interceptor", 3, 3, 0 }, |
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56 { "WingMan Extreme Digital 3D", 4, 1, 0 }, |
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57 { "Microsoft SideWinder Precision 2 Joystick", 4, 1, 0 }, |
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58 { "Logitech Inc. WingMan Extreme Digital 3D", 4, 1, 0 }, |
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59 { "Saitek Saitek X45", 6, 1, 0 } |
| 0 | 60 }; |
| 61 | |
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62 /* It looks like newer kernels have the logical mapping at the driver level */ |
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63 #define NO_LOGICAL_JOYSTICKS |
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64 |
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65 #ifndef NO_LOGICAL_JOYSTICKS |
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66 |
| 1551 | 67 /* |
| 68 Some USB HIDs show up as a single joystick even though they actually | |
| 69 control 2 or more joysticks. | |
| 70 */ | |
| 71 /* | |
| 72 This code handles the MP-8800 (Quad) and MP-8866 (Dual), which can | |
| 73 be identified by their transparent blue design. It's quite trivial | |
| 74 to add other joysticks with similar quirky behavior. | |
| 75 -id | |
| 76 */ | |
| 77 | |
| 78 struct joystick_logical_mapping { | |
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79 int njoy; |
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80 int nthing; |
| 1551 | 81 }; |
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82 |
| 1551 | 83 /* |
| 84 {logical joy, logical axis}, | |
| 85 {logical joy, logical hat}, | |
| 86 {logical joy, logical ball}, | |
| 87 {logical joy, logical button} | |
| 88 */ | |
| 89 | |
| 90 static struct joystick_logical_mapping mp88xx_1_logical_axismap[] = { | |
| 91 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5} | |
| 92 }; | |
| 93 static struct joystick_logical_mapping mp88xx_1_logical_buttonmap[] = { | |
| 94 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11} | |
| 95 }; | |
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96 |
| 1551 | 97 static struct joystick_logical_mapping mp88xx_2_logical_axismap[] = { |
| 98 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 99 {1,2},{1,3},{0,4},{0,5},{1,4},{1,5} | |
| 100 }; | |
| 101 static struct joystick_logical_mapping mp88xx_2_logical_buttonmap[] = { | |
| 102 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, | |
| 103 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11} | |
| 104 }; | |
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105 |
| 1551 | 106 static struct joystick_logical_mapping mp88xx_3_logical_axismap[] = { |
| 107 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 108 {1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, | |
| 109 {0,4},{0,5},{1,4},{1,5},{2,4},{2,5} | |
| 110 }; | |
| 111 static struct joystick_logical_mapping mp88xx_3_logical_buttonmap[] = { | |
| 112 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, | |
| 113 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11}, | |
| 114 {2,0},{2,1},{2,2},{2,3},{2,4},{2,5},{2,6},{2,7},{2,8},{2,9},{2,10},{2,11} | |
| 115 }; | |
| 116 | |
| 117 static struct joystick_logical_mapping mp88xx_4_logical_axismap[] = { | |
| 118 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 119 {1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, | |
| 120 {3,0},{3,1},{3,2},{3,3},{0,4},{0,5}, | |
| 121 {1,4},{1,5},{2,4},{2,5},{3,4},{3,5} | |
| 122 }; | |
| 123 static struct joystick_logical_mapping mp88xx_4_logical_buttonmap[] = { | |
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124 {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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125 {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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126 {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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127 {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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128 }; |
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129 |
| 1551 | 130 struct joystick_logical_layout { |
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131 int naxes; |
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132 int nhats; |
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133 int nballs; |
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134 int nbuttons; |
| 1551 | 135 }; |
| 136 | |
| 137 static struct joystick_logical_layout mp88xx_1_logical_layout[] = { | |
| 138 {6, 0, 0, 12} | |
| 139 }; | |
| 140 static struct joystick_logical_layout mp88xx_2_logical_layout[] = { | |
| 141 {6, 0, 0, 12}, | |
| 142 {6, 0, 0, 12} | |
| 143 }; | |
| 144 static struct joystick_logical_layout mp88xx_3_logical_layout[] = { | |
| 145 {6, 0, 0, 12}, | |
| 146 {6, 0, 0, 12}, | |
| 147 {6, 0, 0, 12} | |
| 148 }; | |
| 149 static struct joystick_logical_layout mp88xx_4_logical_layout[] = { | |
| 150 {6, 0, 0, 12}, | |
| 151 {6, 0, 0, 12}, | |
| 152 {6, 0, 0, 12}, | |
| 153 {6, 0, 0, 12} | |
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154 }; |
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155 |
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156 /* |
| 1551 | 157 This array sets up a means of mapping a single physical joystick to |
| 158 multiple logical joysticks. (djm) | |
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159 |
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160 njoys |
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161 the number of logical joysticks |
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162 |
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163 layouts |
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164 an array of layout structures, one to describe each logical joystick |
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165 |
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166 axes, hats, balls, buttons |
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167 arrays that map a physical thingy to a logical thingy |
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168 */ |
| 1551 | 169 struct joystick_logicalmap { |
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170 const char *name; |
| 1551 | 171 int nbuttons; |
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172 int njoys; |
| 1551 | 173 struct joystick_logical_layout *layout; |
| 174 struct joystick_logical_mapping *axismap; | |
| 175 struct joystick_logical_mapping *hatmap; | |
| 176 struct joystick_logical_mapping *ballmap; | |
| 177 struct joystick_logical_mapping *buttonmap; | |
| 178 }; | |
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179 |
| 1551 | 180 static struct joystick_logicalmap joystick_logicalmap[] = { |
| 181 { | |
| 182 "WiseGroup.,Ltd MP-8866 Dual USB Joypad", | |
| 183 12, | |
| 184 1, | |
| 185 mp88xx_1_logical_layout, | |
| 186 mp88xx_1_logical_axismap, | |
| 187 NULL, | |
| 188 NULL, | |
| 189 mp88xx_1_logical_buttonmap | |
| 190 }, | |
| 191 { | |
| 192 "WiseGroup.,Ltd MP-8866 Dual USB Joypad", | |
| 193 24, | |
| 194 2, | |
| 195 mp88xx_2_logical_layout, | |
| 196 mp88xx_2_logical_axismap, | |
| 197 NULL, | |
| 198 NULL, | |
| 199 mp88xx_2_logical_buttonmap | |
| 200 }, | |
| 201 { | |
| 202 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 203 12, | |
| 204 1, | |
| 205 mp88xx_1_logical_layout, | |
| 206 mp88xx_1_logical_axismap, | |
| 207 NULL, | |
| 208 NULL, | |
| 209 mp88xx_1_logical_buttonmap | |
| 210 }, | |
| 211 { | |
| 212 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 213 24, | |
| 214 2, | |
| 215 mp88xx_2_logical_layout, | |
| 216 mp88xx_2_logical_axismap, | |
| 217 NULL, | |
| 218 NULL, | |
| 219 mp88xx_2_logical_buttonmap | |
| 220 }, | |
| 221 { | |
| 222 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 223 36, | |
| 224 3, | |
| 225 mp88xx_3_logical_layout, | |
| 226 mp88xx_3_logical_axismap, | |
| 227 NULL, | |
| 228 NULL, | |
| 229 mp88xx_3_logical_buttonmap | |
| 230 }, | |
| 231 { | |
| 232 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 233 48, | |
| 234 4, | |
| 235 mp88xx_4_logical_layout, | |
| 236 mp88xx_4_logical_axismap, | |
| 237 NULL, | |
| 238 NULL, | |
| 239 mp88xx_4_logical_buttonmap | |
| 240 } | |
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241 }; |
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242 |
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243 /* find the head of a linked list, given a point in it |
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244 */ |
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245 #define SDL_joylist_head(i, start)\ |
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246 for(i = start; SDL_joylist[i].fname == NULL;) i = SDL_joylist[i].prev; |
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247 |
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248 #define SDL_logical_joydecl(d) d |
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249 |
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250 |
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251 #else |
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252 |
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253 #define SDL_logical_joydecl(d) |
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254 |
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255 #endif /* USE_LOGICAL_JOYSTICKS */ |
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256 |
| 0 | 257 /* The maximum number of joysticks we'll detect */ |
| 258 #define MAX_JOYSTICKS 32 | |
| 259 | |
| 260 /* A list of available joysticks */ | |
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261 static struct |
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262 { |
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263 char* fname; |
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264 #ifndef NO_LOGICAL_JOYSTICKS |
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265 SDL_Joystick* joy; |
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266 struct joystick_logicalmap* map; |
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267 int prev; |
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268 int next; |
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269 int logicalno; |
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270 #endif /* USE_LOGICAL_JOYSTICKS */ |
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271 } SDL_joylist[MAX_JOYSTICKS]; |
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272 |
| 0 | 273 |
| 274 /* The private structure used to keep track of a joystick */ | |
| 275 struct joystick_hwdata { | |
| 276 int fd; | |
| 277 /* The current linux joystick driver maps hats to two axes */ | |
| 278 struct hwdata_hat { | |
| 279 int axis[2]; | |
| 280 } *hats; | |
| 281 /* The current linux joystick driver maps balls to two axes */ | |
| 282 struct hwdata_ball { | |
| 283 int axis[2]; | |
| 284 } *balls; | |
| 285 | |
| 286 /* Support for the Linux 2.4 unified input interface */ | |
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287 #if SDL_INPUT_LINUXEV |
| 0 | 288 SDL_bool is_hid; |
| 289 Uint8 key_map[KEY_MAX-BTN_MISC]; | |
| 290 Uint8 abs_map[ABS_MAX]; | |
| 291 struct axis_correct { | |
| 292 int used; | |
| 293 int coef[3]; | |
| 294 } abs_correct[ABS_MAX]; | |
| 295 #endif | |
| 296 }; | |
| 297 | |
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298 |
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299 #ifndef NO_LOGICAL_JOYSTICKS |
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300 |
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301 static int CountLogicalJoysticks(int max) |
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302 { |
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303 register int i, j, k, ret, prev; |
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304 const char* name; |
| 1551 | 305 int nbuttons, fd; |
| 306 unsigned char n; | |
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307 |
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308 ret = 0; |
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309 |
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310 for(i = 0; i < max; i++) { |
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311 name = SDL_SYS_JoystickName(i); |
| 1551 | 312 |
| 313 fd = open(SDL_joylist[i].fname, O_RDONLY, 0); | |
| 314 if ( fd >= 0 ) { | |
| 315 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { | |
| 316 nbuttons = -1; | |
| 317 } else { | |
| 318 nbuttons = n; | |
| 319 } | |
| 320 close(fd); | |
| 321 } | |
| 322 else { | |
| 323 nbuttons=-1; | |
| 324 } | |
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325 |
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326 if (name) { |
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327 for(j = 0; j < SDL_arraysize(joystick_logicalmap); j++) { |
| 1551 | 328 if (!SDL_strcmp(name, joystick_logicalmap[j].name) && (nbuttons==-1 || nbuttons==joystick_logicalmap[j].nbuttons)) { |
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329 prev = i; |
| 1551 | 330 SDL_joylist[prev].map = &(joystick_logicalmap[j]); |
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331 |
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332 for(k = 1; k < joystick_logicalmap[j].njoys; k++) { |
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333 SDL_joylist[prev].next = max + ret; |
| 1551 | 334 SDL_joylist[max+ret].prev = prev; |
| 335 | |
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336 prev = max + ret; |
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337 SDL_joylist[prev].logicalno = k; |
| 1551 | 338 SDL_joylist[prev].map = &(joystick_logicalmap[j]); |
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339 ret++; |
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340 } |
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341 |
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342 break; |
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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 |
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348 return ret; |
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349 } |
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350 |
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351 static void LogicalSuffix(int logicalno, char* namebuf, int len) |
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352 { |
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353 register int slen; |
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354 const static char suffixs[] = |
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355 "01020304050607080910111213141516171819" |
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356 "20212223242526272829303132"; |
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357 const char* suffix; |
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358 slen = SDL_strlen(namebuf); |
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359 suffix = NULL; |
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360 |
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361 if (logicalno*2<sizeof(suffixs)) |
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362 suffix = suffixs + (logicalno*2); |
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363 |
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364 if (slen + 4 < len && suffix) { |
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365 namebuf[slen++] = ' '; |
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366 namebuf[slen++] = '#'; |
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367 namebuf[slen++] = suffix[0]; |
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368 namebuf[slen++] = suffix[1]; |
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369 namebuf[slen++] = 0; |
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370 } |
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371 } |
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372 |
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373 #endif /* USE_LOGICAL_JOYSTICKS */ |
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374 |
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375 #if SDL_INPUT_LINUXEV |
| 0 | 376 #define test_bit(nr, addr) \ |
| 4352 | 377 (((1UL << ((nr) % (sizeof(long) * 8))) & ((addr)[(nr) / (sizeof(long) * 8)])) != 0) |
| 378 #define NBITS(x) ((((x)-1)/(sizeof(long) * 8))+1) | |
| 0 | 379 |
| 380 static int EV_IsJoystick(int fd) | |
| 381 { | |
| 4352 | 382 unsigned long evbit[NBITS(EV_MAX)] = { 0 }; |
| 383 unsigned long keybit[NBITS(KEY_MAX)] = { 0 }; | |
| 384 unsigned long absbit[NBITS(ABS_MAX)] = { 0 }; | |
| 0 | 385 |
| 386 if ( (ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) || | |
| 387 (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || | |
| 388 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0) ) { | |
| 389 return(0); | |
| 390 } | |
| 391 if (!(test_bit(EV_KEY, evbit) && test_bit(EV_ABS, evbit) && | |
| 392 test_bit(ABS_X, absbit) && test_bit(ABS_Y, absbit) && | |
| 393 (test_bit(BTN_TRIGGER, keybit) || test_bit(BTN_A, keybit) || test_bit(BTN_1, keybit)))) return 0; | |
| 394 return(1); | |
| 395 } | |
| 396 | |
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397 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 398 |
| 399 /* Function to scan the system for joysticks */ | |
| 400 int SDL_SYS_JoystickInit(void) | |
| 401 { | |
| 402 /* The base path of the joystick devices */ | |
|
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403 const char *joydev_pattern[] = { |
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404 #if SDL_INPUT_LINUXEV |
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405 "/dev/input/event%d", |
|
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406 #endif |
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407 "/dev/input/js%d", |
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408 "/dev/js%d" |
| 0 | 409 }; |
| 410 int numjoysticks; | |
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411 int i, j; |
| 0 | 412 int fd; |
| 413 char path[PATH_MAX]; | |
| 414 dev_t dev_nums[MAX_JOYSTICKS]; /* major/minor device numbers */ | |
| 415 struct stat sb; | |
| 416 int n, duplicate; | |
| 417 | |
| 418 numjoysticks = 0; | |
| 419 | |
| 420 /* First see if the user specified a joystick to use */ | |
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421 if ( SDL_getenv("SDL_JOYSTICK_DEVICE") != NULL ) { |
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422 SDL_strlcpy(path, SDL_getenv("SDL_JOYSTICK_DEVICE"), sizeof(path)); |
| 0 | 423 if ( stat(path, &sb) == 0 ) { |
| 424 fd = open(path, O_RDONLY, 0); | |
| 425 if ( fd >= 0 ) { | |
| 426 /* Assume the user knows what they're doing. */ | |
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427 SDL_joylist[numjoysticks].fname = SDL_strdup(path); |
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428 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 429 dev_nums[numjoysticks] = sb.st_rdev; |
| 430 ++numjoysticks; | |
| 431 } | |
| 432 close(fd); | |
| 433 } | |
| 434 } | |
| 435 } | |
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436 |
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437 for ( i=0; i<SDL_arraysize(joydev_pattern); ++i ) { |
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438 for ( j=0; j < MAX_JOYSTICKS; ++j ) { |
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439 SDL_snprintf(path, SDL_arraysize(path), joydev_pattern[i], j); |
| 0 | 440 |
| 441 /* rcg06302000 replaced access(F_OK) call with stat(). | |
| 442 * stat() will fail if the file doesn't exist, so it's | |
| 443 * equivalent behaviour. | |
| 444 */ | |
| 445 if ( stat(path, &sb) == 0 ) { | |
| 446 /* Check to make sure it's not already in list. | |
| 447 * This happens when we see a stick via symlink. | |
| 448 */ | |
| 449 duplicate = 0; | |
| 450 for (n=0; (n<numjoysticks) && !duplicate; ++n) { | |
| 451 if ( sb.st_rdev == dev_nums[n] ) { | |
| 452 duplicate = 1; | |
| 453 } | |
| 454 } | |
| 455 if (duplicate) { | |
| 456 continue; | |
| 457 } | |
| 458 | |
| 459 fd = open(path, O_RDONLY, 0); | |
| 460 if ( fd < 0 ) { | |
| 461 continue; | |
| 462 } | |
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463 #if SDL_INPUT_LINUXEV |
| 0 | 464 #ifdef DEBUG_INPUT_EVENTS |
| 465 printf("Checking %s\n", path); | |
| 466 #endif | |
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467 if ( (i == 0) && ! EV_IsJoystick(fd) ) { |
| 0 | 468 close(fd); |
| 469 continue; | |
| 470 } | |
| 471 #endif | |
| 472 close(fd); | |
| 473 | |
| 474 /* We're fine, add this joystick */ | |
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475 SDL_joylist[numjoysticks].fname = SDL_strdup(path); |
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476 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 477 dev_nums[numjoysticks] = sb.st_rdev; |
| 478 ++numjoysticks; | |
| 479 } | |
| 4114 | 480 } |
| 0 | 481 } |
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482 |
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483 #if SDL_INPUT_LINUXEV |
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484 /* This is a special case... |
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485 If the event devices are valid then the joystick devices |
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486 will be duplicates but without extra information about their |
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487 hats or balls. Unfortunately, the event devices can't |
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488 currently be calibrated, so it's a win-lose situation. |
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489 So : /dev/input/eventX = /dev/input/jsY = /dev/jsY |
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490 */ |
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491 if ( (i == 0) && (numjoysticks > 0) ) |
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492 break; |
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493 #endif |
| 0 | 494 } |
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495 #ifndef NO_LOGICAL_JOYSTICKS |
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496 numjoysticks += CountLogicalJoysticks(numjoysticks); |
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497 #endif |
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498 |
| 0 | 499 return(numjoysticks); |
| 500 } | |
| 501 | |
| 502 /* Function to get the device-dependent name of a joystick */ | |
| 503 const char *SDL_SYS_JoystickName(int index) | |
| 504 { | |
| 505 int fd; | |
| 506 static char namebuf[128]; | |
| 507 char *name; | |
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508 SDL_logical_joydecl(int oindex = index); |
| 0 | 509 |
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510 #ifndef NO_LOGICAL_JOYSTICKS |
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511 SDL_joylist_head(index, index); |
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512 #endif |
| 0 | 513 name = NULL; |
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514 fd = open(SDL_joylist[index].fname, O_RDONLY, 0); |
| 0 | 515 if ( fd >= 0 ) { |
| 516 if ( | |
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517 #if SDL_INPUT_LINUXEV |
| 0 | 518 (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) && |
| 519 #endif | |
| 520 (ioctl(fd, JSIOCGNAME(sizeof(namebuf)), namebuf) <= 0) ) { | |
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521 name = SDL_joylist[index].fname; |
| 0 | 522 } else { |
| 523 name = namebuf; | |
| 524 } | |
| 525 close(fd); | |
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526 |
| 1551 | 527 |
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528 #ifndef NO_LOGICAL_JOYSTICKS |
| 1551 | 529 if (SDL_joylist[oindex].prev || SDL_joylist[oindex].next || index!=oindex) |
| 530 { | |
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531 LogicalSuffix(SDL_joylist[oindex].logicalno, namebuf, 128); |
| 1551 | 532 } |
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533 #endif |
| 0 | 534 } |
| 535 return name; | |
| 536 } | |
| 537 | |
| 538 static int allocate_hatdata(SDL_Joystick *joystick) | |
| 539 { | |
| 540 int i; | |
| 541 | |
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542 joystick->hwdata->hats = (struct hwdata_hat *)SDL_malloc( |
| 0 | 543 joystick->nhats * sizeof(struct hwdata_hat)); |
| 544 if ( joystick->hwdata->hats == NULL ) { | |
| 545 return(-1); | |
| 546 } | |
| 547 for ( i=0; i<joystick->nhats; ++i ) { | |
| 548 joystick->hwdata->hats[i].axis[0] = 1; | |
| 549 joystick->hwdata->hats[i].axis[1] = 1; | |
| 550 } | |
| 551 return(0); | |
| 552 } | |
| 553 | |
| 554 static int allocate_balldata(SDL_Joystick *joystick) | |
| 555 { | |
| 556 int i; | |
| 557 | |
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558 joystick->hwdata->balls = (struct hwdata_ball *)SDL_malloc( |
| 0 | 559 joystick->nballs * sizeof(struct hwdata_ball)); |
| 560 if ( joystick->hwdata->balls == NULL ) { | |
| 561 return(-1); | |
| 562 } | |
| 563 for ( i=0; i<joystick->nballs; ++i ) { | |
| 564 joystick->hwdata->balls[i].axis[0] = 0; | |
| 565 joystick->hwdata->balls[i].axis[1] = 0; | |
| 566 } | |
| 567 return(0); | |
| 568 } | |
| 569 | |
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570 static SDL_bool JS_ConfigJoystick(SDL_Joystick *joystick, int fd) |
| 0 | 571 { |
| 572 SDL_bool handled; | |
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573 unsigned char n; |
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574 int old_axes, tmp_naxes, tmp_nhats, tmp_nballs; |
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575 const char *name; |
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576 char *env, env_name[128]; |
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577 int i; |
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578 |
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579 handled = SDL_FALSE; |
| 0 | 580 |
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581 /* Default joystick device settings */ |
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582 if ( ioctl(fd, JSIOCGAXES, &n) < 0 ) { |
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583 joystick->naxes = 2; |
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584 } else { |
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585 joystick->naxes = n; |
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586 } |
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587 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { |
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588 joystick->nbuttons = 2; |
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589 } else { |
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590 joystick->nbuttons = n; |
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591 } |
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592 |
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593 name = SDL_SYS_JoystickName(joystick->index); |
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594 old_axes = joystick->naxes; |
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595 |
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596 /* Generic analog joystick support */ |
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597 if ( SDL_strstr(name, "Analog") == name && SDL_strstr(name, "-hat") ) { |
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598 if ( SDL_sscanf(name,"Analog %d-axis %*d-button %d-hat", |
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599 &tmp_naxes, &tmp_nhats) == 2 ) { |
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600 |
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601 joystick->naxes = tmp_naxes; |
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602 joystick->nhats = tmp_nhats; |
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603 |
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604 handled = SDL_TRUE; |
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605 } |
| 0 | 606 } |
|
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607 |
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608 /* Special joystick support */ |
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609 for ( i=0; i < SDL_arraysize(special_joysticks); ++i ) { |
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610 if ( SDL_strcmp(name, special_joysticks[i].name) == 0 ) { |
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611 |
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612 joystick->naxes = special_joysticks[i].naxes; |
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613 joystick->nhats = special_joysticks[i].nhats; |
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614 joystick->nballs = special_joysticks[i].nballs; |
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615 |
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616 handled = SDL_TRUE; |
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617 break; |
|
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618 } |
| 0 | 619 } |
|
554
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620 |
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621 /* User environment joystick support */ |
|
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622 if ( (env = SDL_getenv("SDL_LINUX_JOYSTICK")) ) { |
|
1379
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623 *env_name = '\0'; |
|
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624 if ( *env == '\'' && SDL_sscanf(env, "'%[^']s'", env_name) == 1 ) |
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625 env += SDL_strlen(env_name)+2; |
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626 else if ( SDL_sscanf(env, "%s", env_name) == 1 ) |
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627 env += SDL_strlen(env_name); |
|
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628 |
|
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629 if ( SDL_strcmp(name, env_name) == 0 ) { |
| 0 | 630 |
|
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631 if ( SDL_sscanf(env, "%d %d %d", &tmp_naxes, &tmp_nhats, |
|
554
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632 &tmp_nballs) == 3 ) { |
|
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633 |
|
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634 joystick->naxes = tmp_naxes; |
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635 joystick->nhats = tmp_nhats; |
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636 joystick->nballs = tmp_nballs; |
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637 |
|
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638 handled = SDL_TRUE; |
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639 } |
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640 } |
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641 } |
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642 |
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643 /* Remap hats and balls */ |
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644 if (handled) { |
| 0 | 645 if ( joystick->nhats > 0 ) { |
|
589
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646 if ( allocate_hatdata(joystick) < 0 ) { |
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647 joystick->nhats = 0; |
| 0 | 648 } |
| 649 } | |
| 650 if ( joystick->nballs > 0 ) { | |
| 651 if ( allocate_balldata(joystick) < 0 ) { | |
| 652 joystick->nballs = 0; | |
| 653 } | |
| 654 } | |
| 655 } | |
|
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656 |
| 0 | 657 return(handled); |
| 658 } | |
| 659 | |
|
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660 #if SDL_INPUT_LINUXEV |
| 0 | 661 |
| 662 static SDL_bool EV_ConfigJoystick(SDL_Joystick *joystick, int fd) | |
| 663 { | |
| 871 | 664 int i, t; |
| 4352 | 665 unsigned long keybit[NBITS(KEY_MAX)] = { 0 }; |
| 666 unsigned long absbit[NBITS(ABS_MAX)] = { 0 }; | |
| 667 unsigned long relbit[NBITS(REL_MAX)] = { 0 }; | |
| 0 | 668 |
| 669 /* See if this device uses the new unified event API */ | |
| 670 if ( (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) >= 0) && | |
| 671 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) >= 0) && | |
| 672 (ioctl(fd, EVIOCGBIT(EV_REL, sizeof(relbit)), relbit) >= 0) ) { | |
| 673 joystick->hwdata->is_hid = SDL_TRUE; | |
| 674 | |
| 675 /* Get the number of buttons, axes, and other thingamajigs */ | |
| 676 for ( i=BTN_JOYSTICK; i < KEY_MAX; ++i ) { | |
| 677 if ( test_bit(i, keybit) ) { | |
| 678 #ifdef DEBUG_INPUT_EVENTS | |
| 679 printf("Joystick has button: 0x%x\n", i); | |
| 680 #endif | |
| 681 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 682 joystick->nbuttons; | |
| 683 ++joystick->nbuttons; | |
| 684 } | |
| 685 } | |
| 686 for ( i=BTN_MISC; i < BTN_JOYSTICK; ++i ) { | |
| 687 if ( test_bit(i, keybit) ) { | |
| 688 #ifdef DEBUG_INPUT_EVENTS | |
| 689 printf("Joystick has button: 0x%x\n", i); | |
| 690 #endif | |
| 691 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 692 joystick->nbuttons; | |
| 693 ++joystick->nbuttons; | |
| 694 } | |
| 695 } | |
| 696 for ( i=0; i<ABS_MAX; ++i ) { | |
| 697 /* Skip hats */ | |
| 698 if ( i == ABS_HAT0X ) { | |
| 699 i = ABS_HAT3Y; | |
| 700 continue; | |
| 701 } | |
| 702 if ( test_bit(i, absbit) ) { | |
| 703 int values[5]; | |
| 704 | |
|
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705 if ( ioctl(fd, EVIOCGABS(i), values) < 0 ) |
|
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706 continue; |
| 0 | 707 #ifdef DEBUG_INPUT_EVENTS |
| 708 printf("Joystick has absolute axis: %x\n", i); | |
| 709 printf("Values = { %d, %d, %d, %d, %d }\n", | |
| 710 values[0], values[1], | |
| 711 values[2], values[3], values[4]); | |
| 712 #endif /* DEBUG_INPUT_EVENTS */ | |
| 713 joystick->hwdata->abs_map[i] = joystick->naxes; | |
| 714 if ( values[1] == values[2] ) { | |
| 715 joystick->hwdata->abs_correct[i].used = 0; | |
| 716 } else { | |
| 717 joystick->hwdata->abs_correct[i].used = 1; | |
|
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|
718 joystick->hwdata->abs_correct[i].coef[0] = |
|
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719 (values[2] + values[1]) / 2 - values[4]; |
|
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720 joystick->hwdata->abs_correct[i].coef[1] = |
|
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721 (values[2] + values[1]) / 2 + values[4]; |
| 871 | 722 t = ((values[2] - values[1]) / 2 - 2 * values[4]); |
| 723 if ( t != 0 ) { | |
| 724 joystick->hwdata->abs_correct[i].coef[2] = (1 << 29) / t; | |
|
872
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|
725 } else { |
|
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726 joystick->hwdata->abs_correct[i].coef[2] = 0; |
| 871 | 727 } |
| 0 | 728 } |
| 729 ++joystick->naxes; | |
| 730 } | |
| 731 } | |
| 732 for ( i=ABS_HAT0X; i <= ABS_HAT3Y; i += 2 ) { | |
| 733 if ( test_bit(i, absbit) || test_bit(i+1, absbit) ) { | |
| 734 #ifdef DEBUG_INPUT_EVENTS | |
| 735 printf("Joystick has hat %d\n",(i-ABS_HAT0X)/2); | |
| 736 #endif | |
| 737 ++joystick->nhats; | |
| 738 } | |
| 739 } | |
| 740 if ( test_bit(REL_X, relbit) || test_bit(REL_Y, relbit) ) { | |
| 741 ++joystick->nballs; | |
| 742 } | |
| 743 | |
| 744 /* Allocate data to keep track of these thingamajigs */ | |
| 745 if ( joystick->nhats > 0 ) { | |
| 746 if ( allocate_hatdata(joystick) < 0 ) { | |
| 747 joystick->nhats = 0; | |
| 748 } | |
| 749 } | |
| 750 if ( joystick->nballs > 0 ) { | |
| 751 if ( allocate_balldata(joystick) < 0 ) { | |
| 752 joystick->nballs = 0; | |
| 753 } | |
| 754 } | |
| 755 } | |
| 756 return(joystick->hwdata->is_hid); | |
| 757 } | |
| 758 | |
|
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759 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 760 |
|
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|
761 #ifndef NO_LOGICAL_JOYSTICKS |
|
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|
762 static void ConfigLogicalJoystick(SDL_Joystick *joystick) |
|
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763 { |
|
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|
764 struct joystick_logical_layout* layout; |
|
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|
765 |
| 1551 | 766 layout = SDL_joylist[joystick->index].map->layout + |
|
892
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|
767 SDL_joylist[joystick->index].logicalno; |
|
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|
768 |
|
dc29e5907694
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|
769 joystick->nbuttons = layout->nbuttons; |
|
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|
770 joystick->nhats = layout->nhats; |
|
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|
771 joystick->naxes = layout->naxes; |
|
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772 joystick->nballs = layout->nballs; |
|
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diff
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|
773 } |
|
dc29e5907694
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774 #endif |
|
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|
775 |
|
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|
776 |
| 0 | 777 /* Function to open a joystick for use. |
| 778 The joystick to open is specified by the index field of the joystick. | |
| 779 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 780 It returns 0, or -1 if there is an error. | |
| 781 */ | |
| 782 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 783 { | |
| 784 int fd; | |
|
892
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diff
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|
785 SDL_logical_joydecl(int realindex); |
|
dc29e5907694
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|
786 SDL_logical_joydecl(SDL_Joystick *realjoy = NULL); |
| 0 | 787 |
| 788 /* Open the joystick and set the joystick file descriptor */ | |
|
892
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|
789 #ifndef NO_LOGICAL_JOYSTICKS |
|
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|
790 if (SDL_joylist[joystick->index].fname == NULL) { |
|
dc29e5907694
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Sam Lantinga <slouken@libsdl.org>
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|
791 SDL_joylist_head(realindex, joystick->index); |
|
dc29e5907694
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|
792 realjoy = SDL_JoystickOpen(realindex); |
|
dc29e5907694
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|
793 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
794 if (realjoy == NULL) |
|
dc29e5907694
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872
diff
changeset
|
795 return(-1); |
|
dc29e5907694
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|
796 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
797 fd = realjoy->hwdata->fd; |
|
dc29e5907694
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|
798 |
|
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|
799 } else { |
|
dc29e5907694
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|
800 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
|
dc29e5907694
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|
801 } |
|
dc29e5907694
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|
802 SDL_joylist[joystick->index].joy = joystick; |
|
dc29e5907694
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|
803 #else |
|
dc29e5907694
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|
804 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
|
dc29e5907694
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|
805 #endif |
|
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|
806 |
| 0 | 807 if ( fd < 0 ) { |
| 808 SDL_SetError("Unable to open %s\n", | |
| 809 SDL_joylist[joystick->index]); | |
| 810 return(-1); | |
| 811 } | |
| 812 joystick->hwdata = (struct joystick_hwdata *) | |
|
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|
813 SDL_malloc(sizeof(*joystick->hwdata)); |
| 0 | 814 if ( joystick->hwdata == NULL ) { |
| 815 SDL_OutOfMemory(); | |
| 816 close(fd); | |
| 817 return(-1); | |
| 818 } | |
|
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|
819 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
| 0 | 820 joystick->hwdata->fd = fd; |
| 821 | |
| 822 /* Set the joystick to non-blocking read mode */ | |
| 823 fcntl(fd, F_SETFL, O_NONBLOCK); | |
| 824 | |
| 825 /* Get the number of buttons and axes on the joystick */ | |
|
892
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|
826 #ifndef NO_LOGICAL_JOYSTICKS |
|
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changeset
|
827 if (realjoy) |
|
dc29e5907694
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|
828 ConfigLogicalJoystick(joystick); |
|
dc29e5907694
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|
829 else |
|
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|
830 #endif |
|
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
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|
831 #if SDL_INPUT_LINUXEV |
| 0 | 832 if ( ! EV_ConfigJoystick(joystick, fd) ) |
| 833 #endif | |
|
554
38b1a98aeb11
Linux joystick cleanups from Alan Swanson
Sam Lantinga <slouken@libsdl.org>
parents:
408
diff
changeset
|
834 JS_ConfigJoystick(joystick, fd); |
|
38b1a98aeb11
Linux joystick cleanups from Alan Swanson
Sam Lantinga <slouken@libsdl.org>
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|
835 |
| 0 | 836 return(0); |
| 837 } | |
| 838 | |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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872
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changeset
|
839 #ifndef NO_LOGICAL_JOYSTICKS |
|
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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840 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
841 static SDL_Joystick* FindLogicalJoystick( |
| 1551 | 842 SDL_Joystick *joystick, struct joystick_logical_mapping* v) |
|
892
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|
843 { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
844 SDL_Joystick *logicaljoy; |
|
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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|
845 register int i; |
|
dc29e5907694
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Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
846 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
847 i = joystick->index; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
848 logicaljoy = NULL; |
|
dc29e5907694
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parents:
872
diff
changeset
|
849 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
850 /* get the fake joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
851 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
852 for(;;) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
853 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
854 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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872
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changeset
|
855 logicaljoy = SDL_joylist[i].joy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
856 break; |
|
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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|
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 |
|
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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|
859 if (SDL_joylist[i].next == 0) |
|
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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|
860 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
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|
861 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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|
862 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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|
863 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
864 } |
|
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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|
865 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
866 return logicaljoy; |
|
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
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|
868 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
869 static int LogicalJoystickButton( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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872
diff
changeset
|
870 SDL_Joystick *joystick, Uint8 button, Uint8 state){ |
| 1551 | 871 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
|
872 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
873 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
874 /* 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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parents:
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diff
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|
875 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
changeset
|
876 if (SDL_joylist[joystick->index].map == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
877 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
changeset
|
878 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
879 /* 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
|
880 */ |
| 1551 | 881 buttons = SDL_joylist[joystick->index].map->buttonmap+button; |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
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|
882 logicaljoy = FindLogicalJoystick(joystick, buttons); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
883 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
884 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
885 return 1; |
|
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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|
886 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
887 SDL_PrivateJoystickButton(logicaljoy, buttons->nthing, state); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
888 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
889 return 1; |
|
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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|
891 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
892 static int LogicalJoystickAxis( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
893 SDL_Joystick *joystick, Uint8 axis, Sint16 value) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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|
894 { |
| 1551 | 895 struct joystick_logical_mapping* axes; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
896 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
897 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
898 /* 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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|
899 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
900 if (SDL_joylist[joystick->index].map == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
901 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
902 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
903 /* get the logical joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
904 */ |
| 1551 | 905 axes = SDL_joylist[joystick->index].map->axismap+axis; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
906 logicaljoy = FindLogicalJoystick(joystick, axes); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
907 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
908 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
909 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
910 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
911 SDL_PrivateJoystickAxis(logicaljoy, axes->nthing, value); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
912 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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changeset
|
913 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
914 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
915 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
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|
916 |
| 0 | 917 static __inline__ |
| 918 void HandleHat(SDL_Joystick *stick, Uint8 hat, int axis, int value) | |
| 919 { | |
| 920 struct hwdata_hat *the_hat; | |
| 921 const Uint8 position_map[3][3] = { | |
| 922 { SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP }, | |
| 923 { SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT }, | |
| 924 { SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN } | |
| 925 }; | |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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|
926 SDL_logical_joydecl(SDL_Joystick *logicaljoy = NULL); |
| 1551 | 927 SDL_logical_joydecl(struct joystick_logical_mapping* hats = NULL); |
| 0 | 928 |
| 929 the_hat = &stick->hwdata->hats[hat]; | |
| 930 if ( value < 0 ) { | |
| 931 value = 0; | |
| 932 } else | |
| 933 if ( value == 0 ) { | |
| 934 value = 1; | |
| 935 } else | |
| 936 if ( value > 0 ) { | |
| 937 value = 2; | |
| 938 } | |
| 939 if ( value != the_hat->axis[axis] ) { | |
| 940 the_hat->axis[axis] = value; | |
|
892
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|
941 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
942 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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diff
changeset
|
943 /* 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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|
944 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
945 if (SDL_joylist[stick->index].map != NULL) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
946 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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changeset
|
947 /* get the fake joystick that will receive the event |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
948 */ |
| 1551 | 949 hats = SDL_joylist[stick->index].map->hatmap+hat; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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872
diff
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|
950 logicaljoy = FindLogicalJoystick(stick, hats); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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changeset
|
951 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
952 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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872
diff
changeset
|
953 if (logicaljoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
954 stick = logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
955 hat = hats->nthing; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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872
diff
changeset
|
956 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
957 #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
|
958 |
| 0 | 959 SDL_PrivateJoystickHat(stick, hat, |
| 960 position_map[the_hat->axis[1]][the_hat->axis[0]]); | |
| 961 } | |
| 962 } | |
| 963 | |
| 964 static __inline__ | |
| 965 void HandleBall(SDL_Joystick *stick, Uint8 ball, int axis, int value) | |
| 966 { | |
| 967 stick->hwdata->balls[ball].axis[axis] += value; | |
| 968 } | |
| 969 | |
| 970 /* Function to update the state of a joystick - called as a device poll. | |
| 971 * This function shouldn't update the joystick structure directly, | |
| 972 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 973 * and update joystick device state. | |
| 974 */ | |
| 975 static __inline__ void JS_HandleEvents(SDL_Joystick *joystick) | |
| 976 { | |
| 977 struct js_event events[32]; | |
| 978 int i, len; | |
| 979 Uint8 other_axis; | |
| 980 | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
981 #ifndef NO_LOGICAL_JOYSTICKS |
|
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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982 if (SDL_joylist[joystick->index].fname == NULL) { |
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983 SDL_joylist_head(i, joystick->index); |
|
1752
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SDL_sysjoystick.c:983: warning: 'return' with a value, in function returning void
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984 JS_HandleEvents(SDL_joylist[i].joy); |
|
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985 return; |
|
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986 } |
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987 #endif |
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988 |
| 0 | 989 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 990 len /= sizeof(events[0]); | |
| 991 for ( i=0; i<len; ++i ) { | |
| 992 switch (events[i].type & ~JS_EVENT_INIT) { | |
| 993 case JS_EVENT_AXIS: | |
| 994 if ( events[i].number < joystick->naxes ) { | |
|
892
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995 #ifndef NO_LOGICAL_JOYSTICKS |
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996 if (!LogicalJoystickAxis(joystick, |
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997 events[i].number, events[i].value)) |
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998 #endif |
| 0 | 999 SDL_PrivateJoystickAxis(joystick, |
| 1000 events[i].number, events[i].value); | |
| 1001 break; | |
| 1002 } | |
| 1003 events[i].number -= joystick->naxes; | |
|
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Removed obsolete Linux joystick code
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1004 other_axis = (events[i].number / 2); |
|
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Removed obsolete Linux joystick code
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1005 if ( other_axis < joystick->nhats ) { |
|
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Removed obsolete Linux joystick code
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1006 HandleHat(joystick, other_axis, |
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Removed obsolete Linux joystick code
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1007 events[i].number%2, |
|
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Removed obsolete Linux joystick code
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1008 events[i].value); |
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1009 break; |
| 0 | 1010 } |
| 1011 events[i].number -= joystick->nhats*2; | |
| 1012 other_axis = (events[i].number / 2); | |
| 1013 if ( other_axis < joystick->nballs ) { | |
| 1014 HandleBall(joystick, other_axis, | |
| 1015 events[i].number%2, | |
| 1016 events[i].value); | |
| 1017 break; | |
| 1018 } | |
| 1019 break; | |
| 1020 case JS_EVENT_BUTTON: | |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1021 #ifndef NO_LOGICAL_JOYSTICKS |
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1022 if (!LogicalJoystickButton(joystick, |
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1023 events[i].number, events[i].value)) |
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1024 #endif |
| 0 | 1025 SDL_PrivateJoystickButton(joystick, |
| 1026 events[i].number, events[i].value); | |
| 1027 break; | |
| 1028 default: | |
| 1029 /* ?? */ | |
| 1030 break; | |
| 1031 } | |
| 1032 } | |
| 1033 } | |
| 1034 } | |
|
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1035 #if SDL_INPUT_LINUXEV |
| 0 | 1036 static __inline__ int EV_AxisCorrect(SDL_Joystick *joystick, int which, int value) |
| 1037 { | |
| 1038 struct axis_correct *correct; | |
| 1039 | |
| 1040 correct = &joystick->hwdata->abs_correct[which]; | |
| 1041 if ( correct->used ) { | |
| 1042 if ( value > correct->coef[0] ) { | |
| 1043 if ( value < correct->coef[1] ) { | |
| 1044 return 0; | |
| 1045 } | |
| 1046 value -= correct->coef[1]; | |
| 1047 } else { | |
| 1048 value -= correct->coef[0]; | |
| 1049 } | |
| 1050 value *= correct->coef[2]; | |
| 1051 value >>= 14; | |
| 1052 } | |
|
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Linux joystick cleanups from Alan Swanson
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1053 |
| 0 | 1054 /* Clamp and return */ |
| 1275 | 1055 if ( value < -32768 ) return -32768; |
|
554
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1056 if ( value > 32767 ) return 32767; |
|
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1057 |
| 0 | 1058 return value; |
| 1059 } | |
| 1060 | |
| 1061 static __inline__ void EV_HandleEvents(SDL_Joystick *joystick) | |
| 1062 { | |
| 1063 struct input_event events[32]; | |
| 1064 int i, len; | |
| 1065 int code; | |
| 1066 | |
|
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1067 #ifndef NO_LOGICAL_JOYSTICKS |
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1068 if (SDL_joylist[joystick->index].fname == NULL) { |
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1069 SDL_joylist_head(i, joystick->index); |
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1070 return EV_HandleEvents(SDL_joylist[i].joy); |
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1071 } |
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1072 #endif |
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1073 |
| 0 | 1074 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 1075 len /= sizeof(events[0]); | |
| 1076 for ( i=0; i<len; ++i ) { | |
| 1077 code = events[i].code; | |
| 1078 switch (events[i].type) { | |
| 1079 case EV_KEY: | |
| 1080 if ( code >= BTN_MISC ) { | |
| 1081 code -= BTN_MISC; | |
|
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1082 #ifndef NO_LOGICAL_JOYSTICKS |
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1083 if (!LogicalJoystickButton(joystick, |
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dc29e5907694
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1084 joystick->hwdata->key_map[code], |
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1085 events[i].value)) |
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dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1086 #endif |
| 0 | 1087 SDL_PrivateJoystickButton(joystick, |
| 1088 joystick->hwdata->key_map[code], | |
| 1089 events[i].value); | |
| 1090 } | |
| 1091 break; | |
| 1092 case EV_ABS: | |
| 1093 switch (code) { | |
| 1094 case ABS_HAT0X: | |
| 1095 case ABS_HAT0Y: | |
| 1096 case ABS_HAT1X: | |
| 1097 case ABS_HAT1Y: | |
| 1098 case ABS_HAT2X: | |
| 1099 case ABS_HAT2Y: | |
| 1100 case ABS_HAT3X: | |
| 1101 case ABS_HAT3Y: | |
| 1102 code -= ABS_HAT0X; | |
| 1103 HandleHat(joystick, code/2, code%2, | |
| 1104 events[i].value); | |
| 1105 break; | |
| 1106 default: | |
| 1107 events[i].value = EV_AxisCorrect(joystick, code, events[i].value); | |
|
892
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1108 #ifndef NO_LOGICAL_JOYSTICKS |
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1109 if (!LogicalJoystickAxis(joystick, |
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1110 joystick->hwdata->abs_map[code], |
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1111 events[i].value)) |
|
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1112 #endif |
| 0 | 1113 SDL_PrivateJoystickAxis(joystick, |
| 1114 joystick->hwdata->abs_map[code], | |
| 1115 events[i].value); | |
| 1116 break; | |
| 1117 } | |
| 1118 break; | |
| 1119 case EV_REL: | |
| 1120 switch (code) { | |
| 1121 case REL_X: | |
| 1122 case REL_Y: | |
| 1123 code -= REL_X; | |
| 1124 HandleBall(joystick, code/2, code%2, | |
| 1125 events[i].value); | |
| 1126 break; | |
| 1127 default: | |
| 1128 break; | |
| 1129 } | |
| 1130 break; | |
| 1131 default: | |
| 1132 break; | |
| 1133 } | |
| 1134 } | |
| 1135 } | |
| 1136 } | |
|
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1137 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 1138 |
| 1139 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 1140 { | |
| 1141 int i; | |
| 1142 | |
|
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1143 #if SDL_INPUT_LINUXEV |
| 0 | 1144 if ( joystick->hwdata->is_hid ) |
| 1145 EV_HandleEvents(joystick); | |
| 1146 else | |
| 1147 #endif | |
| 1148 JS_HandleEvents(joystick); | |
| 1149 | |
| 1150 /* Deliver ball motion updates */ | |
| 1151 for ( i=0; i<joystick->nballs; ++i ) { | |
| 1152 int xrel, yrel; | |
| 1153 | |
| 1154 xrel = joystick->hwdata->balls[i].axis[0]; | |
| 1155 yrel = joystick->hwdata->balls[i].axis[1]; | |
| 1156 if ( xrel || yrel ) { | |
| 1157 joystick->hwdata->balls[i].axis[0] = 0; | |
| 1158 joystick->hwdata->balls[i].axis[1] = 0; | |
| 1159 SDL_PrivateJoystickBall(joystick, (Uint8)i, xrel, yrel); | |
| 1160 } | |
| 1161 } | |
| 1162 } | |
| 1163 | |
| 1164 /* Function to close a joystick after use */ | |
| 1165 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 1166 { | |
|
892
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1167 #ifndef NO_LOGICAL_JOYSTICKS |
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dc29e5907694
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|
1168 register int i; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1169 if (SDL_joylist[joystick->index].fname == NULL) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1170 SDL_joylist_head(i, joystick->index); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1171 SDL_JoystickClose(SDL_joylist[i].joy); |
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dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1172 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1173 #endif |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1174 |
| 0 | 1175 if ( joystick->hwdata ) { |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1176 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1177 if (SDL_joylist[joystick->index].fname != NULL) |
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dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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1178 #endif |
| 0 | 1179 close(joystick->hwdata->fd); |
| 1180 if ( joystick->hwdata->hats ) { | |
|
1336
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Use SDL_ prefixed versions of C library functions.
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|
1181 SDL_free(joystick->hwdata->hats); |
| 0 | 1182 } |
| 1183 if ( joystick->hwdata->balls ) { | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
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|
1184 SDL_free(joystick->hwdata->balls); |
| 0 | 1185 } |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1186 SDL_free(joystick->hwdata); |
| 0 | 1187 joystick->hwdata = NULL; |
| 1188 } | |
| 1189 } | |
| 1190 | |
| 1191 /* Function to perform any system-specific joystick related cleanup */ | |
| 1192 void SDL_SYS_JoystickQuit(void) | |
| 1193 { | |
| 1194 int i; | |
| 1195 | |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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|
1196 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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|
1197 SDL_free(SDL_joylist[i].fname); |
| 4226 | 1198 SDL_joylist[i].fname = NULL; |
| 0 | 1199 } |
| 1200 } | |
| 1201 | |
|
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Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
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|
1202 #endif /* SDL_JOYSTICK_LINUX */ |