Mercurial > sdl-ios-xcode
annotate src/joystick/linux/SDL_sysjoystick.c @ 3880:74e828c64315 SDL-1.2
Fixed bug #292
I might be on crack here.
It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and
right channels of a stereo stream together, and clamps the new mono channel if
it would overflow.
Shouldn't it be dividing by 2 to average the two sample points instead of
clamping? Otherwise the mono sample point's volume doubles in the conversion.
This would also make the conversion faster, as it replaces two branches per
sample frame with a bitwise shift.
--ryan.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 24 Sep 2006 15:45:37 +0000 |
| parents | 2f381b48b05c |
| children | c121d94672cb 746aa4852f87 |
| 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 */ | |
| 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 Dual Strike USB version 1.0", 2, 1, 0 }, |
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54 { "WingMan Interceptor", 3, 3, 0 }, |
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55 { "WingMan Extreme Digital 3D", 4, 1, 0 }, |
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56 { "Microsoft SideWinder Precision 2 Joystick", 4, 1, 0 }, |
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57 { "Logitech Inc. WingMan Extreme Digital 3D", 4, 1, 0 }, |
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58 { "Saitek Saitek X45", 6, 1, 0 } |
| 0 | 59 }; |
| 60 | |
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61 #ifndef NO_LOGICAL_JOYSTICKS |
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62 |
| 1551 | 63 /* |
| 64 Some USB HIDs show up as a single joystick even though they actually | |
| 65 control 2 or more joysticks. | |
| 66 */ | |
| 67 /* | |
| 68 This code handles the MP-8800 (Quad) and MP-8866 (Dual), which can | |
| 69 be identified by their transparent blue design. It's quite trivial | |
| 70 to add other joysticks with similar quirky behavior. | |
| 71 -id | |
| 72 */ | |
| 73 | |
| 74 struct joystick_logical_mapping { | |
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75 int njoy; |
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76 int nthing; |
| 1551 | 77 }; |
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78 |
| 1551 | 79 /* |
| 80 {logical joy, logical axis}, | |
| 81 {logical joy, logical hat}, | |
| 82 {logical joy, logical ball}, | |
| 83 {logical joy, logical button} | |
| 84 */ | |
| 85 | |
| 86 static struct joystick_logical_mapping mp88xx_1_logical_axismap[] = { | |
| 87 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5} | |
| 88 }; | |
| 89 static struct joystick_logical_mapping mp88xx_1_logical_buttonmap[] = { | |
| 90 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11} | |
| 91 }; | |
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92 |
| 1551 | 93 static struct joystick_logical_mapping mp88xx_2_logical_axismap[] = { |
| 94 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 95 {1,2},{1,3},{0,4},{0,5},{1,4},{1,5} | |
| 96 }; | |
| 97 static struct joystick_logical_mapping mp88xx_2_logical_buttonmap[] = { | |
| 98 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, | |
| 99 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11} | |
| 100 }; | |
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101 |
| 1551 | 102 static struct joystick_logical_mapping mp88xx_3_logical_axismap[] = { |
| 103 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 104 {1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, | |
| 105 {0,4},{0,5},{1,4},{1,5},{2,4},{2,5} | |
| 106 }; | |
| 107 static struct joystick_logical_mapping mp88xx_3_logical_buttonmap[] = { | |
| 108 {0,0},{0,1},{0,2},{0,3},{0,4},{0,5},{0,6},{0,7},{0,8},{0,9},{0,10},{0,11}, | |
| 109 {1,0},{1,1},{1,2},{1,3},{1,4},{1,5},{1,6},{1,7},{1,8},{1,9},{1,10},{1,11}, | |
| 110 {2,0},{2,1},{2,2},{2,3},{2,4},{2,5},{2,6},{2,7},{2,8},{2,9},{2,10},{2,11} | |
| 111 }; | |
| 112 | |
| 113 static struct joystick_logical_mapping mp88xx_4_logical_axismap[] = { | |
| 114 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3}, | |
| 115 {1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, | |
| 116 {3,0},{3,1},{3,2},{3,3},{0,4},{0,5}, | |
| 117 {1,4},{1,5},{2,4},{2,5},{3,4},{3,5} | |
| 118 }; | |
| 119 static struct joystick_logical_mapping mp88xx_4_logical_buttonmap[] = { | |
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120 {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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121 {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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122 {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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123 {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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124 }; |
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125 |
| 1551 | 126 struct joystick_logical_layout { |
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127 int naxes; |
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128 int nhats; |
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129 int nballs; |
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130 int nbuttons; |
| 1551 | 131 }; |
| 132 | |
| 133 static struct joystick_logical_layout mp88xx_1_logical_layout[] = { | |
| 134 {6, 0, 0, 12} | |
| 135 }; | |
| 136 static struct joystick_logical_layout mp88xx_2_logical_layout[] = { | |
| 137 {6, 0, 0, 12}, | |
| 138 {6, 0, 0, 12} | |
| 139 }; | |
| 140 static struct joystick_logical_layout mp88xx_3_logical_layout[] = { | |
| 141 {6, 0, 0, 12}, | |
| 142 {6, 0, 0, 12}, | |
| 143 {6, 0, 0, 12} | |
| 144 }; | |
| 145 static struct joystick_logical_layout mp88xx_4_logical_layout[] = { | |
| 146 {6, 0, 0, 12}, | |
| 147 {6, 0, 0, 12}, | |
| 148 {6, 0, 0, 12}, | |
| 149 {6, 0, 0, 12} | |
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150 }; |
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151 |
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152 /* |
| 1551 | 153 This array sets up a means of mapping a single physical joystick to |
| 154 multiple logical joysticks. (djm) | |
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155 |
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156 njoys |
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157 the number of logical joysticks |
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158 |
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159 layouts |
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160 an array of layout structures, one to describe each logical joystick |
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161 |
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162 axes, hats, balls, buttons |
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163 arrays that map a physical thingy to a logical thingy |
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164 */ |
| 1551 | 165 struct joystick_logicalmap { |
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166 const char *name; |
| 1551 | 167 int nbuttons; |
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168 int njoys; |
| 1551 | 169 struct joystick_logical_layout *layout; |
| 170 struct joystick_logical_mapping *axismap; | |
| 171 struct joystick_logical_mapping *hatmap; | |
| 172 struct joystick_logical_mapping *ballmap; | |
| 173 struct joystick_logical_mapping *buttonmap; | |
| 174 }; | |
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175 |
| 1551 | 176 static struct joystick_logicalmap joystick_logicalmap[] = { |
| 177 { | |
| 178 "WiseGroup.,Ltd MP-8866 Dual USB Joypad", | |
| 179 12, | |
| 180 1, | |
| 181 mp88xx_1_logical_layout, | |
| 182 mp88xx_1_logical_axismap, | |
| 183 NULL, | |
| 184 NULL, | |
| 185 mp88xx_1_logical_buttonmap | |
| 186 }, | |
| 187 { | |
| 188 "WiseGroup.,Ltd MP-8866 Dual USB Joypad", | |
| 189 24, | |
| 190 2, | |
| 191 mp88xx_2_logical_layout, | |
| 192 mp88xx_2_logical_axismap, | |
| 193 NULL, | |
| 194 NULL, | |
| 195 mp88xx_2_logical_buttonmap | |
| 196 }, | |
| 197 { | |
| 198 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 199 12, | |
| 200 1, | |
| 201 mp88xx_1_logical_layout, | |
| 202 mp88xx_1_logical_axismap, | |
| 203 NULL, | |
| 204 NULL, | |
| 205 mp88xx_1_logical_buttonmap | |
| 206 }, | |
| 207 { | |
| 208 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 209 24, | |
| 210 2, | |
| 211 mp88xx_2_logical_layout, | |
| 212 mp88xx_2_logical_axismap, | |
| 213 NULL, | |
| 214 NULL, | |
| 215 mp88xx_2_logical_buttonmap | |
| 216 }, | |
| 217 { | |
| 218 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 219 36, | |
| 220 3, | |
| 221 mp88xx_3_logical_layout, | |
| 222 mp88xx_3_logical_axismap, | |
| 223 NULL, | |
| 224 NULL, | |
| 225 mp88xx_3_logical_buttonmap | |
| 226 }, | |
| 227 { | |
| 228 "WiseGroup.,Ltd MP-8800 Quad USB Joypad", | |
| 229 48, | |
| 230 4, | |
| 231 mp88xx_4_logical_layout, | |
| 232 mp88xx_4_logical_axismap, | |
| 233 NULL, | |
| 234 NULL, | |
| 235 mp88xx_4_logical_buttonmap | |
| 236 } | |
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237 }; |
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238 |
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239 /* find the head of a linked list, given a point in it |
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240 */ |
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241 #define SDL_joylist_head(i, start)\ |
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242 for(i = start; SDL_joylist[i].fname == NULL;) i = SDL_joylist[i].prev; |
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243 |
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244 #define SDL_logical_joydecl(d) d |
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245 |
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246 |
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247 #else |
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248 |
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249 #define SDL_logical_joydecl(d) |
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250 |
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251 #endif /* USE_LOGICAL_JOYSTICKS */ |
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252 |
| 0 | 253 /* The maximum number of joysticks we'll detect */ |
| 254 #define MAX_JOYSTICKS 32 | |
| 255 | |
| 256 /* A list of available joysticks */ | |
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257 static struct |
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258 { |
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259 char* fname; |
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260 #ifndef NO_LOGICAL_JOYSTICKS |
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261 SDL_Joystick* joy; |
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262 struct joystick_logicalmap* map; |
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263 int prev; |
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264 int next; |
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265 int logicalno; |
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266 #endif /* USE_LOGICAL_JOYSTICKS */ |
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267 } SDL_joylist[MAX_JOYSTICKS]; |
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268 |
| 0 | 269 |
| 270 /* The private structure used to keep track of a joystick */ | |
| 271 struct joystick_hwdata { | |
| 272 int fd; | |
| 273 /* The current linux joystick driver maps hats to two axes */ | |
| 274 struct hwdata_hat { | |
| 275 int axis[2]; | |
| 276 } *hats; | |
| 277 /* The current linux joystick driver maps balls to two axes */ | |
| 278 struct hwdata_ball { | |
| 279 int axis[2]; | |
| 280 } *balls; | |
| 281 | |
| 282 /* Support for the Linux 2.4 unified input interface */ | |
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283 #if SDL_INPUT_LINUXEV |
| 0 | 284 SDL_bool is_hid; |
| 285 Uint8 key_map[KEY_MAX-BTN_MISC]; | |
| 286 Uint8 abs_map[ABS_MAX]; | |
| 287 struct axis_correct { | |
| 288 int used; | |
| 289 int coef[3]; | |
| 290 } abs_correct[ABS_MAX]; | |
| 291 #endif | |
| 292 }; | |
| 293 | |
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294 |
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295 #ifndef NO_LOGICAL_JOYSTICKS |
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296 |
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297 static int CountLogicalJoysticks(int max) |
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298 { |
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299 register int i, j, k, ret, prev; |
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300 const char* name; |
| 1551 | 301 int nbuttons, fd; |
| 302 unsigned char n; | |
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303 |
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304 ret = 0; |
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305 |
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306 for(i = 0; i < max; i++) { |
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307 name = SDL_SYS_JoystickName(i); |
| 1551 | 308 |
| 309 fd = open(SDL_joylist[i].fname, O_RDONLY, 0); | |
| 310 if ( fd >= 0 ) { | |
| 311 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { | |
| 312 nbuttons = -1; | |
| 313 } else { | |
| 314 nbuttons = n; | |
| 315 } | |
| 316 close(fd); | |
| 317 } | |
| 318 else { | |
| 319 nbuttons=-1; | |
| 320 } | |
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321 |
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322 if (name) { |
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323 for(j = 0; j < SDL_arraysize(joystick_logicalmap); j++) { |
| 1551 | 324 if (!SDL_strcmp(name, joystick_logicalmap[j].name) && (nbuttons==-1 || nbuttons==joystick_logicalmap[j].nbuttons)) { |
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325 prev = i; |
| 1551 | 326 SDL_joylist[prev].map = &(joystick_logicalmap[j]); |
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327 |
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328 for(k = 1; k < joystick_logicalmap[j].njoys; k++) { |
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329 SDL_joylist[prev].next = max + ret; |
| 1551 | 330 SDL_joylist[max+ret].prev = prev; |
| 331 | |
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332 prev = max + ret; |
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333 SDL_joylist[prev].logicalno = k; |
| 1551 | 334 SDL_joylist[prev].map = &(joystick_logicalmap[j]); |
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335 ret++; |
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336 } |
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337 |
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338 break; |
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339 } |
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340 } |
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341 } |
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342 } |
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343 |
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344 return ret; |
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345 } |
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346 |
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347 static void LogicalSuffix(int logicalno, char* namebuf, int len) |
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348 { |
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349 register int slen; |
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350 const static char suffixs[] = |
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351 "01020304050607080910111213141516171819" |
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352 "20212223242526272829303132"; |
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353 const char* suffix; |
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354 slen = SDL_strlen(namebuf); |
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355 suffix = NULL; |
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356 |
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357 if (logicalno*2<sizeof(suffixs)) |
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358 suffix = suffixs + (logicalno*2); |
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359 |
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360 if (slen + 4 < len && suffix) { |
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361 namebuf[slen++] = ' '; |
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362 namebuf[slen++] = '#'; |
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363 namebuf[slen++] = suffix[0]; |
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364 namebuf[slen++] = suffix[1]; |
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365 namebuf[slen++] = 0; |
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366 } |
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367 } |
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368 |
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369 #endif /* USE_LOGICAL_JOYSTICKS */ |
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370 |
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371 #if SDL_INPUT_LINUXEV |
| 0 | 372 #define test_bit(nr, addr) \ |
| 373 (((1UL << ((nr) & 31)) & (((const unsigned int *) addr)[(nr) >> 5])) != 0) | |
| 374 | |
| 375 static int EV_IsJoystick(int fd) | |
| 376 { | |
| 377 unsigned long evbit[40]; | |
| 378 unsigned long keybit[40]; | |
| 379 unsigned long absbit[40]; | |
| 380 | |
| 381 if ( (ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) || | |
| 382 (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || | |
| 383 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0) ) { | |
| 384 return(0); | |
| 385 } | |
| 386 if (!(test_bit(EV_KEY, evbit) && test_bit(EV_ABS, evbit) && | |
| 387 test_bit(ABS_X, absbit) && test_bit(ABS_Y, absbit) && | |
| 388 (test_bit(BTN_TRIGGER, keybit) || test_bit(BTN_A, keybit) || test_bit(BTN_1, keybit)))) return 0; | |
| 389 return(1); | |
| 390 } | |
| 391 | |
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392 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 393 |
| 394 /* Function to scan the system for joysticks */ | |
| 395 int SDL_SYS_JoystickInit(void) | |
| 396 { | |
| 397 /* The base path of the joystick devices */ | |
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398 const char *joydev_pattern[] = { |
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399 #if SDL_INPUT_LINUXEV |
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400 "/dev/input/event%d", |
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401 #endif |
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402 "/dev/input/js%d", |
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403 "/dev/js%d" |
| 0 | 404 }; |
| 405 int numjoysticks; | |
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406 int i, j; |
| 0 | 407 int fd; |
| 408 char path[PATH_MAX]; | |
| 409 dev_t dev_nums[MAX_JOYSTICKS]; /* major/minor device numbers */ | |
| 410 struct stat sb; | |
| 411 int n, duplicate; | |
| 412 | |
| 413 numjoysticks = 0; | |
| 414 | |
| 415 /* First see if the user specified a joystick to use */ | |
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416 if ( SDL_getenv("SDL_JOYSTICK_DEVICE") != NULL ) { |
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417 SDL_strlcpy(path, SDL_getenv("SDL_JOYSTICK_DEVICE"), sizeof(path)); |
| 0 | 418 if ( stat(path, &sb) == 0 ) { |
| 419 fd = open(path, O_RDONLY, 0); | |
| 420 if ( fd >= 0 ) { | |
| 421 /* Assume the user knows what they're doing. */ | |
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422 SDL_joylist[numjoysticks].fname = SDL_strdup(path); |
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423 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 424 dev_nums[numjoysticks] = sb.st_rdev; |
| 425 ++numjoysticks; | |
| 426 } | |
| 427 close(fd); | |
| 428 } | |
| 429 } | |
| 430 } | |
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431 |
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432 for ( i=0; i<SDL_arraysize(joydev_pattern); ++i ) { |
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433 for ( j=0; j < MAX_JOYSTICKS; ++j ) { |
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434 SDL_snprintf(path, SDL_arraysize(path), joydev_pattern[i], j); |
| 0 | 435 |
| 436 /* rcg06302000 replaced access(F_OK) call with stat(). | |
| 437 * stat() will fail if the file doesn't exist, so it's | |
| 438 * equivalent behaviour. | |
| 439 */ | |
| 440 if ( stat(path, &sb) == 0 ) { | |
| 441 /* Check to make sure it's not already in list. | |
| 442 * This happens when we see a stick via symlink. | |
| 443 */ | |
| 444 duplicate = 0; | |
| 445 for (n=0; (n<numjoysticks) && !duplicate; ++n) { | |
| 446 if ( sb.st_rdev == dev_nums[n] ) { | |
| 447 duplicate = 1; | |
| 448 } | |
| 449 } | |
| 450 if (duplicate) { | |
| 451 continue; | |
| 452 } | |
| 453 | |
| 454 fd = open(path, O_RDONLY, 0); | |
| 455 if ( fd < 0 ) { | |
| 456 continue; | |
| 457 } | |
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458 #if SDL_INPUT_LINUXEV |
| 0 | 459 #ifdef DEBUG_INPUT_EVENTS |
| 460 printf("Checking %s\n", path); | |
| 461 #endif | |
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462 if ( (i == 0) && ! EV_IsJoystick(fd) ) { |
| 0 | 463 close(fd); |
| 464 continue; | |
| 465 } | |
| 466 #endif | |
| 467 close(fd); | |
| 468 | |
| 469 /* We're fine, add this joystick */ | |
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470 SDL_joylist[numjoysticks].fname = SDL_strdup(path); |
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471 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 472 dev_nums[numjoysticks] = sb.st_rdev; |
| 473 ++numjoysticks; | |
| 474 } | |
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475 } else |
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476 break; |
| 0 | 477 } |
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478 |
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479 #if SDL_INPUT_LINUXEV |
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480 /* This is a special case... |
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481 If the event devices are valid then the joystick devices |
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482 will be duplicates but without extra information about their |
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483 hats or balls. Unfortunately, the event devices can't |
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484 currently be calibrated, so it's a win-lose situation. |
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485 So : /dev/input/eventX = /dev/input/jsY = /dev/jsY |
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486 */ |
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487 if ( (i == 0) && (numjoysticks > 0) ) |
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488 break; |
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489 #endif |
| 0 | 490 } |
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491 #ifndef NO_LOGICAL_JOYSTICKS |
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492 numjoysticks += CountLogicalJoysticks(numjoysticks); |
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493 #endif |
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494 |
| 0 | 495 return(numjoysticks); |
| 496 } | |
| 497 | |
| 498 /* Function to get the device-dependent name of a joystick */ | |
| 499 const char *SDL_SYS_JoystickName(int index) | |
| 500 { | |
| 501 int fd; | |
| 502 static char namebuf[128]; | |
| 503 char *name; | |
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504 SDL_logical_joydecl(int oindex = index); |
| 0 | 505 |
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506 #ifndef NO_LOGICAL_JOYSTICKS |
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507 SDL_joylist_head(index, index); |
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508 #endif |
| 0 | 509 name = NULL; |
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510 fd = open(SDL_joylist[index].fname, O_RDONLY, 0); |
| 0 | 511 if ( fd >= 0 ) { |
| 512 if ( | |
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513 #if SDL_INPUT_LINUXEV |
| 0 | 514 (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) && |
| 515 #endif | |
| 516 (ioctl(fd, JSIOCGNAME(sizeof(namebuf)), namebuf) <= 0) ) { | |
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517 name = SDL_joylist[index].fname; |
| 0 | 518 } else { |
| 519 name = namebuf; | |
| 520 } | |
| 521 close(fd); | |
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522 |
| 1551 | 523 |
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524 #ifndef NO_LOGICAL_JOYSTICKS |
| 1551 | 525 if (SDL_joylist[oindex].prev || SDL_joylist[oindex].next || index!=oindex) |
| 526 { | |
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527 LogicalSuffix(SDL_joylist[oindex].logicalno, namebuf, 128); |
| 1551 | 528 } |
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529 #endif |
| 0 | 530 } |
| 531 return name; | |
| 532 } | |
| 533 | |
| 534 static int allocate_hatdata(SDL_Joystick *joystick) | |
| 535 { | |
| 536 int i; | |
| 537 | |
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538 joystick->hwdata->hats = (struct hwdata_hat *)SDL_malloc( |
| 0 | 539 joystick->nhats * sizeof(struct hwdata_hat)); |
| 540 if ( joystick->hwdata->hats == NULL ) { | |
| 541 return(-1); | |
| 542 } | |
| 543 for ( i=0; i<joystick->nhats; ++i ) { | |
| 544 joystick->hwdata->hats[i].axis[0] = 1; | |
| 545 joystick->hwdata->hats[i].axis[1] = 1; | |
| 546 } | |
| 547 return(0); | |
| 548 } | |
| 549 | |
| 550 static int allocate_balldata(SDL_Joystick *joystick) | |
| 551 { | |
| 552 int i; | |
| 553 | |
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554 joystick->hwdata->balls = (struct hwdata_ball *)SDL_malloc( |
| 0 | 555 joystick->nballs * sizeof(struct hwdata_ball)); |
| 556 if ( joystick->hwdata->balls == NULL ) { | |
| 557 return(-1); | |
| 558 } | |
| 559 for ( i=0; i<joystick->nballs; ++i ) { | |
| 560 joystick->hwdata->balls[i].axis[0] = 0; | |
| 561 joystick->hwdata->balls[i].axis[1] = 0; | |
| 562 } | |
| 563 return(0); | |
| 564 } | |
| 565 | |
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566 static SDL_bool JS_ConfigJoystick(SDL_Joystick *joystick, int fd) |
| 0 | 567 { |
| 568 SDL_bool handled; | |
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569 unsigned char n; |
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570 int old_axes, tmp_naxes, tmp_nhats, tmp_nballs; |
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571 const char *name; |
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572 char *env, env_name[128]; |
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573 int i; |
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574 |
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575 handled = SDL_FALSE; |
| 0 | 576 |
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577 /* Default joystick device settings */ |
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578 if ( ioctl(fd, JSIOCGAXES, &n) < 0 ) { |
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579 joystick->naxes = 2; |
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580 } else { |
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581 joystick->naxes = n; |
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582 } |
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583 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { |
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584 joystick->nbuttons = 2; |
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585 } else { |
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586 joystick->nbuttons = n; |
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587 } |
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588 |
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589 name = SDL_SYS_JoystickName(joystick->index); |
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590 old_axes = joystick->naxes; |
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591 |
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592 /* Generic analog joystick support */ |
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593 if ( SDL_strstr(name, "Analog") == name && SDL_strstr(name, "-hat") ) { |
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594 if ( SDL_sscanf(name,"Analog %d-axis %*d-button %d-hat", |
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595 &tmp_naxes, &tmp_nhats) == 2 ) { |
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596 |
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597 joystick->naxes = tmp_naxes; |
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598 joystick->nhats = tmp_nhats; |
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599 |
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600 handled = SDL_TRUE; |
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601 } |
| 0 | 602 } |
|
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603 |
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604 /* Special joystick support */ |
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605 for ( i=0; i < SDL_arraysize(special_joysticks); ++i ) { |
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606 if ( SDL_strcmp(name, special_joysticks[i].name) == 0 ) { |
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607 |
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608 joystick->naxes = special_joysticks[i].naxes; |
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609 joystick->nhats = special_joysticks[i].nhats; |
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610 joystick->nballs = special_joysticks[i].nballs; |
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611 |
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612 handled = SDL_TRUE; |
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613 break; |
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614 } |
| 0 | 615 } |
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616 |
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617 /* User environment joystick support */ |
|
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618 if ( (env = SDL_getenv("SDL_LINUX_JOYSTICK")) ) { |
|
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619 *env_name = '\0'; |
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620 if ( *env == '\'' && SDL_sscanf(env, "'%[^']s'", env_name) == 1 ) |
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621 env += SDL_strlen(env_name)+2; |
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622 else if ( SDL_sscanf(env, "%s", env_name) == 1 ) |
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623 env += SDL_strlen(env_name); |
|
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624 |
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625 if ( SDL_strcmp(name, env_name) == 0 ) { |
| 0 | 626 |
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627 if ( SDL_sscanf(env, "%d %d %d", &tmp_naxes, &tmp_nhats, |
|
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628 &tmp_nballs) == 3 ) { |
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629 |
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630 joystick->naxes = tmp_naxes; |
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631 joystick->nhats = tmp_nhats; |
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632 joystick->nballs = tmp_nballs; |
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633 |
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634 handled = SDL_TRUE; |
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635 } |
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636 } |
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637 } |
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638 |
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639 /* Remap hats and balls */ |
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640 if (handled) { |
| 0 | 641 if ( joystick->nhats > 0 ) { |
|
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642 if ( allocate_hatdata(joystick) < 0 ) { |
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643 joystick->nhats = 0; |
| 0 | 644 } |
| 645 } | |
| 646 if ( joystick->nballs > 0 ) { | |
| 647 if ( allocate_balldata(joystick) < 0 ) { | |
| 648 joystick->nballs = 0; | |
| 649 } | |
| 650 } | |
| 651 } | |
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652 |
| 0 | 653 return(handled); |
| 654 } | |
| 655 | |
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656 #if SDL_INPUT_LINUXEV |
| 0 | 657 |
| 658 static SDL_bool EV_ConfigJoystick(SDL_Joystick *joystick, int fd) | |
| 659 { | |
| 871 | 660 int i, t; |
| 0 | 661 unsigned long keybit[40]; |
| 662 unsigned long absbit[40]; | |
| 663 unsigned long relbit[40]; | |
| 664 | |
| 665 /* See if this device uses the new unified event API */ | |
| 666 if ( (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) >= 0) && | |
| 667 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) >= 0) && | |
| 668 (ioctl(fd, EVIOCGBIT(EV_REL, sizeof(relbit)), relbit) >= 0) ) { | |
| 669 joystick->hwdata->is_hid = SDL_TRUE; | |
| 670 | |
| 671 /* Get the number of buttons, axes, and other thingamajigs */ | |
| 672 for ( i=BTN_JOYSTICK; i < KEY_MAX; ++i ) { | |
| 673 if ( test_bit(i, keybit) ) { | |
| 674 #ifdef DEBUG_INPUT_EVENTS | |
| 675 printf("Joystick has button: 0x%x\n", i); | |
| 676 #endif | |
| 677 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 678 joystick->nbuttons; | |
| 679 ++joystick->nbuttons; | |
| 680 } | |
| 681 } | |
| 682 for ( i=BTN_MISC; i < BTN_JOYSTICK; ++i ) { | |
| 683 if ( test_bit(i, keybit) ) { | |
| 684 #ifdef DEBUG_INPUT_EVENTS | |
| 685 printf("Joystick has button: 0x%x\n", i); | |
| 686 #endif | |
| 687 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 688 joystick->nbuttons; | |
| 689 ++joystick->nbuttons; | |
| 690 } | |
| 691 } | |
| 692 for ( i=0; i<ABS_MAX; ++i ) { | |
| 693 /* Skip hats */ | |
| 694 if ( i == ABS_HAT0X ) { | |
| 695 i = ABS_HAT3Y; | |
| 696 continue; | |
| 697 } | |
| 698 if ( test_bit(i, absbit) ) { | |
| 699 int values[5]; | |
| 700 | |
|
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701 if ( ioctl(fd, EVIOCGABS(i), values) < 0 ) |
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702 continue; |
| 0 | 703 #ifdef DEBUG_INPUT_EVENTS |
| 704 printf("Joystick has absolute axis: %x\n", i); | |
| 705 printf("Values = { %d, %d, %d, %d, %d }\n", | |
| 706 values[0], values[1], | |
| 707 values[2], values[3], values[4]); | |
| 708 #endif /* DEBUG_INPUT_EVENTS */ | |
| 709 joystick->hwdata->abs_map[i] = joystick->naxes; | |
| 710 if ( values[1] == values[2] ) { | |
| 711 joystick->hwdata->abs_correct[i].used = 0; | |
| 712 } else { | |
| 713 joystick->hwdata->abs_correct[i].used = 1; | |
|
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714 joystick->hwdata->abs_correct[i].coef[0] = |
|
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715 (values[2] + values[1]) / 2 - values[4]; |
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716 joystick->hwdata->abs_correct[i].coef[1] = |
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717 (values[2] + values[1]) / 2 + values[4]; |
| 871 | 718 t = ((values[2] - values[1]) / 2 - 2 * values[4]); |
| 719 if ( t != 0 ) { | |
| 720 joystick->hwdata->abs_correct[i].coef[2] = (1 << 29) / t; | |
|
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721 } else { |
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722 joystick->hwdata->abs_correct[i].coef[2] = 0; |
| 871 | 723 } |
| 0 | 724 } |
| 725 ++joystick->naxes; | |
| 726 } | |
| 727 } | |
| 728 for ( i=ABS_HAT0X; i <= ABS_HAT3Y; i += 2 ) { | |
| 729 if ( test_bit(i, absbit) || test_bit(i+1, absbit) ) { | |
| 730 #ifdef DEBUG_INPUT_EVENTS | |
| 731 printf("Joystick has hat %d\n",(i-ABS_HAT0X)/2); | |
| 732 #endif | |
| 733 ++joystick->nhats; | |
| 734 } | |
| 735 } | |
| 736 if ( test_bit(REL_X, relbit) || test_bit(REL_Y, relbit) ) { | |
| 737 ++joystick->nballs; | |
| 738 } | |
| 739 | |
| 740 /* Allocate data to keep track of these thingamajigs */ | |
| 741 if ( joystick->nhats > 0 ) { | |
| 742 if ( allocate_hatdata(joystick) < 0 ) { | |
| 743 joystick->nhats = 0; | |
| 744 } | |
| 745 } | |
| 746 if ( joystick->nballs > 0 ) { | |
| 747 if ( allocate_balldata(joystick) < 0 ) { | |
| 748 joystick->nballs = 0; | |
| 749 } | |
| 750 } | |
| 751 } | |
| 752 return(joystick->hwdata->is_hid); | |
| 753 } | |
| 754 | |
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755 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 756 |
|
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757 #ifndef NO_LOGICAL_JOYSTICKS |
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758 static void ConfigLogicalJoystick(SDL_Joystick *joystick) |
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759 { |
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760 struct joystick_logical_layout* layout; |
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761 |
| 1551 | 762 layout = SDL_joylist[joystick->index].map->layout + |
|
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763 SDL_joylist[joystick->index].logicalno; |
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764 |
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765 joystick->nbuttons = layout->nbuttons; |
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766 joystick->nhats = layout->nhats; |
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767 joystick->naxes = layout->naxes; |
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768 joystick->nballs = layout->nballs; |
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769 } |
|
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770 #endif |
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771 |
|
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|
772 |
| 0 | 773 /* Function to open a joystick for use. |
| 774 The joystick to open is specified by the index field of the joystick. | |
| 775 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 776 It returns 0, or -1 if there is an error. | |
| 777 */ | |
| 778 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 779 { | |
| 780 int fd; | |
|
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|
781 SDL_logical_joydecl(int realindex); |
|
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782 SDL_logical_joydecl(SDL_Joystick *realjoy = NULL); |
| 0 | 783 |
| 784 /* Open the joystick and set the joystick file descriptor */ | |
|
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785 #ifndef NO_LOGICAL_JOYSTICKS |
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786 if (SDL_joylist[joystick->index].fname == NULL) { |
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787 SDL_joylist_head(realindex, joystick->index); |
|
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788 realjoy = SDL_JoystickOpen(realindex); |
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789 |
|
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|
790 if (realjoy == NULL) |
|
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|
791 return(-1); |
|
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changeset
|
792 |
|
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793 fd = realjoy->hwdata->fd; |
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794 |
|
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|
795 } else { |
|
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|
796 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
|
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797 } |
|
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798 SDL_joylist[joystick->index].joy = joystick; |
|
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799 #else |
|
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800 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
|
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801 #endif |
|
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|
802 |
| 0 | 803 if ( fd < 0 ) { |
| 804 SDL_SetError("Unable to open %s\n", | |
| 805 SDL_joylist[joystick->index]); | |
| 806 return(-1); | |
| 807 } | |
| 808 joystick->hwdata = (struct joystick_hwdata *) | |
|
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|
809 SDL_malloc(sizeof(*joystick->hwdata)); |
| 0 | 810 if ( joystick->hwdata == NULL ) { |
| 811 SDL_OutOfMemory(); | |
| 812 close(fd); | |
| 813 return(-1); | |
| 814 } | |
|
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|
815 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
| 0 | 816 joystick->hwdata->fd = fd; |
| 817 | |
| 818 /* Set the joystick to non-blocking read mode */ | |
| 819 fcntl(fd, F_SETFL, O_NONBLOCK); | |
| 820 | |
| 821 /* Get the number of buttons and axes on the joystick */ | |
|
892
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822 #ifndef NO_LOGICAL_JOYSTICKS |
|
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823 if (realjoy) |
|
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|
824 ConfigLogicalJoystick(joystick); |
|
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825 else |
|
dc29e5907694
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826 #endif |
|
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|
827 #if SDL_INPUT_LINUXEV |
| 0 | 828 if ( ! EV_ConfigJoystick(joystick, fd) ) |
| 829 #endif | |
|
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|
830 JS_ConfigJoystick(joystick, fd); |
|
38b1a98aeb11
Linux joystick cleanups from Alan Swanson
Sam Lantinga <slouken@libsdl.org>
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|
831 |
| 0 | 832 return(0); |
| 833 } | |
| 834 | |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
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changeset
|
835 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
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diff
changeset
|
836 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
837 static SDL_Joystick* FindLogicalJoystick( |
| 1551 | 838 SDL_Joystick *joystick, struct joystick_logical_mapping* v) |
|
892
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
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parents:
872
diff
changeset
|
839 { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
840 SDL_Joystick *logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
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changeset
|
841 register int i; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
842 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
843 i = joystick->index; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
844 logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
845 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
846 /* 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:
872
diff
changeset
|
847 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
848 for(;;) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
849 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
850 if (SDL_joylist[i].logicalno == v->njoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
851 logicaljoy = SDL_joylist[i].joy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
852 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
853 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
854 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
855 if (SDL_joylist[i].next == 0) |
|
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>
parents:
872
diff
changeset
|
857 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
858 i = SDL_joylist[i].next; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
859 |
|
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 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
862 return logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
863 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
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 static int LogicalJoystickButton( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
866 SDL_Joystick *joystick, Uint8 button, Uint8 state){ |
| 1551 | 867 struct joystick_logical_mapping* buttons; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
868 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
869 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
870 /* 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:
872
diff
changeset
|
871 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
872 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
|
873 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
874 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
875 /* 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:
872
diff
changeset
|
876 */ |
| 1551 | 877 buttons = SDL_joylist[joystick->index].map->buttonmap+button; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
878 logicaljoy = FindLogicalJoystick(joystick, buttons); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
879 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
880 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
881 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
882 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
883 SDL_PrivateJoystickButton(logicaljoy, buttons->nthing, state); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
884 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
885 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
886 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
887 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
888 static int LogicalJoystickAxis( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
889 SDL_Joystick *joystick, Uint8 axis, Sint16 value) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
890 { |
| 1551 | 891 struct joystick_logical_mapping* axes; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
892 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
893 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
894 /* 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:
872
diff
changeset
|
895 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
896 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
|
897 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
898 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
899 /* 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:
872
diff
changeset
|
900 */ |
| 1551 | 901 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:
872
diff
changeset
|
902 logicaljoy = FindLogicalJoystick(joystick, axes); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
903 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
904 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
905 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
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 SDL_PrivateJoystickAxis(logicaljoy, axes->nthing, value); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
908 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
909 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
910 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
911 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
912 |
| 0 | 913 static __inline__ |
| 914 void HandleHat(SDL_Joystick *stick, Uint8 hat, int axis, int value) | |
| 915 { | |
| 916 struct hwdata_hat *the_hat; | |
| 917 const Uint8 position_map[3][3] = { | |
| 918 { SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP }, | |
| 919 { SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT }, | |
| 920 { SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN } | |
| 921 }; | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
922 SDL_logical_joydecl(SDL_Joystick *logicaljoy = NULL); |
| 1551 | 923 SDL_logical_joydecl(struct joystick_logical_mapping* hats = NULL); |
| 0 | 924 |
| 925 the_hat = &stick->hwdata->hats[hat]; | |
| 926 if ( value < 0 ) { | |
| 927 value = 0; | |
| 928 } else | |
| 929 if ( value == 0 ) { | |
| 930 value = 1; | |
| 931 } else | |
| 932 if ( value > 0 ) { | |
| 933 value = 2; | |
| 934 } | |
| 935 if ( value != the_hat->axis[axis] ) { | |
| 936 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
|
937 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
938 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
939 /* 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:
872
diff
changeset
|
940 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
941 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
|
942 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
943 /* 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:
872
diff
changeset
|
944 */ |
| 1551 | 945 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
|
946 logicaljoy = FindLogicalJoystick(stick, hats); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
947 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
948 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
949 if (logicaljoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
950 stick = logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
951 hat = hats->nthing; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
952 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
953 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
954 |
| 0 | 955 SDL_PrivateJoystickHat(stick, hat, |
| 956 position_map[the_hat->axis[1]][the_hat->axis[0]]); | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 static __inline__ | |
| 961 void HandleBall(SDL_Joystick *stick, Uint8 ball, int axis, int value) | |
| 962 { | |
| 963 stick->hwdata->balls[ball].axis[axis] += value; | |
| 964 } | |
| 965 | |
| 966 /* Function to update the state of a joystick - called as a device poll. | |
| 967 * This function shouldn't update the joystick structure directly, | |
| 968 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 969 * and update joystick device state. | |
| 970 */ | |
| 971 static __inline__ void JS_HandleEvents(SDL_Joystick *joystick) | |
| 972 { | |
| 973 struct js_event events[32]; | |
| 974 int i, len; | |
| 975 Uint8 other_axis; | |
| 976 | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
977 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
978 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
|
979 SDL_joylist_head(i, joystick->index); |
|
1752
97f20f2a1d85
SDL_sysjoystick.c:983: warning: 'return' with a value, in function returning void
Sam Lantinga <slouken@libsdl.org>
parents:
1635
diff
changeset
|
980 JS_HandleEvents(SDL_joylist[i].joy); |
|
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981 return; |
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982 } |
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983 #endif |
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984 |
| 0 | 985 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 986 len /= sizeof(events[0]); | |
| 987 for ( i=0; i<len; ++i ) { | |
| 988 switch (events[i].type & ~JS_EVENT_INIT) { | |
| 989 case JS_EVENT_AXIS: | |
| 990 if ( events[i].number < joystick->naxes ) { | |
|
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991 #ifndef NO_LOGICAL_JOYSTICKS |
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992 if (!LogicalJoystickAxis(joystick, |
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993 events[i].number, events[i].value)) |
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994 #endif |
| 0 | 995 SDL_PrivateJoystickAxis(joystick, |
| 996 events[i].number, events[i].value); | |
| 997 break; | |
| 998 } | |
| 999 events[i].number -= joystick->naxes; | |
|
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1000 other_axis = (events[i].number / 2); |
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1001 if ( other_axis < joystick->nhats ) { |
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1002 HandleHat(joystick, other_axis, |
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1003 events[i].number%2, |
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1004 events[i].value); |
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1005 break; |
| 0 | 1006 } |
| 1007 events[i].number -= joystick->nhats*2; | |
| 1008 other_axis = (events[i].number / 2); | |
| 1009 if ( other_axis < joystick->nballs ) { | |
| 1010 HandleBall(joystick, other_axis, | |
| 1011 events[i].number%2, | |
| 1012 events[i].value); | |
| 1013 break; | |
| 1014 } | |
| 1015 break; | |
| 1016 case JS_EVENT_BUTTON: | |
|
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1017 #ifndef NO_LOGICAL_JOYSTICKS |
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1018 if (!LogicalJoystickButton(joystick, |
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1019 events[i].number, events[i].value)) |
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1020 #endif |
| 0 | 1021 SDL_PrivateJoystickButton(joystick, |
| 1022 events[i].number, events[i].value); | |
| 1023 break; | |
| 1024 default: | |
| 1025 /* ?? */ | |
| 1026 break; | |
| 1027 } | |
| 1028 } | |
| 1029 } | |
| 1030 } | |
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1031 #if SDL_INPUT_LINUXEV |
| 0 | 1032 static __inline__ int EV_AxisCorrect(SDL_Joystick *joystick, int which, int value) |
| 1033 { | |
| 1034 struct axis_correct *correct; | |
| 1035 | |
| 1036 correct = &joystick->hwdata->abs_correct[which]; | |
| 1037 if ( correct->used ) { | |
| 1038 if ( value > correct->coef[0] ) { | |
| 1039 if ( value < correct->coef[1] ) { | |
| 1040 return 0; | |
| 1041 } | |
| 1042 value -= correct->coef[1]; | |
| 1043 } else { | |
| 1044 value -= correct->coef[0]; | |
| 1045 } | |
| 1046 value *= correct->coef[2]; | |
| 1047 value >>= 14; | |
| 1048 } | |
|
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1049 |
| 0 | 1050 /* Clamp and return */ |
| 1275 | 1051 if ( value < -32768 ) return -32768; |
|
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1052 if ( value > 32767 ) return 32767; |
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1053 |
| 0 | 1054 return value; |
| 1055 } | |
| 1056 | |
| 1057 static __inline__ void EV_HandleEvents(SDL_Joystick *joystick) | |
| 1058 { | |
| 1059 struct input_event events[32]; | |
| 1060 int i, len; | |
| 1061 int code; | |
| 1062 | |
|
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1063 #ifndef NO_LOGICAL_JOYSTICKS |
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1064 if (SDL_joylist[joystick->index].fname == NULL) { |
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1065 SDL_joylist_head(i, joystick->index); |
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1066 return EV_HandleEvents(SDL_joylist[i].joy); |
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1067 } |
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1068 #endif |
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1069 |
| 0 | 1070 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 1071 len /= sizeof(events[0]); | |
| 1072 for ( i=0; i<len; ++i ) { | |
| 1073 code = events[i].code; | |
| 1074 switch (events[i].type) { | |
| 1075 case EV_KEY: | |
| 1076 if ( code >= BTN_MISC ) { | |
| 1077 code -= BTN_MISC; | |
|
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1078 #ifndef NO_LOGICAL_JOYSTICKS |
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1079 if (!LogicalJoystickButton(joystick, |
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1080 joystick->hwdata->key_map[code], |
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1081 events[i].value)) |
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1082 #endif |
| 0 | 1083 SDL_PrivateJoystickButton(joystick, |
| 1084 joystick->hwdata->key_map[code], | |
| 1085 events[i].value); | |
| 1086 } | |
| 1087 break; | |
| 1088 case EV_ABS: | |
| 1089 switch (code) { | |
| 1090 case ABS_HAT0X: | |
| 1091 case ABS_HAT0Y: | |
| 1092 case ABS_HAT1X: | |
| 1093 case ABS_HAT1Y: | |
| 1094 case ABS_HAT2X: | |
| 1095 case ABS_HAT2Y: | |
| 1096 case ABS_HAT3X: | |
| 1097 case ABS_HAT3Y: | |
| 1098 code -= ABS_HAT0X; | |
| 1099 HandleHat(joystick, code/2, code%2, | |
| 1100 events[i].value); | |
| 1101 break; | |
| 1102 default: | |
| 1103 events[i].value = EV_AxisCorrect(joystick, code, events[i].value); | |
|
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1104 #ifndef NO_LOGICAL_JOYSTICKS |
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1105 if (!LogicalJoystickAxis(joystick, |
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1106 joystick->hwdata->abs_map[code], |
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1107 events[i].value)) |
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1108 #endif |
| 0 | 1109 SDL_PrivateJoystickAxis(joystick, |
| 1110 joystick->hwdata->abs_map[code], | |
| 1111 events[i].value); | |
| 1112 break; | |
| 1113 } | |
| 1114 break; | |
| 1115 case EV_REL: | |
| 1116 switch (code) { | |
| 1117 case REL_X: | |
| 1118 case REL_Y: | |
| 1119 code -= REL_X; | |
| 1120 HandleBall(joystick, code/2, code%2, | |
| 1121 events[i].value); | |
| 1122 break; | |
| 1123 default: | |
| 1124 break; | |
| 1125 } | |
| 1126 break; | |
| 1127 default: | |
| 1128 break; | |
| 1129 } | |
| 1130 } | |
| 1131 } | |
| 1132 } | |
|
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1133 #endif /* SDL_INPUT_LINUXEV */ |
| 0 | 1134 |
| 1135 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 1136 { | |
| 1137 int i; | |
| 1138 | |
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1139 #if SDL_INPUT_LINUXEV |
| 0 | 1140 if ( joystick->hwdata->is_hid ) |
| 1141 EV_HandleEvents(joystick); | |
| 1142 else | |
| 1143 #endif | |
| 1144 JS_HandleEvents(joystick); | |
| 1145 | |
| 1146 /* Deliver ball motion updates */ | |
| 1147 for ( i=0; i<joystick->nballs; ++i ) { | |
| 1148 int xrel, yrel; | |
| 1149 | |
| 1150 xrel = joystick->hwdata->balls[i].axis[0]; | |
| 1151 yrel = joystick->hwdata->balls[i].axis[1]; | |
| 1152 if ( xrel || yrel ) { | |
| 1153 joystick->hwdata->balls[i].axis[0] = 0; | |
| 1154 joystick->hwdata->balls[i].axis[1] = 0; | |
| 1155 SDL_PrivateJoystickBall(joystick, (Uint8)i, xrel, yrel); | |
| 1156 } | |
| 1157 } | |
| 1158 } | |
| 1159 | |
| 1160 /* Function to close a joystick after use */ | |
| 1161 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 1162 { | |
|
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1163 #ifndef NO_LOGICAL_JOYSTICKS |
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1164 register int i; |
|
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1165 if (SDL_joylist[joystick->index].fname == NULL) { |
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1166 SDL_joylist_head(i, joystick->index); |
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1167 SDL_JoystickClose(SDL_joylist[i].joy); |
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1168 } |
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1169 #endif |
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1170 |
| 0 | 1171 if ( joystick->hwdata ) { |
|
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1172 #ifndef NO_LOGICAL_JOYSTICKS |
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1173 if (SDL_joylist[joystick->index].fname != NULL) |
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1174 #endif |
| 0 | 1175 close(joystick->hwdata->fd); |
| 1176 if ( joystick->hwdata->hats ) { | |
|
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1177 SDL_free(joystick->hwdata->hats); |
| 0 | 1178 } |
| 1179 if ( joystick->hwdata->balls ) { | |
|
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1180 SDL_free(joystick->hwdata->balls); |
| 0 | 1181 } |
|
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1182 SDL_free(joystick->hwdata); |
| 0 | 1183 joystick->hwdata = NULL; |
| 1184 } | |
| 1185 } | |
| 1186 | |
| 1187 /* Function to perform any system-specific joystick related cleanup */ | |
| 1188 void SDL_SYS_JoystickQuit(void) | |
| 1189 { | |
| 1190 int i; | |
| 1191 | |
|
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1192 for ( i=0; SDL_joylist[i].fname; ++i ) { |
|
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1193 SDL_free(SDL_joylist[i].fname); |
| 0 | 1194 } |
|
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1195 SDL_joylist[0].fname = NULL; |
| 0 | 1196 } |
| 1197 | |
|
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1198 #endif /* SDL_JOYSTICK_LINUX */ |