Mercurial > sdl-ios-xcode
annotate src/joystick/linux/SDL_sysjoystick.c @ 896:b56dc586a5ef
Date: Tue, 16 Mar 2004 12:40:33 +0000
From: Alan Swanson
Subject: [SDL] [PATCH] Linux joystick evdev axis count fix
The event device configuration under Linux does not check the returned
ioctl value when reading the axis information. This means extra
undefined axes are returned.
Note, in EV_HandleEvents, the default for case EV_ABS is to return any
axis information which is fine as we have already checked for all valid
absolute axes. No new axes should be returned after opening the device.
(Unless, of course, the evdev allows closing and reassigning a new
device while in use and I can't believe that happens.)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 16 May 2004 22:48:06 +0000 |
| parents | dc29e5907694 |
| children | bbf8dcc8aed6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* This is the system specific header for the SDL joystick API */ | |
| 29 | |
| 30 #include <stdio.h> /* For the definition of NULL */ | |
| 31 #include <stdlib.h> /* For getenv() prototype */ | |
| 32 #include <string.h> | |
| 33 #include <sys/stat.h> | |
| 34 #include <unistd.h> | |
| 35 #include <fcntl.h> | |
| 36 #include <sys/ioctl.h> | |
| 37 #include <limits.h> /* For the definition of PATH_MAX */ | |
|
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38 #ifdef __arm__ |
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39 #include <linux/limits.h> /* Arm cross-compiler needs this */ |
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40 #endif |
| 0 | 41 #include <linux/joystick.h> |
| 42 #ifdef USE_INPUT_EVENTS | |
| 43 #include <linux/input.h> | |
| 44 #endif | |
| 45 | |
| 46 #include "SDL_error.h" | |
| 47 #include "SDL_joystick.h" | |
| 48 #include "SDL_sysjoystick.h" | |
| 49 #include "SDL_joystick_c.h" | |
| 50 | |
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51 /* Special joystick configurations */ |
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52 static struct { |
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53 const char *name; |
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54 int naxes; |
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55 int nhats; |
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56 int nballs; |
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57 } special_joysticks[] = { |
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58 { "MadCatz Panther XL", 3, 2, 1 }, /* We don't handle rudder (axis 8) */ |
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59 { "SideWinder Precision Pro", 4, 1, 0 }, |
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60 { "SideWinder 3D Pro", 4, 1, 0 }, |
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61 { "Microsoft SideWinder 3D Pro", 4, 1, 0 }, |
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62 { "Microsoft SideWinder Dual Strike USB version 1.0", 2, 1, 0 }, |
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63 { "WingMan Interceptor", 3, 3, 0 }, |
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64 { "WingMan Extreme Digital 3D", 4, 1, 0 }, |
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65 { "Microsoft SideWinder Precision 2 Joystick", 4, 1, 0 }, |
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66 { "Logitech Inc. WingMan Extreme Digital 3D", 4, 1, 0 }, |
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67 { "Saitek Saitek X45", 6, 1, 0 } |
| 0 | 68 }; |
| 69 | |
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70 #ifndef NO_LOGICAL_JOYSTICKS |
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71 |
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72 static struct joystick_logical_values { |
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73 int njoy; |
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74 int nthing; |
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75 } joystick_logical_values[] = { |
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76 |
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77 /* +0 */ |
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78 /* MP-8800 axes map - map to {logical joystick #, logical axis #} */ |
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79 {0,0},{0,1},{0,2},{1,0},{1,1},{0,3},{1,2},{1,3},{2,0},{2,1},{2,2},{2,3}, |
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80 {3,0},{3,1},{3,2},{3,3},{0,4},{1,4},{2,4}, |
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81 |
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82 /* +19 */ |
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83 /* MP-8800 hat map - map to {logical joystick #, logical hat #} */ |
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84 {0,0},{1,0},{2,0},{3,0}, |
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85 |
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86 /* +23 */ |
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87 /* MP-8800 button map - map to {logical joystick #, logical button #} */ |
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88 {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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89 {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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90 {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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91 {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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92 }; |
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93 |
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94 static struct joystick_logical_layout { |
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95 int naxes; |
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96 int nhats; |
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97 int nballs; |
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98 int nbuttons; |
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99 } joystick_logical_layout[] = { |
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100 /* MP-8800 logical layout */ |
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101 {5, 1, 0, 12}, |
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102 {5, 1, 0, 12}, |
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103 {5, 1, 0, 12}, |
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104 {4, 1, 0, 12} |
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105 }; |
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106 |
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107 /* |
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108 Some USB HIDs show up as a single joystick even though they actually |
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109 control 2 or more joysticks. This array sets up a means of mapping |
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110 a single physical joystick to multiple logical joysticks. (djm) |
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111 |
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112 njoys |
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113 the number of logical joysticks |
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114 |
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115 layouts |
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116 an array of layout structures, one to describe each logical joystick |
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117 |
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118 axes, hats, balls, buttons |
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119 arrays that map a physical thingy to a logical thingy |
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120 */ |
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121 static struct joystick_logicalmap { |
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122 const char *name; |
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123 int njoys; |
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124 struct joystick_logical_layout *layouts; |
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125 struct joystick_logical_values *axes; |
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126 struct joystick_logical_values *hats; |
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127 struct joystick_logical_values *balls; |
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128 struct joystick_logical_values *buttons; |
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129 |
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130 } joystick_logicalmap[] = { |
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131 {"WiseGroup.,Ltd MP-8800 Quad USB Joypad", 4, joystick_logical_layout, |
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132 joystick_logical_values, joystick_logical_values+19, NULL, |
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133 joystick_logical_values+23} |
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134 }; |
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135 |
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136 /* find the head of a linked list, given a point in it |
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137 */ |
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138 #define SDL_joylist_head(i, start)\ |
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139 for(i = start; SDL_joylist[i].fname == NULL;) i = SDL_joylist[i].prev; |
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140 |
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141 #define SDL_logical_joydecl(d) d |
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142 |
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143 |
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144 #else |
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145 |
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146 #define SDL_logical_joydecl(d) |
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147 |
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148 #endif /* USE_LOGICAL_JOYSTICKS */ |
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149 |
| 0 | 150 /* The maximum number of joysticks we'll detect */ |
| 151 #define MAX_JOYSTICKS 32 | |
| 152 | |
| 153 /* A list of available joysticks */ | |
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154 static struct |
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155 { |
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156 char* fname; |
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157 #ifndef NO_LOGICAL_JOYSTICKS |
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158 SDL_Joystick* joy; |
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159 struct joystick_logicalmap* map; |
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160 int prev; |
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161 int next; |
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162 int logicalno; |
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163 #endif /* USE_LOGICAL_JOYSTICKS */ |
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164 } SDL_joylist[MAX_JOYSTICKS]; |
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165 |
| 0 | 166 |
| 167 /* The private structure used to keep track of a joystick */ | |
| 168 struct joystick_hwdata { | |
| 169 int fd; | |
| 170 /* The current linux joystick driver maps hats to two axes */ | |
| 171 struct hwdata_hat { | |
| 172 int axis[2]; | |
| 173 } *hats; | |
| 174 /* The current linux joystick driver maps balls to two axes */ | |
| 175 struct hwdata_ball { | |
| 176 int axis[2]; | |
| 177 } *balls; | |
| 178 | |
| 179 /* Support for the Linux 2.4 unified input interface */ | |
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180 #ifdef USE_INPUT_EVENTS |
| 0 | 181 SDL_bool is_hid; |
| 182 Uint8 key_map[KEY_MAX-BTN_MISC]; | |
| 183 Uint8 abs_map[ABS_MAX]; | |
| 184 struct axis_correct { | |
| 185 int used; | |
| 186 int coef[3]; | |
| 187 } abs_correct[ABS_MAX]; | |
| 188 #endif | |
| 189 }; | |
| 190 | |
| 191 static char *mystrdup(const char *string) | |
| 192 { | |
| 193 char *newstring; | |
| 194 | |
| 195 newstring = (char *)malloc(strlen(string)+1); | |
| 196 if ( newstring ) { | |
| 197 strcpy(newstring, string); | |
| 198 } | |
| 199 return(newstring); | |
| 200 } | |
| 201 | |
|
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202 |
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203 #ifndef NO_LOGICAL_JOYSTICKS |
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204 |
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205 static int CountLogicalJoysticks(int max) |
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206 { |
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207 register int i, j, k, ret, prev; |
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208 const char* name; |
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209 |
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210 ret = 0; |
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211 |
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212 for(i = 0; i < max; i++) { |
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213 name = SDL_SYS_JoystickName(i); |
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214 |
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215 if (name) { |
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216 for(j = 0; j < SDL_TABLESIZE(joystick_logicalmap); j++) { |
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217 if (!strcmp(name, joystick_logicalmap[j].name)) { |
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218 |
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219 prev = i; |
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220 SDL_joylist[prev].map = joystick_logicalmap+j; |
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221 |
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222 for(k = 1; k < joystick_logicalmap[j].njoys; k++) { |
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223 SDL_joylist[prev].next = max + ret; |
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224 |
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225 if (prev != i) |
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226 SDL_joylist[max+ret].prev = prev; |
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227 |
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228 prev = max + ret; |
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229 SDL_joylist[prev].logicalno = k; |
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230 SDL_joylist[prev].map = joystick_logicalmap+j; |
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231 ret++; |
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232 } |
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233 |
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234 break; |
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235 } |
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236 } |
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237 } |
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238 } |
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239 |
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240 return ret; |
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241 } |
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242 |
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243 static void LogicalSuffix(int logicalno, char* namebuf, int len) |
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244 { |
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245 register int slen; |
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246 const static char suffixs[] = |
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247 "01020304050607080910111213141516171819" |
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248 "20212223242526272829303132"; |
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249 const char* suffix; |
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250 |
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251 slen = strlen(namebuf); |
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252 |
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253 suffix = NULL; |
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254 |
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255 if (logicalno*2<sizeof(suffixs)) |
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256 suffix = suffixs + (logicalno*2); |
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257 |
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258 if (slen + 4 < len && suffix) { |
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259 namebuf[slen++] = ' '; |
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260 namebuf[slen++] = '#'; |
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261 namebuf[slen++] = suffix[0]; |
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262 namebuf[slen++] = suffix[1]; |
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263 namebuf[slen++] = 0; |
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264 } |
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265 } |
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266 |
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267 #endif /* USE_LOGICAL_JOYSTICKS */ |
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268 |
| 0 | 269 #ifdef USE_INPUT_EVENTS |
| 270 #define test_bit(nr, addr) \ | |
| 271 (((1UL << ((nr) & 31)) & (((const unsigned int *) addr)[(nr) >> 5])) != 0) | |
| 272 | |
| 273 static int EV_IsJoystick(int fd) | |
| 274 { | |
| 275 unsigned long evbit[40]; | |
| 276 unsigned long keybit[40]; | |
| 277 unsigned long absbit[40]; | |
| 278 | |
| 279 if ( (ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) || | |
| 280 (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || | |
| 281 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0) ) { | |
| 282 return(0); | |
| 283 } | |
| 284 if (!(test_bit(EV_KEY, evbit) && test_bit(EV_ABS, evbit) && | |
| 285 test_bit(ABS_X, absbit) && test_bit(ABS_Y, absbit) && | |
| 286 (test_bit(BTN_TRIGGER, keybit) || test_bit(BTN_A, keybit) || test_bit(BTN_1, keybit)))) return 0; | |
| 287 return(1); | |
| 288 } | |
| 289 | |
| 290 #endif /* USE_INPUT_EVENTS */ | |
| 291 | |
| 292 /* Function to scan the system for joysticks */ | |
| 293 int SDL_SYS_JoystickInit(void) | |
| 294 { | |
| 295 /* The base path of the joystick devices */ | |
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245
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296 const char *joydev_pattern[] = { |
| 0 | 297 #ifdef USE_INPUT_EVENTS |
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245
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298 "/dev/input/event%d", |
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211
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299 #endif |
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300 "/dev/input/js%d", |
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301 "/dev/js%d" |
| 0 | 302 }; |
| 303 int numjoysticks; | |
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304 int i, j; |
| 0 | 305 int fd; |
| 306 char path[PATH_MAX]; | |
| 307 dev_t dev_nums[MAX_JOYSTICKS]; /* major/minor device numbers */ | |
| 308 struct stat sb; | |
| 309 int n, duplicate; | |
| 310 | |
| 311 numjoysticks = 0; | |
| 312 | |
| 313 /* First see if the user specified a joystick to use */ | |
| 314 if ( getenv("SDL_JOYSTICK_DEVICE") != NULL ) { | |
| 315 strncpy(path, getenv("SDL_JOYSTICK_DEVICE"), sizeof(path)); | |
| 316 path[sizeof(path)-1] = '\0'; | |
| 317 if ( stat(path, &sb) == 0 ) { | |
| 318 fd = open(path, O_RDONLY, 0); | |
| 319 if ( fd >= 0 ) { | |
| 320 /* Assume the user knows what they're doing. */ | |
|
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321 SDL_joylist[numjoysticks].fname =mystrdup(path); |
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322 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 323 dev_nums[numjoysticks] = sb.st_rdev; |
| 324 ++numjoysticks; | |
| 325 } | |
| 326 close(fd); | |
| 327 } | |
| 328 } | |
| 329 } | |
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330 |
| 0 | 331 for ( i=0; i<SDL_TABLESIZE(joydev_pattern); ++i ) { |
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332 for ( j=0; j < MAX_JOYSTICKS; ++j ) { |
| 0 | 333 sprintf(path, joydev_pattern[i], j); |
| 334 | |
| 335 /* rcg06302000 replaced access(F_OK) call with stat(). | |
| 336 * stat() will fail if the file doesn't exist, so it's | |
| 337 * equivalent behaviour. | |
| 338 */ | |
| 339 if ( stat(path, &sb) == 0 ) { | |
| 340 /* Check to make sure it's not already in list. | |
| 341 * This happens when we see a stick via symlink. | |
| 342 */ | |
| 343 duplicate = 0; | |
| 344 for (n=0; (n<numjoysticks) && !duplicate; ++n) { | |
| 345 if ( sb.st_rdev == dev_nums[n] ) { | |
| 346 duplicate = 1; | |
| 347 } | |
| 348 } | |
| 349 if (duplicate) { | |
| 350 continue; | |
| 351 } | |
| 352 | |
| 353 fd = open(path, O_RDONLY, 0); | |
| 354 if ( fd < 0 ) { | |
| 355 continue; | |
| 356 } | |
| 357 #ifdef USE_INPUT_EVENTS | |
| 358 #ifdef DEBUG_INPUT_EVENTS | |
| 359 printf("Checking %s\n", path); | |
| 360 #endif | |
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361 if ( (i == 0) && ! EV_IsJoystick(fd) ) { |
| 0 | 362 close(fd); |
| 363 continue; | |
| 364 } | |
| 365 #endif | |
| 366 close(fd); | |
| 367 | |
| 368 /* We're fine, add this joystick */ | |
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369 SDL_joylist[numjoysticks].fname =mystrdup(path); |
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370 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 371 dev_nums[numjoysticks] = sb.st_rdev; |
| 372 ++numjoysticks; | |
| 373 } | |
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374 } else |
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375 break; |
| 0 | 376 } |
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377 |
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378 #ifdef USE_INPUT_EVENTS |
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379 /* This is a special case... |
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380 If the event devices are valid then the joystick devices |
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381 will be duplicates but without extra information about their |
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382 hats or balls. Unfortunately, the event devices can't |
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383 currently be calibrated, so it's a win-lose situation. |
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384 So : /dev/input/eventX = /dev/input/jsY = /dev/jsY |
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385 */ |
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386 if ( (i == 0) && (numjoysticks > 0) ) |
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387 break; |
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388 #endif |
| 0 | 389 } |
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390 #ifndef NO_LOGICAL_JOYSTICKS |
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391 numjoysticks += CountLogicalJoysticks(numjoysticks); |
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392 #endif |
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393 |
| 0 | 394 return(numjoysticks); |
| 395 } | |
| 396 | |
| 397 /* Function to get the device-dependent name of a joystick */ | |
| 398 const char *SDL_SYS_JoystickName(int index) | |
| 399 { | |
| 400 int fd; | |
| 401 static char namebuf[128]; | |
| 402 char *name; | |
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403 SDL_logical_joydecl(int oindex = index); |
| 0 | 404 |
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405 #ifndef NO_LOGICAL_JOYSTICKS |
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406 SDL_joylist_head(index, index); |
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407 #endif |
| 0 | 408 name = NULL; |
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409 fd = open(SDL_joylist[index].fname, O_RDONLY, 0); |
| 0 | 410 if ( fd >= 0 ) { |
| 411 if ( | |
| 412 #ifdef USE_INPUT_EVENTS | |
| 413 (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) && | |
| 414 #endif | |
| 415 (ioctl(fd, JSIOCGNAME(sizeof(namebuf)), namebuf) <= 0) ) { | |
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416 name = SDL_joylist[index].fname; |
| 0 | 417 } else { |
| 418 name = namebuf; | |
| 419 } | |
| 420 close(fd); | |
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421 |
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422 #ifndef NO_LOGICAL_JOYSTICKS |
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423 if (SDL_joylist[oindex].prev || SDL_joylist[oindex].next) |
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424 LogicalSuffix(SDL_joylist[oindex].logicalno, namebuf, 128); |
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425 #endif |
| 0 | 426 } |
| 427 return name; | |
| 428 } | |
| 429 | |
| 430 static int allocate_hatdata(SDL_Joystick *joystick) | |
| 431 { | |
| 432 int i; | |
| 433 | |
| 434 joystick->hwdata->hats = (struct hwdata_hat *)malloc( | |
| 435 joystick->nhats * sizeof(struct hwdata_hat)); | |
| 436 if ( joystick->hwdata->hats == NULL ) { | |
| 437 return(-1); | |
| 438 } | |
| 439 for ( i=0; i<joystick->nhats; ++i ) { | |
| 440 joystick->hwdata->hats[i].axis[0] = 1; | |
| 441 joystick->hwdata->hats[i].axis[1] = 1; | |
| 442 } | |
| 443 return(0); | |
| 444 } | |
| 445 | |
| 446 static int allocate_balldata(SDL_Joystick *joystick) | |
| 447 { | |
| 448 int i; | |
| 449 | |
| 450 joystick->hwdata->balls = (struct hwdata_ball *)malloc( | |
| 451 joystick->nballs * sizeof(struct hwdata_ball)); | |
| 452 if ( joystick->hwdata->balls == NULL ) { | |
| 453 return(-1); | |
| 454 } | |
| 455 for ( i=0; i<joystick->nballs; ++i ) { | |
| 456 joystick->hwdata->balls[i].axis[0] = 0; | |
| 457 joystick->hwdata->balls[i].axis[1] = 0; | |
| 458 } | |
| 459 return(0); | |
| 460 } | |
| 461 | |
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462 static SDL_bool JS_ConfigJoystick(SDL_Joystick *joystick, int fd) |
| 0 | 463 { |
| 464 SDL_bool handled; | |
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465 unsigned char n; |
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466 int old_axes, tmp_naxes, tmp_nhats, tmp_nballs; |
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467 const char *name; |
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468 char *env, env_name[128]; |
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469 int i; |
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470 |
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471 handled = SDL_FALSE; |
| 0 | 472 |
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473 /* Default joystick device settings */ |
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474 if ( ioctl(fd, JSIOCGAXES, &n) < 0 ) { |
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475 joystick->naxes = 2; |
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476 } else { |
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477 joystick->naxes = n; |
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478 } |
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479 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { |
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480 joystick->nbuttons = 2; |
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481 } else { |
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482 joystick->nbuttons = n; |
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483 } |
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484 |
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485 name = SDL_SYS_JoystickName(joystick->index); |
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486 old_axes = joystick->naxes; |
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487 |
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488 /* Generic analog joystick support */ |
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489 if ( strstr(name, "Analog") == name && strstr(name, "-hat") ) { |
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490 if ( sscanf(name,"Analog %d-axis %*d-button %d-hat", |
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491 &tmp_naxes, &tmp_nhats) == 2 ) { |
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492 |
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493 joystick->naxes = tmp_naxes; |
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494 joystick->nhats = tmp_nhats; |
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495 |
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496 handled = SDL_TRUE; |
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497 } |
| 0 | 498 } |
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499 |
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500 /* Special joystick support */ |
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501 for ( i=0; i < SDL_TABLESIZE(special_joysticks); ++i ) { |
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502 if ( strcmp(name, special_joysticks[i].name) == 0 ) { |
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503 |
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504 joystick->naxes = special_joysticks[i].naxes; |
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505 joystick->nhats = special_joysticks[i].nhats; |
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506 joystick->nballs = special_joysticks[i].nballs; |
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507 |
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508 handled = SDL_TRUE; |
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509 break; |
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510 } |
| 0 | 511 } |
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512 |
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513 /* User environment joystick support */ |
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514 if ( (env = getenv("SDL_LINUX_JOYSTICK")) ) { |
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515 strcpy(env_name, ""); |
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516 if ( *env == '\'' && sscanf(env, "'%[^']s'", env_name) == 1 ) |
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517 env += strlen(env_name)+2; |
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518 else if ( sscanf(env, "%s", env_name) == 1 ) |
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519 env += strlen(env_name); |
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520 |
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521 if ( strcmp(name, env_name) == 0 ) { |
| 0 | 522 |
|
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523 if ( sscanf(env, "%d %d %d", &tmp_naxes, &tmp_nhats, |
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524 &tmp_nballs) == 3 ) { |
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525 |
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526 joystick->naxes = tmp_naxes; |
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527 joystick->nhats = tmp_nhats; |
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528 joystick->nballs = tmp_nballs; |
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529 |
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530 handled = SDL_TRUE; |
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531 } |
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532 } |
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533 } |
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534 |
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535 /* Remap hats and balls */ |
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536 if (handled) { |
| 0 | 537 if ( joystick->nhats > 0 ) { |
|
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538 if ( allocate_hatdata(joystick) < 0 ) { |
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539 joystick->nhats = 0; |
| 0 | 540 } |
| 541 } | |
| 542 if ( joystick->nballs > 0 ) { | |
| 543 if ( allocate_balldata(joystick) < 0 ) { | |
| 544 joystick->nballs = 0; | |
| 545 } | |
| 546 } | |
| 547 } | |
|
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548 |
| 0 | 549 return(handled); |
| 550 } | |
| 551 | |
| 552 #ifdef USE_INPUT_EVENTS | |
| 553 | |
| 554 static SDL_bool EV_ConfigJoystick(SDL_Joystick *joystick, int fd) | |
| 555 { | |
| 871 | 556 int i, t; |
| 0 | 557 unsigned long keybit[40]; |
| 558 unsigned long absbit[40]; | |
| 559 unsigned long relbit[40]; | |
| 560 | |
| 561 /* See if this device uses the new unified event API */ | |
| 562 if ( (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) >= 0) && | |
| 563 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) >= 0) && | |
| 564 (ioctl(fd, EVIOCGBIT(EV_REL, sizeof(relbit)), relbit) >= 0) ) { | |
| 565 joystick->hwdata->is_hid = SDL_TRUE; | |
| 566 | |
| 567 /* Get the number of buttons, axes, and other thingamajigs */ | |
| 568 for ( i=BTN_JOYSTICK; i < KEY_MAX; ++i ) { | |
| 569 if ( test_bit(i, keybit) ) { | |
| 570 #ifdef DEBUG_INPUT_EVENTS | |
| 571 printf("Joystick has button: 0x%x\n", i); | |
| 572 #endif | |
| 573 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 574 joystick->nbuttons; | |
| 575 ++joystick->nbuttons; | |
| 576 } | |
| 577 } | |
| 578 for ( i=BTN_MISC; i < BTN_JOYSTICK; ++i ) { | |
| 579 if ( test_bit(i, keybit) ) { | |
| 580 #ifdef DEBUG_INPUT_EVENTS | |
| 581 printf("Joystick has button: 0x%x\n", i); | |
| 582 #endif | |
| 583 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 584 joystick->nbuttons; | |
| 585 ++joystick->nbuttons; | |
| 586 } | |
| 587 } | |
| 588 for ( i=0; i<ABS_MAX; ++i ) { | |
| 589 /* Skip hats */ | |
| 590 if ( i == ABS_HAT0X ) { | |
| 591 i = ABS_HAT3Y; | |
| 592 continue; | |
| 593 } | |
| 594 if ( test_bit(i, absbit) ) { | |
| 595 int values[5]; | |
| 596 | |
|
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597 if ( ioctl(fd, EVIOCGABS(i), values) < 0 ) |
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598 continue; |
| 0 | 599 #ifdef DEBUG_INPUT_EVENTS |
| 600 printf("Joystick has absolute axis: %x\n", i); | |
| 601 printf("Values = { %d, %d, %d, %d, %d }\n", | |
| 602 values[0], values[1], | |
| 603 values[2], values[3], values[4]); | |
| 604 #endif /* DEBUG_INPUT_EVENTS */ | |
| 605 joystick->hwdata->abs_map[i] = joystick->naxes; | |
| 606 if ( values[1] == values[2] ) { | |
| 607 joystick->hwdata->abs_correct[i].used = 0; | |
| 608 } else { | |
| 609 joystick->hwdata->abs_correct[i].used = 1; | |
|
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610 joystick->hwdata->abs_correct[i].coef[0] = |
|
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611 (values[2] + values[1]) / 2 - values[4]; |
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612 joystick->hwdata->abs_correct[i].coef[1] = |
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613 (values[2] + values[1]) / 2 + values[4]; |
| 871 | 614 t = ((values[2] - values[1]) / 2 - 2 * values[4]); |
| 615 if ( t != 0 ) { | |
| 616 joystick->hwdata->abs_correct[i].coef[2] = (1 << 29) / t; | |
|
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617 } else { |
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618 joystick->hwdata->abs_correct[i].coef[2] = 0; |
| 871 | 619 } |
| 0 | 620 } |
| 621 ++joystick->naxes; | |
| 622 } | |
| 623 } | |
| 624 for ( i=ABS_HAT0X; i <= ABS_HAT3Y; i += 2 ) { | |
| 625 if ( test_bit(i, absbit) || test_bit(i+1, absbit) ) { | |
| 626 #ifdef DEBUG_INPUT_EVENTS | |
| 627 printf("Joystick has hat %d\n",(i-ABS_HAT0X)/2); | |
| 628 #endif | |
| 629 ++joystick->nhats; | |
| 630 } | |
| 631 } | |
| 632 if ( test_bit(REL_X, relbit) || test_bit(REL_Y, relbit) ) { | |
| 633 ++joystick->nballs; | |
| 634 } | |
| 635 | |
| 636 /* Allocate data to keep track of these thingamajigs */ | |
| 637 if ( joystick->nhats > 0 ) { | |
| 638 if ( allocate_hatdata(joystick) < 0 ) { | |
| 639 joystick->nhats = 0; | |
| 640 } | |
| 641 } | |
| 642 if ( joystick->nballs > 0 ) { | |
| 643 if ( allocate_balldata(joystick) < 0 ) { | |
| 644 joystick->nballs = 0; | |
| 645 } | |
| 646 } | |
| 647 } | |
| 648 return(joystick->hwdata->is_hid); | |
| 649 } | |
| 650 | |
| 651 #endif /* USE_INPUT_EVENTS */ | |
| 652 | |
|
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653 #ifndef NO_LOGICAL_JOYSTICKS |
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654 static void ConfigLogicalJoystick(SDL_Joystick *joystick) |
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655 { |
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656 struct joystick_logical_layout* layout; |
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657 |
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658 layout = SDL_joylist[joystick->index].map->layouts + |
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659 SDL_joylist[joystick->index].logicalno; |
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660 |
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661 joystick->nbuttons = layout->nbuttons; |
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662 joystick->nhats = layout->nhats; |
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663 joystick->naxes = layout->naxes; |
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664 joystick->nballs = layout->nballs; |
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665 } |
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666 #endif |
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667 |
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668 |
| 0 | 669 /* Function to open a joystick for use. |
| 670 The joystick to open is specified by the index field of the joystick. | |
| 671 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 672 It returns 0, or -1 if there is an error. | |
| 673 */ | |
| 674 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 675 { | |
| 676 int fd; | |
|
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677 SDL_logical_joydecl(int realindex); |
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678 SDL_logical_joydecl(SDL_Joystick *realjoy = NULL); |
| 0 | 679 |
| 680 /* Open the joystick and set the joystick file descriptor */ | |
|
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681 #ifndef NO_LOGICAL_JOYSTICKS |
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682 if (SDL_joylist[joystick->index].fname == NULL) { |
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683 SDL_joylist_head(realindex, joystick->index); |
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684 realjoy = SDL_JoystickOpen(realindex); |
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685 |
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686 if (realjoy == NULL) |
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687 return(-1); |
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688 |
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689 fd = realjoy->hwdata->fd; |
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690 |
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691 } else { |
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692 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
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693 } |
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694 SDL_joylist[joystick->index].joy = joystick; |
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695 #else |
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696 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
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697 #endif |
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698 |
| 0 | 699 if ( fd < 0 ) { |
| 700 SDL_SetError("Unable to open %s\n", | |
| 701 SDL_joylist[joystick->index]); | |
| 702 return(-1); | |
| 703 } | |
| 704 joystick->hwdata = (struct joystick_hwdata *) | |
| 705 malloc(sizeof(*joystick->hwdata)); | |
| 706 if ( joystick->hwdata == NULL ) { | |
| 707 SDL_OutOfMemory(); | |
| 708 close(fd); | |
| 709 return(-1); | |
| 710 } | |
| 711 memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); | |
| 712 joystick->hwdata->fd = fd; | |
| 713 | |
| 714 /* Set the joystick to non-blocking read mode */ | |
| 715 fcntl(fd, F_SETFL, O_NONBLOCK); | |
| 716 | |
| 717 /* Get the number of buttons and axes on the joystick */ | |
|
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718 #ifndef NO_LOGICAL_JOYSTICKS |
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719 if (realjoy) |
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720 ConfigLogicalJoystick(joystick); |
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721 else |
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722 #endif |
| 0 | 723 #ifdef USE_INPUT_EVENTS |
| 724 if ( ! EV_ConfigJoystick(joystick, fd) ) | |
| 725 #endif | |
|
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726 JS_ConfigJoystick(joystick, fd); |
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727 |
| 0 | 728 return(0); |
| 729 } | |
| 730 | |
|
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731 #ifndef NO_LOGICAL_JOYSTICKS |
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732 |
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733 static SDL_Joystick* FindLogicalJoystick( |
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734 SDL_Joystick *joystick, struct joystick_logical_values* v) |
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735 { |
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736 SDL_Joystick *logicaljoy; |
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737 register int i; |
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738 |
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739 i = joystick->index; |
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740 logicaljoy = NULL; |
|
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Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
741 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
742 /* 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
|
743 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
744 for(;;) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
745 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
746 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
|
747 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
|
748 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
749 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
750 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
751 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
|
752 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
753 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
754 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
|
755 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
756 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
757 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
758 return logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
759 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
760 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
761 static int LogicalJoystickButton( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
762 SDL_Joystick *joystick, Uint8 button, Uint8 state){ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
763 struct joystick_logical_values* buttons; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
764 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
765 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
766 /* 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
|
767 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
768 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
|
769 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
770 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
771 /* 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
|
772 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
773 buttons = SDL_joylist[joystick->index].map->buttons+button; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
774 logicaljoy = FindLogicalJoystick(joystick, buttons); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
775 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
776 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
777 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
778 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
779 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
|
780 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
781 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
782 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
783 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
784 static int LogicalJoystickAxis( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
785 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
|
786 { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
787 struct joystick_logical_values* axes; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
788 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
789 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
790 /* 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
|
791 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
792 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
|
793 return 0; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
794 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
795 /* 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
|
796 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
797 axes = SDL_joylist[joystick->index].map->axes+axis; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
798 logicaljoy = FindLogicalJoystick(joystick, axes); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
799 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
800 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
801 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
802 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
803 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
|
804 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
805 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
806 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
807 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
808 |
| 0 | 809 static __inline__ |
| 810 void HandleHat(SDL_Joystick *stick, Uint8 hat, int axis, int value) | |
| 811 { | |
| 812 struct hwdata_hat *the_hat; | |
| 813 const Uint8 position_map[3][3] = { | |
| 814 { SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP }, | |
| 815 { SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT }, | |
| 816 { SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN } | |
| 817 }; | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
818 SDL_logical_joydecl(SDL_Joystick *logicaljoy = NULL); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
819 SDL_logical_joydecl(struct joystick_logical_values* hats = NULL); |
| 0 | 820 |
| 821 the_hat = &stick->hwdata->hats[hat]; | |
| 822 if ( value < 0 ) { | |
| 823 value = 0; | |
| 824 } else | |
| 825 if ( value == 0 ) { | |
| 826 value = 1; | |
| 827 } else | |
| 828 if ( value > 0 ) { | |
| 829 value = 2; | |
| 830 } | |
| 831 if ( value != the_hat->axis[axis] ) { | |
| 832 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
|
833 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
834 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
835 /* 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
|
836 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
837 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
|
838 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
839 /* 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
|
840 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
841 hats = SDL_joylist[stick->index].map->hats+hat; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
842 logicaljoy = FindLogicalJoystick(stick, hats); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
843 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
844 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
845 if (logicaljoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
846 stick = logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
847 hat = hats->nthing; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
848 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
849 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
850 |
| 0 | 851 SDL_PrivateJoystickHat(stick, hat, |
| 852 position_map[the_hat->axis[1]][the_hat->axis[0]]); | |
| 853 } | |
| 854 } | |
| 855 | |
| 856 static __inline__ | |
| 857 void HandleBall(SDL_Joystick *stick, Uint8 ball, int axis, int value) | |
| 858 { | |
| 859 stick->hwdata->balls[ball].axis[axis] += value; | |
| 860 } | |
| 861 | |
| 862 /* Function to update the state of a joystick - called as a device poll. | |
| 863 * This function shouldn't update the joystick structure directly, | |
| 864 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 865 * and update joystick device state. | |
| 866 */ | |
| 867 static __inline__ void JS_HandleEvents(SDL_Joystick *joystick) | |
| 868 { | |
| 869 struct js_event events[32]; | |
| 870 int i, len; | |
| 871 Uint8 other_axis; | |
| 872 | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
873 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
874 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
|
875 SDL_joylist_head(i, joystick->index); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
876 return JS_HandleEvents(SDL_joylist[i].joy); |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
877 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
878 #endif |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
879 |
| 0 | 880 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 881 len /= sizeof(events[0]); | |
| 882 for ( i=0; i<len; ++i ) { | |
| 883 switch (events[i].type & ~JS_EVENT_INIT) { | |
| 884 case JS_EVENT_AXIS: | |
| 885 if ( events[i].number < joystick->naxes ) { | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
886 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
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887 if (!LogicalJoystickAxis(joystick, |
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888 events[i].number, events[i].value)) |
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889 #endif |
| 0 | 890 SDL_PrivateJoystickAxis(joystick, |
| 891 events[i].number, events[i].value); | |
| 892 break; | |
| 893 } | |
| 894 events[i].number -= joystick->naxes; | |
|
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895 other_axis = (events[i].number / 2); |
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896 if ( other_axis < joystick->nhats ) { |
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897 HandleHat(joystick, other_axis, |
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898 events[i].number%2, |
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899 events[i].value); |
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900 break; |
| 0 | 901 } |
| 902 events[i].number -= joystick->nhats*2; | |
| 903 other_axis = (events[i].number / 2); | |
| 904 if ( other_axis < joystick->nballs ) { | |
| 905 HandleBall(joystick, other_axis, | |
| 906 events[i].number%2, | |
| 907 events[i].value); | |
| 908 break; | |
| 909 } | |
| 910 break; | |
| 911 case JS_EVENT_BUTTON: | |
|
892
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912 #ifndef NO_LOGICAL_JOYSTICKS |
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913 if (!LogicalJoystickButton(joystick, |
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914 events[i].number, events[i].value)) |
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915 #endif |
| 0 | 916 SDL_PrivateJoystickButton(joystick, |
| 917 events[i].number, events[i].value); | |
| 918 break; | |
| 919 default: | |
| 920 /* ?? */ | |
| 921 break; | |
| 922 } | |
| 923 } | |
| 924 } | |
| 925 } | |
| 926 #ifdef USE_INPUT_EVENTS | |
| 927 static __inline__ int EV_AxisCorrect(SDL_Joystick *joystick, int which, int value) | |
| 928 { | |
| 929 struct axis_correct *correct; | |
| 930 | |
| 931 correct = &joystick->hwdata->abs_correct[which]; | |
| 932 if ( correct->used ) { | |
| 933 if ( value > correct->coef[0] ) { | |
| 934 if ( value < correct->coef[1] ) { | |
| 935 return 0; | |
| 936 } | |
| 937 value -= correct->coef[1]; | |
| 938 } else { | |
| 939 value -= correct->coef[0]; | |
| 940 } | |
| 941 value *= correct->coef[2]; | |
| 942 value >>= 14; | |
| 943 } | |
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944 |
| 0 | 945 /* Clamp and return */ |
|
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946 if ( value < -32767 ) return -32767; |
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947 if ( value > 32767 ) return 32767; |
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948 |
| 0 | 949 return value; |
| 950 } | |
| 951 | |
| 952 static __inline__ void EV_HandleEvents(SDL_Joystick *joystick) | |
| 953 { | |
| 954 struct input_event events[32]; | |
| 955 int i, len; | |
| 956 int code; | |
| 957 | |
|
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958 #ifndef NO_LOGICAL_JOYSTICKS |
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959 if (SDL_joylist[joystick->index].fname == NULL) { |
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960 SDL_joylist_head(i, joystick->index); |
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961 return EV_HandleEvents(SDL_joylist[i].joy); |
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962 } |
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963 #endif |
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964 |
| 0 | 965 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 966 len /= sizeof(events[0]); | |
| 967 for ( i=0; i<len; ++i ) { | |
| 968 code = events[i].code; | |
| 969 switch (events[i].type) { | |
| 970 case EV_KEY: | |
| 971 if ( code >= BTN_MISC ) { | |
| 972 code -= BTN_MISC; | |
|
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973 #ifndef NO_LOGICAL_JOYSTICKS |
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974 if (!LogicalJoystickButton(joystick, |
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975 joystick->hwdata->key_map[code], |
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976 events[i].value)) |
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977 #endif |
| 0 | 978 SDL_PrivateJoystickButton(joystick, |
| 979 joystick->hwdata->key_map[code], | |
| 980 events[i].value); | |
| 981 } | |
| 982 break; | |
| 983 case EV_ABS: | |
| 984 switch (code) { | |
| 985 case ABS_HAT0X: | |
| 986 case ABS_HAT0Y: | |
| 987 case ABS_HAT1X: | |
| 988 case ABS_HAT1Y: | |
| 989 case ABS_HAT2X: | |
| 990 case ABS_HAT2Y: | |
| 991 case ABS_HAT3X: | |
| 992 case ABS_HAT3Y: | |
| 993 code -= ABS_HAT0X; | |
| 994 HandleHat(joystick, code/2, code%2, | |
| 995 events[i].value); | |
| 996 break; | |
| 997 default: | |
| 998 events[i].value = EV_AxisCorrect(joystick, code, events[i].value); | |
|
892
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999 #ifndef NO_LOGICAL_JOYSTICKS |
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1000 if (!LogicalJoystickAxis(joystick, |
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1001 joystick->hwdata->abs_map[code], |
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1002 events[i].value)) |
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1003 #endif |
| 0 | 1004 SDL_PrivateJoystickAxis(joystick, |
| 1005 joystick->hwdata->abs_map[code], | |
| 1006 events[i].value); | |
| 1007 break; | |
| 1008 } | |
| 1009 break; | |
| 1010 case EV_REL: | |
| 1011 switch (code) { | |
| 1012 case REL_X: | |
| 1013 case REL_Y: | |
| 1014 code -= REL_X; | |
| 1015 HandleBall(joystick, code/2, code%2, | |
| 1016 events[i].value); | |
| 1017 break; | |
| 1018 default: | |
| 1019 break; | |
| 1020 } | |
| 1021 break; | |
| 1022 default: | |
| 1023 break; | |
| 1024 } | |
| 1025 } | |
| 1026 } | |
| 1027 } | |
| 1028 #endif /* USE_INPUT_EVENTS */ | |
| 1029 | |
| 1030 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 1031 { | |
| 1032 int i; | |
| 1033 | |
| 1034 #ifdef USE_INPUT_EVENTS | |
| 1035 if ( joystick->hwdata->is_hid ) | |
| 1036 EV_HandleEvents(joystick); | |
| 1037 else | |
| 1038 #endif | |
| 1039 JS_HandleEvents(joystick); | |
| 1040 | |
| 1041 /* Deliver ball motion updates */ | |
| 1042 for ( i=0; i<joystick->nballs; ++i ) { | |
| 1043 int xrel, yrel; | |
| 1044 | |
| 1045 xrel = joystick->hwdata->balls[i].axis[0]; | |
| 1046 yrel = joystick->hwdata->balls[i].axis[1]; | |
| 1047 if ( xrel || yrel ) { | |
| 1048 joystick->hwdata->balls[i].axis[0] = 0; | |
| 1049 joystick->hwdata->balls[i].axis[1] = 0; | |
| 1050 SDL_PrivateJoystickBall(joystick, (Uint8)i, xrel, yrel); | |
| 1051 } | |
| 1052 } | |
| 1053 } | |
| 1054 | |
| 1055 /* Function to close a joystick after use */ | |
| 1056 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 1057 { | |
|
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1058 #ifndef NO_LOGICAL_JOYSTICKS |
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1059 register int i; |
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1060 if (SDL_joylist[joystick->index].fname == NULL) { |
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1061 SDL_joylist_head(i, joystick->index); |
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1062 SDL_JoystickClose(SDL_joylist[i].joy); |
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1063 } |
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1064 #endif |
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1065 |
| 0 | 1066 if ( joystick->hwdata ) { |
|
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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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1069 #endif |
| 0 | 1070 close(joystick->hwdata->fd); |
| 1071 if ( joystick->hwdata->hats ) { | |
| 1072 free(joystick->hwdata->hats); | |
| 1073 } | |
| 1074 if ( joystick->hwdata->balls ) { | |
| 1075 free(joystick->hwdata->balls); | |
| 1076 } | |
| 1077 free(joystick->hwdata); | |
| 1078 joystick->hwdata = NULL; | |
| 1079 } | |
| 1080 } | |
| 1081 | |
| 1082 /* Function to perform any system-specific joystick related cleanup */ | |
| 1083 void SDL_SYS_JoystickQuit(void) | |
| 1084 { | |
| 1085 int i; | |
| 1086 | |
|
892
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1087 for ( i=0; SDL_joylist[i].fname; ++i ) { |
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1088 free(SDL_joylist[i].fname); |
| 0 | 1089 } |
|
892
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1090 SDL_joylist[0].fname = NULL; |
| 0 | 1091 } |
| 1092 |