Mercurial > sdl-ios-xcode
annotate src/joystick/linux/SDL_sysjoystick.c @ 1336:3692456e7b0f
Use SDL_ prefixed versions of C library functions.
FIXME:
Change #include <stdlib.h> to #include "SDL_stdlib.h"
Change #include <string.h> to #include "SDL_string.h"
Make sure nothing else broke because of this...
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 07 Feb 2006 06:59:48 +0000 |
| parents | c9b51268668f |
| children | 604d73db6802 |
| 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 */ |
| 22 | |
| 23 /* This is the system specific header for the SDL joystick API */ | |
| 24 | |
| 25 #include <stdio.h> /* For the definition of NULL */ | |
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26 #include <stdlib.h> /* For SDL_getenv() prototype */ |
| 0 | 27 #include <string.h> |
| 28 #include <sys/stat.h> | |
| 29 #include <unistd.h> | |
| 30 #include <fcntl.h> | |
| 31 #include <sys/ioctl.h> | |
| 32 #include <limits.h> /* For the definition of PATH_MAX */ | |
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33 #ifdef __arm__ |
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34 #include <linux/limits.h> /* Arm cross-compiler needs this */ |
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35 #endif |
| 0 | 36 #include <linux/joystick.h> |
| 37 #ifdef USE_INPUT_EVENTS | |
| 38 #include <linux/input.h> | |
| 39 #endif | |
| 40 | |
| 41 #include "SDL_error.h" | |
| 42 #include "SDL_joystick.h" | |
| 43 #include "SDL_sysjoystick.h" | |
| 44 #include "SDL_joystick_c.h" | |
| 45 | |
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46 /* Special joystick configurations */ |
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47 static struct { |
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48 const char *name; |
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49 int naxes; |
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50 int nhats; |
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51 int nballs; |
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52 } special_joysticks[] = { |
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53 { "MadCatz Panther XL", 3, 2, 1 }, /* We don't handle rudder (axis 8) */ |
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54 { "SideWinder Precision Pro", 4, 1, 0 }, |
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55 { "SideWinder 3D Pro", 4, 1, 0 }, |
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56 { "Microsoft SideWinder 3D Pro", 4, 1, 0 }, |
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57 { "Microsoft SideWinder Dual Strike USB version 1.0", 2, 1, 0 }, |
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58 { "WingMan Interceptor", 3, 3, 0 }, |
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59 { "WingMan Extreme Digital 3D", 4, 1, 0 }, |
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60 { "Microsoft SideWinder Precision 2 Joystick", 4, 1, 0 }, |
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61 { "Logitech Inc. WingMan Extreme Digital 3D", 4, 1, 0 }, |
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62 { "Saitek Saitek X45", 6, 1, 0 } |
| 0 | 63 }; |
| 64 | |
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65 #ifndef NO_LOGICAL_JOYSTICKS |
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66 |
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67 static struct joystick_logical_values { |
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68 int njoy; |
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69 int nthing; |
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70 } joystick_logical_values[] = { |
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71 |
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72 /* +0 */ |
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73 /* MP-8800 axes map - map to {logical joystick #, logical axis #} */ |
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74 {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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75 {3,0},{3,1},{3,2},{3,3},{0,4},{1,4},{2,4}, |
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76 |
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77 /* +19 */ |
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78 /* MP-8800 hat map - map to {logical joystick #, logical hat #} */ |
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79 {0,0},{1,0},{2,0},{3,0}, |
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80 |
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81 /* +23 */ |
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82 /* MP-8800 button map - map to {logical joystick #, logical button #} */ |
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83 {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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84 {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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85 {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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86 {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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87 }; |
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88 |
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89 static struct joystick_logical_layout { |
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90 int naxes; |
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91 int nhats; |
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92 int nballs; |
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93 int nbuttons; |
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94 } joystick_logical_layout[] = { |
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95 /* MP-8800 logical layout */ |
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96 {5, 1, 0, 12}, |
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97 {5, 1, 0, 12}, |
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98 {5, 1, 0, 12}, |
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99 {4, 1, 0, 12} |
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100 }; |
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101 |
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102 /* |
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103 Some USB HIDs show up as a single joystick even though they actually |
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104 control 2 or more joysticks. This array sets up a means of mapping |
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105 a single physical joystick to multiple logical joysticks. (djm) |
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106 |
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107 njoys |
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108 the number of logical joysticks |
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109 |
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110 layouts |
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111 an array of layout structures, one to describe each logical joystick |
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112 |
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113 axes, hats, balls, buttons |
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114 arrays that map a physical thingy to a logical thingy |
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115 */ |
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116 static struct joystick_logicalmap { |
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117 const char *name; |
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118 int njoys; |
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119 struct joystick_logical_layout *layouts; |
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120 struct joystick_logical_values *axes; |
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121 struct joystick_logical_values *hats; |
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122 struct joystick_logical_values *balls; |
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123 struct joystick_logical_values *buttons; |
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124 |
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125 } joystick_logicalmap[] = { |
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126 {"WiseGroup.,Ltd MP-8800 Quad USB Joypad", 4, joystick_logical_layout, |
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127 joystick_logical_values, joystick_logical_values+19, NULL, |
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128 joystick_logical_values+23} |
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129 }; |
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130 |
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131 /* find the head of a linked list, given a point in it |
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132 */ |
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133 #define SDL_joylist_head(i, start)\ |
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134 for(i = start; SDL_joylist[i].fname == NULL;) i = SDL_joylist[i].prev; |
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135 |
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136 #define SDL_logical_joydecl(d) d |
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137 |
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138 |
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139 #else |
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140 |
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141 #define SDL_logical_joydecl(d) |
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142 |
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143 #endif /* USE_LOGICAL_JOYSTICKS */ |
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144 |
| 0 | 145 /* The maximum number of joysticks we'll detect */ |
| 146 #define MAX_JOYSTICKS 32 | |
| 147 | |
| 148 /* A list of available joysticks */ | |
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149 static struct |
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150 { |
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151 char* fname; |
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152 #ifndef NO_LOGICAL_JOYSTICKS |
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153 SDL_Joystick* joy; |
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154 struct joystick_logicalmap* map; |
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155 int prev; |
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156 int next; |
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157 int logicalno; |
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158 #endif /* USE_LOGICAL_JOYSTICKS */ |
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159 } SDL_joylist[MAX_JOYSTICKS]; |
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160 |
| 0 | 161 |
| 162 /* The private structure used to keep track of a joystick */ | |
| 163 struct joystick_hwdata { | |
| 164 int fd; | |
| 165 /* The current linux joystick driver maps hats to two axes */ | |
| 166 struct hwdata_hat { | |
| 167 int axis[2]; | |
| 168 } *hats; | |
| 169 /* The current linux joystick driver maps balls to two axes */ | |
| 170 struct hwdata_ball { | |
| 171 int axis[2]; | |
| 172 } *balls; | |
| 173 | |
| 174 /* Support for the Linux 2.4 unified input interface */ | |
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175 #ifdef USE_INPUT_EVENTS |
| 0 | 176 SDL_bool is_hid; |
| 177 Uint8 key_map[KEY_MAX-BTN_MISC]; | |
| 178 Uint8 abs_map[ABS_MAX]; | |
| 179 struct axis_correct { | |
| 180 int used; | |
| 181 int coef[3]; | |
| 182 } abs_correct[ABS_MAX]; | |
| 183 #endif | |
| 184 }; | |
| 185 | |
| 186 static char *mystrdup(const char *string) | |
| 187 { | |
| 188 char *newstring; | |
| 189 | |
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190 newstring = (char *)SDL_malloc(SDL_strlen(string)+1); |
| 0 | 191 if ( newstring ) { |
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192 SDL_strcpy(newstring, string); |
| 0 | 193 } |
| 194 return(newstring); | |
| 195 } | |
| 196 | |
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197 |
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198 #ifndef NO_LOGICAL_JOYSTICKS |
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199 |
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200 static int CountLogicalJoysticks(int max) |
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201 { |
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202 register int i, j, k, ret, prev; |
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203 const char* name; |
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204 |
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205 ret = 0; |
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206 |
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207 for(i = 0; i < max; i++) { |
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208 name = SDL_SYS_JoystickName(i); |
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209 |
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210 if (name) { |
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211 for(j = 0; j < SDL_TABLESIZE(joystick_logicalmap); j++) { |
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212 if (!SDL_strcmp(name, joystick_logicalmap[j].name)) { |
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213 |
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214 prev = i; |
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215 SDL_joylist[prev].map = joystick_logicalmap+j; |
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216 |
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217 for(k = 1; k < joystick_logicalmap[j].njoys; k++) { |
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218 SDL_joylist[prev].next = max + ret; |
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219 |
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220 if (prev != i) |
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221 SDL_joylist[max+ret].prev = prev; |
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222 |
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223 prev = max + ret; |
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224 SDL_joylist[prev].logicalno = k; |
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225 SDL_joylist[prev].map = joystick_logicalmap+j; |
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226 ret++; |
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227 } |
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228 |
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229 break; |
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230 } |
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231 } |
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232 } |
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233 } |
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234 |
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235 return ret; |
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236 } |
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237 |
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238 static void LogicalSuffix(int logicalno, char* namebuf, int len) |
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239 { |
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240 register int slen; |
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241 const static char suffixs[] = |
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242 "01020304050607080910111213141516171819" |
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243 "20212223242526272829303132"; |
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244 const char* suffix; |
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245 |
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246 slen = SDL_strlen(namebuf); |
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247 |
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248 suffix = NULL; |
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249 |
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250 if (logicalno*2<sizeof(suffixs)) |
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251 suffix = suffixs + (logicalno*2); |
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252 |
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253 if (slen + 4 < len && suffix) { |
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254 namebuf[slen++] = ' '; |
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255 namebuf[slen++] = '#'; |
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256 namebuf[slen++] = suffix[0]; |
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257 namebuf[slen++] = suffix[1]; |
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258 namebuf[slen++] = 0; |
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259 } |
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260 } |
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261 |
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262 #endif /* USE_LOGICAL_JOYSTICKS */ |
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263 |
| 0 | 264 #ifdef USE_INPUT_EVENTS |
| 265 #define test_bit(nr, addr) \ | |
| 266 (((1UL << ((nr) & 31)) & (((const unsigned int *) addr)[(nr) >> 5])) != 0) | |
| 267 | |
| 268 static int EV_IsJoystick(int fd) | |
| 269 { | |
| 270 unsigned long evbit[40]; | |
| 271 unsigned long keybit[40]; | |
| 272 unsigned long absbit[40]; | |
| 273 | |
| 274 if ( (ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) || | |
| 275 (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) || | |
| 276 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0) ) { | |
| 277 return(0); | |
| 278 } | |
| 279 if (!(test_bit(EV_KEY, evbit) && test_bit(EV_ABS, evbit) && | |
| 280 test_bit(ABS_X, absbit) && test_bit(ABS_Y, absbit) && | |
| 281 (test_bit(BTN_TRIGGER, keybit) || test_bit(BTN_A, keybit) || test_bit(BTN_1, keybit)))) return 0; | |
| 282 return(1); | |
| 283 } | |
| 284 | |
| 285 #endif /* USE_INPUT_EVENTS */ | |
| 286 | |
| 287 /* Function to scan the system for joysticks */ | |
| 288 int SDL_SYS_JoystickInit(void) | |
| 289 { | |
| 290 /* The base path of the joystick devices */ | |
|
245
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291 const char *joydev_pattern[] = { |
| 0 | 292 #ifdef USE_INPUT_EVENTS |
|
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293 "/dev/input/event%d", |
|
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294 #endif |
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295 "/dev/input/js%d", |
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296 "/dev/js%d" |
| 0 | 297 }; |
| 298 int numjoysticks; | |
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299 int i, j; |
| 0 | 300 int fd; |
| 301 char path[PATH_MAX]; | |
| 302 dev_t dev_nums[MAX_JOYSTICKS]; /* major/minor device numbers */ | |
| 303 struct stat sb; | |
| 304 int n, duplicate; | |
| 305 | |
| 306 numjoysticks = 0; | |
| 307 | |
| 308 /* First see if the user specified a joystick to use */ | |
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309 if ( SDL_getenv("SDL_JOYSTICK_DEVICE") != NULL ) { |
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310 SDL_strncpy(path, SDL_getenv("SDL_JOYSTICK_DEVICE"), sizeof(path)); |
| 0 | 311 path[sizeof(path)-1] = '\0'; |
| 312 if ( stat(path, &sb) == 0 ) { | |
| 313 fd = open(path, O_RDONLY, 0); | |
| 314 if ( fd >= 0 ) { | |
| 315 /* Assume the user knows what they're doing. */ | |
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316 SDL_joylist[numjoysticks].fname =mystrdup(path); |
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317 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 318 dev_nums[numjoysticks] = sb.st_rdev; |
| 319 ++numjoysticks; | |
| 320 } | |
| 321 close(fd); | |
| 322 } | |
| 323 } | |
| 324 } | |
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325 |
| 0 | 326 for ( i=0; i<SDL_TABLESIZE(joydev_pattern); ++i ) { |
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327 for ( j=0; j < MAX_JOYSTICKS; ++j ) { |
| 0 | 328 sprintf(path, joydev_pattern[i], j); |
| 329 | |
| 330 /* rcg06302000 replaced access(F_OK) call with stat(). | |
| 331 * stat() will fail if the file doesn't exist, so it's | |
| 332 * equivalent behaviour. | |
| 333 */ | |
| 334 if ( stat(path, &sb) == 0 ) { | |
| 335 /* Check to make sure it's not already in list. | |
| 336 * This happens when we see a stick via symlink. | |
| 337 */ | |
| 338 duplicate = 0; | |
| 339 for (n=0; (n<numjoysticks) && !duplicate; ++n) { | |
| 340 if ( sb.st_rdev == dev_nums[n] ) { | |
| 341 duplicate = 1; | |
| 342 } | |
| 343 } | |
| 344 if (duplicate) { | |
| 345 continue; | |
| 346 } | |
| 347 | |
| 348 fd = open(path, O_RDONLY, 0); | |
| 349 if ( fd < 0 ) { | |
| 350 continue; | |
| 351 } | |
| 352 #ifdef USE_INPUT_EVENTS | |
| 353 #ifdef DEBUG_INPUT_EVENTS | |
| 354 printf("Checking %s\n", path); | |
| 355 #endif | |
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356 if ( (i == 0) && ! EV_IsJoystick(fd) ) { |
| 0 | 357 close(fd); |
| 358 continue; | |
| 359 } | |
| 360 #endif | |
| 361 close(fd); | |
| 362 | |
| 363 /* We're fine, add this joystick */ | |
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364 SDL_joylist[numjoysticks].fname =mystrdup(path); |
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365 if ( SDL_joylist[numjoysticks].fname ) { |
| 0 | 366 dev_nums[numjoysticks] = sb.st_rdev; |
| 367 ++numjoysticks; | |
| 368 } | |
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369 } else |
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370 break; |
| 0 | 371 } |
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372 |
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373 #ifdef USE_INPUT_EVENTS |
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374 /* This is a special case... |
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375 If the event devices are valid then the joystick devices |
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376 will be duplicates but without extra information about their |
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377 hats or balls. Unfortunately, the event devices can't |
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378 currently be calibrated, so it's a win-lose situation. |
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379 So : /dev/input/eventX = /dev/input/jsY = /dev/jsY |
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380 */ |
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381 if ( (i == 0) && (numjoysticks > 0) ) |
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382 break; |
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383 #endif |
| 0 | 384 } |
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385 #ifndef NO_LOGICAL_JOYSTICKS |
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386 numjoysticks += CountLogicalJoysticks(numjoysticks); |
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387 #endif |
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388 |
| 0 | 389 return(numjoysticks); |
| 390 } | |
| 391 | |
| 392 /* Function to get the device-dependent name of a joystick */ | |
| 393 const char *SDL_SYS_JoystickName(int index) | |
| 394 { | |
| 395 int fd; | |
| 396 static char namebuf[128]; | |
| 397 char *name; | |
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398 SDL_logical_joydecl(int oindex = index); |
| 0 | 399 |
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400 #ifndef NO_LOGICAL_JOYSTICKS |
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401 SDL_joylist_head(index, index); |
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402 #endif |
| 0 | 403 name = NULL; |
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404 fd = open(SDL_joylist[index].fname, O_RDONLY, 0); |
| 0 | 405 if ( fd >= 0 ) { |
| 406 if ( | |
| 407 #ifdef USE_INPUT_EVENTS | |
| 408 (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) <= 0) && | |
| 409 #endif | |
| 410 (ioctl(fd, JSIOCGNAME(sizeof(namebuf)), namebuf) <= 0) ) { | |
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411 name = SDL_joylist[index].fname; |
| 0 | 412 } else { |
| 413 name = namebuf; | |
| 414 } | |
| 415 close(fd); | |
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416 |
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417 #ifndef NO_LOGICAL_JOYSTICKS |
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418 if (SDL_joylist[oindex].prev || SDL_joylist[oindex].next) |
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419 LogicalSuffix(SDL_joylist[oindex].logicalno, namebuf, 128); |
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420 #endif |
| 0 | 421 } |
| 422 return name; | |
| 423 } | |
| 424 | |
| 425 static int allocate_hatdata(SDL_Joystick *joystick) | |
| 426 { | |
| 427 int i; | |
| 428 | |
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429 joystick->hwdata->hats = (struct hwdata_hat *)SDL_malloc( |
| 0 | 430 joystick->nhats * sizeof(struct hwdata_hat)); |
| 431 if ( joystick->hwdata->hats == NULL ) { | |
| 432 return(-1); | |
| 433 } | |
| 434 for ( i=0; i<joystick->nhats; ++i ) { | |
| 435 joystick->hwdata->hats[i].axis[0] = 1; | |
| 436 joystick->hwdata->hats[i].axis[1] = 1; | |
| 437 } | |
| 438 return(0); | |
| 439 } | |
| 440 | |
| 441 static int allocate_balldata(SDL_Joystick *joystick) | |
| 442 { | |
| 443 int i; | |
| 444 | |
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445 joystick->hwdata->balls = (struct hwdata_ball *)SDL_malloc( |
| 0 | 446 joystick->nballs * sizeof(struct hwdata_ball)); |
| 447 if ( joystick->hwdata->balls == NULL ) { | |
| 448 return(-1); | |
| 449 } | |
| 450 for ( i=0; i<joystick->nballs; ++i ) { | |
| 451 joystick->hwdata->balls[i].axis[0] = 0; | |
| 452 joystick->hwdata->balls[i].axis[1] = 0; | |
| 453 } | |
| 454 return(0); | |
| 455 } | |
| 456 | |
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457 static SDL_bool JS_ConfigJoystick(SDL_Joystick *joystick, int fd) |
| 0 | 458 { |
| 459 SDL_bool handled; | |
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460 unsigned char n; |
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461 int old_axes, tmp_naxes, tmp_nhats, tmp_nballs; |
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462 const char *name; |
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463 char *env, env_name[128]; |
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464 int i; |
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465 |
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466 handled = SDL_FALSE; |
| 0 | 467 |
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468 /* Default joystick device settings */ |
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469 if ( ioctl(fd, JSIOCGAXES, &n) < 0 ) { |
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470 joystick->naxes = 2; |
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471 } else { |
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472 joystick->naxes = n; |
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473 } |
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474 if ( ioctl(fd, JSIOCGBUTTONS, &n) < 0 ) { |
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475 joystick->nbuttons = 2; |
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476 } else { |
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477 joystick->nbuttons = n; |
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478 } |
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479 |
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480 name = SDL_SYS_JoystickName(joystick->index); |
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481 old_axes = joystick->naxes; |
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482 |
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483 /* Generic analog joystick support */ |
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484 if ( SDL_strstr(name, "Analog") == name && SDL_strstr(name, "-hat") ) { |
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485 if ( SDL_sscanf(name,"Analog %d-axis %*d-button %d-hat", |
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486 &tmp_naxes, &tmp_nhats) == 2 ) { |
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487 |
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488 joystick->naxes = tmp_naxes; |
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489 joystick->nhats = tmp_nhats; |
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490 |
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491 handled = SDL_TRUE; |
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492 } |
| 0 | 493 } |
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494 |
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495 /* Special joystick support */ |
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496 for ( i=0; i < SDL_TABLESIZE(special_joysticks); ++i ) { |
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497 if ( SDL_strcmp(name, special_joysticks[i].name) == 0 ) { |
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498 |
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499 joystick->naxes = special_joysticks[i].naxes; |
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500 joystick->nhats = special_joysticks[i].nhats; |
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501 joystick->nballs = special_joysticks[i].nballs; |
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502 |
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503 handled = SDL_TRUE; |
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504 break; |
|
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505 } |
| 0 | 506 } |
|
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507 |
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508 /* User environment joystick support */ |
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509 if ( (env = SDL_getenv("SDL_LINUX_JOYSTICK")) ) { |
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510 SDL_strcpy(env_name, ""); |
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511 if ( *env == '\'' && SDL_sscanf(env, "'%[^']s'", env_name) == 1 ) |
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512 env += SDL_strlen(env_name)+2; |
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513 else if ( SDL_sscanf(env, "%s", env_name) == 1 ) |
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514 env += SDL_strlen(env_name); |
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515 |
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516 if ( SDL_strcmp(name, env_name) == 0 ) { |
| 0 | 517 |
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518 if ( SDL_sscanf(env, "%d %d %d", &tmp_naxes, &tmp_nhats, |
|
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519 &tmp_nballs) == 3 ) { |
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520 |
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521 joystick->naxes = tmp_naxes; |
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522 joystick->nhats = tmp_nhats; |
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523 joystick->nballs = tmp_nballs; |
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524 |
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525 handled = SDL_TRUE; |
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526 } |
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527 } |
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528 } |
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529 |
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530 /* Remap hats and balls */ |
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531 if (handled) { |
| 0 | 532 if ( joystick->nhats > 0 ) { |
|
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533 if ( allocate_hatdata(joystick) < 0 ) { |
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534 joystick->nhats = 0; |
| 0 | 535 } |
| 536 } | |
| 537 if ( joystick->nballs > 0 ) { | |
| 538 if ( allocate_balldata(joystick) < 0 ) { | |
| 539 joystick->nballs = 0; | |
| 540 } | |
| 541 } | |
| 542 } | |
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543 |
| 0 | 544 return(handled); |
| 545 } | |
| 546 | |
| 547 #ifdef USE_INPUT_EVENTS | |
| 548 | |
| 549 static SDL_bool EV_ConfigJoystick(SDL_Joystick *joystick, int fd) | |
| 550 { | |
| 871 | 551 int i, t; |
| 0 | 552 unsigned long keybit[40]; |
| 553 unsigned long absbit[40]; | |
| 554 unsigned long relbit[40]; | |
| 555 | |
| 556 /* See if this device uses the new unified event API */ | |
| 557 if ( (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) >= 0) && | |
| 558 (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) >= 0) && | |
| 559 (ioctl(fd, EVIOCGBIT(EV_REL, sizeof(relbit)), relbit) >= 0) ) { | |
| 560 joystick->hwdata->is_hid = SDL_TRUE; | |
| 561 | |
| 562 /* Get the number of buttons, axes, and other thingamajigs */ | |
| 563 for ( i=BTN_JOYSTICK; i < KEY_MAX; ++i ) { | |
| 564 if ( test_bit(i, keybit) ) { | |
| 565 #ifdef DEBUG_INPUT_EVENTS | |
| 566 printf("Joystick has button: 0x%x\n", i); | |
| 567 #endif | |
| 568 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 569 joystick->nbuttons; | |
| 570 ++joystick->nbuttons; | |
| 571 } | |
| 572 } | |
| 573 for ( i=BTN_MISC; i < BTN_JOYSTICK; ++i ) { | |
| 574 if ( test_bit(i, keybit) ) { | |
| 575 #ifdef DEBUG_INPUT_EVENTS | |
| 576 printf("Joystick has button: 0x%x\n", i); | |
| 577 #endif | |
| 578 joystick->hwdata->key_map[i-BTN_MISC] = | |
| 579 joystick->nbuttons; | |
| 580 ++joystick->nbuttons; | |
| 581 } | |
| 582 } | |
| 583 for ( i=0; i<ABS_MAX; ++i ) { | |
| 584 /* Skip hats */ | |
| 585 if ( i == ABS_HAT0X ) { | |
| 586 i = ABS_HAT3Y; | |
| 587 continue; | |
| 588 } | |
| 589 if ( test_bit(i, absbit) ) { | |
| 590 int values[5]; | |
| 591 | |
|
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592 if ( ioctl(fd, EVIOCGABS(i), values) < 0 ) |
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593 continue; |
| 0 | 594 #ifdef DEBUG_INPUT_EVENTS |
| 595 printf("Joystick has absolute axis: %x\n", i); | |
| 596 printf("Values = { %d, %d, %d, %d, %d }\n", | |
| 597 values[0], values[1], | |
| 598 values[2], values[3], values[4]); | |
| 599 #endif /* DEBUG_INPUT_EVENTS */ | |
| 600 joystick->hwdata->abs_map[i] = joystick->naxes; | |
| 601 if ( values[1] == values[2] ) { | |
| 602 joystick->hwdata->abs_correct[i].used = 0; | |
| 603 } else { | |
| 604 joystick->hwdata->abs_correct[i].used = 1; | |
|
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605 joystick->hwdata->abs_correct[i].coef[0] = |
|
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606 (values[2] + values[1]) / 2 - values[4]; |
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607 joystick->hwdata->abs_correct[i].coef[1] = |
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608 (values[2] + values[1]) / 2 + values[4]; |
| 871 | 609 t = ((values[2] - values[1]) / 2 - 2 * values[4]); |
| 610 if ( t != 0 ) { | |
| 611 joystick->hwdata->abs_correct[i].coef[2] = (1 << 29) / t; | |
|
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612 } else { |
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613 joystick->hwdata->abs_correct[i].coef[2] = 0; |
| 871 | 614 } |
| 0 | 615 } |
| 616 ++joystick->naxes; | |
| 617 } | |
| 618 } | |
| 619 for ( i=ABS_HAT0X; i <= ABS_HAT3Y; i += 2 ) { | |
| 620 if ( test_bit(i, absbit) || test_bit(i+1, absbit) ) { | |
| 621 #ifdef DEBUG_INPUT_EVENTS | |
| 622 printf("Joystick has hat %d\n",(i-ABS_HAT0X)/2); | |
| 623 #endif | |
| 624 ++joystick->nhats; | |
| 625 } | |
| 626 } | |
| 627 if ( test_bit(REL_X, relbit) || test_bit(REL_Y, relbit) ) { | |
| 628 ++joystick->nballs; | |
| 629 } | |
| 630 | |
| 631 /* Allocate data to keep track of these thingamajigs */ | |
| 632 if ( joystick->nhats > 0 ) { | |
| 633 if ( allocate_hatdata(joystick) < 0 ) { | |
| 634 joystick->nhats = 0; | |
| 635 } | |
| 636 } | |
| 637 if ( joystick->nballs > 0 ) { | |
| 638 if ( allocate_balldata(joystick) < 0 ) { | |
| 639 joystick->nballs = 0; | |
| 640 } | |
| 641 } | |
| 642 } | |
| 643 return(joystick->hwdata->is_hid); | |
| 644 } | |
| 645 | |
| 646 #endif /* USE_INPUT_EVENTS */ | |
| 647 | |
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648 #ifndef NO_LOGICAL_JOYSTICKS |
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649 static void ConfigLogicalJoystick(SDL_Joystick *joystick) |
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650 { |
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651 struct joystick_logical_layout* layout; |
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652 |
|
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653 layout = SDL_joylist[joystick->index].map->layouts + |
|
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654 SDL_joylist[joystick->index].logicalno; |
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655 |
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656 joystick->nbuttons = layout->nbuttons; |
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657 joystick->nhats = layout->nhats; |
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658 joystick->naxes = layout->naxes; |
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659 joystick->nballs = layout->nballs; |
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660 } |
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661 #endif |
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662 |
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663 |
| 0 | 664 /* Function to open a joystick for use. |
| 665 The joystick to open is specified by the index field of the joystick. | |
| 666 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 667 It returns 0, or -1 if there is an error. | |
| 668 */ | |
| 669 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 670 { | |
| 671 int fd; | |
|
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672 SDL_logical_joydecl(int realindex); |
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673 SDL_logical_joydecl(SDL_Joystick *realjoy = NULL); |
| 0 | 674 |
| 675 /* Open the joystick and set the joystick file descriptor */ | |
|
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676 #ifndef NO_LOGICAL_JOYSTICKS |
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677 if (SDL_joylist[joystick->index].fname == NULL) { |
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678 SDL_joylist_head(realindex, joystick->index); |
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679 realjoy = SDL_JoystickOpen(realindex); |
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680 |
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681 if (realjoy == NULL) |
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682 return(-1); |
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683 |
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684 fd = realjoy->hwdata->fd; |
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685 |
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686 } else { |
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687 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
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688 } |
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689 SDL_joylist[joystick->index].joy = joystick; |
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690 #else |
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691 fd = open(SDL_joylist[joystick->index].fname, O_RDONLY, 0); |
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692 #endif |
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693 |
| 0 | 694 if ( fd < 0 ) { |
| 695 SDL_SetError("Unable to open %s\n", | |
| 696 SDL_joylist[joystick->index]); | |
| 697 return(-1); | |
| 698 } | |
| 699 joystick->hwdata = (struct joystick_hwdata *) | |
|
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700 SDL_malloc(sizeof(*joystick->hwdata)); |
| 0 | 701 if ( joystick->hwdata == NULL ) { |
| 702 SDL_OutOfMemory(); | |
| 703 close(fd); | |
| 704 return(-1); | |
| 705 } | |
|
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706 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
| 0 | 707 joystick->hwdata->fd = fd; |
| 708 | |
| 709 /* Set the joystick to non-blocking read mode */ | |
| 710 fcntl(fd, F_SETFL, O_NONBLOCK); | |
| 711 | |
| 712 /* Get the number of buttons and axes on the joystick */ | |
|
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713 #ifndef NO_LOGICAL_JOYSTICKS |
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714 if (realjoy) |
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715 ConfigLogicalJoystick(joystick); |
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716 else |
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717 #endif |
| 0 | 718 #ifdef USE_INPUT_EVENTS |
| 719 if ( ! EV_ConfigJoystick(joystick, fd) ) | |
| 720 #endif | |
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721 JS_ConfigJoystick(joystick, fd); |
|
38b1a98aeb11
Linux joystick cleanups from Alan Swanson
Sam Lantinga <slouken@libsdl.org>
parents:
408
diff
changeset
|
722 |
| 0 | 723 return(0); |
| 724 } | |
| 725 | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
726 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
727 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
728 static SDL_Joystick* FindLogicalJoystick( |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
729 SDL_Joystick *joystick, struct joystick_logical_values* v) |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
730 { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
731 SDL_Joystick *logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
732 register int i; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
733 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
734 i = joystick->index; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
735 logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
736 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
737 /* 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
|
738 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
739 for(;;) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
740 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
741 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
|
742 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
|
743 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
744 } |
|
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].next == 0) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
747 break; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
748 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
749 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
|
750 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
751 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
752 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
753 return logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
754 } |
|
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 static int LogicalJoystickButton( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
757 SDL_Joystick *joystick, Uint8 button, Uint8 state){ |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
758 struct joystick_logical_values* buttons; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
759 SDL_Joystick *logicaljoy = NULL; |
|
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 /* 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
|
762 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
763 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
|
764 return 0; |
|
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 /* 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
|
767 */ |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
768 buttons = SDL_joylist[joystick->index].map->buttons+button; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
769 logicaljoy = FindLogicalJoystick(joystick, buttons); |
|
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 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
772 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
773 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
774 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
|
775 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
776 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
777 } |
|
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 static int LogicalJoystickAxis( |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
780 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
|
781 { |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
782 struct joystick_logical_values* axes; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
783 SDL_Joystick *logicaljoy = NULL; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
784 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
785 /* 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
|
786 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
787 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
|
788 return 0; |
|
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 /* 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
|
791 */ |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
792 axes = SDL_joylist[joystick->index].map->axes+axis; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
793 logicaljoy = FindLogicalJoystick(joystick, axes); |
|
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 if (logicaljoy == NULL) |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
796 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
797 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
798 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
|
799 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
800 return 1; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
801 } |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
802 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
803 |
| 0 | 804 static __inline__ |
| 805 void HandleHat(SDL_Joystick *stick, Uint8 hat, int axis, int value) | |
| 806 { | |
| 807 struct hwdata_hat *the_hat; | |
| 808 const Uint8 position_map[3][3] = { | |
| 809 { SDL_HAT_LEFTUP, SDL_HAT_UP, SDL_HAT_RIGHTUP }, | |
| 810 { SDL_HAT_LEFT, SDL_HAT_CENTERED, SDL_HAT_RIGHT }, | |
| 811 { SDL_HAT_LEFTDOWN, SDL_HAT_DOWN, SDL_HAT_RIGHTDOWN } | |
| 812 }; | |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
813 SDL_logical_joydecl(SDL_Joystick *logicaljoy = NULL); |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
814 SDL_logical_joydecl(struct joystick_logical_values* hats = NULL); |
| 0 | 815 |
| 816 the_hat = &stick->hwdata->hats[hat]; | |
| 817 if ( value < 0 ) { | |
| 818 value = 0; | |
| 819 } else | |
| 820 if ( value == 0 ) { | |
| 821 value = 1; | |
| 822 } else | |
| 823 if ( value > 0 ) { | |
| 824 value = 2; | |
| 825 } | |
| 826 if ( value != the_hat->axis[axis] ) { | |
| 827 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
|
828 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
829 #ifndef NO_LOGICAL_JOYSTICKS |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
830 /* 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
|
831 */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
832 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
|
833 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
834 /* 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
|
835 */ |
|
953
cb5e1d0cad31
Backing out new changes, at Chris Nelson's request.
Sam Lantinga <slouken@libsdl.org>
parents:
914
diff
changeset
|
836 hats = SDL_joylist[stick->index].map->hats+hat; |
|
892
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
837 logicaljoy = FindLogicalJoystick(stick, hats); |
|
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 |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
840 if (logicaljoy) { |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
841 stick = logicaljoy; |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
842 hat = hats->nthing; |
|
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 #endif /* USE_LOGICAL_JOYSTICKS */ |
|
dc29e5907694
Date: Sun, 18 Apr 2004 16:09:53 -0400 (EDT)
Sam Lantinga <slouken@libsdl.org>
parents:
872
diff
changeset
|
845 |
| 0 | 846 SDL_PrivateJoystickHat(stick, hat, |
| 847 position_map[the_hat->axis[1]][the_hat->axis[0]]); | |
| 848 } | |
| 849 } | |
| 850 | |
| 851 static __inline__ | |
| 852 void HandleBall(SDL_Joystick *stick, Uint8 ball, int axis, int value) | |
| 853 { | |
| 854 stick->hwdata->balls[ball].axis[axis] += value; | |
| 855 } | |
| 856 | |
| 857 /* Function to update the state of a joystick - called as a device poll. | |
| 858 * This function shouldn't update the joystick structure directly, | |
| 859 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 860 * and update joystick device state. | |
| 861 */ | |
| 862 static __inline__ void JS_HandleEvents(SDL_Joystick *joystick) | |
| 863 { | |
| 864 struct js_event events[32]; | |
| 865 int i, len; | |
| 866 Uint8 other_axis; | |
| 867 | |
|
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868 #ifndef NO_LOGICAL_JOYSTICKS |
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869 if (SDL_joylist[joystick->index].fname == NULL) { |
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870 SDL_joylist_head(i, joystick->index); |
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871 return JS_HandleEvents(SDL_joylist[i].joy); |
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872 } |
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873 #endif |
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874 |
| 0 | 875 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 876 len /= sizeof(events[0]); | |
| 877 for ( i=0; i<len; ++i ) { | |
| 878 switch (events[i].type & ~JS_EVENT_INIT) { | |
| 879 case JS_EVENT_AXIS: | |
| 880 if ( events[i].number < joystick->naxes ) { | |
|
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881 #ifndef NO_LOGICAL_JOYSTICKS |
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882 if (!LogicalJoystickAxis(joystick, |
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883 events[i].number, events[i].value)) |
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884 #endif |
| 0 | 885 SDL_PrivateJoystickAxis(joystick, |
| 886 events[i].number, events[i].value); | |
| 887 break; | |
| 888 } | |
| 889 events[i].number -= joystick->naxes; | |
|
589
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890 other_axis = (events[i].number / 2); |
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891 if ( other_axis < joystick->nhats ) { |
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892 HandleHat(joystick, other_axis, |
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893 events[i].number%2, |
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894 events[i].value); |
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895 break; |
| 0 | 896 } |
| 897 events[i].number -= joystick->nhats*2; | |
| 898 other_axis = (events[i].number / 2); | |
| 899 if ( other_axis < joystick->nballs ) { | |
| 900 HandleBall(joystick, other_axis, | |
| 901 events[i].number%2, | |
| 902 events[i].value); | |
| 903 break; | |
| 904 } | |
| 905 break; | |
| 906 case JS_EVENT_BUTTON: | |
|
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907 #ifndef NO_LOGICAL_JOYSTICKS |
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908 if (!LogicalJoystickButton(joystick, |
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909 events[i].number, events[i].value)) |
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910 #endif |
| 0 | 911 SDL_PrivateJoystickButton(joystick, |
| 912 events[i].number, events[i].value); | |
| 913 break; | |
| 914 default: | |
| 915 /* ?? */ | |
| 916 break; | |
| 917 } | |
| 918 } | |
| 919 } | |
| 920 } | |
| 921 #ifdef USE_INPUT_EVENTS | |
| 922 static __inline__ int EV_AxisCorrect(SDL_Joystick *joystick, int which, int value) | |
| 923 { | |
| 924 struct axis_correct *correct; | |
| 925 | |
| 926 correct = &joystick->hwdata->abs_correct[which]; | |
| 927 if ( correct->used ) { | |
| 928 if ( value > correct->coef[0] ) { | |
| 929 if ( value < correct->coef[1] ) { | |
| 930 return 0; | |
| 931 } | |
| 932 value -= correct->coef[1]; | |
| 933 } else { | |
| 934 value -= correct->coef[0]; | |
| 935 } | |
| 936 value *= correct->coef[2]; | |
| 937 value >>= 14; | |
| 938 } | |
|
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939 |
| 0 | 940 /* Clamp and return */ |
| 1275 | 941 if ( value < -32768 ) return -32768; |
|
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942 if ( value > 32767 ) return 32767; |
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943 |
| 0 | 944 return value; |
| 945 } | |
| 946 | |
| 947 static __inline__ void EV_HandleEvents(SDL_Joystick *joystick) | |
| 948 { | |
| 949 struct input_event events[32]; | |
| 950 int i, len; | |
| 951 int code; | |
| 952 | |
|
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953 #ifndef NO_LOGICAL_JOYSTICKS |
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954 if (SDL_joylist[joystick->index].fname == NULL) { |
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955 SDL_joylist_head(i, joystick->index); |
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956 return EV_HandleEvents(SDL_joylist[i].joy); |
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957 } |
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958 #endif |
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959 |
| 0 | 960 while ((len=read(joystick->hwdata->fd, events, (sizeof events))) > 0) { |
| 961 len /= sizeof(events[0]); | |
| 962 for ( i=0; i<len; ++i ) { | |
| 963 code = events[i].code; | |
| 964 switch (events[i].type) { | |
| 965 case EV_KEY: | |
| 966 if ( code >= BTN_MISC ) { | |
| 967 code -= BTN_MISC; | |
|
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968 #ifndef NO_LOGICAL_JOYSTICKS |
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969 if (!LogicalJoystickButton(joystick, |
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970 joystick->hwdata->key_map[code], |
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971 events[i].value)) |
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972 #endif |
| 0 | 973 SDL_PrivateJoystickButton(joystick, |
| 974 joystick->hwdata->key_map[code], | |
| 975 events[i].value); | |
| 976 } | |
| 977 break; | |
| 978 case EV_ABS: | |
| 979 switch (code) { | |
| 980 case ABS_HAT0X: | |
| 981 case ABS_HAT0Y: | |
| 982 case ABS_HAT1X: | |
| 983 case ABS_HAT1Y: | |
| 984 case ABS_HAT2X: | |
| 985 case ABS_HAT2Y: | |
| 986 case ABS_HAT3X: | |
| 987 case ABS_HAT3Y: | |
| 988 code -= ABS_HAT0X; | |
| 989 HandleHat(joystick, code/2, code%2, | |
| 990 events[i].value); | |
| 991 break; | |
| 992 default: | |
| 993 events[i].value = EV_AxisCorrect(joystick, code, events[i].value); | |
|
892
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994 #ifndef NO_LOGICAL_JOYSTICKS |
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995 if (!LogicalJoystickAxis(joystick, |
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996 joystick->hwdata->abs_map[code], |
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997 events[i].value)) |
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998 #endif |
| 0 | 999 SDL_PrivateJoystickAxis(joystick, |
| 1000 joystick->hwdata->abs_map[code], | |
| 1001 events[i].value); | |
| 1002 break; | |
| 1003 } | |
| 1004 break; | |
| 1005 case EV_REL: | |
| 1006 switch (code) { | |
| 1007 case REL_X: | |
| 1008 case REL_Y: | |
| 1009 code -= REL_X; | |
| 1010 HandleBall(joystick, code/2, code%2, | |
| 1011 events[i].value); | |
| 1012 break; | |
| 1013 default: | |
| 1014 break; | |
| 1015 } | |
| 1016 break; | |
| 1017 default: | |
| 1018 break; | |
| 1019 } | |
| 1020 } | |
| 1021 } | |
| 1022 } | |
| 1023 #endif /* USE_INPUT_EVENTS */ | |
| 1024 | |
| 1025 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 1026 { | |
| 1027 int i; | |
| 1028 | |
| 1029 #ifdef USE_INPUT_EVENTS | |
| 1030 if ( joystick->hwdata->is_hid ) | |
| 1031 EV_HandleEvents(joystick); | |
| 1032 else | |
| 1033 #endif | |
| 1034 JS_HandleEvents(joystick); | |
| 1035 | |
| 1036 /* Deliver ball motion updates */ | |
| 1037 for ( i=0; i<joystick->nballs; ++i ) { | |
| 1038 int xrel, yrel; | |
| 1039 | |
| 1040 xrel = joystick->hwdata->balls[i].axis[0]; | |
| 1041 yrel = joystick->hwdata->balls[i].axis[1]; | |
| 1042 if ( xrel || yrel ) { | |
| 1043 joystick->hwdata->balls[i].axis[0] = 0; | |
| 1044 joystick->hwdata->balls[i].axis[1] = 0; | |
| 1045 SDL_PrivateJoystickBall(joystick, (Uint8)i, xrel, yrel); | |
| 1046 } | |
| 1047 } | |
| 1048 } | |
| 1049 | |
| 1050 /* Function to close a joystick after use */ | |
| 1051 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 1052 { | |
|
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1053 #ifndef NO_LOGICAL_JOYSTICKS |
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1054 register int i; |
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1055 if (SDL_joylist[joystick->index].fname == NULL) { |
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1056 SDL_joylist_head(i, joystick->index); |
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1057 SDL_JoystickClose(SDL_joylist[i].joy); |
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1058 } |
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1059 #endif |
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1060 |
| 0 | 1061 if ( joystick->hwdata ) { |
|
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1062 #ifndef NO_LOGICAL_JOYSTICKS |
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1063 if (SDL_joylist[joystick->index].fname != NULL) |
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1064 #endif |
| 0 | 1065 close(joystick->hwdata->fd); |
| 1066 if ( joystick->hwdata->hats ) { | |
|
1336
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1067 SDL_free(joystick->hwdata->hats); |
| 0 | 1068 } |
| 1069 if ( joystick->hwdata->balls ) { | |
|
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1070 SDL_free(joystick->hwdata->balls); |
| 0 | 1071 } |
|
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1072 SDL_free(joystick->hwdata); |
| 0 | 1073 joystick->hwdata = NULL; |
| 1074 } | |
| 1075 } | |
| 1076 | |
| 1077 /* Function to perform any system-specific joystick related cleanup */ | |
| 1078 void SDL_SYS_JoystickQuit(void) | |
| 1079 { | |
| 1080 int i; | |
| 1081 | |
|
892
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1082 for ( i=0; SDL_joylist[i].fname; ++i ) { |
|
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1083 SDL_free(SDL_joylist[i].fname); |
| 0 | 1084 } |
|
892
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1085 SDL_joylist[0].fname = NULL; |
| 0 | 1086 } |
| 1087 |