annotate src/joystick/macos/SDL_sysjoystick.c @ 4050:ef815c44c662 SDL-1.2

Warn Visual C++ users if they have a stale configure generated SDL_config.h
author Sam Lantinga <slouken@libsdl.org>
date Thu, 12 Jul 2007 02:51:58 +0000
parents 92947e3a18db
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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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
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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.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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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
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifdef SDL_JOYSTICK_MACOS
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25
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26 /* SDL stuff -- "SDL_sysjoystick.c"
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27 MacOS joystick functions by Frederick Reitberger
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28
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29 The code that follows is meant for SDL. Use at your own risk.
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30 */
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31
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32 #include <InputSprocket.h>
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33
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34 #include "SDL_joystick.h"
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35 #include "../SDL_sysjoystick.h"
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36 #include "../SDL_joystick_c.h"
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37
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38
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39 /* The max number of joysticks we will detect */
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40 #define MAX_JOYSTICKS 16
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41 /* Limit ourselves to 32 elements per device */
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42 #define kMaxReferences 32
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43
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44 #define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle))
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45 #define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum))
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46
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47
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48 static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS];
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49 static ISpElementListReference SYS_Elements[MAX_JOYSTICKS];
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50 static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS];
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51
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52 struct joystick_hwdata
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53 {
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54 char name[64];
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55 /* Uint8 id;*/
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56 ISpElementReference refs[kMaxReferences];
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57 /* gonna need some sort of mapping info */
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58 };
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59
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60
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61 /* Function to scan the system for joysticks.
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62 * Joystick 0 should be the system default joystick.
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63 * This function should return the number of available joysticks, or -1
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64 * on an unrecoverable fatal error.
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65 */
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66 int SDL_SYS_JoystickInit(void)
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67 {
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68 static ISpDeviceClass classes[4] = {
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69 kISpDeviceClass_Joystick,
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70 #if kISpDeviceClass_Gamepad
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71 kISpDeviceClass_Gamepad,
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72 #endif
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73 kISpDeviceClass_Wheel,
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74 0
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75 };
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76 OSErr err;
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77 int i;
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78 UInt32 count, numJoysticks;
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79
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80 if ( (Ptr)0 == (Ptr)ISpStartup ) {
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81 SDL_SetError("InputSprocket not installed");
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82 return -1; // InputSprocket not installed
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83 }
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84
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85 if( (Ptr)0 == (Ptr)ISpGetVersion ) {
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86 SDL_SetError("InputSprocket not version 1.1 or newer");
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87 return -1; // old version of ISp (not at least 1.1)
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88 }
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89
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90 ISpStartup();
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91
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92 /* Get all the joysticks */
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93 numJoysticks = 0;
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94 for ( i=0; classes[i]; ++i ) {
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95 count = 0;
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96 err = ISpDevices_ExtractByClass(
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97 classes[i],
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98 MAX_JOYSTICKS-numJoysticks,
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99 &count,
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100 &SYS_Joysticks[numJoysticks]);
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101 numJoysticks += count;
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102 }
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103
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104 for(i = 0; i < numJoysticks; i++)
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105 {
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106 ISpDevice_GetDefinition(
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107 SYS_Joysticks[i], sizeof(ISpDeviceDefinition),
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108 &SYS_DevDef[i]);
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109
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110 err = ISpElementList_New(
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111 0, NULL,
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112 &SYS_Elements[i], 0);
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113
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114 if (err) {
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115 SDL_OutOfMemory();
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116 return -1;
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117 }
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118
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119 ISpDevice_GetElementList(
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120 SYS_Joysticks[i],
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121 &SYS_Elements[i]);
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122 }
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123
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124 ISpDevices_Deactivate(numJoysticks, SYS_Joysticks);
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125
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126 return numJoysticks;
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127 }
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128
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129 /* Function to get the device-dependent name of a joystick */
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130 const char *SDL_SYS_JoystickName(int index)
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131 {
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132 static char name[64];
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133 int len;
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134
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135 /* convert pascal string to c-string */
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136 len = SYS_DevDef[index].deviceName[0];
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137 if ( len >= sizeof(name) ) {
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138 len = (sizeof(name) - 1);
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139 }
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140 SDL_memcpy(name, &SYS_DevDef[index].deviceName[1], len);
0
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141 name[len] = '\0';
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142
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143 return name;
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144 }
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145
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146 /* Function to open a joystick for use.
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147 The joystick to open is specified by the index field of the joystick.
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148 This should fill the nbuttons and naxes fields of the joystick structure.
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149 It returns 0, or -1 if there is an error.
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150 */
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151 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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152 {
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153 int index;
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154 UInt32 count, gotCount, count2;
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155 long numAxis, numButtons, numHats, numBalls;
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156
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157 count = kMaxReferences;
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158 count2 = 0;
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159 numAxis = numButtons = numHats = numBalls = 0;
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160
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161 index = joystick->index;
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162
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163 /* allocate memory for system specific hardware data */
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164 joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata));
0
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165 if (joystick->hwdata == NULL)
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166 {
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167 SDL_OutOfMemory();
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diff changeset
168 return(-1);
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diff changeset
169 }
1336
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diff changeset
170 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata));
1379
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diff changeset
171 SDL_strlcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index), SDL_arraysize(joystick->hwdata->name));
0
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172 joystick->name = joystick->hwdata->name;
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diff changeset
173
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diff changeset
174 ISpElementList_ExtractByKind(
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175 SYS_Elements[index],
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176 kISpElementKind_Axis,
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177 count,
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178 &gotCount,
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179 joystick->hwdata->refs);
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180
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181 numAxis = gotCount;
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182 count -= gotCount;
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diff changeset
183 count2 += gotCount;
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184
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diff changeset
185 ISpElementList_ExtractByKind(
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186 SYS_Elements[index],
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187 kISpElementKind_DPad,
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188 count,
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diff changeset
189 &gotCount,
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diff changeset
190 &(joystick->hwdata->refs[count2]));
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diff changeset
191
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diff changeset
192 numHats = gotCount;
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193 count -= gotCount;
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194 count2 += gotCount;
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diff changeset
195
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diff changeset
196 ISpElementList_ExtractByKind(
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197 SYS_Elements[index],
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198 kISpElementKind_Button,
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199 count,
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200 &gotCount,
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201 &(joystick->hwdata->refs[count2]));
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diff changeset
202
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203 numButtons = gotCount;
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diff changeset
204 count -= gotCount;
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diff changeset
205 count2 += gotCount;
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diff changeset
206
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207 joystick->naxes = numAxis;
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208 joystick->nhats = numHats;
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209 joystick->nballs = numBalls;
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diff changeset
210 joystick->nbuttons = numButtons;
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diff changeset
211
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diff changeset
212 ISpDevices_Activate(
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diff changeset
213 1,
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diff changeset
214 &SYS_Joysticks[index]);
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diff changeset
215
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diff changeset
216 return 0;
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parents:
diff changeset
217 }
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diff changeset
218
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219 /* Function to update the state of a joystick - called as a device poll.
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diff changeset
220 * This function shouldn't update the joystick structure directly,
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parents:
diff changeset
221 * but instead should call SDL_PrivateJoystick*() to deliver events
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parents:
diff changeset
222 * and update joystick device state.
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diff changeset
223 */
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diff changeset
224 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
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parents:
diff changeset
225 {
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diff changeset
226 int i, j;
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parents:
diff changeset
227 ISpAxisData a;
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diff changeset
228 ISpDPadData b;
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parents:
diff changeset
229 //ISpDeltaData c;
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parents:
diff changeset
230 ISpButtonData d;
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parents:
diff changeset
231
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diff changeset
232 for(i = 0, j = 0; i < joystick->naxes; i++, j++)
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diff changeset
233 {
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234 Sint16 value;
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parents:
diff changeset
235
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diff changeset
236 ISpElement_GetSimpleState(
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parents:
diff changeset
237 joystick->hwdata->refs[j],
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parents:
diff changeset
238 &a);
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parents:
diff changeset
239 value = (ISpSymmetricAxisToFloat(a)* 32767.0);
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parents:
diff changeset
240 if ( value != joystick->axes[i] ) {
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diff changeset
241 SDL_PrivateJoystickAxis(joystick, i, value);
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parents:
diff changeset
242 }
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parents:
diff changeset
243 }
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parents:
diff changeset
244
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parents:
diff changeset
245 for(i = 0; i < joystick->nhats; i++, j++)
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parents:
diff changeset
246 {
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parents:
diff changeset
247 Uint8 pos;
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parents:
diff changeset
248
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parents:
diff changeset
249 ISpElement_GetSimpleState(
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parents:
diff changeset
250 joystick->hwdata->refs[j],
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parents:
diff changeset
251 &b);
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parents:
diff changeset
252 switch(b) {
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parents:
diff changeset
253 case kISpPadIdle:
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parents:
diff changeset
254 pos = SDL_HAT_CENTERED;
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parents:
diff changeset
255 break;
74212992fb08 Initial revision
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parents:
diff changeset
256 case kISpPadLeft:
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parents:
diff changeset
257 pos = SDL_HAT_LEFT;
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parents:
diff changeset
258 break;
74212992fb08 Initial revision
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parents:
diff changeset
259 case kISpPadUpLeft:
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parents:
diff changeset
260 pos = SDL_HAT_LEFTUP;
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parents:
diff changeset
261 break;
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parents:
diff changeset
262 case kISpPadUp:
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parents:
diff changeset
263 pos = SDL_HAT_UP;
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parents:
diff changeset
264 break;
74212992fb08 Initial revision
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parents:
diff changeset
265 case kISpPadUpRight:
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parents:
diff changeset
266 pos = SDL_HAT_RIGHTUP;
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parents:
diff changeset
267 break;
74212992fb08 Initial revision
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parents:
diff changeset
268 case kISpPadRight:
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parents:
diff changeset
269 pos = SDL_HAT_RIGHT;
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parents:
diff changeset
270 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 case kISpPadDownRight:
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parents:
diff changeset
272 pos = SDL_HAT_RIGHTDOWN;
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parents:
diff changeset
273 break;
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parents:
diff changeset
274 case kISpPadDown:
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parents:
diff changeset
275 pos = SDL_HAT_DOWN;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
276 break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
277 case kISpPadDownLeft:
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parents:
diff changeset
278 pos = SDL_HAT_LEFTDOWN;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 if ( pos != joystick->hats[i] ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 SDL_PrivateJoystickHat(joystick, i, pos);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285
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parents:
diff changeset
286 for(i = 0; i < joystick->nballs; i++, j++)
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parents:
diff changeset
287 {
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parents:
diff changeset
288 /* ignore balls right now */
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parents:
diff changeset
289 }
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parents:
diff changeset
290
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parents:
diff changeset
291 for(i = 0; i < joystick->nbuttons; i++, j++)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 ISpElement_GetSimpleState(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 joystick->hwdata->refs[j],
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 &d);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 if ( d != joystick->buttons[i] ) {
74212992fb08 Initial revision
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parents:
diff changeset
297 SDL_PrivateJoystickButton(joystick, i, d);
74212992fb08 Initial revision
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parents:
diff changeset
298 }
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parents:
diff changeset
299 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301
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parents:
diff changeset
302 /* Function to close a joystick after use */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
74212992fb08 Initial revision
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parents:
diff changeset
304 {
74212992fb08 Initial revision
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parents:
diff changeset
305 int index;
74212992fb08 Initial revision
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parents:
diff changeset
306
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parents:
diff changeset
307 index = joystick->index;
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parents:
diff changeset
308
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 ISpDevices_Deactivate(
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 1,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 &SYS_Joysticks[index]);
74212992fb08 Initial revision
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parents:
diff changeset
312 }
74212992fb08 Initial revision
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parents:
diff changeset
313
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parents:
diff changeset
314 /* Function to perform any system-specific joystick related cleanup */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 void SDL_SYS_JoystickQuit(void)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 ISpShutdown();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
320 #endif /* SDL_JOYSTICK_MACOS */