Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 2395:ec8828881456 gsoc2008_iphone
XCode files for iPhone SDL libraries
author | Holmes Futrell <hfutrell@umail.ucsb.edu> |
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date | Fri, 18 Jul 2008 21:17:29 +0000 |
parents | 8f1ab2f7c722 |
children | 3f73c88c9abb f1d07ba2e275 0906692aa6a4 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* Initialization code for SDL */ | |
25 | |
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26 #include "SDL.h" |
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27 #include "SDL_fatal.h" |
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28 #if !SDL_VIDEO_DISABLED |
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29 #include "video/SDL_leaks.h" |
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30 #endif |
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31 |
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32 #if SDL_THREAD_PTH |
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33 #include <pth.h> |
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34 #endif |
0 | 35 |
36 /* Initialization/Cleanup routines */ | |
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37 #if !SDL_JOYSTICK_DISABLED |
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38 extern int SDL_JoystickInit(void); |
0 | 39 extern void SDL_JoystickQuit(void); |
40 #endif | |
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41 #if !SDL_CDROM_DISABLED |
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42 extern int SDL_CDROMInit(void); |
0 | 43 extern void SDL_CDROMQuit(void); |
44 #endif | |
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45 #if !SDL_TIMERS_DISABLED |
0 | 46 extern void SDL_StartTicks(void); |
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47 extern int SDL_TimerInit(void); |
0 | 48 extern void SDL_TimerQuit(void); |
49 #endif | |
50 | |
51 /* The initialized subsystems */ | |
52 static Uint32 SDL_initialized = 0; | |
53 static Uint32 ticks_started = 0; | |
54 | |
55 #ifdef CHECK_LEAKS | |
56 int surfaces_allocated = 0; | |
57 #endif | |
58 | |
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59 int |
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60 SDL_InitSubSystem(Uint32 flags) |
0 | 61 { |
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62 #if !SDL_VIDEO_DISABLED |
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63 /* Initialize the video/event subsystem */ |
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64 if ((flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO)) { |
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65 if (SDL_VideoInit(NULL, (flags & SDL_INIT_EVENTTHREAD)) < 0) { |
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66 return (-1); |
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67 } |
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68 SDL_initialized |= SDL_INIT_VIDEO; |
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69 } |
0 | 70 #else |
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71 if (flags & SDL_INIT_VIDEO) { |
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72 SDL_SetError("SDL not built with video support"); |
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73 return (-1); |
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74 } |
0 | 75 #endif |
76 | |
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77 #if !SDL_AUDIO_DISABLED |
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78 /* Initialize the audio subsystem */ |
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79 if ((flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO)) { |
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80 if (SDL_AudioInit(NULL) < 0) { |
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81 return (-1); |
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82 } |
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83 SDL_initialized |= SDL_INIT_AUDIO; |
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84 } |
0 | 85 #else |
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86 if (flags & SDL_INIT_AUDIO) { |
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87 SDL_SetError("SDL not built with audio support"); |
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88 return (-1); |
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89 } |
0 | 90 #endif |
91 | |
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92 #if !SDL_TIMERS_DISABLED |
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93 /* Initialize the timer subsystem */ |
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94 if (!ticks_started) { |
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95 SDL_StartTicks(); |
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96 ticks_started = 1; |
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97 } |
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98 if ((flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER)) { |
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99 if (SDL_TimerInit() < 0) { |
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100 return (-1); |
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101 } |
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102 SDL_initialized |= SDL_INIT_TIMER; |
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103 } |
0 | 104 #else |
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105 if (flags & SDL_INIT_TIMER) { |
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106 SDL_SetError("SDL not built with timer support"); |
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107 return (-1); |
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108 } |
0 | 109 #endif |
110 | |
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111 #if !SDL_JOYSTICK_DISABLED |
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112 /* Initialize the joystick subsystem */ |
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113 if ((flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK)) { |
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114 if (SDL_JoystickInit() < 0) { |
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115 return (-1); |
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116 } |
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117 SDL_initialized |= SDL_INIT_JOYSTICK; |
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118 } |
0 | 119 #else |
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120 if (flags & SDL_INIT_JOYSTICK) { |
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121 SDL_SetError("SDL not built with joystick support"); |
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122 return (-1); |
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123 } |
0 | 124 #endif |
125 | |
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126 #if !SDL_CDROM_DISABLED |
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127 /* Initialize the CD-ROM subsystem */ |
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128 if ((flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM)) { |
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129 if (SDL_CDROMInit() < 0) { |
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130 return (-1); |
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131 } |
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132 SDL_initialized |= SDL_INIT_CDROM; |
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133 } |
0 | 134 #else |
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135 if (flags & SDL_INIT_CDROM) { |
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136 SDL_SetError("SDL not built with cdrom support"); |
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137 return (-1); |
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138 } |
0 | 139 #endif |
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140 return (0); |
0 | 141 } |
142 | |
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143 int |
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144 SDL_Init(Uint32 flags) |
0 | 145 { |
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146 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
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147 if (!pth_init()) { |
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148 return -1; |
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149 } |
397 | 150 #endif |
151 | |
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152 /* Clear the error message */ |
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153 SDL_ClearError(); |
0 | 154 |
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155 /* Initialize the desired subsystems */ |
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156 if (SDL_InitSubSystem(flags) < 0) { |
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157 return (-1); |
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158 } |
0 | 159 |
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160 /* Everything is initialized */ |
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161 if (!(flags & SDL_INIT_NOPARACHUTE)) { |
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162 SDL_InstallParachute(); |
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163 } |
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164 return (0); |
0 | 165 } |
166 | |
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167 void |
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168 SDL_QuitSubSystem(Uint32 flags) |
0 | 169 { |
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170 /* Shut down requested initialized subsystems */ |
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171 #if !SDL_CDROM_DISABLED |
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172 if ((flags & SDL_initialized & SDL_INIT_CDROM)) { |
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173 SDL_CDROMQuit(); |
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174 SDL_initialized &= ~SDL_INIT_CDROM; |
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175 } |
0 | 176 #endif |
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177 #if !SDL_JOYSTICK_DISABLED |
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178 if ((flags & SDL_initialized & SDL_INIT_JOYSTICK)) { |
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179 SDL_JoystickQuit(); |
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180 SDL_initialized &= ~SDL_INIT_JOYSTICK; |
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181 } |
0 | 182 #endif |
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183 #if !SDL_TIMERS_DISABLED |
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184 if ((flags & SDL_initialized & SDL_INIT_TIMER)) { |
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185 SDL_TimerQuit(); |
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186 SDL_initialized &= ~SDL_INIT_TIMER; |
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187 } |
0 | 188 #endif |
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189 #if !SDL_AUDIO_DISABLED |
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190 if ((flags & SDL_initialized & SDL_INIT_AUDIO)) { |
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191 SDL_AudioQuit(); |
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192 SDL_initialized &= ~SDL_INIT_AUDIO; |
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193 } |
0 | 194 #endif |
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195 #if !SDL_VIDEO_DISABLED |
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196 if ((flags & SDL_initialized & SDL_INIT_VIDEO)) { |
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197 SDL_VideoQuit(); |
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198 SDL_initialized &= ~SDL_INIT_VIDEO; |
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199 } |
0 | 200 #endif |
201 } | |
202 | |
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203 Uint32 |
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204 SDL_WasInit(Uint32 flags) |
0 | 205 { |
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206 if (!flags) { |
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207 flags = SDL_INIT_EVERYTHING; |
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208 } |
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209 return (SDL_initialized & flags); |
0 | 210 } |
211 | |
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212 void |
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213 SDL_Quit(void) |
0 | 214 { |
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215 /* Quit all subsystems */ |
1190 | 216 #ifdef DEBUG_BUILD |
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217 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); |
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218 fflush(stdout); |
1190 | 219 #endif |
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220 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); |
0 | 221 |
222 #ifdef CHECK_LEAKS | |
1190 | 223 #ifdef DEBUG_BUILD |
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224 printf("[SDL_Quit] : CHECK_LEAKS\n"); |
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225 fflush(stdout); |
1190 | 226 #endif |
227 | |
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228 /* Print the number of surfaces not freed */ |
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229 if (surfaces_allocated != 0) { |
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230 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", |
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231 surfaces_allocated); |
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232 } |
0 | 233 #endif |
1190 | 234 #ifdef DEBUG_BUILD |
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235 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); |
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236 fflush(stdout); |
1190 | 237 #endif |
0 | 238 |
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239 /* Uninstall any parachute signal handlers */ |
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240 SDL_UninstallParachute(); |
397 | 241 |
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242 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
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243 pth_kill(); |
397 | 244 #endif |
1190 | 245 #ifdef DEBUG_BUILD |
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246 printf("[SDL_Quit] : Returning!\n"); |
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247 fflush(stdout); |
1190 | 248 #endif |
249 | |
0 | 250 } |
251 | |
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252 /* Get the library version number */ |
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253 void |
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254 SDL_GetVersion(SDL_version * ver) |
0 | 255 { |
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256 SDL_VERSION(ver); |
0 | 257 } |
258 | |
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259 #if defined(__OS2__) |
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260 /* Building for OS/2 */ |
1190 | 261 #ifdef __WATCOMC__ |
262 | |
263 #define INCL_DOSERRORS | |
264 #define INCL_DOSEXCEPTIONS | |
265 #include <os2.h> | |
266 | |
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267 /* Exception handler to prevent the Audio thread hanging, making a zombie process! */ |
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268 ULONG _System |
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269 SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec, |
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270 PEXCEPTIONREGISTRATIONRECORD pERegRec, |
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271 PCONTEXTRECORD pCtxRec, PVOID p) |
1190 | 272 { |
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273 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND) |
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274 return XCPT_CONTINUE_SEARCH; |
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275 if (pERepRec->fHandlerFlags & EH_UNWINDING) |
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276 return XCPT_CONTINUE_SEARCH; |
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277 if (pERepRec->fHandlerFlags & EH_NESTED_CALL) |
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278 return XCPT_CONTINUE_SEARCH; |
1190 | 279 |
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280 /* Do cleanup at every fatal exception! */ |
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281 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == |
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282 XCPT_FATAL_EXCEPTION) && (pERepRec->ExceptionNum != XCPT_BREAKPOINT) |
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283 && (pERepRec->ExceptionNum != XCPT_SINGLE_STEP)) { |
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284 if (SDL_initialized & SDL_INIT_AUDIO) { |
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285 /* This removes the zombie audio thread in case of emergency. */ |
1190 | 286 #ifdef DEBUG_BUILD |
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287 printf |
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288 ("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n"); |
1190 | 289 #endif |
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290 SDL_CloseAudio(); |
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291 } |
1190 | 292 } |
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293 return (XCPT_CONTINUE_SEARCH); |
1190 | 294 } |
295 | |
296 | |
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297 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = |
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298 { 0, SDL_Main_ExceptionHandler }; |
1190 | 299 |
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300 /* The main DLL entry for DLL Initialization and Uninitialization: */ |
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301 unsigned _System |
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302 LibMain(unsigned hmod, unsigned termination) |
1190 | 303 { |
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304 if (termination) { |
1190 | 305 #ifdef DEBUG_BUILD |
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306 /* printf("[SDL DLL Unintialization] : Removing exception handler\n"); */ |
1190 | 307 #endif |
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308 DosUnsetExceptionHandler(&SDL_Main_xcpthand); |
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309 return 1; |
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310 } else { |
1190 | 311 #ifdef DEBUG_BUILD |
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312 /* Make stdout and stderr unbuffered! */ |
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313 setbuf(stdout, NULL); |
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314 setbuf(stderr, NULL); |
1190 | 315 #endif |
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316 /* Fire up exception handler */ |
1190 | 317 #ifdef DEBUG_BUILD |
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318 /* printf("[SDL DLL Initialization] : Setting exception handler\n"); */ |
1190 | 319 #endif |
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320 /* Set exception handler */ |
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321 DosSetExceptionHandler(&SDL_Main_xcpthand); |
1190 | 322 |
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323 return 1; |
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324 } |
1190 | 325 } |
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326 #endif /* __WATCOMC__ */ |
1190 | 327 |
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328 #elif defined(__WIN32__) |
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329 |
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330 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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331 /* Need to include DllMain() on Watcom C for some reason.. */ |
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332 #define WIN32_LEAN_AND_MEAN |
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333 #include <windows.h> |
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334 |
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335 BOOL APIENTRY |
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336 _DllMainCRTStartup(HANDLE hModule, |
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337 DWORD ul_reason_for_call, LPVOID lpReserved) |
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338 { |
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339 switch (ul_reason_for_call) { |
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340 case DLL_PROCESS_ATTACH: |
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341 case DLL_THREAD_ATTACH: |
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342 case DLL_THREAD_DETACH: |
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343 case DLL_PROCESS_DETACH: |
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344 break; |
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345 } |
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346 return TRUE; |
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347 } |
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348 #endif /* building DLL with Watcom C */ |
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349 |
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350 #endif /* OS/2 elif __WIN32__ */ |
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351 |
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352 /* vi: set ts=4 sw=4 expandtab: */ |