annotate src/SDL.c @ 3976:8582c6a5ca16 SDL-1.2

Added initial support for Nintendo DS, based on the work by Troy Davis (GPF)
author Sam Lantinga <slouken@libsdl.org>
date Mon, 25 Jun 2007 00:50:20 +0000
parents e85e65aec22f
children 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 /* Initialization code for SDL */
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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
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35
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36 /* Initialization/Cleanup routines */
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37 #if !SDL_JOYSTICK_DISABLED
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38 extern int SDL_JoystickInit(void);
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39 extern void SDL_JoystickQuit(void);
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40 #endif
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41 #if !SDL_CDROM_DISABLED
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42 extern int SDL_CDROMInit(void);
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43 extern void SDL_CDROMQuit(void);
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44 #endif
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45 #if !SDL_TIMERS_DISABLED
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46 extern void SDL_StartTicks(void);
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47 extern int SDL_TimerInit(void);
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48 extern void SDL_TimerQuit(void);
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49 #endif
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50
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51 /* The current SDL version */
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52 static SDL_version version =
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53 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL };
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54
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55 /* The initialized subsystems */
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56 static Uint32 SDL_initialized = 0;
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57 #if !SDL_TIMERS_DISABLED
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58 static Uint32 ticks_started = 0;
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59 #endif
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60
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61 #ifdef CHECK_LEAKS
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62 int surfaces_allocated = 0;
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63 #endif
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64
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65 int SDL_InitSubSystem(Uint32 flags)
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66 {
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67 #if !SDL_VIDEO_DISABLED
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68 /* Initialize the video/event subsystem */
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69 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) {
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70 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"),
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71 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) {
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72 return(-1);
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73 }
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74 SDL_initialized |= SDL_INIT_VIDEO;
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75 }
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76 #else
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77 if ( flags & SDL_INIT_VIDEO ) {
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78 SDL_SetError("SDL not built with video support");
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79 return(-1);
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80 }
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81 #endif
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82
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83 #if !SDL_AUDIO_DISABLED
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84 /* Initialize the audio subsystem */
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85 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) {
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86 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) {
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87 return(-1);
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88 }
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89 SDL_initialized |= SDL_INIT_AUDIO;
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90 }
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91 #else
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92 if ( flags & SDL_INIT_AUDIO ) {
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93 SDL_SetError("SDL not built with audio support");
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94 return(-1);
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95 }
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96 #endif
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97
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98 #if !SDL_TIMERS_DISABLED
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99 /* Initialize the timer subsystem */
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100 if ( ! ticks_started ) {
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101 SDL_StartTicks();
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102 ticks_started = 1;
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103 }
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104 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) {
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105 if ( SDL_TimerInit() < 0 ) {
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106 return(-1);
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107 }
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108 SDL_initialized |= SDL_INIT_TIMER;
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109 }
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110 #else
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111 if ( flags & SDL_INIT_TIMER ) {
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112 SDL_SetError("SDL not built with timer support");
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113 return(-1);
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114 }
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115 #endif
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116
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117 #if !SDL_JOYSTICK_DISABLED
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118 /* Initialize the joystick subsystem */
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119 if ( (flags & SDL_INIT_JOYSTICK) &&
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120 !(SDL_initialized & SDL_INIT_JOYSTICK) ) {
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121 if ( SDL_JoystickInit() < 0 ) {
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122 return(-1);
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123 }
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124 SDL_initialized |= SDL_INIT_JOYSTICK;
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125 }
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126 #else
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127 if ( flags & SDL_INIT_JOYSTICK ) {
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128 SDL_SetError("SDL not built with joystick support");
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129 return(-1);
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130 }
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131 #endif
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132
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133 #if !SDL_CDROM_DISABLED
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134 /* Initialize the CD-ROM subsystem */
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135 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) {
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136 if ( SDL_CDROMInit() < 0 ) {
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137 return(-1);
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138 }
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139 SDL_initialized |= SDL_INIT_CDROM;
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140 }
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141 #else
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142 if ( flags & SDL_INIT_CDROM ) {
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143 SDL_SetError("SDL not built with cdrom support");
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144 return(-1);
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145 }
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146 #endif
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147 return(0);
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148 }
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149
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150 int SDL_Init(Uint32 flags)
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151 {
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152 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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153 if (!pth_init()) {
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154 return -1;
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155 }
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156 #endif
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157
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158 /* Clear the error message */
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159 SDL_ClearError();
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160
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161 /* Initialize the desired subsystems */
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162 if ( SDL_InitSubSystem(flags) < 0 ) {
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163 return(-1);
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164 }
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165
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166 /* Everything is initialized */
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167 if ( !(flags & SDL_INIT_NOPARACHUTE) ) {
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168 SDL_InstallParachute();
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169 }
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170 return(0);
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171 }
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172
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173 void SDL_QuitSubSystem(Uint32 flags)
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174 {
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175 /* Shut down requested initialized subsystems */
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176 #if !SDL_CDROM_DISABLED
0
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177 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) {
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178 SDL_CDROMQuit();
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179 SDL_initialized &= ~SDL_INIT_CDROM;
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180 }
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181 #endif
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182 #if !SDL_JOYSTICK_DISABLED
0
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183 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) {
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184 SDL_JoystickQuit();
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185 SDL_initialized &= ~SDL_INIT_JOYSTICK;
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186 }
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187 #endif
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188 #if !SDL_TIMERS_DISABLED
0
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189 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) {
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190 SDL_TimerQuit();
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191 SDL_initialized &= ~SDL_INIT_TIMER;
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192 }
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193 #endif
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194 #if !SDL_AUDIO_DISABLED
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195 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) {
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196 SDL_AudioQuit();
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197 SDL_initialized &= ~SDL_INIT_AUDIO;
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198 }
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199 #endif
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200 #if !SDL_VIDEO_DISABLED
0
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201 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) {
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202 SDL_VideoQuit();
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203 SDL_initialized &= ~SDL_INIT_VIDEO;
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204 }
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205 #endif
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206 }
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207
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208 Uint32 SDL_WasInit(Uint32 flags)
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209 {
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210 if ( ! flags ) {
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211 flags = SDL_INIT_EVERYTHING;
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212 }
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213 return (SDL_initialized&flags);
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214 }
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215
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216 void SDL_Quit(void)
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217 {
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218 /* Quit all subsystems */
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219 #ifdef DEBUG_BUILD
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220 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout);
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221 #endif
0
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222 SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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223
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224 #ifdef CHECK_LEAKS
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225 #ifdef DEBUG_BUILD
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226 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout);
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227 #endif
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228
0
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229 /* Print the number of surfaces not freed */
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230 if ( surfaces_allocated != 0 ) {
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231 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
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232 surfaces_allocated);
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233 }
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234 #endif
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235 #ifdef DEBUG_BUILD
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236 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout);
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237 #endif
0
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238
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239 /* Uninstall any parachute signal handlers */
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240 SDL_UninstallParachute();
397
283d348cb624 Pth threading bug fix
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diff changeset
241
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242 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
397
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diff changeset
243 pth_kill();
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diff changeset
244 #endif
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245 #ifdef DEBUG_BUILD
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246 printf("[SDL_Quit] : Returning!\n"); fflush(stdout);
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247 #endif
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248
0
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249 }
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250
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251 /* Return the library version number */
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252 const SDL_version * SDL_Linked_Version(void)
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253 {
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254 return(&version);
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255 }
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256
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
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257 #if defined(__OS2__)
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258 /* Building for OS/2 */
1190
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259 #ifdef __WATCOMC__
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260
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261 #define INCL_DOSERRORS
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262 #define INCL_DOSEXCEPTIONS
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263 #include <os2.h>
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264
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265 /* Exception handler to prevent the Audio thread hanging, making a zombie process! */
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266 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
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267 PEXCEPTIONREGISTRATIONRECORD pERegRec,
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268 PCONTEXTRECORD pCtxRec,
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269 PVOID p)
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270 {
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271 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND)
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272 return XCPT_CONTINUE_SEARCH;
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273 if (pERepRec->fHandlerFlags & EH_UNWINDING)
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274 return XCPT_CONTINUE_SEARCH;
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275 if (pERepRec->fHandlerFlags & EH_NESTED_CALL)
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276 return XCPT_CONTINUE_SEARCH;
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277
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278 /* Do cleanup at every fatal exception! */
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279 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) &&
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280 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) &&
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281 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP)
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282 )
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283 {
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284 if (SDL_initialized & SDL_INIT_AUDIO)
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285 {
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286 /* This removes the zombie audio thread in case of emergency. */
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287 #ifdef DEBUG_BUILD
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288 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n");
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289 #endif
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290 SDL_CloseAudio();
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291 }
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292 }
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293 return (XCPT_CONTINUE_SEARCH);
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294 }
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295
173c063d4f55 OS/2 port!
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296
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297 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler};
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298
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299 /* The main DLL entry for DLL Initialization and Uninitialization: */
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300 unsigned _System LibMain(unsigned hmod, unsigned termination)
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301 {
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diff changeset
302 if (termination)
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303 {
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304 #ifdef DEBUG_BUILD
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305 /* printf("[SDL DLL Unintialization] : Removing exception handler\n"); */
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306 #endif
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307 DosUnsetExceptionHandler(&SDL_Main_xcpthand);
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diff changeset
308 return 1;
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diff changeset
309 } else
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310 {
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311 #ifdef DEBUG_BUILD
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312 /* Make stdout and stderr unbuffered! */
1190
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313 setbuf(stdout, NULL);
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314 setbuf(stderr, NULL);
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diff changeset
315 #endif
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diff changeset
316 /* Fire up exception handler */
1190
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317 #ifdef DEBUG_BUILD
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318 /* printf("[SDL DLL Initialization] : Setting exception handler\n"); */
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319 #endif
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320 /* Set exception handler */
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321 DosSetExceptionHandler(&SDL_Main_xcpthand);
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322
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323 return 1;
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324 }
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325 }
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326 #endif /* __WATCOMC__ */
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327
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328 #elif defined(__WIN32__) && !defined(__SYMBIAN32__)
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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 _DllMainCRTStartup( HANDLE hModule,
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336 DWORD ul_reason_for_call,
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337 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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diff changeset
348 #endif /* building DLL with Watcom C */
1330
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349
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d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
350 #endif /* OS/2 elif __WIN32__ */