annotate src/SDL.c @ 1658:e49147870aac SDL-1.3

glSDL support
author Sam Lantinga <slouken@libsdl.org>
date Mon, 01 May 2006 06:58:33 +0000
parents dc6b59e925a2
children 782fd950bd46 c121d94672cb e85e65aec22f
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 static Uint32 ticks_started = 0;
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58
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59 #ifdef CHECK_LEAKS
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60 int surfaces_allocated = 0;
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61 #endif
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62
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63 int SDL_InitSubSystem(Uint32 flags)
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64 {
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65 #if !SDL_VIDEO_DISABLED
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66 /* Initialize the video/event subsystem */
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67 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) {
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68 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"),
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69 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) {
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70 return(-1);
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71 }
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72 SDL_initialized |= SDL_INIT_VIDEO;
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73 }
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74 #else
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75 if ( flags & SDL_INIT_VIDEO ) {
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76 SDL_SetError("SDL not built with video support");
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77 return(-1);
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78 }
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79 #endif
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80
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81 #if !SDL_AUDIO_DISABLED
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82 /* Initialize the audio subsystem */
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83 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) {
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84 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) {
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85 return(-1);
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86 }
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87 SDL_initialized |= SDL_INIT_AUDIO;
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88 }
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89 #else
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90 if ( flags & SDL_INIT_AUDIO ) {
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91 SDL_SetError("SDL not built with audio support");
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92 return(-1);
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93 }
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94 #endif
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95
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96 #if !SDL_TIMERS_DISABLED
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97 /* Initialize the timer subsystem */
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98 if ( ! ticks_started ) {
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99 SDL_StartTicks();
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100 ticks_started = 1;
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101 }
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102 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) {
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103 if ( SDL_TimerInit() < 0 ) {
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104 return(-1);
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105 }
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106 SDL_initialized |= SDL_INIT_TIMER;
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107 }
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108 #else
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109 if ( flags & SDL_INIT_TIMER ) {
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110 SDL_SetError("SDL not built with timer support");
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111 return(-1);
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112 }
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113 #endif
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114
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115 #if !SDL_JOYSTICK_DISABLED
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116 /* Initialize the joystick subsystem */
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117 if ( (flags & SDL_INIT_JOYSTICK) &&
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118 !(SDL_initialized & SDL_INIT_JOYSTICK) ) {
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119 if ( SDL_JoystickInit() < 0 ) {
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120 return(-1);
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121 }
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122 SDL_initialized |= SDL_INIT_JOYSTICK;
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123 }
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124 #else
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125 if ( flags & SDL_INIT_JOYSTICK ) {
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126 SDL_SetError("SDL not built with joystick support");
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127 return(-1);
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128 }
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129 #endif
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130
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131 #if !SDL_CDROM_DISABLED
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132 /* Initialize the CD-ROM subsystem */
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133 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) {
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134 if ( SDL_CDROMInit() < 0 ) {
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135 return(-1);
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136 }
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137 SDL_initialized |= SDL_INIT_CDROM;
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138 }
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139 #else
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140 if ( flags & SDL_INIT_CDROM ) {
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141 SDL_SetError("SDL not built with cdrom support");
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142 return(-1);
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143 }
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144 #endif
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145 return(0);
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146 }
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147
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148 int SDL_Init(Uint32 flags)
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149 {
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150 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
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151 if (!pth_init()) {
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152 return -1;
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153 }
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154 #endif
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155
0
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156 /* Clear the error message */
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157 SDL_ClearError();
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158
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159 /* Initialize the desired subsystems */
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160 if ( SDL_InitSubSystem(flags) < 0 ) {
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161 return(-1);
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162 }
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163
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164 /* Everything is initialized */
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165 if ( !(flags & SDL_INIT_NOPARACHUTE) ) {
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166 SDL_InstallParachute();
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167 }
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168 return(0);
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169 }
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170
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171 void SDL_QuitSubSystem(Uint32 flags)
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172 {
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173 /* Shut down requested initialized subsystems */
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174 #if !SDL_CDROM_DISABLED
0
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175 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) {
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176 SDL_CDROMQuit();
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177 SDL_initialized &= ~SDL_INIT_CDROM;
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178 }
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179 #endif
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180 #if !SDL_JOYSTICK_DISABLED
0
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181 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) {
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182 SDL_JoystickQuit();
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183 SDL_initialized &= ~SDL_INIT_JOYSTICK;
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184 }
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185 #endif
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186 #if !SDL_TIMERS_DISABLED
0
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187 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) {
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188 SDL_TimerQuit();
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189 SDL_initialized &= ~SDL_INIT_TIMER;
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190 }
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191 #endif
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192 #if !SDL_AUDIO_DISABLED
0
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193 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) {
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194 SDL_AudioQuit();
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195 SDL_initialized &= ~SDL_INIT_AUDIO;
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196 }
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197 #endif
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198 #if !SDL_VIDEO_DISABLED
0
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199 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) {
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200 SDL_VideoQuit();
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201 SDL_initialized &= ~SDL_INIT_VIDEO;
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202 }
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203 #endif
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204 }
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205
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206 Uint32 SDL_WasInit(Uint32 flags)
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207 {
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208 if ( ! flags ) {
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209 flags = SDL_INIT_EVERYTHING;
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210 }
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211 return (SDL_initialized&flags);
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212 }
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213
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214 void SDL_Quit(void)
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215 {
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216 /* Quit all subsystems */
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217 #ifdef DEBUG_BUILD
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218 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout);
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219 #endif
0
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220 SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
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221
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222 #ifdef CHECK_LEAKS
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223 #ifdef DEBUG_BUILD
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224 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout);
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225 #endif
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226
0
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227 /* Print the number of surfaces not freed */
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228 if ( surfaces_allocated != 0 ) {
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229 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n",
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230 surfaces_allocated);
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231 }
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232 #endif
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233 #ifdef DEBUG_BUILD
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234 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout);
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235 #endif
0
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236
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237 /* Uninstall any parachute signal handlers */
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238 SDL_UninstallParachute();
397
283d348cb624 Pth threading bug fix
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diff changeset
239
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240 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH
397
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diff changeset
241 pth_kill();
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diff changeset
242 #endif
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243 #ifdef DEBUG_BUILD
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244 printf("[SDL_Quit] : Returning!\n"); fflush(stdout);
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245 #endif
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246
0
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247 }
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248
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249 /* Return the library version number */
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250 const SDL_version * SDL_Linked_Version(void)
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251 {
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252 return(&version);
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253 }
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254
1330
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255 #if defined(__OS2__)
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256 /* Building for OS/2 */
1190
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257 #ifdef __WATCOMC__
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258
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259 #define INCL_DOSERRORS
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260 #define INCL_DOSEXCEPTIONS
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261 #include <os2.h>
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262
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263 /* Exception handler to prevent the Audio thread hanging, making a zombie process! */
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264 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
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265 PEXCEPTIONREGISTRATIONRECORD pERegRec,
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266 PCONTEXTRECORD pCtxRec,
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267 PVOID p)
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268 {
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269 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND)
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270 return XCPT_CONTINUE_SEARCH;
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271 if (pERepRec->fHandlerFlags & EH_UNWINDING)
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272 return XCPT_CONTINUE_SEARCH;
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273 if (pERepRec->fHandlerFlags & EH_NESTED_CALL)
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274 return XCPT_CONTINUE_SEARCH;
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275
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276 /* Do cleanup at every fatal exception! */
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277 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) &&
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278 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) &&
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279 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP)
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280 )
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281 {
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282 if (SDL_initialized & SDL_INIT_AUDIO)
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283 {
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284 /* This removes the zombie audio thread in case of emergency. */
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285 #ifdef DEBUG_BUILD
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286 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n");
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287 #endif
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288 SDL_CloseAudio();
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289 }
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290 }
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291 return (XCPT_CONTINUE_SEARCH);
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292 }
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293
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294
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295 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler};
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296
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297 /* The main DLL entry for DLL Initialization and Uninitialization: */
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298 unsigned _System LibMain(unsigned hmod, unsigned termination)
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299 {
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300 if (termination)
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301 {
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302 #ifdef DEBUG_BUILD
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303 /* printf("[SDL DLL Unintialization] : Removing exception handler\n"); */
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304 #endif
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305 DosUnsetExceptionHandler(&SDL_Main_xcpthand);
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306 return 1;
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307 } else
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308 {
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diff changeset
309 #ifdef DEBUG_BUILD
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310 /* Make stdout and stderr unbuffered! */
1190
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311 setbuf(stdout, NULL);
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312 setbuf(stderr, NULL);
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313 #endif
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314 /* Fire up exception handler */
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315 #ifdef DEBUG_BUILD
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316 /* printf("[SDL DLL Initialization] : Setting exception handler\n"); */
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317 #endif
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318 /* Set exception handler */
1190
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319 DosSetExceptionHandler(&SDL_Main_xcpthand);
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diff changeset
320
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
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321 return 1;
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 769
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322 }
173c063d4f55 OS/2 port!
Ryan C. Gordon <icculus@icculus.org>
parents: 769
diff changeset
323 }
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
324 #endif /* __WATCOMC__ */
1190
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parents: 769
diff changeset
325
1402
d910939febfa Use consistent identifiers for the various platforms we support.
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parents: 1361
diff changeset
326 #elif defined(__WIN32__)
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parents: 1312
diff changeset
327
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parents: 1433
diff changeset
328 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL))
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parents: 1433
diff changeset
329 /* Need to include DllMain() on Watcom C for some reason.. */
1433
bb6839704ed6 SDL_windows.h is no longer necessary
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330 #define WIN32_LEAN_AND_MEAN
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parents: 1402
diff changeset
331 #include <windows.h>
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
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parents: 1312
diff changeset
332
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
333 BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule,
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
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parents: 1312
diff changeset
334 DWORD ul_reason_for_call,
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
335 LPVOID lpReserved )
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
336 {
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
337 switch (ul_reason_for_call) {
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
338 case DLL_PROCESS_ATTACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
339 case DLL_THREAD_ATTACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
340 case DLL_THREAD_DETACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
341 case DLL_PROCESS_DETACH:
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
342 break;
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
343 }
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
344 return TRUE;
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
345 }
1465
8dfa9a6d69a5 Updated WinCE support by Dmitry (with some tweaks)
Sam Lantinga <slouken@libsdl.org>
parents: 1433
diff changeset
346 #endif /* building DLL with Watcom C */
1330
450721ad5436 It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
347
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
348 #endif /* OS/2 elif __WIN32__ */