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annotate src/cdrom/dc/SDL_syscdrom.c @ 2690:ca01c20274c0 gsoc2008_nds

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More work and some bugfixes on the graphics driver.
author Darren Alton <dalton@stevens.edu>
date Sat, 16 Aug 2008 07:44:35 +0000
parents c121d94672cb
children 99210400e8b9
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_CDROM_DC
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25
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26 /* Functions for system-level CD-ROM audio control */
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27
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28 #include <dc/cdrom.h>
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29 #include <dc/spu.h>
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30
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31 #include "SDL_cdrom.h"
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32 #include "../SDL_syscdrom.h"
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33
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34 /* The system-dependent CD control functions */
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35 static const char *SDL_SYS_CDName(int drive);
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36 static int SDL_SYS_CDOpen(int drive);
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37 static int SDL_SYS_CDGetTOC(SDL_CD * cdrom);
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38 static CDstatus SDL_SYS_CDStatus(SDL_CD * cdrom, int *position);
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39 static int SDL_SYS_CDPlay(SDL_CD * cdrom, int start, int length);
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40 static int SDL_SYS_CDPause(SDL_CD * cdrom);
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41 static int SDL_SYS_CDResume(SDL_CD * cdrom);
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42 static int SDL_SYS_CDStop(SDL_CD * cdrom);
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43 static int SDL_SYS_CDEject(SDL_CD * cdrom);
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44 static void SDL_SYS_CDClose(SDL_CD * cdrom);
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45
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46
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47 int
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48 SDL_SYS_CDInit(void)
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49 {
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50 /* Fill in our driver capabilities */
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51 SDL_CDcaps.Name = SDL_SYS_CDName;
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52 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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53 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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54 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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55 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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56 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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57 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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58 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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59 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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60 SDL_CDcaps.Close = SDL_SYS_CDClose;
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61
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62 return (0);
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63 }
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64
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65 static const char *
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66 SDL_SYS_CDName(int drive)
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67 {
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68 return "/cd";
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69 }
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70
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71 static int
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72 SDL_SYS_CDOpen(int drive)
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73 {
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74 return (drive);
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75 }
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76
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77 #define TRACK_CDDA 0
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78 static int
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79 SDL_SYS_CDGetTOC(SDL_CD * cdrom)
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80 {
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81 CDROM_TOC toc;
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82 int ret, i;
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83
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84 ret = cdrom_read_toc(&toc, 0);
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85 if (ret != ERR_OK) {
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86 return -1;
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87 }
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88
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89 cdrom->numtracks = TOC_TRACK(toc.last) - TOC_TRACK(toc.first) + 1;
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90 for (i = 0; i < cdrom->numtracks; i++) {
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91 unsigned long entry = toc.entry[i];
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92 cdrom->track[i].id = i + 1;
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93 cdrom->track[i].type =
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94 (TOC_CTRL(toc.entry[i]) ==
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95 TRACK_CDDA) ? SDL_AUDIO_TRACK : SDL_DATA_TRACK;
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96 cdrom->track[i].offset = TOC_LBA(entry) - 150;
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97 cdrom->track[i].length =
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98 TOC_LBA((i + 1 <
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99 toc.last) ? toc.entry[i + 1] : toc.leadout_sector) -
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100 TOC_LBA(entry);
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101 }
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102
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103 return 0;
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104 }
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105
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106 /* Get CD-ROM status */
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107 static CDstatus
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108 SDL_SYS_CDStatus(SDL_CD * cdrom, int *position)
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109 {
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110 int ret, dc_status, disc_type;
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111
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112 ret = cdrom_get_status(&dc_status, &disc_type);
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113 if (ret != ERR_OK)
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114 return CD_ERROR;
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115
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116 switch (dc_status) {
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117 // case CD_STATUS_BUSY:
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118 case CD_STATUS_PAUSED:
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119 return CD_PAUSED;
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120 case CD_STATUS_STANDBY:
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121 return CD_STOPPED;
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122 case CD_STATUS_PLAYING:
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123 return CD_PLAYING;
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124 // case CD_STATUS_SEEKING:
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125 // case CD_STATUS_SCANING:
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126 case CD_STATUS_OPEN:
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127 case CD_STATUS_NO_DISC:
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128 return CD_TRAYEMPTY;
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129 default:
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130 return CD_ERROR;
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131 }
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132 }
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133
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134 /* Start play */
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135 static int
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136 SDL_SYS_CDPlay(SDL_CD * cdrom, int start, int length)
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137 {
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138 int ret =
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139 cdrom_cdda_play(start - 150, start - 150 + length, 1, CDDA_SECTORS);
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140 return ret == ERR_OK ? 0 : -1;
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141 }
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142
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143 /* Pause play */
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144 static int
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145 SDL_SYS_CDPause(SDL_CD * cdrom)
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146 {
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147 int ret = cdrom_cdda_pause();
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148 return ret == ERR_OK ? 0 : -1;
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149 }
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150
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151 /* Resume play */
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152 static int
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153 SDL_SYS_CDResume(SDL_CD * cdrom)
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154 {
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155 int ret = cdrom_cdda_resume();
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156 return ret == ERR_OK ? 0 : -1;
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157 }
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158
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159 /* Stop play */
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160 static int
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161 SDL_SYS_CDStop(SDL_CD * cdrom)
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162 {
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163 int ret = cdrom_spin_down();
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164 return ret == ERR_OK ? 0 : -1;
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165 }
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166
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167 /* Eject the CD-ROM */
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168 static int
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169 SDL_SYS_CDEject(SDL_CD * cdrom)
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170 {
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171 return -1;
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172 }
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173
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174 /* Close the CD-ROM handle */
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175 static void
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176 SDL_SYS_CDClose(SDL_CD * cdrom)
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177 {
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178 }
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179
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180 void
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181 SDL_SYS_CDQuit(void)
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182 {
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183
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184 }
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185
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186 #endif /* SDL_CDROM_DC */
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187 /* vi: set ts=4 sw=4 expandtab: */