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annotate src/cdrom/dc/SDL_syscdrom.c @ 509:dad72daf44b3

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Added initial support for Dreamcast (thanks HERO!)
author Sam Lantinga <slouken@libsdl.org>
date Sat, 05 Oct 2002 16:50:56 +0000
parents
children b8d311d90021
rev   line source
509
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
Sam Lantinga <slouken@libsdl.org>
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 Library General Public
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7 License as published by the Free Software Foundation; either
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
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8 version 2 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,
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
dad72daf44b3 Added initial support for Dreamcast (thanks HERO!)
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 BERO
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20 bero@geocities.co.jp
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21
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22 based on win32/SDL_syscdrom.c by
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23
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24 Sam Lantinga
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25 slouken@libsdl.org
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26 */
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27
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28 #ifdef SAVE_RCSID
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29 static char rcsid =
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30 "@(#) $Id$";
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31 #endif
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32
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33 /* Functions for system-level CD-ROM audio control */
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34
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35 #include <stdlib.h>
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36 #include <stdio.h>
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37 #include <dc/cdrom.h>
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38 #include <dc/spu.h>
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39
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40 #include "SDL_error.h"
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41 #include "SDL_cdrom.h"
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42 #include "SDL_syscdrom.h"
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43
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44 /* The system-dependent CD control functions */
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45 static const char *SDL_SYS_CDName(int drive);
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46 static int SDL_SYS_CDOpen(int drive);
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47 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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48 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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49 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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50 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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51 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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52 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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53 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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54 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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55
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56
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57 int SDL_SYS_CDInit(void)
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58 {
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59 /* Fill in our driver capabilities */
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60 SDL_CDcaps.Name = SDL_SYS_CDName;
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61 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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62 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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63 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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64 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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65 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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66 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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67 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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68 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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69 SDL_CDcaps.Close = SDL_SYS_CDClose;
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70
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71 return(0);
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72 }
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73
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74 static const char *SDL_SYS_CDName(int drive)
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75 {
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76 return "/cd";
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77 }
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78
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79 static int SDL_SYS_CDOpen(int drive)
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80 {
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81 return(drive);
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82 }
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83
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84 #define TRACK_CDDA 0
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85 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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86 {
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87 CDROM_TOC toc;
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88 int ret,i;
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89
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90 ret = cdrom_read_toc(&toc,0);
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91 if (ret!=ERR_OK) {
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92 return -1;
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93 }
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94
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95 cdrom->numtracks = TOC_TRACK(toc.last)-TOC_TRACK(toc.first)+1;
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96 for(i=0;i<cdrom->numtracks;i++) {
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97 unsigned long entry = toc.entry[i];
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98 cdrom->track[i].id = i+1;
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99 cdrom->track[i].type = (TOC_CTRL(toc.entry[i])==TRACK_CDDA)?SDL_AUDIO_TRACK:SDL_DATA_TRACK;
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100 cdrom->track[i].offset = TOC_LBA(entry)-150;
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101 cdrom->track[i].length = TOC_LBA((i+1<toc.last)?toc.entry[i+1]:toc.dunno)-TOC_LBA(entry);
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102 }
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103
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104 return 0;
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105 }
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106
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107 /* Get CD-ROM status */
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108 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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109 {
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110 CDstatus status;
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111 int ret,dc_status,disc_type;
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112
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113 ret = cdrom_get_status(&dc_status,&disc_type);
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114 if (ret!=ERR_OK) 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 SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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136 {
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137 int ret = cdrom_cdda_play(start-150,start-150+length,1,CDDA_SECTORS);
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138 return ret==ERR_OK?0:-1;
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139 }
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140
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141 /* Pause play */
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142 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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143 {
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144 int ret=cdrom_cdda_pause();
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145 return ret==ERR_OK?0:-1;
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146 }
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147
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148 /* Resume play */
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149 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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150 {
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151 int ret=cdrom_cdda_resume();
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152 return ret==ERR_OK?0:-1;
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153 }
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154
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155 /* Stop play */
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156 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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157 {
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158 int ret=cdrom_spin_down();
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159 return ret==ERR_OK?0:-1;
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160 }
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161
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162 /* Eject the CD-ROM */
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163 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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164 {
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165 return -1;
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166 }
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167
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168 /* Close the CD-ROM handle */
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169 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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170 {
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171 }
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172
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173 void SDL_SYS_CDQuit(void)
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174 {
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175
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176 }