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annotate src/cdrom/dc/SDL_syscdrom.c @ 1461:11134dc42da8

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Updated for Dreamcast KOS June 2005 snapshot: http://cadcdev.sourceforge.net/svn/snapshots/ http://gamedev.allusion.net/softprj/kos/dcsetup.php
author Sam Lantinga <slouken@libsdl.org>
date Thu, 02 Mar 2006 13:16:02 +0000
parents d910939febfa
children 92947e3a18db
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 /* Functions for system-level CD-ROM audio control */
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25
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26 #include <dc/cdrom.h>
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27 #include <dc/spu.h>
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28
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29 #include "SDL_cdrom.h"
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30 #include "../SDL_syscdrom.h"
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31
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32 /* The system-dependent CD control functions */
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33 static const char *SDL_SYS_CDName(int drive);
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34 static int SDL_SYS_CDOpen(int drive);
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35 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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36 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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37 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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38 static int SDL_SYS_CDPause(SDL_CD *cdrom);
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39 static int SDL_SYS_CDResume(SDL_CD *cdrom);
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40 static int SDL_SYS_CDStop(SDL_CD *cdrom);
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41 static int SDL_SYS_CDEject(SDL_CD *cdrom);
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42 static void SDL_SYS_CDClose(SDL_CD *cdrom);
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43
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44
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45 int SDL_SYS_CDInit(void)
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46 {
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47 /* Fill in our driver capabilities */
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48 SDL_CDcaps.Name = SDL_SYS_CDName;
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49 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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50 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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51 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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52 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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53 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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54 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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55 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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56 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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57 SDL_CDcaps.Close = SDL_SYS_CDClose;
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58
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59 return(0);
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60 }
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61
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62 static const char *SDL_SYS_CDName(int drive)
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63 {
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64 return "/cd";
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65 }
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66
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67 static int SDL_SYS_CDOpen(int drive)
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68 {
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69 return(drive);
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70 }
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71
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72 #define TRACK_CDDA 0
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73 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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74 {
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75 CDROM_TOC toc;
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76 int ret,i;
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77
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78 ret = cdrom_read_toc(&toc,0);
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79 if (ret!=ERR_OK) {
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80 return -1;
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81 }
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82
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83 cdrom->numtracks = TOC_TRACK(toc.last)-TOC_TRACK(toc.first)+1;
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84 for(i=0;i<cdrom->numtracks;i++) {
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85 unsigned long entry = toc.entry[i];
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86 cdrom->track[i].id = i+1;
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87 cdrom->track[i].type = (TOC_CTRL(toc.entry[i])==TRACK_CDDA)?SDL_AUDIO_TRACK:SDL_DATA_TRACK;
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88 cdrom->track[i].offset = TOC_LBA(entry)-150;
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89 cdrom->track[i].length = TOC_LBA((i+1<toc.last)?toc.entry[i+1]:toc.leadout_sector)-TOC_LBA(entry);
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90 }
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91
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92 return 0;
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93 }
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94
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95 /* Get CD-ROM status */
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96 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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97 {
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98 int ret,dc_status,disc_type;
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99
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100 ret = cdrom_get_status(&dc_status,&disc_type);
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101 if (ret!=ERR_OK) return CD_ERROR;
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102
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103 switch(dc_status) {
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104 // case CD_STATUS_BUSY:
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105 case CD_STATUS_PAUSED:
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106 return CD_PAUSED;
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107 case CD_STATUS_STANDBY:
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108 return CD_STOPPED;
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109 case CD_STATUS_PLAYING:
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110 return CD_PLAYING;
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111 // case CD_STATUS_SEEKING:
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112 // case CD_STATUS_SCANING:
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113 case CD_STATUS_OPEN:
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114 case CD_STATUS_NO_DISC:
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115 return CD_TRAYEMPTY;
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116 default:
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117 return CD_ERROR;
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118 }
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119 }
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120
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121 /* Start play */
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122 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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123 {
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124 int ret = cdrom_cdda_play(start-150,start-150+length,1,CDDA_SECTORS);
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125 return ret==ERR_OK?0:-1;
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126 }
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127
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128 /* Pause play */
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129 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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130 {
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131 int ret=cdrom_cdda_pause();
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132 return ret==ERR_OK?0:-1;
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133 }
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134
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135 /* Resume play */
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136 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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137 {
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138 int ret=cdrom_cdda_resume();
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139 return ret==ERR_OK?0:-1;
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140 }
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141
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142 /* Stop play */
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143 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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144 {
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145 int ret=cdrom_spin_down();
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146 return ret==ERR_OK?0:-1;
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147 }
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148
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149 /* Eject the CD-ROM */
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150 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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151 {
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152 return -1;
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153 }
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154
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155 /* Close the CD-ROM handle */
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156 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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157 {
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158 }
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159
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160 void SDL_SYS_CDQuit(void)
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161 {
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162
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163 }