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annotate src/cdrom/dc/SDL_syscdrom.c @ 4194:05c9e942cc46 SDL-1.2

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Preliminary work to support the Milan video bios, that will gives access to 24 or 32 bpp modes. I used the svga driver as model to dynamically build video modes list.
author Patrice Mandin <patmandin@gmail.com>
date Sat, 19 Sep 2009 12:46:00 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 SDL_SYS_CDInit(void)
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48 {
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49 /* Fill in our driver capabilities */
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50 SDL_CDcaps.Name = SDL_SYS_CDName;
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51 SDL_CDcaps.Open = SDL_SYS_CDOpen;
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52 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
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53 SDL_CDcaps.Status = SDL_SYS_CDStatus;
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54 SDL_CDcaps.Play = SDL_SYS_CDPlay;
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55 SDL_CDcaps.Pause = SDL_SYS_CDPause;
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56 SDL_CDcaps.Resume = SDL_SYS_CDResume;
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57 SDL_CDcaps.Stop = SDL_SYS_CDStop;
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58 SDL_CDcaps.Eject = SDL_SYS_CDEject;
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59 SDL_CDcaps.Close = SDL_SYS_CDClose;
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60
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61 return(0);
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62 }
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63
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64 static const char *SDL_SYS_CDName(int drive)
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65 {
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66 return "/cd";
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67 }
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68
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69 static int SDL_SYS_CDOpen(int drive)
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70 {
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71 return(drive);
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72 }
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73
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74 #define TRACK_CDDA 0
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75 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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76 {
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77 CDROM_TOC toc;
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78 int ret,i;
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79
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80 ret = cdrom_read_toc(&toc,0);
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81 if (ret!=ERR_OK) {
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82 return -1;
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83 }
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84
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85 cdrom->numtracks = TOC_TRACK(toc.last)-TOC_TRACK(toc.first)+1;
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86 for(i=0;i<cdrom->numtracks;i++) {
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87 unsigned long entry = toc.entry[i];
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88 cdrom->track[i].id = i+1;
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89 cdrom->track[i].type = (TOC_CTRL(toc.entry[i])==TRACK_CDDA)?SDL_AUDIO_TRACK:SDL_DATA_TRACK;
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90 cdrom->track[i].offset = TOC_LBA(entry)-150;
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91 cdrom->track[i].length = TOC_LBA((i+1<toc.last)?toc.entry[i+1]:toc.leadout_sector)-TOC_LBA(entry);
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92 }
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93
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94 return 0;
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95 }
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96
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97 /* Get CD-ROM status */
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98 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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99 {
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100 int ret,dc_status,disc_type;
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101
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102 ret = cdrom_get_status(&dc_status,&disc_type);
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103 if (ret!=ERR_OK) return CD_ERROR;
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104
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105 switch(dc_status) {
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106 // case CD_STATUS_BUSY:
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107 case CD_STATUS_PAUSED:
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108 return CD_PAUSED;
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109 case CD_STATUS_STANDBY:
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110 return CD_STOPPED;
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111 case CD_STATUS_PLAYING:
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112 return CD_PLAYING;
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113 // case CD_STATUS_SEEKING:
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114 // case CD_STATUS_SCANING:
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115 case CD_STATUS_OPEN:
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116 case CD_STATUS_NO_DISC:
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117 return CD_TRAYEMPTY;
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118 default:
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119 return CD_ERROR;
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120 }
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121 }
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122
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123 /* Start play */
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124 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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125 {
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126 int ret = cdrom_cdda_play(start-150,start-150+length,1,CDDA_SECTORS);
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127 return ret==ERR_OK?0:-1;
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128 }
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129
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130 /* Pause play */
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131 static int SDL_SYS_CDPause(SDL_CD *cdrom)
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132 {
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133 int ret=cdrom_cdda_pause();
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134 return ret==ERR_OK?0:-1;
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135 }
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136
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137 /* Resume play */
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138 static int SDL_SYS_CDResume(SDL_CD *cdrom)
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139 {
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140 int ret=cdrom_cdda_resume();
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141 return ret==ERR_OK?0:-1;
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142 }
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143
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144 /* Stop play */
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145 static int SDL_SYS_CDStop(SDL_CD *cdrom)
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146 {
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147 int ret=cdrom_spin_down();
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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 /* Eject the CD-ROM */
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152 static int SDL_SYS_CDEject(SDL_CD *cdrom)
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153 {
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154 return -1;
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155 }
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156
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157 /* Close the CD-ROM handle */
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158 static void SDL_SYS_CDClose(SDL_CD *cdrom)
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159 {
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160 }
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161
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162 void SDL_SYS_CDQuit(void)
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163 {
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164
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165 }
1635
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166
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167 #endif /* SDL_CDROM_DC */