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annotate src/cdrom/dc/SDL_syscdrom.c @ 1622:5bbfc3e20e10

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Fixed bug #191 [I opted to go for a warning, since I often tweak configure.in, but don't want to rebuild the entire project] One thing that was lost in the switch from automake to the new build system is that there is now no rule to build configure from configure.in. IMHO, if configure.in gets changed, then at the very least, the build system should print out a warning (better, again IMHO, an error) about this fact. Else, you easily forget about this when modifying configure.in.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 13 Apr 2006 13:23:56 +0000
parents 11134dc42da8
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 }