Mercurial > sdl-ios-xcode
annotate src/cdrom/mint/SDL_syscdrom.c @ 1502:d403a39389da
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 13 Mar 2006 01:16:16 +0000 |
| parents | d910939febfa |
| children | 92947e3a18db |
| rev | line source |
|---|---|
| 724 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 724 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
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22 #include "SDL_config.h" |
| 724 | 23 |
| 24 /* | |
| 25 Atari MetaDOS CD-ROM functions | |
| 26 | |
| 27 Patrice Mandin | |
| 28 */ | |
| 29 | |
| 30 #include <errno.h> | |
| 31 | |
| 32 #include <cdromio.h> | |
| 33 #include <metados.h> | |
| 34 | |
| 35 #include "SDL_cdrom.h" | |
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36 #include "../SDL_syscdrom.h" |
| 724 | 37 |
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38 /* Some ioctl() errno values which occur when the tray is empty */ |
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39 #ifndef ENOMEDIUM |
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40 #define ENOMEDIUM ENOENT |
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41 #endif |
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42 #define ERRNO_TRAYEMPTY(errno) \ |
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43 ((errno == EIO) || (errno == ENOENT) || \ |
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44 (errno == EINVAL) || (errno == ENOMEDIUM)) |
| 724 | 45 |
| 46 /* The maximum number of CD-ROM drives we'll detect */ | |
| 47 #define MAX_DRIVES 32 | |
| 48 | |
| 49 typedef struct { | |
| 50 unsigned char device[3]; /* Physical device letter + ':' + '\0' */ | |
| 51 metaopen_t metaopen; /* Infos on opened drive */ | |
| 52 } metados_drive_t; | |
| 53 | |
| 54 static metados_drive_t metados_drives[MAX_DRIVES]; | |
| 55 | |
| 56 /* The system-dependent CD control functions */ | |
| 57 static const char *SDL_SYS_CDName(int drive); | |
| 58 static int SDL_SYS_CDOpen(int drive); | |
| 59 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 60 static int SDL_SYS_CDioctl(int id, int command, void *arg); | |
| 61 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 62 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 63 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 64 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 65 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 66 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 67 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 68 | |
| 69 int SDL_SYS_CDInit(void) | |
| 70 { | |
| 71 metainit_t metainit={0,0,0,0}; | |
| 72 metaopen_t metaopen; | |
| 73 int i, handle; | |
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74 struct cdrom_subchnl info; |
| 724 | 75 |
| 76 Metainit(&metainit); | |
| 77 if (metainit.version == NULL) { | |
| 78 #ifdef DEBUG_CDROM | |
| 79 fprintf(stderr, "MetaDOS not installed\n"); | |
| 80 #endif | |
| 81 return -1; | |
| 82 } | |
| 83 | |
| 84 if (metainit.drives_map == 0) { | |
| 85 #ifdef DEBUG_CDROM | |
| 86 fprintf(stderr, "No MetaDOS devices present\n"); | |
| 87 #endif | |
| 88 return -1; | |
| 89 } | |
| 90 | |
| 91 SDL_numcds = 0; | |
| 92 | |
| 93 for (i='A'; i<='Z'; i++) { | |
| 94 metados_drives[SDL_numcds].device[0] = 0; | |
| 95 metados_drives[SDL_numcds].device[1] = ':'; | |
| 96 metados_drives[SDL_numcds].device[2] = 0; | |
| 97 | |
| 98 if (metainit.drives_map & (1<<(i-'A'))) { | |
| 99 handle = Metaopen(i, &metaopen); | |
| 100 if (handle == 0) { | |
| 101 | |
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102 info.cdsc_format = CDROM_MSF; |
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103 if ( (Metaioctl(i, METADOS_IOCTL_MAGIC, CDROMSUBCHNL, &info) == 0) || ERRNO_TRAYEMPTY(errno) ) { |
| 724 | 104 metados_drives[SDL_numcds].device[0] = i; |
| 105 ++SDL_numcds; | |
| 106 } | |
| 107 | |
| 108 Metaclose(i); | |
| 109 } | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 /* Fill in our driver capabilities */ | |
| 114 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 115 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 116 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 117 | |
| 118 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 119 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 120 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 121 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 122 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 123 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 124 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 125 | |
| 126 return 0; | |
| 127 } | |
| 128 | |
| 129 void SDL_SYS_CDQuit(void) | |
| 130 { | |
| 131 SDL_numcds = 0; | |
| 132 } | |
| 133 | |
| 134 static const char *SDL_SYS_CDName(int drive) | |
| 135 { | |
| 136 return(metados_drives[drive].device); | |
| 137 } | |
| 138 | |
| 139 static int SDL_SYS_CDOpen(int drive) | |
| 140 { | |
| 141 int handle; | |
| 142 | |
| 143 handle = Metaopen(metados_drives[drive].device[0], &(metados_drives[drive].metaopen)); | |
| 144 if (handle == 0) { | |
| 145 return drive; | |
| 146 } | |
| 147 | |
| 148 return -1; | |
| 149 } | |
| 150 | |
| 151 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 152 { | |
| 153 Metaclose(metados_drives[cdrom->id].device[0]); | |
| 154 } | |
| 155 | |
| 156 static int SDL_SYS_CDioctl(int id, int command, void *arg) | |
| 157 { | |
| 158 int retval; | |
| 159 | |
| 160 retval = Metaioctl(metados_drives[id].device[0], METADOS_IOCTL_MAGIC, command, arg); | |
| 161 if ( retval < 0 ) { | |
| 162 SDL_SetError("ioctl() error: %s", strerror(errno)); | |
| 163 } | |
| 164 return(retval); | |
| 165 } | |
| 166 | |
| 167 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
| 168 { | |
| 169 int i,okay; | |
| 170 struct cdrom_tochdr toc; | |
| 171 struct cdrom_tocentry entry; | |
| 172 | |
| 173 /* Use standard ioctl() */ | |
| 174 if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)<0) { | |
| 175 return -1; | |
| 176 } | |
| 177 | |
| 178 cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1; | |
| 179 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | |
| 180 cdrom->numtracks = SDL_MAX_TRACKS; | |
| 181 } | |
| 182 | |
| 183 /* Read all the track TOC entries */ | |
| 184 okay=1; | |
| 185 for ( i=0; i<=cdrom->numtracks; ++i ) { | |
| 186 if ( i == cdrom->numtracks ) { | |
| 187 cdrom->track[i].id = CDROM_LEADOUT; | |
| 188 } else { | |
| 189 cdrom->track[i].id = toc.cdth_trk0+i; | |
| 190 } | |
| 191 entry.cdte_track = cdrom->track[i].id; | |
| 192 entry.cdte_format = CDROM_MSF; | |
| 193 if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY, &entry) < 0 ) { | |
| 194 okay=0; | |
| 195 break; | |
| 196 } else { | |
| 197 if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) { | |
| 198 cdrom->track[i].type = SDL_DATA_TRACK; | |
| 199 } else { | |
| 200 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
| 201 } | |
| 202 cdrom->track[i].offset = MSF_TO_FRAMES( | |
| 203 entry.cdte_addr.msf.minute, | |
| 204 entry.cdte_addr.msf.second, | |
| 205 entry.cdte_addr.msf.frame); | |
| 206 cdrom->track[i].length = 0; | |
| 207 if ( i > 0 ) { | |
| 208 cdrom->track[i-1].length = cdrom->track[i].offset-cdrom->track[i-1].offset; | |
| 209 } | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 return(okay ? 0 : -1); | |
| 214 } | |
| 215 | |
| 216 /* Get CD-ROM status */ | |
| 217 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 218 { | |
| 219 CDstatus status; | |
| 220 struct cdrom_tochdr toc; | |
| 221 struct cdrom_subchnl info; | |
| 222 | |
| 223 info.cdsc_format = CDROM_MSF; | |
| 224 if ( SDL_SYS_CDioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) { | |
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225 if ( ERRNO_TRAYEMPTY(errno) ) { |
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226 status = CD_TRAYEMPTY; |
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227 } else { |
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228 status = CD_ERROR; |
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229 } |
| 724 | 230 } else { |
| 231 switch (info.cdsc_audiostatus) { | |
| 232 case CDROM_AUDIO_INVALID: | |
| 233 case CDROM_AUDIO_NO_STATUS: | |
| 234 /* Try to determine if there's a CD available */ | |
| 235 if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0) { | |
| 236 status = CD_STOPPED; | |
| 237 } else { | |
| 238 status = CD_TRAYEMPTY; | |
| 239 } | |
| 240 break; | |
| 241 case CDROM_AUDIO_COMPLETED: | |
| 242 status = CD_STOPPED; | |
| 243 break; | |
| 244 case CDROM_AUDIO_PLAY: | |
| 245 status = CD_PLAYING; | |
| 246 break; | |
| 247 case CDROM_AUDIO_PAUSED: | |
| 248 /* Workaround buggy CD-ROM drive */ | |
| 249 if ( info.cdsc_trk == CDROM_LEADOUT ) { | |
| 250 status = CD_STOPPED; | |
| 251 } else { | |
| 252 status = CD_PAUSED; | |
| 253 } | |
| 254 break; | |
| 255 default: | |
| 256 status = CD_ERROR; | |
| 257 break; | |
| 258 } | |
| 259 } | |
| 260 if ( position ) { | |
| 261 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
| 262 *position = MSF_TO_FRAMES( | |
| 263 info.cdsc_absaddr.msf.minute, | |
| 264 info.cdsc_absaddr.msf.second, | |
| 265 info.cdsc_absaddr.msf.frame); | |
| 266 } else { | |
| 267 *position = 0; | |
| 268 } | |
| 269 } | |
| 270 return(status); | |
| 271 } | |
| 272 | |
| 273 /* Start play */ | |
| 274 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 275 { | |
| 276 struct cdrom_msf playtime; | |
| 277 | |
| 278 FRAMES_TO_MSF(start, | |
| 279 &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); | |
| 280 FRAMES_TO_MSF(start+length, | |
| 281 &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); | |
| 282 #ifdef DEBUG_CDROM | |
| 283 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", | |
| 284 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, | |
| 285 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); | |
| 286 #endif | |
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287 |
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288 return SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime); |
| 724 | 289 } |
| 290 | |
| 291 /* Pause play */ | |
| 292 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 293 { | |
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294 return SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0); |
| 724 | 295 } |
| 296 | |
| 297 /* Resume play */ | |
| 298 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 299 { | |
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300 return SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0); |
| 724 | 301 } |
| 302 | |
| 303 /* Stop play */ | |
| 304 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 305 { | |
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306 return SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0); |
| 724 | 307 } |
| 308 | |
| 309 /* Eject the CD-ROM */ | |
| 310 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 311 { | |
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312 return SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0); |
| 724 | 313 } |