Mercurial > sdl-ios-xcode
annotate src/cdrom/win32/SDL_syscdrom.c @ 746:72ef7ce609ef
Greatly simplified the SDL CPU info code
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 24 Nov 2003 09:22:12 +0000 |
| parents | f6ffac90895c |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2002
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 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 | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Functions for system-level CD-ROM audio control */ | |
| 29 | |
| 30 #include <stdlib.h> | |
| 31 #include <stdio.h> | |
| 32 #include <windows.h> | |
| 33 #include <mmsystem.h> | |
| 34 | |
| 35 #include "SDL_error.h" | |
| 36 #include "SDL_cdrom.h" | |
| 37 #include "SDL_syscdrom.h" | |
| 38 | |
| 39 /* This really broken?? */ | |
| 40 #define BROKEN_MCI_PAUSE /* Pausing actually stops play -- Doh! */ | |
| 41 | |
| 42 /* The maximum number of CD-ROM drives we'll detect (Don't change!) */ | |
| 43 #define MAX_DRIVES 26 | |
| 44 | |
| 45 /* A list of available CD-ROM drives */ | |
| 46 static char *SDL_cdlist[MAX_DRIVES]; | |
| 47 static MCIDEVICEID SDL_mciID[MAX_DRIVES]; | |
| 48 #ifdef BROKEN_MCI_PAUSE | |
| 49 static int SDL_paused[MAX_DRIVES]; | |
| 50 #endif | |
| 51 | |
| 52 /* The system-dependent CD control functions */ | |
| 53 static const char *SDL_SYS_CDName(int drive); | |
| 54 static int SDL_SYS_CDOpen(int drive); | |
| 55 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 56 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 57 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 58 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 59 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 60 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 61 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 62 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 63 | |
| 64 | |
| 65 /* Add a CD-ROM drive to our list of valid drives */ | |
| 66 static void AddDrive(char *drive) | |
| 67 { | |
| 68 int i; | |
| 69 | |
| 70 if ( SDL_numcds < MAX_DRIVES ) { | |
| 71 /* Add this drive to our list */ | |
| 72 i = SDL_numcds; | |
| 73 SDL_cdlist[i] = (char *)malloc(strlen(drive)+1); | |
| 74 if ( SDL_cdlist[i] == NULL ) { | |
| 75 SDL_OutOfMemory(); | |
| 76 return; | |
| 77 } | |
| 78 strcpy(SDL_cdlist[i], drive); | |
| 79 ++SDL_numcds; | |
| 80 #ifdef CDROM_DEBUG | |
| 81 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); | |
| 82 #endif | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 int SDL_SYS_CDInit(void) | |
| 87 { | |
| 88 /* checklist: Drive 'A' - 'Z' */ | |
| 89 int i; | |
| 90 char drive[4]; | |
| 91 | |
| 92 /* Fill in our driver capabilities */ | |
| 93 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 94 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 95 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 96 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 97 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 98 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 99 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 100 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 101 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 102 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 103 | |
| 104 /* Scan the system for CD-ROM drives */ | |
| 105 for ( i='A'; i<='Z'; ++i ) { | |
| 106 sprintf(drive, "%c:\\", i); | |
| 107 if ( GetDriveType(drive) == DRIVE_CDROM ) { | |
| 108 AddDrive(drive); | |
| 109 } | |
| 110 } | |
| 111 memset(SDL_mciID, 0, sizeof(SDL_mciID)); | |
| 112 return(0); | |
| 113 } | |
| 114 | |
| 115 /* General ioctl() CD-ROM command function */ | |
| 116 static int SDL_SYS_CDioctl(int id, UINT msg, DWORD flags, void *arg) | |
| 117 { | |
| 118 MCIERROR mci_error; | |
| 119 | |
| 120 mci_error = mciSendCommand(SDL_mciID[id], msg, flags, (DWORD)arg); | |
| 121 if ( mci_error ) { | |
| 122 char error[256]; | |
| 123 | |
| 124 mciGetErrorString(mci_error, error, 256); | |
| 125 SDL_SetError("mciSendCommand() error: %s", error); | |
| 126 } | |
| 127 return(!mci_error ? 0 : -1); | |
| 128 } | |
| 129 | |
| 130 static const char *SDL_SYS_CDName(int drive) | |
| 131 { | |
| 132 return(SDL_cdlist[drive]); | |
| 133 } | |
| 134 | |
| 135 static int SDL_SYS_CDOpen(int drive) | |
| 136 { | |
| 137 MCI_OPEN_PARMS mci_open; | |
| 138 MCI_SET_PARMS mci_set; | |
| 139 char device[3]; | |
| 140 DWORD flags; | |
| 141 | |
| 142 /* Open the requested device */ | |
| 143 mci_open.lpstrDeviceType = (LPCSTR) MCI_DEVTYPE_CD_AUDIO; | |
| 144 device[0] = *SDL_cdlist[drive]; | |
| 145 device[1] = ':'; | |
| 146 device[2] = '\0'; | |
| 147 mci_open.lpstrElementName = device; | |
| 148 flags = | |
| 149 (MCI_OPEN_TYPE|MCI_OPEN_SHAREABLE|MCI_OPEN_TYPE_ID|MCI_OPEN_ELEMENT); | |
| 150 if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { | |
| 151 flags &= ~MCI_OPEN_SHAREABLE; | |
| 152 if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { | |
| 153 return(-1); | |
| 154 } | |
| 155 } | |
| 156 SDL_mciID[drive] = mci_open.wDeviceID; | |
| 157 | |
| 158 /* Set the minute-second-frame time format */ | |
| 159 mci_set.dwTimeFormat = MCI_FORMAT_MSF; | |
| 160 SDL_SYS_CDioctl(drive, MCI_SET, MCI_SET_TIME_FORMAT, &mci_set); | |
| 161 | |
| 162 #ifdef BROKEN_MCI_PAUSE | |
| 163 SDL_paused[drive] = 0; | |
| 164 #endif | |
| 165 return(drive); | |
| 166 } | |
| 167 | |
| 168 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
| 169 { | |
| 170 MCI_STATUS_PARMS mci_status; | |
| 171 int i, okay; | |
| 172 DWORD flags; | |
| 173 | |
| 174 okay = 0; | |
| 175 mci_status.dwItem = MCI_STATUS_NUMBER_OF_TRACKS; | |
| 176 flags = MCI_STATUS_ITEM | MCI_WAIT; | |
| 177 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { | |
| 178 cdrom->numtracks = mci_status.dwReturn; | |
| 179 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | |
| 180 cdrom->numtracks = SDL_MAX_TRACKS; | |
| 181 } | |
| 182 /* Read all the track TOC entries */ | |
| 183 flags = MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT; | |
| 184 for ( i=0; i<cdrom->numtracks; ++i ) { | |
| 185 cdrom->track[i].id = i+1; | |
| 186 mci_status.dwTrack = cdrom->track[i].id; | |
| 187 #ifdef MCI_CDA_STATUS_TYPE_TRACK | |
| 188 mci_status.dwItem = MCI_CDA_STATUS_TYPE_TRACK; | |
| 189 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
| 190 &mci_status) < 0 ) { | |
| 191 break; | |
| 192 } | |
| 193 if ( mci_status.dwReturn == MCI_CDA_TRACK_AUDIO ) { | |
| 194 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
| 195 } else { | |
| 196 cdrom->track[i].type = SDL_DATA_TRACK; | |
| 197 } | |
| 198 #else | |
| 199 cdrom->track[i].type = SDL_AUDIO_TRACK; | |
| 200 #endif | |
| 201 mci_status.dwItem = MCI_STATUS_POSITION; | |
| 202 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
| 203 &mci_status) < 0 ) { | |
| 204 break; | |
| 205 } | |
| 206 cdrom->track[i].offset = MSF_TO_FRAMES( | |
| 207 MCI_MSF_MINUTE(mci_status.dwReturn), | |
| 208 MCI_MSF_SECOND(mci_status.dwReturn), | |
| 209 MCI_MSF_FRAME(mci_status.dwReturn)); | |
| 210 cdrom->track[i].length = 0; | |
| 211 if ( i > 0 ) { | |
| 212 cdrom->track[i-1].length = | |
| 213 cdrom->track[i].offset- | |
| 214 cdrom->track[i-1].offset; | |
| 215 } | |
| 216 } | |
| 217 if ( i == cdrom->numtracks ) { | |
|
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218 mci_status.dwTrack = cdrom->track[i - 1].id; |
| 0 | 219 mci_status.dwItem = MCI_STATUS_LENGTH; |
| 220 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
| 221 &mci_status) == 0 ) { | |
|
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222 cdrom->track[i - 1].length = MSF_TO_FRAMES( |
| 0 | 223 MCI_MSF_MINUTE(mci_status.dwReturn), |
| 224 MCI_MSF_SECOND(mci_status.dwReturn), | |
|
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225 MCI_MSF_FRAME(mci_status.dwReturn)) + 1; /* +1 to fix */ |
|
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226 /* MCI last track length bug */ |
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227 /* compute lead-out offset */ |
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228 cdrom->track[i].offset = cdrom->track[i - 1].offset + |
|
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229 cdrom->track[i - 1].length; |
| 0 | 230 cdrom->track[i].length = 0; |
| 231 okay = 1; | |
| 232 } | |
| 233 } | |
| 234 } | |
| 235 return(okay ? 0 : -1); | |
| 236 } | |
| 237 | |
| 238 /* Get CD-ROM status */ | |
| 239 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 240 { | |
| 241 CDstatus status; | |
| 242 MCI_STATUS_PARMS mci_status; | |
| 243 DWORD flags; | |
| 244 | |
| 245 flags = MCI_STATUS_ITEM | MCI_WAIT; | |
| 246 mci_status.dwItem = MCI_STATUS_MODE; | |
| 247 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) < 0 ) { | |
| 248 status = CD_ERROR; | |
| 249 } else { | |
| 250 switch (mci_status.dwReturn) { | |
| 251 case MCI_MODE_NOT_READY: | |
| 252 case MCI_MODE_OPEN: | |
| 253 status = CD_TRAYEMPTY; | |
| 254 break; | |
| 255 case MCI_MODE_STOP: | |
| 256 #ifdef BROKEN_MCI_PAUSE | |
| 257 if ( SDL_paused[cdrom->id] ) { | |
| 258 status = CD_PAUSED; | |
| 259 } else { | |
| 260 status = CD_STOPPED; | |
| 261 } | |
| 262 #else | |
| 263 status = CD_STOPPED; | |
| 264 #endif /* BROKEN_MCI_PAUSE */ | |
| 265 break; | |
| 266 case MCI_MODE_PLAY: | |
|
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267 #ifdef BROKEN_MCI_PAUSE |
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268 if ( SDL_paused[cdrom->id] ) { |
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269 status = CD_PAUSED; |
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270 } else { |
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271 status = CD_PLAYING; |
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272 } |
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273 #else |
| 0 | 274 status = CD_PLAYING; |
|
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275 #endif /* BROKEN_MCI_PAUSE */ |
| 0 | 276 break; |
| 277 case MCI_MODE_PAUSE: | |
| 278 status = CD_PAUSED; | |
| 279 break; | |
| 280 default: | |
| 281 status = CD_ERROR; | |
| 282 break; | |
| 283 } | |
| 284 } | |
| 285 if ( position ) { | |
| 286 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
| 287 mci_status.dwItem = MCI_STATUS_POSITION; | |
| 288 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
| 289 &mci_status) == 0 ) { | |
| 290 *position = MSF_TO_FRAMES( | |
| 291 MCI_MSF_MINUTE(mci_status.dwReturn), | |
| 292 MCI_MSF_SECOND(mci_status.dwReturn), | |
| 293 MCI_MSF_FRAME(mci_status.dwReturn)); | |
| 294 } else { | |
| 295 *position = 0; | |
| 296 } | |
| 297 } else { | |
| 298 *position = 0; | |
| 299 } | |
| 300 } | |
| 301 return(status); | |
| 302 } | |
| 303 | |
| 304 /* Start play */ | |
| 305 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 306 { | |
| 307 MCI_PLAY_PARMS mci_play; | |
| 308 int m, s, f; | |
| 309 DWORD flags; | |
| 310 | |
| 311 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; | |
| 312 mci_play.dwCallback = 0; | |
| 313 FRAMES_TO_MSF(start, &m, &s, &f); | |
| 314 mci_play.dwFrom = MCI_MAKE_MSF(m, s, f); | |
| 315 FRAMES_TO_MSF(start+length, &m, &s, &f); | |
| 316 mci_play.dwTo = MCI_MAKE_MSF(m, s, f); | |
| 317 return(SDL_SYS_CDioctl(cdrom->id, MCI_PLAY, flags, &mci_play)); | |
| 318 } | |
| 319 | |
| 320 /* Pause play */ | |
| 321 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 322 { | |
| 323 #ifdef BROKEN_MCI_PAUSE | |
| 324 SDL_paused[cdrom->id] = 1; | |
| 325 #endif | |
| 326 return(SDL_SYS_CDioctl(cdrom->id, MCI_PAUSE, MCI_WAIT, NULL)); | |
| 327 } | |
| 328 | |
| 329 /* Resume play */ | |
| 330 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 331 { | |
| 332 #ifdef BROKEN_MCI_PAUSE | |
| 333 MCI_STATUS_PARMS mci_status; | |
| 334 int okay; | |
| 335 int flags; | |
| 336 | |
| 337 okay = 0; | |
| 338 /* Play from the current play position to end of CD */ | |
| 339 flags = MCI_STATUS_ITEM | MCI_WAIT; | |
| 340 mci_status.dwItem = MCI_STATUS_POSITION; | |
| 341 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { | |
| 342 MCI_PLAY_PARMS mci_play; | |
| 343 | |
| 344 flags = MCI_FROM | MCI_NOTIFY; | |
| 345 mci_play.dwCallback = 0; | |
| 346 mci_play.dwFrom = mci_status.dwReturn; | |
| 347 if (SDL_SYS_CDioctl(cdrom->id,MCI_PLAY,flags,&mci_play) == 0) { | |
| 348 okay = 1; | |
| 349 SDL_paused[cdrom->id] = 0; | |
| 350 } | |
| 351 } | |
| 352 return(okay ? 0 : -1); | |
| 353 #else | |
| 354 return(SDL_SYS_CDioctl(cdrom->id, MCI_RESUME, MCI_WAIT, NULL)); | |
| 355 #endif /* BROKEN_MCI_PAUSE */ | |
| 356 } | |
| 357 | |
| 358 /* Stop play */ | |
| 359 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 360 { | |
| 361 return(SDL_SYS_CDioctl(cdrom->id, MCI_STOP, MCI_WAIT, NULL)); | |
| 362 } | |
| 363 | |
| 364 /* Eject the CD-ROM */ | |
| 365 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 366 { | |
| 367 return(SDL_SYS_CDioctl(cdrom->id, MCI_SET, MCI_SET_DOOR_OPEN, NULL)); | |
| 368 } | |
| 369 | |
| 370 /* Close the CD-ROM handle */ | |
| 371 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 372 { | |
| 373 SDL_SYS_CDioctl(cdrom->id, MCI_CLOSE, MCI_WAIT, NULL); | |
| 374 } | |
| 375 | |
| 376 void SDL_SYS_CDQuit(void) | |
| 377 { | |
| 378 int i; | |
| 379 | |
| 380 if ( SDL_numcds > 0 ) { | |
| 381 for ( i=0; i<SDL_numcds; ++i ) { | |
| 382 free(SDL_cdlist[i]); | |
| 383 } | |
| 384 SDL_numcds = 0; | |
| 385 } | |
| 386 } |