| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #ifdef SDL_CDROM_WIN32 |
| 25 | |
| 26 | /* Functions for system-level CD-ROM audio control */ |
| 27 | |
| 28 | #define WIN32_LEAN_AND_MEAN |
| 29 | #include <windows.h> |
| 30 | #include <mmsystem.h> |
| 31 | |
| 32 | #include "SDL_cdrom.h" |
| 33 | #include "../SDL_syscdrom.h" |
| 34 | |
| 35 | /* This really broken?? */ |
| 36 | #define BROKEN_MCI_PAUSE /* Pausing actually stops play -- Doh! */ |
| 37 | |
| 38 | /* The maximum number of CD-ROM drives we'll detect (Don't change!) */ |
| 39 | #define MAX_DRIVES 26 |
| 40 | |
| 41 | /* A list of available CD-ROM drives */ |
| 42 | static char *SDL_cdlist[MAX_DRIVES]; |
| 43 | static MCIDEVICEID SDL_mciID[MAX_DRIVES]; |
| 44 | #ifdef BROKEN_MCI_PAUSE |
| 45 | static int SDL_paused[MAX_DRIVES]; |
| 46 | #endif |
| 47 | static int SDL_CD_end_position; |
| 48 | |
| 49 | /* The system-dependent CD control functions */ |
| 50 | static const char *SDL_SYS_CDName(int drive); |
| 51 | static int SDL_SYS_CDOpen(int drive); |
| 52 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); |
| 53 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); |
| 54 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); |
| 55 | static int SDL_SYS_CDPause(SDL_CD *cdrom); |
| 56 | static int SDL_SYS_CDResume(SDL_CD *cdrom); |
| 57 | static int SDL_SYS_CDStop(SDL_CD *cdrom); |
| 58 | static int SDL_SYS_CDEject(SDL_CD *cdrom); |
| 59 | static void SDL_SYS_CDClose(SDL_CD *cdrom); |
| 60 | |
| 61 | |
| 62 | /* Add a CD-ROM drive to our list of valid drives */ |
| 63 | static void AddDrive(char *drive) |
| 64 | { |
| 65 | int i; |
| 66 | |
| 67 | if ( SDL_numcds < MAX_DRIVES ) { |
| 68 | /* Add this drive to our list */ |
| 69 | i = SDL_numcds; |
| 70 | SDL_cdlist[i] = SDL_strdup(drive); |
| 71 | if ( SDL_cdlist[i] == NULL ) { |
| 72 | SDL_OutOfMemory(); |
| 73 | return; |
| 74 | } |
| 75 | ++SDL_numcds; |
| 76 | #ifdef CDROM_DEBUG |
| 77 | fprintf(stderr, "Added CD-ROM drive: %s\n", drive); |
| 78 | #endif |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | int SDL_SYS_CDInit(void) |
| 83 | { |
| 84 | /* checklist: Drive 'A' - 'Z' */ |
| 85 | int i; |
| 86 | char drive[4]; |
| 87 | |
| 88 | /* Fill in our driver capabilities */ |
| 89 | SDL_CDcaps.Name = SDL_SYS_CDName; |
| 90 | SDL_CDcaps.Open = SDL_SYS_CDOpen; |
| 91 | SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; |
| 92 | SDL_CDcaps.Status = SDL_SYS_CDStatus; |
| 93 | SDL_CDcaps.Play = SDL_SYS_CDPlay; |
| 94 | SDL_CDcaps.Pause = SDL_SYS_CDPause; |
| 95 | SDL_CDcaps.Resume = SDL_SYS_CDResume; |
| 96 | SDL_CDcaps.Stop = SDL_SYS_CDStop; |
| 97 | SDL_CDcaps.Eject = SDL_SYS_CDEject; |
| 98 | SDL_CDcaps.Close = SDL_SYS_CDClose; |
| 99 | |
| 100 | /* Scan the system for CD-ROM drives */ |
| 101 | for ( i='A'; i<='Z'; ++i ) { |
| 102 | SDL_snprintf(drive, SDL_arraysize(drive), "%c:\\", i); |
| 103 | if ( GetDriveType(drive) == DRIVE_CDROM ) { |
| 104 | AddDrive(drive); |
| 105 | } |
| 106 | } |
| 107 | SDL_memset(SDL_mciID, 0, sizeof(SDL_mciID)); |
| 108 | return(0); |
| 109 | } |
| 110 | |
| 111 | /* General ioctl() CD-ROM command function */ |
| 112 | static int SDL_SYS_CDioctl(int id, UINT msg, DWORD flags, void *arg) |
| 113 | { |
| 114 | MCIERROR mci_error; |
| 115 | |
| 116 | mci_error = mciSendCommand(SDL_mciID[id], msg, flags, (DWORD_PTR)arg); |
| 117 | if ( mci_error ) { |
| 118 | char error[256]; |
| 119 | |
| 120 | mciGetErrorString(mci_error, error, 256); |
| 121 | SDL_SetError("mciSendCommand() error: %s", error); |
| 122 | } |
| 123 | return(!mci_error ? 0 : -1); |
| 124 | } |
| 125 | |
| 126 | static const char *SDL_SYS_CDName(int drive) |
| 127 | { |
| 128 | return(SDL_cdlist[drive]); |
| 129 | } |
| 130 | |
| 131 | static int SDL_SYS_CDOpen(int drive) |
| 132 | { |
| 133 | MCI_OPEN_PARMS mci_open; |
| 134 | MCI_SET_PARMS mci_set; |
| 135 | char device[3]; |
| 136 | DWORD flags; |
| 137 | |
| 138 | /* Open the requested device */ |
| 139 | mci_open.lpstrDeviceType = (LPCSTR) MCI_DEVTYPE_CD_AUDIO; |
| 140 | device[0] = *SDL_cdlist[drive]; |
| 141 | device[1] = ':'; |
| 142 | device[2] = '\0'; |
| 143 | mci_open.lpstrElementName = device; |
| 144 | flags = |
| 145 | (MCI_OPEN_TYPE|MCI_OPEN_SHAREABLE|MCI_OPEN_TYPE_ID|MCI_OPEN_ELEMENT); |
| 146 | if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { |
| 147 | flags &= ~MCI_OPEN_SHAREABLE; |
| 148 | if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { |
| 149 | return(-1); |
| 150 | } |
| 151 | } |
| 152 | SDL_mciID[drive] = mci_open.wDeviceID; |
| 153 | |
| 154 | /* Set the minute-second-frame time format */ |
| 155 | mci_set.dwTimeFormat = MCI_FORMAT_MSF; |
| 156 | SDL_SYS_CDioctl(drive, MCI_SET, MCI_SET_TIME_FORMAT, &mci_set); |
| 157 | |
| 158 | #ifdef BROKEN_MCI_PAUSE |
| 159 | SDL_paused[drive] = 0; |
| 160 | #endif |
| 161 | return(drive); |
| 162 | } |
| 163 | |
| 164 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) |
| 165 | { |
| 166 | MCI_STATUS_PARMS mci_status; |
| 167 | int i, okay; |
| 168 | DWORD flags; |
| 169 | |
| 170 | okay = 0; |
| 171 | mci_status.dwItem = MCI_STATUS_NUMBER_OF_TRACKS; |
| 172 | flags = MCI_STATUS_ITEM | MCI_WAIT; |
| 173 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { |
| 174 | cdrom->numtracks = mci_status.dwReturn; |
| 175 | if ( cdrom->numtracks > SDL_MAX_TRACKS ) { |
| 176 | cdrom->numtracks = SDL_MAX_TRACKS; |
| 177 | } |
| 178 | /* Read all the track TOC entries */ |
| 179 | flags = MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT; |
| 180 | for ( i=0; i<cdrom->numtracks; ++i ) { |
| 181 | cdrom->track[i].id = i+1; |
| 182 | mci_status.dwTrack = cdrom->track[i].id; |
| 183 | #ifdef MCI_CDA_STATUS_TYPE_TRACK |
| 184 | mci_status.dwItem = MCI_CDA_STATUS_TYPE_TRACK; |
| 185 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
| 186 | &mci_status) < 0 ) { |
| 187 | break; |
| 188 | } |
| 189 | if ( mci_status.dwReturn == MCI_CDA_TRACK_AUDIO ) { |
| 190 | cdrom->track[i].type = SDL_AUDIO_TRACK; |
| 191 | } else { |
| 192 | cdrom->track[i].type = SDL_DATA_TRACK; |
| 193 | } |
| 194 | #else |
| 195 | cdrom->track[i].type = SDL_AUDIO_TRACK; |
| 196 | #endif |
| 197 | mci_status.dwItem = MCI_STATUS_POSITION; |
| 198 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
| 199 | &mci_status) < 0 ) { |
| 200 | break; |
| 201 | } |
| 202 | cdrom->track[i].offset = MSF_TO_FRAMES( |
| 203 | MCI_MSF_MINUTE(mci_status.dwReturn), |
| 204 | MCI_MSF_SECOND(mci_status.dwReturn), |
| 205 | MCI_MSF_FRAME(mci_status.dwReturn)); |
| 206 | cdrom->track[i].length = 0; |
| 207 | if ( i > 0 ) { |
| 208 | cdrom->track[i-1].length = |
| 209 | cdrom->track[i].offset- |
| 210 | cdrom->track[i-1].offset; |
| 211 | } |
| 212 | } |
| 213 | if ( i == cdrom->numtracks ) { |
| 214 | mci_status.dwTrack = cdrom->track[i - 1].id; |
| 215 | mci_status.dwItem = MCI_STATUS_LENGTH; |
| 216 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
| 217 | &mci_status) == 0 ) { |
| 218 | cdrom->track[i - 1].length = MSF_TO_FRAMES( |
| 219 | MCI_MSF_MINUTE(mci_status.dwReturn), |
| 220 | MCI_MSF_SECOND(mci_status.dwReturn), |
| 221 | MCI_MSF_FRAME(mci_status.dwReturn)); |
| 222 | /* compute lead-out offset */ |
| 223 | cdrom->track[i].offset = cdrom->track[i - 1].offset + |
| 224 | cdrom->track[i - 1].length; |
| 225 | cdrom->track[i].length = 0; |
| 226 | okay = 1; |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | return(okay ? 0 : -1); |
| 231 | } |
| 232 | |
| 233 | /* Get CD-ROM status */ |
| 234 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) |
| 235 | { |
| 236 | CDstatus status; |
| 237 | MCI_STATUS_PARMS mci_status; |
| 238 | DWORD flags; |
| 239 | |
| 240 | flags = MCI_STATUS_ITEM | MCI_WAIT; |
| 241 | mci_status.dwItem = MCI_STATUS_MODE; |
| 242 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) < 0 ) { |
| 243 | status = CD_ERROR; |
| 244 | } else { |
| 245 | switch (mci_status.dwReturn) { |
| 246 | case MCI_MODE_NOT_READY: |
| 247 | case MCI_MODE_OPEN: |
| 248 | status = CD_TRAYEMPTY; |
| 249 | break; |
| 250 | case MCI_MODE_STOP: |
| 251 | #ifdef BROKEN_MCI_PAUSE |
| 252 | if ( SDL_paused[cdrom->id] ) { |
| 253 | status = CD_PAUSED; |
| 254 | } else { |
| 255 | status = CD_STOPPED; |
| 256 | } |
| 257 | #else |
| 258 | status = CD_STOPPED; |
| 259 | #endif /* BROKEN_MCI_PAUSE */ |
| 260 | break; |
| 261 | case MCI_MODE_PLAY: |
| 262 | #ifdef BROKEN_MCI_PAUSE |
| 263 | if ( SDL_paused[cdrom->id] ) { |
| 264 | status = CD_PAUSED; |
| 265 | } else { |
| 266 | status = CD_PLAYING; |
| 267 | } |
| 268 | #else |
| 269 | status = CD_PLAYING; |
| 270 | #endif /* BROKEN_MCI_PAUSE */ |
| 271 | break; |
| 272 | case MCI_MODE_PAUSE: |
| 273 | status = CD_PAUSED; |
| 274 | break; |
| 275 | default: |
| 276 | status = CD_ERROR; |
| 277 | break; |
| 278 | } |
| 279 | } |
| 280 | if ( position ) { |
| 281 | if ( status == CD_PLAYING || (status == CD_PAUSED) ) { |
| 282 | mci_status.dwItem = MCI_STATUS_POSITION; |
| 283 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, |
| 284 | &mci_status) == 0 ) { |
| 285 | *position = MSF_TO_FRAMES( |
| 286 | MCI_MSF_MINUTE(mci_status.dwReturn), |
| 287 | MCI_MSF_SECOND(mci_status.dwReturn), |
| 288 | MCI_MSF_FRAME(mci_status.dwReturn)); |
| 289 | } else { |
| 290 | *position = 0; |
| 291 | } |
| 292 | } else { |
| 293 | *position = 0; |
| 294 | } |
| 295 | } |
| 296 | return(status); |
| 297 | } |
| 298 | |
| 299 | /* Start play */ |
| 300 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) |
| 301 | { |
| 302 | MCI_PLAY_PARMS mci_play; |
| 303 | int m, s, f; |
| 304 | DWORD flags; |
| 305 | |
| 306 | flags = MCI_FROM | MCI_TO | MCI_NOTIFY; |
| 307 | mci_play.dwCallback = 0; |
| 308 | FRAMES_TO_MSF(start, &m, &s, &f); |
| 309 | mci_play.dwFrom = MCI_MAKE_MSF(m, s, f); |
| 310 | FRAMES_TO_MSF(start+length, &m, &s, &f); |
| 311 | mci_play.dwTo = MCI_MAKE_MSF(m, s, f); |
| 312 | SDL_CD_end_position = mci_play.dwTo; |
| 313 | return(SDL_SYS_CDioctl(cdrom->id, MCI_PLAY, flags, &mci_play)); |
| 314 | } |
| 315 | |
| 316 | /* Pause play */ |
| 317 | static int SDL_SYS_CDPause(SDL_CD *cdrom) |
| 318 | { |
| 319 | #ifdef BROKEN_MCI_PAUSE |
| 320 | SDL_paused[cdrom->id] = 1; |
| 321 | #endif |
| 322 | return(SDL_SYS_CDioctl(cdrom->id, MCI_PAUSE, MCI_WAIT, NULL)); |
| 323 | } |
| 324 | |
| 325 | /* Resume play */ |
| 326 | static int SDL_SYS_CDResume(SDL_CD *cdrom) |
| 327 | { |
| 328 | #ifdef BROKEN_MCI_PAUSE |
| 329 | MCI_STATUS_PARMS mci_status; |
| 330 | int okay; |
| 331 | int flags; |
| 332 | |
| 333 | okay = 0; |
| 334 | /* Play from the current play position to the end position set earlier */ |
| 335 | flags = MCI_STATUS_ITEM | MCI_WAIT; |
| 336 | mci_status.dwItem = MCI_STATUS_POSITION; |
| 337 | if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { |
| 338 | MCI_PLAY_PARMS mci_play; |
| 339 | |
| 340 | flags = MCI_FROM | MCI_TO | MCI_NOTIFY; |
| 341 | mci_play.dwCallback = 0; |
| 342 | mci_play.dwFrom = mci_status.dwReturn; |
| 343 | mci_play.dwTo = SDL_CD_end_position; |
| 344 | if (SDL_SYS_CDioctl(cdrom->id,MCI_PLAY,flags,&mci_play) == 0) { |
| 345 | okay = 1; |
| 346 | SDL_paused[cdrom->id] = 0; |
| 347 | } |
| 348 | } |
| 349 | return(okay ? 0 : -1); |
| 350 | #else |
| 351 | return(SDL_SYS_CDioctl(cdrom->id, MCI_RESUME, MCI_WAIT, NULL)); |
| 352 | #endif /* BROKEN_MCI_PAUSE */ |
| 353 | } |
| 354 | |
| 355 | /* Stop play */ |
| 356 | static int SDL_SYS_CDStop(SDL_CD *cdrom) |
| 357 | { |
| 358 | return(SDL_SYS_CDioctl(cdrom->id, MCI_STOP, MCI_WAIT, NULL)); |
| 359 | } |
| 360 | |
| 361 | /* Eject the CD-ROM */ |
| 362 | static int SDL_SYS_CDEject(SDL_CD *cdrom) |
| 363 | { |
| 364 | return(SDL_SYS_CDioctl(cdrom->id, MCI_SET, MCI_SET_DOOR_OPEN, NULL)); |
| 365 | } |
| 366 | |
| 367 | /* Close the CD-ROM handle */ |
| 368 | static void SDL_SYS_CDClose(SDL_CD *cdrom) |
| 369 | { |
| 370 | SDL_SYS_CDioctl(cdrom->id, MCI_CLOSE, MCI_WAIT, NULL); |
| 371 | } |
| 372 | |
| 373 | void SDL_SYS_CDQuit(void) |
| 374 | { |
| 375 | int i; |
| 376 | |
| 377 | if ( SDL_numcds > 0 ) { |
| 378 | for ( i=0; i<SDL_numcds; ++i ) { |
| 379 | SDL_free(SDL_cdlist[i]); |
| 380 | SDL_cdlist[i] = NULL; |
| 381 | } |
| 382 | SDL_numcds = 0; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | #endif /* SDL_CDROM_WIN32 */ |