Mercurial > sdl-ios-xcode
annotate src/cdrom/win32/SDL_syscdrom.c @ 1330:450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
using Visual C++ 2005
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 06 Feb 2006 08:28:51 +0000 |
| parents | c9b51268668f |
| children | 3692456e7b0f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* Functions for system-level CD-ROM audio control */ | |
| 24 | |
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25 #include "SDL_windows.h" |
| 0 | 26 #include <mmsystem.h> |
| 27 | |
| 28 #include "SDL_error.h" | |
| 29 #include "SDL_cdrom.h" | |
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parents:
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30 #include "SDL_stdlib.h" |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
31 #include "SDL_string.h" |
| 0 | 32 #include "SDL_syscdrom.h" |
| 33 | |
| 34 /* This really broken?? */ | |
| 35 #define BROKEN_MCI_PAUSE /* Pausing actually stops play -- Doh! */ | |
| 36 | |
| 37 /* The maximum number of CD-ROM drives we'll detect (Don't change!) */ | |
| 38 #define MAX_DRIVES 26 | |
| 39 | |
| 40 /* A list of available CD-ROM drives */ | |
| 41 static char *SDL_cdlist[MAX_DRIVES]; | |
| 42 static MCIDEVICEID SDL_mciID[MAX_DRIVES]; | |
| 43 #ifdef BROKEN_MCI_PAUSE | |
| 44 static int SDL_paused[MAX_DRIVES]; | |
| 45 #endif | |
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46 static int SDL_CD_end_position; |
| 0 | 47 |
| 48 /* The system-dependent CD control functions */ | |
| 49 static const char *SDL_SYS_CDName(int drive); | |
| 50 static int SDL_SYS_CDOpen(int drive); | |
| 51 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 52 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 53 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 54 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 55 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 56 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 57 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 58 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 59 | |
| 60 | |
| 61 /* Add a CD-ROM drive to our list of valid drives */ | |
| 62 static void AddDrive(char *drive) | |
| 63 { | |
| 64 int i; | |
| 65 | |
| 66 if ( SDL_numcds < MAX_DRIVES ) { | |
| 67 /* Add this drive to our list */ | |
| 68 i = SDL_numcds; | |
| 69 SDL_cdlist[i] = (char *)malloc(strlen(drive)+1); | |
| 70 if ( SDL_cdlist[i] == NULL ) { | |
| 71 SDL_OutOfMemory(); | |
| 72 return; | |
| 73 } | |
| 74 strcpy(SDL_cdlist[i], drive); | |
| 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 ) { | |
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parents:
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102 snprintf(drive, SDL_arraysize(drive), "%c:\\", i); |
| 0 | 103 if ( GetDriveType(drive) == DRIVE_CDROM ) { |
| 104 AddDrive(drive); | |
| 105 } | |
| 106 } | |
| 107 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)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 ) { | |
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214 mci_status.dwTrack = cdrom->track[i - 1].id; |
| 0 | 215 mci_status.dwItem = MCI_STATUS_LENGTH; |
| 216 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
| 217 &mci_status) == 0 ) { | |
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218 cdrom->track[i - 1].length = MSF_TO_FRAMES( |
| 0 | 219 MCI_MSF_MINUTE(mci_status.dwReturn), |
| 220 MCI_MSF_SECOND(mci_status.dwReturn), | |
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221 MCI_MSF_FRAME(mci_status.dwReturn)) + 1; /* +1 to fix */ |
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222 /* MCI last track length bug */ |
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223 /* compute lead-out offset */ |
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224 cdrom->track[i].offset = cdrom->track[i - 1].offset + |
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225 cdrom->track[i - 1].length; |
| 0 | 226 cdrom->track[i].length = 0; |
| 227 okay = 1; | |
| 228 } | |
| 229 } | |
| 230 } | |
| 231 return(okay ? 0 : -1); | |
| 232 } | |
| 233 | |
| 234 /* Get CD-ROM status */ | |
| 235 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 236 { | |
| 237 CDstatus status; | |
| 238 MCI_STATUS_PARMS mci_status; | |
| 239 DWORD flags; | |
| 240 | |
| 241 flags = MCI_STATUS_ITEM | MCI_WAIT; | |
| 242 mci_status.dwItem = MCI_STATUS_MODE; | |
| 243 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) < 0 ) { | |
| 244 status = CD_ERROR; | |
| 245 } else { | |
| 246 switch (mci_status.dwReturn) { | |
| 247 case MCI_MODE_NOT_READY: | |
| 248 case MCI_MODE_OPEN: | |
| 249 status = CD_TRAYEMPTY; | |
| 250 break; | |
| 251 case MCI_MODE_STOP: | |
| 252 #ifdef BROKEN_MCI_PAUSE | |
| 253 if ( SDL_paused[cdrom->id] ) { | |
| 254 status = CD_PAUSED; | |
| 255 } else { | |
| 256 status = CD_STOPPED; | |
| 257 } | |
| 258 #else | |
| 259 status = CD_STOPPED; | |
| 260 #endif /* BROKEN_MCI_PAUSE */ | |
| 261 break; | |
| 262 case MCI_MODE_PLAY: | |
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263 #ifdef BROKEN_MCI_PAUSE |
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264 if ( SDL_paused[cdrom->id] ) { |
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265 status = CD_PAUSED; |
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266 } else { |
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267 status = CD_PLAYING; |
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268 } |
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269 #else |
| 0 | 270 status = CD_PLAYING; |
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271 #endif /* BROKEN_MCI_PAUSE */ |
| 0 | 272 break; |
| 273 case MCI_MODE_PAUSE: | |
| 274 status = CD_PAUSED; | |
| 275 break; | |
| 276 default: | |
| 277 status = CD_ERROR; | |
| 278 break; | |
| 279 } | |
| 280 } | |
| 281 if ( position ) { | |
| 282 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
| 283 mci_status.dwItem = MCI_STATUS_POSITION; | |
| 284 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, | |
| 285 &mci_status) == 0 ) { | |
| 286 *position = MSF_TO_FRAMES( | |
| 287 MCI_MSF_MINUTE(mci_status.dwReturn), | |
| 288 MCI_MSF_SECOND(mci_status.dwReturn), | |
| 289 MCI_MSF_FRAME(mci_status.dwReturn)); | |
| 290 } else { | |
| 291 *position = 0; | |
| 292 } | |
| 293 } else { | |
| 294 *position = 0; | |
| 295 } | |
| 296 } | |
| 297 return(status); | |
| 298 } | |
| 299 | |
| 300 /* Start play */ | |
| 301 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 302 { | |
| 303 MCI_PLAY_PARMS mci_play; | |
| 304 int m, s, f; | |
| 305 DWORD flags; | |
| 306 | |
| 307 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; | |
| 308 mci_play.dwCallback = 0; | |
| 309 FRAMES_TO_MSF(start, &m, &s, &f); | |
| 310 mci_play.dwFrom = MCI_MAKE_MSF(m, s, f); | |
| 311 FRAMES_TO_MSF(start+length, &m, &s, &f); | |
| 312 mci_play.dwTo = MCI_MAKE_MSF(m, s, f); | |
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313 SDL_CD_end_position = mci_play.dwTo; |
| 0 | 314 return(SDL_SYS_CDioctl(cdrom->id, MCI_PLAY, flags, &mci_play)); |
| 315 } | |
| 316 | |
| 317 /* Pause play */ | |
| 318 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 319 { | |
| 320 #ifdef BROKEN_MCI_PAUSE | |
| 321 SDL_paused[cdrom->id] = 1; | |
| 322 #endif | |
| 323 return(SDL_SYS_CDioctl(cdrom->id, MCI_PAUSE, MCI_WAIT, NULL)); | |
| 324 } | |
| 325 | |
| 326 /* Resume play */ | |
| 327 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 328 { | |
| 329 #ifdef BROKEN_MCI_PAUSE | |
| 330 MCI_STATUS_PARMS mci_status; | |
| 331 int okay; | |
| 332 int flags; | |
| 333 | |
| 334 okay = 0; | |
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335 /* Play from the current play position to the end position set earlier */ |
| 0 | 336 flags = MCI_STATUS_ITEM | MCI_WAIT; |
| 337 mci_status.dwItem = MCI_STATUS_POSITION; | |
| 338 if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { | |
| 339 MCI_PLAY_PARMS mci_play; | |
| 340 | |
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341 flags = MCI_FROM | MCI_TO | MCI_NOTIFY; |
| 0 | 342 mci_play.dwCallback = 0; |
| 343 mci_play.dwFrom = mci_status.dwReturn; | |
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344 mci_play.dwTo = SDL_CD_end_position; |
| 0 | 345 if (SDL_SYS_CDioctl(cdrom->id,MCI_PLAY,flags,&mci_play) == 0) { |
| 346 okay = 1; | |
| 347 SDL_paused[cdrom->id] = 0; | |
| 348 } | |
| 349 } | |
| 350 return(okay ? 0 : -1); | |
| 351 #else | |
| 352 return(SDL_SYS_CDioctl(cdrom->id, MCI_RESUME, MCI_WAIT, NULL)); | |
| 353 #endif /* BROKEN_MCI_PAUSE */ | |
| 354 } | |
| 355 | |
| 356 /* Stop play */ | |
| 357 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 358 { | |
| 359 return(SDL_SYS_CDioctl(cdrom->id, MCI_STOP, MCI_WAIT, NULL)); | |
| 360 } | |
| 361 | |
| 362 /* Eject the CD-ROM */ | |
| 363 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 364 { | |
| 365 return(SDL_SYS_CDioctl(cdrom->id, MCI_SET, MCI_SET_DOOR_OPEN, NULL)); | |
| 366 } | |
| 367 | |
| 368 /* Close the CD-ROM handle */ | |
| 369 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 370 { | |
| 371 SDL_SYS_CDioctl(cdrom->id, MCI_CLOSE, MCI_WAIT, NULL); | |
| 372 } | |
| 373 | |
| 374 void SDL_SYS_CDQuit(void) | |
| 375 { | |
| 376 int i; | |
| 377 | |
| 378 if ( SDL_numcds > 0 ) { | |
| 379 for ( i=0; i<SDL_numcds; ++i ) { | |
| 380 free(SDL_cdlist[i]); | |
| 381 } | |
| 382 SDL_numcds = 0; | |
| 383 } | |
| 384 } |