Mercurial > sdl-ios-xcode
annotate src/cdrom/os2/SDL_syscdrom.c @ 1379:c0a74f199ecf
Use only safe string functions
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Feb 2006 23:46:34 +0000 |
| parents | 19418e4422cb |
| children | d910939febfa |
| rev | line source |
|---|---|
| 1190 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 1190 | 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 |
| 1190 | 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. |
| 1190 | 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. |
| 1190 | 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 |
| 1190 | 18 |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
| 22 | |
| 23 /* Functions for system-level CD-ROM audio control */ | |
| 24 | |
| 25 #define INCL_MCIOS2 | |
| 26 #include <os2.h> | |
| 27 #include <os2me.h> | |
| 28 | |
| 29 #include "SDL_cdrom.h" | |
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30 #include "../SDL_syscdrom.h" |
| 1190 | 31 |
| 32 /* Size of MCI result buffer (in bytes) */ | |
| 33 #define MCI_CMDRETBUFSIZE 128 | |
| 34 | |
| 35 /* The maximum number of CD-ROM drives we'll detect */ | |
| 36 #define MAX_DRIVES 16 | |
| 37 | |
| 38 /* A list of available CD-ROM drives */ | |
| 39 static char *SDL_cdlist[MAX_DRIVES]; | |
| 40 //static dev_t SDL_cdmode[MAX_DRIVES]; | |
| 41 | |
| 42 /* The system-dependent CD control functions */ | |
| 43 static const char *SDL_SYS_CDName(int drive); | |
| 44 static int SDL_SYS_CDOpen(int drive); | |
| 45 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 46 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 47 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 48 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 49 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 50 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 51 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 52 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 53 | |
| 54 /* MCI Timing Functions */ | |
| 55 #define MCI_MMTIMEPERSECOND 3000 | |
| 56 #define FRAMESFROMMM(mmtime) (((mmtime)*CD_FPS)/MCI_MMTIMEPERSECOND) | |
| 57 | |
| 58 | |
| 59 /* Ready for MCI CDAudio Devices */ | |
| 60 int SDL_SYS_CDInit(void) | |
| 61 { | |
| 62 int i; /* generig counter */ | |
| 63 MCI_SYSINFO_PARMS msp; /* Structure to MCI SysInfo parameters */ | |
| 64 CHAR SysInfoRet[MCI_CMDRETBUFSIZE]; /* Buffer for MCI Command result */ | |
| 65 | |
| 66 /* Fill in our driver capabilities */ | |
| 67 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 68 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 69 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 70 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 71 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 72 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 73 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 74 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 75 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 76 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 77 | |
| 78 /* Get the number of CD ROMs in the System */ | |
| 79 /* Clean SysInfo structure */ | |
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80 SDL_memset(&msp, 0x00, sizeof(MCI_SYSINFO_PARMS)); |
| 1190 | 81 /* Prepare structure to Ask Numer of Audio CDs */ |
| 82 msp.usDeviceType = MCI_DEVTYPE_CD_AUDIO; /* CD Audio Type */ | |
| 83 msp.pszReturn = (PSZ)&SysInfoRet; /* Return Structure */ | |
| 84 msp.ulRetSize = MCI_CMDRETBUFSIZE; /* Size of ret struct */ | |
| 85 if (LOUSHORT(mciSendCommand(0,MCI_SYSINFO, MCI_SYSINFO_QUANTITY | MCI_WAIT, (PVOID)&msp, 0)) != MCIERR_SUCCESS) return(CD_ERROR); | |
| 86 SDL_numcds = atoi(SysInfoRet); | |
| 87 if (SDL_numcds > MAX_DRIVES) SDL_numcds = MAX_DRIVES; /* Limit maximum CD number */ | |
| 88 | |
| 89 /* Get and Add their system name to the SDL_cdlist */ | |
| 90 msp.pszReturn = (PSZ)&SysInfoRet; /* Return Structure */ | |
| 91 msp.ulRetSize = MCI_CMDRETBUFSIZE; /* Size of ret struct */ | |
| 92 msp.usDeviceType = MCI_DEVTYPE_CD_AUDIO; /* CD Audio Type */ | |
| 93 for (i=0; i<SDL_numcds; i++) | |
| 94 { | |
| 95 msp.ulNumber = i+1; | |
| 96 mciSendCommand(0,MCI_SYSINFO, MCI_SYSINFO_NAME | MCI_WAIT,&msp, 0); | |
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97 SDL_cdlist[i] = SDL_strdup(SysInfoRet); |
| 1190 | 98 if ( SDL_cdlist[i] == NULL ) |
| 99 { | |
| 100 SDL_OutOfMemory(); | |
| 101 return(-1); | |
| 102 } | |
| 103 } | |
| 104 return(0); | |
| 105 } | |
| 106 | |
| 107 /* Return CDAudio System Dependent Device Name - Ready for MCI*/ | |
| 108 static const char *SDL_SYS_CDName(int drive) | |
| 109 { | |
| 110 return(SDL_cdlist[drive]); | |
| 111 } | |
| 112 | |
| 113 /* Open CDAudio Device - Ready for MCI */ | |
| 114 static int SDL_SYS_CDOpen(int drive) | |
| 115 { | |
| 116 MCI_OPEN_PARMS mop; | |
| 117 MCI_SET_PARMS msp; | |
| 118 MCI_GENERIC_PARMS mgp; | |
| 119 | |
| 120 /* Open the device */ | |
| 121 mop.hwndCallback = (HWND)NULL; // None | |
| 122 mop.usDeviceID = (USHORT)NULL; // Will be returned. | |
| 123 mop.pszDeviceType = (PSZ)SDL_cdlist[drive]; // CDAudio Device | |
| 124 if (LOUSHORT(mciSendCommand(0,MCI_OPEN,MCI_WAIT,&mop, 0)) != MCIERR_SUCCESS) return(CD_ERROR); | |
| 125 /* Set time format */ | |
| 126 msp.hwndCallback = (HWND)NULL; // None | |
| 127 msp.ulTimeFormat = MCI_FORMAT_MSF; // Minute : Second : Frame structure | |
| 128 msp.ulSpeedFormat = (ULONG)NULL; // No change | |
| 129 msp.ulAudio = (ULONG)NULL; // No Channel | |
| 130 msp.ulLevel = (ULONG)NULL; // No Volume | |
| 131 msp.ulOver = (ULONG)NULL; // No Delay | |
| 132 msp.ulItem = (ULONG)NULL; // No item | |
| 133 msp.ulValue = (ULONG)NULL; // No value for item flag | |
| 134 if (LOUSHORT(mciSendCommand(mop.usDeviceID,MCI_SET,MCI_WAIT | MCI_SET_TIME_FORMAT,&msp, 0)) == MCIERR_SUCCESS) return (mop.usDeviceID); | |
| 135 /* Error setting time format? - Close opened device */ | |
| 136 mgp.hwndCallback = (HWND)NULL; // None | |
| 137 mciSendCommand(mop.usDeviceID,MCI_CLOSE,MCI_WAIT,&mgp, 0); | |
| 138 return(CD_ERROR); | |
| 139 } | |
| 140 | |
| 141 /* Get CD Table Of Contents - Ready for MCI */ | |
| 142 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
| 143 { | |
| 144 MCI_TOC_PARMS mtp; | |
| 145 MCI_STATUS_PARMS msp; | |
| 146 MCI_TOC_REC * mtr; | |
| 147 INT i; | |
| 148 | |
| 149 /* Correction because MCI cannot read TOC while CD is playing (it'll stop!) */ | |
| 150 if (cdrom->status == CD_PLAYING || cdrom->status == CD_PAUSED) return 0; | |
| 151 | |
| 152 /* Get Number of Tracks */ | |
| 153 msp.hwndCallback = (HWND)NULL; /* None */ | |
| 154 msp.ulReturn = (ULONG)NULL; /* We want this information */ | |
| 155 msp.ulItem = MCI_STATUS_NUMBER_OF_TRACKS; | |
| 156 msp.ulValue = (ULONG)NULL; /* No additional information */ | |
| 157 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) return(CD_ERROR); | |
| 158 cdrom->numtracks = msp.ulReturn; | |
| 159 if ( cdrom->numtracks > SDL_MAX_TRACKS ) | |
| 160 { | |
| 161 cdrom->numtracks = SDL_MAX_TRACKS; | |
| 162 } | |
| 163 /* Alocate space for TOC data */ | |
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164 mtr = (MCI_TOC_REC *)SDL_malloc(cdrom->numtracks*sizeof(MCI_TOC_REC)); |
| 1190 | 165 if ( mtr == NULL ) |
| 166 { | |
| 167 SDL_OutOfMemory(); | |
| 168 return(-1); | |
| 169 } | |
| 170 /* Get TOC from CD */ | |
| 171 mtp.pBuf = mtr; | |
| 172 mtp.ulBufSize = cdrom->numtracks*sizeof(MCI_TOC_REC); | |
| 173 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_GETTOC,MCI_WAIT,&mtp, 0)) != MCIERR_SUCCESS) | |
| 174 { | |
| 175 SDL_OutOfMemory(); | |
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176 SDL_free(mtr); |
| 1190 | 177 return(CD_ERROR); |
| 178 } | |
| 179 /* Fill SDL Tracks Structure */ | |
| 180 for (i=0; i<cdrom->numtracks; i++) | |
| 181 { | |
| 182 /* Set Track ID */ | |
| 183 cdrom->track[i].id = (mtr+i)->TrackNum; | |
| 184 /* Set Track Type */ | |
| 185 msp.hwndCallback = (HWND)NULL; /* None */ | |
| 186 msp.ulReturn = (ULONG)NULL; /* We want this information */ | |
| 187 msp.ulItem = MCI_CD_STATUS_TRACK_TYPE; | |
| 188 msp.ulValue = (ULONG)((mtr+i)->TrackNum); /* Track Number? */ | |
| 189 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_TRACK | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) | |
| 190 { | |
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191 SDL_free(mtr); |
| 1190 | 192 return (CD_ERROR); |
| 193 } | |
| 194 if (msp.ulReturn==MCI_CD_TRACK_AUDIO) cdrom->track[i].type = SDL_AUDIO_TRACK; | |
| 195 else cdrom->track[i].type = SDL_DATA_TRACK; | |
| 196 /* Set Track Length - values from MCI are in MMTIMEs - 3000 MMTIME = 1 second */ | |
| 197 cdrom->track[i].length = FRAMESFROMMM((mtr+i)->ulEndAddr - (mtr+i)->ulStartAddr); | |
| 198 /* Set Track Offset */ | |
| 199 cdrom->track[i].offset = FRAMESFROMMM((mtr+i)->ulStartAddr); | |
| 200 } | |
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201 SDL_free(mtr); |
| 1190 | 202 return(0); |
| 203 } | |
| 204 | |
| 205 | |
| 206 /* Get CD-ROM status - Ready for MCI */ | |
| 207 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 208 { | |
| 209 CDstatus status; | |
| 210 MCI_STATUS_PARMS msp; | |
| 211 | |
| 212 /* Get Status from MCI */ | |
| 213 msp.hwndCallback = (HWND)NULL; /* None */ | |
| 214 msp.ulReturn = (ULONG)NULL; /* We want this information */ | |
| 215 msp.ulItem = MCI_STATUS_MODE; | |
| 216 msp.ulValue = (ULONG)NULL; /* No additional information */ | |
| 217 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) status = CD_ERROR; | |
| 218 else | |
| 219 { | |
| 220 switch(msp.ulReturn) | |
| 221 { | |
| 222 case MCI_MODE_NOT_READY: | |
| 223 status = CD_TRAYEMPTY; | |
| 224 break; | |
| 225 case MCI_MODE_PAUSE: | |
| 226 status = CD_PAUSED; | |
| 227 break; | |
| 228 case MCI_MODE_PLAY: | |
| 229 status = CD_PLAYING; | |
| 230 break; | |
| 231 case MCI_MODE_STOP: | |
| 232 status = CD_STOPPED; | |
| 233 break; | |
| 234 /* These cases should not occour */ | |
| 235 case MCI_MODE_RECORD: | |
| 236 case MCI_MODE_SEEK: | |
| 237 default: | |
| 238 status = CD_ERROR; | |
| 239 break; | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 /* Determine position */ | |
| 244 if (position != NULL) /* The SDL $&$&%# CDROM call sends NULL pointer here! */ | |
| 245 { | |
| 246 if ((status == CD_PLAYING) || (status == CD_PAUSED)) | |
| 247 { | |
| 248 /* Get Position */ | |
| 249 msp.hwndCallback = (HWND)NULL; /* None */ | |
| 250 msp.ulReturn = (ULONG)NULL; /* We want this information */ | |
| 251 msp.ulItem = MCI_STATUS_POSITION; | |
| 252 msp.ulValue = (ULONG)NULL; /* No additiona info */ | |
| 253 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) != MCIERR_SUCCESS) return (CD_ERROR); | |
| 254 /* Convert from MSF (format selected in the Open process) to Frames (format that will be returned) */ | |
| 255 *position = MSF_TO_FRAMES(MSF_MINUTE(msp.ulReturn),MSF_SECOND(msp.ulReturn),MSF_FRAME(msp.ulReturn)); | |
| 256 } | |
| 257 else *position = 0; | |
| 258 } | |
| 259 return(status); | |
| 260 } | |
| 261 | |
| 262 /* Start play - Ready for MCI */ | |
| 263 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 264 { | |
| 265 MCI_GENERIC_PARMS mgp; | |
| 266 MCI_STATUS_PARMS msp; | |
| 267 MCI_PLAY_PARMS mpp; | |
| 268 ULONG min,sec,frm; | |
| 269 | |
| 270 /* Start MSF */ | |
| 271 FRAMES_TO_MSF(start, &min, &sec, &frm); | |
| 272 MSF_MINUTE(mpp.ulFrom) = min; | |
| 273 MSF_SECOND(mpp.ulFrom) = sec; | |
| 274 MSF_FRAME(mpp.ulFrom) = frm; | |
| 275 /* End MSF */ | |
| 276 FRAMES_TO_MSF(start+length, &min, &sec, &frm); | |
| 277 MSF_MINUTE(mpp.ulTo) = min; | |
| 278 MSF_SECOND(mpp.ulTo) = sec; | |
| 279 MSF_FRAME(mpp.ulTo) = frm; | |
| 280 #ifdef DEBUG_CDROM | |
| 281 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", | |
| 282 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, | |
| 283 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); | |
| 284 #endif | |
| 285 /* Verifies if it is paused first... and if it is, unpause before stopping it. */ | |
| 286 msp.hwndCallback = (HWND)NULL; /* None */ | |
| 287 msp.ulReturn = (ULONG)NULL; /* We want this information */ | |
| 288 msp.ulItem = MCI_STATUS_MODE; | |
| 289 msp.ulValue = (ULONG)NULL; /* No additional information */ | |
| 290 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) == MCIERR_SUCCESS) | |
| 291 { | |
| 292 if (msp.ulReturn == MCI_MODE_PAUSE) | |
| 293 { | |
| 294 mgp.hwndCallback = (HWND)NULL; // None | |
| 295 mciSendCommand(cdrom->id,MCI_RESUME,NULL,&mgp, 0); | |
| 296 } | |
| 297 } | |
| 298 /* Now play it. */ | |
| 299 mpp.hwndCallback = (HWND)NULL; // We do not want the info. temp | |
| 300 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_PLAY,MCI_FROM | MCI_TO,&mpp, 0)) == MCIERR_SUCCESS) return 0; | |
| 301 return (CD_ERROR); | |
| 302 } | |
| 303 | |
| 304 /* Pause play - Ready for MCI */ | |
| 305 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 306 { | |
| 307 MCI_GENERIC_PARMS mgp; | |
| 308 | |
| 309 mgp.hwndCallback = (HWND)NULL; // None | |
| 310 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_PAUSE,MCI_WAIT,&mgp, 0)) == MCIERR_SUCCESS) return 0; | |
| 311 return(CD_ERROR); | |
| 312 } | |
| 313 | |
| 314 /* Resume play - Ready for MCI */ | |
| 315 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 316 { | |
| 317 MCI_GENERIC_PARMS mgp; | |
| 318 | |
| 319 mgp.hwndCallback = (HWND)NULL; // None | |
| 320 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_RESUME,MCI_WAIT,&mgp, 0)) == MCIERR_SUCCESS) return 0; | |
| 321 return(CD_ERROR); | |
| 322 } | |
| 323 | |
| 324 /* Stop play - Ready for MCI */ | |
| 325 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 326 { | |
| 327 MCI_GENERIC_PARMS mgp; | |
| 328 MCI_STATUS_PARMS msp; | |
| 329 | |
| 330 /* Verifies if it is paused first... and if it is, unpause before stopping it. */ | |
| 331 msp.hwndCallback = (HWND)NULL; /* None */ | |
| 332 msp.ulReturn = (ULONG)NULL; /* We want this information */ | |
| 333 msp.ulItem = MCI_STATUS_MODE; | |
| 334 msp.ulValue = (ULONG)NULL; /* No additional information */ | |
| 335 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STATUS,MCI_WAIT | MCI_STATUS_ITEM,&msp, 0)) == MCIERR_SUCCESS) | |
| 336 { | |
| 337 if (msp.ulReturn == MCI_MODE_PAUSE) | |
| 338 { | |
| 339 mgp.hwndCallback = (HWND)NULL; // None | |
| 340 mciSendCommand(cdrom->id,MCI_RESUME,NULL,&mgp, 0); | |
| 341 } | |
| 342 } | |
| 343 /* Now stops the media */ | |
| 344 mgp.hwndCallback = (HWND)NULL; // None | |
| 345 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_STOP,MCI_WAIT,&mgp, 0)) == MCIERR_SUCCESS) return 0; | |
| 346 return(CD_ERROR); | |
| 347 } | |
| 348 | |
| 349 /* Eject the CD-ROM - Ready for MCI */ | |
| 350 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 351 { | |
| 352 MCI_SET_PARMS msp; | |
| 353 | |
| 354 msp.hwndCallback = (HWND)NULL; // None | |
| 355 msp.ulTimeFormat = (ULONG)NULL; // No change | |
| 356 msp.ulSpeedFormat = (ULONG)NULL; // No change | |
| 357 msp.ulAudio = (ULONG)NULL; // No Channel | |
| 358 msp.ulLevel = (ULONG)NULL; // No Volume | |
| 359 msp.ulOver = (ULONG)NULL; // No Delay | |
| 360 msp.ulItem = (ULONG)NULL; // No item | |
| 361 msp.ulValue = (ULONG)NULL; // No value for item flag | |
| 362 if (LOUSHORT(mciSendCommand(cdrom->id,MCI_SET,MCI_WAIT | MCI_SET_DOOR_OPEN,&msp, 0)) == MCIERR_SUCCESS) return 0; | |
| 363 return(CD_ERROR); | |
| 364 } | |
| 365 | |
| 366 /* Close the CD-ROM handle - Ready for MCI */ | |
| 367 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 368 { | |
| 369 MCI_GENERIC_PARMS mgp; | |
| 370 | |
| 371 mgp.hwndCallback = (HWND)NULL; // None | |
| 372 mciSendCommand(cdrom->id,MCI_CLOSE,MCI_WAIT,&mgp, 0); | |
| 373 } | |
| 374 | |
| 375 /* Finalize CDROM Subsystem - Ready for MCI */ | |
| 376 void SDL_SYS_CDQuit(void) | |
| 377 { | |
| 378 int i; | |
| 379 | |
| 380 if ( SDL_numcds > 0 ) | |
| 381 { | |
| 382 for ( i=0; i<SDL_numcds; ++i ) | |
| 383 { | |
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384 SDL_free(SDL_cdlist[i]); |
| 1190 | 385 } |
| 386 SDL_numcds = 0; | |
| 387 } | |
| 388 } | |
| 389 |