diff options
Diffstat (limited to 'apps/plugins/sdl/src/cdrom/linux')
-rw-r--r-- | apps/plugins/sdl/src/cdrom/linux/SDL_syscdrom.c | 564 |
1 files changed, 564 insertions, 0 deletions
diff --git a/apps/plugins/sdl/src/cdrom/linux/SDL_syscdrom.c b/apps/plugins/sdl/src/cdrom/linux/SDL_syscdrom.c new file mode 100644 index 0000000000..68040575b5 --- /dev/null +++ b/apps/plugins/sdl/src/cdrom/linux/SDL_syscdrom.c | |||
@@ -0,0 +1,564 @@ | |||
1 | /* | ||
2 | SDL - Simple DirectMedia Layer | ||
3 | Copyright (C) 1997-2012 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_LINUX | ||
25 | |||
26 | /* Functions for system-level CD-ROM audio control */ | ||
27 | |||
28 | #include <string.h> /* For strerror() */ | ||
29 | #include <sys/types.h> | ||
30 | #include <sys/stat.h> | ||
31 | #include <sys/ioctl.h> | ||
32 | #include <fcntl.h> | ||
33 | #include <errno.h> | ||
34 | #include <unistd.h> | ||
35 | #ifdef __LINUX__ | ||
36 | #ifdef HAVE_LINUX_VERSION_H | ||
37 | /* linux 2.6.9 workaround */ | ||
38 | #include <linux/version.h> | ||
39 | #if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,9) | ||
40 | #include <asm/types.h> | ||
41 | #define __le64 __u64 | ||
42 | #define __le32 __u32 | ||
43 | #define __le16 __u16 | ||
44 | #define __be64 __u64 | ||
45 | #define __be32 __u32 | ||
46 | #define __be16 __u16 | ||
47 | #endif /* linux 2.6.9 workaround */ | ||
48 | #endif /* HAVE_LINUX_VERSION_H */ | ||
49 | #include <linux/cdrom.h> | ||
50 | #endif | ||
51 | #ifdef __SVR4 | ||
52 | #include <sys/cdio.h> | ||
53 | #endif | ||
54 | |||
55 | /* Define this to use the alternative getmntent() code */ | ||
56 | #ifndef __SVR4 | ||
57 | #define USE_MNTENT | ||
58 | #endif | ||
59 | |||
60 | #ifdef USE_MNTENT | ||
61 | #if defined(__USLC__) | ||
62 | #include <sys/mntent.h> | ||
63 | #else | ||
64 | #include <mntent.h> | ||
65 | #endif | ||
66 | |||
67 | #ifndef _PATH_MNTTAB | ||
68 | #ifdef MNTTAB | ||
69 | #define _PATH_MNTTAB MNTTAB | ||
70 | #else | ||
71 | #define _PATH_MNTTAB "/etc/fstab" | ||
72 | #endif | ||
73 | #endif /* !_PATH_MNTTAB */ | ||
74 | |||
75 | #ifndef _PATH_MOUNTED | ||
76 | #define _PATH_MOUNTED "/etc/mtab" | ||
77 | #endif /* !_PATH_MOUNTED */ | ||
78 | |||
79 | #ifndef MNTTYPE_CDROM | ||
80 | #define MNTTYPE_CDROM "iso9660" | ||
81 | #endif | ||
82 | #ifndef MNTTYPE_SUPER | ||
83 | #define MNTTYPE_SUPER "supermount" | ||
84 | #endif | ||
85 | #endif /* USE_MNTENT */ | ||
86 | |||
87 | #include "SDL_cdrom.h" | ||
88 | #include "../SDL_syscdrom.h" | ||
89 | |||
90 | |||
91 | /* The maximum number of CD-ROM drives we'll detect */ | ||
92 | #define MAX_DRIVES 16 | ||
93 | |||
94 | /* A list of available CD-ROM drives */ | ||
95 | static char *SDL_cdlist[MAX_DRIVES]; | ||
96 | static dev_t SDL_cdmode[MAX_DRIVES]; | ||
97 | |||
98 | /* The system-dependent CD control functions */ | ||
99 | static const char *SDL_SYS_CDName(int drive); | ||
100 | static int SDL_SYS_CDOpen(int drive); | ||
101 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | ||
102 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | ||
103 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | ||
104 | static int SDL_SYS_CDPause(SDL_CD *cdrom); | ||
105 | static int SDL_SYS_CDResume(SDL_CD *cdrom); | ||
106 | static int SDL_SYS_CDStop(SDL_CD *cdrom); | ||
107 | static int SDL_SYS_CDEject(SDL_CD *cdrom); | ||
108 | static void SDL_SYS_CDClose(SDL_CD *cdrom); | ||
109 | |||
110 | /* Some ioctl() errno values which occur when the tray is empty */ | ||
111 | #ifndef ENOMEDIUM | ||
112 | #define ENOMEDIUM ENOENT | ||
113 | #endif | ||
114 | #define ERRNO_TRAYEMPTY(errno) \ | ||
115 | ((errno == EIO) || (errno == ENOENT) || \ | ||
116 | (errno == EINVAL) || (errno == ENOMEDIUM)) | ||
117 | |||
118 | /* Check a drive to see if it is a CD-ROM */ | ||
119 | static int CheckDrive(char *drive, char *mnttype, struct stat *stbuf) | ||
120 | { | ||
121 | int is_cd, cdfd; | ||
122 | struct cdrom_subchnl info; | ||
123 | |||
124 | /* If it doesn't exist, return -1 */ | ||
125 | if ( stat(drive, stbuf) < 0 ) { | ||
126 | return(-1); | ||
127 | } | ||
128 | |||
129 | /* If it does exist, verify that it's an available CD-ROM */ | ||
130 | is_cd = 0; | ||
131 | if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) { | ||
132 | cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0); | ||
133 | if ( cdfd >= 0 ) { | ||
134 | info.cdsc_format = CDROM_MSF; | ||
135 | /* Under Linux, EIO occurs when a disk is not present. | ||
136 | */ | ||
137 | if ( (ioctl(cdfd, CDROMSUBCHNL, &info) == 0) || | ||
138 | ERRNO_TRAYEMPTY(errno) ) { | ||
139 | is_cd = 1; | ||
140 | } | ||
141 | close(cdfd); | ||
142 | } | ||
143 | #ifdef USE_MNTENT | ||
144 | /* Even if we can't read it, it might be mounted */ | ||
145 | else if ( mnttype && (SDL_strcmp(mnttype, MNTTYPE_CDROM) == 0) ) { | ||
146 | is_cd = 1; | ||
147 | } | ||
148 | #endif | ||
149 | } | ||
150 | return(is_cd); | ||
151 | } | ||
152 | |||
153 | /* Add a CD-ROM drive to our list of valid drives */ | ||
154 | static void AddDrive(char *drive, struct stat *stbuf) | ||
155 | { | ||
156 | int i; | ||
157 | |||
158 | if ( SDL_numcds < MAX_DRIVES ) { | ||
159 | /* Check to make sure it's not already in our list. | ||
160 | This can happen when we see a drive via symbolic link. | ||
161 | */ | ||
162 | for ( i=0; i<SDL_numcds; ++i ) { | ||
163 | if ( stbuf->st_rdev == SDL_cdmode[i] ) { | ||
164 | #ifdef DEBUG_CDROM | ||
165 | fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); | ||
166 | #endif | ||
167 | return; | ||
168 | } | ||
169 | } | ||
170 | |||
171 | /* Add this drive to our list */ | ||
172 | i = SDL_numcds; | ||
173 | SDL_cdlist[i] = SDL_strdup(drive); | ||
174 | if ( SDL_cdlist[i] == NULL ) { | ||
175 | SDL_OutOfMemory(); | ||
176 | return; | ||
177 | } | ||
178 | SDL_cdmode[i] = stbuf->st_rdev; | ||
179 | ++SDL_numcds; | ||
180 | #ifdef DEBUG_CDROM | ||
181 | fprintf(stderr, "Added CD-ROM drive: %s\n", drive); | ||
182 | #endif | ||
183 | } | ||
184 | } | ||
185 | |||
186 | #ifdef USE_MNTENT | ||
187 | static void CheckMounts(const char *mtab) | ||
188 | { | ||
189 | FILE *mntfp; | ||
190 | struct mntent *mntent; | ||
191 | struct stat stbuf; | ||
192 | |||
193 | mntfp = setmntent(mtab, "r"); | ||
194 | if ( mntfp != NULL ) { | ||
195 | char *tmp; | ||
196 | char *mnt_type; | ||
197 | size_t mnt_type_len; | ||
198 | char *mnt_dev; | ||
199 | size_t mnt_dev_len; | ||
200 | |||
201 | while ( (mntent=getmntent(mntfp)) != NULL ) { | ||
202 | mnt_type_len = SDL_strlen(mntent->mnt_type) + 1; | ||
203 | mnt_type = SDL_stack_alloc(char, mnt_type_len); | ||
204 | if (mnt_type == NULL) | ||
205 | continue; /* maybe you'll get lucky next time. */ | ||
206 | |||
207 | mnt_dev_len = SDL_strlen(mntent->mnt_fsname) + 1; | ||
208 | mnt_dev = SDL_stack_alloc(char, mnt_dev_len); | ||
209 | if (mnt_dev == NULL) { | ||
210 | SDL_stack_free(mnt_type); | ||
211 | continue; | ||
212 | } | ||
213 | |||
214 | SDL_strlcpy(mnt_type, mntent->mnt_type, mnt_type_len); | ||
215 | SDL_strlcpy(mnt_dev, mntent->mnt_fsname, mnt_dev_len); | ||
216 | |||
217 | /* Handle "supermount" filesystem mounts */ | ||
218 | if ( SDL_strcmp(mnt_type, MNTTYPE_SUPER) == 0 ) { | ||
219 | tmp = SDL_strstr(mntent->mnt_opts, "fs="); | ||
220 | if ( tmp ) { | ||
221 | SDL_stack_free(mnt_type); | ||
222 | mnt_type = SDL_strdup(tmp + SDL_strlen("fs=")); | ||
223 | if ( mnt_type ) { | ||
224 | tmp = SDL_strchr(mnt_type, ','); | ||
225 | if ( tmp ) { | ||
226 | *tmp = '\0'; | ||
227 | } | ||
228 | } | ||
229 | } | ||
230 | tmp = SDL_strstr(mntent->mnt_opts, "dev="); | ||
231 | if ( tmp ) { | ||
232 | SDL_stack_free(mnt_dev); | ||
233 | mnt_dev = SDL_strdup(tmp + SDL_strlen("dev=")); | ||
234 | if ( mnt_dev ) { | ||
235 | tmp = SDL_strchr(mnt_dev, ','); | ||
236 | if ( tmp ) { | ||
237 | *tmp = '\0'; | ||
238 | } | ||
239 | } | ||
240 | } | ||
241 | } | ||
242 | if ( SDL_strcmp(mnt_type, MNTTYPE_CDROM) == 0 ) { | ||
243 | #ifdef DEBUG_CDROM | ||
244 | fprintf(stderr, "Checking mount path from %s: %s mounted on %s of %s\n", | ||
245 | mtab, mnt_dev, mntent->mnt_dir, mnt_type); | ||
246 | #endif | ||
247 | if (CheckDrive(mnt_dev, mnt_type, &stbuf) > 0) { | ||
248 | AddDrive(mnt_dev, &stbuf); | ||
249 | } | ||
250 | } | ||
251 | SDL_stack_free(mnt_dev); | ||
252 | SDL_stack_free(mnt_type); | ||
253 | } | ||
254 | endmntent(mntfp); | ||
255 | } | ||
256 | } | ||
257 | #endif /* USE_MNTENT */ | ||
258 | |||
259 | int SDL_SYS_CDInit(void) | ||
260 | { | ||
261 | /* checklist: /dev/cdrom, /dev/hd?, /dev/scd? /dev/sr? */ | ||
262 | static char *checklist[] = { | ||
263 | "cdrom", "?a hd?", "?0 scd?", "?0 sr?", NULL | ||
264 | }; | ||
265 | char *SDLcdrom; | ||
266 | int i, j, exists; | ||
267 | char drive[32]; | ||
268 | struct stat stbuf; | ||
269 | |||
270 | /* Fill in our driver capabilities */ | ||
271 | SDL_CDcaps.Name = SDL_SYS_CDName; | ||
272 | SDL_CDcaps.Open = SDL_SYS_CDOpen; | ||
273 | SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | ||
274 | SDL_CDcaps.Status = SDL_SYS_CDStatus; | ||
275 | SDL_CDcaps.Play = SDL_SYS_CDPlay; | ||
276 | SDL_CDcaps.Pause = SDL_SYS_CDPause; | ||
277 | SDL_CDcaps.Resume = SDL_SYS_CDResume; | ||
278 | SDL_CDcaps.Stop = SDL_SYS_CDStop; | ||
279 | SDL_CDcaps.Eject = SDL_SYS_CDEject; | ||
280 | SDL_CDcaps.Close = SDL_SYS_CDClose; | ||
281 | |||
282 | /* Look in the environment for our CD-ROM drive list */ | ||
283 | SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ | ||
284 | if ( SDLcdrom != NULL ) { | ||
285 | char *cdpath, *delim; | ||
286 | size_t len = SDL_strlen(SDLcdrom)+1; | ||
287 | cdpath = SDL_stack_alloc(char, len); | ||
288 | if ( cdpath != NULL ) { | ||
289 | SDL_strlcpy(cdpath, SDLcdrom, len); | ||
290 | SDLcdrom = cdpath; | ||
291 | do { | ||
292 | delim = SDL_strchr(SDLcdrom, ':'); | ||
293 | if ( delim ) { | ||
294 | *delim++ = '\0'; | ||
295 | } | ||
296 | #ifdef DEBUG_CDROM | ||
297 | fprintf(stderr, "Checking CD-ROM drive from SDL_CDROM: %s\n", SDLcdrom); | ||
298 | #endif | ||
299 | if ( CheckDrive(SDLcdrom, NULL, &stbuf) > 0 ) { | ||
300 | AddDrive(SDLcdrom, &stbuf); | ||
301 | } | ||
302 | if ( delim ) { | ||
303 | SDLcdrom = delim; | ||
304 | } else { | ||
305 | SDLcdrom = NULL; | ||
306 | } | ||
307 | } while ( SDLcdrom ); | ||
308 | SDL_stack_free(cdpath); | ||
309 | } | ||
310 | |||
311 | /* If we found our drives, there's nothing left to do */ | ||
312 | if ( SDL_numcds > 0 ) { | ||
313 | return(0); | ||
314 | } | ||
315 | } | ||
316 | |||
317 | #ifdef USE_MNTENT | ||
318 | /* Check /dev/cdrom first :-) */ | ||
319 | if (CheckDrive("/dev/cdrom", NULL, &stbuf) > 0) { | ||
320 | AddDrive("/dev/cdrom", &stbuf); | ||
321 | } | ||
322 | |||
323 | /* Now check the currently mounted CD drives */ | ||
324 | CheckMounts(_PATH_MOUNTED); | ||
325 | |||
326 | /* Finally check possible mountable drives in /etc/fstab */ | ||
327 | CheckMounts(_PATH_MNTTAB); | ||
328 | |||
329 | /* If we found our drives, there's nothing left to do */ | ||
330 | if ( SDL_numcds > 0 ) { | ||
331 | return(0); | ||
332 | } | ||
333 | #endif /* USE_MNTENT */ | ||
334 | |||
335 | /* Scan the system for CD-ROM drives. | ||
336 | Not always 100% reliable, so use the USE_MNTENT code above first. | ||
337 | */ | ||
338 | for ( i=0; checklist[i]; ++i ) { | ||
339 | if ( checklist[i][0] == '?' ) { | ||
340 | char *insert; | ||
341 | exists = 1; | ||
342 | for ( j=checklist[i][1]; exists; ++j ) { | ||
343 | SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", &checklist[i][3]); | ||
344 | insert = SDL_strchr(drive, '?'); | ||
345 | if ( insert != NULL ) { | ||
346 | *insert = j; | ||
347 | } | ||
348 | #ifdef DEBUG_CDROM | ||
349 | fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); | ||
350 | #endif | ||
351 | switch (CheckDrive(drive, NULL, &stbuf)) { | ||
352 | /* Drive exists and is a CD-ROM */ | ||
353 | case 1: | ||
354 | AddDrive(drive, &stbuf); | ||
355 | break; | ||
356 | /* Drive exists, but isn't a CD-ROM */ | ||
357 | case 0: | ||
358 | break; | ||
359 | /* Drive doesn't exist */ | ||
360 | case -1: | ||
361 | exists = 0; | ||
362 | break; | ||
363 | } | ||
364 | } | ||
365 | } else { | ||
366 | SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]); | ||
367 | #ifdef DEBUG_CDROM | ||
368 | fprintf(stderr, "Checking possible CD-ROM drive: %s\n", drive); | ||
369 | #endif | ||
370 | if ( CheckDrive(drive, NULL, &stbuf) > 0 ) { | ||
371 | AddDrive(drive, &stbuf); | ||
372 | } | ||
373 | } | ||
374 | } | ||
375 | return(0); | ||
376 | } | ||
377 | |||
378 | /* General ioctl() CD-ROM command function */ | ||
379 | static int SDL_SYS_CDioctl(int id, int command, void *arg) | ||
380 | { | ||
381 | int retval; | ||
382 | |||
383 | retval = ioctl(id, command, arg); | ||
384 | if ( retval < 0 ) { | ||
385 | SDL_SetError("ioctl() error: %s", strerror(errno)); | ||
386 | } | ||
387 | return(retval); | ||
388 | } | ||
389 | |||
390 | static const char *SDL_SYS_CDName(int drive) | ||
391 | { | ||
392 | return(SDL_cdlist[drive]); | ||
393 | } | ||
394 | |||
395 | static int SDL_SYS_CDOpen(int drive) | ||
396 | { | ||
397 | return(open(SDL_cdlist[drive], (O_RDONLY|O_NONBLOCK), 0)); | ||
398 | } | ||
399 | |||
400 | static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | ||
401 | { | ||
402 | struct cdrom_tochdr toc; | ||
403 | int i, okay; | ||
404 | struct cdrom_tocentry entry; | ||
405 | |||
406 | okay = 0; | ||
407 | if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc) == 0 ) { | ||
408 | cdrom->numtracks = toc.cdth_trk1-toc.cdth_trk0+1; | ||
409 | if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | ||
410 | cdrom->numtracks = SDL_MAX_TRACKS; | ||
411 | } | ||
412 | /* Read all the track TOC entries */ | ||
413 | for ( i=0; i<=cdrom->numtracks; ++i ) { | ||
414 | if ( i == cdrom->numtracks ) { | ||
415 | cdrom->track[i].id = CDROM_LEADOUT; | ||
416 | } else { | ||
417 | cdrom->track[i].id = toc.cdth_trk0+i; | ||
418 | } | ||
419 | entry.cdte_track = cdrom->track[i].id; | ||
420 | entry.cdte_format = CDROM_MSF; | ||
421 | if ( SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCENTRY, | ||
422 | &entry) < 0 ) { | ||
423 | break; | ||
424 | } else { | ||
425 | if ( entry.cdte_ctrl & CDROM_DATA_TRACK ) { | ||
426 | cdrom->track[i].type = SDL_DATA_TRACK; | ||
427 | } else { | ||
428 | cdrom->track[i].type = SDL_AUDIO_TRACK; | ||
429 | } | ||
430 | cdrom->track[i].offset = MSF_TO_FRAMES( | ||
431 | entry.cdte_addr.msf.minute, | ||
432 | entry.cdte_addr.msf.second, | ||
433 | entry.cdte_addr.msf.frame); | ||
434 | cdrom->track[i].length = 0; | ||
435 | if ( i > 0 ) { | ||
436 | cdrom->track[i-1].length = | ||
437 | cdrom->track[i].offset- | ||
438 | cdrom->track[i-1].offset; | ||
439 | } | ||
440 | } | ||
441 | } | ||
442 | if ( i == (cdrom->numtracks+1) ) { | ||
443 | okay = 1; | ||
444 | } | ||
445 | } | ||
446 | return(okay ? 0 : -1); | ||
447 | } | ||
448 | |||
449 | /* Get CD-ROM status */ | ||
450 | static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | ||
451 | { | ||
452 | CDstatus status; | ||
453 | struct cdrom_tochdr toc; | ||
454 | struct cdrom_subchnl info; | ||
455 | |||
456 | info.cdsc_format = CDROM_MSF; | ||
457 | if ( ioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) { | ||
458 | if ( ERRNO_TRAYEMPTY(errno) ) { | ||
459 | status = CD_TRAYEMPTY; | ||
460 | } else { | ||
461 | status = CD_ERROR; | ||
462 | } | ||
463 | } else { | ||
464 | switch (info.cdsc_audiostatus) { | ||
465 | case CDROM_AUDIO_INVALID: | ||
466 | case CDROM_AUDIO_NO_STATUS: | ||
467 | /* Try to determine if there's a CD available */ | ||
468 | if (ioctl(cdrom->id, CDROMREADTOCHDR, &toc)==0) | ||
469 | status = CD_STOPPED; | ||
470 | else | ||
471 | status = CD_TRAYEMPTY; | ||
472 | break; | ||
473 | case CDROM_AUDIO_COMPLETED: | ||
474 | status = CD_STOPPED; | ||
475 | break; | ||
476 | case CDROM_AUDIO_PLAY: | ||
477 | status = CD_PLAYING; | ||
478 | break; | ||
479 | case CDROM_AUDIO_PAUSED: | ||
480 | /* Workaround buggy CD-ROM drive */ | ||
481 | if ( info.cdsc_trk == CDROM_LEADOUT ) { | ||
482 | status = CD_STOPPED; | ||
483 | } else { | ||
484 | status = CD_PAUSED; | ||
485 | } | ||
486 | break; | ||
487 | default: | ||
488 | status = CD_ERROR; | ||
489 | break; | ||
490 | } | ||
491 | } | ||
492 | if ( position ) { | ||
493 | if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | ||
494 | *position = MSF_TO_FRAMES( | ||
495 | info.cdsc_absaddr.msf.minute, | ||
496 | info.cdsc_absaddr.msf.second, | ||
497 | info.cdsc_absaddr.msf.frame); | ||
498 | } else { | ||
499 | *position = 0; | ||
500 | } | ||
501 | } | ||
502 | return(status); | ||
503 | } | ||
504 | |||
505 | /* Start play */ | ||
506 | static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | ||
507 | { | ||
508 | struct cdrom_msf playtime; | ||
509 | |||
510 | FRAMES_TO_MSF(start, | ||
511 | &playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0); | ||
512 | FRAMES_TO_MSF(start+length, | ||
513 | &playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1); | ||
514 | #ifdef DEBUG_CDROM | ||
515 | fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", | ||
516 | playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, | ||
517 | playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); | ||
518 | #endif | ||
519 | return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime)); | ||
520 | } | ||
521 | |||
522 | /* Pause play */ | ||
523 | static int SDL_SYS_CDPause(SDL_CD *cdrom) | ||
524 | { | ||
525 | return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0)); | ||
526 | } | ||
527 | |||
528 | /* Resume play */ | ||
529 | static int SDL_SYS_CDResume(SDL_CD *cdrom) | ||
530 | { | ||
531 | return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0)); | ||
532 | } | ||
533 | |||
534 | /* Stop play */ | ||
535 | static int SDL_SYS_CDStop(SDL_CD *cdrom) | ||
536 | { | ||
537 | return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0)); | ||
538 | } | ||
539 | |||
540 | /* Eject the CD-ROM */ | ||
541 | static int SDL_SYS_CDEject(SDL_CD *cdrom) | ||
542 | { | ||
543 | return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0)); | ||
544 | } | ||
545 | |||
546 | /* Close the CD-ROM handle */ | ||
547 | static void SDL_SYS_CDClose(SDL_CD *cdrom) | ||
548 | { | ||
549 | close(cdrom->id); | ||
550 | } | ||
551 | |||
552 | void SDL_SYS_CDQuit(void) | ||
553 | { | ||
554 | int i; | ||
555 | |||
556 | if ( SDL_numcds > 0 ) { | ||
557 | for ( i=0; i<SDL_numcds; ++i ) { | ||
558 | SDL_free(SDL_cdlist[i]); | ||
559 | } | ||
560 | SDL_numcds = 0; | ||
561 | } | ||
562 | } | ||
563 | |||
564 | #endif /* SDL_CDROM_LINUX */ | ||