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_BEOS
25
26 /* Functions for system-level CD-ROM audio control on BeOS
27 (not completely implemented yet)
28 */
29
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #include <unistd.h>
33
34 #include <scsi.h>
35 #include <Directory.h>
36 #include <Entry.h>
37 #include <Path.h>
38
39 #include "SDL_cdrom.h"
40 extern "C" {
41 #include "../SDL_syscdrom.h"
42 }
43
44 /* Constants to help us get at the SCSI table-of-contents info */
45 #define CD_NUMTRACKS(toc) toc.toc_data[3]
46 #define CD_TRACK(toc, track) (&toc.toc_data[6+(track)*8])
47 #define CD_TRACK_N(toc, track) CD_TRACK(toc, track)[0]
48 #define CD_TRACK_M(toc, track) CD_TRACK(toc, track)[3]
49 #define CD_TRACK_S(toc, track) CD_TRACK(toc, track)[4]
50 #define CD_TRACK_F(toc, track) CD_TRACK(toc, track)[5]
51
52 /* Constants to help us get at the SCSI position info */
53 #define POS_TRACK(pos) pos.position[6]
54 #define POS_ABS_M(pos) pos.position[9]
55 #define POS_ABS_S(pos) pos.position[10]
56 #define POS_ABS_F(pos) pos.position[11]
57 #define POS_REL_M(pos) pos.position[13]
58 #define POS_REL_S(pos) pos.position[14]
59 #define POS_REL_F(pos) pos.position[15]
60
61 /* The maximum number of CD-ROM drives we'll detect */
62 #define MAX_DRIVES 16
63
64 /* A list of available CD-ROM drives */
65 static char *SDL_cdlist[MAX_DRIVES];
66
67 /* The system-dependent CD control functions */
68 static const char *SDL_SYS_CDName(int drive);
69 static int SDL_SYS_CDOpen(int drive);
70 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
71 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
72 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
73 static int SDL_SYS_CDPause(SDL_CD *cdrom);
74 static int SDL_SYS_CDResume(SDL_CD *cdrom);
75 static int SDL_SYS_CDStop(SDL_CD *cdrom);
76 static int SDL_SYS_CDEject(SDL_CD *cdrom);
77 static void SDL_SYS_CDClose(SDL_CD *cdrom);
78 int try_dir(const char *directory);
79
80
81 /* Check a drive to see if it is a CD-ROM */
CheckDrive(char * drive)82 static int CheckDrive(char *drive)
83 {
84 struct stat stbuf;
85 int is_cd, cdfd;
86 device_geometry info;
87
88 /* If it doesn't exist, return -1 */
89 if ( stat(drive, &stbuf) < 0 ) {
90 return(-1);
91 }
92
93 /* If it does exist, verify that it's an available CD-ROM */
94 is_cd = 0;
95 cdfd = open(drive, 0);
96 if ( cdfd >= 0 ) {
97 if ( ioctl(cdfd, B_GET_GEOMETRY, &info) == B_NO_ERROR ) {
98 if ( info.device_type == B_CD ) {
99 is_cd = 1;
100 }
101 }
102 close(cdfd);
103 } else {
104 /* This can happen when the drive is open .. (?) */;
105 is_cd = 1;
106 }
107 return(is_cd);
108 }
109
110 /* Add a CD-ROM drive to our list of valid drives */
AddDrive(char * drive)111 static void AddDrive(char *drive)
112 {
113 int i;
114 size_t len;
115
116 if ( SDL_numcds < MAX_DRIVES ) {
117 /* Add this drive to our list */
118 i = SDL_numcds;
119 len = SDL_strlen(drive)+1;
120 SDL_cdlist[i] = (char *)SDL_malloc(len);
121 if ( SDL_cdlist[i] == NULL ) {
122 SDL_OutOfMemory();
123 return;
124 }
125 SDL_strlcpy(SDL_cdlist[i], drive, len);
126 ++SDL_numcds;
127 #ifdef CDROM_DEBUG
128 fprintf(stderr, "Added CD-ROM drive: %s\n", drive);
129 #endif
130 }
131 }
132
133 /* IDE bus scanning magic */
134 enum {
135 IDE_GET_DEVICES_INFO = B_DEVICE_OP_CODES_END + 50,
136 };
137 struct ide_ctrl_info {
138 bool ide_0_present;
139 bool ide_0_master_present;
140 bool ide_0_slave_present;
141 int ide_0_master_type;
142 int ide_0_slave_type;
143 bool ide_1_present;
144 bool ide_1_master_present;
145 bool ide_1_slave_present;
146 int ide_1_master_type;
147 int ide_1_slave_type;
148 };
149
SDL_SYS_CDInit(void)150 int SDL_SYS_CDInit(void)
151 {
152 char *SDLcdrom;
153
154 /* Fill in our driver capabilities */
155 SDL_CDcaps.Name = SDL_SYS_CDName;
156 SDL_CDcaps.Open = SDL_SYS_CDOpen;
157 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
158 SDL_CDcaps.Status = SDL_SYS_CDStatus;
159 SDL_CDcaps.Play = SDL_SYS_CDPlay;
160 SDL_CDcaps.Pause = SDL_SYS_CDPause;
161 SDL_CDcaps.Resume = SDL_SYS_CDResume;
162 SDL_CDcaps.Stop = SDL_SYS_CDStop;
163 SDL_CDcaps.Eject = SDL_SYS_CDEject;
164 SDL_CDcaps.Close = SDL_SYS_CDClose;
165
166 /* Look in the environment for our CD-ROM drive list */
167 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */
168 if ( SDLcdrom != NULL ) {
169 char *cdpath, *delim;
170 size_t len = SDL_strlen(SDLcdrom)+1;
171 cdpath = SDL_stack_alloc(char, len);
172 if ( cdpath != NULL ) {
173 SDL_strlcpy(cdpath, SDLcdrom, len);
174 SDLcdrom = cdpath;
175 do {
176 delim = SDL_strchr(SDLcdrom, ':');
177 if ( delim ) {
178 *delim++ = '\0';
179 }
180 if ( CheckDrive(SDLcdrom) > 0 ) {
181 AddDrive(SDLcdrom);
182 }
183 if ( delim ) {
184 SDLcdrom = delim;
185 } else {
186 SDLcdrom = NULL;
187 }
188 } while ( SDLcdrom );
189 SDL_stack_free(cdpath);
190 }
191
192 /* If we found our drives, there's nothing left to do */
193 if ( SDL_numcds > 0 ) {
194 return(0);
195 }
196 }
197
198 /* Scan the system for CD-ROM drives */
199 try_dir("/dev/disk");
200 return 0;
201 }
202
203
try_dir(const char * directory)204 int try_dir(const char *directory)
205 {
206 BDirectory dir;
207 dir.SetTo(directory);
208 if(dir.InitCheck() != B_NO_ERROR) {
209 return false;
210 }
211 dir.Rewind();
212 BEntry entry;
213 while(dir.GetNextEntry(&entry) >= 0) {
214 BPath path;
215 const char *name;
216 entry_ref e;
217
218 if(entry.GetPath(&path) != B_NO_ERROR)
219 continue;
220 name = path.Path();
221
222 if(entry.GetRef(&e) != B_NO_ERROR)
223 continue;
224
225 if(entry.IsDirectory()) {
226 if(SDL_strcmp(e.name, "floppy") == 0)
227 continue; /* ignore floppy (it is not silent) */
228 int devfd = try_dir(name);
229 if(devfd >= 0)
230 return devfd;
231 }
232 else {
233 int devfd;
234 device_geometry g;
235
236 if(SDL_strcmp(e.name, "raw") != 0)
237 continue; /* ignore partitions */
238
239 devfd = open(name, O_RDONLY);
240 if(devfd < 0)
241 continue;
242
243 if(ioctl(devfd, B_GET_GEOMETRY, &g, sizeof(g)) >= 0) {
244 if(g.device_type == B_CD)
245 {
246 AddDrive(strdup(name));
247 }
248 }
249 close(devfd);
250 }
251 }
252 return B_ERROR;
253 }
254
255
256 /* General ioctl() CD-ROM command function */
SDL_SYS_CDioctl(int index,int command,void * arg)257 static int SDL_SYS_CDioctl(int index, int command, void *arg)
258 {
259 int okay;
260 int fd;
261
262 okay = 0;
263 fd = open(SDL_cdlist[index], 0);
264 if ( fd >= 0 ) {
265 if ( ioctl(fd, command, arg) == B_NO_ERROR ) {
266 okay = 1;
267 }
268 close(fd);
269 }
270 return(okay ? 0 : -1);
271 }
272
SDL_SYS_CDName(int drive)273 static const char *SDL_SYS_CDName(int drive)
274 {
275 return(SDL_cdlist[drive]);
276 }
277
SDL_SYS_CDOpen(int drive)278 static int SDL_SYS_CDOpen(int drive)
279 {
280 return(drive);
281 }
282
SDL_SYS_CDGetTOC(SDL_CD * cdrom)283 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
284 {
285 int i;
286 scsi_toc toc;
287
288 if ( SDL_SYS_CDioctl(cdrom->id, B_SCSI_GET_TOC, &toc) == 0 ) {
289 cdrom->numtracks = CD_NUMTRACKS(toc);
290 if ( cdrom->numtracks > SDL_MAX_TRACKS ) {
291 cdrom->numtracks = SDL_MAX_TRACKS;
292 }
293 for ( i=0; i<=cdrom->numtracks; ++i ) {
294 cdrom->track[i].id = CD_TRACK_N(toc, i);
295 /* FIXME: How do we tell on BeOS? */
296 cdrom->track[i].type = SDL_AUDIO_TRACK;
297 cdrom->track[i].offset = MSF_TO_FRAMES(
298 CD_TRACK_M(toc, i),
299 CD_TRACK_S(toc, i),
300 CD_TRACK_F(toc, i));
301 cdrom->track[i].length = 0;
302 if ( i > 0 ) {
303 cdrom->track[i-1].length =
304 cdrom->track[i].offset-
305 cdrom->track[i-1].offset;
306 }
307 }
308 return(0);
309 } else {
310 return(-1);
311 }
312 }
313
314 /* Get CD-ROM status */
SDL_SYS_CDStatus(SDL_CD * cdrom,int * position)315 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
316 {
317 CDstatus status;
318 int fd;
319 int cur_frame;
320 scsi_position pos;
321
322 fd = open(SDL_cdlist[cdrom->id], 0);
323 cur_frame = 0;
324 if ( fd >= 0 ) {
325 if ( ioctl(fd, B_SCSI_GET_POSITION, &pos) == B_NO_ERROR ) {
326 cur_frame = MSF_TO_FRAMES(
327 POS_ABS_M(pos), POS_ABS_S(pos), POS_ABS_F(pos));
328 }
329 if ( ! pos.position[1] || (pos.position[1] >= 0x13) ||
330 ((pos.position[1] == 0x12) && (!pos.position[6])) ) {
331 status = CD_STOPPED;
332 } else
333 if ( pos.position[1] == 0x11 ) {
334 status = CD_PLAYING;
335 } else {
336 status = CD_PAUSED;
337 }
338 close(fd);
339 } else {
340 status = CD_TRAYEMPTY;
341 }
342 if ( position ) {
343 *position = cur_frame;
344 }
345 return(status);
346 }
347
348 /* Start play */
SDL_SYS_CDPlay(SDL_CD * cdrom,int start,int length)349 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
350 {
351 int okay;
352 int fd;
353 scsi_play_position pos;
354
355 okay = 0;
356 fd = open(SDL_cdlist[cdrom->id], 0);
357 if ( fd >= 0 ) {
358 FRAMES_TO_MSF(start, &pos.start_m, &pos.start_s, &pos.start_f);
359 FRAMES_TO_MSF(start+length, &pos.end_m, &pos.end_s, &pos.end_f);
360 if ( ioctl(fd, B_SCSI_PLAY_POSITION, &pos) == B_NO_ERROR ) {
361 okay = 1;
362 }
363 close(fd);
364 }
365 return(okay ? 0 : -1);
366 }
367
368 /* Pause play */
SDL_SYS_CDPause(SDL_CD * cdrom)369 static int SDL_SYS_CDPause(SDL_CD *cdrom)
370 {
371 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_PAUSE_AUDIO, 0));
372 }
373
374 /* Resume play */
SDL_SYS_CDResume(SDL_CD * cdrom)375 static int SDL_SYS_CDResume(SDL_CD *cdrom)
376 {
377 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_RESUME_AUDIO, 0));
378 }
379
380 /* Stop play */
SDL_SYS_CDStop(SDL_CD * cdrom)381 static int SDL_SYS_CDStop(SDL_CD *cdrom)
382 {
383 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_STOP_AUDIO, 0));
384 }
385
386 /* Eject the CD-ROM */
SDL_SYS_CDEject(SDL_CD * cdrom)387 static int SDL_SYS_CDEject(SDL_CD *cdrom)
388 {
389 return(SDL_SYS_CDioctl(cdrom->id, B_SCSI_EJECT, 0));
390 }
391
392 /* Close the CD-ROM handle */
SDL_SYS_CDClose(SDL_CD * cdrom)393 static void SDL_SYS_CDClose(SDL_CD *cdrom)
394 {
395 close(cdrom->id);
396 }
397
SDL_SYS_CDQuit(void)398 void SDL_SYS_CDQuit(void)
399 {
400 int i;
401
402 if ( SDL_numcds > 0 ) {
403 for ( i=0; i<SDL_numcds; ++i ) {
404 SDL_free(SDL_cdlist[i]);
405 }
406 SDL_numcds = 0;
407 }
408 }
409
410 #endif /* SDL_CDROM_BEOS */
411