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ef79bbde P |
1 | /*************************************************************************** |
2 | * Copyright (C) 2007 PCSX-df Team * | |
3 | * Copyright (C) 2009 Wei Mingzhi * | |
4 | * * | |
5 | * This program is free software; you can redistribute it and/or modify * | |
6 | * it under the terms of the GNU General Public License as published by * | |
7 | * the Free Software Foundation; either version 2 of the License, or * | |
8 | * (at your option) any later version. * | |
9 | * * | |
10 | * This program 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 * | |
13 | * GNU General Public License for more details. * | |
14 | * * | |
15 | * You should have received a copy of the GNU General Public License * | |
16 | * along with this program; if not, write to the * | |
17 | * Free Software Foundation, Inc., * | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
19 | ***************************************************************************/ | |
20 | ||
21 | #include "psxcommon.h" | |
22 | #include "plugins.h" | |
23 | #include "cdrom.h" | |
24 | #include "cdriso.h" | |
25 | ||
26 | #ifdef _WIN32 | |
27 | #include <process.h> | |
28 | #include <windows.h> | |
29 | #else | |
30 | #include <pthread.h> | |
31 | #include <sys/time.h> | |
32 | #endif | |
33 | ||
34 | static FILE *cdHandle = NULL; | |
35 | static FILE *cddaHandle = NULL; | |
36 | static FILE *subHandle = NULL; | |
37 | ||
38 | static boolean subChanMixed = FALSE; | |
39 | static boolean subChanRaw = FALSE; | |
40 | ||
41 | static unsigned char cdbuffer[DATA_SIZE]; | |
42 | static unsigned char subbuffer[SUB_FRAMESIZE]; | |
43 | ||
44 | static unsigned char sndbuffer[CD_FRAMESIZE_RAW * 10]; | |
45 | ||
46 | #define CDDA_FRAMETIME (1000 * (sizeof(sndbuffer) / CD_FRAMESIZE_RAW) / 75) | |
47 | ||
48 | #ifdef _WIN32 | |
49 | static HANDLE threadid; | |
50 | #else | |
51 | static pthread_t threadid; | |
52 | #endif | |
53 | static unsigned int initial_offset = 0; | |
38b8102c | 54 | static boolean playing = FALSE; |
ef79bbde | 55 | static boolean cddaBigEndian = FALSE; |
38b8102c | 56 | static unsigned int cddaCurOffset = 0; |
57 | static unsigned int cddaStartOffset; | |
ef79bbde P |
58 | |
59 | char* CALLBACK CDR__getDriveLetter(void); | |
60 | long CALLBACK CDR__configure(void); | |
61 | long CALLBACK CDR__test(void); | |
62 | void CALLBACK CDR__about(void); | |
63 | long CALLBACK CDR__setfilename(char *filename); | |
64 | long CALLBACK CDR__getStatus(struct CdrStat *stat); | |
65 | ||
66 | extern void *hCDRDriver; | |
67 | ||
68 | struct trackinfo { | |
69 | enum {DATA, CDDA} type; | |
70 | char start[3]; // MSF-format | |
71 | char length[3]; // MSF-format | |
38b8102c | 72 | FILE *handle; // for multi-track images CDDA |
ef79bbde P |
73 | }; |
74 | ||
75 | #define MAXTRACKS 100 /* How many tracks can a CD hold? */ | |
76 | ||
77 | static int numtracks = 0; | |
78 | static struct trackinfo ti[MAXTRACKS]; | |
79 | ||
80 | // get a sector from a msf-array | |
81 | static unsigned int msf2sec(char *msf) { | |
82 | return ((msf[0] * 60 + msf[1]) * 75) + msf[2]; | |
83 | } | |
84 | ||
85 | static void sec2msf(unsigned int s, char *msf) { | |
86 | msf[0] = s / 75 / 60; | |
87 | s = s - msf[0] * 75 * 60; | |
88 | msf[1] = s / 75; | |
89 | s = s - msf[1] * 75; | |
90 | msf[2] = s; | |
91 | } | |
92 | ||
93 | // divide a string of xx:yy:zz into m, s, f | |
94 | static void tok2msf(char *time, char *msf) { | |
95 | char *token; | |
96 | ||
97 | token = strtok(time, ":"); | |
98 | if (token) { | |
99 | msf[0] = atoi(token); | |
100 | } | |
101 | else { | |
102 | msf[0] = 0; | |
103 | } | |
104 | ||
105 | token = strtok(NULL, ":"); | |
106 | if (token) { | |
107 | msf[1] = atoi(token); | |
108 | } | |
109 | else { | |
110 | msf[1] = 0; | |
111 | } | |
112 | ||
113 | token = strtok(NULL, ":"); | |
114 | if (token) { | |
115 | msf[2] = atoi(token); | |
116 | } | |
117 | else { | |
118 | msf[2] = 0; | |
119 | } | |
120 | } | |
121 | ||
122 | #ifndef _WIN32 | |
123 | static long GetTickCount(void) { | |
124 | static time_t initial_time = 0; | |
125 | struct timeval now; | |
126 | ||
127 | gettimeofday(&now, NULL); | |
128 | ||
129 | if (initial_time == 0) { | |
130 | initial_time = now.tv_sec; | |
131 | } | |
132 | ||
133 | return (now.tv_sec - initial_time) * 1000L + now.tv_usec / 1000L; | |
134 | } | |
135 | #endif | |
136 | ||
137 | // this thread plays audio data | |
138 | #ifdef _WIN32 | |
139 | static void playthread(void *param) | |
140 | #else | |
141 | static void *playthread(void *param) | |
142 | #endif | |
143 | { | |
144 | long d, t, i, s; | |
145 | unsigned char tmp; | |
146 | ||
147 | t = GetTickCount(); | |
148 | ||
149 | while (playing) { | |
150 | d = t - (long)GetTickCount(); | |
151 | if (d <= 0) { | |
152 | d = 1; | |
153 | } | |
154 | else if (d > CDDA_FRAMETIME) { | |
155 | d = CDDA_FRAMETIME; | |
156 | } | |
157 | #ifdef _WIN32 | |
158 | Sleep(d); | |
159 | #else | |
160 | usleep(d * 1000); | |
161 | #endif | |
d4a1e87d | 162 | // HACK: stop feeding data while emu is paused |
163 | extern int stop; | |
164 | if (stop) { | |
165 | usleep(100000); | |
166 | continue; | |
167 | } | |
ef79bbde P |
168 | |
169 | t = GetTickCount() + CDDA_FRAMETIME; | |
170 | ||
171 | if (subChanMixed) { | |
172 | s = 0; | |
173 | ||
174 | for (i = 0; i < sizeof(sndbuffer) / CD_FRAMESIZE_RAW; i++) { | |
175 | // read one sector | |
176 | d = fread(sndbuffer + CD_FRAMESIZE_RAW * i, 1, CD_FRAMESIZE_RAW, cddaHandle); | |
177 | if (d < CD_FRAMESIZE_RAW) { | |
178 | break; | |
179 | } | |
180 | ||
181 | s += d; | |
182 | ||
183 | // skip the subchannel data | |
184 | fseek(cddaHandle, SUB_FRAMESIZE, SEEK_CUR); | |
185 | } | |
186 | } | |
187 | else { | |
188 | s = fread(sndbuffer, 1, sizeof(sndbuffer), cddaHandle); | |
189 | } | |
190 | ||
191 | if (s == 0) { | |
192 | playing = FALSE; | |
ef79bbde P |
193 | initial_offset = 0; |
194 | break; | |
195 | } | |
196 | ||
197 | if (!cdr.Muted && playing) { | |
198 | if (cddaBigEndian) { | |
199 | for (i = 0; i < s / 2; i++) { | |
200 | tmp = sndbuffer[i * 2]; | |
201 | sndbuffer[i * 2] = sndbuffer[i * 2 + 1]; | |
202 | sndbuffer[i * 2 + 1] = tmp; | |
203 | } | |
204 | } | |
205 | ||
206 | SPU_playCDDAchannel((short *)sndbuffer, s); | |
207 | } | |
208 | ||
209 | cddaCurOffset += s; | |
210 | } | |
211 | ||
212 | #ifdef _WIN32 | |
213 | _endthread(); | |
214 | #else | |
215 | pthread_exit(0); | |
216 | return NULL; | |
217 | #endif | |
218 | } | |
219 | ||
220 | // stop the CDDA playback | |
221 | static void stopCDDA() { | |
222 | if (!playing) { | |
223 | return; | |
224 | } | |
225 | ||
226 | playing = FALSE; | |
227 | #ifdef _WIN32 | |
228 | WaitForSingleObject(threadid, INFINITE); | |
229 | #else | |
230 | pthread_join(threadid, NULL); | |
231 | #endif | |
232 | ||
ef79bbde P |
233 | initial_offset = 0; |
234 | } | |
235 | ||
236 | // start the CDDA playback | |
237 | static void startCDDA(unsigned int offset) { | |
238 | if (playing) { | |
239 | if (initial_offset == offset) { | |
240 | return; | |
241 | } | |
242 | stopCDDA(); | |
243 | } | |
244 | ||
ef79bbde P |
245 | initial_offset = offset; |
246 | cddaCurOffset = initial_offset; | |
247 | fseek(cddaHandle, initial_offset, SEEK_SET); | |
248 | ||
249 | playing = TRUE; | |
250 | ||
251 | #ifdef _WIN32 | |
252 | threadid = (HANDLE)_beginthread(playthread, 0, NULL); | |
253 | #else | |
254 | pthread_create(&threadid, NULL, playthread, NULL); | |
255 | #endif | |
256 | } | |
257 | ||
258 | // this function tries to get the .toc file of the given .bin | |
259 | // the necessary data is put into the ti (trackinformation)-array | |
260 | static int parsetoc(const char *isofile) { | |
261 | char tocname[MAXPATHLEN]; | |
262 | FILE *fi; | |
263 | char linebuf[256], dummy[256], name[256]; | |
264 | char *token; | |
265 | char time[20], time2[20]; | |
266 | unsigned int t; | |
267 | ||
268 | numtracks = 0; | |
269 | ||
270 | // copy name of the iso and change extension from .bin to .toc | |
271 | strncpy(tocname, isofile, sizeof(tocname)); | |
272 | tocname[MAXPATHLEN - 1] = '\0'; | |
273 | if (strlen(tocname) >= 4) { | |
274 | strcpy(tocname + strlen(tocname) - 4, ".toc"); | |
275 | } | |
276 | else { | |
277 | return -1; | |
278 | } | |
279 | ||
280 | if ((fi = fopen(tocname, "r")) == NULL) { | |
281 | // try changing extension to .cue (to satisfy some stupid tutorials) | |
282 | strcpy(tocname + strlen(tocname) - 4, ".cue"); | |
283 | if ((fi = fopen(tocname, "r")) == NULL) { | |
284 | // if filename is image.toc.bin, try removing .bin (for Brasero) | |
285 | strcpy(tocname, isofile); | |
286 | t = strlen(tocname); | |
287 | if (t >= 8 && strcmp(tocname + t - 8, ".toc.bin") == 0) { | |
288 | tocname[t - 4] = '\0'; | |
289 | if ((fi = fopen(tocname, "r")) == NULL) { | |
290 | return -1; | |
291 | } | |
292 | } | |
293 | else { | |
294 | return -1; | |
295 | } | |
296 | } | |
297 | } | |
298 | ||
299 | memset(&ti, 0, sizeof(ti)); | |
300 | cddaBigEndian = TRUE; // cdrdao uses big-endian for CD Audio | |
301 | ||
302 | // parse the .toc file | |
303 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { | |
304 | // search for tracks | |
305 | strncpy(dummy, linebuf, sizeof(linebuf)); | |
306 | token = strtok(dummy, " "); | |
307 | ||
308 | if (token == NULL) continue; | |
309 | ||
310 | if (!strcmp(token, "TRACK")) { | |
311 | // get type of track | |
312 | token = strtok(NULL, " "); | |
313 | numtracks++; | |
314 | ||
315 | if (!strncmp(token, "MODE2_RAW", 9)) { | |
316 | ti[numtracks].type = DATA; | |
317 | sec2msf(2 * 75, ti[numtracks].start); // assume data track on 0:2:0 | |
318 | ||
319 | // check if this image contains mixed subchannel data | |
320 | token = strtok(NULL, " "); | |
321 | if (token != NULL && !strncmp(token, "RW_RAW", 6)) { | |
322 | subChanMixed = TRUE; | |
323 | subChanRaw = TRUE; | |
324 | } | |
325 | } | |
326 | else if (!strncmp(token, "AUDIO", 5)) { | |
327 | ti[numtracks].type = CDDA; | |
328 | } | |
329 | } | |
330 | else if (!strcmp(token, "DATAFILE")) { | |
331 | if (ti[numtracks].type == CDDA) { | |
332 | sscanf(linebuf, "DATAFILE \"%[^\"]\" #%d %8s", name, &t, time2); | |
333 | t /= CD_FRAMESIZE_RAW + (subChanMixed ? SUB_FRAMESIZE : 0); | |
334 | t += 2 * 75; | |
335 | sec2msf(t, (char *)&ti[numtracks].start); | |
336 | tok2msf((char *)&time2, (char *)&ti[numtracks].length); | |
337 | } | |
338 | else { | |
339 | sscanf(linebuf, "DATAFILE \"%[^\"]\" %8s", name, time); | |
340 | tok2msf((char *)&time, (char *)&ti[numtracks].length); | |
341 | } | |
342 | } | |
343 | else if (!strcmp(token, "FILE")) { | |
344 | sscanf(linebuf, "FILE \"%[^\"]\" #%d %8s %8s", name, &t, time, time2); | |
345 | tok2msf((char *)&time, (char *)&ti[numtracks].start); | |
346 | t /= CD_FRAMESIZE_RAW + (subChanMixed ? SUB_FRAMESIZE : 0); | |
347 | t += msf2sec(ti[numtracks].start) + 2 * 75; | |
348 | sec2msf(t, (char *)&ti[numtracks].start); | |
349 | tok2msf((char *)&time2, (char *)&ti[numtracks].length); | |
350 | } | |
351 | } | |
352 | ||
353 | fclose(fi); | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | // this function tries to get the .cue file of the given .bin | |
359 | // the necessary data is put into the ti (trackinformation)-array | |
360 | static int parsecue(const char *isofile) { | |
361 | char cuename[MAXPATHLEN]; | |
38b8102c | 362 | char filepath[MAXPATHLEN]; |
363 | char *incue_fname; | |
ef79bbde P |
364 | FILE *fi; |
365 | char *token; | |
366 | char time[20]; | |
367 | char *tmp; | |
368 | char linebuf[256], dummy[256]; | |
38b8102c | 369 | unsigned int incue_max_len; |
370 | unsigned int t, i, total, file_len; | |
ef79bbde P |
371 | |
372 | numtracks = 0; | |
373 | ||
374 | // copy name of the iso and change extension from .bin to .cue | |
375 | strncpy(cuename, isofile, sizeof(cuename)); | |
376 | cuename[MAXPATHLEN - 1] = '\0'; | |
377 | if (strlen(cuename) >= 4) { | |
378 | strcpy(cuename + strlen(cuename) - 4, ".cue"); | |
379 | } | |
380 | else { | |
381 | return -1; | |
382 | } | |
383 | ||
384 | if ((fi = fopen(cuename, "r")) == NULL) { | |
385 | return -1; | |
386 | } | |
387 | ||
388 | // Some stupid tutorials wrongly tell users to use cdrdao to rip a | |
389 | // "bin/cue" image, which is in fact a "bin/toc" image. So let's check | |
390 | // that... | |
391 | if (fgets(linebuf, sizeof(linebuf), fi) != NULL) { | |
392 | if (!strncmp(linebuf, "CD_ROM_XA", 9)) { | |
393 | // Don't proceed further, as this is actually a .toc file rather | |
394 | // than a .cue file. | |
395 | fclose(fi); | |
396 | return parsetoc(isofile); | |
397 | } | |
398 | fseek(fi, 0, SEEK_SET); | |
399 | } | |
400 | ||
38b8102c | 401 | // build a path for files referenced in .cue |
402 | strncpy(filepath, cuename, sizeof(filepath)); | |
403 | tmp = strrchr(filepath, '/') + 1; | |
404 | if (tmp == NULL) | |
405 | tmp = strrchr(filepath, '\\') + 1; | |
406 | if (tmp == NULL) | |
407 | tmp = filepath; | |
408 | *tmp = 0; | |
409 | filepath[sizeof(filepath) - 1] = 0; | |
410 | incue_fname = tmp; | |
411 | incue_max_len = sizeof(filepath) - (tmp - filepath) - 1; | |
412 | ||
ef79bbde P |
413 | memset(&ti, 0, sizeof(ti)); |
414 | ||
415 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { | |
416 | strncpy(dummy, linebuf, sizeof(linebuf)); | |
417 | token = strtok(dummy, " "); | |
418 | ||
419 | if (token == NULL) { | |
420 | continue; | |
421 | } | |
422 | ||
423 | if (!strcmp(token, "TRACK")){ | |
424 | numtracks++; | |
425 | ||
426 | if (strstr(linebuf, "AUDIO") != NULL) { | |
427 | ti[numtracks].type = CDDA; | |
428 | } | |
429 | else if (strstr(linebuf, "MODE1/2352") != NULL || strstr(linebuf, "MODE2/2352") != NULL) { | |
430 | ti[numtracks].type = DATA; | |
431 | } | |
432 | } | |
433 | else if (!strcmp(token, "INDEX")) { | |
434 | tmp = strstr(linebuf, "INDEX"); | |
435 | if (tmp != NULL) { | |
436 | tmp += strlen("INDEX") + 3; // 3 - space + numeric index | |
437 | while (*tmp == ' ') tmp++; | |
438 | if (*tmp != '\n') sscanf(tmp, "%8s", time); | |
439 | } | |
440 | ||
441 | tok2msf((char *)&time, (char *)&ti[numtracks].start); | |
442 | ||
443 | t = msf2sec(ti[numtracks].start) + 2 * 75; | |
444 | sec2msf(t, ti[numtracks].start); | |
38b8102c | 445 | } |
446 | else if (!strcmp(token, "FILE")) { | |
447 | tmp = strstr(linebuf, "FILE"); | |
448 | if (tmp == NULL) { | |
449 | continue; | |
450 | } | |
451 | tmp += 4; | |
452 | while (*tmp == ' ') | |
453 | tmp++; | |
454 | if (*tmp == '"') { | |
455 | token = tmp + 1; | |
456 | tmp = strchr(token, '"'); | |
457 | if (tmp != NULL) | |
458 | *tmp = 0; | |
459 | } | |
460 | else { | |
461 | token = tmp; | |
462 | tmp = strchr(token, ' '); | |
463 | if (tmp != NULL) | |
464 | *tmp = 0; | |
465 | } | |
ef79bbde | 466 | |
38b8102c | 467 | strncpy(incue_fname, token, incue_max_len); |
468 | ti[numtracks + 1].handle = fopen(filepath, "rb"); | |
469 | if (ti[numtracks + 1].handle == NULL) { | |
470 | SysPrintf(_("could not open: %s\n"), filepath); | |
471 | } | |
472 | else if (numtracks == 0 && strlen(isofile) >= 4 && | |
473 | strcmp(isofile + strlen(isofile) - 4, ".cue") == 0) { | |
474 | // user selected .cue as image file, use it's data track instead | |
475 | fclose(cdHandle); | |
476 | cdHandle = fopen(filepath, "rb"); | |
ef79bbde P |
477 | } |
478 | } | |
479 | } | |
480 | ||
481 | fclose(fi); | |
482 | ||
38b8102c | 483 | // make corrections for multi-track .cue, fill track lengths |
484 | total = 2 * 75; | |
485 | file_len = 0; | |
486 | for (i = 1; i <= numtracks; i++) { | |
487 | if (ti[i].handle != NULL) { | |
488 | sec2msf(total, ti[i].start); | |
489 | fseek(ti[i].handle, 0, SEEK_END); | |
490 | file_len = ftell(ti[i].handle) / 2352; | |
491 | sec2msf(file_len, ti[i].length); | |
492 | total += file_len; | |
493 | } | |
494 | else { | |
495 | // this track uses the same file as the last, | |
496 | // start of this track is last track's end | |
497 | if (i > 1) { | |
498 | t = msf2sec(ti[i].start) - msf2sec(ti[i - 1].start); | |
499 | sec2msf(t, ti[i - 1].length); | |
500 | } | |
501 | t = file_len - msf2sec(ti[i].start) + 2 * 75; | |
502 | sec2msf(t, ti[i].length); | |
503 | } | |
ef79bbde P |
504 | } |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
509 | // this function tries to get the .ccd file of the given .img | |
510 | // the necessary data is put into the ti (trackinformation)-array | |
511 | static int parseccd(const char *isofile) { | |
512 | char ccdname[MAXPATHLEN]; | |
513 | FILE *fi; | |
514 | char linebuf[256]; | |
515 | unsigned int t; | |
516 | ||
517 | numtracks = 0; | |
518 | ||
519 | // copy name of the iso and change extension from .img to .ccd | |
520 | strncpy(ccdname, isofile, sizeof(ccdname)); | |
521 | ccdname[MAXPATHLEN - 1] = '\0'; | |
522 | if (strlen(ccdname) >= 4) { | |
523 | strcpy(ccdname + strlen(ccdname) - 4, ".ccd"); | |
524 | } | |
525 | else { | |
526 | return -1; | |
527 | } | |
528 | ||
529 | if ((fi = fopen(ccdname, "r")) == NULL) { | |
530 | return -1; | |
531 | } | |
532 | ||
533 | memset(&ti, 0, sizeof(ti)); | |
534 | ||
535 | while (fgets(linebuf, sizeof(linebuf), fi) != NULL) { | |
536 | if (!strncmp(linebuf, "[TRACK", 6)){ | |
537 | numtracks++; | |
538 | } | |
539 | else if (!strncmp(linebuf, "MODE=", 5)) { | |
540 | sscanf(linebuf, "MODE=%d", &t); | |
541 | ti[numtracks].type = ((t == 0) ? CDDA : DATA); | |
542 | } | |
543 | else if (!strncmp(linebuf, "INDEX 1=", 8)) { | |
544 | sscanf(linebuf, "INDEX 1=%d", &t); | |
545 | sec2msf(t + 2 * 75, ti[numtracks].start); | |
546 | ||
547 | // If we've already seen another track, this is its end | |
548 | if (numtracks > 1) { | |
549 | t = msf2sec(ti[numtracks].start) - msf2sec(ti[numtracks - 1].start); | |
550 | sec2msf(t, ti[numtracks - 1].length); | |
551 | } | |
552 | } | |
553 | } | |
554 | ||
555 | fclose(fi); | |
556 | ||
557 | // Fill out the last track's end based on size | |
558 | if (numtracks >= 1) { | |
559 | fseek(cdHandle, 0, SEEK_END); | |
560 | t = ftell(cdHandle) / 2352 - msf2sec(ti[numtracks].start) + 2 * 75; | |
561 | sec2msf(t, ti[numtracks].length); | |
562 | } | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | // this function tries to get the .mds file of the given .mdf | |
568 | // the necessary data is put into the ti (trackinformation)-array | |
569 | static int parsemds(const char *isofile) { | |
570 | char mdsname[MAXPATHLEN]; | |
571 | FILE *fi; | |
572 | unsigned int offset, extra_offset, l, i; | |
573 | unsigned short s; | |
574 | ||
575 | numtracks = 0; | |
576 | ||
577 | // copy name of the iso and change extension from .mdf to .mds | |
578 | strncpy(mdsname, isofile, sizeof(mdsname)); | |
579 | mdsname[MAXPATHLEN - 1] = '\0'; | |
580 | if (strlen(mdsname) >= 4) { | |
581 | strcpy(mdsname + strlen(mdsname) - 4, ".mds"); | |
582 | } | |
583 | else { | |
584 | return -1; | |
585 | } | |
586 | ||
587 | if ((fi = fopen(mdsname, "rb")) == NULL) { | |
588 | return -1; | |
589 | } | |
590 | ||
591 | memset(&ti, 0, sizeof(ti)); | |
592 | ||
593 | // check if it's a valid mds file | |
594 | fread(&i, 1, sizeof(unsigned int), fi); | |
595 | i = SWAP32(i); | |
596 | if (i != 0x4944454D) { | |
597 | // not an valid mds file | |
598 | fclose(fi); | |
599 | return -1; | |
600 | } | |
601 | ||
602 | // get offset to session block | |
603 | fseek(fi, 0x50, SEEK_SET); | |
604 | fread(&offset, 1, sizeof(unsigned int), fi); | |
605 | offset = SWAP32(offset); | |
606 | ||
607 | // get total number of tracks | |
608 | offset += 14; | |
609 | fseek(fi, offset, SEEK_SET); | |
610 | fread(&s, 1, sizeof(unsigned short), fi); | |
611 | s = SWAP16(s); | |
612 | numtracks = s; | |
613 | ||
614 | // get offset to track blocks | |
615 | fseek(fi, 4, SEEK_CUR); | |
616 | fread(&offset, 1, sizeof(unsigned int), fi); | |
617 | offset = SWAP32(offset); | |
618 | ||
619 | // skip lead-in data | |
620 | while (1) { | |
621 | fseek(fi, offset + 4, SEEK_SET); | |
622 | if (fgetc(fi) < 0xA0) { | |
623 | break; | |
624 | } | |
625 | offset += 0x50; | |
626 | } | |
627 | ||
628 | // check if the image contains mixed subchannel data | |
629 | fseek(fi, offset + 1, SEEK_SET); | |
630 | subChanMixed = (fgetc(fi) ? TRUE : FALSE); | |
631 | ||
632 | // read track data | |
633 | for (i = 1; i <= numtracks; i++) { | |
634 | fseek(fi, offset, SEEK_SET); | |
635 | ||
636 | // get the track type | |
637 | ti[i].type = ((fgetc(fi) == 0xA9) ? CDDA : DATA); | |
638 | fseek(fi, 8, SEEK_CUR); | |
639 | ||
640 | // get the track starting point | |
641 | ti[i].start[0] = fgetc(fi); | |
642 | ti[i].start[1] = fgetc(fi); | |
643 | ti[i].start[2] = fgetc(fi); | |
644 | ||
645 | if (i > 1) { | |
646 | l = msf2sec(ti[i].start); | |
647 | sec2msf(l - 2 * 75, ti[i].start); // ??? | |
648 | } | |
649 | ||
650 | // get the track length | |
651 | fread(&extra_offset, 1, sizeof(unsigned int), fi); | |
652 | extra_offset = SWAP32(extra_offset); | |
653 | ||
654 | fseek(fi, extra_offset + 4, SEEK_SET); | |
655 | fread(&l, 1, sizeof(unsigned int), fi); | |
656 | l = SWAP32(l); | |
657 | sec2msf(l, ti[i].length); | |
658 | ||
659 | offset += 0x50; | |
660 | } | |
661 | ||
662 | fclose(fi); | |
663 | return 0; | |
664 | } | |
665 | ||
666 | // this function tries to get the .sub file of the given .img | |
667 | static int opensubfile(const char *isoname) { | |
668 | char subname[MAXPATHLEN]; | |
669 | ||
670 | // copy name of the iso and change extension from .img to .sub | |
671 | strncpy(subname, isoname, sizeof(subname)); | |
672 | subname[MAXPATHLEN - 1] = '\0'; | |
673 | if (strlen(subname) >= 4) { | |
674 | strcpy(subname + strlen(subname) - 4, ".sub"); | |
675 | } | |
676 | else { | |
677 | return -1; | |
678 | } | |
679 | ||
680 | subHandle = fopen(subname, "rb"); | |
681 | if (subHandle == NULL) { | |
682 | return -1; | |
683 | } | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
ef79bbde P |
688 | static void PrintTracks(void) { |
689 | int i; | |
690 | ||
691 | for (i = 1; i <= numtracks; i++) { | |
692 | SysPrintf(_("Track %.2d (%s) - Start %.2d:%.2d:%.2d, Length %.2d:%.2d:%.2d\n"), | |
693 | i, (ti[i].type == DATA ? "DATA" : "AUDIO"), | |
694 | ti[i].start[0], ti[i].start[1], ti[i].start[2], | |
695 | ti[i].length[0], ti[i].length[1], ti[i].length[2]); | |
696 | } | |
697 | } | |
698 | ||
699 | // This function is invoked by the front-end when opening an ISO | |
700 | // file for playback | |
701 | static long CALLBACK ISOopen(void) { | |
702 | if (cdHandle != NULL) { | |
703 | return 0; // it's already open | |
704 | } | |
705 | ||
706 | cdHandle = fopen(GetIsoFile(), "rb"); | |
707 | if (cdHandle == NULL) { | |
708 | return -1; | |
709 | } | |
710 | ||
711 | SysPrintf(_("Loaded CD Image: %s"), GetIsoFile()); | |
712 | ||
713 | cddaBigEndian = FALSE; | |
714 | subChanMixed = FALSE; | |
715 | subChanRaw = FALSE; | |
716 | ||
717 | if (parsecue(GetIsoFile()) == 0) { | |
718 | SysPrintf("[+cue]"); | |
719 | } | |
720 | else if (parsetoc(GetIsoFile()) == 0) { | |
721 | SysPrintf("[+toc]"); | |
722 | } | |
723 | else if (parseccd(GetIsoFile()) == 0) { | |
724 | SysPrintf("[+ccd]"); | |
725 | } | |
726 | else if (parsemds(GetIsoFile()) == 0) { | |
727 | SysPrintf("[+mds]"); | |
728 | } | |
729 | ||
730 | if (!subChanMixed && opensubfile(GetIsoFile()) == 0) { | |
731 | SysPrintf("[+sub]"); | |
732 | } | |
733 | ||
734 | SysPrintf(".\n"); | |
735 | ||
736 | PrintTracks(); | |
737 | ||
38b8102c | 738 | // make sure we have another handle open for cdda |
739 | if (numtracks > 1 && ti[1].handle == NULL) { | |
740 | ti[1].handle = fopen(GetIsoFile(), "rb"); | |
741 | } | |
742 | ||
ef79bbde P |
743 | return 0; |
744 | } | |
745 | ||
746 | static long CALLBACK ISOclose(void) { | |
38b8102c | 747 | int i; |
748 | ||
ef79bbde P |
749 | if (cdHandle != NULL) { |
750 | fclose(cdHandle); | |
751 | cdHandle = NULL; | |
752 | } | |
753 | if (subHandle != NULL) { | |
754 | fclose(subHandle); | |
755 | subHandle = NULL; | |
756 | } | |
757 | stopCDDA(); | |
38b8102c | 758 | cddaHandle = NULL; |
759 | ||
760 | for (i = 1; i <= numtracks; i++) { | |
761 | if (ti[i].handle != NULL) { | |
762 | fclose(ti[i].handle); | |
763 | ti[i].handle = NULL; | |
764 | } | |
765 | } | |
766 | numtracks = 0; | |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
771 | static long CALLBACK ISOinit(void) { | |
772 | assert(cdHandle == NULL); | |
773 | assert(subHandle == NULL); | |
774 | ||
775 | return 0; // do nothing | |
776 | } | |
777 | ||
778 | static long CALLBACK ISOshutdown(void) { | |
779 | ISOclose(); | |
ef79bbde P |
780 | return 0; |
781 | } | |
782 | ||
783 | // return Starting and Ending Track | |
784 | // buffer: | |
785 | // byte 0 - start track | |
786 | // byte 1 - end track | |
787 | static long CALLBACK ISOgetTN(unsigned char *buffer) { | |
788 | buffer[0] = 1; | |
789 | ||
790 | if (numtracks > 0) { | |
791 | buffer[1] = numtracks; | |
792 | } | |
793 | else { | |
794 | buffer[1] = 1; | |
795 | } | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | // return Track Time | |
801 | // buffer: | |
802 | // byte 0 - frame | |
803 | // byte 1 - second | |
804 | // byte 2 - minute | |
805 | static long CALLBACK ISOgetTD(unsigned char track, unsigned char *buffer) { | |
806 | if (numtracks > 0 && track <= numtracks) { | |
807 | buffer[2] = ti[track].start[0]; | |
808 | buffer[1] = ti[track].start[1]; | |
809 | buffer[0] = ti[track].start[2]; | |
810 | } | |
811 | else { | |
812 | buffer[2] = 0; | |
813 | buffer[1] = 2; | |
814 | buffer[0] = 0; | |
815 | } | |
816 | ||
817 | return 0; | |
818 | } | |
819 | ||
820 | // decode 'raw' subchannel data ripped by cdrdao | |
821 | static void DecodeRawSubData(void) { | |
822 | unsigned char subQData[12]; | |
823 | int i; | |
824 | ||
825 | memset(subQData, 0, sizeof(subQData)); | |
826 | ||
827 | for (i = 0; i < 8 * 12; i++) { | |
828 | if (subbuffer[i] & (1 << 6)) { // only subchannel Q is needed | |
829 | subQData[i >> 3] |= (1 << (7 - (i & 7))); | |
830 | } | |
831 | } | |
832 | ||
833 | memcpy(&subbuffer[12], subQData, 12); | |
834 | } | |
835 | ||
836 | // read track | |
837 | // time: byte 0 - minute; byte 1 - second; byte 2 - frame | |
838 | // uses bcd format | |
839 | static long CALLBACK ISOreadTrack(unsigned char *time) { | |
840 | if (cdHandle == NULL) { | |
841 | return -1; | |
842 | } | |
843 | ||
844 | if (subChanMixed) { | |
845 | fseek(cdHandle, MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])) * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE) + 12, SEEK_SET); | |
846 | fread(cdbuffer, 1, DATA_SIZE, cdHandle); | |
847 | fread(subbuffer, 1, SUB_FRAMESIZE, cdHandle); | |
848 | ||
849 | if (subChanRaw) DecodeRawSubData(); | |
850 | } | |
851 | else { | |
852 | fseek(cdHandle, MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])) * CD_FRAMESIZE_RAW + 12, SEEK_SET); | |
853 | fread(cdbuffer, 1, DATA_SIZE, cdHandle); | |
854 | ||
855 | if (subHandle != NULL) { | |
856 | fseek(subHandle, MSF2SECT(btoi(time[0]), btoi(time[1]), btoi(time[2])) * SUB_FRAMESIZE, SEEK_SET); | |
857 | fread(subbuffer, 1, SUB_FRAMESIZE, subHandle); | |
858 | ||
859 | if (subChanRaw) DecodeRawSubData(); | |
860 | } | |
861 | } | |
862 | ||
863 | return 0; | |
864 | } | |
865 | ||
866 | // return readed track | |
867 | static unsigned char * CALLBACK ISOgetBuffer(void) { | |
868 | return cdbuffer; | |
869 | } | |
870 | ||
871 | // plays cdda audio | |
872 | // sector: byte 0 - minute; byte 1 - second; byte 2 - frame | |
873 | // does NOT uses bcd format | |
874 | static long CALLBACK ISOplay(unsigned char *time) { | |
38b8102c | 875 | unsigned int i, sect; |
876 | ||
7b8da7ab | 877 | if (numtracks <= 1) |
878 | return 0; | |
879 | ||
38b8102c | 880 | // find the track |
881 | sect = msf2sec(time); | |
882 | for (i = numtracks; i > 1; i--) | |
883 | if (msf2sec(ti[i].start) <= sect + 2 * 75) | |
884 | break; | |
885 | ||
886 | // find the file that contains this track | |
887 | for (; i > 1; i--) | |
888 | if (ti[i].handle != NULL) | |
889 | break; | |
890 | ||
891 | cddaStartOffset = msf2sec(ti[i].start); | |
892 | sect -= cddaStartOffset - 2 * 75; | |
893 | cddaHandle = ti[i].handle; | |
894 | ||
ef79bbde P |
895 | if (SPU_playCDDAchannel != NULL) { |
896 | if (subChanMixed) { | |
38b8102c | 897 | startCDDA(sect * (CD_FRAMESIZE_RAW + SUB_FRAMESIZE)); |
ef79bbde P |
898 | } |
899 | else { | |
38b8102c | 900 | startCDDA(sect * CD_FRAMESIZE_RAW); |
ef79bbde P |
901 | } |
902 | } | |
903 | return 0; | |
904 | } | |
905 | ||
906 | // stops cdda audio | |
907 | static long CALLBACK ISOstop(void) { | |
908 | stopCDDA(); | |
909 | return 0; | |
910 | } | |
911 | ||
912 | // gets subchannel data | |
913 | static unsigned char* CALLBACK ISOgetBufferSub(void) { | |
914 | if (subHandle != NULL || subChanMixed) { | |
915 | return subbuffer; | |
916 | } | |
917 | ||
918 | return NULL; | |
919 | } | |
920 | ||
921 | static long CALLBACK ISOgetStatus(struct CdrStat *stat) { | |
922 | int sec; | |
923 | ||
924 | CDR__getStatus(stat); | |
925 | ||
926 | if (playing) { | |
927 | stat->Type = 0x02; | |
928 | stat->Status |= 0x80; | |
38b8102c | 929 | sec = (cddaStartOffset + cddaCurOffset) / CD_FRAMESIZE_RAW; |
ef79bbde P |
930 | sec2msf(sec, (char *)stat->Time); |
931 | } | |
932 | else { | |
933 | stat->Type = 0x01; | |
934 | } | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
939 | void cdrIsoInit(void) { | |
940 | CDR_init = ISOinit; | |
941 | CDR_shutdown = ISOshutdown; | |
942 | CDR_open = ISOopen; | |
943 | CDR_close = ISOclose; | |
944 | CDR_getTN = ISOgetTN; | |
945 | CDR_getTD = ISOgetTD; | |
946 | CDR_readTrack = ISOreadTrack; | |
947 | CDR_getBuffer = ISOgetBuffer; | |
948 | CDR_play = ISOplay; | |
949 | CDR_stop = ISOstop; | |
950 | CDR_getBufferSub = ISOgetBufferSub; | |
951 | CDR_getStatus = ISOgetStatus; | |
952 | ||
953 | CDR_getDriveLetter = CDR__getDriveLetter; | |
954 | CDR_configure = CDR__configure; | |
955 | CDR_test = CDR__test; | |
956 | CDR_about = CDR__about; | |
957 | CDR_setfilename = CDR__setfilename; | |
958 | ||
959 | numtracks = 0; | |
960 | } | |
961 | ||
962 | int cdrIsoActive(void) { | |
963 | return (cdHandle != NULL); | |
964 | } |