main/songs.c

   1 /* $Id: songs.c,v 1.14 2004-08-29 17:57:23 schaffner Exp $ */
   2 /*
   3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   4 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   7 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   9 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
  10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  13 */
  14
  15 /*
  16  *
  17  * Routines to manage the songs in Descent.
  18  *
  19  */
  20
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <conf.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30 #if !defined(_MSC_VER) && !defined(macintosh)
  31 #include <unistd.h>
  32 #endif
  33
  34 #include "inferno.h"
  35 #include "error.h"
  36 #include "pstypes.h"
  37 #include "args.h"
  38 #include "songs.h"
  39 #include "mono.h"
  40 #include "cfile.h"
  41 #include "digi.h"
  42 #include "rbaudio.h"
  43 #include "kconfig.h"
  44 #include "timer.h"
  45
  46 song_info Songs[MAX_NUM_SONGS];
  47 int Songs_initialized = 0;
  48
  49 #ifndef MACINTOSH
  50 int Num_songs;
  51 #endif
  52
  53 extern void digi_stop_current_song();
  54
  55 int Redbook_enabled = 1;
  56
  57 //0 if redbook is no playing, else the track number
  58 int Redbook_playing = 0;
  59
  60 #define NumLevelSongs (Num_songs - SONG_FIRST_LEVEL_SONG)
  61
  62 extern int CD_blast_mixer();
  63
  64 #ifndef MACINTOSH
  65 #define REDBOOK_VOLUME_SCALE  (255/3)           //255 is MAX
  66 #else
  67 #define REDBOOK_VOLUME_SCALE    (255)
  68 #endif
  69
  70 //takes volume in range 0..8
  71 void set_redbook_volume(int volume)
  72 {
  73         #ifndef MACINTOSH
  74         RBASetVolume(0);                // makes the macs sound really funny
  75         #endif
  76         RBASetVolume(volume*REDBOOK_VOLUME_SCALE/8);
  77 }
  78
  79 extern char CDROM_dir[];
  80
  81 void songs_init()
  82 {
  83         int i;
  84         char inputline[80+1];
  85         CFILE * fp;
  86
  87         if ( Songs_initialized ) return;
  88
  89
  90         #if !defined(MACINTOSH) && !defined(WINDOWS)    // don't crank it if on a macintosh!!!!!
  91                 if (!FindArg("-nomixer"))
  92                         CD_blast_mixer();   // Crank it!
  93         #endif
  94
  95
  96         if (cfexist("descent.sng")) {   // mac (demo?) datafiles don't have the .sng file
  97                 fp = cfopen( "descent.sng", "rb" );
  98                 if ( fp == NULL )
  99                 {
 100                         Error( "Couldn't open descent.sng" );
 101                 }
 102                 i = 0;
 103                 while (cfgets(inputline, 80, fp ))
 104                 {
 105                         if ( strlen( inputline ) )
 106                         {
 107                                 Assert( i < MAX_NUM_SONGS );
 108                                 sscanf( inputline, "%s %s %s",
 109                                                 Songs[i].filename,
 110                                                 Songs[i].melodic_bank_file,
 111                                                 Songs[i].drum_bank_file );
 112                                 //printf( "%d. '%s' '%s' '%s'\n",i,Songs[i].filename,Songs[i].melodic_bank_file,Songs[i].drum_bank_file );
 113                                 i++;
 114                         }
 115                 }
 116                 Num_songs = i;
 117                 if (Num_songs <= SONG_FIRST_LEVEL_SONG)
 118                         Error("Must have at least %d songs",SONG_FIRST_LEVEL_SONG+1);
 119                 cfclose(fp);
 120         }
 121
 122         Songs_initialized = 1;
 123
 124         //      RBA Hook
 125         #if !defined(SHAREWARE) || ( defined(SHAREWARE) && defined(APPLE_DEMO) )
 126                 if (FindArg("-noredbook"))
 127                 {
 128                         Redbook_enabled = 0;
 129                 }
 130                 else    // use redbook
 131                 {
 132                         #ifndef __MSDOS__ // defined(WINDOWS) || defined(MACINTOSH)
 133                                 RBAInit();
 134                         #else
 135                                 RBAInit(toupper(CDROM_dir[0]) - 'A');
 136                         #endif
 137
 138                                 if (RBAEnabled())
 139                         {
 140                                 set_redbook_volume(Config_redbook_volume);
 141                                 RBARegisterCD();
 142                         }
 143                 }
 144                 atexit(RBAStop);    // stop song on exit
 145         #endif  // endof ifndef SHAREWARE, ie ifdef SHAREWARE
 146 }
 147
 148 #define FADE_TIME (f1_0/2)
 149
 150 //stop the redbook, so we can read off the CD
 151 void songs_stop_redbook(void)
 152 {
 153         int old_volume = Config_redbook_volume*REDBOOK_VOLUME_SCALE/8;
 154         fix old_time = timer_get_fixed_seconds();
 155
 156         if (Redbook_playing) {          //fade out volume
 157                 int new_volume;
 158                 do {
 159                         fix t = timer_get_fixed_seconds();
 160
 161                         new_volume = fixmuldiv(old_volume,(FADE_TIME - (t-old_time)),FADE_TIME);
 162
 163                         if (new_volume < 0)
 164                                 new_volume = 0;
 165
 166                         RBASetVolume(new_volume);
 167
 168                 } while (new_volume > 0);
 169         }
 170
 171         RBAStop();                      // Stop CD, if playing
 172
 173         RBASetVolume(old_volume);       //restore volume
 174
 175         Redbook_playing = 0;
 176
 177 }
 178
 179 //stop any songs - midi or redbook - that are currently playing
 180 void songs_stop_all(void)
 181 {
 182         digi_stop_current_song();       // Stop midi song, if playing
 183
 184         songs_stop_redbook();                   // Stop CD, if playing
 185 }
 186
 187 int force_rb_register=0;
 188
 189 void reinit_redbook()
 190 {
 191         #ifndef __MSDOS__ // defined(WINDOWS) || defined(MACINTOSH)
 192                 RBAInit();
 193         #else
 194                 RBAInit(toupper(CDROM_dir[0]) - 'A');
 195         #endif
 196
 197         if (RBAEnabled())
 198         {
 199                 set_redbook_volume(Config_redbook_volume);
 200                 RBARegisterCD();
 201                 force_rb_register=0;
 202         }
 203 }
 204
 205
 206 //returns 1 if track started sucessfully
 207 //start at tracknum.  if keep_playing set, play to end of disc.  else
 208 //play only specified track
 209 int play_redbook_track(int tracknum,int keep_playing)
 210 {
 211         Redbook_playing = 0;
 212
 213         if (!RBAEnabled() && Redbook_enabled && !FindArg("-noredbook"))
 214                 reinit_redbook();
 215
 216         if (force_rb_register) {
 217                 RBARegisterCD();                        //get new track list for new CD
 218                 force_rb_register = 0;
 219         }
 220
 221         if (Redbook_enabled && RBAEnabled()) {
 222                 int num_tracks = RBAGetNumberOfTracks();
 223                 if (tracknum <= num_tracks)
 224                         if (RBAPlayTracks(tracknum,keep_playing?num_tracks:tracknum))  {
 225                                 Redbook_playing = tracknum;
 226                         }
 227         }
 228
 229         return (Redbook_playing != 0);
 230 }
 231
 232 /*
 233  * Some of these have different Track listings!
 234  * Which one is the "correct" order?
 235  */
 236 #define D2_1_DISCID         0x7d0ff809 // Descent II
 237 #define D2_2_DISCID         0xe010a30e // Descent II
 238 #define D2_3_DISCID         0xd410070d // Descent II
 239 #define D2_4_DISCID         0xc610080d // Descent II
 240 #define D2_DEF_DISCID       0x87102209 // Definitive collection Disc 2
 241 #define D2_OEM_DISCID       0xac0bc30d // Destination: Quartzon
 242 #define D2_OEM2_DISCID      0xc40c0a0d // Destination: Quartzon
 243 #define D2_VERTIGO_DISCID   0x53078208 // Vertigo
 244 #define D2_VERTIGO2_DISCID  0x64071408 // Vertigo + DMB
 245 #define D2_MAC_DISCID       0xb70ee40e // Macintosh
 246 #define D2_IPLAY_DISCID     0x22115710 // iPlay for Macintosh
 247
 248 #define REDBOOK_TITLE_TRACK         2
 249 #define REDBOOK_CREDITS_TRACK       3
 250 #define REDBOOK_FIRST_LEVEL_TRACK   (songs_haved2_cd()?4:1)
 251
 252 // songs_haved2_cd returns 1 if the descent 2 CD is in the drive and
 253 // 0 otherwise
 254
 255 #if 1
 256 int songs_haved2_cd()
 257 {
 258         int discid;
 259
 260         if (!Redbook_enabled)
 261                 return 0;
 262
 263         discid = RBAGetDiscID();
 264
 265         switch (discid) {
 266         case D2_1_DISCID:
 267         case D2_2_DISCID:
 268         case D2_3_DISCID:
 269         case D2_4_DISCID:
 270         case D2_DEF_DISCID:
 271         case D2_OEM_DISCID:
 272         case D2_OEM2_DISCID:
 273         case D2_VERTIGO_DISCID:
 274         case D2_VERTIGO2_DISCID:
 275         case D2_MAC_DISCID:
 276         case D2_IPLAY_DISCID:
 277                 printf("Found D2 CD! discid: %x\n", discid);
 278                 return 1;
 279         default:
 280                 printf("Unknown CD! discid: %x\n", discid);
 281                 return 0;
 282         }
 283 }
 284 #else
 285 int songs_haved2_cd()
 286 {
 287         char temp[128],cwd[128];
 288
 289         getcwd(cwd, 128);
 290
 291         strcpy(temp,CDROM_dir);
 292
 293         #ifndef MACINTOSH               //for PC, strip of trailing slash
 294         if (temp[strlen(temp)-1] == '\\')
 295                 temp[strlen(temp)-1] = 0;
 296         #endif
 297
 298         if ( !chdir(temp) ) {
 299                 chdir(cwd);
 300                 return 1;
 301         }
 302
 303         return 0;
 304 }
 305 #endif
 306
 307
 308 void songs_play_song( int songnum, int repeat )
 309 {
 310         #ifndef SHAREWARE
 311         //Assert(songnum != SONG_ENDLEVEL && songnum != SONG_ENDGAME);  //not in full version
 312         #endif
 313
 314         if ( !Songs_initialized )
 315                 songs_init();
 316
 317         //stop any music already playing
 318
 319         songs_stop_all();
 320
 321         //do we want any of these to be redbook songs?
 322
 323         if (force_rb_register) {
 324                 RBARegisterCD();                        //get new track list for new CD
 325                 force_rb_register = 0;
 326         }
 327
 328         if (songnum == SONG_TITLE)
 329                 play_redbook_track(REDBOOK_TITLE_TRACK,0);
 330         else if (songnum == SONG_CREDITS)
 331                 play_redbook_track(REDBOOK_CREDITS_TRACK,0);
 332
 333         if (!Redbook_playing) {         //not playing redbook, so play midi
 334
 335                 #ifndef MACINTOSH
 336                         digi_play_midi_song( Songs[songnum].filename, Songs[songnum].melodic_bank_file, Songs[songnum].drum_bank_file, repeat );
 337                 #else
 338                         digi_play_midi_song(songnum, repeat);
 339                 #endif
 340         }
 341 }
 342
 343 int current_song_level;
 344
 345 void songs_play_level_song( int levelnum )
 346 {
 347         int songnum;
 348         int n_tracks;
 349
 350         Assert( levelnum != 0 );
 351
 352         if ( !Songs_initialized )
 353                 songs_init();
 354
 355         songs_stop_all();
 356
 357         current_song_level = levelnum;
 358
 359         songnum = (levelnum>0)?(levelnum-1):(-levelnum);
 360
 361         if (!RBAEnabled() && Redbook_enabled && !FindArg("-noredbook"))
 362                 reinit_redbook();
 363
 364         if (force_rb_register) {
 365                 RBARegisterCD();                        //get new track list for new CD
 366                 force_rb_register = 0;
 367         }
 368
 369         if (Redbook_enabled && RBAEnabled() && (n_tracks = RBAGetNumberOfTracks()) > 1) {
 370
 371                 //try to play redbook
 372
 373                 mprintf((0,"n_tracks = %d\n",n_tracks));
 374
 375                 play_redbook_track(REDBOOK_FIRST_LEVEL_TRACK + (songnum % (n_tracks-REDBOOK_FIRST_LEVEL_TRACK+1)),1);
 376         }
 377
 378         if (! Redbook_playing) {                        //not playing redbook, so play midi
 379
 380                 songnum = SONG_FIRST_LEVEL_SONG + (songnum % NumLevelSongs);
 381
 382                 #ifndef MACINTOSH
 383                         digi_play_midi_song( Songs[songnum].filename, Songs[songnum].melodic_bank_file, Songs[songnum].drum_bank_file, 1 );
 384                 #else
 385                         digi_play_midi_song( songnum, 1 );
 386                 #endif
 387
 388         }
 389 }
 390
 391 //this should be called regularly to check for redbook restart
 392 void songs_check_redbook_repeat()
 393 {
 394         static fix last_check_time;
 395         fix current_time;
 396
 397         if (!Redbook_playing || Config_redbook_volume==0) return;
 398
 399         current_time = timer_get_fixed_seconds();
 400         if (current_time < last_check_time || (current_time - last_check_time) >= F2_0) {
 401                 if (!RBAPeekPlayStatus()) {
 402                         stop_time();
 403                         // if title ends, start credit music
 404                         // if credits music ends, restart it
 405                         if (Redbook_playing == REDBOOK_TITLE_TRACK || Redbook_playing == REDBOOK_CREDITS_TRACK)
 406                                 play_redbook_track(REDBOOK_CREDITS_TRACK,0);
 407                         else {
 408                                 //songs_goto_next_song();
 409
 410                                 //new code plays all tracks to end of disk, so if disk has
 411                                 //stopped we must be at end.  So start again with level 1 song.
 412
 413                                 songs_play_level_song(1);
 414                         }
 415                         start_time();
 416                 }
 417                 last_check_time = current_time;
 418         }
 419 }
 420
 421 //goto the next level song
 422 void songs_goto_next_song()
 423 {
 424         if (Redbook_playing)            //get correct track
 425                 current_song_level = RBAGetTrackNum() - REDBOOK_FIRST_LEVEL_TRACK + 1;
 426
 427         songs_play_level_song(current_song_level+1);
 428
 429 }
 430
 431 //goto the previous level song
 432 void songs_goto_prev_song()
 433 {
 434         if (Redbook_playing)            //get correct track
 435                 current_song_level = RBAGetTrackNum() - REDBOOK_FIRST_LEVEL_TRACK + 1;
 436
 437         if (current_song_level > 1)
 438                 songs_play_level_song(current_song_level-1);
 439
 440 }
 441