arch/dos/digi.c

   1 // SDL digital audio support
   2
   3 #include <conf.h>
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <string.h>
   7
   8 #include "pstypes.h"
   9 #include "error.h"
  10 #include "mono.h"
  11 #include "fix.h"
  12 #include "vecmat.h"
  13 #include "gr.h" // needed for piggy.h
  14 #include "piggy.h"
  15 #include "digi.h"
  16 #include "sounds.h"
  17 #include "wall.h"
  18 #include "newdemo.h"
  19 #include "kconfig.h"
  20
  21 int digi_sample_rate=11025;
  22 int digi_timer_rate                                     = 9943;                 // rate for the timer to go off to handle the driver system (120 Hz)
  23
  24 //edited 05/17/99 Matt Mueller - added ifndef NO_ASM
  25 //added on 980905 by adb to add inline fixmul for mixer on i386
  26 #ifndef NO_ASM
  27 #ifdef __i386__
  28 #define do_fixmul(x,y)                          \
  29 ({                                              \
  30         int _ax, _dx;                           \
  31         asm("imull %2\n\tshrdl %3,%1,%0"        \
  32             : "=a"(_ax), "=d"(_dx)              \
  33             : "rm"(y), "i"(16), "0"(x));        \
  34         _ax;                                    \
  35 })
  36 extern inline fix fixmul(fix x, fix y) { return do_fixmul(x,y); }
  37 #endif
  38 #endif
  39 //end edit by adb
  40 //end edit -MM
  41
  42 //changed on 980905 by adb to increase number of concurrent sounds
  43 #define MAX_SOUND_SLOTS 32
  44 //end changes by adb
  45 #define SOUND_BUFFER_SIZE 512
  46
  47 #define MIN_VOLUME 10
  48
  49 /* This table is used to add two sound values together and pin
  50  * the value to avoid overflow.  (used with permission from ARDI)
  51  * DPH: Taken from SDL/src/SDL_mixer.c.
  52  */
  53 static const unsigned char mix8[] =
  54 {
  55   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  56   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  57   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  58   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  59   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  60   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  61   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  62   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  63   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  64   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  65   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  66   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
  67   0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
  68   0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
  69   0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24,
  70   0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
  71   0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
  72   0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45,
  73   0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
  74   0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B,
  75   0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
  76   0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71,
  77   0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C,
  78   0x7D, 0x7E, 0x7F, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
  79   0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92,
  80   0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D,
  81   0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
  82   0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3,
  83   0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE,
  84   0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9,
  85   0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4,
  86   0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
  87   0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA,
  88   0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5,
  89   0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0xFF,
  90   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  91   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  92   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  93   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  94   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  95   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  96   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  97   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  98   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
  99   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 100   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 101   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 102 };
 103
 104 #define SOF_USED                        1               // Set if this sample is used
 105 #define SOF_PLAYING                     2               // Set if this sample is playing on a channel
 106 #define SOF_LINK_TO_OBJ         4               // Sound is linked to a moving object. If object dies, then finishes play and quits.
 107 #define SOF_LINK_TO_POS         8               // Sound is linked to segment, pos
 108 #define SOF_PLAY_FOREVER        16              // Play forever (or until level is stopped), otherwise plays once
 109
 110 typedef struct sound_object {
 111         short           signature;              // A unique signature to this sound
 112         ubyte           flags;                  // Used to tell if this slot is used and/or currently playing, and how long.
 113         fix             max_volume;             // Max volume that this sound is playing at
 114         fix             max_distance;           // The max distance that this sound can be heard at...
 115         int             volume;                 // Volume that this sound is playing at
 116         int             pan;                    // Pan value that this sound is playing at
 117         int             handle;                 // What handle this sound is playing on.  Valid only if SOF_PLAYING is set.
 118         short           soundnum;               // The sound number that is playing
 119         union {
 120                 struct {
 121                         short           segnum;                         // Used if SOF_LINK_TO_POS field is used
 122                         short           sidenum;
 123                         vms_vector      position;
 124                 }pos;
 125                 struct {
 126                         short            objnum;                         // Used if SOF_LINK_TO_OBJ field is used
 127                         short            objsignature;
 128                 }obj;
 129         }link;
 130 } sound_object;
 131 #define lp_segnum link.pos.segnum
 132 #define lp_sidenum link.pos.sidenum
 133 #define lp_position link.pos.position
 134
 135 #define lo_objnum link.obj.objnum
 136 #define lo_objsignature link.obj.objsignature
 137
 138 #define MAX_SOUND_OBJECTS 16
 139 sound_object SoundObjects[MAX_SOUND_OBJECTS];
 140 short next_signature=0;
 141
 142 //added/changed on 980905 by adb to make sfx volume work, on 990221 by adb changed F1_0 to F1_0 / 2
 143 #define SOUND_MAX_VOLUME (F1_0 / 2)
 144
 145 int digi_volume = SOUND_MAX_VOLUME;
 146 //end edit by adb
 147
 148 int digi_lomem = 0;
 149
 150 static int digi_initialised = 0;
 151
 152 struct sound_slot {
 153  int soundno;
 154  int playing;   // Is there a sample playing on this channel?
 155  int looped;    // Play this sample looped?
 156  fix pan;       // 0 = far left, 1 = far right
 157  fix volume;    // 0 = nothing, 1 = fully on
 158  //changed on 980905 by adb from char * to unsigned char *
 159  unsigned char *samples;
 160  //end changes by adb
 161  unsigned int length; // Length of the sample
 162  unsigned int position; // Position we are at at the moment.
 163 } SoundSlots[MAX_SOUND_SLOTS];
 164
 165 static int digi_sounds_initialized = 0;
 166
 167 //added on 980905 by adb to add rotating/volume based sound kill system
 168 static int digi_max_channels = 16;
 169 static int next_handle = 0;
 170 int SampleHandles[32];
 171 void reset_sounds_on_channel(int channel);
 172 //end edit by adb
 173
 174 void digi_reset_digi_sounds(void);
 175
 176 /* Audio mixing callback */
 177 //changed on 980905 by adb to cleanup, add pan support and optimize mixer
 178 static void audio_mixcallback(void *userdata, unsigned char *stream, int len)
 179 {
 180  unsigned char *streamend = stream + len;
 181  struct sound_slot *sl;
 182
 183  for (sl = SoundSlots; sl < SoundSlots + MAX_SOUND_SLOTS; sl++)
 184  {
 185   if (sl->playing)
 186   {
 187    unsigned char *sldata = sl->samples + sl->position, *slend = sl->samples + sl->length;
 188    unsigned char *sp = stream;
 189    signed char v;
 190    fix vl, vr;
 191    int x;
 192
 193    if ((x = sl->pan) & 0x8000)
 194    {
 195     vl = 0x20000 - x * 2;
 196     vr = 0x10000;
 197    }
 198    else
 199    {
 200     vl = 0x10000;
 201     vr = x * 2;
 202    }
 203    vl = fixmul(vl, (x = sl->volume));
 204    vr = fixmul(vr, x);
 205    while (sp < streamend)
 206    {
 207     if (sldata == slend)
 208     {
 209      if (!sl->looped)
 210      {
 211       sl->playing = 0;
 212       break;
 213      }
 214      sldata = sl->samples;
 215     }
 216     v = *(sldata++) - 0x80;
 217     *(sp++) = mix8[ *sp + fixmul(v, vl) + 0x80 ];
 218     *(sp++) = mix8[ *sp + fixmul(v, vr) + 0x80 ];
 219    }
 220    sl->position = sldata - sl->samples;
 221   }
 222  }
 223 }
 224 //end changes by adb
 225
 226 /* Initialise audio devices. */
 227 int digi_init()
 228 {
 229
 230  return 1;
 231 }
 232
 233 /* Toggle audio */
 234 void digi_reset() { }
 235
 236 /* Shut down audio */
 237 void digi_close()
 238 {
 239  if (!digi_initialised) return;
 240  digi_initialised = 0;
 241 }
 242
 243 /* Find the sound which actually equates to a sound number */
 244 int digi_xlat_sound(int soundno)
 245 {
 246         if ( soundno < 0 ) return -1;
 247
 248         if ( digi_lomem )       {
 249                 soundno = AltSounds[soundno];
 250                 if ( soundno == 255 ) return -1;
 251         }
 252         return Sounds[soundno];
 253 }
 254
 255 static int get_free_slot()
 256 {
 257  int i;
 258  for (i=0; i<MAX_SOUND_SLOTS; i++)
 259  {
 260   if (!SoundSlots[i].playing) return i;
 261  }
 262  return -1;
 263 }
 264
 265 int digi_start_sound(int soundnum, fix volume, fix pan, int unknown1, int unknown2, int unknown3, int unknown4)
 266 {
 267  int ntries;
 268  int slot;
 269
 270  if (!digi_initialised) return -1;
 271
 272  //added on 980905 by adb from original source to add sound kill system
 273  // play at most digi_max_channel samples, if possible kill sample with low volume
 274  ntries = 0;
 275
 276 TryNextChannel:
 277  if ( (SampleHandles[next_handle] >= 0) && (SoundSlots[SampleHandles[next_handle]].playing)  )
 278  {
 279   if ( (SoundSlots[SampleHandles[next_handle]].volume > digi_volume) && (ntries<digi_max_channels) )
 280   {
 281    //mprintf(( 0, "Not stopping loud sound %d.\n", next_handle ));
 282    next_handle++;
 283    if ( next_handle >= digi_max_channels )
 284     next_handle = 0;
 285    ntries++;
 286    goto TryNextChannel;
 287   }
 288   //mprintf(( 0, "[SS:%d]", next_handle ));
 289   SoundSlots[SampleHandles[next_handle]].playing = 0;
 290   SampleHandles[next_handle] = -1;
 291  }
 292  //end edit by adb
 293
 294  slot = get_free_slot();
 295  if (slot<0) return -1;
 296
 297  SoundSlots[slot].soundno = soundnum;
 298  SoundSlots[slot].samples = GameSounds[soundnum].data;
 299  SoundSlots[slot].length = GameSounds[soundnum].length;
 300  SoundSlots[slot].volume = fixmul(digi_volume, volume);
 301  SoundSlots[slot].pan = pan;
 302  SoundSlots[slot].position = 0;
 303  SoundSlots[slot].looped = 0;
 304  SoundSlots[slot].playing = 1;
 305
 306  //added on 980905 by adb to add sound kill system from original sos digi.c
 307  reset_sounds_on_channel(slot);
 308  SampleHandles[next_handle] = slot;
 309  next_handle++;
 310  if ( next_handle >= digi_max_channels )
 311   next_handle = 0;
 312  //end edit by adb
 313
 314  return slot;
 315 }
 316
 317  //added on 980905 by adb to add sound kill system from original sos digi.c
 318 void reset_sounds_on_channel( int channel )
 319 {
 320  int i;
 321
 322  for (i=0; i<digi_max_channels; i++)
 323   if (SampleHandles[i] == channel)
 324    SampleHandles[i] = -1;
 325 }
 326 //end edit by adb
 327
 328 int digi_start_sound_object(int obj)
 329 {
 330  int slot;
 331
 332  if (!digi_initialised) return -1;
 333  slot = get_free_slot();
 334
 335  if (slot<0) return -1;
 336
 337
 338  SoundSlots[slot].soundno = SoundObjects[obj].soundnum;
 339  SoundSlots[slot].samples = GameSounds[SoundObjects[obj].soundnum].data;
 340  SoundSlots[slot].length = GameSounds[SoundObjects[obj].soundnum].length;
 341  SoundSlots[slot].volume = fixmul(digi_volume, SoundObjects[obj].volume);
 342  SoundSlots[slot].pan = SoundObjects[obj].pan;
 343  SoundSlots[slot].position = 0;
 344  SoundSlots[slot].looped = (SoundObjects[obj].flags & SOF_PLAY_FOREVER);
 345  SoundSlots[slot].playing = 1;
 346
 347  SoundObjects[obj].signature = next_signature++;
 348  SoundObjects[obj].handle = slot;
 349
 350  SoundObjects[obj].flags |= SOF_PLAYING;
 351  //added on 980905 by adb to add sound kill system from original sos digi.c
 352  reset_sounds_on_channel(slot);
 353  //end edit by adb
 354
 355  return 0;
 356 }
 357
 358
 359 // Play the given sound number.
 360 // Volume is max at F1_0.
 361 void digi_play_sample( int soundno, fix max_volume )
 362 {
 363 #ifdef NEWDEMO
 364         if ( Newdemo_state == ND_STATE_RECORDING )
 365                 newdemo_record_sound( soundno );
 366 #endif
 367         soundno = digi_xlat_sound(soundno);
 368
 369         if (!digi_initialised) return;
 370
 371         if (soundno < 0 ) return;
 372
 373         digi_start_sound(soundno, max_volume, F0_5, 0, 0, 0, 0);
 374 }
 375
 376 // Play the given sound number. If the sound is already playing,
 377 // restart it.
 378 void digi_play_sample_once( int soundno, fix max_volume )
 379 {
 380         int i;
 381
 382 #ifdef NEWDEMO
 383         if ( Newdemo_state == ND_STATE_RECORDING )
 384                 newdemo_record_sound( soundno );
 385 #endif
 386         soundno = digi_xlat_sound(soundno);
 387
 388         if (!digi_initialised) return;
 389
 390         if (soundno < 0 ) return;
 391
 392         for (i=0; i < MAX_SOUND_SLOTS; i++)
 393           if (SoundSlots[i].soundno == soundno)
 394             SoundSlots[i].playing = 0;
 395         digi_start_sound(soundno, max_volume, F0_5, 0, 0, 0, 0);
 396
 397 }
 398
 399 void digi_play_sample_3d( int soundno, int angle, int volume, int no_dups ) // Volume from 0-0x7fff
 400 {
 401         no_dups = 1;
 402
 403 #ifdef NEWDEMO
 404         if ( Newdemo_state == ND_STATE_RECORDING )              {
 405                 if ( no_dups )
 406                         newdemo_record_sound_3d_once( soundno, angle, volume );
 407                 else
 408                         newdemo_record_sound_3d( soundno, angle, volume );
 409         }
 410 #endif
 411         soundno = digi_xlat_sound(soundno);
 412
 413         if (!digi_initialised) return;
 414         if (soundno < 0 ) return;
 415
 416         if (volume < MIN_VOLUME ) return;
 417         digi_start_sound(soundno, volume, angle, 0, 0, 0, 0);
 418 }
 419
 420 void digi_get_sound_loc( vms_matrix * listener, vms_vector * listener_pos, int listener_seg, vms_vector * sound_pos, int sound_seg, fix max_volume, int *volume, int *pan, fix max_distance )
 421 {
 422         vms_vector      vector_to_sound;
 423         fix angle_from_ear, cosang,sinang;
 424         fix distance;
 425         fix path_distance;
 426
 427         *volume = 0;
 428         *pan = 0;
 429
 430         max_distance = (max_distance*5)/4;              // Make all sounds travel 1.25 times as far.
 431
 432         //      Warning: Made the vm_vec_normalized_dir be vm_vec_normalized_dir_quick and got illegal values to acos in the fang computation.
 433         distance = vm_vec_normalized_dir_quick( &vector_to_sound, sound_pos, listener_pos );
 434
 435         if (distance < max_distance )   {
 436                 int num_search_segs = f2i(max_distance/20);
 437                 if ( num_search_segs < 1 ) num_search_segs = 1;
 438
 439                 path_distance = find_connected_distance(listener_pos, listener_seg, sound_pos, sound_seg, num_search_segs, WID_RENDPAST_FLAG );
 440                 if ( path_distance > -1 )       {
 441                         *volume = max_volume - fixdiv(path_distance,max_distance);
 442                         //mprintf( (0, "Sound path distance %.2f, volume is %d / %d\n", f2fl(distance), *volume, max_volume ));
 443                         if (*volume > 0 )       {
 444                                 angle_from_ear = vm_vec_delta_ang_norm(&listener->rvec,&vector_to_sound,&listener->uvec);
 445                                 fix_sincos(angle_from_ear,&sinang,&cosang);
 446                                 //mprintf( (0, "volume is %.2f\n", f2fl(*volume) ));
 447                                 if (Config_channels_reversed) cosang *= -1;
 448                                 *pan = (cosang + F1_0)/2;
 449                         } else {
 450                                 *volume = 0;
 451                         }
 452                 }
 453         }
 454 }
 455
 456 int digi_link_sound_to_object2( int org_soundnum, short objnum, int forever, fix max_volume, fix  max_distance )
 457 {
 458         int i,volume,pan;
 459         object * objp;
 460         int soundnum;
 461
 462         soundnum = digi_xlat_sound(org_soundnum);
 463
 464         if ( max_volume < 0 ) return -1;
 465 //      if ( max_volume > F1_0 ) max_volume = F1_0;
 466
 467         if (!digi_initialised) return -1;
 468         if (soundnum < 0 ) return -1;
 469         if (GameSounds[soundnum].data==NULL) {
 470                 Int3();
 471                 return -1;
 472         }
 473         if ((objnum<0)||(objnum>Highest_object_index))
 474                 return -1;
 475
 476         if ( !forever ) {
 477                 // Hack to keep sounds from building up...
 478                 digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, &Objects[objnum].pos, Objects[objnum].segnum, max_volume,&volume, &pan, max_distance );
 479                 digi_play_sample_3d( org_soundnum, pan, volume, 0 );
 480                 return -1;
 481         }
 482
 483         for (i=0; i<MAX_SOUND_OBJECTS; i++ )
 484                 if (SoundObjects[i].flags==0)
 485                    break;
 486
 487         if (i==MAX_SOUND_OBJECTS) {
 488                 mprintf((1, "Too many sound objects!\n" ));
 489                 return -1;
 490         }
 491
 492         SoundObjects[i].signature=next_signature++;
 493         SoundObjects[i].flags = SOF_USED | SOF_LINK_TO_OBJ;
 494         if ( forever )
 495                 SoundObjects[i].flags |= SOF_PLAY_FOREVER;
 496         SoundObjects[i].lo_objnum = objnum;
 497         SoundObjects[i].lo_objsignature = Objects[objnum].signature;
 498         SoundObjects[i].max_volume = max_volume;
 499         SoundObjects[i].max_distance = max_distance;
 500         SoundObjects[i].volume = 0;
 501         SoundObjects[i].pan = 0;
 502         SoundObjects[i].soundnum = soundnum;
 503
 504         objp = &Objects[SoundObjects[i].lo_objnum];
 505         digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum,
 506                        &objp->pos, objp->segnum, SoundObjects[i].max_volume,
 507                        &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );
 508
 509         if (!forever || SoundObjects[i].volume >= MIN_VOLUME)
 510                digi_start_sound_object(i);
 511
 512         return SoundObjects[i].signature;
 513 }
 514
 515 int digi_link_sound_to_object( int soundnum, short objnum, int forever, fix max_volume )
 516 { return digi_link_sound_to_object2( soundnum, objnum, forever, max_volume, 256*F1_0); }
 517
 518 int digi_link_sound_to_pos2( int org_soundnum, short segnum, short sidenum, vms_vector * pos, int forever, fix max_volume, fix max_distance )
 519 {
 520         int i, volume, pan;
 521         int soundnum;
 522
 523         soundnum = digi_xlat_sound(org_soundnum);
 524
 525         if ( max_volume < 0 ) return -1;
 526 //      if ( max_volume > F1_0 ) max_volume = F1_0;
 527
 528         if (!digi_initialised) return -1;
 529         if (soundnum < 0 ) return -1;
 530         if (GameSounds[soundnum].data==NULL) {
 531                 Int3();
 532                 return -1;
 533         }
 534
 535         if ((segnum<0)||(segnum>Highest_segment_index))
 536                 return -1;
 537
 538         if ( !forever ) {
 539                 // Hack to keep sounds from building up...
 540                 digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum, pos, segnum, max_volume, &volume, &pan, max_distance );
 541                 digi_play_sample_3d( org_soundnum, pan, volume, 0 );
 542                 return -1;
 543         }
 544
 545         for (i=0; i<MAX_SOUND_OBJECTS; i++ )
 546                 if (SoundObjects[i].flags==0)
 547                         break;
 548
 549         if (i==MAX_SOUND_OBJECTS) {
 550                 mprintf((1, "Too many sound objects!\n" ));
 551                 return -1;
 552         }
 553
 554
 555         SoundObjects[i].signature=next_signature++;
 556         SoundObjects[i].flags = SOF_USED | SOF_LINK_TO_POS;
 557         if ( forever )
 558                 SoundObjects[i].flags |= SOF_PLAY_FOREVER;
 559         SoundObjects[i].lp_segnum = segnum;
 560         SoundObjects[i].lp_sidenum = sidenum;
 561         SoundObjects[i].lp_position = *pos;
 562         SoundObjects[i].soundnum = soundnum;
 563         SoundObjects[i].max_volume = max_volume;
 564         SoundObjects[i].max_distance = max_distance;
 565         SoundObjects[i].volume = 0;
 566         SoundObjects[i].pan = 0;
 567         digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum,
 568                                            &SoundObjects[i].lp_position, SoundObjects[i].lp_segnum,
 569                                            SoundObjects[i].max_volume,
 570                        &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );
 571
 572         if (!forever || SoundObjects[i].volume >= MIN_VOLUME)
 573                 digi_start_sound_object(i);
 574
 575         return SoundObjects[i].signature;
 576 }
 577
 578 int digi_link_sound_to_pos( int soundnum, short segnum, short sidenum, vms_vector * pos, int forever, fix max_volume )
 579 {
 580         return digi_link_sound_to_pos2( soundnum, segnum, sidenum, pos, forever, max_volume, F1_0 * 256 );
 581 }
 582
 583 void digi_kill_sound_linked_to_segment( int segnum, int sidenum, int soundnum )
 584 {
 585         int i,killed;
 586
 587         soundnum = digi_xlat_sound(soundnum);
 588
 589         if (!digi_initialised) return;
 590
 591         killed = 0;
 592
 593         for (i=0; i<MAX_SOUND_OBJECTS; i++ )    {
 594                 if ( (SoundObjects[i].flags & SOF_USED) && (SoundObjects[i].flags & SOF_LINK_TO_POS) )  {
 595                         if ((SoundObjects[i].lp_segnum == segnum) && (SoundObjects[i].soundnum==soundnum ) && (SoundObjects[i].lp_sidenum==sidenum) ) {
 596                                 if ( SoundObjects[i].flags & SOF_PLAYING )      {
 597                                         SoundSlots[SoundObjects[i].handle].playing = 0;
 598                                 }
 599                                 SoundObjects[i].flags = 0;      // Mark as dead, so some other sound can use this sound
 600                                 killed++;
 601                         }
 602                 }
 603         }
 604         // If this assert happens, it means that there were 2 sounds
 605         // that got deleted. Weird, get John.
 606         if ( killed > 1 )       {
 607                 mprintf( (1, "ERROR: More than 1 sounds were deleted from seg %d\n", segnum ));
 608         }
 609 }
 610
 611 void digi_kill_sound_linked_to_object( int objnum )
 612 {
 613         int i,killed;
 614
 615         if (!digi_initialised) return;
 616
 617         killed = 0;
 618
 619         for (i=0; i<MAX_SOUND_OBJECTS; i++ )    {
 620                 if ( (SoundObjects[i].flags & SOF_USED) && (SoundObjects[i].flags & SOF_LINK_TO_OBJ ) ) {
 621                         if (SoundObjects[i].lo_objnum == objnum)   {
 622                                 if ( SoundObjects[i].flags & SOF_PLAYING )      {
 623                                      SoundSlots[SoundObjects[i].handle].playing = 0;
 624                                 }
 625                                 SoundObjects[i].flags = 0;      // Mark as dead, so some other sound can use this sound
 626                                 killed++;
 627                         }
 628                 }
 629         }
 630         // If this assert happens, it means that there were 2 sounds
 631         // that got deleted. Weird, get John.
 632         if ( killed > 1 )       {
 633                 mprintf( (1, "ERROR: More than 1 sounds were deleted from object %d\n", objnum ));
 634         }
 635 }
 636
 637 void digi_sync_sounds()
 638 {
 639         int i;
 640         int oldvolume, oldpan;
 641
 642         if (!digi_initialised) return;
 643
 644         for (i=0; i<MAX_SOUND_OBJECTS; i++ )    {
 645                 if ( SoundObjects[i].flags & SOF_USED ) {
 646                         oldvolume = SoundObjects[i].volume;
 647                         oldpan = SoundObjects[i].pan;
 648
 649                         if ( !(SoundObjects[i].flags & SOF_PLAY_FOREVER) )      {
 650                                 // Check if its done.
 651                                 if (SoundObjects[i].flags & SOF_PLAYING) {
 652                                         if (!SoundSlots[SoundObjects[i].handle].playing) {
 653                                                 SoundObjects[i].flags = 0;      // Mark as dead, so some other sound can use this sound
 654                                                 continue;               // Go on to next sound...
 655                                         }
 656                                 }
 657                         }
 658
 659                         if ( SoundObjects[i].flags & SOF_LINK_TO_POS )  {
 660                                 digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum,
 661                                                                 &SoundObjects[i].lp_position, SoundObjects[i].lp_segnum,
 662                                                                 SoundObjects[i].max_volume,
 663                                 &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );
 664
 665                         } else if ( SoundObjects[i].flags & SOF_LINK_TO_OBJ )   {
 666                                 object * objp;
 667
 668                                 objp = &Objects[SoundObjects[i].lo_objnum];
 669
 670                                 if ((objp->type==OBJ_NONE) || (objp->signature!=SoundObjects[i].lo_objsignature))  {
 671                                         // The object that this is linked to is dead, so just end this sound if it is looping.
 672                                         if ( (SoundObjects[i].flags & SOF_PLAYING)  && (SoundObjects[i].flags & SOF_PLAY_FOREVER))      {
 673                                              SoundSlots[SoundObjects[i].handle].playing = 0;
 674                                         }
 675                                         SoundObjects[i].flags = 0;      // Mark as dead, so some other sound can use this sound
 676                                         continue;               // Go on to next sound...
 677                                 } else {
 678                                         digi_get_sound_loc( &Viewer->orient, &Viewer->pos, Viewer->segnum,
 679                                         &objp->pos, objp->segnum, SoundObjects[i].max_volume,
 680                                    &SoundObjects[i].volume, &SoundObjects[i].pan, SoundObjects[i].max_distance );
 681                                 }
 682                         }
 683
 684                         if (oldvolume != SoundObjects[i].volume)        {
 685                                 if ( SoundObjects[i].volume < MIN_VOLUME )       {
 686                                         // Sound is too far away, so stop it from playing.
 687                                         if ((SoundObjects[i].flags & SOF_PLAYING)&&(SoundObjects[i].flags & SOF_PLAY_FOREVER))  {
 688                                                 SoundSlots[SoundObjects[i].handle].playing = 0;
 689                                                 SoundObjects[i].flags &= ~SOF_PLAYING;          // Mark sound as not playing
 690                                         }
 691                                 } else {
 692                                         if (!(SoundObjects[i].flags & SOF_PLAYING))     {
 693                                                 digi_start_sound_object(i);
 694                                         } else {
 695                                                 SoundSlots[SoundObjects[i].handle].volume = fixmuldiv(SoundObjects[i].volume,digi_volume,F1_0);
 696                                         }
 697                                 }
 698                         }
 699
 700                         if (oldpan != SoundObjects[i].pan)      {
 701                                 if (SoundObjects[i].flags & SOF_PLAYING)
 702                                         SoundSlots[SoundObjects[i].handle].pan = SoundObjects[i].pan;
 703                         }
 704                 }
 705         }
 706 }
 707
 708 void digi_init_sounds()
 709 {
 710         int i;
 711
 712         if (!digi_initialised) return;
 713
 714         digi_reset_digi_sounds();
 715
 716         for (i=0; i<MAX_SOUND_OBJECTS; i++ )    {
 717                 if (digi_sounds_initialized) {
 718                         if ( SoundObjects[i].flags & SOF_PLAYING )      {
 719                                 SoundSlots[SoundObjects[i].handle].playing=0;
 720                         }
 721                 }
 722                 SoundObjects[i].flags = 0;      // Mark as dead, so some other sound can use this sound
 723         }
 724         digi_sounds_initialized = 1;
 725 }
 726
 727 //added on 980905 by adb from original source to make sfx volume work
 728 void digi_set_digi_volume( int dvolume )
 729 {
 730         dvolume = fixmuldiv( dvolume, SOUND_MAX_VOLUME, 0x7fff);
 731         if ( dvolume > SOUND_MAX_VOLUME )
 732                 digi_volume = SOUND_MAX_VOLUME;
 733         else if ( dvolume < 0 )
 734                 digi_volume = 0;
 735         else
 736                 digi_volume = dvolume;
 737
 738         if ( !digi_initialised ) return;
 739
 740         digi_sync_sounds();
 741 }
 742 //end edit by adb
 743
 744 void digi_set_volume( int dvolume, int mvolume ) { }
 745
 746 int digi_is_sound_playing(int soundno)
 747 {
 748         int i;
 749
 750         soundno = digi_xlat_sound(soundno);
 751
 752         for (i = 0; i < MAX_SOUND_SLOTS; i++)
 753                   //changed on 980905 by adb: added SoundSlots[i].playing &&
 754                   if (SoundSlots[i].playing && SoundSlots[i].soundno == soundno)
 755                   //end changes by adb
 756                         return 1;
 757         return 0;
 758 }
 759
 760
 761 void digi_pause_all() { }
 762 void digi_resume_all() { }
 763 void digi_stop_all() { }
 764
 765  //added on 980905 by adb to make sound channel setting work
 766 void digi_set_max_channels(int n) {
 767         digi_max_channels       = n;
 768
 769         if ( digi_max_channels < 1 )
 770                 digi_max_channels = 1;
 771         if ( digi_max_channels > (MAX_SOUND_SLOTS-MAX_SOUND_OBJECTS) )
 772                 digi_max_channels = (MAX_SOUND_SLOTS-MAX_SOUND_OBJECTS);
 773
 774         if ( !digi_initialised ) return;
 775
 776         digi_reset_digi_sounds();
 777 }
 778
 779 int digi_get_max_channels() {
 780         return digi_max_channels;
 781 }
 782 // end edit by adb
 783
 784 void digi_reset_digi_sounds() {
 785  int i;
 786
 787  for (i=0; i< MAX_SOUND_SLOTS; i++)
 788   SoundSlots[i].playing=0;
 789
 790  //added on 980905 by adb to reset sound kill system
 791  memset(SampleHandles, 255, sizeof(SampleHandles));
 792  next_handle = 0;
 793  //end edit by adb
 794 }
 795
 796
 797 // MIDI stuff follows.
 798 //added/killed on 11/25/98 by Matthew Mueller
 799 //void digi_set_midi_volume( int mvolume ) { }
 800 //void digi_play_midi_song( char * filename, char * melodic_bank, char * drum_bank, int loop ) {}
 801 //void digi_stop_current_song()
 802 //{
 803 //#ifdef HMIPLAY
 804 //        char buf[10];
 805 //
 806 //        sprintf(buf,"s");
 807 //        send_ipc(buf);
 808 //#endif
 809 //}
 810 //end this section kill - MM