src/engine/e_sound.pas

   1 unit e_sound;
   2
   3 interface
   4
   5 uses
   6   sdl2,
   7   SDL2_mixer,
   8   e_log,
   9   SysUtils;
  10
  11 type
  12   TSoundRec = record
  13     Data: Pointer;
  14     Sound: PMix_Chunk;
  15     Music: PMix_Music;
  16     isMusic: Boolean;
  17   end;
  18
  19   TBasicSound = class (TObject)
  20   private
  21     FChannel: Integer; // <0: no channel allocated
  22
  23   protected
  24     FID: DWORD;
  25     FMusic: Boolean;
  26     FPosition: DWORD;
  27     FPriority: Integer;
  28
  29     function RawPlay(Pan: Single; Volume: Single; aPos: DWORD): Boolean;
  30
  31   public
  32     constructor Create();
  33     destructor Destroy(); override;
  34     procedure SetID(ID: DWORD);
  35     procedure FreeSound();
  36     function IsPlaying(): Boolean;
  37     procedure Stop();
  38     function IsPaused(): Boolean;
  39     procedure Pause(Enable: Boolean);
  40     function GetVolume(): Single;
  41     procedure SetVolume(Volume: Single);
  42     function GetPan(): Single;
  43     procedure SetPan(Pan: Single);
  44     function IsMuted(): Boolean;
  45     procedure Mute(Enable: Boolean);
  46     function GetPosition(): DWORD;
  47     procedure SetPosition(aPos: DWORD);
  48     procedure SetPriority(priority: Integer);
  49   end;
  50
  51 const
  52   NO_SOUND_ID = DWORD(-1);
  53
  54 function e_InitSoundSystem(): Boolean;
  55
  56 function e_LoadSound(FileName: string; var ID: DWORD; isMusic: Boolean): Boolean;
  57 function e_LoadSoundMem(pData: Pointer; Length: Integer; var ID: DWORD; isMusic: Boolean): Boolean;
  58
  59 // returns channel number or -1
  60 function e_PlaySound(ID: DWORD): Integer;
  61 function e_PlaySoundPan(ID: DWORD; Pan: Single): Integer;
  62 function e_PlaySoundVolume(ID: DWORD; Volume: Single): Integer;
  63 function e_PlaySoundPanVolume(ID: DWORD; Pan, Volume: Single): Integer;
  64
  65 procedure e_ModifyChannelsVolumes(SoundMod: Single; setMode: Boolean);
  66 procedure e_MuteChannels(Enable: Boolean);
  67 procedure e_StopChannels();
  68
  69 procedure e_DeleteSound(ID: DWORD);
  70 procedure e_RemoveAllSounds();
  71 procedure e_ReleaseSoundSystem();
  72 procedure e_SoundUpdate();
  73
  74 var
  75   e_SoundsArray: array of TSoundRec = nil;
  76
  77 implementation
  78
  79 uses
  80   g_window, g_options, BinEditor;
  81
  82 const
  83   N_CHANNELS = 512;
  84   N_MUSCHAN = N_CHANNELS+42;
  85
  86 var
  87   SoundMuted: Boolean = False;
  88   SoundInitialized: Boolean = False;
  89
  90
  91 function e_InitSoundSystem(): Boolean;
  92 var
  93   res: Integer;
  94 begin
  95   if SoundInitialized then begin Result := true; Exit end;
  96
  97   Result := False;
  98   SoundInitialized := False;
  99
 100 { // wow, this is actually MIDI player!
 101   // we need module player
 102   if (Mix_Init(MIX_INIT_MOD) and MIX_INIT_MOD) <> MIX_INIT_MOD then
 103   begin
 104     e_WriteLog('Error initializing SDL module player:', MSG_FATALERROR);
 105     e_WriteLog(Mix_GetError(), MSG_FATALERROR);
 106     //Exit;
 107   end;
 108 }
 109
 110   res := Mix_OpenAudio(44100, AUDIO_S16LSB, 2, 512);
 111   if res = -1 then
 112   begin
 113     e_WriteLog('Error initializing SDL mixer:', MSG_FATALERROR);
 114     e_WriteLog(Mix_GetError(), MSG_FATALERROR);
 115     Exit;
 116   end;
 117
 118   Mix_AllocateChannels(N_CHANNELS);
 119
 120   SoundInitialized := True;
 121   Result := True;
 122 end;
 123
 124 function e_isMusic (id: DWORD): Boolean;
 125 begin
 126   Result := False;
 127   if (e_SoundsArray <> nil) and (id <= High(e_SoundsArray)) then
 128   begin
 129     Result := (e_SoundsArray[id].Music <> nil);
 130   end;
 131 end;
 132
 133 function e_isSound (id: DWORD): Boolean;
 134 begin
 135   Result := False;
 136   if (e_SoundsArray <> nil) and (id <= High(e_SoundsArray)) then
 137   begin
 138     Result := (e_SoundsArray[id].Sound <> nil);
 139   end;
 140 end;
 141
 142 function FindESound(): DWORD;
 143 var
 144   i: Integer;
 145 begin
 146   if e_SoundsArray <> nil then
 147     for i := 0 to High(e_SoundsArray) do
 148       if (e_SoundsArray[i].Sound = nil) and (e_SoundsArray[i].Music = nil) then
 149       begin
 150         Result := i;
 151         Exit;
 152       end;
 153
 154   if e_SoundsArray = nil then
 155     begin
 156       SetLength(e_SoundsArray, 16);
 157       Result := 0;
 158     end
 159   else
 160     begin
 161       Result := High(e_SoundsArray) + 1;
 162       SetLength(e_SoundsArray, Length(e_SoundsArray) + 16);
 163     end;
 164 end;
 165
 166 function e_LoadSound(FileName: String; var ID: DWORD; isMusic: Boolean): Boolean;
 167 var
 168   find_id: DWORD;
 169 begin
 170   Result := False;
 171   if not SoundInitialized then Exit;
 172
 173   if isMusic then e_WriteLog('Loading music '+FileName+'...', MSG_NOTIFY)
 174   else e_WriteLog('Loading sound '+FileName+'...', MSG_NOTIFY);
 175
 176   find_id := FindESound();
 177
 178   e_SoundsArray[find_id].Data := nil;
 179   e_SoundsArray[find_id].isMusic := isMusic;
 180
 181   if isMusic then
 182   begin
 183     e_SoundsArray[find_id].Music := Mix_LoadMUS(PAnsiChar(FileName));
 184     if e_SoundsArray[find_id].Music = nil then Exit;
 185   end
 186   else
 187   begin
 188     e_SoundsArray[find_id].Sound := Mix_LoadWAV(PAnsiChar(FileName));
 189     if e_SoundsArray[find_id].Sound = nil then Exit;
 190   end;
 191
 192   ID := find_id;
 193
 194   Result := True;
 195 end;
 196
 197 function e_LoadSoundMem(pData: Pointer; Length: Integer; var ID: DWORD; isMusic: Boolean): Boolean;
 198 var
 199   find_id: DWORD;
 200   rw: PSDL_RWops;
 201 begin
 202   Result := False;
 203   if not SoundInitialized then Exit;
 204
 205   rw := SDL_RWFromConstMem(pData, Length);
 206   if rw = nil then Exit;
 207
 208   find_id := FindESound();
 209
 210   e_SoundsArray[find_id].Data := pData;
 211   e_SoundsArray[find_id].isMusic := isMusic;
 212
 213   if isMusic then
 214   begin
 215     e_SoundsArray[find_id].Music := Mix_LoadMUS_RW(rw, 0);
 216   end
 217   else
 218   begin
 219     e_SoundsArray[find_id].Sound := Mix_LoadWAV_RW(rw, 0);
 220   end;
 221   SDL_FreeRW(rw);
 222   if (e_SoundsArray[find_id].Sound = nil) and (e_SoundsArray[find_id].Music = nil) then Exit;
 223
 224   ID := find_id;
 225
 226   Result := True;
 227 end;
 228
 229 function e_PlaySound (ID: DWORD): Integer;
 230 var
 231   res: Integer = -1;
 232 begin
 233   Result := -1;
 234   if not SoundInitialized then Exit;
 235
 236   if {(e_SoundsArray[ID].nRefs >= gMaxSimSounds) or} (e_SoundsArray[ID].Sound = nil) and (e_SoundsArray[ID].Music = nil) then Exit;
 237
 238   if e_SoundsArray[ID].Music <> nil then
 239   begin
 240     res := Mix_PlayMusic(e_SoundsArray[ID].Music, -1);
 241     if res >= 0 then res := N_MUSCHAN;
 242     Result := res;
 243     Exit;
 244   end;
 245
 246   if e_SoundsArray[ID].Sound <> nil then
 247     res := Mix_PlayChannel(-1, e_SoundsArray[ID].Sound, 0);
 248   {
 249   if e_SoundsArray[ID].isMusic then
 250     res := Mix_PlayChannel(-1, e_SoundsArray[ID].Sound, -1)
 251   else
 252     res := Mix_PlayChannel(-1, e_SoundsArray[ID].Sound, 0);
 253   }
 254
 255   if SoundMuted and (res >= 0) then Mix_Volume(res, 0);
 256
 257   Result := res;
 258 end;
 259
 260 function e_PlaySoundPan(ID: DWORD; Pan: Single): Integer;
 261 var
 262   chan: Integer;
 263   l, r: UInt8;
 264 begin
 265   Result := -1;
 266   chan := e_PlaySound(ID);
 267   if (chan >= 0) and (chan <> N_MUSCHAN) then
 268   begin
 269     if Pan < -1.0 then Pan := -1.0 else if Pan > 1.0 then Pan := 1.0;
 270     Pan := Pan+1.0; // 0..2
 271     l := trunc(127.0*(2.0-Pan));
 272     r := trunc(127.0*Pan);
 273     Mix_SetPanning(chan, l, r);
 274   end;
 275   Result := chan;
 276 end;
 277
 278 function e_PlaySoundVolume(ID: DWORD; Volume: Single): Integer;
 279 var
 280   chan: Integer;
 281 begin
 282   Result := -1;
 283   chan := e_PlaySound(ID);
 284   if (chan >= 0) and (chan <> N_MUSCHAN) then
 285   begin
 286     if Volume < 0 then Volume := 0 else if Volume > 1 then Volume := 1;
 287     if not SoundMuted then Mix_Volume(chan, trunc(Volume*MIX_MAX_VOLUME));
 288   end;
 289   Result := chan;
 290 end;
 291
 292 function e_PlaySoundPanVolume(ID: DWORD; Pan, Volume: Single): Integer;
 293 var
 294   chan: Integer;
 295   l, r: UInt8;
 296 begin
 297   Result := -1;
 298   chan := e_PlaySound(ID);
 299   if (chan >= 0) and (chan <> N_MUSCHAN) then
 300   begin
 301     if Pan < -1.0 then Pan := -1.0 else if Pan > 1.0 then Pan := 1.0;
 302     Pan := Pan+1.0; // 0..2
 303     l := trunc(127.0*(2.0-Pan));
 304     r := trunc(127.0*Pan);
 305     Mix_SetPanning(chan, l, r);
 306     if Volume < 0 then Volume := 0 else if Volume > 1 then Volume := 1;
 307     if not SoundMuted then Mix_Volume(chan, trunc(Volume*MIX_MAX_VOLUME));
 308   end;
 309   Result := chan;
 310 end;
 311
 312 procedure e_DeleteSound(ID: DWORD);
 313 begin
 314   if (e_SoundsArray[ID].Sound = nil) and (e_SoundsArray[ID].Music = nil) then Exit;
 315   if e_SoundsArray[ID].Data <> nil then FreeMem(e_SoundsArray[ID].Data);
 316
 317   if e_SoundsArray[ID].Sound <> nil then Mix_FreeChunk(e_SoundsArray[ID].Sound);
 318   if e_SoundsArray[ID].Music <> nil then Mix_FreeMusic(e_SoundsArray[ID].Music);
 319
 320   e_SoundsArray[ID].Sound := nil;
 321   e_SoundsArray[ID].Music := nil;
 322   e_SoundsArray[ID].Data := nil;
 323 end;
 324
 325 //TODO
 326 procedure e_ModifyChannelsVolumes(SoundMod: Single; setMode: Boolean);
 327 {
 328 var
 329   i: Integer;
 330   Chan: FMOD_CHANNEL;
 331   vol: Single;
 332 }
 333 begin
 334   // Mix_Volume(-1, volm);
 335 {
 336   for i := 0 to N_CHANNELS-1 do
 337   begin
 338     Chan := nil;
 339     res := FMOD_System_GetChannel(F_System, i, Chan);
 340
 341     if (res = FMOD_OK) and (Chan <> nil) then
 342     begin
 343       res := FMOD_Channel_GetVolume(Chan, vol);
 344
 345       if res = FMOD_OK then
 346       begin
 347         if setMode then
 348           vol := SoundMod
 349         else
 350           vol := vol * SoundMod;
 351
 352         res := FMOD_Channel_SetVolume(Chan, vol);
 353
 354         if res <> FMOD_OK then
 355         begin
 356         end;
 357       end;
 358     end;
 359   end;
 360 }
 361 end;
 362
 363 //TODO
 364 procedure e_MuteChannels(Enable: Boolean);
 365 {
 366 var
 367   res: FMOD_RESULT;
 368   i: Integer;
 369   Chan: FMOD_CHANNEL;
 370 }
 371 begin
 372 {
 373   if Enable = SoundMuted then
 374     Exit;
 375
 376   SoundMuted := Enable;
 377
 378   for i := 0 to N_CHANNELS-1 do
 379   begin
 380     Chan := nil;
 381     res := FMOD_System_GetChannel(F_System, i, Chan);
 382
 383     if (res = FMOD_OK) and (Chan <> nil) then
 384     begin
 385       res := FMOD_Channel_SetMute(Chan, Enable);
 386
 387       if res <> FMOD_OK then
 388       begin
 389       end;
 390     end;
 391   end;
 392 }
 393 end;
 394
 395 procedure e_StopChannels();
 396 begin
 397   Mix_HaltChannel(-1);
 398   Mix_HaltMusic();
 399 end;
 400
 401 procedure e_RemoveAllSounds();
 402 var
 403   i: Integer;
 404 begin
 405   if SoundInitialized then e_StopChannels();
 406
 407   for i := 0 to High(e_SoundsArray) do
 408     if e_SoundsArray[i].Sound <> nil then
 409       e_DeleteSound(i);
 410
 411   SetLength(e_SoundsArray, 0);
 412   e_SoundsArray := nil;
 413 end;
 414
 415 procedure e_ReleaseSoundSystem();
 416 begin
 417   e_RemoveAllSounds();
 418
 419   if SoundInitialized then
 420   begin
 421     Mix_CloseAudio();
 422     SoundInitialized := False;
 423   end;
 424 end;
 425
 426 procedure e_SoundUpdate();
 427 begin
 428   //FMOD_System_Update(F_System);
 429 end;
 430
 431 { TBasicSound: }
 432
 433 constructor TBasicSound.Create();
 434 begin
 435   FID := NO_SOUND_ID;
 436   FMusic := False;
 437   FChannel := -1;
 438   FPosition := 0;
 439   FPriority := 128;
 440 end;
 441
 442 destructor TBasicSound.Destroy();
 443 begin
 444   FreeSound();
 445   inherited;
 446 end;
 447
 448 procedure TBasicSound.FreeSound();
 449 begin
 450   if FID = NO_SOUND_ID then Exit;
 451   Stop();
 452   FID := NO_SOUND_ID;
 453   FMusic := False;
 454   FPosition := 0;
 455 end;
 456
 457 // aPos: msecs
 458 function TBasicSound.RawPlay(Pan: Single; Volume: Single; aPos: DWORD): Boolean;
 459 begin
 460   Result := False;
 461   if (FID = NO_SOUND_ID) or not SoundInitialized then Exit;
 462   Result := (e_PlaySoundPanVolume(FID, Pan, Volume) >= 0);
 463   //TODO: aPos
 464 end;
 465
 466 procedure TBasicSound.SetID(ID: DWORD);
 467 begin
 468   FreeSound();
 469   FID := ID;
 470   FMusic := e_SoundsArray[ID].isMusic;
 471 end;
 472
 473 function TBasicSound.IsPlaying(): Boolean;
 474 begin
 475   Result := False;
 476   if FChannel < 0 then Exit;
 477   if e_isSound(FID) then Result := (Mix_Playing(FChannel) > 0)
 478   else Result := (Mix_PlayingMusic() > 0);
 479 end;
 480
 481 procedure TBasicSound.Stop();
 482
 483 begin
 484   if FChannel < 0 then Exit;
 485   //GetPosition();
 486   if e_isSound(FID) then Mix_HaltChannel(FChannel) else Mix_HaltMusic();
 487   FChannel := -1;
 488 end;
 489
 490 function TBasicSound.IsPaused(): Boolean;
 491 begin
 492   Result := False;
 493   if FChannel < 0 then Exit;
 494   if e_isSound(FID) then Result := (Mix_Paused(FChannel) > 0) else Result := (Mix_PausedMusic() > 0);
 495 end;
 496
 497 procedure TBasicSound.Pause(Enable: Boolean);
 498 begin
 499   if FChannel < 0 then Exit;
 500   if IsPaused() then
 501   begin
 502     if Enable then
 503     begin
 504       if e_isSound(FID) then Mix_Resume(FChannel) else Mix_ResumeMusic();
 505     end;
 506   end
 507   else
 508   begin
 509     if not Enable then
 510     begin
 511       if e_isSound(FID) then Mix_Pause(FChannel) else Mix_PauseMusic();
 512     end;
 513   end;
 514   {
 515   if Enable then
 516   begin
 517     res := FMOD_Channel_GetPosition(FChannel, FPosition, FMOD_TIMEUNIT_MS);
 518     if res <> FMOD_OK then
 519     begin
 520     end;
 521   end;
 522   }
 523 end;
 524
 525 //TODO
 526 function TBasicSound.GetVolume(): Single;
 527 begin
 528   Result := 0.0;
 529   if FChannel < 0 then Exit;
 530 {
 531   res := FMOD_Channel_GetVolume(FChannel, vol);
 532   if res <> FMOD_OK then
 533   begin
 534     Exit;
 535   end;
 536   Result := vol;
 537 }
 538 end;
 539
 540 procedure TBasicSound.SetVolume(Volume: Single);
 541 begin
 542   if FChannel < 0 then Exit;
 543   if Volume < 0 then Volume := 0 else if Volume > 1 then Volume := 1;
 544   if e_isSound(FID) then Mix_Volume(FChannel, trunc(Volume*MIX_MAX_VOLUME))
 545   else Mix_VolumeMusic(trunc(Volume*MIX_MAX_VOLUME))
 546 end;
 547
 548 //TODO
 549 function TBasicSound.GetPan(): Single;
 550 begin
 551   Result := 0.0;
 552   if FChannel < 0 then Exit;
 553 {
 554   res := FMOD_Channel_GetPan(FChannel, pan);
 555   if res <> FMOD_OK then
 556   begin
 557     Exit;
 558   end;
 559   Result := pan;
 560 }
 561 end;
 562
 563 procedure TBasicSound.SetPan(Pan: Single);
 564 var
 565   l, r: UInt8;
 566 begin
 567   if FChannel < 0 then Exit;
 568   if not e_isSound(FID) then Exit;
 569   if Pan < -1.0 then Pan := -1.0 else if Pan > 1.0 then Pan := 1.0;
 570   Pan := Pan+1.0; // 0..2
 571   l := trunc(127.0*(2.0-Pan));
 572   r := trunc(127.0*Pan);
 573   Mix_SetPanning(FChannel, l, r);
 574 end;
 575
 576 //TODO
 577 function TBasicSound.IsMuted(): Boolean;
 578 begin
 579   Result := False;
 580   if FChannel < 0 then Exit;
 581 {
 582   res := FMOD_Channel_GetMute(FChannel, b);
 583   if res <> FMOD_OK then
 584   begin
 585     Exit;
 586   end;
 587   Result := b;
 588 }
 589 end;
 590
 591 //TODO
 592 procedure TBasicSound.Mute(Enable: Boolean);
 593 begin
 594   if FChannel < 0 then Exit;
 595 {
 596   res := FMOD_Channel_SetMute(FChannel, Enable);
 597   if res <> FMOD_OK then
 598   begin
 599   end;
 600 }
 601 end;
 602
 603 //TODO
 604 function TBasicSound.GetPosition(): DWORD;
 605 begin
 606   Result := 0;
 607   if FChannel < 0 then Exit;
 608 {
 609   res := FMOD_Channel_GetPosition(FChannel, FPosition, FMOD_TIMEUNIT_MS);
 610   if res <> FMOD_OK then
 611   begin
 612     Exit;
 613   end;
 614   Result := FPosition;
 615 }
 616 end;
 617
 618 //TODO
 619 procedure TBasicSound.SetPosition(aPos: DWORD);
 620 begin
 621   FPosition := aPos;
 622   if FChannel < 0 then Exit;
 623 {
 624   res := FMOD_Channel_SetPosition(FChannel, FPosition, FMOD_TIMEUNIT_MS);
 625   if res <> FMOD_OK then
 626   begin
 627   end;
 628 }
 629 end;
 630
 631 //TODO
 632 procedure TBasicSound.SetPriority(priority: Integer);
 633 begin
 634 {
 635   if (FChannel <> nil) and (FPriority <> priority) and
 636      (priority >= 0) and (priority <= 256) then
 637   begin
 638     FPriority := priority;
 639     res := FMOD_Channel_SetPriority(FChannel, priority);
 640     if res <> FMOD_OK then
 641     begin
 642     end;
 643   end;
 644 }
 645 end;
 646
 647 end.