X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fengine%2Fe_sound.pas;h=790dc0a65d41a6cadbacadce2a7055f9b2648602;hb=8b7a40b1a145f53e80098e0faf139c942d2509e5;hp=76f9929f729f4f07e424bae5bdbe0aef4524bef9;hpb=ff1017e1923bcf524a9b0006d64cb88b7ddf98d1;p=d2df-sdl.git

diff --git a/src/engine/e_sound.pas b/src/engine/e_sound.pas
index 76f9929..790dc0a 100644
--- a/src/engine/e_sound.pas
+++ b/src/engine/e_sound.pas
@@ -1,799 +1,28 @@
+(* Copyright (C)  Doom 2D: Forever Developers
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License ONLY.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *)
+{$INCLUDE ../shared/a_modes.inc}
 unit e_sound;
 
-interface
-
-uses
-  sdl2,
-  SDL2_mixer,
-  e_log,
-  SysUtils;
-
-type
-  TSoundRec = record
-    Data: Pointer;
-    Sound: PMix_Chunk;
-    Music: PMix_Music;
-    isMusic: Boolean;
-    nRefs: Integer;
-  end;
-
-  TBasicSound = class (TObject)
-  private
-    FChanNum: Integer; // <0: no channel allocated
-
-  protected
-    FID: DWORD;
-    FMusic: Boolean;
-    FPosition: DWORD;
-    FPriority: Integer;
-
-    function RawPlay(Pan: Single; Volume: Single; aPos: DWORD): Boolean;
-    function GetChan (): Integer;
-
-    property Channel: Integer read GetChan;
-
-  public
-    constructor Create();
-    destructor Destroy(); override;
-    procedure SetID(ID: DWORD);
-    procedure FreeSound();
-    function IsPlaying(): Boolean;
-    procedure Stop();
-    function IsPaused(): Boolean;
-    procedure Pause(Enable: Boolean);
-    function GetVolume(): Single;
-    procedure SetVolume(Volume: Single);
-    function GetPan(): Single;
-    procedure SetPan(Pan: Single);
-    function IsMuted(): Boolean;
-    procedure Mute(Enable: Boolean);
-    function GetPosition(): DWORD;
-    procedure SetPosition(aPos: DWORD);
-    procedure SetPriority(priority: Integer);
-  end;
-
-const
-  NO_SOUND_ID = DWORD(-1);
-
-function e_InitSoundSystem(): Boolean;
-
-function e_LoadSound(FileName: string; var ID: DWORD; isMusic: Boolean): Boolean;
-function e_LoadSoundMem(pData: Pointer; Length: Integer; var ID: DWORD; isMusic: Boolean): Boolean;
-
-// returns channel number or -1
-function e_PlaySound(ID: DWORD): Integer;
-function e_PlaySoundPan(ID: DWORD; Pan: Single): Integer;
-function e_PlaySoundVolume(ID: DWORD; Volume: Single): Integer;
-function e_PlaySoundPanVolume(ID: DWORD; Pan, Volume: Single): Integer;
-
-procedure e_ModifyChannelsVolumes(SoundMod: Single; setMode: Boolean);
-procedure e_MuteChannels(Enable: Boolean);
-procedure e_StopChannels();
-
-procedure e_DeleteSound(ID: DWORD);
-procedure e_RemoveAllSounds();
-procedure e_ReleaseSoundSystem();
-procedure e_SoundUpdate();
-
-var
-  e_SoundsArray: array of TSoundRec = nil;
-
-implementation
-
-uses
-  g_window, g_options, BinEditor;
-
-const
-  N_CHANNELS = 512;
-  N_MUSCHAN = N_CHANNELS+42;
-
-type
-  TChanInfo = record
-    id: DWORD; // sound id
-    muted: Boolean;
-    oldvol: Integer; // for muted
-    pan: Single;
-  end;
-
-var
-  SoundMuted: Boolean = False;
-  SoundInitialized: Boolean = False;
-  ChanSIds: array[0..N_CHANNELS] of TChanInfo;
-  MusVolume: Integer = MIX_MAX_VOLUME;
-
-
-procedure chanFinished (chan: Integer); cdecl;
-begin
-  if (chan >= 0) and (chan < N_CHANNELS) then
-  begin
-    if ChanSIds[chan].id <> NO_SOUND_ID then
-    begin
-      Dec(e_SoundsArray[ChanSIds[chan].id].nRefs);
-      ChanSIds[chan].id := NO_SOUND_ID;
-    end;
-  end;
-end;
-
-
-function e_InitSoundSystem(): Boolean;
-var
-  res, i: Integer;
-begin
-  if SoundInitialized then begin Result := true; Exit end;
-
-  Result := False;
-  SoundInitialized := False;
-
-{ // wow, this is actually MIDI player!
-  // we need module player
-  if (Mix_Init(MIX_INIT_MOD) and MIX_INIT_MOD) <> MIX_INIT_MOD then
-  begin
-    e_WriteLog('Error initializing SDL module player:', MSG_FATALERROR);
-    e_WriteLog(Mix_GetError(), MSG_FATALERROR);
-    //Exit;
-  end;
-}
-
-  res := Mix_OpenAudio(44100, AUDIO_S16LSB, 2, 2048);
-  if res = -1 then
-  begin
-    e_WriteLog('Error initializing SDL mixer:', MSG_FATALERROR);
-    e_WriteLog(Mix_GetError(), MSG_FATALERROR);
-    Exit;
-  end;
-
-  Mix_AllocateChannels(N_CHANNELS);
-  Mix_ChannelFinished(chanFinished);
-
-  for i := 0 to N_CHANNELS-1 do
-  begin
-    ChanSIds[i].id := NO_SOUND_ID;
-    ChanSIds[i].muted := SoundMuted;
-    ChanSIds[i].oldvol := MIX_MAX_VOLUME;
-    ChanSIds[i].pan := 1.0;
-  end;
-  MusVolume := MIX_MAX_VOLUME;
-
-  SoundInitialized := True;
-  Result := True;
-end;
-
-function e_isMusic (id: DWORD): Boolean;
-begin
-  Result := False;
-  if (e_SoundsArray <> nil) and (id <= High(e_SoundsArray)) then
-  begin
-    Result := (e_SoundsArray[id].Music <> nil);
-  end;
-end;
-
-function e_isSound (id: DWORD): Boolean;
-begin
-  Result := False;
-  if (e_SoundsArray <> nil) and (id <= High(e_SoundsArray)) then
-  begin
-    Result := (e_SoundsArray[id].Sound <> nil);
-  end;
-end;
-
-function FindESound(): DWORD;
-var
-  i: Integer;
-begin
-  if e_SoundsArray <> nil then
-  begin
-    for i := 0 to High(e_SoundsArray) do
-      if (e_SoundsArray[i].Sound = nil) and (e_SoundsArray[i].Music = nil) then
-      begin
-        Result := i;
-        Exit;
-      end;
-  end;
-  if e_SoundsArray = nil then
-  begin
-    SetLength(e_SoundsArray, 16);
-    Result := 0;
-  end
-  else
-  begin
-    Result := High(e_SoundsArray) + 1;
-    SetLength(e_SoundsArray, Length(e_SoundsArray) + 16);
-  end;
-end;
-
-function e_LoadSound(FileName: String; var ID: DWORD; isMusic: Boolean): Boolean;
-var
-  find_id: DWORD;
-begin
-  Result := False;
-  if not SoundInitialized then Exit;
-
-  if isMusic then e_WriteLog('Loading music '+FileName+'...', MSG_NOTIFY)
-  else e_WriteLog('Loading sound '+FileName+'...', MSG_NOTIFY);
-
-  find_id := FindESound();
-
-  e_SoundsArray[find_id].Data := nil;
-  e_SoundsArray[find_id].isMusic := isMusic;
-  e_SoundsArray[find_id].nRefs := 0;
-
-  if isMusic then
-  begin
-    e_SoundsArray[find_id].Music := Mix_LoadMUS(PAnsiChar(FileName));
-    if e_SoundsArray[find_id].Music = nil then Exit;
-  end
-  else
-  begin
-    e_SoundsArray[find_id].Sound := Mix_LoadWAV(PAnsiChar(FileName));
-    if e_SoundsArray[find_id].Sound = nil then Exit;
-  end;
-
-  ID := find_id;
-
-  Result := True;
-end;
-
-function e_LoadSoundMem(pData: Pointer; Length: Integer; var ID: DWORD; isMusic: Boolean): Boolean;
-var
-  find_id: DWORD;
-  rw: PSDL_RWops;
-begin
-  Result := False;
-  if not SoundInitialized then Exit;
-
-  rw := SDL_RWFromConstMem(pData, Length);
-  if rw = nil then Exit;
-
-  find_id := FindESound();
-
-  e_SoundsArray[find_id].Data := pData;
-  e_SoundsArray[find_id].isMusic := isMusic;
-  e_SoundsArray[find_id].nRefs := 0;
-
-  if isMusic then
-  begin
-    e_SoundsArray[find_id].Music := Mix_LoadMUS_RW(rw, 0);
-  end
-  else
-  begin
-    e_SoundsArray[find_id].Sound := Mix_LoadWAV_RW(rw, 0);
-  end;
-  SDL_FreeRW(rw);
-  if (e_SoundsArray[find_id].Sound = nil) and (e_SoundsArray[find_id].Music = nil) then Exit;
-
-  ID := find_id;
-
-  Result := True;
-end;
-
-function e_PlaySound (ID: DWORD): Integer;
-var
-  res: Integer = -1;
-begin
-  Result := -1;
-  if not SoundInitialized then Exit;
-
-  if e_isSound(ID) then
-  begin
-    if e_SoundsArray[ID].nRefs >= gMaxSimSounds then Exit;
-    Inc(e_SoundsArray[ID].nRefs);
-    res := Mix_PlayChannel(-1, e_SoundsArray[ID].Sound, 0);
-    if res >= 0 then
-    begin
-      ChanSIds[res].id := ID;
-      ChanSIds[res].muted := SoundMuted;
-      if SoundMuted then Mix_Volume(res, 0) else Mix_Volume(res, ChanSIds[res].oldvol);
-      {
-      if e_SoundsArray[ID].isMusic then
-        res := Mix_PlayChannel(-1, e_SoundsArray[ID].Sound, -1)
-      else
-        res := Mix_PlayChannel(-1, e_SoundsArray[ID].Sound, 0);
-      }
-    end;
-  end
-  else
-  begin
-    if not e_isMusic(ID) then Exit;
-    res := Mix_PlayMusic(e_SoundsArray[ID].Music, -1);
-    if res >= 0 then res := N_MUSCHAN;
-    if SoundMuted then Mix_VolumeMusic(0) else Mix_VolumeMusic(MusVolume);
-    Result := res;
-  end;
-
-  Result := res;
-end;
-
-function e_chanSetPan (chan: Integer; Pan: Single): Boolean;
-var
-  l, r: UInt8;
-begin
-  Result := True;
-  if chan = N_MUSCHAN then
-  begin
-    // no panning for music
-  end
-  else if chan >= 0 then
-  begin
-    if Pan < -1.0 then Pan := -1.0 else if Pan > 1.0 then Pan := 1.0;
-    Pan := Pan+1.0; // 0..2
-    l := trunc(127.0*(2.0-Pan));
-    r := trunc(127.0*Pan);
-    Mix_SetPanning(chan, l, r);
-    ChanSIds[chan].pan := Pan;
-  end
-  else
-  begin
-    Result := False;
-  end;
-end;
-
-function e_chanSetVol (chan: Integer; Volume: Single): Boolean;
-var
-  vol: Integer;
-begin
-  Result := True;
-  if Volume < 0 then Volume := 0 else if Volume > 1 then Volume := 1;
-  vol := trunc(Volume*MIX_MAX_VOLUME);
-  if chan = N_MUSCHAN then
-  begin
-    MusVolume := vol;
-    if SoundMuted then Mix_VolumeMusic(0) else Mix_VolumeMusic(vol);
-  end
-  else if chan >= 0 then
-  begin
-    ChanSIds[chan].oldvol := vol;
-    if ChanSIds[chan].muted then Mix_Volume(chan, 0) else Mix_Volume(chan, vol);
-  end
-  else
-  begin
-    Result := False;
-  end;
-end;
-
-function e_PlaySoundPan(ID: DWORD; Pan: Single): Integer;
-var
-  chan: Integer;
-begin
-  Result := -1;
-  chan := e_PlaySound(ID);
-  e_chanSetPan(chan, Pan);
-  Result := chan;
-end;
-
-function e_PlaySoundVolume(ID: DWORD; Volume: Single): Integer;
-var
-  chan: Integer;
-begin
-  Result := -1;
-  chan := e_PlaySound(ID);
-  e_chanSetVol(chan, Volume);
-  Result := chan;
-end;
-
-function e_PlaySoundPanVolume(ID: DWORD; Pan, Volume: Single): Integer;
-var
-  chan: Integer;
-begin
-  Result := -1;
-  chan := e_PlaySound(ID);
-  e_chanSetPan(chan, Pan);
-  e_chanSetVol(chan, Volume);
-  Result := chan;
-end;
-
-procedure e_DeleteSound(ID: DWORD);
-var
-  i: Integer;
-begin
-  if (e_SoundsArray[ID].Sound = nil) and (e_SoundsArray[ID].Music = nil) then Exit;
-
-  for i := 0 to N_CHANNELS-1 do
-  begin
-    if ChanSIds[i].id = ID then
-    begin
-      ChanSIds[i].id := NO_SOUND_ID;
-      Mix_HaltChannel(i);
-    end;
-  end;
-
-  if e_SoundsArray[ID].Data <> nil then FreeMem(e_SoundsArray[ID].Data);
-  if e_SoundsArray[ID].Sound <> nil then Mix_FreeChunk(e_SoundsArray[ID].Sound);
-  if e_SoundsArray[ID].Music <> nil then Mix_FreeMusic(e_SoundsArray[ID].Music);
-
-  e_SoundsArray[ID].Sound := nil;
-  e_SoundsArray[ID].Music := nil;
-  e_SoundsArray[ID].Data := nil;
-  e_SoundsArray[ID].nRefs := 0;
-end;
-
-procedure e_ModifyChannelsVolumes(SoundMod: Single; setMode: Boolean);
-var
-  i: Integer;
-  vol: Single;
-  ovol: Integer;
-begin
-  for i := 0 to N_CHANNELS-1 do
-  begin
-    ovol := ChanSIds[i].oldvol;
-    if setMode then
-    begin
-      vol := SoundMod;
-    end
-    else
-    begin
-      vol := (MIX_MAX_VOLUME+0.0)/ovol;
-      vol := vol*SoundMod;
-    end;
-    if vol < 0 then vol := 0 else if vol > 1 then vol := 1;
-    ChanSIds[i].oldvol := trunc(vol*MIX_MAX_VOLUME);
-    //if i = 0 then e_WriteLog(Format('modifying volumes: vol=%f; newvol=%d', [vol, ChanSIds[i].oldvol]), MSG_WARNING);
-    if ChanSIds[i].muted then Mix_Volume(i, 0) else Mix_Volume(i, ChanSIds[i].oldvol);
-  end;
-  ovol := Mix_VolumeMusic(-1);
-  if ovol >= 0 then
-  begin
-    if setMode then
-    begin
-      vol := SoundMod;
-    end
-    else
-    begin
-      vol := (MIX_MAX_VOLUME+0.0)/ovol;
-      vol := vol * SoundMod;
-    end;
-    if vol < 0 then vol := 0 else if vol > 1 then vol := 1;
-    MusVolume := trunc(vol*MIX_MAX_VOLUME);
-    if SoundMuted then Mix_VolumeMusic(0) else Mix_VolumeMusic(MusVolume);
-  end;
-end;
-
-procedure e_MuteChannels(Enable: Boolean);
-var
-  i: Integer;
-begin
-  //if Enable = SoundMuted then Exit;
-  SoundMuted := Enable;
-  for i := 0 to N_CHANNELS-1 do
-  begin
-    if ChanSIds[i].muted <> SoundMuted then
-    begin
-      ChanSIds[i].muted := SoundMuted;
-      //e_WriteLog(Format('gmuting sound for channel %d', [i]), MSG_WARNING);
-      if ChanSIds[i].muted then Mix_Volume(i, 0) else Mix_Volume(i, ChanSIds[i].oldvol);
-    end;
-  end;
-  if SoundMuted then Mix_VolumeMusic(0) else Mix_VolumeMusic(MusVolume);
-end;
-
-procedure e_StopChannels();
-var
-  i: Integer;
-begin
-  Mix_HaltChannel(-1);
-  Mix_HaltMusic();
-  for i := 0 to High(e_SoundsArray) do e_SoundsArray[i].nRefs := 0;
-  for i := 0 to N_CHANNELS-1 do ChanSIds[i].id := NO_SOUND_ID;
-end;
-
-procedure e_RemoveAllSounds();
-var
-  i: Integer;
-begin
-  if SoundInitialized then e_StopChannels();
-  for i := 0 to High(e_SoundsArray) do e_DeleteSound(i);
-  SetLength(e_SoundsArray, 0);
-  e_SoundsArray := nil;
-end;
-
-procedure e_ReleaseSoundSystem();
-begin
-  e_RemoveAllSounds();
-  if SoundInitialized then
-  begin
-    Mix_CloseAudio();
-    SoundInitialized := False;
-  end;
-end;
-
-procedure e_SoundUpdate();
-begin
-  //FMOD_System_Update(F_System);
-end;
-
-
-{ TBasicSound: }
-
-constructor TBasicSound.Create();
-begin
-  FID := NO_SOUND_ID;
-  FMusic := False;
-  FChanNum := -1;
-  FPosition := 0;
-  FPriority := 128;
-end;
-
-destructor TBasicSound.Destroy();
-begin
-  FreeSound();
-  inherited;
-end;
-
-function TBasicSound.GetChan (): Integer;
-begin
-  if (FID <> NO_SOUND_ID) and (FChanNum >= 0) and (FChanNum < N_CHANNELS) then
-  begin
-    if ChanSIds[FChanNum].id <> FID then FChanNum := -1;
-  end
-  else if e_isMusic(FID) then
-  begin
-    FChanNum := N_MUSCHAN;
-  end;
-  Result := FChanNum;
-end;
-
-procedure TBasicSound.FreeSound();
-begin
-  if FID = NO_SOUND_ID then Exit;
-  Stop();
-  FID := NO_SOUND_ID;
-  FMusic := False;
-  FPosition := 0;
-  FChanNum := -1;
-end;
-
-// aPos: msecs
-function TBasicSound.RawPlay(Pan: Single; Volume: Single; aPos: DWORD): Boolean;
-begin
-  Result := False;
-  if (FID = NO_SOUND_ID) or not SoundInitialized then Exit;
-  FChanNum := e_PlaySoundPanVolume(FID, Pan, Volume);
-  Result := (FChanNum >= 0);
-  //TODO: aPos
-end;
-
-procedure TBasicSound.SetID(ID: DWORD);
-begin
-  FreeSound();
-  FID := ID;
-  FMusic := e_SoundsArray[ID].isMusic;
-  FChanNum := -1;
-end;
-
-function TBasicSound.IsPlaying(): Boolean;
-var
-  chan: Integer;
-begin
-  Result := False;
-  if e_isSound(FID) then
-  begin
-    //e_WriteLog(Format('IsPlaying: FID=%u; FChanNum=%d', [FID, FChanNum]), MSG_WARNING);
-    chan := Channel;
-    if chan < 0 then
-    begin
-      //e_WriteLog(Format('IsPlaying: FID=%u; ONA', [FID]), MSG_WARNING);
-      Exit;
-    end;
-    //Result := (Mix_Playing(chan) > 0)
-    //e_WriteLog(Format('IsPlaying: FID=%u; TAN', [FID]), MSG_WARNING);
-    Result := True;
-  end
-  else if e_isMusic(FID) then
-  begin
-    Result := (Mix_PlayingMusic() > 0);
-  end;
-end;
-
-procedure TBasicSound.Stop();
-var
-  chan: Integer;
-begin
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan >= 0 then
-    begin
-      //GetPosition();
-      Mix_HaltChannel(chan);
-    end;
-  end
-  else if e_isMusic(FID) then
-  begin
-    Mix_HaltMusic();
-  end;
-  FChanNum := -1;
-end;
-
-function TBasicSound.IsPaused(): Boolean;
-var
-  chan: Integer;
-begin
-  Result := False;
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    Result := (Mix_Paused(chan) > 0);
-  end
-  else if e_isMusic(FID) then
-  begin
-    Result := (Mix_PausedMusic() > 0);
-  end;
-end;
-
-procedure TBasicSound.Pause(Enable: Boolean);
-var
-  chan: Integer;
-  pl: Boolean;
-begin
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    pl := not (Mix_Paused(chan) > 0);
-    if pl <> Enable then
-    begin
-      if Enable then Mix_Resume(chan) else Mix_Pause(chan);
-    end;
-  end
-  else if e_isMusic(FID) then
-  begin
-    pl := not (Mix_PausedMusic() > 0);
-    if pl <> Enable then
-    begin
-      if Enable then Mix_ResumeMusic() else Mix_PauseMusic();
-    end;
-  end;
-  {
-  if Enable then
-  begin
-    res := FMOD_Channel_GetPosition(FChanNum, FPosition, FMOD_TIMEUNIT_MS);
-    if res <> FMOD_OK then
-    begin
-    end;
-  end;
-  }
-end;
-
-function TBasicSound.GetVolume(): Single;
-var
-  chan: Integer;
-begin
-  Result := 0.0;
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    Result := (ChanSIds[chan].oldvol+0.0)/(MIX_MAX_VOLUME+0.0);
-  end
-  else if e_isMusic(FID) then
-  begin
-    Result := (MusVolume+0.0)/(MIX_MAX_VOLUME+0.0);
-  end;
-end;
-
-procedure TBasicSound.SetVolume(Volume: Single);
-var
-  chan: Integer;
-begin
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    //e_WriteLog(Format('SetVolume: chan=%d; Volume=%f', [chan, Volume]), MSG_WARNING);
-    e_chanSetVol(chan, Volume);
-  end
-  else if e_isMusic(FID) then
-  begin
-    //e_WriteLog(Format('SetVolume: chan=MUSIC; Volume=%f', [Volume]), MSG_WARNING);
-    e_chanSetVol(N_MUSCHAN, Volume);
-  end;
-end;
-
-function TBasicSound.GetPan(): Single;
-var
-  chan: Integer;
-begin
-  Result := 1.0;
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    Result := ChanSIds[chan].pan;
-  end;
-end;
-
-procedure TBasicSound.SetPan(Pan: Single);
-var
-  chan: Integer;
-begin
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    e_chanSetPan(chan, Pan);
-  end;
-end;
-
-function TBasicSound.IsMuted(): Boolean;
-var
-  chan: Integer;
-begin
-  Result := False;
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    Result := ChanSIds[chan].muted;
-  end
-  else if e_isMusic(FID) then
-  begin
-    Result := SoundMuted;
-  end;
-end;
-
-procedure TBasicSound.Mute(Enable: Boolean);
-var
-  chan: Integer;
-begin
-  if e_isSound(FID) then
-  begin
-    chan := Channel;
-    if chan < 0 then Exit;
-    if ChanSIds[chan].muted <> Enable then
-    begin
-      //e_WriteLog(Format('muting sound for channel %d', [cnan]), MSG_WARNING);
-      ChanSIds[chan].muted := Enable;
-      if ChanSIds[chan].muted then Mix_Volume(chan, 0) else Mix_Volume(chan, ChanSIds[chan].oldvol);
-    end;
-  end
-  else if e_isMusic(FID) then
-  begin
-    if Enable then Mix_VolumeMusic(0) else Mix_VolumeMusic(MusVolume);
-  end;
-end;
-
-//TODO
-function TBasicSound.GetPosition(): DWORD;
-begin
-  Result := 0;
-{
-  if FChanNum < 0 then Exit;
-  res := FMOD_Channel_GetPosition(FChanNum, FPosition, FMOD_TIMEUNIT_MS);
-  if res <> FMOD_OK then
-  begin
-    Exit;
-  end;
-  Result := FPosition;
-}
-end;
-
-//TODO
-procedure TBasicSound.SetPosition(aPos: DWORD);
-begin
-  FPosition := aPos;
-{
-  if FChanNum < 0 then Exit;
-  res := FMOD_Channel_SetPosition(FChanNum, FPosition, FMOD_TIMEUNIT_MS);
-  if res <> FMOD_OK then
-  begin
-  end;
-}
-end;
-
-//TODO
-procedure TBasicSound.SetPriority(priority: Integer);
-begin
-{
-  if (FChanNum <> nil) and (FPriority <> priority) and
-     (priority >= 0) and (priority <= 256) then
-  begin
-    FPriority := priority;
-    res := FMOD_Channel_SetPriority(FChanNum, priority);
-    if res <> FMOD_OK then
-    begin
-    end;
-  end;
-}
-end;
-
-end.
+{$IF DEFINED(USE_SDLMIXER)}
+  {$I e_sound_sdl.inc}
+{$ELSEIF DEFINED(USE_OPENAL)}
+  {$I e_sound_al.inc}
+{$ELSEIF DEFINED(USE_FMOD)}
+  {$I e_sound_fmod.inc}
+{$ELSEIF DEFINED(USE_SOUNDSTUB)}
+  {$I e_sound_stub.inc}
+{$ELSE}
+  {$ERROR e_sound driver not implemented?}
+{$ENDIF}