diff --git a/src/engine/e_sound.pas b/src/engine/e_sound.pas
index 76f9929f729f4f07e424bae5bdbe0aef4524bef9..790dc0a65d41a6cadbacadce2a7055f9b2648602 100644 (file)
--- a/src/engine/e_sound.pas
+++ b/src/engine/e_sound.pas
+(* 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}