LowLevelSound.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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/>.
 *
 */
 
/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */
 
#ifndef HPL_LOWLEVELSOUND_H
#define HPL_LOWLEVELSOUND_H
 
#include "hpl1/engine/math/MathTypes.h"
#include "hpl1/engine/system/SystemTypes.h"
 
#include "hpl1/engine/system/low_level_system.h"
 
namespace hpl {
 
class iSoundData;
class iSoundEnvironment;
// class iSoundFilter;
 
typedef Common::List<iSoundEnvironment *> tSoundEnvList;
typedef tSoundEnvList::iterator tSoundEnvListIt;
 
class iLowLevelSound {
public:
    iLowLevelSound();
    virtual ~iLowLevelSound();
 
    virtual void GetSupportedFormats(tStringList &alstFormats) = 0;
 
    virtual iSoundData *LoadSoundData(const tString &asName, const tString &asFilePath,
                                      const tString &asType, bool abStream, bool abLoopStream) = 0;
 
    virtual void UpdateSound(float afTimeStep) = 0;
 
    virtual void SetListenerAttributes(const cVector3f &avPos, const cVector3f &avVel,
                                       const cVector3f &avForward, const cVector3f &avUp) = 0;
    virtual void SetListenerPosition(const cVector3f &avPos) = 0;
    const cMatrixf &GetListenerMatrix() { return m_mtxListener; }
 
    virtual void SetListenerAttenuation(bool abEnabled) = 0;
 
    virtual void SetSetRolloffFactor(float afFactor) = 0;
 
    virtual void SetVolume(float afVolume) = 0;
 
    cVector3f &GetListenerPosition() { return mvListenerPosition; }
    cVector3f &GetListenerVelocity() { return mvListenerVelocity; }
    cVector3f &GetListenerForward() { return mvListenerForward; }
    cVector3f &GetListenerUp() { return mvListenerUp; }
    bool GetListenerAttenuation() { return mbListenerAttenuation; }
 
    float GetVolume() { return mfVolume; }
 
    // virtual void LogSoundStatus() {}
    virtual void Init(bool abUseHardware, bool abForceGeneric, bool abUseEnvAudio, int alMaxChannels,
                      int alStreamUpdateFreq, bool abUseThreading, bool abUseVoiceManagement,
                      int alMaxMonoSourceHint, int alMaxStereoSourceHint,
                      int alStreamingBufferSize, int alStreamingBufferCount, bool abEnableLowLevelLog, tString asDeviceName) = 0;
 
    bool IsHardwareAccelerated() { return mbHardwareAcc; }
    bool IsEnvAudioAvailable() { return mbEnvAudioEnabled; }
 
    virtual void SetEnvVolume(float afVolume) = 0;
    float GetEnvVolume() { return mfEnvVolume; }
 
    virtual iSoundEnvironment *LoadSoundEnvironment(const tString &asFilePath) = 0;
 
    virtual void SetSoundEnvironment(iSoundEnvironment *apSoundEnv) = 0;
    virtual void FadeSoundEnvironment(iSoundEnvironment *apSourceSoundEnv, iSoundEnvironment *apDestSoundEnv, float afT) = 0;
 
    iSoundEnvironment *GetSoundEnvironmentFromFileName(const tString &asName);
    // void DestroySoundEnvironment( iSoundEnvironment* apSoundEnv);
 
protected:
    float mfVolume;
    float mfEnvVolume;
    bool mbListenerAttenuation;
 
    bool mbHardwareAcc;
    bool mbEnvAudioEnabled;
 
    cVector3f mvListenerUp;
    cVector3f mvListenerForward;
    cVector3f mvListenerRight;
    cVector3f mvListenerPosition;
    cVector3f mvListenerVelocity;
 
    cMatrixf m_mtxListener;
 
    tSoundEnvList mlstSoundEnv;
};
 
} // namespace hpl
 
#endif // HPL_LOWLEVELSOUND_H