/** 
 * @file listener.h
 * @brief Description of LISTENER base class abstracting the audio support.
 *
 * $LicenseInfo:firstyear=2000&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LISTENER_H
#define LL_LISTENER_H

#include "v3math.h"

class LLListener 
{
 private:
 protected:
	LLVector3 mPosition;
	LLVector3 mVelocity;
	LLVector3 mListenAt;
	LLVector3 mListenUp;

 public:

 private:
 protected:
 public:  
	LLListener();
	virtual ~LLListener(); 

	virtual void set(const LLVector3& pos, const LLVector3& vel, const LLVector3& up, const LLVector3& at);

	virtual void setPosition(const LLVector3& pos);
	virtual void setVelocity(const LLVector3& vel);

	virtual void orient(const LLVector3& up, const LLVector3& at);
	virtual void translate(const LLVector3& offset);

	virtual void setDopplerFactor(F32 factor);
	virtual void setRolloffFactor(F32 factor);

	virtual LLVector3 getPosition();
	virtual LLVector3 getAt();
	virtual LLVector3 getUp();

	virtual F32 getDopplerFactor();
	virtual F32 getRolloffFactor();

	virtual void commitDeferredChanges();
};

#endif

