/**
 * @file audioengine_openal.cpp
 * @brief implementation of audio engine using OpenAL
 * support as a OpenAL 3D implementation
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

#include "linden_common.h"
#include "llaudioengine.h"

#include "lllistener_openal.h"

LLListener_OpenAL::LLListener_OpenAL()
	: LLListener(),
	mRolloffFactor(1.f)
{
}

LLListener_OpenAL::~LLListener_OpenAL()
{
}

void LLListener_OpenAL::translate(const LLVector3& offset)
{
	//LL_INFOS() << "LLListener_OpenAL::translate() : " << offset << LL_ENDL;
	LLListener::translate(offset);
}

void LLListener_OpenAL::setPosition(const LLVector3& pos)
{
	//LL_INFOS() << "LLListener_OpenAL::setPosition() : " << pos << LL_ENDL;
	LLListener::setPosition(pos);
}

void LLListener_OpenAL::setVelocity(const LLVector3& vel)
{
	LLListener::setVelocity(vel);
}

void LLListener_OpenAL::orient(const LLVector3& up, const LLVector3& at)
{
	//LL_INFOS() << "LLListener_OpenAL::orient() up: " << up << " at: " << at << LL_ENDL;
	LLListener::orient(up, at);
}

void LLListener_OpenAL::commitDeferredChanges()
{
	ALfloat orientation[] = {
		mListenAt.mV[0],
		mListenAt.mV[1],
		mListenAt.mV[2],
		mListenUp.mV[0],
		mListenUp.mV[1],
		mListenUp.mV[2],
	};

	ALfloat velocity[3] = {
		mVelocity.mV[0],
		mVelocity.mV[1],
		mVelocity.mV[2],
	};

	alListenerfv(AL_ORIENTATION, orientation);
	alListenerfv(AL_POSITION, mPosition.mV);
	alListenerfv(AL_VELOCITY, velocity);
}

void LLListener_OpenAL::setDopplerFactor(F32 factor)
{
	//LL_INFOS() << "LLListener_OpenAL::setDopplerFactor() : " << factor << LL_ENDL;
	alDopplerFactor(factor);
}

F32 LLListener_OpenAL::getDopplerFactor()
{
	ALfloat factor;
	factor = alGetFloat(AL_DOPPLER_FACTOR);
	//LL_INFOS() << "LLListener_OpenAL::getDopplerFactor() : " << factor << LL_ENDL;
	return factor;
}


void LLListener_OpenAL::setRolloffFactor(F32 factor)
{
	mRolloffFactor = factor;
}

F32 LLListener_OpenAL::getRolloffFactor()
{
	return mRolloffFactor;
}


