source: code/branches/FICN/src/audio/_AudioObject.cc @ 513

/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *
 *
 *   License notice:
 *
 *   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 2
 *   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, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      ...
 *   Co-authors:
 *      ...
 *
 */


#include <iostream>
#include <string>
#include "AudioObject.h"

namespace audio
{
        AudioObject::AudioObject(std::string audioFile)
        {
                audioFile_ = audioFile;
                SourcePos[0]=0;
                SourcePos[1]=0;
                SourcePos[2]=0;

                 SourceVel[0]=0;
                 SourceVel[1]=0;
                 SourceVel[2]=0;

                 ListenerPos[0]=0;
                 ListenerPos[1]=0;
                 ListenerPos[2]=0;

                 ListenerVel[0]=0;
                 ListenerVel[1]=0;
                 ListenerVel[2]=0;

                 ListenerOri[0]=0;
                 ListenerOri[1]=0;
                 ListenerOri[2]=-1;
                 ListenerOri[3]=0;
                 ListenerOri[4]=1;
                 ListenerOri[5]=0;


                // Initialize OpenAL and clear the error bit.

                alutInit(NULL, 0);
                alGetError();

                // Load the wav data.

                if(LoadALData() == AL_FALSE)
                {
                    printf("Error loading sound data.");

                }

                SetListenerValues();
                std::cout << "Play sone ambient background sound";
        }

        AudioObject::~AudioObject()
        {
                KillALData();
        }

        ALboolean AudioObject::LoadALData()
        {
                ALenum format;
                ALsizei size;
                ALvoid* data;
                ALsizei freq;
                ALboolean loop;


                alGenBuffers(1, &Buffer);

                if(alGetError() != AL_NO_ERROR)
                        return AL_FALSE;

                alutLoadWAVFile((ALbyte*)audioFile_.c_str(), &format, &data, &size, &freq, &loop);
                alBufferData(Buffer, format, data, size, freq);
                alutUnloadWAV(format, data, size, freq);

                alGenSources(1, &Source);

                if(alGetError() != AL_NO_ERROR)
                        return AL_FALSE;

                alSourcei (Source, AL_BUFFER,   Buffer   );
                alSourcef (Source, AL_PITCH,    1.0      );
                alSourcef (Source, AL_GAIN,     1.0      );
                alSourcefv(Source, AL_POSITION, SourcePos);
                alSourcefv(Source, AL_VELOCITY, SourceVel);
                alSourcei (Source, AL_LOOPING,  loop     );

                if(alGetError() == AL_NO_ERROR)
                        return AL_TRUE;


                return AL_FALSE;
        }

        void AudioObject::SetListenerValues()
        {
                alListenerfv(AL_POSITION,    ListenerPos);
                alListenerfv(AL_VELOCITY,    ListenerVel);
                alListenerfv(AL_ORIENTATION, ListenerOri);
        }

        void AudioObject::KillALData()
        {
                alDeleteBuffers(1, &Buffer);
                alDeleteSources(1, &Source);
                alutExit();
        }

        void AudioObject::play()
        {
                alSourcePlay(Source);

        }
}