mipopenaloutput.h

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/*
    
  This file is a part of EMIPLIB, the EDM Media over IP Library.
  
  Copyright (C) 2006-2011  Hasselt University - Expertise Centre for
                      Digital Media (EDM) (http://www.edm.uhasselt.be)

  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; either
  version 2.1 of the License, or (at your option) any later version.

  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 St, Fifth Floor, Boston, MA  02110-1301  
  USA

*/

#ifndef MIPOPENALOUTPUT_H

#define MIPOPENALOUTPUT_H

#include "mipconfig.h"

#ifdef MIPCONFIG_SUPPORT_OPENAL

#include "mipcomponent.h"
#include <al.h>
#include <alc.h>
#include <map>

class EMIPLIB_IMPORTEXPORT MIPOpenALOutput : public MIPComponent
{
public:
        MIPOpenALOutput();
        virtual ~MIPOpenALOutput();

        bool open(int sampRate, int channels, int precision = 16);

        bool close();

        bool setSourcePosition(uint64_t sourceID, real_t pos[3]);

        bool setOwnPosition(real_t pos[3], real_t frontDirection[3], real_t upDirection[3]);

        bool push(const MIPComponentChain &chain, int64_t iteration, MIPMessage *pMsg);
        bool pull(const MIPComponentChain &chain, int64_t iteration, MIPMessage **pMsg);

private:
        bool getSource(uint64_t sourceID, ALuint *pSource);
        bool enqueueData(ALuint source, void *pData, size_t size);
        static ALenum calcFormat(int channels, int precision);

private:
        bool m_init;

        int m_sampRate;
        int m_channels;

        ALenum m_format;
        ALCdevice  *m_pDevice;
        ALCcontext *m_pContext;
        
        std::map<uint64_t, ALuint> m_sources;
};

#endif // MIPCONFIG_SUPPORT_OPENAL

#endif // MIPOPENALOUTPUT_H