soundmgr_openal.hxx

// soundmgr.hxx -- Sound effect management class
//
// Sound manager initially written by David Findlay
// <david_j_findlay@yahoo.com.au> 2001
//
// C++-ified by Curtis Olson, started March 2001.
//
// Copyright (C) 2001  Curtis L. Olson - http://www.flightgear.org/~curt
//
// 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.
//
// $Id: soundmgr__openal_8hxx-source.html,v 1.7 2007-12-17 15:37:11 curt Exp $

#ifndef _SG_SOUNDMGR_OPENAL_HXX
#define _SG_SOUNDMGR_OPENAL_HXX 1

#ifndef __cplusplus
# error This library requires C++
#endif

#include <simgear/compiler.h>

#include STL_STRING
#include <map>

#if defined( __APPLE__ )
# include <OpenAL/al.h>
# include <OpenAL/alc.h>
#else
# include <AL/al.h>
# include <AL/alc.h>
#endif

#include "sample_openal.hxx"

SG_USING_STD(map);
SG_USING_STD(string);


typedef map < string, SGSharedPtr<SGSoundSample> > sample_map;
typedef sample_map::iterator sample_map_iterator;
typedef sample_map::const_iterator const_sample_map_iterator;


class SGSoundMgr
{

    ALCdevice *dev;
    ALCcontext *context;

    // Position of the listener.
    ALfloat listener_pos[3];

    // Velocity of the listener.
    ALfloat listener_vel[3];

    // Orientation of the listener. (first 3 elements are "at", second
    // 3 are "up")
    ALfloat listener_ori[6];

    sample_map samples;

    bool working;
    double safety;

public:

    SGSoundMgr();
    ~SGSoundMgr();


    void init();


    void bind();


    void unbind();


    void update(double dt);


    void pause();


    void resume();


    inline bool is_working() const { return working; }

    inline void reinit() { init(); }

    bool add( SGSoundSample *sound, const string& refname);

    bool remove( const string& refname );

    bool exists( const string& refname );

    SGSoundSample *find( const string& refname );

    bool play_looped( const string& refname );

    bool play_once( const string& refname );

    bool is_playing( const string& refname );

    bool stop( const string& refname );

    inline void set_volume( const ALfloat vol ) {
        if ( vol > 0.0 ) {
            alListenerf( AL_GAIN, vol );
        }
    }

    inline void set_listener_pos( ALfloat *pos ) {
        listener_pos[0] = pos[0];
        listener_pos[1] = pos[1];
        listener_pos[2] = pos[2];
        alListenerfv( AL_POSITION, listener_pos );
    }

    inline void set_listener_vel( ALfloat *vel ) {
        listener_vel[0] = vel[0];
        listener_vel[1] = vel[1];
        listener_vel[2] = vel[2];
#ifdef USE_OPEN_AL_DOPPLER
        alListenerfv( AL_VELOCITY, listener_vel );
#endif
    }

    inline void set_listener_orientation( ALfloat *ori ) {
        listener_ori[0] = ori[0];
        listener_ori[1] = ori[1];
        listener_ori[2] = ori[2];
        listener_ori[3] = ori[3];
        listener_ori[4] = ori[4];
        listener_ori[5] = ori[5];
        alListenerfv( AL_ORIENTATION, listener_ori );
    }

    void set_source_pos_all( ALfloat *pos );

    void set_source_vel_all( ALfloat *pos );
};


#endif // _SG_SOUNDMGR_OPENAL_HXX

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