118 lines
2.9 KiB
C++
118 lines
2.9 KiB
C++
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// soundmgr.hxx -- Sound effect management class
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//
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// Sound manager initially written by David Findlay
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// <david_j_findlay@yahoo.com.au> 2001
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//
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// C++-ified by Curtis Olson, started March 2001.
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//
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// Copyright (C) 2001 Curtis L. Olson - curt@flightgear.org
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#ifndef _SOUNDMGR_HXX
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#define _SOUNDMGR_HXX
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <simgear/compiler.h>
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#include STL_STRING
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#include <map>
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#include <plib/sl.h>
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#include <plib/sm.h>
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FG_USING_STD(map);
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FG_USING_STD(string);
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// manages everything we need to know for an individual sound sample
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class FGSimpleSound {
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slSample *sample;
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slEnvelope *pitch_envelope;
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slEnvelope *volume_envelope;
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double pitch;
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double volume;
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public:
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FGSimpleSound( string file );
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FGSimpleSound( unsigned char *buffer, int len );
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~FGSimpleSound();
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inline double get_pitch() const { return pitch; }
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inline void set_pitch( double p ) {
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pitch = p;
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pitch_envelope->setStep( 0, 0.01, pitch );
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}
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inline double get_volume() const { return volume; }
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inline void set_volume( double v ) {
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volume = v;
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volume_envelope->setStep( 0, 0.01, volume );
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}
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inline slSample *get_sample() { return sample; }
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inline slEnvelope *get_pitch_envelope() { return pitch_envelope; }
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inline slEnvelope *get_volume_envelope() { return volume_envelope; }
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};
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typedef map < string, FGSimpleSound * > sound_map;
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typedef sound_map::iterator sound_map_iterator;
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typedef sound_map::const_iterator const_sound_map_iterator;
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class FGSoundMgr {
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slScheduler *audio_sched;
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smMixer *audio_mixer;
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sound_map sounds;
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public:
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FGSoundMgr();
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~FGSoundMgr();
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// initialize the sound manager
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bool init();
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// run the audio scheduler
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bool update();
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// is audio working?
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inline bool is_working() const { return !audio_sched->not_working(); }
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// add a sound effect, return the index of the sound
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bool add( FGSimpleSound *sound, const string& refname );
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// tell the scheduler to play the indexed sample in a continuous
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// loop
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bool play_looped( const string& refname );
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// tell the scheduler to play the indexed sample once
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bool play_once( const string& refname );
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};
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#endif // _SOUNDMGR_HXX
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