1 // soundmgr.hxx -- Sound effect management class
3 // Sound manager initially written by David Findlay
4 // <david_j_findlay@yahoo.com.au> 2001
6 // C++-ified by Curtis Olson, started March 2001.
8 // Copyright (C) 2001 Curtis L. Olson - curt@flightgear.org
10 // This program is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU General Public License as
12 // published by the Free Software Foundation; either version 2 of the
13 // License, or (at your option) any later version.
15 // This program is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // General Public License for more details.
20 // You should have received a copy of the GNU General Public License
21 // along with this program; if not, write to the Free Software
22 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 * Provides a sound manager class to keep track of
29 * multiple sounds and manage playing them with different effects and
33 #ifndef _SG_SOUNDMGR_HXX
34 #define _SG_SOUNDMGR_HXX 1
37 # error This library requires C++
40 #include <simgear/compiler.h>
41 #include <simgear/timing/timestamp.hxx>
54 * manages everything we need to know for an individual sound sample
61 slEnvelope *pitch_envelope;
62 slEnvelope *volume_envelope;
68 SGSimpleSound( const char *path, const char *file = NULL );
69 SGSimpleSound( unsigned char *buffer, int len );
72 void play( slScheduler *sched, bool looped );
73 void stop( slScheduler *sched, bool quick = true );
75 inline void play_once( slScheduler *sched ) { play( sched, false); }
76 inline void play_looped( slScheduler *sched ) { play( sched, true); }
77 inline bool is_playing( ) {
78 return ( sample->getPlayCount() > 0 );
81 inline double get_pitch() const { return pitch; }
82 inline void set_pitch( double p ) {
84 pitch_envelope->setStep( 0, 0.01, pitch );
86 inline double get_volume() const { return volume; }
87 inline void set_volume( double v ) {
89 volume_envelope->setStep( 0, 0.01, volume );
92 inline slSample *get_sample() { return sample; }
93 inline slEnvelope *get_pitch_envelope() { return pitch_envelope; }
94 inline slEnvelope *get_volume_envelope() { return volume_envelope; }
103 typedef map < string, sample_ref * > sample_map;
104 typedef sample_map::iterator sample_map_iterator;
105 typedef sample_map::const_iterator const_sample_map_iterator;
107 typedef map < string, SGSimpleSound * > sound_map;
108 typedef sound_map::iterator sound_map_iterator;
109 typedef sound_map::const_iterator const_sound_map_iterator;
113 * Manage a collection of SGSimpleSound instances
118 slScheduler *audio_sched;
119 smMixer *audio_mixer;
133 * (re) initialize the sound manager.
139 * Bind properties for the sound manager.
145 * Unbind properties for the sound manager.
151 * Run the audio scheduler.
153 void update(double dt);
171 inline bool is_working() const { return !audio_sched->notWorking(); }
174 * reinitialize the sound manager
176 inline void reinit() { init(); }
179 * add a sound effect, return true if successful
181 bool add( SGSimpleSound *sound, const string& refname);
184 * add a sound file, return the sample if successful, else return NULL
186 SGSimpleSound *add( const string& refname,
187 const char *path, const char *file = NULL );
190 * remove a sound effect, return true if successful
192 bool remove( const string& refname );
195 * return true of the specified sound exists in the sound manager system
197 bool exists( const string& refname );
200 * return a pointer to the SGSimpleSound if the specified sound
201 * exists in the sound manager system, otherwise return NULL
203 SGSimpleSound *find( const string& refname );
206 * tell the scheduler to play the indexed sample in a continuous
209 bool play_looped( const string& refname );
212 * tell the scheduler to play the indexed sample once
214 bool play_once( const string& refname );
217 * return true of the specified sound is currently being played
219 bool is_playing( const string& refname );
222 * immediate stop playing the sound
224 bool stop( const string& refname );
227 * return the audio scheduler
229 inline slScheduler *get_scheduler( ) { return audio_sched; };
233 #endif // _SG_SOUNDMGR_HXX