1 // soundmgr.cxx -- 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 - http://www.flightgear.org/~curt
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.
26 #include <simgear/compiler.h>
28 #if defined(__APPLE__)
29 # include <OpenAL/al.h>
30 # include <OpenAL/alc.h>
36 #if defined (__APPLE__)
37 // any C++ header file undefines isinf and isnan
38 // so this should be included before <iostream>
39 inline int (isinf)(double r) { return isinf(r); }
40 inline int (isnan)(double r) { return isnan(r); }
43 #if defined (__FreeBSD__)
44 # if __FreeBSD_version < 500000
46 inline int isnan(double r) { return !(r <= 0 || r >= 0); }
53 #include <simgear/debug/logstream.hxx>
54 #include <simgear/misc/sg_path.hxx>
56 #include "soundmgr_openal.hxx"
58 #if defined(__MINGW32__)
59 #define isnan(x) _isnan(x)
67 SGSoundMgr::SGSoundMgr() {
69 SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
72 if ( (dev = alcOpenDevice( NULL )) != NULL
73 && ( context = alcCreateContext( dev, NULL )) != NULL ) {
75 alcMakeContextCurrent( context );
79 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
82 listener_pos[0] = 0.0;
83 listener_pos[1] = 0.0;
84 listener_pos[2] = 0.0;
86 listener_vel[0] = 0.0;
87 listener_vel[1] = 0.0;
88 listener_vel[2] = 0.0;
90 listener_ori[0] = 0.0;
91 listener_ori[1] = 0.0;
92 listener_ori[2] = -1.0;
93 listener_ori[3] = 0.0;
94 listener_ori[4] = 1.0;
95 listener_ori[5] = 0.0;
97 alListenerf( AL_GAIN, 0.0f );
98 alListenerfv( AL_POSITION, listener_pos );
99 alListenerfv( AL_VELOCITY, listener_vel );
100 alListenerfv( AL_ORIENTATION, listener_ori );
102 if ( alGetError() != AL_NO_ERROR) {
103 SG_LOG( SG_GENERAL, SG_ALERT,
104 "Oops AL error after audio initialization!" );
107 // exaggerate the ear candy?
108 alDopplerFactor(1.0);
109 alDopplerVelocity(340.0); // speed of sound in meters per second.
114 SGSoundMgr::~SGSoundMgr() {
117 alcDestroyContext( context );
119 // Remove the samples from the sample manager.
121 sample_map_iterator sample_current = samples.begin();
122 sample_map_iterator sample_end = samples.end();
123 for ( ; sample_current != sample_end; ++sample_current ) {
124 SGSoundSample *sample = sample_current->second;
130 // initialize the sound manager
131 void SGSoundMgr::init() {
133 // Remove the samples from the sample manager.
135 sample_map_iterator sample_current = samples.begin();
136 sample_map_iterator sample_end = samples.end();
137 for ( ; sample_current != sample_end; ++sample_current ) {
138 SGSoundSample *sample = sample_current->second;
145 void SGSoundMgr::bind ()
151 void SGSoundMgr::unbind ()
157 // run the audio scheduler
158 void SGSoundMgr::update( double dt ) {
166 alcSuspendContext( context );
167 if ( alGetError() != AL_NO_ERROR) {
168 SG_LOG( SG_GENERAL, SG_ALERT,
169 "Oops AL error after soundmgr pause()!" );
176 SGSoundMgr::resume ()
179 alcProcessContext( context );
180 if ( alGetError() != AL_NO_ERROR) {
181 SG_LOG( SG_GENERAL, SG_ALERT,
182 "Oops AL error after soundmgr resume()!" );
188 // add a sound effect, return true if successful
189 bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
191 sample_map_iterator sample_it = samples.find( refname );
192 if ( sample_it != samples.end() ) {
193 // sound already exists
197 samples[refname] = sound;
203 // remove a sound effect, return true if successful
204 bool SGSoundMgr::remove( const string &refname ) {
206 sample_map_iterator sample_it = samples.find( refname );
207 if ( sample_it != samples.end() ) {
208 // first stop the sound from playing (so we don't bomb the
210 SGSoundSample *sample = sample_it->second;
212 samples.erase( sample_it );
214 // cout << "sndmgr: removed -> " << refname << endl;
217 // cout << "sndmgr: failed remove -> " << refname << endl;
223 // return true of the specified sound exists in the sound manager system
224 bool SGSoundMgr::exists( const string &refname ) {
225 sample_map_iterator sample_it = samples.find( refname );
226 if ( sample_it != samples.end() ) {
234 // return a pointer to the SGSoundSample if the specified sound exists
235 // in the sound manager system, otherwise return NULL
236 SGSoundSample *SGSoundMgr::find( const string &refname ) {
237 sample_map_iterator sample_it = samples.find( refname );
238 if ( sample_it != samples.end() ) {
239 return sample_it->second;
246 // tell the scheduler to play the indexed sample in a continuous
248 bool SGSoundMgr::play_looped( const string &refname ) {
249 SGSoundSample *sample;
251 if ( (sample = find( refname )) == NULL ) {
254 sample->play( true );
260 // tell the scheduler to play the indexed sample once
261 bool SGSoundMgr::play_once( const string& refname ) {
262 SGSoundSample *sample;
264 if ( (sample = find( refname )) == NULL ) {
267 sample->play( false );
273 // return true of the specified sound is currently being played
274 bool SGSoundMgr::is_playing( const string& refname ) {
275 SGSoundSample *sample;
277 if ( (sample = find( refname )) == NULL ) {
280 return ( sample->is_playing() );
285 // immediate stop playing the sound
286 bool SGSoundMgr::stop( const string& refname ) {
287 SGSoundSample *sample;
289 if ( (sample = find( refname )) == NULL ) {
298 // set source position of all managed sounds
299 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
300 if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
301 // bail if a bad position is passed in
305 sample_map_iterator sample_current = samples.begin();
306 sample_map_iterator sample_end = samples.end();
307 for ( ; sample_current != sample_end; ++sample_current ) {
308 SGSoundSample *sample = sample_current->second;
309 sample->set_source_pos( pos );
314 // set source velocity of all managed sounds
315 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
316 if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
317 // bail if a bad velocity is passed in
321 sample_map_iterator sample_current = samples.begin();
322 sample_map_iterator sample_end = samples.end();
323 for ( ; sample_current != sample_end; ++sample_current ) {
324 SGSoundSample *sample = sample_current->second;
325 sample->set_source_vel( vel );