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/alut.h>
31 # include <OpenAL/alc.h>
38 #if defined (__APPLE__)
39 // any C++ header file undefines isinf and isnan
40 // so this should be included before <iostream>
41 inline int (isinf)(double r) { return isinf(r); }
42 inline int (isnan)(double r) { return isnan(r); }
45 #if defined(__MINGW32__)
46 #define isnan(x) _isnan(x)
49 #if defined (__FreeBSD__)
50 inline int isnan(double r) { return !(r < 0 || r > 0); }
55 #include <simgear/debug/logstream.hxx>
56 #include <simgear/misc/sg_path.hxx>
58 #include "soundmgr_openal.hxx"
66 SGSoundMgr::SGSoundMgr() {
68 SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
73 if ( alGetError() == AL_NO_ERROR) {
77 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
80 listener_pos[0] = 0.0;
81 listener_pos[1] = 0.0;
82 listener_pos[2] = 0.0;
84 listener_vel[0] = 0.0;
85 listener_vel[1] = 0.0;
86 listener_vel[2] = 0.0;
88 listener_ori[0] = 0.0;
89 listener_ori[1] = 0.0;
90 listener_ori[2] = -1.0;
91 listener_ori[3] = 0.0;
92 listener_ori[4] = 1.0;
93 listener_ori[5] = 0.0;
95 alListenerfv( AL_POSITION, listener_pos );
96 alListenerfv( AL_VELOCITY, listener_vel );
97 alListenerfv( AL_ORIENTATION, listener_ori );
99 if ( alGetError() != AL_NO_ERROR) {
100 SG_LOG( SG_GENERAL, SG_ALERT,
101 "Oops AL error after audio initialization!" );
104 // exaggerate the ear candy?
105 alDopplerFactor(1.0);
106 alDopplerVelocity(340.0); // speed of sound in meters per second.
111 SGSoundMgr::~SGSoundMgr() {
114 // Remove the samples from the sample manager.
116 sample_map_iterator sample_current = samples.begin();
117 sample_map_iterator sample_end = samples.end();
118 for ( ; sample_current != sample_end; ++sample_current ) {
119 SGSoundSample *sample = sample_current->second;
127 // initialize the sound manager
128 void SGSoundMgr::init() {
130 // Remove the samples from the sample manager.
132 sample_map_iterator sample_current = samples.begin();
133 sample_map_iterator sample_end = samples.end();
134 for ( ; sample_current != sample_end; ++sample_current ) {
135 SGSoundSample *sample = sample_current->second;
142 void SGSoundMgr::bind ()
148 void SGSoundMgr::unbind ()
154 // run the audio scheduler
155 void SGSoundMgr::update( double dt ) {
162 ALCcontext *pCurContext = alcGetCurrentContext();
163 alcSuspendContext( pCurContext );
164 if ( alGetError() != AL_NO_ERROR) {
165 SG_LOG( SG_GENERAL, SG_ALERT,
166 "Oops AL error after soundmgr pause()!" );
172 SGSoundMgr::resume ()
174 ALCcontext *pCurContext = alcGetCurrentContext();
175 alcProcessContext( pCurContext );
176 if ( alGetError() != AL_NO_ERROR) {
177 SG_LOG( SG_GENERAL, SG_ALERT,
178 "Oops AL error after soundmgr resume()!" );
183 // add a sound effect, return true if successful
184 bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
186 sample_map_iterator sample_it = samples.find( refname );
187 if ( sample_it != samples.end() ) {
188 // sound already exists
192 samples[refname] = sound;
198 // remove a sound effect, return true if successful
199 bool SGSoundMgr::remove( const string &refname ) {
201 sample_map_iterator sample_it = samples.find( refname );
202 if ( sample_it != samples.end() ) {
203 // first stop the sound from playing (so we don't bomb the
205 SGSoundSample *sample = sample_it->second;
207 samples.erase( sample_it );
209 // cout << "sndmgr: removed -> " << refname << endl;
212 // cout << "sndmgr: failed remove -> " << refname << endl;
218 // return true of the specified sound exists in the sound manager system
219 bool SGSoundMgr::exists( const string &refname ) {
220 sample_map_iterator sample_it = samples.find( refname );
221 if ( sample_it != samples.end() ) {
229 // return a pointer to the SGSoundSample if the specified sound exists
230 // in the sound manager system, otherwise return NULL
231 SGSoundSample *SGSoundMgr::find( const string &refname ) {
232 sample_map_iterator sample_it = samples.find( refname );
233 if ( sample_it != samples.end() ) {
234 return sample_it->second;
241 // tell the scheduler to play the indexed sample in a continuous
243 bool SGSoundMgr::play_looped( const string &refname ) {
244 SGSoundSample *sample;
246 if ( (sample = find( refname )) == NULL ) {
249 sample->play( true );
255 // tell the scheduler to play the indexed sample once
256 bool SGSoundMgr::play_once( const string& refname ) {
257 SGSoundSample *sample;
259 if ( (sample = find( refname )) == NULL ) {
262 sample->play( false );
268 // return true of the specified sound is currently being played
269 bool SGSoundMgr::is_playing( const string& refname ) {
270 SGSoundSample *sample;
272 if ( (sample = find( refname )) == NULL ) {
275 return ( sample->is_playing() );
280 // immediate stop playing the sound
281 bool SGSoundMgr::stop( const string& refname ) {
282 SGSoundSample *sample;
284 if ( (sample = find( refname )) == NULL ) {
293 // set source position of all managed sounds
294 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
295 if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
296 // bail if a bad position is passed in
300 sample_map_iterator sample_current = samples.begin();
301 sample_map_iterator sample_end = samples.end();
302 for ( ; sample_current != sample_end; ++sample_current ) {
303 SGSoundSample *sample = sample_current->second;
304 sample->set_source_pos( pos );
309 // set source velocity of all managed sounds
310 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
311 if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
312 // bail if a bad velocity is passed in
316 sample_map_iterator sample_current = samples.begin();
317 sample_map_iterator sample_end = samples.end();
318 for ( ; sample_current != sample_end; ++sample_current ) {
319 SGSoundSample *sample = sample_current->second;
320 sample->set_source_vel( vel );