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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
27 # include <simgear_config.h>
30 #include <simgear/compiler.h>
32 #if defined(__APPLE__)
33 # include <OpenAL/al.h>
34 # include <OpenAL/alc.h>
40 #if defined (__APPLE__)
42 # if ( __GNUC__ >= 3 ) && ( __GNUC_MINOR__ >= 3 )
44 inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
46 // any C++ header file undefines isinf and isnan
47 // so this should be included before <iostream>
48 // the functions are STILL in libm (libSystem on mac os x)
49 extern "C" int isnan (double);
50 extern "C" int isinf (double);
53 // inline int (isinf)(double r) { return isinf(r); }
54 // inline int (isnan)(double r) { return isnan(r); }
58 #if defined (__FreeBSD__)
59 # if __FreeBSD_version < 500000
61 inline int isnan(double r) { return !(r <= 0 || r >= 0); }
66 #if defined (__CYGWIN__)
73 #include <simgear/debug/logstream.hxx>
74 #include <simgear/misc/sg_path.hxx>
76 #include "soundmgr_openal.hxx"
78 #if defined(__MINGW32__)
79 #define isnan(x) _isnan(x)
87 SGSoundMgr::SGSoundMgr() {
89 SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
92 #if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
93 if (!alutInit(NULL, NULL))
95 ALenum error = alutGetError ();
96 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
97 SG_LOG( SG_GENERAL, SG_ALERT, " "+string(alutGetErrorString(error)));
105 context = alcGetCurrentContext();
108 if ( (dev = alcOpenDevice( NULL )) != NULL
109 && ( context = alcCreateContext( dev, NULL )) != NULL ) {
111 alcMakeContextCurrent( context );
115 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
120 listener_pos[0] = 0.0;
121 listener_pos[1] = 0.0;
122 listener_pos[2] = 0.0;
124 listener_vel[0] = 0.0;
125 listener_vel[1] = 0.0;
126 listener_vel[2] = 0.0;
128 listener_ori[0] = 0.0;
129 listener_ori[1] = 0.0;
130 listener_ori[2] = -1.0;
131 listener_ori[3] = 0.0;
132 listener_ori[4] = 1.0;
133 listener_ori[5] = 0.0;
135 alListenerf( AL_GAIN, 0.0f );
136 alListenerfv( AL_POSITION, listener_pos );
137 alListenerfv( AL_VELOCITY, listener_vel );
138 alListenerfv( AL_ORIENTATION, listener_ori );
140 if ( alGetError() != AL_NO_ERROR) {
141 SG_LOG( SG_GENERAL, SG_ALERT,
142 "Oops AL error after audio initialization!" );
145 // exaggerate the ear candy?
146 alDopplerFactor(1.0);
147 alDopplerVelocity(340.0); // speed of sound in meters per second.
152 SGSoundMgr::~SGSoundMgr() {
154 #if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
158 alcDestroyContext( context );
163 // initialize the sound manager
164 void SGSoundMgr::init() {
166 // Remove the samples from the sample manager.
172 void SGSoundMgr::bind ()
178 void SGSoundMgr::unbind ()
184 // run the audio scheduler
185 void SGSoundMgr::update( double dt ) {
193 alcSuspendContext( context );
194 if ( alGetError() != AL_NO_ERROR) {
195 SG_LOG( SG_GENERAL, SG_ALERT,
196 "Oops AL error after soundmgr pause()!" );
203 SGSoundMgr::resume ()
206 alcProcessContext( context );
207 if ( alGetError() != AL_NO_ERROR) {
208 SG_LOG( SG_GENERAL, SG_ALERT,
209 "Oops AL error after soundmgr resume()!" );
215 // add a sound effect, return true if successful
216 bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
218 sample_map_iterator sample_it = samples.find( refname );
219 if ( sample_it != samples.end() ) {
220 // sound already exists
224 samples[refname] = sound;
230 // remove a sound effect, return true if successful
231 bool SGSoundMgr::remove( const string &refname ) {
233 sample_map_iterator sample_it = samples.find( refname );
234 if ( sample_it != samples.end() ) {
235 // first stop the sound from playing (so we don't bomb the
237 samples.erase( sample_it );
239 // cout << "sndmgr: removed -> " << refname << endl;
242 // cout << "sndmgr: failed remove -> " << refname << endl;
248 // return true of the specified sound exists in the sound manager system
249 bool SGSoundMgr::exists( const string &refname ) {
250 sample_map_iterator sample_it = samples.find( refname );
251 if ( sample_it != samples.end() ) {
259 // return a pointer to the SGSoundSample if the specified sound exists
260 // in the sound manager system, otherwise return NULL
261 SGSoundSample *SGSoundMgr::find( const string &refname ) {
262 sample_map_iterator sample_it = samples.find( refname );
263 if ( sample_it != samples.end() ) {
264 return sample_it->second;
271 // tell the scheduler to play the indexed sample in a continuous
273 bool SGSoundMgr::play_looped( const string &refname ) {
274 SGSoundSample *sample;
276 if ( (sample = find( refname )) == NULL ) {
279 sample->play( true );
285 // tell the scheduler to play the indexed sample once
286 bool SGSoundMgr::play_once( const string& refname ) {
287 SGSoundSample *sample;
289 if ( (sample = find( refname )) == NULL ) {
292 sample->play( false );
298 // return true of the specified sound is currently being played
299 bool SGSoundMgr::is_playing( const string& refname ) {
300 SGSoundSample *sample;
302 if ( (sample = find( refname )) == NULL ) {
305 return ( sample->is_playing() );
310 // immediate stop playing the sound
311 bool SGSoundMgr::stop( const string& refname ) {
312 SGSoundSample *sample;
314 if ( (sample = find( refname )) == NULL ) {
323 // set source position of all managed sounds
324 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
325 if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
326 // bail if a bad position is passed in
330 sample_map_iterator sample_current = samples.begin();
331 sample_map_iterator sample_end = samples.end();
332 for ( ; sample_current != sample_end; ++sample_current ) {
333 SGSoundSample *sample = sample_current->second;
334 sample->set_source_pos( pos );
339 // set source velocity of all managed sounds
340 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
341 if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
342 // bail if a bad velocity is passed in
346 sample_map_iterator sample_current = samples.begin();
347 sample_map_iterator sample_end = samples.end();
348 for ( ; sample_current != sample_end; ++sample_current ) {
349 SGSoundSample *sample = sample_current->second;
350 sample->set_source_vel( vel, listener_vel );