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); }
68 #include <simgear/debug/logstream.hxx>
69 #include <simgear/misc/sg_path.hxx>
71 #include "soundmgr_openal.hxx"
73 #if defined(__MINGW32__)
74 #define isnan(x) _isnan(x)
82 SGSoundMgr::SGSoundMgr() {
84 SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
87 #if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
88 if (!alutInit(NULL, NULL))
90 ALenum error = alutGetError ();
91 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
92 SG_LOG( SG_GENERAL, SG_ALERT, " "+string(alutGetErrorString(error)));
95 context = alcGetCurrentContext();
97 if ( (dev = alcOpenDevice( NULL )) != NULL
98 && ( context = alcCreateContext( dev, NULL )) != NULL ) {
100 alcMakeContextCurrent( context );
104 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
108 listener_pos[0] = 0.0;
109 listener_pos[1] = 0.0;
110 listener_pos[2] = 0.0;
112 listener_vel[0] = 0.0;
113 listener_vel[1] = 0.0;
114 listener_vel[2] = 0.0;
116 listener_ori[0] = 0.0;
117 listener_ori[1] = 0.0;
118 listener_ori[2] = -1.0;
119 listener_ori[3] = 0.0;
120 listener_ori[4] = 1.0;
121 listener_ori[5] = 0.0;
123 alListenerf( AL_GAIN, 0.0f );
124 alListenerfv( AL_POSITION, listener_pos );
125 alListenerfv( AL_VELOCITY, listener_vel );
126 alListenerfv( AL_ORIENTATION, listener_ori );
128 if ( alGetError() != AL_NO_ERROR) {
129 SG_LOG( SG_GENERAL, SG_ALERT,
130 "Oops AL error after audio initialization!" );
133 // exaggerate the ear candy?
134 alDopplerFactor(1.0);
135 alDopplerVelocity(340.0); // speed of sound in meters per second.
140 SGSoundMgr::~SGSoundMgr() {
142 #if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
146 alcDestroyContext( context );
151 // initialize the sound manager
152 void SGSoundMgr::init() {
154 // Remove the samples from the sample manager.
160 void SGSoundMgr::bind ()
166 void SGSoundMgr::unbind ()
172 // run the audio scheduler
173 void SGSoundMgr::update( double dt ) {
181 alcSuspendContext( context );
182 if ( alGetError() != AL_NO_ERROR) {
183 SG_LOG( SG_GENERAL, SG_ALERT,
184 "Oops AL error after soundmgr pause()!" );
191 SGSoundMgr::resume ()
194 alcProcessContext( context );
195 if ( alGetError() != AL_NO_ERROR) {
196 SG_LOG( SG_GENERAL, SG_ALERT,
197 "Oops AL error after soundmgr resume()!" );
203 // add a sound effect, return true if successful
204 bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
206 sample_map_iterator sample_it = samples.find( refname );
207 if ( sample_it != samples.end() ) {
208 // sound already exists
212 samples[refname] = sound;
218 // remove a sound effect, return true if successful
219 bool SGSoundMgr::remove( const string &refname ) {
221 sample_map_iterator sample_it = samples.find( refname );
222 if ( sample_it != samples.end() ) {
223 // first stop the sound from playing (so we don't bomb the
225 samples.erase( sample_it );
227 // cout << "sndmgr: removed -> " << refname << endl;
230 // cout << "sndmgr: failed remove -> " << refname << endl;
236 // return true of the specified sound exists in the sound manager system
237 bool SGSoundMgr::exists( const string &refname ) {
238 sample_map_iterator sample_it = samples.find( refname );
239 if ( sample_it != samples.end() ) {
247 // return a pointer to the SGSoundSample if the specified sound exists
248 // in the sound manager system, otherwise return NULL
249 SGSoundSample *SGSoundMgr::find( const string &refname ) {
250 sample_map_iterator sample_it = samples.find( refname );
251 if ( sample_it != samples.end() ) {
252 return sample_it->second;
259 // tell the scheduler to play the indexed sample in a continuous
261 bool SGSoundMgr::play_looped( const string &refname ) {
262 SGSoundSample *sample;
264 if ( (sample = find( refname )) == NULL ) {
267 sample->play( true );
273 // tell the scheduler to play the indexed sample once
274 bool SGSoundMgr::play_once( const string& refname ) {
275 SGSoundSample *sample;
277 if ( (sample = find( refname )) == NULL ) {
280 sample->play( false );
286 // return true of the specified sound is currently being played
287 bool SGSoundMgr::is_playing( const string& refname ) {
288 SGSoundSample *sample;
290 if ( (sample = find( refname )) == NULL ) {
293 return ( sample->is_playing() );
298 // immediate stop playing the sound
299 bool SGSoundMgr::stop( const string& refname ) {
300 SGSoundSample *sample;
302 if ( (sample = find( refname )) == NULL ) {
311 // set source position of all managed sounds
312 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
313 if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
314 // bail if a bad position is passed in
318 sample_map_iterator sample_current = samples.begin();
319 sample_map_iterator sample_end = samples.end();
320 for ( ; sample_current != sample_end; ++sample_current ) {
321 SGSoundSample *sample = sample_current->second;
322 sample->set_source_pos( pos );
327 // set source velocity of all managed sounds
328 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
329 if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
330 // bail if a bad velocity is passed in
334 sample_map_iterator sample_current = samples.begin();
335 sample_map_iterator sample_end = samples.end();
336 for ( ; sample_current != sample_end; ++sample_current ) {
337 SGSoundSample *sample = sample_current->second;
338 sample->set_source_vel( vel );