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 );
76 if ( (dev != NULL) && (context != NULL) ) {
78 alcMakeContextCurrent( context );
81 SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
84 listener_pos[0] = 0.0;
85 listener_pos[1] = 0.0;
86 listener_pos[2] = 0.0;
88 listener_vel[0] = 0.0;
89 listener_vel[1] = 0.0;
90 listener_vel[2] = 0.0;
92 listener_ori[0] = 0.0;
93 listener_ori[1] = 0.0;
94 listener_ori[2] = -1.0;
95 listener_ori[3] = 0.0;
96 listener_ori[4] = 1.0;
97 listener_ori[5] = 0.0;
99 alListenerf( AL_GAIN, 0.0f );
100 alListenerfv( AL_POSITION, listener_pos );
101 alListenerfv( AL_VELOCITY, listener_vel );
102 alListenerfv( AL_ORIENTATION, listener_ori );
104 if ( alGetError() != AL_NO_ERROR) {
105 SG_LOG( SG_GENERAL, SG_ALERT,
106 "Oops AL error after audio initialization!" );
109 // exaggerate the ear candy?
110 alDopplerFactor(1.0);
111 alDopplerVelocity(340.0); // speed of sound in meters per second.
116 SGSoundMgr::~SGSoundMgr() {
118 alcDestroyContext( context );
120 // Remove the samples from the sample manager.
122 sample_map_iterator sample_current = samples.begin();
123 sample_map_iterator sample_end = samples.end();
124 for ( ; sample_current != sample_end; ++sample_current ) {
125 SGSoundSample *sample = sample_current->second;
131 // initialize the sound manager
132 void SGSoundMgr::init() {
134 // Remove the samples from the sample manager.
136 sample_map_iterator sample_current = samples.begin();
137 sample_map_iterator sample_end = samples.end();
138 for ( ; sample_current != sample_end; ++sample_current ) {
139 SGSoundSample *sample = sample_current->second;
146 void SGSoundMgr::bind ()
152 void SGSoundMgr::unbind ()
158 // run the audio scheduler
159 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()!" );
175 SGSoundMgr::resume ()
177 alcProcessContext( context );
178 if ( alGetError() != AL_NO_ERROR) {
179 SG_LOG( SG_GENERAL, SG_ALERT,
180 "Oops AL error after soundmgr resume()!" );
185 // add a sound effect, return true if successful
186 bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
188 sample_map_iterator sample_it = samples.find( refname );
189 if ( sample_it != samples.end() ) {
190 // sound already exists
194 samples[refname] = sound;
200 // remove a sound effect, return true if successful
201 bool SGSoundMgr::remove( const string &refname ) {
203 sample_map_iterator sample_it = samples.find( refname );
204 if ( sample_it != samples.end() ) {
205 // first stop the sound from playing (so we don't bomb the
207 SGSoundSample *sample = sample_it->second;
209 samples.erase( sample_it );
211 // cout << "sndmgr: removed -> " << refname << endl;
214 // cout << "sndmgr: failed remove -> " << refname << endl;
220 // return true of the specified sound exists in the sound manager system
221 bool SGSoundMgr::exists( const string &refname ) {
222 sample_map_iterator sample_it = samples.find( refname );
223 if ( sample_it != samples.end() ) {
231 // return a pointer to the SGSoundSample if the specified sound exists
232 // in the sound manager system, otherwise return NULL
233 SGSoundSample *SGSoundMgr::find( const string &refname ) {
234 sample_map_iterator sample_it = samples.find( refname );
235 if ( sample_it != samples.end() ) {
236 return sample_it->second;
243 // tell the scheduler to play the indexed sample in a continuous
245 bool SGSoundMgr::play_looped( const string &refname ) {
246 SGSoundSample *sample;
248 if ( (sample = find( refname )) == NULL ) {
251 sample->play( true );
257 // tell the scheduler to play the indexed sample once
258 bool SGSoundMgr::play_once( const string& refname ) {
259 SGSoundSample *sample;
261 if ( (sample = find( refname )) == NULL ) {
264 sample->play( false );
270 // return true of the specified sound is currently being played
271 bool SGSoundMgr::is_playing( const string& refname ) {
272 SGSoundSample *sample;
274 if ( (sample = find( refname )) == NULL ) {
277 return ( sample->is_playing() );
282 // immediate stop playing the sound
283 bool SGSoundMgr::stop( const string& refname ) {
284 SGSoundSample *sample;
286 if ( (sample = find( refname )) == NULL ) {
295 // set source position of all managed sounds
296 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
297 if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
298 // bail if a bad position is passed in
302 sample_map_iterator sample_current = samples.begin();
303 sample_map_iterator sample_end = samples.end();
304 for ( ; sample_current != sample_end; ++sample_current ) {
305 SGSoundSample *sample = sample_current->second;
306 sample->set_source_pos( pos );
311 // set source velocity of all managed sounds
312 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
313 if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
314 // bail if a bad velocity 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_vel( vel );