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 (__FreeBSD__)
46 # if __FreeBSD_version < 500000
48 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"
60 #if defined(__MINGW32__)
61 #define isnan(x) _isnan(x)
69 SGSoundMgr::SGSoundMgr() {
71 SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
77 if ( alGetError() == AL_NO_ERROR) {
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() {
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 ) {
165 ALCcontext *pCurContext = alcGetCurrentContext();
166 alcSuspendContext( pCurContext );
167 if ( alGetError() != AL_NO_ERROR) {
168 SG_LOG( SG_GENERAL, SG_ALERT,
169 "Oops AL error after soundmgr pause()!" );
175 SGSoundMgr::resume ()
177 ALCcontext *pCurContext = alcGetCurrentContext();
178 alcProcessContext( pCurContext );
179 if ( alGetError() != AL_NO_ERROR) {
180 SG_LOG( SG_GENERAL, SG_ALERT,
181 "Oops AL error after soundmgr resume()!" );
186 // add a sound effect, return true if successful
187 bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
189 sample_map_iterator sample_it = samples.find( refname );
190 if ( sample_it != samples.end() ) {
191 // sound already exists
195 samples[refname] = sound;
201 // remove a sound effect, return true if successful
202 bool SGSoundMgr::remove( const string &refname ) {
204 sample_map_iterator sample_it = samples.find( refname );
205 if ( sample_it != samples.end() ) {
206 // first stop the sound from playing (so we don't bomb the
208 SGSoundSample *sample = sample_it->second;
210 samples.erase( sample_it );
212 // cout << "sndmgr: removed -> " << refname << endl;
215 // cout << "sndmgr: failed remove -> " << refname << endl;
221 // return true of the specified sound exists in the sound manager system
222 bool SGSoundMgr::exists( const string &refname ) {
223 sample_map_iterator sample_it = samples.find( refname );
224 if ( sample_it != samples.end() ) {
232 // return a pointer to the SGSoundSample if the specified sound exists
233 // in the sound manager system, otherwise return NULL
234 SGSoundSample *SGSoundMgr::find( const string &refname ) {
235 sample_map_iterator sample_it = samples.find( refname );
236 if ( sample_it != samples.end() ) {
237 return sample_it->second;
244 // tell the scheduler to play the indexed sample in a continuous
246 bool SGSoundMgr::play_looped( const string &refname ) {
247 SGSoundSample *sample;
249 if ( (sample = find( refname )) == NULL ) {
252 sample->play( true );
258 // tell the scheduler to play the indexed sample once
259 bool SGSoundMgr::play_once( const string& refname ) {
260 SGSoundSample *sample;
262 if ( (sample = find( refname )) == NULL ) {
265 sample->play( false );
271 // return true of the specified sound is currently being played
272 bool SGSoundMgr::is_playing( const string& refname ) {
273 SGSoundSample *sample;
275 if ( (sample = find( refname )) == NULL ) {
278 return ( sample->is_playing() );
283 // immediate stop playing the sound
284 bool SGSoundMgr::stop( const string& refname ) {
285 SGSoundSample *sample;
287 if ( (sample = find( refname )) == NULL ) {
296 // set source position of all managed sounds
297 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
298 if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
299 // bail if a bad position is passed in
303 sample_map_iterator sample_current = samples.begin();
304 sample_map_iterator sample_end = samples.end();
305 for ( ; sample_current != sample_end; ++sample_current ) {
306 SGSoundSample *sample = sample_current->second;
307 sample->set_source_pos( pos );
312 // set source velocity of all managed sounds
313 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
314 if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
315 // bail if a bad velocity is passed in
319 sample_map_iterator sample_current = samples.begin();
320 sample_map_iterator sample_end = samples.end();
321 for ( ; sample_current != sample_end; ++sample_current ) {
322 SGSoundSample *sample = sample_current->second;
323 sample->set_source_vel( vel );