1 // sample_group.cxx -- Manage a group of samples relative to a base position
3 // Written for the new SoundSystem by Erik Hofman, October 2009
5 // Copyright (C) 2009 Erik Hofman <erik@ehofman.com>
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software Foundation,
19 // Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24 # include <simgear_config.h>
27 #include <simgear/compiler.h>
29 #include "soundmgr_openal.hxx"
30 #include "sample_group.hxx"
32 bool isNaN(float *v) {
33 return (isnan(v[0]) || isnan(v[1]) || isnan(v[2]));
36 SGSampleGroup::SGSampleGroup () :
43 _tied_to_listener(false),
44 _velocity(SGVec3d::zeros()),
45 _orientation(SGQuatd::zeros())
50 SGSampleGroup::SGSampleGroup ( SGSoundMgr *smgr, const string &refname ) :
57 _tied_to_listener(false),
58 _velocity(SGVec3d::zeros()),
59 _orientation(SGQuatd::zeros())
61 _smgr->add(this, refname);
65 SGSampleGroup::~SGSampleGroup ()
74 void SGSampleGroup::update( double dt ) {
76 if ( !_active || _pause ) return;
78 testForALError("start of update!!\n");
80 // Delete any OpenAL buffers that might still be in use.
81 unsigned int size = _removed_samples.size();
82 for (unsigned int i=0; i<size; ) {
83 SGSoundSample *sample = _removed_samples[i];
84 ALint result = AL_STOPPED;
86 if ( sample->is_valid_source() ) {
87 int source = sample->get_source();
89 alGetSourcei( source, AL_SOURCE_STATE, &result );
90 if ( sample->is_looping() ) {
91 if ( result != AL_STOPPED ) {
92 alSourceStop( source );
93 alGetSourcei( source, AL_SOURCE_STATE, &result );
96 if ( result == AL_STOPPED ) {
97 sample->no_valid_source();
98 _smgr->release_source( source );
102 if ( result == AL_STOPPED ) {
104 if (( !sample->is_queue() )&&
105 (sample->is_valid_buffer()))
107 _smgr->release_buffer(sample);
109 _removed_samples.erase( _removed_samples.begin()+i );
116 // Update the position and orientation information for all samples.
117 if ( _changed || _smgr->has_changed() ) {
118 update_pos_and_orientation();
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;
127 if ( !sample->is_valid_source() && sample->is_playing() && !sample->test_out_of_range()) {
129 // a request to start playing a sound has been filed.
131 ALuint source = _smgr->request_source();
132 if (alIsSource(source) == AL_TRUE )
134 ALboolean looping = sample->is_looping() ? AL_TRUE : AL_FALSE;
135 if ( sample->is_queue() )
137 sample->set_source( source );
138 update_sample_config( sample );
140 alSourcef( source, AL_ROLLOFF_FACTOR, 0.3 );
141 alSourcei( source, AL_LOOPING, looping );
142 alSourcei( source, AL_SOURCE_RELATIVE, AL_FALSE );
143 alSourcePlay( source );
144 testForALError("sample play");
148 ALuint buffer = _smgr->request_buffer(sample);
149 if (buffer == SGSoundMgr::FAILED_BUFFER ||
150 buffer == SGSoundMgr::NO_BUFFER)
152 _smgr->release_source(source);
156 // start playing the sample
157 buffer = sample->get_buffer();
158 if ( alIsBuffer(buffer) == AL_TRUE )
160 alSourcei( source, AL_BUFFER, buffer );
161 testForALError("assign buffer to source");
163 sample->set_source( source );
164 update_sample_config( sample );
166 alSourcei( source, AL_LOOPING, looping );
167 alSourcef( source, AL_ROLLOFF_FACTOR, 0.3 );
168 alSourcei( source, AL_SOURCE_RELATIVE, AL_FALSE );
169 alSourcePlay( source );
170 testForALError("sample play");
172 SG_LOG( SG_SOUND, SG_ALERT, "No such buffer!");
176 } else if ( sample->is_valid_source() ) {
177 // check if the sound has stopped by itself
179 unsigned int source = sample->get_source();
182 alGetSourcei( source, AL_SOURCE_STATE, &result );
183 if ( result == AL_STOPPED ) {
184 // sample is stopped because it wasn't looping
186 sample->no_valid_source();
187 _smgr->release_source( source );
188 _smgr->release_buffer( sample );
189 remove( sample->get_sample_name() );
192 if ( sample->has_changed() ) {
193 if ( !sample->is_playing() ) {
194 // a request to stop playing the sound has been filed.
196 sample->no_valid_source();
197 _smgr->release_source( sample->get_source() );
198 } else if ( _smgr->has_changed() ) {
199 update_sample_config( sample );
204 testForALError("update");
208 // add a sound effect, return true if successful
209 bool SGSampleGroup::add( SGSharedPtr<SGSoundSample> sound, const string& refname ) {
211 sample_map_iterator sample_it = _samples.find( refname );
212 if ( sample_it != _samples.end() ) {
213 // sample name already exists
217 _samples[refname] = sound;
222 // remove a sound effect, return true if successful
223 bool SGSampleGroup::remove( const string &refname ) {
225 sample_map_iterator sample_it = _samples.find( refname );
226 if ( sample_it == _samples.end() ) {
227 // sample was not found
231 if ( sample_it->second->is_valid_buffer() )
232 _removed_samples.push_back( sample_it->second );
234 _samples.erase( sample_it );
240 // return true of the specified sound exists in the sound manager system
241 bool SGSampleGroup::exists( const string &refname ) {
242 sample_map_iterator sample_it = _samples.find( refname );
243 if ( sample_it == _samples.end() ) {
244 // sample was not found
252 // return a pointer to the SGSoundSample if the specified sound exists
253 // in the sound manager system, otherwise return NULL
254 SGSoundSample *SGSampleGroup::find( const string &refname ) {
255 sample_map_iterator sample_it = _samples.find( refname );
256 if ( sample_it == _samples.end() ) {
257 // sample was not found
261 return sample_it->second;
266 SGSampleGroup::stop ()
269 sample_map_iterator sample_current = _samples.begin();
270 sample_map_iterator sample_end = _samples.end();
271 for ( ; sample_current != sample_end; ++sample_current ) {
272 SGSoundSample *sample = sample_current->second;
274 if ( sample->is_valid_source() ) {
275 ALint source = sample->get_source();
276 if ( sample->is_playing() ) {
277 alSourceStop( source );
279 _smgr->release_source( source );
280 sample->no_valid_source();
283 if ( sample->is_valid_buffer() ) {
284 _smgr->release_buffer( sample );
285 sample->no_valid_buffer();
288 testForALError("stop");
291 // stop playing all associated samples
293 SGSampleGroup::suspend ()
295 if (_active && _pause == false) {
297 sample_map_iterator sample_current = _samples.begin();
298 sample_map_iterator sample_end = _samples.end();
299 for ( ; sample_current != sample_end; ++sample_current ) {
300 SGSoundSample *sample = sample_current->second;
302 if ( sample->is_valid_source() && sample->is_playing() ) {
303 alSourcePause( sample->get_source() );
306 testForALError("suspend");
310 // resume playing all associated samples
312 SGSampleGroup::resume ()
314 if (_active && _pause == true) {
315 sample_map_iterator sample_current = _samples.begin();
316 sample_map_iterator sample_end = _samples.end();
317 for ( ; sample_current != sample_end; ++sample_current ) {
318 SGSoundSample *sample = sample_current->second;
320 if ( sample->is_valid_source() && sample->is_playing() ) {
321 alSourcePlay( sample->get_source() );
324 testForALError("resume");
330 // tell the scheduler to play the indexed sample in a continuous loop
331 bool SGSampleGroup::play( const string &refname, bool looping = false ) {
332 SGSoundSample *sample = find( refname );
334 if ( sample == NULL ) {
338 sample->play( looping );
343 // return true of the specified sound is currently being played
344 bool SGSampleGroup::is_playing( const string& refname ) {
345 SGSoundSample *sample = find( refname );
347 if ( sample == NULL ) {
351 return ( sample->is_playing() ) ? true : false;
354 // immediate stop playing the sound
355 bool SGSampleGroup::stop( const string& refname ) {
356 SGSoundSample *sample = find( refname );
358 if ( sample == NULL ) {
366 void SGSampleGroup::set_volume( float vol )
368 if (vol > _volume*1.01 || vol < _volume*0.99) {
370 if (_volume < 0.0) _volume = 0.0;
371 if (_volume > 1.0) _volume = 1.0;
376 // set the source position and orientation of all managed sounds
377 void SGSampleGroup::update_pos_and_orientation() {
379 SGVec3d position = SGVec3d::fromGeod(_base_pos) - _smgr->get_position();
380 SGQuatd hlOr = SGQuatd::fromLonLat(_base_pos);
381 SGQuatd ec2body = hlOr*_orientation;
383 SGVec3f velocity = SGVec3f::zeros();
384 if ( _velocity[0] || _velocity[1] || _velocity[2] ) {
385 velocity = toVec3f( hlOr.backTransform(_velocity*SG_FEET_TO_METER) );
388 sample_map_iterator sample_current = _samples.begin();
389 sample_map_iterator sample_end = _samples.end();
390 for ( ; sample_current != sample_end; ++sample_current ) {
391 SGSoundSample *sample = sample_current->second;
392 sample->set_master_volume( _volume );
393 sample->set_orientation( _orientation );
394 sample->set_rotation( ec2body );
395 sample->set_position( position );
396 sample->set_velocity( velocity );
398 // Test if a sample is farther away than max distance, if so
399 // stop the sound playback and free it's source.
400 if (!_tied_to_listener) {
401 float max2 = sample->get_max_dist() * sample->get_max_dist();
402 float dist2 = position[0]*position[0]
403 + position[1]*position[1] + position[2]*position[2];
404 if ((dist2 > max2) && !sample->test_out_of_range()) {
405 sample->set_out_of_range(true);
406 } else if ((dist2 < max2) && sample->test_out_of_range()) {
407 sample->set_out_of_range(false);
413 void SGSampleGroup::update_sample_config( SGSoundSample *sample ) {
414 SGVec3f orientation, velocity;
417 if ( _tied_to_listener ) {
418 orientation = _smgr->get_direction();
419 position = SGVec3d::zeros();
420 velocity = _smgr->get_velocity();
422 sample->update_pos_and_orientation();
423 orientation = sample->get_orientation();
424 position = sample->get_position();
425 velocity = sample->get_velocity();
428 if (_smgr->bad_doppler_effect()) {
433 if (length(position) > 20000)
434 printf("%s source and listener distance greater than 20km!\n",
436 if (isNaN(toVec3f(position).data())) printf("NaN in source position\n");
437 if (isNaN(orientation.data())) printf("NaN in source orientation\n");
438 if (isNaN(velocity.data())) printf("NaN in source velocity\n");
441 unsigned int source = sample->get_source();
442 alSourcefv( source, AL_POSITION, toVec3f(position).data() );
443 alSourcefv( source, AL_VELOCITY, velocity.data() );
444 alSourcefv( source, AL_DIRECTION, orientation.data() );
445 testForALError("position and orientation");
447 alSourcef( source, AL_PITCH, sample->get_pitch() );
448 alSourcef( source, AL_GAIN, sample->get_volume() );
449 testForALError("pitch and gain");
451 if ( sample->has_static_data_changed() ) {
452 alSourcef( source, AL_CONE_INNER_ANGLE, sample->get_innerangle() );
453 alSourcef( source, AL_CONE_OUTER_ANGLE, sample->get_outerangle() );
454 alSourcef( source, AL_CONE_OUTER_GAIN, sample->get_outergain() );
455 testForALError("audio cone");
457 alSourcef( source, AL_MAX_DISTANCE, sample->get_max_dist() );
458 alSourcef( source, AL_REFERENCE_DISTANCE,
459 sample->get_reference_dist() );
460 testForALError("distance rolloff");
464 bool SGSampleGroup::testForError(void *p, string s)
467 SG_LOG( SG_SOUND, SG_ALERT, "Error (sample group): " << s);
473 bool SGSampleGroup::testForALError(string s)
475 ALenum error = alGetError();
476 if (error != AL_NO_ERROR) {
477 SG_LOG( SG_SOUND, SG_ALERT, "AL Error (" << _refname << "): "
478 << alGetString(error) << " at " << s);