#endif
#include <iostream>
+#include <algorithm>
#include "soundmgr_openal.hxx"
_volume(0.0),
_device(NULL),
_context(NULL),
- _listener_pos(SGVec3d::zeros().data()),
- _listener_vel(SGVec3f::zeros().data()),
+ _position(SGVec3d::zeros()),
+ _velocity(SGVec3d::zeros()),
+ _orientation(SGQuatd::zeros()),
_devname(NULL)
{
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
// destructor
SGSoundMgr::~SGSoundMgr() {
+
stop();
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
_alut_init--;
ALCcontext *context = alcCreateContext(device, NULL);
if ( testForError(context, "Unable to create a valid context.") ) {
+ alcCloseDevice (device);
return;
}
if ( !alcMakeContextCurrent(context) ) {
testForALCError("context initialization");
+ alcDestroyContext (context);
+ alcCloseDevice (device);
return;
}
_context = context;
_working = true;
- _listener_ori[0] = 0.0; _listener_ori[1] = 0.0; _listener_ori[2] = -1.0;
- _listener_ori[3] = 0.0; _listener_ori[4] = 1.0; _listener_ori[5] = 0.0;
+ _at_up_vec[0] = 0.0; _at_up_vec[1] = 0.0; _at_up_vec[2] = -1.0;
+ _at_up_vec[3] = 0.0; _at_up_vec[4] = 1.0; _at_up_vec[5] = 0.0;
alListenerf( AL_GAIN, 0.2f );
- alListenerfv( AL_POSITION, toVec3f(_listener_pos).data() );
- alListenerfv( AL_ORIENTATION, _listener_ori );
- alListenerfv( AL_VELOCITY, _listener_vel.data() );
+ alListenerfv( AL_ORIENTATION, _at_up_vec );
+ alListenerfv( AL_POSITION, SGVec3f::zeros().data() );
+ alListenerfv( AL_VELOCITY, SGVec3f::zeros().data() );
alDopplerFactor(1.0);
alDopplerVelocity(340.3); // speed of sound in meters per second.
testForALError("listener initialization");
- alGetError(); // clear any undetetced error, just to be sure
-
// get a free source one at a time
// if an error is returned no more (hardware) sources are available
for (unsigned int i=0; i<MAX_SOURCES; i++) {
}
else break;
}
+
+ if (_free_sources.size() == 0) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "Unable to grab any OpenAL sources!");
+ }
}
// suspend the sound manager
if (_working) {
_working = false;
+ // clear any OpenAL buffers before shutting down
+ buffer_map_iterator buffers_current;
+ while(_buffers.size()){
+ buffers_current = _buffers.begin();
+ refUint ref = buffers_current->second;
+ ALuint buffer = ref.id;
+ alDeleteBuffers(1, &buffer);
+ _buffers.erase( buffers_current );
+ }
+
_context = alcGetCurrentContext();
_device = alcGetContextsDevice(_context);
alcMakeContextCurrent(NULL);
void SGSoundMgr::update( double dt )
{
- // nothing to do in the regular update,e verything is done on the following
+ // nothing to do in the regular update, everything is done on the following
// function
}
// run the audio scheduler
void SGSoundMgr::update_late( double dt ) {
if (_working) {
- // alcSuspendContext(_context);
+ alcSuspendContext(_context);
sample_group_map_iterator sample_grp_current = _sample_groups.begin();
sample_group_map_iterator sample_grp_end = _sample_groups.end();
if (_changed) {
alListenerf( AL_GAIN, _volume );
- alListenerfv( AL_VELOCITY, _listener_vel.data() );
- alListenerfv( AL_ORIENTATION, _listener_ori );
- alListenerfv( AL_POSITION, toVec3f(_listener_pos).data() );
+ alListenerfv( AL_ORIENTATION, _at_up_vec );
+ alListenerfv( AL_POSITION, toVec3f(_position).data() );
+ alListenerfv( AL_VELOCITY, toVec3f(_velocity).data() );
// alDopplerVelocity(340.3); // TODO: altitude dependent
testForALError("update");
_changed = false;
}
- // alcProcessContext(_context);
+ alcProcessContext(_context);
}
}
_changed = true;
}
+/**
+ * set the orientation of the listener (in opengl coordinates)
+ *
+ * Description: ORIENTATION is a pair of 3-tuples representing the
+ * 'at' direction vector and 'up' direction of the Object in
+ * Cartesian space. AL expects two vectors that are orthogonal to
+ * each other. These vectors are not expected to be normalized. If
+ * one or more vectors have zero length, implementation behavior
+ * is undefined. If the two vectors are linearly dependent,
+ * behavior is undefined.
+ */
+void SGSoundMgr::set_orientation( SGQuatd ori )
+{
+ _orientation = ori;
+
+ SGVec3d sgv_up = ori.rotate(SGVec3d::e2());
+ SGVec3d sgv_at = ori.rotate(SGVec3d::e3());
+ _at_up_vec[0] = sgv_at[0];
+ _at_up_vec[1] = sgv_at[1];
+ _at_up_vec[2] = sgv_at[2];
+ _at_up_vec[3] = sgv_up[0];
+ _at_up_vec[4] = sgv_up[1];
+ _at_up_vec[5] = sgv_up[2];
+ _changed = true;
+}
+
// Get an unused source id
//
// The Sound Manager should keep track of the sources in use, the distance
if (_free_sources.size() > 0) {
source = _free_sources.back();
_free_sources.pop_back();
-
_sources_in_use.push_back(source);
}
// Free up a source id for further use
void SGSoundMgr::release_source( unsigned int source )
{
- for (unsigned int i = 0; i<_sources_in_use.size(); i++) {
- if ( _sources_in_use[i] == source ) {
- ALint result;
+ vector<ALuint>::iterator it;
- alGetSourcei( source, AL_SOURCE_STATE, &result );
- if ( result == AL_PLAYING ) {
- alSourceStop( source );
- }
- testForALError("release source");
+ it = std::find(_sources_in_use.begin(), _sources_in_use.end(), source);
+ if ( it != _sources_in_use.end() ) {
+ ALint result;
+
+ alGetSourcei( source, AL_SOURCE_STATE, &result );
+ if ( result == AL_PLAYING )
+ alSourceStop( source );
+ testForALError("release source");
+
+ _free_sources.push_back(source);
+ _sources_in_use.erase(it, it+1);
+ }
+}
+
+unsigned int SGSoundMgr::request_buffer(SGSoundSample *sample)
+{
+ ALuint buffer = NO_BUFFER;
+
+ if ( !sample->is_valid_buffer() ) {
+ // sample was not yet loaded or removed again
+ string sample_name = sample->get_sample_name();
+
+ // see if the sample name is already cached
+ buffer_map_iterator buffer_it = _buffers.find( sample_name );
+ if ( buffer_it != _buffers.end() ) {
+ buffer_it->second.refctr++;
+ buffer = buffer_it->second.id;
+ sample->set_buffer( buffer );
+ return buffer;
+ }
- _free_sources.push_back(source);
- _sources_in_use.erase(_sources_in_use.begin()+i,
- _sources_in_use.begin()+i+1);
- break;
+ // sample name was not found in the buffer cache.
+ if ( sample->is_file() ) {
+ unsigned int size;
+ int freq, format;
+ void *data;
+
+ load(sample_name, &data, &format, &size, &freq);
+ sample->set_data( (unsigned char *)data );
+ sample->set_frequency( freq );
+ sample->set_format( format );
+ sample->set_size( size );
+ }
+
+ // create an OpenAL buffer handle
+ alGenBuffers(1, &buffer);
+ if ( !testForALError("generate buffer") ) {
+ // Copy data to the internal OpenAL buffer
+
+ const ALvoid *data = sample->get_data();
+ ALenum format = sample->get_format();
+ ALsizei size = sample->get_size();
+ ALsizei freq = sample->get_frequency();
+ alBufferData( buffer, format, data, size, freq );
+ sample->free_data();
+
+ if ( !testForALError("buffer add data") ) {
+ sample->set_buffer(buffer);
+ _buffers[sample_name] = refUint(buffer);
+ }
}
}
+ else
+ buffer = sample->get_buffer();
+
+ return buffer;
+}
+
+void SGSoundMgr::release_buffer(SGSoundSample *sample)
+{
+ string sample_name = sample->get_sample_name();
+
+ buffer_map_iterator buffer_it = _buffers.find( sample_name );
+ if ( buffer_it == _buffers.end() ) {
+ // buffer was not found
+ return;
+ }
+
+ sample->no_valid_buffer();
+ buffer_it->second.refctr--;
+ if (buffer_it->second.refctr == 0) {
+ ALuint buffer = buffer_it->second.id;
+ _buffers.erase( buffer_it );
+ alDeleteBuffers(1, &buffer);
+ testForALError("release buffer");
+ }
}
bool SGSoundMgr::load(string &samplepath, void **dbuf, int *fmt,
}
-/**
- * set the orientation of the listener (in opengl coordinates)
- *
- * Description: ORIENTATION is a pair of 3-tuples representing the
- * 'at' direction vector and 'up' direction of the Object in
- * Cartesian space. AL expects two vectors that are orthogonal to
- * each other. These vectors are not expected to be normalized. If
- * one or more vectors have zero length, implementation behavior
- * is undefined. If the two vectors are linearly dependent,
- * behavior is undefined.
- */
-void SGSoundMgr::set_orientation( SGQuatd ori )
-{
- SGVec3d sgv_up = ori.rotate(SGVec3d::e2());
- SGVec3d sgv_at = ori.rotate(SGVec3d::e3());
- for (int i=0; i<3; i++) {
- _listener_ori[i] = sgv_at[i];
- _listener_ori[i+3] = sgv_up[i];
- }
- _changed = true;
-}
-
-
bool SGSoundMgr::testForError(void *p, string s)
{
if (p == NULL) {
bool SGSoundMgr::testForALUTError(string s)
{
+#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
ALenum error;
error = alutGetError ();
if (error != ALUT_ERROR_NO_ERROR) {
<< s);
return true;
}
+#endif
return false;
}
projects / simgear.git / blobdiff