// <david_j_findlay@yahoo.com.au> 2001
//
// C++-ified by Curtis Olson, started March 2001.
+// Modified for the new SoundSystem by Erik Hofman, October 2009
//
// Copyright (C) 2001 Curtis L. Olson - http://www.flightgear.org/~curt
+// Copyright (C) 2009 Erik Hofman <erik@ehofman.com>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
#include <simgear/misc/sg_path.hxx>
#include <simgear/math/SGMath.hxx>
+extern bool isNaN(float *v);
#define MAX_SOURCES 128
// constructor
SGSoundMgr::SGSoundMgr() :
_working(false),
+ _active(false),
_changed(true),
_volume(0.0),
_device(NULL),
_context(NULL),
- _position(SGVec3d::zeros()),
+ _absolute_pos(SGVec3d::zeros()),
+ _offset_pos(SGVec3d::zeros()),
+ _base_pos(SGVec3d::zeros()),
_velocity(SGVec3d::zeros()),
_orientation(SGQuatd::zeros()),
_devname(NULL)
testForALUTError("alut initialization");
return;
}
- _alut_init++;
}
_alut_init++;
#endif
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;
}
+ if (_context != NULL)
+ SG_LOG(SG_GENERAL, SG_ALERT, "context is already assigned");
_context = context;
_working = true;
_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, SGVec3f::zeros().data() );
+ alListenerf( AL_GAIN, 0.0f );
alListenerfv( AL_ORIENTATION, _at_up_vec );
- alListenerfv( AL_VELOCITY, toVec3f(_velocity).data() );
+ alListenerfv( AL_POSITION, SGVec3f::zeros().data() );
+ alListenerfv( AL_VELOCITY, SGVec3f::zeros().data() );
- alDopplerFactor(0.5);
+ alDopplerFactor(1.0);
alDopplerVelocity(340.3); // speed of sound in meters per second.
- if ( alIsExtensionPresent((const ALchar*)"EXT_exponent_distance") ) {
- alDistanceModel(AL_EXPONENT_DISTANCE);
- } else {
- alDistanceModel(AL_INVERSE_DISTANCE);
- }
+ // gain = AL_REFERENCE_DISTANCE / (AL_REFERENCE_DISTANCE +
+ // AL_ROLLOFF_FACTOR * (distance - AL_REFERENCE_DISTANCE));
+ alDistanceModel(AL_INVERSE_DISTANCE_CLAMPED);
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
+void SGSoundMgr::activate() {
+ if ( _working ) {
+ _active = true;
+ sample_group_map_iterator sample_grp_current = _sample_groups.begin();
+ sample_group_map_iterator sample_grp_end = _sample_groups.end();
+ for ( ; sample_grp_current != sample_grp_end; ++sample_grp_current ) {
+ SGSampleGroup *sgrp = sample_grp_current->second;
+ sgrp->activate();
+ }
+ }
+}
+
+// stop the sound manager
void SGSoundMgr::stop() {
if (_working) {
_working = false;
+ _active = false;
// clear any OpenAL buffers before shutting down
- buffer_map_iterator buffers_current;
- while(_buffers.size()){
- buffers_current = _buffers.begin();
+ buffer_map_iterator buffers_current = _buffers.begin();
+ buffer_map_iterator buffers_end = _buffers.end();
+ for ( ; buffers_current != buffers_end; ++buffers_current ) {
refUint ref = buffers_current->second;
ALuint buffer = ref.id;
alDeleteBuffers(1, &buffer);
- _buffers.erase( buffers_current );
}
+ _buffers.clear();
_context = alcGetCurrentContext();
_device = alcGetContextsDevice(_context);
- alcMakeContextCurrent(NULL);
alcDestroyContext(_context);
alcCloseDevice(_device);
}
SGSampleGroup *sgrp = sample_grp_current->second;
sgrp->suspend();
}
+ _active = false;
}
}
+void SGSoundMgr::resume() {
+ if (_working) {
+ sample_group_map_iterator sample_grp_current = _sample_groups.begin();
+ sample_group_map_iterator sample_grp_end = _sample_groups.end();
+ for ( ; sample_grp_current != sample_grp_end; ++sample_grp_current ) {
+ SGSampleGroup *sgrp = sample_grp_current->second;
+ sgrp->resume();
+ }
+ _active = true;
+ }
+}
void SGSoundMgr::bind ()
{
// delete free sources
for (unsigned int i=0; i<_free_sources.size(); i++) {
- ALuint source = _free_sources.at( i );
+ ALuint source = _free_sources[i];
alDeleteSources( 1 , &source );
}
_sources_in_use.clear();
}
-void SGSoundMgr::update( double dt )
-{
- // 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);
+void SGSoundMgr::update( double dt ) {
+ if (_active) {
+ if (_changed) {
+ update_pos_and_orientation();
+ }
sample_group_map_iterator sample_grp_current = _sample_groups.begin();
sample_group_map_iterator sample_grp_end = _sample_groups.end();
}
if (_changed) {
+#if 0
+if (isNaN(_at_up_vec)) printf("NaN in listener orientation\n");
+if (isNaN(toVec3f(_absolute_pos).data())) printf("NaN in listener position\n");
+if (isNaN(_velocity.data())) printf("NaN in listener velocity\n");
+#endif
alListenerf( AL_GAIN, _volume );
alListenerfv( AL_ORIENTATION, _at_up_vec );
- alListenerfv( AL_POSITION, toVec3f(_position).data() );
- alListenerfv( AL_VELOCITY, toVec3f(_velocity).data() );
+ // alListenerfv( AL_POSITION, toVec3f(_absolute_pos).data() );
+ alListenerfv( AL_VELOCITY, _velocity.data() );
// alDopplerVelocity(340.3); // TODO: altitude dependent
testForALError("update");
_changed = false;
}
- alcProcessContext(_context);
}
}
-
-void
-SGSoundMgr::resume ()
-{
- if (_working) {
- sample_group_map_iterator sample_grp_current = _sample_groups.begin();
- sample_group_map_iterator sample_grp_end = _sample_groups.end();
- for ( ; sample_grp_current != sample_grp_end; ++sample_grp_current ) {
- SGSampleGroup *sgrp = sample_grp_current->second;
- sgrp->resume();
- }
- }
-}
-
-
-// add a sampel group, return true if successful
+// add a sample group, return true if successful
bool SGSoundMgr::add( SGSampleGroup *sgrp, const string& refname )
{
sample_group_map_iterator sample_grp_it = _sample_groups.find( refname );
return false;
}
+ if (_active) sgrp->activate();
_sample_groups[refname] = sgrp;
return true;
return false;
}
- _sample_groups.erase( refname );
+ _sample_groups.erase( sample_grp_it );
return true;
}
// sample group was not found.
if (create) {
SGSampleGroup* sgrp = new SGSampleGroup(this, refname);
+ add( sgrp, refname );
return sgrp;
}
else
_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
_free_sources.pop_back();
_sources_in_use.push_back(source);
}
+ else
+ SG_LOG( SG_GENERAL, SG_INFO, "No more free sources available\n");
return source;
}
alSourceStop( source );
testForALError("release source");
- _free_sources.push_back(source);
- _sources_in_use.erase(it, it+1);
+ alSourcei( source, AL_BUFFER, 0 );
+ _free_sources.push_back( source );
+ _sources_in_use.erase( it );
}
}
// sample name was not found in the buffer cache.
if ( sample->is_file() ) {
- unsigned int size;
+ size_t size;
int freq, format;
void *data;
load(sample_name, &data, &format, &size, &freq);
- sample->set_data( (unsigned char *)data );
+ sample->set_data( &data );
sample->set_frequency( freq );
sample->set_format( format );
sample->set_size( size );
ALsizei size = sample->get_size();
ALsizei freq = sample->get_frequency();
alBufferData( buffer, format, data, size, freq );
- sample->free_data();
+
+ // If this sample was read from a file we have all the information
+ // needed to read it again. For data buffers provided by the
+ // program we don't; so don't delete it's data.
+ if ( sample->is_file() ) sample->free_data();
if ( !testForALError("buffer add data") ) {
sample->set_buffer(buffer);
}
}
}
- else
+ 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
buffer_it->second.refctr--;
if (buffer_it->second.refctr == 0) {
ALuint buffer = buffer_it->second.id;
- _buffers.erase( buffer_it );
alDeleteBuffers(1, &buffer);
+ _buffers.erase( buffer_it );
testForALError("release buffer");
}
}
+void SGSoundMgr::update_pos_and_orientation() {
+ /**
+ * 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.
+ *
+ * This is in the same coordinate system as OpenGL; y=up, z=back, x=right.
+ */
+ SGVec3d sgv_at = _orientation.backTransform(-SGVec3d::e3());
+ SGVec3d sgv_up = _orientation.backTransform(SGVec3d::e2());
+ _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];
+
+ // static const SGQuatd q(-0.5, -0.5, 0.5, 0.5);
+ // SGQuatd hlOr = SGQuatd::fromLonLat(SGGeod::fromCart(_base_pos));
+ // SGQuatd ec2body = hlOr*_orientation;
+ _absolute_pos = _base_pos; // + ec2body.backTransform( _offset_pos );
+}
+
bool SGSoundMgr::load(string &samplepath, void **dbuf, int *fmt,
- unsigned int *sz, int *frq )
+ size_t *sz, int *frq )
{
- ALenum format = (ALenum)*fmt;
- ALsizei size = (ALsizei)*sz;
- ALsizei freq = (ALsizei)*frq;
+ if ( !_working ) return false;
+
+ ALenum format;
+ ALsizei size;
+ ALsizei freq;
ALvoid *data;
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
ALboolean loop;
alutLoadWAVFile( fname, &format, &data, &size, &freq, &loop );
# endif
- ALenum error = alutGetError();
- if ( error != ALUT_ERROR_NO_ERROR ) {
+ ALenum error = alGetError();
+ if ( error != AL_NO_ERROR ) {
string msg = "Failed to load wav file: ";
- msg.append(alutGetErrorString(error));
+ msg.append(alGetString(error));
throw sg_io_exception(msg.c_str(), sg_location(samplepath));
return false;
}
*dbuf = (void *)data;
*fmt = (int)format;
- *sz = (unsigned int)size;
+ *sz = (size_t)size;
*frq = (int)freq;
return true;
projects / simgear.git / blobdiff