// <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
#endif
#include <iostream>
+#include <algorithm>
#include "soundmgr_openal.hxx"
#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),
- _listener_pos(SGVec3d::zeros().data()),
- _listener_vel(SGVec3f::zeros().data()),
- _devname(NULL)
+ _absolute_pos(SGVec3d::zeros()),
+ _offset_pos(SGVec3d::zeros()),
+ _base_pos(SGVec3d::zeros()),
+ _geod_pos(SGGeod::fromCart(SGVec3d::zeros())),
+ _velocity(SGVec3d::zeros()),
+ _orientation(SGQuatd::zeros()),
+ _bad_doppler(false)
{
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
if (_alut_init == 0) {
testForALUTError("alut initialization");
return;
}
- _alut_init++;
}
_alut_init++;
#endif
// destructor
SGSoundMgr::~SGSoundMgr() {
+
stop();
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
_alut_init--;
}
// initialize the sound manager
-void SGSoundMgr::init() {
+void SGSoundMgr::init(const char *devname) {
SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
- ALCdevice *device = alcOpenDevice(_devname);
- if ( testForError(device, "No default audio device available.") ) {
- return;
+ ALCdevice *device = alcOpenDevice(devname);
+ if ( testForError(device, "Audio device not available, trying default") ) {
+ device = alcOpenDevice(NULL);
+ if (testForError(device, "Default Audio device not available.") ) {
+ return;
+ }
}
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;
- _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() );
+ alListenerf( AL_GAIN, 0.0f );
+ 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.
- 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;
}
+
+ string vendor = alGetString(AL_VENDOR);
+ string renderer = alGetString(AL_RENDERER);
+ if ( vendor != "OpenAL Community" ||
+ (renderer != "Software" && renderer != "OpenAL Sample Implementation")
+ )
+ {
+ _bad_doppler = true;
+ }
+
+ 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() {
+
+ // first stop all sample groups
+ 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->stop();
+ }
+
+ // clear all OpenAL sources
+ for (unsigned int i=0; i<_free_sources.size(); i++) {
+ ALuint source = _free_sources[i];
+ alDeleteSources( 1 , &source );
+ }
+ _free_sources.clear();
+
+ // clear any OpenAL buffers before shutting down
+ 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.clear();
+
if (_working) {
_working = false;
-
+ _active = false;
_context = alcGetCurrentContext();
_device = alcGetContextsDevice(_context);
- alcMakeContextCurrent(NULL);
alcDestroyContext(_context);
alcCloseDevice(_device);
+ _context = NULL;
}
}
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->suspend();
+ sgrp->stop();
}
+ _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,e verything 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) {
+ alcSuspendContext(_context);
+
+ 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_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(_absolute_pos).data() );
+
+ SGQuatd hlOr = SGQuatd::fromLonLat( _geod_pos );
+ SGVec3d velocity = SGVec3d::zeros();
+ if ( _velocity[0] || _velocity[1] || _velocity[2] ) {
+ velocity = hlOr.backTransform(_velocity*SG_FEET_TO_METER);
+ }
+
+ if ( _bad_doppler ) {
+ velocity *= 100.0f;
+ }
+
+ alListenerfv( AL_VELOCITY, toVec3f(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();
- }
+ alcProcessContext(_context);
}
}
-
-// 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
if (_free_sources.size() > 0) {
source = _free_sources.back();
_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;
}
// 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");
+
+ alSourcei( source, AL_BUFFER, 0 );
+ _free_sources.push_back( source );
+ _sources_in_use.erase( it );
+ }
+}
+
+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();
+ void *sample_data = NULL;
+
+ // 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;
+ }
+
+ // sample name was not found in the buffer cache.
+ if ( sample->is_file() ) {
+ int freq, format;
+ size_t size;
+ bool res;
+
+ res = load(sample_name, &sample_data, &format, &size, &freq);
+ if (res == false) return buffer;
+
+ sample->set_frequency( freq );
+ sample->set_format( format );
+ sample->set_size( size );
+ }
+ else
+ sample_data = sample->get_data();
+
+ // create an OpenAL buffer handle
+ alGenBuffers(1, &buffer);
+ if ( !testForALError("generate buffer") ) {
+ // Copy data to the internal OpenAL buffer
+
+ ALenum format = sample->get_format();
+ ALsizei size = sample->get_size();
+ ALsizei freq = sample->get_frequency();
+ alBufferData( buffer, format, sample_data, size, freq );
- _free_sources.push_back(source);
- _sources_in_use.erase(_sources_in_use.begin()+i,
- _sources_in_use.begin()+i+1);
- break;
+ if ( sample->is_file() ) free(sample_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;
+ 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;
}
-
-/**
- * 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 )
+vector<const char*> SGSoundMgr::get_available_devices()
{
- SGVec3d sgv_up = ori.rotate(SGVec3d::e3());
- SGVec3d sgv_at = ori.rotate(SGVec3d::e2());
- for (int i=0; i<3; i++) {
- _listener_ori[i] = sgv_at[i];
- _listener_ori[i+3] = sgv_up[i];
+ vector<const char*> devices;
+ const ALCchar *s;
+
+ if (alcIsExtensionPresent(NULL, "ALC_enumerate_all_EXT") == AL_TRUE) {
+ s = alcGetString(NULL, ALC_ALL_DEVICES_SPECIFIER);
+ } else {
+ s = alcGetString(NULL, ALC_DEVICE_SPECIFIER);
}
- _changed = true;
+
+ if (s) {
+ ALCchar *nptr, *ptr = (ALCchar *)s;
+
+ nptr = ptr;
+ while (*(nptr += strlen(ptr)+1) != 0)
+ {
+ devices.push_back(ptr);
+ ptr = nptr;
+ }
+ devices.push_back(ptr);
+ }
+
+ return devices;
}
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