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Erik Hofman 2010-12-13 18:40:08 +01:00
parent 7d77eff4f4
commit cf8d6c2621
2 changed files with 0 additions and 921 deletions
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608
simgear/sound/aax/soundmgr_aax.cxx
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// soundmgr.cxx -- Sound effect management class
//
// Sound manager initially written by David Findlay
// <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
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
#ifdef HAVE_CONFIG_H
# include <simgear_config.h>
#endif
#if defined( __APPLE__ )
# include <ALUT/alut.h>
#else
# include <AL/alut.h>
#endif
#include <iostream>
#include <algorithm>
#include "soundmgr_openal.hxx"
#include <simgear/structure/exception.hxx>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/math/SGMath.hxx>
using std::string;
extern bool isNaN(float *v);
#define MAX_SOURCES 128
//
// Sound Manager
//
int SGSoundMgr::_alut_init = 0;
// constructor
SGSoundMgr::SGSoundMgr() :
_working(false),
_active(false),
_changed(true),
_volume(0.0),
_device(NULL),
_context(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),
_renderer("unknown"),
_vendor("unknown")
{
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
if (_alut_init == 0) {
if ( !alutInitWithoutContext(NULL, NULL) ) {
testForALUTError("alut initialization");
return;
}
}
_alut_init++;
#else
//#error ALUT 1.1 required, ALUT 1.0 is no longer supported, please upgrade
#endif
}
// destructor
SGSoundMgr::~SGSoundMgr() {
stop();
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
_alut_init--;
if (_alut_init == 0) {
alutExit ();
}
#endif
}
// initialize the sound manager
void SGSoundMgr::init(const char *devname) {
SG_LOG( SG_GENERAL, SG_INFO, "Initializing OpenAL sound manager" );
_config = aaxDriverOpenByName(devname, AAX_MODE_WRITE_STEREO);
if ( testForError(C-nfig, "Audio device not available, trying default") ) {
_config = aaxDriverOpenDefault(AAX_MODE_WRITE_STEREO);
if (testForError(_config, "Default Audio device not available.") ) {
return;
}
}
aaxMixerInit(_config);
aaxSensorSetGain(_config, 0.0);
aaxSensorSetIdentityMatrix(_config);
aaxScenerySetDopplerFactor(_config, 340.3);
aaxScenerySetDistanceModel(_config, AAX_AL_INVERSE_DISTANCE_CLAMPED);
// 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++) {
aaxEmitter source;
source = aaxEmitterCreate();
if ( source ) {
_free_sources.push_back( source );
}
else break;
}
if (_free_sources.size() == 0) {
SG_LOG(SG_GENERAL, SG_ALERT, "Unable to grab any OpenAL sources!");
}
}
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++) {
aaxEmitter source = _free_sources[i];
aaxEmitterDestroy(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;
aaxBuffer buffer = ref.id;
aaxBufferDestroy(buffer);
}
_buffers.clear();
if (_working) {
_working = false;
_active = false;
aaxDriverClose(_config);
aaxDriverFree(_config);
_renderer = "unknown";
_vendor = "unknown";
}
}
void SGSoundMgr::suspend() {
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->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 ()
{
_free_sources.clear();
_free_sources.reserve( MAX_SOURCES );
_sources_in_use.clear();
_sources_in_use.reserve( MAX_SOURCES );
}
void SGSoundMgr::unbind ()
{
_sample_groups.clear();
// delete free sources
for (unsigned int i=0; i<_free_sources.size(); i++) {
aaxEmitter source = _free_sources[i];
aaxEmitterDestroy(source);
}
_free_sources.clear();
_sources_in_use.clear();
}
// run the audio scheduler
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();
for ( ; sample_grp_current != sample_grp_end; ++sample_grp_current ) {
SGSampleGroup *sgrp = sample_grp_current->second;
sgrp->update(dt);
}
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
SGMatrix m = SGMatrix(_orientation);
aaxSensorSetMatrix(m.data());
aaxSensorSetGain(_config, _volume);
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);
}
aaxSensorSetVelocity(toVec3f(velocity).data());
// TODO: altitude dependent
// aaxScenerySetDopplerFactor(_config, 340.3);
_changed = false;
}
}
}
// 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 );
if ( sample_grp_it != _sample_groups.end() ) {
// sample group already exists
return false;
}
if (_active) sgrp->activate();
_sample_groups[refname] = sgrp;
return true;
}
// remove a sound effect, return true if successful
bool SGSoundMgr::remove( const string &refname )
{
sample_group_map_iterator sample_grp_it = _sample_groups.find( refname );
if ( sample_grp_it == _sample_groups.end() ) {
// sample group was not found.
return false;
}
_sample_groups.erase( sample_grp_it );
return true;
}
// return true of the specified sound exists in the sound manager system
bool SGSoundMgr::exists( const string &refname ) {
sample_group_map_iterator sample_grp_it = _sample_groups.find( refname );
if ( sample_grp_it == _sample_groups.end() ) {
// sample group was not found.
return false;
}
return true;
}
// return a pointer to the SGSampleGroup if the specified sound exists
// in the sound manager system, otherwise return NULL
SGSampleGroup *SGSoundMgr::find( const string &refname, bool create ) {
sample_group_map_iterator sample_grp_it = _sample_groups.find( refname );
if ( sample_grp_it == _sample_groups.end() ) {
// sample group was not found.
if (create) {
SGSampleGroup* sgrp = new SGSampleGroup(this, refname);
add( sgrp, refname );
return sgrp;
}
else
return NULL;
}
return sample_grp_it->second;
}
void SGSoundMgr::set_volume( float v )
{
_volume = v;
if (_volume > 1.0) _volume = 1.0;
if (_volume < 0.0) _volume = 0.0;
_changed = true;
}
// Get an unused source id
//
// The Sound Manager should keep track of the sources in use, the distance
// of these sources to the listener and the volume (also based on audio cone
// and hence orientation) of the sources.
//
// The Sound Manager is (and should be) the only one knowing about source
// management. Sources further away should be suspendped to free resources for
// newly added sounds close by.
unsigned int SGSoundMgr::request_source()
{
unsigned int source = NO_SOURCE;
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 )
{
vector<ALuint>::iterator it;
it = std::find(_sources_in_use.begin(), _sources_in_use.end(), source);
if ( it != _sources_in_use.end() ) {
ALint result;
result = aaxEmitterGetStatus(source);
if ( result == AAX_STATUS_PLAYING ) {
aaxMixerDeregisterEmitter(_config, source);
aaxEmitterDestroy(source);
}
_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 a buffer handle
unsigned long size = sample->get_size();
unsigned int freq = sample->get_frequency();
enum aaxFormat fmt = sample->get_format();
buffer = aaxBufferCreate(_config, sample_data, size, fmt, tracks);
aaxBufferSetFrequency(buffer, frequency);
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) {
aaxBuffer buffer = buffer_it->second.id;
aaxBufferDestory(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,
size_t *sz, int *frq )
{
if ( !_working ) return false;
ALenum format;
ALsizei size;
ALsizei freq;
ALvoid *data;
#if defined(ALUT_API_MAJOR_VERSION) && ALUT_API_MAJOR_VERSION >= 1
ALfloat freqf;
// ignore previous errors to prevent the system from halting on silly errors
alGetError();
alcGetError(_device);
data = alutLoadMemoryFromFile(samplepath.c_str(), &format, &size, &freqf );
freq = (ALsizei)freqf;
int error = alutGetError();
if (data == NULL || error != ALUT_ERROR_NO_ERROR) {
string msg = "Failed to load wav file: ";
msg.append(alutGetErrorString(error));
throw sg_io_exception(msg.c_str(), sg_location(samplepath));
return false;
}
#else
ALbyte *fname = (ALbyte *)samplepath.c_str();
# if defined (__APPLE__)
alutLoadWAVFile( fname, &format, &data, &size, &freq );
# else
ALboolean loop;
alutLoadWAVFile( fname, &format, &data, &size, &freq, &loop );
# endif
ALenum error = alGetError();
if ( error != AL_NO_ERROR ) {
string msg = "Failed to load wav file: ";
const ALchar *errorString = alGetString(error);
if (errorString) {
msg.append(errorString);
} else {
// alGetString returns NULL when an unexpected or OS specific error
// occurs: e.g. -43 on Mac when file is not found.
// In this case, alGetString() sets 'Invalid Enum' error, so
// showing with the original error number is helpful.
stringstream ss;
ss << alGetString(alGetError()) << "(" << error << ")";
msg.append(ss.str());
}
throw sg_io_exception(msg.c_str(), sg_location(samplepath));
return false;
}
#endif
*dbuf = (void *)data;
*fmt = (int)format;
*sz = (size_t)size;
*frq = (int)freq;
return true;
}
vector<const char*> SGSoundMgr::get_available_devices()
{
vector<const char*> devices;
unsigned int x, max;
char *s;
max = aaxDriverGetCount();
for (x=0; x<max; x++)
{
aaxConfig cfg = aaxDriverGetByNumber(x);
if (cfg) {
unsigned int y, max_device;
const char *d;
d = aaxDriverGetName(cfg);
max_device = aaxDriverGetDeviceCount(cfg);
for (y=0; y<max_device; y++) {
const char *r = aaxDriverGetDeviceNameByPos(cfg, y);
printf(" '%s on %s'\n", d, r);
devices.push_back(s);
}
aaxDriverFree(cfg);
}
}
return devices;
}
bool SGSoundMgr::testForError(void *p, string s)
{
if (p == NULL) {
SG_LOG( SG_GENERAL, SG_ALERT, "Error: " << s);
return true;
}
return false;
}
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) {
SG_LOG( SG_GENERAL, SG_ALERT, "ALUT Error (sound manager): "
<< alutGetErrorString(error) << " at "
<< s);
return true;
}
#endif
return false;
}

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simgear/sound/aax/soundmgr_aax.hxx
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// soundmgr.hxx -- Sound effect management class
//
// Sound manager initially written by David Findlay
// <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
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
/**
* \file soundmgr.hxx
* Provides a sound manager class to keep track of
* multiple sounds and manage playing them with different effects and
* timings.
*/
#ifndef _SG_SOUNDMGR_AAX_HXX
#define _SG_SOUNDMGR_AAX_HXX 1
#include <string>
#include <vector>
#include <map>
#include <aax.h>
#include <simgear/compiler.h>
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/math/SGMathFwd.hxx>
#include "sample_group.hxx"
struct refUint {
unsigned int refctr;
ALuint id;
refUint() { refctr = 0; id = (ALuint)-1; };
refUint(ALuint i) { refctr = 1; id = i; };
~refUint() {};
};
typedef std::map < std::string, refUint > buffer_map;
typedef buffer_map::iterator buffer_map_iterator;
typedef buffer_map::const_iterator const_buffer_map_iterator;
typedef std::map < std::string, SGSharedPtr<SGSampleGroup> > sample_group_map;
typedef sample_group_map::iterator sample_group_map_iterator;
typedef sample_group_map::const_iterator const_sample_group_map_iterator;
/**
* Manage a collection of SGSampleGroup instances
*/
class SGSoundMgr : public SGSubsystem
{
public:
SGSoundMgr();
~SGSoundMgr();
void init(const char *devname = NULL);
void bind();
void unbind();
void update(double dt);
void suspend();
void resume();
void stop();
inline void reinit() { stop(); init(); }
/**
* Test is the sound manager is in a working condition.
* @return true is the sound manager is working
*/
inline bool is_working() const { return _working; }
/**
* Set the sound manager to a working condition.
*/
void activate();
/**
* Test is the sound manager is in an active and working condition.
* @return true is the sound manager is active
*/
inline bool is_active() const { return _active; }
/**
* Register a sample group to the sound manager.
* @para sgrp Pointer to a sample group to add
* @param refname Reference name of the sample group
* @return true if successful, false otherwise
*/
bool add( SGSampleGroup *sgrp, const std::string& refname );
/**
* Remove a sample group from the sound manager.
* @param refname Reference name of the sample group to remove
* @return true if successful, false otherwise
*/
bool remove( const std::string& refname );
/**
* Test if a specified sample group is registered at the sound manager
* @param refname Reference name of the sample group test for
* @return true if the specified sample group exists
*/
bool exists( const std::string& refname );
/**
* Find a specified sample group in the sound manager
* @param refname Reference name of the sample group to find
* @return A pointer to the SGSampleGroup
*/
SGSampleGroup *find( const string& refname, bool create = false );
/**
* Set the Cartesian position of the sound manager.
* @param pos listener position
*/
void set_position( const SGVec3d& pos, const SGGeod& pos_geod ) {
_base_pos = pos; _geod_pos = pos_geod; _changed = true;
}
void set_position_offset( const SGVec3d& pos ) {
_offset_pos = pos; _changed = true;
}
/**
* Get the position of the sound manager.
* This is in the same coordinate system as OpenGL; y=up, z=back, x=right
* @return listener position
*/
SGVec3d& get_position() { return _absolute_pos; }
/**
* Set the velocity vector (in meters per second) of the sound manager
* This is the horizontal local frame; x=north, y=east, z=down
* @param Velocity vector
*/
void set_velocity( const SGVec3d& vel ) {
_velocity = vel; _changed = true;
}
/**
* Get the velocity vector of the sound manager
* This is in the same coordinate system as OpenGL; y=up, z=back, x=right.
* @return Velocity vector of the listener
*/
inline SGVec3f get_velocity() { return toVec3f(_velocity); }
/**
* Set the orientation of the sound manager
* @param ori Quaternation containing the orientation information
*/
void set_orientation( const SGQuatd& ori ) {
_orientation = ori; _changed = true;
}
/**
* Get the orientation of the sound manager
* @return Quaternation containing the orientation information
*/
inline const SGQuatd& get_orientation() { return _orientation; }
/**
* Get the direction vector of the sound manager
* This is in the same coordinate system as OpenGL; y=up, z=back, x=right.
* @return Look-at direction of the listener
*/
SGVec3f get_direction() {
return SGVec3f(_at_up_vec[0], _at_up_vec[1], _at_up_vec[2]);
}
enum {
NO_SOURCE = (unsigned int)-1,
NO_BUFFER = (unsigned int)-1
};
/**
* Set the master volume.
* @param vol Volume (must be between 0.0 and 1.0)
*/
void set_volume( float vol );
/**
* Get the master volume.
* @return Volume (must be between 0.0 and 1.0)
*/
inline float get_volume() { return _volume; }
/**
* Get a free source-id
* @return NO_SOURCE if no source is available
*/
unsigned int request_source();
/**
* Free an source-id for future use
* @param source source-id to free
*/
void release_source( unsigned int source );
/**
* Get a free buffer-id
* The buffer-id will be asigned to the sample by calling this function.
* @param sample Pointer to an audio sample to assign the buffer-id to
* @return NO_BUFFER if loading of the buffer failed.
*/
unsigned int request_buffer(SGSoundSample *sample);
/**
* Free an buffer-id for this sample
* @param sample Pointer to an audio sample for which to free the buffer
*/
void release_buffer( SGSoundSample *sample );
/**
* Test if the position of the sound manager has changed.
* The value will be set to false upon the next call to update_late()
* @return true if the position has changed
*/
inline bool has_changed() { return _changed; }
/**
* Some implementations seem to need the velocity miltyplied by a
* factor of 100 to make them distinct. I've not found if this is
* a problem in the implementation or in out code. Until then
* this function is used to detect the problematic implementations.
*/
inline bool bad_doppler_effect() { return _bad_doppler; }
/**
* Load a sample file and return it's configuration and data.
* @param samplepath Path to the file to load
* @param data Pointer to a variable that points to the allocated data
* @param format Pointer to a vairable that gets the format
* @param size Pointer to a vairable that gets the sample size in bytes
* @param freq Pointer to a vairable that gets the sample frequency in Herz
* @return true if succesful, false on error
*/
bool load(string &samplepath, void **data, int *format,
size_t *size, int *freq );
/**
* Get a list of available playback devices.
*/
std::vector<const char*> get_available_devices();
/**
* Get the current vendor or rendering backend.
*/
const std::string& get_vendor() { return _vendor; }
const std::string& get_renderer() { return _renderer; }
private:
static int _alut_init;
bool _working;
bool _active;
bool _changed;
float _volume;
aaxConfig _config;
// Position of the listener.
SGVec3d _absolute_pos;
SGVec3d _offset_pos;
SGVec3d _base_pos;
SGGeod _geod_pos;
// Velocity of the listener.
SGVec3d _velocity;
// Orientation of the listener.
// first 3 elements are "at" vector, second 3 are "up" vector
SGQuatd _orientation;
sample_group_map _sample_groups;
buffer_map _buffers;
std::vector<aaxEmitter> _free_sources;
std::vector<aaxEmitter> _sources_in_use;
bool _bad_doppler;
std::string _renderer;
std::string _vendor;
void update_pos_and_orientation();
void update_sample_config( SGSampleGroup *sound );
};
#endif // _SG_SOUNDMGR_AAX_HXX