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Extract the sound code from FlightGear and move it to SimGear

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This commit is contained in:
ehofman 2003-05-09 18:44:33 +00:00
parent 228d6b2f29
commit 5ecfcca7e4
21 changed files with 47 additions and 1175 deletions
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5
src/ATC/ATC.cxx
View file

@ -18,9 +18,10 @@
// along with this program; if not, write to the Free Software // along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#include <simgear/sound/soundmgr.hxx>
#include <Main/fgfs.hxx> #include <Main/fgfs.hxx>
#include <Main/fg_props.hxx> #include <Main/fg_props.hxx>
#include <Sound/soundmgr.hxx>
#include "ATC.hxx" #include "ATC.hxx"
#include "ATCdisplay.hxx" #include "ATCdisplay.hxx"
@ -73,7 +74,7 @@ void FGATC::Render(string msg, string refname, bool repeating) {
int len; int len;
unsigned char* buf = vPtr->WriteMessage((char*)msg.c_str(), len, voice); unsigned char* buf = vPtr->WriteMessage((char*)msg.c_str(), len, voice);
if(voice) { if(voice) {
FGSimpleSound* simple = new FGSimpleSound(buf, len); SimpleSound* simple = new SimpleSound(buf, len);
// TODO - at the moment the volume is always set off comm1 // TODO - at the moment the volume is always set off comm1
// and can't be changed after the transmission has started. // and can't be changed after the transmission has started.
simple->set_volume(5.0 * fgGetDouble("/radios/comm[0]/volume")); simple->set_volume(5.0 * fgGetDouble("/radios/comm[0]/volume"));

2
src/Aircraft/aircraft.cxx
View file

@ -36,8 +36,6 @@
#include <Main/globals.hxx> #include <Main/globals.hxx>
#include <Main/fg_props.hxx> #include <Main/fg_props.hxx>
#include <Main/viewmgr.hxx> #include <Main/viewmgr.hxx>
#include <Sound/fg_fx.hxx>
#include <Sound/soundmgr.hxx>
#include <Cockpit/panel.hxx> #include <Cockpit/panel.hxx>
#include <Cockpit/hud.hxx> #include <Cockpit/hud.hxx>
#include <Cockpit/panel_io.hxx> #include <Cockpit/panel_io.hxx>

4
src/Cockpit/kr_87.cxx
View file

@ -445,7 +445,7 @@ void FGKR_87::update( double dt ) {
// play station ident via audio system if on + ant mode, // play station ident via audio system if on + ant mode,
// otherwise turn it off // otherwise turn it off
if ( vol_btn >= 0.01 && audio_btn ) { if ( vol_btn >= 0.01 && audio_btn ) {
FGSimpleSound *sound; SimpleSound *sound;
sound = globals->get_soundmgr()->find( "adf-ident" ); sound = globals->get_soundmgr()->find( "adf-ident" );
if ( sound != NULL ) { if ( sound != NULL ) {
if ( !adf_btn ) { if ( !adf_btn ) {
@ -514,7 +514,7 @@ void FGKR_87::search() {
if ( globals->get_soundmgr()->exists( "adf-ident" ) ) { if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
globals->get_soundmgr()->remove( "adf-ident" ); globals->get_soundmgr()->remove( "adf-ident" );
} }
FGSimpleSound *sound; SimpleSound *sound;
sound = morse.make_ident( trans_ident, LO_FREQUENCY ); sound = morse.make_ident( trans_ident, LO_FREQUENCY );
sound->set_volume( 0.3 ); sound->set_volume( 0.3 );
globals->get_soundmgr()->add( sound, "adf-ident" ); globals->get_soundmgr()->add( sound, "adf-ident" );

6
src/Cockpit/marker_beacon.cxx
View file

@ -193,7 +193,7 @@ void FGMarkerBeacon::search()
// cout << "OUTER MARKER" << endl; // cout << "OUTER MARKER" << endl;
if ( last_beacon != FGMkrBeacon::OUTER ) { if ( last_beacon != FGMkrBeacon::OUTER ) {
if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) { if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
FGSimpleSound *sound = beacon.get_outer(); SimpleSound *sound = beacon.get_outer();
sound->set_volume( 0.3 ); sound->set_volume( 0.3 );
globals->get_soundmgr()->add( sound, "outer-marker" ); globals->get_soundmgr()->add( sound, "outer-marker" );
} }
@ -210,7 +210,7 @@ void FGMarkerBeacon::search()
// cout << "MIDDLE MARKER" << endl; // cout << "MIDDLE MARKER" << endl;
if ( last_beacon != FGMkrBeacon::MIDDLE ) { if ( last_beacon != FGMkrBeacon::MIDDLE ) {
if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) { if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
FGSimpleSound *sound = beacon.get_middle(); SimpleSound *sound = beacon.get_middle();
sound->set_volume( 0.3 ); sound->set_volume( 0.3 );
globals->get_soundmgr()->add( sound, "middle-marker" ); globals->get_soundmgr()->add( sound, "middle-marker" );
} }
@ -227,7 +227,7 @@ void FGMarkerBeacon::search()
// cout << "INNER MARKER" << endl; // cout << "INNER MARKER" << endl;
if ( last_beacon != FGMkrBeacon::INNER ) { if ( last_beacon != FGMkrBeacon::INNER ) {
if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) { if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
FGSimpleSound *sound = beacon.get_inner(); SimpleSound *sound = beacon.get_inner();
sound->set_volume( 0.3 ); sound->set_volume( 0.3 );
globals->get_soundmgr()->add( sound, "inner-marker" ); globals->get_soundmgr()->add( sound, "inner-marker" );
} }

6
src/Cockpit/navcom.cxx
View file

@ -410,7 +410,7 @@ FGNavCom::update(double dt)
if ( power_btn && (bus_power->getDoubleValue() > 1.0) if ( power_btn && (bus_power->getDoubleValue() > 1.0)
&& nav_ident_btn && audio_btn ) && nav_ident_btn && audio_btn )
{ {
FGSimpleSound *sound; SimpleSound *sound;
sound = globals->get_soundmgr()->find( nav_fx_name ); sound = globals->get_soundmgr()->find( nav_fx_name );
if ( sound != NULL ) { if ( sound != NULL ) {
sound->set_volume( nav_vol_btn ); sound->set_volume( nav_vol_btn );
@ -522,7 +522,7 @@ void FGNavCom::search()
if ( globals->get_soundmgr()->exists( nav_fx_name ) ) { if ( globals->get_soundmgr()->exists( nav_fx_name ) ) {
globals->get_soundmgr()->remove( nav_fx_name ); globals->get_soundmgr()->remove( nav_fx_name );
} }
FGSimpleSound *sound; SimpleSound *sound;
sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY ); sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY );
sound->set_volume( 0.3 ); sound->set_volume( 0.3 );
globals->get_soundmgr()->add( sound, nav_fx_name ); globals->get_soundmgr()->add( sound, nav_fx_name );
@ -572,7 +572,7 @@ void FGNavCom::search()
if ( globals->get_soundmgr()->exists( nav_fx_name ) ) { if ( globals->get_soundmgr()->exists( nav_fx_name ) ) {
globals->get_soundmgr()->remove( nav_fx_name ); globals->get_soundmgr()->remove( nav_fx_name );
} }
FGSimpleSound *sound; SimpleSound *sound;
sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY ); sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY );
sound->set_volume( 0.3 ); sound->set_volume( 0.3 );
if ( globals->get_soundmgr()->add( sound, nav_fx_name ) ) { if ( globals->get_soundmgr()->add( sound, nav_fx_name ) ) {

2
src/Main/Makefile.am
View file

@ -90,7 +90,7 @@ fgfs_LDADD = \
$(WEATHER_LIBS) \ $(WEATHER_LIBS) \
-lsgroute -lsgsky -lsgephem -lsgmodel -lsgtiming -lsgio -lsgscreen \ -lsgroute -lsgsky -lsgephem -lsgmodel -lsgtiming -lsgio -lsgscreen \
-lsgmath -lsgbucket -lsgprops -lsgdebug -lsgmagvar -lsgmisc -lsgxml \ -lsgmath -lsgbucket -lsgprops -lsgdebug -lsgmagvar -lsgmisc -lsgxml \
-lsgserial \ -lsgsound -lsgserial \
$(THREAD_LIBS) \ $(THREAD_LIBS) \
-lplibpu -lplibfnt -lplibjs -lplibnet -lplibssg -lplibsg -lplibul \ -lplibpu -lplibfnt -lplibjs -lplibnet -lplibssg -lplibsg -lplibul \
$(PSL_LIBS) \ $(PSL_LIBS) \

6
src/Main/fg_init.cxx
View file

@ -110,7 +110,6 @@
#include <Scripting/scriptmgr.hxx> #include <Scripting/scriptmgr.hxx>
#endif #endif
#include <Sound/fg_fx.hxx> #include <Sound/fg_fx.hxx>
#include <Sound/soundmgr.hxx>
#include <Systems/system_mgr.hxx> #include <Systems/system_mgr.hxx>
#include <Time/FGEventMgr.hxx> #include <Time/FGEventMgr.hxx>
#include <Time/light.hxx> #include <Time/light.hxx>
@ -144,6 +143,9 @@
SG_USING_STD(string); SG_USING_STD(string);
class Sound;
extern const char *default_root; extern const char *default_root;
#ifdef FG_USE_CLOUDS_3D #ifdef FG_USE_CLOUDS_3D
@ -1537,7 +1539,7 @@ bool fgInitSubsystems() {
// Initialize the sound subsystem. // Initialize the sound subsystem.
//////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////
globals->set_soundmgr(new FGSoundMgr); globals->set_soundmgr(new SoundMgr);
globals->get_soundmgr()->init(); globals->get_soundmgr()->init();
globals->get_soundmgr()->bind(); globals->get_soundmgr()->bind();

4
src/Main/fg_props.cxx
View file

@ -28,6 +28,7 @@
#include <simgear/magvar/magvar.hxx> #include <simgear/magvar/magvar.hxx>
#include <simgear/timing/sg_time.hxx> #include <simgear/timing/sg_time.hxx>
#include <simgear/misc/sg_path.hxx> #include <simgear/misc/sg_path.hxx>
#include <simgear/sound/soundmgr.hxx>
#include STL_IOSTREAM #include STL_IOSTREAM
@ -43,7 +44,6 @@
#include <Objects/matlib.hxx> #include <Objects/matlib.hxx>
#include <GUI/gui.h> #include <GUI/gui.h>
#include <Sound/soundmgr.hxx>
#include "globals.hxx" #include "globals.hxx"
#include "fgfs.hxx" #include "fgfs.hxx"
@ -234,7 +234,7 @@ setFreeze (bool f)
frozen = f; frozen = f;
// Stop sound on a pause // Stop sound on a pause
FGSoundMgr *s = globals->get_soundmgr(); SoundMgr *s = globals->get_soundmgr();
if ( s != NULL ) { if ( s != NULL ) {
if ( f ) { if ( f ) {
s->pause(); s->pause();

8
src/Main/globals.hxx
View file

@ -55,6 +55,7 @@ class SGMagVar;
class SGPropertyNode; class SGPropertyNode;
class SGRoute; class SGRoute;
class SGTime; class SGTime;
class SoundMgr;
class FGAIMgr; class FGAIMgr;
class FGATCMgr; class FGATCMgr;
@ -73,7 +74,6 @@ class FGMultiplayRxMgr;
class FGMultiplayTxMgr; class FGMultiplayTxMgr;
#endif #endif
class FGPanel; class FGPanel;
class FGSoundMgr;
class FGTileMgr; class FGTileMgr;
class FGViewMgr; class FGViewMgr;
class FGViewer; class FGViewer;
@ -130,7 +130,7 @@ private:
FGPanel *current_panel; FGPanel *current_panel;
// sound manager // sound manager
FGSoundMgr *soundmgr; SoundMgr *soundmgr;
// environment information // environment information
FGEnvironmentMgr * environment_mgr; FGEnvironmentMgr * environment_mgr;
@ -257,8 +257,8 @@ public:
inline FGPanel *get_current_panel() const { return current_panel; } inline FGPanel *get_current_panel() const { return current_panel; }
inline void set_current_panel( FGPanel *cp ) { current_panel = cp; } inline void set_current_panel( FGPanel *cp ) { current_panel = cp; }
inline FGSoundMgr *get_soundmgr() const { return soundmgr; } inline SoundMgr *get_soundmgr() const { return soundmgr; }
inline void set_soundmgr( FGSoundMgr *sm ) { soundmgr = sm; } inline void set_soundmgr( SoundMgr *sm ) { soundmgr = sm; }
inline FGControls *get_controls() const { return controls; } inline FGControls *get_controls() const { return controls; }
inline void set_controls( FGControls *c ) { controls = c; } inline void set_controls( FGControls *c ) { controls = c; }

1
src/Main/main.cxx
View file

@ -121,7 +121,6 @@ SG_USING_STD(endl);
#include <Scenery/scenery.hxx> #include <Scenery/scenery.hxx>
#include <Scenery/tilemgr.hxx> #include <Scenery/tilemgr.hxx>
#ifdef ENABLE_AUDIO_SUPPORT #ifdef ENABLE_AUDIO_SUPPORT
# include <Sound/soundmgr.hxx>
# include <Sound/fg_fx.hxx> # include <Sound/fg_fx.hxx>
# include <Sound/morse.hxx> # include <Sound/morse.hxx>
#endif #endif

4
src/Sound/Makefile.am
View file

@ -2,9 +2,7 @@ noinst_LIBRARIES = libSound.a
libSound_a_SOURCES = \ libSound_a_SOURCES = \
beacon.cxx beacon.hxx \ beacon.cxx beacon.hxx \
fg_sound.cxx fg_sound.hxx \
fg_fx.cxx fg_fx.hxx \ fg_fx.cxx fg_fx.hxx \
morse.cxx morse.hxx \ morse.cxx morse.hxx
soundmgr.cxx soundmgr.hxx
INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src

6
src/Sound/beacon.cxx
View file

@ -51,7 +51,7 @@ bool FGBeacon::init() {
ptr += INNER_DIT_LEN; ptr += INNER_DIT_LEN;
} }
inner = new FGSimpleSound( inner_buf, INNER_SIZE ); inner = new SimpleSound( inner_buf, INNER_SIZE );
// Make middle marker beacon sound // Make middle marker beacon sound
len= (int)(MIDDLE_DIT_LEN / 2.0 ); len= (int)(MIDDLE_DIT_LEN / 2.0 );
@ -69,7 +69,7 @@ bool FGBeacon::init() {
ptr += MIDDLE_DIT_LEN; ptr += MIDDLE_DIT_LEN;
memcpy( ptr, middle_dah, MIDDLE_DAH_LEN ); memcpy( ptr, middle_dah, MIDDLE_DAH_LEN );
middle = new FGSimpleSound( middle_buf, MIDDLE_SIZE ); middle = new SimpleSound( middle_buf, MIDDLE_SIZE );
// Make outer marker beacon sound // Make outer marker beacon sound
len= (int)(OUTER_DAH_LEN * 3.0 / 4.0 ); len= (int)(OUTER_DAH_LEN * 3.0 / 4.0 );
@ -82,7 +82,7 @@ bool FGBeacon::init() {
ptr += OUTER_DAH_LEN; ptr += OUTER_DAH_LEN;
memcpy( ptr, outer_dah, OUTER_DAH_LEN ); memcpy( ptr, outer_dah, OUTER_DAH_LEN );
outer = new FGSimpleSound( outer_buf, OUTER_SIZE ); outer = new SimpleSound( outer_buf, OUTER_SIZE );
return true; return true;
} }

14
src/Sound/beacon.hxx
View file

@ -31,12 +31,12 @@
#endif #endif
#include <simgear/compiler.h> #include <simgear/compiler.h>
#include <simgear/sound/soundmgr.hxx>
#include <plib/sl.h> #include <plib/sl.h>
#include <plib/sm.h> #include <plib/sm.h>
#include "morse.hxx" #include "morse.hxx"
#include "soundmgr.hxx"
// Quoting from http://www.smartregs.com/data/sa326.htm // Quoting from http://www.smartregs.com/data/sa326.htm
@ -100,9 +100,9 @@ private:
unsigned char middle_buf[ MIDDLE_SIZE ] ; unsigned char middle_buf[ MIDDLE_SIZE ] ;
unsigned char outer_buf[ OUTER_SIZE ] ; unsigned char outer_buf[ OUTER_SIZE ] ;
FGSimpleSound *inner; SimpleSound *inner;
FGSimpleSound *middle; SimpleSound *middle;
FGSimpleSound *outer; SimpleSound *outer;
public: public:
@ -112,9 +112,9 @@ public:
// allocate and initialize sound samples // allocate and initialize sound samples
bool init(); bool init();
FGSimpleSound *get_inner() { return inner; } SimpleSound *get_inner() { return inner; }
FGSimpleSound *get_middle() { return middle; } SimpleSound *get_middle() { return middle; }
FGSimpleSound *get_outer() { return outer; } SimpleSound *get_outer() { return outer; }
}; };

10
src/Sound/fg_fx.cxx
View file

@ -32,11 +32,11 @@
#endif #endif
#include <simgear/misc/sg_path.hxx> #include <simgear/misc/sg_path.hxx>
#include <simgear/props/props.hxx> #include <simgear/props/props.hxx>
#include <simgear/sound/sound.hxx>
#include <Main/fg_props.hxx> #include <Main/fg_props.hxx>
#include "fg_fx.hxx" #include "fg_fx.hxx"
#include "fg_sound.hxx"
FGFX::FGFX () FGFX::FGFX ()
@ -62,7 +62,7 @@ FGFX::init()
} }
path.append(path_str.c_str()); path.append(path_str.c_str());
SG_LOG(SG_GENERAL, SG_INFO, "Reading Instrument " << node->getName() SG_LOG(SG_GENERAL, SG_INFO, "Reading sound " << node->getName()
<< " from " << path.str()); << " from " << path.str());
SGPropertyNode root; SGPropertyNode root;
@ -76,8 +76,10 @@ FGFX::init()
node = root.getNode("fx"); node = root.getNode("fx");
for (i = 0; i < node->nChildren(); i++) { for (i = 0; i < node->nChildren(); i++) {
FGSound *sound = new FGSound(); Sound *sound = new Sound();
sound->init(node->getChild(i));
sound->init(globals->get_props(), node->getChild(i),
globals->get_soundmgr(), globals->get_fg_root());
_sound.push_back(sound); _sound.push_back(sound);
} }

4
src/Sound/fg_fx.hxx
View file

@ -26,7 +26,7 @@
#include <Main/fgfs.hxx> #include <Main/fgfs.hxx>
class FGSound; class Sound;
/** /**
* Generator for FlightGear sound effects. * Generator for FlightGear sound effects.
@ -51,7 +51,7 @@ public:
private: private:
vector<FGSound *> _sound; vector<Sound *> _sound;
}; };

418
src/Sound/fg_sound.cxx
View file

@ -1,418 +0,0 @@
// fg_sound.cxx -- Sound class implementation
//
// Started by Erik Hofman, February 2002
// (Reuses some code from fg_fx.cxx created by David Megginson)
//
// Copyright (C) 2002 Curtis L. Olson - curt@flightgear.org
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
#include <simgear/compiler.h>
#ifdef SG_HAVE_STD_INCLUDES
# include <cmath>
#else
# include <math.h>
#endif
#include <string.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/props/condition.hxx>
#include <Main/fg_props.hxx>
#include "fg_sound.hxx"
// static double _fg_lin(double v) { return v; }
static double _fg_inv(double v) { return (v == 0) ? 1e99 : 1/v; }
static double _fg_abs(double v) { return (v >= 0) ? v : -v; }
static double _fg_sqrt(double v) { return (v < 0) ? sqrt(-v) : sqrt(v); }
static double _fg_log10(double v) { return (v < 1) ? 0 : log10(v); }
static double _fg_log(double v) { return (v < 1) ? 0 : log(v); }
// static double _fg_sqr(double v) { return pow(v, 2); }
// static double _fg_pow3(double v) { return pow(v, 3); }
static const struct {
char *name;
double (*fn)(double);
} __fg_snd_fn[] = {
// {"lin", _fg_lin},
{"inv", _fg_inv},
{"abs", _fg_abs},
{"sqrt", _fg_sqrt},
{"log", _fg_log10},
{"ln", _fg_log},
// {"sqr", _fg_sqr},
// {"pow3", _fg_pow3},
{"", NULL}
};
FGSound::FGSound()
: _sample(NULL),
_condition(NULL),
_property(NULL),
_active(false),
_name(""),
_mode(FGSound::ONCE),
_prev_value(0),
_dt_play(0.0),
_dt_stop(0.0),
_stopping(0.0)
{
}
FGSound::~FGSound()
{
_mgr->get_scheduler()->stopSample(_sample->get_sample());
if (_property)
delete _property;
if (_condition)
delete _condition;
_volume.clear();
_pitch.clear();
delete _sample;
}
void
FGSound::init(SGPropertyNode *node)
{
//
// set global sound properties
//
_name = node->getStringValue("name", "");
SG_LOG(SG_GENERAL, SG_INFO, "Loading sound information for: " << _name );
const char *mode_str = node->getStringValue("mode", "");
if ( !strcmp(mode_str, "looped") ) {
_mode = FGSound::LOOPED;
} else if ( !strcmp(mode_str, "in-transit") ) {
_mode = FGSound::IN_TRANSIT;
} else {
_mode = FGSound::ONCE;
if ( strcmp(mode_str, "") )
SG_LOG(SG_GENERAL,SG_INFO, " Unknown sound mode, default to 'once'");
}
_property = fgGetNode(node->getStringValue("property", ""), true);
SGPropertyNode *condition = node->getChild("condition");
if (condition != NULL)
_condition = fgReadCondition(globals->get_props(), condition);
if (!_property && !_condition)
SG_LOG(SG_GENERAL, SG_WARN,
" Neither a condition nor a property specified");
//
// set volume properties
//
unsigned int i;
float v = 0.0;
vector<SGPropertyNode_ptr> kids = node->getChildren("volume");
for (i = 0; (i < kids.size()) && (i < FGSound::MAXPROP); i++) {
_snd_prop volume = {NULL, NULL, NULL, 1.0, 0.0, 0.0, 0.0, false};
if (strcmp(kids[i]->getStringValue("property"), ""))
volume.prop = fgGetNode(kids[i]->getStringValue("property", ""), true);
const char *intern_str = kids[i]->getStringValue("internal", "");
if (!strcmp(intern_str, "dt_play"))
volume.intern = &_dt_play;
else if (!strcmp(intern_str, "dt_stop"))
volume.intern = &_dt_stop;
if ((volume.factor = kids[i]->getDoubleValue("factor", 1.0)) != 0.0)
if (volume.factor < 0.0) {
volume.factor = -volume.factor;
volume.subtract = true;
}
const char *type_str = kids[i]->getStringValue("type", "");
if ( strcmp(type_str, "") ) {
for (int j=0; __fg_snd_fn[j].fn; j++)
if ( !strcmp(type_str, __fg_snd_fn[j].name) ) {
volume.fn = __fg_snd_fn[j].fn;
break;
}
if (!volume.fn)
SG_LOG(SG_GENERAL,SG_INFO,
" Unknown volume type, default to 'lin'");
}
volume.offset = kids[i]->getDoubleValue("offset", 0.0);
if ((volume.min = kids[i]->getDoubleValue("min", 0.0)) < 0.0)
SG_LOG( SG_GENERAL, SG_WARN,
"Volume minimum value below 0. Forced to 0.");
volume.max = kids[i]->getDoubleValue("max", 0.0);
if (volume.max && (volume.max < volume.min) )
SG_LOG(SG_GENERAL,SG_ALERT,
" Volume maximum below minimum. Neglected.");
_volume.push_back(volume);
v += volume.offset;
}
//
// set pitch properties
//
float p = 0.0;
kids = node->getChildren("pitch");
for (i = 0; (i < kids.size()) && (i < FGSound::MAXPROP); i++) {
_snd_prop pitch = {NULL, NULL, NULL, 1.0, 1.0, 0.0, 0.0, false};
if (strcmp(kids[i]->getStringValue("property", ""), ""))
pitch.prop = fgGetNode(kids[i]->getStringValue("property", ""), true);
const char *intern_str = kids[i]->getStringValue("internal", "");
if (!strcmp(intern_str, "dt_play"))
pitch.intern = &_dt_play;
else if (!strcmp(intern_str, "dt_stop"))
pitch.intern = &_dt_stop;
if ((pitch.factor = kids[i]->getDoubleValue("factor", 1.0)) != 0.0)
if (pitch.factor < 0.0) {
pitch.factor = -pitch.factor;
pitch.subtract = true;
}
const char *type_str = kids[i]->getStringValue("type", "");
if ( strcmp(type_str, "") ) {
for (int j=0; __fg_snd_fn[j].fn; j++)
if ( !strcmp(type_str, __fg_snd_fn[j].name) ) {
pitch.fn = __fg_snd_fn[j].fn;
break;
}
if (!pitch.fn)
SG_LOG(SG_GENERAL,SG_INFO,
" Unknown pitch type, default to 'lin'");
}
pitch.offset = kids[i]->getDoubleValue("offset", 1.0);
if ((pitch.min = kids[i]->getDoubleValue("min", 0.0)) < 0.0)
SG_LOG(SG_GENERAL,SG_WARN,
" Pitch minimum value below 0. Forced to 0.");
pitch.max = kids[i]->getDoubleValue("max", 0.0);
if (pitch.max && (pitch.max < pitch.min) )
SG_LOG(SG_GENERAL,SG_ALERT,
" Pitch maximum below minimum. Neglected");
_pitch.push_back(pitch);
p += pitch.offset;
}
//
// Initialize the sample
//
_mgr = globals->get_soundmgr();
if ((_sample = _mgr->find(_name)) == NULL)
_sample = _mgr->add(_name, node->getStringValue("path", ""));
_sample->set_volume(v);
_sample->set_pitch(p);
}
void
FGSound::bind ()
{
}
void
FGSound::unbind ()
{
}
void
FGSound::update (double dt)
{
double curr_value = 0.0;
//
// If the state changes to false, stop playing.
//
if (_property)
curr_value = _property->getDoubleValue();
if ( // Lisp, anyone?
(_condition && !_condition->test()) ||
(!_condition && _property &&
(
!curr_value ||
( (_mode == FGSound::IN_TRANSIT) && (curr_value == _prev_value) )
)
)
)
{
if ((_mode != FGSound::IN_TRANSIT) || (_stopping > MAX_TRANSIT_TIME)) {
if (_sample->is_playing()) {
SG_LOG(SG_GENERAL, SG_INFO, "Stopping audio after " << _dt_play
<< " sec: " << _name );
_sample->stop( _mgr->get_scheduler() );
}
_active = false;
_dt_stop += dt;
_dt_play = 0.0;
} else {
_stopping += dt;
}
return;
}
//
// If the mode is ONCE and the sound is still playing,
// we have nothing to do anymore.
//
if (_active && (_mode == FGSound::ONCE)) {
if (!_sample->is_playing()) {
_dt_stop += dt;
_dt_play = 0.0;
} else {
_dt_play += dt;
}
return;
}
//
// Update the playing time, cache the current value and
// clear the delay timer.
//
_dt_play += dt;
_prev_value = curr_value;
_stopping = 0.0;
//
// Update the volume
//
int i;
int max = _volume.size();
double volume = 1.0;
double volume_offset = 0.0;
for(i = 0; i < max; i++) {
double v = 1.0;
if (_volume[i].prop)
v = _volume[i].prop->getDoubleValue();
else if (_volume[i].intern)
v = *_volume[i].intern;
if (_volume[i].fn)
v = _volume[i].fn(v);
v *= _volume[i].factor;
if (_volume[i].max && (v > _volume[i].max))
v = _volume[i].max;
else if (v < _volume[i].min)
v = _volume[i].min;
if (_volume[i].subtract) // Hack!
volume = _volume[i].offset - v;
else {
volume_offset += _volume[i].offset;
volume *= v;
}
}
//
// Update the pitch
//
max = _pitch.size();
double pitch = 1.0;
double pitch_offset = 0.0;
for(i = 0; i < max; i++) {
double p = 1.0;
if (_pitch[i].prop)
p = _pitch[i].prop->getDoubleValue();
else if (_pitch[i].intern)
p = *_pitch[i].intern;
if (_pitch[i].fn)
p = _pitch[i].fn(p);
p *= _pitch[i].factor;
if (_pitch[i].max && (p > _pitch[i].max))
p = _pitch[i].max;
else if (p < _pitch[i].min)
p = _pitch[i].min;
if (_pitch[i].subtract) // Hack!
pitch = _pitch[i].offset - p;
else {
pitch_offset += _pitch[i].offset;
pitch *= p;
}
}
//
// Change sample state
//
_sample->set_pitch( pitch_offset + pitch );
_sample->set_volume( volume_offset + volume );
//
// Do we need to start playing the sample?
//
if (!_active) {
if (_mode == FGSound::ONCE)
_sample->play(_mgr->get_scheduler(), false);
else
_sample->play(_mgr->get_scheduler(), true);
SG_LOG(SG_GENERAL, SG_INFO, "Playing audio after " << _dt_stop
<< " sec: " << _name);
SG_LOG(SG_GENERAL, SG_BULK,
"Playing " << ((_mode == ONCE) ? "once" : "looped"));
_active = true;
_dt_stop = 0.0;
}
}

100
src/Sound/fg_sound.hxx
View file

@ -1,100 +0,0 @@
// fg_sound.hxx -- Sound class implementation
//
// Started by Erik Hofman, February 2002
//
// Copyright (C) 2002 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
#ifndef __FGSOUND_HXX
#define __FGSOUND_HXX 1
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/compiler.h>
#include <simgear/props/condition.hxx>
#include <Main/fgfs.hxx>
#include <Main/globals.hxx>
#include "soundmgr.hxx"
static const double MAX_TRANSIT_TIME = 0.1; // 100 ms.
/**
* Class for handling one sound event.
*
*/
class FGSound
{
public:
FGSound();
virtual ~FGSound();
virtual void init (SGPropertyNode *);
virtual void bind ();
virtual void unbind ();
virtual void update (double dt);
void stop();
protected:
enum { MAXPROP=5 };
enum { ONCE=0, LOOPED, IN_TRANSIT };
enum { LEVEL=0, INVERTED, FLIPFLOP };
// Sound properties
typedef struct {
SGPropertyNode * prop;
double (*fn)(double);
double *intern;
double factor;
double offset;
double min;
double max;
bool subtract;
} _snd_prop;
private:
FGSoundMgr * _mgr;
FGSimpleSound * _sample;
FGCondition * _condition;
SGPropertyNode * _property;
bool _active;
string _name;
int _mode;
double _prev_value;
double _dt_play;
double _dt_stop;
double _stopping; // time after the sound should have stopped.
// This is usefull for lost packets in in-trasit mode.
vector<_snd_prop> _volume;
vector<_snd_prop> _pitch;
};
#endif

6
src/Sound/morse.cxx
View file

@ -165,8 +165,8 @@ bool FGMorse::cust_init(const int freq ) {
} }
// make a FGSimpleSound morse code transmission for the specified string // make a SimpleSound morse code transmission for the specified string
FGSimpleSound *FGMorse::make_ident( const string& id, const int freq ) { SimpleSound *FGMorse::make_ident( const string& id, const int freq ) {
char *idptr = (char *)id.c_str(); char *idptr = (char *)id.c_str();
int length = 0; int length = 0;
@ -260,7 +260,7 @@ FGSimpleSound *FGMorse::make_ident( const string& id, const int freq ) {
buf_ptr += SPACE_SIZE; buf_ptr += SPACE_SIZE;
// 4. create the simple sound and return // 4. create the simple sound and return
FGSimpleSound *sample = new FGSimpleSound( buffer, length ); SimpleSound *sample = new SimpleSound( buffer, length );
return sample; return sample;
} }

7
src/Sound/morse.hxx
View file

@ -29,12 +29,11 @@
#endif #endif
#include <simgear/compiler.h> #include <simgear/compiler.h>
#include <simgear/sound/soundmgr.hxx>
#include <plib/sl.h> #include <plib/sl.h>
#include <plib/sm.h> #include <plib/sm.h>
#include "soundmgr.hxx"
// Quoting from http://www.kluft.com/~ikluft/ham/morse-intro.html by // Quoting from http://www.kluft.com/~ikluft/ham/morse-intro.html by
// Ian Kluft KO6YQ <ikluft@kluft.com> // Ian Kluft KO6YQ <ikluft@kluft.com>
@ -124,8 +123,8 @@ public:
// allocate and initialize sound samples // allocate and initialize sound samples
bool init(); bool init();
// make a FGSimpleSound morse code transmission for the specified string // make a SimpleSound morse code transmission for the specified string
FGSimpleSound *make_ident( const string& id, SimpleSound *make_ident( const string& id,
const int freq = LO_FREQUENCY ); const int freq = LO_FREQUENCY );
}; };

406
src/Sound/soundmgr.cxx
View file

@ -1,406 +0,0 @@
// 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.
//
// Copyright (C) 2001 Curtis L. Olson - curt@flightgear.org
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
#include <Main/globals.hxx>
#include "soundmgr.hxx"
#define FG_SOUND_SAFETY_MULT 3
#define FG_MAX_SOUND_SAFETY ( 1.0 / FG_SOUND_SAFETY_MULT )
//
// SimpleSound
//
// constructor
FGSimpleSound::FGSimpleSound( string file )
: pitch(1.0),
volume(1.0)
{
SGPath slfile( globals->get_fg_root() );
slfile.append( file );
sample = new slSample ( (char *)slfile.c_str() );
pitch_envelope = new slEnvelope( 1, SL_SAMPLE_ONE_SHOT );
volume_envelope = new slEnvelope( 1, SL_SAMPLE_ONE_SHOT );
pitch_envelope->setStep ( 0, 0.01, 1.0 );
volume_envelope->setStep ( 0, 0.01, 1.0 );
}
FGSimpleSound::FGSimpleSound( unsigned char *buffer, int len )
: pitch(1.0),
volume(1.0)
{
sample = new slSample ( buffer, len );
pitch_envelope = new slEnvelope( 1, SL_SAMPLE_ONE_SHOT );
volume_envelope = new slEnvelope( 1, SL_SAMPLE_ONE_SHOT );
pitch_envelope->setStep ( 0, 0.01, 1.0 );
volume_envelope->setStep ( 0, 0.01, 1.0 );
}
// destructor
FGSimpleSound::~FGSimpleSound() {
delete pitch_envelope;
delete volume_envelope;
delete sample;
}
void FGSimpleSound::play( slScheduler *sched, bool looped ) {
// make sure sound isn't already playing
if ( sample->getPlayCount() > 0 ) {
sched->stopSample(sample);
// return;
}
if ( looped ) {
sched->loopSample(sample);
} else {
sched->playSample(sample);
}
sched->addSampleEnvelope(sample, 0, 0, pitch_envelope, SL_PITCH_ENVELOPE);
sched->addSampleEnvelope(sample, 0, 1, volume_envelope, SL_VOLUME_ENVELOPE);
}
void FGSimpleSound::stop( slScheduler *sched, bool quick ) {
sched->stopSample( sample );
}
//
// Sound Manager
//
// constructor
FGSoundMgr::FGSoundMgr() {
audio_sched = new slScheduler( 8000 );
if ( audio_sched->notWorking() ) {
SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
} else {
audio_sched -> setMaxConcurrent ( 6 );
audio_mixer = new smMixer;
SG_LOG( SG_GENERAL, SG_INFO,
"Rate = " << audio_sched->getRate()
<< " Bps = " << audio_sched->getBps()
<< " Stereo = " << audio_sched->getStereo() );
}
}
// destructor
FGSoundMgr::~FGSoundMgr() {
//
// Remove the samples from the sample manager.
//
sample_map_iterator sample_current = samples.begin();
sample_map_iterator sample_end = samples.end();
for ( ; sample_current != sample_end; ++sample_current ) {
sample_ref *sr = sample_current->second;
audio_sched->stopSample(sr->sample);
delete sr->sample;
delete sr;
}
//
// Remove the sounds from the sound manager.
//
sound_map_iterator sound_current = sounds.begin();
sound_map_iterator sound_end = sounds.end();
for ( ; sound_current != sound_end; ++sound_current ) {
FGSimpleSound *s = sound_current->second;
audio_sched->stopSample(s->get_sample());
delete s->get_sample();
delete s;
}
delete audio_sched;
delete audio_mixer;
}
// initialize the sound manager
void FGSoundMgr::init() {
safety = FG_MAX_SOUND_SAFETY;
// audio_mixer -> setMasterVolume ( 80 ) ; /* 80% of max volume. */
audio_sched -> setSafetyMargin ( FG_SOUND_SAFETY_MULT * safety ) ;
//
// Remove the samples from the sample manager.
//
sample_map_iterator sample_current = samples.begin();
sample_map_iterator sample_end = samples.end();
for ( ; sample_current != sample_end; ++sample_current ) {
sample_ref *sr = sample_current->second;
audio_sched->stopSample(sr->sample);
delete sr->sample;
delete sr;
}
samples.clear();
//
// Remove the sounds from the sound manager.
//
sound_map_iterator sound_current = sounds.begin();
sound_map_iterator sound_end = sounds.end();
for ( ; sound_current != sound_end; ++sound_current ) {
FGSimpleSound *s = sound_current->second;
audio_sched->stopSample(s->get_sample());
delete s->get_sample();
delete s;
}
sounds.clear();
}
void FGSoundMgr::bind ()
{
// no properties yet
}
void FGSoundMgr::unbind ()
{
// no properties yet
}
// run the audio scheduler
void FGSoundMgr::update( double dt ) {
if ( dt > safety ) {
safety = dt;
} else {
safety = safety * 0.99 + dt * 0.01;
}
if ( safety > FG_MAX_SOUND_SAFETY ) {
safety = FG_MAX_SOUND_SAFETY;
}
// cout << "safety = " << safety << endl;
audio_sched -> setSafetyMargin ( FG_SOUND_SAFETY_MULT * safety ) ;
if ( !audio_sched->not_working() )
audio_sched -> update();
}
void
FGSoundMgr::pause ()
{
audio_sched->pauseSample(0, 0);
}
void
FGSoundMgr::resume ()
{
audio_sched->resumeSample(0, 0);
}
// add a sound effect, return true if successful
bool FGSoundMgr::add( FGSimpleSound *sound, const string& refname ) {
sound_map_iterator sound_it = sounds.find( refname );
if ( sound_it != sounds.end() ) {
// sound already exists
return false;
}
sample_map_iterator sample_it = samples.find( refname );
if ( sample_it != samples.end() ) {
// this sound has existed in the past and it's sample is still
// here, delete the sample so we can replace it.
samples.erase( sample_it );
}
sample_ref *sr = new sample_ref;
sr->n=1;
sr->sample = sound->get_sample();
samples[refname] = sr;
sounds[refname] = sound;
return true;
}
// add a sound from a file, return the sample if successful, else return NULL
FGSimpleSound *FGSoundMgr::add( const string& refname, const string &file ) {
FGSimpleSound *sound;
if (file.empty())
return NULL;
sample_map_iterator it = samples.find(file);
if (it == samples.end()) {
sound = new FGSimpleSound(file);
sounds[refname] = sound;
sample_ref *sr = new sample_ref;
sr->n=1;
sr->sample = sound->get_sample();
samples[file] = sr;
} else {
sample_ref *sr = it->second;
sr->n++;
sound =
new FGSimpleSound(sr->sample->getBuffer(), sr->sample->getLength());
sounds[refname] = sound;
}
return sound;
}
// remove a sound effect, return true if successful
bool FGSoundMgr::remove( const string& refname ) {
sound_map_iterator it = sounds.find( refname );
if ( it != sounds.end() ) {
// first stop the sound from playing (so we don't bomb the
// audio scheduler)
FGSimpleSound *sample = it->second;
// cout << "Playing " << sample->get_sample()->getPlayCount()
// << " instances!" << endl;
audio_sched->stopSample( sample->get_sample() );
audio_sched->addSampleEnvelope( sample->get_sample(), 0, 0,
NULL,
SL_PITCH_ENVELOPE );
audio_sched->addSampleEnvelope( sample->get_sample(), 0, 1,
NULL,
SL_VOLUME_ENVELOPE );
// must call audio_sched->update() after stopping the sound
// but before deleting it.
audio_sched -> update();
// cout << "Still playing " << sample->get_sample()->getPlayCount()
// << " instances!" << endl;
//
// FIXME:
// Due to the change in the sound manager, samples live
// until the sound manager gets removed.
//
// delete sample;
sounds.erase( it );
// cout << "sndmgr: removed -> " << refname << endl;
return true;
} else {
// cout << "sndmgr: failed remove -> " << refname << endl;
return false;
}
}
// return true of the specified sound exists in the sound manager system
bool FGSoundMgr::exists( const string& refname ) {
sound_map_iterator it = sounds.find( refname );
if ( it != sounds.end() ) {
return true;
} else {
return false;
}
}
// return a pointer to the FGSimpleSound if the specified sound exists
// in the sound manager system, otherwise return NULL
FGSimpleSound *FGSoundMgr::find( const string& refname ) {
sound_map_iterator it = sounds.find( refname );
if ( it != sounds.end() ) {
return it->second;
} else {
return NULL;
}
}
// tell the scheduler to play the indexed sample in a continuous
// loop
bool FGSoundMgr::play_looped( const string& refname ) {
FGSimpleSound *sample;
if ((sample = find( refname )) == NULL)
return false;
sample->play(audio_sched, true);
return true;
}
// tell the scheduler to play the indexed sample once
bool FGSoundMgr::play_once( const string& refname ) {
FGSimpleSound *sample;
if ((sample = find( refname )) == NULL)
return false;
sample->play(audio_sched, false);
return true;
}
// return true of the specified sound is currently being played
bool FGSoundMgr::is_playing( const string& refname ) {
FGSimpleSound *sample;
if ((sample = find( refname )) == NULL)
return false;
return (sample->get_sample()->getPlayCount() > 0 );
}
// immediate stop playing the sound
bool FGSoundMgr::stop( const string& refname ) {
FGSimpleSound *sample;
if ((sample = find( refname )) == NULL)
return false;
audio_sched->stopSample( sample->get_sample() );
return true;
}

203
src/Sound/soundmgr.hxx
View file

@ -1,203 +0,0 @@
// 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.
//
// Copyright (C) 2001 Curtis L. Olson - curt@flightgear.org
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
#ifndef _SOUNDMGR_HXX
#define _SOUNDMGR_HXX
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/compiler.h>
#include STL_STRING
#include <map>
#include <plib/sl.h>
#include <plib/sm.h>
#include <simgear/timing/timestamp.hxx>
#include <Main/fgfs.hxx>
SG_USING_STD(map);
SG_USING_STD(string);
// manages everything we need to know for an individual sound sample
class FGSimpleSound {
private:
slSample *sample;
slEnvelope *pitch_envelope;
slEnvelope *volume_envelope;
double pitch;
double volume;
public:
FGSimpleSound( string file );
FGSimpleSound( unsigned char *buffer, int len );
~FGSimpleSound();
void play( slScheduler *sched, bool looped );
void stop( slScheduler *sched, bool quick = true );
inline void play_once( slScheduler *sched ) { play( sched, false); }
inline void play_looped( slScheduler *sched ) { play( sched, true); }
inline bool is_playing( ) {
return ( sample->getPlayCount() > 0 );
}
inline double get_pitch() const { return pitch; }
inline void set_pitch( double p ) {
pitch = p;
pitch_envelope->setStep( 0, 0.01, pitch );
}
inline double get_volume() const { return volume; }
inline void set_volume( double v ) {
volume = v;
volume_envelope->setStep( 0, 0.01, volume );
}
inline slSample *get_sample() { return sample; }
inline slEnvelope *get_pitch_envelope() { return pitch_envelope; }
inline slEnvelope *get_volume_envelope() { return volume_envelope; }
};
typedef struct {
int n;
slSample *sample;
} sample_ref;
typedef map < string, sample_ref * > sample_map;
typedef sample_map::iterator sample_map_iterator;
typedef sample_map::const_iterator const_sample_map_iterator;
typedef map < string, FGSimpleSound * > sound_map;
typedef sound_map::iterator sound_map_iterator;
typedef sound_map::const_iterator const_sound_map_iterator;
class FGSoundMgr : public FGSubsystem
{
slScheduler *audio_sched;
smMixer *audio_mixer;
sound_map sounds;
sample_map samples;
double safety;
public:
FGSoundMgr();
~FGSoundMgr();
/**
* (re) initialize the sound manager.
*/
void init();
/**
* Bind properties for the sound manager.
*/
void bind ();
/**
* Unbind properties for the sound manager.
*/
void unbind ();
/**
* Run the audio scheduler.
*/
void update(double dt);
/**
* Pause all sounds.
*/
void pause ();
/**
* Resume all sounds.
*/
void resume ();
// is audio working?
inline bool is_working() const { return !audio_sched->notWorking(); }
// reinitialize the sound manager
inline void reinit() { init(); }
// add a sound effect, return true if successful
bool add( FGSimpleSound *sound, const string& refname);
// add a sound file, return the sample if successful, else return NULL
FGSimpleSound *add( const string& refname, const string& file = "" );
// remove a sound effect, return true if successful
bool remove( const string& refname );
// return true of the specified sound exists in the sound manager system
bool exists( const string& refname );
// return a pointer to the FGSimpleSound if the specified sound
// exists in the sound manager system, otherwise return NULL
FGSimpleSound *find( const string& refname );
// tell the scheduler to play the indexed sample in a continuous
// loop
bool play_looped( const string& refname );
// tell the scheduler to play the indexed sample once
bool play_once( const string& refname );
// return true of the specified sound is currently being played
bool is_playing( const string& refname );
// immediate stop playing the sound
bool stop( const string& refname );
// return the audio scheduler
inline slScheduler *get_scheduler( ) { return audio_sched; };
};
#endif // _SOUNDMGR_HXX