opengl_LIBS="$LIBS"
LIBS="$base_LIBS"
+dnl check for OpenAL libraries
+case "${host}" in
+*)
+ dnl default unix style machines
+
+ AC_SEARCH_LIBS(alGenBuffers, openal)
+ ;;
+
+esac
+
+openal_LIBS="$LIBS"
+LIBS="$base_LIBS"
+
AC_SUBST(base_LIBS)
+AC_SUBST(openal_LIBS)
AC_SUBST(opengl_LIBS)
AC_SUBST(thread_LIBS)
AC_SUBST(network_LIBS)
includedir = @includedir@/sound
+EXTRA_DIST = jet.wav
+
lib_LIBRARIES = libsgsound.a
noinst_HEADERS =
-include_HEADERS = sound.hxx soundmgr.hxx
+include_HEADERS = \
+ sample_openal.hxx \
+ soundmgr_openal.hxx \
+ xmlsound.hxx
+
+libsgsound_a_SOURCES = \
+ sample_openal.cxx \
+ soundmgr_openal.cxx \
+ xmlsound.cxx
+
+noinst_PROGRAMS = openal_test1 openal_test2
+
+openal_test1_SOURCES = openal_test1.cxx
+openal_test2_SOURCES = openal_test2.cxx
-libsgsound_a_SOURCES = sound.cxx soundmgr.cxx
+openal_test1_LDADD = -lsgdebug -lopenal
+openal_test2_LDADD = \
+ $(top_builddir)/simgear/sound/libsgsound.a \
+ -lsgdebug -lsgmisc -lsgstructure $(openal_LIBS)
INCLUDES = -I$(top_srcdir)
--- /dev/null
+#include <stdio.h>
+
+#include <AL/al.h>
+#include <AL/alut.h>
+
+#include <simgear/debug/logstream.hxx>
+
+static void print_openal_error( ALuint error ) {
+ if ( error == AL_INVALID_NAME ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_INVALID_NAME" );
+ } else if ( error == AL_ILLEGAL_ENUM ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_ILLEGAL_ENUM" );
+ } else if ( error == AL_INVALID_VALUE ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_INVALID_VALUE" );
+ } else if ( error == AL_ILLEGAL_COMMAND ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_ILLEGAL_COMMAND" );
+ } else if ( error == AL_OUT_OF_MEMORY ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_OUT_OF_MEMORY" );
+ } else {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Unhandled error code = " << error );
+ }
+}
+
+
+int main( int argc, char *argv[] ) {
+ // initialize OpenAL
+ alutInit( 0, NULL );
+ alGetError();
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
+ }
+
+ // Position of the listener.
+ ALfloat listener_pos[3];
+
+ // Velocity of the listener.
+ ALfloat listener_vel[3];
+
+ // Orientation of the listener. (first 3 elements are "at", second
+ // 3 are "up")
+ ALfloat listener_ori[6];
+
+ listener_pos[0] = 0.0;
+ listener_pos[1] = 0.0;
+ listener_pos[2] = 0.0;
+
+ listener_vel[0] = 0.0;
+ listener_vel[1] = 0.0;
+ listener_vel[2] = 0.0;
+
+ 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;
+
+ alListenerfv( AL_POSITION, listener_pos );
+ alListenerfv( AL_VELOCITY, listener_vel );
+ alListenerfv( AL_ORIENTATION, listener_ori );
+
+ // Buffers hold sound data.
+ ALuint buffer;
+
+ // Sources are points emitting sound.
+ ALuint source;
+
+ // Position of the source sound.
+ ALfloat source_pos[3];
+
+ // Velocity of the source sound.
+ ALfloat source_vel[3];
+
+ // configuration values
+ ALenum format;
+ ALsizei size;
+ ALvoid* data;
+ ALsizei freq;
+ ALboolean loop;
+
+ source_pos[0] = 0.0; source_pos[1] = 0.0; source_pos[2] = 0.0;
+ source_vel[0] = 0.0; source_vel[1] = 0.0; source_vel[2] = 0.0;
+
+ // create an OpenAL buffer handle
+ alGenBuffers(1, &buffer);
+ ALuint error = alGetError();
+ if ( error != AL_NO_ERROR ) {
+ print_openal_error( error );
+ SG_LOG( SG_GENERAL, SG_ALERT, "Failed to gen OpenAL buffer." );
+ } else {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Buffer created ok!" );
+ }
+
+ // Load the sample file
+ alutLoadWAVFile( (ALbyte *)"jet.wav", &format, &data, &size, &freq, &loop );
+ if (alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Failed to load wav file.");
+ }
+
+ // Copy data to the internal OpenAL buffer
+ alBufferData( buffer, format, data, size, freq );
+ if (alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Failed to buffer data.");
+ }
+
+ alutUnloadWAV( format, data, size, freq );
+
+ alGenSources(1, &source);
+ if (alGetError() != AL_NO_ERROR) {
+ print_openal_error( error );
+ }
+
+ alSourcei( source, AL_BUFFER, buffer );
+ alSourcef( source, AL_PITCH, 1.0 );
+ alSourcef( source, AL_GAIN, 1.0 );
+ alSourcefv( source, AL_POSITION, source_pos );
+ alSourcefv( source, AL_VELOCITY, source_vel );
+ alSourcei( source, AL_LOOPING, loop );
+
+ alSourcePlay( source );
+
+ sleep(10);
+
+ return 0;
+}
--- /dev/null
+#include <stdio.h>
+
+#include "sample_openal.hxx"
+#include "soundmgr_openal.hxx"
+
+
+int main( int argc, char *argv[] ) {
+ SGSoundMgr sm;
+
+ SGSoundSample sample1( ".", "jet.wav" );
+ sample1.set_volume(0.5);
+ sample1.set_volume(0.2);
+ sample1.play_looped();
+ sleep(1);
+
+ SGSoundSample sample2( ".", "jet.wav" );
+ sample2.set_volume(0.5);
+ sample2.set_pitch(0.4);
+ sample2.play_looped();
+ sleep(1);
+
+ SGSoundSample sample3( ".", "jet.wav" );
+ sample3.set_volume(0.5);
+ sample3.set_pitch(0.8);
+ sample3.play_looped();
+ sleep(1);
+
+ SGSoundSample sample4( ".", "jet.wav" );
+ sample4.set_volume(0.5);
+ sample4.set_pitch(1.2);
+ sample4.play_looped();
+ sleep(1);
+
+ SGSoundSample sample5( ".", "jet.wav" );
+ sample5.set_volume(0.5);
+ sample5.set_pitch(1.6);
+ sample5.play_looped();
+ sleep(1);
+
+ SGSoundSample sample6( ".", "jet.wav" );
+ sample6.set_volume(0.5);
+ sample6.set_pitch(2.0);
+ sample6.play_looped();
+ sleep(1);
+
+ sleep(10);
+}
--- /dev/null
+// sample.cxx -- Sound sample encapsulation class
+//
+// Written by Curtis Olson, started April 2004.
+//
+// Copyright (C) 2004 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 <AL/al.h>
+#include <AL/alut.h>
+
+#include <simgear/debug/logstream.hxx>
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/structure/exception.hxx>
+
+#include "sample_openal.hxx"
+
+
+//
+// SGSoundSample
+//
+
+
+static void print_openal_error( ALuint error ) {
+ if ( error == AL_INVALID_NAME ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_INVALID_NAME" );
+ } else if ( error == AL_ILLEGAL_ENUM ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_ILLEGAL_ENUM" );
+ } else if ( error == AL_INVALID_VALUE ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_INVALID_VALUE" );
+ } else if ( error == AL_ILLEGAL_COMMAND ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_ILLEGAL_COMMAND" );
+ } else if ( error == AL_OUT_OF_MEMORY ) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "AL_OUT_OF_MEMORY" );
+ } else {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Unhandled error code = " << error );
+ }
+}
+
+
+// constructor
+SGSoundSample::SGSoundSample( const char *path, const char *file ) :
+ pitch(1.0),
+ volume(1.0),
+ loop(AL_FALSE)
+{
+ SGPath samplepath( path );
+ if ( strlen(file) ) {
+ samplepath.append( file );
+ }
+
+ SG_LOG( SG_GENERAL, SG_ALERT, "From file sounds sample = "
+ << samplepath.str() );
+
+ ALuint error;
+
+ source_pos[0] = 0.0; source_pos[1] = 0.0; source_pos[2] = 0.0;
+ source_vel[0] = 0.0; source_vel[1] = 0.0; source_vel[2] = 0.0;
+
+ // clear errors from elsewhere?
+ alGetError();
+
+ // create an OpenAL buffer handle
+ alGenBuffers(1, &buffer);
+ error = alGetError();
+ if ( error != AL_NO_ERROR ) {
+ print_openal_error( error );
+ throw sg_exception("Failed to gen OpenAL buffer.");
+ } else {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Buffer created ok!" );
+ }
+
+ // Load the sample file
+ alutLoadWAVFile( (ALbyte *)samplepath.c_str(),
+ &format, &data, &size, &freq, &loop );
+ if (alGetError() != AL_NO_ERROR) {
+ throw sg_exception("Failed to load wav file.");
+ }
+
+ // Copy data to the internal OpenAL buffer
+ alBufferData( buffer, format, data, size, freq );
+ if (alGetError() != AL_NO_ERROR) {
+ throw sg_exception("Failed to buffer data.");
+ }
+
+ alutUnloadWAV( format, data, size, freq );
+
+ // Bind buffer with a source.
+ alGenSources(1, &source);
+ if (alGetError() != AL_NO_ERROR) {
+ throw sg_exception("Failed to gen source.");
+ }
+
+ alSourcei( source, AL_BUFFER, buffer );
+ alSourcef( source, AL_PITCH, pitch );
+ alSourcef( source, AL_GAIN, volume );
+ alSourcefv( source, AL_POSITION, source_pos );
+ alSourcefv( source, AL_VELOCITY, source_vel );
+ alSourcei( source, AL_LOOPING, loop );
+}
+
+
+// constructor
+SGSoundSample::SGSoundSample( unsigned char *_data, int len, int _freq ) :
+ pitch(1.0),
+ volume(1.0),
+ loop(AL_FALSE)
+{
+ SG_LOG( SG_GENERAL, SG_ALERT, "In memory sounds sample" );
+
+ source_pos[0] = 0.0; source_pos[1] = 0.0; source_pos[2] = 0.0;
+ source_vel[0] = 0.0; source_vel[1] = 0.0; source_vel[2] = 0.0;
+
+ // Load wav data into a buffer.
+ alGenBuffers(1, &buffer);
+ if (alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Error in alGenBuffers()" );
+ return;
+ }
+
+ format = AL_FORMAT_MONO8;
+ size = len;
+ data = _data;
+ freq = _freq;
+
+ alBufferData( buffer, format, data, size, freq );
+
+ // Bind buffer with a source.
+ alGenSources(1, &source);
+ if (alGetError() != AL_NO_ERROR) {
+ throw sg_exception("Failed to gen source.");
+ }
+
+ alSourcei( source, AL_BUFFER, buffer );
+ alSourcef( source, AL_PITCH, pitch );
+ alSourcef( source, AL_GAIN, volume );
+ alSourcefv( source, AL_POSITION, source_pos );
+ alSourcefv( source, AL_VELOCITY, source_vel );
+ alSourcei( source, AL_LOOPING, loop );
+}
+
+
+// destructor
+SGSoundSample::~SGSoundSample() {
+ SG_LOG( SG_GENERAL, SG_ALERT, "Deleting a sample" );
+ alDeleteSources(1, &source);
+ alDeleteBuffers(1, &buffer);
+}
+
+
+// play the sample
+void SGSoundSample::play( bool _loop ) {
+ loop = _loop;
+
+ // make sure sound isn't already playing
+ alSourceStop( source );
+
+ alSourcei( source, AL_LOOPING, loop );
+ alSourcePlay( source );
+}
+
+
+// stop playing the sample
+void SGSoundSample::stop() {
+ alSourceStop( source );
+}
--- /dev/null
+// sample.hxx -- Sound sample encapsulation class
+//
+// Written by Curtis Olson, started April 2004.
+//
+// Copyright (C) 2004 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.
+//
+// $Id$
+
+/**
+ * \file sample.hxx
+ * Provides a sound sample encapsulation
+ */
+
+#ifndef _SG_SAMPLE_HXX
+#define _SG_SAMPLE_HXX 1
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+
+#include <AL/al.h>
+
+#include <simgear/debug/logstream.hxx>
+
+
+/**
+ * manages everything we need to know for an individual sound sample
+ */
+
+class SGSoundSample {
+
+private:
+
+ // Buffers hold sound data.
+ ALuint buffer;
+
+ // Sources are points emitting sound.
+ ALuint source;
+
+ // Position of the source sound.
+ ALfloat source_pos[3];
+
+ // Velocity of the source sound.
+ ALfloat source_vel[3];
+
+ // configuration values
+ ALenum format;
+ ALsizei size;
+ ALvoid* data;
+ ALsizei freq;
+
+ double pitch;
+ double volume;
+ ALboolean loop;
+
+public:
+
+ SGSoundSample( const char *path, const char *file );
+ SGSoundSample( unsigned char *_data, int len, int _freq );
+ ~SGSoundSample();
+
+ /**
+ * Start playing this sample.
+ *
+ * @param looped Define wether the sound should be played in a loop.
+ */
+ void play( bool _loop );
+
+ /**
+ * Stop playing this sample.
+ *
+ * @param sched A pointer to the appropriate scheduler.
+ */
+ void stop();
+
+ /**
+ * Play this sample once.
+ * @see #play
+ */
+ inline void play_once() { play(false); }
+
+ /**
+ * Play this sample looped.
+ * @see #play
+ */
+ inline void play_looped() { play(true); }
+
+ /**
+ * Test if a sample is curretnly playing.
+ * @return true if is is playing, false otherwise.
+ */
+ inline bool is_playing( ) {
+ ALint result;
+ alGetSourcei( source, AL_SOURCE_STATE, &result );
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Oops AL error in sample is_playing()!" );
+ }
+ return (result == AL_PLAYING) ;
+ }
+
+ /**
+ * Get the current pitch setting of this sample.
+ */
+ inline double get_pitch() const { return pitch; }
+
+ /**
+ * Set the pitch of this sample.
+ */
+ inline void set_pitch( double p ) {
+ pitch = p;
+ alSourcef( source, AL_PITCH, pitch );
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Oops AL error in sample set_pitch()! " << p );
+ }
+ }
+
+ /**
+ * Get the current volume setting of this sample.
+ */
+ inline double get_volume() const { return volume; }
+
+ /**
+ * Set the volume of this sample.
+ */
+ inline void set_volume( double v ) {
+ volume = v;
+ alSourcef( source, AL_GAIN, volume );
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Oops AL error in sample set_volume()!" );
+ }
+ }
+
+ /**
+ * Returns the size of the sounds sample
+ */
+ inline int get_size() {
+ return size;
+ }
+
+ /**
+ * Return a pointer to the raw data
+ */
+ inline char *get_data() {
+ return (char *)data;
+ }
+};
+
+
+#endif // _SG_SAMPLE_HXX
+
+
+++ /dev/null
-// 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 <simgear/math/fastmath.hxx>
-
-
-#include "sound.hxx"
-
-
-// static double _snd_lin(double v) { return v; }
-static double _snd_inv(double v) { return (v == 0) ? 1e99 : 1/v; }
-static double _snd_abs(double v) { return (v >= 0) ? v : -v; }
-static double _snd_sqrt(double v) { return (v < 0) ? sqrt(-v) : sqrt(v); }
-static double _snd_log10(double v) { return (v < 1) ? 0 : fast_log10(v); }
-static double _snd_log(double v) { return (v < 1) ? 0 : fast_log(v); }
-// static double _snd_sqr(double v) { return v*v; }
-// static double _snd_pow3(double v) { return v*v*v; }
-
-static const struct {
- char *name;
- double (*fn)(double);
-} __sound_fn[] = {
-// {"lin", _snd_lin},
- {"inv", _snd_inv},
- {"abs", _snd_abs},
- {"sqrt", _snd_sqrt},
- {"log", _snd_log10},
- {"ln", _snd_log},
-// {"sqr", _snd_sqr},
-// {"pow3", _snd_pow3},
- {"", NULL}
-};
-
-SGSound::SGSound()
- : _sample(NULL),
- _condition(NULL),
- _property(NULL),
- _active(false),
- _name(""),
- _mode(SGSound::ONCE),
- _prev_value(0),
- _dt_play(0.0),
- _dt_stop(0.0),
- _stopping(0.0)
-{
-}
-
-SGSound::~SGSound()
-{
- _mgr->get_scheduler()->stopSample(_sample->get_sample());
-
- if (_property)
- delete _property;
-
- if (_condition)
- delete _condition;
-
- _volume.clear();
- _pitch.clear();
- delete _sample;
-}
-
-void
-SGSound::init(SGPropertyNode *root, SGPropertyNode *node, SGSoundMgr *sndmgr,
- const string &path)
-{
-
- //
- // 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 = SGSound::LOOPED;
-
- } else if ( !strcmp(mode_str, "in-transit") ) {
- _mode = SGSound::IN_TRANSIT;
-
- } else {
- _mode = SGSound::ONCE;
-
- if ( strcmp(mode_str, "") )
- SG_LOG(SG_GENERAL,SG_INFO, " Unknown sound mode, default to 'once'");
- }
-
- _property = root->getNode(node->getStringValue("property", ""), true);
- SGPropertyNode *condition = node->getChild("condition");
- if (condition != NULL)
- _condition = sgReadCondition(root, 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 < SGSound::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 = root->getNode(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; __sound_fn[j].fn; j++)
- if ( !strcmp(type_str, __sound_fn[j].name) ) {
- volume.fn = __sound_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 < SGSound::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 = root->getNode(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; __sound_fn[j].fn; j++)
- if ( !strcmp(type_str, __sound_fn[j].name) ) {
- pitch.fn = __sound_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 = sndmgr;
- if ((_sample = _mgr->find(_name)) == NULL)
- _sample = _mgr->add(_name, path.c_str(), node->getStringValue("path", ""));
-
- _sample->set_volume(v);
- _sample->set_pitch(p);
-}
-
-void
-SGSound::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 == SGSound::IN_TRANSIT) && (curr_value == _prev_value) )
- )
- )
- )
- {
- if ((_mode != SGSound::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 == SGSound::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 == SGSound::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;
- }
-}
+++ /dev/null
-// 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.
-//
-// $Id$
-
-/**
- * \file sound.hxx
- * Provides a class to manage a single sound event including things
- * like looping, volume and pitch changes.
- */
-
-#ifndef _SG_SOUND_HXX
-#define _SG_SOUND_HXX 1
-
-#ifndef __cplusplus
-# error This library requires C++
-#endif
-
-#include <simgear/compiler.h>
-#include <simgear/props/condition.hxx>
-
-#include "soundmgr.hxx"
-
-static const double MAX_TRANSIT_TIME = 0.1; // 100 ms.
-
-
-/**
- * Class for handling one sound event.
- *
- * This class handles everything for a particular sound event, by
- * scanning an a pre-loaded property tree structure for sound
- * settings, setting up its internal states, and managing sound
- * playback whenever such an event happens.
- */
-class SGSound
-{
-
-public:
-
- SGSound();
- virtual ~SGSound();
-
- /**
- * Initialize the sound event.
- *
- * Prior to initialization of the sound event the propgrams property root
- * has to be defined, the sound configuration XML tree has to be loaded
- * and a sound manager class has to be defined.
- *
- * A sound configuration file would look like this:
- * <fx>
- * <event_name>
- * <name/> Define the name of the event. For refference only.
- * <mode/> Either:
- * looped: play this sound looped.
- * in-transit: play looped while the event is happening.
- * once: play this sound once.
- * <path/> The relative path to the audio file.
- * <property/> Take action if this property becomes true.
- * <condition/> Take action if this condition becomes true.
- * <volume> or <pitch> Define volume or pitch settings.
- * <property/> Take the value of this property as a refference for the
- * result.
- * <internal/> Either:
- * dt_start: the time elapsed since this sound is playing.
- * dt_stop: the time elapsed since this sound has stopped.
- * <offset/> Add this value to the result.
- * <factor/> Multiply the result by this factor.
- * <min/> Make sure the value is never less than this value.
- * <max/> Make sure the value is never larger than this value.
- * </volume> or </pitch>
- * </event_name>
- *
- * <event_name>
- * </event_name>
- * </fx>
- *
- * @param root The root node of the programs property tree.
- * @param child A pointer to the location of the current event as defined
- * in the configuration file.
- * @param sndmgr A pointer to a pre-initialized sound manager class.
- * @param path The path where the audio files remain.
- */
- virtual void init (SGPropertyNode *, SGPropertyNode *, SGSoundMgr *,
- const string &);
-
- /**
- * Check wheter an event has happened and if action has to be taken.
- */
- virtual void update (double dt);
-
- /**
- * Stop taking action on the pre-defined events.
- */
- void stop();
-
-protected:
-
- enum { MAXPROP=5 };
- enum { ONCE=0, LOOPED, IN_TRANSIT };
- enum { LEVEL=0, INVERTED, FLIPFLOP };
-
- // SGSound properties
- typedef struct {
- SGPropertyNode * prop;
- double (*fn)(double);
- double *intern;
- double factor;
- double offset;
- double min;
- double max;
- bool subtract;
- } _snd_prop;
-
-private:
-
- SGSoundMgr * _mgr;
- SGSimpleSound * _sample;
-
- SGCondition * _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 // _SG_SOUND_HXX
+++ /dev/null
-// 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 <iostream>
-
-#include <simgear/debug/logstream.hxx>
-#include <simgear/misc/sg_path.hxx>
-
-#include "soundmgr.hxx"
-
-#define SOUND_SAFETY_MULT 3
-#define MAX_SOUND_SAFETY ( 1.0 / SOUND_SAFETY_MULT )
-
-//
-// SGSimpleSound
-//
-
-// constructor
-SGSimpleSound::SGSimpleSound( const char *path, const char *file )
- : sample(NULL),
- pitch_envelope(NULL),
- volume_envelope(NULL),
- pitch(1.0),
- volume(1.0)
-{
- SGPath slfile( path );
- if ( file )
- slfile.append( file );
-
- sample = new slSample ( 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 );
-}
-
-SGSimpleSound::SGSimpleSound( 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
-SGSimpleSound::~SGSimpleSound() {
- delete pitch_envelope;
- delete volume_envelope;
- delete sample;
-}
-
-void SGSimpleSound::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 SGSimpleSound::stop( slScheduler *sched ) {
-
- sched->stopSample( sample );
-}
-
-//
-// Sound Manager
-//
-
-// constructor
-SGSoundMgr::SGSoundMgr() {
- audio_sched = new slScheduler( 8000 );
- if ( audio_sched->notWorking() ) {
- SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
- } else {
- audio_sched -> setMaxConcurrent ( SL_MAX_MIXERINPUTS );
-
- audio_mixer = new smMixer;
-
- SG_LOG( SG_GENERAL, SG_INFO,
- "Rate = " << audio_sched->getRate()
- << " Bps = " << audio_sched->getBps()
- << " Stereo = " << audio_sched->getStereo() );
- }
-}
-
-// destructor
-
-SGSoundMgr::~SGSoundMgr() {
-
- //
- // 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 ) {
- SGSimpleSound *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 SGSoundMgr::init() {
- safety = MAX_SOUND_SAFETY;
-
- // audio_mixer -> setMasterVolume ( 80 ) ; /* 80% of max volume. */
- audio_sched -> setSafetyMargin ( 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 ) {
- SGSimpleSound *s = sound_current->second;
-
- audio_sched->stopSample(s->get_sample());
- delete s->get_sample();
- delete s;
- }
- sounds.clear();
-
-}
-
-
-void SGSoundMgr::bind ()
-{
- // no properties yet
-}
-
-
-void SGSoundMgr::unbind ()
-{
- // no properties yet
-}
-
-
-// run the audio scheduler
-void SGSoundMgr::update( double dt ) {
- if ( dt > safety ) {
- safety = dt;
- } else {
- safety = safety * 0.99 + dt * 0.01;
- }
- if ( safety > MAX_SOUND_SAFETY ) {
- safety = MAX_SOUND_SAFETY;
- }
- // cout << "safety = " << safety << endl;
- audio_sched -> setSafetyMargin ( SOUND_SAFETY_MULT * safety ) ;
-
- if ( !audio_sched->not_working() )
- audio_sched -> update();
-}
-
-
-void
-SGSoundMgr::pause ()
-{
- audio_sched->pauseSample(0, 0);
-}
-
-
-void
-SGSoundMgr::resume ()
-{
- audio_sched->resumeSample(0, 0);
-}
-
-
-// add a sound effect, return true if successful
-bool SGSoundMgr::add( SGSimpleSound *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
-SGSimpleSound *SGSoundMgr::add( const string &refname,
- const char *path, const char *file ) {
- SGSimpleSound *sound;
-
- SGPath slfile( path );
- if ( file )
- slfile.append( file );
-
- if ( slfile.str().empty() )
- return NULL;
-
- sample_map_iterator it = samples.find(slfile.str());
- if (it == samples.end()) {
-
- sound = new SGSimpleSound(slfile.c_str());
- sounds[refname] = sound;
-
- sample_ref *sr = new sample_ref;
-
- sr->n=1;
- sr->sample = sound->get_sample();
- samples[slfile.str()] = sr;
-
- } else {
- sample_ref *sr = it->second;
-
- sr->n++;
- sound =
- new SGSimpleSound(sr->sample->getBuffer(), sr->sample->getLength());
- sounds[refname] = sound;
-
- }
-
- return sound;
-}
-
-
-// remove a sound effect, return true if successful
-bool SGSoundMgr::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)
- SGSimpleSound *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 SGSoundMgr::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 SGSimpleSound if the specified sound exists
-// in the sound manager system, otherwise return NULL
-SGSimpleSound *SGSoundMgr::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 SGSoundMgr::play_looped( const string &refname ) {
- SGSimpleSound *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 SGSoundMgr::play_once( const string& refname ) {
- SGSimpleSound *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 SGSoundMgr::is_playing( const string& refname ) {
- SGSimpleSound *sample;
-
- if ((sample = find( refname )) == NULL)
- return false;
-
- return (sample->get_sample()->getPlayCount() > 0 );
-}
-
-
-// immediate stop playing the sound
-bool SGSoundMgr::stop( const string& refname ) {
- SGSimpleSound *sample;
-
- if ((sample = find( refname )) == NULL)
- return false;
-
- audio_sched->stopSample( sample->get_sample() );
- return true;
-}
+++ /dev/null
-// 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.
-//
-// $Id$
-
-/**
- * \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_HXX
-#define _SG_SOUNDMGR_HXX 1
-
-#ifndef __cplusplus
-# error This library requires C++
-#endif
-
-#include <simgear/compiler.h>
-#include <simgear/timing/timestamp.hxx>
-
-#include STL_STRING
-#include <map>
-
-#include <plib/sl.h>
-#include <plib/sm.h>
-
-SG_USING_STD(map);
-SG_USING_STD(string);
-
-
-/**
- * manages everything we need to know for an individual sound sample
- */
-class SGSimpleSound {
-
-private:
-
- slSample *sample;
- slEnvelope *pitch_envelope;
- slEnvelope *volume_envelope;
- double pitch;
- double volume;
-
-public:
-
- SGSimpleSound( const char *path, const char *file = NULL );
- SGSimpleSound( unsigned char *buffer, int len );
- ~SGSimpleSound();
-
- /**
- * Start playing this sample.
- *
- * @param sched A pointer to the appropriate scheduler.
- * @param looped Define wether the sound should be played in a loop.
- */
- void play( slScheduler *sched, bool looped );
-
- /**
- * Stop playing this sample.
- *
- * @param sched A pointer to the appropriate scheduler.
- */
- void stop( slScheduler *sched );
-
- /**
- * Play this sample once.
- * @see #play
- */
- inline void play_once( slScheduler *sched ) { play( sched, false); }
-
- /**
- * Play this sample looped.
- * @see #play
- */
- inline void play_looped( slScheduler *sched ) { play( sched, true); }
-
- /**
- * Test if a sample is curretnly playing.
- * @return true if is is playing, false otherwise.
- */
- inline bool is_playing( ) {
- return ( sample->getPlayCount() > 0 );
- }
-
- /**
- * Get the current pitch setting of this sample.
- */
- inline double get_pitch() const { return pitch; }
-
- /**
- * Set the pitch of this sample.
- */
- inline void set_pitch( double p ) {
- pitch = p;
- pitch_envelope->setStep( 0, 0.01, pitch );
- }
-
- /**
- * Get the current volume setting of this sample.
- */
- inline double get_volume() const { return volume; }
-
- /**
- * Set the volume of this sample.
- */
- inline void set_volume( double v ) {
- volume = v;
- volume_envelope->setStep( 0, 0.01, volume );
- }
-
- /**
- * Get a refference to the raw sample.
- */
- inline slSample *get_sample() { return sample; }
-
- /**
- * Get the pitch envelope setting of this sample.
- */
- inline slEnvelope *get_pitch_envelope() { return pitch_envelope; }
-
- /**
- * Get the volume envelope setting of this sample.
- */
- 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, SGSimpleSound * > sound_map;
-typedef sound_map::iterator sound_map_iterator;
-typedef sound_map::const_iterator const_sound_map_iterator;
-
-
-/**
- * Manage a collection of SGSimpleSound instances
- */
-class SGSoundMgr
-{
-
- slScheduler *audio_sched;
- smMixer *audio_mixer;
-
- sound_map sounds;
- sample_map samples;
-
- double safety;
-
-public:
-
- SGSoundMgr();
- ~SGSoundMgr();
-
-
- /**
- * (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( SGSimpleSound *sound, const string& refname);
-
- /**
- * Add a sound file to the sound manager.
- *
- * The advantage of using this function over the previous one is that
- * it doesn't load a sample if it already is in memory, but instead it
- * uses the already loaded sample data.
- *
- * @param refname A refference name to make a distincion between samples.
- * @param path The path or full filename of the sample to load.
- * @param file An optional filename which will be appended to the path.
- * @return An instance of the sound for further manipulation.
- */
- SGSimpleSound *add( const string& refname,
- const char *path, const char *file = NULL );
-
- /**
- * 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 SGSimpleSound if the specified sound
- * exists in the sound manager system, otherwise return NULL
- */
- SGSimpleSound *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 // _SG_SOUNDMGR_HXX
-
-
--- /dev/null
+// 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 <iostream>
+
+#include <AL/al.h>
+#include <AL/alut.h>
+#include <AL/alc.h>
+
+#include <simgear/debug/logstream.hxx>
+#include <simgear/misc/sg_path.hxx>
+
+#include "soundmgr_openal.hxx"
+
+
+//
+// Sound Manager
+//
+
+// constructor
+SGSoundMgr::SGSoundMgr() {
+
+ SG_LOG( SG_GENERAL, SG_ALERT, "Initializing OpenAL sound manager" );
+
+ // initialize OpenAL
+ alutInit( 0, NULL );
+ alGetError();
+ if ( alGetError() == AL_NO_ERROR) {
+ working = true;
+ } else {
+ working = false;
+ SG_LOG( SG_GENERAL, SG_ALERT, "Audio initialization failed!" );
+ }
+
+ listener_pos[0] = 0.0;
+ listener_pos[1] = 0.0;
+ listener_pos[2] = 0.0;
+
+ listener_vel[0] = 0.0;
+ listener_vel[1] = 0.0;
+ listener_vel[2] = 0.0;
+
+ 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;
+
+ alListenerfv( AL_POSITION, listener_pos );
+ alListenerfv( AL_VELOCITY, listener_vel );
+ alListenerfv( AL_ORIENTATION, listener_ori );
+ alGetError();
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Oops AL error after audio initialization!" );
+ }
+}
+
+// destructor
+
+SGSoundMgr::~SGSoundMgr() {
+
+ //
+ // 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 ) {
+ SGSoundSample *sample = sample_current->second;
+ delete sample;
+ }
+
+ alutExit();
+}
+
+
+// initialize the sound manager
+void SGSoundMgr::init() {
+ //
+ // 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 ) {
+ SGSoundSample *sample = sample_current->second;
+ delete sample;
+ }
+ samples.clear();
+}
+
+
+void SGSoundMgr::bind ()
+{
+ // no properties
+}
+
+
+void SGSoundMgr::unbind ()
+{
+ // no properties
+}
+
+
+// run the audio scheduler
+void SGSoundMgr::update( double dt ) {
+}
+
+
+void
+SGSoundMgr::pause ()
+{
+ ALCcontext *pCurContext = alcGetCurrentContext();
+ alcSuspendContext( pCurContext );
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Oops AL error after soundmgr pause()!" );
+ }
+}
+
+
+void
+SGSoundMgr::resume ()
+{
+ ALCcontext *pCurContext = alcGetCurrentContext();
+ alcProcessContext( pCurContext );
+ if ( alGetError() != AL_NO_ERROR) {
+ SG_LOG( SG_GENERAL, SG_ALERT,
+ "Oops AL error after soundmgr resume()!" );
+ }
+}
+
+
+// add a sound effect, return true if successful
+bool SGSoundMgr::add( SGSoundSample *sound, const string& refname ) {
+
+ sample_map_iterator sample_it = samples.find( refname );
+ if ( sample_it != samples.end() ) {
+ // sound already exists
+ return false;
+ }
+
+ samples[refname] = sound;
+
+ return true;
+}
+
+
+// remove a sound effect, return true if successful
+bool SGSoundMgr::remove( const string &refname ) {
+
+ sample_map_iterator sample_it = samples.find( refname );
+ if ( sample_it != samples.end() ) {
+ // first stop the sound from playing (so we don't bomb the
+ // audio scheduler)
+ SGSoundSample *sample = sample_it->second;
+ delete sample;
+ samples.erase( sample_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 SGSoundMgr::exists( const string &refname ) {
+ sample_map_iterator sample_it = samples.find( refname );
+ if ( sample_it != samples.end() ) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+
+// return a pointer to the SGSoundSample if the specified sound exists
+// in the sound manager system, otherwise return NULL
+SGSoundSample *SGSoundMgr::find( const string &refname ) {
+ sample_map_iterator sample_it = samples.find( refname );
+ if ( sample_it != samples.end() ) {
+ return sample_it->second;
+ } else {
+ return NULL;
+ }
+}
+
+
+// tell the scheduler to play the indexed sample in a continuous
+// loop
+bool SGSoundMgr::play_looped( const string &refname ) {
+ SGSoundSample *sample;
+
+ if ( (sample = find( refname )) == NULL ) {
+ return false;
+ } else {
+ sample->play( true );
+ return true;
+ }
+}
+
+
+// tell the scheduler to play the indexed sample once
+bool SGSoundMgr::play_once( const string& refname ) {
+ SGSoundSample *sample;
+
+ if ( (sample = find( refname )) == NULL ) {
+ return false;
+ } else {
+ sample->play( false );
+ return true;
+ }
+}
+
+
+// return true of the specified sound is currently being played
+bool SGSoundMgr::is_playing( const string& refname ) {
+ SGSoundSample *sample;
+
+ if ( (sample = find( refname )) == NULL ) {
+ return false;
+ } else {
+ return ( sample->is_playing() );
+ }
+}
+
+
+// immediate stop playing the sound
+bool SGSoundMgr::stop( const string& refname ) {
+ SGSoundSample *sample;
+
+ if ( (sample = find( refname )) == NULL ) {
+ return false;
+ } else {
+ sample->stop();
+ return true;
+ }
+}
--- /dev/null
+// 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.
+//
+// $Id$
+
+/**
+ * \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_OPENAL_HXX
+#define _SG_SOUNDMGR_OPENAL_HXX 1
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+
+#include STL_STRING
+#include <map>
+
+#include <AL/al.h>
+
+#include "sample_openal.hxx"
+
+SG_USING_STD(map);
+SG_USING_STD(string);
+
+
+typedef map < string, SGSoundSample * > sample_map;
+typedef sample_map::iterator sample_map_iterator;
+typedef sample_map::const_iterator const_sample_map_iterator;
+
+
+/**
+ * Manage a collection of SGSoundSample instances
+ */
+class SGSoundMgr
+{
+
+ // Position of the listener.
+ ALfloat listener_pos[3];
+
+ // Velocity of the listener.
+ ALfloat listener_vel[3];
+
+ // Orientation of the listener. (first 3 elements are "at", second
+ // 3 are "up")
+ ALfloat listener_ori[6];
+
+ sample_map samples;
+
+ bool working;
+ double safety;
+
+public:
+
+ SGSoundMgr();
+ ~SGSoundMgr();
+
+
+ /**
+ * (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 working; }
+
+ /**
+ * reinitialize the sound manager
+ */
+ inline void reinit() { init(); }
+
+ /**
+ * add a sound effect, return true if successful
+ */
+ bool add( SGSoundSample *sound, const string& refname);
+
+ /**
+ * 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 SGSoundSample if the specified sound
+ * exists in the sound manager system, otherwise return NULL
+ */
+ SGSoundSample *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 );
+};
+
+
+#endif // _SG_SOUNDMGR_OPENAL_HXX
+
+
--- /dev/null
+// 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 <simgear/math/fastmath.hxx>
+
+
+#include "xmlsound.hxx"
+
+
+// static double _snd_lin(double v) { return v; }
+static double _snd_inv(double v) { return (v == 0) ? 1e99 : 1/v; }
+static double _snd_abs(double v) { return (v >= 0) ? v : -v; }
+static double _snd_sqrt(double v) { return (v < 0) ? sqrt(-v) : sqrt(v); }
+static double _snd_log10(double v) { return (v < 1) ? 0 : fast_log10(v); }
+static double _snd_log(double v) { return (v < 1) ? 0 : fast_log(v); }
+// static double _snd_sqr(double v) { return v*v; }
+// static double _snd_pow3(double v) { return v*v*v; }
+
+static const struct {
+ char *name;
+ double (*fn)(double);
+} __sound_fn[] = {
+// {"lin", _snd_lin},
+ {"inv", _snd_inv},
+ {"abs", _snd_abs},
+ {"sqrt", _snd_sqrt},
+ {"log", _snd_log10},
+ {"ln", _snd_log},
+// {"sqr", _snd_sqr},
+// {"pow3", _snd_pow3},
+ {"", NULL}
+};
+
+SGXmlSound::SGXmlSound()
+ : _sample(NULL),
+ _condition(NULL),
+ _property(NULL),
+ _active(false),
+ _name(""),
+ _mode(SGXmlSound::ONCE),
+ _prev_value(0),
+ _dt_play(0.0),
+ _dt_stop(0.0),
+ _stopping(0.0)
+{
+}
+
+SGXmlSound::~SGXmlSound()
+{
+ _sample->stop();
+
+ if (_property)
+ delete _property;
+
+ if (_condition)
+ delete _condition;
+
+ _volume.clear();
+ _pitch.clear();
+ delete _sample;
+}
+
+void
+SGXmlSound::init(SGPropertyNode *root, SGPropertyNode *node, SGSoundMgr *sndmgr,
+ const string &path)
+{
+
+ //
+ // 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 = SGXmlSound::LOOPED;
+
+ } else if ( !strcmp(mode_str, "in-transit") ) {
+ _mode = SGXmlSound::IN_TRANSIT;
+
+ } else {
+ _mode = SGXmlSound::ONCE;
+
+ if ( strcmp(mode_str, "") )
+ SG_LOG(SG_GENERAL,SG_INFO, " Unknown sound mode, default to 'once'");
+ }
+
+ _property = root->getNode(node->getStringValue("property", ""), true);
+ SGPropertyNode *condition = node->getChild("condition");
+ if (condition != NULL)
+ _condition = sgReadCondition(root, 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 < SGXmlSound::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 = root->getNode(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; __sound_fn[j].fn; j++)
+ if ( !strcmp(type_str, __sound_fn[j].name) ) {
+ volume.fn = __sound_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 < SGXmlSound::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 = root->getNode(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; __sound_fn[j].fn; j++)
+ if ( !strcmp(type_str, __sound_fn[j].name) ) {
+ pitch.fn = __sound_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 = sndmgr;
+ if ( (_sample = _mgr->find(_name)) == NULL ) {
+ _sample = new SGSoundSample( path.c_str(),
+ node->getStringValue("path", "") );
+ _mgr->add( _sample, _name );
+ }
+
+ _sample->set_volume(v);
+ _sample->set_pitch(p);
+}
+
+void
+SGXmlSound::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 == SGXmlSound::IN_TRANSIT) && (curr_value == _prev_value) )
+ )
+ )
+ )
+ {
+ if ((_mode != SGXmlSound::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();
+ }
+
+ _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 == SGXmlSound::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 == SGXmlSound::ONCE)
+ _sample->play(false);
+
+ else
+ _sample->play(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;
+ }
+}
--- /dev/null
+// 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.
+//
+// $Id$
+
+/**
+ * \file sound.hxx
+ * Provides a class to manage a single sound event including things
+ * like looping, volume and pitch changes.
+ */
+
+#ifndef _SG_SOUND_HXX
+#define _SG_SOUND_HXX 1
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+#include <simgear/props/condition.hxx>
+
+#include "sample_openal.hxx"
+#include "soundmgr_openal.hxx"
+
+static const double MAX_TRANSIT_TIME = 0.1; // 100 ms.
+
+
+/**
+ * Class for handling one sound event.
+ *
+ * This class handles everything for a particular sound event, by
+ * scanning an a pre-loaded property tree structure for sound
+ * settings, setting up its internal states, and managing sound
+ * playback whenever such an event happens.
+ */
+class SGXmlSound
+{
+
+public:
+
+ SGXmlSound();
+ virtual ~SGXmlSound();
+
+ /**
+ * Initialize the sound event.
+ *
+ * Prior to initialization of the sound event the propgrams property root
+ * has to be defined, the sound configuration XML tree has to be loaded
+ * and a sound manager class has to be defined.
+ *
+ * A sound configuration file would look like this:
+ * <fx>
+ * <event_name>
+ * <name/> Define the name of the event. For refference only.
+ * <mode/> Either:
+ * looped: play this sound looped.
+ * in-transit: play looped while the event is happening.
+ * once: play this sound once.
+ * <path/> The relative path to the audio file.
+ * <property/> Take action if this property becomes true.
+ * <condition/> Take action if this condition becomes true.
+ * <volume> or <pitch> Define volume or pitch settings.
+ * <property/> Take the value of this property as a refference for the
+ * result.
+ * <internal/> Either:
+ * dt_start: the time elapsed since this sound is playing.
+ * dt_stop: the time elapsed since this sound has stopped.
+ * <offset/> Add this value to the result.
+ * <factor/> Multiply the result by this factor.
+ * <min/> Make sure the value is never less than this value.
+ * <max/> Make sure the value is never larger than this value.
+ * </volume> or </pitch>
+ * </event_name>
+ *
+ * <event_name>
+ * </event_name>
+ * </fx>
+ *
+ * @param root The root node of the programs property tree.
+ * @param child A pointer to the location of the current event as defined
+ * in the configuration file.
+ * @param sndmgr A pointer to a pre-initialized sound manager class.
+ * @param path The path where the audio files remain.
+ */
+ virtual void init (SGPropertyNode *, SGPropertyNode *, SGSoundMgr *,
+ const string &);
+
+ /**
+ * Check wheter an event has happened and if action has to be taken.
+ */
+ virtual void update (double dt);
+
+ /**
+ * Stop taking action on the pre-defined events.
+ */
+ void stop();
+
+protected:
+
+ enum { MAXPROP=5 };
+ enum { ONCE=0, LOOPED, IN_TRANSIT };
+ enum { LEVEL=0, INVERTED, FLIPFLOP };
+
+ // SGXmlSound properties
+ typedef struct {
+ SGPropertyNode * prop;
+ double (*fn)(double);
+ double *intern;
+ double factor;
+ double offset;
+ double min;
+ double max;
+ bool subtract;
+ } _snd_prop;
+
+private:
+
+ SGSoundMgr * _mgr;
+ SGSoundSample * _sample;
+
+ SGCondition * _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 // _SG_SOUND_HXX
projects / simgear.git / commitdiff