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Expose some of the positional components of the OpenAL API.

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This commit is contained in:
curt
2004-04-27 20:45:58 +00:00
parent d3a3466b14
commit 5c3b4abf42
4 changed files with 101 additions and 0 deletions
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4
simgear/sound/sample_openal.cxx
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@@ -129,6 +129,10 @@ SGSoundSample::SGSoundSample( const char *path, const char *file,
alSourcefv( source, AL_POSITION, source_pos );
alSourcefv( source, AL_VELOCITY, source_vel );
alSourcei( source, AL_LOOPING, loop );
alSourcei( source, AL_SOURCE_RELATIVE, AL_TRUE );
alSourcef( source, AL_REFERENCE_DISTANCE, 250.0f );
alSourcef( source, AL_MAX_DISTANCE, 2000.0f );
}

21
simgear/sound/sample_openal.hxx
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@@ -189,6 +189,27 @@ public:
inline char *get_data() {
return (char *)data;
}
/**
* Set position of sound source (uses same coordinate system as opengl)
*/
inline void set_source_pos( ALfloat *pos ) {
source_pos[0] = pos[0];
source_pos[1] = pos[1];
source_pos[2] = pos[2];
alSourcefv( source, AL_POSITION, source_pos );
}
/**
* Set velocity of sound source (uses same coordinate system as opengl)
*/
inline void set_source_vel( ALfloat *vel ) {
source_vel[0] = vel[0];
source_vel[1] = vel[1];
source_vel[2] = vel[2];
alSourcefv( source, AL_VELOCITY, source_vel );
}
};

25
simgear/sound/soundmgr_openal.cxx
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@@ -83,6 +83,9 @@ SGSoundMgr::SGSoundMgr() {
SG_LOG( SG_GENERAL, SG_ALERT,
"Oops AL error after audio initialization!" );
}
// exaggerate the ear candy?
alDopplerFactor(1.0);
}
// destructor
@@ -267,3 +270,25 @@ bool SGSoundMgr::stop( const string& refname ) {
return true;
}
}
// set source position of all managed sounds
void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
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;
sample->set_source_pos( pos );
}
}
// set source velocity of all managed sounds
void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
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;
sample->set_source_vel( vel );
}
}

51
simgear/sound/soundmgr_openal.hxx
View File

@@ -173,6 +173,57 @@ public:
* immediate stop playing the sound
*/
bool stop( const string& refname );
/**
* set the position of the listener (in opengl coordinates)
*/
inline void set_listener_pos( ALfloat *pos ) {
listener_pos[0] = pos[0];
listener_pos[1] = pos[1];
listener_pos[2] = pos[2];
alListenerfv( AL_POSITION, listener_pos );
}
/**
* set the velocity of the listener (in opengl coordinates)
*/
inline void set_listener_vel( ALfloat *vel ) {
listener_vel[0] = vel[0];
listener_vel[1] = vel[1];
listener_vel[2] = vel[2];
alListenerfv( AL_VELOCITY, listener_vel );
}
/**
* set the orientation of the listener (in opengl coordinates)
*
* Description: ORIENTATION is a pair of 3-tuples representing the
* 'at' direction vector and 'up' direction of the Object in
* Cartesian space. AL expects two vectors that are orthogonal to
* each other. These vectors are not expected to be normalized. If
* one or more vectors have zero length, implementation behavior
* is undefined. If the two vectors are linearly dependent,
* behavior is undefined.
*/
inline void set_listener_orientation( ALfloat *ori ) {
listener_ori[0] = ori[0];
listener_ori[1] = ori[1];
listener_ori[2] = ori[2];
listener_ori[3] = ori[3];
listener_ori[4] = ori[4];
listener_ori[5] = ori[5];
alListenerfv( AL_ORIENTATION, listener_ori );
}
/**
* set the positions of all managaged sound sources
*/
void set_source_pos_all( ALfloat *pos );
/**
* set the velocities of all managaged sound sources
*/
void set_source_vel_all( ALfloat *pos );
};