proper orientation(?) and comment out relative position and direction code since...

[simgear.git] / simgear / sound / sample_openal.cxx

diff --git a/simgear/sound/sample_openal.cxx b/simgear/sound/sample_openal.cxx
index 5fc257cc7ca83982ed518f98a66a9369b4f19dfb..4be9d8113f02c9c068afd605e3c7926d58bded95 100644 (file)
--- a/simgear/sound/sample_openal.cxx
+++ b/simgear/sound/sample_openal.cxx
@@ -26,6 +26,8 @@
 #  include <simgear_config.h>
 #endif
 
+#include <stdlib.h>    // rand()
+
 #include <simgear/debug/logstream.hxx>
 #include <simgear/structure/exception.hxx>
 #include <simgear/misc/sg_path.hxx>
@@ -44,11 +46,11 @@ SGSoundSample::SGSoundSample() :
     _absolute_pos(SGVec3d::zeros()),
     _relative_pos(SGVec3d::zeros()),
     _direction(SGVec3d::zeros()),
-    _velocity(SGVec3d::zeros()),
+    _velocity(SGVec3f::zeros()),
     _orientation(SGQuatd::zeros()),
     _orivec(SGVec3f::zeros()),
-    _base_pos(SGGeod()),
-    _refname(""),
+    _base_pos(SGGeod::fromDeg(0,0)),
+    _refname(random_string()),
     _data(NULL),
     _format(AL_FORMAT_MONO8),
     _size(0),
@@ -78,10 +80,12 @@ SGSoundSample::SGSoundSample( const char *path, const char *file ) :
     _absolute_pos(SGVec3d::zeros()),
     _relative_pos(SGVec3d::zeros()),
     _direction(SGVec3d::zeros()),
-    _velocity(SGVec3d::zeros()),
+    _velocity(SGVec3f::zeros()),
     _orientation(SGQuatd::zeros()),
     _orivec(SGVec3f::zeros()),
-    _base_pos(SGGeod()),
+    _base_pos(SGGeod::fromDeg(0,0)),
+    _refname(file),
+    _data(NULL),
     _format(AL_FORMAT_MONO8),
     _size(0),
     _freq(0),
@@ -108,21 +112,54 @@ SGSoundSample::SGSoundSample( const char *path, const char *file ) :
         samplepath.append( file );
     }
     _refname = samplepath.str();
+}
 
-     SG_LOG( SG_GENERAL, SG_DEBUG, "From file sounds sample = "
-            << samplepath.str() );
+// constructor
+SGSoundSample::SGSoundSample( const unsigned char** data,
+                              int len, int freq, int format ) :
+    _absolute_pos(SGVec3d::zeros()),
+    _relative_pos(SGVec3d::zeros()),
+    _direction(SGVec3d::zeros()),
+    _velocity(SGVec3f::zeros()),
+    _orientation(SGQuatd::zeros()),
+    _orivec(SGVec3f::zeros()),
+    _base_pos(SGGeod::fromDeg(0,0)),
+    _refname(random_string()),
+    _format(format),
+    _size(len),
+    _freq(freq),
+    _valid_buffer(false),
+    _buffer(SGSoundMgr::NO_BUFFER),
+    _valid_source(false),
+    _source(SGSoundMgr::NO_SOURCE),
+    _inner_angle(360.0),
+    _outer_angle(360.0),
+    _outer_gain(0.0),
+    _pitch(1.0),
+    _volume(1.0),
+    _master_volume(1.0),
+    _reference_dist(500.0),
+    _max_dist(3000.0),
+    _loop(AL_FALSE),
+    _playing(false),
+    _changed(true),
+    _static_changed(true),
+    _is_file(false)
+{
+    SG_LOG( SG_GENERAL, SG_DEBUG, "In memory sounds sample" );
+    _data = (unsigned char*)*data; *data = NULL;
 }
 
 // constructor
-SGSoundSample::SGSoundSample( unsigned char *data, int len, int freq, int format ) :
+SGSoundSample::SGSoundSample( void** data, int len, int freq, int format ) :
     _absolute_pos(SGVec3d::zeros()),
     _relative_pos(SGVec3d::zeros()),
     _direction(SGVec3d::zeros()),
-    _velocity(SGVec3d::zeros()),
+    _velocity(SGVec3f::zeros()),
     _orientation(SGQuatd::zeros()),
     _orivec(SGVec3f::zeros()),
-    _base_pos(SGGeod()),
-    _data(data),
+    _base_pos(SGGeod::fromDeg(0,0)),
+    _refname(random_string()),
     _format(format),
     _size(len),
     _freq(freq),
@@ -144,50 +181,51 @@ SGSoundSample::SGSoundSample( unsigned char *data, int len, int freq, int format
     _static_changed(true),
     _is_file(false)
 {
-    _refname = "unknown, data supplied by caller";
     SG_LOG( SG_GENERAL, SG_DEBUG, "In memory sounds sample" );
+    _data = (unsigned char*)*data; *data = NULL;
 }
 
 
 // destructor
 SGSoundSample::~SGSoundSample() {
-    if (_data != NULL) {
-        delete _data;
-        _data = NULL;
-    }
+    if (_data) free(_data);
 }
 
-void SGSoundSample::set_orientation( const SGQuatd& ori ) {
-    _orientation = ori;
-    update_absolute_position();
-    _changed = true;
-}
+void SGSoundSample::update_pos_and_orientation() {
+    // The rotation rotating from the earth centerd frame to
+    // the horizontal local frame
+    SGQuatd hlOr = SGQuatd::fromLonLat(_base_pos);
 
-void SGSoundSample::set_direction( const SGVec3d& dir ) {
-    _direction = dir;
-    update_absolute_position();
-    _changed = true;
-}
+    // Compute the sounds orientation and position
+    // wrt the earth centered frame - that is global coorinates
+    SGQuatd sc2body = hlOr*_orientation;
 
-void SGSoundSample::set_relative_position( const SGVec3f& pos ) {
-    _relative_pos = toVec3d(pos);
-    update_absolute_position();
-    _changed = true;
-}
+    // This is rotates the x-forward, y-right, z-down coordinate system where
+    // simulation runs into the OpenGL camera system with x-right, y-up, z-back.
+    SGQuatd q(-0.5, -0.5, 0.5, 0.5);
 
-void SGSoundSample::set_position( const SGGeod& pos ) {
-    _base_pos = pos;
-    update_absolute_position();
-    _changed = true;
-}
+    // The cartesian position of the sounds base location
+    SGVec3d position = SGVec3d::fromGeod(_base_pos);
 
-void SGSoundSample::update_absolute_position() {
-    SGQuatd orient = SGQuatd::fromLonLat(_base_pos) * _orientation;
-    _orivec = -toVec3f(orient.rotate(_direction));
+    _absolute_pos = position;
+#if 0
+    if ( _relative_pos[0] || _relative_pos[1] || _relative_pos[2] ) {
+        _absolute_pos += (sc2body*q).backTransform(_relative_pos);
+    }
+#endif
+    if ( _direction[0] || _direction[1] || _direction[2] ) {
+        _orivec = toVec3f( (sc2body*q).backTransform(_direction) );
+    }
+}
 
-     orient = SGQuatd::fromRealImag(0, _relative_pos) * _orientation;
-    _absolute_pos = -SGVec3d::fromGeod(_base_pos) -orient.rotate(SGVec3d::e1());
+string SGSoundSample::random_string() {
+      static const char *r = "0123456789abcdefghijklmnopqrstuvwxyz"
+                             "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+      string rstr = "System generated name: ";
+      for (int i=0; i<10; i++) {
+          rstr.push_back( r[rand() % strlen(r)] );
+      }
 
-    float vel = length(_velocity);
-    _velocity = toVec3d(_orivec * vel);
+      return rstr;
 }
+