1 // sample_openal.cxx -- Audio sample encapsulation class
3 // Written by Curtis Olson, started April 2004.
4 // Modified to match the new SoundSystem by Erik Hofman, October 2009
6 // Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
7 // Copyright (C) 2009 Erik Hofman <erik@ehofman.com>
9 // This program is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU General Public License as
11 // published by the Free Software Foundation; either version 2 of the
12 // License, or (at your option) any later version.
14 // This program is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software Foundation,
21 // Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26 # include <simgear_config.h>
29 #include <stdlib.h> // rand()
31 #include <simgear/debug/logstream.hxx>
32 #include <simgear/structure/exception.hxx>
33 #include <simgear/misc/sg_path.hxx>
34 #include <simgear/math/SGQuat.hxx>
36 #include "soundmgr_openal.hxx"
37 #include "sample_openal.hxx"
45 SGSoundSample::SGSoundSample() :
46 _absolute_pos(SGVec3d::zeros()),
47 _relative_pos(SGVec3d::zeros()),
48 _direction(SGVec3d::zeros()),
49 _velocity(SGVec3d::zeros()),
50 _orientation(SGQuatd::zeros()),
51 _orivec(SGVec3f::zeros()),
53 _refname(random_string()),
55 _format(AL_FORMAT_MONO8),
59 _buffer(SGSoundMgr::NO_BUFFER),
61 _source(SGSoundMgr::NO_SOURCE),
68 _reference_dist(500.0),
73 _static_changed(true),
79 SGSoundSample::SGSoundSample( const char *path, const char *file ) :
80 _absolute_pos(SGVec3d::zeros()),
81 _relative_pos(SGVec3d::zeros()),
82 _direction(SGVec3d::zeros()),
83 _velocity(SGVec3d::zeros()),
84 _orientation(SGQuatd::zeros()),
85 _orivec(SGVec3f::zeros()),
87 _format(AL_FORMAT_MONO8),
91 _buffer(SGSoundMgr::NO_BUFFER),
93 _source(SGSoundMgr::NO_SOURCE),
100 _reference_dist(500.0),
105 _static_changed(true),
108 SGPath samplepath( path );
109 if ( strlen(file) ) {
110 samplepath.append( file );
112 _refname = samplepath.str();
114 SG_LOG( SG_GENERAL, SG_DEBUG, "From file sounds sample = "
115 << samplepath.str() );
119 SGSoundSample::SGSoundSample( std::auto_ptr<unsigned char>& data,
120 int len, int freq, int format ) :
121 _absolute_pos(SGVec3d::zeros()),
122 _relative_pos(SGVec3d::zeros()),
123 _direction(SGVec3d::zeros()),
124 _velocity(SGVec3d::zeros()),
125 _orientation(SGQuatd::zeros()),
126 _orivec(SGVec3f::zeros()),
128 _refname(random_string()),
129 _data(data.release()),
133 _valid_buffer(false),
134 _buffer(SGSoundMgr::NO_BUFFER),
135 _valid_source(false),
136 _source(SGSoundMgr::NO_SOURCE),
143 _reference_dist(500.0),
148 _static_changed(true),
151 SG_LOG( SG_GENERAL, SG_DEBUG, "In memory sounds sample" );
156 SGSoundSample::~SGSoundSample() {
159 void SGSoundSample::set_orientation( const SGQuatd& ori ) {
161 update_absolute_position();
165 void SGSoundSample::set_direction( const SGVec3d& dir ) {
167 update_absolute_position();
171 void SGSoundSample::set_relative_position( const SGVec3f& pos ) {
172 _relative_pos = toVec3d(pos);
173 update_absolute_position();
177 void SGSoundSample::set_position( const SGGeod& pos ) {
179 update_absolute_position();
183 void SGSoundSample::update_absolute_position() {
184 SGQuatd orient = SGQuatd::fromLonLat(_base_pos) * _orientation;
185 _orivec = -toVec3f(orient.rotate(-SGVec3d::e1()));
186 printf("ori: %f %f %f\n", _orivec[0], _orivec[1], _orivec[2]);
187 printf("vel: %f %f %f\n", _velocity[0], _velocity[1], _velocity[2]);
189 orient = SGQuatd::fromRealImag(0, _relative_pos) * _orientation;
190 _absolute_pos = -SGVec3d::fromGeod(_base_pos); // -orient.rotate(SGVec3d::e1());
191 //printf("pos: %f %f %f\n", _absolute_pos[0], _absolute_pos[1], _absolute_pos[2]);
194 string SGSoundSample::random_string() {
195 static const char *r = "0123456789abcdefghijklmnopqrstuvwxyz"
196 "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
198 for (int i=0; i<10; i++) {
199 rstr.push_back( r[rand() % strlen(r)] );