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(SGVec3f::zeros()),
50 _orientation(SGQuatd::zeros()),
51 _rotation(SGQuatd::zeros()),
52 _orivec(SGVec3f::zeros()),
53 _base_pos(SGVec3d::zeros()),
54 _base_offs(SGVec3d::zeros()),
55 _refname(random_string()),
57 _format(AL_FORMAT_MONO8),
61 _buffer(SGSoundMgr::NO_BUFFER),
63 _source(SGSoundMgr::NO_SOURCE),
70 _reference_dist(500.0),
75 _static_changed(true),
81 SGSoundSample::SGSoundSample( const char *path, const char *file ) :
82 _absolute_pos(SGVec3d::zeros()),
83 _relative_pos(SGVec3d::zeros()),
84 _direction(SGVec3d::zeros()),
85 _velocity(SGVec3f::zeros()),
86 _orientation(SGQuatd::zeros()),
87 _rotation(SGQuatd::zeros()),
88 _orivec(SGVec3f::zeros()),
89 _base_pos(SGVec3d::zeros()),
90 _base_offs(SGVec3d::zeros()),
93 _format(AL_FORMAT_MONO8),
97 _buffer(SGSoundMgr::NO_BUFFER),
99 _source(SGSoundMgr::NO_SOURCE),
106 _reference_dist(500.0),
111 _static_changed(true),
114 SGPath samplepath( path );
115 if ( strlen(file) ) {
116 samplepath.append( file );
118 _refname = samplepath.str();
122 SGSoundSample::SGSoundSample( const unsigned char** data,
123 int len, int freq, int format ) :
124 _absolute_pos(SGVec3d::zeros()),
125 _relative_pos(SGVec3d::zeros()),
126 _direction(SGVec3d::zeros()),
127 _velocity(SGVec3f::zeros()),
128 _orientation(SGQuatd::zeros()),
129 _rotation(SGQuatd::zeros()),
130 _orivec(SGVec3f::zeros()),
131 _base_pos(SGVec3d::zeros()),
132 _base_offs(SGVec3d::zeros()),
133 _refname(random_string()),
137 _valid_buffer(false),
138 _buffer(SGSoundMgr::NO_BUFFER),
139 _valid_source(false),
140 _source(SGSoundMgr::NO_SOURCE),
147 _reference_dist(500.0),
152 _static_changed(true),
155 SG_LOG( SG_GENERAL, SG_DEBUG, "In memory sounds sample" );
156 _data = (unsigned char*)*data; *data = NULL;
160 SGSoundSample::SGSoundSample( void** data, int len, int freq, int format ) :
161 _absolute_pos(SGVec3d::zeros()),
162 _relative_pos(SGVec3d::zeros()),
163 _direction(SGVec3d::zeros()),
164 _velocity(SGVec3f::zeros()),
165 _orientation(SGQuatd::zeros()),
166 _rotation(SGQuatd::zeros()),
167 _orivec(SGVec3f::zeros()),
168 _base_pos(SGVec3d::zeros()),
169 _base_offs(SGVec3d::zeros()),
170 _refname(random_string()),
174 _valid_buffer(false),
175 _buffer(SGSoundMgr::NO_BUFFER),
176 _valid_source(false),
177 _source(SGSoundMgr::NO_SOURCE),
184 _reference_dist(500.0),
189 _static_changed(true),
192 SG_LOG( SG_GENERAL, SG_DEBUG, "In memory sounds sample" );
193 _data = (unsigned char*)*data; *data = NULL;
198 SGSoundSample::~SGSoundSample() {
199 if (_data) free(_data);
202 void SGSoundSample::update_pos_and_orientation() {
204 _absolute_pos = _base_pos - _base_offs;
205 if ( _relative_pos[0] || _relative_pos[1] || _relative_pos[2] ) {
206 _absolute_pos += _rotation.backTransform(_relative_pos);
209 if ( _direction[0] || _direction[1] || _direction[2] ) {
210 _orivec = toVec3f( _rotation.rotate(_direction) );
213 _orivec = SGVec3f::zeros();
216 string SGSoundSample::random_string() {
217 static const char *r = "0123456789abcdefghijklmnopqrstuvwxyz"
218 "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
219 string rstr = "System generated name: ";
220 for (int i=0; i<10; i++) {
221 rstr.push_back( r[rand() % strlen(r)] );