1 // soundmgr.hxx -- Sound effect management class
3 // Sound manager initially written by David Findlay
4 // <david_j_findlay@yahoo.com.au> 2001
6 // C++-ified by Curtis Olson, started March 2001.
8 // Copyright (C) 2001 Curtis L. Olson - http://www.flightgear.org/~curt
10 // This program is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU General Public License as
12 // published by the Free Software Foundation; either version 2 of the
13 // License, or (at your option) any later version.
15 // This program is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // General Public License for more details.
20 // You should have received a copy of the GNU General Public License
21 // along with this program; if not, write to the Free Software
22 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 * Provides a sound manager class to keep track of
29 * multiple sounds and manage playing them with different effects and
33 #ifndef _SG_SOUNDMGR_OPENAL_HXX
34 #define _SG_SOUNDMGR_OPENAL_HXX 1
37 # error This library requires C++
44 #if defined(__APPLE__)
45 # define AL_ILLEGAL_ENUM AL_INVALID_ENUM
46 # define AL_ILLEGAL_COMMAND AL_INVALID_OPERATION
47 # include <OpenAL/al.h>
48 # include <OpenAL/alut.h>
54 #include <simgear/compiler.h>
55 #include <simgear/structure/subsystem_mgr.hxx>
56 #include <simgear/math/SGMathFwd.hxx>
58 #include "sample_group.hxx"
59 #include "sample_openal.hxx"
64 typedef map < string, SGSharedPtr<SGSampleGroup> > sample_group_map;
65 typedef sample_group_map::iterator sample_group_map_iterator;
66 typedef sample_group_map::const_iterator const_sample_group_map_iterator;
70 * Manage a collection of SGSampleGroup instances
72 class SGSoundMgr : public SGSubsystem
82 void update(double dt);
83 void update_late(double dt);
89 inline void reinit() { stop(); init(); }
94 inline bool is_working() const { return _working; }
97 * add a sample group, return true if successful
99 bool add( SGSampleGroup *sgrp, const string& refname );
102 * remove a sample group, return true if successful
104 bool remove( const string& refname );
107 * return true of the specified sound exists in the sound manager system
109 bool exists( const string& refname );
112 * return a pointer to the SGSampleGroup if the specified sound
113 * exists in the sound manager system, otherwise return NULL
115 SGSampleGroup *find( const string& refname, bool create = false );
118 * set the position of the listener (in opengl coordinates)
120 inline void set_position( SGVec3d pos ) {
125 inline double *get_position() {
126 return _listener_pos.data();
130 * set the velocity of the listener (in opengl coordinates)
132 inline void set_velocity( SGVec3f vel ) {
138 * set the orientation of the listener (in opengl coordinates)
140 void set_orientation( SGQuatd ori );
143 NO_SOURCE = (unsigned int)-1,
144 NO_BUFFER = (unsigned int)-1
147 void set_volume( float v );
148 inline float get_volume() { return _volume; }
151 * get a new OpenAL source id
152 * returns NO_SOURCE is no source is available
154 unsigned int request_source();
157 * give back an OpenAL source id for further use.
159 void release_source( unsigned int source );
161 static bool load(string &samplepath, void **data, int *format,
162 unsigned int*size, int *freq );
166 static int _alut_init;
173 ALCcontext *_context;
175 // Position of the listener.
176 SGVec3d _listener_pos;
178 // Velocity of the listener.
179 SGVec3f _listener_vel;
181 // Orientation of the listener.
182 // first 3 elements are "at" vector, second 3 are "up" vector
183 ALfloat _listener_ori[6];
185 sample_group_map _sample_groups;
187 vector<ALuint> _free_sources;
188 vector<ALuint> _sources_in_use;
192 bool testForALError(string s);
193 bool testForALCError(string s);
194 bool testForALUTError(string s);
195 bool testForError(void *p, string s);
196 void update_sample_config( SGSampleGroup *sound );
200 #endif // _SG_SOUNDMGR_OPENAL_HXX