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00017 #ifndef __OPENAL_AUDIO_MANAGER_H__
00018 #define __OPENAL_AUDIO_MANAGER_H__
00019
00020 #include "pandabase.h"
00021 #ifdef HAVE_OPENAL //[
00022
00023 #include "audioManager.h"
00024 #include "plist.h"
00025 #include "pmap.h"
00026 #include "pset.h"
00027 #include "movieAudioCursor.h"
00028 #include "reMutex.h"
00029
00030
00031 #ifdef IS_OSX
00032 #include <OpenAL/al.h>
00033 #include <OpenAL/alc.h>
00034 #else
00035 #include <AL/al.h>
00036 #include <AL/alc.h>
00037 #endif
00038
00039 class OpenALAudioSound;
00040
00041 extern void al_audio_errcheck(const char *context);
00042 extern void alc_audio_errcheck(const char *context,ALCdevice* device);
00043
00044 class EXPCL_OPENAL_AUDIO OpenALAudioManager : public AudioManager {
00045 class SoundData;
00046
00047 friend class OpenALAudioSound;
00048 friend class OpenALSoundData;
00049 public:
00050
00051
00052 OpenALAudioManager();
00053 virtual ~OpenALAudioManager();
00054
00055 virtual void shutdown();
00056
00057 virtual bool is_valid();
00058
00059 virtual PT(AudioSound) get_sound(const string&, bool positional = false, int mode=SM_heuristic);
00060 virtual PT(AudioSound) get_sound(MovieAudio *sound, bool positional = false, int mode=SM_heuristic);
00061
00062 virtual void uncache_sound(const string&);
00063 virtual void clear_cache();
00064 virtual void set_cache_limit(unsigned int count);
00065 virtual unsigned int get_cache_limit() const;
00066
00067 virtual void set_volume(PN_stdfloat);
00068 virtual PN_stdfloat get_volume() const;
00069
00070 void set_play_rate(PN_stdfloat play_rate);
00071 PN_stdfloat get_play_rate() const;
00072
00073 virtual void set_active(bool);
00074 virtual bool get_active() const;
00075
00076
00077
00078
00079
00080
00081
00082 virtual void audio_3d_set_listener_attributes(PN_stdfloat px, PN_stdfloat py, PN_stdfloat pz,
00083 PN_stdfloat vx, PN_stdfloat xy, PN_stdfloat xz,
00084 PN_stdfloat fx, PN_stdfloat fy, PN_stdfloat fz,
00085 PN_stdfloat ux, PN_stdfloat uy, PN_stdfloat uz);
00086
00087 virtual void audio_3d_get_listener_attributes(PN_stdfloat *px, PN_stdfloat *py, PN_stdfloat *pz,
00088 PN_stdfloat *vx, PN_stdfloat *vy, PN_stdfloat *vz,
00089 PN_stdfloat *fx, PN_stdfloat *fy, PN_stdfloat *fz,
00090 PN_stdfloat *ux, PN_stdfloat *uy, PN_stdfloat *uz);
00091
00092
00093
00094
00095
00096 virtual void audio_3d_set_distance_factor(PN_stdfloat factor);
00097 virtual PN_stdfloat audio_3d_get_distance_factor() const;
00098
00099
00100
00101
00102 virtual void audio_3d_set_doppler_factor(PN_stdfloat factor);
00103 virtual PN_stdfloat audio_3d_get_doppler_factor() const;
00104
00105
00106
00107
00108 virtual void audio_3d_set_drop_off_factor(PN_stdfloat factor);
00109 virtual PN_stdfloat audio_3d_get_drop_off_factor() const;
00110
00111 virtual void set_concurrent_sound_limit(unsigned int limit = 0);
00112 virtual unsigned int get_concurrent_sound_limit() const;
00113 virtual void reduce_sounds_playing_to(unsigned int count);
00114
00115 virtual void stop_all_sounds();
00116
00117 virtual void update();
00118
00119 private:
00120 void make_current() const;
00121
00122 bool can_use_audio(MovieAudioCursor *source);
00123 bool should_load_audio(MovieAudioCursor *source, int mode);
00124
00125 SoundData *get_sound_data(MovieAudio *source, int mode);
00126
00127
00128 void release_sound(OpenALAudioSound* audioSound);
00129 void increment_client_count(SoundData *sd);
00130 void decrement_client_count(SoundData *sd);
00131 void discard_excess_cache(int limit);
00132
00133 void starting_sound(OpenALAudioSound* audio);
00134 void stopping_sound(OpenALAudioSound* audio);
00135
00136 void cleanup();
00137
00138 private:
00139
00140 static ReMutex _lock;
00141
00142
00143
00144
00145
00146
00147
00148 typedef plist<void *> ExpirationQueue;
00149 ExpirationQueue _expiring_samples;
00150 ExpirationQueue _expiring_streams;
00151
00152
00153
00154
00155
00156
00157
00158
00159
00160
00161
00162
00163 class SoundData {
00164 public:
00165 SoundData();
00166 ~SoundData();
00167 OpenALAudioManager* _manager;
00168 PT(MovieAudio) _movie;
00169 ALuint _sample;
00170 PT(MovieAudioCursor) _stream;
00171 double _length;
00172 int _rate;
00173 int _channels;
00174 int _client_count;
00175 ExpirationQueue::iterator _expire;
00176 };
00177
00178
00179 typedef phash_map<string, SoundData *> SampleCache;
00180 SampleCache _sample_cache;
00181
00182 typedef phash_set<PT(OpenALAudioSound)> SoundsPlaying;
00183 SoundsPlaying _sounds_playing;
00184
00185 typedef phash_set<OpenALAudioSound *> AllSounds;
00186 AllSounds _all_sounds;
00187
00188
00189 int _cache_limit;
00190 PN_stdfloat _volume;
00191 PN_stdfloat _play_rate;
00192 bool _active;
00193 bool _cleanup_required;
00194
00195 static int _active_managers;
00196 static bool _openal_active;
00197 unsigned int _concurrent_sound_limit;
00198
00199 bool _is_valid;
00200
00201 typedef pset<OpenALAudioManager *> Managers;
00202 static Managers *_managers;
00203
00204 static ALCdevice* _device;
00205 static ALCcontext* _context;
00206
00207
00208 typedef pset<ALuint > SourceCache;
00209 static SourceCache *_al_sources;
00210
00211 PN_stdfloat _distance_factor;
00212 PN_stdfloat _doppler_factor;
00213 PN_stdfloat _drop_off_factor;
00214
00215 ALfloat _position[3];
00216 ALfloat _velocity[3];
00217 ALfloat _forward_up[6];
00218
00219
00220
00221
00222
00223 public:
00224 static TypeHandle get_class_type() {
00225 return _type_handle;
00226 }
00227 static void init_type() {
00228 AudioManager::init_type();
00229 register_type(_type_handle, "OpenALAudioManager", AudioManager::get_class_type());
00230 }
00231 virtual TypeHandle get_type() const {
00232 return get_class_type();
00233 }
00234 virtual TypeHandle force_init_type() {
00235 init_type();
00236 return get_class_type();
00237 }
00238
00239 private:
00240 static TypeHandle _type_handle;
00241
00242
00243
00244
00245
00246 };
00247
00248 EXPCL_OPENAL_AUDIO AudioManager *Create_OpenALAudioManager();
00249
00250
00251 #endif //]
00252
00253 #endif