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[supertux.git] / src / audio / sound_manager.hpp

diff --git a/src/audio/sound_manager.hpp b/src/audio/sound_manager.hpp
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+//  $Id$
+//
+//  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 2
+//  of the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#ifndef __SOUND_MANAGER_H__
+#define __SOUND_MANAGER_H__
+
+#include <string>
+#include <vector>
+#include <map>
+
+#ifndef MACOSX
+#include <AL/alc.h>
+#include <AL/al.h>
+#else
+#include <OpenAL/alc.h>
+#include <OpenAL/al.h>
+#endif
+
+#include "math/vector.hpp"
+
+class SoundFile;
+class SoundSource;
+class StreamSoundSource;
+class OpenALSoundSource;
+
+class SoundManager
+{
+public:
+  SoundManager();
+  virtual ~SoundManager();
+
+  void enable_sound(bool sound_enabled);
+  /**
+   * Creates a new sound source object which plays the specified soundfile.
+   * You are responsible for deleting the sound source later (this will stop the
+   * sound).
+   * This function never throws exceptions, but might return a DummySoundSource
+   */
+  SoundSource* create_sound_source(const std::string& filename);
+  /**
+   * Convenience function to simply play a sound at a given position.
+   */
+  void play(const std::string& name, const Vector& pos = Vector(-1, -1));
+  /**
+   * Adds the source to the list of managed sources (= the source gets deleted
+   * when it finished playing)
+   */
+  void manage_source(SoundSource* source);
+  /// preloads a sound, so that you don't get a lag later when playing it
+  void preload(const std::string& name);
+
+  void set_listener_position(const Vector& position);
+  void set_listener_velocity(const Vector& velocity);
+
+  void enable_music(bool music_enabled);
+  void play_music(const std::string& filename, bool fade = false);
+  void stop_music(float fadetime = 0);
+
+  bool is_music_enabled() { return music_enabled; }
+  bool is_sound_enabled() { return sound_enabled; }
+
+  bool is_audio_enabled() {
+                       return device != 0 && context != 0;
+  }
+
+  void update();
+
+  /*
+   * Tell soundmanager to call update() for stream_sound_source.
+   */
+  void register_for_update( StreamSoundSource* sss );
+  /*
+   * Unsubscribe from updates for stream_sound_source.
+   */
+  void remove_from_update( StreamSoundSource* sss );
+
+private:
+  friend class OpenALSoundSource;
+  friend class StreamSoundSource;
+
+  /** creates a new sound source, might throw exceptions, never returns NULL */
+  OpenALSoundSource* intern_create_sound_source(const std::string& filename);
+  static ALuint load_file_into_buffer(SoundFile* file);
+  static ALenum get_sample_format(SoundFile* file);
+
+  void print_openal_version();
+  void check_alc_error(const char* message);
+  static void check_al_error(const char* message);
+
+  ALCdevice* device;
+  ALCcontext* context;
+  bool sound_enabled;
+
+  typedef std::map<std::string, ALuint> SoundBuffers;
+  SoundBuffers buffers;
+  typedef std::vector<OpenALSoundSource*> SoundSources;
+  SoundSources sources;
+
+  typedef std::vector<StreamSoundSource*> StreamSoundSources;
+  StreamSoundSources update_list;
+
+  StreamSoundSource* music_source;
+
+  bool music_enabled;
+  std::string current_music;
+};
+
+extern SoundManager* sound_manager;
+
+#endif