Supertux can now run even if we were unable to open an audio device
[supertux.git] / src / audio / sound_manager.cpp
index 3803fdf..2cac391 100644 (file)
@@ -1,21 +1,44 @@
-#include "sound_manager.h"
+//  $Id$
+//
+//  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.
+
+#include "sound_manager.hpp"
 
 #include <stdexcept>
 #include <iostream>
 #include <sstream>
 #include <memory>
 
-#include "sound_file.h"
-#include "sound_source.h"
-#include "stream_sound_source.h"
+#include "sound_file.hpp"
+#include "sound_source.hpp"
+#include "stream_sound_source.hpp"
+#include "log.hpp"
+#include "timer.hpp"
+
+SoundManager* sound_manager = 0;
 
 SoundManager::SoundManager()
-  : device(0), context(0), sound_enabled(false), music_source(0)
+  : device(0), context(0), sound_enabled(false), music_source(0),
+    music_enabled(true)
 {
   try {
     device = alcOpenDevice(0);
-    if(device == 0) {
-      print_openal_version();
+    if (device == 0) {
       throw std::runtime_error("Couldn't open audio device.");
     }
 
@@ -30,14 +53,15 @@ SoundManager::SoundManager()
   } catch(std::exception& e) {
     device = 0;
     context = 0;
-    std::cerr << "Couldn't initialize audio device:" << e.what() << "\n";
+    log_warning << "Couldn't initialize audio device: " << e.what() << std::endl;
     print_openal_version();
   }
 }
 
 SoundManager::~SoundManager()
 {
-  delete music_source;
+  if(music_source)
+    delete music_source;
 
   for(SoundSources::iterator i = sources.begin(); i != sources.end(); ++i) {
     delete *i;
@@ -49,7 +73,6 @@ SoundManager::~SoundManager()
   }
 
   if(context != 0) {
-    alcMakeContextCurrent(0);
     alcDestroyContext(context);
   }
   if(device != 0) {
@@ -58,12 +81,9 @@ SoundManager::~SoundManager()
 }
 
 ALuint
-SoundManager::load_file_into_buffer(const std::string& filename)
+SoundManager::load_file_into_buffer(SoundFile* file)
 {
-  // open sound file
-  std::auto_ptr<SoundFile> file (load_sound_file(filename));
-  
-  ALenum format = get_sample_format(file.get());
+  ALenum format = get_sample_format(file);
   ALuint buffer;
   alGenBuffers(1, &buffer);
   check_al_error("Couldn't create audio buffer: ");
@@ -96,8 +116,17 @@ SoundManager::create_sound_source(const std::string& filename)
   if(i != buffers.end()) {
     buffer = i->second;
   } else {
-    buffer = load_file_into_buffer(filename);
-    buffers.insert(std::make_pair(filename, buffer));
+    // Load sound file
+    std::auto_ptr<SoundFile> file (load_sound_file(filename));
+
+    if(file->size < 100000) {
+      buffer = load_file_into_buffer(file.get());
+      buffers.insert(std::make_pair(filename, buffer));
+    } else {
+      StreamSoundSource* source = new StreamSoundSource();
+      source->set_sound_file(file.release());
+      return source;
+    }
   }
   
   SoundSource* source = new SoundSource();
@@ -120,7 +149,7 @@ SoundManager::play(const std::string& filename, const Vector& pos)
     source->play();
     sources.push_back(source);
   } catch(std::exception& e) {
-    std::cout << "Couldn't play sound " << filename << ": " << e.what() << "\n";
+    log_warning << "Couldn't play sound " << filename << ": " << e.what() << std::endl;
   }
 }
 
@@ -149,37 +178,65 @@ SoundManager::enable_music(bool enable)
 }
 
 void
-SoundManager::play_music(const std::string& filename)
+SoundManager::stop_music(float fadetime)
 {
-  if(filename == current_music)
+  if(fadetime > 0) {
+    if(music_source
+        && music_source->get_fade_state() != StreamSoundSource::FadingOff)
+      music_source->set_fading(StreamSoundSource::FadingOff, fadetime);
+  } else {
+    delete music_source;
+    music_source = 0;
+  }
+  current_music = "";
+}
+
+void
+SoundManager::play_music(const std::string& filename, bool fade)
+{
+  if(filename == current_music && music_source != NULL)
     return;
   current_music = filename;
   if(!music_enabled)
     return;
 
-  try {
-    StreamSoundSource* newmusic 
-      = new StreamSoundSource(load_sound_file(filename));
+  if(filename == "") {
+    delete music_source;
+    music_source = 0;
+    return;
+  }
 
+  try {
+    std::auto_ptr<StreamSoundSource> newmusic (new StreamSoundSource());
     alSourcef(newmusic->source, AL_ROLLOFF_FACTOR, 0);
+    newmusic->set_sound_file(load_sound_file(filename));
+    newmusic->set_looping(true);
+    if(fade)
+      newmusic->set_fading(StreamSoundSource::FadingOn, .5f);
     newmusic->play();
+
     delete music_source;
-    music_source = newmusic;
+    music_source = newmusic.release();
   } catch(std::exception& e) {
-    std::cerr << "Couldn't play music file '" << filename << "': "
-      << e.what() << "\n";
+    log_warning << "Couldn't play music file '" << filename << "': " << e.what() << std::endl;
   }
 }
 
 void
-SoundManager::set_listener_position(Vector pos)
+SoundManager::set_listener_position(const Vector& pos)
 {
+  static Uint32 lastticks = 0;
+
+  Uint32 current_ticks = SDL_GetTicks();
+  if(current_ticks - lastticks < 300)
+    return;
+  lastticks = current_ticks;                 
+
   alListener3f(AL_POSITION, pos.x, pos.y, 0);
 }
 
 void
-SoundManager::set_listener_velocity(Vector vel)
+SoundManager::set_listener_velocity(const Vector& vel)
 {
   alListener3f(AL_VELOCITY, vel.x, vel.y, 0);
 }
@@ -187,9 +244,18 @@ SoundManager::set_listener_velocity(Vector vel)
 void
 SoundManager::update()
 {
-  // check for finished sound sources
+  static float lasttime = real_time;
+
+  if(real_time - lasttime < 0.3)
+    return;
+  lasttime = real_time;
+
+  // update and check for finished sound sources
   for(SoundSources::iterator i = sources.begin(); i != sources.end(); ) {
     SoundSource* source = *i;
+
+    source->update();
+    
     if(!source->playing()) {
       delete source;
       i = sources.erase(i);
@@ -198,11 +264,15 @@ SoundManager::update()
     }
   }
   // check streaming sounds
-  if(music_source)
+  if(music_source) {
     music_source->update();
-  
-  alcProcessContext(context);
-  check_alc_error("Error while processing audio context: ");
+  }
+
+  if (context)
+  {
+    alcProcessContext(context);
+    check_alc_error("Error while processing audio context: ");
+  }
 }
 
 ALenum
@@ -232,10 +302,10 @@ SoundManager::get_sample_format(SoundFile* file)
 void
 SoundManager::print_openal_version()
 {
-  std::cout << "OpenAL Vendor: " << alGetString(AL_VENDOR) << "\n"
-            << "OpenAL Version: " << alGetString(AL_VERSION) << "\n" 
-            << "OpenAL Renderer: " << alGetString(AL_RENDERER) << "\n"
-            << "OpenAl Extensions: " << alGetString(AL_RENDERER) << "\n";
+  log_info << "OpenAL Vendor: " << alGetString(AL_VENDOR) << std::endl;
+  log_info << "OpenAL Version: " << alGetString(AL_VERSION) << std::endl;
+  log_info << "OpenAL Renderer: " << alGetString(AL_RENDERER) << std::endl;
+  log_info << "OpenAl Extensions: " << alGetString(AL_EXTENSIONS) << std::endl;
 }
 
 void