Fade out and pause music on death and resume on restart of level, fixes #1064

[supertux.git] / src / audio / stream_sound_source.cpp

diff --git a/src/audio/stream_sound_source.cpp b/src/audio/stream_sound_source.cpp
index 6119796..e51a2e5 100644 (file)
--- a/src/audio/stream_sound_source.cpp
+++ b/src/audio/stream_sound_source.cpp
@@ -1,34 +1,58 @@
-#include <config.h>
+//  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 3 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, see <http://www.gnu.org/licenses/>.
 
-#include <SDL.h>
-#include "stream_sound_source.hpp"
-#include "sound_manager.hpp"
-#include "sound_file.hpp"
+#include "audio/sound_file.hpp"
+#include "audio/sound_manager.hpp"
+#include "audio/stream_sound_source.hpp"
+#include "supertux/timer.hpp"
+#include "util/log.hpp"
 
-StreamSoundSource::StreamSoundSource()
-  : file(0), fade_state(NoFading)
+StreamSoundSource::StreamSoundSource() :
+  file(),
+  fade_state(NoFading),
+  fade_start_time(),
+  fade_time(),
+  looping(false)
 {
   alGenBuffers(STREAMFRAGMENTS, buffers);
   SoundManager::check_al_error("Couldn't allocate audio buffers: ");
+  //add me to update list
+  SoundManager::current()->register_for_update( this );
 }
 
 StreamSoundSource::~StreamSoundSource()
 {
-  delete file;
+  //don't update me any longer
+  SoundManager::current()->remove_from_update( this );
+  file.reset();
+  stop();
   alDeleteBuffers(STREAMFRAGMENTS, buffers);
   SoundManager::check_al_error("Couldn't delete audio buffers: ");
 }
 
 void
-StreamSoundSource::set_sound_file(SoundFile* newfile)
+StreamSoundSource::set_sound_file(std::unique_ptr<SoundFile> newfile)
 {
-  delete file;
-  file = newfile;
+  file = std::move(newfile);
 
   ALint queued;
   alGetSourcei(source, AL_BUFFERS_QUEUED, &queued);
   for(size_t i = 0; i < STREAMFRAGMENTS - queued; ++i) {
-    fillBufferAndQueue(buffers[i]);
+    if(fillBufferAndQueue(buffers[i]) == false)
+      break;
   }
 }
 
@@ -40,40 +64,36 @@ StreamSoundSource::update()
   for(ALint i = 0; i < processed; ++i) {
     ALuint buffer;
     alSourceUnqueueBuffers(source, 1, &buffer);
-    SoundManager::check_al_error("Couldn't unqueu audio buffer: ");
+    SoundManager::check_al_error("Couldn't unqueue audio buffer: ");
 
-    fillBufferAndQueue(buffer);
+    if(fillBufferAndQueue(buffer) == false)
+      break;
   }
 
   if(!playing()) {
-    if(processed == 0)
+    if(processed == 0 || !looping)
       return;
-    
-    // we might have to restart the source if we had a buffer underrun  
-    std::cerr << "Restarting audio source because of buffer underrun.\n";
+
+    // we might have to restart the source if we had a buffer underrun
+    log_info << "Restarting audio source because of buffer underrun" << std::endl;
     play();
   }
 
-#ifdef DEBUG
-  ALint queued;
-  alGetSourcei(source, AL_BUFFERS_QUEUED, &queued);
-  assert(queued == (ALint) STREAMFRAGMENTS);
-#endif
-
-  if(fade_state == FadingOn) {
-    Uint32 ticks = SDL_GetTicks();
-    float time = (ticks - fade_start_ticks) / 1000.0;
+  if(fade_state == FadingOn || fade_state == FadingResume) {
+    float time = real_time - fade_start_time;
     if(time >= fade_time) {
       set_gain(1.0);
       fade_state = NoFading;
     } else {
       set_gain(time / fade_time);
     }
-  } else if(fade_state == FadingOff) {
-    Uint32 ticks = SDL_GetTicks();
-    float time = (ticks - fade_start_ticks) / 1000.0;
+  } else if(fade_state == FadingOff || fade_state == FadingPause) {
+    float time = real_time - fade_start_time;
     if(time >= fade_time) {
-      stop();
+      if(fade_state == FadingOff)
+        stop();
+      else
+        pause();
       fade_state = NoFading;
     } else {
       set_gain( (fade_time-time) / fade_time);
@@ -82,32 +102,42 @@ StreamSoundSource::update()
 }
 
 void
-StreamSoundSource::set_fading(FadeState state, float fade_time)
+StreamSoundSource::set_fading(FadeState state, float fade_time_)
 {
   this->fade_state = state;
-  this->fade_time = fade_time;
-  this->fade_start_ticks = SDL_GetTicks();
+  this->fade_time = fade_time_;
+  this->fade_start_time = real_time;
 }
 
-void
+bool
 StreamSoundSource::fillBufferAndQueue(ALuint buffer)
 {
   // fill buffer
-  char* bufferdata = new char[STREAMFRAGMENTSIZE];
+  std::unique_ptr<char[]> bufferdata(new char[STREAMFRAGMENTSIZE]);
   size_t bytesread = 0;
   do {
-    bytesread += file->read(bufferdata + bytesread,
-        STREAMFRAGMENTSIZE - bytesread);
+    bytesread += file->read(bufferdata.get() + bytesread,
+                            STREAMFRAGMENTSIZE - bytesread);
+    // end of sound file
     if(bytesread < STREAMFRAGMENTSIZE) {
-      file->reset();
+      if(looping)
+        file->reset();
+      else
+        break;
     }
   } while(bytesread < STREAMFRAGMENTSIZE);
-  
-  ALenum format = SoundManager::get_sample_format(file);
-  alBufferData(buffer, format, bufferdata, STREAMFRAGMENTSIZE, file->rate);
-  delete[] bufferdata;
-  SoundManager::check_al_error("Couldn't refill audio buffer: ");
-
-  alSourceQueueBuffers(source, 1, &buffer);
-  SoundManager::check_al_error("Couldn't queue audio buffer: ");
+
+  if(bytesread > 0) {
+    ALenum format = SoundManager::get_sample_format(*file);
+    alBufferData(buffer, format, bufferdata.get(), bytesread, file->rate);
+    SoundManager::check_al_error("Couldn't refill audio buffer: ");
+
+    alSourceQueueBuffers(source, 1, &buffer);
+    SoundManager::check_al_error("Couldn't queue audio buffer: ");
+  }
+
+  // return false if there aren't more buffers to fill
+  return bytesread >= STREAMFRAGMENTSIZE;
 }
+
+/* EOF */