X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Flibgame%2Fsound.c;h=e635c846799f4dec40d0cc4d1a4686036b3b812d;hb=9a7426789c04bf396df78eb915522f9e57af985e;hp=3b938200021f40a52504a665a164b3d65b66b99b;hpb=d0e7ff980c3d4d73ac39c2670177e6030b966760;p=rocksndiamonds.git

diff --git a/src/libgame/sound.c b/src/libgame/sound.c
index 3b938200..e635c846 100644
--- a/src/libgame/sound.c
+++ b/src/libgame/sound.c
@@ -24,6 +24,23 @@
 #include "setup.h"
 
 
+struct ListNode
+{
+  char *key;
+  void *content;
+  struct ListNode *next;
+};
+typedef struct ListNode ListNode;
+
+static ListNode *newListNode(void);
+static void addNodeToList(ListNode **, char *, void *);
+static void deleteNodeFromList(ListNode **, char *, void (*function)(void *));
+static ListNode *getNodeFromKey(ListNode *, char *);
+static int getNumNodes(ListNode *);
+
+
+static struct SoundEffectInfo *sound_effect;
+static ListNode *SoundFileList = NULL;
 static SoundInfo **Sound = NULL;
 static MusicInfo **Music = NULL;
 static int num_sounds = 0, num_music = 0;
@@ -32,62 +49,79 @@ static int num_sounds = 0, num_music = 0;
 /* ========================================================================= */
 /* THE STUFF BELOW IS ONLY USED BY THE SOUND SERVER CHILD PROCESS            */
 
+static struct AudioFormatInfo afmt =
+{
+  TRUE, 0, DEFAULT_AUDIO_SAMPLE_RATE, DEFAULT_AUDIO_FRAGMENT_SIZE
+};
+
 static int playing_sounds = 0;
-static struct SoundControl playlist[MAX_SOUNDS_PLAYING];
+static struct SoundControl playlist[NUM_MIXER_CHANNELS];
 static struct SoundControl emptySoundControl =
 {
+#if 1
+  FALSE, -1, 0, 0, FALSE, 0, 0, 0, NULL
+#else
   -1,0,0, FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE, 0,0, 0,NULL
+#endif
 };
 
 #if defined(PLATFORM_UNIX)
-static int stereo_volume[PSND_MAX_LEFT2RIGHT+1];
-static char premix_first_buffer[SND_BLOCKSIZE];
+static int stereo_volume[PSND_MAX_LEFT2RIGHT + 1];
+static short premix_first_buffer[SND_BLOCKSIZE];
 #if defined(AUDIO_STREAMING_DSP)
-static char premix_left_buffer[SND_BLOCKSIZE];
-static char premix_right_buffer[SND_BLOCKSIZE];
-static int premix_last_buffer[SND_BLOCKSIZE];
+static short premix_left_buffer[SND_BLOCKSIZE];
+static short premix_right_buffer[SND_BLOCKSIZE];
+static long premix_last_buffer[SND_BLOCKSIZE];
 #endif
-static unsigned char playing_buffer[SND_BLOCKSIZE];
+static byte playing_buffer[SND_BLOCKSIZE];
 #endif
 
 /* forward declaration of internal functions */
 #if defined(AUDIO_STREAMING_DSP)
 static void SoundServer_InsertNewSound(struct SoundControl);
+static void InitAudioDevice_DSP(struct AudioFormatInfo *);
+#elif defined(PLATFORM_HPUX)
+static void InitAudioDevice_HPUX(struct AudioFormatInfo *);
 #elif defined(PLATFORM_UNIX)
 static unsigned char linear_to_ulaw(int);
 static int ulaw_to_linear(unsigned char);
-#endif
-
-#if defined(AUDIO_LINUX_IOCTL)
-static boolean InitAudioDevice_Linux();
-#elif defined(PLATFORM_NETBSD)
-static boolean InitAudioDevice_NetBSD();
-#elif defined(PLATFORM_HPUX)
-static boolean InitAudioDevice_HPUX();
 #elif defined(PLATFORM_MSDOS)
 static void SoundServer_InsertNewSound(struct SoundControl);
 static void SoundServer_StopSound(struct SoundControl);
 static void SoundServer_StopAllSounds();
 #endif
 
+static void ReloadCustomSounds();
+static void ReloadCustomMusic();
+static void FreeSound(void *);
+
 #if defined(PLATFORM_UNIX)
 static int OpenAudioDevice(char *audio_device_name)
 {
-  int audio_fd;
+  int audio_device_fd;
 
   /* check if desired audio device is accessible */
   if (access(audio_device_name, W_OK) != 0)
     return -1;
 
   /* try to open audio device in non-blocking mode */
-  if ((audio_fd = open(audio_device_name, O_WRONLY | O_NONBLOCK)) < 0)
-    return audio_fd;
+  if ((audio_device_fd = open(audio_device_name, O_WRONLY | O_NONBLOCK)) < 0)
+    return audio_device_fd;
 
   /* re-open audio device in blocking mode */
-  close(audio_fd);
-  audio_fd = open(audio_device_name, O_WRONLY);
+  close(audio_device_fd);
+  audio_device_fd = open(audio_device_name, O_WRONLY);
+
+  return audio_device_fd;
+}
 
-  return audio_fd;
+static void CloseAudioDevice(int *audio_device_fd)
+{
+  if (*audio_device_fd == 0)
+    return;
+
+  close(*audio_device_fd);
+  *audio_device_fd = -1;
 }
 
 static boolean TestAudioDevices(void)
@@ -97,21 +131,21 @@ static boolean TestAudioDevices(void)
     DEVICENAME_DSP,
     DEVICENAME_AUDIO
   };
-  int audio_fd = -1;
+  int audio_device_fd = -1;
   int i;
 
   /* look for available audio devices, starting with preferred ones */
   for (i=0; i<sizeof(audio_device_name)/sizeof(char *); i++)
-    if ((audio_fd = OpenAudioDevice(audio_device_name[i])) >= 0)
+    if ((audio_device_fd = OpenAudioDevice(audio_device_name[i])) >= 0)
       break;
 
-  if (audio_fd < 0)
+  if (audio_device_fd < 0)
   {
     Error(ERR_WARN, "cannot open audio device -- no sound");
     return FALSE;
   }
 
-  close(audio_fd);
+  close(audio_device_fd);
 
   audio.device_name = audio_device_name[i];
 
@@ -175,11 +209,167 @@ void InitPlaylist(void)
 {
   int i;
 
-  for(i=0; i<MAX_SOUNDS_PLAYING; i++)
+  for(i=0; i<NUM_MIXER_CHANNELS; i++)
     playlist[i] = emptySoundControl;
   playing_sounds = 0;
 }
 
+#if 1
+static void PlaylistRemoveSound(int pos)
+{
+  if (!playing_sounds || !playlist[pos].active)
+    return;
+
+  playlist[pos] = emptySoundControl;
+  playing_sounds--;
+
+  if (!playing_sounds)
+    CloseAudioDevice(&audio.device_fd);
+}
+
+static void WriteReloadInfoToPipe(char *set_name, int type)
+{
+  struct SoundControl snd_ctrl = emptySoundControl;
+  TreeInfo *ti = (type == SND_CTRL_RELOAD_SOUNDS ? artwork.snd_current :
+		  artwork.mus_current);
+  unsigned long str_size1 = strlen(leveldir_current->fullpath) + 1;
+  unsigned long str_size2 = strlen(ti->basepath) + 1;
+  unsigned long str_size3 = strlen(ti->fullpath) + 1;
+
+  snd_ctrl.state = type;
+  snd_ctrl.data_len = strlen(set_name) + 1;
+
+  if (write(audio.soundserver_pipe[1], &snd_ctrl,
+	    sizeof(snd_ctrl)) < 0 ||
+      write(audio.soundserver_pipe[1], set_name,
+	    snd_ctrl.data_len) < 0 ||
+      write(audio.soundserver_pipe[1], leveldir_current,
+	    sizeof(TreeInfo)) < 0 ||
+      write(audio.soundserver_pipe[1], ti,
+	    sizeof(TreeInfo)) < 0 ||
+      write(audio.soundserver_pipe[1], &str_size1,
+	    sizeof(unsigned long)) < 0 ||
+      write(audio.soundserver_pipe[1], &str_size2,
+	    sizeof(unsigned long)) < 0 ||
+      write(audio.soundserver_pipe[1], &str_size3,
+	    sizeof(unsigned long)) < 0 ||
+      write(audio.soundserver_pipe[1], leveldir_current->fullpath,
+	    str_size1) < 0 ||
+      write(audio.soundserver_pipe[1], ti->basepath,
+	    str_size2) < 0 ||
+      write(audio.soundserver_pipe[1], ti->fullpath,
+	    str_size3) < 0)
+  {
+    Error(ERR_WARN, "cannot pipe to child process -- no sounds");
+    audio.sound_available = audio.sound_enabled = FALSE;
+    return;
+  }
+}
+
+static void ReadReloadInfoFromPipe(struct SoundControl snd_ctrl)
+{
+  TreeInfo **ti_ptr = ((snd_ctrl.state & SND_CTRL_RELOAD_SOUNDS) ?
+		       &artwork.snd_current : &artwork.mus_current);
+  TreeInfo *ti = *ti_ptr;
+  unsigned long str_size1, str_size2, str_size3;
+  static char *set_name = NULL;
+
+  if (set_name)
+    free(set_name);
+
+  set_name = checked_malloc(snd_ctrl.data_len);
+
+  if (leveldir_current == NULL)
+    leveldir_current = checked_calloc(sizeof(TreeInfo));
+  if (ti == NULL)
+    ti = *ti_ptr = checked_calloc(sizeof(TreeInfo));
+  if (leveldir_current->fullpath != NULL)
+    free(leveldir_current->fullpath);
+  if (ti->basepath != NULL)
+    free(ti->basepath);
+  if (ti->fullpath != NULL)
+    free(ti->fullpath);
+
+  if (read(audio.soundserver_pipe[0], set_name,
+	   snd_ctrl.data_len) != snd_ctrl.data_len ||
+      read(audio.soundserver_pipe[0], leveldir_current,
+	   sizeof(TreeInfo)) != sizeof(TreeInfo) ||
+      read(audio.soundserver_pipe[0], ti,
+	   sizeof(TreeInfo)) != sizeof(TreeInfo) ||
+      read(audio.soundserver_pipe[0], &str_size1,
+	   sizeof(unsigned long)) != sizeof(unsigned long) ||
+      read(audio.soundserver_pipe[0], &str_size2,
+	   sizeof(unsigned long)) != sizeof(unsigned long) ||
+      read(audio.soundserver_pipe[0], &str_size3,
+	   sizeof(unsigned long)) != sizeof(unsigned long))
+    Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
+
+  leveldir_current->fullpath = checked_calloc(str_size1);
+  ti->basepath = checked_calloc(str_size2);
+  ti->fullpath = checked_calloc(str_size3);
+
+  if (read(audio.soundserver_pipe[0], leveldir_current->fullpath,
+	   str_size1) != str_size1 ||
+      read(audio.soundserver_pipe[0], ti->basepath,
+	   str_size2) != str_size2 ||
+      read(audio.soundserver_pipe[0], ti->fullpath,
+	   str_size3) != str_size3)
+    Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
+
+  if (snd_ctrl.state & SND_CTRL_RELOAD_SOUNDS)
+    artwork.sounds_set_current = set_name;
+  else
+    artwork.music_set_current = set_name;
+}
+
+static void HandleSoundRequest(struct SoundControl snd_ctrl)
+{
+  int i;
+
+  if (IS_RELOADING(snd_ctrl))
+  {
+    ReadReloadInfoFromPipe(snd_ctrl);
+    InitPlaylist();
+    CloseAudioDevice(&audio.device_fd);
+
+    if (snd_ctrl.state & SND_CTRL_RELOAD_SOUNDS)
+      ReloadCustomSounds();
+    else
+      ReloadCustomMusic();
+  }
+  else if (IS_FADING(snd_ctrl))
+  {
+    if (!playing_sounds)
+      return;
+
+    if (IS_MUSIC(snd_ctrl))
+    {
+      playlist[MUSIC_CHANNEL].state |= SND_CTRL_FADE;
+      return;
+    }
+
+    for(i=FIRST_SOUND_CHANNEL; i<NUM_MIXER_CHANNELS; i++)
+      if (playlist[i].nr == snd_ctrl.nr || ALL_SOUNDS(snd_ctrl))
+	playlist[i].state |= SND_CTRL_FADE;
+  }
+  else if (IS_STOPPING(snd_ctrl))
+  {
+    if (!playing_sounds)
+      return;
+
+    if (IS_MUSIC(snd_ctrl))
+    {
+      PlaylistRemoveSound(MUSIC_CHANNEL);
+      return;
+    }
+
+    for(i=FIRST_SOUND_CHANNEL; i<NUM_MIXER_CHANNELS; i++)
+      if (playlist[i].nr == snd_ctrl.nr || ALL_SOUNDS(snd_ctrl))
+	PlaylistRemoveSound(i);
+  }
+}
+#endif
+
 void StartSoundserver(void)
 {
   if (!audio.sound_available)
@@ -209,7 +399,7 @@ void SoundServer(void)
       (int)sqrt((float)(PSND_MAX_LEFT2RIGHT * PSND_MAX_LEFT2RIGHT - i * i));
 
 #if defined(PLATFORM_HPUX)
-  InitAudioDevice_HPUX();
+  InitAudioDevice_HPUX(&afmt);
 #endif
 
   FD_ZERO(&sound_fdset); 
@@ -225,143 +415,22 @@ void SoundServer(void)
 	!= sizeof(snd_ctrl))
       Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
 
-    if (snd_ctrl.reload_sounds || snd_ctrl.reload_music)
-    {
-      char *set_name = checked_malloc(snd_ctrl.data_len);
-      TreeInfo **ti_ptr =
-	(snd_ctrl.reload_sounds ? &artwork.snd_current : &artwork.mus_current);
-      TreeInfo *ti = *ti_ptr;
-      unsigned long str_size1, str_size2, str_size3;
-
-      if (leveldir_current == NULL)
-	leveldir_current = checked_calloc(sizeof(TreeInfo));
-      if (ti == NULL)
-	ti = *ti_ptr = checked_calloc(sizeof(TreeInfo));
-      if (leveldir_current->fullpath != NULL)
-	free(leveldir_current->fullpath);
-      if (ti->basepath != NULL)
-	free(ti->basepath);
-      if (ti->fullpath != NULL)
-	free(ti->fullpath);
-
-      if (read(audio.soundserver_pipe[0], set_name,
-	       snd_ctrl.data_len) != snd_ctrl.data_len ||
-	  read(audio.soundserver_pipe[0], leveldir_current,
-	       sizeof(TreeInfo)) != sizeof(TreeInfo) ||
-	  read(audio.soundserver_pipe[0], ti,
-	       sizeof(TreeInfo)) != sizeof(TreeInfo) ||
-	  read(audio.soundserver_pipe[0], &str_size1,
-	       sizeof(unsigned long)) != sizeof(unsigned long) ||
-	  read(audio.soundserver_pipe[0], &str_size2,
-	       sizeof(unsigned long)) != sizeof(unsigned long) ||
-	  read(audio.soundserver_pipe[0], &str_size3,
-	       sizeof(unsigned long)) != sizeof(unsigned long))
-	Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
-
-      leveldir_current->fullpath = checked_calloc(str_size1);
-      ti->basepath = checked_calloc(str_size2);
-      ti->fullpath = checked_calloc(str_size3);
-
-      if (read(audio.soundserver_pipe[0], leveldir_current->fullpath,
-	       str_size1) != str_size1 ||
-	  read(audio.soundserver_pipe[0], ti->basepath,
-	       str_size2) != str_size2 ||
-	  read(audio.soundserver_pipe[0], ti->fullpath,
-	       str_size3) != str_size3)
-	Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
-
-      InitPlaylist();
-
-      close(audio.device_fd);
-
-      if (snd_ctrl.reload_sounds)
-      {
-	artwork.sounds_set_current = set_name;
-	audio.func_reload_sounds();
-      }
-      else
-      {
-	artwork.music_set_current = set_name;
-	audio.func_reload_music();
-      }
-
-      free(set_name);
+    HandleSoundRequest(snd_ctrl);
 
+    if (IS_RELOADING(snd_ctrl))
       continue;
-    }
 
 #if defined(AUDIO_STREAMING_DSP)
 
-    if (snd_ctrl.fade_sound)
-    {
-      if (!playing_sounds)
-	continue;
-
-      if (snd_ctrl.music)
-	playlist[audio.music_channel].fade_sound = TRUE;
-      else
-	for(i=0; i<MAX_SOUNDS_PLAYING; i++)
-	  if (snd_ctrl.stop_all_sounds ||
-	      (i != audio.music_channel && playlist[i].nr == snd_ctrl.nr))
-	    playlist[i].fade_sound = TRUE;
-    }
-    else if (snd_ctrl.stop_all_sounds)
-    {
-      if (!playing_sounds)
-	continue;
-
-      for(i=0; i<MAX_SOUNDS_PLAYING; i++)
-	playlist[i] = emptySoundControl;
-      playing_sounds = 0;
-
-      close(audio.device_fd);
-    }
-    else if (snd_ctrl.stop_sound)
-    {
-      if (!playing_sounds)
-	continue;
-
-      if (snd_ctrl.music)
-      {
-	playlist[audio.music_channel] = emptySoundControl;
-	playing_sounds--;
-      }
-
-      for(i=0; i<MAX_SOUNDS_PLAYING; i++)
-      {
-	if (i != audio.music_channel && playlist[i].nr == snd_ctrl.nr)
-	{
-	  playlist[i] = emptySoundControl;
-	  playing_sounds--;
-	}
-      }
-
-      if (!playing_sounds)
-	close(audio.device_fd);
-    }
-
     if (playing_sounds || snd_ctrl.active)
     {
-      struct timeval delay = { 0, 0 };
-      byte *sample_ptr;
-      long sample_size;
-      static long max_sample_size = 0;
-      static long fragment_size = DEFAULT_AUDIO_FRAGMENT_SIZE;
-      int sample_rate = DEFAULT_AUDIO_SAMPLE_RATE;
-      static boolean stereo = TRUE;
-
       if (playing_sounds ||
 	  (audio.device_fd = OpenAudioDevice(audio.device_name)) >= 0)
       {
+	struct timeval delay = { 0, 0 };
+
 	if (!playing_sounds)	/* we just opened the audio device */
-	{
-#if defined(AUDIO_LINUX_IOCTL)
-	  stereo = InitAudioDevice_Linux(fragment_size, sample_rate);
-#elif defined(PLATFORM_NETBSD)
-	  stereo = InitAudioDevice_NetBSD(fragment_size, sample_rate);
-#endif
-	  max_sample_size = fragment_size / (stereo ? 2 : 1);
-	}
+	  InitAudioDevice_DSP(&afmt);
 
 	if (snd_ctrl.active)	/* new sound has arrived */
 	  SoundServer_InsertNewSound(snd_ctrl);
@@ -370,38 +439,71 @@ void SoundServer(void)
 	       select(audio.soundserver_pipe[0] + 1,
 		      &sound_fdset, NULL, NULL, &delay) < 1)
 	{	
+	  int max_sample_size;
+	  int fragment_size = afmt.fragment_size;
+	  int sample_bytes = (afmt.format & AUDIO_FORMAT_U8 ? 1 : 2);
+	  boolean stereo = afmt.stereo;
+
 	  FD_SET(audio.soundserver_pipe[0], &sound_fdset);
 
+	  max_sample_size = fragment_size / ((stereo ? 2 : 1) * sample_bytes);
+
 	  /* first clear the last premixing buffer */
-	  memset(premix_last_buffer, 0, fragment_size * sizeof(int));
+	  memset(premix_last_buffer, 0,
+		 max_sample_size * (stereo ? 2 : 1) * sizeof(long));
 
-	  for(i=0;i<MAX_SOUNDS_PLAYING;i++)
+	  for(i=0; i<NUM_MIXER_CHANNELS; i++)
 	  {
+	    void *sample_ptr;
+	    int sample_len;
+	    int sample_pos;
+	    int sample_size;
 	    int j;
 
 	    if (!playlist[i].active)
 	      continue;
 
-	    /* get pointer and size of the actual sound sample */
-	    sample_ptr = playlist[i].data_ptr + playlist[i].playingpos;
-	    sample_size = MIN(max_sample_size,
-			      playlist[i].data_len - playlist[i].playingpos);
+	    /* pointer, lenght and actual playing position of sound sample */
+	    sample_ptr = playlist[i].data_ptr;
+	    sample_len = playlist[i].data_len;
+	    sample_pos = playlist[i].playingpos;
+	    sample_size = MIN(max_sample_size, sample_len - sample_pos);
 	    playlist[i].playingpos += sample_size;
 
-	    /* fill the first mixing buffer with original sample */
-	    memcpy(premix_first_buffer, sample_ptr, sample_size);
+	    /* copy original sample to first mixing buffer */
+	    if (playlist[i].format == AUDIO_FORMAT_U8)
+	      for (j=0; j<sample_size; j++)
+		premix_first_buffer[j] =
+		  ((short)(((byte *)sample_ptr)[sample_pos + j] ^ 0x80)) << 8;
+	    else	/* AUDIO_FORMAT_S16 */
+	      for (j=0; j<sample_size; j++)
+		premix_first_buffer[j] =
+		  ((short *)sample_ptr)[sample_pos + j];
 
 	    /* are we about to restart a looping sound? */
-	    if (playlist[i].loop && sample_size < max_sample_size)
+	    if (IS_LOOP(playlist[i]) && sample_size < max_sample_size)
 	    {
-	      playlist[i].playingpos = max_sample_size - sample_size;
-	      memcpy(premix_first_buffer + sample_size,
-		     playlist[i].data_ptr, max_sample_size - sample_size);
-	      sample_size = max_sample_size;
+	      while (sample_size < max_sample_size)
+	      {
+		int restarted_sample_size =
+		  MIN(max_sample_size - sample_size, sample_len);
+
+		if (playlist[i].format == AUDIO_FORMAT_U8)
+		  for (j=0; j<restarted_sample_size; j++)
+		    premix_first_buffer[sample_size + j] =
+		      ((short)(((byte *)sample_ptr)[j] ^ 0x80)) << 8;
+		else
+		  for (j=0; j<restarted_sample_size; j++)
+		    premix_first_buffer[sample_size + j] =
+		      ((short *)sample_ptr)[j];
+
+		playlist[i].playingpos = restarted_sample_size;
+		sample_size += restarted_sample_size;
+	      }
 	    }
 
 	    /* decrease volume if sound is fading out */
-	    if (playlist[i].fade_sound &&
+	    if (IS_FADING(playlist[i]) &&
 		playlist[i].volume >= SOUND_FADING_VOLUME_THRESHOLD)
 	      playlist[i].volume -= SOUND_FADING_VOLUME_STEP;
 
@@ -409,38 +511,39 @@ void SoundServer(void)
 	    if (playlist[i].volume != PSND_MAX_VOLUME)
 	      for(j=0; j<sample_size; j++)
 		premix_first_buffer[j] =
-		  (playlist[i].volume * (int)premix_first_buffer[j])
+		  (playlist[i].volume * (long)premix_first_buffer[j])
 		    >> PSND_MAX_VOLUME_BITS;
 
 	    /* fill the last mixing buffer with stereo or mono sound */
 	    if (stereo)
 	    {
-	      int middle_pos = PSND_MAX_LEFT2RIGHT/2;
-	      int left_volume  = stereo_volume[middle_pos +playlist[i].stereo];
-	      int right_volume = stereo_volume[middle_pos -playlist[i].stereo];
+	      int middle_pos = PSND_MAX_LEFT2RIGHT / 2;
+	      int left_volume = stereo_volume[middle_pos + playlist[i].stereo];
+	      int right_volume= stereo_volume[middle_pos - playlist[i].stereo];
 
 	      for(j=0; j<sample_size; j++)
 	      {
 		premix_left_buffer[j] =
-		  (left_volume * (int)premix_first_buffer[j])
+		  (left_volume * premix_first_buffer[j])
 		    >> PSND_MAX_LEFT2RIGHT_BITS;
 		premix_right_buffer[j] =
-		  (right_volume * (int)premix_first_buffer[j])
+		  (right_volume * premix_first_buffer[j])
 		    >> PSND_MAX_LEFT2RIGHT_BITS;
-		premix_last_buffer[2*j+0] += premix_left_buffer[j];
-		premix_last_buffer[2*j+1] += premix_right_buffer[j];
+
+		premix_last_buffer[2 * j + 0] += premix_left_buffer[j];
+		premix_last_buffer[2 * j + 1] += premix_right_buffer[j];
 	      }
 	    }
 	    else
 	    {
-	      for(j=0;j<sample_size;j++)
-		premix_last_buffer[j] += (int)premix_first_buffer[j];
+	      for(j=0; j<sample_size; j++)
+		premix_last_buffer[j] += premix_first_buffer[j];
 	    }
 
 	    /* delete completed sound entries from the playlist */
 	    if (playlist[i].playingpos >= playlist[i].data_len)
 	    {
-	      if (playlist[i].loop)
+	      if (IS_LOOP(playlist[i]))
 		playlist[i].playingpos = 0;
 	      else
 	      {
@@ -455,15 +558,32 @@ void SoundServer(void)
 	    }
 	  }
 
-	  /* put last mixing buffer to final playing buffer */
-	  for(i=0; i<fragment_size; i++)
+	  /* prepare final playing buffer according to system audio format */
+	  for(i=0; i<max_sample_size * (stereo ? 2 : 1); i++)
 	  {
-	    if (premix_last_buffer[i]<-255)
-	      playing_buffer[i] = 0;
-	    else if (premix_last_buffer[i]>255)
-	      playing_buffer[i] = 255;
-	    else
-	      playing_buffer[i] = (premix_last_buffer[i]>>1)^0x80;
+	    /* cut off at 17 bit value */
+	    if (premix_last_buffer[i] < -65535)
+	      premix_last_buffer[i] = -65535;
+	    else if (premix_last_buffer[i] > 65535)
+	      premix_last_buffer[i] = 65535;
+
+	    /* shift to 16 bit value */
+	    premix_last_buffer[i] >>= 1;
+
+	    if (afmt.format & AUDIO_FORMAT_U8)
+	    {
+	      playing_buffer[i] = (premix_last_buffer[i] >> 8) ^ 0x80;
+	    }
+	    else if (afmt.format & AUDIO_FORMAT_LE)	/* 16 bit */
+	    {
+	      playing_buffer[2 * i + 0] = premix_last_buffer[i] & 0xff;
+	      playing_buffer[2 * i + 1] = premix_last_buffer[i] >> 8;
+	    }
+	    else					/* big endian */
+	    {
+	      playing_buffer[2 * i + 0] = premix_last_buffer[i] >> 8;
+	      playing_buffer[2 * i + 1] = premix_last_buffer[i] & 0xff;
+	    }
 	  }
 
 	  /* finally play the sound fragment */
@@ -478,7 +598,7 @@ void SoundServer(void)
 
 #else /* !AUDIO_STREAMING_DSP */
 
-    if (snd_ctrl.active && !snd_ctrl.loop)
+    if (snd_ctrl.active && !IS_LOOP(snd_ctrl))
     {
       struct timeval delay = { 0, 0 };
       byte *sample_ptr;
@@ -544,7 +664,7 @@ static void sound_handler(struct SoundControl snd_ctrl)
     if (!playing_sounds)
       return;
 
-    for (i=0; i<MAX_SOUNDS_PLAYING; i++)
+    for (i=0; i<NUM_MIXER_CHANNELS; i++)
       if ((snd_ctrl.stop_all_sounds ||
 	   (i != audio.music_channel && playlist[i].nr == snd_ctrl.nr) ||
 	   (i == audio.music_channel && snd_ctrl.music)) &&
@@ -553,7 +673,7 @@ static void sound_handler(struct SoundControl snd_ctrl)
 	playlist[i].fade_sound = TRUE;
 	if (voice_check(playlist[i].voice))
 	  voice_ramp_volume(playlist[i].voice, 1000, 0);
-	playlist[i].loop = PSND_NO_LOOP;
+	playlist[i].state &= ~SND_CTRL_IS_LOOP;
       }
   }
   else if (snd_ctrl.stop_all_sounds)
@@ -569,7 +689,7 @@ static void sound_handler(struct SoundControl snd_ctrl)
     SoundServer_StopSound(snd_ctrl);
   }
 
-  for (i=0; i<MAX_SOUNDS_PLAYING; i++)
+  for (i=0; i<NUM_MIXER_CHANNELS; i++)
   {
     if (!playlist[i].active || playlist[i].loop)
       continue;
@@ -589,20 +709,65 @@ static void sound_handler(struct SoundControl snd_ctrl)
 }
 #endif /* PLATFORM_MSDOS */
 
+#if 0
+#if defined(TARGET_SDL)
+static void sound_handler_SDL(struct SoundControl snd_ctrl)
+{
+  /* copy sound_handler() here ... */
+}
+#endif /* TARGET_SDL */
+#endif
+
 #if !defined(PLATFORM_WIN32)
 static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
 {
+  SoundInfo *snd_info;
   int i, k;
 
-  if (snd_ctrl.music)
+#if 0
+  printf("NEW SOUND %d HAS ARRIVED [%d]\n", snd_ctrl.nr, num_sounds);
+#endif
+
+  if (IS_MUSIC(snd_ctrl))
     snd_ctrl.nr = snd_ctrl.nr % num_music;
+  else if (snd_ctrl.nr >= num_sounds)
+    return;
+
+  snd_info = (IS_MUSIC(snd_ctrl) ? Music[snd_ctrl.nr] : Sound[snd_ctrl.nr]);
+  if (snd_info == NULL)
+  {
+#if 0
+    printf("sound/music %d undefined\n", snd_ctrl.nr);
+#endif
+    return;
+  }
+
+#if 0
+  printf("-> %d\n", playing_sounds);
+#endif
+
+  if (playing_sounds == NUM_MIXER_CHANNELS)
+  {
+    for (i=0; i<NUM_MIXER_CHANNELS; i++)
+    {
+      if (playlist[i].data_ptr == NULL)
+      {
+#if 1
+	printf("THIS SHOULD NEVER HAPPEN! [%d]\n", i);
+#endif
+
+	playlist[i] = emptySoundControl;
+	playing_sounds--;
+      }
+    }
+  }
 
   /* if playlist is full, remove oldest sound */
-  if (playing_sounds == MAX_SOUNDS_PLAYING)
+  if (playing_sounds == NUM_MIXER_CHANNELS)
   {
     int longest = 0, longest_nr = 0;
 
-    for (i=0; i<MAX_SOUNDS_PLAYING; i++)
+    for (i=FIRST_SOUND_CHANNEL; i<NUM_MIXER_CHANNELS; i++)
     {
 #if !defined(PLATFORM_MSDOS)
       int actual = 100 * playlist[i].playingpos / playlist[i].data_len;
@@ -610,7 +775,7 @@ static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
       int actual = playlist[i].playingpos;
 #endif
 
-      if (i != audio.music_channel && !playlist[i].loop && actual > longest)
+      if (!IS_LOOP(playlist[i]) && actual > longest)
       {
 	longest = actual;
 	longest_nr = i;
@@ -625,22 +790,21 @@ static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
   }
 
   /* check if sound is already being played (and how often) */
-  for (k=0,i=0; i<MAX_SOUNDS_PLAYING; i++)
-    if (i != audio.music_channel && playlist[i].nr == snd_ctrl.nr)
+  for (k=0, i=FIRST_SOUND_CHANNEL; i<NUM_MIXER_CHANNELS; i++)
+    if (playlist[i].nr == snd_ctrl.nr)
       k++;
 
   /* restart loop sounds only if they are just fading out */
-  if (k >= 1 && snd_ctrl.loop)
+  if (k >= 1 && IS_LOOP(snd_ctrl))
   {
-    for(i=0; i<MAX_SOUNDS_PLAYING; i++)
+    for(i=FIRST_SOUND_CHANNEL; i<NUM_MIXER_CHANNELS; i++)
     {
-      if (i != audio.music_channel && playlist[i].nr == snd_ctrl.nr &&
-	  playlist[i].fade_sound)
+      if (playlist[i].nr == snd_ctrl.nr && IS_FADING(playlist[i]))
       {
-	playlist[i].fade_sound = FALSE;
+	playlist[i].state &= ~SND_CTRL_FADE;
 	playlist[i].volume = PSND_MAX_VOLUME;
 #if defined(PLATFORM_MSDOS)
-        playlist[i].loop = PSND_LOOP;
+        playlist[i].state |= SND_CTRL_LOOP;
         voice_stop_volumeramp(playlist[i].voice);
         voice_ramp_volume(playlist[i].voice, playlist[i].volume, 1000);
 #endif
@@ -656,13 +820,11 @@ static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
     int longest = 0, longest_nr = 0;
 
     /* look for oldest equal sound */
-    for(i=0; i<MAX_SOUNDS_PLAYING; i++)
+    for(i=FIRST_SOUND_CHANNEL; i<NUM_MIXER_CHANNELS; i++)
     {
       int actual;
 
-      if (!playlist[i].active ||
-	  i == audio.music_channel ||
-	  playlist[i].nr != snd_ctrl.nr)
+      if (!playlist[i].active || playlist[i].nr != snd_ctrl.nr)
 	continue;
 
 #if !defined(PLATFORM_MSDOS)
@@ -686,20 +848,49 @@ static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
   }
 
   /* add new sound to playlist */
-  for(i=0; i<MAX_SOUNDS_PLAYING; i++)
+  for(i=0; i<NUM_MIXER_CHANNELS; i++)
   {
+#if 0
+    printf("CHECKING CHANNEL %d FOR SOUND %d ...\n", i, snd_ctrl.nr);
+#endif
+
+    /*
     if (!playlist[i].active ||
-	(snd_ctrl.music && i == audio.music_channel))
+	(IS_MUSIC(snd_ctrl) && i == MUSIC_CHANNEL))
+    */
+    if ((i == MUSIC_CHANNEL && IS_MUSIC(snd_ctrl)) ||
+	(i != MUSIC_CHANNEL && !playlist[i].active))
     {
-      SoundInfo *snd_info =
-	(snd_ctrl.music ? Music[snd_ctrl.nr] : Sound[snd_ctrl.nr]);
-
       snd_ctrl.data_ptr = snd_info->data_ptr;
       snd_ctrl.data_len = snd_info->data_len;
+      snd_ctrl.format   = snd_info->format;
+
+#if 1
+      if (snd_info->data_len == 0)
+      {
+	printf("THIS SHOULD NEVER HAPPEN! [snd_info->data_len == 0]\n");
+      }
+#endif
+
+#if 1
+      if (IS_MUSIC(snd_ctrl) && i == MUSIC_CHANNEL && playlist[i].active)
+      {
+	printf("THIS SHOULD NEVER HAPPEN! [adding music twice]\n");
+
+#if 1
+	playlist[i] = emptySoundControl;
+	playing_sounds--;
+#endif
+      }
+#endif
 
       playlist[i] = snd_ctrl;
       playing_sounds++;
 
+#if 0
+      printf("NEW SOUND %d ADDED TO PLAYLIST\n", snd_ctrl.nr);
+#endif
+
 #if defined(PLATFORM_MSDOS)
       playlist[i].voice = allocate_voice((SAMPLE *)playlist[i].data_ptr);
 
@@ -724,7 +915,7 @@ void SoundServer_FadeSound(int nr)
   if (!playing_sounds)
     return;
 
-  for(i=0;i<MAX_SOUNDS_PLAYING;i++)
+  for(i=0;i<NUM_MIXER_CHANNELS;i++)
     if (snd_ctrl.stop_all_sounds || playlist[i].nr == snd_ctrl.nr)
       playlist[i].fade_sound = TRUE;
 }
@@ -740,7 +931,7 @@ static void SoundServer_StopSound(struct SoundControl snd_ctrl)
   if (!playing_sounds)
     return;
 
-  for(i=0; i<MAX_SOUNDS_PLAYING; i++)
+  for(i=0; i<NUM_MIXER_CHANNELS; i++)
   {
     if ((i == audio.music_channel && snd_ctrl.music) ||
 	(i != audio.music_channel && playlist[i].nr == nr))
@@ -764,13 +955,13 @@ static void SoundServer_StopAllSounds()
 {
   int i;
 
-  for(i=0;i<MAX_SOUNDS_PLAYING;i++)
+  for(i=0; i<NUM_MIXER_CHANNELS; i++)
   {
 #if defined(PLATFORM_MSDOS)
     voice_set_volume(playlist[i].voice, 0);
     deallocate_voice(playlist[i].voice);
 #endif
-    playlist[i]=emptySoundControl;
+    playlist[i] = emptySoundControl;
   }
   playing_sounds = 0;
 
@@ -787,16 +978,31 @@ static void SoundServer_StopAllSounds()
 /* ------------------------------------------------------------------------- */
 
 #if defined(AUDIO_LINUX_IOCTL)
-static boolean InitAudioDevice_Linux(long fragment_size, int sample_rate)
+static void InitAudioDevice_Linux(struct AudioFormatInfo *afmt)
 {
   /* "ioctl()" expects pointer to 'int' value for stereo flag
      (boolean is defined as 'char', which will not work here) */
+  unsigned int fragment_spec = 0;
+  int fragment_size_query;
   int stereo = TRUE;
-  unsigned long fragment_spec = 0;
+  struct
+  {
+    int format_ioctl;
+    int format_result;
+  }
+  formats[] =
+  {
+    /* supported audio format in preferred order */
+    { AFMT_S16_LE,	AUDIO_FORMAT_S16 | AUDIO_FORMAT_LE },
+    { AFMT_S16_BE,	AUDIO_FORMAT_S16 | AUDIO_FORMAT_BE },
+    { AFMT_U8,		AUDIO_FORMAT_U8                    },
+    { -1,		-1 }
+  };
+  int i;
 
   /* determine logarithm (log2) of the fragment size */
-  for (fragment_spec=0; (1 << fragment_spec) < fragment_size;
-       fragment_spec++);
+  while ((1 << fragment_spec) < afmt->fragment_size)
+    fragment_spec++;
 
   /* use two fragments (play one fragment, prepare the other);
      one fragment would result in interrupted audio output, more
@@ -812,36 +1018,43 @@ static boolean InitAudioDevice_Linux(long fragment_size, int sample_rate)
     Error(ERR_EXIT_SOUND_SERVER,
 	  "cannot set fragment size of /dev/dsp -- no sounds");
 
-  /* try if we can use stereo sound */
-  if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0)
+  i = 0;
+  afmt->format = 0;
+  while (formats[i].format_result != -1)
   {
-#ifdef DEBUG
-    static boolean reported = FALSE;
-
-    if (!reported)
+    unsigned int audio_format = formats[i].format_ioctl;
+    if (ioctl(audio.device_fd, SNDCTL_DSP_SETFMT, &audio_format) == 0)
     {
-      Error(ERR_RETURN, "cannot get stereo sound on /dev/dsp");
-      reported = TRUE;
+      afmt->format = formats[i].format_result;
+      break;
     }
-#endif
-    stereo = FALSE;
   }
 
-  if (ioctl(audio.device_fd, SNDCTL_DSP_SPEED, &sample_rate) < 0)
+  if (afmt->format == 0)	/* no supported audio format found */
+    Error(ERR_EXIT_SOUND_SERVER,
+	  "cannot set audio format of /dev/dsp -- no sounds");
+
+  /* try if we can use stereo sound */
+  afmt->stereo = TRUE;
+  if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0)
+    afmt->stereo = FALSE;
+
+  if (ioctl(audio.device_fd, SNDCTL_DSP_SPEED, &afmt->sample_rate) < 0)
     Error(ERR_EXIT_SOUND_SERVER,
 	  "cannot set sample rate of /dev/dsp -- no sounds");
 
   /* get the real fragmentation size; this should return 512 */
-  if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size) < 0)
+  if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size_query) < 0)
     Error(ERR_EXIT_SOUND_SERVER,
 	  "cannot get fragment size of /dev/dsp -- no sounds");
-
-  return (boolean)stereo;
+  if (fragment_size_query != afmt->fragment_size)
+    Error(ERR_EXIT_SOUND_SERVER,
+	  "cannot set fragment size of /dev/dsp -- no sounds");
 }
 #endif	/* AUDIO_LINUX_IOCTL */
 
 #if defined(PLATFORM_NETBSD)
-static boolean InitAudioDevice_NetBSD(long fragment_size, int sample_rate)
+static void InitAudioDevice_NetBSD(struct AudioFormatInfo *afmt)
 {
   audio_info_t a_info;
   boolean stereo = TRUE;
@@ -853,23 +1066,25 @@ static boolean InitAudioDevice_NetBSD(long fragment_size, int sample_rate)
   a_info.play.sample_rate = sample_rate;
   a_info.blocksize = fragment_size;
 
+  afmt->format = AUDIO_FORMAT_U8;
+  afmt->stereo = TRUE;
+
   if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0)
   {
     /* try to disable stereo */
     a_info.play.channels = 1;
-    stereo = FALSE;
+
+    afmt->stereo = FALSE;
 
     if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0)
       Error(ERR_EXIT_SOUND_SERVER,
 	    "cannot set sample rate of /dev/audio -- no sounds");
   }
-
-  return stereo;
 }
 #endif /* PLATFORM_NETBSD */
 
 #if defined(PLATFORM_HPUX)
-static boolean InitAudioDevice_HPUX()
+static void InitAudioDevice_HPUX(struct AudioFormatInfo *afmt)
 {
   struct audio_describe ainfo;
   int audio_ctl;
@@ -887,12 +1102,27 @@ static boolean InitAudioDevice_HPUX()
   ioctl(audio_ctl, AUDIO_SET_CHANNELS, 1);
   ioctl(audio_ctl, AUDIO_SET_SAMPLE_RATE, 8000);
 
-  close(audio_ctl);
+  afmt->format = AUDIO_FORMAT_U8;
+  afmt->stereo = FALSE;
+  afmt->sample_rate = 8000;
 
-  return TRUE;	/* to provide common interface for InitAudioDevice_...() */
+  close(audio_ctl);
 }
 #endif /* PLATFORM_HPUX */
 
+#if defined(PLATFORM_UNIX)
+static void InitAudioDevice_DSP(struct AudioFormatInfo *afmt)
+{
+#if defined(AUDIO_LINUX_IOCTL)
+  InitAudioDevice_Linux(afmt);
+#elif defined(PLATFORM_NETBSD)
+  InitAudioDevice_NetBSD(afmt);
+#elif defined(PLATFORM_HPUX)
+  InitAudioDevice_HPUX(afmt);
+#endif
+}
+#endif /* PLATFORM_UNIX */
+
 #if defined(PLATFORM_UNIX) && !defined(AUDIO_STREAMING_DSP)
 
 /* these two are stolen from "sox"... :) */
@@ -1022,6 +1252,10 @@ static SoundInfo *Load_WAV(char *filename)
   if (!audio.sound_available)
     return NULL;
 
+#if 0
+  printf("loading WAV file '%s'\n", filename);
+#endif
+
   snd_info = checked_calloc(sizeof(SoundInfo));
 
 #if defined(TARGET_SDL)
@@ -1115,8 +1349,7 @@ static SoundInfo *Load_WAV(char *filename)
     return NULL;
   }
 
-  for (i=0; i<snd_info->data_len; i++)
-    ((byte *)snd_info->data_ptr)[i] = ((byte *)snd_info->data_ptr)[i] ^ 0x80;
+  snd_info->format = AUDIO_FORMAT_U8;
 
 #endif	/* PLATFORM_UNIX */
 
@@ -1126,22 +1359,95 @@ static SoundInfo *Load_WAV(char *filename)
   return snd_info;
 }
 
-SoundInfo *LoadCustomSound(char *basename)
+static void deleteSoundEntry(SoundInfo **snd_info)
+{
+  if (*snd_info)
+  {
+    char *filename = (*snd_info)->source_filename;
+
+#if 0
+    printf("[decrementing reference counter of sound '%s']\n", filename);
+#endif
+
+    if (--(*snd_info)->num_references <= 0)
+    {
+#if 0
+      printf("[deleting sound '%s']\n", filename);
+#endif
+
+      /*
+      FreeSound(*snd_info);
+      */
+      deleteNodeFromList(&SoundFileList, filename, FreeSound);
+    }
+
+    *snd_info = NULL;
+  }
+}
+
+static void replaceSoundEntry(SoundInfo **snd_info, char *filename)
+{
+  ListNode *node;
+
+  /* check if the old and the new sound file are the same */
+  if (*snd_info && strcmp((*snd_info)->source_filename, filename) == 0)
+  {
+    /* The old and new sound are the same (have the same filename and path).
+       This usually means that this sound does not exist in this sound set
+       and a fallback to the existing sound is done. */
+
+#if 0
+    printf("[sound '%s' already exists (same list entry)]\n", filename);
+#endif
+
+    return;
+  }
+
+  /* delete existing sound file entry */
+  deleteSoundEntry(snd_info);
+
+  /* check if the new sound file already exists in the list of sounds */
+  if ((node = getNodeFromKey(SoundFileList, filename)) != NULL)
+  {
+#if 0
+      printf("[sound '%s' already exists (other list entry)]\n", filename);
+#endif
+
+      *snd_info = (SoundInfo *)node->content;
+      (*snd_info)->num_references++;
+  }
+  else if ((*snd_info = Load_WAV(filename)) != NULL)	/* load new sound */
+  {
+    (*snd_info)->num_references = 1;
+    addNodeToList(&SoundFileList, (*snd_info)->source_filename, *snd_info);
+  }
+}
+
+static void LoadCustomSound(SoundInfo **snd_info, char *basename)
 {
   char *filename = getCustomSoundFilename(basename);
 
+  if (strcmp(basename, SND_FILE_UNDEFINED) == 0)
+  {
+    deleteSoundEntry(snd_info);
+    return;
+  }
+
   if (filename == NULL)
   {
     Error(ERR_WARN, "cannot find sound file '%s'", basename);
-    return FALSE;
+    return;
   }
 
-  return Load_WAV(filename);
+  replaceSoundEntry(snd_info, filename);
 }
 
-void InitSoundList(int num_list_entries)
+void InitSoundList(struct SoundEffectInfo *sounds_list, int num_list_entries)
 {
-  Sound = checked_calloc(num_list_entries * sizeof(SoundInfo *));
+  if (Sound == NULL)
+    Sound = checked_calloc(num_list_entries * sizeof(SoundInfo *));
+
+  sound_effect = sounds_list;
   num_sounds = num_list_entries;
 }
 
@@ -1150,10 +1456,17 @@ void LoadSoundToList(char *basename, int list_pos)
   if (Sound == NULL || list_pos >= num_sounds)
     return;
 
-  if (Sound[list_pos])
-    FreeSound(Sound[list_pos]);
+#if 0
+  printf("loading sound '%s' ...  [%d]\n",
+	 basename, getNumNodes(SoundFileList));
+#endif
+
+  LoadCustomSound(&Sound[list_pos], basename);
 
-  Sound[list_pos] = LoadCustomSound(basename);
+#if 0
+  printf("loading sound '%s' done [%d]\n",
+	 basename, getNumNodes(SoundFileList));
+#endif
 }
 
 static MusicInfo *Load_MOD(char *filename)
@@ -1255,25 +1568,25 @@ void PlayMusic(int nr)
 
 void PlaySound(int nr)
 {
-  PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, PSND_NO_LOOP);
+  PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, SND_CTRL_PLAY_SOUND);
 }
 
 void PlaySoundStereo(int nr, int stereo)
 {
-  PlaySoundExt(nr, PSND_MAX_VOLUME, stereo, PSND_NO_LOOP);
+  PlaySoundExt(nr, PSND_MAX_VOLUME, stereo, SND_CTRL_PLAY_SOUND);
 }
 
 void PlaySoundLoop(int nr)
 {
-  PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, PSND_LOOP);
+  PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, SND_CTRL_PLAY_LOOP);
 }
 
 void PlaySoundMusic(int nr)
 {
-  PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, PSND_MUSIC);
+  PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, SND_CTRL_PLAY_MUSIC);
 }
 
-void PlaySoundExt(int nr, int volume, int stereo, boolean loop_type)
+void PlaySoundExt(int nr, int volume, int stereo, int state)
 {
   struct SoundControl snd_ctrl = emptySoundControl;
 
@@ -1292,21 +1605,18 @@ void PlaySoundExt(int nr, int volume, int stereo, boolean loop_type)
   else if (stereo > PSND_MAX_RIGHT)
     stereo = PSND_MAX_RIGHT;
 
-  snd_ctrl.nr		= nr;
-  snd_ctrl.volume	= volume;
-  snd_ctrl.stereo	= stereo;
-  snd_ctrl.loop		= (loop_type != PSND_NO_LOOP);
-  snd_ctrl.music	= (loop_type == PSND_MUSIC);
-  snd_ctrl.active	= TRUE;
-
-#if 0
-  snd_ctrl.data_ptr	= Sound[nr].data_ptr;
-  snd_ctrl.data_len	= Sound[nr].data_len;
-#endif
+  snd_ctrl.active = TRUE;
+  snd_ctrl.nr     = nr;
+  snd_ctrl.volume = volume;
+  snd_ctrl.stereo = stereo;
+  snd_ctrl.state  = state;
 
 #if defined(TARGET_SDL)
-  Mix_Volume(-1, SOUND_MAX_VOLUME);
-  Mix_PlayChannel(-1, Sound[nr]->data_ptr, (loop_type ? -1 : 0));
+  if (Sound[nr])
+  {
+    Mix_Volume(-1, SOUND_MAX_VOLUME);
+    Mix_PlayChannel(-1, Sound[nr]->data_ptr, (state & SND_CTRL_LOOP ? -1 : 0));
+  }
 #elif defined(PLATFORM_UNIX)
   if (audio.soundserver_pid == 0)	/* we are child process */
     return;
@@ -1331,19 +1641,19 @@ void FadeMusic(void)
   Mix_FadeOutMusic(SOUND_FADING_INTERVAL);
   Mix_FadeOutChannel(audio.music_channel, SOUND_FADING_INTERVAL);
 #else
-  StopSoundExt(-1, SSND_FADE_MUSIC);
+  StopSoundExt(-1, SND_CTRL_FADE_MUSIC);
 #endif
 }
 
 void FadeSound(int nr)
 {
-  StopSoundExt(nr, SSND_FADE_SOUND);
+  StopSoundExt(nr, SND_CTRL_FADE_SOUND);
 }
 
 void FadeSounds()
 {
   FadeMusic();
-  StopSoundExt(-1, SSND_FADE_ALL);
+  StopSoundExt(-1, SND_CTRL_FADE_ALL);
 }
 
 void StopMusic(void)
@@ -1355,51 +1665,41 @@ void StopMusic(void)
   Mix_HaltMusic();
   Mix_HaltChannel(audio.music_channel);
 #else
-  StopSoundExt(-1, SSND_STOP_MUSIC);
+  StopSoundExt(-1, SND_CTRL_STOP_MUSIC);
 #endif
 }
 
 void StopSound(int nr)
 {
-  StopSoundExt(nr, SSND_STOP_SOUND);
+  StopSoundExt(nr, SND_CTRL_STOP_SOUND);
 }
 
 void StopSounds()
 {
-  StopSoundExt(-1, SSND_STOP_ALL);
+  StopMusic();
+  StopSoundExt(-1, SND_CTRL_STOP_ALL);
 }
 
-void StopSoundExt(int nr, int method)
+void StopSoundExt(int nr, int state)
 {
   struct SoundControl snd_ctrl = emptySoundControl;
 
   if (!audio.sound_available)
     return;
 
-  if (method & SSND_FADING)
-    snd_ctrl.fade_sound = TRUE;
-
-  if (method & SSND_ALL)
-    snd_ctrl.stop_all_sounds = TRUE;
-  else
-  {
-    snd_ctrl.stop_sound = TRUE;
-    snd_ctrl.nr = nr;
-  }
-
-  if (method & SSND_MUSIC)
-    snd_ctrl.music = TRUE;
+  snd_ctrl.nr    = nr;
+  snd_ctrl.state = state;
 
 #if defined(TARGET_SDL)
 
-  if (method & SSND_FADING)
+  if (state & SND_CTRL_FADE)
   {
     int i;
 
     for (i=0; i<audio.channels; i++)
       if (i != audio.music_channel || snd_ctrl.music)
 	Mix_FadeOutChannel(i, SOUND_FADING_INTERVAL);
-    if (snd_ctrl.music)
+    if (state & SND_CTRL_MUSIC)
       Mix_FadeOutMusic(SOUND_FADING_INTERVAL);
   }
   else
@@ -1409,7 +1709,7 @@ void StopSoundExt(int nr, int method)
     for (i=0; i<audio.channels; i++)
       if (i != audio.music_channel || snd_ctrl.music)
 	Mix_HaltChannel(i);
-    if (snd_ctrl.music)
+    if (state & SND_CTRL_MUSIC)
       Mix_HaltMusic();
   }
 
@@ -1424,30 +1724,183 @@ void StopSoundExt(int nr, int method)
     audio.sound_available = audio.sound_enabled = FALSE;
     return;
   }
-#else
+#else /* PLATFORM_MSDOS */
   sound_handler(snd_ctrl);
 #endif
 }
 
+ListNode *newListNode()
+{
+  return checked_calloc(sizeof(ListNode));
+}
+
+void addNodeToList(ListNode **node_first, char *key, void *content)
+{
+  ListNode *node_new = newListNode();
+
+#if 0
+  printf("LIST: adding node with key '%s'\n", key);
+#endif
+
+  node_new->key = getStringCopy(key);
+  node_new->content = content;
+  node_new->next = *node_first;
+  *node_first = node_new;
+}
+
+void deleteNodeFromList(ListNode **node_first, char *key,
+			void (*destructor_function)(void *))
+{
+  if (node_first == NULL || *node_first == NULL)
+    return;
+
+#if 0
+  printf("[CHECKING LIST KEY '%s' == '%s']\n",
+	 (*node_first)->key, key);
+#endif
+
+  if (strcmp((*node_first)->key, key) == 0)
+  {
+#if 0
+    printf("[DELETING LIST ENTRY]\n");
+#endif
+
+    free((*node_first)->key);
+    if (destructor_function)
+      destructor_function((*node_first)->content);
+    *node_first = (*node_first)->next;
+  }
+  else
+    deleteNodeFromList(&(*node_first)->next, key, destructor_function);
+}
+
+ListNode *getNodeFromKey(ListNode *node_first, char *key)
+{
+  if (node_first == NULL)
+    return NULL;
+
+  if (strcmp(node_first->key, key) == 0)
+    return node_first;
+  else
+    return getNodeFromKey(node_first->next, key);
+}
+
+int getNumNodes(ListNode *node_first)
+{
+  return (node_first ? 1 + getNumNodes(node_first->next) : 0);
+}
+
+void dumpList(ListNode *node_first)
+{
+  ListNode *node = node_first;
+
+  while (node)
+  {
+    printf("['%s' (%d)]\n", node->key,
+	   ((SoundInfo *)node->content)->num_references);
+    node = node->next;
+  }
+
+  printf("[%d nodes]\n", getNumNodes(node_first));
+}
+
+static void LoadSoundsInfo()
+{
+  char *filename = getCustomSoundConfigFilename();
+  struct SetupFileList *setup_file_list;
+  int i;
+
+  /* always start with reliable default values */
+  for (i=0; i<num_sounds; i++)
+    sound_effect[i].filename = NULL;
+
+  if (filename == NULL)
+    return;
+
+  if ((setup_file_list = loadSetupFileList(filename)))
+  {
+    for (i=0; i<num_sounds; i++)
+      sound_effect[i].filename =
+	getStringCopy(getTokenValue(setup_file_list, sound_effect[i].text));
+
+    freeSetupFileList(setup_file_list);
+
+#if 1
+    for (i=0; i<num_sounds; i++)
+    {
+      printf("'%s' ", sound_effect[i].text);
+      if (sound_effect[i].filename)
+	printf("-> '%s'\n", sound_effect[i].filename);
+      else
+	printf("-> UNDEFINED [-> '%s']\n", sound_effect[i].default_filename);
+    }
+#endif
+  }
+}
+
+static void ReloadCustomSounds()
+{
+  int i;
+
+#if 0
+  printf("DEBUG: reloading sounds '%s' ...\n", artwork.sounds_set_current);
+#endif
+
+  LoadSoundsInfo();
+
+#if 0
+  printf("DEBUG: reloading %d sounds ...\n", num_sounds);
+#endif
+
+  for(i=0; i<num_sounds; i++)
+  {
+    if (sound_effect[i].filename)
+      LoadSoundToList(sound_effect[i].filename, i);
+    else
+      LoadSoundToList(sound_effect[i].default_filename, i);
+  }
+
+  /*
+  printf("list size == %d\n", getNumNodes(SoundFileList));
+  */
+
+#if 0
+  dumpList(SoundFileList);
+#endif
+}
+
+static void ReloadCustomMusic()
+{
+#if 0
+  printf("DEBUG: reloading music '%s' ...\n", artwork.music_set_current);
+#endif
+
+  FreeAllMusic();
+
+  LoadCustomMusic();
+}
+
 static void InitReloadSoundsOrMusic(char *set_name, int type)
 {
+#if 0
 #if defined(PLATFORM_UNIX) && !defined(TARGET_SDL)
   struct SoundControl snd_ctrl = emptySoundControl;
-  TreeInfo *ti =
-    (type == SND_RELOAD_SOUNDS ? artwork.snd_current : artwork.mus_current);
+  TreeInfo *ti = (state == SND_CTRL_RELOAD_SOUNDS ? artwork.snd_current :
+		  artwork.mus_current);
   unsigned long str_size1 = strlen(leveldir_current->fullpath) + 1;
   unsigned long str_size2 = strlen(ti->basepath) + 1;
   unsigned long str_size3 = strlen(ti->fullpath) + 1;
+#endif
 #endif
 
   if (!audio.sound_available)
     return;
 
 #if defined(TARGET_SDL) || defined(TARGET_ALLEGRO)
-  if (type == SND_RELOAD_SOUNDS)
-    audio.func_reload_sounds();
+  if (type == SND_CTRL_RELOAD_SOUNDS)
+    ReloadCustomSounds();
   else
-    audio.func_reload_music();
+    ReloadCustomMusic();
 #elif defined(PLATFORM_UNIX)
   if (audio.soundserver_pid == 0)	/* we are child process */
     return;
@@ -1455,8 +1908,11 @@ static void InitReloadSoundsOrMusic(char *set_name, int type)
   if (leveldir_current == NULL)		/* should never happen */
     Error(ERR_EXIT, "leveldir_current == NULL");
 
-  snd_ctrl.reload_sounds = (type == SND_RELOAD_SOUNDS);
-  snd_ctrl.reload_music  = (type == SND_RELOAD_MUSIC);
+#if 1
+  WriteReloadInfoToPipe(set_name, type);
+#else
+
+  snd_ctrl.state = type;
   snd_ctrl.data_len = strlen(set_name) + 1;
 
   if (write(audio.soundserver_pipe[1], &snd_ctrl,
@@ -1485,20 +1941,24 @@ static void InitReloadSoundsOrMusic(char *set_name, int type)
     return;
   }
 #endif
+
+#endif
 }
 
 void InitReloadSounds(char *set_name)
 {
-  InitReloadSoundsOrMusic(set_name, SND_RELOAD_SOUNDS);
+  InitReloadSoundsOrMusic(set_name, SND_CTRL_RELOAD_SOUNDS);
 }
 
 void InitReloadMusic(char *set_name)
 {
-  InitReloadSoundsOrMusic(set_name, SND_RELOAD_MUSIC);
+  InitReloadSoundsOrMusic(set_name, SND_CTRL_RELOAD_MUSIC);
 }
 
-void FreeSound(SoundInfo *sound)
+void FreeSound(void *ptr)
 {
+  SoundInfo *sound = (SoundInfo *)ptr;
+
   if (sound == NULL)
     return;
 
@@ -1513,6 +1973,9 @@ void FreeSound(SoundInfo *sound)
 #endif
   }
 
+  if (sound->source_filename)
+    free(sound->source_filename);
+
   free(sound);
 }
 
@@ -1545,8 +2008,17 @@ void FreeAllSounds()
   if (Sound == NULL)
     return;
 
+  printf("%s: FREEING SOUNDS ...\n",
+	 audio.soundserver_pid == 0 ? "CHILD" : "PARENT");
+
   for(i=0; i<num_sounds; i++)
+    deleteSoundEntry(&Sound[i]);
+  /*
     FreeSound(Sound[i]);
+  */
+
+  printf("%s: FREEING SOUNDS -- DONE\n",
+	 audio.soundserver_pid == 0 ? "CHILD" : "PARENT");
 
   free(Sound);