DJ's first steps in C and vlc decoders ;)

* modules/audio_filter/converter/mpgatofixed32.c:
  - fixed an issue that could cause glitches when switching from one stream
    to another. the buffer wasn't entirely getting 0000 because multiple
    channels were not taken into account when doing this.
* ALL:
  - if float32 then clear the buffer with (float)0

modules/audio_filter/converter/mpgatofixed32.c

@@ -3,7 +3,7 @@
  * using MAD (MPEG Audio Decoder)
  *****************************************************************************
  * Copyright (C) 2001 by Jean-Paul Saman
- * $Id: mpgatofixed32.c,v 1.6 2003/02/21 15:16:52 hartman Exp $
+ * $Id: mpgatofixed32.c,v 1.7 2003/02/21 16:31:37 hartman Exp $
  *
  * Authors: Christophe Massiot <massiot@via.ecp.fr>
  *          Jean-Paul Saman <jpsaman@wxs.nl>
@@ -114,7 +114,8 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
 
 
     p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
-    p_out_buf->i_nb_bytes = p_in_buf->i_nb_samples * sizeof(vlc_fixed_t);
+    p_out_buf->i_nb_bytes = p_in_buf->i_nb_samples * sizeof(vlc_fixed_t) * 
+                               aout_FormatNbChannels( &p_filter->input );
 
     /* Do the actual decoding now. */
     mad_stream_buffer( &p_sys->mad_stream, p_in_buf->p_buffer,
@@ -123,7 +124,20 @@ static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
     {
         msg_Warn( p_aout, "libmad error: %s",
                   mad_stream_errorstr( &p_sys->mad_stream ) );
-        memset( p_out_buf->p_buffer, 0, p_out_buf->i_nb_bytes );
+        if( p_filter->output.i_format == VLC_FOURCC('f','l','3','2') )
+        {
+            int i;
+            int i_size = p_out_buf->i_nb_bytes / sizeof(float);
+            
+            float * a = (float *)p_out_buf->p_buffer;
+            for ( i = 0 ; i < i_size ; i++ )
+                *a++ = 0.0;
+        }
+        else
+        {
+            memset( p_out_buf->p_buffer, 0, p_out_buf->i_nb_bytes );
+        }
+        return;
     }
     mad_synth_frame( &p_sys->mad_synth, &p_sys->mad_frame );
 

modules/gui/macosx/aout.m

@@ -2,7 +2,7 @@
  * aout.m: CoreAudio output plugin
  *****************************************************************************
  * Copyright (C) 2002-2003 VideoLAN
- * $Id: aout.m,v 1.22 2003/01/21 00:47:43 jlj Exp $
+ * $Id: aout.m,v 1.23 2003/02/21 16:31:37 hartman Exp $
  *
  * Authors: Colin Delacroix <colin@zoy.org>
  *          Jon Lech Johansen <jon-vl@nanocrew.net>
@@ -468,8 +468,20 @@ static OSStatus IOCallback( AudioDeviceID inDevice,
     }
     else
     {
-        memset( outOutputData->mBuffers[ 0 ].mData, 
+        if( p_aout->output.output.i_format == VLC_FOURCC('f','l','3','2') )
+        {
+            int i;
+            int i_size = p_sys->i_buffer_size / sizeof(float);
+            
+            float * a = (float *)outOutputData->mBuffers[ 0 ].mData;
+            for ( i = 0 ; i < i_size ; i++ )
+                *a++ = 0.0;
+        }
+        else
+        {
+            memset( outOutputData->mBuffers[ 0 ].mData, 
                 0, p_sys->i_buffer_size );
+        }
     }
 
     return( noErr );