* transcode: fix a potential segfault.

modules/stream_out/transcode.c

@@ -2,7 +2,7 @@
  * transcode.c
  *****************************************************************************
  * Copyright (C) 2001, 2002 VideoLAN
- * $Id: transcode.c,v 1.17 2003/05/22 20:45:25 hartman Exp $
+ * $Id: transcode.c,v 1.18 2003/06/25 21:47:05 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *
@@ -601,15 +601,15 @@ static int transcode_audio_ffmpeg_new   ( sout_stream_t *p_stream, sout_stream_i
     }
 
 
-    id->i_buffer_in      = AVCODEC_MAX_AUDIO_FRAME_SIZE;
+    id->i_buffer_in      = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
     id->i_buffer_in_pos = 0;
     id->p_buffer_in      = malloc( id->i_buffer_in );
 
-    id->i_buffer     = AVCODEC_MAX_AUDIO_FRAME_SIZE;
+    id->i_buffer     = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
     id->i_buffer_pos = 0;
     id->p_buffer     = malloc( id->i_buffer );
 
-    id->i_buffer_out     = AVCODEC_MAX_AUDIO_FRAME_SIZE;
+    id->i_buffer_out     = 2 * AVCODEC_MAX_AUDIO_FRAME_SIZE;
     id->i_buffer_out_pos = 0;
     id->p_buffer_out     = malloc( id->i_buffer_out );
 
@@ -635,6 +635,8 @@ static void transcode_audio_ffmpeg_close ( sout_stream_t *p_stream, sout_stream_
 static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream, sout_stream_id_t *id,
                                            sout_buffer_t *in, sout_buffer_t **out )
 {
+    vlc_bool_t b_again = VLC_FALSE;
+
     *out = NULL;
 
     /* gather data into p_buffer_in */
@@ -654,6 +656,8 @@ static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream, sout_stream_
             in->i_size );
     id->i_buffer_in_pos += in->i_size;
 
+    do
+    {
         /* decode as many data as possible */
         if( id->ff_dec )
         {
@@ -689,6 +693,13 @@ static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream, sout_stream_
                     id->i_buffer_in_pos = 0;
                     break;
                 }
+
+                if( id->i_buffer_pos >= AVCODEC_MAX_AUDIO_FRAME_SIZE )
+                {
+                    /* buffer full */
+                    b_again = VLC_TRUE;
+                    break;
+                }
             }
         }
         else
@@ -813,6 +824,8 @@ static int transcode_audio_ffmpeg_process( sout_stream_t *p_stream, sout_stream_
             sout_BufferChain( out, p_out );
         }
 
+    } while( b_again );
+
     return VLC_SUCCESS;
 }