Fix _fecth_and_process_packet for non-seekable streams

svn path=/trunk/vorbis/; revision=3166

diff --git a/lib/vorbisfile.c b/lib/vorbisfile.c
index 506cf41..22b8d8b 100644 (file)
--- a/lib/vorbisfile.c
+++ b/lib/vorbisfile.c
@@ -11,7 +11,7 @@
  ********************************************************************
 
  function: stdio-based convenience library for opening/seeking/decoding
- last mod: $Id: vorbisfile.c,v 1.59 2002/03/07 03:41:03 xiphmont Exp $
+ last mod: $Id: vorbisfile.c,v 1.60 2002/03/19 17:49:59 xiphmont Exp $
 
  ********************************************************************/
 
@@ -515,8 +515,9 @@ static int _fetch_and_process_packet(OggVorbis_File *vf,
                 So, we need a previous granulepos from an in-sequence page
                 to have a reference point.  Thus the !op_ptr->e_o_s clause
                 above */
-             
-             granulepos-=vf->pcmlengths[link*2];
+
+             if(vf->seekable && link>0)
+               granulepos-=vf->pcmlengths[link*2];
              if(granulepos<0)granulepos=0; /* actually, this
                                               shouldn't be possible
                                               here unless the stream