optimization when using peek as a packet detector

git-svn-id: http://svn.xiph.org/trunk/ogg@1455 0101bb08-14d6-0310-b084-bc0e0c8e3800

1 files changed, 5 insertions, 1 deletions

diff --git a/src/framing.c b/src/framing.c
index 128c98e..e608b9f 100644
--- a/src/framing.c
+++ b/src/framing.c
@@ -12,7 +12,7 @@
 
  function: code raw [Vorbis] packets into framed OggSquish stream and
            decode Ogg streams back into raw packets
- last mod: $Id: framing.c,v 1.13 2001/05/24 05:17:14 xiphmont Exp $
+ last mod: $Id: framing.c,v 1.14 2001/05/24 21:22:52 xiphmont Exp $
 
  note: The CRC code is directly derived from public domain code by
  Ross Williams (ross@guest.adelaide.edu.au).  See docs/framing.html
@@ -784,6 +784,10 @@ static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){
     return(-1);
   }
 
+  if(!op && !adv)return(1); /* just using peek as an inexpensive way
+                               to ask if there's a whole packet
+                               waiting */
+
   /* Gather the whole packet. We'll have no holes or a partial packet */
   {
     int size=os->lacing_vals[ptr]&0xff;