[xiph-commits] r16404 - branches/theora-thusnelda/examples

[gmaxwell at svn.xiph.org]

Author: gmaxwell
Date: 2009-08-03 12:44:16 -0700 (Mon, 03 Aug 2009)
New Revision: 16404

Modified:
   branches/theora-thusnelda/examples/dump_video.c
Log:
Make dump_video do a little more input sanity checking to make it more useful for fuzz testing.

Modified: branches/theora-thusnelda/examples/dump_video.c
===================================================================
--- branches/theora-thusnelda/examples/dump_video.c	2009-08-03 04:50:27 UTC (rev 16403)
+++ branches/theora-thusnelda/examples/dump_video.c	2009-08-03 19:44:16 UTC (rev 16404)
@@ -286,6 +286,7 @@
     int ret=buffer_data(infile,&oy);
     if(ret==0)break;
     while(ogg_sync_pageout(&oy,&og)>0){
+      int got_packet;
       ogg_stream_state test;
 
       /* is this a mandated initial header? If not, stop parsing */
@@ -298,10 +299,10 @@
 
       ogg_stream_init(&test,ogg_page_serialno(&og));
       ogg_stream_pagein(&test,&og);
-      ogg_stream_packetpeek(&test,&op);
+      got_packet = ogg_stream_packetpeek(&test,&op);
 
       /* identify the codec: try theora */
-      if(!theora_p && (theora_processing_headers=
+      if((got_packet==1) && !theora_p && (theora_processing_headers=
        th_decode_headerin(&ti,&tc,&ts,&op))>=0){
         /* it is theora -- save this stream state */
         memcpy(&to,&test,sizeof(test));