[Ffmpeg-cvslog] r7788 - trunk/libavcodec/lzo.c

[reimar]

Author: reimar
Date: Wed Jan 31 22:20:31 2007
New Revision: 7788

Modified:
   trunk/libavcodec/lzo.c

Log:
Make sure we do not accidentially "fix" cnt to something < 0


Modified: trunk/libavcodec/lzo.c
==============================================================================
--- trunk/libavcodec/lzo.c	(original)
+++ trunk/libavcodec/lzo.c	Wed Jan 31 22:20:31 2007
@@ -87,11 +87,11 @@
     register uint8_t *src = c->in;
     register uint8_t *dst = c->out;
     if (cnt > c->in_end - src) {
-        cnt = c->in_end - src;
+        cnt = FFMAX(c->in_end - src, 0);
         c->error |= LZO_INPUT_DEPLETED;
     }
     if (cnt > c->out_end - dst) {
-        cnt = c->out_end - dst;
+        cnt = FFMAX(c->out_end - dst, 0);
         c->error |= LZO_OUTPUT_FULL;
     }
 #if defined(INBUF_PADDED) && defined(OUTBUF_PADDED)
@@ -122,7 +122,7 @@
         return;
     }
     if (cnt > c->out_end - dst) {
-        cnt = c->out_end - dst;
+        cnt = FFMAX(c->out_end - dst, 0);
         c->error |= LZO_OUTPUT_FULL;
     }
     if (back == 1) {