parser: Move Doxygen documentation to the header files

[ffmpeg] / libavcodec / lzw.c

diff --git a/libavcodec/lzw.c b/libavcodec/lzw.c
index 6129429053d27235b6ba218089b52605014db623..2c99014c2a9fe574fda5811b01f9d07cb111a497 100644 (file)
--- a/libavcodec/lzw.c
+++ b/libavcodec/lzw.c
@@ -24,11 +24,12 @@
  * @file
  * @brief LZW decoding routines
  * @author Fabrice Bellard
- * Modified for use in TIFF by Konstantin Shishkov
+ * @author modified for use in TIFF by Konstantin Shishkov
  */
 
 #include "avcodec.h"
 #include "lzw.h"
+#include "libavutil/mem.h"
 
 #define LZW_MAXBITS                 12
 #define LZW_SIZTABLE                (1<<LZW_MAXBITS)
@@ -101,9 +102,14 @@ void ff_lzw_decode_tail(LZWState *p)
     struct LZWState *s = (struct LZWState *)p;
 
     if(s->mode == FF_LZW_GIF) {
-        while(s->pbuf < s->ebuf && s->bs>0){
-            s->pbuf += s->bs;
-            s->bs = *s->pbuf++;
+        while (s->bs > 0) {
+            if (s->bs >= s->ebuf - s->pbuf) {
+                s->pbuf = s->ebuf;
+                break;
+            } else {
+                s->pbuf += s->bs;
+                s->bs = *s->pbuf++;
+            }
         }
     }else
         s->pbuf= s->ebuf;