X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Froqvideo.c;h=77df0798db5a886870c65626b25a80f1fbc33838;hb=c32e4029d99fb1bff3df86f62a3ce61d2419aae0;hp=53d60a19eb9f18535b535fa0cf2c2ef4d6ae3123;hpb=8448946e37983a55db92bdf46614de5f9c5ceab1;p=ffmpeg

diff --git a/libavcodec/roqvideo.c b/libavcodec/roqvideo.c
index 53d60a19eb9..77df0798db5 100644
--- a/libavcodec/roqvideo.c
+++ b/libavcodec/roqvideo.c
@@ -2,26 +2,26 @@
  * Copyright (C) 2003 Mike Melanson
  * Copyright (C) 2003 Dr. Tim Ferguson
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
- * @file roqvideo.c
- * Id RoQ Video common functions based on work by Dr. Tim Ferguson
+ * @file
+ * id RoQ Video common functions based on work by Dr. Tim Ferguson
  */
 
 #include "avcodec.h"
@@ -115,6 +115,11 @@ static inline void apply_motion_generic(RoqContext *ri, int x, int y, int deltax
         return;
     }
 
+    if (ri->last_frame->data[0] == NULL) {
+        av_log(ri->avctx, AV_LOG_ERROR, "Invalid decode type. Invalid header?\n");
+        return;
+    }
+
     for(cp = 0; cp < 3; cp++) {
         int outstride = ri->current_frame->linesize[cp];
         int instride  = ri->last_frame   ->linesize[cp];