[FFmpeg-cvslog] r26293 - trunk/libavcodec/roqvideo.c

[cehoyos]

Author: cehoyos
Date: Mon Jan 10 11:28:06 2011
New Revision: 26293

Log:
Check for invalid motion vector, fixes issue 2521.

Patch by Daniel Kang, daniel.d.kang at gmail

Modified:
   trunk/libavcodec/roqvideo.c

Modified: trunk/libavcodec/roqvideo.c
==============================================================================
--- trunk/libavcodec/roqvideo.c	Mon Jan 10 01:42:57 2011	(r26292)
+++ trunk/libavcodec/roqvideo.c	Mon Jan 10 11:28:06 2011	(r26293)
@@ -115,6 +115,11 @@ static inline void apply_motion_generic(
         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];