1 files changed, 8 insertions, 7 deletions

diff --git a/libavformat/tta.c b/libavformat/tta.c
index 37a359bf70..af9476ecc0 100644
--- a/libavformat/tta.c
+++ b/libavformat/tta.c
@@ -2,20 +2,20 @@
  * TTA demuxer
  * Copyright (c) 2006 Alex Beregszaszi
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -73,8 +73,8 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
     c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
     c->currentframe = 0;
 
-    if(c->totalframes >= UINT_MAX/sizeof(uint32_t)){
-        av_log(s, AV_LOG_ERROR, "totalframes too large\n");
+    if(c->totalframes >= UINT_MAX/sizeof(uint32_t) || c->totalframes <= 0){
+        av_log(s, AV_LOG_ERROR, "totalframes %d invalid\n", c->totalframes);
         return -1;
     }
 
@@ -142,9 +142,10 @@ static int tta_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp
     int index = av_index_search_timestamp(st, timestamp, flags);
     if (index < 0)
         return -1;
+    if (avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET) < 0)
+        return -1;
 
     c->currentframe = index;
-    avio_seek(s->pb, st->index_entries[index].pos, SEEK_SET);
 
     return 0;
 }