avcodec/mpegvideo: check that the context is initialized in ff_mpv_common_frame_size_...
authorMichael Niedermayer <michaelni@gmx.at>
Sun, 7 Sep 2014 11:00:47 +0000 (13:00 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Sun, 7 Sep 2014 13:33:06 +0000 (15:33 +0200)
The function otherwise would initialize the context without setting context_initialized
alternatively we could set context_initialized

Fixes valgrind anomalies related to ticket 3928

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 0d0f7f0ba43f64312ae4a05d97afecf1b7b1330c)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavcodec/mpegvideo.c

index 11e5467..5dab8d8 100644 (file)
@@ -1086,6 +1086,9 @@ int ff_MPV_common_frame_size_change(MpegEncContext *s)
 {
     int i, err = 0;
 
+    if (!s->context_initialized)
+        return AVERROR(EINVAL);
+
     if (s->slice_context_count > 1) {
         for (i = 0; i < s->slice_context_count; i++) {
             free_duplicate_context(s->thread_context[i]);