Merge remote-tracking branch 'qatar/master'

* qatar/master:
  smacker: Sanity check huffman tables found in the headers.
  smacker: remove dead store
  qdm2: Check data block size for bytes to bits overflow.
  mxfdec: Fix files with essence containers larger than 2 GiB.
  mxfdec: Employ correct printf conversion specifiers for POSIX int types.
  vc1: always read the bfraction element for interlaced fields
  fate: add XWD image regression test
  lavf: prevent infinite loops while flushing in avformat_find_stream_info
  matroskadec: Pad AAC extradata.
  ismindex: Fix build on mingw

Conflicts:
	libavformat/mxfdec.c
	libavformat/utils.c
	tests/lavf-regression.sh

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 12 insertions, 14 deletions

diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index 64884fcc50..a012967e3e 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -901,20 +901,18 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
     if (v->field_mode) {
         if (!v->refdist_flag)
             v->refdist = 0;
-        else {
-            if ((v->s.pict_type != AV_PICTURE_TYPE_B)
-                && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
-                v->refdist = get_bits(gb, 2);
-                if (v->refdist == 3)
-                    v->refdist += get_unary(gb, 0, 16);
-            } else {
-                v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
-                v->bfraction           = ff_vc1_bfraction_lut[v->bfraction_lut_index];
-                v->frfd = (v->bfraction * v->refdist) >> 8;
-                v->brfd = v->refdist - v->frfd - 1;
-                if (v->brfd < 0)
-                    v->brfd = 0;
-            }
+        else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
+            v->refdist = get_bits(gb, 2);
+            if (v->refdist == 3)
+                v->refdist += get_unary(gb, 0, 16);
+        }
+        if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
+            v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
+            v->bfraction           = ff_vc1_bfraction_lut[v->bfraction_lut_index];
+            v->frfd = (v->bfraction * v->refdist) >> 8;
+            v->brfd = v->refdist - v->frfd - 1;
+            if (v->brfd < 0)
+                v->brfd = 0;
         }
         goto parse_common_info;
     }