X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fh264_sei.c;h=12d709b123502983648f254ca36b7ba58f62b9c6;hb=4b8bc6d2b0a94c850f7d807a7da21804f1f9c1c7;hp=a4867290ba2b637c28a03699f98363828cf45054;hpb=44967ab60a9baf62f86bc727b51ff0acb587e676;p=ffmpeg

diff --git a/libavcodec/h264_sei.c b/libavcodec/h264_sei.c
index a4867290ba2..12d709b1235 100644
--- a/libavcodec/h264_sei.c
+++ b/libavcodec/h264_sei.c
@@ -226,39 +226,30 @@ static int decode_buffering_period(H264Context *h)
 
 static int decode_frame_packing_arrangement(H264Context *h)
 {
-    int cancel;
-    int quincunx =  0;
-    int content  = -1;
-    int type     = -1;
-
     h->sei_fpa.frame_packing_arrangement_id          = get_ue_golomb(&h->gb);
-    cancel = get_bits(&h->gb, 1);
-    if (cancel == 0) {
-        type = get_bits(&h->gb, 7);     // frame_packing_arrangement_type
-        quincunx = get_bits1(&h->gb);   // quincunx_sampling_flag
-        content = get_bits(&h->gb, 6);  // content_interpretation_type
+    h->sei_fpa.frame_packing_arrangement_cancel_flag = get_bits1(&h->gb);
+    h->sei_frame_packing_present = !h->sei_fpa.frame_packing_arrangement_cancel_flag;
+
+    if (h->sei_frame_packing_present) {
+        h->sei_fpa.frame_packing_arrangement_type =
+        h->frame_packing_arrangement_type = get_bits(&h->gb, 7);
+        h->sei_fpa.quincunx_sampling_flag         =
+        h->quincunx_subsampling           = get_bits1(&h->gb);
+        h->sei_fpa.content_interpretation_type    =
+        h->content_interpretation_type    = get_bits(&h->gb, 6);
 
         // the following skips: spatial_flipping_flag, frame0_flipped_flag,
         // field_views_flag, current_frame_is_frame0_flag,
         // frame0_self_contained_flag, frame1_self_contained_flag
         skip_bits(&h->gb, 6);
-        if (quincunx == 0 && type != 5)
+
+        if (!h->quincunx_subsampling && h->frame_packing_arrangement_type != 5)
             skip_bits(&h->gb, 16);      // frame[01]_grid_position_[xy]
         skip_bits(&h->gb, 8);           // frame_packing_arrangement_reserved_byte
         h->sei_fpa.frame_packing_arrangement_repetition_period = get_ue_golomb(&h->gb) /* frame_packing_arrangement_repetition_period */;
     }
     skip_bits1(&h->gb);                 // frame_packing_arrangement_extension_flag
 
-    h->sei_frame_packing_present      = (cancel == 0);
-    h->frame_packing_arrangement_type = type;
-    h->content_interpretation_type    = content;
-    h->quincunx_subsampling           = quincunx;
-
-    h->sei_fpa.frame_packing_arrangement_cancel_flag = cancel  ;
-    h->sei_fpa.frame_packing_arrangement_type        = type    ;
-    h->sei_fpa.quincunx_sampling_flag                = quincunx;
-    h->sei_fpa.content_interpretation_type           = content ;
-
     if (h->avctx->debug & FF_DEBUG_PICT_INFO)
         av_log(h->avctx, AV_LOG_DEBUG, "SEI FPA %d %d %d %d %d %d\n",
                                        h->sei_fpa.frame_packing_arrangement_id,