ff_emulated_edge_mc: fix handling of w/h being 0

[ffmpeg] / libavcodec / dxa.c

diff --git a/libavcodec/dxa.c b/libavcodec/dxa.c
index d43e1134e214837d73f8dcd145e0b405294ffc75..cf8ce0c46f1d4e284977069a5881c40699481ff5 100644 (file)
--- a/libavcodec/dxa.c
+++ b/libavcodec/dxa.c
@@ -270,6 +270,10 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     case 13:
         c->pic.key_frame = 0;
         c->pic.pict_type = AV_PICTURE_TYPE_P;
+        if (!c->prev.data[0]) {
+            av_log(avctx, AV_LOG_ERROR, "Missing reference frame\n");
+            return AVERROR_INVALIDDATA;
+        }
         decode_13(avctx, c, c->pic.data[0], srcptr, c->prev.data[0]);
         break;
     default: