avcodec/exr: handle case when |im - IM| == 1 for huff compression

2021-02-28 02:03:11 +01:00
parent bc04ea39a5
commit 85ab9deb98
1 changed files with 5 additions and 0 deletions
--- a/libavcodec/exr.c
+++ b/libavcodec/exr.c
@@ -420,6 +420,11 @@ static int huf_build_dec_table(EXRContext *s,
            td->run_sym = i;
    }

+    if (im > 0)
+        td->run_sym = 0;
+    else if (iM < 65535)
+        td->run_sym = 65535;
+
    if (td->run_sym == -1) {
        avpriv_request_sample(s->avctx, "No place for run symbol");
        return AVERROR_PATCHWELCOME;