From f2ea43a808a7f23093b318e6400c67690f2c026b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sigrid=20Solveig=20Hafl=C3=ADnud=C3=B3ttir?=
 <ftrvxmtrx@gmail.com>
Date: Tue, 2 Mar 2021 15:11:57 +0000
Subject: [PATCH] matroska: fix refblock handling

---
 matroska.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/matroska.c b/matroska.c
index 8041f8c..681f601 100644
--- a/matroska.c
+++ b/matroska.c
@@ -243,11 +243,10 @@ matroskarun(Biobuf *f)
 
 		if(off >= bgend && !skipdata){
 			if(npackets > 0){
-				if(te.fpacket(&out, &te, packets, npackets, ts, key || refblock) != 0)
+				if(te.fpacket(&out, &te, packets, npackets, ts, key || !refblock) != 0)
 					goto err;
 				npackets = 0;
 			}
-			refblock = 0;
 		}
 
 		n = ebmlel(f, left, &el, &sz);
@@ -311,7 +310,7 @@ matroskarun(Biobuf *f)
 			continue;
 		}else if(el.id == EBlockGroup && !skipdata){
 			refblock = 0;
-			bgend = off+sz;
+			bgend = off+n+sz;
 			npackets = 0;
 			continue;
 		}else if((el.id == ESimpleBlock || el.id == EBlock) && !skipdata){
-- 
2.45.2