From 81215a030aaf2df41a12f20ea6cd74343ac1c805 Mon Sep 17 00:00:00 2001
From: Nicholas Guriev <nicholas@guriev.su>
Date: Fri, 28 May 2021 15:34:42 +0300
Subject: [PATCH] Reject reversed frames

Change-Id: I162cfaf0a68967f2e248a3c3af4a0fbb2ce30a54
Signed-off-by: jykeon <jykeon@samsung.com>
---
 src/lottie/lottieparser.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lottie/lottieparser.cpp b/src/lottie/lottieparser.cpp
index 3cb3f76..ebaaf3e 100644
--- a/src/lottie/lottieparser.cpp
+++ b/src/lottie/lottieparser.cpp
@@ -688,6 +688,10 @@ void LottieParserImpl::parseComposition()
         // don't have a valid bodymovin header
         return;
     }
+    if (comp->mStartFrame > comp->mEndFrame) {
+        // reveresed animation? missing data?
+        return;
+    }
     if (!IsValid()) {
         return;
     }
-- 
2.34.1