From 4847889a2f200cc7070cf51fb10fe52ffea57fcb Mon Sep 17 00:00:00 2001
From: aquilescanta <aquilescanta@google.com>
Date: Thu, 3 Jan 2019 16:02:48 +0000
Subject: [PATCH] Prevent IllegalStateException in Mp4 sniffing

If a negative value is read, sniffing should just fail.

PiperOrigin-RevId: 227689568
---
 .../com/google/android/exoplayer2/extractor/mp4/Sniffer.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/extractor/mp4/Sniffer.java b/library/core/src/main/java/com/google/android/exoplayer2/extractor/mp4/Sniffer.java
index dce00fa824..657a955ab4 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/extractor/mp4/Sniffer.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/extractor/mp4/Sniffer.java
@@ -109,7 +109,7 @@ import java.io.IOException;
         headerSize = Atom.LONG_HEADER_SIZE;
         input.peekFully(buffer.data, Atom.HEADER_SIZE, Atom.LONG_HEADER_SIZE - Atom.HEADER_SIZE);
         buffer.setLimit(Atom.LONG_HEADER_SIZE);
-        atomSize = buffer.readUnsignedLongToLong();
+        atomSize = buffer.readLong();
       } else if (atomSize == Atom.EXTENDS_TO_END_SIZE) {
         // The atom extends to the end of the file.
         long endPosition = input.getLength();