From b34db64961acd4ab2c10121f01b4522847fb4257 Mon Sep 17 00:00:00 2001
From: ziyue <1213642868@qq.com>
Date: Wed, 10 Aug 2022 10:44:34 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E9=9D=9E=E6=B3=95aac=20rtp?=
 =?UTF-8?q?=E5=8C=85=E5=AF=BC=E8=87=B4=E7=9A=84=E9=99=A40=E5=B4=A9?=
 =?UTF-8?q?=E6=BA=83=E9=97=AE=E9=A2=98:=20#1869?=
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---
 src/Extension/AACRtp.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Extension/AACRtp.cpp b/src/Extension/AACRtp.cpp
index ccedf65e..97c84ff6 100644
--- a/src/Extension/AACRtp.cpp
+++ b/src/Extension/AACRtp.cpp
@@ -93,6 +93,11 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
     auto end = ptr + payload_size;
     //首2字节表示Au-Header的个数，单位bit，所以除以16得到Au-Header个数
     auto au_header_count = ((ptr[0] << 8) | ptr[1]) >> 4;
+    if (!au_header_count) {
+        //问题issue: https://github.com/ZLMediaKit/ZLMediaKit/issues/1869
+        WarnL << "invalid aac rtp au_header_count";
+        return false;
+    }
     //记录au_header起始指针
     auto au_header_ptr = ptr + 2;
     ptr = au_header_ptr +  au_header_count * 2;