From 128abf6b1ace9c790ba7f42d976d3035cbe347b6 Mon Sep 17 00:00:00 2001
From: Fraunhofer IIS FDK <audio-fdk@iis.fraunhofer.de>
Date: Fri, 9 Aug 2019 17:06:37 +0200
Subject: Validate aacSampleRate after applying ELD downscale factor. Avoid
 division by zero.

Bug: 131430997
Test: atest DecoderTestXheAac ; atest DecoderTestAacDrc
Change-Id: I3f7ece9451121d40fab2c97571c695c1ac62bd00
---
 libAACdec/src/aacdecoder.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'libAACdec/src/aacdecoder.cpp')

diff --git a/libAACdec/src/aacdecoder.cpp b/libAACdec/src/aacdecoder.cpp
index 7617937..38ef4f8 100644
--- a/libAACdec/src/aacdecoder.cpp
+++ b/libAACdec/src/aacdecoder.cpp
@@ -1928,6 +1928,9 @@ CAacDecoder_Init(HANDLE_AACDECODER self, const CSAudioSpecificConfig *asc,
           self->samplingRateInfo[0].samplingRate / self->downscaleFactor;
       self->streamInfo.aacSamplesPerFrame =
           asc->m_samplesPerFrame / self->downscaleFactor;
+      if (self->streamInfo.aacSampleRate <= 0) {
+        return AAC_DEC_UNSUPPORTED_SAMPLINGRATE;
+      }
     }
   }
 
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