commit 9a48d4799826e54915f06ca25bfd4e9d81dcf8c7
author Fraunhofer IIS FDK <audio-fdk@iis.fraunhofer.de> Fri Apr 17 15:05:08 2020 +0200
committer Jean-Michel Trivi <jmtrivi@google.com> Thu Jan 14 15:13:58 2021 -0800
tree 74587f15f4cde4136750bb2bade6e3f8c3b9dfd2
parent 0c275a3341ccc11344db835ec0b206a970861667

Consider TNS headroom for complex prediction.

Bug: 176246647
Test: atest android.media.cts.DecoderTestAacFormat android.media.cts.DecoderTestXheAac android.media.cts.DecoderTestAacDrc
Change-Id: I8261106b98d7e7c5a8a2af38585c726285ea8623

libAACdec/src/channel.cpp

diff --git a/libAACdec/src/channel.cpp b/libAACdec/src/channel.cpp
index a020034..7e62bfb 100644
--- a/libAACdec/src/channel.cpp
+++ b/libAACdec/src/channel.cpp
@@ -1,7 +1,7 @@
 /* -----------------------------------------------------------------------------
 Software License for The Fraunhofer FDK AAC Codec Library for Android
 
-© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
+© Copyright  1995 - 2020 Fraunhofer-Gesellschaft zur Förderung der angewandten
 Forschung e.V. All rights reserved.
 
  1.    INTRODUCTION
@@ -265,7 +265,9 @@
          stereo prediction since scaling has already been carried out. */
       int max_sfb_ste = (INT)(pAacDecoderChannelInfo[L]->icsInfo.max_sfb_ste);
 
-      if ((!CP_active) || (CP_active && (max_sfb_ste < noSfbs)) ||
+      if (!(CP_active && (max_sfb_ste == noSfbs)) ||
+          !(CP_active &&
+            !(pAacDecoderChannelInfo[ch]->pDynData->TnsData.Active)) ||
           ((flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) &&
            (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_on_lr ==
             0))) {