commit 67375a1c90c794d6001d96277d0699b92a1dc1b6
author Robert Wu <robertwu@google.com> Thu Aug 25 22:04:29 2022 +0000
committer Robert Wu <robertwu@google.com> Fri Aug 26 18:49:08 2022 +0000
tree d81c19d37ce8e3eb19e700d018147a3df1ec9743
parent 5a4e5db4030d008c10af5ba292d4ac08fa0707d3

AAudio: add a limiter instead of clipping audio

AAudio currently clips audio above sqrt(2) and below -sqrt(2).
Instead, for a smooth transition, a polynomial spline should be used.

Bug: 17914011
Test: atest test_flowgraph
Test: atest AAudioTests
Test: Test Output in OboeTester
Change-Id: Ia48537c9c914b71f6928adfc2470f17b3108e5d5

media/libaaudio/src/Android.bp

diff --git a/media/libaaudio/src/Android.bp b/media/libaaudio/src/Android.bp
index 363d219..1eba24d 100644
--- a/media/libaaudio/src/Android.bp
+++ b/media/libaaudio/src/Android.bp
@@ -209,6 +209,7 @@
         "flowgraph/ChannelCountConverter.cpp",
         "flowgraph/ClipToRange.cpp",
         "flowgraph/FlowGraphNode.cpp",
+        "flowgraph/Limiter.cpp",
         "flowgraph/ManyToMultiConverter.cpp",
         "flowgraph/MonoBlend.cpp",
         "flowgraph/MonoToMultiConverter.cpp",