commit 37dad7380c04cd4343999ffba012a0542482acea
author Phil Burk <philburk@google.com> Tue May 23 14:07:52 2017 -0700
committer Phil Burk <philburk@google.com> Tue May 23 14:29:10 2017 -0700
tree c56c693188955fc88241f126e8ec5203e23bf81e
parent 0556a2363ff5eb49bd35dc47f2d34cc2042de052

aaudio: fix mixer volume to match AudioTrack

Bug: 62033564
Test: write_sine.cpp - play with MMAP and with Legacy and compare by ear

Change-Id: I4d142f872fabb732cab01bec8c17d821232ab2d1
Signed-off-by: Phil Burk <philburk@google.com>

services/oboeservice/AAudioServiceEndpoint.cpp

diff --git a/services/oboeservice/AAudioServiceEndpoint.cpp b/services/oboeservice/AAudioServiceEndpoint.cpp
index a2e6d33..57dc58b 100644
--- a/services/oboeservice/AAudioServiceEndpoint.cpp
+++ b/services/oboeservice/AAudioServiceEndpoint.cpp
@@ -141,7 +141,7 @@
             std::lock_guard<std::mutex> lock(mLockStreams);
             for(AAudioServiceStreamShared *sharedStream : mRunningStreams) {
                 FifoBuffer *fifo = sharedStream->getDataFifoBuffer();
-                float volume = 0.5; // TODO get from system
+                const float volume = 1.0f; // to match the perceived volume from AudioTrack
                 bool underflowed = mMixer.mix(fifo, volume);
                 underflowCount += underflowed ? 1 : 0;
                 // TODO log underflows in each stream