commit 87c9f646a94259d7c321c3b3d5947fa1778f5ac2
author Phil Burk <philburk@google.com> Wed May 17 07:22:39 2017 -0700
committer Phil Burk <philburk@google.com> Wed May 24 15:44:23 2017 -0700
tree 89c57e19157557b2cb5d7aca7bc1371e530f734c
parent da6b9eafb5de2434717aea264ad61b025bc4fe7f

aaudio: lower latency using MMAP capture

MMAP can be enabled by setting system properties.

Bug: 38267780
Test: input_monitor.cpp
Change-Id: I5e86fd1d9baef4fe59837ccbca7971acbb54d8b5
Signed-off-by: Phil Burk <philburk@google.com>

services/oboeservice/AAudioServiceStreamShared.cpp

diff --git a/services/oboeservice/AAudioServiceStreamShared.cpp b/services/oboeservice/AAudioServiceStreamShared.cpp
index 713d1f8..3bf7811 100644
--- a/services/oboeservice/AAudioServiceStreamShared.cpp
+++ b/services/oboeservice/AAudioServiceStreamShared.cpp
@@ -62,8 +62,8 @@
     ALOGD("AAudioServiceStreamShared::open(), direction = %d", direction);
     AAudioEndpointManager &mEndpointManager = AAudioEndpointManager::getInstance();
     mServiceEndpoint = mEndpointManager.openEndpoint(mAudioService, deviceId, direction);
-    ALOGD("AAudioServiceStreamShared::open(), mServiceEndPoint = %p", mServiceEndpoint);
     if (mServiceEndpoint == nullptr) {
+        ALOGE("AAudioServiceStreamShared::open(), mServiceEndPoint = %p", mServiceEndpoint);
         return AAUDIO_ERROR_UNAVAILABLE;
     }
 
@@ -134,7 +134,7 @@
     if (endpoint == nullptr) {
         return AAUDIO_ERROR_INVALID_STATE;
     }
-    // Add this stream to the mixer.
+    // For output streams, this will add the stream to the mixer.
     aaudio_result_t result = endpoint->startStream(this);
     if (result != AAUDIO_OK) {
         ALOGE("AAudioServiceStreamShared::start() mServiceEndpoint returned %d", result);