commit d51329eca85112973867a6bf0d210e82d6d1c411
author Eric Laurent <elaurent@google.com> Fri Jun 30 16:06:16 2017 -0700
committer Eric Laurent <elaurent@google.com> Sun Jul 02 00:32:10 2017 +0000
tree f29ad645223b5ea22b709f4d3362f27aa14d6a9a
parent 4501b3510f9b2af2ff63a0471de24e3feea1d0a8

aaudio: enable exclusive MMAP mode support

Allow exclusive MMAP mode only if the HAL indicates
that the FD returned for shared memory buffer can be shared
with any application.

NOTE: the way the HAL indicates this is temporary until the audio
HAL is modified in next HIDL release.

Bug: 37167970
Test: check playback and capture in mmap exclusive and shared mode
Change-Id: I09c1461b2f99532ded2ef9d36d483b82096fda68

services/oboeservice/AAudioServiceStreamMMAP.h

diff --git a/services/oboeservice/AAudioServiceStreamMMAP.h b/services/oboeservice/AAudioServiceStreamMMAP.h
index fe75a10..337252d 100644
--- a/services/oboeservice/AAudioServiceStreamMMAP.h
+++ b/services/oboeservice/AAudioServiceStreamMMAP.h
@@ -43,7 +43,7 @@
     , public android::MmapStreamCallback {
 
 public:
-    AAudioServiceStreamMMAP();
+    AAudioServiceStreamMMAP(uid_t serviceUid);
     virtual ~AAudioServiceStreamMMAP();
 
 
@@ -134,6 +134,7 @@
     struct audio_mmap_buffer_info             mMmapBufferinfo;
     android::MmapStreamInterface::Client      mMmapClient;
     audio_port_handle_t                       mPortHandle = -1; // TODO review best default
+    uid_t                                     mCachedUserId = -1;
 };
 
 } // namespace aaudio