AAudioService: integrated with audioserver

Call the MmapStreamInterface from AudioFlinger instead of the FakeHAL.
Fix sending timestamps from the thread.
Add shared mode in service.

Bug: 35260844
Test: CTS test_aaudio.cpp
Change-Id: I44c7e4ecae4ce205611b6b73a72e0ae8a5b243e5
Signed-off-by: Phil Burk <philburk@google.com>
diff --git a/media/libaaudio/src/fifo/FifoController.h b/media/libaaudio/src/fifo/FifoController.h
index 7434634..79d98a1 100644
--- a/media/libaaudio/src/fifo/FifoController.h
+++ b/media/libaaudio/src/fifo/FifoController.h
@@ -22,6 +22,8 @@
 
 #include "FifoControllerBase.h"
 
+namespace android {
+
 /**
  * A FIFO with counters contained in the class.
  */
@@ -55,5 +57,6 @@
     std::atomic<fifo_counter_t> mWriteCounter;
 };
 
+}  // android
 
 #endif //FIFO_FIFO_CONTROLLER_H