aaudio:  validate audio data format

Also lots of minor cleanup
Fix underscores in some headers
Refactor getTimestamp()

Bug: 34127069
Bug: 38227780
Test: CTS test_aaudio.cpp
Change-Id: I6fdb50eb00a41688df871018ced91d5f5f055f8a
Signed-off-by: Phil Burk <philburk@google.com>
diff --git a/media/libaaudio/src/binding/AAudioServiceInterface.h b/media/libaaudio/src/binding/AAudioServiceInterface.h
index b565499..824e5bc 100644
--- a/media/libaaudio/src/binding/AAudioServiceInterface.h
+++ b/media/libaaudio/src/binding/AAudioServiceInterface.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef AAUDIO_BINDING_AAUDIO_SERVICE_INTERFACE_H
-#define AAUDIO_BINDING_AAUDIO_SERVICE_INTERFACE_H
+#ifndef ANDROID_AAUDIO_BINDING_AAUDIO_SERVICE_INTERFACE_H
+#define ANDROID_AAUDIO_BINDING_AAUDIO_SERVICE_INTERFACE_H
 
 #include "binding/AAudioServiceDefinitions.h"
 #include "binding/AAudioStreamRequest.h"
@@ -87,4 +87,4 @@
 
 } /* namespace aaudio */
 
-#endif //AAUDIO_BINDING_AAUDIO_SERVICE_INTERFACE_H
+#endif //ANDROID_AAUDIO_BINDING_AAUDIO_SERVICE_INTERFACE_H