Add back builds for libaaudio examples

These will actually get installed as tests in /data/nativetest{,64}/...,
instead of into the /system/bin directory.

Test: mmma frameworks/av/media/libaaudio
Change-Id: I41e077e21e3d5c76f0fd5b4f21f7377a0c293740
diff --git a/media/libaaudio/examples/Android.bp b/media/libaaudio/examples/Android.bp
index f2e00a7..639fab2 100644
--- a/media/libaaudio/examples/Android.bp
+++ b/media/libaaudio/examples/Android.bp
@@ -1,4 +1,6 @@
+subdirs = ["*"]
+
 cc_library_headers {
     name: "libaaudio_example_utils",
-    export_include_dirs: ["."],
+    export_include_dirs: ["utils"],
 }
diff --git a/media/libaaudio/examples/input_monitor/Android.bp b/media/libaaudio/examples/input_monitor/Android.bp
new file mode 100644
index 0000000..2c3418d
--- /dev/null
+++ b/media/libaaudio/examples/input_monitor/Android.bp
@@ -0,0 +1,15 @@
+cc_test {
+    name: "input_monitor",
+    gtest: false,
+    srcs: ["src/input_monitor.cpp"],
+    shared_libs: ["libaaudio"],
+    header_libs: ["libaaudio_example_utils"],
+}
+
+cc_test {
+    name: "input_monitor_callback",
+    gtest: false,
+    srcs: ["src/input_monitor_callback.cpp"],
+    shared_libs: ["libaaudio"],
+    header_libs: ["libaaudio_example_utils"],
+}
diff --git a/media/libaaudio/examples/loopback/Android.bp b/media/libaaudio/examples/loopback/Android.bp
new file mode 100644
index 0000000..2b624a8
--- /dev/null
+++ b/media/libaaudio/examples/loopback/Android.bp
@@ -0,0 +1,7 @@
+cc_test {
+    name: "aaudio_loopback",
+    gtest: false,
+    srcs: ["src/loopback.cpp"],
+    shared_libs: ["libaaudio"],
+    header_libs: ["libaaudio_example_utils"],
+}
diff --git a/media/libaaudio/examples/write_sine/Android.bp b/media/libaaudio/examples/write_sine/Android.bp
new file mode 100644
index 0000000..f162e85
--- /dev/null
+++ b/media/libaaudio/examples/write_sine/Android.bp
@@ -0,0 +1,13 @@
+cc_test {
+    name: "write_sine",
+    srcs: ["src/write_sine.cpp"],
+    shared_libs: ["libaaudio"],
+    header_libs: ["libaaudio_example_utils"],
+}
+
+cc_test {
+    name: "write_sine_callback",
+    srcs: ["src/write_sine_callback.cpp"],
+    shared_libs: ["libaaudio"],
+    header_libs: ["libaaudio_example_utils"],
+}