audio: Add AIDL definitions for Playback/RecordTrackMetadata

This is a temporary change for unblocking Bluetooth
audio AIDL development. When Audio AIDL gets
released officially, it should be overwritten.

Bug: 198812639
Test: m android.hardware.audio.common
Test: m check-vintf-all
Change-Id: Ia63135da4af4682e471e7de6b191b19e7a326a1e
Merged-In: I7064c3819d4c8e61981542ca2ccc52ca992a4ef8
diff --git a/audio/aidl/Android.bp b/audio/aidl/Android.bp
new file mode 100644
index 0000000..c172674
--- /dev/null
+++ b/audio/aidl/Android.bp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.audio.common",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/audio/common/PlaybackTrackMetadata.aidl",
+        "android/hardware/audio/common/RecordTrackMetadata.aidl",
+        "android/hardware/audio/common/SinkMetadata.aidl",
+        "android/hardware/audio/common/SourceMetadata.aidl",
+    ],
+    imports: [
+        "android.media.audio.common.types",
+    ],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: true,
+        },
+        java: {
+            platform_apis: true,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+    versions: [
+    ],
+}