Provide defaults for android.hardware.audio@6.0-impl

This will allow vendors to create instances of
this library with other names. A different name
is required if a vendor wants to provide a custom
version (e.g. in HIDL) of
android.hardware.audio@6.0-impl and still
be able to use the library itself (e.g. to load
audio.r_submix.default) -
android.hardware.audio.service does not load both
libraries and prefers the default one.

Bug: 161485545
Test: boot emulator, check if audio works
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: I55c4f9b1386be3464ad0f5f2568423843e7eae88

audio/core/all-versions/default/Android.bp

@@ -1,8 +1,5 @@
-cc_defaults {
-    name: "android.hardware.audio-impl_default",
-    relative_install_path: "hw",
-    proprietary: true,
-    vendor: true,
+filegroup {
+    name: "android.hardware.audio-impl_srcs",
     srcs: [
         "Conversions.cpp",
         "Device.cpp",
@@ -13,11 +10,24 @@ cc_defaults {
         "StreamIn.cpp",
         "StreamOut.cpp",
     ],
+}
+
+cc_library_headers {
+    name: "android.hardware.audio-impl_headers",
+    proprietary: true,
+    vendor: true,
+    export_include_dirs: ["include"],
+}
+
+cc_defaults {
+    name: "android.hardware.audio-impl_default",
+    relative_install_path: "hw",
+    proprietary: true,
+    vendor: true,
+    srcs: [":android.hardware.audio-impl_srcs"],
 
     defaults: ["hidl_defaults"],
 
-    export_include_dirs: ["include"],
-
     static_libs: [
         "libaudiofoundation",
     ],
@@ -35,12 +45,17 @@ cc_defaults {
     ],
 
     header_libs: [
+        "android.hardware.audio-impl_headers",
         "android.hardware.audio.common.util@all-versions",
         "libaudioclient_headers",
         "libaudio_system_headers",
         "libhardware_headers",
         "libmedia_headers",
     ],
+
+    export_header_lib_headers: [
+        "android.hardware.audio-impl_headers",
+    ],
 }
 
 cc_library_shared {
@@ -89,8 +104,8 @@ cc_library_shared {
     ],
 }
 
-cc_library_shared {
-    name: "android.hardware.audio@6.0-impl",
+cc_defaults {
+    name: "android.hardware.audio@6.0-impl_default",
     defaults: ["android.hardware.audio-impl_default"],
     shared_libs: [
         "android.hardware.audio@6.0",
@@ -103,3 +118,8 @@ cc_library_shared {
         "-include common/all-versions/VersionMacro.h",
     ],
 }
+
+cc_library_shared {
+    name: "android.hardware.audio@6.0-impl",
+    defaults: ["android.hardware.audio@6.0-impl_default"],
+}