diff --git a/audio/4.0/Android.bp b/audio/4.0/Android.bp
new file mode 100644
index 0000000..6e217d9
--- /dev/null
+++ b/audio/4.0/Android.bp
@@ -0,0 +1,48 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.audio@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IDevice.hal",
+        "IDevicesFactory.hal",
+        "IPrimaryDevice.hal",
+        "IStream.hal",
+        "IStreamIn.hal",
+        "IStreamOut.hal",
+        "IStreamOutCallback.hal",
+    ],
+    interfaces: [
+        "android.hardware.audio.common@4.0",
+        "android.hardware.audio.effect@4.0",
+        "android.hidl.base@1.0",
+    ],
+    types: [
+        "AudioDrain",
+        "AudioFrequencyResponsePoint",
+        "AudioMicrophoneChannelMapping",
+        "AudioMicrophoneCoordinate",
+        "AudioMicrophoneDirectionality",
+        "AudioMicrophoneLocation",
+        "DeviceAddress",
+        "MessageQueueFlagBits",
+        "MicrophoneInfo",
+        "MmapBufferFlag",
+        "MmapBufferInfo",
+        "MmapPosition",
+        "ParameterValue",
+        "PlaybackTrackMetadata",
+        "RecordTrackMetadata",
+        "Result",
+        "SinkMetadata",
+        "SourceMetadata",
+        "TimeSpec",
+    ],
+    gen_java: false,
+    gen_java_constants: true,
+}
+
diff --git a/audio/common/4.0/Android.bp b/audio/common/4.0/Android.bp
new file mode 100644
index 0000000..9b737dc
--- /dev/null
+++ b/audio/common/4.0/Android.bp
@@ -0,0 +1,48 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.audio.common@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+    ],
+    types: [
+        "AudioChannelMask",
+        "AudioConfig",
+        "AudioContentType",
+        "AudioDevice",
+        "AudioFormat",
+        "AudioGain",
+        "AudioGainConfig",
+        "AudioGainMode",
+        "AudioHandleConsts",
+        "AudioInputFlag",
+        "AudioMixLatencyClass",
+        "AudioMode",
+        "AudioOffloadInfo",
+        "AudioOutputFlag",
+        "AudioPort",
+        "AudioPortConfig",
+        "AudioPortConfigDeviceExt",
+        "AudioPortConfigMask",
+        "AudioPortConfigSessionExt",
+        "AudioPortDeviceExt",
+        "AudioPortMixExt",
+        "AudioPortRole",
+        "AudioPortSessionExt",
+        "AudioPortType",
+        "AudioSessionConsts",
+        "AudioSource",
+        "AudioStreamType",
+        "AudioUsage",
+        "FixedChannelCount",
+        "ThreadInfo",
+        "Uuid",
+    ],
+    gen_java: false,
+    gen_java_constants: true,
+}
+
diff --git a/audio/effect/4.0/Android.bp b/audio/effect/4.0/Android.bp
new file mode 100644
index 0000000..e7676a9
--- /dev/null
+++ b/audio/effect/4.0/Android.bp
@@ -0,0 +1,47 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.audio.effect@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IAcousticEchoCancelerEffect.hal",
+        "IAutomaticGainControlEffect.hal",
+        "IBassBoostEffect.hal",
+        "IDownmixEffect.hal",
+        "IEffect.hal",
+        "IEffectBufferProviderCallback.hal",
+        "IEffectsFactory.hal",
+        "IEnvironmentalReverbEffect.hal",
+        "IEqualizerEffect.hal",
+        "ILoudnessEnhancerEffect.hal",
+        "INoiseSuppressionEffect.hal",
+        "IPresetReverbEffect.hal",
+        "IVirtualizerEffect.hal",
+        "IVisualizerEffect.hal",
+    ],
+    interfaces: [
+        "android.hardware.audio.common@4.0",
+        "android.hidl.base@1.0",
+    ],
+    types: [
+        "AudioBuffer",
+        "EffectAuxChannelsConfig",
+        "EffectBufferAccess",
+        "EffectBufferConfig",
+        "EffectConfig",
+        "EffectConfigParameters",
+        "EffectDescriptor",
+        "EffectFeature",
+        "EffectFlags",
+        "EffectOffloadParameter",
+        "MessageQueueFlagBits",
+        "Result",
+    ],
+    gen_java: false,
+    gen_java_constants: true,
+}
+