diff --git a/audio/2.0/default/StreamOut.h b/audio/2.0/default/StreamOut.h
new file mode 100644
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--- /dev/null
+++ b/audio/2.0/default/StreamOut.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef HIDL_GENERATED_android_hardware_audio_V2_0_StreamOut_H_
+#define HIDL_GENERATED_android_hardware_audio_V2_0_StreamOut_H_
+
+#include <android/hardware/audio/2.0/IStreamOut.h>
+#include <hidl/Status.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "Stream.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+using ::android::hardware::audio::common::V2_0::AudioChannelMask;
+using ::android::hardware::audio::common::V2_0::AudioDevice;
+using ::android::hardware::audio::common::V2_0::AudioFormat;
+using ::android::hardware::audio::V2_0::AudioDrain;
+using ::android::hardware::audio::V2_0::DeviceAddress;
+using ::android::hardware::audio::V2_0::IStream;
+using ::android::hardware::audio::V2_0::IStreamOut;
+using ::android::hardware::audio::V2_0::IStreamOutCallback;
+using ::android::hardware::audio::V2_0::ParameterValue;
+using ::android::hardware::audio::V2_0::Result;
+using ::android::hardware::audio::V2_0::TimeSpec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+struct StreamOut : public IStreamOut {
+    StreamOut(audio_hw_device_t* device, audio_stream_out_t* stream);
+
+    // Methods from ::android::hardware::audio::V2_0::IStream follow.
+    Return<uint64_t> getFrameSize()  override;
+    Return<uint64_t> getFrameCount()  override;
+    Return<uint64_t> getBufferSize()  override;
+    Return<uint32_t> getSampleRate()  override;
+    Return<void> getSupportedSampleRates(getSupportedSampleRates_cb _hidl_cb)  override;
+    Return<Result> setSampleRate(uint32_t sampleRateHz)  override;
+    Return<AudioChannelMask> getChannelMask()  override;
+    Return<void> getSupportedChannelMasks(getSupportedChannelMasks_cb _hidl_cb)  override;
+    Return<Result> setChannelMask(AudioChannelMask mask)  override;
+    Return<AudioFormat> getFormat()  override;
+    Return<void> getSupportedFormats(getSupportedFormats_cb _hidl_cb)  override;
+    Return<Result> setFormat(AudioFormat format)  override;
+    Return<void> getAudioProperties(getAudioProperties_cb _hidl_cb)  override;
+    Return<Result> addEffect(uint64_t effectId)  override;
+    Return<Result> removeEffect(uint64_t effectId)  override;
+    Return<Result> standby()  override;
+    Return<AudioDevice> getDevice()  override;
+    Return<Result> setDevice(const DeviceAddress& address)  override;
+    Return<Result> setConnectedState(const DeviceAddress& address, bool connected)  override;
+    Return<Result> setHwAvSync(uint32_t hwAvSync)  override;
+    Return<void> getParameters(
+            const hidl_vec<hidl_string>& keys, getParameters_cb _hidl_cb)  override;
+    Return<Result> setParameters(const hidl_vec<ParameterValue>& parameters)  override;
+    Return<void> debugDump(const native_handle_t* fd)  override;
+
+    // Methods from ::android::hardware::audio::V2_0::IStreamOut follow.
+    Return<uint32_t> getLatency()  override;
+    Return<Result> setVolume(float left, float right)  override;
+    Return<void> write(const hidl_vec<uint8_t>& data, write_cb _hidl_cb)  override;
+    Return<void> getRenderPosition(getRenderPosition_cb _hidl_cb)  override;
+    Return<void> getNextWriteTimestamp(getNextWriteTimestamp_cb _hidl_cb)  override;
+    Return<Result> setCallback(const sp<IStreamOutCallback>& callback)  override;
+    Return<void> supportsPauseAndResume(supportsPauseAndResume_cb _hidl_cb)  override;
+    Return<Result> pause()  override;
+    Return<Result> resume()  override;
+    Return<bool> supportsDrain()  override;
+    Return<Result> drain(AudioDrain type)  override;
+    Return<Result> flush()  override;
+    Return<void> getPresentationPosition(getPresentationPosition_cb _hidl_cb)  override;
+
+  private:
+    audio_hw_device_t *mDevice;
+    audio_stream_out_t *mStream;
+    sp<Stream> mStreamCommon;
+    // Do not store sp<> to avoid creating a reference loop if the entity that holds
+    // onto the output stream owns or implements the callback.
+    wp<IStreamOutCallback> mCallback;
+
+    virtual ~StreamOut();
+
+    static int asyncCallback(stream_callback_event_t event, void *param, void *cookie);
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_GENERATED_android_hardware_audio_V2_0_StreamOut_H_