diff --git a/audio/2.0/default/Conversions.cpp b/audio/2.0/default/Conversions.cpp
new file mode 100644
index 0000000..1ba16e1
--- /dev/null
+++ b/audio/2.0/default/Conversions.cpp
@@ -0,0 +1,63 @@
+/*
+ * 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.
+ */
+
+#include <stdio.h>
+
+#include "Conversions.h"
+
+namespace android {
+namespace hardware {
+namespace audio {
+namespace V2_0 {
+namespace implementation {
+
+std::string deviceAddressToHal(const DeviceAddress& address) {
+    // HAL assumes that the address is NUL-terminated.
+    char halAddress[AUDIO_DEVICE_MAX_ADDRESS_LEN];
+    memset(halAddress, 0, sizeof(halAddress));
+    uint32_t halDevice = static_cast<uint32_t>(address.device);
+    if ((halDevice & AUDIO_DEVICE_OUT_ALL_A2DP) != 0
+            || (halDevice & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%02X:%02X:%02X:%02X:%02X:%02X",
+                address.address.mac[0], address.address.mac[1], address.address.mac[2],
+                address.address.mac[3], address.address.mac[4], address.address.mac[5]);
+    } else if ((halDevice & AUDIO_DEVICE_OUT_IP) != 0 || (halDevice & AUDIO_DEVICE_IN_IP) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%d.%d.%d.%d",
+                address.address.ipv4[0], address.address.ipv4[1],
+                address.address.ipv4[2], address.address.ipv4[3]);
+    } else if ((halDevice & AUDIO_DEVICE_OUT_ALL_USB) != 0
+            || (halDevice & AUDIO_DEVICE_IN_ALL_USB) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "card=%d;device=%d",
+                address.address.alsa.card, address.address.alsa.device);
+    } else if ((halDevice & AUDIO_DEVICE_OUT_BUS) != 0 || (halDevice & AUDIO_DEVICE_IN_BUS) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%s", address.busAddress.c_str());
+    } else if ((halDevice & AUDIO_DEVICE_OUT_REMOTE_SUBMIX) != 0
+            || (halDevice & AUDIO_DEVICE_IN_REMOTE_SUBMIX) != 0) {
+        snprintf(halAddress, sizeof(halAddress),
+                "%s", address.rSubmixAddress.c_str());
+    }
+    return halAddress;
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace audio
+}  // namespace hardware
+}  // namespace android