diff --git a/services/audiopolicy/AudioPolicyInterfaceImplLegacy.cpp b/services/audiopolicy/AudioPolicyInterfaceImplLegacy.cpp
new file mode 100644
index 0000000..bb62ab3
--- /dev/null
+++ b/services/audiopolicy/AudioPolicyInterfaceImplLegacy.cpp
@@ -0,0 +1,489 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#define LOG_TAG "AudioPolicyService"
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+#include "AudioPolicyService.h"
+#include "ServiceUtilities.h"
+
+#include <system/audio.h>
+#include <system/audio_policy.h>
+#include <hardware/audio_policy.h>
+
+namespace android {
+
+
+// ----------------------------------------------------------------------------
+
+status_t AudioPolicyService::setDeviceConnectionState(audio_devices_t device,
+                                                  audio_policy_dev_state_t state,
+                                                  const char *device_address)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    if (!settingsAllowed()) {
+        return PERMISSION_DENIED;
+    }
+    if (!audio_is_output_device(device) && !audio_is_input_device(device)) {
+        return BAD_VALUE;
+    }
+    if (state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE &&
+            state != AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) {
+        return BAD_VALUE;
+    }
+
+    ALOGV("setDeviceConnectionState()");
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->set_device_connection_state(mpAudioPolicy, device,
+                                                      state, device_address);
+}
+
+audio_policy_dev_state_t AudioPolicyService::getDeviceConnectionState(
+                                                              audio_devices_t device,
+                                                              const char *device_address)
+{
+    if (mpAudioPolicy == NULL) {
+        return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
+    }
+    return mpAudioPolicy->get_device_connection_state(mpAudioPolicy, device,
+                                                      device_address);
+}
+
+status_t AudioPolicyService::setPhoneState(audio_mode_t state)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    if (!settingsAllowed()) {
+        return PERMISSION_DENIED;
+    }
+    if (uint32_t(state) >= AUDIO_MODE_CNT) {
+        return BAD_VALUE;
+    }
+
+    ALOGV("setPhoneState()");
+
+    // TODO: check if it is more appropriate to do it in platform specific policy manager
+    AudioSystem::setMode(state);
+
+    Mutex::Autolock _l(mLock);
+    mpAudioPolicy->set_phone_state(mpAudioPolicy, state);
+    return NO_ERROR;
+}
+
+status_t AudioPolicyService::setForceUse(audio_policy_force_use_t usage,
+                                         audio_policy_forced_cfg_t config)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    if (!settingsAllowed()) {
+        return PERMISSION_DENIED;
+    }
+    if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) {
+        return BAD_VALUE;
+    }
+    if (config < 0 || config >= AUDIO_POLICY_FORCE_CFG_CNT) {
+        return BAD_VALUE;
+    }
+    ALOGV("setForceUse()");
+    Mutex::Autolock _l(mLock);
+    mpAudioPolicy->set_force_use(mpAudioPolicy, usage, config);
+    return NO_ERROR;
+}
+
+audio_policy_forced_cfg_t AudioPolicyService::getForceUse(audio_policy_force_use_t usage)
+{
+    if (mpAudioPolicy == NULL) {
+        return AUDIO_POLICY_FORCE_NONE;
+    }
+    if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) {
+        return AUDIO_POLICY_FORCE_NONE;
+    }
+    return mpAudioPolicy->get_force_use(mpAudioPolicy, usage);
+}
+
+audio_io_handle_t AudioPolicyService::getOutput(audio_stream_type_t stream,
+                                    uint32_t samplingRate,
+                                    audio_format_t format,
+                                    audio_channel_mask_t channelMask,
+                                    audio_output_flags_t flags,
+                                    const audio_offload_info_t *offloadInfo)
+{
+    if (mpAudioPolicy == NULL) {
+        return 0;
+    }
+    ALOGV("getOutput()");
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->get_output(mpAudioPolicy, stream, samplingRate,
+                                    format, channelMask, flags, offloadInfo);
+}
+
+status_t AudioPolicyService::startOutput(audio_io_handle_t output,
+                                         audio_stream_type_t stream,
+                                         int session)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    ALOGV("startOutput()");
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->start_output(mpAudioPolicy, output, stream, session);
+}
+
+status_t AudioPolicyService::stopOutput(audio_io_handle_t output,
+                                        audio_stream_type_t stream,
+                                        int session)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    ALOGV("stopOutput()");
+    mOutputCommandThread->stopOutputCommand(output, stream, session);
+    return NO_ERROR;
+}
+
+status_t  AudioPolicyService::doStopOutput(audio_io_handle_t output,
+                                      audio_stream_type_t stream,
+                                      int session)
+{
+    ALOGV("doStopOutput from tid %d", gettid());
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->stop_output(mpAudioPolicy, output, stream, session);
+}
+
+void AudioPolicyService::releaseOutput(audio_io_handle_t output)
+{
+    if (mpAudioPolicy == NULL) {
+        return;
+    }
+    ALOGV("releaseOutput()");
+    mOutputCommandThread->releaseOutputCommand(output);
+}
+
+void AudioPolicyService::doReleaseOutput(audio_io_handle_t output)
+{
+    ALOGV("doReleaseOutput from tid %d", gettid());
+    Mutex::Autolock _l(mLock);
+    mpAudioPolicy->release_output(mpAudioPolicy, output);
+}
+
+audio_io_handle_t AudioPolicyService::getInput(audio_source_t inputSource,
+                                    uint32_t samplingRate,
+                                    audio_format_t format,
+                                    audio_channel_mask_t channelMask,
+                                    int audioSession)
+{
+    if (mpAudioPolicy == NULL) {
+        return 0;
+    }
+    // already checked by client, but double-check in case the client wrapper is bypassed
+    if (inputSource >= AUDIO_SOURCE_CNT && inputSource != AUDIO_SOURCE_HOTWORD) {
+        return 0;
+    }
+
+    if ((inputSource == AUDIO_SOURCE_HOTWORD) && !captureHotwordAllowed()) {
+        return 0;
+    }
+
+    Mutex::Autolock _l(mLock);
+    // the audio_in_acoustics_t parameter is ignored by get_input()
+    audio_io_handle_t input = mpAudioPolicy->get_input(mpAudioPolicy, inputSource, samplingRate,
+                                                   format, channelMask, (audio_in_acoustics_t) 0);
+
+    if (input == 0) {
+        return input;
+    }
+    // create audio pre processors according to input source
+    audio_source_t aliasSource = (inputSource == AUDIO_SOURCE_HOTWORD) ?
+                                    AUDIO_SOURCE_VOICE_RECOGNITION : inputSource;
+
+    ssize_t index = mInputSources.indexOfKey(aliasSource);
+    if (index < 0) {
+        return input;
+    }
+    ssize_t idx = mInputs.indexOfKey(input);
+    InputDesc *inputDesc;
+    if (idx < 0) {
+        inputDesc = new InputDesc(audioSession);
+        mInputs.add(input, inputDesc);
+    } else {
+        inputDesc = mInputs.valueAt(idx);
+    }
+
+    Vector <EffectDesc *> effects = mInputSources.valueAt(index)->mEffects;
+    for (size_t i = 0; i < effects.size(); i++) {
+        EffectDesc *effect = effects[i];
+        sp<AudioEffect> fx = new AudioEffect(NULL, &effect->mUuid, -1, 0, 0, audioSession, input);
+        status_t status = fx->initCheck();
+        if (status != NO_ERROR && status != ALREADY_EXISTS) {
+            ALOGW("Failed to create Fx %s on input %d", effect->mName, input);
+            // fx goes out of scope and strong ref on AudioEffect is released
+            continue;
+        }
+        for (size_t j = 0; j < effect->mParams.size(); j++) {
+            fx->setParameter(effect->mParams[j]);
+        }
+        inputDesc->mEffects.add(fx);
+    }
+    setPreProcessorEnabled(inputDesc, true);
+    return input;
+}
+
+status_t AudioPolicyService::startInput(audio_io_handle_t input)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    Mutex::Autolock _l(mLock);
+
+    return mpAudioPolicy->start_input(mpAudioPolicy, input);
+}
+
+status_t AudioPolicyService::stopInput(audio_io_handle_t input)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    Mutex::Autolock _l(mLock);
+
+    return mpAudioPolicy->stop_input(mpAudioPolicy, input);
+}
+
+void AudioPolicyService::releaseInput(audio_io_handle_t input)
+{
+    if (mpAudioPolicy == NULL) {
+        return;
+    }
+    Mutex::Autolock _l(mLock);
+    mpAudioPolicy->release_input(mpAudioPolicy, input);
+
+    ssize_t index = mInputs.indexOfKey(input);
+    if (index < 0) {
+        return;
+    }
+    InputDesc *inputDesc = mInputs.valueAt(index);
+    setPreProcessorEnabled(inputDesc, false);
+    delete inputDesc;
+    mInputs.removeItemsAt(index);
+}
+
+status_t AudioPolicyService::initStreamVolume(audio_stream_type_t stream,
+                                            int indexMin,
+                                            int indexMax)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    if (!settingsAllowed()) {
+        return PERMISSION_DENIED;
+    }
+    if (uint32_t(stream) >= AUDIO_STREAM_CNT) {
+        return BAD_VALUE;
+    }
+    Mutex::Autolock _l(mLock);
+    mpAudioPolicy->init_stream_volume(mpAudioPolicy, stream, indexMin, indexMax);
+    return NO_ERROR;
+}
+
+status_t AudioPolicyService::setStreamVolumeIndex(audio_stream_type_t stream,
+                                                  int index,
+                                                  audio_devices_t device)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    if (!settingsAllowed()) {
+        return PERMISSION_DENIED;
+    }
+    if (uint32_t(stream) >= AUDIO_STREAM_CNT) {
+        return BAD_VALUE;
+    }
+    Mutex::Autolock _l(mLock);
+    if (mpAudioPolicy->set_stream_volume_index_for_device) {
+        return mpAudioPolicy->set_stream_volume_index_for_device(mpAudioPolicy,
+                                                                stream,
+                                                                index,
+                                                                device);
+    } else {
+        return mpAudioPolicy->set_stream_volume_index(mpAudioPolicy, stream, index);
+    }
+}
+
+status_t AudioPolicyService::getStreamVolumeIndex(audio_stream_type_t stream,
+                                                  int *index,
+                                                  audio_devices_t device)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    if (uint32_t(stream) >= AUDIO_STREAM_CNT) {
+        return BAD_VALUE;
+    }
+    Mutex::Autolock _l(mLock);
+    if (mpAudioPolicy->get_stream_volume_index_for_device) {
+        return mpAudioPolicy->get_stream_volume_index_for_device(mpAudioPolicy,
+                                                                stream,
+                                                                index,
+                                                                device);
+    } else {
+        return mpAudioPolicy->get_stream_volume_index(mpAudioPolicy, stream, index);
+    }
+}
+
+uint32_t AudioPolicyService::getStrategyForStream(audio_stream_type_t stream)
+{
+    if (mpAudioPolicy == NULL) {
+        return 0;
+    }
+    return mpAudioPolicy->get_strategy_for_stream(mpAudioPolicy, stream);
+}
+
+//audio policy: use audio_device_t appropriately
+
+audio_devices_t AudioPolicyService::getDevicesForStream(audio_stream_type_t stream)
+{
+    if (mpAudioPolicy == NULL) {
+        return (audio_devices_t)0;
+    }
+    return mpAudioPolicy->get_devices_for_stream(mpAudioPolicy, stream);
+}
+
+audio_io_handle_t AudioPolicyService::getOutputForEffect(const effect_descriptor_t *desc)
+{
+    // FIXME change return type to status_t, and return NO_INIT here
+    if (mpAudioPolicy == NULL) {
+        return 0;
+    }
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->get_output_for_effect(mpAudioPolicy, desc);
+}
+
+status_t AudioPolicyService::registerEffect(const effect_descriptor_t *desc,
+                                audio_io_handle_t io,
+                                uint32_t strategy,
+                                int session,
+                                int id)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    return mpAudioPolicy->register_effect(mpAudioPolicy, desc, io, strategy, session, id);
+}
+
+status_t AudioPolicyService::unregisterEffect(int id)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    return mpAudioPolicy->unregister_effect(mpAudioPolicy, id);
+}
+
+status_t AudioPolicyService::setEffectEnabled(int id, bool enabled)
+{
+    if (mpAudioPolicy == NULL) {
+        return NO_INIT;
+    }
+    return mpAudioPolicy->set_effect_enabled(mpAudioPolicy, id, enabled);
+}
+
+bool AudioPolicyService::isStreamActive(audio_stream_type_t stream, uint32_t inPastMs) const
+{
+    if (mpAudioPolicy == NULL) {
+        return 0;
+    }
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->is_stream_active(mpAudioPolicy, stream, inPastMs);
+}
+
+bool AudioPolicyService::isStreamActiveRemotely(audio_stream_type_t stream, uint32_t inPastMs) const
+{
+    if (mpAudioPolicy == NULL) {
+        return 0;
+    }
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->is_stream_active_remotely(mpAudioPolicy, stream, inPastMs);
+}
+
+bool AudioPolicyService::isSourceActive(audio_source_t source) const
+{
+    if (mpAudioPolicy == NULL) {
+        return false;
+    }
+    if (mpAudioPolicy->is_source_active == 0) {
+        return false;
+    }
+    Mutex::Autolock _l(mLock);
+    return mpAudioPolicy->is_source_active(mpAudioPolicy, source);
+}
+
+status_t AudioPolicyService::queryDefaultPreProcessing(int audioSession,
+                                                       effect_descriptor_t *descriptors,
+                                                       uint32_t *count)
+{
+
+    if (mpAudioPolicy == NULL) {
+        *count = 0;
+        return NO_INIT;
+    }
+    Mutex::Autolock _l(mLock);
+    status_t status = NO_ERROR;
+
+    size_t index;
+    for (index = 0; index < mInputs.size(); index++) {
+        if (mInputs.valueAt(index)->mSessionId == audioSession) {
+            break;
+        }
+    }
+    if (index == mInputs.size()) {
+        *count = 0;
+        return BAD_VALUE;
+    }
+    Vector< sp<AudioEffect> > effects = mInputs.valueAt(index)->mEffects;
+
+    for (size_t i = 0; i < effects.size(); i++) {
+        effect_descriptor_t desc = effects[i]->descriptor();
+        if (i < *count) {
+            descriptors[i] = desc;
+        }
+    }
+    if (effects.size() > *count) {
+        status = NO_MEMORY;
+    }
+    *count = effects.size();
+    return status;
+}
+
+bool AudioPolicyService::isOffloadSupported(const audio_offload_info_t& info)
+{
+    if (mpAudioPolicy == NULL) {
+        ALOGV("mpAudioPolicy == NULL");
+        return false;
+    }
+
+    if (mpAudioPolicy->is_offload_supported == NULL) {
+        ALOGV("HAL does not implement is_offload_supported");
+        return false;
+    }
+
+    return mpAudioPolicy->is_offload_supported(mpAudioPolicy, &info);
+}
+
+
+}; // namespace android