diff --git a/services/audiopolicy/AudioPolicyClientImpl.cpp b/services/audiopolicy/AudioPolicyClientImpl.cpp
index 53f3e2d..44c47c3 100644
--- a/services/audiopolicy/AudioPolicyClientImpl.cpp
+++ b/services/audiopolicy/AudioPolicyClientImpl.cpp
@@ -14,44 +14,17 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "AudioPolicyService"
+#define LOG_TAG "AudioPolicyClientImpl"
 //#define LOG_NDEBUG 0
 
-#include "Configuration.h"
-#undef __STRICT_ANSI__
-#define __STDINT_LIMITS
-#define __STDC_LIMIT_MACROS
-#include <stdint.h>
-
-#include <sys/time.h>
-#include <binder/IServiceManager.h>
 #include <utils/Log.h>
-#include <cutils/properties.h>
-#include <binder/IPCThreadState.h>
-#include <utils/String16.h>
-#include <utils/threads.h>
 #include "AudioPolicyService.h"
-#include "ServiceUtilities.h"
-#include <hardware_legacy/power.h>
-#include <media/AudioEffect.h>
-#include <media/EffectsFactoryApi.h>
-//#include <media/IAudioFlinger.h>
-
-#include <hardware/hardware.h>
-#include <system/audio.h>
-#include <system/audio_policy.h>
-#include <hardware/audio_policy.h>
-#include <audio_effects/audio_effects_conf.h>
-#include <media/AudioParameter.h>
-
 
 namespace android {
 
-/* implementation of the interface to the policy manager */
-extern "C" {
+/* implementation of the client interface from the policy manager */
 
-audio_module_handle_t aps_load_hw_module(void *service __unused,
-                                             const char *name)
+audio_module_handle_t AudioPolicyService::AudioPolicyClient::loadHwModule(const char *name)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -62,34 +35,14 @@
     return af->loadHwModule(name);
 }
 
-// deprecated: replaced by aps_open_output_on_module()
-audio_io_handle_t aps_open_output(void *service __unused,
-                                         audio_devices_t *pDevices,
-                                         uint32_t *pSamplingRate,
-                                         audio_format_t *pFormat,
-                                         audio_channel_mask_t *pChannelMask,
-                                         uint32_t *pLatencyMs,
-                                         audio_output_flags_t flags)
-{
-    sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
-    if (af == 0) {
-        ALOGW("%s: could not get AudioFlinger", __func__);
-        return 0;
-    }
-
-    return af->openOutput((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask,
-                          pLatencyMs, flags);
-}
-
-audio_io_handle_t aps_open_output_on_module(void *service __unused,
-                                                   audio_module_handle_t module,
-                                                   audio_devices_t *pDevices,
-                                                   uint32_t *pSamplingRate,
-                                                   audio_format_t *pFormat,
-                                                   audio_channel_mask_t *pChannelMask,
-                                                   uint32_t *pLatencyMs,
-                                                   audio_output_flags_t flags,
-                                                   const audio_offload_info_t *offloadInfo)
+audio_io_handle_t AudioPolicyService::AudioPolicyClient::openOutput(audio_module_handle_t module,
+                               audio_devices_t *pDevices,
+                               uint32_t *pSamplingRate,
+                               audio_format_t *pFormat,
+                               audio_channel_mask_t *pChannelMask,
+                               uint32_t *pLatencyMs,
+                               audio_output_flags_t flags,
+                               const audio_offload_info_t *offloadInfo)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -100,9 +53,9 @@
                           pLatencyMs, flags, offloadInfo);
 }
 
-audio_io_handle_t aps_open_dup_output(void *service __unused,
-                                                 audio_io_handle_t output1,
-                                                 audio_io_handle_t output2)
+audio_io_handle_t AudioPolicyService::AudioPolicyClient::openDuplicateOutput(
+                                                                audio_io_handle_t output1,
+                                                                audio_io_handle_t output2)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -112,7 +65,7 @@
     return af->openDuplicateOutput(output1, output2);
 }
 
-int aps_close_output(void *service __unused, audio_io_handle_t output)
+status_t AudioPolicyService::AudioPolicyClient::closeOutput(audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -122,7 +75,7 @@
     return af->closeOutput(output);
 }
 
-int aps_suspend_output(void *service __unused, audio_io_handle_t output)
+status_t AudioPolicyService::AudioPolicyClient::suspendOutput(audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -133,7 +86,7 @@
     return af->suspendOutput(output);
 }
 
-int aps_restore_output(void *service __unused, audio_io_handle_t output)
+status_t AudioPolicyService::AudioPolicyClient::restoreOutput(audio_io_handle_t output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -144,29 +97,11 @@
     return af->restoreOutput(output);
 }
 
-// deprecated: replaced by aps_open_input_on_module(), and acoustics parameter is ignored
-audio_io_handle_t aps_open_input(void *service __unused,
-                                        audio_devices_t *pDevices,
-                                        uint32_t *pSamplingRate,
-                                        audio_format_t *pFormat,
-                                        audio_channel_mask_t *pChannelMask,
-                                        audio_in_acoustics_t acoustics __unused)
-{
-    sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
-    if (af == 0) {
-        ALOGW("%s: could not get AudioFlinger", __func__);
-        return 0;
-    }
-
-    return af->openInput((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask);
-}
-
-audio_io_handle_t aps_open_input_on_module(void *service __unused,
-                                                  audio_module_handle_t module,
-                                                  audio_devices_t *pDevices,
-                                                  uint32_t *pSamplingRate,
-                                                  audio_format_t *pFormat,
-                                                  audio_channel_mask_t *pChannelMask)
+audio_io_handle_t AudioPolicyService::AudioPolicyClient::openInput(audio_module_handle_t module,
+                              audio_devices_t *pDevices,
+                              uint32_t *pSamplingRate,
+                              audio_format_t *pFormat,
+                              audio_channel_mask_t *pChannelMask)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -177,7 +112,7 @@
     return af->openInput(module, pDevices, pSamplingRate, pFormat, pChannelMask);
 }
 
-int aps_close_input(void *service __unused, audio_io_handle_t input)
+status_t AudioPolicyService::AudioPolicyClient::closeInput(audio_io_handle_t input)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -187,7 +122,15 @@
     return af->closeInput(input);
 }
 
-int aps_invalidate_stream(void *service __unused, audio_stream_type_t stream)
+status_t AudioPolicyService::AudioPolicyClient::setStreamVolume(audio_stream_type_t stream,
+                     float volume, audio_io_handle_t output,
+                     int delay_ms)
+{
+    return mAudioPolicyService->setStreamVolume(stream, volume, output,
+                                               delay_ms);
+}
+
+status_t AudioPolicyService::AudioPolicyClient::invalidateStream(audio_stream_type_t stream)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -197,9 +140,39 @@
     return af->invalidateStream(stream);
 }
 
-int aps_move_effects(void *service __unused, int session,
-                                audio_io_handle_t src_output,
-                                audio_io_handle_t dst_output)
+void AudioPolicyService::AudioPolicyClient::setParameters(audio_io_handle_t io_handle,
+                   const String8& keyValuePairs,
+                   int delay_ms)
+{
+    mAudioPolicyService->setParameters(io_handle, keyValuePairs.string(), delay_ms);
+}
+
+String8 AudioPolicyService::AudioPolicyClient::getParameters(audio_io_handle_t io_handle,
+                      const String8& keys)
+{
+    String8 result = AudioSystem::getParameters(io_handle, keys);
+    return result;
+}
+
+status_t AudioPolicyService::AudioPolicyClient::startTone(audio_policy_tone_t tone,
+              audio_stream_type_t stream)
+{
+    return mAudioPolicyService->startTone(tone, stream);
+}
+
+status_t AudioPolicyService::AudioPolicyClient::stopTone()
+{
+    return mAudioPolicyService->stopTone();
+}
+
+status_t AudioPolicyService::AudioPolicyClient::setVoiceVolume(float volume, int delay_ms)
+{
+    return mAudioPolicyService->setVoiceVolume(volume, delay_ms);
+}
+
+status_t AudioPolicyService::AudioPolicyClient::moveEffects(int session,
+                        audio_io_handle_t src_output,
+                        audio_io_handle_t dst_output)
 {
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
@@ -209,53 +182,6 @@
     return af->moveEffects(session, src_output, dst_output);
 }
 
-char * aps_get_parameters(void *service __unused, audio_io_handle_t io_handle,
-                                     const char *keys)
-{
-    String8 result = AudioSystem::getParameters(io_handle, String8(keys));
-    return strdup(result.string());
-}
 
-void aps_set_parameters(void *service, audio_io_handle_t io_handle,
-                                   const char *kv_pairs, int delay_ms)
-{
-    AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
-
-    audioPolicyService->setParameters(io_handle, kv_pairs, delay_ms);
-}
-
-int aps_set_stream_volume(void *service, audio_stream_type_t stream,
-                                     float volume, audio_io_handle_t output,
-                                     int delay_ms)
-{
-    AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
-
-    return audioPolicyService->setStreamVolume(stream, volume, output,
-                                               delay_ms);
-}
-
-int aps_start_tone(void *service, audio_policy_tone_t tone,
-                              audio_stream_type_t stream)
-{
-    AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
-
-    return audioPolicyService->startTone(tone, stream);
-}
-
-int aps_stop_tone(void *service)
-{
-    AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
-
-    return audioPolicyService->stopTone();
-}
-
-int aps_set_voice_volume(void *service, float volume, int delay_ms)
-{
-    AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
-
-    return audioPolicyService->setVoiceVolume(volume, delay_ms);
-}
-
-}; // extern "C"
 
 }; // namespace android