diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index f7eb397..1c8746f 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -650,6 +650,8 @@
     //  a value of AUDIO_PORT_HANDLE_NONE indicated default (AudioPolicyManager) routing.
     audio_port_handle_t    mSelectedDeviceId;
     sp<AudioSystem::AudioDeviceCallback> mDeviceCallback;
+    audio_port_handle_t    mPortId;  // unique ID allocated by audio policy
+
 };
 
 }; // namespace android
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 0533ba6..0e9960f 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -217,12 +217,10 @@
                                      audio_session_t session,
                                      audio_stream_type_t *stream,
                                      uid_t uid,
-                                     uint32_t samplingRate = 0,
-                                     audio_format_t format = AUDIO_FORMAT_DEFAULT,
-                                     audio_channel_mask_t channelMask = AUDIO_CHANNEL_OUT_STEREO,
-                                     audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
-                                     audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
-                                     const audio_offload_info_t *offloadInfo = NULL);
+                                     const audio_config_t *config,
+                                     audio_output_flags_t flags,
+                                     audio_port_handle_t selectedDeviceId,
+                                     audio_port_handle_t *portId);
     static status_t startOutput(audio_io_handle_t output,
                                 audio_stream_type_t stream,
                                 audio_session_t session);
@@ -240,11 +238,10 @@
                                     audio_session_t session,
                                     pid_t pid,
                                     uid_t uid,
-                                    uint32_t samplingRate,
-                                    audio_format_t format,
-                                    audio_channel_mask_t channelMask,
+                                    const audio_config_base_t *config,
                                     audio_input_flags_t flags,
-                                    audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE);
+                                    audio_port_handle_t selectedDeviceId,
+                                    audio_port_handle_t *portId);
 
     static status_t startInput(audio_io_handle_t input,
                                audio_session_t session);
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index 7c5686a..cd33a44 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -1134,6 +1134,7 @@
     pid_t                   mClientPid;
 
     sp<AudioSystem::AudioDeviceCallback> mDeviceCallback;
+    audio_port_handle_t     mPortId;  // unique ID allocated by audio policy
 };
 
 }; // namespace android
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 638f552..56cecea 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -66,7 +66,8 @@
                                 pid_t tid,  // -1 means unused, otherwise must be valid non-0
                                 audio_session_t *sessionId,
                                 int clientUid,
-                                status_t *status) = 0;
+                                status_t *status,
+                                audio_port_handle_t portId) = 0;
 
     virtual sp<IAudioRecord> openRecord(
                                 // On successful return, AudioFlinger takes over the handle
@@ -86,7 +87,8 @@
                                 size_t *notificationFrames,
                                 sp<IMemory>& cblk,
                                 sp<IMemory>& buffers,   // return value 0 means it follows cblk
-                                status_t *status) = 0;
+                                status_t *status,
+                                audio_port_handle_t portId) = 0;
 
     // FIXME Surprisingly, format/latency don't work for input handles
 
diff --git a/include/media/IAudioPolicyService.h b/include/media/IAudioPolicyService.h
index 5637dd5..e8db4b1 100644
--- a/include/media/IAudioPolicyService.h
+++ b/include/media/IAudioPolicyService.h
@@ -63,12 +63,10 @@
                                       audio_session_t session,
                                       audio_stream_type_t *stream,
                                       uid_t uid,
-                                      uint32_t samplingRate = 0,
-                                      audio_format_t format = AUDIO_FORMAT_DEFAULT,
-                                      audio_channel_mask_t channelMask = 0,
-                                      audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE,
-                                      audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE,
-                                      const audio_offload_info_t *offloadInfo = NULL) = 0;
+                                      const audio_config_t *config,
+                                      audio_output_flags_t flags,
+                                      audio_port_handle_t selectedDeviceId,
+                                      audio_port_handle_t *portId) = 0;
     virtual status_t startOutput(audio_io_handle_t output,
                                  audio_stream_type_t stream,
                                  audio_session_t session) = 0;
@@ -83,11 +81,10 @@
                               audio_session_t session,
                               pid_t pid,
                               uid_t uid,
-                              uint32_t samplingRate,
-                              audio_format_t format,
-                              audio_channel_mask_t channelMask,
+                              const audio_config_base_t *config,
                               audio_input_flags_t flags,
-                              audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE) = 0;
+                              audio_port_handle_t selectedDeviceId,
+                              audio_port_handle_t *portId) = 0;
     virtual status_t startInput(audio_io_handle_t input,
                                 audio_session_t session) = 0;
     virtual status_t stopInput(audio_io_handle_t input,