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);