Convert AudioFlinger create* arguments to AIDL

This is a first step in AIDLizing IAudioFlinger, where we are
converting the in/out arguments from create{Track,Record} to stable
AIDL and add their respective conversion functions.

Bug: 160253486
Test: atest CtsMediaTestCases:Audio*
      Manual verification of common playback and recording scenarios.
Change-Id: Iabb28472aedd90efbba673fb68574876528228df
diff --git a/media/libaudioclient/AidlConversion.cpp b/media/libaudioclient/AidlConversion.cpp
index 64da1dc..1355f54 100644
--- a/media/libaudioclient/AidlConversion.cpp
+++ b/media/libaudioclient/AidlConversion.cpp
@@ -21,15 +21,7 @@
 
 #include "media/AidlConversion.h"
 
-#define VALUE_OR_RETURN(result)                          \
-    ({                                                   \
-        auto _tmp = (result);                            \
-        if (!_tmp.ok()) return unexpected(_tmp.error()); \
-        _tmp.value();                                    \
-    })
-
-#define RETURN_IF_ERROR(result) \
-        if (status_t _tmp = (result); _tmp != OK) return unexpected(_tmp);
+#include <media/ShmemCompat.h>
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // Utilities
@@ -243,6 +235,38 @@
     return convertReinterpret<int32_t>(legacy);
 }
 
+ConversionResult<audio_unique_id_t> aidl2legacy_int32_t_audio_unique_id_t(int32_t aidl) {
+    return convertReinterpret<audio_unique_id_t>(aidl);
+}
+
+ConversionResult<int32_t> legacy2aidl_audio_unique_id_t_int32_t(audio_unique_id_t legacy) {
+    return convertReinterpret<int32_t>(legacy);
+}
+
+ConversionResult<pid_t> aidl2legacy_int32_t_pid_t(int32_t aidl) {
+    return convertReinterpret<pid_t>(aidl);
+}
+
+ConversionResult<int32_t> legacy2aidl_pid_t_int32_t(pid_t legacy) {
+    return convertReinterpret<int32_t>(legacy);
+}
+
+ConversionResult<uid_t> aidl2legacy_int32_t_uid_t(int32_t aidl) {
+    return convertReinterpret<uid_t>(aidl);
+}
+
+ConversionResult<int32_t> legacy2aidl_uid_t_int32_t(uid_t legacy) {
+    return convertReinterpret<int32_t>(legacy);
+}
+
+ConversionResult<String16> aidl2legacy_string_view_String16(std::string_view aidl) {
+    return String16(aidl.data(), aidl.size());
+}
+
+ConversionResult<std::string> legacy2aidl_String16_string(const String16& legacy) {
+    return std::string(String8(legacy).c_str());
+}
+
 // The legacy enum is unnamed. Thus, we use int.
 ConversionResult<int> aidl2legacy_AudioPortConfigType(media::AudioPortConfigType aidl) {
     switch (aidl) {
@@ -843,6 +867,9 @@
 ConversionResult<audio_source_t> aidl2legacy_AudioSourceType_audio_source_t(
         media::AudioSourceType aidl) {
     switch (aidl) {
+        case media::AudioSourceType::INVALID:
+            // This value does not have an enum
+            return AUDIO_SOURCE_INVALID;
         case media::AudioSourceType::DEFAULT:
             return AUDIO_SOURCE_DEFAULT;
         case media::AudioSourceType::MIC:
@@ -879,6 +906,8 @@
 ConversionResult<media::AudioSourceType> legacy2aidl_audio_source_t_AudioSourceType(
         audio_source_t legacy) {
     switch (legacy) {
+        case AUDIO_SOURCE_INVALID:
+            return media::AudioSourceType::INVALID;
         case AUDIO_SOURCE_DEFAULT:
             return media::AudioSourceType::DEFAULT;
         case AUDIO_SOURCE_MIC:
@@ -912,32 +941,12 @@
     }
 }
 
-ConversionResult<audio_session_t> aidl2legacy_AudioSessionType_audio_session_t(
-        media::AudioSessionType aidl) {
-    switch (aidl) {
-        case media::AudioSessionType::DEVICE:
-            return AUDIO_SESSION_DEVICE;
-        case media::AudioSessionType::OUTPUT_STAGE:
-            return AUDIO_SESSION_OUTPUT_STAGE;
-        case media::AudioSessionType::OUTPUT_MIX:
-            return AUDIO_SESSION_OUTPUT_MIX;
-        default:
-            return unexpected(BAD_VALUE);
-    }
+ConversionResult<audio_session_t> aidl2legacy_int32_t_audio_session_t(int32_t aidl) {
+    return convertReinterpret<audio_session_t>(aidl);
 }
 
-ConversionResult<media::AudioSessionType> legacy2aidl_audio_session_t_AudioSessionType(
-        audio_session_t legacy) {
-    switch (legacy) {
-        case AUDIO_SESSION_DEVICE:
-            return media::AudioSessionType::DEVICE;
-        case AUDIO_SESSION_OUTPUT_STAGE:
-            return media::AudioSessionType::OUTPUT_STAGE;
-        case AUDIO_SESSION_OUTPUT_MIX:
-            return media::AudioSessionType::OUTPUT_MIX;
-        default:
-            return unexpected(BAD_VALUE);
-    }
+ConversionResult<int32_t> legacy2aidl_audio_session_t_int32_t(audio_session_t legacy) {
+    return convertReinterpret<int32_t>(legacy);
 }
 
 // This type is unnamed in the original definition, thus we name it here.
@@ -1030,14 +1039,14 @@
 ConversionResult<audio_port_config_session_ext> aidl2legacy_AudioPortConfigSessionExt(
         const media::AudioPortConfigSessionExt& aidl) {
     audio_port_config_session_ext legacy;
-    legacy.session = VALUE_OR_RETURN(aidl2legacy_AudioSessionType_audio_session_t(aidl.session));
+    legacy.session = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl.session));
     return legacy;
 }
 
 ConversionResult<media::AudioPortConfigSessionExt> legacy2aidl_AudioPortConfigSessionExt(
         const audio_port_config_session_ext& legacy) {
     media::AudioPortConfigSessionExt aidl;
-    aidl.session = VALUE_OR_RETURN(legacy2aidl_audio_session_t_AudioSessionType(legacy.session));
+    aidl.session = VALUE_OR_RETURN(legacy2aidl_audio_session_t_int32_t(legacy.session));
     return aidl;
 }
 
@@ -1246,4 +1255,433 @@
     return aidl;
 }
 
+ConversionResult<AudioClient> aidl2legacy_AudioClient(const media::AudioClient& aidl) {
+    AudioClient legacy;
+    legacy.clientUid = VALUE_OR_RETURN(aidl2legacy_int32_t_uid_t(aidl.clientUid));
+    legacy.clientPid = VALUE_OR_RETURN(aidl2legacy_int32_t_pid_t(aidl.clientPid));
+    legacy.clientTid = VALUE_OR_RETURN(aidl2legacy_int32_t_pid_t(aidl.clientTid));
+    legacy.packageName = VALUE_OR_RETURN(aidl2legacy_string_view_String16(aidl.packageName));
+    return legacy;
+}
+
+ConversionResult<media::AudioClient> legacy2aidl_AudioClient(const AudioClient& legacy) {
+    media::AudioClient aidl;
+    aidl.clientUid = VALUE_OR_RETURN(legacy2aidl_uid_t_int32_t(legacy.clientUid));
+    aidl.clientPid = VALUE_OR_RETURN(legacy2aidl_pid_t_int32_t(legacy.clientPid));
+    aidl.clientTid = VALUE_OR_RETURN(legacy2aidl_pid_t_int32_t(legacy.clientTid));
+    aidl.packageName = VALUE_OR_RETURN(legacy2aidl_String16_string(legacy.packageName));
+    return aidl;
+}
+
+ConversionResult<audio_content_type_t>
+aidl2legacy_AudioContentType_audio_content_type_t(media::AudioContentType aidl) {
+    switch (aidl) {
+        case media::AudioContentType::UNKNOWN:
+            return AUDIO_CONTENT_TYPE_UNKNOWN;
+        case media::AudioContentType::SPEECH:
+            return AUDIO_CONTENT_TYPE_SPEECH;
+        case media::AudioContentType::MUSIC:
+            return AUDIO_CONTENT_TYPE_MUSIC;
+        case media::AudioContentType::MOVIE:
+            return AUDIO_CONTENT_TYPE_MOVIE;
+        case media::AudioContentType::SONIFICATION:
+            return AUDIO_CONTENT_TYPE_SONIFICATION;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<media::AudioContentType>
+legacy2aidl_audio_content_type_t_AudioContentType(audio_content_type_t legacy) {
+    switch (legacy) {
+        case AUDIO_CONTENT_TYPE_UNKNOWN:
+            return media::AudioContentType::UNKNOWN;
+        case AUDIO_CONTENT_TYPE_SPEECH:
+            return media::AudioContentType::SPEECH;
+        case AUDIO_CONTENT_TYPE_MUSIC:
+            return media::AudioContentType::MUSIC;
+        case AUDIO_CONTENT_TYPE_MOVIE:
+            return media::AudioContentType::MOVIE;
+        case AUDIO_CONTENT_TYPE_SONIFICATION:
+            return media::AudioContentType::SONIFICATION;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<audio_usage_t>
+aidl2legacy_AudioUsage_audio_usage_t(media::AudioUsage aidl) {
+    switch (aidl) {
+        case media::AudioUsage::UNKNOWN:
+            return AUDIO_USAGE_UNKNOWN;
+        case media::AudioUsage::MEDIA:
+            return AUDIO_USAGE_MEDIA;
+        case media::AudioUsage::VOICE_COMMUNICATION:
+            return AUDIO_USAGE_VOICE_COMMUNICATION;
+        case media::AudioUsage::VOICE_COMMUNICATION_SIGNALLING:
+            return AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
+        case media::AudioUsage::ALARM:
+            return AUDIO_USAGE_ALARM;
+        case media::AudioUsage::NOTIFICATION:
+            return AUDIO_USAGE_NOTIFICATION;
+        case media::AudioUsage::NOTIFICATION_TELEPHONY_RINGTONE:
+            return AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE;
+        case media::AudioUsage::NOTIFICATION_COMMUNICATION_REQUEST:
+            return AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST;
+        case media::AudioUsage::NOTIFICATION_COMMUNICATION_INSTANT:
+            return AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT;
+        case media::AudioUsage::NOTIFICATION_COMMUNICATION_DELAYED:
+            return AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED;
+        case media::AudioUsage::NOTIFICATION_EVENT:
+            return AUDIO_USAGE_NOTIFICATION_EVENT;
+        case media::AudioUsage::ASSISTANCE_ACCESSIBILITY:
+            return AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
+        case media::AudioUsage::ASSISTANCE_NAVIGATION_GUIDANCE:
+            return AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE;
+        case media::AudioUsage::ASSISTANCE_SONIFICATION:
+            return AUDIO_USAGE_ASSISTANCE_SONIFICATION;
+        case media::AudioUsage::GAME:
+            return AUDIO_USAGE_GAME;
+        case media::AudioUsage::VIRTUAL_SOURCE:
+            return AUDIO_USAGE_VIRTUAL_SOURCE;
+        case media::AudioUsage::ASSISTANT:
+            return AUDIO_USAGE_ASSISTANT;
+        case media::AudioUsage::CALL_ASSISTANT:
+            return AUDIO_USAGE_CALL_ASSISTANT;
+        case media::AudioUsage::EMERGENCY:
+            return AUDIO_USAGE_EMERGENCY;
+        case media::AudioUsage::SAFETY:
+            return AUDIO_USAGE_SAFETY;
+        case media::AudioUsage::VEHICLE_STATUS:
+            return AUDIO_USAGE_VEHICLE_STATUS;
+        case media::AudioUsage::ANNOUNCEMENT:
+            return AUDIO_USAGE_ANNOUNCEMENT;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<media::AudioUsage>
+legacy2aidl_audio_usage_t_AudioUsage(audio_usage_t legacy) {
+    switch (legacy) {
+        case AUDIO_USAGE_UNKNOWN:
+            return media::AudioUsage::UNKNOWN;
+        case AUDIO_USAGE_MEDIA:
+            return media::AudioUsage::MEDIA;
+        case AUDIO_USAGE_VOICE_COMMUNICATION:
+            return media::AudioUsage::VOICE_COMMUNICATION;
+        case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING:
+            return media::AudioUsage::VOICE_COMMUNICATION_SIGNALLING;
+        case AUDIO_USAGE_ALARM:
+            return media::AudioUsage::ALARM;
+        case AUDIO_USAGE_NOTIFICATION:
+            return media::AudioUsage::NOTIFICATION;
+        case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE:
+            return media::AudioUsage::NOTIFICATION_TELEPHONY_RINGTONE;
+        case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST:
+            return media::AudioUsage::NOTIFICATION_COMMUNICATION_REQUEST;
+        case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT:
+            return media::AudioUsage::NOTIFICATION_COMMUNICATION_INSTANT;
+        case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED:
+            return media::AudioUsage::NOTIFICATION_COMMUNICATION_DELAYED;
+        case AUDIO_USAGE_NOTIFICATION_EVENT:
+            return media::AudioUsage::NOTIFICATION_EVENT;
+        case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY:
+            return media::AudioUsage::ASSISTANCE_ACCESSIBILITY;
+        case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE:
+            return media::AudioUsage::ASSISTANCE_NAVIGATION_GUIDANCE;
+        case AUDIO_USAGE_ASSISTANCE_SONIFICATION:
+            return media::AudioUsage::ASSISTANCE_SONIFICATION;
+        case AUDIO_USAGE_GAME:
+            return media::AudioUsage::GAME;
+        case AUDIO_USAGE_VIRTUAL_SOURCE:
+            return media::AudioUsage::VIRTUAL_SOURCE;
+        case AUDIO_USAGE_ASSISTANT:
+            return media::AudioUsage::ASSISTANT;
+        case AUDIO_USAGE_CALL_ASSISTANT:
+            return media::AudioUsage::CALL_ASSISTANT;
+        case AUDIO_USAGE_EMERGENCY:
+            return media::AudioUsage::EMERGENCY;
+        case AUDIO_USAGE_SAFETY:
+            return media::AudioUsage::SAFETY;
+        case AUDIO_USAGE_VEHICLE_STATUS:
+            return media::AudioUsage::VEHICLE_STATUS;
+        case AUDIO_USAGE_ANNOUNCEMENT:
+            return media::AudioUsage::ANNOUNCEMENT;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<audio_flags_mask_t>
+aidl2legacy_AudioFlag_audio_flags_mask_t(media::AudioFlag aidl) {
+    switch (aidl) {
+        case media::AudioFlag::AUDIBILITY_ENFORCED:
+            return AUDIO_FLAG_AUDIBILITY_ENFORCED;
+        case media::AudioFlag::SECURE:
+            return AUDIO_FLAG_SECURE;
+        case media::AudioFlag::SCO:
+            return AUDIO_FLAG_SCO;
+        case media::AudioFlag::BEACON:
+            return AUDIO_FLAG_BEACON;
+        case media::AudioFlag::HW_AV_SYNC:
+            return AUDIO_FLAG_HW_AV_SYNC;
+        case media::AudioFlag::HW_HOTWORD:
+            return AUDIO_FLAG_HW_HOTWORD;
+        case media::AudioFlag::BYPASS_INTERRUPTION_POLICY:
+            return AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY;
+        case media::AudioFlag::BYPASS_MUTE:
+            return AUDIO_FLAG_BYPASS_MUTE;
+        case media::AudioFlag::LOW_LATENCY:
+            return AUDIO_FLAG_LOW_LATENCY;
+        case media::AudioFlag::DEEP_BUFFER:
+            return AUDIO_FLAG_DEEP_BUFFER;
+        case media::AudioFlag::NO_MEDIA_PROJECTION:
+            return AUDIO_FLAG_NO_MEDIA_PROJECTION;
+        case media::AudioFlag::MUTE_HAPTIC:
+            return AUDIO_FLAG_MUTE_HAPTIC;
+        case media::AudioFlag::NO_SYSTEM_CAPTURE:
+            return AUDIO_FLAG_NO_SYSTEM_CAPTURE;
+        case media::AudioFlag::CAPTURE_PRIVATE:
+            return AUDIO_FLAG_CAPTURE_PRIVATE;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<media::AudioFlag>
+legacy2aidl_audio_flags_mask_t_AudioFlag(audio_flags_mask_t legacy) {
+    switch (legacy) {
+        case AUDIO_FLAG_NONE:
+            return unexpected(BAD_VALUE);
+        case AUDIO_FLAG_AUDIBILITY_ENFORCED:
+            return media::AudioFlag::AUDIBILITY_ENFORCED;
+        case AUDIO_FLAG_SECURE:
+            return media::AudioFlag::SECURE;
+        case AUDIO_FLAG_SCO:
+            return media::AudioFlag::SCO;
+        case AUDIO_FLAG_BEACON:
+            return media::AudioFlag::BEACON;
+        case AUDIO_FLAG_HW_AV_SYNC:
+            return media::AudioFlag::HW_AV_SYNC;
+        case AUDIO_FLAG_HW_HOTWORD:
+            return media::AudioFlag::HW_HOTWORD;
+        case AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY:
+            return media::AudioFlag::BYPASS_INTERRUPTION_POLICY;
+        case AUDIO_FLAG_BYPASS_MUTE:
+            return media::AudioFlag::BYPASS_MUTE;
+        case AUDIO_FLAG_LOW_LATENCY:
+            return media::AudioFlag::LOW_LATENCY;
+        case AUDIO_FLAG_DEEP_BUFFER:
+            return media::AudioFlag::DEEP_BUFFER;
+        case AUDIO_FLAG_NO_MEDIA_PROJECTION:
+            return media::AudioFlag::NO_MEDIA_PROJECTION;
+        case AUDIO_FLAG_MUTE_HAPTIC:
+            return media::AudioFlag::MUTE_HAPTIC;
+        case AUDIO_FLAG_NO_SYSTEM_CAPTURE:
+            return media::AudioFlag::NO_SYSTEM_CAPTURE;
+        case AUDIO_FLAG_CAPTURE_PRIVATE:
+            return media::AudioFlag::CAPTURE_PRIVATE;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<audio_flags_mask_t>
+aidl2legacy_int32_t_audio_flags_mask_t_mask(int32_t aidl) {
+    return convertBitmask<audio_flags_mask_t, int32_t, audio_flags_mask_t, media::AudioFlag>(
+            aidl, aidl2legacy_AudioFlag_audio_flags_mask_t, index2enum_index<media::AudioFlag>,
+            enumToMask_bitmask<audio_flags_mask_t, audio_flags_mask_t>);
+}
+
+ConversionResult<int32_t>
+legacy2aidl_audio_flags_mask_t_int32_t_mask(audio_flags_mask_t legacy) {
+    return convertBitmask<int32_t, audio_flags_mask_t, media::AudioFlag, audio_flags_mask_t>(
+            legacy, legacy2aidl_audio_flags_mask_t_AudioFlag, index2enum_bitmask<audio_flags_mask_t>,
+            enumToMask_index<int32_t, media::AudioFlag>);
+}
+
+ConversionResult<audio_attributes_t>
+aidl2legacy_AudioAttributesInternal_audio_attributes_t(const media::AudioAttributesInternal& aidl) {
+    audio_attributes_t legacy;
+    legacy.content_type = VALUE_OR_RETURN(
+            aidl2legacy_AudioContentType_audio_content_type_t(aidl.contentType));
+    legacy.usage = VALUE_OR_RETURN(aidl2legacy_AudioUsage_audio_usage_t(aidl.usage));
+    legacy.source = VALUE_OR_RETURN(aidl2legacy_AudioSourceType_audio_source_t(aidl.source));
+    legacy.flags = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_flags_mask_t_mask(aidl.flags));
+    RETURN_IF_ERROR(aidl2legacy_string(aidl.tags, legacy.tags, sizeof(legacy.tags)));
+    return legacy;
+}
+
+ConversionResult<media::AudioAttributesInternal>
+legacy2aidl_audio_attributes_t_AudioAttributesInternal(const audio_attributes_t& legacy) {
+    media::AudioAttributesInternal aidl;
+    aidl.contentType = VALUE_OR_RETURN(
+            legacy2aidl_audio_content_type_t_AudioContentType(legacy.content_type));
+    aidl.usage = VALUE_OR_RETURN(legacy2aidl_audio_usage_t_AudioUsage(legacy.usage));
+    aidl.source = VALUE_OR_RETURN(legacy2aidl_audio_source_t_AudioSourceType(legacy.source));
+    aidl.flags = VALUE_OR_RETURN(legacy2aidl_audio_flags_mask_t_int32_t_mask(legacy.flags));
+    aidl.tags = VALUE_OR_RETURN(legacy2aidl_string(legacy.tags, sizeof(legacy.tags)));
+    return aidl;
+}
+
+ConversionResult<audio_encapsulation_mode_t>
+aidl2legacy_audio_encapsulation_mode_t_AudioEncapsulationMode(media::AudioEncapsulationMode aidl) {
+    switch (aidl) {
+        case media::AudioEncapsulationMode::NONE:
+            return AUDIO_ENCAPSULATION_MODE_NONE;
+        case media::AudioEncapsulationMode::ELEMENTARY_STREAM:
+            return AUDIO_ENCAPSULATION_MODE_ELEMENTARY_STREAM;
+        case media::AudioEncapsulationMode::HANDLE:
+            return AUDIO_ENCAPSULATION_MODE_HANDLE;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<media::AudioEncapsulationMode>
+legacy2aidl_AudioEncapsulationMode_audio_encapsulation_mode_t(audio_encapsulation_mode_t legacy) {
+    switch (legacy) {
+        case AUDIO_ENCAPSULATION_MODE_NONE:
+            return media::AudioEncapsulationMode::NONE;
+        case AUDIO_ENCAPSULATION_MODE_ELEMENTARY_STREAM:
+            return media::AudioEncapsulationMode::ELEMENTARY_STREAM;
+        case AUDIO_ENCAPSULATION_MODE_HANDLE:
+            return media::AudioEncapsulationMode::HANDLE;
+    }
+    return unexpected(BAD_VALUE);
+}
+
+ConversionResult<audio_offload_info_t>
+aidl2legacy_AudioOffloadInfo_audio_offload_info_t(const media::AudioOffloadInfo& aidl) {
+    audio_offload_info_t legacy;
+    legacy.version = VALUE_OR_RETURN(convertIntegral<uint16_t>(aidl.version));
+    legacy.size = sizeof(audio_offload_info_t);
+    audio_config_base_t config = VALUE_OR_RETURN(
+            aidl2legacy_AudioConfigBase_audio_config_base_t(aidl.config));
+    legacy.sample_rate = config.sample_rate;
+    legacy.channel_mask = config.channel_mask;
+    legacy.format = config.format;
+    legacy.stream_type = VALUE_OR_RETURN(
+            aidl2legacy_AudioStreamType_audio_stream_type_t(aidl.streamType));
+    legacy.bit_rate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.bitRate));
+    legacy.duration_us = VALUE_OR_RETURN(convertIntegral<int64_t>(aidl.durationUs));
+    legacy.has_video = aidl.hasVideo;
+    legacy.is_streaming = aidl.isStreaming;
+    legacy.bit_width = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.bitWidth));
+    legacy.offload_buffer_size = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.offloadBufferSize));
+    legacy.usage = VALUE_OR_RETURN(aidl2legacy_AudioUsage_audio_usage_t(aidl.usage));
+    legacy.encapsulation_mode = VALUE_OR_RETURN(
+            aidl2legacy_audio_encapsulation_mode_t_AudioEncapsulationMode(aidl.encapsulationMode));
+    legacy.content_id = VALUE_OR_RETURN(convertReinterpret<int32_t>(aidl.contentId));
+    legacy.sync_id = VALUE_OR_RETURN(convertReinterpret<int32_t>(aidl.syncId));
+    return legacy;
+}
+
+ConversionResult<media::AudioOffloadInfo>
+legacy2aidl_audio_offload_info_t_AudioOffloadInfo(const audio_offload_info_t& legacy) {
+    media::AudioOffloadInfo aidl;
+    // Version 0.1 fields.
+    if (legacy.size < offsetof(audio_offload_info_t, usage) + sizeof(audio_offload_info_t::usage)) {
+        return unexpected(BAD_VALUE);
+    }
+    aidl.version = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.version));
+    aidl.config.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
+    aidl.config.channelMask = VALUE_OR_RETURN(
+            legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+    aidl.config.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
+    aidl.streamType = VALUE_OR_RETURN(
+            legacy2aidl_audio_stream_type_t_AudioStreamType(legacy.stream_type));
+    aidl.bitRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.bit_rate));
+    aidl.durationUs = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy.duration_us));
+    aidl.hasVideo = legacy.has_video;
+    aidl.isStreaming = legacy.is_streaming;
+    aidl.bitWidth = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.bit_width));
+    aidl.offloadBufferSize = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.offload_buffer_size));
+    aidl.usage = VALUE_OR_RETURN(legacy2aidl_audio_usage_t_AudioUsage(legacy.usage));
+
+    // Version 0.2 fields.
+    if (legacy.version >= AUDIO_OFFLOAD_INFO_VERSION_0_2) {
+        if (legacy.size <
+            offsetof(audio_offload_info_t, sync_id) + sizeof(audio_offload_info_t::sync_id)) {
+            return unexpected(BAD_VALUE);
+        }
+        aidl.encapsulationMode = VALUE_OR_RETURN(
+                legacy2aidl_AudioEncapsulationMode_audio_encapsulation_mode_t(
+                        legacy.encapsulation_mode));
+        aidl.contentId = VALUE_OR_RETURN(convertReinterpret<int32_t>(legacy.content_id));
+        aidl.syncId = VALUE_OR_RETURN(convertReinterpret<int32_t>(legacy.sync_id));
+    }
+    return aidl;
+}
+
+ConversionResult<audio_config_t>
+aidl2legacy_AudioConfig_audio_config_t(const media::AudioConfig& aidl) {
+    audio_config_t legacy;
+    legacy.sample_rate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sampleRate));
+    legacy.channel_mask = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+    legacy.format = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(aidl.format));
+    legacy.offload_info = VALUE_OR_RETURN(aidl2legacy_AudioOffloadInfo_audio_offload_info_t(aidl.offloadInfo));
+    legacy.frame_count = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.frameCount));
+    return legacy;
+}
+
+ConversionResult<media::AudioConfig>
+legacy2aidl_audio_config_t_AudioConfig(const audio_config_t& legacy) {
+    media::AudioConfig aidl;
+    aidl.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
+    aidl.channelMask = VALUE_OR_RETURN(legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+    aidl.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
+    aidl.offloadInfo = VALUE_OR_RETURN(legacy2aidl_audio_offload_info_t_AudioOffloadInfo(legacy.offload_info));
+    aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(legacy.frame_count));
+    return aidl;
+}
+
+ConversionResult<audio_config_base_t>
+aidl2legacy_AudioConfigBase_audio_config_base_t(const media::AudioConfigBase& aidl) {
+    audio_config_base_t legacy;
+    legacy.sample_rate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sampleRate));
+    legacy.channel_mask = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_channel_mask_t(aidl.channelMask));
+    legacy.format = VALUE_OR_RETURN(aidl2legacy_AudioFormat_audio_format_t(aidl.format));
+    return legacy;
+}
+
+ConversionResult<media::AudioConfigBase>
+legacy2aidl_audio_config_base_t_AudioConfigBase(const audio_config_base_t& legacy) {
+    media::AudioConfigBase aidl;
+    aidl.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(legacy.sample_rate));
+    aidl.channelMask = VALUE_OR_RETURN(legacy2aidl_audio_channel_mask_t_int32_t(legacy.channel_mask));
+    aidl.format = VALUE_OR_RETURN(legacy2aidl_audio_format_t_AudioFormat(legacy.format));
+    return aidl;
+}
+
+ConversionResult<sp<IMemory>>
+aidl2legacy_SharedFileRegion_IMemory(const media::SharedFileRegion& aidl) {
+    sp<IMemory> legacy;
+    if (!convertSharedFileRegionToIMemory(aidl, &legacy)) {
+        return unexpected(BAD_VALUE);
+    }
+    return legacy;
+}
+
+ConversionResult<media::SharedFileRegion>
+legacy2aidl_IMemory_SharedFileRegion(const sp<IMemory>& legacy) {
+    media::SharedFileRegion aidl;
+    if (!convertIMemoryToSharedFileRegion(legacy, &aidl)) {
+        return unexpected(BAD_VALUE);
+    }
+    return aidl;
+}
+
+ConversionResult<sp<IMemory>>
+aidl2legacy_NullableSharedFileRegion_IMemory(const std::optional<media::SharedFileRegion>& aidl) {
+    sp<IMemory> legacy;
+    if (!convertNullableSharedFileRegionToIMemory(aidl, &legacy)) {
+        return unexpected(BAD_VALUE);
+    }
+    return legacy;
+}
+
+ConversionResult<std::optional<media::SharedFileRegion>>
+legacy2aidl_NullableIMemory_SharedFileRegion(const sp<IMemory>& legacy) {
+    std::optional<media::SharedFileRegion> aidl;
+    if (!convertNullableIMemoryToSharedFileRegion(legacy, &aidl)) {
+        return unexpected(BAD_VALUE);
+    }
+    return aidl;
+}
+
 }  // namespace android
diff --git a/media/libaudioclient/Android.bp b/media/libaudioclient/Android.bp
index fef0ca9..6881f42 100644
--- a/media/libaudioclient/Android.bp
+++ b/media/libaudioclient/Android.bp
@@ -71,7 +71,6 @@
         // AIDL files for audioclient interfaces
         // The headers for these interfaces will be available to any modules that
         // include libaudioclient, at the path "aidl/package/path/BnFoo.h"
-        ":libaudioclient_aidl_callback",
         ":libaudioclient_aidl_private",
         ":libaudioclient_aidl",
 
@@ -90,6 +89,7 @@
         "TrackPlayerBase.cpp",
     ],
     shared_libs: [
+        "audioclient-types-aidl-unstable-cpp",
         "audioflinger-aidl-unstable-cpp",
         "capture_state_listener-aidl-cpp",
         "libaudioclient_aidl_conversion",
@@ -159,11 +159,16 @@
     shared_libs: [
         "audioclient-types-aidl-unstable-cpp",
         "libbase",
+        "libbinder",
         "liblog",
+        "libshmemcompat",
         "libutils",
+        "shared-file-region-aidl-unstable-cpp",
     ],
     export_shared_lib_headers: [
         "audioclient-types-aidl-unstable-cpp",
+        "libbase",
+        "shared-file-region-aidl-unstable-cpp",
     ],
     cflags: [
         "-Wall",
@@ -197,15 +202,6 @@
     path: "aidl",
 }
 
-// AIDL interface for audio track callback
-filegroup {
-    name: "libaudioclient_aidl_callback",
-    srcs: [
-        "aidl/android/media/IAudioTrackCallback.aidl",
-    ],
-    path: "aidl",
-}
-
 aidl_interface {
     name: "capture_state_listener-aidl",
     unstable: true,
@@ -236,12 +232,20 @@
     double_loadable: true,
     local_include_dir: "aidl",
     srcs: [
+        "aidl/android/media/AudioAttributesInternal.aidl",
+        "aidl/android/media/AudioClient.aidl",
+        "aidl/android/media/AudioConfig.aidl",
+        "aidl/android/media/AudioConfigBase.aidl",
+        "aidl/android/media/AudioContentType.aidl",
+        "aidl/android/media/AudioEncapsulationMode.aidl",
+        "aidl/android/media/AudioFlag.aidl",
         "aidl/android/media/AudioGainConfig.aidl",
         "aidl/android/media/AudioGainMode.aidl",
         "aidl/android/media/AudioInputFlags.aidl",
         "aidl/android/media/AudioIoConfigEvent.aidl",
         "aidl/android/media/AudioIoDescriptor.aidl",
         "aidl/android/media/AudioIoFlags.aidl",
+        "aidl/android/media/AudioOffloadInfo.aidl",
         "aidl/android/media/AudioOutputFlags.aidl",
         "aidl/android/media/AudioPatch.aidl",
         "aidl/android/media/AudioPortConfig.aidl",
@@ -253,9 +257,9 @@
         "aidl/android/media/AudioPortConfigSessionExt.aidl",
         "aidl/android/media/AudioPortRole.aidl",
         "aidl/android/media/AudioPortType.aidl",
-        "aidl/android/media/AudioSessionType.aidl",
         "aidl/android/media/AudioSourceType.aidl",
         "aidl/android/media/AudioStreamType.aidl",
+        "aidl/android/media/AudioUsage.aidl",
     ],
     imports: [
         "audio_common-aidl",
@@ -269,10 +273,17 @@
     host_supported: true,
     vendor_available: true,
     srcs: [
+        "aidl/android/media/CreateRecordRequest.aidl",
+        "aidl/android/media/CreateRecordResponse.aidl",
+        "aidl/android/media/CreateTrackRequest.aidl",
+        "aidl/android/media/CreateTrackResponse.aidl",
+
         "aidl/android/media/IAudioFlingerClient.aidl",
+        "aidl/android/media/IAudioTrackCallback.aidl",
     ],
     imports: [
         "audioclient-types-aidl",
+        "shared-file-region-aidl",
     ],
     double_loadable: true,
     backend: {
diff --git a/media/libaudioclient/AudioRecord.cpp b/media/libaudioclient/AudioRecord.cpp
index 55b836f..4d9fbb0 100644
--- a/media/libaudioclient/AudioRecord.cpp
+++ b/media/libaudioclient/AudioRecord.cpp
@@ -35,6 +35,15 @@
 #include <media/MediaMetricsItem.h>
 #include <media/TypeConverter.h>
 
+#define VALUE_OR_FATAL(result)                   \
+    ({                                           \
+       auto _tmp = (result);                     \
+       LOG_ALWAYS_FATAL_IF(!_tmp.ok(),           \
+                           "Failed result (%d)", \
+                           _tmp.error());        \
+       std::move(_tmp.value());                  \
+     })
+
 #define WAIT_PERIOD_MS          10
 
 namespace android {
@@ -807,7 +816,9 @@
     originalSessionId = mSessionId;
 
     do {
-        record = audioFlinger->createRecord(input, output, &status);
+        media::CreateRecordResponse response;
+        record = audioFlinger->createRecord(VALUE_OR_FATAL(input.toAidl()), response, &status);
+        output = VALUE_OR_FATAL(IAudioFlinger::CreateRecordOutput::fromAidl(response));
         if (status == NO_ERROR) {
             break;
         }
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 0507879..8a91e3b 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -33,7 +33,7 @@
 
 #include <system/audio.h>
 
-#define VALUE_OR_RETURN(x) \
+#define VALUE_OR_RETURN_STATUS(x) \
     ({ auto _tmp = (x); \
        if (!_tmp.ok()) return Status::fromStatusT(_tmp.error()); \
        _tmp.value(); })
@@ -532,10 +532,10 @@
 Status AudioSystem::AudioFlingerClient::ioConfigChanged(
         media::AudioIoConfigEvent _event,
         const media::AudioIoDescriptor& _ioDesc) {
-    audio_io_config_event event = VALUE_OR_RETURN(
+    audio_io_config_event event = VALUE_OR_RETURN_STATUS(
             aidl2legacy_AudioIoConfigEvent_audio_io_config_event(_event));
     sp<AudioIoDescriptor> ioDesc(
-            VALUE_OR_RETURN(aidl2legacy_AudioIoDescriptor_AudioIoDescriptor(_ioDesc)));
+            VALUE_OR_RETURN_STATUS(aidl2legacy_AudioIoDescriptor_AudioIoDescriptor(_ioDesc)));
 
     ALOGV("ioConfigChanged() event %d", event);
 
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index 20feec0..14950a8 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -38,6 +38,15 @@
 #include <media/MediaMetricsItem.h>
 #include <media/TypeConverter.h>
 
+#define VALUE_OR_FATAL(result)                   \
+    ({                                           \
+       auto _tmp = (result);                     \
+       LOG_ALWAYS_FATAL_IF(!_tmp.ok(),           \
+                           "Failed result (%d)", \
+                           _tmp.error());        \
+       std::move(_tmp.value());                  \
+     })
+
 #define WAIT_PERIOD_MS                  10
 #define WAIT_STREAM_END_TIMEOUT_SEC     120
 static const int kMaxLoopCountNotifications = 32;
@@ -1597,11 +1606,13 @@
     input.audioTrackCallback = mAudioTrackCallback;
     input.opPackageName = mOpPackageName;
 
-    IAudioFlinger::CreateTrackOutput output;
-
-    sp<IAudioTrack> track = audioFlinger->createTrack(input,
-                                                      output,
+    media::CreateTrackResponse response;
+    sp<IAudioTrack> track = audioFlinger->createTrack(VALUE_OR_FATAL(input.toAidl()),
+                                                      response,
                                                       &status);
+    IAudioFlinger::CreateTrackOutput output = VALUE_OR_FATAL(
+            IAudioFlinger::CreateTrackOutput::fromAidl(
+                    response));
 
     if (status != NO_ERROR || output.outputId == AUDIO_IO_HANDLE_NONE) {
         ALOGE("%s(%d): AudioFlinger could not create track, status: %d output %d",
diff --git a/media/libaudioclient/IAudioFlinger.cpp b/media/libaudioclient/IAudioFlinger.cpp
index d86182e..57142b0 100644
--- a/media/libaudioclient/IAudioFlinger.cpp
+++ b/media/libaudioclient/IAudioFlinger.cpp
@@ -97,6 +97,156 @@
 
 #define MAX_ITEMS_PER_LIST 1024
 
+ConversionResult<media::CreateTrackRequest> IAudioFlinger::CreateTrackInput::toAidl() const {
+    media::CreateTrackRequest aidl;
+    aidl.attr = VALUE_OR_RETURN(legacy2aidl_audio_attributes_t_AudioAttributesInternal(attr));
+    aidl.config = VALUE_OR_RETURN(legacy2aidl_audio_config_t_AudioConfig(config));
+    aidl.clientInfo = VALUE_OR_RETURN(legacy2aidl_AudioClient(clientInfo));
+    aidl.sharedBuffer = VALUE_OR_RETURN(legacy2aidl_NullableIMemory_SharedFileRegion(sharedBuffer));
+    aidl.notificationsPerBuffer = VALUE_OR_RETURN(convertIntegral<int32_t>(notificationsPerBuffer));
+    aidl.speed = speed;
+    aidl.audioTrackCallback = audioTrackCallback;
+    aidl.opPackageName = opPackageName;
+    aidl.flags = VALUE_OR_RETURN(legacy2aidl_audio_output_flags_mask(flags));
+    aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(frameCount));
+    aidl.notificationFrameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(notificationFrameCount));
+    aidl.selectedDeviceId = VALUE_OR_RETURN(
+            legacy2aidl_audio_port_handle_t_int32_t(selectedDeviceId));
+    aidl.sessionId = VALUE_OR_RETURN(legacy2aidl_audio_session_t_int32_t(sessionId));
+    return aidl;
+}
+
+ConversionResult<IAudioFlinger::CreateTrackInput>
+IAudioFlinger::CreateTrackInput::fromAidl(const media::CreateTrackRequest& aidl) {
+    IAudioFlinger::CreateTrackInput legacy;
+    legacy.attr = VALUE_OR_RETURN(aidl2legacy_AudioAttributesInternal_audio_attributes_t(aidl.attr));
+    legacy.config = VALUE_OR_RETURN(aidl2legacy_AudioConfig_audio_config_t(aidl.config));
+    legacy.clientInfo = VALUE_OR_RETURN(aidl2legacy_AudioClient(aidl.clientInfo));
+    legacy.sharedBuffer = VALUE_OR_RETURN(aidl2legacy_NullableSharedFileRegion_IMemory(aidl.sharedBuffer));
+    legacy.notificationsPerBuffer = VALUE_OR_RETURN(
+            convertIntegral<uint32_t>(aidl.notificationsPerBuffer));
+    legacy.speed = aidl.speed;
+    legacy.audioTrackCallback = aidl.audioTrackCallback;
+    legacy.opPackageName = aidl.opPackageName;
+    legacy.flags = VALUE_OR_RETURN(aidl2legacy_audio_output_flags_mask(aidl.flags));
+    legacy.frameCount = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCount));
+    legacy.notificationFrameCount = VALUE_OR_RETURN(
+            convertIntegral<size_t>(aidl.notificationFrameCount));
+    legacy.selectedDeviceId = VALUE_OR_RETURN(
+            aidl2legacy_int32_t_audio_port_handle_t(aidl.selectedDeviceId));
+    legacy.sessionId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl.sessionId));
+    return legacy;
+}
+
+ConversionResult<media::CreateTrackResponse>
+IAudioFlinger::CreateTrackOutput::toAidl() const {
+    media::CreateTrackResponse aidl;
+    aidl.flags = VALUE_OR_RETURN(legacy2aidl_audio_output_flags_mask(flags));
+    aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(frameCount));
+    aidl.notificationFrameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(notificationFrameCount));
+    aidl.selectedDeviceId = VALUE_OR_RETURN(
+            legacy2aidl_audio_port_handle_t_int32_t(selectedDeviceId));
+    aidl.sessionId = VALUE_OR_RETURN(legacy2aidl_audio_session_t_int32_t(sessionId));
+    aidl.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(sampleRate));
+    aidl.afFrameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(afFrameCount));
+    aidl.afSampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(afSampleRate));
+    aidl.afLatencyMs = VALUE_OR_RETURN(convertIntegral<int32_t>(afLatencyMs));
+    aidl.outputId = VALUE_OR_RETURN(legacy2aidl_audio_io_handle_t_int32_t(outputId));
+    aidl.portId = VALUE_OR_RETURN(legacy2aidl_audio_port_handle_t_int32_t(portId));
+    return aidl;
+}
+
+ConversionResult<IAudioFlinger::CreateTrackOutput>
+IAudioFlinger::CreateTrackOutput::fromAidl(
+        const media::CreateTrackResponse& aidl) {
+    IAudioFlinger::CreateTrackOutput legacy;
+    legacy.flags = VALUE_OR_RETURN(aidl2legacy_audio_output_flags_mask(aidl.flags));
+    legacy.frameCount = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCount));
+    legacy.notificationFrameCount = VALUE_OR_RETURN(
+            convertIntegral<size_t>(aidl.notificationFrameCount));
+    legacy.selectedDeviceId = VALUE_OR_RETURN(
+            aidl2legacy_int32_t_audio_port_handle_t(aidl.selectedDeviceId));
+    legacy.sessionId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl.sessionId));
+    legacy.sampleRate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sampleRate));
+    legacy.afFrameCount = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.afFrameCount));
+    legacy.afSampleRate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.afSampleRate));
+    legacy.afLatencyMs = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.afLatencyMs));
+    legacy.outputId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_io_handle_t(aidl.outputId));
+    legacy.portId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_port_handle_t(aidl.portId));
+    return legacy;
+}
+
+ConversionResult<media::CreateRecordRequest>
+IAudioFlinger::CreateRecordInput::toAidl() const {
+    media::CreateRecordRequest aidl;
+    aidl.attr = VALUE_OR_RETURN(legacy2aidl_audio_attributes_t_AudioAttributesInternal(attr));
+    aidl.config = VALUE_OR_RETURN(legacy2aidl_audio_config_base_t_AudioConfigBase(config));
+    aidl.clientInfo = VALUE_OR_RETURN(legacy2aidl_AudioClient(clientInfo));
+    aidl.opPackageName = VALUE_OR_RETURN(legacy2aidl_String16_string(opPackageName));
+    aidl.riid = VALUE_OR_RETURN(legacy2aidl_audio_unique_id_t_int32_t(riid));
+    aidl.flags = VALUE_OR_RETURN(legacy2aidl_audio_input_flags_mask(flags));
+    aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(frameCount));
+    aidl.notificationFrameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(notificationFrameCount));
+    aidl.selectedDeviceId = VALUE_OR_RETURN(
+            legacy2aidl_audio_port_handle_t_int32_t(selectedDeviceId));
+    aidl.sessionId = VALUE_OR_RETURN(legacy2aidl_audio_session_t_int32_t(sessionId));
+    return aidl;
+}
+
+ConversionResult<IAudioFlinger::CreateRecordInput>
+IAudioFlinger::CreateRecordInput::fromAidl(
+        const media::CreateRecordRequest& aidl) {
+    IAudioFlinger::CreateRecordInput legacy;
+    legacy.attr = VALUE_OR_RETURN(aidl2legacy_AudioAttributesInternal_audio_attributes_t(aidl.attr));
+    legacy.config = VALUE_OR_RETURN(aidl2legacy_AudioConfigBase_audio_config_base_t(aidl.config));
+    legacy.clientInfo = VALUE_OR_RETURN(aidl2legacy_AudioClient(aidl.clientInfo));
+    legacy.opPackageName = VALUE_OR_RETURN(aidl2legacy_string_view_String16(aidl.opPackageName));
+    legacy.riid = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_unique_id_t(aidl.riid));
+    legacy.flags = VALUE_OR_RETURN(aidl2legacy_audio_input_flags_mask(aidl.flags));
+    legacy.frameCount = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCount));
+    legacy.notificationFrameCount = VALUE_OR_RETURN(
+            convertIntegral<size_t>(aidl.notificationFrameCount));
+    legacy.selectedDeviceId = VALUE_OR_RETURN(
+            aidl2legacy_int32_t_audio_port_handle_t(aidl.selectedDeviceId));
+    legacy.sessionId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl.sessionId));
+    return legacy;
+}
+
+ConversionResult<media::CreateRecordResponse>
+IAudioFlinger::CreateRecordOutput::toAidl() const {
+    media::CreateRecordResponse aidl;
+    aidl.flags = VALUE_OR_RETURN(legacy2aidl_audio_input_flags_mask(flags));
+    aidl.frameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(frameCount));
+    aidl.notificationFrameCount = VALUE_OR_RETURN(convertIntegral<int64_t>(notificationFrameCount));
+    aidl.selectedDeviceId = VALUE_OR_RETURN(
+            legacy2aidl_audio_port_handle_t_int32_t(selectedDeviceId));
+    aidl.sessionId = VALUE_OR_RETURN(legacy2aidl_audio_session_t_int32_t(sessionId));
+    aidl.sampleRate = VALUE_OR_RETURN(convertIntegral<int32_t>(sampleRate));
+    aidl.inputId = VALUE_OR_RETURN(legacy2aidl_audio_io_handle_t_int32_t(inputId));
+    aidl.cblk = VALUE_OR_RETURN(legacy2aidl_NullableIMemory_SharedFileRegion(cblk));
+    aidl.buffers = VALUE_OR_RETURN(legacy2aidl_NullableIMemory_SharedFileRegion(buffers));
+    aidl.portId = VALUE_OR_RETURN(legacy2aidl_audio_port_handle_t_int32_t(portId));
+    return aidl;
+}
+
+ConversionResult<IAudioFlinger::CreateRecordOutput>
+IAudioFlinger::CreateRecordOutput::fromAidl(
+        const media::CreateRecordResponse& aidl) {
+    IAudioFlinger::CreateRecordOutput legacy;
+    legacy.flags = VALUE_OR_RETURN(aidl2legacy_audio_input_flags_mask(aidl.flags));
+    legacy.frameCount = VALUE_OR_RETURN(convertIntegral<size_t>(aidl.frameCount));
+    legacy.notificationFrameCount = VALUE_OR_RETURN(
+            convertIntegral<size_t>(aidl.notificationFrameCount));
+    legacy.selectedDeviceId = VALUE_OR_RETURN(
+            aidl2legacy_int32_t_audio_port_handle_t(aidl.selectedDeviceId));
+    legacy.sessionId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_session_t(aidl.sessionId));
+    legacy.sampleRate = VALUE_OR_RETURN(convertIntegral<uint32_t>(aidl.sampleRate));
+    legacy.inputId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_io_handle_t(aidl.inputId));
+    legacy.cblk = VALUE_OR_RETURN(aidl2legacy_NullableSharedFileRegion_IMemory(aidl.cblk));
+    legacy.buffers = VALUE_OR_RETURN(aidl2legacy_NullableSharedFileRegion_IMemory(aidl.buffers));
+    legacy.portId = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_port_handle_t(aidl.portId));
+    return legacy;
+}
 
 class BpAudioFlinger : public BpInterface<IAudioFlinger>
 {
@@ -106,9 +256,9 @@
     {
     }
 
-    virtual sp<IAudioTrack> createTrack(const CreateTrackInput& input,
-                                        CreateTrackOutput& output,
-                                        status_t *status)
+    virtual sp<IAudioTrack> createTrack(const media::CreateTrackRequest& input,
+                                        media::CreateTrackResponse& output,
+                                        status_t* status)
     {
         Parcel data, reply;
         sp<IAudioTrack> track;
@@ -118,7 +268,7 @@
             return track;
         }
 
-        input.writeToParcel(&data);
+        data.writeParcelable(input);
 
         status_t lStatus = remote()->transact(CREATE_TRACK, data, &reply);
         if (lStatus != NO_ERROR) {
@@ -141,9 +291,9 @@
         return track;
     }
 
-    virtual sp<media::IAudioRecord> createRecord(const CreateRecordInput& input,
-                                                 CreateRecordOutput& output,
-                                                 status_t *status)
+    virtual sp<media::IAudioRecord> createRecord(const media::CreateRecordRequest& input,
+                                                 media::CreateRecordResponse& output,
+                                                 status_t* status)
     {
         Parcel data, reply;
         sp<media::IAudioRecord> record;
@@ -153,7 +303,7 @@
             return record;
         }
 
-        input.writeToParcel(&data);
+        data.writeParcelable(input);
 
         status_t lStatus = remote()->transact(CREATE_RECORD, data, &reply);
         if (lStatus != NO_ERROR) {
@@ -1040,14 +1190,14 @@
         case CREATE_TRACK: {
             CHECK_INTERFACE(IAudioFlinger, data, reply);
 
-            CreateTrackInput input;
-            if (input.readFromParcel((Parcel*)&data) != NO_ERROR) {
+            media::CreateTrackRequest input;
+            if (data.readParcelable(&input) != NO_ERROR) {
                 reply->writeInt32(DEAD_OBJECT);
                 return NO_ERROR;
             }
 
             status_t status;
-            CreateTrackOutput output;
+            media::CreateTrackResponse output;
 
             sp<IAudioTrack> track= createTrack(input,
                                                output,
@@ -1065,14 +1215,14 @@
         case CREATE_RECORD: {
             CHECK_INTERFACE(IAudioFlinger, data, reply);
 
-            CreateRecordInput input;
-            if (input.readFromParcel((Parcel*)&data) != NO_ERROR) {
+            media::CreateRecordRequest input;
+            if (data.readParcelable(&input) != NO_ERROR) {
                 reply->writeInt32(DEAD_OBJECT);
                 return NO_ERROR;
             }
 
             status_t status;
-            CreateRecordOutput output;
+            media::CreateRecordResponse output;
 
             sp<media::IAudioRecord> record = createRecord(input,
                                                           output,
diff --git a/media/libaudioclient/aidl/android/media/AudioAttributesInternal.aidl b/media/libaudioclient/aidl/android/media/AudioAttributesInternal.aidl
new file mode 100644
index 0000000..699df0a
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioAttributesInternal.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.media;
+
+import android.media.AudioContentType;
+import android.media.AudioSourceType;
+import android.media.AudioUsage;
+
+/**
+ * The "Internal" suffix of this type name is to disambiguate it from the
+ * android.media.AudioAttributes SDK type.
+ * {@hide}
+ */
+parcelable AudioAttributesInternal {
+    AudioContentType contentType;
+    AudioUsage usage;
+    AudioSourceType source;
+    // Bitmask, indexed by AudioFlag.
+    int flags;
+    @utf8InCpp String tags; /* UTF8 */
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl b/media/libaudioclient/aidl/android/media/AudioClient.aidl
similarity index 73%
copy from media/libaudioclient/aidl/android/media/AudioSessionType.aidl
copy to media/libaudioclient/aidl/android/media/AudioClient.aidl
index d305c29..7bff0d6 100644
--- a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioClient.aidl
@@ -13,13 +13,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package android.media;
 
-@Backing(type="int")
-enum AudioSessionType {
-    DEVICE = -2,
-    OUTPUT_STAGE = -1,
-    OUTPUT_MIX = 0,
-    ALLOCATE = 0,
-    NONE = 0,
+/**
+ * {@hide}
+ */
+parcelable AudioClient {
+    /** Interpreted as uid_t. */
+    int clientUid;
+    /** Interpreted as pid_t. */
+    int clientPid;
+    /** Interpreted as pid_t. */
+    int clientTid;
+    @utf8InCpp String packageName;
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl b/media/libaudioclient/aidl/android/media/AudioConfig.aidl
similarity index 64%
copy from media/libaudioclient/aidl/android/media/AudioSessionType.aidl
copy to media/libaudioclient/aidl/android/media/AudioConfig.aidl
index d305c29..8dc97d3 100644
--- a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioConfig.aidl
@@ -13,13 +13,23 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package android.media;
 
-@Backing(type="int")
-enum AudioSessionType {
-    DEVICE = -2,
-    OUTPUT_STAGE = -1,
-    OUTPUT_MIX = 0,
-    ALLOCATE = 0,
-    NONE = 0,
+import android.media.AudioOffloadInfo;
+import android.media.audio.common.AudioFormat;
+
+/**
+ * {@hide}
+ */
+parcelable AudioConfig {
+    int sampleRate;
+    /**
+     * Interpreted as audio_channel_mask_t.
+     * TODO(ytai): Create a designated type.
+     */
+    int channelMask;
+    AudioFormat format;
+    AudioOffloadInfo offloadInfo;
+    long frameCount;
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl b/media/libaudioclient/aidl/android/media/AudioConfigBase.aidl
similarity index 75%
copy from media/libaudioclient/aidl/android/media/AudioSessionType.aidl
copy to media/libaudioclient/aidl/android/media/AudioConfigBase.aidl
index d305c29..8353c0d 100644
--- a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioConfigBase.aidl
@@ -13,13 +13,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package android.media;
 
-@Backing(type="int")
-enum AudioSessionType {
-    DEVICE = -2,
-    OUTPUT_STAGE = -1,
-    OUTPUT_MIX = 0,
-    ALLOCATE = 0,
-    NONE = 0,
+import android.media.audio.common.AudioFormat;
+
+/**
+ * {@hide}
+ */
+parcelable AudioConfigBase {
+    int sampleRate;
+    /** Interpreted as audio_channel_mask_t. */
+    int channelMask;
+    AudioFormat format;
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl b/media/libaudioclient/aidl/android/media/AudioContentType.aidl
similarity index 85%
rename from media/libaudioclient/aidl/android/media/AudioSessionType.aidl
rename to media/libaudioclient/aidl/android/media/AudioContentType.aidl
index d305c29..f734fba 100644
--- a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioContentType.aidl
@@ -16,10 +16,10 @@
 package android.media;
 
 @Backing(type="int")
-enum AudioSessionType {
-    DEVICE = -2,
-    OUTPUT_STAGE = -1,
-    OUTPUT_MIX = 0,
-    ALLOCATE = 0,
-    NONE = 0,
+enum AudioContentType {
+    UNKNOWN = 0,
+    SPEECH = 1,
+    MUSIC = 2,
+    MOVIE = 3,
+    SONIFICATION = 4,
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl b/media/libaudioclient/aidl/android/media/AudioEncapsulationMode.aidl
similarity index 84%
copy from media/libaudioclient/aidl/android/media/AudioSessionType.aidl
copy to media/libaudioclient/aidl/android/media/AudioEncapsulationMode.aidl
index d305c29..74a6141 100644
--- a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioEncapsulationMode.aidl
@@ -16,10 +16,8 @@
 package android.media;
 
 @Backing(type="int")
-enum AudioSessionType {
-    DEVICE = -2,
-    OUTPUT_STAGE = -1,
-    OUTPUT_MIX = 0,
-    ALLOCATE = 0,
-    NONE = 0,
+enum AudioEncapsulationMode {
+     NONE = 0,
+     ELEMENTARY_STREAM = 1,
+     HANDLE = 2,
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl b/media/libaudioclient/aidl/android/media/AudioFlag.aidl
similarity index 66%
copy from media/libaudioclient/aidl/android/media/AudioSessionType.aidl
copy to media/libaudioclient/aidl/android/media/AudioFlag.aidl
index d305c29..2602fe5 100644
--- a/media/libaudioclient/aidl/android/media/AudioSessionType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioFlag.aidl
@@ -16,10 +16,19 @@
 package android.media;
 
 @Backing(type="int")
-enum AudioSessionType {
-    DEVICE = -2,
-    OUTPUT_STAGE = -1,
-    OUTPUT_MIX = 0,
-    ALLOCATE = 0,
-    NONE = 0,
+enum AudioFlag {
+    AUDIBILITY_ENFORCED = 0,
+    SECURE = 1,
+    SCO = 2,
+    BEACON = 3,
+    HW_AV_SYNC = 4,
+    HW_HOTWORD = 5,
+    BYPASS_INTERRUPTION_POLICY = 6,
+    BYPASS_MUTE = 7,
+    LOW_LATENCY = 8,
+    DEEP_BUFFER = 9,
+    NO_MEDIA_PROJECTION = 10,
+    MUTE_HAPTIC = 11,
+    NO_SYSTEM_CAPTURE = 12,
+    CAPTURE_PRIVATE = 13,
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl b/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl
new file mode 100644
index 0000000..c86b3f0
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioOffloadInfo.aidl
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.media;
+
+import android.media.AudioConfigBase;
+import android.media.AudioEncapsulationMode;
+import android.media.AudioStreamType;
+import android.media.AudioUsage;
+import android.media.audio.common.AudioFormat;
+
+/**
+ * {@hide}
+ */
+parcelable AudioOffloadInfo {
+    /** Version of the info structure. Interpreted as a uint16_t version constant. */
+    int version;
+    /** Audio configuration. */
+    AudioConfigBase config;
+    /** Stream type. */
+    AudioStreamType streamType;
+    /** Bit rate in bits per second. */
+    int bitRate;
+    /** Duration in microseconds, -1 if unknown. */
+    long durationUs;
+    /** true if stream is tied to a video stream. */
+    boolean hasVideo;
+    /** true if streaming, false if local playback. */
+    boolean isStreaming;
+    int bitWidth;
+    /** Offload fragment size. */
+    int offloadBufferSize;
+    AudioUsage usage;
+    AudioEncapsulationMode encapsulationMode;
+    /** Content id from tuner HAL (0 if none). */
+    int contentId;
+    /** Sync id from tuner HAL (0 if none). */
+    int syncId;
+}
diff --git a/media/libaudioclient/aidl/android/media/AudioPortConfigSessionExt.aidl b/media/libaudioclient/aidl/android/media/AudioPortConfigSessionExt.aidl
index d3261d9..a2cbf62 100644
--- a/media/libaudioclient/aidl/android/media/AudioPortConfigSessionExt.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioPortConfigSessionExt.aidl
@@ -16,11 +16,9 @@
 
 package android.media;
 
-import android.media.AudioSessionType;
-
 /**
  * {@hide}
  */
 parcelable AudioPortConfigSessionExt {
-    AudioSessionType session;
+    int session;
 }
diff --git a/media/libaudioclient/aidl/android/media/AudioSourceType.aidl b/media/libaudioclient/aidl/android/media/AudioSourceType.aidl
index f6ecc46..35320f8 100644
--- a/media/libaudioclient/aidl/android/media/AudioSourceType.aidl
+++ b/media/libaudioclient/aidl/android/media/AudioSourceType.aidl
@@ -17,6 +17,7 @@
 
 @Backing(type="int")
 enum AudioSourceType {
+    INVALID = -1,
     DEFAULT = 0,
     MIC = 1,
     VOICE_UPLINK = 2,
diff --git a/media/libaudioclient/aidl/android/media/AudioUsage.aidl b/media/libaudioclient/aidl/android/media/AudioUsage.aidl
new file mode 100644
index 0000000..137e7ff
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/AudioUsage.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+package android.media;
+
+@Backing(type="int")
+enum AudioUsage {
+    UNKNOWN = 0,
+    MEDIA = 1,
+    VOICE_COMMUNICATION = 2,
+    VOICE_COMMUNICATION_SIGNALLING = 3,
+    ALARM = 4,
+    NOTIFICATION = 5,
+    NOTIFICATION_TELEPHONY_RINGTONE = 6,
+    NOTIFICATION_COMMUNICATION_REQUEST = 7,
+    NOTIFICATION_COMMUNICATION_INSTANT = 8,
+    NOTIFICATION_COMMUNICATION_DELAYED = 9,
+    NOTIFICATION_EVENT = 10,
+    ASSISTANCE_ACCESSIBILITY = 11,
+    ASSISTANCE_NAVIGATION_GUIDANCE = 12,
+    ASSISTANCE_SONIFICATION = 13,
+    GAME = 14,
+    VIRTUAL_SOURCE = 15,
+    ASSISTANT = 16,
+    CALL_ASSISTANT = 17,
+    EMERGENCY = 1000,
+    SAFETY = 1001,
+    VEHICLE_STATUS = 1002,
+    ANNOUNCEMENT = 1003,
+}
diff --git a/media/libaudioclient/aidl/android/media/CreateRecordRequest.aidl b/media/libaudioclient/aidl/android/media/CreateRecordRequest.aidl
new file mode 100644
index 0000000..6da743a
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/CreateRecordRequest.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.media;
+
+import android.media.AudioAttributesInternal;
+import android.media.AudioClient;
+import android.media.AudioConfigBase;
+
+/**
+ * CreateRecordRequest contains all input arguments sent by AudioRecord to AudioFlinger
+ * when calling createRecord() including arguments that will be updated by AudioFlinger
+ * and returned in CreateRecordResponse object.
+ *
+ * {@hide}
+ */
+parcelable CreateRecordRequest {
+    AudioAttributesInternal attr;
+    AudioConfigBase config;
+    AudioClient clientInfo;
+    @utf8InCpp String opPackageName;
+    /** Interpreted as audio_unique_id_t. */
+    int riid;
+    /** Bitmask, indexed by AudioInputFlags. */
+    int flags;
+    long frameCount;
+    long notificationFrameCount;
+    /** Interpreted as audio_port_handle_t. */
+    int selectedDeviceId;
+    int sessionId;
+}
diff --git a/media/libaudioclient/aidl/android/media/CreateRecordResponse.aidl b/media/libaudioclient/aidl/android/media/CreateRecordResponse.aidl
new file mode 100644
index 0000000..0c9d7c3
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/CreateRecordResponse.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.media;
+
+import android.media.SharedFileRegion;
+
+/**
+ * CreateRecordResponse contains all output arguments returned by AudioFlinger to AudioRecord
+ * when calling createRecord() including arguments that were passed as I/O for update by
+ * CreateRecordRequest.
+ *
+ * {@hide}
+ */
+parcelable CreateRecordResponse {
+    /** Bitmask, indexed by AudioInputFlags. */
+    int flags;
+    long frameCount;
+    long notificationFrameCount;
+    /** Interpreted as audio_port_handle_t. */
+    int selectedDeviceId;
+    int sessionId;
+    int sampleRate;
+    /** Interpreted as audio_io_handle_t. */
+    int inputId;
+    @nullable SharedFileRegion cblk;
+    @nullable SharedFileRegion buffers;
+    /** Interpreted as audio_port_handle_t. */
+    int portId;
+}
diff --git a/media/libaudioclient/aidl/android/media/CreateTrackRequest.aidl b/media/libaudioclient/aidl/android/media/CreateTrackRequest.aidl
new file mode 100644
index 0000000..014b3ca
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/CreateTrackRequest.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.media;
+
+import android.media.AudioAttributesInternal;
+import android.media.AudioClient;
+import android.media.AudioConfig;
+import android.media.IAudioTrackCallback;
+import android.media.SharedFileRegion;
+
+/**
+ * CreateTrackInput contains all input arguments sent by AudioTrack to AudioFlinger
+ * when calling createTrack() including arguments that will be updated by AudioFlinger
+ * and returned in CreateTrackResponse object.
+ *
+ * {@hide}
+ */
+parcelable CreateTrackRequest {
+    AudioAttributesInternal attr;
+    AudioConfig config;
+    AudioClient clientInfo;
+    @nullable SharedFileRegion sharedBuffer;
+    int notificationsPerBuffer;
+    float speed;
+    IAudioTrackCallback audioTrackCallback;
+    @utf8InCpp String opPackageName;
+    /** Bitmask, indexed by AudioOutputFlags. */
+    int flags;
+    long frameCount;
+    long notificationFrameCount;
+    /** Interpreted as audio_port_handle_t. */
+    int selectedDeviceId;
+    int sessionId;
+}
diff --git a/media/libaudioclient/aidl/android/media/CreateTrackResponse.aidl b/media/libaudioclient/aidl/android/media/CreateTrackResponse.aidl
new file mode 100644
index 0000000..494e63f
--- /dev/null
+++ b/media/libaudioclient/aidl/android/media/CreateTrackResponse.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.media;
+
+/**
+ * CreateTrackOutput contains all output arguments returned by AudioFlinger to AudioTrack
+ * when calling createTrack() including arguments that were passed as I/O for update by
+ * CreateTrackRequest.
+ *
+ * {@hide}
+ */
+parcelable CreateTrackResponse {
+    /** Bitmask, indexed by AudioOutputFlags. */
+    int flags;
+    long frameCount;
+    long notificationFrameCount;
+    /** Interpreted as audio_port_handle_t. */
+    int selectedDeviceId;
+    int sessionId;
+    int sampleRate;
+    long afFrameCount;
+    int afSampleRate;
+    int afLatencyMs;
+    /** Interpreted as audio_io_handle_t. */
+    int outputId;
+    /** Interpreted as audio_port_handle_t. */
+    int portId;
+}
diff --git a/media/libaudioclient/include/media/AidlConversion.h b/media/libaudioclient/include/media/AidlConversion.h
index e524710..4df8083 100644
--- a/media/libaudioclient/include/media/AidlConversion.h
+++ b/media/libaudioclient/include/media/AidlConversion.h
@@ -21,7 +21,13 @@
 
 #include <system/audio.h>
 
-#include <android-base/result.h>
+#include <android-base/expected.h>
+
+#include <android/media/AudioAttributesInternal.h>
+#include <android/media/AudioClient.h>
+#include <android/media/AudioConfig.h>
+#include <android/media/AudioConfigBase.h>
+#include <android/media/AudioFlag.h>
 #include <android/media/AudioGainMode.h>
 #include <android/media/AudioInputFlags.h>
 #include <android/media/AudioIoConfigEvent.h>
@@ -29,6 +35,10 @@
 #include <android/media/AudioOutputFlags.h>
 #include <android/media/AudioPortConfigType.h>
 
+#include <android/media/SharedFileRegion.h>
+
+#include <binder/IMemory.h>
+#include <media/AudioClient.h>
 #include <media/AudioIoDescriptor.h>
 
 namespace android {
@@ -36,6 +46,19 @@
 template <typename T>
 using ConversionResult = base::expected<T, status_t>;
 
+// Convenience macros for working with ConversionResult, useful for writing converted for aggregate
+// types.
+
+#define VALUE_OR_RETURN(result)                                \
+    ({                                                         \
+        auto _tmp = (result);                                  \
+        if (!_tmp.ok()) return base::unexpected(_tmp.error()); \
+        std::move(_tmp.value());                               \
+    })
+
+#define RETURN_IF_ERROR(result) \
+    if (status_t _tmp = (result); _tmp != OK) return base::unexpected(_tmp);
+
 /**
  * A generic template to safely cast between integral types, respecting limits of the destination
  * type.
@@ -77,6 +100,9 @@
 ConversionResult<audio_patch_handle_t> aidl2legacy_int32_t_audio_patch_handle_t(int32_t aidl);
 ConversionResult<int32_t> legacy2aidl_audio_patch_handle_t_int32_t(audio_patch_handle_t legacy);
 
+ConversionResult<audio_unique_id_t> aidl2legacy_int32_t_audio_unique_id_t(int32_t aidl);
+ConversionResult<int32_t> legacy2aidl_audio_unique_id_t_int32_t(audio_unique_id_t legacy);
+
 // The legacy enum is unnamed. Thus, we use int.
 ConversionResult<int> aidl2legacy_AudioPortConfigType(media::AudioPortConfigType aidl);
 // The legacy enum is unnamed. Thus, we use int.
@@ -88,6 +114,15 @@
 ConversionResult<audio_channel_mask_t> aidl2legacy_int32_t_audio_channel_mask_t(int32_t aidl);
 ConversionResult<int32_t> legacy2aidl_audio_channel_mask_t_int32_t(audio_channel_mask_t legacy);
 
+ConversionResult<pid_t> aidl2legacy_int32_t_pid_t(int32_t aidl);
+ConversionResult<int32_t> legacy2aidl_pid_t_int32_t(pid_t legacy);
+
+ConversionResult<uid_t> aidl2legacy_int32_t_uid_t(int32_t aidl);
+ConversionResult<int32_t> legacy2aidl_uid_t_int32_t(uid_t legacy);
+
+ConversionResult<String16> aidl2legacy_string_view_String16(std::string_view aidl);
+ConversionResult<std::string> legacy2aidl_String16_string(const String16& legacy);
+
 ConversionResult<audio_io_config_event> aidl2legacy_AudioIoConfigEvent_audio_io_config_event(
         media::AudioIoConfigEvent aidl);
 ConversionResult<media::AudioIoConfigEvent> legacy2aidl_audio_io_config_event_AudioIoConfigEvent(
@@ -158,10 +193,8 @@
 ConversionResult<media::AudioSourceType> legacy2aidl_audio_source_t_AudioSourceType(
         audio_source_t legacy);
 
-ConversionResult<audio_session_t> aidl2legacy_AudioSessionType_audio_session_t(
-        media::AudioSessionType aidl);
-ConversionResult<media::AudioSessionType> legacy2aidl_audio_session_t_AudioSessionType(
-        audio_session_t legacy);
+ConversionResult<audio_session_t> aidl2legacy_int32_t_audio_session_t(int32_t aidl);
+ConversionResult<int32_t> legacy2aidl_audio_session_t_int32_t(audio_session_t legacy);
 
 ConversionResult<audio_port_config_mix_ext> aidl2legacy_AudioPortConfigMixExt(
         const media::AudioPortConfigMixExt& aidl, media::AudioPortRole role);
@@ -185,7 +218,66 @@
 
 ConversionResult<sp<AudioIoDescriptor>> aidl2legacy_AudioIoDescriptor_AudioIoDescriptor(
         const media::AudioIoDescriptor& aidl);
+
 ConversionResult<media::AudioIoDescriptor> legacy2aidl_AudioIoDescriptor_AudioIoDescriptor(
         const sp<AudioIoDescriptor>& legacy);
 
+ConversionResult<AudioClient> aidl2legacy_AudioClient(const media::AudioClient& aidl);
+ConversionResult<media::AudioClient> legacy2aidl_AudioClient(const AudioClient& legacy);
+
+ConversionResult<audio_content_type_t>
+aidl2legacy_AudioContentType_audio_content_type_t(media::AudioContentType aidl);
+ConversionResult<media::AudioContentType>
+legacy2aidl_audio_content_type_t_AudioContentType(audio_content_type_t legacy);
+
+ConversionResult<audio_usage_t>
+aidl2legacy_AudioUsage_audio_usage_t(media::AudioUsage aidl);
+ConversionResult<media::AudioUsage>
+legacy2aidl_audio_usage_t_AudioUsage(audio_usage_t legacy);
+
+ConversionResult<audio_flags_mask_t>
+aidl2legacy_AudioFlag_audio_flags_mask_t(media::AudioFlag aidl);
+ConversionResult<media::AudioFlag>
+legacy2aidl_audio_flags_mask_t_AudioFlag(audio_flags_mask_t legacy);
+
+ConversionResult<audio_flags_mask_t>
+aidl2legacy_int32_t_audio_flags_mask_t_mask(int32_t aidl);
+ConversionResult<int32_t>
+legacy2aidl_audio_flags_mask_t_int32_t_mask(audio_flags_mask_t legacy);
+
+ConversionResult<audio_attributes_t>
+aidl2legacy_AudioAttributesInternal_audio_attributes_t(const media::AudioAttributesInternal& aidl);
+ConversionResult<media::AudioAttributesInternal>
+legacy2aidl_audio_attributes_t_AudioAttributesInternal(const audio_attributes_t& legacy);
+
+ConversionResult<audio_encapsulation_mode_t>
+aidl2legacy_audio_encapsulation_mode_t_AudioEncapsulationMode(media::AudioEncapsulationMode aidl);
+ConversionResult<media::AudioEncapsulationMode>
+legacy2aidl_AudioEncapsulationMode_audio_encapsulation_mode_t(audio_encapsulation_mode_t legacy);
+
+ConversionResult<audio_offload_info_t>
+aidl2legacy_AudioOffloadInfo_audio_offload_info_t(const media::AudioOffloadInfo& aidl);
+ConversionResult<media::AudioOffloadInfo>
+legacy2aidl_audio_offload_info_t_AudioOffloadInfo(const audio_offload_info_t& legacy);
+
+ConversionResult<audio_config_t>
+aidl2legacy_AudioConfig_audio_config_t(const media::AudioConfig& aidl);
+ConversionResult<media::AudioConfig>
+legacy2aidl_audio_config_t_AudioConfig(const audio_config_t& legacy);
+
+ConversionResult<audio_config_base_t>
+aidl2legacy_AudioConfigBase_audio_config_base_t(const media::AudioConfigBase& aidl);
+ConversionResult<media::AudioConfigBase>
+legacy2aidl_audio_config_base_t_AudioConfigBase(const audio_config_base_t& legacy);
+
+ConversionResult<sp<IMemory>>
+aidl2legacy_SharedFileRegion_IMemory(const media::SharedFileRegion& aidl);
+ConversionResult<media::SharedFileRegion>
+legacy2aidl_IMemory_SharedFileRegion(const sp<IMemory>& legacy);
+
+ConversionResult<sp<IMemory>>
+aidl2legacy_NullableSharedFileRegion_IMemory(const std::optional<media::SharedFileRegion>& aidl);
+ConversionResult<std::optional<media::SharedFileRegion>>
+legacy2aidl_NullableIMemory_SharedFileRegion(const sp<IMemory>& legacy);
+
 }  // namespace android
diff --git a/media/libaudioclient/include/media/AudioClient.h b/media/libaudioclient/include/media/AudioClient.h
index 247af9e..0b89d15 100644
--- a/media/libaudioclient/include/media/AudioClient.h
+++ b/media/libaudioclient/include/media/AudioClient.h
@@ -18,14 +18,12 @@
 #ifndef ANDROID_AUDIO_CLIENT_H
 #define ANDROID_AUDIO_CLIENT_H
 
-#include <binder/Parcel.h>
-#include <binder/Parcelable.h>
-#include <system/audio.h>
+#include <sys/types.h>
 #include <utils/String16.h>
 
 namespace android {
 
-class AudioClient : public Parcelable {
+class AudioClient {
  public:
     AudioClient() :
         clientUid(-1), clientPid(-1), clientTid(-1), packageName("") {}
@@ -34,22 +32,6 @@
     pid_t clientPid;
     pid_t clientTid;
     String16 packageName;
-
-    status_t readFromParcel(const Parcel *parcel) override {
-        clientUid = parcel->readInt32();
-        clientPid = parcel->readInt32();
-        clientTid = parcel->readInt32();
-        packageName = parcel->readString16();
-        return NO_ERROR;
-    }
-
-    status_t writeToParcel(Parcel *parcel) const override {
-        parcel->writeInt32(clientUid);
-        parcel->writeInt32(clientPid);
-        parcel->writeInt32(clientTid);
-        parcel->writeString16(packageName);
-        return NO_ERROR;
-    }
 };
 
 }; // namespace android
diff --git a/media/libaudioclient/include/media/IAudioFlinger.h b/media/libaudioclient/include/media/IAudioFlinger.h
index 413db71..3491fda 100644
--- a/media/libaudioclient/include/media/IAudioFlinger.h
+++ b/media/libaudioclient/include/media/IAudioFlinger.h
@@ -26,6 +26,7 @@
 #include <binder/IInterface.h>
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
+#include <media/AidlConversion.h>
 #include <media/AudioClient.h>
 #include <media/DeviceDescriptorBase.h>
 #include <media/IAudioTrack.h>
@@ -37,6 +38,10 @@
 #include <string>
 #include <vector>
 
+#include "android/media/CreateRecordRequest.h"
+#include "android/media/CreateRecordResponse.h"
+#include "android/media/CreateTrackRequest.h"
+#include "android/media/CreateTrackResponse.h"
 #include "android/media/IAudioRecord.h"
 #include "android/media/IAudioFlingerClient.h"
 #include "android/media/IAudioTrackCallback.h"
@@ -56,76 +61,8 @@
      * when calling createTrack() including arguments that will be updated by AudioFlinger
      * and returned in CreateTrackOutput object
      */
-    class CreateTrackInput : public Parcelable {
+    class CreateTrackInput {
     public:
-        status_t readFromParcel(const Parcel *parcel) override {
-            /* input arguments*/
-            memset(&attr, 0, sizeof(audio_attributes_t));
-            if (parcel->read(&attr, sizeof(audio_attributes_t)) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-            attr.tags[AUDIO_ATTRIBUTES_TAGS_MAX_SIZE -1] = '\0';
-            memset(&config, 0, sizeof(audio_config_t));
-            if (parcel->read(&config, sizeof(audio_config_t)) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-            if (clientInfo.readFromParcel(parcel) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-            if (parcel->readInt32() != 0) {
-                // TODO: Using unsecurePointer() has some associated security
-                //       pitfalls (see declaration for details).
-                //       Either document why it is safe in this case or address
-                //       the issue (e.g. by copying).
-                sharedBuffer = interface_cast<IMemory>(parcel->readStrongBinder());
-                if (sharedBuffer == 0 || sharedBuffer->unsecurePointer() == NULL) {
-                    return BAD_VALUE;
-                }
-            }
-            notificationsPerBuffer = parcel->readInt32();
-            speed = parcel->readFloat();
-            audioTrackCallback = interface_cast<media::IAudioTrackCallback>(
-                    parcel->readStrongBinder());
-            const char* opPackageNamePtr = parcel->readCString();
-            if (opPackageNamePtr == nullptr) {
-                return FAILED_TRANSACTION;
-            }
-            opPackageName = opPackageNamePtr;
-
-            /* input/output arguments*/
-            (void)parcel->read(&flags, sizeof(audio_output_flags_t));
-            frameCount = parcel->readInt64();
-            notificationFrameCount = parcel->readInt64();
-            (void)parcel->read(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->read(&sessionId, sizeof(audio_session_t));
-            return NO_ERROR;
-        }
-
-        status_t writeToParcel(Parcel *parcel) const override {
-            /* input arguments*/
-            (void)parcel->write(&attr, sizeof(audio_attributes_t));
-            (void)parcel->write(&config, sizeof(audio_config_t));
-            (void)clientInfo.writeToParcel(parcel);
-            if (sharedBuffer != 0) {
-                (void)parcel->writeInt32(1);
-                (void)parcel->writeStrongBinder(IInterface::asBinder(sharedBuffer));
-            } else {
-                (void)parcel->writeInt32(0);
-            }
-            (void)parcel->writeInt32(notificationsPerBuffer);
-            (void)parcel->writeFloat(speed);
-            (void)parcel->writeStrongBinder(IInterface::asBinder(audioTrackCallback));
-            (void)parcel->writeCString(opPackageName.c_str());
-
-            /* input/output arguments*/
-            (void)parcel->write(&flags, sizeof(audio_output_flags_t));
-            (void)parcel->writeInt64(frameCount);
-            (void)parcel->writeInt64(notificationFrameCount);
-            (void)parcel->write(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->write(&sessionId, sizeof(audio_session_t));
-            return NO_ERROR;
-        }
-
         /* input */
         audio_attributes_t attr;
         audio_config_t config;
@@ -142,50 +79,17 @@
         size_t notificationFrameCount;
         audio_port_handle_t selectedDeviceId;
         audio_session_t sessionId;
+
+        ConversionResult<media::CreateTrackRequest> toAidl() const;
+        static ConversionResult<CreateTrackInput> fromAidl(const media::CreateTrackRequest& aidl);
     };
 
     /* CreateTrackOutput contains all output arguments returned by AudioFlinger to AudioTrack
      * when calling createTrack() including arguments that were passed as I/O for update by
      * CreateTrackInput.
      */
-    class CreateTrackOutput : public Parcelable {
+    class CreateTrackOutput {
     public:
-        status_t readFromParcel(const Parcel *parcel) override {
-            /* input/output arguments*/
-            (void)parcel->read(&flags, sizeof(audio_output_flags_t));
-            frameCount = parcel->readInt64();
-            notificationFrameCount = parcel->readInt64();
-            (void)parcel->read(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->read(&sessionId, sizeof(audio_session_t));
-
-            /* output arguments*/
-            sampleRate = parcel->readUint32();
-            afFrameCount = parcel->readInt64();
-            afSampleRate = parcel->readInt64();
-            afLatencyMs = parcel->readInt32();
-            (void)parcel->read(&outputId, sizeof(audio_io_handle_t));
-            (void)parcel->read(&portId, sizeof(audio_port_handle_t));
-            return NO_ERROR;
-        }
-
-        status_t writeToParcel(Parcel *parcel) const override {
-            /* input/output arguments*/
-            (void)parcel->write(&flags, sizeof(audio_output_flags_t));
-            (void)parcel->writeInt64(frameCount);
-            (void)parcel->writeInt64(notificationFrameCount);
-            (void)parcel->write(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->write(&sessionId, sizeof(audio_session_t));
-
-            /* output arguments*/
-            (void)parcel->writeUint32(sampleRate);
-            (void)parcel->writeInt64(afFrameCount);
-            (void)parcel->writeInt64(afSampleRate);
-            (void)parcel->writeInt32(afLatencyMs);
-            (void)parcel->write(&outputId, sizeof(audio_io_handle_t));
-            (void)parcel->write(&portId, sizeof(audio_port_handle_t));
-            return NO_ERROR;
-        }
-
         /* input/output */
         audio_output_flags_t flags;
         size_t frameCount;
@@ -200,59 +104,17 @@
         uint32_t afLatencyMs;
         audio_io_handle_t outputId;
         audio_port_handle_t portId;
+
+        ConversionResult<media::CreateTrackResponse> toAidl() const;
+        static ConversionResult<CreateTrackOutput> fromAidl(const media::CreateTrackResponse& aidl);
     };
 
     /* CreateRecordInput contains all input arguments sent by AudioRecord to AudioFlinger
      * when calling createRecord() including arguments that will be updated by AudioFlinger
      * and returned in CreateRecordOutput object
      */
-    class CreateRecordInput : public Parcelable {
+    class CreateRecordInput {
     public:
-        status_t readFromParcel(const Parcel *parcel) override {
-            /* input arguments*/
-            memset(&attr, 0, sizeof(audio_attributes_t));
-            if (parcel->read(&attr, sizeof(audio_attributes_t)) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-            attr.tags[AUDIO_ATTRIBUTES_TAGS_MAX_SIZE -1] = '\0';
-            memset(&config, 0, sizeof(audio_config_base_t));
-            if (parcel->read(&config, sizeof(audio_config_base_t)) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-            if (clientInfo.readFromParcel(parcel) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-            opPackageName = parcel->readString16();
-            if (parcel->read(&riid, sizeof(audio_unique_id_t)) != NO_ERROR) {
-                return DEAD_OBJECT;
-            }
-
-            /* input/output arguments*/
-            (void)parcel->read(&flags, sizeof(audio_input_flags_t));
-            frameCount = parcel->readInt64();
-            notificationFrameCount = parcel->readInt64();
-            (void)parcel->read(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->read(&sessionId, sizeof(audio_session_t));
-            return NO_ERROR;
-        }
-
-        status_t writeToParcel(Parcel *parcel) const override {
-            /* input arguments*/
-            (void)parcel->write(&attr, sizeof(audio_attributes_t));
-            (void)parcel->write(&config, sizeof(audio_config_base_t));
-            (void)clientInfo.writeToParcel(parcel);
-            (void)parcel->writeString16(opPackageName);
-            (void)parcel->write(&riid, sizeof(audio_unique_id_t));
-
-            /* input/output arguments*/
-            (void)parcel->write(&flags, sizeof(audio_input_flags_t));
-            (void)parcel->writeInt64(frameCount);
-            (void)parcel->writeInt64(notificationFrameCount);
-            (void)parcel->write(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->write(&sessionId, sizeof(audio_session_t));
-            return NO_ERROR;
-        }
-
         /* input */
         audio_attributes_t attr;
         audio_config_base_t config;
@@ -266,77 +128,17 @@
         size_t notificationFrameCount;
         audio_port_handle_t selectedDeviceId;
         audio_session_t sessionId;
+
+        ConversionResult<media::CreateRecordRequest> toAidl() const;
+        static ConversionResult<CreateRecordInput> fromAidl(const media::CreateRecordRequest& aidl);
     };
 
     /* CreateRecordOutput contains all output arguments returned by AudioFlinger to AudioRecord
      * when calling createRecord() including arguments that were passed as I/O for update by
      * CreateRecordInput.
      */
-    class CreateRecordOutput : public Parcelable {
+    class CreateRecordOutput {
     public:
-        status_t readFromParcel(const Parcel *parcel) override {
-            /* input/output arguments*/
-            (void)parcel->read(&flags, sizeof(audio_input_flags_t));
-            frameCount = parcel->readInt64();
-            notificationFrameCount = parcel->readInt64();
-            (void)parcel->read(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->read(&sessionId, sizeof(audio_session_t));
-
-            /* output arguments*/
-            sampleRate = parcel->readUint32();
-            (void)parcel->read(&inputId, sizeof(audio_io_handle_t));
-            if (parcel->readInt32() != 0) {
-                cblk = interface_cast<IMemory>(parcel->readStrongBinder());
-                // TODO: Using unsecurePointer() has some associated security
-                //       pitfalls (see declaration for details).
-                //       Either document why it is safe in this case or address
-                //       the issue (e.g. by copying).
-                if (cblk == 0 || cblk->unsecurePointer() == NULL) {
-                    return BAD_VALUE;
-                }
-            }
-            if (parcel->readInt32() != 0) {
-                buffers = interface_cast<IMemory>(parcel->readStrongBinder());
-                // TODO: Using unsecurePointer() has some associated security
-                //       pitfalls (see declaration for details).
-                //       Either document why it is safe in this case or address
-                //       the issue (e.g. by copying).
-                if (buffers == 0 || buffers->unsecurePointer() == NULL) {
-                    return BAD_VALUE;
-                }
-            }
-            (void)parcel->read(&portId, sizeof(audio_port_handle_t));
-            return NO_ERROR;
-        }
-
-        status_t writeToParcel(Parcel *parcel) const override {
-            /* input/output arguments*/
-            (void)parcel->write(&flags, sizeof(audio_input_flags_t));
-            (void)parcel->writeInt64(frameCount);
-            (void)parcel->writeInt64(notificationFrameCount);
-            (void)parcel->write(&selectedDeviceId, sizeof(audio_port_handle_t));
-            (void)parcel->write(&sessionId, sizeof(audio_session_t));
-
-            /* output arguments*/
-            (void)parcel->writeUint32(sampleRate);
-            (void)parcel->write(&inputId, sizeof(audio_io_handle_t));
-            if (cblk != 0) {
-                (void)parcel->writeInt32(1);
-                (void)parcel->writeStrongBinder(IInterface::asBinder(cblk));
-            } else {
-                (void)parcel->writeInt32(0);
-            }
-            if (buffers != 0) {
-                (void)parcel->writeInt32(1);
-                (void)parcel->writeStrongBinder(IInterface::asBinder(buffers));
-            } else {
-                (void)parcel->writeInt32(0);
-            }
-            (void)parcel->write(&portId, sizeof(audio_port_handle_t));
-
-            return NO_ERROR;
-        }
-
         /* input/output */
         audio_input_flags_t flags;
         size_t frameCount;
@@ -350,6 +152,9 @@
         sp<IMemory> cblk;
         sp<IMemory> buffers;
         audio_port_handle_t portId;
+
+        ConversionResult<media::CreateRecordResponse> toAidl() const;
+        static ConversionResult<CreateRecordOutput> fromAidl(const media::CreateRecordResponse& aidl);
     };
 
     // invariant on exit for all APIs that return an sp<>:
@@ -358,13 +163,13 @@
     /* create an audio track and registers it with AudioFlinger.
      * return null if the track cannot be created.
      */
-    virtual sp<IAudioTrack> createTrack(const CreateTrackInput& input,
-                                        CreateTrackOutput& output,
-                                        status_t *status) = 0;
+    virtual sp<IAudioTrack> createTrack(const media::CreateTrackRequest& input,
+                                        media::CreateTrackResponse& output,
+                                        status_t* status) = 0;
 
-    virtual sp<media::IAudioRecord> createRecord(const CreateRecordInput& input,
-                                        CreateRecordOutput& output,
-                                        status_t *status) = 0;
+    virtual sp<media::IAudioRecord> createRecord(const media::CreateRecordRequest& input,
+                                                 media::CreateRecordResponse& output,
+                                                 status_t* status) = 0;
 
     // FIXME Surprisingly, format/latency don't work for input handles
 
diff --git a/media/libshmem/Android.bp b/media/libshmem/Android.bp
index c8d2284..b549b5d 100644
--- a/media/libshmem/Android.bp
+++ b/media/libshmem/Android.bp
@@ -1,6 +1,9 @@
 aidl_interface {
     name: "shared-file-region-aidl",
     unstable: true,
+    host_supported: true,
+    vendor_available: true,
+    double_loadable: true,
     local_include_dir: "aidl",
     srcs: [
         "aidl/android/media/SharedFileRegion.aidl",
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index e589eb9..4929346 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -22,12 +22,14 @@
 // Define AUDIO_ARRAYS_STATIC_CHECK to check all audio arrays are correct
 #define AUDIO_ARRAYS_STATIC_CHECK 1
 
-#define VALUE_OR_FATAL(result) \
-    ({ auto _tmp = (result); \
-       LOG_ALWAYS_FATAL_IF(!_tmp.ok(), \
+#define VALUE_OR_FATAL(result)                   \
+    ({                                           \
+       auto _tmp = (result);                     \
+       LOG_ALWAYS_FATAL_IF(!_tmp.ok(),           \
                            "Failed result (%d)", \
-                           _tmp.error()); \
-       _tmp.value(); })
+                           _tmp.error());        \
+       std::move(_tmp.value());                  \
+     })
 
 #include "Configuration.h"
 #include <dirent.h>
@@ -755,10 +757,27 @@
 
 // IAudioFlinger interface
 
-sp<IAudioTrack> AudioFlinger::createTrack(const CreateTrackInput& input,
-                                          CreateTrackOutput& output,
-                                          status_t *status)
+sp<IAudioTrack> AudioFlinger::createTrack(const media::CreateTrackRequest& _input,
+                                          media::CreateTrackResponse& _output,
+                                          status_t* status)
 {
+    // Local version of VALUE_OR_RETURN, specific to this method's calling conventions.
+#define VALUE_OR_EXIT(expr)         \
+    ({                              \
+        auto _tmp = (expr);         \
+        if (!_tmp.ok()) {           \
+            *status = _tmp.error(); \
+            return nullptr;         \
+        }                           \
+        std::move(_tmp.value());    \
+    })
+
+    CreateTrackInput input = VALUE_OR_EXIT(CreateTrackInput::fromAidl(_input));
+
+#undef VALUE_OR_EXIT
+
+    CreateTrackOutput output;
+
     sp<PlaybackThread::Track> track;
     sp<TrackHandle> trackHandle;
     sp<Client> client;
@@ -1015,6 +1034,8 @@
         AudioSystem::moveEffectsToIo(effectIds, effectThreadId);
     }
 
+    _output = VALUE_OR_FATAL(output.toAidl());
+
     // return handle to client
     trackHandle = new TrackHandle(track);
 
@@ -1997,10 +2018,26 @@
 
 // ----------------------------------------------------------------------------
 
-sp<media::IAudioRecord> AudioFlinger::createRecord(const CreateRecordInput& input,
-                                                   CreateRecordOutput& output,
-                                                   status_t *status)
+sp<media::IAudioRecord> AudioFlinger::createRecord(const media::CreateRecordRequest& _input,
+                                                   media::CreateRecordResponse& _output,
+                                                   status_t* status)
 {
+    // Local version of VALUE_OR_RETURN, specific to this method's calling conventions.
+#define VALUE_OR_EXIT(expr)         \
+    ({                              \
+        auto _tmp = (expr);         \
+        if (!_tmp.ok()) {           \
+            *status = _tmp.error(); \
+            return nullptr;         \
+        }                           \
+        std::move(_tmp.value());    \
+    })
+
+    CreateRecordInput input = VALUE_OR_EXIT(CreateRecordInput::fromAidl(_input));
+
+#undef VALUE_OR_EXIT
+    CreateRecordOutput output;
+
     sp<RecordThread::RecordTrack> recordTrack;
     sp<RecordHandle> recordHandle;
     sp<Client> client;
@@ -2138,6 +2175,8 @@
     output.buffers = recordTrack->getBuffers();
     output.portId = portId;
 
+    _output = VALUE_OR_FATAL(output.toAidl());
+
     // return handle to client
     recordHandle = new RecordHandle(recordTrack);
 
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 65d672a..2ff6af5 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -135,13 +135,13 @@
     virtual     status_t    dump(int fd, const Vector<String16>& args);
 
     // IAudioFlinger interface, in binder opcode order
-    virtual sp<IAudioTrack> createTrack(const CreateTrackInput& input,
-                                        CreateTrackOutput& output,
-                                        status_t *status);
+    virtual sp<IAudioTrack> createTrack(const media::CreateTrackRequest& input,
+                                        media::CreateTrackResponse& output,
+                                        status_t* status) override;
 
-    virtual sp<media::IAudioRecord> createRecord(const CreateRecordInput& input,
-                                                 CreateRecordOutput& output,
-                                                 status_t *status);
+    virtual sp<media::IAudioRecord> createRecord(const media::CreateRecordRequest& input,
+                                                 media::CreateRecordResponse& output,
+                                                 status_t* status) override;
 
     virtual     uint32_t    sampleRate(audio_io_handle_t ioHandle) const;
     virtual     audio_format_t format(audio_io_handle_t output) const;