Add attributionTag to audio-recordings

... by replacing packageName/uid/pid by the Identity class.

This allows us to track which parts of the app trigger audio-recordings.
90% of the code is just sending around the additional parameters.

This adds it for the Java and native API.

Test: atest CtsAppOpsTestCases
            CtsNativeMediaAAudioTestCases
Fixes: 160150145
Change-Id: Ibd7b884f7fcd4668a4e27f997e59cfc3217a9e89
diff --git a/services/audioflinger/Android.bp b/services/audioflinger/Android.bp
index 518ef9a..2294c49 100644
--- a/services/audioflinger/Android.bp
+++ b/services/audioflinger/Android.bp
@@ -80,6 +80,7 @@
         "libmedia_helper",
         "libshmemcompat",
         "libvibrator",
+        "media_permission-aidl-cpp",
     ],
 
     static_libs: [
@@ -93,6 +94,10 @@
         "libmedia_headers",
     ],
 
+    export_shared_lib_headers: [
+        "media_permission-aidl-cpp",
+    ],
+
     cflags: [
         "-DSTATE_QUEUE_INSTANTIATIONS=\"StateQueueInstantiations.cpp\"",
         "-fvisibility=hidden",
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index dacb758..6678287 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -103,6 +103,7 @@
 namespace android {
 
 using media::IEffectClient;
+using media::permission::Identity;
 
 static const char kDeadlockedString[] = "AudioFlinger may be deadlocked\n";
 static const char kHardwareLockedString[] = "Hardware lock is taken\n";
@@ -355,7 +356,7 @@
 
         ret = AudioSystem::getOutputForAttr(&localAttr, &io,
                                             actualSessionId,
-                                            &streamType, client.clientPid, client.clientUid,
+                                            &streamType, client.identity,
                                             &fullConfig,
                                             (audio_output_flags_t)(AUDIO_OUTPUT_FLAG_MMAP_NOIRQ |
                                                     AUDIO_OUTPUT_FLAG_DIRECT),
@@ -366,9 +367,7 @@
         ret = AudioSystem::getInputForAttr(&localAttr, &io,
                                               RECORD_RIID_INVALID,
                                               actualSessionId,
-                                              client.clientPid,
-                                              client.clientUid,
-                                              client.packageName,
+                                              client.identity,
                                               config,
                                               AUDIO_INPUT_FLAG_MMAP_NOIRQ, deviceId, &portId);
     }
@@ -772,27 +771,33 @@
     audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE;
     std::vector<audio_io_handle_t> secondaryOutputs;
 
-    bool updatePid = (input.clientInfo.clientPid == -1);
+    // TODO b/182392553: refactor or make clearer
+    pid_t clientPid =
+        VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_pid_t(input.clientInfo.identity.pid));
+    bool updatePid = (clientPid == (pid_t)-1);
     const uid_t callingUid = IPCThreadState::self()->getCallingUid();
-    uid_t clientUid = input.clientInfo.clientUid;
+    uid_t clientUid =
+        VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_uid_t(input.clientInfo.identity.uid));
     audio_io_handle_t effectThreadId = AUDIO_IO_HANDLE_NONE;
     std::vector<int> effectIds;
     audio_attributes_t localAttr = input.attr;
 
+    Identity adjIdentity = input.clientInfo.identity;
     if (!isAudioServerOrMediaServerUid(callingUid)) {
         ALOGW_IF(clientUid != callingUid,
                 "%s uid %d tried to pass itself off as %d",
                 __FUNCTION__, callingUid, clientUid);
+        adjIdentity.uid = VALUE_OR_RETURN_STATUS(legacy2aidl_uid_t_int32_t(callingUid));
         clientUid = callingUid;
         updatePid = true;
     }
-    pid_t clientPid = input.clientInfo.clientPid;
     const pid_t callingPid = IPCThreadState::self()->getCallingPid();
     if (updatePid) {
-        ALOGW_IF(clientPid != -1 && clientPid != callingPid,
+        ALOGW_IF(clientPid != (pid_t)-1 && clientPid != callingPid,
                  "%s uid %d pid %d tried to pass itself off as pid %d",
                  __func__, callingUid, callingPid, clientPid);
         clientPid = callingPid;
+        adjIdentity.pid = VALUE_OR_RETURN_STATUS(legacy2aidl_pid_t_int32_t(callingPid));
     }
 
     audio_session_t sessionId = input.sessionId;
@@ -807,7 +812,7 @@
     output.outputId = AUDIO_IO_HANDLE_NONE;
     output.selectedDeviceId = input.selectedDeviceId;
     lStatus = AudioSystem::getOutputForAttr(&localAttr, &output.outputId, sessionId, &streamType,
-                                            clientPid, clientUid, &input.config, input.flags,
+                                            adjIdentity, &input.config, input.flags,
                                             &output.selectedDeviceId, &portId, &secondaryOutputs);
 
     if (lStatus != NO_ERROR || output.outputId == AUDIO_IO_HANDLE_NONE) {
@@ -872,9 +877,8 @@
                                       &output.frameCount, &output.notificationFrameCount,
                                       input.notificationsPerBuffer, input.speed,
                                       input.sharedBuffer, sessionId, &output.flags,
-                                      callingPid, input.clientInfo.clientTid, clientUid,
-                                      &lStatus, portId, input.audioTrackCallback,
-                                      input.opPackageName);
+                                      callingPid, adjIdentity, input.clientInfo.clientTid,
+                                      &lStatus, portId, input.audioTrackCallback);
         LOG_ALWAYS_FATAL_IF((lStatus == NO_ERROR) && (track == 0));
         // we don't abort yet if lStatus != NO_ERROR; there is still work to be done regardless
 
@@ -2032,23 +2036,25 @@
     output.buffers.clear();
     output.inputId = AUDIO_IO_HANDLE_NONE;
 
-    bool updatePid = (input.clientInfo.clientPid == -1);
+    // TODO b/182392553: refactor or clean up
+    Identity adjIdentity = input.clientInfo.identity;
+    bool updatePid = (adjIdentity.pid == -1);
     const uid_t callingUid = IPCThreadState::self()->getCallingUid();
-    uid_t clientUid = input.clientInfo.clientUid;
+    const uid_t currentUid = VALUE_OR_RETURN_STATUS(legacy2aidl_uid_t_int32_t(adjIdentity.uid));
     if (!isAudioServerOrMediaServerUid(callingUid)) {
-        ALOGW_IF(clientUid != callingUid,
+        ALOGW_IF(currentUid != callingUid,
                 "%s uid %d tried to pass itself off as %d",
-                __FUNCTION__, callingUid, clientUid);
-        clientUid = callingUid;
+                __FUNCTION__, callingUid, currentUid);
+        adjIdentity.uid = VALUE_OR_RETURN_STATUS(legacy2aidl_uid_t_int32_t(callingUid));
         updatePid = true;
     }
-    pid_t clientPid = input.clientInfo.clientPid;
     const pid_t callingPid = IPCThreadState::self()->getCallingPid();
+    const pid_t currentPid = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_pid_t(adjIdentity.pid));
     if (updatePid) {
-        ALOGW_IF(clientPid != -1 && clientPid != callingPid,
+        ALOGW_IF(currentPid != (pid_t)-1 && currentPid != callingPid,
                  "%s uid %d pid %d tried to pass itself off as pid %d",
-                 __func__, callingUid, callingPid, clientPid);
-        clientPid = callingPid;
+                 __func__, callingUid, callingPid, currentPid);
+        adjIdentity.pid = VALUE_OR_RETURN_STATUS(legacy2aidl_pid_t_int32_t(callingPid));
     }
 
     // we don't yet support anything other than linear PCM
@@ -2076,7 +2082,7 @@
     output.selectedDeviceId = input.selectedDeviceId;
     output.flags = input.flags;
 
-    client = registerPid(clientPid);
+    client = registerPid(VALUE_OR_FATAL(aidl2legacy_int32_t_pid_t(adjIdentity.pid)));
 
     // Not a conventional loop, but a retry loop for at most two iterations total.
     // Try first maybe with FAST flag then try again without FAST flag if that fails.
@@ -2096,9 +2102,7 @@
                                       input.riid,
                                       sessionId,
                                     // FIXME compare to AudioTrack
-                                      clientPid,
-                                      clientUid,
-                                      input.opPackageName,
+                                      adjIdentity,
                                       &input.config,
                                       output.flags, &output.selectedDeviceId, &portId);
     if (lStatus != NO_ERROR) {
@@ -2125,10 +2129,9 @@
                                                   input.config.format, input.config.channel_mask,
                                                   &output.frameCount, sessionId,
                                                   &output.notificationFrameCount,
-                                                  callingPid, clientUid, &output.flags,
+                                                  callingPid, adjIdentity, &output.flags,
                                                   input.clientInfo.clientTid,
-                                                  &lStatus, portId,
-                                                  input.opPackageName);
+                                                  &lStatus, portId);
         LOG_ALWAYS_FATAL_IF((lStatus == NO_ERROR) && (recordTrack == 0));
 
         // lStatus == BAD_TYPE means FAST flag was rejected: request a new input from
@@ -3521,9 +3524,7 @@
     const int32_t priority = request.priority;
     const AudioDeviceTypeAddr device = VALUE_OR_RETURN_STATUS(
             aidl2legacy_AudioDeviceTypeAddress(request.device));
-    const String16 opPackageName = VALUE_OR_RETURN_STATUS(
-            aidl2legacy_string_view_String16(request.opPackageName));
-    pid_t pid = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_pid_t(request.pid));
+    Identity adjIdentity = request.identity;
     const audio_session_t sessionId = VALUE_OR_RETURN_STATUS(
             aidl2legacy_int32_t_audio_session_t(request.sessionId));
     audio_io_handle_t io = VALUE_OR_RETURN_STATUS(
@@ -3539,17 +3540,21 @@
 
     status_t lStatus = NO_ERROR;
 
+    // TODO b/182392553: refactor or make clearer
     const uid_t callingUid = IPCThreadState::self()->getCallingUid();
-    if (pid == -1 || !isAudioServerOrMediaServerUid(callingUid)) {
+    adjIdentity.uid = VALUE_OR_RETURN_STATUS(legacy2aidl_uid_t_int32_t(callingUid));
+    pid_t currentPid = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_pid_t(adjIdentity.pid));
+    if (currentPid == -1 || !isAudioServerOrMediaServerUid(callingUid)) {
         const pid_t callingPid = IPCThreadState::self()->getCallingPid();
-        ALOGW_IF(pid != -1 && pid != callingPid,
+        ALOGW_IF(currentPid != -1 && currentPid != callingPid,
                  "%s uid %d pid %d tried to pass itself off as pid %d",
-                 __func__, callingUid, callingPid, pid);
-        pid = callingPid;
+                 __func__, callingUid, callingPid, currentPid);
+        adjIdentity.pid = VALUE_OR_RETURN_STATUS(legacy2aidl_pid_t_int32_t(callingPid));
+        currentPid = callingPid;
     }
 
     ALOGV("createEffect pid %d, effectClient %p, priority %d, sessionId %d, io %d, factory %p",
-          pid, effectClient.get(), priority, sessionId, io, mEffectsFactoryHal.get());
+          adjIdentity.pid, effectClient.get(), priority, sessionId, io, mEffectsFactoryHal.get());
 
     if (mEffectsFactoryHal == 0) {
         ALOGE("%s: no effects factory hal", __func__);
@@ -3577,7 +3582,7 @@
             goto Exit;
         }
     } else if (sessionId == AUDIO_SESSION_DEVICE) {
-        if (!modifyDefaultAudioEffectsAllowed(pid, callingUid)) {
+        if (!modifyDefaultAudioEffectsAllowed(adjIdentity)) {
             ALOGE("%s: device effect permission denied for uid %d", __func__, callingUid);
             lStatus = PERMISSION_DENIED;
             goto Exit;
@@ -3622,7 +3627,7 @@
         // check recording permission for visualizer
         if ((memcmp(&descOut.type, SL_IID_VISUALIZATION, sizeof(effect_uuid_t)) == 0) &&
             // TODO: Do we need to start/stop op - i.e. is there recording being performed?
-            !recordingAllowed(opPackageName, pid, callingUid)) {
+            !recordingAllowed(adjIdentity)) {
             lStatus = PERMISSION_DENIED;
             goto Exit;
         }
@@ -3648,7 +3653,7 @@
         Mutex::Autolock _l(mLock);
 
         if (sessionId == AUDIO_SESSION_DEVICE) {
-            sp<Client> client = registerPid(pid);
+            sp<Client> client = registerPid(currentPid);
             ALOGV("%s device type %#x address %s", __func__, device.mType, device.getAddress());
             handle = mDeviceEffectManager.createEffect_l(
                     &descOut, device, client, effectClient, mPatchPanel.patches_l(),
@@ -3752,7 +3757,7 @@
             }
         }
 
-        sp<Client> client = registerPid(pid);
+        sp<Client> client = registerPid(currentPid);
 
         // create effect on selected output thread
         bool pinned = !audio_is_global_session(sessionId) && isSessionAcquired_l(sessionId);
diff --git a/services/audioflinger/MmapTracks.h b/services/audioflinger/MmapTracks.h
index b83f6b5..ba868d7 100644
--- a/services/audioflinger/MmapTracks.h
+++ b/services/audioflinger/MmapTracks.h
@@ -29,8 +29,7 @@
                             audio_channel_mask_t channelMask,
                             audio_session_t sessionId,
                             bool isOut,
-                            uid_t uid,
-                            pid_t pid,
+                            const media::permission::Identity& identity,
                             pid_t creatorPid,
                             audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
     virtual             ~MmapTrack();
diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index c70d6f9..a5b3077 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -15,6 +15,8 @@
 ** limitations under the License.
 */
 
+#include <android/media/permission/Identity.h>
+
 #ifndef INCLUDING_FROM_AUDIOFLINGER_H
     #error This header file should only be included from AudioFlinger.h
 #endif
@@ -26,11 +28,13 @@
     bool hasOpPlayAudio() const;
 
     static sp<OpPlayAudioMonitor> createIfNeeded(
-            uid_t uid, const audio_attributes_t& attr, int id, audio_stream_type_t streamType,
-            const std::string& opPackageName);
+            const android::media::permission::Identity& identity,
+            const audio_attributes_t& attr, int id,
+            audio_stream_type_t streamType);
 
 private:
-    OpPlayAudioMonitor(uid_t uid, audio_usage_t usage, int id, const String16& opPackageName);
+    OpPlayAudioMonitor(const android::media::permission::Identity& identity,
+        audio_usage_t usage, int id);
     void onFirstRef() override;
     static void getPackagesForUid(uid_t uid, Vector<String16>& packages);
 
@@ -50,10 +54,9 @@
     void checkPlayAudioForUsage();
 
     std::atomic_bool mHasOpPlayAudio;
-    const uid_t mUid;
+    const android::media::permission::Identity mIdentity;
     const int32_t mUsage; // on purpose not audio_usage_t because always checked in appOps as int32_t
     const int mId; // for logging purposes only
-    const String16 mOpPackageName;
 };
 
 // playback track
@@ -72,14 +75,13 @@
                                 const sp<IMemory>& sharedBuffer,
                                 audio_session_t sessionId,
                                 pid_t creatorPid,
-                                uid_t uid,
+                                const media::permission::Identity& identity,
                                 audio_output_flags_t flags,
                                 track_type type,
                                 audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE,
                                 /** default behaviour is to start when there are as many frames
                                   * ready as possible (aka. Buffer is full). */
-                                size_t frameCountToBeReady = SIZE_MAX,
-                                const std::string opPackageName = "");
+                                size_t frameCountToBeReady = SIZE_MAX);
     virtual             ~Track();
     virtual status_t    initCheck() const;
 
@@ -336,7 +338,7 @@
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
                                 size_t frameCount,
-                                uid_t uid);
+                                android::media::permission::Identity& identity);
     virtual             ~OutputTrack();
 
     virtual status_t    start(AudioSystem::sync_event_t event =
diff --git a/services/audioflinger/RecordTracks.h b/services/audioflinger/RecordTracks.h
index d87239d..4d03441 100644
--- a/services/audioflinger/RecordTracks.h
+++ b/services/audioflinger/RecordTracks.h
@@ -26,10 +26,10 @@
     bool hasOpRecordAudio() const;
 
     static sp<OpRecordAudioMonitor> createIfNeeded
-        (uid_t uid, const audio_attributes_t& attr, const String16& opPackageName);
+        (const media::permission::Identity& identity, const audio_attributes_t& attr);
 
 private:
-    OpRecordAudioMonitor(uid_t uid, const String16& opPackageName);
+    explicit OpRecordAudioMonitor(const media::permission::Identity& identity);
     void onFirstRef() override;
 
     AppOpsManager mAppOpsManager;
@@ -49,8 +49,7 @@
     void checkRecordAudio();
 
     std::atomic_bool mHasOpRecordAudio;
-    const uid_t mUid;
-    const String16 mPackage;
+    const media::permission::Identity mIdentity;
 };
 
 // record track
@@ -67,10 +66,9 @@
                                 size_t bufferSize,
                                 audio_session_t sessionId,
                                 pid_t creatorPid,
-                                uid_t uid,
+                                const media::permission::Identity& identity,
                                 audio_input_flags_t flags,
                                 track_type type,
-                                const String16& opPackageName,
                                 audio_port_handle_t portId = AUDIO_PORT_HANDLE_NONE);
     virtual             ~RecordTrack();
     virtual status_t    initCheck() const;
@@ -149,7 +147,7 @@
 
             // used to enforce OP_RECORD_AUDIO
             uid_t                              mUid;
-            String16                           mOpPackageName;
+            media::permission::Identity        mIdentity;
             sp<OpRecordAudioMonitor>           mOpRecordAudioMonitor;
 };
 
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index eaf0d10..90f7a61 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -108,6 +108,7 @@
 
 // TODO: Move these macro/inlines to a header file.
 #define max(a, b) ((a) > (b) ? (a) : (b))
+
 template <typename T>
 static inline T min(const T& a, const T& b)
 {
@@ -117,6 +118,7 @@
 namespace android {
 
 using media::IEffectClient;
+using media::permission::Identity;
 
 // retry counts for buffer fill timeout
 // 50 * ~20msecs = 1 second
@@ -2076,12 +2078,11 @@
         audio_session_t sessionId,
         audio_output_flags_t *flags,
         pid_t creatorPid,
+        const Identity& identity,
         pid_t tid,
-        uid_t uid,
         status_t *status,
         audio_port_handle_t portId,
-        const sp<media::IAudioTrackCallback>& callback,
-        const std::string& opPackageName)
+        const sp<media::IAudioTrackCallback>& callback)
 {
     size_t frameCount = *pFrameCount;
     size_t notificationFrameCount = *pNotificationFrameCount;
@@ -2172,8 +2173,8 @@
                 "sampleRate=%u mSampleRate=%u "
                 "hasFastMixer=%d tid=%d fastTrackAvailMask=%#x",
                 sharedBuffer.get(), frameCount, mFrameCount, format, mFormat,
-                audio_is_linear_pcm(format),
-                channelMask, sampleRate, mSampleRate, hasFastMixer(), tid, mFastTrackAvailMask);
+                audio_is_linear_pcm(format), channelMask, sampleRate,
+                mSampleRate, hasFastMixer(), tid, mFastTrackAvailMask);
         *flags = (audio_output_flags_t)(*flags & ~AUDIO_OUTPUT_FLAG_FAST);
       }
     }
@@ -2372,8 +2373,8 @@
         track = new Track(this, client, streamType, attr, sampleRate, format,
                           channelMask, frameCount,
                           nullptr /* buffer */, (size_t)0 /* bufferSize */, sharedBuffer,
-                          sessionId, creatorPid, uid, trackFlags, TrackBase::TYPE_DEFAULT, portId,
-                          SIZE_MAX /*frameCountToBeReady*/, opPackageName);
+                          sessionId, creatorPid, identity, trackFlags, TrackBase::TYPE_DEFAULT,
+                          portId, SIZE_MAX /*frameCountToBeReady*/);
 
         lStatus = track != 0 ? track->initCheck() : (status_t) NO_MEMORY;
         if (lStatus != NO_ERROR) {
@@ -6812,13 +6813,19 @@
     // from different OutputTracks and their associated MixerThreads (e.g. one may
     // nearly empty and the other may be dropping data).
 
+    // TODO b/182392769: use identity util, move to server edge
+    Identity identity = Identity();
+    identity.uid = VALUE_OR_FATAL(legacy2aidl_uid_t_int32_t(
+        IPCThreadState::self()->getCallingUid()));
+    identity.pid = VALUE_OR_FATAL(legacy2aidl_pid_t_int32_t(
+      IPCThreadState::self()->getCallingPid()));
     sp<OutputTrack> outputTrack = new OutputTrack(thread,
                                             this,
                                             mSampleRate,
                                             mFormat,
                                             mChannelMask,
                                             frameCount,
-                                            IPCThreadState::self()->getCallingUid());
+                                            identity);
     status_t status = outputTrack != 0 ? outputTrack->initCheck() : (status_t) NO_MEMORY;
     if (status != NO_ERROR) {
         ALOGE("addOutputTrack() initCheck failed %d", status);
@@ -7730,12 +7737,11 @@
         audio_session_t sessionId,
         size_t *pNotificationFrameCount,
         pid_t creatorPid,
-        uid_t uid,
+        const Identity& identity,
         audio_input_flags_t *flags,
         pid_t tid,
         status_t *status,
-        audio_port_handle_t portId,
-        const String16& opPackageName)
+        audio_port_handle_t portId)
 {
     size_t frameCount = *pFrameCount;
     size_t notificationFrameCount = *pNotificationFrameCount;
@@ -7868,8 +7874,8 @@
 
         track = new RecordTrack(this, client, attr, sampleRate,
                       format, channelMask, frameCount,
-                      nullptr /* buffer */, (size_t)0 /* bufferSize */, sessionId, creatorPid, uid,
-                      *flags, TrackBase::TYPE_DEFAULT, opPackageName, portId);
+                      nullptr /* buffer */, (size_t)0 /* bufferSize */, sessionId, creatorPid,
+                      identity, *flags, TrackBase::TYPE_DEFAULT, portId);
 
         lStatus = track->initCheck();
         if (lStatus != NO_ERROR) {
@@ -8884,7 +8890,7 @@
                                          audio_port_handle_t *handle)
 {
     ALOGV("%s clientUid %d mStandby %d mPortId %d *handle %d", __FUNCTION__,
-          client.clientUid, mStandby, mPortId, *handle);
+          client.identity.uid, mStandby, mPortId, *handle);
     if (mHalStream == 0) {
         return NO_INIT;
     }
@@ -8916,8 +8922,7 @@
         ret = AudioSystem::getOutputForAttr(&mAttr, &io,
                                             mSessionId,
                                             &stream,
-                                            client.clientPid,
-                                            client.clientUid,
+                                            client.identity,
                                             &config,
                                             flags,
                                             &deviceId,
@@ -8934,9 +8939,7 @@
         ret = AudioSystem::getInputForAttr(&mAttr, &io,
                                               RECORD_RIID_INVALID,
                                               mSessionId,
-                                              client.clientPid,
-                                              client.clientUid,
-                                              client.packageName,
+                                              client.identity,
                                               &config,
                                               AUDIO_INPUT_FLAG_MMAP_NOIRQ,
                                               &deviceId,
@@ -8976,16 +8979,15 @@
 
     // Given that MmapThread::mAttr is mutable, should a MmapTrack have attributes ?
     sp<MmapTrack> track = new MmapTrack(this, attr == nullptr ? mAttr : *attr, mSampleRate, mFormat,
-                                        mChannelMask, mSessionId, isOutput(), client.clientUid,
-                                        client.clientPid, IPCThreadState::self()->getCallingPid(),
-                                        portId);
+                                        mChannelMask, mSessionId, isOutput(), client.identity,
+                                        IPCThreadState::self()->getCallingPid(), portId);
 
     if (isOutput()) {
         // force volume update when a new track is added
         mHalVolFloat = -1.0f;
     } else if (!track->isSilenced_l()) {
         for (const sp<MmapTrack> &t : mActiveTracks) {
-            if (t->isSilenced_l() && t->uid() != client.clientUid)
+            if (t->isSilenced_l() && t->uid() != client.identity.uid)
                 t->invalidate();
         }
     }
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index c974252..5aa5169 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -882,12 +882,11 @@
                                 audio_session_t sessionId,
                                 audio_output_flags_t *flags,
                                 pid_t creatorPid,
+                                const media::permission::Identity& identity,
                                 pid_t tid,
-                                uid_t uid,
                                 status_t *status /*non-NULL*/,
                                 audio_port_handle_t portId,
-                                const sp<media::IAudioTrackCallback>& callback,
-                                const std::string& opPackageName);
+                                const sp<media::IAudioTrackCallback>& callback);
 
                 AudioStreamOut* getOutput() const;
                 AudioStreamOut* clearOutput();
@@ -1642,12 +1641,11 @@
                     audio_session_t sessionId,
                     size_t *pNotificationFrameCount,
                     pid_t creatorPid,
-                    uid_t uid,
+                    const media::permission::Identity& identity,
                     audio_input_flags_t *flags,
                     pid_t tid,
                     status_t *status /*non-NULL*/,
-                    audio_port_handle_t portId,
-                    const String16& opPackageName);
+                    audio_port_handle_t portId);
 
             status_t    start(RecordTrack* recordTrack,
                               AudioSystem::sync_event_t event,
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index 5454778..a86102f 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -65,6 +65,7 @@
 
 using ::android::aidl_utils::binderStatusFromStatusT;
 using binder::Status;
+using media::permission::Identity;
 using media::VolumeShaper;
 // ----------------------------------------------------------------------------
 //      TrackBase
@@ -237,6 +238,13 @@
     }
 }
 
+// TODO b/182392769: use identity util
+Identity audioServerIdentity() {
+   Identity i = Identity();
+   i.uid = AID_AUDIOSERVER;
+   return i;
+}
+
 status_t AudioFlinger::ThreadBase::TrackBase::initCheck() const
 {
     status_t status;
@@ -489,10 +497,11 @@
 // static
 sp<AudioFlinger::PlaybackThread::OpPlayAudioMonitor>
 AudioFlinger::PlaybackThread::OpPlayAudioMonitor::createIfNeeded(
-            uid_t uid, const audio_attributes_t& attr, int id, audio_stream_type_t streamType,
-            const std::string& opPackageName)
+            const Identity& identity, const audio_attributes_t& attr, int id,
+            audio_stream_type_t streamType)
 {
     Vector <String16> packages;
+    uid_t uid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.uid));
     getPackagesForUid(uid, packages);
     if (isServiceUid(uid)) {
         if (packages.isEmpty()) {
@@ -515,31 +524,36 @@
         return nullptr;
     }
 
-    String16 opPackageNameStr(opPackageName.c_str());
-    if (opPackageName.empty()) {
+    // TODO b/182392769: use identity util
+    std::optional<std::string> opPackageNameStr = identity.packageName;
+    if (!identity.packageName.has_value()) {
         // If no package name is provided by the client, use the first associated with the uid
         if (!packages.isEmpty()) {
-            opPackageNameStr = packages[0];
+            opPackageNameStr =
+                VALUE_OR_FATAL(legacy2aidl_String16_string(packages[0]));
         }
     } else {
         // If the provided package name is invalid, we force app ops denial by clearing the package
         // name passed to OpPlayAudioMonitor
+        String16 opPackageLegacy = VALUE_OR_FATAL(
+            aidl2legacy_string_view_String16(opPackageNameStr.value_or("")));
         if (std::find_if(packages.begin(), packages.end(),
-                [&opPackageNameStr](const auto& package) {
-                return opPackageNameStr == package; }) == packages.end()) {
+                [&opPackageLegacy](const auto& package) {
+                return opPackageLegacy == package; }) == packages.end()) {
             ALOGW("The package name(%s) provided does not correspond to the uid %d, "
-                  "force muting the track", opPackageName.c_str(), uid);
-            // Set package name as an empty string so that hasOpPlayAudio will always return false.
-            opPackageNameStr = String16("");
+                  "force muting the track", opPackageNameStr.value().c_str(), uid);
+            // Set null package name so hasOpPlayAudio will always return false.
+            opPackageNameStr = std::optional<std::string>();
         }
     }
-    return new OpPlayAudioMonitor(uid, attr.usage, id, opPackageNameStr);
+    Identity adjIdentity = identity;
+    adjIdentity.packageName = opPackageNameStr;
+    return new OpPlayAudioMonitor(adjIdentity, attr.usage, id);
 }
 
 AudioFlinger::PlaybackThread::OpPlayAudioMonitor::OpPlayAudioMonitor(
-        uid_t uid, audio_usage_t usage, int id, const String16& opPackageName)
-        : mHasOpPlayAudio(true), mUid(uid), mUsage((int32_t) usage), mId(id),
-          mOpPackageName(opPackageName)
+        const Identity& identity, audio_usage_t usage, int id)
+        : mHasOpPlayAudio(true), mIdentity(identity), mUsage((int32_t) usage), mId(id)
 {
 }
 
@@ -554,9 +568,11 @@
 void AudioFlinger::PlaybackThread::OpPlayAudioMonitor::onFirstRef()
 {
     checkPlayAudioForUsage();
-    if (mOpPackageName.size() != 0) {
+    if (mIdentity.packageName.has_value()) {
         mOpCallback = new PlayAudioOpCallback(this);
-        mAppOpsManager.startWatchingMode(AppOpsManager::OP_PLAY_AUDIO, mOpPackageName, mOpCallback);
+        mAppOpsManager.startWatchingMode(AppOpsManager::OP_PLAY_AUDIO,
+            VALUE_OR_FATAL(aidl2legacy_string_view_String16(mIdentity.packageName.value_or("")))
+            , mOpCallback);
     }
 }
 
@@ -569,11 +585,14 @@
 // - not called from PlayAudioOpCallback because the callback is not installed in this case
 void AudioFlinger::PlaybackThread::OpPlayAudioMonitor::checkPlayAudioForUsage()
 {
-    if (mOpPackageName.size() == 0) {
+    if (!mIdentity.packageName.has_value()) {
         mHasOpPlayAudio.store(false);
     } else {
+        uid_t uid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(mIdentity.uid));
+        String16 packageName = VALUE_OR_FATAL(
+            aidl2legacy_string_view_String16(mIdentity.packageName.value_or("")));
         bool hasIt = mAppOpsManager.checkAudioOpNoThrow(AppOpsManager::OP_PLAY_AUDIO,
-                    mUsage, mUid, mOpPackageName) == AppOpsManager::MODE_ALLOWED;
+                    mUsage, uid, packageName) == AppOpsManager::MODE_ALLOWED;
         ALOGD("OpPlayAudio: track:%d usage:%d %smuted", mId, mUsage, hasIt ? "not " : "");
         mHasOpPlayAudio.store(hasIt);
     }
@@ -623,12 +642,11 @@
             const sp<IMemory>& sharedBuffer,
             audio_session_t sessionId,
             pid_t creatorPid,
-            uid_t uid,
+            const Identity& identity,
             audio_output_flags_t flags,
             track_type type,
             audio_port_handle_t portId,
-            size_t frameCountToBeReady,
-            const std::string opPackageName)
+            size_t frameCountToBeReady)
     :   TrackBase(thread, client, attr, sampleRate, format, channelMask, frameCount,
                   // TODO: Using unsecurePointer() has some associated security pitfalls
                   //       (see declaration for details).
@@ -636,7 +654,8 @@
                   //       issue (e.g. by copying).
                   (sharedBuffer != 0) ? sharedBuffer->unsecurePointer() : buffer,
                   (sharedBuffer != 0) ? sharedBuffer->size() : bufferSize,
-                  sessionId, creatorPid, uid, true /*isOut*/,
+                  sessionId, creatorPid,
+                  VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.uid)), true /*isOut*/,
                   (type == TYPE_PATCH) ? ( buffer == NULL ? ALLOC_LOCAL : ALLOC_NONE) : ALLOC_CBLK,
                   type,
                   portId,
@@ -651,8 +670,8 @@
     mPresentationCompleteFrames(0),
     mFrameMap(16 /* sink-frame-to-track-frame map memory */),
     mVolumeHandler(new media::VolumeHandler(sampleRate)),
-    mOpPlayAudioMonitor(OpPlayAudioMonitor::createIfNeeded(
-            uid, attr, id(), streamType, opPackageName)),
+    mOpPlayAudioMonitor(OpPlayAudioMonitor::createIfNeeded(identity, attr, id(),
+        streamType)),
     // mSinkTimestamp
     mFrameCountToBeReady(frameCountToBeReady),
     mFastIndex(-1),
@@ -674,6 +693,7 @@
         return;
     }
 
+    uid_t uid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.uid));
     if (!thread->isTrackAllowed_l(channelMask, format, sessionId, uid)) {
         ALOGE("%s(%d): no more tracks available", __func__, mId);
         releaseCblk(); // this makes the track invalid.
@@ -718,8 +738,10 @@
         // HapticGenerator effect, which will generate haptic data, on the track. In that case,
         // external vibration is always created for all tracks attached to haptic playback thread.
         mAudioVibrationController = new AudioVibrationController(this);
+        std::string packageName = identity.packageName.has_value() ?
+            identity.packageName.value() : "";
         mExternalVibration = new os::ExternalVibration(
-                mUid, opPackageName, mAttr, mAudioVibrationController);
+                mUid, packageName, mAttr, mAudioVibrationController);
     }
 
     // Once this item is logged by the server, the client can add properties.
@@ -1821,12 +1843,12 @@
             audio_format_t format,
             audio_channel_mask_t channelMask,
             size_t frameCount,
-            uid_t uid)
+            Identity& identity)
     :   Track(playbackThread, NULL, AUDIO_STREAM_PATCH,
               audio_attributes_t{} /* currently unused for output track */,
               sampleRate, format, channelMask, frameCount,
               nullptr /* buffer */, (size_t)0 /* bufferSize */, nullptr /* sharedBuffer */,
-              AUDIO_SESSION_NONE, getpid(), uid, AUDIO_OUTPUT_FLAG_NONE,
+              AUDIO_SESSION_NONE, getpid(), identity, AUDIO_OUTPUT_FLAG_NONE,
               TYPE_OUTPUT),
     mActive(false), mSourceThread(sourceThread)
 {
@@ -2056,8 +2078,8 @@
               audio_attributes_t{} /* currently unused for patch track */,
               sampleRate, format, channelMask, frameCount,
               buffer, bufferSize, nullptr /* sharedBuffer */,
-              AUDIO_SESSION_NONE, getpid(), AID_AUDIOSERVER, flags, TYPE_PATCH,
-              AUDIO_PORT_HANDLE_NONE, frameCountToBeReady),
+              AUDIO_SESSION_NONE, getpid(), audioServerIdentity(), flags,
+              TYPE_PATCH, AUDIO_PORT_HANDLE_NONE, frameCountToBeReady),
         PatchTrackBase(new ClientProxy(mCblk, mBuffer, frameCount, mFrameSize, true, true),
                        *playbackThread, timeout)
 {
@@ -2194,41 +2216,44 @@
 // static
 sp<AudioFlinger::RecordThread::OpRecordAudioMonitor>
 AudioFlinger::RecordThread::OpRecordAudioMonitor::createIfNeeded(
-            uid_t uid, const audio_attributes_t& attr, const String16& opPackageName)
+            const Identity& identity, const audio_attributes_t& attr)
 {
-    if (isServiceUid(uid)) {
-        ALOGV("not silencing record for service uid:%d pack:%s",
-                uid, String8(opPackageName).string());
+    if (isServiceUid(identity.uid)) {
+        ALOGV("not silencing record for service %s",
+                identity.toString().c_str());
         return nullptr;
     }
 
     // Capturing from FM TUNER output is not controlled by OP_RECORD_AUDIO
     // because it does not affect users privacy as does capturing from an actual microphone.
     if (attr.source == AUDIO_SOURCE_FM_TUNER) {
-        ALOGV("not muting FM TUNER capture for uid %d", uid);
+        ALOGV("not muting FM TUNER capture for uid %d", identity.uid);
         return nullptr;
     }
 
-    if (opPackageName.size() == 0) {
+    if (!identity.packageName.has_value() || identity.packageName.value().size() == 0) {
         Vector<String16> packages;
         // no package name, happens with SL ES clients
         // query package manager to find one
         PermissionController permissionController;
-        permissionController.getPackagesForUid(uid, packages);
+        permissionController.getPackagesForUid(identity.uid, packages);
         if (packages.isEmpty()) {
             return nullptr;
         } else {
-            ALOGV("using pack:%s for uid:%d", String8(packages[0]).string(), uid);
-            return new OpRecordAudioMonitor(uid, packages[0]);
+            Identity adjIdentity = identity;
+            adjIdentity.packageName =
+                VALUE_OR_FATAL(legacy2aidl_String16_string(packages[0]));
+            ALOGV("using identity:%s", adjIdentity.toString().c_str());
+            return new OpRecordAudioMonitor(adjIdentity);
         }
     }
 
-    return new OpRecordAudioMonitor(uid, opPackageName);
+    return new OpRecordAudioMonitor(identity);
 }
 
 AudioFlinger::RecordThread::OpRecordAudioMonitor::OpRecordAudioMonitor(
-        uid_t uid, const String16& opPackageName)
-        : mHasOpRecordAudio(true), mUid(uid), mPackage(opPackageName)
+        const Identity& identity)
+        : mHasOpRecordAudio(true), mIdentity(identity)
 {
 }
 
@@ -2244,8 +2269,10 @@
 {
     checkRecordAudio();
     mOpCallback = new RecordAudioOpCallback(this);
-    ALOGV("start watching OP_RECORD_AUDIO for pack:%s", String8(mPackage).string());
-    mAppOpsManager.startWatchingMode(AppOpsManager::OP_RECORD_AUDIO, mPackage, mOpCallback);
+    ALOGV("start watching OP_RECORD_AUDIO for %s", mIdentity.toString().c_str());
+    mAppOpsManager.startWatchingMode(AppOpsManager::OP_RECORD_AUDIO,
+        VALUE_OR_FATAL(aidl2legacy_string_view_String16(mIdentity.packageName.value_or(""))),
+        mOpCallback);
 }
 
 bool AudioFlinger::RecordThread::OpRecordAudioMonitor::hasOpRecordAudio() const {
@@ -2260,14 +2287,17 @@
 // - not called from RecordAudioOpCallback because the callback is not installed in this case
 void AudioFlinger::RecordThread::OpRecordAudioMonitor::checkRecordAudio()
 {
+
     const int32_t mode = mAppOpsManager.checkOp(AppOpsManager::OP_RECORD_AUDIO,
-            mUid, mPackage);
+            mIdentity.uid, VALUE_OR_FATAL(aidl2legacy_string_view_String16(
+                mIdentity.packageName.value_or(""))));
     const bool hasIt =  (mode == AppOpsManager::MODE_ALLOWED);
     // verbose logging only log when appOp changed
     ALOGI_IF(hasIt != mHasOpRecordAudio.load(),
-            "OP_RECORD_AUDIO missing, %ssilencing record uid%d pack:%s",
-            hasIt ? "un" : "", mUid, String8(mPackage).string());
+            "OP_RECORD_AUDIO missing, %ssilencing record %s",
+            hasIt ? "un" : "", mIdentity.toString().c_str());
     mHasOpRecordAudio.store(hasIt);
+
 }
 
 AudioFlinger::RecordThread::OpRecordAudioMonitor::RecordAudioOpCallback::RecordAudioOpCallback(
@@ -2361,14 +2391,15 @@
             size_t bufferSize,
             audio_session_t sessionId,
             pid_t creatorPid,
-            uid_t uid,
+            const Identity& identity,
             audio_input_flags_t flags,
             track_type type,
-            const String16& opPackageName,
             audio_port_handle_t portId)
     :   TrackBase(thread, client, attr, sampleRate, format,
                   channelMask, frameCount, buffer, bufferSize, sessionId,
-                  creatorPid, uid, false /*isOut*/,
+                  creatorPid,
+                  VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.uid)),
+                  false /*isOut*/,
                   (type == TYPE_DEFAULT) ?
                           ((flags & AUDIO_INPUT_FLAG_FAST) ? ALLOC_PIPE : ALLOC_CBLK) :
                           ((buffer == NULL) ? ALLOC_LOCAL : ALLOC_NONE),
@@ -2380,7 +2411,7 @@
         mRecordBufferConverter(NULL),
         mFlags(flags),
         mSilenced(false),
-        mOpRecordAudioMonitor(OpRecordAudioMonitor::createIfNeeded(uid, attr, opPackageName))
+        mOpRecordAudioMonitor(OpRecordAudioMonitor::createIfNeeded(mIdentity, attr))
 {
     if (mCblk == NULL) {
         return;
@@ -2421,7 +2452,9 @@
 #endif
 
     // Once this item is logged by the server, the client can add properties.
-    mTrackMetrics.logConstructor(creatorPid, uid, id());
+    pid_t pid = VALUE_OR_FATAL(aidl2legacy_int32_t_pid_t(mIdentity.pid));
+    uid_t uid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(mIdentity.uid));
+    mTrackMetrics.logConstructor(pid, uid, id());
 }
 
 AudioFlinger::RecordThread::RecordTrack::~RecordTrack()
@@ -2692,11 +2725,12 @@
     :   RecordTrack(recordThread, NULL,
                 audio_attributes_t{} /* currently unused for patch track */,
                 sampleRate, format, channelMask, frameCount,
-                buffer, bufferSize, AUDIO_SESSION_NONE, getpid(), AID_AUDIOSERVER,
-                flags, TYPE_PATCH, String16()),
+                buffer, bufferSize, AUDIO_SESSION_NONE, getpid(),
+                audioServerIdentity(), flags, TYPE_PATCH),
         PatchTrackBase(new ClientProxy(mCblk, mBuffer, frameCount, mFrameSize, false, true),
                        *recordThread, timeout)
 {
+    mIdentity.pid = VALUE_OR_FATAL(legacy2aidl_pid_t_int32_t(getpid()));
     ALOGV("%s(%d): sampleRate %d mPeerTimeout %d.%03d sec",
                                       __func__, mId, sampleRate,
                                       (int)mPeerTimeout.tv_sec,
@@ -2970,21 +3004,24 @@
         audio_channel_mask_t channelMask,
         audio_session_t sessionId,
         bool isOut,
-        uid_t uid,
-        pid_t pid,
+        const Identity& identity,
         pid_t creatorPid,
         audio_port_handle_t portId)
     :   TrackBase(thread, NULL, attr, sampleRate, format,
                   channelMask, (size_t)0 /* frameCount */,
                   nullptr /* buffer */, (size_t)0 /* bufferSize */,
-                  sessionId, creatorPid, uid, isOut,
+                  sessionId, creatorPid,
+                  VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.uid)),
+                  isOut,
                   ALLOC_NONE,
                   TYPE_DEFAULT, portId,
                   std::string(AMEDIAMETRICS_KEY_PREFIX_AUDIO_MMAP) + std::to_string(portId)),
-        mPid(pid), mSilenced(false), mSilencedNotified(false)
+        mPid(VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.pid))),
+            mSilenced(false), mSilencedNotified(false)
 {
     // Once this item is logged by the server, the client can add properties.
-    mTrackMetrics.logConstructor(creatorPid, uid, id());
+    mTrackMetrics.logConstructor(creatorPid,
+        VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(identity.uid)), id());
 }
 
 AudioFlinger::MmapThread::MmapTrack::~MmapTrack()
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 9132086..b0b0179 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -21,6 +21,7 @@
 #include <media/AudioSystem.h>
 #include <media/AudioPolicy.h>
 #include <media/DeviceDescriptorBase.h>
+#include <android/media/permission/Identity.h>
 #include <utils/String8.h>
 
 namespace android {
@@ -122,7 +123,7 @@
                                         audio_io_handle_t *output,
                                         audio_session_t session,
                                         audio_stream_type_t *stream,
-                                        uid_t uid,
+                                        const media::permission::Identity& identity,
                                         const audio_config_t *config,
                                         audio_output_flags_t *flags,
                                         audio_port_handle_t *selectedDeviceId,
@@ -141,7 +142,7 @@
                                      audio_io_handle_t *input,
                                      audio_unique_id_t riid,
                                      audio_session_t session,
-                                     uid_t uid,
+                                     const media::permission::Identity& identity,
                                      const audio_config_base_t *config,
                                      audio_input_flags_t flags,
                                      audio_port_handle_t *selectedDeviceId,
diff --git a/services/audiopolicy/fuzzer/Android.bp b/services/audiopolicy/fuzzer/Android.bp
index 5dbcebd..38bdedc 100644
--- a/services/audiopolicy/fuzzer/Android.bp
+++ b/services/audiopolicy/fuzzer/Android.bp
@@ -50,6 +50,7 @@
         "libbinder",
         "libaudiopolicy",
         "libaudiopolicymanagerdefault",
+        "media_permission-aidl-cpp",
     ],
     static_libs: [
         "android.hardware.audio.common@7.0-enums",
diff --git a/services/audiopolicy/fuzzer/audiopolicy_fuzzer.cpp b/services/audiopolicy/fuzzer/audiopolicy_fuzzer.cpp
index 692ce08..1177b95 100644
--- a/services/audiopolicy/fuzzer/audiopolicy_fuzzer.cpp
+++ b/services/audiopolicy/fuzzer/audiopolicy_fuzzer.cpp
@@ -26,6 +26,7 @@
 
 #include <Serializer.h>
 #include <android-base/file.h>
+#include <android/media/permission/Identity.h>
 #include <libxml/parser.h>
 #include <libxml/xinclude.h>
 #include <media/AudioPolicy.h>
@@ -46,6 +47,8 @@
 using namespace ::android::audio::policy::configuration::V7_0;
 }
 
+using media::permission::Identity;
+
 static const std::vector<audio_format_t> kAudioFormats = [] {
     std::vector<audio_format_t> result;
     for (const auto enumVal : xsdc_enum_range<xsd::AudioFormat>{}) {
@@ -246,7 +249,10 @@
     *portId = AUDIO_PORT_HANDLE_NONE;
     AudioPolicyInterface::output_type_t outputType;
 
-    if (mManager->getOutputForAttr(&attr, output, AUDIO_SESSION_NONE, &stream, 0 /*uid*/, &config,
+    // TODO b/182392769: use identity util
+    Identity i;
+    i.uid = 0;
+    if (mManager->getOutputForAttr(&attr, output, AUDIO_SESSION_NONE, &stream, i, &config,
                                    &flags, selectedDeviceId, portId, {}, &outputType) != OK) {
         return false;
     }
@@ -270,7 +276,9 @@
     *portId = AUDIO_PORT_HANDLE_NONE;
     AudioPolicyInterface::input_type_t inputType;
 
-    if (mManager->getInputForAttr(&attr, &input, riid, AUDIO_SESSION_NONE, 0 /*uid*/, &config,
+    Identity i;
+    i.uid = 0;
+    if (mManager->getInputForAttr(&attr, &input, riid, AUDIO_SESSION_NONE, i, &config,
                                   flags, selectedDeviceId, &inputType, portId) != OK) {
         return false;
     }
diff --git a/services/audiopolicy/managerdefault/Android.bp b/services/audiopolicy/managerdefault/Android.bp
index 5572beb..b111db4 100644
--- a/services/audiopolicy/managerdefault/Android.bp
+++ b/services/audiopolicy/managerdefault/Android.bp
@@ -34,6 +34,8 @@
         // a dependency on it in the device makefile. There will be no build time
         // conflict with libaudiopolicyenginedefault.
         "libaudiopolicyenginedefault",
+        "media_permission-aidl-cpp",
+        "libaudioclient_aidl_conversion",
     ],
 
     header_libs: [
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 6b664dd..a91e6c1 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -52,6 +52,8 @@
 
 namespace android {
 
+using media::permission::Identity;
+
 //FIXME: workaround for truncated touch sounds
 // to be removed when the problem is handled by system UI
 #define TOUCH_SOUND_FIXED_DELAY_MS 100
@@ -1130,7 +1132,7 @@
                                               audio_io_handle_t *output,
                                               audio_session_t session,
                                               audio_stream_type_t *stream,
-                                              uid_t uid,
+                                              const Identity& identity,
                                               const audio_config_t *config,
                                               audio_output_flags_t *flags,
                                               audio_port_handle_t *selectedDeviceId,
@@ -1142,6 +1144,8 @@
     if (*portId != AUDIO_PORT_HANDLE_NONE) {
         return INVALID_OPERATION;
     }
+    const uid_t uid = VALUE_OR_RETURN_STATUS(
+        aidl2legacy_int32_t_uid_t(identity.uid));
     const audio_port_handle_t requestedPortId = *selectedDeviceId;
     audio_attributes_t resultAttr;
     bool isRequestedDeviceForExclusiveUse = false;
@@ -2110,7 +2114,7 @@
                                              audio_io_handle_t *input,
                                              audio_unique_id_t riid,
                                              audio_session_t session,
-                                             uid_t uid,
+                                             const Identity& identity,
                                              const audio_config_base_t *config,
                                              audio_input_flags_t flags,
                                              audio_port_handle_t *selectedDeviceId,
@@ -2129,6 +2133,7 @@
     sp<AudioInputDescriptor> inputDesc;
     sp<RecordClientDescriptor> clientDesc;
     audio_port_handle_t requestedDeviceId = *selectedDeviceId;
+    uid_t uid = VALUE_OR_RETURN_STATUS(aidl2legacy_int32_t_uid_t(identity.uid));
     bool isSoundTrigger;
 
     // The supplied portId must be AUDIO_PORT_HANDLE_NONE
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index bdf82ef..1757187 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -116,7 +116,7 @@
                                   audio_io_handle_t *output,
                                   audio_session_t session,
                                   audio_stream_type_t *stream,
-                                  uid_t uid,
+                                  const media::permission::Identity& identity,
                                   const audio_config_t *config,
                                   audio_output_flags_t *flags,
                                   audio_port_handle_t *selectedDeviceId,
@@ -130,7 +130,7 @@
                                          audio_io_handle_t *input,
                                          audio_unique_id_t riid,
                                          audio_session_t session,
-                                         uid_t uid,
+                                         const media::permission::Identity& identity,
                                          const audio_config_base_t *config,
                                          audio_input_flags_t flags,
                                          audio_port_handle_t *selectedDeviceId,
diff --git a/services/audiopolicy/service/Android.bp b/services/audiopolicy/service/Android.bp
index 439f9f0..d5ba756 100644
--- a/services/audiopolicy/service/Android.bp
+++ b/services/audiopolicy/service/Android.bp
@@ -44,10 +44,12 @@
         "audiopolicy-aidl-cpp",
         "audiopolicy-types-aidl-cpp",
         "capture_state_listener-aidl-cpp",
+        "media_permission-aidl-cpp",
     ],
 
     static_libs: [
         "libaudiopolicycomponents",
+        "media_permission-aidl-cpp",
     ],
 
     header_libs: [
@@ -66,5 +68,6 @@
 
     export_shared_lib_headers: [
         "libsensorprivacy",
+        "media_permission-aidl-cpp",
     ],
 }
diff --git a/services/audiopolicy/service/AudioPolicyEffects.cpp b/services/audiopolicy/service/AudioPolicyEffects.cpp
index 5dac55b..8426a77 100644
--- a/services/audiopolicy/service/AudioPolicyEffects.cpp
+++ b/services/audiopolicy/service/AudioPolicyEffects.cpp
@@ -35,6 +35,8 @@
 
 namespace android {
 
+using media::permission::Identity;
+
 // ----------------------------------------------------------------------------
 // AudioPolicyEffects Implementation
 // ----------------------------------------------------------------------------
@@ -121,7 +123,9 @@
         Vector <EffectDesc *> effects = mInputSources.valueAt(index)->mEffects;
         for (size_t i = 0; i < effects.size(); i++) {
             EffectDesc *effect = effects[i];
-            sp<AudioEffect> fx = new AudioEffect(String16("android"));
+            Identity identity;
+            identity.packageName = "android";
+            sp<AudioEffect> fx = new AudioEffect(identity);
             fx->set(NULL, &effect->mUuid, -1, 0, 0, audioSession, input);
             status_t status = fx->initCheck();
             if (status != NO_ERROR && status != ALREADY_EXISTS) {
@@ -270,7 +274,9 @@
         Vector <EffectDesc *> effects = mOutputStreams.valueAt(index)->mEffects;
         for (size_t i = 0; i < effects.size(); i++) {
             EffectDesc *effect = effects[i];
-            sp<AudioEffect> fx = new AudioEffect(String16("android"));
+            Identity identity;
+            identity.packageName = "android";
+            sp<AudioEffect> fx = new AudioEffect(identity);
             fx->set(NULL, &effect->mUuid, 0, 0, 0, audioSession, output);
             status_t status = fx->initCheck();
             if (status != NO_ERROR && status != ALREADY_EXISTS) {
@@ -970,7 +976,9 @@
     for (const auto& deviceEffectsIter : mDeviceEffects) {
         const auto& deviceEffects =  deviceEffectsIter.second;
         for (const auto& effectDesc : deviceEffects->mEffectDescriptors->mEffects) {
-            sp<AudioEffect> fx = new AudioEffect(String16("android"));
+            Identity identity;
+            identity.packageName = "android";
+            sp<AudioEffect> fx = new AudioEffect(identity);
             fx->set(EFFECT_UUID_NULL, &effectDesc->mUuid, 0, nullptr,
                     nullptr, AUDIO_SESSION_DEVICE, AUDIO_IO_HANDLE_NONE,
                     AudioDeviceTypeAddr{deviceEffects->getDeviceType(),
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 07122cc..bf8f2ee 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -25,6 +25,7 @@
 #include <media/MediaMetricsItem.h>
 #include <media/PolicyAidlConversion.h>
 #include <utils/Log.h>
+#include <android/media/permission/Identity.h>
 
 #define VALUE_OR_RETURN_BINDER_STATUS(x) \
     ({ auto _tmp = (x); \
@@ -42,6 +43,7 @@
 namespace android {
 using binder::Status;
 using aidl_utils::binderStatusFromStatusT;
+using media::permission::Identity;
 
 const std::vector<audio_usage_t>& SYSTEM_USAGES = {
     AUDIO_USAGE_CALL_ASSISTANT,
@@ -62,15 +64,15 @@
 }
 
 status_t AudioPolicyService::validateUsage(audio_usage_t usage) {
-     return validateUsage(usage, IPCThreadState::self()->getCallingPid(),
-        IPCThreadState::self()->getCallingUid());
+     return validateUsage(usage, getCallingIdentity());
 }
 
-status_t AudioPolicyService::validateUsage(audio_usage_t usage, pid_t pid, uid_t uid) {
+status_t AudioPolicyService::validateUsage(audio_usage_t usage, const Identity& identity) {
     if (isSystemUsage(usage)) {
         if (isSupportedSystemUsage(usage)) {
-            if (!modifyAudioRoutingAllowed(pid, uid)) {
-                ALOGE("permission denied: modify audio routing not allowed for uid %d", uid);
+            if (!modifyAudioRoutingAllowed(identity)) {
+                ALOGE(("permission denied: modify audio routing not allowed "
+                       "for identity %s"), identity.toString().c_str());
                 return PERMISSION_DENIED;
             }
         } else {
@@ -276,8 +278,7 @@
 
 Status AudioPolicyService::getOutputForAttr(const media::AudioAttributesInternal& attrAidl,
                                             int32_t sessionAidl,
-                                            int32_t pidAidl,
-                                            int32_t uidAidl,
+                                            const Identity& identity,
                                             const media::AudioConfig& configAidl,
                                             int32_t flagsAidl,
                                             int32_t selectedDeviceIdAidl,
@@ -288,8 +289,6 @@
     audio_session_t session = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_int32_t_audio_session_t(sessionAidl));
     audio_stream_type_t stream = AUDIO_STREAM_DEFAULT;
-    pid_t pid = VALUE_OR_RETURN_BINDER_STATUS(aidl2legacy_int32_t_pid_t(pidAidl));
-    uid_t uid = VALUE_OR_RETURN_BINDER_STATUS(aidl2legacy_int32_t_uid_t(uidAidl));
     audio_config_t config = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_AudioConfig_audio_config_t(configAidl));
     audio_output_flags_t flags = VALUE_OR_RETURN_BINDER_STATUS(
@@ -307,22 +306,28 @@
 
     RETURN_IF_BINDER_ERROR(
             binderStatusFromStatusT(AudioValidator::validateAudioAttributes(attr, "68953950")));
-    RETURN_IF_BINDER_ERROR(binderStatusFromStatusT(validateUsage(attr.usage, pid, uid)));
+    RETURN_IF_BINDER_ERROR(binderStatusFromStatusT(validateUsage(attr.usage, identity)));
 
     ALOGV("%s()", __func__);
     Mutex::Autolock _l(mLock);
 
+    // TODO b/182392553: refactor or remove
+    Identity adjIdentity = identity;
     const uid_t callingUid = IPCThreadState::self()->getCallingUid();
-    if (!isAudioServerOrMediaServerUid(callingUid) || uid == (uid_t)-1) {
-        ALOGW_IF(uid != (uid_t)-1 && uid != callingUid,
-                "%s uid %d tried to pass itself off as %d", __func__, callingUid, uid);
-        uid = callingUid;
+    if (!isAudioServerOrMediaServerUid(callingUid) || identity.uid == -1) {
+        int32_t callingUidAidl = VALUE_OR_RETURN_BINDER_STATUS(
+            legacy2aidl_uid_t_int32_t(callingUid));
+        ALOGW_IF(identity.uid != -1 && identity.uid != callingUidAidl,
+                "%s uid %d tried to pass itself off as %d", __func__,
+                callingUidAidl, identity.uid);
+        adjIdentity.uid = callingUidAidl;
     }
-    if (!mPackageManager.allowPlaybackCapture(uid)) {
+    if (!mPackageManager.allowPlaybackCapture(VALUE_OR_RETURN_BINDER_STATUS(
+        aidl2legacy_int32_t_uid_t(adjIdentity.uid)))) {
         attr.flags = static_cast<audio_flags_mask_t>(attr.flags | AUDIO_FLAG_NO_MEDIA_PROJECTION);
     }
     if (((attr.flags & (AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY|AUDIO_FLAG_BYPASS_MUTE)) != 0)
-            && !bypassInterruptionPolicyAllowed(pid, uid)) {
+            && !bypassInterruptionPolicyAllowed(identity)) {
         attr.flags = static_cast<audio_flags_mask_t>(
                 attr.flags & ~(AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY|AUDIO_FLAG_BYPASS_MUTE));
     }
@@ -330,7 +335,7 @@
     AudioPolicyInterface::output_type_t outputType;
     status_t result = mAudioPolicyManager->getOutputForAttr(&attr, &output, session,
                                                             &stream,
-                                                            uid,
+                                                            adjIdentity,
                                                             &config,
                                                             &flags, &selectedDeviceId, &portId,
                                                             &secondaryOutputs,
@@ -343,16 +348,16 @@
         case AudioPolicyInterface::API_OUTPUT_LEGACY:
             break;
         case AudioPolicyInterface::API_OUTPUT_TELEPHONY_TX:
-            if (!modifyPhoneStateAllowed(pid, uid)) {
+            if (!modifyPhoneStateAllowed(adjIdentity)) {
                 ALOGE("%s() permission denied: modify phone state not allowed for uid %d",
-                    __func__, uid);
+                    __func__, adjIdentity.uid);
                 result = PERMISSION_DENIED;
             }
             break;
         case AudioPolicyInterface::API_OUT_MIX_PLAYBACK:
-            if (!modifyAudioRoutingAllowed(pid, uid)) {
+            if (!modifyAudioRoutingAllowed(adjIdentity)) {
                 ALOGE("%s() permission denied: modify audio routing not allowed for uid %d",
-                    __func__, uid);
+                    __func__, adjIdentity.uid);
                 result = PERMISSION_DENIED;
             }
             break;
@@ -365,8 +370,8 @@
 
     if (result == NO_ERROR) {
         sp<AudioPlaybackClient> client =
-                new AudioPlaybackClient(attr, output, uid, pid, session, portId, selectedDeviceId,
-                                        stream);
+                new AudioPlaybackClient(attr, output, adjIdentity, session,
+                    portId, selectedDeviceId, stream);
         mAudioPlaybackClients.add(portId, client);
 
         _aidl_return->output = VALUE_OR_RETURN_BINDER_STATUS(
@@ -502,9 +507,7 @@
                                            int32_t inputAidl,
                                            int32_t riidAidl,
                                            int32_t sessionAidl,
-                                           int32_t pidAidl,
-                                           int32_t uidAidl,
-                                           const std::string& opPackageNameAidl,
+                                           const Identity& identity,
                                            const media::AudioConfigBase& configAidl,
                                            int32_t flagsAidl,
                                            int32_t selectedDeviceIdAidl,
@@ -517,10 +520,6 @@
             aidl2legacy_int32_t_audio_unique_id_t(riidAidl));
     audio_session_t session = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_int32_t_audio_session_t(sessionAidl));
-    pid_t pid = VALUE_OR_RETURN_BINDER_STATUS(aidl2legacy_int32_t_pid_t(pidAidl));
-    uid_t uid = VALUE_OR_RETURN_BINDER_STATUS(aidl2legacy_int32_t_uid_t(uidAidl));
-    String16 opPackageName = VALUE_OR_RETURN_BINDER_STATUS(
-            aidl2legacy_string_view_String16(opPackageNameAidl));
     audio_config_base_t config = VALUE_OR_RETURN_BINDER_STATUS(
             aidl2legacy_AudioConfigBase_audio_config_base_t(configAidl));
     audio_input_flags_t flags = VALUE_OR_RETURN_BINDER_STATUS(
@@ -536,7 +535,6 @@
 
     RETURN_IF_BINDER_ERROR(
             binderStatusFromStatusT(AudioValidator::validateAudioAttributes(attr, "68953950")));
-    RETURN_IF_BINDER_ERROR(binderStatusFromStatusT(validateUsage(attr.usage, pid, uid)));
 
     audio_source_t inputSource = attr.source;
     if (inputSource == AUDIO_SOURCE_DEFAULT) {
@@ -552,34 +550,42 @@
         return binderStatusFromStatusT(BAD_VALUE);
     }
 
-    bool updatePid = (pid == -1);
-    const uid_t callingUid = IPCThreadState::self()->getCallingUid();
+    // Make sure identity represents the current caller
+    Identity adjIdentity = identity;
+    // TODO b/182392553: refactor or remove
+    bool updatePid = (identity.pid == -1);
+    const uid_t callingUid =IPCThreadState::self()->getCallingUid();
+    const uid_t currentUid = VALUE_OR_RETURN_BINDER_STATUS(aidl2legacy_int32_t_uid_t(identity.uid));
     if (!isAudioServerOrMediaServerUid(callingUid)) {
-        ALOGW_IF(uid != (uid_t)-1 && uid != callingUid,
-                "%s uid %d tried to pass itself off as %d", __FUNCTION__, callingUid, uid);
-        uid = callingUid;
+        ALOGW_IF(currentUid != (uid_t)-1 && currentUid != callingUid,
+                "%s uid %d tried to pass itself off as %d", __FUNCTION__, callingUid,
+                currentUid);
+        adjIdentity.uid = VALUE_OR_RETURN_BINDER_STATUS(legacy2aidl_uid_t_int32_t(callingUid));
         updatePid = true;
     }
 
     if (updatePid) {
-        const pid_t callingPid = IPCThreadState::self()->getCallingPid();
-        ALOGW_IF(pid != (pid_t)-1 && pid != callingPid,
+        const int32_t callingPid = VALUE_OR_RETURN_BINDER_STATUS(legacy2aidl_pid_t_int32_t(
+            IPCThreadState::self()->getCallingPid()));
+        ALOGW_IF(identity.pid != -1 && identity.pid != callingPid,
                  "%s uid %d pid %d tried to pass itself off as pid %d",
-                 __func__, callingUid, callingPid, pid);
-        pid = callingPid;
+                 __func__, adjIdentity.uid, callingPid, identity.pid);
+        adjIdentity.pid = callingPid;
     }
 
+    RETURN_IF_BINDER_ERROR(binderStatusFromStatusT(validateUsage(attr.usage, adjIdentity)));
+
     // check calling permissions.
     // Capturing from FM_TUNER source is controlled by captureTunerAudioInputAllowed() and
     // captureAudioOutputAllowed() (deprecated) as this does not affect users privacy
     // as does capturing from an actual microphone.
-    if (!(recordingAllowed(opPackageName, pid, uid) || attr.source == AUDIO_SOURCE_FM_TUNER)) {
-        ALOGE("%s permission denied: recording not allowed for uid %d pid %d",
-                __func__, uid, pid);
+    if (!(recordingAllowed(adjIdentity) || attr.source == AUDIO_SOURCE_FM_TUNER)) {
+        ALOGE("%s permission denied: recording not allowed for %s",
+                __func__, adjIdentity.toString().c_str());
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
 
-    bool canCaptureOutput = captureAudioOutputAllowed(pid, uid);
+    bool canCaptureOutput = captureAudioOutputAllowed(adjIdentity);
     if ((inputSource == AUDIO_SOURCE_VOICE_UPLINK ||
         inputSource == AUDIO_SOURCE_VOICE_DOWNLINK ||
         inputSource == AUDIO_SOURCE_VOICE_CALL ||
@@ -589,12 +595,12 @@
     }
 
     if (inputSource == AUDIO_SOURCE_FM_TUNER
-        && !captureTunerAudioInputAllowed(pid, uid)
+        && !captureTunerAudioInputAllowed(adjIdentity)
         && !canCaptureOutput) {
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
 
-    bool canCaptureHotword = captureHotwordAllowed(opPackageName, pid, uid);
+    bool canCaptureHotword = captureHotwordAllowed(adjIdentity);
     if ((inputSource == AUDIO_SOURCE_HOTWORD) && !canCaptureHotword) {
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
@@ -602,7 +608,7 @@
     if (((flags & AUDIO_INPUT_FLAG_HW_HOTWORD) != 0)
             && !canCaptureHotword) {
         ALOGE("%s: permission denied: hotword mode not allowed"
-              " for uid %d pid %d", __func__, uid, pid);
+              " for uid %d pid %d", __func__, adjIdentity.uid, adjIdentity.pid);
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
 
@@ -615,10 +621,11 @@
         {
             AutoCallerClear acc;
             // the audio_in_acoustics_t parameter is ignored by get_input()
-            status = mAudioPolicyManager->getInputForAttr(&attr, &input, riid, session, uid,
-                                                          &config,
+            status = mAudioPolicyManager->getInputForAttr(&attr, &input, riid, session,
+                                                          adjIdentity, &config,
                                                           flags, &selectedDeviceId,
                                                           &inputType, &portId);
+
         }
         audioPolicyEffects = mAudioPolicyEffects;
 
@@ -639,7 +646,7 @@
                 }
                 break;
             case AudioPolicyInterface::API_INPUT_MIX_EXT_POLICY_REROUTE:
-                if (!modifyAudioRoutingAllowed(pid, uid)) {
+                if (!modifyAudioRoutingAllowed(adjIdentity)) {
                     ALOGE("getInputForAttr() permission denied: modify audio routing not allowed");
                     status = PERMISSION_DENIED;
                 }
@@ -659,8 +666,8 @@
             return binderStatusFromStatusT(status);
         }
 
-        sp<AudioRecordClient> client = new AudioRecordClient(attr, input, uid, pid, session, portId,
-                                                             selectedDeviceId, opPackageName,
+        sp<AudioRecordClient> client = new AudioRecordClient(attr, input, session, portId,
+                                                             selectedDeviceId, adjIdentity,
                                                              canCaptureOutput, canCaptureHotword);
         mAudioRecordClients.add(portId, client);
     }
@@ -711,12 +718,15 @@
         client = mAudioRecordClients.valueAt(index);
     }
 
+    std::stringstream msg;
+    msg << "Audio recording on session " << client->session;
+
     // check calling permissions
-    if (!(startRecording(client->opPackageName, client->pid, client->uid,
-            client->attributes.source)
+    if (!(startRecording(client->identity, String16(msg.str().c_str()),
+        client->attributes.source)
             || client->attributes.source == AUDIO_SOURCE_FM_TUNER)) {
-        ALOGE("%s permission denied: recording not allowed for uid %d pid %d",
-                __func__, client->uid, client->pid);
+        ALOGE("%s permission denied: recording not allowed for identity %s",
+                __func__, client->identity.toString().c_str());
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
 
@@ -760,11 +770,13 @@
             item->setCString(kAudioPolicyRqstSrc,
                              toString(client->attributes.source).c_str());
             item->setInt32(kAudioPolicyRqstSession, client->session);
-            if (client->opPackageName.size() != 0) {
+            if (client->identity.packageName.has_value() &&
+                client->identity.packageName.value().size() != 0) {
                 item->setCString(kAudioPolicyRqstPkg,
-                                 std::string(String8(client->opPackageName).string()).c_str());
+                    client->identity.packageName.value().c_str());
             } else {
-                item->setCString(kAudioPolicyRqstPkg, std::to_string(client->uid).c_str());
+                item->setCString(kAudioPolicyRqstPkg,
+                    std::to_string(client->identity.uid).c_str());
             }
             item->setCString(
                     kAudioPolicyRqstDevice, getDeviceTypeStrForPortId(client->deviceId).c_str());
@@ -780,12 +792,13 @@
                     item->setCString(kAudioPolicyActiveSrc,
                                      toString(other->attributes.source).c_str());
                     item->setInt32(kAudioPolicyActiveSession, other->session);
-                    if (other->opPackageName.size() != 0) {
+                    if (other->identity.packageName.has_value() &&
+                        other->identity.packageName.value().size() != 0) {
                         item->setCString(kAudioPolicyActivePkg,
-                             std::string(String8(other->opPackageName).string()).c_str());
+                            other->identity.packageName.value().c_str());
                     } else {
-                        item->setCString(kAudioPolicyRqstPkg,
-                                         std::to_string(other->uid).c_str());
+                        item->setCString(kAudioPolicyRqstPkg, std::to_string(
+                            other->identity.uid).c_str());
                     }
                     item->setCString(kAudioPolicyActiveDevice,
                                      getDeviceTypeStrForPortId(other->deviceId).c_str());
@@ -801,8 +814,7 @@
         client->active = false;
         client->startTimeNs = 0;
         updateUidStates_l();
-        finishRecording(client->opPackageName, client->uid,
-                        client->attributes.source);
+        finishRecording(client->identity, client->attributes.source);
     }
 
     return binderStatusFromStatusT(status);
@@ -831,8 +843,7 @@
     updateUidStates_l();
 
     // finish the recording app op
-    finishRecording(client->opPackageName, client->uid,
-                    client->attributes.source);
+    finishRecording(client->identity, client->attributes.source);
     AutoCallerClear acc;
     return binderStatusFromStatusT(mAudioPolicyManager->stopInput(portId));
 }
@@ -1629,15 +1640,15 @@
     bool needCaptureMediaOutput = std::any_of(mixes.begin(), mixes.end(), [](auto& mix) {
             return mix.mAllowPrivilegedMediaPlaybackCapture; });
 
-    const uid_t callingUid = IPCThreadState::self()->getCallingUid();
-    const pid_t callingPid = IPCThreadState::self()->getCallingPid();
+    const Identity identity = getCallingIdentity();
 
-    if (needCaptureMediaOutput && !captureMediaOutputAllowed(callingPid, callingUid)) {
+
+    if (needCaptureMediaOutput && !captureMediaOutputAllowed(identity)) {
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
 
     if (needCaptureVoiceCommunicationOutput &&
-        !captureVoiceCommunicationOutputAllowed(callingPid, callingUid)) {
+        !captureVoiceCommunicationOutputAllowed(identity)) {
         return binderStatusFromStatusT(PERMISSION_DENIED);
     }
 
diff --git a/services/audiopolicy/service/AudioPolicyService.cpp b/services/audiopolicy/service/AudioPolicyService.cpp
index 90ad81e..35b69d0 100644
--- a/services/audiopolicy/service/AudioPolicyService.cpp
+++ b/services/audiopolicy/service/AudioPolicyService.cpp
@@ -595,23 +595,24 @@
 
     for (size_t i =0; i < mAudioRecordClients.size(); i++) {
         sp<AudioRecordClient> current = mAudioRecordClients[i];
+        uid_t currentUid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(current->identity.uid));
         if (!current->active || (!isVirtualSource(current->attributes.source)
-                && isUserSensorPrivacyEnabledForUid(current->uid))) {
+                && isUserSensorPrivacyEnabledForUid(currentUid))) {
             continue;
         }
 
-        app_state_t appState = apmStatFromAmState(mUidPolicy->getUidState(current->uid));
+        app_state_t appState = apmStatFromAmState(mUidPolicy->getUidState(currentUid));
         // clients which app is in IDLE state are not eligible for top active or
         // latest active
         if (appState == APP_STATE_IDLE) {
             continue;
         }
 
-        bool isAccessibility = mUidPolicy->isA11yUid(current->uid);
+        bool isAccessibility = mUidPolicy->isA11yUid(currentUid);
         // Clients capturing for Accessibility services or virtual sources are not considered
         // for top or latest active to avoid masking regular clients started before
         if (!isAccessibility && !isVirtualSource(current->attributes.source)) {
-            bool isAssistant = mUidPolicy->isAssistantUid(current->uid);
+            bool isAssistant = mUidPolicy->isAssistantUid(currentUid);
             bool isPrivacySensitive =
                     (current->attributes.flags & AUDIO_FLAG_CAPTURE_PRIVATE) != 0;
 
@@ -639,9 +640,11 @@
                     // if audio mode is IN_COMMUNICATION, make sure the audio mode owner
                     // is marked latest sensitive active even if another app qualifies.
                     if (current->startTimeNs > latestSensitiveStartNs
-                            || (isInCommunication && current->uid == mPhoneStateOwnerUid)) {
+                            || (isInCommunication && currentUid == mPhoneStateOwnerUid)) {
                         if (!isInCommunication || latestSensitiveActiveOrComm == nullptr
-                                || latestSensitiveActiveOrComm->uid != mPhoneStateOwnerUid) {
+                                || VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(
+                                    latestSensitiveActiveOrComm->identity.uid))
+                                        != mPhoneStateOwnerUid) {
                             latestSensitiveActiveOrComm = current;
                             latestSensitiveStartNs = current->startTimeNs;
                         }
@@ -658,7 +661,7 @@
         if (current->attributes.source != AUDIO_SOURCE_HOTWORD) {
             onlyHotwordActive = false;
         }
-        if (current->uid == mPhoneStateOwnerUid) {
+        if (currentUid == mPhoneStateOwnerUid) {
             isPhoneStateOwnerActive = true;
         }
     }
@@ -674,7 +677,9 @@
     } else if (latestSensitiveActiveOrComm != nullptr) {
         // if audio mode is IN_COMMUNICATION, favor audio mode owner over an app with
         // foreground UI in case both are capturing with privacy sensitive flag.
-        if (isInCommunication && latestSensitiveActiveOrComm->uid == mPhoneStateOwnerUid) {
+        uid_t latestActiveUid = VALUE_OR_FATAL(
+            aidl2legacy_int32_t_uid_t(latestSensitiveActiveOrComm->identity.uid));
+        if (isInCommunication && latestActiveUid == mPhoneStateOwnerUid) {
             topSensitiveActive = latestSensitiveActiveOrComm;
             topSensitiveStartNs = latestSensitiveStartNs;
         }
@@ -692,20 +697,25 @@
 
     for (size_t i =0; i < mAudioRecordClients.size(); i++) {
         sp<AudioRecordClient> current = mAudioRecordClients[i];
+        uid_t currentUid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(
+            current->identity.uid));
         if (!current->active) {
             continue;
         }
 
         audio_source_t source = current->attributes.source;
-        bool isTopOrLatestActive = topActive == nullptr ? false : current->uid == topActive->uid;
-        bool isTopOrLatestSensitive = topSensitiveActive == nullptr ?
-                                 false : current->uid == topSensitiveActive->uid;
+        bool isTopOrLatestActive = topActive == nullptr ? false :
+            current->identity.uid == topActive->identity.uid;
+        bool isTopOrLatestSensitive = topSensitiveActive == nullptr ? false :
+            current->identity.uid == topSensitiveActive->identity.uid;
 
         auto canCaptureIfInCallOrCommunication = [&](const auto &recordClient) REQUIRES(mLock) {
+            uid_t recordUid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(
+                recordClient->identity.uid));
             bool canCaptureCall = recordClient->canCaptureOutput;
             bool canCaptureCommunication = recordClient->canCaptureOutput
                 || !isPhoneStateOwnerActive
-                || recordClient->uid == mPhoneStateOwnerUid;
+                || recordUid == mPhoneStateOwnerUid;
             return !(isInCall && !canCaptureCall)
                 && !(isInCommunication && !canCaptureCommunication);
         };
@@ -724,10 +734,10 @@
         if (isVirtualSource(source)) {
             // Allow capture for virtual (remote submix, call audio TX or RX...) sources
             allowCapture = true;
-        } else if (isUserSensorPrivacyEnabledForUid(current->uid)) {
+        } else if (isUserSensorPrivacyEnabledForUid(currentUid)) {
             // If sensor privacy is enabled, don't allow capture
             allowCapture = false;
-        } else if (mUidPolicy->isAssistantUid(current->uid)) {
+        } else if (mUidPolicy->isAssistantUid(currentUid)) {
             // For assistant allow capture if:
             //     An accessibility service is on TOP or a RTT call is active
             //            AND the source is VOICE_RECOGNITION or HOTWORD
@@ -747,7 +757,7 @@
                     allowCapture = true;
                 }
             }
-        } else if (mUidPolicy->isA11yUid(current->uid)) {
+        } else if (mUidPolicy->isA11yUid(currentUid)) {
             // For accessibility service allow capture if:
             //     The assistant is not on TOP
             //         AND there is no active privacy sensitive capture or call
@@ -773,7 +783,7 @@
                     && canCaptureIfInCallOrCommunication(current)) {
                 allowCapture = true;
             }
-        } else if (mUidPolicy->isCurrentImeUid(current->uid)) {
+        } else if (mUidPolicy->isCurrentImeUid(currentUid)) {
             // For current InputMethodService allow capture if:
             //     A RTT call is active AND the source is VOICE_RECOGNITION
             if (rttCallActive && source == AUDIO_SOURCE_VOICE_RECOGNITION) {
@@ -781,7 +791,7 @@
             }
         }
         setAppState_l(current->portId,
-                      allowCapture ? apmStatFromAmState(mUidPolicy->getUidState(current->uid)) :
+                      allowCapture ? apmStatFromAmState(mUidPolicy->getUidState(currentUid)) :
                                 APP_STATE_IDLE);
     }
 }
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index a11b2cc..15846ec 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -38,6 +38,8 @@
 #include "CaptureStateNotifier.h"
 #include <AudioPolicyInterface.h>
 #include <android/hardware/BnSensorPrivacyListener.h>
+#include <android/media/permission/Identity.h>
+
 #include <unordered_map>
 
 namespace android {
@@ -79,15 +81,16 @@
                                media::AudioPolicyForcedConfig* _aidl_return) override;
     binder::Status getOutput(media::AudioStreamType stream, int32_t* _aidl_return) override;
     binder::Status getOutputForAttr(const media::AudioAttributesInternal& attr, int32_t session,
-                                    int32_t pid, int32_t uid, const media::AudioConfig& config,
+                                    const media::permission::Identity &identity,
+                                    const media::AudioConfig& config,
                                     int32_t flags, int32_t selectedDeviceId,
                                     media::GetOutputForAttrResponse* _aidl_return) override;
     binder::Status startOutput(int32_t portId) override;
     binder::Status stopOutput(int32_t portId) override;
     binder::Status releaseOutput(int32_t portId) override;
     binder::Status getInputForAttr(const media::AudioAttributesInternal& attr, int32_t input,
-                                   int32_t riid, int32_t session, int32_t pid, int32_t uid,
-                                   const std::string& opPackageName,
+                                   int32_t riid, int32_t session,
+                                   const media::permission::Identity &identity,
                                    const media::AudioConfigBase& config, int32_t flags,
                                    int32_t selectedDeviceId,
                                    media::GetInputForAttrResponse* _aidl_return) override;
@@ -339,7 +342,7 @@
 
     bool isSupportedSystemUsage(audio_usage_t usage);
     status_t validateUsage(audio_usage_t usage);
-    status_t validateUsage(audio_usage_t usage, pid_t pid, uid_t uid);
+    status_t validateUsage(audio_usage_t usage, const media::permission::Identity& identity);
 
     bool isUserSensorPrivacyEnabledForUid(uid_t uid);
 
@@ -784,18 +787,18 @@
     class AudioClient : public virtual RefBase {
     public:
                 AudioClient(const audio_attributes_t attributes,
-                            const audio_io_handle_t io, uid_t uid, pid_t pid,
+                            const audio_io_handle_t io,
+                            const media::permission::Identity& identity,
                             const audio_session_t session,  audio_port_handle_t portId,
                             const audio_port_handle_t deviceId) :
-                                attributes(attributes), io(io), uid(uid), pid(pid),
+                                attributes(attributes), io(io), identity(identity),
                                 session(session), portId(portId), deviceId(deviceId), active(false) {}
                 ~AudioClient() override = default;
 
 
         const audio_attributes_t attributes; // source, flags ...
         const audio_io_handle_t io;          // audio HAL stream IO handle
-        const uid_t uid;                     // client UID
-        const pid_t pid;                     // client PID
+        const media::permission::Identity& identity; //client identity
         const audio_session_t session;       // audio session ID
         const audio_port_handle_t portId;
         const audio_port_handle_t deviceId;  // selected input device port ID
@@ -808,16 +811,17 @@
     class AudioRecordClient : public AudioClient {
     public:
                 AudioRecordClient(const audio_attributes_t attributes,
-                          const audio_io_handle_t io, uid_t uid, pid_t pid,
+                          const audio_io_handle_t io,
                           const audio_session_t session, audio_port_handle_t portId,
-                          const audio_port_handle_t deviceId, const String16& opPackageName,
+                          const audio_port_handle_t deviceId,
+                          const media::permission::Identity& identity,
                           bool canCaptureOutput, bool canCaptureHotword) :
-                    AudioClient(attributes, io, uid, pid, session, portId, deviceId),
-                    opPackageName(opPackageName), startTimeNs(0),
+                    AudioClient(attributes, io, identity,
+                        session, portId, deviceId), identity(identity), startTimeNs(0),
                     canCaptureOutput(canCaptureOutput), canCaptureHotword(canCaptureHotword) {}
                 ~AudioRecordClient() override = default;
 
-        const String16 opPackageName;        // client package name
+        const media::permission::Identity identity;        // identity of client
         nsecs_t startTimeNs;
         const bool canCaptureOutput;
         const bool canCaptureHotword;
@@ -829,10 +833,11 @@
     class AudioPlaybackClient : public AudioClient {
     public:
                 AudioPlaybackClient(const audio_attributes_t attributes,
-                      const audio_io_handle_t io, uid_t uid, pid_t pid,
+                      const audio_io_handle_t io, media::permission::Identity identity,
                             const audio_session_t session, audio_port_handle_t portId,
                             audio_port_handle_t deviceId, audio_stream_type_t stream) :
-                    AudioClient(attributes, io, uid, pid, session, portId, deviceId), stream(stream) {}
+                    AudioClient(attributes, io, identity, session, portId,
+                        deviceId), stream(stream) {}
                 ~AudioPlaybackClient() override = default;
 
         const audio_stream_type_t stream;
diff --git a/services/audiopolicy/tests/Android.bp b/services/audiopolicy/tests/Android.bp
index d10fcb9..f480210 100644
--- a/services/audiopolicy/tests/Android.bp
+++ b/services/audiopolicy/tests/Android.bp
@@ -25,6 +25,7 @@
         "libmedia_helper",
         "libutils",
         "libxml2",
+        "media_permission-aidl-cpp",
     ],
 
     static_libs: [
diff --git a/services/audiopolicy/tests/audiopolicymanager_tests.cpp b/services/audiopolicy/tests/audiopolicymanager_tests.cpp
index a8ede90..21ebac13 100644
--- a/services/audiopolicy/tests/audiopolicymanager_tests.cpp
+++ b/services/audiopolicy/tests/audiopolicymanager_tests.cpp
@@ -25,6 +25,7 @@
 #define LOG_TAG "APM_Test"
 #include <Serializer.h>
 #include <android-base/file.h>
+#include <android/media/permission/Identity.h>
 #include <media/AudioPolicy.h>
 #include <media/PatchBuilder.h>
 #include <media/RecordingActivityTracker.h>
@@ -39,6 +40,7 @@
 
 using namespace android;
 using testing::UnorderedElementsAre;
+using media::permission::Identity;
 
 TEST(AudioPolicyManagerTestInit, EngineFailure) {
     AudioPolicyTestClient client;
@@ -214,8 +216,11 @@
     if (!portId) portId = &localPortId;
     *portId = AUDIO_PORT_HANDLE_NONE;
     AudioPolicyInterface::output_type_t outputType;
+    // TODO b/182392769: use identity util
+    Identity i = Identity();
+    i.uid = 0;
     ASSERT_EQ(OK, mManager->getOutputForAttr(
-                    &attr, output, AUDIO_SESSION_NONE, &stream, 0 /*uid*/, &config, &flags,
+                    &attr, output, AUDIO_SESSION_NONE, &stream, i, &config, &flags,
                     selectedDeviceId, portId, {}, &outputType));
     ASSERT_NE(AUDIO_PORT_HANDLE_NONE, *portId);
     ASSERT_NE(AUDIO_IO_HANDLE_NONE, *output);
@@ -239,8 +244,11 @@
     if (!portId) portId = &localPortId;
     *portId = AUDIO_PORT_HANDLE_NONE;
     AudioPolicyInterface::input_type_t inputType;
+    // TODO b/182392769: use identity util
+    Identity i = Identity();
+    i.uid = 0;
     ASSERT_EQ(OK, mManager->getInputForAttr(
-            &attr, &input, riid, AUDIO_SESSION_NONE, 0 /*uid*/, &config, flags,
+            &attr, &input, riid, AUDIO_SESSION_NONE, i, &config, flags,
             selectedDeviceId, &inputType, portId));
     ASSERT_NE(AUDIO_PORT_HANDLE_NONE, *portId);
 }
diff --git a/services/camera/libcameraservice/Android.bp b/services/camera/libcameraservice/Android.bp
index dd37135..a0b35a8 100644
--- a/services/camera/libcameraservice/Android.bp
+++ b/services/camera/libcameraservice/Android.bp
@@ -149,11 +149,13 @@
         "android.hardware.camera.device@3.4",
         "android.hardware.camera.device@3.5",
         "android.hardware.camera.device@3.6",
-        "android.hardware.camera.device@3.7"
+        "android.hardware.camera.device@3.7",
+        "media_permission-aidl-cpp",
     ],
 
     static_libs: [
         "libbinderthreadstateutils",
+        "media_permission-aidl-cpp",
     ],
 
     export_shared_lib_headers: [
diff --git a/services/oboeservice/AAudioEndpointManager.cpp b/services/oboeservice/AAudioEndpointManager.cpp
index 407f6d5..3224cfc 100644
--- a/services/oboeservice/AAudioEndpointManager.cpp
+++ b/services/oboeservice/AAudioEndpointManager.cpp
@@ -24,6 +24,7 @@
 #include <mutex>
 #include <sstream>
 #include <utility/AAudioUtilities.h>
+#include <media/AidlConversion.h>
 
 #include "AAudioClientTracker.h"
 #include "AAudioEndpointManager.h"
@@ -182,7 +183,9 @@
             // and START calls. This will help preserve app compatibility.
             // An app can avoid having this happen by closing their streams when
             // the app is paused.
-            AAudioClientTracker::getInstance().setExclusiveEnabled(request.getProcessId(), false);
+            pid_t pid = VALUE_OR_FATAL(
+                aidl2legacy_int32_t_pid_t(request.getIdentity().pid));
+            AAudioClientTracker::getInstance().setExclusiveEnabled(pid, false);
             endpointToSteal = endpoint; // return it to caller
         }
         return nullptr;
diff --git a/services/oboeservice/AAudioService.cpp b/services/oboeservice/AAudioService.cpp
index 69e58f6..8baf8dc 100644
--- a/services/oboeservice/AAudioService.cpp
+++ b/services/oboeservice/AAudioService.cpp
@@ -22,7 +22,9 @@
 #include <iostream>
 #include <sstream>
 
+#include <android/media/permission/Identity.h>
 #include <aaudio/AAudio.h>
+#include <media/AidlConversion.h>
 #include <mediautils/ServiceUtilities.h>
 #include <utils/String16.h>
 
@@ -39,16 +41,24 @@
 #define MAX_STREAMS_PER_PROCESS   8
 #define AIDL_RETURN(x) *_aidl_return = (x); return Status::ok();
 
+#define VALUE_OR_RETURN_ILLEGAL_ARG_STATUS(x) \
+    ({ auto _tmp = (x); \
+       if (!_tmp.ok()) AIDL_RETURN(AAUDIO_ERROR_ILLEGAL_ARGUMENT); \
+       std::move(_tmp.value()); })
 
 using android::AAudioService;
+using android::media::permission::Identity;
 using binder::Status;
 
 android::AAudioService::AAudioService()
     : BnAAudioService(),
       mAdapter(this) {
-    mAudioClient.clientUid = getuid();   // TODO consider using geteuid()
-    mAudioClient.clientPid = getpid();
-    mAudioClient.packageName = String16("");
+    // TODO consider using geteuid()
+    // TODO b/182392769: use identity util
+    mAudioClient.identity.uid = VALUE_OR_FATAL(legacy2aidl_uid_t_int32_t(getuid()));
+    mAudioClient.identity.pid = VALUE_OR_FATAL(legacy2aidl_pid_t_int32_t(getpid()));
+    mAudioClient.identity.packageName = std::nullopt;
+    mAudioClient.identity.attributionTag = std::nullopt;
     AAudioClientTracker::getInstance().setAAudioService(this);
 }
 
@@ -105,8 +115,14 @@
     aaudio_sharing_mode_t sharingMode = configurationInput.getSharingMode();
 
     // Enforce limit on client processes.
-    pid_t pid = request.getProcessId();
-    if (pid != mAudioClient.clientPid) {
+    Identity callingIdentity = request.getIdentity();
+    callingIdentity.pid = VALUE_OR_RETURN_ILLEGAL_ARG_STATUS(
+        legacy2aidl_pid_t_int32_t(IPCThreadState::self()->getCallingPid()));
+    callingIdentity.uid = VALUE_OR_RETURN_ILLEGAL_ARG_STATUS(
+        legacy2aidl_uid_t_int32_t(IPCThreadState::self()->getCallingUid()));
+    pid_t pid = VALUE_OR_RETURN_ILLEGAL_ARG_STATUS(
+        aidl2legacy_int32_t_pid_t(callingIdentity.pid));
+    if (callingIdentity.pid != mAudioClient.identity.pid) {
         int32_t count = AAudioClientTracker::getInstance().getStreamCount(pid);
         if (count >= MAX_STREAMS_PER_PROCESS) {
             ALOGE("openStream(): exceeded max streams per process %d >= %d",
@@ -121,7 +137,7 @@
     }
 
     if (sharingMode == AAUDIO_SHARING_MODE_EXCLUSIVE
-        && AAudioClientTracker::getInstance().isExclusiveEnabled(request.getProcessId())) {
+        && AAudioClientTracker::getInstance().isExclusiveEnabled(pid)) {
         // only trust audioserver for in service indication
         bool inService = false;
         if (isCallerInService()) {
@@ -154,7 +170,6 @@
     } else {
         aaudio_handle_t handle = mStreamTracker.addStreamForHandle(serviceStream.get());
         serviceStream->setHandle(handle);
-        pid_t pid = request.getProcessId();
         AAudioClientTracker::getInstance().registerClientStream(pid, serviceStream);
         paramsOut.copyFrom(*serviceStream);
         *_paramsOut = std::move(paramsOut).parcelable();
@@ -266,8 +281,10 @@
 }
 
 bool AAudioService::isCallerInService() {
-    return mAudioClient.clientPid == IPCThreadState::self()->getCallingPid() &&
-        mAudioClient.clientUid == IPCThreadState::self()->getCallingUid();
+    pid_t clientPid = VALUE_OR_FATAL(aidl2legacy_int32_t_pid_t(mAudioClient.identity.pid));
+    uid_t clientUid = VALUE_OR_FATAL(aidl2legacy_int32_t_uid_t(mAudioClient.identity.uid));
+    return clientPid == IPCThreadState::self()->getCallingPid() &&
+        clientUid == IPCThreadState::self()->getCallingUid();
 }
 
 aaudio_result_t AAudioService::closeStream(sp<AAudioServiceStreamBase> serviceStream) {
@@ -290,9 +307,11 @@
         // Only allow owner or the aaudio service to access the stream.
         const uid_t callingUserId = IPCThreadState::self()->getCallingUid();
         const uid_t ownerUserId = serviceStream->getOwnerUserId();
+        const uid_t clientUid = VALUE_OR_FATAL(
+            aidl2legacy_int32_t_uid_t(mAudioClient.identity.uid));
         bool callerOwnsIt = callingUserId == ownerUserId;
-        bool serverCalling = callingUserId == mAudioClient.clientUid;
-        bool serverOwnsIt = ownerUserId == mAudioClient.clientUid;
+        bool serverCalling = callingUserId == clientUid;
+        bool serverOwnsIt = ownerUserId == clientUid;
         bool allowed = callerOwnsIt || serverCalling || serverOwnsIt;
         if (!allowed) {
             ALOGE("AAudioService: calling uid %d cannot access stream 0x%08X owned by %d",
diff --git a/services/oboeservice/AAudioServiceEndpointMMAP.cpp b/services/oboeservice/AAudioServiceEndpointMMAP.cpp
index 85b2057..556710d 100644
--- a/services/oboeservice/AAudioServiceEndpointMMAP.cpp
+++ b/services/oboeservice/AAudioServiceEndpointMMAP.cpp
@@ -73,9 +73,12 @@
 aaudio_result_t AAudioServiceEndpointMMAP::open(const aaudio::AAudioStreamRequest &request) {
     aaudio_result_t result = AAUDIO_OK;
     copyFrom(request.getConstantConfiguration());
-    mMmapClient.clientUid = request.getUserId();
-    mMmapClient.clientPid = request.getProcessId();
-    mMmapClient.packageName.setTo(String16(""));
+    mMmapClient.identity = request.getIdentity();
+    // TODO b/182392769: use identity util
+    mMmapClient.identity.uid = VALUE_OR_FATAL(
+        legacy2aidl_uid_t_int32_t(IPCThreadState::self()->getCallingUid()));
+    mMmapClient.identity.pid = VALUE_OR_FATAL(
+        legacy2aidl_pid_t_int32_t(IPCThreadState::self()->getCallingPid()));
 
     audio_format_t audioFormat = getFormat();
 
@@ -159,8 +162,8 @@
                                                           this, // callback
                                                           mMmapStream,
                                                           &mPortHandle);
-    ALOGD("%s() mMapClient.uid = %d, pid = %d => portHandle = %d\n",
-          __func__, mMmapClient.clientUid,  mMmapClient.clientPid, mPortHandle);
+    ALOGD("%s() mMapClient.identity = %s => portHandle = %d\n",
+          __func__, mMmapClient.identity.toString().c_str(), mPortHandle);
     if (status != OK) {
         // This can happen if the resource is busy or the config does
         // not match the hardware.
@@ -208,8 +211,9 @@
     setBufferCapacity(mMmapBufferinfo.buffer_size_frames);
     if (!isBufferShareable) {
         // Exclusive mode can only be used by the service because the FD cannot be shared.
-        uid_t audioServiceUid = getuid();
-        if ((mMmapClient.clientUid != audioServiceUid) &&
+        int32_t audioServiceUid =
+            VALUE_OR_FATAL(legacy2aidl_uid_t_int32_t(getuid()));
+        if ((mMmapClient.identity.uid != audioServiceUid) &&
             getSharingMode() == AAUDIO_SHARING_MODE_EXCLUSIVE) {
             ALOGW("%s() - exclusive FD cannot be used by client", __func__);
             result = AAUDIO_ERROR_UNAVAILABLE;
diff --git a/services/oboeservice/AAudioServiceStreamBase.cpp b/services/oboeservice/AAudioServiceStreamBase.cpp
index 7edc25c..694094c 100644
--- a/services/oboeservice/AAudioServiceStreamBase.cpp
+++ b/services/oboeservice/AAudioServiceStreamBase.cpp
@@ -39,6 +39,8 @@
 using namespace android;  // TODO just import names needed
 using namespace aaudio;   // TODO just import names needed
 
+using media::permission::Identity;
+
 /**
  * Base class for streams in the service.
  * @return
@@ -48,9 +50,7 @@
         : mTimestampThread("AATime")
         , mAtomicStreamTimestamp()
         , mAudioService(audioService) {
-    mMmapClient.clientUid = -1;
-    mMmapClient.clientPid = -1;
-    mMmapClient.packageName = String16("");
+    mMmapClient.identity = Identity();
 }
 
 AAudioServiceStreamBase::~AAudioServiceStreamBase() {
@@ -82,7 +82,7 @@
 
     result << "    0x" << std::setfill('0') << std::setw(8) << std::hex << mHandle
            << std::dec << std::setfill(' ') ;
-    result << std::setw(6) << mMmapClient.clientUid;
+    result << std::setw(6) << mMmapClient.identity.uid;
     result << std::setw(7) << mClientHandle;
     result << std::setw(4) << (isRunning() ? "yes" : " no");
     result << std::setw(6) << getState();
@@ -128,9 +128,12 @@
     AAudioEndpointManager &mEndpointManager = AAudioEndpointManager::getInstance();
     aaudio_result_t result = AAUDIO_OK;
 
-    mMmapClient.clientUid = request.getUserId();
-    mMmapClient.clientPid = request.getProcessId();
-    mMmapClient.packageName.setTo(String16("")); // TODO What should we do here?
+    mMmapClient.identity = request.getIdentity();
+    // TODO b/182392769: use identity util
+    mMmapClient.identity.uid = VALUE_OR_FATAL(
+        legacy2aidl_uid_t_int32_t(IPCThreadState::self()->getCallingUid()));
+    mMmapClient.identity.pid = VALUE_OR_FATAL(
+        legacy2aidl_pid_t_int32_t(IPCThreadState::self()->getCallingPid()));
 
     // Limit scope of lock to avoid recursive lock in close().
     {
diff --git a/services/oboeservice/AAudioServiceStreamBase.h b/services/oboeservice/AAudioServiceStreamBase.h
index 0f752b7..06c9f21 100644
--- a/services/oboeservice/AAudioServiceStreamBase.h
+++ b/services/oboeservice/AAudioServiceStreamBase.h
@@ -21,6 +21,7 @@
 #include <mutex>
 
 #include <android-base/thread_annotations.h>
+#include <media/AidlConversion.h>
 #include <media/AudioClient.h>
 #include <utils/RefBase.h>
 
@@ -159,11 +160,11 @@
     }
 
     uid_t getOwnerUserId() const {
-        return mMmapClient.clientUid;
+        return VALUE_OR_FATAL(android::aidl2legacy_int32_t_uid_t(mMmapClient.identity.uid));
     }
 
     pid_t getOwnerProcessId() const {
-        return mMmapClient.clientPid;
+        return VALUE_OR_FATAL(android::aidl2legacy_int32_t_pid_t(mMmapClient.identity.pid));
     }
 
     aaudio_handle_t getHandle() const {
diff --git a/services/oboeservice/Android.bp b/services/oboeservice/Android.bp
index 21f3247..a419dd5 100644
--- a/services/oboeservice/Android.bp
+++ b/services/oboeservice/Android.bp
@@ -66,10 +66,13 @@
         "liblog",
         "libutils",
         "aaudio-aidl-cpp",
+        "media_permission-aidl-cpp",
+        "libaudioclient_aidl_conversion",
     ],
 
     export_shared_lib_headers: [
         "libaaudio_internal",
+        "media_permission-aidl-cpp",
     ],
 
     header_libs: [
diff --git a/services/oboeservice/fuzzer/Android.bp b/services/oboeservice/fuzzer/Android.bp
index 78ef3fc..f4e8a81 100644
--- a/services/oboeservice/fuzzer/Android.bp
+++ b/services/oboeservice/fuzzer/Android.bp
@@ -46,6 +46,8 @@
         "liblog",
         "libutils",
         "aaudio-aidl-cpp",
+        "media_permission-aidl-cpp",
+        "libaudioclient_aidl_conversion",
     ],
     static_libs: [
         "libaaudioservice",
diff --git a/services/oboeservice/fuzzer/oboeservice_fuzzer.cpp b/services/oboeservice/fuzzer/oboeservice_fuzzer.cpp
index 163eae8..8e508d3 100644
--- a/services/oboeservice/fuzzer/oboeservice_fuzzer.cpp
+++ b/services/oboeservice/fuzzer/oboeservice_fuzzer.cpp
@@ -23,6 +23,7 @@
 #include <AAudioService.h>
 #include <aaudio/AAudio.h>
 #include "aaudio/BnAAudioClient.h"
+#include <android/media/permission/Identity.h>
 
 #define UNUSED_PARAM __attribute__((unused))
 
@@ -294,8 +295,11 @@
             ? fdp.ConsumeIntegral<int32_t>()
             : kAAudioFormats[fdp.ConsumeIntegralInRange<int32_t>(0, kNumAAudioFormats - 1)]));
 
-    request.setUserId(getuid());
-    request.setProcessId(getpid());
+    // TODO b/182392769: use identity util
+    media::permission::Identity identity;
+    identity.uid = getuid();
+    identity.pid = getpid();
+    request.setIdentity(identity);
     request.setInService(fdp.ConsumeBool());
 
     request.getConfiguration().setDeviceId(fdp.ConsumeIntegral<int32_t>());