Audio: Use uid_t for uids

Test: Power manager shows correct uids for audio
Bug: 32713790
Change-Id: If5337e17283268f74dc0f00cc66ece9153d680ef
diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index cfa3e1a..0bcb9a0 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -32,7 +32,7 @@
                                 void *buffer,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_session_t sessionId,
-                                int uid,
+                                uid_t uid,
                                 audio_output_flags_t flags,
                                 track_type type);
     virtual             ~Track();
@@ -188,7 +188,7 @@
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
                                 size_t frameCount,
-                                int uid);
+                                uid_t uid);
     virtual             ~OutputTrack();
 
     virtual status_t    start(AudioSystem::sync_event_t event =
diff --git a/services/audioflinger/RecordTracks.h b/services/audioflinger/RecordTracks.h
index 123e033..883ff6b 100644
--- a/services/audioflinger/RecordTracks.h
+++ b/services/audioflinger/RecordTracks.h
@@ -30,7 +30,7 @@
                                 size_t frameCount,
                                 void *buffer,
                                 audio_session_t sessionId,
-                                int uid,
+                                uid_t uid,
                                 audio_input_flags_t flags,
                                 track_type type);
     virtual             ~RecordTrack();
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index e3ebc81..e222878 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -1068,12 +1068,12 @@
     }
 }
 
-void AudioFlinger::ThreadBase::updateWakeLockUids_l(const SortedVector<int> &uids) {
+void AudioFlinger::ThreadBase::updateWakeLockUids_l(const SortedVector<uid_t> &uids) {
     getPowerManager_l();
 
 #if !LOG_NDEBUG
     std::stringstream s;
-    for (int uid : uids) {
+    for (uid_t uid : uids) {
         s << uid << " ";
     }
     ALOGD("updateWakeLockUids_l %s uids:%s", mThreadName, s.str().c_str());
@@ -1088,10 +1088,10 @@
         return;
     }
     if (mPowerManager != 0) {
-        sp<IBinder> binder = new BBinder();
-        status_t status;
-        status = mPowerManager->updateWakeLockUids(mWakeLockToken, uids.size(), uids.array(),
-                    true /* FIXME force oneway contrary to .aidl */);
+        std::vector<int> uidsAsInt(uids.begin(), uids.end()); // powermanager expects uids as ints
+        status_t status = mPowerManager->updateWakeLockUids(
+                mWakeLockToken, uidsAsInt.size(), uidsAsInt.data(),
+                true /* FIXME force oneway contrary to .aidl */);
         ALOGV("updateWakeLockUids_l() %s status %d", mThreadName, status);
     }
 }
@@ -1892,7 +1892,7 @@
         audio_session_t sessionId,
         audio_output_flags_t *flags,
         pid_t tid,
-        int uid,
+        uid_t uid,
         status_t *status)
 {
     size_t frameCount = *pFrameCount;
@@ -4555,7 +4555,7 @@
 {
     uint32_t trackCount = 0;
     for (size_t i = 0; i < mTracks.size() ; i++) {
-        if (mTracks[i]->uid() == (int)uid) {
+        if (mTracks[i]->uid() == uid) {
             trackCount++;
         }
     }
@@ -6490,7 +6490,7 @@
         size_t *pFrameCount,
         audio_session_t sessionId,
         size_t *notificationFrames,
-        int uid,
+        uid_t uid,
         audio_input_flags_t *flags,
         pid_t tid,
         status_t *status)
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 862dc51..8d2ff15 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -404,7 +404,7 @@
                 virtual void acquireWakeLock_l();
                 void        releaseWakeLock();
                 void        releaseWakeLock_l();
-                void        updateWakeLockUids_l(const SortedVector<int> &uids);
+                void        updateWakeLockUids_l(const SortedVector<uid_t> &uids);
                 void        getPowerManager_l();
                 void setEffectSuspended_l(const effect_uuid_t *type,
                                           bool suspend,
@@ -547,8 +547,8 @@
                     void            clear();
 
                 private:
-                    SortedVector<int> getWakeLockUids() {
-                        SortedVector<int> wakeLockUids;
+                    SortedVector<uid_t> getWakeLockUids() {
+                        SortedVector<uid_t> wakeLockUids;
                         for (const sp<T> &track : mActiveTracks) {
                             wakeLockUids.add(track->uid());
                         }
@@ -671,7 +671,7 @@
                                 audio_session_t sessionId,
                                 audio_output_flags_t *flags,
                                 pid_t tid,
-                                int uid,
+                                uid_t uid,
                                 status_t *status /*non-NULL*/);
 
                 AudioStreamOut* getOutput() const;
@@ -1366,7 +1366,7 @@
                     size_t *pFrameCount,
                     audio_session_t sessionId,
                     size_t *notificationFrames,
-                    int uid,
+                    uid_t uid,
                     audio_input_flags_t *flags,
                     pid_t tid,
                     status_t *status /*non-NULL*/);
diff --git a/services/audioflinger/TrackBase.h b/services/audioflinger/TrackBase.h
index 7c48375..4fcb596 100644
--- a/services/audioflinger/TrackBase.h
+++ b/services/audioflinger/TrackBase.h
@@ -62,7 +62,7 @@
                                 size_t frameCount,
                                 void *buffer,
                                 audio_session_t sessionId,
-                                int uid,
+                                uid_t uid,
                                 bool isOut,
                                 alloc_type alloc = ALLOC_CBLK,
                                 track_type type = TYPE_DEFAULT);
@@ -75,7 +75,7 @@
             sp<IMemory> getCblk() const { return mCblkMemory; }
             audio_track_cblk_t* cblk() const { return mCblk; }
             audio_session_t sessionId() const { return mSessionId; }
-            int         uid() const { return mUid; }
+            uid_t       uid() const { return mUid; }
     virtual status_t    setSyncEvent(const sp<SyncEvent>& event);
 
             sp<IMemory> getBuffers() const { return mBufferMemory; }
@@ -153,7 +153,7 @@
                                     // openRecord(), and then adjusted as needed
 
     const audio_session_t mSessionId;
-    int                 mUid;
+    uid_t               mUid;
     Vector < sp<SyncEvent> >mSyncEvents;
     const bool          mIsOut;
     sp<ServerProxy>     mServerProxy;
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index e1fe7e2..8f134c1 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -72,7 +72,7 @@
             size_t frameCount,
             void *buffer,
             audio_session_t sessionId,
-            int clientUid,
+            uid_t clientUid,
             bool isOut,
             alloc_type alloc,
             track_type type)
@@ -99,10 +99,10 @@
         mThreadIoHandle(thread->id())
 {
     const uid_t callingUid = IPCThreadState::self()->getCallingUid();
-    if (!isTrustedCallingUid(callingUid) || clientUid == -1) {
-        ALOGW_IF(clientUid != -1 && clientUid != (int)callingUid,
+    if (!isTrustedCallingUid(callingUid) || clientUid == AUDIO_UID_INVALID) {
+        ALOGW_IF(clientUid != AUDIO_UID_INVALID && clientUid != callingUid,
                 "%s uid %d tried to pass itself off as %d", __FUNCTION__, callingUid, clientUid);
-        clientUid = (int)callingUid;
+        clientUid = callingUid;
     }
     // clientUid contains the uid of the app that is responsible for this track, so we can blame
     // battery usage on it.
@@ -341,7 +341,7 @@
             void *buffer,
             const sp<IMemory>& sharedBuffer,
             audio_session_t sessionId,
-            int uid,
+            uid_t uid,
             audio_output_flags_t flags,
             track_type type)
     :   TrackBase(thread, client, sampleRate, format, channelMask, frameCount,
@@ -1138,7 +1138,7 @@
             audio_format_t format,
             audio_channel_mask_t channelMask,
             size_t frameCount,
-            int uid)
+            uid_t uid)
     :   Track(playbackThread, NULL, AUDIO_STREAM_PATCH,
               sampleRate, format, channelMask, frameCount,
               NULL, 0, AUDIO_SESSION_NONE, uid, AUDIO_OUTPUT_FLAG_NONE,
@@ -1474,7 +1474,7 @@
             size_t frameCount,
             void *buffer,
             audio_session_t sessionId,
-            int uid,
+            uid_t uid,
             audio_input_flags_t flags,
             track_type type)
     :   TrackBase(thread, client, sampleRate, format,