warnings be gone.

Change-Id: Ie3bae3f037730e316d7fca12e7a3527973f752ef
diff --git a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp
index ac2aab8..cbedf5c 100644
--- a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.cpp
@@ -139,7 +139,7 @@
     // LiveSession::selectTrack returns BAD_VALUE when selecting the currently
     // selected track, or unselecting a non-selected track. In this case it's an
     // no-op so we return OK.
-    return (err == OK || err == BAD_VALUE) ? OK : err;
+    return (err == OK || err == BAD_VALUE) ? (status_t)OK : err;
 }
 
 status_t NuPlayer::HTTPLiveSource::seekTo(int64_t seekTimeUs) {
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index 817395a..01e59c8 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -1528,7 +1528,7 @@
     notify->post();
 }
 
-void NuPlayer::Source::onMessageReceived(const sp<AMessage> &msg) {
+void NuPlayer::Source::onMessageReceived(const sp<AMessage> & /* msg */) {
     TRESPASS();
 }
 
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
index 9ef8dbd..e4850f0 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDriver.cpp
@@ -367,7 +367,7 @@
     return OK;
 }
 
-status_t NuPlayerDriver::setLooping(int loop) {
+status_t NuPlayerDriver::setLooping(int /* loop */) {
     return INVALID_OPERATION;
 }
 
@@ -423,16 +423,17 @@
     mPlayer->setAudioSink(audioSink);
 }
 
-status_t NuPlayerDriver::setParameter(int key, const Parcel &request) {
+status_t NuPlayerDriver::setParameter(
+        int /* key */, const Parcel & /* request */) {
     return INVALID_OPERATION;
 }
 
-status_t NuPlayerDriver::getParameter(int key, Parcel *reply) {
+status_t NuPlayerDriver::getParameter(int /* key */, Parcel * /* reply */) {
     return INVALID_OPERATION;
 }
 
 status_t NuPlayerDriver::getMetadata(
-        const media::Metadata::Filter& ids, Parcel *records) {
+        const media::Metadata::Filter& /* ids */, Parcel *records) {
     Mutex::Autolock autoLock(mLock);
 
     using media::Metadata;
@@ -496,7 +497,8 @@
     mNumFramesDropped = numFramesDropped;
 }
 
-status_t NuPlayerDriver::dump(int fd, const Vector<String16> &args) const {
+status_t NuPlayerDriver::dump(
+        int fd, const Vector<String16> & /* args */) const {
     Mutex::Autolock autoLock(mLock);
 
     FILE *out = fdopen(dup(fd), "w");
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
index e50533a..11279fc 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerSource.h
@@ -68,19 +68,19 @@
     virtual status_t dequeueAccessUnit(
             bool audio, sp<ABuffer> *accessUnit) = 0;
 
-    virtual status_t getDuration(int64_t *durationUs) {
+    virtual status_t getDuration(int64_t * /* durationUs */) {
         return INVALID_OPERATION;
     }
 
-    virtual status_t getTrackInfo(Parcel* reply) const {
+    virtual status_t getTrackInfo(Parcel* /* reply */) const {
         return INVALID_OPERATION;
     }
 
-    virtual status_t selectTrack(size_t trackIndex, bool select) {
+    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */) {
         return INVALID_OPERATION;
     }
 
-    virtual status_t seekTo(int64_t seekTimeUs) {
+    virtual status_t seekTo(int64_t /* seekTimeUs */) {
         return INVALID_OPERATION;
     }
 
@@ -93,7 +93,7 @@
 
     virtual void onMessageReceived(const sp<AMessage> &msg);
 
-    virtual sp<MetaData> getFormatMeta(bool audio) { return NULL; }
+    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
 
     sp<AMessage> dupNotify() const { return mNotify->dup(); }