libmediaplayerservice: fix warnings, make warnings errors, use clang

Change-Id: I1b2f6b65c5abbc366068a60b8909104f31b94228

23 files changed, 50 insertions, 45 deletions

diff --git a/media/libmediaplayerservice/Android.mk b/media/libmediaplayerservice/Android.mk
index 4b31715..2c4e719 100644
--- a/media/libmediaplayerservice/Android.mk
+++ b/media/libmediaplayerservice/Android.mk
@@ -54,6 +54,9 @@ LOCAL_C_INCLUDES :=                                                 \
     $(TOP)/frameworks/native/include/media/openmax                  \
     $(TOP)/external/tremolo/Tremolo                                 \
 
+LOCAL_CFLAGS += -Werror -Wall
+LOCAL_CLANG := true
+
 LOCAL_MODULE:= libmediaplayerservice
 
 LOCAL_32_BIT_ONLY := true
diff --git a/media/libmediaplayerservice/Crypto.cpp b/media/libmediaplayerservice/Crypto.cpp
index f639193..147d35f 100644
--- a/media/libmediaplayerservice/Crypto.cpp
+++ b/media/libmediaplayerservice/Crypto.cpp
@@ -89,7 +89,7 @@ void Crypto::findFactoryForScheme(const uint8_t uuid[16]) {
 
     // first check cache
     Vector<uint8_t> uuidVector;
-    uuidVector.appendArray(uuid, sizeof(uuid));
+    uuidVector.appendArray(uuid, sizeof(uuid[0]) * 16);
     ssize_t index = mUUIDToLibraryPathMap.indexOfKey(uuidVector);
     if (index >= 0) {
         if (loadLibraryForScheme(mUUIDToLibraryPathMap[index], uuid)) {
diff --git a/media/libmediaplayerservice/Drm.cpp b/media/libmediaplayerservice/Drm.cpp
index 62cf3e5..8ca8769 100644
--- a/media/libmediaplayerservice/Drm.cpp
+++ b/media/libmediaplayerservice/Drm.cpp
@@ -209,7 +209,7 @@ void Drm::findFactoryForScheme(const uint8_t uuid[16]) {
 
     // first check cache
     Vector<uint8_t> uuidVector;
-    uuidVector.appendArray(uuid, sizeof(uuid));
+    uuidVector.appendArray(uuid, sizeof(uuid[0]) * 16);
     ssize_t index = mUUIDToLibraryPathMap.indexOfKey(uuidVector);
     if (index >= 0) {
         if (loadLibraryForScheme(mUUIDToLibraryPathMap[index], uuid)) {
@@ -776,7 +776,7 @@ status_t Drm::signRSA(Vector<uint8_t> const &sessionId,
     return mPlugin->signRSA(sessionId, algorithm, message, wrappedKey, signature);
 }
 
-void Drm::binderDied(const wp<IBinder> &the_late_who)
+void Drm::binderDied(const wp<IBinder> &the_late_who __unused)
 {
     mEventLock.lock();
     mListener.clear();
diff --git a/media/libmediaplayerservice/Drm.h b/media/libmediaplayerservice/Drm.h
index 1591738..c4013b8 100644
--- a/media/libmediaplayerservice/Drm.h
+++ b/media/libmediaplayerservice/Drm.h
@@ -26,8 +26,8 @@
 
 namespace android {
 
-struct DrmFactory;
-struct DrmPlugin;
+class DrmFactory;
+class DrmPlugin;
 struct DrmSessionClientInterface;
 
 struct Drm : public BnDrm,
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 8e2e214..87003c5 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -413,7 +413,7 @@ status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& a
     return NO_ERROR;
 }
 
-status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
+status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
@@ -1461,8 +1461,6 @@ status_t MediaPlayerService::AudioOutput::open(
     }
     ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
                 format, bufferCount, mSessionId, flags);
-    uint32_t afSampleRate;
-    size_t afFrameCount;
     size_t frameCount;
 
     // offloading is only supported in callback mode for now.
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 2a95ce1..6ddfe14 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -304,7 +304,7 @@ private:
                                        int ext1, int ext2, const Parcel *obj);
 
                 pid_t           pid() const { return mPid; }
-        virtual status_t        dump(int fd, const Vector<String16>& args) const;
+        virtual status_t        dump(int fd, const Vector<String16>& args);
 
                 int             getAudioSessionId() { return mAudioSessionId; }
 
diff --git a/media/libmediaplayerservice/MediaRecorderClient.cpp b/media/libmediaplayerservice/MediaRecorderClient.cpp
index 4d4de9b..319ebb0 100644
--- a/media/libmediaplayerservice/MediaRecorderClient.cpp
+++ b/media/libmediaplayerservice/MediaRecorderClient.cpp
@@ -325,7 +325,7 @@ status_t MediaRecorderClient::setClientName(const String16& clientName) {
     return mRecorder->setClientName(clientName);
 }
 
-status_t MediaRecorderClient::dump(int fd, const Vector<String16>& args) const {
+status_t MediaRecorderClient::dump(int fd, const Vector<String16>& args) {
     if (mRecorder != NULL) {
         return mRecorder->dump(fd, args);
     }
diff --git a/media/libmediaplayerservice/MediaRecorderClient.h b/media/libmediaplayerservice/MediaRecorderClient.h
index a444b6c..b45344b 100644
--- a/media/libmediaplayerservice/MediaRecorderClient.h
+++ b/media/libmediaplayerservice/MediaRecorderClient.h
@@ -54,7 +54,7 @@ public:
     virtual     status_t   init();
     virtual     status_t   close();
     virtual     status_t   release();
-    virtual     status_t   dump(int fd, const Vector<String16>& args) const;
+    virtual     status_t   dump(int fd, const Vector<String16>& args);
     virtual     sp<IGraphicBufferProducer> querySurfaceMediaSource();
 
 private:
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.cpp b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
index 80804a7..6ef4c1f 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.cpp
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.cpp
@@ -57,7 +57,7 @@ MetadataRetrieverClient::~MetadataRetrieverClient()
     disconnect();
 }
 
-status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& /*args*/) const
+status_t MetadataRetrieverClient::dump(int fd, const Vector<String16>& /*args*/)
 {
     const size_t SIZE = 256;
     char buffer[SIZE];
diff --git a/media/libmediaplayerservice/MetadataRetrieverClient.h b/media/libmediaplayerservice/MetadataRetrieverClient.h
index ce52b91..e71a29e 100644
--- a/media/libmediaplayerservice/MetadataRetrieverClient.h
+++ b/media/libmediaplayerservice/MetadataRetrieverClient.h
@@ -54,7 +54,7 @@ public:
     virtual sp<IMemory>             extractAlbumArt();
     virtual const char*             extractMetadata(int keyCode);
 
-    virtual status_t                dump(int fd, const Vector<String16>& args) const;
+    virtual status_t                dump(int fd, const Vector<String16>& args);
 
 private:
     friend class MediaPlayerService;
diff --git a/media/libmediaplayerservice/RemoteDisplay.h b/media/libmediaplayerservice/RemoteDisplay.h
index 82a0116..1a48981 100644
--- a/media/libmediaplayerservice/RemoteDisplay.h
+++ b/media/libmediaplayerservice/RemoteDisplay.h
@@ -28,7 +28,7 @@ namespace android {
 
 struct ALooper;
 struct ANetworkSession;
-struct IRemoteDisplayClient;
+class IRemoteDisplayClient;
 struct WifiDisplaySource;
 
 struct RemoteDisplay : public BnRemoteDisplay {
diff --git a/media/libmediaplayerservice/StagefrightRecorder.cpp b/media/libmediaplayerservice/StagefrightRecorder.cpp
index 55763f0..fb21c73 100644
--- a/media/libmediaplayerservice/StagefrightRecorder.cpp
+++ b/media/libmediaplayerservice/StagefrightRecorder.cpp
@@ -916,7 +916,6 @@ sp<MediaSource> StagefrightRecorder::createAudioSource() {
     }
 
     sp<AMessage> format = new AMessage;
-    const char *mime;
     switch (mAudioEncoder) {
         case AUDIO_ENCODER_AMR_NB:
         case AUDIO_ENCODER_DEFAULT:
diff --git a/media/libmediaplayerservice/StagefrightRecorder.h b/media/libmediaplayerservice/StagefrightRecorder.h
index f34c229..8fa5bfa 100644
--- a/media/libmediaplayerservice/StagefrightRecorder.h
+++ b/media/libmediaplayerservice/StagefrightRecorder.h
@@ -37,7 +37,7 @@ struct AudioSource;
 class MediaProfiles;
 class IGraphicBufferProducer;
 class SurfaceMediaSource;
-class ALooper;
+struct ALooper;
 
 struct StagefrightRecorder : public MediaRecorderBase {
     StagefrightRecorder();
diff --git a/media/libmediaplayerservice/VideoFrameScheduler.h b/media/libmediaplayerservice/VideoFrameScheduler.h
index 84b27b4..b1765c9 100644
--- a/media/libmediaplayerservice/VideoFrameScheduler.h
+++ b/media/libmediaplayerservice/VideoFrameScheduler.h
@@ -24,7 +24,7 @@
 
 namespace android {
 
-struct ISurfaceComposer;
+class ISurfaceComposer;
 
 struct VideoFrameScheduler : public RefBase {
     VideoFrameScheduler();
diff --git a/media/libmediaplayerservice/nuplayer/Android.mk b/media/libmediaplayerservice/nuplayer/Android.mk
index fca08e2..20193c3 100644
--- a/media/libmediaplayerservice/nuplayer/Android.mk
+++ b/media/libmediaplayerservice/nuplayer/Android.mk
@@ -25,6 +25,9 @@ LOCAL_C_INCLUDES := \
 	$(TOP)/frameworks/av/media/libmediaplayerservice              \
 	$(TOP)/frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror -Wall
+LOCAL_CLANG := true
+
 LOCAL_MODULE:= libstagefright_nuplayer
 
 LOCAL_MODULE_TAGS := eng
diff --git a/media/libmediaplayerservice/nuplayer/GenericSource.cpp b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
index 8f1cd57..b7a88e7 100644
--- a/media/libmediaplayerservice/nuplayer/GenericSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/GenericSource.cpp
@@ -703,7 +703,7 @@ void NuPlayer::GenericSource::onPollBuffering() {
             stopBufferingIfNecessary();
         }
     } else if (cachedDataRemaining >= 0) {
-        ALOGV("onPollBuffering: cachedDataRemaining %d bytes",
+        ALOGV("onPollBuffering: cachedDataRemaining %zd bytes",
                 cachedDataRemaining);
 
         if (cachedDataRemaining < kLowWaterMarkBytes) {
@@ -790,7 +790,7 @@ void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
           }
           readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
           readBuffer(counterpartType, -1, NULL, formatChange);
-          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
+          ALOGV("timeUs %lld actualTimeUs %lld", (long long)timeUs, (long long)actualTimeUs);
 
           break;
       }
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
index 1bd4e57..ada3bed 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.cpp
@@ -971,7 +971,7 @@ void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
             CHECK(msg->findInt32("needNotify", &needNotify));
 
             ALOGV("kWhatSeek seekTimeUs=%lld us, needNotify=%d",
-                    seekTimeUs, needNotify);
+                    (long long)seekTimeUs, needNotify);
 
             mDeferredActions.push_back(
                     new FlushDecoderAction(FLUSH_CMD_FLUSH /* audio */,
@@ -1336,8 +1336,6 @@ void NuPlayer::updateVideoSize(
     }
 
     int32_t displayWidth, displayHeight;
-    int32_t cropLeft, cropTop, cropRight, cropBottom;
-
     if (outputFormat != NULL) {
         int32_t width, height;
         CHECK(outputFormat->findInt32("width", &width));
@@ -1570,7 +1568,7 @@ void NuPlayer::processDeferredActions() {
 
 void NuPlayer::performSeek(int64_t seekTimeUs, bool needNotify) {
     ALOGV("performSeek seekTimeUs=%lld us (%.2f secs), needNotify(%d)",
-          seekTimeUs,
+          (long long)seekTimeUs,
           seekTimeUs / 1E6,
           needNotify);
 
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerCCDecoder.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerCCDecoder.cpp
index cf3e8ad..ac3c6b6 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerCCDecoder.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerCCDecoder.cpp
@@ -51,6 +51,7 @@ static bool isNullPad(CCData *cc) {
     return cc->mData1 < 0x10 && cc->mData2 < 0x10;
 }
 
+static void dumpBytePair(const sp<ABuffer> &ccBuf) __attribute__ ((unused));
 static void dumpBytePair(const sp<ABuffer> &ccBuf) {
     size_t offset = 0;
     AString out;
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
index 827bdc1..f8be16a 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
@@ -856,7 +856,7 @@ void NuPlayer::Renderer::onDrainVideoQueue() {
 
         if (tooLate) {
             ALOGV("video late by %lld us (%.2f secs)",
-                 mVideoLateByUs, mVideoLateByUs / 1E6);
+                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
         } else {
             int64_t mediaUs = 0;
             mMediaClock->getMediaTime(realTimeUs, &mediaUs);
@@ -1178,7 +1178,7 @@ void NuPlayer::Renderer::onPause() {
         ALOGW("Renderer::onPause() called while already paused!");
         return;
     }
-    int64_t currentPositionUs;
+
     {
         Mutex::Autolock autoLock(mLock);
         ++mAudioDrainGeneration;
@@ -1196,7 +1196,7 @@ void NuPlayer::Renderer::onPause() {
         startAudioOffloadPauseTimeout();
     }
 
-    ALOGV("now paused audio queue has %d entries, video has %d entries",
+    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
           mAudioQueue.size(), mVideoQueue.size());
 }
 
@@ -1289,7 +1289,7 @@ int64_t NuPlayer::Renderer::getPlayedOutAudioDurationUs(int64_t nowUs) {
         CHECK_EQ(res, (status_t)OK);
         numFramesPlayedAt = nowUs;
         numFramesPlayedAt += 1000LL * mAudioSink->latency() / 2; /* XXX */
-        //ALOGD("getPosition: %d %lld", numFramesPlayed, numFramesPlayedAt);
+        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
     }
 
     //CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
diff --git a/media/libmediaplayerservice/tests/Android.mk b/media/libmediaplayerservice/tests/Android.mk
index 7bc78ff..8cbf782 100644
--- a/media/libmediaplayerservice/tests/Android.mk
+++ b/media/libmediaplayerservice/tests/Android.mk
@@ -18,6 +18,9 @@ LOCAL_C_INCLUDES := \
 	frameworks/av/include \
 	frameworks/av/media/libmediaplayerservice \
 
+LOCAL_CFLAGS += -Werror -Wall
+LOCAL_CLANG := true
+
 LOCAL_32_BIT_ONLY := true
 
 include $(BUILD_NATIVE_TEST)
diff --git a/media/libmediaplayerservice/tests/DrmSessionManager_test.cpp b/media/libmediaplayerservice/tests/DrmSessionManager_test.cpp
index d3e760b..de350a1 100644
--- a/media/libmediaplayerservice/tests/DrmSessionManager_test.cpp
+++ b/media/libmediaplayerservice/tests/DrmSessionManager_test.cpp
@@ -98,17 +98,17 @@ protected:
         mDrmSessionManager->addSession(kTestPid2, mTestDrm2, mSessionId2);
         mDrmSessionManager->addSession(kTestPid2, mTestDrm2, mSessionId3);
         const PidSessionInfosMap& map = sessionMap();
-        EXPECT_EQ(2, map.size());
+        EXPECT_EQ(2u, map.size());
         ssize_t index1 = map.indexOfKey(kTestPid1);
         ASSERT_GE(index1, 0);
         const SessionInfos& infos1 = map[index1];
-        EXPECT_EQ(1, infos1.size());
+        EXPECT_EQ(1u, infos1.size());
         ExpectEqSessionInfo(infos1[0], mTestDrm1, mSessionId1, 0);
 
         ssize_t index2 = map.indexOfKey(kTestPid2);
         ASSERT_GE(index2, 0);
         const SessionInfos& infos2 = map[index2];
-        EXPECT_EQ(2, infos2.size());
+        EXPECT_EQ(2u, infos2.size());
         ExpectEqSessionInfo(infos2[0], mTestDrm2, mSessionId2, 1);
         ExpectEqSessionInfo(infos2[1], mTestDrm2, mSessionId3, 2);
     }
@@ -185,11 +185,11 @@ TEST_F(DrmSessionManagerTest, removeSession) {
     mDrmSessionManager->removeSession(mSessionId2);
 
     const PidSessionInfosMap& map = sessionMap();
-    EXPECT_EQ(2, map.size());
+    EXPECT_EQ(2u, map.size());
     const SessionInfos& infos1 = map.valueFor(kTestPid1);
     const SessionInfos& infos2 = map.valueFor(kTestPid2);
-    EXPECT_EQ(1, infos1.size());
-    EXPECT_EQ(1, infos2.size());
+    EXPECT_EQ(1u, infos1.size());
+    EXPECT_EQ(1u, infos2.size());
     // mSessionId2 has been removed.
     ExpectEqSessionInfo(infos2[0], mTestDrm2, mSessionId3, 2);
 }
@@ -207,7 +207,7 @@ TEST_F(DrmSessionManagerTest, removeDrm) {
 
     const PidSessionInfosMap& map = sessionMap();
     const SessionInfos& infos2 = map.valueFor(kTestPid2);
-    EXPECT_EQ(1, infos2.size());
+    EXPECT_EQ(1u, infos2.size());
     // mTestDrm2 has been removed.
     ExpectEqSessionInfo(infos2[0], drm, sessionId, 3);
 }
@@ -220,7 +220,7 @@ TEST_F(DrmSessionManagerTest, reclaimSession) {
     EXPECT_FALSE(mDrmSessionManager->reclaimSession(50));
 
     EXPECT_TRUE(mDrmSessionManager->reclaimSession(10));
-    EXPECT_EQ(1, mTestDrm1->reclaimedSessions().size());
+    EXPECT_EQ(1u, mTestDrm1->reclaimedSessions().size());
     EXPECT_TRUE(isEqualSessionId(mSessionId1, mTestDrm1->reclaimedSessions()[0]));
 
     mDrmSessionManager->removeSession(mSessionId1);
@@ -233,7 +233,7 @@ TEST_F(DrmSessionManagerTest, reclaimSession) {
     mDrmSessionManager->addSession(15, drm, sessionId);
 
     EXPECT_TRUE(mDrmSessionManager->reclaimSession(18));
-    EXPECT_EQ(1, mTestDrm2->reclaimedSessions().size());
+    EXPECT_EQ(1u, mTestDrm2->reclaimedSessions().size());
     // mSessionId2 is reclaimed.
     EXPECT_TRUE(isEqualSessionId(mSessionId2, mTestDrm2->reclaimedSessions()[0]));
 }
diff --git a/media/libstagefright/rtsp/MyHandler.h b/media/libstagefright/rtsp/MyHandler.h
index 0642343..00f071b 100644
--- a/media/libstagefright/rtsp/MyHandler.h
+++ b/media/libstagefright/rtsp/MyHandler.h
@@ -651,7 +651,7 @@ struct MyHandler : public AHandler {
                 int32_t result;
                 CHECK(msg->findInt32("result", &result));
 
-                ALOGI("SETUP(%d) completed with result %d (%s)",
+                ALOGI("SETUP(%zu) completed with result %d (%s)",
                      index, result, strerror(-result));
 
                 if (result == OK) {
@@ -1012,7 +1012,7 @@ struct MyHandler : public AHandler {
 
                 int32_t eos;
                 if (msg->findInt32("eos", &eos)) {
-                    ALOGI("received BYE on track index %d", trackIndex);
+                    ALOGI("received BYE on track index %zu", trackIndex);
                     if (!mAllTracksHaveTime && dataReceivedOnAllChannels()) {
                         ALOGI("No time established => fake existing data");
 
@@ -1564,7 +1564,7 @@ private:
             new APacketSource(mSessionDesc, index);
 
         if (source->initCheck() != OK) {
-            ALOGW("Unsupported format. Ignoring track #%d.", index);
+            ALOGW("Unsupported format. Ignoring track #%zu.", index);
 
             sp<AMessage> reply = new AMessage('setu', this);
             reply->setSize("index", index);
@@ -1606,7 +1606,7 @@ private:
         info->mTimeScale = timescale;
         info->mEOSReceived = false;
 
-        ALOGV("track #%d URL=%s", mTracks.size(), trackURL.c_str());
+        ALOGV("track #%zu URL=%s", mTracks.size(), trackURL.c_str());
 
         AString request = "SETUP ";
         request.append(trackURL);
@@ -1731,8 +1731,8 @@ private:
     }
 
     void onTimeUpdate(int32_t trackIndex, uint32_t rtpTime, uint64_t ntpTime) {
-        ALOGV("onTimeUpdate track %d, rtpTime = 0x%08x, ntpTime = 0x%016llx",
-             trackIndex, rtpTime, ntpTime);
+        ALOGV("onTimeUpdate track %d, rtpTime = 0x%08x, ntpTime = %#016llx",
+             trackIndex, rtpTime, (long long)ntpTime);
 
         int64_t ntpTimeUs = (int64_t)(ntpTime * 1E6 / (1ll << 32));
 
@@ -1851,8 +1851,8 @@ private:
             return false;
         }
 
-        ALOGV("track %d rtpTime=%d mediaTimeUs = %lld us (%.2f secs)",
-             trackIndex, rtpTime, mediaTimeUs, mediaTimeUs / 1E6);
+        ALOGV("track %d rtpTime=%u mediaTimeUs = %lld us (%.2f secs)",
+             trackIndex, rtpTime, (long long)mediaTimeUs, mediaTimeUs / 1E6);
 
         accessUnit->meta()->setInt64("timeUs", mediaTimeUs);
 
diff --git a/media/libstagefright/wifi-display/source/WifiDisplaySource.h b/media/libstagefright/wifi-display/source/WifiDisplaySource.h
index 0f779e4..c417cf5 100644
--- a/media/libstagefright/wifi-display/source/WifiDisplaySource.h
+++ b/media/libstagefright/wifi-display/source/WifiDisplaySource.h
@@ -29,7 +29,7 @@ namespace android {
 
 struct AReplyToken;
 struct IHDCP;
-struct IRemoteDisplayClient;
+class IRemoteDisplayClient;
 struct ParsedMessage;
 
 // Represents the RTSP server acting as a wifi display source.