warnings be gone.

Change-Id: Ie3bae3f037730e316d7fca12e7a3527973f752ef
diff --git a/include/media/stagefright/MediaSource.h b/include/media/stagefright/MediaSource.h
index 3818e63..204d1c6 100644
--- a/include/media/stagefright/MediaSource.h
+++ b/include/media/stagefright/MediaSource.h
@@ -105,7 +105,7 @@
     // This will be called after a successful start() and before the
     // first read() call.
     // Callee assumes ownership of the buffers if no error is returned.
-    virtual status_t setBuffers(const Vector<MediaBuffer *> &buffers) {
+    virtual status_t setBuffers(const Vector<MediaBuffer *> & /* buffers */) {
         return ERROR_UNSUPPORTED;
     }
 
diff --git a/media/libmediaplayerservice/StagefrightPlayer.cpp b/media/libmediaplayerservice/StagefrightPlayer.cpp
index b19e8bf..b37aee3 100644
--- a/media/libmediaplayerservice/StagefrightPlayer.cpp
+++ b/media/libmediaplayerservice/StagefrightPlayer.cpp
@@ -189,7 +189,7 @@
 }
 
 status_t StagefrightPlayer::getMetadata(
-        const media::Metadata::Filter& ids, Parcel *records) {
+        const media::Metadata::Filter& /* ids */, Parcel *records) {
     using media::Metadata;
 
     uint32_t flags = mPlayer->flags();
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(); }
 
diff --git a/media/libstagefright/AACExtractor.cpp b/media/libstagefright/AACExtractor.cpp
index 4d1072f..196f6ee 100644
--- a/media/libstagefright/AACExtractor.cpp
+++ b/media/libstagefright/AACExtractor.cpp
@@ -219,7 +219,7 @@
     return new AACSource(mDataSource, mMeta, mOffsetVector, mFrameDurationUs);
 }
 
-sp<MetaData> AACExtractor::getTrackMetaData(size_t index, uint32_t flags) {
+sp<MetaData> AACExtractor::getTrackMetaData(size_t index, uint32_t /* flags */) {
     if (mInitCheck != OK || index != 0) {
         return NULL;
     }
@@ -252,7 +252,7 @@
     }
 }
 
-status_t AACSource::start(MetaData *params) {
+status_t AACSource::start(MetaData * /* params */) {
     CHECK(!mStarted);
 
     if (mOffsetVector.empty()) {
diff --git a/media/libstagefright/AACWriter.cpp b/media/libstagefright/AACWriter.cpp
index c9bcaba..deee8e7 100644
--- a/media/libstagefright/AACWriter.cpp
+++ b/media/libstagefright/AACWriter.cpp
@@ -111,7 +111,7 @@
     return OK;
 }
 
-status_t AACWriter::start(MetaData *params) {
+status_t AACWriter::start(MetaData * /* params */) {
     if (mInitCheck != OK) {
         return mInitCheck;
     }
diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index f2354b4..4a8c4c4 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -1171,7 +1171,7 @@
             if (canDoAdaptivePlayback &&
                 msg->findInt32("max-width", &maxWidth) &&
                 msg->findInt32("max-height", &maxHeight)) {
-                ALOGV("[%s] prepareForAdaptivePlayback(%ldx%ld)",
+                ALOGV("[%s] prepareForAdaptivePlayback(%dx%d)",
                       mComponentName.c_str(), maxWidth, maxHeight);
 
                 err = mOMX->prepareForAdaptivePlayback(
diff --git a/media/libstagefright/AMRExtractor.cpp b/media/libstagefright/AMRExtractor.cpp
index 03dcbf9..3f592ed 100644
--- a/media/libstagefright/AMRExtractor.cpp
+++ b/media/libstagefright/AMRExtractor.cpp
@@ -189,7 +189,7 @@
             mOffsetTable, mOffsetTableLength);
 }
 
-sp<MetaData> AMRExtractor::getTrackMetaData(size_t index, uint32_t flags) {
+sp<MetaData> AMRExtractor::getTrackMetaData(size_t index, uint32_t /* flags */) {
     if (mInitCheck != OK || index != 0) {
         return NULL;
     }
@@ -221,7 +221,7 @@
     }
 }
 
-status_t AMRSource::start(MetaData *params) {
+status_t AMRSource::start(MetaData * /* params */) {
     CHECK(!mStarted);
 
     mOffset = mIsWide ? 9 : 6;
@@ -258,7 +258,7 @@
         int64_t seekFrame = seekTimeUs / 20000ll;  // 20ms per frame.
         mCurrentTimeUs = seekFrame * 20000ll;
 
-        int index = seekFrame / 50;
+        size_t index = seekFrame < 0 ? 0 : seekFrame / 50;
         if (index >= mOffsetTableLength) {
             index = mOffsetTableLength - 1;
         }
diff --git a/media/libstagefright/AMRWriter.cpp b/media/libstagefright/AMRWriter.cpp
index 3fe247a..653ca36 100644
--- a/media/libstagefright/AMRWriter.cpp
+++ b/media/libstagefright/AMRWriter.cpp
@@ -105,7 +105,7 @@
     return OK;
 }
 
-status_t AMRWriter::start(MetaData *params) {
+status_t AMRWriter::start(MetaData * /* params */) {
     if (mInitCheck != OK) {
         return mInitCheck;
     }
diff --git a/media/libstagefright/Android.mk b/media/libstagefright/Android.mk
index 63f9399..1ab3d82 100644
--- a/media/libstagefright/Android.mk
+++ b/media/libstagefright/Android.mk
@@ -111,7 +111,7 @@
         libstagefright_foundation \
         libdl
 
-LOCAL_CFLAGS += -Wno-multichar
+LOCAL_CFLAGS += -Wno-multichar -Werror
 
 LOCAL_MODULE:= libstagefright
 
diff --git a/media/libstagefright/AudioPlayer.cpp b/media/libstagefright/AudioPlayer.cpp
index 05ee34e..8623100 100644
--- a/media/libstagefright/AudioPlayer.cpp
+++ b/media/libstagefright/AudioPlayer.cpp
@@ -410,7 +410,7 @@
 
 // static
 size_t AudioPlayer::AudioSinkCallback(
-        MediaPlayerBase::AudioSink *audioSink,
+        MediaPlayerBase::AudioSink * /* audioSink */,
         void *buffer, size_t size, void *cookie,
         MediaPlayerBase::AudioSink::cb_event_t event) {
     AudioPlayer *me = (AudioPlayer *)cookie;
diff --git a/media/libstagefright/AudioSource.cpp b/media/libstagefright/AudioSource.cpp
index 6fdee6b..df7da0a 100644
--- a/media/libstagefright/AudioSource.cpp
+++ b/media/libstagefright/AudioSource.cpp
@@ -68,7 +68,7 @@
         int frameCount = kMaxBufferSize / sizeof(int16_t) / channelCount;
 
         // make sure that the AudioRecord total buffer size is large enough
-        int bufCount = 2;
+        size_t bufCount = 2;
         while ((bufCount * frameCount) < minFrameCount) {
             bufCount++;
         }
@@ -208,7 +208,7 @@
 }
 
 status_t AudioSource::read(
-        MediaBuffer **out, const ReadOptions *options) {
+        MediaBuffer **out, const ReadOptions * /* options */) {
     Mutex::Autolock autoLock(mLock);
     *out = NULL;
 
diff --git a/media/libstagefright/AwesomePlayer.cpp b/media/libstagefright/AwesomePlayer.cpp
index f57ee25..e83ec62 100644
--- a/media/libstagefright/AwesomePlayer.cpp
+++ b/media/libstagefright/AwesomePlayer.cpp
@@ -86,7 +86,7 @@
 protected:
     virtual ~AwesomeEvent() {}
 
-    virtual void fire(TimedEventQueue *queue, int64_t /* now_us */) {
+    virtual void fire(TimedEventQueue * /* queue */, int64_t /* now_us */) {
         (mPlayer->*mMethod)();
     }
 
@@ -2813,7 +2813,8 @@
     return mCachedSource != NULL || mWVMExtractor != NULL;
 }
 
-status_t AwesomePlayer::dump(int fd, const Vector<String16> &args) const {
+status_t AwesomePlayer::dump(
+        int fd, const Vector<String16> & /* args */) const {
     Mutex::Autolock autoLock(mStatsLock);
 
     FILE *out = fdopen(dup(fd), "w");
diff --git a/media/libstagefright/CameraSource.cpp b/media/libstagefright/CameraSource.cpp
index 3017fe7..f3ff792 100644
--- a/media/libstagefright/CameraSource.cpp
+++ b/media/libstagefright/CameraSource.cpp
@@ -31,6 +31,12 @@
 #include <utils/String8.h>
 #include <cutils/properties.h>
 
+#if LOG_NDEBUG
+#define UNUSED_UNLESS_VERBOSE(x) (void)(x)
+#else
+#define UNUSED_UNLESS_VERBOSE(x)
+#endif
+
 namespace android {
 
 static const int64_t CAMERA_SOURCE_TIMEOUT_NS = 3000000000LL;
@@ -63,11 +69,14 @@
 }
 
 void CameraSourceListener::notify(int32_t msgType, int32_t ext1, int32_t ext2) {
+    UNUSED_UNLESS_VERBOSE(msgType);
+    UNUSED_UNLESS_VERBOSE(ext1);
+    UNUSED_UNLESS_VERBOSE(ext2);
     ALOGV("notify(%d, %d, %d)", msgType, ext1, ext2);
 }
 
 void CameraSourceListener::postData(int32_t msgType, const sp<IMemory> &dataPtr,
-                                    camera_frame_metadata_t *metadata) {
+                                    camera_frame_metadata_t * /* metadata */) {
     ALOGV("postData(%d, ptr:%p, size:%d)",
          msgType, dataPtr->pointer(), dataPtr->size());
 
diff --git a/media/libstagefright/CameraSourceTimeLapse.cpp b/media/libstagefright/CameraSourceTimeLapse.cpp
index 86844b8..60cdf66 100644
--- a/media/libstagefright/CameraSourceTimeLapse.cpp
+++ b/media/libstagefright/CameraSourceTimeLapse.cpp
@@ -232,7 +232,7 @@
     return newMemory;
 }
 
-bool CameraSourceTimeLapse::skipCurrentFrame(int64_t timestampUs) {
+bool CameraSourceTimeLapse::skipCurrentFrame(int64_t /* timestampUs */) {
     ALOGV("skipCurrentFrame");
     if (mSkipCurrentFrame) {
         mSkipCurrentFrame = false;
diff --git a/media/libstagefright/FLACExtractor.cpp b/media/libstagefright/FLACExtractor.cpp
index 098fcf9..fa7251c 100644
--- a/media/libstagefright/FLACExtractor.cpp
+++ b/media/libstagefright/FLACExtractor.cpp
@@ -208,55 +208,55 @@
 // with the same parameter list, but discard redundant information.
 
 FLAC__StreamDecoderReadStatus FLACParser::read_callback(
-        const FLAC__StreamDecoder *decoder, FLAC__byte buffer[],
+        const FLAC__StreamDecoder * /* decoder */, FLAC__byte buffer[],
         size_t *bytes, void *client_data)
 {
     return ((FLACParser *) client_data)->readCallback(buffer, bytes);
 }
 
 FLAC__StreamDecoderSeekStatus FLACParser::seek_callback(
-        const FLAC__StreamDecoder *decoder,
+        const FLAC__StreamDecoder * /* decoder */,
         FLAC__uint64 absolute_byte_offset, void *client_data)
 {
     return ((FLACParser *) client_data)->seekCallback(absolute_byte_offset);
 }
 
 FLAC__StreamDecoderTellStatus FLACParser::tell_callback(
-        const FLAC__StreamDecoder *decoder,
+        const FLAC__StreamDecoder * /* decoder */,
         FLAC__uint64 *absolute_byte_offset, void *client_data)
 {
     return ((FLACParser *) client_data)->tellCallback(absolute_byte_offset);
 }
 
 FLAC__StreamDecoderLengthStatus FLACParser::length_callback(
-        const FLAC__StreamDecoder *decoder,
+        const FLAC__StreamDecoder * /* decoder */,
         FLAC__uint64 *stream_length, void *client_data)
 {
     return ((FLACParser *) client_data)->lengthCallback(stream_length);
 }
 
 FLAC__bool FLACParser::eof_callback(
-        const FLAC__StreamDecoder *decoder, void *client_data)
+        const FLAC__StreamDecoder * /* decoder */, void *client_data)
 {
     return ((FLACParser *) client_data)->eofCallback();
 }
 
 FLAC__StreamDecoderWriteStatus FLACParser::write_callback(
-        const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame,
+        const FLAC__StreamDecoder * /* decoder */, const FLAC__Frame *frame,
         const FLAC__int32 * const buffer[], void *client_data)
 {
     return ((FLACParser *) client_data)->writeCallback(frame, buffer);
 }
 
 void FLACParser::metadata_callback(
-        const FLAC__StreamDecoder *decoder,
+        const FLAC__StreamDecoder * /* decoder */,
         const FLAC__StreamMetadata *metadata, void *client_data)
 {
     ((FLACParser *) client_data)->metadataCallback(metadata);
 }
 
 void FLACParser::error_callback(
-        const FLAC__StreamDecoder *decoder,
+        const FLAC__StreamDecoder * /* decoder */,
         FLAC__StreamDecoderErrorStatus status, void *client_data)
 {
     ((FLACParser *) client_data)->errorCallback(status);
@@ -380,15 +380,21 @@
 // Copy samples from FLAC native 32-bit non-interleaved to 16-bit interleaved.
 // These are candidates for optimization if needed.
 
-static void copyMono8(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyMono8(
+        short *dst,
+        const int *const *src,
+        unsigned nSamples,
+        unsigned /* nChannels */) {
     for (unsigned i = 0; i < nSamples; ++i) {
         *dst++ = src[0][i] << 8;
     }
 }
 
-static void copyStereo8(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyStereo8(
+        short *dst,
+        const int *const *src,
+        unsigned nSamples,
+        unsigned /* nChannels */) {
     for (unsigned i = 0; i < nSamples; ++i) {
         *dst++ = src[0][i] << 8;
         *dst++ = src[1][i] << 8;
@@ -404,15 +410,21 @@
     }
 }
 
-static void copyMono16(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyMono16(
+        short *dst,
+        const int *const *src,
+        unsigned nSamples,
+        unsigned /* nChannels */) {
     for (unsigned i = 0; i < nSamples; ++i) {
         *dst++ = src[0][i];
     }
 }
 
-static void copyStereo16(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyStereo16(
+        short *dst,
+        const int *const *src,
+        unsigned nSamples,
+        unsigned /* nChannels */) {
     for (unsigned i = 0; i < nSamples; ++i) {
         *dst++ = src[0][i];
         *dst++ = src[1][i];
@@ -430,15 +442,21 @@
 
 // 24-bit versions should do dithering or noise-shaping, here or in AudioFlinger
 
-static void copyMono24(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyMono24(
+        short *dst,
+        const int *const *src,
+        unsigned nSamples,
+        unsigned /* nChannels */) {
     for (unsigned i = 0; i < nSamples; ++i) {
         *dst++ = src[0][i] >> 8;
     }
 }
 
-static void copyStereo24(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyStereo24(
+        short *dst,
+        const int *const *src,
+        unsigned nSamples,
+        unsigned /* nChannels */) {
     for (unsigned i = 0; i < nSamples; ++i) {
         *dst++ = src[0][i] >> 8;
         *dst++ = src[1][i] >> 8;
@@ -454,8 +472,11 @@
     }
 }
 
-static void copyTrespass(short *dst, const int *const *src, unsigned nSamples, unsigned nChannels)
-{
+static void copyTrespass(
+        short * /* dst */,
+        const int *const * /* src */,
+        unsigned /* nSamples */,
+        unsigned /* nChannels */) {
     TRESPASS();
 }
 
@@ -700,7 +721,7 @@
     }
 }
 
-status_t FLACSource::start(MetaData *params)
+status_t FLACSource::start(MetaData * /* params */)
 {
     ALOGV("FLACSource::start");
 
@@ -792,8 +813,7 @@
 }
 
 sp<MetaData> FLACExtractor::getTrackMetaData(
-        size_t index, uint32_t flags)
-{
+        size_t index, uint32_t /* flags */) {
     if (mInitCheck != OK || index > 0) {
         return NULL;
     }
diff --git a/media/libstagefright/MP3Extractor.cpp b/media/libstagefright/MP3Extractor.cpp
index 380dab4..4a63152 100644
--- a/media/libstagefright/MP3Extractor.cpp
+++ b/media/libstagefright/MP3Extractor.cpp
@@ -398,7 +398,8 @@
             mSeeker);
 }
 
-sp<MetaData> MP3Extractor::getTrackMetaData(size_t index, uint32_t flags) {
+sp<MetaData> MP3Extractor::getTrackMetaData(
+        size_t index, uint32_t /* flags */) {
     if (mInitCheck != OK || index != 0) {
         return NULL;
     }
diff --git a/media/libstagefright/MPEG2TSWriter.cpp b/media/libstagefright/MPEG2TSWriter.cpp
index c9ed5bb..78c12e1 100644
--- a/media/libstagefright/MPEG2TSWriter.cpp
+++ b/media/libstagefright/MPEG2TSWriter.cpp
@@ -555,7 +555,7 @@
     return OK;
 }
 
-status_t MPEG2TSWriter::start(MetaData *param) {
+status_t MPEG2TSWriter::start(MetaData * /* param */) {
     CHECK(!mStarted);
 
     mStarted = true;
@@ -596,7 +596,8 @@
     return !mStarted || (mNumSourcesDone == mSources.size() ? true : false);
 }
 
-status_t MPEG2TSWriter::dump(int fd, const Vector<String16> &args) {
+status_t MPEG2TSWriter::dump(
+        int /* fd */, const Vector<String16> & /* args */) {
     return OK;
 }
 
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp
index e6312c1..570d417 100644
--- a/media/libstagefright/MPEG4Extractor.cpp
+++ b/media/libstagefright/MPEG4Extractor.cpp
@@ -571,7 +571,8 @@
     return size;
 }
 
-status_t MPEG4Extractor::parseDrmSINF(off64_t *offset, off64_t data_offset) {
+status_t MPEG4Extractor::parseDrmSINF(
+        off64_t * /* offset */, off64_t data_offset) {
     uint8_t updateIdTag;
     if (mDataSource->readAt(data_offset, &updateIdTag, 1) < 1) {
         return ERROR_IO;
@@ -2959,7 +2960,8 @@
     return OK;
 }
 
-status_t MPEG4Source::parseSampleAuxiliaryInformationSizes(off64_t offset, off64_t size) {
+status_t MPEG4Source::parseSampleAuxiliaryInformationSizes(
+        off64_t offset, off64_t /* size */) {
     ALOGV("parseSampleAuxiliaryInformationSizes");
     // 14496-12 8.7.12
     uint8_t version;
@@ -3021,7 +3023,8 @@
     return OK;
 }
 
-status_t MPEG4Source::parseSampleAuxiliaryInformationOffsets(off64_t offset, off64_t size) {
+status_t MPEG4Source::parseSampleAuxiliaryInformationOffsets(
+        off64_t offset, off64_t /* size */) {
     ALOGV("parseSampleAuxiliaryInformationOffsets");
     // 14496-12 8.7.13
     uint8_t version;
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
index ff6feb9..2e8d6b3 100644
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -407,7 +407,7 @@
 }
 
 status_t MPEG4Writer::Track::dump(
-        int fd, const Vector<String16>& args) const {
+        int fd, const Vector<String16>& /* args */) const {
     const size_t SIZE = 256;
     char buffer[SIZE];
     String8 result;
diff --git a/media/libstagefright/MediaAdapter.cpp b/media/libstagefright/MediaAdapter.cpp
index 2484212..d680e0c 100644
--- a/media/libstagefright/MediaAdapter.cpp
+++ b/media/libstagefright/MediaAdapter.cpp
@@ -36,7 +36,7 @@
     CHECK(mCurrentMediaBuffer == NULL);
 }
 
-status_t MediaAdapter::start(MetaData *params) {
+status_t MediaAdapter::start(MetaData * /* params */) {
     Mutex::Autolock autoLock(mAdapterLock);
     if (!mStarted) {
         mStarted = true;
@@ -75,7 +75,7 @@
 }
 
 status_t MediaAdapter::read(
-            MediaBuffer **buffer, const ReadOptions *options) {
+            MediaBuffer **buffer, const ReadOptions * /* options */) {
     Mutex::Autolock autoLock(mAdapterLock);
     if (!mStarted) {
         ALOGV("Read before even started!");
diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index c4c47b3..fe21296 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -115,7 +115,7 @@
         if (codecIdx >= 0) {
             Vector<AString> types;
             if (mcl->getSupportedTypes(codecIdx, &types) == OK) {
-                for (int i = 0; i < types.size(); i++) {
+                for (size_t i = 0; i < types.size(); i++) {
                     if (types[i].startsWith("video/")) {
                         needDedicatedLooper = true;
                         break;
diff --git a/media/libstagefright/MediaCodecSource.cpp b/media/libstagefright/MediaCodecSource.cpp
index 2c20d62..924173c 100644
--- a/media/libstagefright/MediaCodecSource.cpp
+++ b/media/libstagefright/MediaCodecSource.cpp
@@ -293,8 +293,8 @@
     return mGraphicBufferProducer;
 }
 
-status_t MediaCodecSource::read(MediaBuffer** buffer,
-        const ReadOptions* options) {
+status_t MediaCodecSource::read(
+        MediaBuffer** buffer, const ReadOptions* /* options */) {
     Mutex::Autolock autolock(mOutputBufferLock);
 
     *buffer = NULL;
diff --git a/media/libstagefright/NuCachedSource2.cpp b/media/libstagefright/NuCachedSource2.cpp
index 1287fb1..72ea32d 100644
--- a/media/libstagefright/NuCachedSource2.cpp
+++ b/media/libstagefright/NuCachedSource2.cpp
@@ -333,7 +333,7 @@
             mNumRetriesLeft = 0;
         }
 
-        ALOGE("source returned error %ld, %d retries left", n, mNumRetriesLeft);
+        ALOGE("source returned error %d, %d retries left", n, mNumRetriesLeft);
         mCache->releasePage(page);
     } else if (n == 0) {
         ALOGI("ERROR_END_OF_STREAM");
@@ -648,7 +648,7 @@
     ssize_t lowwaterMarkKb, highwaterMarkKb;
     int keepAliveSecs;
 
-    if (sscanf(s, "%ld/%ld/%d",
+    if (sscanf(s, "%d/%d/%d",
                &lowwaterMarkKb, &highwaterMarkKb, &keepAliveSecs) != 3) {
         ALOGE("Failed to parse cache parameters from '%s'.", s);
         return;
diff --git a/media/libstagefright/OggExtractor.cpp b/media/libstagefright/OggExtractor.cpp
index 5e79e78..f3eeb03 100644
--- a/media/libstagefright/OggExtractor.cpp
+++ b/media/libstagefright/OggExtractor.cpp
@@ -151,7 +151,7 @@
     return mExtractor->mImpl->getFormat();
 }
 
-status_t OggSource::start(MetaData *params) {
+status_t OggSource::start(MetaData * /* params */) {
     if (mStarted) {
         return INVALID_OPERATION;
     }
@@ -381,7 +381,7 @@
     ssize_t n;
     if ((n = mSource->readAt(offset, header, sizeof(header)))
             < (ssize_t)sizeof(header)) {
-        ALOGV("failed to read %d bytes at offset 0x%016llx, got %ld bytes",
+        ALOGV("failed to read %zu bytes at offset 0x%016llx, got %d bytes",
              sizeof(header), offset, n);
 
         if (n < 0) {
@@ -505,7 +505,7 @@
                     packetSize);
 
             if (n < (ssize_t)packetSize) {
-                ALOGV("failed to read %d bytes at 0x%016llx, got %ld bytes",
+                ALOGV("failed to read %zu bytes at 0x%016llx, got %d bytes",
                      packetSize, dataOffset, n);
                 return ERROR_IO;
             }
@@ -546,7 +546,7 @@
                 buffer = NULL;
             }
 
-            ALOGV("readPage returned %ld", n);
+            ALOGV("readPage returned %d", n);
 
             return n < 0 ? n : (status_t)ERROR_END_OF_STREAM;
         }
@@ -998,7 +998,7 @@
 }
 
 sp<MetaData> OggExtractor::getTrackMetaData(
-        size_t index, uint32_t flags) {
+        size_t index, uint32_t /* flags */) {
     if (index >= 1) {
         return NULL;
     }
diff --git a/media/libstagefright/StagefrightMediaScanner.cpp b/media/libstagefright/StagefrightMediaScanner.cpp
index edd12fc..fe20835 100644
--- a/media/libstagefright/StagefrightMediaScanner.cpp
+++ b/media/libstagefright/StagefrightMediaScanner.cpp
@@ -118,7 +118,7 @@
 }
 
 MediaScanResult StagefrightMediaScanner::processFileInternal(
-        const char *path, const char *mimeType,
+        const char *path, const char * /* mimeType */,
         MediaScannerClient &client) {
     const char *extension = strrchr(path, '.');
 
diff --git a/media/libstagefright/SurfaceMediaSource.cpp b/media/libstagefright/SurfaceMediaSource.cpp
index 6b934d4..686d03a 100644
--- a/media/libstagefright/SurfaceMediaSource.cpp
+++ b/media/libstagefright/SurfaceMediaSource.cpp
@@ -99,8 +99,11 @@
     dump(result, "", buffer, 1024);
 }
 
-void SurfaceMediaSource::dump(String8& result, const char* prefix,
-        char* buffer, size_t SIZE) const
+void SurfaceMediaSource::dump(
+        String8& result,
+        const char* /* prefix */,
+        char* buffer,
+        size_t /* SIZE */) const
 {
     Mutex::Autolock lock(mMutex);
 
@@ -269,9 +272,8 @@
             bufferHandle, (*buffer)->range_length(), (*buffer)->range_offset());
 }
 
-status_t SurfaceMediaSource::read( MediaBuffer **buffer,
-                                    const ReadOptions *options)
-{
+status_t SurfaceMediaSource::read(
+        MediaBuffer **buffer, const ReadOptions * /* options */) {
     ALOGV("read");
     Mutex::Autolock lock(mMutex);
 
diff --git a/media/libstagefright/TimedEventQueue.cpp b/media/libstagefright/TimedEventQueue.cpp
index 0afac69..3d2eb1f 100644
--- a/media/libstagefright/TimedEventQueue.cpp
+++ b/media/libstagefright/TimedEventQueue.cpp
@@ -376,8 +376,8 @@
     mPowerManager.clear();
 }
 
-void TimedEventQueue::PMDeathRecipient::binderDied(const wp<IBinder>& who)
-{
+void TimedEventQueue::PMDeathRecipient::binderDied(
+        const wp<IBinder>& /* who */) {
     mQueue->clearPowerManager();
 }
 
diff --git a/media/libstagefright/VBRISeeker.cpp b/media/libstagefright/VBRISeeker.cpp
index a245f2c..af858b9 100644
--- a/media/libstagefright/VBRISeeker.cpp
+++ b/media/libstagefright/VBRISeeker.cpp
@@ -119,7 +119,7 @@
 
         seeker->mSegments.push(numBytes);
 
-        ALOGV("entry #%d: %d offset 0x%08lx", i, numBytes, offset);
+        ALOGV("entry #%d: %u offset 0x%016llx", i, numBytes, offset);
         offset += numBytes;
     }
 
@@ -160,7 +160,7 @@
         *pos += mSegments.itemAt(segmentIndex++);
     }
 
-    ALOGV("getOffsetForTime %lld us => 0x%08lx", *timeUs, *pos);
+    ALOGV("getOffsetForTime %lld us => 0x%016llx", *timeUs, *pos);
 
     *timeUs = nowUs;
 
diff --git a/media/libstagefright/WAVExtractor.cpp b/media/libstagefright/WAVExtractor.cpp
index 22af6fb..fe9058b 100644
--- a/media/libstagefright/WAVExtractor.cpp
+++ b/media/libstagefright/WAVExtractor.cpp
@@ -127,7 +127,7 @@
 }
 
 sp<MetaData> WAVExtractor::getTrackMetaData(
-        size_t index, uint32_t flags) {
+        size_t index, uint32_t /* flags */) {
     if (mInitCheck != OK || index > 0) {
         return NULL;
     }
@@ -358,7 +358,7 @@
     }
 }
 
-status_t WAVSource::start(MetaData *params) {
+status_t WAVSource::start(MetaData * /* params */) {
     ALOGV("WAVSource::start");
 
     CHECK(!mStarted);
diff --git a/media/libstagefright/avc_utils.cpp b/media/libstagefright/avc_utils.cpp
index b822868..c6ac0da 100644
--- a/media/libstagefright/avc_utils.cpp
+++ b/media/libstagefright/avc_utils.cpp
@@ -251,9 +251,7 @@
     return OK;
 }
 
-static sp<ABuffer> FindNAL(
-        const uint8_t *data, size_t size, unsigned nalType,
-        size_t *stopOffset) {
+static sp<ABuffer> FindNAL(const uint8_t *data, size_t size, unsigned nalType) {
     const uint8_t *nalStart;
     size_t nalSize;
     while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
@@ -293,7 +291,7 @@
     const uint8_t *data = accessUnit->data();
     size_t size = accessUnit->size();
 
-    sp<ABuffer> seqParamSet = FindNAL(data, size, 7, NULL);
+    sp<ABuffer> seqParamSet = FindNAL(data, size, 7);
     if (seqParamSet == NULL) {
         return NULL;
     }
@@ -303,8 +301,7 @@
     FindAVCDimensions(
             seqParamSet, &width, &height, &sarWidth, &sarHeight);
 
-    size_t stopOffset;
-    sp<ABuffer> picParamSet = FindNAL(data, size, 8, &stopOffset);
+    sp<ABuffer> picParamSet = FindNAL(data, size, 8);
     CHECK(picParamSet != NULL);
 
     size_t csdSize =
diff --git a/media/libstagefright/codecs/aacdec/Android.mk b/media/libstagefright/codecs/aacdec/Android.mk
index ffa64f9..49ff238 100644
--- a/media/libstagefright/codecs/aacdec/Android.mk
+++ b/media/libstagefright/codecs/aacdec/Android.mk
@@ -17,6 +17,8 @@
 
 LOCAL_CFLAGS :=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_STATIC_LIBRARIES := libFraunhoferAAC
 
 LOCAL_SHARED_LIBRARIES := \
diff --git a/media/libstagefright/codecs/aacenc/Android.mk b/media/libstagefright/codecs/aacenc/Android.mk
index 057c69b..58ec3ba 100644
--- a/media/libstagefright/codecs/aacenc/Android.mk
+++ b/media/libstagefright/codecs/aacenc/Android.mk
@@ -82,6 +82,8 @@
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/src/asm/ARMV7
 endif
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
 
 ################################################################################
@@ -106,6 +108,8 @@
 
   LOCAL_CFLAGS :=
 
+  LOCAL_CFLAGS += -Werror
+
   LOCAL_STATIC_LIBRARIES := libFraunhoferAAC
 
   LOCAL_SHARED_LIBRARIES := \
@@ -128,6 +132,8 @@
 
   LOCAL_CFLAGS := -DOSCL_IMPORT_REF=
 
+  LOCAL_CFLAGS += -Werror
+
   LOCAL_STATIC_LIBRARIES := \
           libstagefright_aacenc
 
diff --git a/media/libstagefright/codecs/aacenc/SoftAACEncoder2.cpp b/media/libstagefright/codecs/aacenc/SoftAACEncoder2.cpp
index ff2b503..9a91579 100644
--- a/media/libstagefright/codecs/aacenc/SoftAACEncoder2.cpp
+++ b/media/libstagefright/codecs/aacenc/SoftAACEncoder2.cpp
@@ -338,7 +338,7 @@
     return OK;
 }
 
-void SoftAACEncoder2::onQueueFilled(OMX_U32 portIndex) {
+void SoftAACEncoder2::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError) {
         return;
     }
diff --git a/media/libstagefright/codecs/aacenc/basic_op/oper_32b.c b/media/libstagefright/codecs/aacenc/basic_op/oper_32b.c
index cc01927..1d029fc 100644
--- a/media/libstagefright/codecs/aacenc/basic_op/oper_32b.c
+++ b/media/libstagefright/codecs/aacenc/basic_op/oper_32b.c
@@ -24,6 +24,8 @@
 #include "basic_op.h"
 #include "oper_32b.h"
 
+#define UNUSED(x) (void)(x)
+
 /*****************************************************************************
  *                                                                           *
  *  Function L_Extract()                                                     *
@@ -243,6 +245,8 @@
 Word32 rsqrt(Word32 value,     /*!< Operand to square root (0.0 ... 1) */
              Word32 accuracy)  /*!< Number of valid bits that will be calculated */
 {
+    UNUSED(accuracy);
+
     Word32 root = 0;
 	Word32 scale;
 
diff --git a/media/libstagefright/codecs/aacenc/src/aacenc.c b/media/libstagefright/codecs/aacenc/src/aacenc.c
index d1c8621..40db92c 100644
--- a/media/libstagefright/codecs/aacenc/src/aacenc.c
+++ b/media/libstagefright/codecs/aacenc/src/aacenc.c
@@ -27,6 +27,8 @@
 #include "cmnMemory.h"
 #include "memalign.h"
 
+#define UNUSED(x) (void)(x)
+
 /**
 * Init the audio codec module and return codec handle
 * \param phCodec [OUT] Return the video codec handle
@@ -46,6 +48,8 @@
 	VO_MEM_OPERATOR *pMemOP;
 	int interMem;
 
+        UNUSED(vType);
+
 	interMem = 0;
 	error = 0;
 
@@ -471,6 +475,10 @@
 */
 VO_U32 VO_API voAACEncGetParam(VO_HANDLE hCodec, VO_S32 uParamID, VO_PTR pData)
 {
+        UNUSED(hCodec);
+        UNUSED(uParamID);
+        UNUSED(pData);
+
 	return VO_ERR_NONE;
 }
 
diff --git a/media/libstagefright/codecs/aacenc/src/adj_thr.c b/media/libstagefright/codecs/aacenc/src/adj_thr.c
index ccfe883..471631c 100644
--- a/media/libstagefright/codecs/aacenc/src/adj_thr.c
+++ b/media/libstagefright/codecs/aacenc/src/adj_thr.c
@@ -72,7 +72,7 @@
                           const Word16 nChannels)
 {
   Word16 ch, sfb, sfbGrp;
-  Word32 *pthrExp, *psfbThre;
+  Word32 *pthrExp = NULL, *psfbThre;
   for (ch=0; ch<nChannels; ch++) {
     PSY_OUT_CHANNEL *psyOutChan = &psyOutChannel[ch];
 	 for(sfbGrp = 0; sfbGrp < psyOutChan->sfbCnt; sfbGrp+= psyOutChan->sfbPerGroup)
diff --git a/media/libstagefright/codecs/aacenc/src/bitenc.c b/media/libstagefright/codecs/aacenc/src/bitenc.c
index fcc12dd..d1fd647 100644
--- a/media/libstagefright/codecs/aacenc/src/bitenc.c
+++ b/media/libstagefright/codecs/aacenc/src/bitenc.c
@@ -26,6 +26,7 @@
 #include "qc_data.h"
 #include "interface.h"
 
+#define UNUSED(x) (void)(x)
 
 static const  Word16 globalGainOffset = 100;
 static const  Word16 icsReservedBit   = 0;
@@ -585,6 +586,8 @@
   Word16 elementUsedBits;
   Word16 frameBits=0;
 
+  UNUSED(ancBytes);
+
   /*   struct bitbuffer bsWriteCopy; */
   bitMarkUp = GetBitsAvail(hBitStream);
   if(qcOut->qcElement.adtsUsed)  /*  write adts header*/
diff --git a/media/libstagefright/codecs/aacenc/src/dyn_bits.c b/media/libstagefright/codecs/aacenc/src/dyn_bits.c
index 7769188..4d763d0 100644
--- a/media/libstagefright/codecs/aacenc/src/dyn_bits.c
+++ b/media/libstagefright/codecs/aacenc/src/dyn_bits.c
@@ -25,7 +25,6 @@
 #include "bit_cnt.h"
 #include "psy_const.h"
 
-
 /*****************************************************************************
 *
 * function name: buildBitLookUp
@@ -226,7 +225,7 @@
   }
 
   while (TRUE) {
-    Word16 maxMergeGain, maxNdx, maxNdxNext, maxNdxLast;
+    Word16 maxMergeGain, maxNdx = 0, maxNdxNext, maxNdxLast;
 
     maxMergeGain = findMaxMerge(mergeGainLookUp, sectionInfo, maxSfb, &maxNdx);
 
diff --git a/media/libstagefright/codecs/aacenc/src/psy_main.c b/media/libstagefright/codecs/aacenc/src/psy_main.c
index 4e9218c..6f0679c 100644
--- a/media/libstagefright/codecs/aacenc/src/psy_main.c
+++ b/media/libstagefright/codecs/aacenc/src/psy_main.c
@@ -38,6 +38,8 @@
 #include "tns_func.h"
 #include "memalign.h"
 
+#define UNUSED(x) (void)(x)
+
 /*                                    long       start       short       stop */
 static Word16 blockType2windowShape[] = {KBD_WINDOW,SINE_WINDOW,SINE_WINDOW,KBD_WINDOW};
 
@@ -170,7 +172,9 @@
 *****************************************************************************/
 Word16 PsyOutDelete(PSY_OUT *hPsyOut, VO_MEM_OPERATOR *pMemOP)
 {
-  hPsyOut=NULL;
+  UNUSED(hPsyOut);
+  UNUSED(pMemOP);
+
   return 0;
 }
 
diff --git a/media/libstagefright/codecs/aacenc/src/qc_main.c b/media/libstagefright/codecs/aacenc/src/qc_main.c
index 48ff300..e5d78aa 100644
--- a/media/libstagefright/codecs/aacenc/src/qc_main.c
+++ b/media/libstagefright/codecs/aacenc/src/qc_main.c
@@ -33,6 +33,7 @@
 #include "channel_map.h"
 #include "memalign.h"
 
+#define UNUSED(x) (void)(x)
 
 typedef enum{
   FRAME_LEN_BYTES_MODULO =  1,
@@ -204,11 +205,8 @@
 **********************************************************************************/
 void QCDelete(QC_STATE *hQC, VO_MEM_OPERATOR *pMemOP)
 {
-
-  /*
-     nothing to do
-  */
-  hQC=NULL;
+  UNUSED(hQC);
+  UNUSED(pMemOP);
 }
 
 /*********************************************************************************
diff --git a/media/libstagefright/codecs/aacenc/src/tns.c b/media/libstagefright/codecs/aacenc/src/tns.c
index 455a864..5172612 100644
--- a/media/libstagefright/codecs/aacenc/src/tns.c
+++ b/media/libstagefright/codecs/aacenc/src/tns.c
@@ -30,6 +30,8 @@
 #include "psy_configuration.h"
 #include "tns_func.h"
 
+#define UNUSED(x) (void)(x)
+
 #define TNS_MODIFY_BEGIN         2600  /* Hz */
 #define RATIO_PATCH_LOWER_BORDER 380   /* Hz */
 #define TNS_GAIN_THRESH			 141   /* 1.41*100 */
@@ -643,6 +645,8 @@
   Word32 i;
   Word32 tnsOrderPlus1 = tnsOrder + 1;
 
+  UNUSED(window);
+
   assert(tnsOrder <= TNS_MAX_ORDER);      /* remove asserts later? (btg) */
 
   for(i=0;i<tnsOrder;i++) {
diff --git a/media/libstagefright/codecs/amrnb/common/Android.mk b/media/libstagefright/codecs/amrnb/common/Android.mk
index 30ce29c..a2b3c8f 100644
--- a/media/libstagefright/codecs/amrnb/common/Android.mk
+++ b/media/libstagefright/codecs/amrnb/common/Android.mk
@@ -69,6 +69,8 @@
 LOCAL_CFLAGS := \
         -DOSCL_UNUSED_ARG= -DOSCL_IMPORT_REF= -DOSCL_EXPORT_REF=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := libstagefright_amrnb_common
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/amrnb/dec/Android.mk b/media/libstagefright/codecs/amrnb/dec/Android.mk
index 8d6c6f8..b067456 100644
--- a/media/libstagefright/codecs/amrnb/dec/Android.mk
+++ b/media/libstagefright/codecs/amrnb/dec/Android.mk
@@ -47,6 +47,8 @@
 LOCAL_CFLAGS := \
         -DOSCL_UNUSED_ARG= -DOSCL_IMPORT_REF=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := libstagefright_amrnbdec
 
 include $(BUILD_STATIC_LIBRARY)
@@ -68,6 +70,8 @@
 
 LOCAL_CFLAGS := -DOSCL_IMPORT_REF=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_STATIC_LIBRARIES := \
         libstagefright_amrnbdec libstagefright_amrwbdec
 
diff --git a/media/libstagefright/codecs/amrnb/dec/SoftAMR.cpp b/media/libstagefright/codecs/amrnb/dec/SoftAMR.cpp
index 3320688..d1b0f76 100644
--- a/media/libstagefright/codecs/amrnb/dec/SoftAMR.cpp
+++ b/media/libstagefright/codecs/amrnb/dec/SoftAMR.cpp
@@ -274,7 +274,7 @@
     return frameSize;
 }
 
-void SoftAMR::onQueueFilled(OMX_U32 portIndex) {
+void SoftAMR::onQueueFilled(OMX_U32 /* portIndex */) {
     List<BufferInfo *> &inQueue = getPortQueue(0);
     List<BufferInfo *> &outQueue = getPortQueue(1);
 
@@ -428,7 +428,7 @@
     }
 }
 
-void SoftAMR::onPortFlushCompleted(OMX_U32 portIndex) {
+void SoftAMR::onPortFlushCompleted(OMX_U32 /* portIndex */) {
 }
 
 void SoftAMR::onPortEnableCompleted(OMX_U32 portIndex, bool enabled) {
diff --git a/media/libstagefright/codecs/amrnb/enc/Android.mk b/media/libstagefright/codecs/amrnb/enc/Android.mk
index f4e467a..afc0b89 100644
--- a/media/libstagefright/codecs/amrnb/enc/Android.mk
+++ b/media/libstagefright/codecs/amrnb/enc/Android.mk
@@ -69,6 +69,8 @@
 LOCAL_CFLAGS := \
         -DOSCL_UNUSED_ARG=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := libstagefright_amrnbenc
 
 include $(BUILD_STATIC_LIBRARY)
@@ -88,6 +90,8 @@
         $(LOCAL_PATH)/../common/include \
         $(LOCAL_PATH)/../common
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_STATIC_LIBRARIES := \
         libstagefright_amrnbenc
 
diff --git a/media/libstagefright/codecs/amrnb/enc/SoftAMRNBEncoder.cpp b/media/libstagefright/codecs/amrnb/enc/SoftAMRNBEncoder.cpp
index 50b739c..9489457 100644
--- a/media/libstagefright/codecs/amrnb/enc/SoftAMRNBEncoder.cpp
+++ b/media/libstagefright/codecs/amrnb/enc/SoftAMRNBEncoder.cpp
@@ -270,7 +270,7 @@
     }
 }
 
-void SoftAMRNBEncoder::onQueueFilled(OMX_U32 portIndex) {
+void SoftAMRNBEncoder::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError) {
         return;
     }
diff --git a/media/libstagefright/codecs/amrwb/Android.mk b/media/libstagefright/codecs/amrwb/Android.mk
index 677107f..efdf988 100644
--- a/media/libstagefright/codecs/amrwb/Android.mk
+++ b/media/libstagefright/codecs/amrwb/Android.mk
@@ -50,6 +50,8 @@
 LOCAL_CFLAGS := \
         -DOSCL_UNUSED_ARG= -DOSCL_IMPORT_REF=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := libstagefright_amrwbdec
 
 include $(BUILD_STATIC_LIBRARY)
diff --git a/media/libstagefright/codecs/amrwbenc/Android.mk b/media/libstagefright/codecs/amrwbenc/Android.mk
index c5b8e0c..64fe8d1 100644
--- a/media/libstagefright/codecs/amrwbenc/Android.mk
+++ b/media/libstagefright/codecs/amrwbenc/Android.mk
@@ -112,6 +112,8 @@
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/src/asm/ARMV7
 endif
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
 
 ################################################################################
@@ -126,6 +128,8 @@
 	frameworks/av/media/libstagefright/codecs/common/include \
 	frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_STATIC_LIBRARIES := \
         libstagefright_amrwbenc
 
diff --git a/media/libstagefright/codecs/amrwbenc/SoftAMRWBEncoder.cpp b/media/libstagefright/codecs/amrwbenc/SoftAMRWBEncoder.cpp
index 9ccb49c..91a512d 100644
--- a/media/libstagefright/codecs/amrwbenc/SoftAMRWBEncoder.cpp
+++ b/media/libstagefright/codecs/amrwbenc/SoftAMRWBEncoder.cpp
@@ -317,7 +317,7 @@
     }
 }
 
-void SoftAMRWBEncoder::onQueueFilled(OMX_U32 portIndex) {
+void SoftAMRWBEncoder::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError) {
         return;
     }
diff --git a/media/libstagefright/codecs/amrwbenc/src/autocorr.c b/media/libstagefright/codecs/amrwbenc/src/autocorr.c
index 8c477ca..0b2ea89 100644
--- a/media/libstagefright/codecs/amrwbenc/src/autocorr.c
+++ b/media/libstagefright/codecs/amrwbenc/src/autocorr.c
@@ -28,6 +28,8 @@
 #include "acelp.h"
 #include "ham_wind.tab"
 
+#define UNUSED(x) (void)(x)
+
 void Autocorr(
 		Word16 x[],                           /* (i)    : Input signal                      */
 		Word16 m,                             /* (i)    : LPC order                         */
@@ -40,6 +42,8 @@
 	Word32 L_sum, L_sum1, L_tmp, F_LEN;
 	Word16 *p1,*p2,*p3;
 	const Word16 *p4;
+        UNUSED(m);
+
 	/* Windowing of signal */
 	p1 = x;
 	p4 = vo_window;
diff --git a/media/libstagefright/codecs/amrwbenc/src/convolve.c b/media/libstagefright/codecs/amrwbenc/src/convolve.c
index acba532..4c1f7d4 100644
--- a/media/libstagefright/codecs/amrwbenc/src/convolve.c
+++ b/media/libstagefright/codecs/amrwbenc/src/convolve.c
@@ -25,6 +25,8 @@
 #include "typedef.h"
 #include "basic_op.h"
 
+#define UNUSED(x) (void)(x)
+
 void Convolve (
 		Word16 x[],        /* (i)     : input vector                           */
 		Word16 h[],        /* (i)     : impulse response                       */
@@ -35,6 +37,8 @@
 	Word32  i, n;
 	Word16 *tmpH,*tmpX;
 	Word32 s;
+        UNUSED(L);
+
 	for (n = 0; n < 64;)
 	{
 		tmpH = h+n;
diff --git a/media/libstagefright/codecs/amrwbenc/src/syn_filt.c b/media/libstagefright/codecs/amrwbenc/src/syn_filt.c
index 1bda05a..961aadc 100644
--- a/media/libstagefright/codecs/amrwbenc/src/syn_filt.c
+++ b/media/libstagefright/codecs/amrwbenc/src/syn_filt.c
@@ -26,6 +26,8 @@
 #include "math_op.h"
 #include "cnst.h"
 
+#define UNUSED(x) (void)(x)
+
 void Syn_filt(
 		Word16 a[],                           /* (i) Q12 : a[m+1] prediction coefficients           */
 		Word16 x[],                           /* (i)     : input signal                             */
@@ -95,6 +97,8 @@
 	Word32 i,a0;
 	Word32 L_tmp, L_tmp1;
 	Word16 *p1, *p2, *p3;
+        UNUSED(m);
+
 	a0 = a[0] >> (4 + Qnew);          /* input / 16 and >>Qnew */
 	/* Do the filtering. */
 	for (i = 0; i < lg; i++)
diff --git a/media/libstagefright/codecs/amrwbenc/src/voAMRWBEnc.c b/media/libstagefright/codecs/amrwbenc/src/voAMRWBEnc.c
index ea9da52..df7b9b3 100644
--- a/media/libstagefright/codecs/amrwbenc/src/voAMRWBEnc.c
+++ b/media/libstagefright/codecs/amrwbenc/src/voAMRWBEnc.c
@@ -39,6 +39,8 @@
 #include "mem_align.h"
 #include "cmnMemory.h"
 
+#define UNUSED(x) (void)(x)
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -1602,6 +1604,8 @@
 	VO_MEM_OPERATOR voMemoprator;
 #endif
 	VO_MEM_OPERATOR *pMemOP;
+        UNUSED(vType);
+
 	int interMem = 0;
 
 	if(pUserData == NULL || pUserData->memflag != VO_IMF_USERMEMOPERATOR || pUserData->memData == NULL )
diff --git a/media/libstagefright/codecs/avc/common/Android.mk b/media/libstagefright/codecs/avc/common/Android.mk
index 22dee15..844ef0a 100644
--- a/media/libstagefright/codecs/avc/common/Android.mk
+++ b/media/libstagefright/codecs/avc/common/Android.mk
@@ -16,4 +16,6 @@
 	$(LOCAL_PATH)/src \
  	$(LOCAL_PATH)/include
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/avc/enc/Android.mk b/media/libstagefright/codecs/avc/enc/Android.mk
index 7d17c2a..537ba42 100644
--- a/media/libstagefright/codecs/avc/enc/Android.mk
+++ b/media/libstagefright/codecs/avc/enc/Android.mk
@@ -30,6 +30,8 @@
 LOCAL_CFLAGS := \
     -DOSCL_IMPORT_REF= -DOSCL_UNUSED_ARG= -DOSCL_EXPORT_REF=
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
 
 ################################################################################
@@ -69,4 +71,6 @@
 LOCAL_MODULE := libstagefright_soft_h264enc
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp b/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp
index 1d398fb..1104e54 100644
--- a/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp
+++ b/media/libstagefright/codecs/avc/enc/SoftAVCEncoder.cpp
@@ -34,6 +34,12 @@
 
 #include "SoftAVCEncoder.h"
 
+#if LOG_NDEBUG
+#define UNUSED_UNLESS_VERBOSE(x) (void)(x)
+#else
+#define UNUSED_UNLESS_VERBOSE(x)
+#endif
+
 namespace android {
 
 template<class T>
@@ -136,14 +142,14 @@
 }
 
 static void* MallocWrapper(
-        void *userData, int32_t size, int32_t attrs) {
+        void * /* userData */, int32_t size, int32_t /* attrs */) {
     void *ptr = malloc(size);
     if (ptr)
         memset(ptr, 0, size);
     return ptr;
 }
 
-static void FreeWrapper(void *userData, void* ptr) {
+static void FreeWrapper(void * /* userData */, void* ptr) {
     free(ptr);
 }
 
@@ -217,7 +223,7 @@
     mHandle->CBAVC_Free = FreeWrapper;
 
     CHECK(mEncParams != NULL);
-    memset(mEncParams, 0, sizeof(mEncParams));
+    memset(mEncParams, 0, sizeof(*mEncParams));
     mEncParams->rate_control = AVC_ON;
     mEncParams->initQP = 0;
     mEncParams->init_CBP_removal_delay = 1600;
@@ -722,7 +728,7 @@
     }
 }
 
-void SoftAVCEncoder::onQueueFilled(OMX_U32 portIndex) {
+void SoftAVCEncoder::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError || mSawInputEOS) {
         return;
     }
@@ -964,6 +970,7 @@
 }
 
 void SoftAVCEncoder::signalBufferReturned(MediaBuffer *buffer) {
+    UNUSED_UNLESS_VERBOSE(buffer);
     ALOGV("signalBufferReturned: %p", buffer);
 }
 
diff --git a/media/libstagefright/codecs/common/Android.mk b/media/libstagefright/codecs/common/Android.mk
index a33cb92..b0010ff 100644
--- a/media/libstagefright/codecs/common/Android.mk
+++ b/media/libstagefright/codecs/common/Android.mk
@@ -14,6 +14,8 @@
 LOCAL_C_INCLUDES := \
 	$(LOCAL_PATH)/include
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
 
 
diff --git a/media/libstagefright/codecs/common/cmnMemory.c b/media/libstagefright/codecs/common/cmnMemory.c
index aa52bd9..5bb6cc4 100644
--- a/media/libstagefright/codecs/common/cmnMemory.c
+++ b/media/libstagefright/codecs/common/cmnMemory.c
@@ -26,8 +26,12 @@
 
 //VO_MEM_OPERATOR		g_memOP;
 
+#define UNUSED(x) (void)(x)
+
 VO_U32 cmnMemAlloc (VO_S32 uID,  VO_MEM_INFO * pMemInfo)
 {
+        UNUSED(uID);
+
 	if (!pMemInfo)
 		return VO_ERR_INVALID_ARG;
 
@@ -37,34 +41,48 @@
 
 VO_U32 cmnMemFree (VO_S32 uID, VO_PTR pMem)
 {
+        UNUSED(uID);
+
 	free (pMem);
 	return 0;
 }
 
 VO_U32	cmnMemSet (VO_S32 uID, VO_PTR pBuff, VO_U8 uValue, VO_U32 uSize)
 {
+        UNUSED(uID);
+
 	memset (pBuff, uValue, uSize);
 	return 0;
 }
 
 VO_U32	cmnMemCopy (VO_S32 uID, VO_PTR pDest, VO_PTR pSource, VO_U32 uSize)
 {
+        UNUSED(uID);
+
 	memcpy (pDest, pSource, uSize);
 	return 0;
 }
 
 VO_U32	cmnMemCheck (VO_S32 uID, VO_PTR pBuffer, VO_U32 uSize)
 {
+        UNUSED(uID);
+        UNUSED(pBuffer);
+        UNUSED(uSize);
+
 	return 0;
 }
 
 VO_S32 cmnMemCompare (VO_S32 uID, VO_PTR pBuffer1, VO_PTR pBuffer2, VO_U32 uSize)
 {
+        UNUSED(uID);
+
 	return memcmp(pBuffer1, pBuffer2, uSize);
 }
 
 VO_U32	cmnMemMove (VO_S32 uID, VO_PTR pDest, VO_PTR pSource, VO_U32 uSize)
 {
+        UNUSED(uID);
+
 	memmove (pDest, pSource, uSize);
 	return 0;
 }
diff --git a/media/libstagefright/codecs/flac/enc/Android.mk b/media/libstagefright/codecs/flac/enc/Android.mk
index f01d605..59a11de 100644
--- a/media/libstagefright/codecs/flac/enc/Android.mk
+++ b/media/libstagefright/codecs/flac/enc/Android.mk
@@ -9,6 +9,8 @@
         frameworks/native/include/media/openmax \
         external/flac/include
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES := \
         libstagefright libstagefright_omx libstagefright_foundation libutils liblog
 
diff --git a/media/libstagefright/codecs/flac/enc/SoftFlacEncoder.cpp b/media/libstagefright/codecs/flac/enc/SoftFlacEncoder.cpp
index e64fe72..40661e7 100644
--- a/media/libstagefright/codecs/flac/enc/SoftFlacEncoder.cpp
+++ b/media/libstagefright/codecs/flac/enc/SoftFlacEncoder.cpp
@@ -27,6 +27,12 @@
 #define FLAC_COMPRESSION_LEVEL_DEFAULT 5
 #define FLAC_COMPRESSION_LEVEL_MAX     8
 
+#if LOG_NDEBUG
+#define UNUSED_UNLESS_VERBOSE(x) (void)(x)
+#else
+#define UNUSED_UNLESS_VERBOSE(x)
+#endif
+
 namespace android {
 
 template<class T>
@@ -257,7 +263,7 @@
 }
 
 void SoftFlacEncoder::onQueueFilled(OMX_U32 portIndex) {
-
+    UNUSED_UNLESS_VERBOSE(portIndex);
     ALOGV("SoftFlacEncoder::onQueueFilled(portIndex=%ld)", portIndex);
 
     if (mSignalledError) {
@@ -343,10 +349,11 @@
     }
 }
 
-
 FLAC__StreamEncoderWriteStatus SoftFlacEncoder::onEncodedFlacAvailable(
             const FLAC__byte buffer[],
-            size_t bytes, unsigned samples, unsigned current_frame) {
+            size_t bytes, unsigned samples,
+            unsigned current_frame) {
+    UNUSED_UNLESS_VERBOSE(current_frame);
     ALOGV("SoftFlacEncoder::onEncodedFlacAvailable(bytes=%d, samples=%d, curr_frame=%d)",
             bytes, samples, current_frame);
 
@@ -444,8 +451,12 @@
 
 // static
 FLAC__StreamEncoderWriteStatus SoftFlacEncoder::flacEncoderWriteCallback(
-            const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[],
-            size_t bytes, unsigned samples, unsigned current_frame, void *client_data) {
+            const FLAC__StreamEncoder * /* encoder */,
+            const FLAC__byte buffer[],
+            size_t bytes,
+            unsigned samples,
+            unsigned current_frame,
+            void *client_data) {
     return ((SoftFlacEncoder*) client_data)->onEncodedFlacAvailable(
             buffer, bytes, samples, current_frame);
 }
diff --git a/media/libstagefright/codecs/g711/dec/Android.mk b/media/libstagefright/codecs/g711/dec/Android.mk
index 4c80da6..a0112e1 100644
--- a/media/libstagefright/codecs/g711/dec/Android.mk
+++ b/media/libstagefright/codecs/g711/dec/Android.mk
@@ -14,4 +14,6 @@
 LOCAL_MODULE := libstagefright_soft_g711dec
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/g711/dec/SoftG711.cpp b/media/libstagefright/codecs/g711/dec/SoftG711.cpp
index bcdd3c7..160ada0 100644
--- a/media/libstagefright/codecs/g711/dec/SoftG711.cpp
+++ b/media/libstagefright/codecs/g711/dec/SoftG711.cpp
@@ -182,7 +182,7 @@
     }
 }
 
-void SoftG711::onQueueFilled(OMX_U32 portIndex) {
+void SoftG711::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError) {
         return;
     }
diff --git a/media/libstagefright/codecs/gsm/dec/Android.mk b/media/libstagefright/codecs/gsm/dec/Android.mk
index 71613d2..30868d5 100644
--- a/media/libstagefright/codecs/gsm/dec/Android.mk
+++ b/media/libstagefright/codecs/gsm/dec/Android.mk
@@ -9,6 +9,8 @@
         frameworks/native/include/media/openmax \
         external/libgsm/inc
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES := \
         libstagefright libstagefright_omx libstagefright_foundation libutils liblog
 
diff --git a/media/libstagefright/codecs/gsm/dec/SoftGSM.cpp b/media/libstagefright/codecs/gsm/dec/SoftGSM.cpp
index 00e0c85..18f7d29 100644
--- a/media/libstagefright/codecs/gsm/dec/SoftGSM.cpp
+++ b/media/libstagefright/codecs/gsm/dec/SoftGSM.cpp
@@ -172,7 +172,7 @@
     }
 }
 
-void SoftGSM::onQueueFilled(OMX_U32 portIndex) {
+void SoftGSM::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError) {
         return;
     }
diff --git a/media/libstagefright/codecs/m4v_h263/dec/Android.mk b/media/libstagefright/codecs/m4v_h263/dec/Android.mk
index a3d5779..1d232c6 100644
--- a/media/libstagefright/codecs/m4v_h263/dec/Android.mk
+++ b/media/libstagefright/codecs/m4v_h263/dec/Android.mk
@@ -46,6 +46,8 @@
 
 LOCAL_CFLAGS := -DOSCL_EXPORT_REF= -DOSCL_IMPORT_REF=
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
 
 ################################################################################
@@ -72,4 +74,6 @@
 LOCAL_MODULE := libstagefright_soft_mpeg4dec
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp b/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp
index fb2a430..0d1ab71 100644
--- a/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp
+++ b/media/libstagefright/codecs/m4v_h263/dec/SoftMPEG4.cpp
@@ -91,7 +91,7 @@
     return OK;
 }
 
-void SoftMPEG4::onQueueFilled(OMX_U32 portIndex) {
+void SoftMPEG4::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError || mOutputPortSettingsChange != NONE) {
         return;
     }
diff --git a/media/libstagefright/codecs/m4v_h263/enc/Android.mk b/media/libstagefright/codecs/m4v_h263/enc/Android.mk
index 83a2dd2..c9006d9 100644
--- a/media/libstagefright/codecs/m4v_h263/enc/Android.mk
+++ b/media/libstagefright/codecs/m4v_h263/enc/Android.mk
@@ -33,6 +33,8 @@
     $(TOP)/frameworks/av/media/libstagefright/include \
     $(TOP)/frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
 
 ################################################################################
@@ -72,4 +74,6 @@
 LOCAL_MODULE := libstagefright_soft_mpeg4enc
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp b/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp
index e02af90..c084277 100644
--- a/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp
+++ b/media/libstagefright/codecs/m4v_h263/enc/SoftMPEG4Encoder.cpp
@@ -620,7 +620,7 @@
     }
 }
 
-void SoftMPEG4Encoder::onQueueFilled(OMX_U32 portIndex) {
+void SoftMPEG4Encoder::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError || mSawInputEOS) {
         return;
     }
diff --git a/media/libstagefright/codecs/mp3dec/Android.mk b/media/libstagefright/codecs/mp3dec/Android.mk
index 135c715..8284490 100644
--- a/media/libstagefright/codecs/mp3dec/Android.mk
+++ b/media/libstagefright/codecs/mp3dec/Android.mk
@@ -50,6 +50,8 @@
 LOCAL_CFLAGS := \
         -DOSCL_UNUSED_ARG=
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := libstagefright_mp3dec
 
 LOCAL_ARM_MODE := arm
@@ -69,6 +71,8 @@
         $(LOCAL_PATH)/src \
         $(LOCAL_PATH)/include
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES := \
         libstagefright libstagefright_omx libstagefright_foundation libutils liblog
 
diff --git a/media/libstagefright/codecs/mp3dec/SoftMP3.cpp b/media/libstagefright/codecs/mp3dec/SoftMP3.cpp
index 61df65e..a09ab7c 100644
--- a/media/libstagefright/codecs/mp3dec/SoftMP3.cpp
+++ b/media/libstagefright/codecs/mp3dec/SoftMP3.cpp
@@ -188,7 +188,7 @@
     }
 }
 
-void SoftMP3::onQueueFilled(OMX_U32 portIndex) {
+void SoftMP3::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError || mOutputPortSettingsChange != NONE) {
         return;
     }
diff --git a/media/libstagefright/codecs/mp3dec/src/pvmp3_mpeg2_get_scale_data.cpp b/media/libstagefright/codecs/mp3dec/src/pvmp3_mpeg2_get_scale_data.cpp
index ee42dc5..499672b 100644
--- a/media/libstagefright/codecs/mp3dec/src/pvmp3_mpeg2_get_scale_data.cpp
+++ b/media/libstagefright/codecs/mp3dec/src/pvmp3_mpeg2_get_scale_data.cpp
@@ -139,7 +139,7 @@
     int16 blocknumber = 0;
 
     granuleInfo *gr_info = &(si->ch[ch].gran[gr]);
-    uint32 scalefac_comp, int_scalefac_comp, new_slen[4];
+    uint32 scalefac_comp, int_scalefac_comp, new_slen[4] = { 0,0,0,0 };
 
     scalefac_comp =  gr_info->scalefac_compress;
 
diff --git a/media/libstagefright/codecs/on2/dec/Android.mk b/media/libstagefright/codecs/on2/dec/Android.mk
index 7f2c46d..93ff64c 100644
--- a/media/libstagefright/codecs/on2/dec/Android.mk
+++ b/media/libstagefright/codecs/on2/dec/Android.mk
@@ -20,4 +20,6 @@
 LOCAL_MODULE := libstagefright_soft_vpxdec
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/on2/dec/SoftVPX.cpp b/media/libstagefright/codecs/on2/dec/SoftVPX.cpp
index 476e986..423a057 100644
--- a/media/libstagefright/codecs/on2/dec/SoftVPX.cpp
+++ b/media/libstagefright/codecs/on2/dec/SoftVPX.cpp
@@ -85,7 +85,7 @@
     return OK;
 }
 
-void SoftVPX::onQueueFilled(OMX_U32 portIndex) {
+void SoftVPX::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mOutputPortSettingsChange != NONE) {
         return;
     }
diff --git a/media/libstagefright/codecs/on2/enc/Android.mk b/media/libstagefright/codecs/on2/enc/Android.mk
index 4060a0a..cbb1a89 100644
--- a/media/libstagefright/codecs/on2/enc/Android.mk
+++ b/media/libstagefright/codecs/on2/enc/Android.mk
@@ -26,4 +26,6 @@
 LOCAL_MODULE := libstagefright_soft_vpxenc
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/codecs/on2/h264dec/SoftAVC.cpp b/media/libstagefright/codecs/on2/h264dec/SoftAVC.cpp
index 7ddb13c..a7bde97 100644
--- a/media/libstagefright/codecs/on2/h264dec/SoftAVC.cpp
+++ b/media/libstagefright/codecs/on2/h264dec/SoftAVC.cpp
@@ -98,7 +98,7 @@
     return UNKNOWN_ERROR;
 }
 
-void SoftAVC::onQueueFilled(OMX_U32 portIndex) {
+void SoftAVC::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError || mOutputPortSettingsChange != NONE) {
         return;
     }
diff --git a/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c b/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c
index 2bb4c4d..524a3f0 100644
--- a/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/H264SwDecApi.c
@@ -42,6 +42,8 @@
 #include "h264bsd_decoder.h"
 #include "h264bsd_util.h"
 
+#define UNUSED(x) (void)(x)
+
 /*------------------------------------------------------------------------------
        Version Information
 ------------------------------------------------------------------------------*/
@@ -73,6 +75,7 @@
 #endif
 
 void H264SwDecTrace(char *string) {
+    UNUSED(string);
 }
 
 void* H264SwDecMalloc(u32 size) {
diff --git a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_conceal.c b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_conceal.c
index 493fb9e..7a262ed 100755
--- a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_conceal.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_conceal.c
@@ -267,7 +267,7 @@
     i32 firstPhase[16];
     i32 *pTmp;
     /* neighbours above, below, left and right */
-    i32 a[4], b[4], l[4], r[4];
+    i32 a[4] = { 0,0,0,0 }, b[4], l[4] = { 0,0,0,0 }, r[4];
     u32 A, B, L, R;
 #ifdef H264DEC_OMXDL
     u8 fillBuff[32*21 + 15 + 32];
diff --git a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_reconstruct.c b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_reconstruct.c
index c948776..b409a06 100755
--- a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_reconstruct.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_reconstruct.c
@@ -42,6 +42,8 @@
 #include "armVC.h"
 #endif /* H264DEC_OMXDL */
 
+#define UNUSED(x) (void)(x)
+
 /*------------------------------------------------------------------------------
     2. External compiler flags
 --------------------------------------------------------------------------------
@@ -2136,7 +2138,8 @@
   i32 center,
   i32 right)
 {
-
+    UNUSED(left);
+    UNUSED(right);
     ASSERT(ref);
     ASSERT(fill);
 
diff --git a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_slice_header.c b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_slice_header.c
index a7c6f64..23401c6 100755
--- a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_slice_header.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_slice_header.c
@@ -47,6 +47,8 @@
 #include "h264bsd_nal_unit.h"
 #include "h264bsd_dpb.h"
 
+#define UNUSED(x) (void)(x)
+
 /*------------------------------------------------------------------------------
     2. External compiler flags
 --------------------------------------------------------------------------------
@@ -1407,6 +1409,7 @@
     u32 tmp, value, i;
     i32 ivalue;
     strmData_t tmpStrmData[1];
+    UNUSED(nalUnitType);
 
 /* Code */
 
diff --git a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_util.c b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_util.c
index cc838fd..fb97a28 100755
--- a/media/libstagefright/codecs/on2/h264dec/source/h264bsd_util.c
+++ b/media/libstagefright/codecs/on2/h264dec/source/h264bsd_util.c
@@ -186,7 +186,7 @@
         return(HANTRO_FALSE);
 
     if ( (bits > 8) ||
-         ((h264bsdShowBits32(pStrmData)>>(32-bits)) != (1 << (bits-1))) )
+         ((h264bsdShowBits32(pStrmData)>>(32-bits)) != (1ul << (bits-1))) )
         return(HANTRO_TRUE);
     else
         return(HANTRO_FALSE);
diff --git a/media/libstagefright/codecs/raw/Android.mk b/media/libstagefright/codecs/raw/Android.mk
index fe90a03..87080e7 100644
--- a/media/libstagefright/codecs/raw/Android.mk
+++ b/media/libstagefright/codecs/raw/Android.mk
@@ -8,6 +8,8 @@
         frameworks/av/media/libstagefright/include \
         frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES := \
         libstagefright_omx libstagefright_foundation libutils liblog
 
diff --git a/media/libstagefright/codecs/raw/SoftRaw.cpp b/media/libstagefright/codecs/raw/SoftRaw.cpp
index 19d6f13..9d514a6 100644
--- a/media/libstagefright/codecs/raw/SoftRaw.cpp
+++ b/media/libstagefright/codecs/raw/SoftRaw.cpp
@@ -163,7 +163,7 @@
     }
 }
 
-void SoftRaw::onQueueFilled(OMX_U32 portIndex) {
+void SoftRaw::onQueueFilled(OMX_U32 /* portIndex */) {
     if (mSignalledError) {
         return;
     }
diff --git a/media/libstagefright/codecs/vorbis/dec/Android.mk b/media/libstagefright/codecs/vorbis/dec/Android.mk
index 2232353..217a6d2 100644
--- a/media/libstagefright/codecs/vorbis/dec/Android.mk
+++ b/media/libstagefright/codecs/vorbis/dec/Android.mk
@@ -16,4 +16,6 @@
 LOCAL_MODULE := libstagefright_soft_vorbisdec
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/libstagefright/colorconversion/Android.mk b/media/libstagefright/colorconversion/Android.mk
index 59a64ba..1c90957 100644
--- a/media/libstagefright/colorconversion/Android.mk
+++ b/media/libstagefright/colorconversion/Android.mk
@@ -11,4 +11,6 @@
 
 LOCAL_MODULE:= libstagefright_color_conversion
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
diff --git a/media/libstagefright/foundation/ANetworkSession.cpp b/media/libstagefright/foundation/ANetworkSession.cpp
index e629588..08c4a87 100644
--- a/media/libstagefright/foundation/ANetworkSession.cpp
+++ b/media/libstagefright/foundation/ANetworkSession.cpp
@@ -521,7 +521,7 @@
     return err;
 }
 
-void ANetworkSession::Session::dumpFragmentStats(const Fragment &frag) {
+void ANetworkSession::Session::dumpFragmentStats(const Fragment & /* frag */) {
 #if 0
     int64_t nowUs = ALooper::GetNowUs();
     int64_t delayMs = (nowUs - frag.mTimeUs) / 1000ll;
diff --git a/media/libstagefright/foundation/Android.mk b/media/libstagefright/foundation/Android.mk
index ad2dab5..90a6a23 100644
--- a/media/libstagefright/foundation/Android.mk
+++ b/media/libstagefright/foundation/Android.mk
@@ -24,7 +24,7 @@
         libutils          \
         liblog
 
-LOCAL_CFLAGS += -Wno-multichar
+LOCAL_CFLAGS += -Wno-multichar -Werror
 
 LOCAL_MODULE:= libstagefright_foundation
 
diff --git a/media/libstagefright/http/Android.mk b/media/libstagefright/http/Android.mk
index a6b481f..7f3307d 100644
--- a/media/libstagefright/http/Android.mk
+++ b/media/libstagefright/http/Android.mk
@@ -21,6 +21,8 @@
 
 LOCAL_CFLAGS += -Wno-multichar
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_SHARED_LIBRARY)
 
 endif
diff --git a/media/libstagefright/httplive/Android.mk b/media/libstagefright/httplive/Android.mk
index f3529f9..e8d558c 100644
--- a/media/libstagefright/httplive/Android.mk
+++ b/media/libstagefright/httplive/Android.mk
@@ -13,6 +13,8 @@
 	$(TOP)/frameworks/native/include/media/openmax \
 	$(TOP)/external/openssl/include
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES := \
         libbinder \
         libcrypto \
diff --git a/media/libstagefright/httplive/M3UParser.cpp b/media/libstagefright/httplive/M3UParser.cpp
index 5ef7c0f..39d80fc 100644
--- a/media/libstagefright/httplive/M3UParser.cpp
+++ b/media/libstagefright/httplive/M3UParser.cpp
@@ -125,7 +125,7 @@
                 mSelectedIndex = strtoul(value, &end, 10);
                 CHECK(end > value && *end == '\0');
 
-                if (mSelectedIndex >= mMediaItems.size()) {
+                if (mSelectedIndex >= (ssize_t)mMediaItems.size()) {
                     mSelectedIndex = mMediaItems.size() - 1;
                 }
             } else {
@@ -165,14 +165,14 @@
             ALOGE("track %d does not exist", index);
             return INVALID_OPERATION;
         }
-        if (mSelectedIndex == index) {
+        if (mSelectedIndex == (ssize_t)index) {
             ALOGE("track %d already selected", index);
             return BAD_VALUE;
         }
         ALOGV("selected track %d", index);
         mSelectedIndex = index;
     } else {
-        if (mSelectedIndex != index) {
+        if (mSelectedIndex != (ssize_t)index) {
             ALOGE("track %d is not selected", index);
             return BAD_VALUE;
         }
diff --git a/media/libstagefright/httplive/PlaylistFetcher.cpp b/media/libstagefright/httplive/PlaylistFetcher.cpp
index f095987..4d29366 100644
--- a/media/libstagefright/httplive/PlaylistFetcher.cpp
+++ b/media/libstagefright/httplive/PlaylistFetcher.cpp
@@ -602,7 +602,7 @@
 
         if (mPlaylist->isComplete() || mPlaylist->isEvent()) {
             mSeqNumber = getSeqNumberForTime(mStartTimeUs);
-            ALOGV("Initial sequence number for time %lld is %ld from (%ld .. %ld)",
+            ALOGV("Initial sequence number for time %lld is %d from (%d .. %d)",
                     mStartTimeUs, mSeqNumber, firstSeqNumberInPlaylist,
                     lastSeqNumberInPlaylist);
         } else {
@@ -611,7 +611,7 @@
             if (mSeqNumber < firstSeqNumberInPlaylist) {
                 mSeqNumber = firstSeqNumberInPlaylist;
             }
-            ALOGV("Initial sequence number for live event %ld from (%ld .. %ld)",
+            ALOGV("Initial sequence number for live event %d from (%d .. %d)",
                     mSeqNumber, firstSeqNumberInPlaylist,
                     lastSeqNumberInPlaylist);
         }
@@ -635,7 +635,8 @@
                 if (delayUs > kMaxMonitorDelayUs) {
                     delayUs = kMaxMonitorDelayUs;
                 }
-                ALOGV("sequence number high: %ld from (%ld .. %ld), monitor in %lld (retry=%d)",
+                ALOGV("sequence number high: %d from (%d .. %d), "
+                      "monitor in %lld (retry=%d)",
                         mSeqNumber, firstSeqNumberInPlaylist,
                         lastSeqNumberInPlaylist, delayUs, mNumRetries);
                 postMonitorQueue(delayUs);
diff --git a/media/libstagefright/id3/Android.mk b/media/libstagefright/id3/Android.mk
index bf6f7bb..2194c38 100644
--- a/media/libstagefright/id3/Android.mk
+++ b/media/libstagefright/id3/Android.mk
@@ -4,6 +4,8 @@
 LOCAL_SRC_FILES := \
 	ID3.cpp
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := libstagefright_id3
 
 include $(BUILD_STATIC_LIBRARY)
@@ -15,6 +17,8 @@
 LOCAL_SRC_FILES := \
 	testid3.cpp
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES := \
 	libstagefright libutils liblog libbinder libstagefright_foundation
 
diff --git a/media/libstagefright/include/TimedEventQueue.h b/media/libstagefright/include/TimedEventQueue.h
index 3e84256..2963150 100644
--- a/media/libstagefright/include/TimedEventQueue.h
+++ b/media/libstagefright/include/TimedEventQueue.h
@@ -122,7 +122,7 @@
     };
 
     struct StopEvent : public TimedEventQueue::Event {
-        virtual void fire(TimedEventQueue *queue, int64_t now_us) {
+        virtual void fire(TimedEventQueue *queue, int64_t /* now_us */) {
             queue->mStopped = true;
         }
     };
diff --git a/media/libstagefright/matroska/Android.mk b/media/libstagefright/matroska/Android.mk
index 2d8c1e1..446ff8c 100644
--- a/media/libstagefright/matroska/Android.mk
+++ b/media/libstagefright/matroska/Android.mk
@@ -8,7 +8,7 @@
         $(TOP)/external/libvpx/libwebm \
         $(TOP)/frameworks/native/include/media/openmax \
 
-LOCAL_CFLAGS += -Wno-multichar
+LOCAL_CFLAGS += -Wno-multichar -Werror
 
 LOCAL_MODULE:= libstagefright_matroska
 
diff --git a/media/libstagefright/matroska/MatroskaExtractor.cpp b/media/libstagefright/matroska/MatroskaExtractor.cpp
index dcb1cda..6f69d0b 100644
--- a/media/libstagefright/matroska/MatroskaExtractor.cpp
+++ b/media/libstagefright/matroska/MatroskaExtractor.cpp
@@ -193,7 +193,7 @@
     clearPendingFrames();
 }
 
-status_t MatroskaSource::start(MetaData *params) {
+status_t MatroskaSource::start(MetaData * /* params */) {
     mBlockIter.reset();
 
     return OK;
@@ -410,7 +410,7 @@
             // Accept the first key frame
             *actualFrameTimeUs = (block()->GetTime(mCluster) + 500LL) / 1000LL;
             ALOGV("Requested seek point: %lld actual: %lld",
-                  seekTimeUs, actualFrameTimeUs);
+                  seekTimeUs, *actualFrameTimeUs);
             break;
         }
     }
diff --git a/media/libstagefright/mp4/FragmentedMP4Parser.cpp b/media/libstagefright/mp4/FragmentedMP4Parser.cpp
index 0102656..0639bec 100644
--- a/media/libstagefright/mp4/FragmentedMP4Parser.cpp
+++ b/media/libstagefright/mp4/FragmentedMP4Parser.cpp
@@ -32,6 +32,11 @@
 #include <media/stagefright/MediaErrors.h>
 #include <media/stagefright/Utils.h>
 
+#if LOG_NDEBUG
+#define UNUSED_UNLESS_VERBOSE(x) (void)(x)
+#else
+#define UNUSED_UNLESS_VERBOSE(x)
+#endif
 
 namespace android {
 
@@ -463,7 +468,9 @@
                     mBuffer->data() + mBuffer->size(), needed);
 
             if (n < (ssize_t)needed) {
-                ALOGV("Reached EOF when reading %d @ %d + %d", needed, mBufferPos, mBuffer->size());
+                ALOGV("Reached EOF when reading %d @ %ld + %zu",
+                      needed, mBufferPos, mBuffer->size());
+
                 if (n < 0) {
                     mFinalResult = n;
                 } else if (n == 0) {
@@ -636,7 +643,7 @@
         // This is a container box.
         if (type == FOURCC('m', 'o', 'o', 'f')) {
             if (mFirstMoofOffset == 0) {
-                ALOGV("first moof @ %08x", mBufferPos + offset);
+                ALOGV("first moof @ %08lx", mBufferPos + offset);
                 mFirstMoofOffset = mBufferPos + offset - 8; // point at the size
             }
         }
@@ -1137,7 +1144,7 @@
 }
 
 status_t FragmentedMP4Parser::parseTrackHeader(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     if (offset + 4 > size) {
         return -EINVAL;
     }
@@ -1188,7 +1195,7 @@
 }
 
 status_t FragmentedMP4Parser::parseMediaHeader(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     if (offset + 4 > size) {
         return -EINVAL;
     }
@@ -1221,7 +1228,7 @@
 }
 
 status_t FragmentedMP4Parser::parseMediaHandler(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     if (offset + 12 > size) {
         return -EINVAL;
     }
@@ -1388,7 +1395,7 @@
 }
 
 status_t FragmentedMP4Parser::parseAVCCodecSpecificData(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     TrackInfo *trackInfo = editTrack(mCurrentTrackID);
 
     SampleDescription *sampleDesc =
@@ -1471,7 +1478,7 @@
 }
 
 status_t FragmentedMP4Parser::parseESDSCodecSpecificData(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     TrackInfo *trackInfo = editTrack(mCurrentTrackID);
 
     SampleDescription *sampleDesc =
@@ -1576,7 +1583,7 @@
 }
 
 status_t FragmentedMP4Parser::parseMediaData(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     ALOGV("skipping 'mdat' chunk at offsets 0x%08lx-0x%08llx.",
           mBufferPos + offset, mBufferPos + size);
 
@@ -1598,6 +1605,7 @@
 
 status_t FragmentedMP4Parser::parseSegmentIndex(
         uint32_t type, size_t offset, uint64_t size) {
+    UNUSED_UNLESS_VERBOSE(type);
     ALOGV("sidx box type %d, offset %d, size %d", type, int(offset), int(size));
 //    AString sidxstr;
 //    hexdump(mBuffer->data() + offset, size, 0 /* indent */, &sidxstr);
@@ -1684,7 +1692,7 @@
 }
 
 status_t FragmentedMP4Parser::parseTrackExtends(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     if (offset + 24 > size) {
         return -EINVAL;
     }
@@ -1735,7 +1743,7 @@
 }
 
 status_t FragmentedMP4Parser::parseTrackFragmentHeader(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     if (offset + 8 > size) {
         return -EINVAL;
     }
@@ -1825,7 +1833,7 @@
 }
 
 status_t FragmentedMP4Parser::parseTrackFragmentRun(
-        uint32_t type, size_t offset, uint64_t size) {
+        uint32_t /* type */, size_t offset, uint64_t size) {
     if (offset + 8 > size) {
         return -EINVAL;
     }
diff --git a/media/libstagefright/mp4/TrackFragment.cpp b/media/libstagefright/mp4/TrackFragment.cpp
index 3699038..3e0056d 100644
--- a/media/libstagefright/mp4/TrackFragment.cpp
+++ b/media/libstagefright/mp4/TrackFragment.cpp
@@ -241,7 +241,10 @@
 }
 
 status_t FragmentedMP4Parser::StaticTrackFragment::parseSampleSizes(
-        FragmentedMP4Parser *parser, uint32_t type, size_t offset, uint64_t size) {
+        FragmentedMP4Parser *parser,
+        uint32_t /* type */,
+        size_t offset,
+        uint64_t size) {
     if (offset + 12 > size) {
         return ERROR_MALFORMED;
     }
@@ -265,7 +268,10 @@
 }
 
 status_t FragmentedMP4Parser::StaticTrackFragment::parseCompactSampleSizes(
-        FragmentedMP4Parser *parser, uint32_t type, size_t offset, uint64_t size) {
+        FragmentedMP4Parser *parser,
+        uint32_t /* type */,
+        size_t offset,
+        uint64_t size) {
     if (offset + 12 > size) {
         return ERROR_MALFORMED;
     }
@@ -294,7 +300,10 @@
 }
 
 status_t FragmentedMP4Parser::StaticTrackFragment::parseSampleToChunk(
-        FragmentedMP4Parser *parser, uint32_t type, size_t offset, uint64_t size) {
+        FragmentedMP4Parser *parser,
+        uint32_t /* type */,
+        size_t offset,
+        uint64_t size) {
     if (offset + 8 > size) {
         return ERROR_MALFORMED;
     }
@@ -319,7 +328,10 @@
 }
 
 status_t FragmentedMP4Parser::StaticTrackFragment::parseChunkOffsets(
-        FragmentedMP4Parser *parser, uint32_t type, size_t offset, uint64_t size) {
+        FragmentedMP4Parser *parser,
+        uint32_t /* type */,
+        size_t offset,
+        uint64_t size) {
     if (offset + 8 > size) {
         return ERROR_MALFORMED;
     }
@@ -340,7 +352,10 @@
 }
 
 status_t FragmentedMP4Parser::StaticTrackFragment::parseChunkOffsets64(
-        FragmentedMP4Parser *parser, uint32_t type, size_t offset, uint64_t size) {
+        FragmentedMP4Parser *parser,
+        uint32_t /* type */,
+        size_t offset,
+        uint64_t size) {
     if (offset + 8 > size) {
         return ERROR_MALFORMED;
     }
diff --git a/media/libstagefright/mpeg2ts/ATSParser.cpp b/media/libstagefright/mpeg2ts/ATSParser.cpp
index cb57a2f..d039f7d 100644
--- a/media/libstagefright/mpeg2ts/ATSParser.cpp
+++ b/media/libstagefright/mpeg2ts/ATSParser.cpp
@@ -862,7 +862,7 @@
 }
 
 void ATSParser::Stream::onPayloadData(
-        unsigned PTS_DTS_flags, uint64_t PTS, uint64_t DTS,
+        unsigned PTS_DTS_flags, uint64_t PTS, uint64_t /* DTS */,
         const uint8_t *data, size_t size) {
 #if 0
     ALOGI("payload streamType 0x%02x, PTS = 0x%016llx, dPTS = %lld",
@@ -1267,7 +1267,7 @@
 }
 
 void ATSParser::updatePCR(
-        unsigned PID, uint64_t PCR, size_t byteOffsetFromStart) {
+        unsigned /* PID */, uint64_t PCR, size_t byteOffsetFromStart) {
     ALOGV("PCR 0x%016llx @ %d", PCR, byteOffsetFromStart);
 
     if (mNumPCRs == 2) {
diff --git a/media/libstagefright/mpeg2ts/Android.mk b/media/libstagefright/mpeg2ts/Android.mk
index c1a7a9d..c17a0b7 100644
--- a/media/libstagefright/mpeg2ts/Android.mk
+++ b/media/libstagefright/mpeg2ts/Android.mk
@@ -13,6 +13,8 @@
 	$(TOP)/frameworks/av/media/libstagefright \
 	$(TOP)/frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE:= libstagefright_mpeg2ts
 
 ifeq ($(TARGET_ARCH),arm)
diff --git a/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp b/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp
index 52fb2a5..9fb13c1 100644
--- a/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp
+++ b/media/libstagefright/mpeg2ts/AnotherPacketSource.cpp
@@ -61,7 +61,7 @@
 AnotherPacketSource::~AnotherPacketSource() {
 }
 
-status_t AnotherPacketSource::start(MetaData *params) {
+status_t AnotherPacketSource::start(MetaData * /* params */) {
     return OK;
 }
 
diff --git a/media/libstagefright/mpeg2ts/MPEG2PSExtractor.cpp b/media/libstagefright/mpeg2ts/MPEG2PSExtractor.cpp
index dd714c99..bc2a16d 100644
--- a/media/libstagefright/mpeg2ts/MPEG2PSExtractor.cpp
+++ b/media/libstagefright/mpeg2ts/MPEG2PSExtractor.cpp
@@ -130,7 +130,8 @@
     return new WrappedTrack(this, mTracks.valueAt(index));
 }
 
-sp<MetaData> MPEG2PSExtractor::getTrackMetaData(size_t index, uint32_t flags) {
+sp<MetaData> MPEG2PSExtractor::getTrackMetaData(
+        size_t index, uint32_t /* flags */) {
     if (index >= mTracks.size()) {
         return NULL;
     }
@@ -625,7 +626,7 @@
 
 status_t MPEG2PSExtractor::Track::appendPESData(
         unsigned PTS_DTS_flags,
-        uint64_t PTS, uint64_t DTS,
+        uint64_t PTS, uint64_t /* DTS */,
         const uint8_t *data, size_t size) {
     if (mQueue == NULL) {
         return OK;
diff --git a/media/libstagefright/mpeg2ts/MPEG2TSExtractor.cpp b/media/libstagefright/mpeg2ts/MPEG2TSExtractor.cpp
index d449c34..35ca118 100644
--- a/media/libstagefright/mpeg2ts/MPEG2TSExtractor.cpp
+++ b/media/libstagefright/mpeg2ts/MPEG2TSExtractor.cpp
@@ -141,7 +141,7 @@
 }
 
 sp<MetaData> MPEG2TSExtractor::getTrackMetaData(
-        size_t index, uint32_t flags) {
+        size_t index, uint32_t /* flags */) {
     return index < mSourceImpls.size()
         ? mSourceImpls.editItemAt(index)->getFormat() : NULL;
 }
diff --git a/media/libstagefright/omx/Android.mk b/media/libstagefright/omx/Android.mk
index cd912e7..37b289f 100644
--- a/media/libstagefright/omx/Android.mk
+++ b/media/libstagefright/omx/Android.mk
@@ -16,6 +16,8 @@
         $(TOP)/frameworks/native/include/media/hardware \
         $(TOP)/frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES :=               \
         libbinder                       \
         libmedia                        \
diff --git a/media/libstagefright/omx/GraphicBufferSource.cpp b/media/libstagefright/omx/GraphicBufferSource.cpp
index 1e6de55..7672204 100644
--- a/media/libstagefright/omx/GraphicBufferSource.cpp
+++ b/media/libstagefright/omx/GraphicBufferSource.cpp
@@ -41,11 +41,11 @@
     mNumFramesAvailable(0),
     mEndOfStream(false),
     mEndOfStreamSent(false),
-    mRepeatAfterUs(-1ll),
     mMaxTimestampGapUs(-1ll),
     mPrevOriginalTimeUs(-1ll),
     mPrevModifiedTimeUs(-1ll),
     mSkipFramesBeforeNs(-1ll),
+    mRepeatAfterUs(-1ll),
     mRepeatLastFrameGeneration(0),
     mRepeatLastFrameTimestamp(-1ll),
     mLatestSubmittedBufferId(-1),
diff --git a/media/libstagefright/omx/OMX.cpp b/media/libstagefright/omx/OMX.cpp
index 274f2eb..a608479 100644
--- a/media/libstagefright/omx/OMX.cpp
+++ b/media/libstagefright/omx/OMX.cpp
@@ -185,7 +185,7 @@
     instance->onObserverDied(mMaster);
 }
 
-bool OMX::livesLocally(node_id node, pid_t pid) {
+bool OMX::livesLocally(node_id /* node */, pid_t pid) {
     return pid == getpid();
 }
 
@@ -424,7 +424,7 @@
         OMX_IN OMX_EVENTTYPE eEvent,
         OMX_IN OMX_U32 nData1,
         OMX_IN OMX_U32 nData2,
-        OMX_IN OMX_PTR pEventData) {
+        OMX_IN OMX_PTR /* pEventData */) {
     ALOGV("OnEvent(%d, %ld, %ld)", eEvent, nData1, nData2);
 
     // Forward to OMXNodeInstance.
diff --git a/media/libstagefright/omx/OMXNodeInstance.cpp b/media/libstagefright/omx/OMXNodeInstance.cpp
index dba522f..aa96389 100644
--- a/media/libstagefright/omx/OMXNodeInstance.cpp
+++ b/media/libstagefright/omx/OMXNodeInstance.cpp
@@ -266,7 +266,7 @@
 }
 
 status_t OMXNodeInstance::getParameter(
-        OMX_INDEXTYPE index, void *params, size_t size) {
+        OMX_INDEXTYPE index, void *params, size_t /* size */) {
     Mutex::Autolock autoLock(mLock);
 
     OMX_ERRORTYPE err = OMX_GetParameter(mHandle, index, params);
@@ -275,7 +275,7 @@
 }
 
 status_t OMXNodeInstance::setParameter(
-        OMX_INDEXTYPE index, const void *params, size_t size) {
+        OMX_INDEXTYPE index, const void *params, size_t /* size */) {
     Mutex::Autolock autoLock(mLock);
 
     OMX_ERRORTYPE err = OMX_SetParameter(
@@ -285,7 +285,7 @@
 }
 
 status_t OMXNodeInstance::getConfig(
-        OMX_INDEXTYPE index, void *params, size_t size) {
+        OMX_INDEXTYPE index, void *params, size_t /* size */) {
     Mutex::Autolock autoLock(mLock);
 
     OMX_ERRORTYPE err = OMX_GetConfig(mHandle, index, params);
@@ -293,7 +293,7 @@
 }
 
 status_t OMXNodeInstance::setConfig(
-        OMX_INDEXTYPE index, const void *params, size_t size) {
+        OMX_INDEXTYPE index, const void *params, size_t /* size */) {
     Mutex::Autolock autoLock(mLock);
 
     OMX_ERRORTYPE err = OMX_SetConfig(
@@ -610,7 +610,7 @@
 }
 
 status_t OMXNodeInstance::updateGraphicBufferInMeta(
-        OMX_U32 portIndex, const sp<GraphicBuffer>& graphicBuffer,
+        OMX_U32 /* portIndex */, const sp<GraphicBuffer>& graphicBuffer,
         OMX::buffer_id buffer) {
     Mutex::Autolock autoLock(mLock);
 
@@ -971,7 +971,7 @@
 
 // static
 OMX_ERRORTYPE OMXNodeInstance::OnEvent(
-        OMX_IN OMX_HANDLETYPE hComponent,
+        OMX_IN OMX_HANDLETYPE /* hComponent */,
         OMX_IN OMX_PTR pAppData,
         OMX_IN OMX_EVENTTYPE eEvent,
         OMX_IN OMX_U32 nData1,
@@ -987,7 +987,7 @@
 
 // static
 OMX_ERRORTYPE OMXNodeInstance::OnEmptyBufferDone(
-        OMX_IN OMX_HANDLETYPE hComponent,
+        OMX_IN OMX_HANDLETYPE /* hComponent */,
         OMX_IN OMX_PTR pAppData,
         OMX_IN OMX_BUFFERHEADERTYPE* pBuffer) {
     OMXNodeInstance *instance = static_cast<OMXNodeInstance *>(pAppData);
@@ -999,7 +999,7 @@
 
 // static
 OMX_ERRORTYPE OMXNodeInstance::OnFillBufferDone(
-        OMX_IN OMX_HANDLETYPE hComponent,
+        OMX_IN OMX_HANDLETYPE /* hComponent */,
         OMX_IN OMX_PTR pAppData,
         OMX_IN OMX_BUFFERHEADERTYPE* pBuffer) {
     OMXNodeInstance *instance = static_cast<OMXNodeInstance *>(pAppData);
diff --git a/media/libstagefright/omx/SoftOMXComponent.cpp b/media/libstagefright/omx/SoftOMXComponent.cpp
index b1c34dc..646cd32 100644
--- a/media/libstagefright/omx/SoftOMXComponent.cpp
+++ b/media/libstagefright/omx/SoftOMXComponent.cpp
@@ -257,69 +257,69 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 OMX_ERRORTYPE SoftOMXComponent::sendCommand(
-        OMX_COMMANDTYPE cmd, OMX_U32 param, OMX_PTR data) {
+        OMX_COMMANDTYPE /* cmd */, OMX_U32 /* param */, OMX_PTR /* data */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::getParameter(
-        OMX_INDEXTYPE index, OMX_PTR params) {
+        OMX_INDEXTYPE /* index */, OMX_PTR /* params */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::setParameter(
-        OMX_INDEXTYPE index, const OMX_PTR params) {
+        OMX_INDEXTYPE /* index */, const OMX_PTR /* params */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::getConfig(
-        OMX_INDEXTYPE index, OMX_PTR params) {
+        OMX_INDEXTYPE /* index */, OMX_PTR /* params */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::setConfig(
-        OMX_INDEXTYPE index, const OMX_PTR params) {
+        OMX_INDEXTYPE /* index */, const OMX_PTR /* params */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::getExtensionIndex(
-        const char *name, OMX_INDEXTYPE *index) {
+        const char * /* name */, OMX_INDEXTYPE * /* index */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::useBuffer(
-        OMX_BUFFERHEADERTYPE **buffer,
-        OMX_U32 portIndex,
-        OMX_PTR appPrivate,
-        OMX_U32 size,
-        OMX_U8 *ptr) {
+        OMX_BUFFERHEADERTYPE ** /* buffer */,
+        OMX_U32 /* portIndex */,
+        OMX_PTR /* appPrivate */,
+        OMX_U32 /* size */,
+        OMX_U8 * /* ptr */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::allocateBuffer(
-        OMX_BUFFERHEADERTYPE **buffer,
-        OMX_U32 portIndex,
-        OMX_PTR appPrivate,
-        OMX_U32 size) {
+        OMX_BUFFERHEADERTYPE ** /* buffer */,
+        OMX_U32 /* portIndex */,
+        OMX_PTR /* appPrivate */,
+        OMX_U32 /* size */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::freeBuffer(
-        OMX_U32 portIndex,
-        OMX_BUFFERHEADERTYPE *buffer) {
+        OMX_U32 /* portIndex */,
+        OMX_BUFFERHEADERTYPE * /* buffer */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::emptyThisBuffer(
-        OMX_BUFFERHEADERTYPE *buffer) {
+        OMX_BUFFERHEADERTYPE * /* buffer */) {
     return OMX_ErrorUndefined;
 }
 
 OMX_ERRORTYPE SoftOMXComponent::fillThisBuffer(
-        OMX_BUFFERHEADERTYPE *buffer) {
+        OMX_BUFFERHEADERTYPE * /* buffer */) {
     return OMX_ErrorUndefined;
 }
 
-OMX_ERRORTYPE SoftOMXComponent::getState(OMX_STATETYPE *state) {
+OMX_ERRORTYPE SoftOMXComponent::getState(OMX_STATETYPE * /* state */) {
     return OMX_ErrorUndefined;
 }
 
diff --git a/media/libstagefright/omx/SoftOMXPlugin.cpp b/media/libstagefright/omx/SoftOMXPlugin.cpp
index d6cde73..d49e50b 100644
--- a/media/libstagefright/omx/SoftOMXPlugin.cpp
+++ b/media/libstagefright/omx/SoftOMXPlugin.cpp
@@ -154,7 +154,7 @@
 
 OMX_ERRORTYPE SoftOMXPlugin::enumerateComponents(
         OMX_STRING name,
-        size_t size,
+        size_t /* size */,
         OMX_U32 index) {
     if (index >= kNumComponents) {
         return OMX_ErrorNoMore;
diff --git a/media/libstagefright/omx/tests/Android.mk b/media/libstagefright/omx/tests/Android.mk
index 1061c39..8b79af4 100644
--- a/media/libstagefright/omx/tests/Android.mk
+++ b/media/libstagefright/omx/tests/Android.mk
@@ -11,6 +11,8 @@
 	$(TOP)/frameworks/av/media/libstagefright \
 	$(TOP)/frameworks/native/include/media/openmax
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_MODULE := omx_tests
 
 LOCAL_MODULE_TAGS := tests
diff --git a/media/libstagefright/rtsp/AMPEG2TSAssembler.cpp b/media/libstagefright/rtsp/AMPEG2TSAssembler.cpp
index 4c9bf5b..dca5c89 100644
--- a/media/libstagefright/rtsp/AMPEG2TSAssembler.cpp
+++ b/media/libstagefright/rtsp/AMPEG2TSAssembler.cpp
@@ -34,7 +34,9 @@
 namespace android {
 
 AMPEG2TSAssembler::AMPEG2TSAssembler(
-        const sp<AMessage> &notify, const char *desc, const AString &params)
+        const sp<AMessage> &notify,
+        const char * /* desc */,
+        const AString & /* params */)
     : mNotifyMsg(notify),
       mNextExpectedSeqNoValid(false),
       mNextExpectedSeqNo(0) {
diff --git a/media/libstagefright/rtsp/ARTPWriter.cpp b/media/libstagefright/rtsp/ARTPWriter.cpp
index 0d07043..c46d16f 100644
--- a/media/libstagefright/rtsp/ARTPWriter.cpp
+++ b/media/libstagefright/rtsp/ARTPWriter.cpp
@@ -114,7 +114,7 @@
     return (mFlags & kFlagEOS) != 0;
 }
 
-status_t ARTPWriter::start(MetaData *params) {
+status_t ARTPWriter::start(MetaData * /* params */) {
     Mutex::Autolock autoLock(mLock);
     if (mFlags & kFlagStarted) {
         return INVALID_OPERATION;
diff --git a/media/libstagefright/rtsp/ARawAudioAssembler.cpp b/media/libstagefright/rtsp/ARawAudioAssembler.cpp
index 0da5dd2..167f7a4 100644
--- a/media/libstagefright/rtsp/ARawAudioAssembler.cpp
+++ b/media/libstagefright/rtsp/ARawAudioAssembler.cpp
@@ -34,7 +34,9 @@
 namespace android {
 
 ARawAudioAssembler::ARawAudioAssembler(
-        const sp<AMessage> &notify, const char *desc, const AString &params)
+        const sp<AMessage> &notify,
+        const char * /* desc */,
+        const AString & /* params */)
     : mNotifyMsg(notify),
       mNextExpectedSeqNoValid(false),
       mNextExpectedSeqNo(0) {
diff --git a/media/libstagefright/rtsp/Android.mk b/media/libstagefright/rtsp/Android.mk
index 02e44f4..39eedc0 100644
--- a/media/libstagefright/rtsp/Android.mk
+++ b/media/libstagefright/rtsp/Android.mk
@@ -30,6 +30,8 @@
     LOCAL_CFLAGS += -Wno-psabi
 endif
 
+LOCAL_CFLAGS += -Werror
+
 include $(BUILD_STATIC_LIBRARY)
 
 ################################################################################
diff --git a/media/libstagefright/rtsp/MyHandler.h b/media/libstagefright/rtsp/MyHandler.h
index cd77aa0..45470a3 100644
--- a/media/libstagefright/rtsp/MyHandler.h
+++ b/media/libstagefright/rtsp/MyHandler.h
@@ -19,7 +19,11 @@
 #define MY_HANDLER_H_
 
 //#define LOG_NDEBUG 0
+
+#ifndef LOG_TAG
 #define LOG_TAG "MyHandler"
+#endif
+
 #include <utils/Log.h>
 
 #include "APacketSource.h"
@@ -42,6 +46,12 @@
 
 #include "HTTPBase.h"
 
+#if LOG_NDEBUG
+#define UNUSED_UNLESS_VERBOSE(x) (void)(x)
+#else
+#define UNUSED_UNLESS_VERBOSE(x)
+#endif
+
 // If no access units are received within 5 secs, assume that the rtp
 // stream has ended and signal end of stream.
 static int64_t kAccessUnitTimeoutUs = 10000000ll;
@@ -178,7 +188,7 @@
         mConn->connect(mOriginalSessionURL.c_str(), reply);
     }
 
-    AString getControlURL(sp<ASessionDescription> desc) {
+    AString getControlURL() {
         AString sessionLevelControlURL;
         if (mSessionDesc->findAttribute(
                 0,
@@ -545,7 +555,7 @@
                                 mBaseURL = tmp;
                             }
 
-                            mControlURL = getControlURL(mSessionDesc);
+                            mControlURL = getControlURL();
 
                             if (mSessionDesc->countTracks() < 2) {
                                 // There's no actual tracks in this session.
@@ -591,7 +601,7 @@
 
                         mSeekable = !isLiveStream(mSessionDesc);
 
-                        mControlURL = getControlURL(mSessionDesc);
+                        mControlURL = getControlURL();
 
                         if (mSessionDesc->countTracks() < 2) {
                             // There's no actual tracks in this session.
@@ -1805,6 +1815,8 @@
     bool addMediaTimestamp(
             int32_t trackIndex, const TrackInfo *track,
             const sp<ABuffer> &accessUnit) {
+        UNUSED_UNLESS_VERBOSE(trackIndex);
+
         uint32_t rtpTime;
         CHECK(accessUnit->meta()->findInt32(
                     "rtp-time", (int32_t *)&rtpTime));
diff --git a/media/libstagefright/timedtext/Android.mk b/media/libstagefright/timedtext/Android.mk
index f099bbd..6a8b9fc 100644
--- a/media/libstagefright/timedtext/Android.mk
+++ b/media/libstagefright/timedtext/Android.mk
@@ -9,7 +9,8 @@
         TimedTextSRTSource.cpp    \
         TimedTextPlayer.cpp
 
-LOCAL_CFLAGS += -Wno-multichar
+LOCAL_CFLAGS += -Wno-multichar -Werror
+
 LOCAL_C_INCLUDES:= \
         $(TOP)/frameworks/av/include/media/stagefright/timedtext \
         $(TOP)/frameworks/av/media/libstagefright
diff --git a/media/libstagefright/timedtext/TimedTextDriver.cpp b/media/libstagefright/timedtext/TimedTextDriver.cpp
index 05d6d02..71aa21e 100644
--- a/media/libstagefright/timedtext/TimedTextDriver.cpp
+++ b/media/libstagefright/timedtext/TimedTextDriver.cpp
@@ -45,6 +45,7 @@
         const sp<IMediaHTTPService> &httpService)
     : mLooper(new ALooper),
       mListener(listener),
+      mHTTPService(httpService),
       mState(UNINITIALIZED),
       mCurrentTrackIndex(UINT_MAX) {
     mLooper->setName("TimedTextDriver");
diff --git a/media/libstagefright/timedtext/TimedTextSource.h b/media/libstagefright/timedtext/TimedTextSource.h
index 756cc31..8c1c1cd 100644
--- a/media/libstagefright/timedtext/TimedTextSource.h
+++ b/media/libstagefright/timedtext/TimedTextSource.h
@@ -47,7 +47,7 @@
           int64_t *endTimeUs,
           Parcel *parcel,
           const MediaSource::ReadOptions *options = NULL) = 0;
-  virtual status_t extractGlobalDescriptions(Parcel *parcel) {
+  virtual status_t extractGlobalDescriptions(Parcel * /* parcel */) {
       return INVALID_OPERATION;
   }
   virtual sp<MetaData> getFormat();
diff --git a/media/libstagefright/wifi-display/Android.mk b/media/libstagefright/wifi-display/Android.mk
index f70454a..3f47bfb 100644
--- a/media/libstagefright/wifi-display/Android.mk
+++ b/media/libstagefright/wifi-display/Android.mk
@@ -19,6 +19,8 @@
         $(TOP)/frameworks/native/include/media/openmax \
         $(TOP)/frameworks/av/media/libstagefright/mpeg2ts \
 
+LOCAL_CFLAGS += -Werror
+
 LOCAL_SHARED_LIBRARIES:= \
         libbinder                       \
         libcutils                       \
diff --git a/media/libstagefright/wifi-display/rtp/RTPSender.cpp b/media/libstagefright/wifi-display/rtp/RTPSender.cpp
index 1887b8b..e88a3bd 100644
--- a/media/libstagefright/wifi-display/rtp/RTPSender.cpp
+++ b/media/libstagefright/wifi-display/rtp/RTPSender.cpp
@@ -685,9 +685,8 @@
     return OK;
 }
 
-status_t RTPSender::parseReceiverReport(const uint8_t *data, size_t size) {
-    // hexdump(data, size);
-
+status_t RTPSender::parseReceiverReport(
+        const uint8_t *data, size_t /* size */) {
     float fractionLost = data[12] / 256.0f;
 
     ALOGI("lost %.2f %% of packets during report interval.",
diff --git a/media/libstagefright/wifi-display/source/WifiDisplaySource.cpp b/media/libstagefright/wifi-display/source/WifiDisplaySource.cpp
index 05e4018..da405e2 100644
--- a/media/libstagefright/wifi-display/source/WifiDisplaySource.cpp
+++ b/media/libstagefright/wifi-display/source/WifiDisplaySource.cpp
@@ -746,7 +746,7 @@
 }
 
 status_t WifiDisplaySource::onReceiveM1Response(
-        int32_t sessionID, const sp<ParsedMessage> &msg) {
+        int32_t /* sessionID */, const sp<ParsedMessage> &msg) {
     int32_t statusCode;
     if (!msg->getStatusCode(&statusCode)) {
         return ERROR_MALFORMED;
@@ -991,7 +991,7 @@
 }
 
 status_t WifiDisplaySource::onReceiveM5Response(
-        int32_t sessionID, const sp<ParsedMessage> &msg) {
+        int32_t /* sessionID */, const sp<ParsedMessage> &msg) {
     int32_t statusCode;
     if (!msg->getStatusCode(&statusCode)) {
         return ERROR_MALFORMED;
@@ -1005,7 +1005,7 @@
 }
 
 status_t WifiDisplaySource::onReceiveM16Response(
-        int32_t sessionID, const sp<ParsedMessage> &msg) {
+        int32_t sessionID, const sp<ParsedMessage> & /* msg */) {
     // If only the response was required to include a "Session:" header...
 
     CHECK_EQ(sessionID, mClientSessionID);
@@ -1680,7 +1680,7 @@
 }
 
 void WifiDisplaySource::HDCPObserver::notify(
-        int msg, int ext1, int ext2, const Parcel *obj) {
+        int msg, int ext1, int ext2, const Parcel * /* obj */) {
     sp<AMessage> notify = mNotify->dup();
     notify->setInt32("msg", msg);
     notify->setInt32("ext1", ext1);
diff --git a/media/libstagefright/yuv/Android.mk b/media/libstagefright/yuv/Android.mk
index b3f7b1b..bb86dfc 100644
--- a/media/libstagefright/yuv/Android.mk
+++ b/media/libstagefright/yuv/Android.mk
@@ -12,5 +12,7 @@
 LOCAL_MODULE:= libstagefright_yuv
 
 
+LOCAL_CFLAGS += -Werror
+
 
 include $(BUILD_SHARED_LIBRARY)