diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index 2672db1..cd7ff92 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -95,7 +95,7 @@
      *  - BAD_VALUE: unsupported configuration
      */
 
-     static status_t getMinFrameCount(int* frameCount,
+     static status_t getMinFrameCount(size_t* frameCount,
                                       uint32_t sampleRate,
                                       audio_format_t format,
                                       audio_channel_mask_t channelMask);
@@ -184,7 +184,7 @@
 
             audio_format_t format() const;
             int         channelCount() const;
-            uint32_t    frameCount() const;
+            size_t      frameCount() const;
             size_t      frameSize() const { return mFrameSize; }
             audio_source_t inputSource() const;
 
@@ -352,7 +352,7 @@
             status_t openRecord_l(uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 audio_io_handle_t input);
             audio_io_handle_t getInput_l();
             status_t restoreRecord_l(audio_track_cblk_t*& cblk);
@@ -375,7 +375,7 @@
     uint32_t                mUpdatePeriod;      // in ms
 
     // constant after constructor or set()
-    uint32_t                mFrameCount;
+    size_t                  mFrameCount;
     audio_format_t          mFormat;
     uint8_t                 mChannelCount;
     size_t                  mFrameSize;         // app-level frame size == AudioFlinger frame size
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 33078bb..126ef12 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -89,7 +89,7 @@
 
     static status_t getOutputSamplingRate(uint32_t* samplingRate,
             audio_stream_type_t stream = AUDIO_STREAM_DEFAULT);
-    static status_t getOutputFrameCount(int* frameCount,
+    static status_t getOutputFrameCount(size_t* frameCount,
             audio_stream_type_t stream = AUDIO_STREAM_DEFAULT);
     static status_t getOutputLatency(uint32_t* latency,
             audio_stream_type_t stream = AUDIO_STREAM_DEFAULT);
@@ -100,7 +100,7 @@
     // audio_stream->get_buffer_size()/audio_stream_frame_size()
     static status_t getFrameCount(audio_io_handle_t output,
                                   audio_stream_type_t stream,
-                                  int* frameCount);
+                                  size_t* frameCount);
     // returns the audio output stream latency in ms. Corresponds to
     // audio_stream_out->get_latency()
     static status_t getLatency(audio_io_handle_t output,
@@ -123,11 +123,11 @@
     // - BAD_VALUE: invalid parameter
     // NOTE: this feature is not supported on all hardware platforms and it is
     // necessary to check returned status before using the returned values.
-    static status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames,
+    static status_t getRenderPosition(size_t *halFrames, size_t *dspFrames,
             audio_stream_type_t stream = AUDIO_STREAM_DEFAULT);
 
     // return the number of input frames lost by HAL implementation, or 0 if the handle is invalid
-    static unsigned int  getInputFramesLost(audio_io_handle_t ioHandle);
+    static size_t getInputFramesLost(audio_io_handle_t ioHandle);
 
     static int newAudioSessionId();
     static void acquireAudioSessionId(int audioSession);
@@ -238,7 +238,7 @@
 
     // helpers for android.media.AudioManager.getProperty(), see description there for meaning
     static uint32_t getPrimaryOutputSamplingRate();
-    static int32_t getPrimaryOutputFrameCount();
+    static size_t getPrimaryOutputFrameCount();
 
     // ----------------------------------------------------------------------------
 
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index 6fd1b9e..f1b26b5 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -110,7 +110,7 @@
      *  - NO_INIT: audio server or audio hardware not initialized
      */
 
-     static status_t getMinFrameCount(int* frameCount,
+     static status_t getMinFrameCount(size_t* frameCount,
                                       audio_stream_type_t streamType = AUDIO_STREAM_DEFAULT,
                                       uint32_t sampleRate = 0);
 
@@ -494,7 +494,7 @@
                                  uint32_t sampleRate,
                                  audio_format_t format,
                                  audio_channel_mask_t channelMask,
-                                 int frameCount,
+                                 size_t frameCount,
                                  audio_output_flags_t flags,
                                  const sp<IMemory>& sharedBuffer,
                                  audio_io_handle_t output);
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 5fd5044..9727143 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -61,7 +61,7 @@
                                 uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 track_flags_t *flags,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_io_handle_t output,
@@ -75,7 +75,7 @@
                                 uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 track_flags_t flags,
                                 pid_t tid,  // -1 means unused, otherwise must be valid non-0
                                 int *sessionId,
@@ -157,10 +157,10 @@
 
     virtual status_t setVoiceVolume(float volume) = 0;
 
-    virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames,
+    virtual status_t getRenderPosition(size_t *halFrames, size_t *dspFrames,
                                     audio_io_handle_t output) const = 0;
 
-    virtual unsigned int getInputFramesLost(audio_io_handle_t ioHandle) const = 0;
+    virtual size_t getInputFramesLost(audio_io_handle_t ioHandle) const = 0;
 
     virtual int newAudioSessionId() = 0;
 
@@ -193,7 +193,7 @@
     // FIXME move these APIs to AudioPolicy to permit a more accurate implementation
     // that looks on primary device for a stream with fast flag, primary flag, or first one.
     virtual uint32_t getPrimaryOutputSamplingRate() = 0;
-    virtual int32_t getPrimaryOutputFrameCount() = 0;
+    virtual size_t getPrimaryOutputFrameCount() = 0;
 
 };
 
diff --git a/libvideoeditor/lvpp/VideoEditorPlayer.cpp b/libvideoeditor/lvpp/VideoEditorPlayer.cpp
index d34b6d3..a47fc15 100755
--- a/libvideoeditor/lvpp/VideoEditorPlayer.cpp
+++ b/libvideoeditor/lvpp/VideoEditorPlayer.cpp
@@ -407,7 +407,7 @@
     ALOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
     if (mTrack) close();
     uint32_t afSampleRate;
-    int afFrameCount;
+    size_t afFrameCount;
     int frameCount;
 
     if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) !=
diff --git a/media/libmedia/AudioRecord.cpp b/media/libmedia/AudioRecord.cpp
index 8f45a57..0587651 100644
--- a/media/libmedia/AudioRecord.cpp
+++ b/media/libmedia/AudioRecord.cpp
@@ -36,7 +36,7 @@
 
 // static
 status_t AudioRecord::getMinFrameCount(
-        int* frameCount,
+        size_t* frameCount,
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask)
@@ -119,15 +119,21 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        int frameCountInt,
         callback_t cbf,
         void* user,
         int notificationFrames,
         bool threadCanCallJava,
         int sessionId)
 {
+    // FIXME "int" here is legacy and will be replaced by size_t later
+    if (frameCountInt < 0) {
+        ALOGE("Invalid frame count %d", frameCountInt);
+        return BAD_VALUE;
+    }
+    size_t frameCount = frameCountInt;
 
-    ALOGV("set(): sampleRate %u, channelMask %#x, frameCount %d", sampleRate, channelMask,
+    ALOGV("set(): sampleRate %u, channelMask %#x, frameCount %u", sampleRate, channelMask,
             frameCount);
 
     AutoMutex lock(mLock);
@@ -177,7 +183,7 @@
     }
 
     // validate framecount
-    int minFrameCount = 0;
+    size_t minFrameCount = 0;
     status_t status = getMinFrameCount(&minFrameCount, sampleRate, format, channelMask);
     if (status != NO_ERROR) {
         return status;
@@ -260,7 +266,7 @@
     return mChannelCount;
 }
 
-uint32_t AudioRecord::frameCount() const
+size_t AudioRecord::frameCount() const
 {
     return mFrameCount;
 }
@@ -427,7 +433,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        size_t frameCount,
         audio_io_handle_t input)
 {
     status_t status;
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index f3b74a2..028e4a3 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -247,7 +247,7 @@
     return NO_ERROR;
 }
 
-status_t AudioSystem::getOutputFrameCount(int* frameCount, audio_stream_type_t streamType)
+status_t AudioSystem::getOutputFrameCount(size_t* frameCount, audio_stream_type_t streamType)
 {
     audio_io_handle_t output;
 
@@ -265,7 +265,7 @@
 
 status_t AudioSystem::getFrameCount(audio_io_handle_t output,
                                     audio_stream_type_t streamType,
-                                    int* frameCount)
+                                    size_t* frameCount)
 {
     OutputDescriptor *outputDesc;
 
@@ -361,7 +361,7 @@
     return af->setVoiceVolume(value);
 }
 
-status_t AudioSystem::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames,
+status_t AudioSystem::getRenderPosition(size_t *halFrames, size_t *dspFrames,
         audio_stream_type_t stream)
 {
     const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
@@ -374,7 +374,7 @@
     return af->getRenderPosition(halFrames, dspFrames, getOutput(stream));
 }
 
-unsigned int AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) {
+size_t AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) {
     const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
     unsigned int result = 0;
     if (af == 0) return result;
@@ -442,7 +442,7 @@
 
         OutputDescriptor *outputDesc =  new OutputDescriptor(*desc);
         gOutputs.add(ioHandle, outputDesc);
-        ALOGV("ioConfigChanged() new output samplingRate %u, format %d channels %#x frameCount %d "
+        ALOGV("ioConfigChanged() new output samplingRate %u, format %d channels %#x frameCount %u "
                 "latency %d",
                 outputDesc->samplingRate, outputDesc->format, outputDesc->channels,
                 outputDesc->frameCount, outputDesc->latency);
@@ -747,7 +747,7 @@
     return af->getPrimaryOutputSamplingRate();
 }
 
-int32_t AudioSystem::getPrimaryOutputFrameCount()
+size_t AudioSystem::getPrimaryOutputFrameCount()
 {
     const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
     if (af == 0) return 0;
diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index 5fb36ee..979ee37 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -50,7 +50,7 @@
 
 // static
 status_t AudioTrack::getMinFrameCount(
-        int* frameCount,
+        size_t* frameCount,
         audio_stream_type_t streamType,
         uint32_t sampleRate)
 {
@@ -69,7 +69,7 @@
     if (AudioSystem::getOutputSamplingRate(&afSampleRate, streamType) != NO_ERROR) {
         return NO_INIT;
     }
-    int afFrameCount;
+    size_t afFrameCount;
     if (AudioSystem::getOutputFrameCount(&afFrameCount, streamType) != NO_ERROR) {
         return NO_INIT;
     }
@@ -166,7 +166,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        int frameCountInt,
         audio_output_flags_t flags,
         callback_t cbf,
         void* user,
@@ -175,11 +175,17 @@
         bool threadCanCallJava,
         int sessionId)
 {
+    // FIXME "int" here is legacy and will be replaced by size_t later
+    if (frameCountInt < 0) {
+        ALOGE("Invalid frame count %d", frameCountInt);
+        return BAD_VALUE;
+    }
+    size_t frameCount = frameCountInt;
 
     ALOGV_IF(sharedBuffer != 0, "sharedBuffer: %p, size: %d", sharedBuffer->pointer(),
             sharedBuffer->size());
 
-    ALOGV("set() streamType %d frameCount %d flags %04x", streamType, frameCount, flags);
+    ALOGV("set() streamType %d frameCount %u flags %04x", streamType, frameCount, flags);
 
     AutoMutex lock(mLock);
     if (mAudioTrack != 0) {
@@ -336,7 +342,7 @@
     return mChannelCount;
 }
 
-uint32_t AudioTrack::frameCount() const
+size_t AudioTrack::frameCount() const
 {
     return mCblk->frameCount;
 }
@@ -730,7 +736,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        size_t frameCount,
         audio_output_flags_t flags,
         const sp<IMemory>& sharedBuffer,
         audio_io_handle_t output)
@@ -770,7 +776,7 @@
             // Same comment as below about ignoring frameCount parameter for set()
             frameCount = sharedBuffer->size();
         } else if (frameCount == 0) {
-            int afFrameCount;
+            size_t afFrameCount;
             if (AudioSystem::getFrameCount(output, streamType, &afFrameCount) != NO_ERROR) {
                 return NO_INIT;
             }
@@ -806,7 +812,7 @@
         if (AudioSystem::getSamplingRate(output, streamType, &afSampleRate) != NO_ERROR) {
             return NO_INIT;
         }
-        int afFrameCount;
+        size_t afFrameCount;
         if (AudioSystem::getFrameCount(output, streamType, &afFrameCount) != NO_ERROR) {
             return NO_INIT;
         }
@@ -815,8 +821,8 @@
         uint32_t minBufCount = afLatency / ((1000 * afFrameCount)/afSampleRate);
         if (minBufCount < 2) minBufCount = 2;
 
-        int minFrameCount = (afFrameCount*sampleRate*minBufCount)/afSampleRate;
-        ALOGV("minFrameCount: %d, afFrameCount=%d, minBufCount=%d, sampleRate=%u, afSampleRate=%u"
+        size_t minFrameCount = (afFrameCount*sampleRate*minBufCount)/afSampleRate;
+        ALOGV("minFrameCount: %u, afFrameCount=%d, minBufCount=%d, sampleRate=%u, afSampleRate=%u"
                 ", afLatency=%d",
                 minFrameCount, afFrameCount, minBufCount, sampleRate, afSampleRate, afLatency);
 
@@ -828,7 +834,7 @@
         }
         // Make sure that application is notified with sufficient margin
         // before underrun
-        if (mNotificationFramesAct > (uint32_t)frameCount/2) {
+        if (mNotificationFramesAct > frameCount/2) {
             mNotificationFramesAct = frameCount/2;
         }
         if (frameCount < minFrameCount) {
diff --git a/media/libmedia/IAudioFlinger.cpp b/media/libmedia/IAudioFlinger.cpp
index 0eeb6d9..79c3361 100644
--- a/media/libmedia/IAudioFlinger.cpp
+++ b/media/libmedia/IAudioFlinger.cpp
@@ -89,7 +89,7 @@
                                 uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 track_flags_t *flags,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_io_handle_t output,
@@ -143,7 +143,7 @@
                                 uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 track_flags_t flags,
                                 pid_t tid,
                                 int *sessionId,
@@ -527,7 +527,7 @@
         return status;
     }
 
-    virtual unsigned int getInputFramesLost(audio_io_handle_t ioHandle) const
+    virtual size_t getInputFramesLost(audio_io_handle_t ioHandle) const
     {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
@@ -703,7 +703,7 @@
         return reply.readInt32();
     }
 
-    virtual int32_t getPrimaryOutputFrameCount()
+    virtual size_t getPrimaryOutputFrameCount()
     {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
@@ -728,7 +728,7 @@
             uint32_t sampleRate = data.readInt32();
             audio_format_t format = (audio_format_t) data.readInt32();
             audio_channel_mask_t channelMask = data.readInt32();
-            size_t bufferCount = data.readInt32();
+            size_t frameCount = data.readInt32();
             track_flags_t flags = (track_flags_t) data.readInt32();
             sp<IMemory> buffer = interface_cast<IMemory>(data.readStrongBinder());
             audio_io_handle_t output = (audio_io_handle_t) data.readInt32();
@@ -737,7 +737,7 @@
             status_t status;
             sp<IAudioTrack> track = createTrack(pid,
                     (audio_stream_type_t) streamType, sampleRate, format,
-                    channelMask, bufferCount, &flags, buffer, output, tid, &sessionId, &status);
+                    channelMask, frameCount, &flags, buffer, output, tid, &sessionId, &status);
             reply->writeInt32(flags);
             reply->writeInt32(sessionId);
             reply->writeInt32(status);
@@ -751,13 +751,13 @@
             uint32_t sampleRate = data.readInt32();
             audio_format_t format = (audio_format_t) data.readInt32();
             audio_channel_mask_t channelMask = data.readInt32();
-            size_t bufferCount = data.readInt32();
+            size_t frameCount = data.readInt32();
             track_flags_t flags = (track_flags_t) data.readInt32();
             pid_t tid = (pid_t) data.readInt32();
             int sessionId = data.readInt32();
             status_t status;
             sp<IAudioRecord> record = openRecord(pid, input,
-                    sampleRate, format, channelMask, bufferCount, flags, tid, &sessionId, &status);
+                    sampleRate, format, channelMask, frameCount, flags, tid, &sessionId, &status);
             reply->writeInt32(sessionId);
             reply->writeInt32(status);
             reply->writeStrongBinder(record->asBinder());
@@ -972,8 +972,8 @@
         case GET_RENDER_POSITION: {
             CHECK_INTERFACE(IAudioFlinger, data, reply);
             audio_io_handle_t output = (audio_io_handle_t) data.readInt32();
-            uint32_t halFrames;
-            uint32_t dspFrames;
+            size_t halFrames;
+            size_t dspFrames;
             status_t status = getRenderPosition(&halFrames, &dspFrames, output);
             reply->writeInt32(status);
             if (status == NO_ERROR) {
diff --git a/media/libmedia/SoundPool.cpp b/media/libmedia/SoundPool.cpp
index b321e92..204e0ce 100644
--- a/media/libmedia/SoundPool.cpp
+++ b/media/libmedia/SoundPool.cpp
@@ -568,7 +568,7 @@
         }
 
         // initialize track
-        int afFrameCount;
+        size_t afFrameCount;
         uint32_t afSampleRate;
         audio_stream_type_t streamType = mSoundPool->streamType();
         if (AudioSystem::getOutputFrameCount(&afFrameCount, streamType) != NO_ERROR) {
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 769b322..c3e5c40 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -1388,7 +1388,7 @@
     ALOGV("open(%u, %d, 0x%x, %d, %d, %d)", sampleRate, channelCount, channelMask,
             format, bufferCount, mSessionId);
     uint32_t afSampleRate;
-    int afFrameCount;
+    size_t afFrameCount;
     uint32_t frameCount;
 
     if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
diff --git a/media/libstagefright/AudioSource.cpp b/media/libstagefright/AudioSource.cpp
index 861aebe..3cf4d5c 100644
--- a/media/libstagefright/AudioSource.cpp
+++ b/media/libstagefright/AudioSource.cpp
@@ -58,7 +58,7 @@
     ALOGV("sampleRate: %d, channelCount: %d", sampleRate, channelCount);
     CHECK(channelCount == 1 || channelCount == 2);
 
-    int minFrameCount;
+    size_t minFrameCount;
     status_t status = AudioRecord::getMinFrameCount(&minFrameCount,
                                            sampleRate,
                                            AUDIO_FORMAT_PCM_16_BIT,
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 5bb599b..384f268 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -450,7 +450,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        size_t frameCount,
         IAudioFlinger::track_flags_t *flags,
         const sp<IMemory>& sharedBuffer,
         audio_io_handle_t output,
@@ -1730,7 +1730,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        size_t frameCount,
         const sp<IMemory>& sharedBuffer,
         int sessionId,
         IAudioFlinger::track_flags_t *flags,
@@ -1799,7 +1799,7 @@
         if (minBufCount < 2) {
             minBufCount = 2;
         }
-        int minFrameCount = mNormalFrameCount * minBufCount;
+        size_t minFrameCount = mNormalFrameCount * minBufCount;
         if (frameCount < minFrameCount) {
             frameCount = minFrameCount;
         }
@@ -4097,7 +4097,7 @@
 {
     Mutex::Autolock _l(mLock);
     // FIXME explain this formula
-    int frameCount = (3 * mNormalFrameCount * mSampleRate) / thread->sampleRate();
+    size_t frameCount = (3 * mNormalFrameCount * mSampleRate) / thread->sampleRate();
     OutputTrack *outputTrack = new OutputTrack(thread,
                                             this,
                                             mSampleRate,
@@ -4185,7 +4185,7 @@
             uint32_t sampleRate,
             audio_format_t format,
             audio_channel_mask_t channelMask,
-            int frameCount,
+            size_t frameCount,
             const sp<IMemory>& sharedBuffer,
             int sessionId)
     :   RefBase(),
@@ -4348,7 +4348,7 @@
             uint32_t sampleRate,
             audio_format_t format,
             audio_channel_mask_t channelMask,
-            int frameCount,
+            size_t frameCount,
             const sp<IMemory>& sharedBuffer,
             int sessionId,
             IAudioFlinger::track_flags_t flags)
@@ -4892,7 +4892,7 @@
             uint32_t sampleRate,
             audio_format_t format,
             audio_channel_mask_t channelMask,
-            int frameCount,
+            size_t frameCount,
             const sp<IMemory>& sharedBuffer,
             int sessionId) {
     if (!client->reserveTimedTrack())
@@ -4910,7 +4910,7 @@
             uint32_t sampleRate,
             audio_format_t format,
             audio_channel_mask_t channelMask,
-            int frameCount,
+            size_t frameCount,
             const sp<IMemory>& sharedBuffer,
             int sessionId)
     : Track(thread, client, streamType, sampleRate, format, channelMask,
@@ -5405,7 +5405,7 @@
             uint32_t sampleRate,
             audio_format_t format,
             audio_channel_mask_t channelMask,
-            int frameCount,
+            size_t frameCount,
             int sessionId)
     :   TrackBase(thread, client, sampleRate, format,
                   channelMask, frameCount, 0 /*sharedBuffer*/, sessionId),
@@ -5524,7 +5524,7 @@
             uint32_t sampleRate,
             audio_format_t format,
             audio_channel_mask_t channelMask,
-            int frameCount)
+            size_t frameCount)
     :   Track(playbackThread, NULL, AUDIO_STREAM_CNT, sampleRate, format, channelMask, frameCount,
                 NULL, 0, IAudioFlinger::TRACK_DEFAULT),
     mActive(false), mSourceThread(sourceThread), mBuffers(NULL)
@@ -5918,7 +5918,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        size_t frameCount,
         IAudioFlinger::track_flags_t flags,
         pid_t tid,
         int *sessionId,
@@ -6295,7 +6295,7 @@
         uint32_t sampleRate,
         audio_format_t format,
         audio_channel_mask_t channelMask,
-        int frameCount,
+        size_t frameCount,
         int sessionId,
         IAudioFlinger::track_flags_t flags,
         pid_t tid,
@@ -6988,7 +6988,7 @@
     return thread != NULL ? thread->sampleRate() : 0;
 }
 
-int32_t AudioFlinger::getPrimaryOutputFrameCount()
+size_t AudioFlinger::getPrimaryOutputFrameCount()
 {
     Mutex::Autolock _l(mLock);
     PlaybackThread *thread = primaryPlaybackThread_l();
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 9ddfe28..830dfe9 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -92,7 +92,7 @@
                                 uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 IAudioFlinger::track_flags_t *flags,
                                 const sp<IMemory>& sharedBuffer,
                                 audio_io_handle_t output,
@@ -106,7 +106,7 @@
                                 uint32_t sampleRate,
                                 audio_format_t format,
                                 audio_channel_mask_t channelMask,
-                                int frameCount,
+                                size_t frameCount,
                                 IAudioFlinger::track_flags_t flags,
                                 pid_t tid,
                                 int *sessionId,
@@ -208,7 +208,7 @@
     virtual audio_module_handle_t loadHwModule(const char *name);
 
     virtual uint32_t getPrimaryOutputSamplingRate();
-    virtual int32_t getPrimaryOutputFrameCount();
+    virtual size_t getPrimaryOutputFrameCount();
 
     virtual     status_t    onTransact(
                                 uint32_t code,
@@ -390,7 +390,7 @@
                                         uint32_t sampleRate,
                                         audio_format_t format,
                                         audio_channel_mask_t channelMask,
-                                        int frameCount,
+                                        size_t frameCount,
                                         const sp<IMemory>& sharedBuffer,
                                         int sessionId);
             virtual             ~TrackBase();
@@ -790,7 +790,7 @@
                                         uint32_t sampleRate,
                                         audio_format_t format,
                                         audio_channel_mask_t channelMask,
-                                        int frameCount,
+                                        size_t frameCount,
                                         const sp<IMemory>& sharedBuffer,
                                         int sessionId,
                                         IAudioFlinger::track_flags_t flags);
@@ -922,7 +922,7 @@
                                          uint32_t sampleRate,
                                          audio_format_t format,
                                          audio_channel_mask_t channelMask,
-                                         int frameCount,
+                                         size_t frameCount,
                                          const sp<IMemory>& sharedBuffer,
                                          int sessionId);
             virtual ~TimedTrack();
@@ -965,7 +965,7 @@
                        uint32_t sampleRate,
                        audio_format_t format,
                        audio_channel_mask_t channelMask,
-                       int frameCount,
+                       size_t frameCount,
                        const sp<IMemory>& sharedBuffer,
                        int sessionId);
 
@@ -1014,7 +1014,7 @@
                                         uint32_t sampleRate,
                                         audio_format_t format,
                                         audio_channel_mask_t channelMask,
-                                        int frameCount);
+                                        size_t frameCount);
             virtual             ~OutputTrack();
 
             virtual status_t    start(AudioSystem::sync_event_t event =
@@ -1099,7 +1099,7 @@
                                     uint32_t sampleRate,
                                     audio_format_t format,
                                     audio_channel_mask_t channelMask,
-                                    int frameCount,
+                                    size_t frameCount,
                                     const sp<IMemory>& sharedBuffer,
                                     int sessionId,
                                     IAudioFlinger::track_flags_t *flags,
@@ -1463,7 +1463,7 @@
                                         uint32_t sampleRate,
                                         audio_format_t format,
                                         audio_channel_mask_t channelMask,
-                                        int frameCount,
+                                        size_t frameCount,
                                         int sessionId);
             virtual             ~RecordTrack();
 
@@ -1526,7 +1526,7 @@
                         uint32_t sampleRate,
                         audio_format_t format,
                         audio_channel_mask_t channelMask,
-                        int frameCount,
+                        size_t frameCount,
                         int sessionId,
                         IAudioFlinger::track_flags_t flags,
                         pid_t tid,