diff --git a/media/libmedia/IAudioFlinger.cpp b/media/libmedia/IAudioFlinger.cpp
index acfaea0..86ff8bd 100644
--- a/media/libmedia/IAudioFlinger.cpp
+++ b/media/libmedia/IAudioFlinger.cpp
@@ -525,7 +525,7 @@
         return reply.readInt32();
     }
 
-    virtual status_t getRenderPosition(size_t *halFrames, size_t *dspFrames,
+    virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames,
             audio_io_handle_t output) const
     {
         Parcel data, reply;
@@ -546,7 +546,7 @@
         return status;
     }
 
-    virtual size_t getInputFramesLost(audio_io_handle_t ioHandle) const
+    virtual uint32_t getInputFramesLost(audio_io_handle_t ioHandle) const
     {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
@@ -1013,8 +1013,8 @@
         case GET_RENDER_POSITION: {
             CHECK_INTERFACE(IAudioFlinger, data, reply);
             audio_io_handle_t output = (audio_io_handle_t) data.readInt32();
-            size_t halFrames;
-            size_t dspFrames;
+            uint32_t halFrames;
+            uint32_t dspFrames;
             status_t status = getRenderPosition(&halFrames, &dspFrames, output);
             reply->writeInt32(status);
             if (status == NO_ERROR) {