Return number of frames output from resample method

Change-Id: Ic297e2ed59839f1788c83e099ef1a9e4af29591f
diff --git a/services/audioflinger/AudioResamplerDyn.cpp b/services/audioflinger/AudioResamplerDyn.cpp
index c21d4ca..6481b85 100644
--- a/services/audioflinger/AudioResamplerDyn.cpp
+++ b/services/audioflinger/AudioResamplerDyn.cpp
@@ -477,15 +477,15 @@
 }
 
 template<typename TC, typename TI, typename TO>
-void AudioResamplerDyn<TC, TI, TO>::resample(int32_t* out, size_t outFrameCount,
+size_t AudioResamplerDyn<TC, TI, TO>::resample(int32_t* out, size_t outFrameCount,
             AudioBufferProvider* provider)
 {
-    (this->*mResampleFunc)(reinterpret_cast<TO*>(out), outFrameCount, provider);
+    return (this->*mResampleFunc)(reinterpret_cast<TO*>(out), outFrameCount, provider);
 }
 
 template<typename TC, typename TI, typename TO>
 template<int CHANNELS, bool LOCKED, int STRIDE>
-void AudioResamplerDyn<TC, TI, TO>::resample(TO* out, size_t outFrameCount,
+size_t AudioResamplerDyn<TC, TI, TO>::resample(TO* out, size_t outFrameCount,
         AudioBufferProvider* provider)
 {
     // TODO Mono -> Mono is not supported. OUTPUT_CHANNELS reflects minimum of stereo out.
@@ -610,6 +610,7 @@
     ALOG_ASSERT(mBuffer.frameCount == 0); // there must be no frames in the buffer
     mInBuffer.setImpulse(impulse);
     mPhaseFraction = phaseFraction;
+    return outputIndex / OUTPUT_CHANNELS;
 }
 
 /* instantiate templates used by AudioResampler::create */