diff --git a/media/libmedia/AudioTrack.cpp b/media/libmedia/AudioTrack.cpp
index 8c33f41..233cf75 100644
--- a/media/libmedia/AudioTrack.cpp
+++ b/media/libmedia/AudioTrack.cpp
@@ -506,7 +506,7 @@
     return NO_ERROR;
 }
 
-void AudioTrack::getVolume(float* left, float* right)
+void AudioTrack::getVolume(float* left, float* right) const
 {
     if (left != NULL) {
         *left  = mVolume[LEFT];
@@ -531,7 +531,7 @@
     return NO_ERROR;
 }
 
-void AudioTrack::getAuxEffectSendLevel(float* level)
+void AudioTrack::getAuxEffectSendLevel(float* level) const
 {
     if (level != NULL) {
         *level  = mSendLevel;
@@ -553,7 +553,7 @@
     return NO_ERROR;
 }
 
-uint32_t AudioTrack::getSampleRate()
+uint32_t AudioTrack::getSampleRate() const
 {
     AutoMutex lock(mLock);
     return mCblk->sampleRate;
@@ -601,7 +601,7 @@
     return NO_ERROR;
 }
 
-status_t AudioTrack::getLoop(uint32_t *loopStart, uint32_t *loopEnd, int *loopCount)
+status_t AudioTrack::getLoop(uint32_t *loopStart, uint32_t *loopEnd, int *loopCount) const
 {
     AutoMutex lock(mLock);
     if (loopStart != NULL) {
@@ -631,7 +631,7 @@
     return NO_ERROR;
 }
 
-status_t AudioTrack::getMarkerPosition(uint32_t *marker)
+status_t AudioTrack::getMarkerPosition(uint32_t *marker) const
 {
     if (marker == NULL) return BAD_VALUE;
 
@@ -652,7 +652,7 @@
     return NO_ERROR;
 }
 
-status_t AudioTrack::getPositionUpdatePeriod(uint32_t *updatePeriod)
+status_t AudioTrack::getPositionUpdatePeriod(uint32_t *updatePeriod) const
 {
     if (updatePeriod == NULL) return BAD_VALUE;
 
@@ -712,7 +712,7 @@
             mCblk->sampleRate, mFormat, mChannelMask, (audio_policy_output_flags_t)mFlags);
 }
 
-int AudioTrack::getSessionId()
+int AudioTrack::getSessionId() const
 {
     return mSessionId;
 }