diff --git a/libs/audioflinger/AudioHardwareInterface.cpp b/libs/audioflinger/AudioHardwareInterface.cpp
index 37be329..9a4a7f9 100644
--- a/libs/audioflinger/AudioHardwareInterface.cpp
+++ b/libs/audioflinger/AudioHardwareInterface.cpp
@@ -140,8 +140,8 @@
 // default implementation
 String8 AudioHardwareBase::getParameters(const String8& keys)
 {
-    String8 result = String8("");
-    return result;
+    AudioParameter param = AudioParameter(keys);
+    return param.toString();
 }
 
 // default implementation
diff --git a/libs/audioflinger/AudioHardwareStub.cpp b/libs/audioflinger/AudioHardwareStub.cpp
index 1a03059..ae391ee 100644
--- a/libs/audioflinger/AudioHardwareStub.cpp
+++ b/libs/audioflinger/AudioHardwareStub.cpp
@@ -152,6 +152,12 @@
     return NO_ERROR;
 }
 
+String8 AudioStreamOutStub::getParameters(const String8& keys)
+{
+    AudioParameter param = AudioParameter(keys);
+    return param.toString();
+}
+
 // ----------------------------------------------------------------------------
 
 status_t AudioStreamInStub::set(int *pFormat, uint32_t *pChannels, uint32_t *pRate,
@@ -187,6 +193,12 @@
     return NO_ERROR;
 }
 
+String8 AudioStreamInStub::getParameters(const String8& keys)
+{
+    AudioParameter param = AudioParameter(keys);
+    return param.toString();
+}
+
 // ----------------------------------------------------------------------------
 
 }; // namespace android
diff --git a/libs/audioflinger/AudioHardwareStub.h b/libs/audioflinger/AudioHardwareStub.h
index 8f43259..583f852 100644
--- a/libs/audioflinger/AudioHardwareStub.h
+++ b/libs/audioflinger/AudioHardwareStub.h
@@ -40,7 +40,7 @@
     virtual status_t    standby();
     virtual status_t    dump(int fd, const Vector<String16>& args);
     virtual status_t    setParameters(const String8& keyValuePairs) { return NO_ERROR;}
-    virtual String8     getParameters(const String8& keys) {String8 result = String8(""); return result;}
+    virtual String8     getParameters(const String8& keys);
 };
 
 class AudioStreamInStub : public AudioStreamIn {
@@ -55,7 +55,7 @@
     virtual status_t    dump(int fd, const Vector<String16>& args);
     virtual status_t    standby() { return NO_ERROR; }
     virtual status_t    setParameters(const String8& keyValuePairs) { return NO_ERROR;}
-    virtual String8     getParameters(const String8& keys) {String8 result = String8(""); return result;}
+    virtual String8     getParameters(const String8& keys);
 };
 
 class AudioHardwareStub : public  AudioHardwareBase