diff --git a/services/audioflinger/PropertyUtils.h b/services/audioflinger/PropertyUtils.h
index 3bb6fa2..fbf651a 100644
--- a/services/audioflinger/PropertyUtils.h
+++ b/services/audioflinger/PropertyUtils.h
@@ -25,4 +25,8 @@
         media::audio::common::AudioMMapPolicyType policyType,
         std::vector<media::audio::common::AudioMMapPolicyInfo> *policyInfos);
 
+int32_t getAAudioMixerBurstCountFromSystemProperty();
+
+int32_t getAAudioHardwareBurstMinUsecFromSystemProperty();
+
 } // namespace android