diff --git a/services/oboeservice/AAudioServiceEndpointMMAP.cpp b/services/oboeservice/AAudioServiceEndpointMMAP.cpp
index 133b9b4..e03fba0 100644
--- a/services/oboeservice/AAudioServiceEndpointMMAP.cpp
+++ b/services/oboeservice/AAudioServiceEndpointMMAP.cpp
@@ -227,6 +227,9 @@
 
     setFormat(config.format);
     setSampleRate(config.sample_rate);
+    setHardwareSampleRate(getSampleRate());
+    setHardwareFormat(getFormat());
+    setHardwareSamplesPerFrame(AAudioConvert_channelMaskToCount(getChannelMask()));
 
     // If the position is not updated while the timestamp is updated for more than a certain amount,
     // the timestamp reported from the HAL may not be accurate. Here, a timestamp grace period is