OboeTester: show framesPerCallback
diff --git a/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.cpp b/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.cpp
index fa9f175..17ea8f5 100644
--- a/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.cpp
+++ b/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.cpp
@@ -47,6 +47,8 @@
         void *audioData,
         int numFrames) {
     mCallbackCount++;
+    mFramesPerCallback = numFrames;
+
     if (mCallbackReturnStop) {
         return oboe::DataCallbackResult::Stop;
     }