diff --git a/include/user/stimulusBuffer.h b/include/user/stimulusBuffer.h
index b7e2f97..c0a00ef 100644
--- a/include/user/stimulusBuffer.h
+++ b/include/user/stimulusBuffer.h
@@ -23,6 +23,20 @@ namespace stim_buff {
  */
 class StimulusBuffer
 {
+public:
+	class PcloudFormatDesc
+	{
+	public:
+		enum class Format
+		{
+			XYZ,
+			XYZI,
+		};
+
+	public:
+		Format format;
+	};
+
 public:
 	explicit StimulusBuffer();
 	~StimulusBuffer();
diff --git a/stimBuffApis/livoxGen1/pcloudStimulusBuffer.h b/stimBuffApis/livoxGen1/pcloudStimulusBuffer.h
index 6fe7cf5..fff1741 100644
--- a/stimBuffApis/livoxGen1/pcloudStimulusBuffer.h
+++ b/stimBuffApis/livoxGen1/pcloudStimulusBuffer.h
@@ -19,7 +19,7 @@ class PcloudStimulusBuffer
 :	public StimulusBuffer
 {
 public:
-	explicit PcloudStimulusBuffer();
+	explicit PcloudStimulusBuffer(const PcloudFormatDesc& formatDesc);
 	~PcloudStimulusBuffer();
 
 	// Non-copyable, movable
@@ -27,6 +27,9 @@ public:
 	PcloudStimulusBuffer& operator=(const PcloudStimulusBuffer&) = delete;
 	PcloudStimulusBuffer(PcloudStimulusBuffer&&) = default;
 	PcloudStimulusBuffer& operator=(PcloudStimulusBuffer&&) = default;
+
+private:
+	PcloudFormatDesc formatDesc;
 };
 
 } // namespace stim_buff