LivoxGen1: StagingBuff: Update iface

stimBuffApis/livoxGen1/stagingBuffer.h

@@ -22,7 +22,30 @@ namespace stim_buff {
 class StagingBuffer
 {
 public:
-	explicit StagingBuffer();
+	class InputEngineConstraints
+	{
+	public:
+		InputEngineConstraints();
+		~InputEngineConstraints();
+	};
+
+	class OutputEngineConstraints
+	{
+	public:
+		OutputEngineConstraints();
+		~OutputEngineConstraints();
+	};
+
+public:
+	/**	EXPLANATION:
+	 * We use the input and output engine constraints to determine the total
+	 * amount of memory required internally to assemble a single frame with
+	 * the given number of points per frame.
+	 */
+	explicit StagingBuffer(
+		const InputEngineConstraints& inputEngineConstraints,
+		const OutputEngineConstraints& outputEngineConstraints,
+		size_t nPointsPerFrame);
 	~StagingBuffer();
 
 	// Non-copyable, movable
@@ -31,6 +54,10 @@ public:
 	StagingBuffer(StagingBuffer&&) = default;
 	StagingBuffer& operator=(StagingBuffer&&) = default;
 
+public:
+	// operator IoUringQueueDescriptor() const;
+	// operator OpenClSharedBufferDescriptor() const;
+
 	bool isAssembling() const { return isAssembling_; }
 	void startAssembly();
 	void stopAssembly();