stagingBuffer: rename nDgramsPerFrame=>nSlots

include/user/stagingBuffer.h

@@ -73,7 +73,7 @@ public:
 	explicit StagingBuffer(
 		const IOEngineConstraints& inputEngineConstraints,
 		const IOEngineConstraints& outputEngineConstraints,
-		size_t nDgramsPerFrame);
+		size_t nSlots);
 	~StagingBuffer() = default;
 
 	// Non-copyable, movable
@@ -123,7 +123,7 @@ public:
 	{
 		std::ostringstream oss;
 		oss << "StagingBuffer{"
-			<< "nDgramsPerFrame=" << nDgramsPerFrame
+			<< "nSlots=" << nSlots
 			<< ", bufferNBytes=" << bufferNBytes
 			<< ", slotStrideNBytes=" << slotStrideNBytes
 			<< ", constraints=" << inputConstraints.stringify()
@@ -136,7 +136,7 @@ private:
 	static size_t calculateFirstSlotOffsetAndValidate(
 		uint8_t* buffer,
 		size_t bufferNBytes,
-		size_t nDgramsPerFrame,
+		size_t nSlots,
 		size_t slotStrideNBytes,
 		const IOEngineConstraints& inputConstraints);
 
@@ -163,7 +163,7 @@ private:
 	size_t bufferNBytes;
 
 	// Layout/invariants
-	size_t nDgramsPerFrame;
+	size_t nSlots;
 
 public:
 	size_t slotStrideNBytes;