Add SpMcRingBuffer to base class StimulusBuffer

This will hopefully genericise the interface for Stimbuffs.

stimBuffApis/livoxGen1/pcloudStimulusBuffer.cpp

@@ -1,5 +1,8 @@
+#include <config.h>
 #include <opts.h>
 #include <algorithm>
+#include <unistd.h>
+#include <user/spMcRingBuffer.h>
 #include <componentThread.h>
 #include "pcloudStimulusBuffer.h"
 
@@ -11,7 +14,12 @@ PcloudStimulusBuffer::PcloudStimulusBuffer(
 	std::shared_ptr<livoxProto1::Device> &device,
 	const PcloudFormatDesc& formatDesc,
 	size_t nDgramsPerStagingBufferFrame)
-:	StimulusBuffer(deviceAttachmentSpec, device->componentThread->getIoService()),
+:	StimulusBuffer(
+		deviceAttachmentSpec,
+		static_cast<size_t>((1000 * 30) / CONFIG_STIMBUFF_FRAME_PERIOD_MS),
+		SpMcRingBuffer::InputEngineConstraints(
+			static_cast<size_t>(sysconf(_SC_PAGE_SIZE)), 4),
+		device->componentThread->getIoService()),
 deviceAttachmentSpec(deviceAttachmentSpec), device(device),
 formatDesc(formatDesc), stagingBuffer(
 	StagingBuffer::InputEngineConstraints::ioUringConstraints,