livoxGen1:PcloudStimProd: move qualeApi param parsing here

stimBuffApis/livoxGen1/pcloudStimulusProducer.cpp

@@ -106,6 +106,37 @@ void produceStimFrameAck(void)
 {
 }
 
+// Helper function to parse histbuffMs from device attachment spec
+static int parseHistbuffMs(
+	const std::shared_ptr<device::DeviceAttachmentSpec>& spec)
+{
+	int histbuffMs = 30000;  // Default: 30000ms (30 seconds)
+	const std::vector<std::string> histbuffParamNames = {
+		"history-buffer-duration-ms",
+		"hist-buff-duration-ms",
+		"histbuff-duration-ms",
+		"histbuff-ms"
+	};
+
+	// Loop through synonyms in reverse order; lattermost synonym wins.
+	for (auto synIt = histbuffParamNames.rbegin();
+		synIt != histbuffParamNames.rend(); ++synIt)
+	{
+		const auto& paramName = *synIt;
+		try {
+			histbuffMs = device::DeviceAttachmentSpec
+				::parseRequiredParamAsInt(
+					spec->qualeIfaceApiParams, paramName);
+			break; // Found and parsed successfully
+		} catch (const std::exception&) {
+			// Parameter not found or parse error, continue to next synonym
+			continue;
+		}
+	}
+
+	return histbuffMs;
+}
+
 std::shared_ptr<StimulusBuffer>
 PcloudStimulusProducer::getAttachedStimulusBuffer(
 	const std::shared_ptr<device::DeviceAttachmentSpec>& spec) const
@@ -142,8 +173,7 @@ PcloudStimulusProducer::getAttachedStimulusBuffer(
 
 std::shared_ptr<StimulusBuffer>
 PcloudStimulusProducer::getOrCreateAttachedStimulusBuffer(
-	const std::shared_ptr<device::DeviceAttachmentSpec>& deviceAttachmentSpec,
-	int histbuffMs
+	const std::shared_ptr<device::DeviceAttachmentSpec>& deviceAttachmentSpec
 	)
 {
 	// Check if buffer already exists (idempotent)
@@ -151,6 +181,9 @@ PcloudStimulusProducer::getOrCreateAttachedStimulusBuffer(
 	if (existingBuffer)
 		{ return existingBuffer; }
 
+	// Parse histbuffMs from device attachment spec
+	int histbuffMs = parseHistbuffMs(deviceAttachmentSpec);
+
 	// Parse qualeIfaceApi to determine buffer type
 	const std::string& qualeIfaceApi = deviceAttachmentSpec->qualeIfaceApi;