PcloudAmbienceStimBuff: Parse postrinThreshold as percentage

stimBuffApis/livoxGen1/pcloudAmbienceStimulusBuffer.h

@@ -40,36 +40,21 @@ public:
 			callbacks, flags),
 	nStencils(nStencils_)
 	{
-		// Parse postrinInterestThreshold from qualeIfaceApiParams
+		// Parse postrinInterestPercentage (interpreted as percentage 0-100)
 		const std::vector<std::string> postrinInterestThresholdParamNames = {
 			"postrin-interest-threshold",
 			"postrin-interest"
 		};
 
-		/**	EXPLANATION:
-		 * The default postrin threshold is determined as follows:
-		 * We want 90% of the scanned points to have intensity under the
-		 * lowVal to consider the ambience criterion met.
-		 *
-		 * If nDgramsPerFrame_ (the number of datagrams per frame) is less
-		 * than 10, we require that all frames (100%) be under the lowVal.
-		 * This is because, for such small sample sizes, calculating 90%
-		 * does not yield a meaningful integer; for example, 90% of 7 is
-		 * 6.3, but we must count whole frames that meet the threshold. By
-		 * using nDgramsPerFrame_ as the threshold in this case, we ensure
-		 * logical, all-or-nothing evaluation at low sample counts while
-		 * maintaining an approximate 90% requirement for larger frame
-		 * sizes.
-		 */
-		uint32_t defaultPostrinThreshold = (nDgramsPerFrame_ < 10)
-			? static_cast<uint32_t>(nDgramsPerFrame_)
-			: static_cast<uint32_t>(nDgramsPerFrame_ * 9 / 10);
-
-		postrinInterestThreshold = static_cast<uint32_t>(
+		postrinInterestPercentage = static_cast<uint32_t>(
 			device::DeviceAttachmentSpec::parseOptionalParamAsIntWithSynonyms(
 				deviceAttachmentSpec->qualeIfaceApiParams,
 				postrinInterestThresholdParamNames,
-				defaultPostrinThreshold));
+				90));
+
+		// Convert percentage to absolute frame count
+		postrinInterestThreshold = static_cast<uint32_t>(
+			(nDgramsPerFrame_ * postrinInterestPercentage) / 100);
 		// Parse ambienceIntensityLowVal from qualeIfaceApiParams
 		const std::vector<std::string> ambienceIntensityLowValParamNames = {
 			"ambience-intensity-low-val"
@@ -94,6 +79,7 @@ public:
 	PcloudAmbienceStimulusBuffer& operator=(PcloudAmbienceStimulusBuffer&&) = default;
 
 public:
+	uint32_t postrinInterestPercentage;
 	uint32_t postrinInterestThreshold;
 	uint32_t ambienceIntensityLowVal;
 	size_t nStencils;