From 6a9e9a8f44ca5b9996acd239ddb16ee4f00f00d5 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Thu, 21 Nov 2013 16:10:21 +0000
Subject: intensity segmenter level redistribution

---
 rotord/src/nodes_audio_analysis.cpp | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'rotord/src/nodes_audio_analysis.cpp')

diff --git a/rotord/src/nodes_audio_analysis.cpp b/rotord/src/nodes_audio_analysis.cpp
index 6ec1188..ad6f5ad 100644
--- a/rotord/src/nodes_audio_analysis.cpp
+++ b/rotord/src/nodes_audio_analysis.cpp
@@ -178,9 +178,29 @@ namespace Rotor{
 		}
 		//sort and convert to features
 		std::sort(totals.begin(),totals.end(),sortsegments);
+		vector<float> bucketoffsets;
+		for (auto t:totals) bucketoffsets.push_back(0.0f);
+		if (parameters["levels"]->value>0.0f&&parameters["levels"]->value<totals.size()){
+			//use bucketoffsets to redistribute into smaller number of buckets
+			int numbertoredistribute=totals.size()-((int)parameters["levels"]->value);
+			int numberperbin=ceil((float)numbertoredistribute/totals.size());
+			int added=0;
+			for (int j=0;j<numbertoredistribute-numberperbin;j+=numberperbin){
+				int numbertoadd=min(numbertoredistribute-added,numberperbin);
+				bucketoffsets[j]=numbertoadd;
+				added+=numbertoadd;
+			}
+			if (numbertoredistribute>0) {
+				cerr<<"reducing number of levels by "<<numbertoredistribute<<", offsets:"<<endl;
+				for (auto o:bucketoffsets) {
+					cerr<<o<<":";
+				}
+				cerr<<endl;
+			}
+		}
 		for (i=0;i<totals.size();i++){
 			vampHost::feature f;
-			f.values.push_back((float)i);
+			f.values.push_back((float)i+bucketoffsets[i]);
 			features[times[totals[i].first]]=f;
 		}			
 	}
-- 
cgit v1.2.3