From f31aeb04a608adaca4d64a9ba1adb4462d02b6a1 Mon Sep 17 00:00:00 2001
From: Jacob McGrath <113722146+passyur@users.noreply.github.com>
Date: Sun, 7 Jun 2026 23:06:55 -0500
Subject: [PATCH 1/2] lass: lazily alloc `scoreMultiTrack`

inits `scoreMultiTrack` to `nullptr`, checks if `nullptr` in `checkScoreMultiTrackLength()`
---
 LASS/src/Score.cpp | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/LASS/src/Score.cpp b/LASS/src/Score.cpp
index 9b6f3fe3..4508036e 100644
--- a/LASS/src/Score.cpp
+++ b/LASS/src/Score.cpp
@@ -158,12 +158,9 @@ Score::Score(int _numThreads, int _numChannels, int _samplingRate )
     numChannels(_numChannels),
     samplingRate(_samplingRate)
 {
-  scoreEndTime = 1; //start with a small number
-  scoreMultiTrackLength = scoreEndTime;
-  m_sample_count_type newNumSamples =
-        (m_sample_count_type) (scoreMultiTrackLength * float(samplingRate));
-  scoreMultiTrack = new MultiTrack
-        (numChannels,newNumSamples,samplingRate);
+  scoreEndTime = 0;
+  scoreMultiTrackLength = 0;
+  scoreMultiTrack = nullptr;
 
 
   reverbObj = NULL;
@@ -282,16 +279,19 @@ void Score::checkScoreMultiTrackLength(){
       scoreMultiTrackLength = scoreEndTime;
       m_sample_count_type newNumSamples =
         (m_sample_count_type) (scoreMultiTrackLength * float(samplingRate));
-      MultiTrack* newScoreMultiTrack = new MultiTrack
-        (numChannels,newNumSamples,samplingRate);
-
-      newScoreMultiTrack->composite(*scoreMultiTrack, 0);
-      delete scoreMultiTrack;
-      scoreMultiTrack = newScoreMultiTrack;
 
-      //pthread_mutex_unlock( &mutexVectorRenderedSound );
-      cout<<"Get a longer score with length = " << scoreEndTime << " seconds."<<endl;
+      if (scoreMultiTrack == nullptr) {
+        // First allocation: size it correctly up front, no copy needed.
+        scoreMultiTrack = new MultiTrack(numChannels, newNumSamples, samplingRate);
+      } else {
+        // Buffer already exists but needs to grow — copy existing data then replace.
+        MultiTrack* newScoreMultiTrack = new MultiTrack(numChannels, newNumSamples, samplingRate);
+        newScoreMultiTrack->composite(*scoreMultiTrack, 0);
+        delete scoreMultiTrack;
+        scoreMultiTrack = newScoreMultiTrack;
+      }
 
+      cout<<"Score buffer sized to " << scoreEndTime << " seconds."<<endl;
   }
 }
 

From 8a2de18abc883d141b199d2d1b72dafe28408548 Mon Sep 17 00:00:00 2001
From: Jacob McGrath <113722146+passyur@users.noreply.github.com>
Date: Sun, 7 Jun 2026 23:17:15 -0500
Subject: [PATCH 2/2] lass: in-place reverb

---
 LASS/src/Score.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/LASS/src/Score.cpp b/LASS/src/Score.cpp
index 4508036e..6128d25b 100644
--- a/LASS/src/Score.cpp
+++ b/LASS/src/Score.cpp
@@ -258,9 +258,12 @@ MultiTrack* Score::joinThreadsAndMix(){
   if(reverbObj != NULL)
   {
     cout << "Applying reverb to the score..." << endl;
-    MultiTrack *tmp = & reverbObj->do_reverb_MultiTrack(*scoreMultiTrack);
-    delete scoreMultiTrack;
-    scoreMultiTrack = tmp;
+    // Process one track at a time so peak RSS is 1× score + 1 track,
+    // not 2× score as do_reverb_MultiTrack would require.
+    for (int i = 0; i < scoreMultiTrack->size(); i++) {
+      Track& newTrack = reverbObj->do_reverb_Track(*scoreMultiTrack->get(i));
+      delete scoreMultiTrack->set(i, &newTrack);
+    }
   }
 
   // perform Clipping management on the composite: