From c31839ef93cf0832e9ab4b949df543e249b659c2 Mon Sep 17 00:00:00 2001
From: Chris Cannam <cannam@all-day-breakfast.com>
Date: Tue, 7 Jun 2022 09:06:52 +0100
Subject: [PATCH] Use fixed (faster) resampler settings in offline mode

---
 src/finer/R3StretcherImpl.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/finer/R3StretcherImpl.cpp b/src/finer/R3StretcherImpl.cpp
index 9783b43..0d42995 100644
--- a/src/finer/R3StretcherImpl.cpp
+++ b/src/finer/R3StretcherImpl.cpp
@@ -82,8 +82,16 @@ R3StretcherImpl::R3StretcherImpl(Parameters parameters,
 
     Resampler::Parameters resamplerParameters;
     resamplerParameters.quality = Resampler::FastestTolerable;
-    resamplerParameters.dynamism = Resampler::RatioOftenChanging;
-    resamplerParameters.ratioChange = Resampler::SmoothRatioChange;
+
+    if (m_parameters.options & RubberBandStretcher::OptionProcessRealTime) {
+        resamplerParameters.dynamism = Resampler::RatioOftenChanging;
+        resamplerParameters.ratioChange = Resampler::SmoothRatioChange;
+    } else {
+        // ratio can't be changed in offline mode
+        resamplerParameters.dynamism = Resampler::RatioMostlyFixed;
+        resamplerParameters.ratioChange = Resampler::SuddenRatioChange;
+    }
+        
     resamplerParameters.initialSampleRate = m_parameters.sampleRate;
     resamplerParameters.maxBufferSize = m_guideConfiguration.longestFftSize; //!!!???
     m_resampler = std::unique_ptr<Resampler>