From eeaeeecf24cea63cbebf2d7d712ab8fd44045748 Mon Sep 17 00:00:00 2001
From: Mike Oliphant <oliphant@nostatic.org>
Date: Tue, 11 Nov 2025 07:23:47 -0800
Subject: [PATCH] Start new models bypassed. Prevent silentSamples from
 overflowing.

---
 src/nam_plugin.cpp | 17 ++++++++++++++---
 src/nam_plugin.h   |  3 ++-
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/nam_plugin.cpp b/src/nam_plugin.cpp
index 2dc2a8e..df825fb 100644
--- a/src/nam_plugin.cpp
+++ b/src/nam_plugin.cpp
@@ -187,8 +187,17 @@ namespace NAM {
 		nam->currentModelPath = msg->path;
 		assert(nam->currentModelPath.capacity() >= MAX_FILE_NAME + 1);
 
-		nam->silentSamples = 0;
-		nam->smartBypassed = false;
+		if (nam->currentModel != nullptr)
+		{
+			int receptiveFieldSize = nam->currentModel->GetReceptiveFieldSize();
+
+			if (receptiveFieldSize > -1)
+			{
+				// A newly loaded model is prewarmed to have a silent sample history
+				nam->silentSamples = receptiveFieldSize;
+				nam->smartBypassed = true;
+			}
+		}
 
 		// send reply
 		nam->schedule->schedule_work(nam->schedule->handle, sizeof(reply), &reply);
@@ -268,8 +277,10 @@ namespace NAM {
 					}
 				}
 
-				if (silentSamples > (uint32_t)receptiveFieldSamples)
+				if (silentSamples >= (uint32_t)receptiveFieldSamples)
 				{
+					silentSamples = (uint32_t)receptiveFieldSamples;	// Prevent silentSamples growing and eventually overflowing uint32
+
 					if (smartBypassed)
 					{
 						for (unsigned int i = 0; i < n_samples; i++)
diff --git a/src/nam_plugin.h b/src/nam_plugin.h
index 686b495..b47ab9e 100644
--- a/src/nam_plugin.h
+++ b/src/nam_plugin.h
@@ -80,6 +80,7 @@ namespace NAM {
 
 		bool initialize(double rate, const LV2_Feature* const* features) noexcept;
 		void set_max_buffer_size(int size) noexcept;
+		void activate() noexcept;
 		void process(uint32_t n_samples) noexcept;
 
 		void write_current_path();
@@ -122,6 +123,6 @@ namespace NAM {
 		int32_t maxBufferSize = 512;
 		float bypassThresholdLinear = 0;
 		uint32_t silentSamples = 0;
-		bool smartBypassed = false;
+		bool smartBypassed = true;
 	};
 }