From 3c3afdcecdd1fbd69a106fa9d9548a78eeef5c96 Mon Sep 17 00:00:00 2001
From: Steven Atkinson <steven@atkinson.mn>
Date: Fri, 5 Apr 2024 21:59:24 -0700
Subject: [PATCH 1/2] Put version in serialized state

---
 NeuralAmpModeler/NeuralAmpModeler.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/NeuralAmpModeler/NeuralAmpModeler.cpp b/NeuralAmpModeler/NeuralAmpModeler.cpp
index 13c141d4..fdf49984 100644
--- a/NeuralAmpModeler/NeuralAmpModeler.cpp
+++ b/NeuralAmpModeler/NeuralAmpModeler.cpp
@@ -391,6 +391,9 @@ void NeuralAmpModeler::OnIdle()
 
 bool NeuralAmpModeler::SerializeState(IByteChunk& chunk) const
 {
+  // Plugin version, so we can load legacy serialized states in the future!
+  WDL_String version(PLUG_VERSION_STR);
+  chunk.PutStr(version.Get());
   // Model directory (don't serialize the model itself; we'll just load it again
   // when we unserialize)
   chunk.PutStr(mNAMPath.Get());
@@ -400,7 +403,12 @@ bool NeuralAmpModeler::SerializeState(IByteChunk& chunk) const
 
 int NeuralAmpModeler::UnserializeState(const IByteChunk& chunk, int startPos)
 {
-  WDL_String dir;
+  WDL_String version;
+  startPos = chunk.GetStr(version, startPos);
+  // Version-specific loading here if needed.
+  // ...
+
+  // Current version loading:
   startPos = chunk.GetStr(mNAMPath, startPos);
   startPos = chunk.GetStr(mIRPath, startPos);
   int retcode = UnserializeParams(chunk, startPos);

From 08e8f7c0561f4516dca0bd4bcfb6a20cd4d2311e Mon Sep 17 00:00:00 2001
From: Steven Atkinson <steven@atkinson.mn>
Date: Fri, 5 Apr 2024 22:09:37 -0700
Subject: [PATCH 2/2] Add header to serialized state

---
 NeuralAmpModeler/NeuralAmpModeler.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/NeuralAmpModeler/NeuralAmpModeler.cpp b/NeuralAmpModeler/NeuralAmpModeler.cpp
index fdf49984..50facbb9 100644
--- a/NeuralAmpModeler/NeuralAmpModeler.cpp
+++ b/NeuralAmpModeler/NeuralAmpModeler.cpp
@@ -391,6 +391,9 @@ void NeuralAmpModeler::OnIdle()
 
 bool NeuralAmpModeler::SerializeState(IByteChunk& chunk) const
 {
+  // If this isn't here when unserializing, then we know we're dealing with something before v0.8.0.
+  WDL_String header("###NeuralAmpModeler###");  // Don't change this!
+  chunk.PutStr(header.Get());
   // Plugin version, so we can load legacy serialized states in the future!
   WDL_String version(PLUG_VERSION_STR);
   chunk.PutStr(version.Get());
@@ -403,6 +406,13 @@ bool NeuralAmpModeler::SerializeState(IByteChunk& chunk) const
 
 int NeuralAmpModeler::UnserializeState(const IByteChunk& chunk, int startPos)
 {
+  WDL_String header;
+  startPos = chunk.GetStr(header, startPos);
+  // TODO: Handle legacy plugin serialized states.
+  //if strncmp (header.Get(), "###NeuralAmpModeler###")
+  //{
+  //  return UnserializeStateLegacy(header, startPos);  // (We'll assume 0.7.9).
+  //}
   WDL_String version;
   startPos = chunk.GetStr(version, startPos);
   // Version-specific loading here if needed.