From b80587fd1bb24603a585e210a74224779847709d Mon Sep 17 00:00:00 2001
From: Ichthyostega <prg@ichthyostega.de>
Date: Thu, 3 Sep 2026 00:18:46 +0200
Subject: [PATCH] Parameters: setup bit-layout for ID-Record

---
 src/lib/par/spec.hpp | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/lib/par/spec.hpp b/src/lib/par/spec.hpp
index 3975e08c3..8ff21898d 100644
--- a/src/lib/par/spec.hpp
+++ b/src/lib/par/spec.hpp
@@ -63,9 +63,30 @@ namespace par {
   using BaseTypeID = meta::TypeIdxID<T, BaseTypes::List>;
   
   
+  
+  /* ===== setup of ID space ===== */
+  
+  namespace {
+    auto _bit_fit = [](uint bits){ return (1u << bits) - 1; };
+  }
+  
+  static constexpr uint _BASE_TYPE_BITS = 4;
+  static constexpr uint    _SCALES_BITS = 10;
+  static constexpr uint  _PARAM_ID_BITS = 18;
+  
+  static constexpr uint MAX_BASETYPES = _bit_fit(_BASE_TYPE_BITS); ///< max number of parameter base types that can be configured
+  static constexpr uint MAX_SCALES    = _bit_fit(_SCALES_BITS);    ///< max number of distinct scales that can be defined at runtime
+  static constexpr uint MAX_PARAM_ID  = _bit_fit(_PARAM_ID_BITS);  ///< max number of distinct param identities that can be created
+  
+  static_assert (BASETYPE_CNT <= MAX_BASETYPES);
+  
+  
+  
   struct IDRecord
     {
-      
+      uint baseTypeID :_BASE_TYPE_BITS  = 0;
+      uint scaleID    :_SCALES_BITS     = 0;
+      uint paramIDID  :_PARAM_ID_BITS   = 0;
     };