P1.5: embed live level-tracker A[] + mask scalars into C++ (dsp/leveltrack_data.hpp); leveltrack_check sanity confirms SR=48000, A_ATTACK plateaus 0.692, attack/release=1.0

2026-08-20 01:12:12 +03:00
parent 0e90918226
commit a49e35dc25
3 changed files with 213 additions and 0 deletions
@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+"""Emit dsp/leveltrack_data.hpp: live level-tracker A[] + mask scalars from
+handoff/rtctx_live.json (P1.5 realtime capture, render_long.rpp preset).
+"""
+import json, os
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+SRC = os.path.join(HERE, 'rtctx_live.json')
+OUT = os.path.join(HERE, '..', 'dsp', 'leveltrack_data.hpp')
+
+d = json.load(open(SRC))
+
+A_attack = d['A_4c0528']   # attack smoothing (fast), 341 double
+A_release = d['A_3c0510']  # release smoothing (slow), 341 double
+scalars = d['scalars']     # hex-offset -> float
+
+
+def fmt_doubles(a):
+    return ", ".join("%.17g" % v for v in a)
+
+
+lines = []
+lines.append("// AUTOGENERATED from P1.5 realtime capture handoff/rtctx_live.json")
+lines.append("// (render_long.rpp: attack=0 release=0 selectivity=10 sharpness=10 depth=0.864).")
+lines.append("// Regenerate with handoff/emit_leveltrack.py. Do not edit by hand.")
+lines.append("#pragma once")
+lines.append("#include <cstddef>")
+lines.append("")
+lines.append("namespace ltk {")
+lines.append("")
+lines.append("// ctx = 0x2370040, marker +0x24 == 48000.0f (internal SR).")
+lines.append("constexpr float CTX_INTERNAL_SR = 48000.0f;")
+lines.append("")
+lines.append("// mask scalars (float) captured live:")
+for off, val in scalars.items():
+    lines.append(f"constexpr float SCALAR{off.upper()} = {val}f;")
+lines.append("")
+lines.append(f"constexpr size_t LEVEL_NBINS = {len(A_attack)};")
+lines.append("")
+lines.append("// per-bin level-tracker IIR attack coefficients (0x4c0528):")
+lines.append(f"const double A_ATTACK[{len(A_attack)}] = {{")
+for i in range(0, len(A_attack), 6):
+    lines.append("  " + ", ".join("%.17g" % v for v in A_attack[i:i+6]) + ",")
+lines.append("};")
+lines.append("")
+lines.append("// per-bin level-tracker IIR release coefficients (0x3c0510 == 0x2c04f8):")
+lines.append(f"const double A_RELEASE[{len(A_release)}] = {{")
+for i in range(0, len(A_release), 6):
+    lines.append("  " + ", ".join("%.17g" % v for v in A_release[i:i+6]) + ",")
+lines.append("};")
+lines.append("")
+lines.append("}  // namespace ltk")
+
+open(OUT, 'w').write("\n".join(lines) + "\n")
+print(f"wrote {OUT}: attack={len(A_attack)} release={len(A_release)} scalars={len(scalars)}")