VST FX integration: plugin picker theo category + GUI embed fill viewport (FX Rack & Mastering)

app/core/vst_engine.py

@@ -1,6 +1,7 @@
 # SonicForge Studio VST / VSTi Engine Service
 import os
 import json
+import re
 import numpy as np
 import functools
 import threading
@@ -271,6 +272,21 @@ def release_soundfont(path: str):
     else:
         _FLUID_CACHE[path] = (fl, ref - 1)
 
+def _classify_fx_category(name, path=""):
+    """Heuristic phân loại VST FX cho Plugin Picker (spec vst_fx_panel_integration).
+    C++ scan có subCategoriesString (VD 'Fx|EQ') nhưng không emit ra JSON; dùng
+    tên plugin để xếp category. Chỉ ảnh hưởng UI grouping, không ảnh hưởng audio."""
+    s = (" " + name + " " + path).lower()
+    if any(k in s for k in ("eq", "equalizer", "filter", "graphic", "parametric")) or re.search(r"(^|[^a-z0-9])q([0-9]|[^a-z]|$)", s):
+        return "equalizer"
+    if any(k in s for k in ("reverb", "delay", "echo", "chorus", "hall", "space")):
+        return "reverb_delay"
+    if any(k in s for k in ("comp", "limiter", "maximizer", "gate", "leveler", "de-ess")):
+        return "comp_limiter"
+    if any(k in s for k in ("distortion", "drive", "satur", "overdrive", "fuzz", "amp")):
+        return "distortion"
+    return "utility"
+
 class PluginManager:
     def __init__(self, vst_dir=None, sf_dir=None, upload_sf_dir=None, extra_vst_dirs=None):
         from app.config import settings as _st
@@ -491,7 +507,8 @@ class PluginManager:
                         continue
                     name = p.get("name") or os.path.splitext(os.path.basename(path))[0]
                     results.append({"id": name, "name": name, "path": path,
-                                    "type": p.get("type", "VST3")})
+                                    "type": p.get("type", "VST3"),
+                                    "category": _classify_fx_category(name, path)})
         seen, uniq = set(), []
         for fx in results:
             if fx["path"] in seen: