add nodes, fft acf 1d

backend/nodes/ibw_note.py

@@ -0,0 +1,78 @@
+from __future__ import annotations
+
+import re
+
+from backend.node_registry import register_node
+from backend.data_types import MeasureTable
+from backend.nodes.helpers import _resolve_path, _import_ibw_loader
+
+
+def _parse_ibw_note(note_bytes: bytes) -> list[dict]:
+    try:
+        text = note_bytes.decode("utf-8", errors="replace")
+    except Exception:
+        return []
+
+    rows = []
+    for line in text.splitlines():
+        line = line.strip()
+        if not line:
+            continue
+        match = re.match(r'^([^:=]+)[=:](.+)$', line)
+        if not match:
+            continue
+        key = match.group(1).strip()
+        raw_val = match.group(2).strip()
+        if not key:
+            continue
+        try:
+            value = float(raw_val)
+        except (ValueError, TypeError):
+            continue
+        rows.append({"quantity": key, "value": value, "unit": ""})
+
+    return rows
+
+
+@register_node(display_name="IBW Note")
+class IBWNote:
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "filename": ("FILE_PICKER", {"default": "", "hide_when_input_connected": "path"}),
+            },
+            "optional": {
+                "path": ("FILE_PATH", {"label": "path"}),
+            },
+        }
+
+    OUTPUTS = (
+        ('MEASURE_TABLE', 'note'),
+    )
+    FUNCTION = "load"
+
+    DESCRIPTION = (
+        "Read the Note metadata from an .ibw file and display numeric entries "
+        "as a measurement table. Non-numeric note entries are skipped."
+    )
+
+    def load(self, filename: str = "", path: str | None = None) -> tuple:
+        selected = str(path).strip() if path is not None else str(filename).strip()
+        if not selected:
+            raise ValueError("No file selected.")
+        path_obj = _resolve_path(selected)
+        if not path_obj.exists():
+            raise FileNotFoundError(f"File not found: {path_obj}")
+        if path_obj.suffix.lower() != ".ibw":
+            raise ValueError(f"Expected an .ibw file, got: {path_obj.suffix}")
+
+        load_ibw = _import_ibw_loader()
+        wave = load_ibw(str(path_obj))
+        note_bytes = wave["wave"].get("note", b"") or b""
+
+        rows = _parse_ibw_note(note_bytes)
+        if not rows:
+            raise ValueError("No numeric metadata found in the .ibw note.")
+
+        return (MeasureTable(rows),)