From 74eadfce99b12e5ebded3529efe78f71e5970713 Mon Sep 17 00:00:00 2001
From: Sam Lavigne <splavigne@gmail.com>
Date: Thu, 17 Aug 2023 23:53:26 -0400
Subject: [PATCH] ok

---
 parse_filters.py | 114 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 parse_filters.py

diff --git a/parse_filters.py b/parse_filters.py
new file mode 100644
index 0000000..0a088f1
--- /dev/null
+++ b/parse_filters.py
@@ -0,0 +1,114 @@
+import json
+import re
+from subprocess import run
+
+def get_names():
+    filters = []
+
+    with open("./filternames.txt", "r") as infile:
+        input = infile.readlines()
+        input = [l.strip() for l in input]
+
+    for index, l in enumerate(input):
+        parts = re.split(r" +", l)
+        filter_meta = parts[0]
+        filter_name = parts[1]
+        filter_type = parts[3]
+        description = " ".join(parts[3:])
+
+        item = {
+            "id": index,
+            "meta": filter_meta,
+            "name": filter_name,
+            "type": filter_type,
+            "description": description,
+        }
+        filters.append(item)
+
+    return filters
+
+
+def get_params(f):
+    help_text = run(
+        ["ffmpeg", "-hide_banner", "-h", f"filter={f['name']}"],
+        text=True,
+        capture_output=True,
+    )
+    text = help_text.stdout
+    try:
+        text = text.split("AVOptions:")[1]
+    except Exception as e:
+        return f
+    lines = text.split("\n")
+    params = []
+    for l in lines:
+        if not l.startswith("   "):
+            continue
+        issub = l.startswith("     ")
+        parts = re.split(r" +", l)[1:]
+        if not issub:
+            item = {
+                "name": parts[0],
+                "type": re.sub("[<>]", "", parts[1]),
+                "desc": " ".join(parts[3:]),
+                "min": None,
+                "max": None,
+                "default": None,
+            }
+
+            search = re.search(r"\(from (.*?) to (.*?)\)", item["desc"])
+            if search:
+                item["min"] = search.group(1)
+                item["max"] = search.group(2)
+
+            search = re.search(r"\(default (.*?)\)", item["desc"])
+            if search:
+                item["default"] = search.group(1)
+
+            params.append(item)
+
+            if item.get("max", 0) in ["INT_MAX", "FLT_MAX", "DBL_MAX", "I64_MAX"]:
+                item["max"] = 2147483647
+
+            if item.get("min", 0) in ["INT_MIN", "FLT_MIN", "DBL_MIN", "-DBL_MAX", "I64_MIN", "-FLT_MAX"]:
+                item["min"] = -2147483648
+
+            if item.get("default", 0) in ["INT_MAX", "FLT_MAX", "DBL_MAX", "I64_MAX"]:
+                item["default"] = 2147483647
+
+            if item.get("default", 0) in ["INT_MIN", "FLT_MIN", "DBL_MIN", "-DBL_MAX", "I64_MAX"]:
+                item["default"] = -2147483648
+
+            if item["default"] == "nan":
+                item["default"] = None
+
+            if item["type"] == "float" or item["type"] == "double":
+                item["min"] = float(item["min"])
+                item["max"] = float(item["max"])
+                if item["default"]:
+                    item["default"] = float(item["default"])
+
+            if item["type"] == "int":
+                try:
+                    item["min"] = int(item["min"])
+                    item["max"] = int(item["max"])
+                    if item["default"]:
+                        item["default"] = int(item["default"])
+                except Exception as e:
+                    pass
+
+        else:
+            item = {"value": parts[0], "desc": " ".join(parts[3:])}
+            if "options" not in params[-1]:
+                params[-1]["options"] = []
+            params[-1]["options"].append(item)
+
+    f["params"] = params
+
+    return f
+
+
+filters = get_names()
+filters = [get_params(f) for f in filters]
+with open("./src/filters.json", "w") as outfile:
+    json.dump(filters, outfile, indent=2)