prefs.py

import bpy
from bpy.types import AddonPreferences
from bpy.props import StringProperty
from bpy.props import EnumProperty
from platform import system


class RhubarbAddonPreferences(AddonPreferences):
    bl_idname = __package__

    executable_path: StringProperty(
        name="Rhubarb lipsync executable",
        subtype="FILE_PATH",
        default=bpy.utils.user_resource("SCRIPTS")
        + "\\addons\\blender-rhubarb-lipsync\\bin\\rhubarb"
        + (".exe" if system() == "Windows" else ""),
    )

    recognizer: EnumProperty(
        name="Recognizer",
        items=[
            (
                "pocketSphinx",
                "pocketSphinx",
                "PocketSphinx is an open-source speech recognition library that generally gives good results for English.",
            ),
            (
                "phonetic",
                "phonetic",
                "This recognizer is language-independent. Use it if your recordings are not in English.",
            ),
        ],
        default="pocketSphinx",
    )

    def draw(self, context):
        layout = self.layout
        layout.prop(self, "executable_path")
        layout.prop(self, "recognizer")


def register():
    bpy.utils.register_class(RhubarbAddonPreferences)


def unregister():
    bpy.utils.unregister_class(RhubarbAddonPreferences)