"""LFG-2 configuration.

Thin subclass of the base Gemma 4 config that also records the audio projector
dimensions. `model_type` is kept as "gemma4" so the processor and base modules
behave identically; the custom model class is selected via `auto_map` +
`trust_remote_code` (see modeling_lfg2.py / config.json).
"""
from __future__ import annotations

from transformers import Gemma4Config


class LFG2Config(Gemma4Config):
    model_type = "gemma4"

    def __init__(
        self,
        projector_hidden: int = 4096,
        projector_mlp_layers: int = 2,
        projector_file: str = "projector_final.pt",
        **kwargs,
    ):
        super().__init__(**kwargs)
        self.projector_hidden = projector_hidden
        self.projector_mlp_layers = projector_mlp_layers
        self.projector_file = projector_file