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# Copyright 2026 The LightOn Team and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from huggingface_hub.dataclasses import strict

from ...configuration_utils import PreTrainedConfig, SubConfigSpec
from ...utils import auto_docstring
from ..auto import AutoConfig


@auto_docstring(checkpoint="lightonai/LightOnOCR-1B-1025")
@strict
class LightOnOcrConfig(PreTrainedConfig):
    r"""
    Example:

    ```python
    >>> from transformers import LightOnOcrConfig, LightOnOcrForConditionalGeneration

    >>> # Initializing a LightOnOcr configuration
    >>> configuration = LightOnOcrConfig()

    >>> # Initializing a model from the configuration
    >>> model = LightOnOcrForConditionalGeneration(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```
    """

    model_type = "lighton_ocr"
    sub_configs_defaults = {
        "vision_config": SubConfigSpec(
            config_class=AutoConfig,
            model_type="pixtral",
            init_kwargs={
                "attention_dropout": 0.0,
                "head_dim": 64,
                "hidden_act": "silu",
                "hidden_size": 1024,
                "image_size": 1540,
                "initializer_range": 0.02,
                "intermediate_size": 4096,
                "model_type": "pixtral",
                "num_attention_heads": 16,
                "num_channels": 3,
                "num_hidden_layers": 24,
                "patch_size": 14,
                "rope_parameters": {"rope_type": "default", "rope_theta": 10000},
            },
        ),
        "text_config": SubConfigSpec(
            config_class=AutoConfig,
            model_type="qwen3",
            init_kwargs={
                "attention_dropout": 0.0,
                "head_dim": 128,
                "hidden_act": "silu",
                "hidden_size": 1024,
                "initializer_range": 0.02,
                "intermediate_size": 3072,
                "max_position_embeddings": 40960,
                "num_attention_heads": 16,
                "num_hidden_layers": 28,
                "num_key_value_heads": 8,
                "rms_norm_eps": 1e-6,
                "rope_theta": 1000000,
                "sliding_window": None,
                "use_cache": True,
                "vocab_size": 151936,
            },
        ),
    }

    spatial_merge_size: int = 2
    image_token_id: int = 151655
    tie_word_embeddings: bool = True
    vision_config: dict | PreTrainedConfig | None = None
    text_config: dict | PreTrainedConfig | None = None


__all__ = ["LightOnOcrConfig"]