from transformers.configuration_utils import PretrainedConfig


class XvectorConfig(PretrainedConfig):

    model_type = 'xvector'

    def __init__(
        self, 
        n_mels=40, 
        sample_rate=16000, 
        win_length=25, 
        hop_length=10, 
        mean_norm=True, 
        std_norm=False, 
        norm_type='sentence', 
        tdnn_blocks=5, 
        tdnn_channels=[512, 512, 512, 512, 1500], 
        tdnn_kernel_sizes=[5, 3, 3, 1, 1], 
        tdnn_dilations=[1, 2, 3, 1, 1], 
        hidden_size=512, 
        num_classes=1251, 
        loss_fn='aam', 
        auto_map={
            "AutoConfig": "configuration_xvector.XvectorConfig", 
            "AutoModel": "modeling_xvector.XvectorModel", 
            "AutoModelForAudioClassification": "modeling_xvector.XvectorModelForSequenceClassification"
        },
        initializer_range=0.02,
        **kwargs
    ):
        # Compute features
        self.n_mels = n_mels
        self.sample_rate = sample_rate
        self.win_length = win_length
        self.hop_length = hop_length

        # Mean variance norm
        self.mean_norm = mean_norm
        self.std_norm = std_norm
        self.norm_type = norm_type

        # Embedding model
        self.tdnn_blocks = tdnn_blocks
        self.tdnn_channels = tdnn_channels
        self.tdnn_kernel_sizes = tdnn_kernel_sizes
        self.tdnn_dilations = tdnn_dilations
        self.hidden_size = hidden_size

        # Classifier
        self.num_classes = num_classes
        self.loss_fn = loss_fn

        # Others
        self.auto_map = auto_map
        self.initializer_range = initializer_range

        super().__init__(**kwargs)