o
    0i7                     @   s|   d dl mZ d dlmZ d dlmZmZmZmZm	Z	m
Z
 d dlmZ ddlmZmZmZmZ ddlmZ G dd	 d	eZd
S )    join)Path)AnyCallableListOptionalTupleUnion)Image   )check_integritydownload_and_extract_archivelist_dir
list_files)VisionDatasetc                       s   e Zd ZdZdZdZdddZ					dd
eee	f de
dee dee de
ddf fddZdefddZdedeeef fddZde
fddZdddZdefddZ  ZS )Omniglota  `Omniglot <https://github.com/brendenlake/omniglot>`_ Dataset.

    Args:
        root (str or ``pathlib.Path``): Root directory of dataset where directory
            ``omniglot-py`` exists.
        background (bool, optional): If True, creates dataset from the "background" set, otherwise
            creates from the "evaluation" set. This terminology is defined by the authors.
        transform (callable, optional): A function/transform that takes in a PIL image
            and returns a transformed version. E.g, ``transforms.RandomCrop``
        target_transform (callable, optional): A function/transform that takes in the
            target and transforms it.
        download (bool, optional): If true, downloads the dataset zip files from the internet and
            puts it in root directory. If the zip files are already downloaded, they are not
            downloaded again.
    zomniglot-pyzDhttps://raw.githubusercontent.com/brendenlake/omniglot/master/python 68d2efa1b9178cc56df9314c21c6e718 6b91aef0f799c5bb55b94e3f2daec811)images_backgroundimages_evaluationTNFroot
background	transformtarget_transformdownloadreturnc                    s   t  jt| j||d | _|r     stdt j 	  _
t j
 _t fdd jD g  _ fddt jD  _t jg  _d S )N)r   r   zHDataset not found or corrupted. You can use download=True to download itc                 3   s.    | ]  fd dt tj D V  qdS )c                    s   g | ]}t  |qS  r   ).0car   [/home/ubuntu/SoloSpeech/.venv/lib/python3.10/site-packages/torchvision/datasets/omniglot.py
<listcomp>7   s    z/Omniglot.__init__.<locals>.<genexpr>.<listcomp>N)r   r   target_folder)r   selfr    r"   	<genexpr>7   s   , z$Omniglot.__init__.<locals>.<genexpr>c                    s0   g | ]\ } fd dt tj|dD qS )c                    s   g | ]}| fqS r   r   )r   imageidxr   r"   r#   :   s    z0Omniglot.__init__.<locals>.<listcomp>.<listcomp>z.png)r   r   r$   )r   	characterr%   r)   r"   r#   9   s    z%Omniglot.__init__.<locals>.<listcomp>)super__init__r   folderr   r   _check_integrityRuntimeErrorr   _get_target_folderr$   r   
_alphabetssum_characters	enumerate_character_images_flat_character_images)r&   r   r   r   r   r   	__class__r%   r"   r-   #   s   
zOmniglot.__init__c                 C   s
   t | jS )N)lenr7   r%   r   r   r"   __len__?   s   
zOmniglot.__len__indexc                 C   s^   | j | \}}t| j| j| |}tj|ddd}| jr#| |}| jr+| |}||fS )z
        Args:
            index (int): Index

        Returns:
            tuple: (image, target) where target is index of the target character class.
        r)modeL)	r7   r   r$   r4   r   openconvertr   r   )r&   r<   
image_namecharacter_class
image_pathr(   r   r   r"   __getitem__B   s   

zOmniglot.__getitem__c                 C   s,   |   }tt| j|d | j| sdS dS )N.zipFT)r1   r   r   r   zips_md5)r&   zip_filenamer   r   r"   r/   V   s   zOmniglot._check_integrityc                 C   sN   |   r
td d S |  }|d }| jd | }t|| j|| j| d d S )Nz%Files already downloaded and verifiedrF   /)filenamemd5)r/   printr1   download_url_prefixr   r   rG   )r&   rJ   rH   urlr   r   r"   r   \   s   zOmniglot.downloadc                 C   s   | j rdS dS )Nr   r   )r   r%   r   r   r"   r1   f   s   zOmniglot._get_target_folder)TNNF)r   N)__name__
__module____qualname____doc__r.   rM   rG   r
   strr   boolr   r   r-   intr;   r	   r   rE   r/   r   r1   __classcell__r   r   r8   r"   r      s:    


r   N)os.pathr   pathlibr   typingr   r   r   r   r	   r
   PILr   utilsr   r   r   r   visionr   r   r   r   r   r"   <module>   s     