o
    f2                     @  s   d dl mZ d dlZddlmZmZ ddlmZ dd
dZ	G dd dejZ
G dd dejZee
je
e	 ede ee
jd dS )    )annotationsN   )Image	ImageFile)i32beprefixbytesreturnboolc                 C  s   | d d dkS )N   s   qoif )r   r   r   K/home/ubuntu/webapp/venv/lib/python3.10/site-packages/PIL/QoiImagePlugin.py_accept   s   r   c                   @  s   e Zd ZdZdZdddZdS )	QoiImageFileQOIzQuite OK Imager	   Nonec                   s   t  jdsd}t|t fddtdD  _ jdd }|dkr*d	nd
 _ jdt	j
 dd j  j d fg _d S )Nr   znot a QOI filec                 3  s     | ]}t  jd V  qdS )r   N)i32fpread).0iselfr   r   	<genexpr>   s    z%QoiImageFile._open.<locals>.<genexpr>   r   r      RGBRGBAqoi)r   r   )r   r   r   SyntaxErrortuplerange_size_modeseekosSEEK_CURtelltile)r   msgchannelsr   r   r   _open   s    zQoiImageFile._openN)r	   r   )__name__
__module____qualname__formatformat_descriptionr+   r   r   r   r   r      s    r   c                   @  s>   e Zd ZU dZdZded< i Zded< dddZdddZdS )
QoiDecoderTNzbytes | bytearray | None_previous_pixelzdict[int, bytes | bytearray]_previously_seen_pixelsvaluebytes | bytearrayr	   r   c                 C  sD   || _ |\}}}}|d |d  |d  |d  d }|| j|< d S )Nr            @   )r2   r3   )r   r4   rgba
hash_valuer   r   r   _add_to_previous_pixels+   s   $z"QoiDecoder._add_to_previous_pixelsbufferr   tuple[int, int]c                   sN  j d usJ i _td t }tj}jjjj	 | }t
||k r j dd }|dkrJjrJtj djdd   }n|dkrUj d}n|d? }|dkrk|d	@ }j|td
}n|dkrjrtjd |d@ d?  d d jd |d@ d?  d d jd |d@  d d jd f}nc|dkrjrj dd }	|d	@ d  |	d@ d? d }
|	d@ d }tt fddt|
d|fD }|jdd  7 }n#|dkrjr|d	@ d }j}|dkr|d d }||| 7 }q$| |dkr|d d }||7 }t
||k s+| dS )N)r   r   r      r   r      r   rB   r      ?   )r   r   r   r   0   r                      c                 3  s*    | ]\}}j |   | d  V  qdS )rG   N)r2   )r   r   diff
diff_greenr   r   r   r   [   s
    
z$QoiDecoder.decode.<locals>.<genexpr>)r   )fdr3   r?   	bytearrayr   getmodebandsmodestatexsizeysizelenr   r2   getr    	enumerate
set_as_raw)r   r@   databandsdest_lengthbyter4   opop_indexsecond_bytediff_red	diff_blue
run_lengthr   rN   r   decode2   sn    



2zQoiDecoder.decode)r4   r5   r	   r   )r@   r   r	   rA   )	r,   r-   r.   	_pulls_fdr2   __annotations__r3   r?   rf   r   r   r   r   r1   &   s   
 
r1   r   z.qoi)r   r   r	   r
   )
__future__r   r%    r   r   _binaryr   r   r   r   	PyDecoderr1   register_openr/   register_decoderregister_extensionr   r   r   r   <module>   s   
K