o
    ÒèFhé  ã                   @  sŠ   d dl mZ d dlZddlmZmZ ddlmZ dd„ Z	G dd	„ d	ejƒZ
G d
d„ dejƒZe e
je
e	¡ e de¡ e e
jd¡ dS )é    )ÚannotationsNé   )ÚImageÚ	ImageFile)Úi32bec                 C  s   | d d… dkS )Né   s   qoif© )Úprefixr   r   úK/var/www/html/loop/nvenv/lib/python3.10/site-packages/PIL/QoiImagePlugin.pyÚ_accept   s   r   c                   @  s   e Zd ZdZdZdd„ ZdS )ÚQoiImageFileÚQOIzQuite OK Imagec                   sŠ   t ˆ j d¡ƒsd}t|ƒ‚t‡ fdd„tdƒD ƒƒˆ _ˆ j d¡d }|dkr*d	nd
ˆ _ˆ j dt	j
¡ ddˆ j ˆ j ¡ d fgˆ _d S )Nr   znot a QOI filec                 3  s    � | ]}t ˆ j d ¡ƒV  qdS )r   N)Úi32ÚfpÚread)Ú.0Úi©Úselfr   r
   Ú	<genexpr>   s   € z%QoiImageFile._open.<locals>.<genexpr>é   r   r   é   ÚRGBÚRGBAÚqoi)r   r   )r   r   r   ÚSyntaxErrorÚtupleÚrangeÚ_sizeÚ_modeÚseekÚosÚSEEK_CURÚtellÚtile)r   ÚmsgÚchannelsr   r   r
   Ú_open   s    zQoiImageFile._openN)Ú__name__Ú
__module__Ú__qualname__ÚformatÚformat_descriptionr'   r   r   r   r
   r      s    r   c                   @  s    e Zd ZdZdd„ Zdd„ ZdS )Ú
QoiDecoderTc                 C  sD   || _ |\}}}}|d |d  |d  |d  d }|| j|< d S )Nr   é   é   é   é@   )Ú_previous_pixelÚ_previously_seen_pixels)r   ÚvalueÚrÚgÚbÚaÚ
hash_valuer   r   r
   Ú_add_to_previous_pixels)   s   $z"QoiDecoder._add_to_previous_pixelsc                   s*  i ˆ_ d ˆ_ˆ tdƒ¡ tƒ }t ˆj¡}ˆjjˆjj	 | }t
|ƒ|k �rˆj d¡d }|dkrCtˆj d¡ƒˆjdd …  }n±|dkrNˆj d¡}n¦|d? }|dkrd|d	@ }ˆj  |td
ƒ¡}n�|dkr™tˆjd |d@ d?  d d ˆjd |d@ d?  d d ˆjd |d@  d d ˆjd fƒ}n[|dkrÖˆj d¡d }	|d	@ d ‰ |	d@ d? d }
|	d@ d }tt‡ ‡fdd„t|
d|fƒD ƒƒƒ}|ˆjdd … 7 }n|dkrô|d	@ d }ˆj}|dkrí|d d… }||| 7 }q ˆ |¡ |dk�r|d d… }||7 }t
|ƒ|k s'ˆ |¡ dS )N)r   r   r   éÿ   r   r   éþ   r   r;   r   é   é?   )r   r   r   r   é0   r   é   é   é    éð   é   é   c                 3  s*   � | ]\}}ˆj | ˆ  | d  V  qdS )r@   N)r2   )r   r   Údiff©Ú
diff_greenr   r   r
   r   W   s
   € ÿ
ÿz$QoiDecoder.decode.<locals>.<genexpr>)éÿÿÿÿr   )r3   r2   r:   Ú	bytearrayr   ÚgetmodebandsÚmodeÚstateÚxsizeÚysizeÚlenÚfdr   Úgetr   Ú	enumerateÚ
set_as_raw)r   ÚbufferÚdataÚbandsÚdest_lengthÚbyter4   ÚopÚop_indexÚsecond_byteÚdiff_redÚ	diff_blueÚ
run_lengthr   rG   r
   Údecode0   sn    ÿÿÿúÿ
þÿ

Ð
1zQoiDecoder.decodeN)r(   r)   r*   Ú	_pulls_fdr:   r`   r   r   r   r
   r-   &   s    r-   r   z.qoi)Ú
__future__r   r!   Ú r   r   Ú_binaryr   r   r   r   Ú	PyDecoderr-   Úregister_openr+   Úregister_decoderÚregister_extensionr   r   r   r
   Ú<module>   s   G