o
    6dD>                     @   sZ  d Z ddlZddlZddlmZ ddlmZ ddlmZm	Z	 G dd deZ
G d	d
 d
eZG dd deZdd Zd*ddZdd Zdd ZG dd deZdd ZG dd de	j	ZG dd de	jZG dd deZG d d! d!eZG d"d# d#e	jZd*d$d%Zeejee eejd& ed'e ed(e e eje e!d)e dS )+a  
Blizzard Mipmap Format (.blp)
Jerome Leclanche <jerome@leclan.ch>

The contents of this file are hereby released in the public domain (CC0)
Full text of the CC0 license:
  https://creativecommons.org/publicdomain/zero/1.0/

BLP1 files, used mostly in Warcraft III, are not fully supported.
All types of BLP2 files used in World of Warcraft are supported.

The BLP file structure consists of a header, up to 16 mipmaps of the
texture

Texture sizes must be powers of two, though the two dimensions do
not have to be equal; 512x256 is valid, but 512x200 is not.
The first mipmap (mipmap #0) is the full size image; each subsequent
mipmap halves both dimensions. The final mipmap should be 1x1.

BLP files come in many different flavours:
* JPEG-compressed (type == 0) - only supported for BLP1.
* RAW images (type == 1, encoding == 1). Each mipmap is stored as an
  array of 8-bit values, one per pixel, left to right, top to bottom.
  Each value is an index to the palette.
* DXT-compressed (type == 1, encoding == 2):
- DXT1 compression is used if alpha_encoding == 0.
  - An additional alpha bit is used if alpha_depth == 1.
  - DXT3 compression is used if alpha_encoding == 1.
  - DXT5 compression is used if alpha_encoding == 7.
    N)IntEnum)BytesIO   )Image	ImageFilec                   @   s   e Zd ZdZdS )Formatr   N)__name__
__module____qualname__JPEG r   r   iC:\Users\jesus\OneDrive\Desktop\erpjis_fastapi\backend\jisbackend\Lib\site-packages\PIL/BlpImagePlugin.pyr   (   s    r   c                   @      e Zd ZdZdZdZdS )Encodingr         N)r   r	   r
   UNCOMPRESSEDDXTZUNCOMPRESSED_RAW_BGRAr   r   r   r   r   ,       r   c                   @   r   )AlphaEncodingr   r      N)r   r	   r
   DXT1DXT3DXT5r   r   r   r   r   2   r   r   c                 C   s*   | d? d@ d> | d? d@ d> | d@ d> fS )N      r      ?   r   r   )ir   r   r   
unpack_5658   s   *r   Fc              	   C   s  t | d }t t t t f}t|D ]}|d }td| |\}}}t|\}	}
}t|\}}}tdD ]}tdD ]}|d@ }|d? }d}|dkrU|	|
|}}}nh|dkrb|||}}}n[|dkr||krd|	 | d }d|
 | d }d| | d }n:|	| d }|
| d }|| d }n'|dkr||krd| |	 d }d| |
 d }d| | d }nd	\}}}}|r|| ||||g q<|| |||g q<q6q|S )
E
    input: one "row" of data (i.e. will produce 4*width pixels)
       z<HHI   r   r      r   r   )r   r   r   r   len	bytearrayrangestructunpack_fromr   extend)dataalphablocksretblockidxcolor0color1bitsr0g0b0r1g1b1jr   controlargbr   r   r   decode_dxt1<   sH   "r@   c              	   C   s  t | d }t t t t f}t|D ]}|d }| ||d  }td|}td|d\}}td|d\}t|\}	}
}t|\}}}tdD ]}d}tdD ]}d| | d	 }|| }|rjd}|dL }nd
}|dM }|d9 }|d	d| |  ? d@ }|dkr|	|
|}}}nF|dkr|||}}}n9|d	krd	|	 | d }d	|
 | d }d	| | d }n|dkrd	| |	 d }d	| |
 d }d	| | d }|| ||||g qSqKq|S )r       z<8B<HHr!   <I   r"   Fr   T      r   r   r   r$   )r+   r-   r.   r/   r0   r3   r1   r2   coder4   r5   r6   r7   r8   r9   r:   highr   alphacode_indexr<   
color_coder=   r>   r?   r   r   r   decode_dxt3s   sL   
rK   c              	   C   s  t | d }t t t t f}t|D ]>}|d }| ||d  }td|\}}td|d}|d |d d> B |d d> B |d d	> B }|d
 |d d> B }	td|d\}
}td|d\}t|
\}}}t|\}}}tdD ]}tdD ]}dd| |  }|dkr|	|? d@ }n|dkr|	d? |d> d@ B }n||d ? d@ }|d
kr|}n6|dkr|}n/||krd| | |d |  d }n|dkrd
}n|dkrd}nd| | |d |  d }|dd| |  ? d@ }|d
kr|||}}}nI|dkr|||}}}n;|dkr)d| | d }d| | d }d| | d }n|dkrFd| | d }d| | d }d| | d }|| ||||g q{quq|S )zG
    input: one "row" of data (i.e. will produce 4 * width pixels)
    rA   z<BBz<6Br   r   r!   r"   r      r   r   rB   rC   rD   r   rE      r#   r$   )r+   r-   r.   r/   r0   Za0Za1r3   Z
alphacode1Z
alphacode2r1   r2   rG   r4   r5   r6   r7   r8   r9   r:   r   rI   Z	alphacoder<   rJ   r=   r>   r?   r   r   r   decode_dxt5   sb   ,


*rN   c                   @   s   e Zd ZdS )BLPFormatErrorN)r   r	   r
   r   r   r   r   rO      s    rO   c                 C   s   | d d dv S )Nr"      BLP1   BLP2r   )prefixr   r   r   _accept   s   rT   c                   @   s    e Zd ZdZdZdZdd ZdS )BlpImageFilez 
    Blizzard Mipmap Format
    BLPzBlizzard Mipmap Formatc                 C   s   | j d| _| j dtj td| j d\| _| j dtj td| j d| _	| jdv r9| j
 }nd	t| j }t|| jrJd
nd| _|d| j d| jddffg| _d S )Nr"   r   <br   r   <IIr!   rP   zBad BLP magic RGBARGBr   r   r   )fpreadmagicseekosSEEK_CURr(   unpack_blp_alpha_depth_sizedecodereprrO   modesizetile)selfdecodermsgr   r   r   _open   s   
"zBlpImageFile._openN)r   r	   r
   __doc__formatformat_descriptionrm   r   r   r   r   rU      s
    rU   c                   @   s8   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d ZdS )_BLPBaseDecoderTc              
   C   s@   z|    |   W dS  tjy } zd}t||d }~ww )NzTruncated BLP file)r   )_read_blp_header_loadr(   errorOSError)rj   buffererl   r   r   r   re     s   

z_BLPBaseDecoder.decodec                 C   s   | j d td| d\| _td| d\| _td| d\| _td| d\| _| j dt	j
 td| d| _t| tr\td| d\| _| j dt	j
 td| d| _td| d| _d S )	Nr"   <irW   r   rX   r!   <16I@   )fdr_   r(   rb   
_safe_read_blp_compression_blp_encodingrc   _blp_alpha_encodingr`   ra   rh   
isinstanceBLP1Decoder_blp_offsets_blp_lengths)rj   r   r   r   rs     s   
z _BLPBaseDecoder._read_blp_headerc                 C   s   t | j|S )N)r   r}   r|   )rj   lengthr   r   r   r}   0  s   z_BLPBaseDecoder._safe_readc              	   C   s`   g }t dD ]'}ztd| d\}}}}W n tjy#   Y  |S w |||||f q|S )N   <4Br"   )r'   r(   rb   r}   ru   append)rj   r.   r   r?   r>   r=   r<   r   r   r   _read_palette3  s   z_BLPBaseDecoder._read_palettec           
      C   s   t  }t| | jd }	 ztd|d\}W n tjy%   Y |S w || \}}}}|||f}	| jr;|	|f7 }	|	|	 q)Nr   T<Br   )
r&   r   r}   r   r(   rb   r]   ru   rc   r*   )
rj   paletter+   _dataoffsetr?   r>   r=   r<   dr   r   r   
_read_bgra=  s   


z_BLPBaseDecoder._read_bgraN)	r   r	   r
   Z	_pulls_fdre   rs   r}   r   r   r   r   r   r   rq     s    	
rq   c                   @   s   e Zd Zdd Zdd ZdS )r   c                 C   s   | j tjkr|   d S | j dkr4| jdv r(|  }| |}| t| d S dt	| j }t
|dt	| j }t
|)Nr   )r"   r   zUnsupported BLP encoding zUnsupported BLP compression )r~   r   r   _decode_jpeg_streamr   r   r   
set_as_rawbytesrf   rO   )rj   r   r+   rl   r   r   r   rt   N  s   


zBLP1Decoder._loadc                 C   s   ddl m} td| d\}| |}| | jd | j   | | jd }|| }t	|}||}t
|j |jdkrV|jd \}}}}	||||	d dffg|_|d \}
}}t
d|||
f}| |  d S )Nr   )JpegImageFilerC   r"   r   ZCMYKrZ   )ZJpegImagePluginr   r(   rb   r}   r   r|   tellr   r   r   Z_decompression_bomb_checkrh   rg   ri   convertsplitmerger   tobytes)rj   r   Zjpeg_header_sizeZjpeg_headerr+   imageZdecoder_nameZextentsr   argsr=   r>   r?   r   r   r   r   ^  s   

zBLP1Decoder._decode_jpeg_streamN)r   r	   r
   rt   r   r   r   r   r   r   M  s    r   c                   @   s   e Zd Zdd ZdS )BLP2Decoderc                 C   s  |   }| j| jd  | jdkr| jtjkr| |}n| jtj	krt
 }| jtjkrZ| jd d d d }t| jd d d D ]}t| |t| jdD ]}||7 }qQqCn| jtjkr| jd d d d }t| jd d d D ]}t| |D ]}||7 }qqvnR| jtjkr| jd d d d }t| jd d d D ]}t| |D ]}||7 }qqn$dt| j }t|d	t| j }t|d
t| j }t|| t| d S )Nr   r   r   r"   r!   )r,   rA   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r|   r_   r   r~   r   r   r   r   r   r&   r   r   r   rh   r'   r@   r}   boolrc   r   rK   r   rN   rf   rO   r   r   )rj   r   r+   ZlinesizeZybr   rl   r   r   r   rt   r  sJ   




zBLP2Decoder._loadN)r   r	   r
   rt   r   r   r   r   r   q  s    r   c                   @   s    e Zd ZdZdd Zdd ZdS )
BLPEncoderTc              	   C   sZ   d}| j dd}tdD ]}||d |d d  \}}}}|td||||7 }q|S )N    rY   r   r"   r   r   )imZ
getpaletter'   r(   pack)rj   r+   r   r   r=   r>   r?   r<   r   r   r   _write_palette  s    zBLPEncoder._write_palettec           	   
   C   s   |   }dt| }tjd|gdR  }| jj\}}|tjd|| gdR  7 }||7 }t|D ]}t|D ]}|td| j||f7 }q6q0t|d|fS )N   rz   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r%   r(   r   r   rh   r'   Zgetpixel)	rj   bufsizeZpalette_datar   r+   whyxr   r   r   encode  s   zBLPEncoder.encodeN)r   r	   r
   Z
_pushes_fdr   r   r   r   r   r   r     s    r   c                 C   s  | j dkrd}t|| jddkrdnd}|| |tdd |td	tj |td	| j	j d
kr<dnd |td	d |td	d |tjdg| j
R   |dkru|tdd |tdd t| |dd| j
 d| j fg d S )NPzUnsupported BLP image modeZblp_versionBLP1rQ   rR   ry   r   rW   rY   r   rX   r   rV   r[   )rg   
ValueErrorZencoderinfogetwriter(   r   r   r   r   rh   r   _save)r   r\   filenameZsave_allrl   r^   r   r   r   r     s   

"$r   z.blpr   ZBLP2rV   )F)"rn   r`   r(   enumr   ior    r   r   r   r   r   r   r@   rK   rN   NotImplementedErrorrO   rT   rU   Z	PyDecoderrq   r   r   Z	PyEncoderr   r   Zregister_openro   Zregister_extensionZregister_decoderZregister_saveZregister_encoderr   r   r   r   <module>   s6    
75F<$/
