o
    sh@                     @  s  d Z ddlmZ ddlZddlZddlZddlm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dZ	d>d?ddZd@ddZd@dd ZG d!d" d"eZdAd$d%ZG d&d' d'ejZG d(d) d)ejejZG d*d+ d+eZG d,d- d-eZG d.d/ d/ejZ dBd7d8Z!e"ej#ee e$ej#d9 e%d:e e%d;e e&ej#e! e'd<e  dS )Ca  
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.
    )annotationsN)IntEnum)BytesIO)IO   )Image	ImageFilec                   @  s   e Zd ZdZdS )Formatr   N)__name__
__module____qualname__JPEG r   r   f/var/www/html/construction_image-detection-poc/venv/lib/python3.10/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DXTUNCOMPRESSED_RAW_BGRAr   r   r   r   r   0       r   c                   @  r   )AlphaEncodingr   r      N)r
   r   r   DXT1DXT3DXT5r   r   r   r   r   6   r   r   iintreturntuple[int, int, int]c                 C  s*   | d? d@ d> | d? d@ d> | d@ d> fS )N      r      ?   r   r   )r   r   r   r   
unpack_565<   s   *r%   Fdatabytesalphabool1tuple[bytearray, bytearray, bytearray, bytearray]c              	   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)r&   r(   blocksretblock_indexidxcolor0color1bitsr0g0b0r1g1b1jr   controlargbr   r   r   decode_dxt1@   sH   "rI   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&   r6   r7   r8   r9   blockr<   r:   r;   coder=   r>   r?   r@   rA   rB   rC   highr   alphacode_indexrE   
color_coderF   rG   rH   r   r   r   decode_dxt3y   sL   
rU   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)
    rJ   z<BBz<6Br   r   r,   r-   r#      r   r   rK   rL   rM   r   rN      r.   r/   )r&   r6   r7   r8   r9   rP   a0a1r<   
alphacode1
alphacode2r:   r;   rQ   r=   r>   r?   r@   rA   rB   rC   r   rS   	alphacoderE   rT   rF   rG   rH   r   r   r   decode_dxt5   sb   ,


*r]   c                   @  s   e Zd ZdS )BLPFormatErrorN)r
   r   r   r   r   r   r   r^      s    r^   prefixc                 C  s
   |  dS )N)   BLP1   BLP2)
startswith)r_   r   r   r   _accept   s   
rc   c                   @  s"   e Zd ZdZdZdZd	ddZdS )
BlpImageFilez 
    Blizzard Mipmap Format
    BLPzBlizzard Mipmap Formatr   Nonec           	      C  sj  | j d| _t| jsdt| j }t|td| j dd }| jdkr8td| j dd dk}n.td| j dd }td| j dd dk}td| j dd }| j dt	j
 td	| j d
| _| jdkrtd| j dd }| j dt	j
 |||f}d}n||||f}d}| j }|rdnd| _t|d| j ||g| _d S )Nr-   zBad BLP magic <ir   r`   rL   <br   <IIr,         RGBARGBr   r   )fpreadmagicrc   reprr^   r3   unpackseekosSEEK_CUR_sizedecode_moder   _Tilesizetile)	selfmsgcompressionr(   encodingalpha_encodingargsoffsetdecoderr   r   r   _open  s,   




zBlpImageFile._openNr   rf   )r
   r   r   __doc__formatformat_descriptionr   r   r   r   r   rd      s
    rd   c                   @  sR   e Zd ZdZdddZejdd	d
ZdddZdddZ	dddZ
d ddZdS )!_BLPBaseDecoderTbuffer$bytes | Image.SupportsArrayInterfacer   tuple[int, int]c              
   C  s@   z|    |   W dS  tjy } zd}t||d }~ww )NzTruncated BLP file)r   )_read_header_loadr3   errorOSError)r}   r   er~   r   r   r   rx   )  s   

z_BLPBaseDecoder.decoderf   c                 C  s   d S Nr   r}   r   r   r   r   2  s   z_BLPBaseDecoder._loadc                 C  s,   t d| d| _t d| d| _d S )N<16I@   )r3   rs   
_safe_read_offsets_lengthsr   r   r   r   r   6  s   z_BLPBaseDecoder._read_headerlengthr   r'   c                 C  s   | j d usJ t| j |S r   )fdr   r   )r}   r   r   r   r   r   :  s   z_BLPBaseDecoder._safe_readlist[tuple[int, int, int, int]]c              	   C  s`   g }t dD ]'}ztd| d\}}}}W n tjy#   Y  |S w |||||f q|S )N   <4Br-   )r2   r3   rs   r   r   append)r}   r7   r   rH   rG   rF   rE   r   r   r   _read_palette>  s   z_BLPBaseDecoder._read_palettepaletter(   r)   r1   c                 C  s   t  }t| | jd }	 ztd|d\}W n tjy%   Y |S w || \}}}}	|||f}
|r:|
|	f7 }
||
 q)Nr   T<Br   )	r1   r   r   r   r3   rs   rp   r   r5   )r}   r   r(   r&   _datar   rH   rG   rF   rE   dr   r   r   
_read_bgraH  s   


z_BLPBaseDecoder._read_bgraN)r   r   r   r   r   )r   r   r   r'   )r   r   )r   r   r(   r)   r   r1   )r
   r   r   	_pulls_fdrx   abcabstractmethodr   r   r   r   r   r   r   r   r   r   &  s    
	



r   c                   @  s    e Zd ZdddZdddZdS )	BLP1Decoderr   rf   c                 C  s   | j \| _| _}| jtjkr|   d S | jdkr;| jdv r/|  }| ||}| | d S dt	| j }t
|dt	| j }t
|)Nr   )r-   r#   zUnsupported BLP encoding zUnsupported BLP compression )r   _compression	_encodingr	   r   _decode_jpeg_streamr   r   
set_as_rawrr   r^   )r}   r(   r   r&   r~   r   r   r   r   [  s   

zBLP1Decoder._loadc                 C  s   ddl m} td| d\}| |}| jd usJ | | jd | j   | | jd }|| }|t	|}t
|j |jdkrb|jd j}t|tsSJ |jd j|d dfdg|_| |d d	 d S )
Nr   )JpegImageFilerL   r-   r   CMYK)r   rm   BGR)JpegImagePluginr   r3   rs   r   r   r   tellr   r   r   _decompression_bomb_checkr{   moder|   r   
isinstancetuple_replacer   converttobytes)r}   r   jpeg_header_sizejpeg_headerr&   imager   r   r   r   r   m  s   

zBLP1Decoder._decode_jpeg_streamNr   )r
   r   r   r   r   r   r   r   r   r   Z  s    
r   c                   @  s   e Zd ZdddZdS )BLP2Decoderr   rf   c                 C  s  | j \| _| _}| _|  }| jd usJ | j| jd  | jdkr| jtj	kr0| 
||}n| jtjkrt }| jtjkrf| jjd d d }t| jjd d D ]}t| ||D ]}||7 }q]qSn|| jtjkr| jjd d d }t| jjd d D ]}t| |D ]}||7 }qqnP| jtjkr| jjd d d }t| jjd d D ]}t| |D ]}||7 }qqn$dt| j }t|dt| j }t|d	t| j }t|| | d S )
Nr   r   r   r-   r,   rJ   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r   r   _alpha_encodingr   r   rt   r   r   r   r   r   r1   r   r   statexsizer2   ysizerI   r   r   rU   r   r]   rr   r^   r   )r}   r(   r   r&   linesizeybr   r~   r   r   r   r     sJ   



zBLP2Decoder._loadNr   )r
   r   r   r   r   r   r   r   r     s    r   c                   @  s$   e Zd ZdZdddZdd	d
ZdS )
BLPEncoderTr   r'   c              	   C  s   d}| j d us	J | j dd}tt|d D ]}||d |d d  \}}}}|td||||7 }qt|dk rF|d7 }t|dk s<|S )N    rl   r-   r   r   i   s       )im
getpaletter2   r0   r3   pack)r}   r&   r   r   rF   rG   rH   rE   r   r   r   _write_palette  s    zBLPEncoder._write_palettebufsizer   tuple[int, int, bytes]c           	   
   C  s   |   }dt| }tjd|gdR  }| jd usJ | jj\}}|tjd|| gdR  7 }||7 }t|D ]}t|D ]}|td| j||f7 }q=q7t|d|fS )N   r   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r0   r3   r   r   r{   r2   getpixel)	r}   r   palette_datar   r&   whyxr   r   r   encode  s   zBLPEncoder.encodeN)r   r'   )r   r   r   r   )r
   r   r   
_pushes_fdr   r   r   r   r   r   r     s    
r   r   Image.Imagero   	IO[bytes]filenamestr | bytesrf   c              
   C  s@  | j dkrd}t|| jddkrdnd}|| | jd us#J |tdd | jj d	kr4dnd
}|dkrD|td| n%|tdtj	 |td| |tdd
 |tdd
 |tjdg| j
R   |dkr|tdd |tdd
 t| |tdd| j
 d
| j g d S )NPzUnsupported BLP image modeblp_versionBLP1r`   ra   rg   r   rl   r   z<Lrh   ri   r#   re   rn   )r   
ValueErrorencoderinfogetwriter   r3   r   r   r   r{   r   _saverz   )r   ro   r   r~   rq   alpha_depthr   r   r   r     s&   

(r   z.blpr   BLP2re   )r   r   r   r    )F)r&   r'   r(   r)   r   r*   )r&   r'   r   r*   )r_   r'   r   r)   )r   r   ro   r   r   r   r   rf   )(r   
__future__r   r   ru   r3   enumr   ior   typingr    r   r   r	   r   r   r%   rI   rU   r]   NotImplementedErrorr^   rc   rd   ABC	PyDecoderr   r   r   	PyEncoderr   r   register_openr   register_extensionregister_decoderregister_saveregister_encoderr   r   r   r   <module>   s>    

9
5F
*4%0
!