a
    7Xh<                     @   sX  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% 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   W/var/www/viveiro_mudafortebrasil/venv/lib/python3.9/site-packages/PIL/BlpImagePlugin.pyr   (   s   r   c                   @   s   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   ,   s   r   c                   @   s   e Zd ZdZdZdZdS )AlphaEncodingr   r      N)r   r	   r
   DXT1DXT3DXT5r   r   r   r   r   2   s   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 ]L}tdD ]<}|d@ }|d? }d}|dkr|	|
|  }}}n|dkr|||  }}}n|dkr6||krd|	 | d }d|
 | d }d| | d }n$|	| d }|
| d }|| d }nR|dkr||kr|d| |	 d }d| |
 d }d| | d }nd	\}}}}|r|| ||||g q||| |||g q|qnq(|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<   sD    



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 ]2}d}tdD ]}d| | d	 }|| }|rd}|dL }nd
}|dM }|d9 }|d	d| |  ? d@ }|dkr"|	|
|  }}}n|dkr>|||  }}}nv|d	krzd	|	 | d }d	|
 | d }d	| | d }n:|dkrd	| |	 d }d	| |
 d }d	| | d }|| ||||g qqq(|S )r      z<8B<HHr   <I   r    Fr   T      r   r   r   r"   )r)   r+   r,   r-   r.   r1   r/   r0   coder2   r3   r4   r5   r6   r7   r8   highr   alphacode_indexr:   
color_coder;   r<   r=   r   r   r   decode_dxt3s   sH    




rI   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@ }n0|dkrF|	d? |d> d@ B }n||d ? d@ }|d
krf|}nt|dkrv|}nd||krd| | |d |  d }n<|dkrd
}n,|dkrd}nd| | |d |  d }|dd| |  ? d@ }|d
kr|||  }}}n|dkr*|||  }}}nv|dkrfd| | d }d| | d }d| | d }n:|dkrd| | d }d| | d }d| | d }|| ||||g qqq(|S )zG
    input: one "row" of data (i.e. will produce 4 * width pixels)
    r?   z<BBz<6Br   r   r   r    r      r   r   r@   rA   rB   r   rC      r!   r"   )r)   r+   r,   r-   r.   Za0Za1r1   Z
alphacode1Z
alphacode2r/   r0   rE   r2   r3   r4   r5   r6   r7   r8   r   rG   Z	alphacoder:   rH   r;   r<   r=   r   r   r   decode_dxt5   s^    ,










rL   c                   @   s   e Zd ZdS )BLPFormatErrorN)r   r	   r
   r   r   r   r   rM      s   rM   c                 C   s   | d d dv S )Nr       BLP1   BLP2r   )prefixr   r   r   _accept   s    rR   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 rr| j
 }nd	t| j }t|| jrd
nd| _|d| j d| jddffg| _d S )Nr    r   <br   r   <IIr   rN   zBad BLP magic RGBARGBr   r   r   )fpreadmagicseekosSEEK_CURr&   unpack_blp_alpha_depth_sizedecodereprrM   _modesizemodetile)selfdecodermsgr   r   r   _open   s    
zBlpImageFile._openN)r   r	   r
   __doc__formatformat_descriptionrl   r   r   r   r   rS      s   rS   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   sN   z|    |   W n4 tjyH } zd}t||W Y d }~n
d }~0 0 dS )NzTruncated BLP file)r   )_read_blp_header_loadr&   errorOSError)ri   buffererk   r   r   r   rc     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rtd| d\| _| j dt	j
 td| d| _td| d| _d S )	Nr    <irU   r   rV   r   <16I@   )fdr]   r&   r`   
_safe_read_blp_compression_blp_encodingra   _blp_alpha_encodingr^   r_   rf   
isinstanceBLP1Decoder_blp_offsets_blp_lengths)ri   r   r   r   rr     s    
z _BLPBaseDecoder._read_blp_headerc                 C   s   t | j|S )N)r   r|   r{   )ri   lengthr   r   r   r|   0  s    z_BLPBaseDecoder._safe_readc              	   C   sb   g }t dD ]P}ztd| d\}}}}W n tjyH   Y  q^Y n0 |||||f q|S )N   <4Br    )r%   r&   r`   r|   rt   append)ri   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yJ   Y qY n0 || \}}}}|||f}	| jrv|	|f7 }	|	|	 q|S )Nr   <Br   )
r$   r   r|   r   r&   r`   r[   rt   ra   r(   )
ri   paletter)   _dataoffsetr=   r<   r;   r:   dr   r   r   
_read_bgra=  s    


z_BLPBaseDecoder._read_bgraN)	r   r	   r
   Z	_pulls_fdrc   rr   r|   r   r   r   r   r   r   rp     s   	
rp   c                   @   s   e Zd Zdd Zdd ZdS )r   c                 C   s   | j tjkr|   nh| j dkrf| jdv rL|  }| |}| t| q~dt	| j }t
|ndt	| j }t
|d S )Nr   )r    r   zUnsupported BLP encoding zUnsupported BLP compression )r}   r   r   _decode_jpeg_streamr~   r   r   
set_as_rawbytesrd   rM   )ri   r   r)   rk   r   r   r   rs   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r|jd \}}}}	||||	d dffg|_|d \}
}}t
d|||
f}| |  d S )Nr   )JpegImageFilerA   r    r   ZCMYKrX   )ZJpegImagePluginr   r&   r`   r|   r   r{   tellr   r   r   Z_decompression_bomb_checkrf   rg   rh   convertsplitmerger   tobytes)ri   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
   rs   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@| |}q| jtj	krt
 }| jtjkr| jd d d d }t| jd d d D ]*}t| |t| jdD ]}||7 }qqn| jtjkr| jd d d d }t| jd d d D ]"}t| |D ]}||7 }qqnz| jtjkr|| jd d d d }t| jd d d D ]$}t| |D ]}||7 }qfqTndt| j }t|nd	t| j }t|nd
t| j }t|| t| d S )Nr   r   r   r    r   )r*   r?   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r{   r]   r   r}   r~   r   r   r   r   r$   r   r   r   rf   r%   r>   r|   boolra   r   rI   r   rL   rd   rM   r   r   )ri   r   r)   ZlinesizeZybr   rk   r   r   r   rs   r  s>    


zBLP2Decoder._loadN)r   r	   r
   rs   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   sx   d}| j dd}tt|d D ]:}||d |d d  \}}}}|td||||7 }q"t|dk rt|d7 }q^|S )N    rW   r    r   r   i   s       )imZ
getpaletter%   r#   r&   pack)ri   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 }qlq`t|d|fS )N   ry   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r#   r&   r   r   rf   r%   Zgetpixel)	ri   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rxdnd |td	d |td	d |tjdg| j
R   |dkr|tdd |tdd t| |dd| j
 d| j fg d S )NPzUnsupported BLP image modeZblp_versionBLP1rO   rP   rx   r   rU   rW   r   rV   r   rT   rY   )rg   
ValueErrorZencoderinfogetwriter&   r   r   r   r   rf   r   _save)r   rZ   filenamerk   r\   r   r   r   r     s    

"r   z.blpr   ZBLP2rT   )F)"rm   r^   r&   enumr   ior    r   r   r   r   r   r   r>   rI   rL   NotImplementedErrorrM   rR   rS   Z	PyDecoderrp   r   r   Z	PyEncoderr   r   Zregister_openrn   Zregister_extensionZregister_decoderZregister_saveZregister_encoderr   r   r   r   <module>   s4   
75F<$/