U
    Å½„b?  ã                   @   sj  d 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	m
Z
 G dd„ deƒZG d	d
„ d
eƒZG dd„ deƒZdd„ Zdd„ Zd,dd„Zdd„ Zdd„ ZG dd„ deƒZdd„ ZG dd„ de
j
ƒZG dd„ de
jƒZG d d!„ d!eƒZG d"d#„ d#eƒZG d$d%„ d%e
jƒ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 ).aÑ  
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.
é    N)ÚIntEnum)ÚBytesIOé   )ÚImageÚ	ImageFilec                   @   s   e Zd ZdZdS )ÚFormatr   N)Ú__name__Ú
__module__Ú__qualname__ÚJPEG© r   r   ú6/tmp/pip-unpacked-wheel-_wxctax1/PIL/BlpImagePlugin.pyr   )   s   r   c                   @   s   e Zd ZdZdZdZdS )ÚEncodingr   é   é   N)r   r	   r
   ÚUNCOMPRESSEDÚDXTZUNCOMPRESSED_RAW_BGRAr   r   r   r   r   -   s   r   c                   @   s   e Zd ZdZdZdZdS )ÚAlphaEncodingr   r   é   N)r   r	   r
   ÚDXT1ÚDXT3ÚDXT5r   r   r   r   r   3   s   r   c                 C   sž   d}t dtdtdi ¡ D ]j\}}|  |¡r| t|ƒd … } | |jkrtj||  d | d |j	 d |  d t
d	d
� ||    S qtdt	› d| › d�ƒ‚d S )Nz:deprecated and will be removed in Pillow 10 (2023-07-01). ZBLP_FORMAT_ZBLP_ENCODING_ZBLP_ALPHA_ENCODING_z is zUse Ú.z	 instead.r   )Ú
stacklevelzmodule 'z' has no attribute 'ú')r   r   r   ÚitemsÚ
startswithÚlenÚ__members__ÚwarningsÚwarnr   ÚDeprecationWarningÚAttributeError)ÚnameÚ
deprecatedÚenumÚprefixr   r   r   Ú__getattr__9   sD       ý

ÿþýüûúùø	õr'   c                 C   s*   | d? d@ d> | d? d@ d> | d@ d> fS )Né   é   r   é   é?   r   r   )Úir   r   r   Ú
unpack_565T   s    r-   Fc              	   C   sÄ  t | ƒd }tƒ tƒ tƒ tƒ f}t|ƒD �]”}|d }t d| |¡\}}}t|ƒ\}	}
}t|ƒ\}}}tdƒD �]L}tdƒD �]<}|d@ }|d? }d}|dkr°|	|
|  }}}nØ|dkrÊ|||  }}}n¾|dk�r6||k�rd|	 | d }d|
 | d }d| | d }n$|	| d }|
| d }|| d }nR|dk�rˆ||k�r|d| |	 d }d| |
 d }d| | d }nd	\}}}}|�r¦||  ||||g¡ q|||  |||g¡ q|qnq(|S )
úE
    input: one "row" of data (i.e. will produce 4*width pixels)
    é   z<HHIé   r   r   éÿ   r   r   )r   r   r   r   ©r   Ú	bytearrayÚrangeÚstructÚunpack_fromr-   Úextend)ÚdataÚalphaÚblocksÚretÚblockÚidxÚcolor0Úcolor1ÚbitsÚr0Úg0Úb0Úr1Úg1Úb1Újr,   ÚcontrolÚaÚrÚgÚbr   r   r   Údecode_dxt1X   sD    



rM   c              	   C   sÔ  t | ƒd }tƒ tƒ tƒ tƒ f}t|ƒD �]¤}|d }| ||d … }t d|¡}t d|d¡\}}t d|d¡\}t|ƒ\}	}
}t|ƒ\}}}tdƒD �]2}d}tdƒD �]}d| | d	 }|| }|rÚd}|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�r´d	| |	 d }d	| |
 d }d	| | d }||  ||||g¡ qªq˜q(|S )r.   é   z<8Bú<HHr/   ú<Ié   r0   Fr   Té   é   r   r   r   r2   )r8   r:   r;   r<   r=   r@   r>   r?   ÚcoderA   rB   rC   rD   rE   rF   rG   Úhighr,   Úalphacode_indexrI   Ú
color_coderJ   rK   rL   r   r   r   Údecode_dxt3�   sH    




rX   c              	   C   sÀ  t | ƒd }tƒ tƒ tƒ tƒ f}t|ƒ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|
ƒ\}}}t|ƒ\}}}tdƒD �]Ì}tdƒD �]¼}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�ržd| | |d |  d }n<|dk�r®d
}n,|dk�r¾d}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�r d| | d }d| | d }d| | d }||  ||||g¡ qøqêq(|S )zG
    input: one "row" of data (i.e. will produce 4 * width pixels)
    rN   z<BBz<6Br   r   r/   r0   r*   é   r   r   rO   rP   rQ   r   rR   é   r1   r2   )r8   r:   r;   r<   r=   Za0Za1r@   Z
alphacode1Z
alphacode2r>   r?   rT   rA   rB   rC   rD   rE   rF   rG   r,   rV   Z	alphacoderI   rW   rJ   rK   rL   r   r   r   Údecode_dxt5Ä   s^    ,










r[   c                   @   s   e Zd ZdS )ÚBLPFormatErrorN)r   r	   r
   r   r   r   r   r\   
  s   r\   c                 C   s   | d d… dkS )Nr0   ©ó   BLP1ó   BLP2r   )r&   r   r   r   Ú_accept  s    r`   c                   @   s    e Zd ZdZdZdZdd„ ZdS )ÚBlpImageFilez 
    Blizzard Mipmap Format
    Ú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krr| j 
¡ }ntd	t| jƒ› �ƒ‚| jr�d
nd| _|d| j d| jddffg| _d S )Nr0   r*   ú<br   r   ú<IIr/   r]   zBad BLP magic ÚRGBAÚRGB©r   r   r   )ÚfpÚreadÚmagicÚseekÚosÚSEEK_CURr5   ÚunpackÚ_blp_alpha_depthÚ_sizeÚdecoder\   ÚreprÚmodeÚsizeÚtile)ÚselfÚdecoderr   r   r   Ú_open  s    
zBlpImageFile._openN)r   r	   r
   Ú__doc__ÚformatÚformat_descriptionrx   r   r   r   r   ra     s   ra   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 )Ú_BLPBaseDecoderTc              
   C   sH   z|   ¡  |  ¡  W n. tjk
rB } ztdƒ|‚W 5 d }~X Y nX dS )NzTruncated BLP file)éÿÿÿÿr   )Ú_read_blp_headerÚ_loadr5   ÚerrorÚOSError)rv   ÚbufferÚer   r   r   rq   /  s    z_BLPBaseDecoder.decodec                 C   sä   | j  d¡ t d|  d¡¡\| _t d|  d¡¡\| _t d|  d¡¡\| _t d|  d¡¡\| _| j  dt	j
¡ t d|  d¡¡| _t| tƒr¸t d|  d¡¡\| _| j  dt	j
¡ t d|  d¡¡| _t d|  d¡¡| _d S )	Nr0   ú<irc   r   rd   r/   ú<16Ié@   )Úfdrk   r5   rn   Ú
_safe_readÚ_blp_compressionÚ_blp_encodingro   Ú_blp_alpha_encodingrl   rm   rt   Ú
isinstanceÚBLP1DecoderÚ_blp_offsetsÚ_blp_lengths)rv   r   r   r   r~   7  s    
z _BLPBaseDecoder._read_blp_headerc                 C   s   t  | j|¡S )N)r   rˆ   r‡   )rv   Úlengthr   r   r   rˆ   J  s    z_BLPBaseDecoder._safe_readc              	   C   sd   g }t dƒD ]R}zt d|  d¡¡\}}}}W n tjk
rJ   Y  q`Y nX | ||||f¡ q|S )Né   ú<4Br0   )r4   r5   rn   rˆ   r€   Úappend)rv   r;   r,   rL   rK   rJ   rI   r   r   r   Ú_read_paletteM  s    z_BLPBaseDecoder._read_palettec           
      C   sˆ   t ƒ }t|  | jd ¡ƒ}zt d| d¡¡\}W n tjk
rL   Y q„Y nX || \}}}}|||f}	| jrx|	|f7 }	| 	|	¡ q|S )Nr   ú<Br   )
r3   r   rˆ   r�   r5   rn   ri   r€   ro   r7   )
rv   Úpaletter8   Ú_dataÚoffsetrL   rK   rJ   rI   Údr   r   r   Ú
_read_bgraW  s    


z_BLPBaseDecoder._read_bgraN)	r   r	   r
   Z	_pulls_fdrq   r~   rˆ   r”   rš   r   r   r   r   r|   ,  s   
r|   c                   @   s   e Zd Zdd„ Zdd„ ZdS )r�   c                 C   sz   | j tjkr|  ¡  n`| j dkrb| jdkrL|  ¡ }|  |¡}|  t|ƒ¡ qvt	dt
| jƒ› �ƒ‚nt	dt
| jƒ› �ƒ‚d S )Nr   )r0   r*   zUnsupported BLP encoding zUnsupported BLP compression )r‰   r   r   Ú_decode_jpeg_streamrŠ   r”   rš   Ú
set_as_rawÚbytesr\   rr   )rv   r–   r8   r   r   r   r   h  s    



ÿÿzBLP1Decoder._loadc                 C   s¦   ddl m} t d|  d¡¡\}|  |¡}|  | jd | j ¡  ¡ |  | jd ¡}|| }t	|ƒ}||ƒ}t
 |j¡ d|_dd| j dd	fg|_|  | ¡ ¡ d S )
Nr   )ÚJpegImageFilerP   r0   r   rf   Zjpegrg   )ZBGRXÚ )ZJpegImagePluginrž   r5   rn   rˆ   rŽ   r‡   Útellr�   r   r   Z_decompression_bomb_checkrt   rs   ru   rœ   Útobytes)rv   rž   Zjpeg_header_sizeZjpeg_headerr8   Úimager   r   r   r›   z  s    
zBLP1Decoder._decode_jpeg_streamN)r   r	   r
   r   r›   r   r   r   r   r�   g  s   r�   c                   @   s   e Zd Zdd„ ZdS )ÚBLP2Decoderc                 C   sÎ  |   ¡ }| j | jd ¡ | jdk�r¨| jtjkr@|  |¡}�q¼| jtj	k�r’t
ƒ }| jtjkrº| jd d d d }t| jd d d ƒD ]*}t|  |¡t| jƒd�D ]}||7 }q¨qŒnÖ| jtjk�r| jd d d d }t| jd d d ƒD ]"}t|  |¡ƒD ]}||7 }�qqônv| jtjk�r|| jd d d d }t| jd d d ƒD ]$}t|  |¡ƒD ]}||7 }�qf�qTntdt| jƒ› �ƒ‚ntd	t| jƒ› �ƒ‚ntd
t| jƒ› �ƒ‚|  t|ƒ¡ d S )Nr   r   r   r0   r/   )r9   rN   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r”   r‡   rk   rŽ   r‰   rŠ   r   r   rš   r   r3   r‹   r   r   rt   r4   rM   rˆ   Úboolro   r   rX   r   r[   r\   rr   rœ   r�   )rv   r–   r8   ZlinesizeZybr™   r   r   r   r   ‹  sB     ÿ
ÿÿzBLP2Decoder._loadN)r   r	   r
   r   r   r   r   r   r£   Š  s   r£   c                   @   s    e Zd ZdZdd„ Zdd„ ZdS )Ú
BLPEncoderTc              	   C   sZ   d}| j  dd¡}tdƒD ]:}||d |d d … \}}}}|t d||||¡7 }q|S )Nó    re   r‘   r0   r   r’   )ÚimZ
getpaletter4   r5   Úpack)rv   r8   r–   r,   rJ   rK   rL   rI   r   r   r   Ú_write_palette½  s     zBLPEncoder._write_palettec           	   
   C   sš   |   ¡ }dt|ƒ }tjd|fdžŽ }| jj\}}|tjd|| fdžŽ 7 }||7 }t|ƒD ].}t|ƒD ] }|t d| j ||f¡¡7 }qhq\t|ƒd|fS )Né”   r…   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r•   r   )r©   r   r5   r¨   r§   rt   r4   Zgetpixel)	rv   ÚbufsizeZpalette_datar˜   r8   ÚwÚhÚyÚxr   r   r   ÚencodeÅ  s     zBLPEncoder.encodeN)r   r	   r
   Z
_pushes_fdr©   r°   r   r   r   r   r¥   º  s   r¥   c                 C   s  | j dkrtdƒ‚| j d¡dkr&dnd}| |¡ | t dd¡¡ | t d	tj¡¡ | t d	| j	j d
krtdnd¡¡ | t d	d¡¡ | t d	d¡¡ | tjd| j
žŽ ¡ |dkrâ| t dd¡¡ | t dd¡¡ t | |dd| j
 d| j fg¡ d S )NÚPzUnsupported BLP image modeZblp_versionÚBLP1r^   r_   r„   r   rc   re   r   rd   r*   rb   rg   )rd   )rs   Ú
ValueErrorZencoderinfoÚgetÚwriter5   r¨   r   r   r–   rt   r   Ú_save)r§   rh   ÚfilenameZsave_allrj   r   r   r   r¶   ×  s    

"r¶   z.blpr²   ZBLP2rb   )F)F)$ry   rl   r5   r   r%   r   Úior   rŸ   r   r   r   r   r   r'   r-   rM   rX   r[   ÚNotImplementedErrorr\   r`   ra   Z	PyDecoderr|   r�   r£   Z	PyEncoderr¥   r¶   Zregister_openrz   Zregister_extensionZregister_decoderZregister_saveZregister_encoderr   r   r   r   Ú<module>   s8   
75F;#0
