U
    Žb?                     @   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ZG d	d
 d
eZG dd deZdd 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   6/tmp/pip-unpacked-wheel-_wxctax1/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   3   s   r   c                 C   s   d}t dtdtdi D ]j\}}| |r| t|d  } | |jkrtj||  d | d |j	 d |  d t
d	d
 ||    S qtdt	 d|  d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 .z	 instead.r   )
stacklevelzmodule 'z' has no attribute '')r   r   r   items
startswithlen__members__warningswarnr   DeprecationWarningAttributeError)name
deprecatedenumprefixr   r   r   __getattr__9   sD       

	r'   c                 C   s*   | d? d@ d> | d? d@ d> | d@ d> fS )N      r      ?   r   r   )ir   r   r   
unpack_565T   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   r   	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_dxt1X   sD    



rM   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   r0   Fr   T      r   r   r   r2   )r8   r:   r;   r<   r=   r@   r>   r?   coderA   rB   rC   rD   rE   rF   rG   highr,   alphacode_indexrI   
color_coderJ   rK   rL   r   r   r   decode_dxt3   sH    




rX   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)
    rN   z<BBz<6Br   r   r/   r0   r*      r   r   rO   rP   rQ   r   rR      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   decode_dxt5   s^    ,










r[   c                   @   s   e Zd ZdS )BLPFormatErrorN)r   r	   r
   r   r   r   r   r\   
  s   r\   c                 C   s   | d d dkS )Nr0      BLP1   BLP2r   )r&   r   r   r   _accept  s    r`   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krr| j
 }ntd	t| j | jrd
nd| _|d| j d| jddffg| _d S )Nr0   r*   <br   r   <IIr/   r]   zBad BLP magic RGBARGBr   r   r   )fpreadmagicseekosSEEK_CURr5   unpack_blp_alpha_depth_sizedecoder\   reprmodesizetile)selfdecoderr   r   r   _open  s    
zBlpImageFile._openN)r   r	   r
   __doc__format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 )_BLPBaseDecoderTc              
   C   sH   z|    |   W n. tjk
rB } ztd|W 5 d }~X Y nX dS )NzTruncated BLP file)r   )_read_blp_header_loadr5   errorOSError)rv   bufferer   r   r   rq   /  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 )	Nr0   <irc   r   rd   r/   <16I@   )fdrk   r5   rn   
_safe_read_blp_compression_blp_encodingro   _blp_alpha_encodingrl   rm   rt   
isinstanceBLP1Decoder_blp_offsets_blp_lengths)rv   r   r   r   r~   7  s    
z _BLPBaseDecoder._read_blp_headerc                 C   s   t | j|S )N)r   r   r   )rv   lengthr   r   r   r   J  s    z_BLPBaseDecoder._safe_readc              	   C   sd   g }t dD ]R}ztd| d\}}}}W n tjk
rJ   Y  q`Y nX |||||f q|S )N   <4Br0   )r4   r5   rn   r   r   append)rv   r;   r,   rL   rK   rJ   rI   r   r   r   _read_paletteM  s    z_BLPBaseDecoder._read_palettec           
      C   s   t  }t| | jd }ztd|d\}W n tjk
rL   Y qY nX || \}}}}|||f}	| jrx|	|f7 }	|	|	 q|S )Nr   <Br   )
r3   r   r   r   r5   rn   ri   r   ro   r7   )
rv   paletter8   _dataoffsetrL   rK   rJ   rI   dr   r   r   
_read_bgraW  s    


z_BLPBaseDecoder._read_bgraN)	r   r	   r
   Z	_pulls_fdrq   r~   r   r   r   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| qvt	dt
| j nt	dt
| j d S )Nr   )r0   r*   zUnsupported BLP encoding zUnsupported BLP compression )r   r   r   _decode_jpeg_streamr   r   r   
set_as_rawbytesr\   rr   )rv   r   r8   r   r   r   r   h  s    



zBLP1Decoder._loadc                 C   s   ddl m} td| d\}| |}| | jd | j   | | jd }|| }t	|}||}t
|j d|_dd| j dd	fg|_| |  d S )
Nr   )JpegImageFilerP   r0   r   rf   Zjpegrg   )ZBGRX )ZJpegImagePluginr   r5   rn   r   r   r   tellr   r   r   Z_decompression_bomb_checkrt   rs   ru   r   tobytes)rv   r   Zjpeg_header_sizeZjpeg_headerr8   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 )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qnv| jtjkr|| jd d d d }t| jd d d D ]$}t| |D ]}||7 }qfqTntdt| j ntd	t| j ntd
t| j | t| d S )Nr   r   r   r0   r/   )r9   rN   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r   rk   r   r   r   r   r   r   r   r3   r   r   r   rt   r4   rM   r   boolro   r   rX   r   r[   r\   rr   r   r   )rv   r   r8   ZlinesizeZybr   r   r   r   r     sB     
zBLP2Decoder._loadN)r   r	   r
   r   r   r   r   r   r     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    re   r   r0   r   r   )imZ
getpaletter4   r5   pack)rv   r8   r   r,   rJ   rK   rL   rI   r   r   r   _write_palette  s     zBLPEncoder._write_palettec           	   
   C   s   |   }dt| }tjd|fd }| jj\}}|tjd|| fd 7 }||7 }t|D ].}t|D ] }|td| j||f7 }qhq\t|d|fS )N   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   bufsizeZpalette_datar   r8   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td| 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
  |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BLP1r^   r_   r   r   rc   re   r   rd   r*   rb   rg   )rd   )rs   
ValueErrorZencoderinfogetwriter5   r   r   r   r   rt   r   _save)r   rh   filenameZsave_allrj   r   r   r   r     s    

"r   z.blpr   ZBLP2rb   )F)F)$ry   rl   r5   r   r%   r   ior   r   r   r   r   r   r   r'   r-   rM   rX   r[   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   <module>   s8   
75F;#0
