U
    %d{>                     @   sn  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	 ddl
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	ImageFile)	deprecatec                   @   s   e Zd ZdZdS )Formatr   N)__name__
__module____qualname__JPEG r   r   6/tmp/pip-unpacked-wheel-vp0hp2u_/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   t dtdtdi D ]X\}}| |r| t|d  } | |jkrt| |  d|j d|   ||    S qdt d|  d}t	|d S )	NZBLP_FORMAT_ZBLP_ENCODING_ZBLP_ALPHA_ENCODING_
   .zmodule 'z' has no attribute '')
r   r   r   items
startswithlen__members__r   r	   AttributeError)nameenumprefixmsgr   r   r   __getattr__9   s       

 r%   c                 C   s*   | d? d@ d> | d? d@ d> | d@ d> fS )N      r      ?   r   r   )ir   r   r   
unpack_565H   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_dxt1L   sD    



rK   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   r0   )r6   r8   r9   r:   r;   r>   r<   r=   coder?   r@   rA   rB   rC   rD   rE   highr*   alphacode_indexrG   
color_coderH   rI   rJ   r   r   r   decode_dxt3   sH    




rV   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)
    rL   z<BBz<6Br   r   r-   r.   r(      r   r   rM   rN   rO   r   rP      r/   r0   )r6   r8   r9   r:   r;   Za0Za1r>   Z
alphacode1Z
alphacode2r<   r=   rR   r?   r@   rA   rB   rC   rD   rE   r*   rT   Z	alphacoderG   rU   rH   rI   rJ   r   r   r   decode_dxt5   s^    ,










rY   c                   @   s   e Zd ZdS )BLPFormatErrorN)r	   r
   r   r   r   r   r   rZ      s   rZ   c                 C   s   | d d dkS )Nr.      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d	t| j }t|| jrd
nd| _|d| j d| jddffg| _d S )Nr.   r(   <br   r   <IIr-   r[   zBad BLP magic RGBARGBr   r   r   )fpreadmagicseekosSEEK_CURr3   unpack_blp_alpha_depth_sizedecodereprrZ   modesizetile)selfdecoderr$   r   r   r   _open  s    
zBlpImageFile._openN)r	   r
   r   __doc__formatformat_descriptionrv   r   r   r   r   r_     s   r_   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   sL   z|    |   W n2 tjk
rF } zd}t||W 5 d }~X Y nX dS )NzTruncated BLP file)r   )_read_blp_header_loadr3   errorOSError)rt   bufferer$   r   r   r   ro   $  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.   <ira   r   rb   r-   <16I@   )fdri   r3   rl   
_safe_read_blp_compression_blp_encodingrm   _blp_alpha_encodingrj   rk   rr   
isinstanceBLP1Decoder_blp_offsets_blp_lengths)rt   r   r   r   r|   -  s    
z _BLPBaseDecoder._read_blp_headerc                 C   s   t | j|S )N)r   r   r   )rt   lengthr   r   r   r   @  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   <4Br.   )r2   r3   rl   r   r~   append)rt   r9   r*   rJ   rI   rH   rG   r   r   r   _read_paletteC  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   )
r1   r   r   r   r3   rl   rg   r~   rm   r5   )
rt   paletter6   _dataoffsetrJ   rI   rH   rG   dr   r   r   
_read_bgraM  s    


z_BLPBaseDecoder._read_bgraN)	r	   r
   r   Z	_pulls_fdro   r|   r   r   r   r   r   r   r   rz   !  s   	
rz   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k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bytesrp   rZ   )rt   r   r6   r$   r   r   r   r}   ^  s    




zBLP1Decoder._loadc                 C   s   ddl m} td| d\}| |}| | jd | j   | | jd }|| }t	|}||}t
|j |jdkr|jd \}}}}	||||	d dffg|_|d \}
}}t
d|||
f}| |  d S )Nr   )JpegImageFilerN   r.   r   ZCMYKrd   )ZJpegImagePluginr   r3   rl   r   r   r   tellr   r   r   Z_decompression_bomb_checkrr   rq   rs   convertsplitmerger   tobytes)rt   r   Zjpeg_header_sizeZjpeg_headerr6   imageZdecoder_nameZextentsr   argsrH   rI   rJ   r   r   r   r   n  s    

zBLP1Decoder._decode_jpeg_streamN)r	   r
   r   r}   r   r   r   r   r   r   ]  s   r   c                   @   s   e Zd Zdd ZdS )BLP2Decoderc                 C   s  |   }| j| jd  | jdkr| jtjkr@| |}q| jtj	krt
 }| jtjkr| jd d d d }t| jd d d D ]*}t| |t| jdD ]}||7 }qqn| jtjkr| jd d d d }t| jd d d D ]"}t| |D ]}||7 }qqnz| jtjkr|| jd d d d }t| jd d d D ]$}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-   )r7   rL   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r   ri   r   r   r   r   r   r   r   r1   r   r   r   rr   r2   rK   r   boolrm   r   rV   r   rY   rp   rZ   r   r   )rt   r   r6   ZlinesizeZybr   r$   r   r   r   r}     s@     


zBLP2Decoder._loadN)r	   r
   r   r}   r   r   r   r   r     s   r   c                   @   s    e Zd ZdZdd Zdd ZdS )
BLPEncoderTc              	   C   sZ   d}| j dd}tdD ]:}||d |d d  \}}}}|td||||7 }q|S )N    rc   r   r.   r   r   )imZ
getpaletter2   r3   pack)rt   r6   r   r*   rH   rI   rJ   rG   r   r   r   _write_palette  s     zBLPEncoder._write_palettec           	   
   C   s   |   }dt| }tjd|fd }| jj\}}|tjd|| fd 7 }||7 }t|D ].}t|D ] }|td| j||f7 }qhq\t|d|fS )N   r   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r   r3   r   r   rr   r2   Zgetpixel)	rt   bufsizeZpalette_datar   r6   whyxr   r   r   encode  s     zBLPEncoder.encodeN)r	   r
   r   Z
_pushes_fdr   r   r   r   r   r   r     s   r   c                 C   s
  | j dkrd}t|| jddkr*dnd}|| |tdd |td	tj |td	| j	j d
krxdnd |td	d |td	d |tjd| j
  |dkr|tdd |tdd t| |dd| j
 d| j fg d S )NPzUnsupported BLP image modeZblp_versionBLP1r\   r]   r   r   ra   rc   r   rb   r(   r`   re   )rb   )rq   
ValueErrorZencoderinfogetwriter3   r   r   r   r   rr   r   _save)r   rf   filenameZsave_allr$   rh   r   r   r   r     s    

"r   z.blpr   ZBLP2r`   )F)F)%rw   rj   r3   r"   r   ior    r   r   Z
_deprecater   r   r   r   r%   r+   rK   rV   rY   NotImplementedErrorrZ   r^   r_   Z	PyDecoderrz   r   r   Z	PyEncoderr   r   Zregister_openrx   Zregister_extensionZregister_decoderZregister_saveZregister_encoderr   r   r   r   <module>   s8   
75F<$/
