o
    ev?                     @   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   BD:\Projects\ConvertPro\env\Lib\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DXTZUNCOMPRESSED_RAW_BGRAr   r   r   r   r   -       r   c                   @   r   )AlphaEncodingr   r      N)r	   r
   r   DXT1DXT3DXT5r   r   r   r   r   3   r   r   c                 C   s   t dtdtdi D ],\}}| |r6| t|d  } | |jv r6t| |  d|j d|   ||    S q
t	dt d|  d)	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prefixr   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_565G   s   *r,   Fc              	   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   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_dxt1K   sH   "rL   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   r1   )r7   r9   r:   r;   r<   r?   r=   r>   coder@   rA   rB   rC   rD   rE   rF   highr+   alphacode_indexrH   
color_coderI   rJ   rK   r   r   r   decode_dxt3   sL   
rW   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)
    rM   z<BBz<6Br   r   r.   r/   r)      r   r   rN   rO   rP   r   rQ      r0   r1   )r7   r9   r:   r;   r<   Za0Za1r?   Z
alphacode1Z
alphacode2r=   r>   rS   r@   rA   rB   rC   rD   rE   rF   r+   rU   Z	alphacoderH   rV   rI   rJ   rK   r   r   r   decode_dxt5   sb   ,


*rZ   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v 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v r9| j
 }n
td	t| j | jrHd
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_CURr4   unpack_blp_alpha_depth_sizedecoder[   reprmodesizeZtile)selfdecoderr   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   s<   z|    |   W dS  tjy } ztd|d }~ww )NzTruncated BLP file)r   )_read_blp_header_loadr4   errorOSError)rt   bufferer   r   r   rp   "  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r\td| d\| _| j dt	j
 td| d| _td| d| _d S )	Nr/   <irb   r   rc   r.   <16I@   )fdrj   r4   rm   
_safe_read_blp_compression_blp_encodingrn   _blp_alpha_encodingrk   rl   rs   
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   s`   g }t dD ]'}ztd| d\}}}}W n tjy#   Y  |S w |||||f q|S )N   <4Br/   )r3   r4   rm   r   r~   append)rt   r:   r+   rK   rJ   rI   rH   r   r   r   _read_palette@  s   z_BLPBaseDecoder._read_palettec           
      C   s   t  }t| | jd }	 ztd|d\}W n tjy%   Y |S w || \}}}}|||f}	| jr;|	|f7 }	|	|	 q)Nr   T<Br   )
r2   r   r   r   r4   rm   rh   r~   rn   r6   )
rt   paletter7   _dataoffsetrK   rJ   rI   rH   dr   r   r   
_read_bgraJ  s   


z_BLPBaseDecoder._read_bgraN)	r	   r
   r   Z	_pulls_fdrp   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   sx   | j tjkr|   d S | j dkr2| jdv r(|  }| |}| t| d S t	dt
| j t	dt
| j )Nr   )r/   r)   zUnsupported BLP encoding zUnsupported BLP compression )r   r   r   _decode_jpeg_streamr   r   r   
set_as_rawbytesr[   rq   )rt   r   r7   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 |d \}}}t
d|||f}| |  d S )Nr   )JpegImageFilerO   r/   r   re   )ZJpegImagePluginr   r4   rm   r   r   r   tellr   r   r   Z_decompression_bomb_checkrs   convertsplitmerger   tobytes)	rt   r   Zjpeg_header_sizeZjpeg_headerr7   imagerI   rJ   rK   r   r   r   r   m  s   
zBLP1Decoder._decode_jpeg_streamN)r	   r
   r   r}   r   r   r   r   r   r   Z  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| |}n| jtj	krt
 }| jtjkrZ| jd d d d }t| jd d d D ]}t| |t| jdD ]}||7 }qQqCnz| jtjkr| jd d d d }t| jd d d D ]}t| |D ]}||7 }qqvnL| jtjkr| jd d d d }t| jd d d D ]}t| |D ]}||7 }qqntdt| j td	t| j td
t| j | t| d S )Nr   r   r   r/   r.   )r8   rM   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r   rj   r   r   r   r   r   r   r   r2   r   r   r   rs   r3   rL   r   boolrn   r   rW   r   rZ   r[   rq   r   r   )rt   r   r7   ZlinesizeZybr   r   r   r   r}   ~  sL   




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    rd   r   r/   r   r   )imZ
getpaletter3   r4   pack)rt   r7   r   r+   rI   rJ   rK   rH   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 }q6q0t|d|fS )N   r   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r    r4   r   r   rs   r3   Zgetpixel)	rt   bufsizeZpalette_datar   r7   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r:dnd |td	d |td	d |tjdg| j
R   |dkrs|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   rb   rd   r   rc   r)   ra   rf   )rr   
ValueErrorZencoderinfogetwriter4   r   r   r   r   rs   r   _save)r   rg   filenameZsave_allri   r   r   r   r     s   

"$r   z.blpr   ZBLP2ra   )F)%rw   rk   r4   r$   r   ior    r   r   Z
_deprecater   r   r   r   r&   r,   rL   rW   rZ   NotImplementedErrorr[   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>   s:    
75F;#0
