o
    f?                     @  s  d Z ddlm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 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dZ	d>d?ddZd@ddZd@dd ZG d!d" d"eZdAd$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dBd7d8Z e!ej"ee e#ej"d9 e$d:e e$d;e e%ej"e  e&d<e dS )Ca  
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.
    )annotationsN)IntEnum)BytesIO)IO   )Image	ImageFilec                   @  s   e Zd ZdZdS )Formatr   N)__name__
__module____qualname__JPEG r   r   K/home/ubuntu/webapp/venv/lib/python3.10/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DXTUNCOMPRESSED_RAW_BGRAr   r   r   r   r   0       r   c                   @  r   )AlphaEncodingr   r      N)r
   r   r   DXT1DXT3DXT5r   r   r   r   r   6   r   r   iintreturntuple[int, int, int]c                 C  s*   | d? d@ d> | d? d@ d> | d@ d> fS )N      r      ?   r   r   )r   r   r   r   
unpack_565<   s   *r%   Fdatabytesalphabool1tuple[bytearray, bytearray, bytearray, bytearray]c              	   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   len	bytearrayrangestructunpack_fromr%   extend)r&   r(   blocksretblock_indexidxcolor0color1bitsr0g0b0r1g1b1jr   controlargbr   r   r   decode_dxt1@   sH   "rI   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   r/   )r&   r6   r7   r8   r9   blockr<   r:   r;   coder=   r>   r?   r@   rA   rB   rC   highr   alphacode_indexrE   
color_coderF   rG   rH   r   r   r   decode_dxt3y   sL   
rU   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)
    rJ   z<BBz<6Br   r   r,   r-   r#      r   r   rK   rL   rM   r   rN      r.   r/   )r&   r6   r7   r8   r9   rP   a0a1r<   
alphacode1
alphacode2r:   r;   rQ   r=   r>   r?   r@   rA   rB   rC   r   rS   	alphacoderE   rT   rF   rG   rH   r   r   r   decode_dxt5   sb   ,


*r]   c                   @  s   e Zd ZdS )BLPFormatErrorN)r
   r   r   r   r   r   r   r^      s    r^   prefixc                 C  s   | d d dv S )Nr-      BLP1   BLP2r   )r_   r   r   r   _accept   s   rc   c                   @  s"   e Zd ZdZdZdZd	ddZdS )
BlpImageFilez 
    Blizzard Mipmap Format
    BLPzBlizzard Mipmap Formatr   Nonec                 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d	t| j }t|| jrJd
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reprr^   _modesizemodetile)selfdecodermsgr   r   r   _open  s   
"zBlpImageFile._openNr   rf   )r
   r   r   __doc__formatformat_descriptionr~   r   r   r   r   rd      s
    rd   c                   @  sR   e Zd ZdZdddZejdd	d
ZdddZdddZ	dddZ
dddZdS )_BLPBaseDecoderTbufferr'   r   tuple[int, int]c              
   C  s@   z|    |   W dS  tjy } zd}t||d }~ww )NzTruncated BLP file)r   )_read_blp_header_loadr3   errorOSError)r{   r   er}   r   r   r   ru     s   

z_BLPBaseDecoder.decoderf   c                 C  s   d S Nr   r{   r   r   r   r   #  s   z_BLPBaseDecoder._loadc                 C  s   | j d usJ | j d td| d\| _td| d\| _td| d\| _td| d\| _| j dt	j
 td| d| _t| trctd| d\| _| j dt	j
 td| d| _td| d| _d S )	Nr-   <irg   r   rh   r,   <16I@   )fdro   r3   rr   
_safe_read_blp_compression_blp_encodingrs   _blp_alpha_encodingrp   rq   rx   
isinstanceBLP1Decoder_blp_offsets_blp_lengthsr   r   r   r   r   '  s   
z _BLPBaseDecoder._read_blp_headerlengthr   c                 C  s   t | j|S r   )r   r   r   )r{   r   r   r   r   r   ;  s   z_BLPBaseDecoder._safe_readlist[tuple[int, int, int, int]]c              	   C  s`   g }t dD ]'}ztd| d\}}}}W n tjy#   Y  |S w |||||f q|S )N   <4Br-   )r2   r3   rr   r   r   append)r{   r7   r   rH   rG   rF   rE   r   r   r   _read_palette>  s   z_BLPBaseDecoder._read_palettepaletter1   c           
      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   )
r1   r   r   r   r3   rr   rm   r   rs   r5   )
r{   r   r&   _dataoffsetrH   rG   rF   rE   dr   r   r   
_read_bgraH  s   


z_BLPBaseDecoder._read_bgraN)r   r'   r   r   r   )r   r   r   r'   )r   r   )r   r   r   r1   )r
   r   r   	_pulls_fdru   abcabstractmethodr   r   r   r   r   r   r   r   r   r     s    
	



r   c                   @  s    e Zd ZdddZdddZdS )	r   r   rf   c                 C  s|   | j tjkr|   d S | j dkr2| jdv r&|  }| |}| | d S dt| j }t	|dt| j }t	|)Nr   )r-   r#   zUnsupported BLP encoding zUnsupported BLP compression )
r   r	   r   _decode_jpeg_streamr   r   r   
set_as_rawrv   r^   )r{   r   r&   r}   r   r   r   r   Y  s   


zBLP1Decoder._loadc                 C  s   ddl m} td| d\}| |}| jd usJ | | 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   )JpegImageFilerL   r-   r   CMYKrj   )JpegImagePluginr   r3   rr   r   r   r   tellr   r   r   _decompression_bomb_checkrx   ry   rz   convertsplitmerger   tobytes)r{   r   jpeg_header_sizejpeg_headerr&   imagedecoder_nameextentsr   argsrF   rG   rH   reversed_imager   r   r   r   i  s   

zBLP1Decoder._decode_jpeg_streamNr   )r
   r   r   r   r   r   r   r   r   r   X  s    
r   c                   @  s   e Zd ZdddZdS )BLP2Decoderr   rf   c                 C  s  |   }| jd usJ | j| jd  | jdkr| jtjkr%| |}n| jtj	krt
 }| jtjkra| jd d d d }t| jd d d D ]}t| |t| jdD ]}||7 }qXqJn| jtjkr| jd d d d }t| jd d d D ]}t| |D ]}||7 }qq}nR| jtjkr| jd d d d }t| jd d d D ]}t| |D ]}||7 }qqn$dt| j }t|d	t| j }t|d
t| j }t|| | d S )Nr   r   r   r-   r,   )r(   rJ   zUnsupported alpha encoding zUnknown BLP encoding zUnknown BLP compression )r   r   ro   r   r   r   r   r   r   r   r1   r   r   r   rx   r2   rI   r   r)   rs   r   rU   r   r]   rv   r^   r   )r{   r   r&   linesizeybr   r}   r   r   r   r   }  sL   




zBLP2Decoder._loadNr   )r
   r   r   r   r   r   r   r   r   |  s    r   c                   @  s$   e Zd ZdZdddZdd	d
ZdS )
BLPEncoderTr   r'   c              	   C  s   d}| j d us	J | j dd}tt|d D ]}||d |d d  \}}}}|td||||7 }qt|dk rF|d7 }t|dk s<|S )N    ri   r-   r   r   i   s       )im
getpaletter2   r0   r3   pack)r{   r&   r   r   rF   rG   rH   rE   r   r   r   _write_palette  s    zBLPEncoder._write_palettebufsizer   tuple[int, int, bytes]c           	   
   C  s   |   }dt| }tjd|gdR  }| jd usJ | jj\}}|tjd|| gdR  7 }||7 }t|D ]}t|D ]}|td| j||f7 }q=q7t|d|fS )N   r   )r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   )r   r0   r3   r   r   rx   r2   getpixel)	r{   r   palette_datar   r&   whyxr   r   r   encode  s   zBLPEncoder.encodeN)r   r'   )r   r   r   r   )r
   r   r   
_pushes_fdr   r   r   r   r   r   r     s    
r   r   Image.Imagerl   	IO[bytes]filenamestr | bytesrf   c                 C  s  | j dkrd}t|| jddkrdnd}|| |tdd |td	tj |td	| j	j d
kr<dnd |td	d |td	d |tjdg| j
R   |dkru|tdd |tdd t| |dd| j
 d| j fg d S )NPzUnsupported BLP image modeblp_versionBLP1ra   rb   r   r   rg   ri   r   rh   r#   re   rk   )ry   
ValueErrorencoderinfogetwriter3   r   r   r   r   rx   r   _save)r   rl   r   r}   rn   r   r   r   r     s   

"$r   z.blpr   BLP2re   )r   r   r   r    )F)r&   r'   r(   r)   r   r*   )r&   r'   r   r*   )r_   r'   r   r)   )r   r   rl   r   r   r   r   rf   )'r   
__future__r   r   rp   r3   enumr   ior   typingr    r   r   r	   r   r   r%   rI   rU   r]   NotImplementedErrorr^   rc   rd   	PyDecoderr   r   r   	PyEncoderr   r   register_openr   register_extensionregister_decoderregister_saveregister_encoderr   r   r   r   <module>   s>    

9
5F
A$0
!