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A Pillow loader for .dds files (S3TC-compressed aka DXTC)
Jerome Leclanche <jerome@leclan.ch>

Documentation:
  https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt

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/
    N)BytesIO   )Image	ImageFile)o32leiDDS          i   i   i   i   i  @ i   i   i   i    i @  i   i        @   iDXT1iDXT3iDXT5         R   S   T   _   `   a   b   c   c                   @   s$   e Zd ZdZdZdd Zdd ZdS )DdsImageFileZDDSzDirectDraw Surfacec                 C   s  t | jdsd}t|td| jd\}|dkr(dt| }t|| j|d }t|dkrBdt| d}t|t	|}td	|d
\}}}||f| _
d| _td	|d
\}}	}
td|d td|d\}}|d}td|d\}td|d}|t@ r|t@ rd| _nd| _dd| j d| jddffg| _d S |t@ rdd t|D }d}|t@ r||d 7 }nd| _||d |d  |d  7 }dd| j d|d d d  ddffg| _d S |d }d}|d!krd"| _d}n|d#krd$| _d%}n|d&krd'| _d(}n|d)kr'd*| _d}d| _n|d+kr5d,| _d-}d| _n|d.krCd/| _d-}d| _n|d0kr|d17 }td| jd\}| jd |ttfv rmd,| _d-}d| _nz|tkr{d/| _d-}d| _nl|tkrd2| _d3}d| _n^|tkrd4| _d3}d| _nP|ttfv rd5| _d6}nC|tkrd5| _d7| jd8< d6}n3|tttfv rdd| j dd9fg| _|tkrd7| jd8< d S d:| }t|d;t| }t|d<d| j ||| jffg| _d S )=Nr   znot a DDS filez<I|   zUnsupported header size x   zIncomplete header: z bytesz<3I   RGBAz<11I,   z<2Ir	   z<4I   LALrawr   r   r   r   c                 S   s   i | ]\}}|g d | qS ))RGBA ).0imaskr&   r&   iC:\Users\jesus\OneDrive\Desktop\erpjis_fastapi\backend\jisbackend\Lib\site-packages\PIL/DdsImagePlugin.py
<dictcomp>   s    z&DdsImageFile._open.<locals>.<dictcomp>       ~ RGB         s   DXT1ZDXT1s   DXT3ZDXT3r   s   DXT5ZDXT5   s   ATI1ZBC4s   ATI2ZBC5   s   BC5SZBC5Ss   DX10   ZBC6H   ZBC6HSZBC7   g]tE?gamma)r   r   r   zUnimplemented DXGI format zUnimplemented pixel format Zbcn) _acceptfpreadSyntaxErrorstructunpackreprOSErrorlenr   _sizemodeDDPF_LUMINANCEDDPF_ALPHAPIXELSsizeZtileDDPF_RGB	enumerateZpixel_formatDXGI_FORMAT_BC5_TYPELESSDXGI_FORMAT_BC5_UNORMDXGI_FORMAT_BC5_SNORMDXGI_FORMAT_BC6H_UF16DXGI_FORMAT_BC6H_SF16DXGI_FORMAT_BC7_TYPELESSDXGI_FORMAT_BC7_UNORMDXGI_FORMAT_BC7_UNORM_SRGBinfoDXGI_FORMAT_R8G8B8A8_TYPELESSDXGI_FORMAT_R8G8B8A8_UNORMDXGI_FORMAT_R8G8B8A8_UNORM_SRGBNotImplementedError)selfmsgheader_sizeheader_bytesheaderflagsheightwidthZpitchdepthZmipmapsZpfsizeZpfflagsZfourccbitcountmasksrawmodeZ
data_startnZdxgi_formatr&   r&   r*   _opens   s   

"*















zDdsImageFile._openc                 C   s   d S Nr&   )rV   posr&   r&   r*   	load_seek   s   zDdsImageFile.load_seekN)__name__
__module____qualname__formatformat_descriptionrc   rf   r&   r&   r&   r*   r   o   s
    ur   c              
   C   s  | j dvrd| j  d}t|| j }g d}| j dv rt}n	t}|d d d }| j dv r6|tO }|d t|d	 }t|d
k rM|d t|d
k sB|tt	td tt
tB tB tB tB  t| j t| j t| j| d d	  td td tdd  td t| td t| ddd |D  tt td td td td  | j dkr|  \}}	}
}td|||	|
f} t| |dd| j d|ddffg d S )N)r.   r   r   r   zcannot write mode z as DDS)r/   r0   r1   )r   r   r2   )r   r   r-   r	   r   r   r   r7      r
       c                 s   s    | ]}t |V  qd S rd   )o32)r'   r)   r&   r&   r*   	<genexpr>  s    z_save.<locals>.<genexpr>r   r    r!   r   )rC   r@   rD   rG   rE   appendrA   writern   	DDS_MAGIC	DDSD_CAPSDDSD_HEIGHT
DDSD_WIDTH
DDSD_PITCHDDSD_PIXELFORMATr\   r]   joinDDSCAPS_TEXTUREsplitr   merger   _saverF   )Zimr:   filenamerW   ra   r`   Zpixel_flagsr_   rgbar&   r&   r*   r|      sz   




	


(r|   c                 C   s   | d d dkS )Nr   s   DDS r&   )prefixr&   r&   r*   r9     s   r9   z.dds)P__doc__r=   ior   r,   r   r   _binaryr   rn   rr   rs   rt   ru   rv   rw   ZDDSD_MIPMAPCOUNTZDDSD_LINEARSIZEZ
DDSD_DEPTHZDDSCAPS_COMPLEXry   ZDDSCAPS_MIPMAPZDDSCAPS2_CUBEMAPZDDSCAPS2_CUBEMAP_POSITIVEXZDDSCAPS2_CUBEMAP_NEGATIVEXZDDSCAPS2_CUBEMAP_POSITIVEYZDDSCAPS2_CUBEMAP_NEGATIVEYZDDSCAPS2_CUBEMAP_POSITIVEZZDDSCAPS2_CUBEMAP_NEGATIVEZZDDSCAPS2_VOLUMErE   Z
DDPF_ALPHAZDDPF_FOURCCZDDPF_PALETTEINDEXED8rG   rD   Z
DDS_FOURCCZDDS_RGBZDDS_RGBAZDDS_LUMINANCEZDDS_LUMINANCEAZ	DDS_ALPHAZDDS_PAL8ZDDS_HEADER_FLAGS_TEXTUREZDDS_HEADER_FLAGS_MIPMAPZDDS_HEADER_FLAGS_VOLUMEZDDS_HEADER_FLAGS_PITCHZDDS_HEADER_FLAGS_LINEARSIZEZ
DDS_HEIGHTZ	DDS_WIDTHZDDS_SURFACE_FLAGS_TEXTUREZDDS_SURFACE_FLAGS_MIPMAPZDDS_SURFACE_FLAGS_CUBEMAPZDDS_CUBEMAP_POSITIVEXZDDS_CUBEMAP_NEGATIVEXZDDS_CUBEMAP_POSITIVEYZDDS_CUBEMAP_NEGATIVEYZDDS_CUBEMAP_POSITIVEZZDDS_CUBEMAP_NEGATIVEZZDXT1_FOURCCZDXT3_FOURCCZDXT5_FOURCCrR   rS   rT   rI   rJ   rK   rL   rM   rN   rO   rP   r   r|   r9   Zregister_openrj   Zregister_saveZregister_extensionr&   r&   r&   r*   <module>   s    }1