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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/
é    N)ÚBytesIOé   )ÚImageÚ	ImageFile)Úo32leiDDS é   é   é   i   i   i   i  € i  @ i   i   i   i    i @  i €  i    é    é@   iDXT1iDXT3iDXT5é   é   é   éR   éS   éT   é_   é`   éa   éb   éc   c               @   s$   e Zd ZdZdZdd„ Zdd„ ZdS )ÚDdsImageFileZDDSzDirectDraw Surfacec             C   s  t | j d¡ƒsd}t|ƒ‚t d| j d¡¡\}|dkrPdt|ƒ› }t|ƒ‚| j |d ¡}t|ƒdkr„dt|ƒ› d}t|ƒ‚t	|ƒ}t d	| d
¡¡\}}}||f| _
d| _t d	| d
¡¡\}}	}
t d| d¡¡ t d| d¡¡\}}| d¡}t d| d¡¡\}t d| d¡¡}|t@ rh|t@ r@d| _nd| _dd| j d| jddffg| _n˜|t@ rìdd„ t|ƒD ƒ}d}|t@ r ||d 7 }nd| _||d |d  |d  7 }dd| j d|d d d … ddffg| _n|d }d}|d!krd"| _d}nÔ|d#kr(d$| _d%}n¼|d&kr@d'| _d(}n¤|d)kr^d*| _d}d| _n†|d+kr|d,| _d-}d| _nh|d.kršd/| _d-}d| _nJ|d0krÎ|d17 }t d| j d¡¡\}| j d¡ |ttfkrîd,| _d-}d| _nÞ|tkr
d/| _d-}d| _nÂ|tkr&d2| _d3}d| _n¦|tkrBd4| _d3}d| _nŠ|ttfkr\d5| _d6}np|tkr|d5| _d7| jd8< d6}nP|tttfkrºdd| j dd9fg| _|tkr¶d7| jd8< d S d:|› }t|ƒ‚nd;t|ƒ› }t|ƒ‚d<d| j ||| jffg| _d S )=Nr   znot a DDS filez<Ié|   zUnsupported header size éx   zIncomplete header: z bytesz<3Ié   ÚRGBAz<11Ié,   z<2Ir	   z<4Ié   ÚLAÚLÚraw)r   r   r   r   c             S   s"   i | ]\}}d dddg| |“qS )ÚRÚGÚBÚA© )Ú.0ÚiÚmaskr%   r%   úD/var/www/html/venv/lib/python3.7/site-packages/PIL/DdsImagePlugin.pyú
<dictcomp>—   s    z&DdsImageFile._open.<locals>.<dictcomp>Ú l      ~ ÚRGBi  ÿ i ÿ  éÿ   éÿÿÿÿs   DXT1ZDXT1s   DXT3ZDXT3r   s   DXT5ZDXT5é   s   ATI1ZBC4s   ATI2ZBC5é   s   BC5SZBC5Ss   DX10é   ZBC6Hé   ZBC6HSZBC7é   g]tÑEÝ?Úgamma)r   r   r   zUnimplemented DXGI format zUnimplemented pixel format Zbcn) Ú_acceptÚfpÚreadÚSyntaxErrorÚstructÚunpackÚreprÚOSErrorÚlenr   Ú_sizeÚmodeÚDDPF_LUMINANCEÚDDPF_ALPHAPIXELSÚsizeZtileÚDDPF_RGBÚ	enumerateZpixel_formatÚDXGI_FORMAT_BC5_TYPELESSÚDXGI_FORMAT_BC5_UNORMÚDXGI_FORMAT_BC5_SNORMÚDXGI_FORMAT_BC6H_UF16ÚDXGI_FORMAT_BC6H_SF16ÚDXGI_FORMAT_BC7_TYPELESSÚDXGI_FORMAT_BC7_UNORMÚDXGI_FORMAT_BC7_UNORM_SRGBÚinfoÚDXGI_FORMAT_R8G8B8A8_TYPELESSÚDXGI_FORMAT_R8G8B8A8_UNORMÚDXGI_FORMAT_R8G8B8A8_UNORM_SRGBÚNotImplementedError)ÚselfÚmsgZheader_sizeÚheader_bytesÚheaderÚflagsÚheightÚwidthZpitchÚdepthZmipmapsZpfsizeZpfflagsZfourccÚbitcountÚmasksÚrawmodeZ
data_startÚnZdxgi_formatr%   r%   r)   Ú_opens   sÂ    

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*

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
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zDdsImageFile._openc             C   s   d S )Nr%   )rR   Úposr%   r%   r)   Ú	load_seekè   s    zDdsImageFile.load_seekN)Ú__name__Ú
__module__Ú__qualname__ÚformatÚformat_descriptionr^   r`   r%   r%   r%   r)   r   o   s   ur   c          
   C   s¾  | j dkr d| j › d}t|ƒ‚| j }dddg}| j dkr@t}nt}|d d d… }| j d	krn|tO }| d
¡ t|ƒd }xt|ƒdk r”| d¡ q|W | tt	ƒtdƒ tt
tB tB tB tB ƒ t| jƒ t| jƒ t| j| d d ƒ tdƒ tdƒ tdƒd  tdƒ t|ƒ tdƒ t|ƒ d dd„ |D ƒ¡ ttƒ tdƒ tdƒ tdƒ tdƒ ¡ | 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 DDSi  ÿ i ÿ  r-   )r   r   r.   )r   r   l      ~ r	   r   r   r   r3   é   r
   ó    c             s   s   | ]}t |ƒV  qd S )N)Úo32)r&   r(   r%   r%   r)   ú	<genexpr>  s    z_save.<locals>.<genexpr>r   r    )r   r   r   )r?   r<   r@   rC   rA   Úappendr=   Úwriterh   Ú	DDS_MAGICÚ	DDSD_CAPSÚDDSD_HEIGHTÚ
DDSD_WIDTHÚ
DDSD_PITCHÚDDSD_PIXELFORMATrW   rX   ÚjoinÚDDSCAPS_TEXTUREÚsplitr   Úmerger   Ú_saverB   )Zimr6   ÚfilenamerS   r\   r[   Zpixel_flagsrZ   ÚrÚgÚbÚar%   r%   r)   rv   ì   s*    




Ìrv   c             C   s   | d d… dkS )Nr   s   DDS r%   )Úprefixr%   r%   r)   r5     s    r5   z.dds)PÚ__doc__r9   Úior   r+   r   r   Ú_binaryr   rh   rl   rm   rn   ro   rp   rq   ZDDSD_MIPMAPCOUNTZDDSD_LINEARSIZEZ
DDSD_DEPTHZDDSCAPS_COMPLEXrs   ZDDSCAPS_MIPMAPZDDSCAPS2_CUBEMAPZDDSCAPS2_CUBEMAP_POSITIVEXZDDSCAPS2_CUBEMAP_NEGATIVEXZDDSCAPS2_CUBEMAP_POSITIVEYZDDSCAPS2_CUBEMAP_NEGATIVEYZDDSCAPS2_CUBEMAP_POSITIVEZZDDSCAPS2_CUBEMAP_NEGATIVEZZDDSCAPS2_VOLUMErA   Z
DDPF_ALPHAZDDPF_FOURCCZDDPF_PALETTEINDEXED8rC   r@   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_FOURCCrN   rO   rP   rE   rF   rG   rH   rI   rJ   rK   rL   r   rv   r5   Zregister_openrd   Zregister_saveZregister_extensionr%   r%   r%   r)   Ú<module>   s’   }1