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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	ImageFileiDDS é   é   é   i   i   i   i  € i  @ i   i   i   i    i @  i €  i    é    é@   iDXT1iDXT3iDXT5éa   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   sâ  t  d| j d¡¡\}}|dkr,td| ƒ‚| j |d ¡}t|ƒdkrXtdt|ƒ ƒ‚t|ƒ}t  d| d	¡¡\}}}||f| _d
| _t  d| d	¡¡\}}	}
t  d| d¡¡ t  d| d¡¡\}}| d¡}t  d| d¡¡\}}}}}|d }d}|dkrd| _	d}n¸|dkr&d| _	d}n¢|dkr<d| _	d}nŒ|dkr¼|d7 }t| j d¡ƒ}t  d| d¡¡\}}|t
tfkrŽd| _	d}n,|tkr®d| _	d| jd< d}ntd| ƒ‚ntd | ƒ‚d!d"| j ||fg| _d S )#Nz<IIr   é|   zUnsupported header size %rr   éx   zIncomplete header: %s bytesz<3Ié   ZRGBAz<11Ié,   z<2Iz<5Ié   r   s   DXT1ZDXT1r   s   DXT3ZDXT3r   s   DXT5ZDXT5é   s   DX10ZBC7é   g]tÑEÝ?ZgammazUnimplemented DXGI format %dzUnimplemented pixel format %rZbcn)r   r   )ÚstructZunpackÚfpÚreadÚIOErrorÚlenr   Z_sizeÚmodeZpixel_formatÚDXGI_FORMAT_BC7_TYPELESSÚDXGI_FORMAT_BC7_UNORMÚDXGI_FORMAT_BC7_UNORM_SRGBZim_infoÚNotImplementedErrorÚsizeZtile)ÚselfÚmagicZheader_sizeZheader_bytesÚheaderÚflagsZheightÚwidthZpitchZdepthZmipmapsZpfsizeZpfflagsZfourccZbitcountZrmaskZgmaskZbmaskZamaskZ
data_startÚnZdxt10Zdxgi_formatZ	dimension© r'   ú1lib/python3.7/site-packages/PIL/DdsImagePlugin.pyÚ_openk   sX    









zDdsImageFile._openc             C   s   d S )Nr'   )r!   Úposr'   r'   r(   Ú	load_seek¤   s    zDdsImageFile.load_seekN)Ú__name__Ú
__module__Ú__qualname__ÚformatZformat_descriptionr)   r+   r'   r'   r'   r(   r   g   s   9r   c             C   s   | d d… dkS )Nr   s   DDS r'   )Úprefixr'   r'   r(   Ú	_validate¨   s    r1   z.dds)CÚ__doc__r   Úior   Ú r   r   Z	DDS_MAGICZ	DDSD_CAPSZDDSD_HEIGHTZ
DDSD_WIDTHZ
DDSD_PITCHZDDSD_PIXELFORMATZDDSD_MIPMAPCOUNTZDDSD_LINEARSIZEZ
DDSD_DEPTHZDDSCAPS_COMPLEXZDDSCAPS_TEXTUREZDDSCAPS_MIPMAPZDDSCAPS2_CUBEMAPZDDSCAPS2_CUBEMAP_POSITIVEXZDDSCAPS2_CUBEMAP_NEGATIVEXZDDSCAPS2_CUBEMAP_POSITIVEYZDDSCAPS2_CUBEMAP_NEGATIVEYZDDSCAPS2_CUBEMAP_POSITIVEZZDDSCAPS2_CUBEMAP_NEGATIVEZZDDSCAPS2_VOLUMEZDDPF_ALPHAPIXELSZ
DDPF_ALPHAZDDPF_FOURCCZDDPF_PALETTEINDEXED8ZDDPF_RGBZDDPF_LUMINANCEZ
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_FOURCCr   r   r   r   r1   Zregister_openr/   Zregister_extensionr'   r'   r'   r(   Ú<module>   s~   
A