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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/
    )annotationsN)IntEnumIntFlag   )Image	ImageFileImagePalette)i32le)o8)o32leiDDS c                   @  ,   e Zd ZdZdZdZdZdZdZdZ	dZ
d	S )
DDSDr                  i   i   N)__name__
__module____qualname__CAPSHEIGHTWIDTHPITCHPIXELFORMATMIPMAPCOUNT
LINEARSIZEDEPTH r   r   2lib/python3.10/site-packages/PIL/DdsImagePlugin.pyr          r   c                   @  s   e Zd ZdZdZdZdS )DDSCAPSr   r   i  @ N)r   r   r   COMPLEXTEXTUREMIPMAPr   r   r   r   r!   *   s    r!   c                   @  r   )
DDSCAPS2i      i   r   i    i @  i   i    N)r   r   r   CUBEMAPCUBEMAP_POSITIVEXCUBEMAP_NEGATIVEXCUBEMAP_POSITIVEYCUBEMAP_NEGATIVEYCUBEMAP_POSITIVEZCUBEMAP_NEGATIVEZZVOLUMEr   r   r   r   r%   0   r    r%   c                   @  s$   e Zd ZdZdZdZdZdZdZdS )DDPFr   r   r       @   r   N)	r   r   r   ALPHAPIXELSALPHAFOURCCPALETTEINDEXED8RGB	LUMINANCEr   r   r   r   r.   <   s    r.   c                   @  s  e Zd ZdZdZdZdZdZdZdZ	dZ
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                                                                  r/   !   "   #   $   %   &   '   (   )   *   +   ,   -   .   /   0   1   2   3   4   5   6   7   8   9   :   ;   <   =   >   ?   r0   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   [   \   ]   ^   _   `   a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s                  N)|r   r   r   UNKNOWNZR32G32B32A32_TYPELESSZR32G32B32A32_FLOATZR32G32B32A32_UINTZR32G32B32A32_SINTZR32G32B32_TYPELESSZR32G32B32_FLOATZR32G32B32_UINTZR32G32B32_SINTZR16G16B16A16_TYPELESSZR16G16B16A16_FLOATZR16G16B16A16_UNORMZR16G16B16A16_UINTZR16G16B16A16_SNORMZR16G16B16A16_SINTZR32G32_TYPELESSZR32G32_FLOATZR32G32_UINTZR32G32_SINTZR32G8X24_TYPELESSZD32_FLOAT_S8X24_UINTZR32_FLOAT_X8X24_TYPELESSZX32_TYPELESS_G8X24_UINTZR10G10B10A2_TYPELESSZR10G10B10A2_UNORMZR10G10B10A2_UINTZR11G11B10_FLOATR8G8B8A8_TYPELESSR8G8B8A8_UNORMR8G8B8A8_UNORM_SRGBZR8G8B8A8_UINTZR8G8B8A8_SNORMZR8G8B8A8_SINTZR16G16_TYPELESSZR16G16_FLOATZR16G16_UNORMZR16G16_UINTZR16G16_SNORMZR16G16_SINTZR32_TYPELESSZ	D32_FLOATZ	R32_FLOATZR32_UINTZR32_SINTZR24G8_TYPELESSZD24_UNORM_S8_UINTZR24_UNORM_X8_TYPELESSZX24_TYPELESS_G8_UINTZR8G8_TYPELESSZ
R8G8_UNORMZ	R8G8_UINTZ
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OPAQUE_420YUY2ZY210ZY216ZNV11ZAI44ZIA44P8A8P8ZB4G4R4A4_UNORMZP208ZV208ZV408ZSAMPLER_FEEDBACK_MIN_MIP_OPAQUEZ'SAMPLER_FEEDBACK_MIP_REGION_USED_OPAQUEr   r   r   r   r7   F   s    r7   c                   @  sp  e Zd ZdZdZdZdZdZdZdZ	dZ
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VERTEXDATAZINDEX16ZINDEX32ZQ16W16V16U16ZR16FZG16R16FZA16B16G16R16FZR32FZG32R32FZA32B32G32R32FZCxV8U8ZA1ZA2B10G10R10_XR_BIASZBINARYBUFFERi32ZUYVYZ	R8G8_B8G8r   Z	G8R8_G8B8DXT1ZDXT2DXT3ZDXT4DXT5DX10ZBC4SBC4UBC5SBC5UATI1ATI2ZMULTI2_ARGB8r   r   r   r   r      s    r   ZDDSD_ZDDSCAPS_Z	DDSCAPS2_ZDDPF_c                   @  s$   e Zd ZdZdZdd Zdd ZdS )DdsImageFileZDDSzDirectDraw Surfacec                 C  s  t | jdsd}t|td| jd\}|dkr(dt| }t|| j|d }t|dkrBdt| d}t|t	
|}td	|d
\}}}||f| _d| j }td	|d
\}	}
}td|d td|d\}}}}d}d }|tj@ r|tj@ rd| _d}nd| _d}td| d||d }d|d||ffg| _d S |tj@ r|dkrd| _np|dkr|tj@ rd| _nbd| d| }t||tj@ rd| _td| jd| _nA|tj@ r(|d }|tjkr
d| _d| _d}n'|tjkrd| _d | _d!}n|tjkr*d| _d"| _d}n|tjtjfv r<d| _d#| _d}n|tjkrKd| _d$| _d%}n|tj tj!fv r]d| _d&| _d%}n|tj"kr|d'7 }td| jd\}| jd |t#j$t#j%fv rd| _d(| _d}n|t#j&t#j'fv rd| _d#| _d}n|t#j(t#j)fv rd| _d&| _d%}n|t#j*krd| _d$| _d%}nt|t#j+krd| _d)| _d*}ne|t#j,krd| _d+| _d*}nV|t#j-t#j.t#j/fv rd| _d,| _d-}|t#j/krd.| j0d/< n7|t#j1t#j2t#j3fv rd| _|t#j3krd.| j0d/< nd0| }t4|d1t| }t4|d2| }t4||rCt56d3|||| jfg| _d S t56d4|d|pM| j7g| _d S )5Nr   znot a DDS filez<I|   zUnsupported header size x   zIncomplete header: z bytesz<3Ir?   r   r   z<11Ir^   <4IrC   r   RGBAr5   r8   <Idds_rgbr   LLAzUnsupported bitcount z for Pr&   r   r   r   r   r   ZBC4r   r9   ZBC5rG   ZBC1ZBC6Hr:   ZBC6HSZBC7r;   g]tE?ZgammazUnimplemented DXGI format zUnimplemented pixel format zUnknown pixel format flags Zbcnraw)8_acceptfpreadSyntaxErrorstructunpackreprOSErrorlenioBytesIO_sizesizer.   r5   r1   _modeZtiler6   r4   r   r   Zpaletter3   r   r   Zpixel_formatr   r   r   r   r   r   r   r   r7   r   r   r   r   r   r   r   r   r   r   r   r   infor   r   r   NotImplementedErrorr   _Tilemode)selfmsgheader_sizeZheader_bytesheaderflagsheightwidthZextentspitchdepthZmipmapsZpfsizeZpfflagsZfourccbitcountnrawmodeZ
mask_countmasksoffsetZdxgi_formatr   r   r   _openN  s   













 zDdsImageFile._openc                 C  s   d S )Nr   )r   posr   r   r   	load_seek  s   zDdsImageFile.load_seekN)r   r   r   formatZformat_descriptionr   r   r   r   r   r   r   J  s     r   c                   @  s   e Zd ZdZdd ZdS )DdsRgbDecoderTc                 C  s  | j \}}g }g }|D ]0}d}|dkr/||d ? |d > |kr/|d7 }||d ? |d > |ks|| |||?  qt }|d }	| jj| jj t| }
t||
k rt| j	
|	d}t|D ]\}}||@ }|tt||| ? ||  d 7 }qct||
k sU| | dS )Nr   r   r   little   )r   )argsappend	bytearraystateZxsizeZysizer   int
from_bytesfdr   	enumerater
   Z
set_as_raw)r   bufferr   r   Zmask_offsetsZmask_totalsmaskr   dataZ	bytecountZdest_lengthvalueiZmasked_valuer   r   r   decode  s0   


zDdsRgbDecoder.decodeN)r   r   r   Z	_pulls_fdr  r   r   r   r   r     s    r   c                 C  s  | j dvrd| j  d}t|| j d dk}| j d dkr0tj}| j }|r+g d}n(g d	}n#tj}| j d d d }g d
}|rS|  \}}	}
}td|||	|
f} |rZ|tjO }|	|r`dnd t
jt
jB t
jB t
jB t
jB }t|  d }| j| d d }|tttdd|| j| j|dd tjdgdR   tdd|d| tjdg|R   tdtjdddd  t| |tdd| j d|ddfg d S )N)r5   r   r   r   zcannot write mode z as DDSr  Ar   r   )r   r   r   )      ~ r  r  )i   i   r   r   r  r   r;   z<7Ir   Z11I)r   r   r   r   r   r   r   r   r   r   r   r   r/   z<5Ir   r   r   )r   r   r.   r6   r5   splitr   Zmerger1   r  r   r   r   r   r   r   r   Zgetbandsr   writeo32	DDS_MAGICr   Zpackr   r!   r#   r   _saver   r   )Zimr   filenamer   ZalphaZpixel_flagsr   Z	rgba_maskrgbar   r   r   r   r   r   r    s^   



 r  c                 C  s   | d d dkS )Nr   s   DDS r   )prefixr   r   r   r   5  s   r   r   z.dds)y__doc__Z
__future__r   r   r   sysenumr   r    r   r   r   Z_binaryr	   r   r
   r   r  r  r   r!   r%   r.   r7   r   modulesr   moduleitemnamesetattrr  Zitem1Zitem2Zitem3r3   Z
DDS_FOURCCr5   ZDDS_RGBr1   ZDDS_RGBAr6   ZDDS_LUMINANCEZDDS_LUMINANCEAr2   Z	DDS_ALPHAr4   ZDDS_PAL8r   r   r   r   ZDDS_HEADER_FLAGS_TEXTUREr   ZDDS_HEADER_FLAGS_MIPMAPr   ZDDS_HEADER_FLAGS_VOLUMEr   ZDDS_HEADER_FLAGS_PITCHr   ZDDS_HEADER_FLAGS_LINEARSIZEZ
DDS_HEIGHTZ	DDS_WIDTHr#   ZDDS_SURFACE_FLAGS_TEXTUREr"   r$   ZDDS_SURFACE_FLAGS_MIPMAPZDDS_SURFACE_FLAGS_CUBEMAPr'   r(   ZDDS_CUBEMAP_POSITIVEXr)   ZDDS_CUBEMAP_NEGATIVEXr*   ZDDS_CUBEMAP_POSITIVEYr+   ZDDS_CUBEMAP_NEGATIVEYr,   ZDDS_CUBEMAP_POSITIVEZr-   ZDDS_CUBEMAP_NEGATIVEZr   ZDXT1_FOURCCr   ZDXT3_FOURCCr   ZDXT5_FOURCCr   ZDXGI_FORMAT_R8G8B8A8_TYPELESSr   ZDXGI_FORMAT_R8G8B8A8_UNORMr   ZDXGI_FORMAT_R8G8B8A8_UNORM_SRGBr   ZDXGI_FORMAT_BC5_TYPELESSr   ZDXGI_FORMAT_BC5_UNORMr   ZDXGI_FORMAT_BC5_SNORMr   ZDXGI_FORMAT_BC6H_UF16r   ZDXGI_FORMAT_BC6H_SF16r   ZDXGI_FORMAT_BC7_TYPELESSr   ZDXGI_FORMAT_BC7_UNORMr   ZDXGI_FORMAT_BC7_UNORM_SRGBr   Z	PyDecoderr   r  r   Zregister_openr   Zregister_decoderZregister_saveZregister_extensionr   r   r   r   <module>   s    
|
M "4