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A Pillow loader for .ftc and .ftu files (FTEX)
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/

Independence War 2: Edge Of Chaos - Texture File Format - 16 October 2001

The textures used for 3D objects in Independence War 2: Edge Of Chaos are in a
packed custom format called FTEX. This file format uses file extensions FTC
and FTU.
* FTC files are compressed textures (using standard texture compression).
* FTU files are not compressed.
Texture File Format
The FTC and FTU texture files both use the same format. This
has the following structure:
{header}
{format_directory}
{data}
Where:
{header} = {
    u32:magic,
    u32:version,
    u32:width,
    u32:height,
    u32:mipmap_count,
    u32:format_count
}

* The "magic" number is "FTEX".
* "width" and "height" are the dimensions of the texture.
* "mipmap_count" is the number of mipmaps in the texture.
* "format_count" is the number of texture formats (different versions of the
same texture) in this file.

{format_directory} = format_count * { u32:format, u32:where }

The format value is 0 for DXT1 compressed textures and 1 for 24-bit RGB
uncompressed textures.
The texture data for a format starts at the position "where" in the file.

Each set of texture data in the file has the following structure:
{data} = format_count * { u32:mipmap_size, mipmap_size * { u8 } }
* "mipmap_size" is the number of bytes in that mip level. For compressed
textures this is the size of the texture data compressed with DXT1. For 24 bit
uncompressed textures, this is 3 * width * height. Following this are the image
bytes for that mipmap level.

Note: All data is stored in little-Endian (Intel) byte order.
    )annotationsN)IntEnum)BytesIO   )Image	ImageFiles   FTEXc                      \ rS rSrSrSrSrg)FormatA   r   r    N)__name__
__module____qualname____firstlineno__DXT1UNCOMPRESSED__static_attributes__r       F/var/www/html/venv/lib/python3.13/site-packages/PIL/FtexImagePlugin.pyr
   r
   A   s    DLr   r
   c                  0    \ rS rSrSrSrSS jrS	S jrSrg)
FtexImageFileF   FTEXzTexture File Format (IW2:EOC)c                <   [        U R                  R                  S5      5      (       d  Sn[        U5      e[        R
                  " SU R                  R                  S5      5        [        R
                  " SU R                  R                  S5      5      U l        [        R
                  " SU R                  R                  S5      5      u  p#SU l        US:X  d   e[        R
                  " SU R                  R                  S5      5      u  pEU R                  R                  U5        [        R
                  " SU R                  R                  S5      5      u  nU R                  R                  U5      nU[        R                  :X  a!  SU l        S	S
U R                  -   SS4/U l        OGU[        R                  :X  a  SS
U R                  -   SS4/U l        OS[        U5       3n[        U5      eU R                  R!                  5         [#        U5      U l        g )N   znot an FTEX filez<iz<2i   RGBr   RGBAbcn)r   r   r   raw)r   r   r   z$Invalid texture compression format: )_acceptfpreadSyntaxErrorstructunpack_size_modeseekr
   r   sizetiler   repr
ValueErrorcloser   )selfmsgmipmap_countformat_countformatwheremipmap_sizedatas           r   _openFtexImageFile._openJ   s   tww||A''$Cc""dDGGLLO,]]5$'',,q/:
%+]]5$'',,q/%J"
 q   eTWW\\!_=UtTWW\\!_=ww||K(V[[ DJ$))!3Q:;DIv***$))!3QFGDI8fGCS/!$-r   c                    g )Nr   )r/   poss     r   	load_seekFtexImageFile.load_seekj   s    r   )r(   r'   r"   r+   N)returnNone)r:   intr=   r>   )	r   r   r   r   r3   format_descriptionr7   r;   r   r   r   r   r   r   F   s    F8 @r   r   c                    U S S [         :H  $ )Nr   )MAGIC)prefixs    r   r!   r!   n   s    "1:r   z.ftcz.ftu)rC   bytesr=   bool)__doc__
__future__r   r%   enumr   ior    r   r   rB   r
   r   r!   register_openr3   register_extensionsr   r   r   <module>rM      sz   3j #    W 
%I'' %P   M((- A   -..0@ Ar   