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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.
    N)IntEnum)BytesIO   )Image	ImageFile)	deprecates   FTEXc                   @   s   e Zd ZdZdZdS )Formatr   r   N)__name__
__module____qualname__DXT1UNCOMPRESSED r   r   d/home/droni/.local/share/virtualenvs/DPS-5Je3_V2c/lib/python3.9/site-packages/PIL/FtexImagePlugin.pyr   @   s   r   c                 C   s   t di D ]X\}}| |r| t|d  } | |jv rt| |  d|j d|   ||    S qtdt d|  dd S )NZFORMAT_
   .zmodule 'z' has no attribute '')r   items
startswithlen__members__r   r	   AttributeError)nameenumprefixr   r   r   __getattr__E   s    

 r   c                   @   s$   e Zd ZdZdZdd Zdd ZdS )FtexImageFileZFTEXzTexture File Format (IW2:EOC)c                 C   s&  t | jdstdtd| jd td| jd| _td| jd\}}d| _|dkslJ td| jd\}}| j| td| jd\}| j|}|t	j
krd| _d	d
| j ddfg| _n4|t	jkrdd
| j ddfg| _ntdt| | j  t|| _d S )N   znot an FTEX filez<iz<2i   RGBr   ZRGBAZbcn)r   r   r   raw)r   r   r   z$Invalid texture compression format: )_acceptfpreadSyntaxErrorstructunpack_sizemodeseekr   r   sizeZtiler   
ValueErrorreprcloser   )selfZmipmap_countZformat_countformatwhereZmipmap_sizedatar   r   r   _openS   s&    


zFtexImageFile._openc                 C   s   d S )Nr   )r.   posr   r   r   	load_seekq   s    zFtexImageFile.load_seekN)r	   r
   r   r/   format_descriptionr2   r4   r   r   r   r   r   O   s   r   c                 C   s   | d d t kS )Nr   )MAGIC)r   r   r   r   r!   u   s    r!   z.ftcz.ftu)__doc__r%   r   r   ior    r   r   Z
_deprecater   r6   r   r   r   r!   Zregister_openr/   Zregister_extensionsr   r   r   r   <module>   s   5
&