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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, called. 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.
é    N)ÚBytesIO)ÚImageÚ	ImageFiles   FTEXé   c               @   s4   e  Z d  Z d Z d Z d d „  Z d d „  Z d S)ÚFtexImageFileZFTEXzTexture File Format (IW2:EOC)c       	      C   s˜  t  j d |  j j d ƒ ƒ } t  j d |  j j d ƒ ƒ } t  j d |  j j d ƒ ƒ |  _ t  j d |  j j d ƒ ƒ \ } } d |  _ | d k sœ t ‚ t  j d |  j j d ƒ ƒ \ } } |  j j | ƒ t  j d |  j j d ƒ ƒ \ } |  j j | ƒ } | t k r:d |  _ d	 d |  j d
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__module__Ú__qualname__r   Zformat_descriptionr   r!   r   r   r   r   r   5   s   r   c             C   s   |  d  d … t  k S)Nr   )ÚMAGIC)Úprefixr   r   r   Ú	_validateY   s    r'   z.ftcz.ftu)Ú__doc__r   Úior   ZPILr   r   r%   r   r   r   r'   Zregister_openr   Zregister_extensionr   r   r   r   Ú<module>)   s   $