o Z#a8@sdZddlZddlmZddlmZmZdZdZdZ dZ dZ dZ dZ d d Zd!d d ZddZddZGdddeZGdddejZGdddejZGdddeZGdddeZddZeejeeeejdedeed edS)"a Blizzard Mipmap Format (.blp) Jerome Leclanche 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/ BLP1 files, used mostly in Warcraft III, are not fully supported. All types of BLP2 files used in World of Warcraft are supported. The BLP file structure consists of a header, up to 16 mipmaps of the texture Texture sizes must be powers of two, though the two dimensions do not have to be equal; 512x256 is valid, but 512x200 is not. The first mipmap (mipmap #0) is the full size image; each subsequent mipmap halves both dimensions. The final mipmap should be 1x1. BLP files come in many different flavours: * JPEG-compressed (type == 0) - only supported for BLP1. * RAW images (type == 1, encoding == 1). Each mipmap is stored as an array of 8-bit values, one per pixel, left to right, top to bottom. Each value is an index to the palette. * DXT-compressed (type == 1, encoding == 2): - DXT1 compression is used if alpha_encoding == 0. - An additional alpha bit is used if alpha_depth == 1. - DXT3 compression is used if alpha_encoding == 1. - DXT5 compression is used if alpha_encoding == 7. N)BytesIO)Image ImageFilecCs*|d?d@d>|d?d@d>|d@d>fS)N r?r)ir r 4/usr/lib/python3/dist-packages/PIL/BlpImagePlugin.py unpack_5650s*rFc Cst|d}ttttf}t|D]}|d}td||\}}}t|\} } } t|\} } }tdD]}tdD]}|d@}|d?}d}|dkrU| | | }}}nh|dkrb| | |}}}n[|dkr||krd| | d}d| | d}d| |d}n:| | d}| | d}| |d}n'|dkr||krd| | d}d| | d}d|| d}nd \}}}}|r||||||gq<|||||gq}|d}|||d}td|\}}td|d}|d|dd>B|dd>B|dd >B}|d |d d>B} td |d\} } td |d\} t| \} }}t| \}}}tdD]}tdD]}dd||}|dkr| |?d@}n|dkr| d?|d >d@B}n||d?d@}|d kr|}n6|d kr|}n/||krd|||d |d}n|dkrd }n|dkrd}nd|||d |d}| dd||?d@}|d kr| ||}}}nI|d kr |||}}}n;|dkr)d| |d}d||d}d||d}n|dkrFd|| d}d||d}d||d}||||||gq{quq|S)zG input: one "row" of data (i.e. will produce 4 * width pixels) r2zs2  75F*-,7