o
    Z#a3                     @   s  d Z ddlZddlmZ ddlmZmZ ddlmZ	 dZ
dZdZd	Zd
ZdZdZdZdZd
ZdZdZdZdZdZdZdZdZdZdZdZdZd	Z dZ!dZ"dZ#e Z$e"Z%e"eB Z&e#Z'e#eB Z(eZ)e!Z*eeB eB eB Z+eZ,eZ-eZ.eZ/eZ0eZ1eZ2eeB Z3eZ4eeB Z5eeB Z6eeB Z7eeB Z8eeB Z9eeB Z:dZ;dZ<dZ=dZ>dZ?dZ@dZAd ZBd!ZCd"ZDd#ZEd$ZFG d%d& d&ejZGd'd( ZHd)d* ZIeJeGjKeGeI eLeGjKeH eMeGjKd+ dS ),a  
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/
    N)BytesIO   )Image	ImageFile)o32leiDDS          i   i   i   i   i  @ i   i   i   i    i @  i   i        @   iDXT1iDXT3iDXT5         R   S   T   a   b   c   c                   @   s$   e Zd ZdZdZdd Zdd ZdS )DdsImageFileZDDSzDirectDraw Surfacec                 C   s  t d| jd\}}|dkrtdt| | j|d }t|dkr1tdt| dt|}t d	|d
\}}}||f| _d| _	t d	|d
\}}	}
t d|d t d|d\}}|d}t d|d\}t d|d}|t
@ rdd t|D }d}|dkr||d 7 }nd| _	||d |d  |d  7 }dd| j d|d d d ddffg| _d S |d }d}|d krd!| _d}n|d"krd#| _d$}n|d%krd&| _d'}n|d(krd)| _d*}d| _	n|d+krm|d,7 }t d| jd\}| jd |ttfv rd-| _d*}d| _	nZ|tkr*d)| _d*}d| _	nL|ttfv r7d.| _d/}n?|tkrGd.| _d0| jd1< d/}n/|tttfv rfdd| j dd2fg| _|tkrdd0| jd1< d S td3| td4t| d5d| j ||| jffg| _d S )6Nz<IIr	   |   zUnsupported header size r   x   zIncomplete header: z bytesz<3I   RGBAz<11I,   z<2Iz<Iz<4I   c                 S   s   i | ]\}}|g d | qS ))RGBA ).0imaskr    r    4/usr/lib/python3/dist-packages/PIL/DdsImagePlugin.py
<dictcomp>   s    z&DdsImageFile._open.<locals>.<dictcomp> r
         ~ RGB         rawr   r   r   r   s   DXT1ZDXT1s   DXT3ZDXT3r   s   DXT5ZDXT5   s   BC5SZBC5S   s   DX10   ZBC5ZBC7   g]tE?Zgamma)r   r   r   zUnimplemented DXGI format zUnimplemented pixel format Zbcn)structunpackfpreadOSErrorreprlenr   _sizemodeDDPF_RGB	enumeratesizeZtileZpixel_formatDXGI_FORMAT_BC5_TYPELESSDXGI_FORMAT_BC5_UNORMDXGI_FORMAT_BC5_SNORMDXGI_FORMAT_BC7_TYPELESSDXGI_FORMAT_BC7_UNORMDXGI_FORMAT_BC7_UNORM_SRGBinfoDXGI_FORMAT_R8G8B8A8_TYPELESSDXGI_FORMAT_R8G8B8A8_UNORMDXGI_FORMAT_R8G8B8A8_UNORM_SRGBNotImplementedError)selfmagicheader_sizeZheader_bytesheaderflagsheightwidthZpitchdepthZmipmapsZpfsizeZpfflagsZfourccZbitcountZmasksZrawmodeZ
data_startnZdxgi_formatr    r    r$   _openq   s   

*






zDdsImageFile._openc                 C   s   d S )Nr    )rJ   posr    r    r$   	load_seek   s   zDdsImageFile.load_seekN)__name__
__module____qualname__formatZformat_descriptionrS   rU   r    r    r    r$   r   m   s
    Xr   c                 C   s  | j dvrtd| j  d|tttd tttB tB tB t	B  t| j
 t| j t| j| j dkr7dnd d d	  td
 td
 td
d  td t| j dkrYtnt td
 t| j dkrhdnd td td td t| j dkrdnd
 tt td
 td
 td
 td
  | j dkr|  \}}}}td||||f} t| |dd| j d
| j d d d d
dffg d S )N)r(   r   zcannot write mode z as DDSr   r   r
      r2   r	   r      r)   r*   r+   r'   r,   r-   r.   r   )r;   r7   writeo32	DDS_MAGIC	DDSD_CAPSDDSD_HEIGHT
DDSD_WIDTH
DDSD_PITCHDDSD_PIXELFORMATrO   rP   DDS_RGBAr<   DDSCAPS_TEXTUREsplitr   Zmerger   _saver>   )Zimr5   filenamergbar    r    r$   rg      sj   
"	


4rg   c                 C   s   | d d dkS )Nr   s   DDS r    )prefixr    r    r$   _accept   s   rn   z.dds)N__doc__r3   ior   r&   r   r   Z_binaryr   r]   r^   r_   r`   ra   rb   rc   ZDDSD_MIPMAPCOUNTZDDSD_LINEARSIZEZ
DDSD_DEPTHZDDSCAPS_COMPLEXre   ZDDSCAPS_MIPMAPZDDSCAPS2_CUBEMAPZDDSCAPS2_CUBEMAP_POSITIVEXZDDSCAPS2_CUBEMAP_NEGATIVEXZDDSCAPS2_CUBEMAP_POSITIVEYZDDSCAPS2_CUBEMAP_NEGATIVEYZDDSCAPS2_CUBEMAP_POSITIVEZZDDSCAPS2_CUBEMAP_NEGATIVEZZDDSCAPS2_VOLUMEZDDPF_ALPHAPIXELSZ
DDPF_ALPHAZDDPF_FOURCCZDDPF_PALETTEINDEXED8r<   ZDDPF_LUMINANCEZ
DDS_FOURCCZDDS_RGBrd   ZDDS_LUMINANCEZDDS_LUMINANCEAZ	DDS_ALPHAZDDS_PAL8ZDDS_HEADER_FLAGS_TEXTUREZDDS_HEADER_FLAGS_MIPMAPZDDS_HEADER_FLAGS_VOLUMEZDDS_HEADER_FLAGS_PITCHZDDS_HEADER_FLAGS_LINEARSIZEZ
DDS_HEIGHTZ	DDS_WIDTHZDDS_SURFACE_FLAGS_TEXTUREZDDS_SURFACE_FLAGS_MIPMAPZDDS_SURFACE_FLAGS_CUBEMAPZDDS_CUBEMAP_POSITIVEXZDDS_CUBEMAP_NEGATIVEXZDDS_CUBEMAP_POSITIVEYZDDS_CUBEMAP_NEGATIVEYZDDS_CUBEMAP_POSITIVEZZDDS_CUBEMAP_NEGATIVEZZDXT1_FOURCCZDXT3_FOURCCZDXT5_FOURCCrF   rG   rH   r?   r@   rA   rB   rC   rD   r   rg   rn   Zregister_openrY   Zregister_saveZregister_extensionr    r    r    r$   <module>   s    `$