B
    zb                 @   sB  d dl Z d dlZd dlZd dlZd dlZd dlZd dlmZ ddlm	Z	m
Z
mZmZmZ ddlmZ ddlmZ ddlmZ ddlmZ dd	lmZ dd
lmZ eeZedjZdZ ddddddddddddddddZ!edZ"ej#Z$de$ Z%G dd  d eZ&G d!d" d"eZ'd#d$ Z(d%d& Z)dUd'd(Z*G d)d* d*Z+G d+d, d,e,Z-G d-d. d.Z.G d/d0 d0e+Z/d1d2 Z0G d3d4 d4ejZ1d5d6d7d8d9d:d;d;d<d=d>d?d@dAdBZ2dCdD Z3G dEdF dFZ4G dGdH dHZ5dIdJ Z6dKdL Z7e3dMfdNdOZ8dPdQ Z9e	:e1j;e1e0 e	<e1j;e8 e	=e1j;e7 e	>e1j;dRdSg e	?e1j;dT dS )V    N)IntEnum   )Image
ImageChops	ImageFileImagePaletteImageSequence)i16be)i32be)o8)o16be)o32be)	deprecates   \w\w\w\ws   PNG

)1r   )LzL;2)r   zL;4)r   r   )IzI;16B)RGBr   )r   zRGB;16B)PzP;1)r   zP;2)r   zP;4)r   r   )LAr   )RGBAzLA;16B)r   r   )r   zRGBA;16B))r   r   )   r   )   r   )   r   )   r   )r   r   )r   r   )r      )r   r   )r   r   )r   r   )r   r   )r   r   )r      )r   r   s   ^* *$@   c               @   s   e Zd ZdZdZdZdS )Disposalr   r   r   N)__name__
__module____qualname__OP_NONEOP_BACKGROUNDOP_PREVIOUS r$   r$   1lib/python3.7/site-packages/PIL/PngImagePlugin.pyr   c   s   r   c               @   s   e Zd ZdZdZdS )Blendr   r   N)r   r   r    	OP_SOURCEOP_OVERr$   r$   r$   r%   r&   x   s   r&   c             C   s   xht dtdi D ]T\}}| |r| t|d  } | |jkrt| |  d|j d|   ||  S qW tdt d|  dd S )NZAPNG_DISPOSE_ZAPNG_BLEND_
   .zmodule 'z' has no attribute '')	r   r&   items
startswithlen__members__r   r   AttributeError)nameenumprefixr$   r$   r%   __getattr__   s    

 r4   c             C   s&   t  }|| t}|jr"td|S )NzDecompressed Data Too Large)zlibZdecompressobjZ
decompressMAX_TEXT_CHUNKZunconsumed_tail
ValueError)sZdobjZ	plaintextr$   r$   r%   _safe_zlib_decompress   s
    r9   c             C   s   t | |d@ S )Nl    )r5   Zcrc32)dataZseedr$   r$   r%   _crc32   s    r;   c               @   s^   e Zd Zdd Zdd Zdd Zdd Zd	d
 Zdd Zdd Z	dd Z
dd ZdddZdS )ChunkStreamc             C   s   || _ g | _d S )N)fpqueue)selfr=   r$   r$   r%   __init__   s    zChunkStream.__init__c             C   s~   d}| j r(| j  \}}}| j| n*| jd}|dd }| j }t|}t|sttj	stt
dt| d|||fS )z.Fetch a new chunk. Returns header information.Nr   r   zbroken PNG file (chunk ))r>   popr=   seekreadtelli32is_cidr   LOAD_TRUNCATED_IMAGESSyntaxErrorrepr)r?   cidposlengthr8   r$   r$   r%   rD      s    
zChunkStream.readc             C   s   | S )Nr$   )r?   r$   r$   r%   	__enter__   s    zChunkStream.__enter__c             G   s   |    d S )N)close)r?   argsr$   r$   r%   __exit__   s    zChunkStream.__exit__c             C   s   d  | _  | _| _d S )N)r>   crcr=   )r?   r$   r$   r%   rO      s    zChunkStream.closec             C   s   | j |||f d S )N)r>   append)r?   rK   rL   rM   r$   r$   r%   push   s    zChunkStream.pushc             C   s*   t d||| t| d|d ||S )z"Call the appropriate chunk handlerzSTREAM %r %s %sZchunk_ascii)loggerdebuggetattrdecode)r?   rK   rL   rM   r$   r$   r%   call   s    zChunkStream.callc          
   C   s   t jr&|d d? d@ r&| || dS y>t|t|}t| jd}||krbtdt| dW n: t	j
k
r } ztdt| d|W dd}~X Y nX dS )	zRead and verify checksumr      r   Nr   z(broken PNG file (bad header checksum in rA   z(broken PNG file (incomplete checksum in )r   rH   crc_skipr;   rF   r=   rD   rI   rJ   structerror)r?   rK   r:   Zcrc1Zcrc2er$   r$   r%   rR      s    zChunkStream.crcc             C   s   | j d dS )z3Read checksum.  Used if the C module is not presentr   N)r=   rD   )r?   rK   r:   r$   r$   r%   r\      s    zChunkStream.crc_skip   IENDc          
   C   sz   g }xpy|   \}}}W n. tjk
rF } ztd|W d d }~X Y nX ||krRP | |t| j| || qW |S )Nztruncated PNG file)	rD   r]   r^   OSErrorrR   r   
_safe_readr=   rS   )r?   ZendchunkZcidsrK   rL   rM   r_   r$   r$   r%   verify   s    zChunkStream.verifyN)r`   )r   r   r    r@   rD   rN   rQ   rO   rT   rZ   rR   r\   rc   r$   r$   r$   r%   r<      s   r<   c               @   s   e Zd ZdZedddZdS )iTXtzq
    Subclass of string to allow iTXt chunks to look like strings while
    keeping their extra information

    Nc             C   s   t | |}||_||_|S )z
        :param cls: the class to use when creating the instance
        :param text: value for this key
        :param lang: language code
        :param tkey: UTF-8 version of the key name
        )str__new__langtkey)clstextrg   rh   r?   r$   r$   r%   rf     s    	ziTXt.__new__)NN)r   r   r    __doc__staticmethodrf   r$   r$   r$   r%   rd      s   rd   c               @   s6   e Zd ZdZdd ZdddZddd	Zdd
dZdS )PngInfoz<
    PNG chunk container (for use with save(pnginfo=))

    c             C   s
   g | _ d S )N)chunks)r?   r$   r$   r%   r@     s    zPngInfo.__init__Fc             C   s*   ||g}|r| d | j t| dS )a"  Appends an arbitrary chunk. Use with caution.

        :param cid: a byte string, 4 bytes long.
        :param data: a byte string of the encoded data
        :param after_idat: for use with private chunks. Whether the chunk
                           should be written after IDAT

        TN)rS   rn   tuple)r?   rK   r:   
after_idatchunkr$   r$   r%   add  s    

zPngInfo.add c             C   s   t |ts|dd}t |ts,|dd}t |tsB|dd}t |tsX|dd}|r| d|d | d | d t|  n$| d|d | d | d |  dS )	zAppends an iTXt chunk.

        :param key: latin-1 encodable text key name
        :param value: value for this key
        :param lang: language code
        :param tkey: UTF-8 version of the key name
        :param zip: compression flag

        zlatin-1strictzutf-8s   iTXts         s      N)
isinstancebytesencoderr   r5   compress)r?   keyvaluerg   rh   zipr$   r$   r%   add_itxt*  s    



&zPngInfo.add_itxtc             C   s   t |tr"| j|||j|j|dS t |ts^y|dd}W n  tk
r\   | j|||dS X t |tst|dd}|r| d|d t	
|  n| d|d |  dS )	zAppends a text chunk.

        :param key: latin-1 encodable text key name
        :param value: value for this key, text or an
           :py:class:`PIL.PngImagePlugin.iTXt` instance
        :param zip: compression flag

        )r|   zlatin-1rt   s   zTXts     s   tEXtru   N)rv   rd   r}   rg   rh   rw   rx   UnicodeErrorrr   r5   ry   )r?   rz   r{   r|   r$   r$   r%   add_textF  s    	


zPngInfo.add_textN)F)rs   rs   F)F)r   r   r    rk   r@   rr   r}   r   r$   r$   r$   r%   rm     s
   

rm   c                   s   e Zd Z fddZdd Zdd Zdd Zd	d
 Zdd Zdd Z	dd Z
dd Zdd Zdd Zdd Zdd Zdd Zdd Zdd  Zd!d" Zd#d$ Zd%d& Zd'd( Zd)d* Z  ZS )+	PngStreamc                sR   t  | i | _i | _d| _d | _d | _d | _d | _d | _	d | _
d | _d| _d S )N)r   r   r   )superr@   im_infoim_textim_sizeim_modeim_tile
im_paletteim_custom_mimetypeim_n_frames_seq_numrewind_statetext_memory)r?   r=   )	__class__r$   r%   r@   g  s    zPngStream.__init__c             C   s.   |  j |7  _ | j tkr*td| j  dd S )Nz%Too much memory used in text chunks: z>MAX_TEXT_MEMORY)r   MAX_TEXT_MEMORYr7   )r?   Zchunklenr$   r$   r%   check_text_memoryx  s    
zPngStream.check_text_memoryc             C   s   | j  | j| jd| _d S )N)infotileseq_num)r   copyr   r   r   )r?   r$   r$   r%   save_rewind  s    zPngStream.save_rewindc             C   s(   | j d | _| j d | _| j d | _d S )Nr   r   r   )r   r   r   r   )r?   r$   r$   r%   rewind  s    zPngStream.rewindc             C   s   t | j|}|d}td|d |  td||  || }|dkr\td| dyt||d d  }W n: tk
r   t j	rd }n Y n t
jk
r   d }Y nX || jd< |S )	Nru   ziCCP profile name %rzCompression method %sr   zUnknown compression method z in iCCP chunkr   icc_profile)r   rb   r=   findrV   rW   rI   r9   r7   rH   r5   r^   r   )r?   rL   rM   r8   icomp_methodr   r$   r$   r%   
chunk_iCCP  s"    


zPngStream.chunk_iCCPc             C   s   t | j|}|dk r(t jr |S tdt|dt|df| _y t|d |d f \| _| _	W n t
k
rr   Y nX |d rd| jd	< |d
 rtd|S )N   zTruncated IHDR chunkr   r   r   	      r   	interlace   zunknown filter category)r   rb   r=   rH   r7   rF   r   _MODESr   
im_rawmode	Exceptionr   rI   )r?   rL   rM   r8   r$   r$   r%   
chunk_IHDR  s     
zPngStream.chunk_IHDRc             C   s`   d| j kr"d| j d || jfg}n*| jd k	r6d| j d< dd| j || jfg}|| _|| _td S )Nbboxr|   Tdefault_image)r   r   )r   r   r   r   r   Zim_idatEOFError)r?   rL   rM   r   r$   r$   r%   
chunk_IDAT  s    


zPngStream.chunk_IDATc             C   s   t d S )N)r   )r?   rL   rM   r$   r$   r%   
chunk_IEND  s    zPngStream.chunk_IENDc             C   s&   t | j|}| jdkr"d|f| _|S )Nr   r   )r   rb   r=   r   r   )r?   rL   rM   r8   r$   r$   r%   
chunk_PLTE  s    

zPngStream.chunk_PLTEc             C   s   t | j|}| jdkrLt|r@|d}|dkrJ|| jd< q|| jd< nD| jdkrft|| jd< n*| jdkrt|t|dt|df| jd< |S )	Nr   ru   r   transparency)r   r   r   r   r   r   )	r   rb   r=   r   _simple_palettematchr   r   i16)r?   rL   rM   r8   r   r$   r$   r%   
chunk_tRNS  s    




 zPngStream.chunk_tRNSc             C   s$   t | j|}t|d | jd< |S )Ng     j@Zgamma)r   rb   r=   rF   r   )r?   rL   rM   r8   r$   r$   r%   
chunk_gAMA  s    zPngStream.chunk_gAMAc             C   sB   t | j|}tdt|d  |}tdd |D | jd< |S )Nz>%dIr   c             s   s   | ]}|d  V  qdS )g     j@Nr$   ).0Zeltr$   r$   r%   	<genexpr>  s    z'PngStream.chunk_cHRM.<locals>.<genexpr>Zchromaticity)r   rb   r=   r]   Zunpackr.   ro   r   )r?   rL   rM   r8   Zraw_valsr$   r$   r%   
chunk_cHRM  s    zPngStream.chunk_cHRMc             C   s    t | j|}|d | jd< |S )Nr   Zsrgb)r   rb   r=   r   )r?   rL   rM   r8   r$   r$   r%   
chunk_sRGB  s    zPngStream.chunk_sRGBc             C   s   t | j|}|dk r(t jr |S tdt|dt|d }}|d }|dkrj|d |d f}|| jd< n|dkr||f| jd	< |S )
Nr   zTruncated pHYs chunkr   r   r   r   g
F%u?dpiZaspect)r   rb   r=   rH   r7   rF   r   )r?   rL   rM   r8   pxpyZunitr   r$   r$   r%   
chunk_pHYs  s    zPngStream.chunk_pHYsc             C   s   t | j|}y|dd\}}W n tk
r>   |}d}Y nX |r|dd}|dd}|dkrh|n|| j|< || j|< | t	| |S )Nru   r       zlatin-1rt   replaceexif)
r   rb   r=   splitr7   rY   r   r   r   r.   )r?   rL   rM   r8   kvZv_strr$   r$   r%   
chunk_tEXt  s    

zPngStream.chunk_tEXtc             C   s   t | j|}y|dd\}}W n tk
r>   |}d}Y nX |rN|d }nd}|dkrjtd| dyt|dd  }W n: tk
r   t jrd}n Y n tj	k
r   d}Y nX |r|
dd}|
dd	}| | j|< | j|< | t| |S )
Nru   r   r   r   zUnknown compression method z in zTXt chunkzlatin-1rt   r   )r   rb   r=   r   r7   rI   r9   rH   r5   r^   rY   r   r   r   r.   )r?   rL   rM   r8   r   r   r   r$   r$   r%   
chunk_zTXt(  s2    


zPngStream.chunk_zTXtc             C   sj  t | j| }}y|dd\}}W n tk
r:   |S X t|dk rL|S |d |d |dd    }}}y|dd\}}	}
W n tk
r   |S X |dkr|dkryt|
}
W q tk
r   t jr|S  Y q tj	k
r   |S X n|S y4|
dd}|
dd}|	
dd}	|

dd}
W n tk
r:   |S X t|
||	 | j|< | j|< | t|
 |S )Nru   r   r   r   zlatin-1rt   zutf-8)r   rb   r=   r   r7   r.   r9   rH   r5   r^   rY   r~   rd   r   r   r   )r?   rL   rM   rr8   r   Zcfcmrg   Ztkr   r$   r$   r%   
chunk_iTXtJ  sB     zPngStream.chunk_iTXtc             C   s    t | j|}d| | jd< |S )Ns   Exif  r   )r   rb   r=   r   )r?   rL   rM   r8   r$   r$   r%   
chunk_eXIfs  s    zPngStream.chunk_eXIfc             C   s   t | j|}|dk r(t jr |S td| jd k	rFd | _td |S t|}|dks^|dkrltd |S || _t|d| j	d< d| _
|S )	Nr   z"APNG contains truncated acTL chunkz4Invalid APNG, will use default PNG image if possibler   l        r   loopz
image/apng)r   rb   r=   rH   r7   r   warningswarnrF   r   r   )r?   rL   rM   r8   n_framesr$   r$   r%   
chunk_acTLy  s"    


zPngStream.chunk_acTLc             C   s6  t | j|}|dk r(t jr |S tdt|}| jd krB|dksZ| jd k	rb| j|d krbtd|| _t|dt|d }}t|dt|d	 }}| j\}	}
|| |	ks|| |
krtd
|||| || f| j	d< t
|dt
|d }}|dk rd}t|t| d | j	d< |d | j	d< |d | j	d< |S )N   z"APNG contains truncated fcTL chunkr   r   z#APNG contains frame sequence errorsr   r   r   r   zAPNG contains invalid framesr         d   i  duration   disposal   blend)r   rb   r=   rH   r7   rF   r   rI   r   r   r   float)r?   rL   rM   r8   seqwidthZheightr   r   Zim_wZim_hZ	delay_numZ	delay_denr$   r$   r%   
chunk_fcTL  s.    

zPngStream.chunk_fcTLc             C   sn   |dk r(t jr t | j|}|S tdt | jd}t|}| j|d krTtd|| _| |d |d S )Nr   z"APNG contains truncated fDAT chunkr   z#APNG contains frame sequence errors)	r   rH   rb   r=   r7   rF   r   rI   r   )r?   rL   rM   r8   r   r$   r$   r%   
chunk_fdAT  s    zPngStream.chunk_fdAT)r   r   r    r@   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   r   __classcell__r$   r$   )r   r%   r   f  s*   	")r   c             C   s   | d d t kS )Nr   )_MAGIC)r3   r$   r$   r%   _accept  s    r   c                   s   e Zd ZdZdZdd Zedd Zdd Zd	d
 Z	dddZ
dd Zdd Zdd Zdd Zdd Z fddZdd Z  ZS )PngImageFileZPNGzPortable network graphicsc          	   C   s  t | jdstd| j| _d| _g | _t| j| _x| j \}}}y| j	|||}W nf t
k
rt   P Y nR tk
r   td||| t| j|}|dd  r| j||f Y nX | j|| q:W | jj| _| jj| _| jj| _d | _| jj| _| jj| _| jjpd| _| j dd| _!| jj"rT| jj"\}}t#$||| _%|d	krj|d
 | _&n|| _&| jjd k	rd| _'| j(  | j&| _)| j* | _+| j!r|  jd7  _| ,d | jdk| _-d S )Nr   znot a PNG filer   z%r %s %s (unknown)r   r   r   Fs   fdATr   ).r   r=   rD   rI   _fp_PngImageFile__frameprivate_chunksr   pngrZ   r   r0   rV   rW   r   rb   islowerrS   rR   r   moder   Z_sizer   r   _textr   r   r   Zcustom_mimetyper   r   getr   r   r   rawpalette_PngImageFile__prepare_idatZ!_close_exclusive_fp_after_loadingr   _PngImageFile__rewind_idatrE   _PngImageFile__rewind_seekis_animated)r?   rK   rL   rM   r8   rawmoder:   r$   r$   r%   _open  sR    	








zPngImageFile._openc             C   sD   | j d kr>| jr&| j}| | jd  |   | jr>| | | j S )Nr   )r   r   r   rC   r   load)r?   framer$   r$   r%   rj   	  s    

zPngImageFile.textc             C   sZ   | j dkrtd| j | jd d d  | j  | j  | jrP| j   d| _ dS )zVerify PNG fileNz)verify must be called directly after openr   r   r   )r=   RuntimeErrorrC   r   r   rc   rO   Z_exclusive_fp)r?   r$   r$   r%   rc     s    



zPngImageFile.verifyc             C   s   |  |sd S || jk r$| dd | j}xbt| jd |d D ]J}y| | W q@ tk
r } z| | td|W d d }~X Y q@X q@W d S )Nr   Tr   zno more images in APNG file)Z_seek_checkr   r   ranger   rC   )r?   r   Z
last_framefr_   r$   r$   r%   rC   (  s    


zPngImageFile.seekFc          	   C   s  |dkr|rZ| j | j | j  | j| _d | _| jr>d | _| jj	| _
| jj| _| j | _d | _d | _| j
dd| _| j
d| _| j
d| _| j
d| _d| _n|| jd krtd| |   | jr| j| j| j | j | _| j | _| jrt| j| j d| _d}x| jd	 y| j \}}}W n tjtfk
r^   P Y nX |d
krrt d|dkr|rtdd}y| j!||| W n t"k
r   P Y nv t k
r   |dkr|d	8 }|r|| _P t| j| Y n4 t#k
r.   t$%d||| t| j| Y nX q W || _| jj| _| j
d| _| j
d| _| j
d| _| js|t | jd kr| jt&j'krt&j(| _| jt&j'kr| j | _| )| j| j| _n<| jt&j(krt*j+,| j-| j.| _| )| j| j| _nd | _d S )Nr   r   Fr   r   r   r   zcannot seek to frame r   s   IENDzNo more images in APNG files   fcTLzAPNG missing frame dataTs   fdATz%r %s %s (unknown))/r   rC   r   r   r   r   r   impyaccessr   r   r   r   r=   _prev_imdisposer   r   Z
dispose_opblend_opdispose_extentr   r7   r   paster   r   rb   rD   r]   r^   rI   r   rZ   UnicodeDecodeErrorr0   rV   rW   r   r#   r"   _cropr   corefillr   size)r?   r   r   Zframe_startrK   rL   rM   r$   r$   r%   r   6  s    







zPngImageFile._seekc             C   s   | j S )N)r   )r?   r$   r$   r%   rE     s    zPngImageFile.tellc             C   s0   | j dr| jd | _| j| _tj|  dS )z"internal: prepare to read PNG filer   )r   N)r   r   Zdecoderconfigr   _PngImageFile__idatr   load_prepare)r?   r$   r$   r%   r     s    zPngImageFile.load_preparec             C   s   x| j dkr| jd | j \}}}|dkrD| j||| dS |dkry| j||| W n tk
rt   Y nX |d | _ q|| _ qW |dkr| j }nt|| j }| j | | _ | j|S )zinternal: read more image datar   r   )s   IDATs   DDATs   fdATr   s   fdAT)r   r=   rD   r   rT   rZ   r   min)r?   Z
read_bytesrK   rL   rM   r$   r$   r%   	load_read  s$    
zPngImageFile.load_readc          	   C   s  | j dkr| j| j  x&| jd y| j \}}}W n tjtfk
rX   P Y nX |dkrfP n&|dkr| jrd| _| j	||| P y| j
||| W q tk
r   P Y q tk
r   |dkr|d8 }t| j| Y q tk
r<   td||| t| j|}|dd  r8| j||d	f Y qX qW | jj| _| jsf| j  d
| _nT| jr| jtjkr| | j| j}| j|| j| d | j| _| j!rd
| _!d
S )z%internal: finished reading image datar   r   s   IENDs   fcTLs   fdATz%r %s %s (unknown)r   r   TNr   )"r   r=   rD   r   r]   r^   rI   r   r   rT   rZ   r   r   r   rb   r0   rV   rW   r   r   rS   r   r   rO   r   r   r&   r(   r   r   r   r   convertr   )r?   rK   rL   rM   r8   updatedr$   r$   r%   load_end  sL    


zPngImageFile.load_endc             C   s6   d| j kr|   d| j kr*d| j kr*d S |   S )Nr   zRaw profile type exif)r   r   getexifZ_get_merged_dict)r?   r$   r$   r%   _getexif  s
    
zPngImageFile._getexifc                s   d| j kr|   t  S )Nr   )r   r   r   r  )r?   )r   r$   r%   r    s    
zPngImageFile.getexifc             C   s   d| j kr| | j d S i S )z
        Returns a dictionary containing the XMP tags.
        Requires defusedxml to be installed.

        :returns: XMP tags in a dictionary.
        zXML:com.adobe.xmp)r   Z_getxmp)r?   r$   r$   r%   getxmp  s    	zPngImageFile.getxmp)F)r   r   r    formatZformat_descriptionr   propertyrj   rc   rC   r   rE   r   r   r  r  r  r  r   r$   r$   )r   r%   r     s   D
Z	!/r   )r   s    )zL;1s    )zL;2s    )zL;4s    )r   s    )r   s   )zI;16Bs    )zP;1s   )zP;2s   )zP;4s   )r   s   )r   s   )r   s   )r   zL;1zL;2zL;4r   r   r   zI;16zP;1zP;2zP;4r   r   r   c             G   sJ   d |}| tt||  | | t|t|}| t| dS )z'Write a PNG chunk (including CRC field)r   N)joinwriteo32r.   r;   )r=   rK   r:   rR   r$   r$   r%   putchunk  s
    

r  c               @   s   e Zd Zdd Zdd ZdS )_idatc             C   s   || _ || _d S )N)r=   rq   )r?   r=   rq   r$   r$   r%   r@   +  s    z_idat.__init__c             C   s   |  | jd| d S )Ns   IDAT)rq   r=   )r?   r:   r$   r$   r%   r
  /  s    z_idat.writeN)r   r   r    r@   r
  r$   r$   r$   r%   r  (  s   r  c               @   s   e Zd Zdd Zdd ZdS )_fdatc             C   s   || _ || _|| _d S )N)r=   rq   r   )r?   r=   rq   r   r$   r$   r%   r@   6  s    z_fdat.__init__c             C   s*   |  | jdt| j| |  jd7  _d S )Ns   fdATr   )rq   r=   r  r   )r?   r:   r$   r$   r%   r
  ;  s    z_fdat.writeN)r   r   r    r@   r
  r$   r$   r$   r%   r  3  s   r  c             C   s`  | j d| jd}| j d| jdd}| j d| jdd}| j d| jdtj}| j d| jdtj}|rt| j dg }	nt| g| j dg }	g }
d}x|	D ]}xt	
|D ]}| }|j| jkr| jdkr|j| j| jd	}n|| j}| j  }t|ttfr>|| |d< t|ttfrZ|| |d< t|ttfrv|| |d< |d
7 }|
r|
d }|d d}|d d}|tjkrt|
dk rtj}|tjkr |d }tjd| jd}|d }|r||}n
d| j }||| n"|tjkr:|
d d }n|d }t|d|d}| }|s||dkr||dkrt|ttfr|d d  |d 7  < qnd }|
|||d qW qW ||dtt|
t| |rt !| t"||dd| j d|fg d}x@t#|
D ]2\}}|d }|d sLd|j }n|d }||}|j}|d }t$t%|d|}|d|}|d|}||dt|t|d t|d
 t|d t|d
 t&|t&dt'|t'| |d
7 }|dkr&|s&t !|t"||dd|j d|fg n0t(|||}t !||dd|j d|fg |j)}q$W d S )Nr   r   r   r   r   r   Zappend_imagesr   )r   r   encoderinfor   r   r   )r   r   r   r   r   )r   r   r   )r   r   r  s   acTLr|   s   fcTLi  )*r  r   r   r   r!   r&   r'   	itertoolschainr   Iteratorr   r   r  r   rv   listro   r#   r.   r"   r   r   r   r   Zcropr   r   Zsubtract_moduloZgetbboxrS   r  r   _saver  	enumerateintroundo16r   r  r   )r   r=   rq   r   r   r   r   r   r   r  Z	im_framesZframe_countZim_seqZim_framer  ZpreviousZprev_disposalZ
prev_blendZbase_imr   r   Zdeltar   r   Z
frame_datar   Zframe_durationZframe_disposalZframe_blendZfdat_chunksr$   r$   r%   _write_multiple_frames@  s    



$






r  c             C   s   t | ||dd d S )NT)save_all)r  )r   r=   filenamer$   r$   r%   	_save_all  s    r  Fc          
   C   s  | j }|dkrd| jkr.td| jd > d}n.| jrXttt| j d d dd}nd}|dkr|dkrrd}n|dkrd}nd}| d	| }| jd
d| jdd| jdd| jddf| _yt	| \}}W n6 t
k
r }	 ztd| d|	W d d }	~	X Y nX |t ||dt| jd t| jd |ddd dddddg}
| jd| jd}|rd}|d t| }||d| |
d | jd}|rDd d!d"d#g}x|jD ]}|d d \}}||
kr|
| |||| nH||kr|||| n0|dd  r|dd }|s|||| qW | j dkr|d }| jd$d | }xt||k r|d7 }qnW ||d%| | jd&| jd&d }|s|dkr| j dkr"|}t|tr||d'|d |  n0tdtd(|}d)| d }||d'|d |  nz| j d*krPtdtd+|}||d't| nL| j d$kr|\}}}||d't|t| t|  nd&| jkrtd,nB| j dkr| j d-kr| jd-d.}|}||d'|d |  | jd/}|r*||d0tt|d d1 d2 tt|d d1 d2 d3 |rzd4d5g}
x@|jD ]6}|d d \}}||
kr@|
| |||| q@W | jd6| jd6}|rt|tjr|d7}| d8r|d9d  }||d:| |rt!| ||| n$t"#| t$||d;d<| j d|fg |rdxP|jD ]F}|d d \}}|dd  r|dd }|r|||| qW ||d=d t%|d>r|&  d S )?Nr   bitsr      r   r   r   r   ;optimizeFZcompress_levelr  Zcompress_typeZ
dictionaryr   zcannot write mode z as PNGs   IHDRr   ru   s   cHRMs   gAMAs   sBITs   sRGBs   tIMEr   s   ICC Profiles     s   iCCPZpnginfos   sPLTs   iTXts   tEXts   zTXtr   s   PLTEr   s   tRNS      )r   r   r   i  z%cannot use transparency for this moder   Ar   s   pHYsg
F%u?g      ?   s   bKGDs   hISTr   r   s   Exif  r   s   eXIfr|   )r   r   s   IENDflush)'r   r  r   r   maxr.   Zgetdatar   Zencoderconfig	_OUTMODESKeyErrorra   r
  r   r  r   r   r5   ry   removern   r   r   Z
getpaletterv   rw   r  Zgetpalettemoder  r   ZExiftobytesr-   r  r   r  r  hasattrr'  )r   r=   r  rq   r  r   Zcolorsr  r   r_   rn   Ziccr1   r:   r   Zchunks_multiple_allowedZ
info_chunkrK   rp   Zpalette_byte_numberZpalette_bytesr   Zalpha_bytesZalphaZredZgreenZbluer   r   r$   r$   r%   r    s    
$$





"



$r  c             K   sB   G dd d}dd }| }z|| _ t| |d| W d| ` X |jS )z4Return a list of PNG chunks representing this image.c               @   s    e Zd Zg Zdd Zdd ZdS )zgetchunks.<locals>.collectorc             S   s   d S )Nr$   )r?   r:   r$   r$   r%   r
  y  s    z"getchunks.<locals>.collector.writec             S   s   | j | d S )N)r:   rS   )r?   rq   r$   r$   r%   rS   |  s    z#getchunks.<locals>.collector.appendN)r   r   r    r:   r
  rS   r$   r$   r$   r%   	collectorv  s   r.  c             W   s0   d |}tt|t|}| |||f d S )Nr   )r	  r  r;   rS   )r=   rK   r:   rR   r$   r$   r%   rS     s    
zgetchunks.<locals>.appendN)r  r  r:   )r   Zparamsr.  rS   r=   r$   r$   r%   	getchunkss  s    	r/  z.pngz.apngz	image/png)r   )@r  Zloggingrer]   r   r5   r2   r   rs   r   r   r   r   r   Z_binaryr	   r   r
   rF   r   r   r  r   r  Z
_deprecater   Z	getLoggerr   rV   compiler   rG   r   r   r   Z	SAFEBLOCKr6   r   r   r&   r4   r9   r;   r<   re   rd   rm   r   r   r   r)  r  r  r  r  r  r  r/  Zregister_openr  Zregister_saveZregister_save_allZregister_extensionsZregister_mimer$   r$   r$   r%   <module>"   s   



\T  T  N} 3