OwlCyberSecurity - MANAGER
Edit File: GifImagePlugin.cpython-38.pyc
U tCfoq � @ sZ d dl Z d dlZd dlZddlmZmZmZmZmZ ddl m Z m Z m Z mZ dd� ZG dd� dej�Zd d d d �Zd4d d�Zdd� Zdd� Zdd� Zdd� Zd5dd�Zdd� Zdd � Zd d � Zd Z d d � Z d!d"� Z d#d$� Z d%d&� Z d'd(� Z!d)d*� Z"d+d,� Z#d6d-d.�Z$d7d0d1�Z%e�&ej'ee� e�(ej'e� e�)ej'e� e�*ej'd2� e�+ej'd3� dS )8� N� )�Image� ImageChops� ImageFile� ImagePalette� ImageSequence)�i8�i16le�o8�o16lec C s | d d� dkS )N� �s GIF87as GIF89a� )�prefixr r �4/usr/lib/python3/dist-packages/PIL/GifImagePlugin.py�_accept& s r c @ sl e Zd ZdZdZdZdZdd� Zdd� Ze d d � �Z e d d � �Z d d� Z dd� Z dd� Zdd� Zdd� ZdS )� GifImageFileZGIFzCompuserve GIFFNc C s, | j �d�}|r(t|�r(| j �t|��S d S �Nr )�fp�readr )�self�sr r r �data7 s zGifImageFile.datac C sH | j �d�}|d d� dkr$td��|d d� | jd< t|dd � �t|dd � �f| _g | _t|d �}|d@ d }|d @ �rt|d �| jd < | j �d |> �}tdt |�d �D ]f}|d t|| � kr�t||d � kr�t||d �ks�n t � d|�}| | _ | _ �qq�| j | _| j �� | _d | _d | _| �d� d S )N� r r znot a GIF file�version� � � r � � � background� r � �RGB)r r � SyntaxError�info�i16�_size�tiler �range�lenr �raw�global_palette�palette�_GifImageFile__fp�tell�_GifImageFile__rewind� _n_frames� _is_animated�_seek)r r �flags�bits�p�ir r r �_open= s* " D zGifImageFile._openc C s^ | j d krX| �� }z| �| �� d � qW n" tk rL | �� d | _ Y nX | �|� | j S r )r1 r/ �seek�EOFError�r Zcurrentr r r �n_frames[ s zGifImageFile.n_framesc C sj | j d krd| jd k r"| jdk| _ nB| �� }z| �d� d| _ W n tk rX d| _ Y nX | �|� | j S )Nr TF)r2 r1 r/ r9 r: r; r r r � is_animatedg s zGifImageFile.is_animatedc C s� | � |�sd S || jk r0|dkr&d | _| �d� | j}t| jd |d �D ]:}z| �|� W qJ tk r� | �|� td��Y qJX qJd S )Nr r zno more images in GIF file)Z _seek_check�_GifImageFile__frame�imr3 r) r: r9 )r �frameZ last_frame�fr r r r9 x s zGifImageFile.seekc C s� |dkrDd| _ d | _ddddg| _d| _| j�| j� d | _d| _n| j sR| � � || jd krlt d| ��g | _ | j| _ | j r�| j �| j � | �� r�q�d| _ | jr�| j �| j| j� ddlm} || j�| _i }d }| j �d�}|r�|dkr�q�q�|dk�r@| j �d�}| �� }t|�dk�r|t|d �}|d@ �rFt|d �|d < t|dd � �d |d < d |@ }|d? }|�r0|| _n�t|�dk�r�|r�d|k�r�|d |7 < n||d< | �� }�q�q�nnt|�dk�r0|| j �� f|d< |d d� dk�r0| �� }t|�d k�r0t|d �dk�r0t|dd � �|d< | �� �r��q0q�|dkr�| j �d�}t|dd � �t|dd � � } } | t|dd � � | t|dd � � } } | | jd k�s�| | jd k�r�t| | jd �t| | jd �f| _t� | j� | | | | f| _t|d �}|d@ dk}|d @ �rD|d @ d } t � d | j �d | > ��| _t| j �d��} | j �� | _ d | | | | f| j | |ffg| _ �q�q�q�|d k�r�t �|| _zz| jdk �r�d | _nH| jdk�r�t� | j� tj �!d | j| j"d! �| _n| j �r�| j �� | _| j�r| �#| j| j�| _W n t$t%fk �r. Y nX | j �s<t �d"D ]4}||k�r^|| | j"|< n|| j"k�r@| j"|= �q@d#| _&| j�r�d | _&d S )$Nr ���r zcannot seek to frame %d)�copy� ;� !� r! � transparencyr �duration� r" � �comment� � extensionr � NETSCAPE2.0�loop� ,� � r r �@ r r r# �gif�Pr )rG rH rK rM rO �L)'Z_GifImageFile__offsetZdispose�dispose_extentr> r. r9 r0 �_prev_im�disposal_methodr? �load� ValueErrorr( r r �pasterC r, r- r r r& r/ r* �size�maxr' r Z_decompression_bomb_checkr r+ r: ZcoreZfillr% �_crop�AttributeError�KeyError�mode)r r@ rC r% � interlacer �blockr4 Z dispose_bitsZx0Zy0Zx1Zy1r5 �kr r r r3 � s� "* " � zGifImageFile._seekc C s | j S �N)r> �r r r r r/ * s zGifImageFile.tellc C s\ t j �| � | jrL| jdkrL| �| j| j�}| j�|| j|�d�� | j| _| j� � | _d S )Nr ZRGBA) r �load_endrX rY r_ r? rW r\ �convertrC )r �updatedr r r rh - s zGifImageFile.load_endc C sB z4z| j | jkr| j �� W n tk r0 Y nX W 5 d | _ X d S rf )r. r �closer` rg r r r � _close__fp: s zGifImageFile._close__fp)�__name__� __module__� __qualname__�formatZformat_descriptionZ!_close_exclusive_fp_after_loadingr, r r8 �propertyr< r= r9 r3 r/ rh rl r r r r r / s # r rV rU )�1rV rU Fc C sp | j tkr| �� | S t�| j �dkrf|r\d}| jrJt| j�� d �d }| jdtj |d�S | �d�S | �d�S )a Takes an image (or frame), returns an image in a mode that is appropriate for saving in a Gif. It may return the original image, or it may return an image converted to palette or 'L' mode. UNDONE: What is the point of mucking with the initial call palette, for an image that shouldn't have a palette, or it would be a mode 'P' and get returned in the RAWMODE clause. :param im: Image object :param initial_call: Default false, set to true for a single frame. :returns: Image object r# � r r! rU )r- ZcolorsrV ) rb �RAWMODErZ r Z getmodebaser- r* �getdatari ZADAPTIVE)r? Z initial_callZ palette_sizer r r �_normalize_modeK s rv c C s� d}|rjt |tttf�r(t|dd� �}t |tj�rjttj�t|j dd� |j dd� |j dd� ���}| j dkr�|s�| j � d�dd� }n*|s�tdd� t d�D ��}tjd|d �| _ t| |�}|dk r�| �||�S || j _ | S ) at Normalizes the palette for image. - Sets the palette to the incoming palette, if provided. - Ensures that there's a palette for L mode images - Optimizes the palette if necessary/desired. :param im: Image object :param palette: bytes object containing the source palette, or .... :param info: encoderinfo :returns: Image object Ni rs i rU r# c s s | ]}|d V qdS )r! Nr )�.0r7 r r r � <genexpr>� s z%_normalize_palette.<locals>.<genexpr>�r- )� isinstance�bytes� bytearray�listr � itertools�chain� from_iterable�zipr- rb r? Z getpaletter) � _get_optimizeZ remap_palette)r? r- r% Zsource_palette�used_palette_colorsr r r �_normalize_palettei s2 ��� r� c C s� t | d�}|j�� D ]\}}| j�||� qt||| j�}t|| j�D ]}|�|� qFd}t| �rj|dB }t || d|� dt| �f|_ t � ||dd| j dt|j fg� |�d� d S )NTr rS �r r r rT � )rv r% �items� encoderinfo� setdefaultr� �_get_global_header�write� get_interlace�_write_local_headerZ encoderconfigr �_saver] rt rb )r? r r- Zim_outre �vr r4 r r r �_write_single_frame� s $r� c C s� | j �d| j�d��}| j �d| j�d��}g }d}d }t�| g| j �dg ��D �]�}t�|�D �]�} t| �� �} |dkr�| j� � D ]\} } | j � | | � q�t | || j �} | j �� } t |t tf�r�|| | d< t |t tf�r�|| | d< |d7 }|�r�|d } | �d�dk�r^|d k�rXt| | j �d| j�d���}t�d | j|�}|�|d d j� |}n| d }t| �t|�k�r�t�| |�}nt�| �d �|�d ��}|�� }|�s�|r`| d d | d 7 < q`nd }|�| || d �� q`qPt|�dk�rx|D ]z}|d } |d �s4t | |d �D ]}|� |� �q d}n*d|d d< | � |d �} |d d d� }t || ||d � �q�dS d| j k�r�t | j d t tf��r�t | j d �| j d< d S )NrH �disposalr Z append_imagesr rB r" r rU r? r# r� )r? �bboxr� r� r� T�include_color_table)!r� �getr% r~ r r �Iteratorrv rC r� r� r� rz r} �tuple�_get_backgroundr �newr] Z putpaletter- �_get_palette_bytesr Zsubtract_modulori Zgetbbox�appendr* r� r� Zcrop�_write_frame_data�sum)r? r r- rH r� Z im_framesZ frame_countZ background_imZ imSequence�im_framere r� r� Zpreviousr Zbase_imZdeltar� Z frame_datar �offsetr r r �_write_multiple_frames� sx � � �r� c C s t | ||dd� d S )NT)�save_all)r� )r? r �filenamer r r � _save_all� s r� c C s� d| j ksd| jkr,| j �d| j�d��}nd }| j �dd�| j d< |rTt| ||�s`t| ||� |�d� t|d�r||�� d S )Nr- �optimizeTrD �flush)r� r% r� r� r� r� �hasattrr� )r? r r� r� r- r r r r� � s r� c C s$ | j �dd�}t| j�dk r d}|S )Nrc r � r )r� r� �minr] )r? rc r r r r� s r� c C s� d}z|j d }W n tk r& Y nJX t|�}d}t||j �}|d k rpz|�|�}W n tk rn d}Y nX d|j kr�t|j d d �}nd}t|j �dd��}|s�|dks�|�r|r�dnd} | |d > O } |s�d}| �d td � td � t| � t |� t|� td� � d |j k�r�dt |j d �k�r�| �d td� � |j d } t | t ��r`| � � } tdt | �d�D ],} | | | d � } | �tt | ��| � �qp| �td�� d|j k�r |j d } | �d td� td� d td� td� t | � td� � |j �d�}|�r8t|�}t|�}|�r8|dB }||B }| �dt |d � t |d � t |jd � t |jd � t|� � |�r�|�r�| �t|�� | �td�� d S )NFrG TrH r r r� r r" rE rF rR rK rJ rL rO r rN r! r� r rP r )r� ra �intr� �indexr[ r� r� r �o16r* rz �str�encoder) r� �_get_color_table_sizer] �_get_header_palette)r r? r� r4 Ztransparent_color_existsrG r� rH r� Z packed_flagrK r7 ZsubblockZnumber_of_loopsr� � palette_bytes�color_table_sizer r r r� s� ������� �������� � � � ��� r� c C s� | � � }z�t|d���}| jdkr8tjd|g|tjd� ntdd|g}dg}tj |tj tjd�}tj ||j |tjd�}|j � � |� � } | r�t�| |��|� � } | r�t�| |��W 5 Q R X W 5 zt�|� W n tk r� Y nX X d S )N�wbr# Zppmtogif)�stdout�stderrZppmquantZ256)�stdinr� r� )Z_dump�os�unlink�OSError�openrb � subprocessZ check_callZDEVNULL�Popen�PIPEr� rk �waitZCalledProcessError) r? r r� ZtempfilerA Z quant_cmdZ togif_cmdZ quant_procZ togif_procZretcoder r r � _save_netpbmj sB � �� r� c C s� | j dkr�|r�|�dd�r�tp&| j dk}|s<| j| j dk r�g }t| �� �D ]\}}|rL|�|� qL|s�t|�dkr�t |�t|�kr�|S dS )aL Palette optimization is a potentially expensive operation. This function determines if the palette should be optimized using some heuristics, then returns the list of palette entries in use. :param im: Image object :param info: encoderinfo :returns: list of indexes of palette entries in use, or None )rU rV r� r rV i r N) rb r� �_FORCE_OPTIMIZE�widthZheight� enumerateZ histogramr� r* r^ )r? r% Zoptimiser� r7 �countr r r r� � s ��r� c C sF dd l }| sdS t| �dk r dS t|�|�t| �d d���d S d S )Nr rQ r r! r" )�mathr* r� Zceil�log)r� r� r r r r� � s r� c C s< t | �}d|> t| �d }|dkr8| td�d | 7 } | S )z� Returns the palette, null padded to the next power of 2 (*3) bytes suitable for direct inclusion in the GIF header :param palette_bytes: Unpadded palette bytes, in RGBRGB form :returns: Null padded palette r" r! r )r� r* r )r� r� Zactual_target_size_diffr r r r� � s r� c C s | j j S )z� Gets the palette for inclusion in the gif header :param im: Image object :returns: Bytes, len<=768 suitable for inclusion in gif header ry )r? r r r r� � s r� c C s& d}|r"|}t |t�r"| j�|�}|S )Nr )rz r� r- Zgetcolor)r? ZinfoBackgroundr r r r r� � s r� c C s� d}dD ]T}|r||kr|dkr,|| dks|dkrTdt || � krPdksTq qd} qrq| j�d �dkrrd}t| |�d ��}t| �}t|�}d | t| jd � t| jd � t|d �t|�td� t |�gS ) z2Return a list of strings representing a GIF headers 87a)rG rH rO rK rH r rK r rL s 89ar r s GIFr ) r* r% r� r� r� r� r� r] r r� )r? r% r Z extensionKeyr r� r� r r r r� � s< � ��� � � �r� c C sR zF||_ t| ||d� t�|| dd|j dt|j fg� | �d� W 5 |` X d S )Nr rT r� r� )r� r� r r� r] rt rb r� )r r� r� �paramsr r r r� s �r� c C sd t | |�}|dkri }d|kr6d| jkr6| jd |d< t| ||�}|j| _|j| _t| |�}||fS )a Legacy Method to get Gif data from image. Warning:: May modify image data. :param im: Image object :param palette: bytes object containing the source palette, or .... :param info: encoderinfo :returns: tuple of(list of header items, optimized palette) Nr )r� r% r� r- r? r� )r? r- r% r� Zim_mod�headerr r r � getheader3 s r� r� c K s0 G dd� d�}| � � |� }t|| ||� |jS )a� Legacy Method Return a list of strings representing this image. The first string is a local image header, the rest contains encoded image data. :param im: Image object :param offset: Tuple of (x, y) pixels. Defaults to (0,0) :param \**params: E.g. duration or other encoder info parameters :returns: List of Bytes containing gif encoded frame data c @ s e Zd Zg Zdd� ZdS )zgetdata.<locals>.Collectorc S s | j �|� d S rf )r r� )r r r r r r� c s z getdata.<locals>.Collector.writeN)rm rn ro r r� r r r r � Collector` s r� )rZ r� r )r? r� r� r� r r r r ru Q s ru z.gifz image/gif)F)F)NN)r� ),r~ r� r� � r r r r r Z_binaryr r r& r r r� r r rt rv r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� ru Z register_openrp Z register_saveZregister_save_allZregister_extensionZ register_mimer r r r �<module> sB ,M T2% ' !