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GifImagePlugin.cpython-310.pyc
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o � f4� � @ sn d dl Z d dlZd dlZd dlZddlmZmZmZmZm Z ddl m Z ddl m Z ddl mZ dd� ZG d d � d ej�Zd d d d �Zd6dd�Zdd� Zdd� Zdd� Zdd� Zd6dd�Zdd � Zd d � Zd d � ZdZ d!d"� Z d#d$� Z d%d&� Z d'd(� Z d)d*� Z!d+d,� Z"d-d.� Z#d7d/d0�Z$d8d2d3�Z%e�&ej'ee� e�(ej'e� e�)ej'e� e�*ej'd4� e�+ej'd5� dS )9� N� )�Image� ImageChops� ImageFile� ImagePalette� ImageSequence)�i16le)�o8)�o16lec C s | d d� dv S )N� )s GIF87as GIF89a� )�prefixr r �4/usr/lib/python3/dist-packages/PIL/GifImagePlugin.py�_accept) � r c s| e Zd ZdZdZdZdZdd� Zdd� Ze d d � �Z e d d � �Z d d� Z dd� Z � fdd�Zdd� Zdd� Zdd� Z� ZS )� GifImageFile�GIFzCompuserve GIFFNc C s, | j �d�}|r|d r| j �|d �S d S )Nr r )�fp�read)�self�sr r r �data: s zGifImageFile.datac C s | j �d�}t|�std��|d d� | jd< t|d�t|d�f| _g | _|d }|d@ d }|d @ rw|d | jd < | j �d |> �}td t |�d �D ],}|d || krg||d krg||d ksvn t � d|�}| | _ | _ nqJ| j | _| j �� | _d | _d | _| �d � d S )N� znot a GIF filer �version� � � r � � � background� r � �RGB)r r r � SyntaxError�info�i16�_size�tile�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, 8 � zGifImageFile._openc C sZ | j d u r*| �� }z | �| �� d � q ty$ | �� d | _ Y nw | �|� | j S )NTr )r0 r. �seek�EOFError�r �currentr r r �n_frames^ s � � zGifImageFile.n_framesc C sl | j d u r3| jd ur| jdk| _ | j S | �� }z | �d� d| _ W n ty- d| _ Y nw | �|� | j S )Nr TF)r1 r0 r. r8 r9 r: r r r � is_animatedj s � � zGifImageFile.is_animatedc C s� | � |�sd S || jk rd | _| �d� | j}t| jd |d �D ] }z| �|� W q! ty@ } z | �|� td�|�d }~ww d S )Nr r zno more images in GIF file)� _seek_check�_GifImageFile__frame�imr2 r( r9 r8 )r �frame� last_frame�f�er r r r8 { s ���zGifImageFile.seekc s� |dkr d| _ d | _g d�| _d| _| j�| j� d| _n| jr$| � � || jd kr2t d|� ���g | _| j| _ | j rO| j �| j � | � � rL | � � sGd| _ d }i }d }d }d } | j � d�}|rf|dkrh�n|dkr�| j � d�}| � � }|d d kr�|d } | d@ r�|d }t|d�d |d < d | @ } | d? } | r�| | _nN|d dkr�|r�d|v r�|d |7 < n||d< | � � }|s�qY|d dkr�|| j �� f|d< |d d� dkr�| � � }t|�d kr�|d dkr�t|d�|d< | � � r� | � � s�n�|dk�ry| j � d�}t|d�t|d�} } | t|d� | t|d� } }| | jd k�s,|| jd k�rCt| | jd �t|| jd �f| _t�| j� | | | |f}|d } | d@ dk}| d @ �rj| d @ d }t�d | j � d |> ��}| j � d�d }| j �� | _ n qZ|d u �r�t�|| _| jdk�r�d | _d | jv �r�d | _| j � | jd d� | j � d tj �| _ | jd = n d | _| j � d tj �| _ | j�r�| j � | j| j� |�p�| j!� � fd!d"�}|| _z�| jdk �r�d | _nx| jdk�r&| j\} } } }| | || f}t�|� | j�"d |�}|d u�rd }||�d# }n d }|| j�"d$d��}tj#�$|||�| _n4| j �r4| �%| j | j�| _n&|d u�rZ| j\} } } }| | || f}t�|� tj#�$d |||�d# �| _W n t&�ye Y nw |d u�r�|dk�rz|d u�rz|| jd < d%| | | |f| j ||ffg| _nt�d&D ]}||v �r�|| | j|< �q�|| jv �r�| j|= �q�|dk�rЈ �r�d'nd(| _| jd'k�r�|�s�dd)l'm'} || j!�}|| _(d S � | _)|| _*d S )*Nr )r r r r ���r zcannot seek to frame T� ;� !� r r �duration� r! � �comment� � extensionr � NETSCAPE2.0�loop� ,� � r r �@ r r r" � transparency�RGBAc s4 � rt � j| d | d d � �} | S | | | f} | S )Nr )�tupler, )�color�� frame_paletter r �_rgb s �z GifImageFile._seek.<locals>._rgb)r r �gif)rI rL rN rP �P�L)�copy)+�_GifImageFile__offset�dispose�dispose_extentr? r- r8 r/ �disposal_methodr' �load� ValueErrorr r r r% r. r) �size�maxr& r �_decompression_bomb_checkr r* r9 �pyaccessr$ �moder@ �putpalettealpha�convert�FLOYDSTEINBERG�paster+ �get�core�fill�_crop�AttributeErrorr_ r, �_frame_palette�_frame_transparency)r rA r, r$ �frame_transparency� interlace�frame_dispose_extentr �blockr3 � dispose_bits�x0�y0�x1�y1r4 r[ � dispose_sizerX � dispose_mode�kr_ r rY r r2 � s" � � � �� " � S ��� �� � zGifImageFile._seekc s� | j dkrd| jv rtj�| j| j| jd �| _n*| j| _| j r=d| _tj�d| j| j p-d�| _| jj | j � � � d | _ nd| _d | _t � �� d S )Nr rU r] r^ )r? r$ r rp rq rj rf r@ �_prev_imrt ru � putpalette�getdata�super� load_prepare�r �� __class__r r r� d s ��zGifImageFile.load_preparec C s� | j dkrd S | jd ur| j�| jd� | j�d�}n| j�d�}| �|| j�}| j| _| jj| _|jdkrA| j� || j|� d S | j� || j� d S )Nr rV r" ) r? ru r@ rk rl rr rb r� rj rn )r �frame_imr r r �load_endw s zGifImageFile.load_endc C s | j S �N)r? r� r r r r. � s zGifImageFile.tellc C sP z#z | j | jkr | j �� W n ty Y nw W d | _ d S W d | _ d S d | _ w r� )r- r �closers r� r r r � _close__fp� s � �� �zGifImageFile._close__fp)�__name__� __module__� __qualname__�format�format_description�!_close_exclusive_fp_after_loadingr+ r r7 �propertyr< r= r8 r2 r� r� r. r� � __classcell__r r r� r r 2 s$ [r r^ r] )�1r^ r] Fc C s� | j tv r | �� | S t�| j �dkrV|rQd}| jr%t| j�� d �d }| jdtj |d�} | jj dkrO| jj � � D ]}|d dkrN| jj | | j d < | S q:| 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 r] )r, �colorsrV r rU r^ ) rj �RAWMODErd r � getmodebaser, r) r� rl �ADAPTIVEr� �keysr$ )r@ � initial_call� palette_size�rgbar r r �_normalize_mode� s& � r� c C sf d}|r t |tttf�rt|dd� �}t |tj�r t|j�}| jdkr1|s0| j�d�dd� }n|s>tdd� t d�D ��}tjd|d�| _|r�g }t dt |�d �D ]%}t |||d � �}z| jj | }W n t yq d}Y nw |�|� qRt|�D ]\}}|du r�t t |��D ] }||vr�|||< nq�q|| �|�} nt| |�}|dur�| �||�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 r] r" c s s � | ]}|d V qdS )r Nr )�.0r6 r r r � <genexpr>� s � z%_normalize_palette.<locals>.<genexpr>�r, r r )� isinstance�bytes� bytearray�listr r, rj r@ � getpaletter( r) rW r� �KeyError�append� enumerate� remap_palette� _get_optimize) r@ r, r$ �source_palette�used_palette_colorsr6 � source_color�index�jr r r �_normalize_palette� sJ � � �� r� c C s� t | d�}|j�� D ] \}}| j�||� q t||| j�}t|| j�D ]}|�|� q#d}t| �r5|dB }t || d|� dt| �f|_ t � ||dd| j dt|j fg� |�d� d S )NTr rT �r r r r\ � )r� r$ �items� encoderinfo� setdefaultr� �_get_global_header�write� get_interlace�_write_local_header� encoderconfigr �_saverf r� rj )r@ r r, �im_outr� �vr r3 r r r �_write_single_frame� s $r� c C s� | j �d| j�d��}| j �d| j�d��}g }d}d }t�| g| j �dg ��D ]�}t�|�D ]�} t| �� �} |dkrL| j� � D ] \} } | j � | | � q@t | || j �} | j �� } t |t tf�re|| | d< t |t tf�rr|| | d< |d7 }|r�|d } | �d�dkr�|d u r�| j �d| j�dd ��}t| |�}t�d | j|�}|�|d d j� |}n| d }t| �t|�kr�t�| |�}n t�| �d �|�d ��}|�� }|s�|r�| d d | d 7 < q/nd }|�| || d�� q/q(t|�dk�r:|D ]?}|d } |d �st | |d �D ]}|� |� �q d}n|�s d|d d< | � |d �} |d d d� }t || ||d � q�dS d| j v �rWt | j d t tf��rYt | j d �| j d< d S d S d S )NrI �disposalr � append_imagesr rE r! rU )r r r r] r@ r" r� )r@ �bboxr� r� r� T�include_color_table)!r� ro r$ � itertools�chainr �Iteratorr� r_ r� r� r� r� r� rW �_get_backgroundr �newrf r� r, �_get_palette_bytesr �subtract_modulorl �getbboxr� r) r� r� �crop�_write_frame_data�sum)r@ r r, rI r� � im_frames� frame_count� background_im� imSequence�im_framer� r� r� �previousrX r �base_im�deltar� � frame_datar �offsetr r r �_write_multiple_frames s| � ���- ��r� c C s t | ||dd� d S )NT)�save_all)r� )r@ r �filenamer r r � _save_allX s r� c C s� d| j v s d| jv r| j �d| j�d��}n d }| j �dd�| j d< |r*t| ||�s0t| ||� |�d� t|d�r@|�� d S d S )Nr, �optimizeTrF �flush)r� r$ ro r� r� r� �hasattrr� )r@ r r� r� r, r r r r� \ s �r� c C s$ | j �dd�}t| j�dk rd}|S )Nrw r � r )r� ro �minrf )r@ rw r r r r� m s r� c C s� d}z|j d }W n ty Y n$w t|�}d}t||j �}|d ur6z|�|�}W n ty5 d}Y nw d|j v rEt|j d d �}nd}t|j �dd��}|sX|dksX|r�|r\dnd} | |d > O } |shd}| �d td � td � t| � t |� t|� td� � d |j v r�dt |j d �kr�| �d td� � |j d } t | t �r�| � � } tdt | �d�D ]} | | | d � } | �tt | ��| � q�| �td�� d|j v r�|j d } | �d td� td� d td� td� t | � td� � |j �d�}|�rt|�}t|�}|�r|dB }||B }| �dt |d � t |d � t |jd � t |jd � t|� � |�rD|�rD| �t|�� | �td�� d S )NFrU TrI r r r� r r! rG rH rS rL rK rM rP r rO r r� r rQ r )r� r� �intr� r� re ro r� r �o16r) r� �str�encoder( r� �_get_color_table_sizerf �_get_header_palette)r r@ r� r3 �transparent_color_existsrU r� rI r� � packed_flagrL r6 �subblock�number_of_loopsr� � palette_bytes�color_table_sizer r r r� w s� � � ������� �������� � � � ��� r� c C s | � � }ztt|d��S}| jdkr tjd|g|tjd� n:dd|g}dg}tj|tjtjd�}tj||j|tjd�}|j� � |� � } | rJt� | |��|� � } | rVt� | |��W d � n1 s`w Y W zt � |� W d S tyx Y d S w zt � |� W w ty� Y w w )N�wbr" �ppmtogif)�stdout�stderr�ppmquant�256)�stdinr� r� )�_dump�openrj � subprocess� check_call�DEVNULL�Popen�PIPEr� r� �wait�CalledProcessError�os�unlink�OSError) r@ r r� �tempfilerC � quant_cmd� togif_cmd� quant_proc� togif_proc�retcoder r r � _save_netpbm� sL � �� � �� �� �r c C s� | j dv rD|rF|�dd�rHtp| j dk}|s | j| j dk rJg }t| �� �D ] \}}|r1|�|� q&|sBt|�dkrLt |�t|�krN|S dS dS dS dS dS dS )aL Palette optimization is a potentially expensive operation. This function determines if the palette should be optimized using some heuristics, then returns the list of palette entries in use. :param im: Image object :param info: encoderinfo :returns: list of indexes of palette entries in use, or None )r] r^ r� r r^ i r N) rj ro �_FORCE_OPTIMIZE�width�heightr� � histogramr� r) rg )r@ r$ �optimiser� r6 �countr r r r� s � � r� c C s6 | sdS t | �dk r dS t�t�t | �d d��d S )Nr rR r r r! )r) �math�ceil�log)r� r r r r� % s r� c C s< t | �}d|> t| �d }|dkr | 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� �actual_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 r� )r@ r r r r� A s r� c C sd d}|r0|}t |t�r0z | j�|| �}W |S ty/ } zt|�dkr*W Y d }~dS � d }~ww |S )Nr z$cannot allocate more than 256 colors)r� rW r, �getcolorre r� )r@ �infoBackgroundr rD r r r r� K s � ��r� c C s� d}dD ]*}|r.||v r.|dkr|| dks)|dkr*dt || � kr(dks*n qd} n q| j�d �dkr9d}t| |�d ��}t| �}t|�}d | t| jd � t| jd � t|d �t|�td� t |�gS ) z2Return a list of strings representing a GIF headers 87a)rU rI rP rL rI r rL r rM s 89ar r s GIFr ) r) r$ ro r� r� r� r� rf r r� )r@ r$ r � extensionKeyr r� r� r r r r� _ s2 &�� � � �r� c C sT z&||_ t| ||d� t�|| dd|j dt|j fg� | �d� W |` d S |` w )Nr r\ r� r� )r� r� r r� rf r� rj r� )r r� r� �paramsr r r r� � s � r� c C sd t | |�}|du r i }d|vrd| jv r| 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� �im_mod�headerr r r � getheader� 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 r� )r r� )r r r r r r� � r z getdata.<locals>.Collector.writeN)r� r� r� r r� r r r r � Collector� s r )rd r� r )r@ r� r r r r r r r� � s r� z.gifz image/gif)F)NN)r� ),r� r r r� � r r r r r �_binaryr r% r r r� r r r� r� r� r� r� r� r� r� r� r r r� r� r� r� r� r� r� r r� � register_openr� � register_save�register_save_all�register_extension� register_mimer r r r �<module> sJ i $5N T2% ' !