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GifImagePlugin.cpython-310.pyc
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Z#d7d/d0Z$d8d2d3Z%e&ej'ee e(ej'e e)ej'e e*ej'd4 e+ej'd5 dS )9 N )Image ImageChops ImageFile ImagePalette ImageSequence)i16le)o8)o16lec C s | d d dv S )N )s GIF87as GIF89a )prefixr r 4/usr/lib/python3/dist-packages/PIL/GifImagePlugin.py_accept) r c s| e Zd ZdZdZdZdZdd Zdd Ze d d Z e d d Z d d Z dd Z fddZdd Zdd Zdd Z ZS ) GifImageFileGIFzCompuserve GIFFNc C s, | j d}|r|d r| j |d S d S )Nr r )fpread)selfsr r r data: s zGifImageFile.datac C s | j d}t|std|d d | jd< t|dt|df| _g | _|d }|d@ d }|d @ rw|d | jd < | j d |> }td t |d D ],}|d || krg||d krg||d ksvn t d|}| | _ | _ nqJ| j | _| j | _d | _d | _| d d S )N znot a GIF filer version r background r RGB)r r r SyntaxErrorinfoi16_sizetilerangelenr rawglobal_palettepalette_GifImageFile__fptell_GifImageFile__rewind _n_frames _is_animated_seek)r r flagsbitspir r r _open@ s, 8 zGifImageFile._openc C sZ | j d u r*| }z | | d q ty$ | d | _ Y nw | | | j S )NTr )r0 r. seekEOFErrorr 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__frameimr2 r( r9 r8 )r frame last_framefer r r r8 { s zGifImageFile.seekc s |dkr d| _ d | _g d| _d| _| j| j d| _n| jr$| || jd kr2t d| g | _| j| _ | j rO| j | j | rL | sGd| _ d }i }d }d }d } | j d}|rf|dkrhn|dkr| j d}| }|d d kr|d } | d@ r|d }t|dd |d < d | @ } | d? } | r| | _nN|d dkr|rd|v r|d |7 < n||d< | }|sqY|d dkr|| j f|d< |d d dkr| }t|d kr|d dkrt|d|d< | r | sn|dkry| j d}t|dt|d} } | t|d | t|d } }| | jd ks,|| jd krCt| | jd t|| jd f| _t| j | | | |f}|d } | d@ dk}| d @ rj| d @ d }td | j d |> }| j dd }| j | _ n qZ|d u rt|| _| jdkrd | _d | jv rd | _| j | jd d | j d tj | _ | jd = n d | _| j d tj | _ | jr| j | j| j |p| j! fd!d"}|| _z| jdk rd | _nx| jdkr&| j\} } } }| | || f}t| | j"d |}|d urd }||d# }n d }|| j"d$d}tj#$|||| _n4| j r4| %| j | j| _n&|d urZ| j\} } } }| | || f}t| tj#$d |||d# | _W n t&ye Y nw |d ur|dkrz|d urz|| jd < d%| | | |f| j ||ffg| _ntd&D ]}||v r|| | j|< q|| jv r| j|= q|dkrЈ rd'nd(| _| jd'kr|sdd)l'm'} || j!}|| _(d S | _)|| _*d S )*Nr )r r r r r zcannot seek to frame T ; ! r r duration r! comment extensionr NETSCAPE2.0loop , r r @ r r r" transparencyRGBAc 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 PL)copy)+_GifImageFile__offsetdisposedispose_extentr? r- r8 r/ disposal_methodr' load ValueErrorr r r r% r. r) sizemaxr& r _decompression_bomb_checkr r* r9 pyaccessr$ moder@ putpalettealphaconvertFLOYDSTEINBERGpaster+ getcorefill_cropAttributeErrorr_ r, _frame_palette_frame_transparency)r rA r, r$ frame_transparency interlaceframe_dispose_extentr blockr3 dispose_bitsx0y0x1y1r4 r[ dispose_sizerX dispose_modekr_ r rY r r2 s" " S zGifImageFile._seekc s | j dkrd| jv rtj| j| j| jd | _n*| j| _| j r=d| _tjd| 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 putpalettegetdatasuper load_preparer __class__r r r d s zGifImageFile.load_preparec C s | j dkrd S | jd ur| j| jd | jd}n| jd}| || 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__formatformat_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 | dS | 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_sizergbar r r _normalize_mode s& r c C sf d}|r t |tttfrt|dd }t |tjr t|j}| jdkr1|s0| jddd }n|s>tdd t dD }tjd|d| _|rg }t dt |d D ]%}t |||d }z| jj | }W n t yq d}Y nw || qRt|D ]\}}|du rt t |D ] }||vr|||< nqq|| |} 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 ) isinstancebytes bytearraylistr r, rj r@ getpaletter( r) rW r KeyErrorappend enumerate remap_palette _get_optimize) r@ r, r$ source_paletteused_palette_colorsr6 source_colorindexjr r r _normalize_palette sJ r c C s t | d}|j D ] \}}| j|| q t||| j}t|| jD ]}|| 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_headerwrite get_interlace_write_local_header encoderconfigr _saverf r rj )r@ r r, im_outr vr r3 r r r _write_single_frame s $r c C s | j d| jd}| j d| jd}g }d}d }t| g| j dg D ]}t|D ]} t| } |dkrL| j D ] \} } | j | | q@t | || j } | j } t |t tfre|| | d< t |t tfrr|| | d< |d7 }|r|d } | ddkr|d u r| j d| jdd }t| |}td | j|}||d d j |}n| d }t| t|krt| |}n t| d |d }| }|s|r| d d | d 7 < q/nd }|| || d q/q(t|dkr:|D ]?}|d } |d st | |d D ]}| | q d}n|s d|d d< | |d } |d d d }t || ||d qdS d| j v rWt | j d t tfrYt | j d | j d< d S d S d S )NrI disposalr append_imagesr rE r! rU )r r r r] r@ r" r )r@ bboxr r r Tinclude_color_table)!r ro r$ itertoolschainr 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_datasum)r@ r r, rI r im_frames frame_count background_im imSequenceim_framer r r previousrX r base_imdeltar 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| jd}n d }| j dd| j d< |r*t| ||s0t| || |d t|dr@| 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| jdk 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$w t|}d}t||j }|d ur6z||}W n ty5 d}Y nw d|j v rEt|j d d }nd}t|j dd}|sX|dksX|r|r\dnd} | |d > O } |shd}| d td td t| t | t| td d |j v rdt |j d kr| d td |j d } t | t r| } tdt | dD ]} | | | d } | tt | | q| td d|j v r|j d } | d td td d td td t | td |j d}|rt|}t|}|r|dB }||B }| dt |d t |d t |jd t |jd t| |rD|rD| t| | td d S )NFrU TrI r r r r r! rG rH rS rL rK rM rP r rO r r r rQ r )r r intr r re ro r r o16r) r strencoder( r _get_color_table_sizerf _get_header_palette)r r@ r r3 transparent_color_existsrU r rI r packed_flagrL r6 subblocknumber_of_loopsr palette_bytescolor_table_sizer r r r w s r c C s | }ztt|dS}| jdkr tjd|g|tjd n:dd|g}dg}tj|tjtjd}tj||j|tjd}|j | } | rJt | || } | rVt | |W d n1 s`w Y W zt | W d S tyx Y d S w zt | W w ty Y w w )Nwbr" ppmtogif)stdoutstderrppmquant256)stdinr r )_dumpopenrj subprocess check_callDEVNULLPopenPIPEr r waitCalledProcessErrorosunlinkOSError) r@ r r tempfilerC quant_cmd togif_cmd quant_proc togif_procretcoder r r _save_netpbm sL r c C s | j dv rD|rF|ddrHtp| j dk}|s | j| j dk rJg }t| D ] \}}|r1|| q&|sBt|dkrLt |t|krN|S dS dS dS dS dS dS )aL Palette optimization is a potentially expensive operation. This function determines if the palette should be optimized using some heuristics, then returns the list of palette entries in use. :param im: Image object :param info: encoderinfo :returns: list of indexes of palette entries in use, or None )r] r^ r r r^ i r N) rj ro _FORCE_OPTIMIZEwidthheightr histogramr r) rg )r@ r$ optimiser r6 countr r r r s r c C s6 | sdS t | dk r dS ttt | d dd S )Nr rR r r r! )r) mathceillog)r r r r r % s r c C s< t | }d|> t| d }|dkr | tdd | 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 |tr0z | j|| }W |S ty/ } zt|dkr*W Y d }~dS d }~ww |S )Nr z$cannot allocate more than 256 colors)r rW r, getcolorre r )r@ infoBackgroundr rD r r r r K s r c C s d}dD ]*}|r.||v r.|dkr|| dks)|dkr*dt || kr(dks*n qd} n q| jd dkr9d}t| |d }t| }t|}d | t| jd t| jd t|d t|td t |gS ) z2Return a list of strings representing a GIF headers 87a)rU rI rP rL rI r rL r rM s 89ar r s GIFr ) r) r$ 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_modheaderr 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_saveregister_save_allregister_extension register_mimer r r r <module> sJ i $5N T2% ' !