o 4ήc?.@sdZddlmZgdZddlmZmZmZddlZzddl Z dAdddBd dZ dddCddZ Wne yM dAdddBddZ dddCddZ Ynwzddl Z dAdddBddZdddCddZWne y dAdddBddZdddCddZYnwdddDddZe dEdddFd"d#Ze dEdddGd%d#Z  dEdddHd'd#ZedId*d+ZedJd,d+Z  dEdddHd-d+Zedgd.dKd1d2Zedgd.dLd3d2Zdgd.dMd4d2Z dNdddOd9d:Z dPdddQd;d<ZdRd?d@ZdS)SzFallback imagecodecs codecs. This module provides alternative, pure Python and NumPy implementations of some functions of the `imagecodecs`_ package. The functions may raise NotImplementedError. .. _imagecodecs: https://github.com/cgohlke/imagecodecs ) annotations) bitorder_decode delta_decode delta_encodefloat24_decode lzma_decode lzma_encodepackbits_decodepackints_decodepackints_encode zlib_decode zlib_encode)AnyLiteraloverloadNoutlevel int | Nonedatabytes | numpy.ndarrayreturnbytescCst|tjr |}t|S)zCompress LZMA.) isinstancenumpyndarraytobyteslzmacompressrrrr >> packbits_decode(b'\x80\x80') # NOP b'' >>> packbits_decode(b'\x02123') b'123' >>> packbits_decode( ... b'\xfe\xaa\x02\x80\x00\x2a\xfd\xaa\x03\x80\x00\x2a\x22\xf7\xaa' ... )[:-5] b'\xaa\xaa\xaa\x80\x00*\xaa\xaa\xaa\xaa\x80\x00*"\xaa\xaa\xaa\xaa\xaa' rTi)extendord TypeErrorr)r0r out_extendinr r r!r s$   r r1axisintdistbytes | bytearraycCdSNr rr:r<rr r r!rr numpy.ndarraycCr>r?r r@r r r!rrA!bytes | bytearray | numpy.ndarraycCs|dkr td|dt|ttfr-tj|tjd}tj|dd}t|d|d S|j }|j dkrA| |j d|j}tj||d}td g|j}d||<tj|d|t||d}|j jsl|d }|j dkrv| |S|S) z Encode Delta.r1zdelta_encode with dist=# requires the 'imagecodecs' packagedtyper)r:fuNT)NotImplementedErrorrr bytearrayr frombufferuint8diffinsertrrFkindview byteorderitemsizeslicendimtupleisnativebyteswap newbyteorder)rr:r<rrMrFkeyr r r!rs(     rrcCr>r?r r@r r r!rrArcCr>r?r r@r r r!rrAcCs|dkr td|d|dur|jjsd}t|ttfr1tj|tjd}tj |dtj|d S|j j dkra|j j sDtd |j d||j jd |j j}tj |||j d }||j Stj |||j |dS) z Decode Delta.r1zdelta_decode with dist=rDNrEr)r:rFrrGzdelta_decode with rH)r:rF)rIflags writeablerrrJrrKrLcumsumrrFrOrVrPrQrR)rr:r<rrPr r r!rs$     )r _bitorderr] list[Any]cCr>r?r rrr]r r r!rrArcCr>r?r r_r r r!rrAcCs|s|d|tj|dtjdt|ttfr"||dSz|d}tj |d||d|WSt y?t dw)aKReverse bits in each byte of bytes or numpy array. Decode data where pixels with lower column values are stored in the lower-order bits of the bytes (TIFF FillOrder is LSB2MSB). Parameters: data: Data to bit-reversed. If bytes type, a new bit-reversed bytes is returned. NumPy arrays are bit-reversed in-place. Examples: >>> bitorder_decode(b'\x01\x64') b'\x80&' >>> data = numpy.array([1, 666], dtype='uint16') >>> bitorder_decode(data) >>> data array([ 128, 16473], dtype=uint16) s@ `P0pH(hX8xD$dT4t L,l\<|B"bR2r J*jZ:zF&fV6vN.n^>~A!aQ1q I)iY9yE%eU5u M-m]=}C#cS3s K+k[;{G'gW7wO/o_?rrErLr1rz>> packints_decode(b'a', 'B', 1) array([0, 1, 1, 0, 0, 0, 0, 1], dtype=uint8) r1z|Br9N)rg @zpackints_decode of z0-bit integers requires the 'imagecodecs' package)rrK unpackbitsreshapeastyperI)rrFrerfr data_arrayr r r!r As     r cCtd)zTightly pack integers.z2packints_encode requires the 'imagecodecs' packagerI)rrer:rr r r!r mr rQLiteral['>', '<']cCro)z"Return float32 array from float24.z1float24_decode requires the 'imagecodecs' packagerp)rrQr r r!rvrqrr?)rrrrrr)rrrr)r0rrr)r9r1)r:r;r<r;rr=rr)r:r;r<r;rrBrrB)r:r;r<r;rrCrr) r:r;r<r;rr=rrrr) r:r;r<r;rrBrrrrB)rr=r]r^rr)rrBr]r^rrB)rrCr]r^rr)r) rFrdrer;rfr;rrrrB)r9)rer;r:r;rrBrr)rQrrrrrrB)__doc__ __future__r__all__typingrrrrrrr ImportErrorr.r r r rrrr r rr r r r!s   !     >-