;c]c@`sdZddlmZmZmZddlZddlmZddl m Z de fdYZ e d d d d Z ej e dS( s Storage of image data in npz format. Not a great format, but at least it supports volumetric data. And its less than 100 lines. i(tabsolute_importtprint_functiontdivisionNi(tformats(tFormatt NpzFormatcB`sReZdZdZdZdejfdYZdejfdYZRS(s NPZ is a file format by numpy that provides storage of array data using gzip compression. This imageio plugin supports data of any shape, and also supports multiple images per file. However, the npz format does not provide streaming; all data is read/written at once. Further, there is no support for meta data. Beware that the numpy npz format has a bug on a certain combination of Python 2.7 and numpy, which can cause the resulting files to become unreadable on Python 3. Also, this format is not available on Pypy. See the BSDF format for a similar (but more fully featured) format. Parameters for reading ---------------------- None Parameters for saving --------------------- None cC`s|j|jkS(N(t extensiont extensions(tselftrequest((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt _can_read(scC`s|j|jkS(N(RR(RR ((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt _can_write,stReadercB`s5eZdZdZdZdZdZRS(cC`sdtj|jj|_t|jtjjjs<t d}t |jj d||_ dS(NcS`s|jddS(Nt_i(tsplit(tx((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt8ttkey( tnptloadR tget_filet_npzt isinstancetlibtnpyiotNpzFiletAssertionErrortsortedtfilest_names(Rtsorter((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt_open3s! cC`s|jjdS(N(Rtclose(R((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt_close;scC`s t|jS(N(tlenR(R((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt _get_length>scC`sN|dks!|t|jkr0tdn|j|j|}|ifS(Nis)Index out of range while reading from nzp(R#Rt IndexErrorR(Rtindextim((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt _get_dataAs!cC`stddS(Ns*The npz format does not support meta data.(t RuntimeError(RR&((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt_get_meta_dataIs(t__name__t __module__R R"R$R(R*(((s2lib/python2.7/site-packages/imageio/plugins/npz.pyR 2s     tWritercB`s,eZdZdZdZdZRS(cC`s g|_dS(N(t_images(R((s2lib/python2.7/site-packages/imageio/plugins/npz.pyR PscC`s tj|jj|jdS(N(Rtsavez_compressedR RR.(R((s2lib/python2.7/site-packages/imageio/plugins/npz.pyR"UscC`s|jj|dS(N(R.tappend(RR'tmeta((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt _append_dataYscC`stddS(Ns*The npz format does not support meta data.(R)(RR1((s2lib/python2.7/site-packages/imageio/plugins/npz.pyt set_meta_data\s(R+R,R R"R2R3(((s2lib/python2.7/site-packages/imageio/plugins/npz.pyR-Os   (R+R,t__doc__R R RR R-(((s2lib/python2.7/site-packages/imageio/plugins/npz.pyRs   tnpzsNumpy's compressed array formattiIvV(R4t __future__RRRtnumpyRRRtcoreRRtformatt add_format(((s2lib/python2.7/site-packages/imageio/plugins/npz.pyts Q