o i%@sdZddlmZddlmZddlmZddlmZediZ de de fd d Z d e d edefd dZ dd e dedededede defddZd e defddZde deefddZdS)zjUse Python to decode RLE Lossless encoded *Pixel Data*. This module is not intended to be used directly. )unpack) warn_and_log) DecodeRunner) RLELosslessuidreturncCs|tvS)zeReturn ``True`` if a pixel data decoder for `uid` is available for use, ``False`` otherwise. )DECODER_DEPENDENCIES)rrrQ/mnt/sdb/aimis/docanh/lib/python3.10/site-packages/pydicom/pixels/decoders/rle.py is_availablesr srcrunnerc Cs2t||j|j|j|j|dd}|dd|S)aKWrapper for use with the decoder interface. Parameters ---------- src : bytes A single frame of RLE encoded data. runner : pydicom.pixels.decoders.base.DecodeRunner Required parameters: * `rows`: int * `columns`: int * `samples_per_pixel`: int * `bits_allocated`: int Optional parameters: * `rle_segment_order`: str, "<" for little endian segment order, or ">" for big endian (default) Returns ------- bytearray The decoded frame, ordered as planar configuration 1. rle_segment_order>planar_configuration)_rle_decode_framerowscolumnssamples_per_pixelbits_allocated get_option set_option)r r framerrr _decode_frames  rrrr nr_samplesnr_bits segment_ordercCs~|dr td|dt|dd}t|}|d}|||kr/td|d||d|t|t||||} |||} t|D]r} t|} |d krV| nt| } | D]_}| ||}t|||||d }t|}|||krtd |d||d |||krt d |d||d|dkr||d }|| | }|d||| ||| |<q\qJ| S)aDecodes a single frame of RLE encoded data. Each frame may contain up to 15 segments of encoded data. Parameters ---------- src : bytes The RLE frame data rows : int The number of output rows columns : int The number of output columns nr_samples : int Number of samples per pixel (e.g. 3 for RGB data). nr_bits : int Number of bits per sample - must be a multiple of 8 segment_order : str The segment order of the `data`, '>' for big endian (default), '<' for little endian (non-conformant). Returns ------- bytearray The frame's decoded data in little endian and planar configuration 1 byte ordering (i.e. for RGB data this is all red pixels then all green then all blue, with the bytes for each pixel ordered from MSB to LSB when reading left to right). z-Unable to decode RLE encoded pixel data with z bits allocatedN@zPThe number of RLE segments in the pixel data doesn't match the expected amount (z vs. z segments)` rz(The RLE header can only be 64 bytes longzr+rrr r"s 5 &r"N)r)__doc__structr pydicom.miscrpydicom.pixels.decoders.baser pydicom.uidrr strboolr bytesr&rintrr)rCr"rrrr s4    0 o'