o ϯiK@sZddlmZddlZddlZddlmZmZmZddlm Z ddl m Z GdddZ dS)) annotationsN)ListOptionalTuple) g_pathmgr) make_datasetc@sneZdZdZedddZeddd Zedd d Z d d!ddZddZ e de Z d"ddZ d#ddZ dS)$LabeledVideoPathszQ LabeledVideoPaths contains pairs of video path and integer index label. data_pathstrreturncCs6t|r t|St|rt|St|d)a[ Factory function that creates a LabeledVideoPaths object depending on the path type. - If it is a directory path it uses the LabeledVideoPaths.from_directory function. - If it's a file it uses the LabeledVideoPaths.from_csv file. Args: file_path (str): The path to the file to be read. not found.)risfilerfrom_csvisdirfrom_directoryFileNotFoundError)clsr rY/home/ubuntu/.local/lib/python3.10/site-packages/pytorchvideo/data/labeled_video_paths.py from_paths   zLabeledVideoPaths.from_path file_pathcCst|s J|dg}t|d1}|D]"}|dd}t|dkr0|d}d}n|\}}||t|fqWdn1sHwYt|dks[Jd|d||S) a" Factory function that creates a LabeledVideoPaths object by reading a file with the following format: ... Args: file_path (str): The path to the file to be read. r rNrFailed to load dataset from .) rexistsopenread splitlinesrsplitlenappendint)rrvideo_paths_and_labelf path_label line_splitlabelrrrr$s     zLabeledVideoPaths.from_csvdir_pathcst|s J|dtddt|DfddttD}t||dd}t|dks/.mp4 Classes are indexed from 0 to the number of classes, alphabetically. E.g. dir_path/class_x/xxx.ext dir_path/class_x/xxy.ext dir_path/class_x/xxz.ext dir_path/class_y/123.ext dir_path/class_y/nsdf3.ext dir_path/class_y/asd932_.ext Would produce two classes labeled 0 and 1 with 3 videos paths associated with each. Args: dir_path (str): Root directory to the video class directories . r css|] }|r|jVqdSN)is_dirname).0r%rrr bsz3LabeledVideoPaths.from_directory..csi|]}||qSrr)r-iclassesrr dsz4LabeledVideoPaths.from_directory..)mp4avi) extensionsrrr) rrsortedpathlibPathiterdirranger!r)rr) class_to_idxr$rr0rrFs z LabeledVideoPaths.from_directorypaths_and_labelsList[Tuple[str, Optional[int]]]NonecCs||_||_dS)z Args: paths_and_labels [(str, int)]: a list of tuples containing the video path and integer label. N)_paths_and_labels _path_prefix)selfr= path_prefixrrr__init__ms zLabeledVideoPaths.__init__cCs ||_dSr*)rA)rBprefixrrrrCxs zLabeledVideoPaths.path_prefixNindexr#Tuple[str, int]cCs&|j|\}}tj|j|d|ifS)z Args: index (int): the path and label index. Returns: The path and label tuple for the given index. r()r@ospathjoinrA)rBrFrIr(rrr __getitem__}szLabeledVideoPaths.__getitem__cCs t|jS)zQ Returns: The number of video paths and label pairs. )r!r@)rBrrr__len__s zLabeledVideoPaths.__len__)r r r r)rr r r)r)r r r)r<)r=r>r r?)rFr#r rG)r r#) __name__ __module__ __qualname____doc__ classmethodrrrrDrCpropertyrKrLrrrrr s  ! '    r) __future__rrHr7typingrrriopath.common.file_iortorchvision.datasets.folderrrrrrrs