import os

video_extensions = {
    '.mp4', '.m4a', '.m4v', '.f4v', '.f4a', '.m4b', '.m4r', '.f4b', '.mov',
    '.3gp', '.3gp2', '.3g2', '.3gpp', '.3gpp2', '.ogg', '.oga', '.ogv', '.ogx',
    '.wmv', '.wma', '.asf', '.webm', '.flv', '.avi', '.gifv', '.mkv', '.rm',
    '.rmvb', '.vob', '.dvd', '.mpg', '.mpeg', '.mp2', '.mpe', '.mpv', '.mpg',
    '.mpeg', '.m2v', '.svi', '.3gp', '.mxf', '.roq', '.nsv', '.flv', '.f4v',
    '.f4p', '.f4a', '.f4b'
}

image_extensions = {
    '.jpg', '.jpeg', '.jpe', '.jif', '.jfif', '.jfi', '.png', '.gif',
    '.webp', '.tiff', '.tif', '.psd', '.raw', '.arw', '.cr2', '.nrw',
    '.k25', '.bmp', '.dib', '.heif', '.heic', '.ind', '.indd', '.indt',
    '.jp2', '.j2k', '.jpf', '.jpx', '.jpm', '.mj2', '.svg', '.svgz',
    '.ai', '.eps', '.ico'
}


def is_video_file(filename):
    return os.path.splitext(filename)[-1].lower() in video_extensions


def is_image_file(filename):
    return os.path.splitext(filename)[-1].lower() in image_extensions


def is_video_or_image(filename):
    file_extension = os.path.splitext(filename)[-1].lower()
    # 检查扩展名是否在定义的视频或图片文件后缀集合中
    return file_extension in video_extensions or file_extension in image_extensions