media/common.py

import os

FILETYPE_AUDIO = 'audio'
FILETYPE_IMAGE = 'image'
FILETYPE_VIDEO = 'video'

EXTENTIONS_AUDIO = ['.mp3', ]
EXTENTIONS_IMAGE = ['.jpg', '.jpeg', '.jpe', '.png', '.tif', '.tiff', '.gif', ]
EXTENTIONS_VIDEO = ['.avi', '.mpg', '.mpeg', '.mpe', '.mov', '.qt', '.mp4', '.webm', '.ogv', '.flv', '.3gp', ]


def get_filetype(full_path):
    ext = os.path.splitext(full_path.lower())[1]
    if ext in EXTENTIONS_AUDIO:
        return FILETYPE_AUDIO
    elif ext in EXTENTIONS_IMAGE:
        return FILETYPE_IMAGE
    elif ext in EXTENTIONS_VIDEO:
        return FILETYPE_VIDEO