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+assets = ["requests","tqdm"] [tool.poetry.group.dev.dependencies] twine = "^4.0.2" diff --git a/supervision/assets/__init__.py b/supervision/assets/__init__.py new file mode 100644 index 00000000..17119d2e --- /dev/null +++ b/supervision/assets/__init__.py @@ -0,0 +1,2 @@ +from .asset_list import VideoAssets +from .downloader import download_assets diff --git a/supervision/assets/asset_list.py b/supervision/assets/asset_list.py new file mode 100644 index 00000000..588cdff3 --- /dev/null +++ b/supervision/assets/asset_list.py @@ -0,0 +1,45 @@ +from enum import Enum + +BASE_VIDEO_URL = "https://media.roboflow.com/supervision/video-examples/" + + +class VideoAssets(Enum): + VEHICLES = "vehicles.mp4" + MILK_1 = "milk-video-1.mp4" + VEHICLES_2 = "vehicles-2.mp4" + GROCERY_STORE = "grocery-store.mp4" + SUBWAY = "subway.mp4" + MARKET_SQUARE = "market-square.mp4" + PEOPLE_WALKING_BW = "people-walking-bw.mp4" + + +VIDEO_ASSETS: dict[str : tuple[str]] = { + VideoAssets.VEHICLES.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.VEHICLES.value}", + "8155ff4e4de08cfa25f39de96483f918", + ), + VideoAssets.VEHICLES_2.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.VEHICLES_2.value}", + "830af6fba21ffbf14867a7fea595937b", + ), + VideoAssets.MILK_1.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.MILK_1.value}", + "9e8fb6e883f842a38b3d34267290bdc7", + ), + VideoAssets.GROCERY_STORE.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.GROCERY_STORE.value}", + "11402e7b861c1980527d3d74cbe3b366", + ), + VideoAssets.SUBWAY.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.SUBWAY.value}", + "453475750691fb23c56a0cffef089194", + ), + VideoAssets.MARKET_SQUARE.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.MARKET_SQUARE.value}", + "859179bf4a21f80a8baabfdb2ed716dc", + ), + VideoAssets.PEOPLE_WALKING_BW.value: ( + f"{BASE_VIDEO_URL}{VideoAssets.PEOPLE_WALKING_BW.value}", + "0574c053c8686c3f1dc0aa3743e45cb9", + ), +} diff --git a/supervision/assets/downloader.py b/supervision/assets/downloader.py new file mode 100644 index 00000000..b5312d9c --- /dev/null +++ b/supervision/assets/downloader.py @@ -0,0 +1,99 @@ +from functools import partial +from hashlib import md5 +from os import remove as os_remove +from os.path import exists as path_exists +from pathlib import Path +from shutil import copyfileobj +from typing import Union + +from supervision.assets import VideoAssets +from supervision.assets.asset_list import VIDEO_ASSETS + +try: + from requests import Response, get + from tqdm.auto import tqdm +except ImportError: + raise ValueError( + "\n" + "Please install requests and tqdm to download assets \n" + "or install supervision with assets \n" + "pip install supervision[assets] \n" + "\n" + ) + + +# md5 check function +def _check_md5(filename: str, orig_md5: str) -> bool: + """ + filename: str, A string representing the path to the file. + orig_md5: str, A string representing the original md5 hash. + """ + if not path_exists(filename): + return False + with open(filename, "rb") as file_to_check: + # read contents of the file + data = file_to_check.read() + # pipe contents of the file through + md5_returned = md5(data).hexdigest() + # Return True if the computed hash matches the original one + if md5_returned == orig_md5: + return True + return False + + +def download_assets(asset_name: Union[VideoAssets, str]) -> str: + """ + asset_name: VIDEO_ASSETS, name of the file to download + """ + + filename = f"{asset_name}" + if not path_exists(filename) and asset_name in VIDEO_ASSETS: + print(f"Downloading {filename} assets \n") + res: Response = get( + VIDEO_ASSETS[asset_name][0], stream=True, allow_redirects=True + ) + if res.status_code != 200: + res.raise_for_status() + raise RuntimeError( + f"Request to {VIDEO_ASSETS[asset_name][0]} " + f"returned status code {res.status_code}" + ) + + file_size: int = int(res.headers.get("Content-Length", 0)) + folder_path: Path = Path(filename).expanduser().resolve() + folder_path.parent.mkdir(parents=True, exist_ok=True) + + desc = "(Unknown total file size)" if file_size == 0 else "" + res.raw.read = partial( + res.raw.read, decode_content=True + ) # Decompress if needed + with tqdm.wrapattr( + res.raw, + "read", + total=file_size, + desc=desc, + colour="a351fb", + ) as r_raw: + with folder_path.open("wb") as f: + copyfileobj(r_raw, f) + + elif path_exists(filename): + if not _check_md5(filename, VIDEO_ASSETS[asset_name][2]): + print("File corrupted. Re-downloading... \n") + os_remove(filename) + download_assets(asset_name) + + print(f"{filename} asset download complete. \n") + else: + raise ValueError( + "Invalid asset type. It should be one of the following: \n" + "vehicles.mp4 \n" + "vehicles-2.mp4 \n" + "milk-video-1.mp4 \n" + "grocery-store.mp4 \n" + "subway.mp4 \n" + "market-square.mp4 \n" + "people-walking-bw.mp4 \n" + ) + + return filename