253 lines
8.9 KiB
Python
253 lines
8.9 KiB
Python
import sys
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import time
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import threading
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import os
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from pathlib import Path
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import fire
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import numpy as np
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import pyperclip
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from PIL import Image
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from PIL import UnidentifiedImageError
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from loguru import logger
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from pynput import keyboard
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from manga_ocr import MangaOcr
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from manga_ocr import GoogleVision
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from manga_ocr import AppleVision
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from manga_ocr import AzureComputerVision
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engines = ['avision', 'gvision', 'azure', 'mangaocr']
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def get_engine_name(engine):
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engine_names = ['Apple Vision', 'Google Vision', 'Azure Computer Vision', 'Manga OCR']
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return engine_names[engines.index(engine)]
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def are_images_identical(img1, img2):
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if None in (img1, img2):
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return img1 == img2
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img1 = np.array(img1)
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img2 = np.array(img2)
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return (img1.shape == img2.shape) and (img1 == img2).all()
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def process_and_write_results(mocr, avision, gvision, azure, img_or_path, write_to, engine):
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t0 = time.time()
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if engine == 'gvision':
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text = gvision(img_or_path)
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elif engine == 'avision':
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text = avision(img_or_path)
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elif engine == 'azure':
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text = azure(img_or_path)
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else:
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text = mocr(img_or_path)
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t1 = time.time()
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logger.opt(ansi=True).info(f"Text recognized in {t1 - t0:0.03f}s using <cyan>{get_engine_name(engine)}</cyan>: {text}")
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if write_to == 'clipboard':
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pyperclip.copy(text)
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else:
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write_to = Path(write_to)
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if write_to.suffix != '.txt':
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raise ValueError('write_to must be either "clipboard" or a path to a text file')
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with write_to.open('a', encoding="utf-8") as f:
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f.write(text + '\n')
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def get_path_key(path):
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return path, path.lstat().st_mtime
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def run(read_from='clipboard',
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write_to='clipboard',
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pretrained_model_name_or_path='kha-white/manga-ocr-base',
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force_cpu=False,
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delay_secs=0.5,
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engine='mangaocr',
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verbose=False
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):
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"""
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Run OCR in the background, waiting for new images to appear either in system clipboard, or a directory.
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Recognized texts can be either saved to system clipboard, or appended to a text file.
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:param read_from: Specifies where to read input images from. Can be either "clipboard", or a path to a directory.
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:param write_to: Specifies where to save recognized texts to. Can be either "clipboard", or a path to a text file.
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:param pretrained_model_name_or_path: Path to a trained model, either local or from Transformers' model hub.
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:param force_cpu: If True, OCR will use CPU even if GPU is available.
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:param delay_secs: How often to check for new images, in seconds.
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:param engine: OCR engine to use. Available: "mangaocr", "gvision", "avision", "azure".
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:param verbose: If True, unhides all warnings.
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"""
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fmt = "<green>{time:HH:mm:ss.SSS}</green> | <level>{message}</level>"
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config = {
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"handlers": [
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{"sink": sys.stderr, "format": fmt},
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],
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}
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logger.configure(**config)
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mocr = MangaOcr(pretrained_model_name_or_path, force_cpu)
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gvision = GoogleVision()
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azure = AzureComputerVision()
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avision = AppleVision()
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if engine not in engines:
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msg = 'Unknown OCR engine!'
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raise NotImplementedError(msg)
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if sys.platform not in ('darwin', 'win32') and write_to == 'clipboard':
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# Check if the system is using Wayland
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import os
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if os.environ.get('WAYLAND_DISPLAY'):
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# Check if the wl-clipboard package is installed
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if os.system("which wl-copy > /dev/null") == 0:
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pyperclip.set_clipboard("wl-clipboard")
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else:
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msg = 'Your session uses wayland and does not have wl-clipboard installed. ' \
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'Install wl-clipboard for write in clipboard to work.'
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raise NotImplementedError(msg)
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if read_from == 'clipboard':
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from PIL import ImageGrab
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logger.info('Reading from clipboard')
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paused = False
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global just_unpaused
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just_unpaused = True
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img = None
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def on_key_press(key):
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global tmp_paused
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if key == keyboard.Key.cmd_r or key == keyboard.Key.ctrl_r:
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tmp_paused = True
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def on_key_release(key):
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global tmp_paused
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global just_unpaused
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if key == keyboard.Key.cmd_r or key == keyboard.Key.ctrl_r:
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tmp_paused = False
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just_unpaused = True
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global tmp_paused
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tmp_paused = False
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tmp_paused_listener = keyboard.Listener(
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on_press=on_key_press,
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on_release=on_key_release)
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tmp_paused_listener.start()
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else:
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read_from = Path(read_from)
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if not read_from.is_dir():
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raise ValueError('read_from must be either "clipboard" or a path to a directory')
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logger.info(f'Reading from directory {read_from}')
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old_paths = set()
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for path in read_from.iterdir():
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old_paths.add(get_path_key(path))
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def getchar_thread():
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global user_input
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import os
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if os.name == 'nt': # how it works on windows
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import msvcrt
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while True:
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user_input = msvcrt.getch()
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if user_input.lower() in 'tq':
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break
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else:
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import tty, termios, sys
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fd = sys.stdin.fileno()
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old_settings = termios.tcgetattr(fd)
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try:
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tty.setcbreak(sys.stdin.fileno())
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while True:
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user_input = sys.stdin.read(1)
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if user_input.lower() in 'tq':
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break
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finally:
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termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
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global user_input
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user_input = ''
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user_input_thread = threading.Thread(target=getchar_thread, daemon=True)
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user_input_thread.start()
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while True:
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if user_input != '':
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if user_input.lower() in 'tq':
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if read_from == 'clipboard':
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tmp_paused_listener.stop()
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user_input_thread.join()
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logger.info('Terminated!')
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break
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if read_from == 'clipboard' and user_input.lower() == 'p':
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if paused:
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logger.info('Unpaused!')
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just_unpaused = True
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else:
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logger.info('Paused!')
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paused = not paused
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elif user_input.lower() == 's':
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if engine == engines[-1]:
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engine = engines[0]
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else:
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engine = engines[engines.index(engine) + 1]
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logger.opt(ansi=True).info(f"Switched to <cyan>{get_engine_name(engine)}</cyan>!")
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elif user_input.lower() in 'agvm':
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new_engine = engines['agvm'.find(user_input.lower())]
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if engine != new_engine:
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engine = new_engine
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logger.opt(ansi=True).info(f"Switched to <cyan>{get_engine_name(engine)}</cyan>!")
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user_input = ''
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if read_from == 'clipboard':
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if not paused and not tmp_paused:
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old_img = img
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try:
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img = ImageGrab.grabclipboard()
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except OSError as error:
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if not verbose and "cannot identify image file" in str(error):
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# Pillow error when clipboard hasn't changed since last grab (Linux)
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pass
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elif not verbose and "target image/png not available" in str(error):
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# Pillow error when clipboard contains text (Linux, X11)
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pass
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else:
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logger.warning('Error while reading from clipboard ({})'.format(error))
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else:
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if not just_unpaused and isinstance(img, Image.Image) and not are_images_identical(img, old_img):
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process_and_write_results(mocr, avision, gvision, azure, img, write_to, engine)
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if just_unpaused:
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just_unpaused = False
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else:
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for path in read_from.iterdir():
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path_key = get_path_key(path)
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if path_key not in old_paths:
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old_paths.add(path_key)
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try:
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img = Image.open(path)
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img.load()
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except (UnidentifiedImageError, OSError) as e:
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logger.warning(f'Error while reading file {path}: {e}')
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else:
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process_and_write_results(mocr, avision, gvision, azure, img, write_to, engine)
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time.sleep(delay_secs)
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if __name__ == '__main__':
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fire.Fire(run)
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