pada.py

#!/usr/bin/env python

# Copyright (c) 2016 Matthew Earl
# # Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
#     The above copyright notice and this permission notice shall be included
#     in all copies or substantial portions of the Software.
# 
#     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
#     OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
#     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
#     NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
#     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
#     OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
#     USE OR OTHER DEALINGS IN THE SOFTWARE.


import argparse
import glob
import json
import logging
import os
import sys

from builtins import str

import pada.align
import pada.framedrop
import pada.landmarks
import pada.logging


APP_NAME = "pada"
APP_AUTHOR = "matthewearl"
CONFIG_FILE_NAME = "pada.conf"


def parse_args():
    parser = argparse.ArgumentParser()
    parser.add_argument('--debug', help='Print debug information',
                        action='store_true')
    parser.add_argument('--config', help='Config file path', type=str,
                        default=CONFIG_FILE_NAME)
    parser.add_argument('--aligned-path',
                        help='Path where aligned images will be stored')
    parser.add_argument('--aligned-extension',
                        help='Extension (and filetype) to use for aligned '
                             'images.')
    parser.add_argument('--predictor-path',
                        help='DLib face predictor dat file',
                        type=str)
    parser.add_argument('--filtered-files',
                        help='File to write filtered files to',
                        type=str)

    subparsers = parser.add_subparsers(help='Sub-command help')

    print_config_paths = subparsers.add_parser(
        'print_config_paths',
        help='print config paths and exit')
    print_config_paths.set_defaults(cmd='print_config_paths')

    align_parser = subparsers.add_parser('align',
                                         help='align a set of images')
    align_parser.add_argument('--input-glob',
                              help='Input files glob', type=str)
    align_parser.add_argument('--img-thresh',
                              help='Max duplicate frame delta', type=float)
    align_parser.set_defaults(cmd='align')

    framedrop_parser = subparsers.add_parser(
                                       'framedrop',
                                       help='Drop frames from a set of images')
    framedrop_parser.add_argument('--erode-amount',
                              help='Amount to erode face mask by', type=int)
    framedrop_parser.add_argument(
                            '--frame-skip',
                            help='Ratio of input frames to output frames',
                            type=int)
    framedrop_parser.set_defaults(cmd='framedrop')

    return parser.parse_args()


if __name__ == "__main__":
    cli_args = parse_args()

    if cli_args.debug:
        logging.getLogger().setLevel(logging.DEBUG)
    else:
        logging.getLogger().setLevel(logging.INFO)

    # Build up a list of potential config files to parse.
    config_paths = []
    try:
        import appdirs
    except ImportError:
        logging.warn("appdirs not installed, not reading site/user config")
    else:
        config_paths.append(
            os.path.join(
                appdirs.user_config_dir(APP_NAME, APP_AUTHOR),
                CONFIG_FILE_NAME))
        config_paths.append(
            os.path.join(
                appdirs.site_config_dir(APP_NAME, APP_AUTHOR),
                CONFIG_FILE_NAME))
    if cli_args.config:
        config_paths.append(cli_args.config)

    if cli_args.cmd == "print_config_paths":
        for config_path in config_paths:
            print(config_path)
        sys.exit(0)

    # Attempt to open each config file, and update the `cfg` dict with each
    # one.
    cfg = {}
    for config_path in config_paths:
        try:
            with open(config_path) as f:
                d = json.load(f)
                if 'global' in d:
                    cfg.update(d['global'])
                if cli_args.cmd in d:
                    cfg.update(d[cli_args.cmd])
        except IOError:
            logging.warn("Could not open config file %s", config_path)
        else:
            logging.info("Read config file %s", config_path)

    # Add CLI arguments to the `cfg` dict.
    cfg.update((k, v) for k, v in cli_args.__dict__.items() if v is not None)
    logging.debug("Config is %r", cfg)

    # Execute the command by deferring to the appopriate module.
    landmark_finder = pada.landmarks.LandmarkFinder(
                                     os.path.expanduser(cfg['predictor_path']))
    if cli_args.cmd == "align":
        pada.align.align_images(
            input_files=sorted(glob.glob(cfg['input_glob'])),
            out_path=cfg['aligned_path'],
            out_extension=cfg['aligned_extension'],
            landmark_finder=landmark_finder,
            img_thresh=cfg['img_thresh'])
    elif cli_args.cmd == "framedrop":
        input_files_glob = os.path.join(
                                       cfg['aligned_path'],
                                       '*.{}'.format(cfg['aligned_extension']))
        filtered_files = pada.framedrop.filter_files(
            input_files=sorted(glob.glob(input_files_glob)),
            frame_skip=cfg['frame_skip'],
            erode_amount=cfg['erode_amount'],
            landmark_finder=landmark_finder)

        with open(cfg['filtered_files'], 'w') as f:
            for fname in filtered_files:
                f.write("{}\n".format(fname))