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import copy
import shutil
import argparse
import json
import sys
import os
from tqdm import tqdm
sys.path.append('.')
from imaginaire.utils.lmdb import create_metadata, \
construct_file_path, check_and_add, build_lmdb # noqa: E402
from imaginaire.config import Config # noqa: E402
def parse_args():
r"""Parse user input arguments"""
parser = argparse.ArgumentParser(description='Folder -> LMDB conversion')
parser.add_argument('--data_root', type=str, required=True,
help='Input data location.')
parser.add_argument('--config', type=str, required=True,
help='Config with label info.')
parser.add_argument('--output_root', type=str, required=True,
help='Output LMDB location')
parser.add_argument('--input_list', type=str, default='',
help='list of images that will be used.')
parser.add_argument('--metadata_factor', type=float, default=0.75,
help='Factor of filesize to allocate for metadata?')
parser.add_argument('--overwrite', default=False, action='store_true',
help='Overwrite output file if exists')
parser.add_argument('--paired', default=False, action='store_true',
help='Is the input data paired?')
parser.add_argument('--large', default=False, action='store_true',
help='Is the dataset large?')
parser.add_argument('--remove_missing', default=False, action='store_true',
help='Remove missing files from paired datasets?')
args = parser.parse_args()
return args
def main():
r""" Build lmdb for training/testing.
Usage:
python scripts/build_lmdb.py \
--config configs/data_image.yaml \
--data_root /mnt/bigdata01/datasets/test_image \
--output_root /mnt/bigdata01/datasets/test_image/lmdb_0/ \
--overwrite
"""
args = parse_args()
cfg = Config(args.config)
# Check if output file already exists.
if os.path.exists(args.output_root):
if args.overwrite:
print('Deleting existing output LMDB.')
shutil.rmtree(args.output_root)
else:
print('Output root LMDB already exists. Use --overwrite. ' +
'Exiting...')
return
all_filenames, extensions = \
create_metadata(data_root=args.data_root,
cfg=cfg,
paired=args.paired,
input_list=args.input_list)
required_data_types = cfg.data.data_types
# Build LMDB.
os.makedirs(args.output_root)
for data_type in required_data_types:
data_size = 0
print('Data type:', data_type)
filepaths, keys = [], []
print('>> Building file list.')
# Get appropriate list of files.
if args.paired:
filenames = all_filenames
else:
filenames = all_filenames[data_type]
for sequence in tqdm(filenames):
for filename in copy.deepcopy(filenames[sequence]):
filepath = construct_file_path(
args.data_root, data_type, sequence, filename,
extensions[data_type])
key = '%s/%s' % (sequence, filename)
filesize = check_and_add(filepath, key, filepaths, keys,
remove_missing=args.remove_missing)
# Remove file from list, if missing.
if filesize == -1 and args.paired and args.remove_missing:
print('Removing %s from list' % (filename))
filenames[sequence].remove(filename)
data_size += filesize
# Remove empty sequences.
if args.paired and args.remove_missing:
for sequence in copy.deepcopy(all_filenames):
if not all_filenames[sequence]:
all_filenames.pop(sequence)
# Allocate size.
data_size = max(int((1 + args.metadata_factor) * data_size), 1e9)
print('Reserved size: %s, %dGB' % (data_type, data_size // 1e9))
# Write LMDB to file.
output_filepath = os.path.join(args.output_root, data_type)
build_lmdb(filepaths, keys, output_filepath, data_size, args.large)
# Output list of all filenames.
if args.output_root:
with open(args.output_root + '/all_filenames.json', 'w') as fout:
json.dump(all_filenames, fout, indent=4)
# Output metadata.
with open(args.output_root + '/metadata.json', 'w') as fout:
json.dump(extensions, fout, indent=4)
else:
return all_filenames, extensions
if __name__ == "__main__":
main()
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