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# Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
This script takes a list of TTS manifests and creates a JSON mapping the input speaker names to
unique indices for multi-speaker TTS training.
To ensure that speaker names are unique across datasets, it is recommended that you prepend the speaker
names in your manifest with the name of the dataset.
$ python <nemo_root_path>/scripts/dataset_processing/tts/create_speaker_map.py \
--manifest_path=manifest1.json \
--manifest_path=manifest2.json \
--speaker_map_path=speakers.json
Example output:
{
"vctk_p225": 0,
"vctk_p226": 1,
"vctk_p227": 2,
...
}
"""
import argparse
import json
from pathlib import Path
from nemo.collections.asr.parts.utils.manifest_utils import read_manifest
def get_args():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="Create mapping from speaker names to numerical speaker indices.",
)
parser.add_argument(
"--manifest_path", required=True, type=Path, action="append", help="Path to training manifest(s).",
)
parser.add_argument(
"--speaker_map_path", required=True, type=Path, help="Path for output speaker index JSON",
)
parser.add_argument(
"--overwrite",
action=argparse.BooleanOptionalAction,
help="Whether to overwrite the output speaker file if it exists.",
)
args = parser.parse_args()
return args
def main():
args = get_args()
manifest_paths = args.manifest_path
speaker_map_path = args.speaker_map_path
overwrite = args.overwrite
for manifest_path in manifest_paths:
if not manifest_path.exists():
raise ValueError(f"Manifest {manifest_path} does not exist.")
if speaker_map_path.exists():
if overwrite:
print(f"Will overwrite existing speaker path: {speaker_map_path}")
else:
raise ValueError(f"Speaker path already exists: {speaker_map_path}")
speaker_set = set()
for manifest_path in manifest_paths:
entries = read_manifest(manifest_path)
for entry in entries:
speaker = str(entry["speaker"])
speaker_set.add(speaker)
speaker_list = list(speaker_set)
speaker_list.sort()
speaker_index_map = {speaker_list[i]: i for i in range(len(speaker_list))}
with open(speaker_map_path, 'w', encoding="utf-8") as stats_f:
json.dump(speaker_index_map, stats_f, indent=4)
if __name__ == "__main__":
main()
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