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#!/usr/bin/env python3
"""TTS mode decoding."""
import argparse
import logging
from pathlib import Path
import shutil
import sys
import time
from typing import Optional
from typing import Sequence
from typing import Tuple
from typing import Union
from collections import defaultdict
import json
import matplotlib
import numpy as np
import soundfile as sf
import torch
from typeguard import check_argument_types
from espnet.utils.cli_utils import get_commandline_args
from espnet2.fileio.npy_scp import NpyScpWriter
from espnet2.tasks.tts import TTSTask
from espnet2.torch_utils.device_funcs import to_device
from espnet2.torch_utils.set_all_random_seed import set_all_random_seed
from espnet2.tts.duration_calculator import DurationCalculator
from espnet2.tts.fastspeech import FastSpeech
from espnet2.tts.fastspeech2 import FastSpeech2
from espnet2.tts.fastespeech import FastESpeech
from espnet2.tts.tacotron2 import Tacotron2
from espnet2.tts.transformer import Transformer
from espnet2.utils import config_argparse
from espnet2.utils.get_default_kwargs import get_default_kwargs
from espnet2.utils.griffin_lim import Spectrogram2Waveform
from espnet2.utils.nested_dict_action import NestedDictAction
from espnet2.utils.types import str2bool
from espnet2.utils.types import str2triple_str
from espnet2.utils.types import str_or_none
class Text2Speech:
"""Speech2Text class
Examples:
>>> import soundfile
>>> text2speech = Text2Speech("config.yml", "model.pth")
>>> wav = text2speech("Hello World")[0]
>>> soundfile.write("out.wav", wav.numpy(), text2speech.fs, "PCM_16")
"""
def __init__(
self,
train_config: Optional[Union[Path, str]],
model_file: Optional[Union[Path, str]] = None,
threshold: float = 0.5,
minlenratio: float = 0.0,
maxlenratio: float = 10.0,
use_teacher_forcing: bool = False,
use_att_constraint: bool = False,
backward_window: int = 1,
forward_window: int = 3,
speed_control_alpha: float = 1.0,
vocoder_conf: dict = None,
dtype: str = "float32",
device: str = "cpu",
):
assert check_argument_types()
model, train_args = TTSTask.build_model_from_file(
train_config, model_file, device
)
model.to(dtype=getattr(torch, dtype)).eval()
self.device = device
self.dtype = dtype
self.train_args = train_args
self.model = model
self.tts = model.tts
self.normalize = model.normalize
self.feats_extract = model.feats_extract
self.duration_calculator = DurationCalculator()
self.preprocess_fn = TTSTask.build_preprocess_fn(train_args, False)
self.use_teacher_forcing = use_teacher_forcing
logging.info(f"Normalization:\n{self.normalize}")
logging.info(f"TTS:\n{self.tts}")
decode_config = {}
if isinstance(self.tts, (Tacotron2, Transformer)):
decode_config.update(
{
"threshold": threshold,
"maxlenratio": maxlenratio,
"minlenratio": minlenratio,
}
)
if isinstance(self.tts, Tacotron2):
decode_config.update(
{
"use_att_constraint": use_att_constraint,
"forward_window": forward_window,
"backward_window": backward_window,
}
)
if isinstance(self.tts, (FastSpeech, FastSpeech2, FastESpeech)):
decode_config.update({"alpha": speed_control_alpha})
decode_config.update({"use_teacher_forcing": use_teacher_forcing})
self.decode_config = decode_config
if vocoder_conf is None:
vocoder_conf = {}
if self.feats_extract is not None:
vocoder_conf.update(self.feats_extract.get_parameters())
if (
"n_fft" in vocoder_conf
and "n_shift" in vocoder_conf
and "fs" in vocoder_conf
):
self.spc2wav = Spectrogram2Waveform(**vocoder_conf)
logging.info(f"Vocoder: {self.spc2wav}")
else:
self.spc2wav = None
logging.info("Vocoder is not used because vocoder_conf is not sufficient")
@torch.no_grad()
def __call__(
self,
text: Union[str, torch.Tensor, np.ndarray],
speech: Union[torch.Tensor, np.ndarray] = None,
durations: Union[torch.Tensor, np.ndarray] = None,
ref_embs: torch.Tensor = None,
spembs: Union[torch.Tensor, np.ndarray] = None, # new addition
fg_inds: torch.Tensor = None,
):
assert check_argument_types()
if self.use_speech and speech is None:
raise RuntimeError("missing required argument: 'speech'")
if isinstance(text, str):
# str -> np.ndarray
text = self.preprocess_fn("<dummy>", {"text": text})["text"]
batch = {"text": text, "ref_embs": ref_embs, "ar_prior_inference": True, "fg_inds": fg_inds} # TC marker
if speech is not None:
batch["speech"] = speech
if durations is not None:
batch["durations"] = durations
if spembs is not None:
batch["spembs"] = spembs
batch = to_device(batch, self.device)
outs, outs_denorm, probs, att_ws, ref_embs, ar_prior_loss = self.model.inference(
**batch, **self.decode_config
)
if att_ws is not None:
duration, focus_rate = self.duration_calculator(att_ws)
else:
duration, focus_rate = None, None
if self.spc2wav is not None:
wav = torch.tensor(self.spc2wav(outs_denorm.cpu().numpy()))
else:
wav = None
return wav, outs, outs_denorm, probs, att_ws, duration, focus_rate, ref_embs
@property
def fs(self) -> Optional[int]:
if self.spc2wav is not None:
return self.spc2wav.fs
else:
return None
@property
def use_speech(self) -> bool:
"""Check whether to require speech in inference.
Returns:
bool: True if speech is required else False.
"""
# TC marker, oorspr false -> set false for test_ref_embs, but true if testing wo duration
return self.use_teacher_forcing or getattr(self.tts, "use_gst", False)
def inference(
output_dir: str,
batch_size: int,
dtype: str,
ngpu: int,
seed: int,
num_workers: int,
log_level: Union[int, str],
data_path_and_name_and_type: Sequence[Tuple[str, str, str]],
key_file: Optional[str],
train_config: Optional[str],
model_file: Optional[str],
ref_embs: Optional[str],
threshold: float,
minlenratio: float,
maxlenratio: float,
use_teacher_forcing: bool,
use_att_constraint: bool,
backward_window: int,
forward_window: int,
speed_control_alpha: float,
allow_variable_data_keys: bool,
vocoder_conf: dict,
):
"""Perform TTS model decoding."""
assert check_argument_types()
if batch_size > 1:
raise NotImplementedError("batch decoding is not implemented")
if ngpu > 1:
raise NotImplementedError("only single GPU decoding is supported")
logging.basicConfig(
level=log_level,
format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s",
)
if len(ref_embs) > 0:
ref_emb_in = torch.load(ref_embs).squeeze(0)
else:
ref_emb_in = None
if ngpu >= 1:
device = "cuda"
else:
device = "cpu"
# 1. Set random-seed
set_all_random_seed(seed)
# 2. Build model
text2speech = Text2Speech(
train_config=train_config,
model_file=model_file,
threshold=threshold,
maxlenratio=maxlenratio,
minlenratio=minlenratio,
use_teacher_forcing=use_teacher_forcing,
use_att_constraint=use_att_constraint,
backward_window=backward_window,
forward_window=forward_window,
speed_control_alpha=speed_control_alpha,
vocoder_conf=vocoder_conf,
dtype=dtype,
device=device,
)
# 3. Build data-iterator
if not text2speech.use_speech:
data_path_and_name_and_type = list(
filter(lambda x: x[1] != "speech", data_path_and_name_and_type)
)
loader = TTSTask.build_streaming_iterator(
data_path_and_name_and_type,
dtype=dtype,
batch_size=batch_size,
key_file=key_file,
num_workers=num_workers,
preprocess_fn=TTSTask.build_preprocess_fn(text2speech.train_args, False),
collate_fn=TTSTask.build_collate_fn(text2speech.train_args, False),
allow_variable_data_keys=allow_variable_data_keys,
inference=True,
)
# 6. Start for-loop
output_dir = Path(output_dir)
(output_dir / "norm").mkdir(parents=True, exist_ok=True)
(output_dir / "denorm").mkdir(parents=True, exist_ok=True)
(output_dir / "speech_shape").mkdir(parents=True, exist_ok=True)
(output_dir / "wav").mkdir(parents=True, exist_ok=True)
(output_dir / "att_ws").mkdir(parents=True, exist_ok=True)
(output_dir / "probs").mkdir(parents=True, exist_ok=True)
(output_dir / "durations").mkdir(parents=True, exist_ok=True)
(output_dir / "focus_rates").mkdir(parents=True, exist_ok=True)
# Lazy load to avoid the backend error
matplotlib.use("Agg")
import matplotlib.pyplot as plt
from matplotlib.ticker import MaxNLocator
with NpyScpWriter(
output_dir / "norm",
output_dir / "norm/feats.scp",
) as norm_writer, NpyScpWriter(
output_dir / "denorm", output_dir / "denorm/feats.scp"
) as denorm_writer, open(
output_dir / "speech_shape/speech_shape", "w"
) as shape_writer, open(
output_dir / "durations/durations", "w"
) as duration_writer, open(
output_dir / "focus_rates/focus_rates", "w"
) as focus_rate_writer, open(
output_dir / "ref_embs", "w"
) as ref_embs_writer:
ref_embs_list = []
ref_embs_dict = defaultdict(list)
for idx, (keys, batch) in enumerate(loader, 1):
assert isinstance(batch, dict), type(batch)
assert all(isinstance(s, str) for s in keys), keys
_bs = len(next(iter(batch.values())))
assert _bs == 1, _bs
# Change to single sequence and remove *_length
# because inference() requires 1-seq, not mini-batch.
batch = {k: v[0] for k, v in batch.items() if not k.endswith("_lengths")}
start_time = time.perf_counter()
wav, outs, outs_denorm, probs, att_ws, duration, focus_rate, \
ref_embs = text2speech(ref_embs=ref_emb_in, **batch)
key = keys[0]
insize = next(iter(batch.values())).size(0) + 1
logging.info(
"inference speed = {:.1f} frames / sec.".format(
int(outs.size(0)) / (time.perf_counter() - start_time)
)
)
logging.info(f"{key} (size:{insize}->{outs.size(0)})")
if outs.size(0) == insize * maxlenratio:
logging.warning(f"output length reaches maximum length ({key}).")
norm_writer[key] = outs.cpu().numpy()
shape_writer.write(f"{key} " + ",".join(map(str, outs.shape)) + "\n")
denorm_writer[key] = outs_denorm.cpu().numpy()
if duration is not None:
# Save duration and fucus rates
duration_writer.write(
f"{key} " + " ".join(map(str, duration.cpu().numpy())) + "\n"
)
focus_rate_writer.write(f"{key} {float(focus_rate):.5f}\n")
# Plot attention weight
att_ws = att_ws.cpu().numpy()
if att_ws.ndim == 2:
att_ws = att_ws[None][None]
elif att_ws.ndim != 4:
raise RuntimeError(f"Must be 2 or 4 dimension: {att_ws.ndim}")
w, h = plt.figaspect(att_ws.shape[0] / att_ws.shape[1])
fig = plt.Figure(
figsize=(
w * 1.3 * min(att_ws.shape[0], 2.5),
h * 1.3 * min(att_ws.shape[1], 2.5),
)
)
fig.suptitle(f"{key}")
axes = fig.subplots(att_ws.shape[0], att_ws.shape[1])
if len(att_ws) == 1:
axes = [[axes]]
for ax, att_w in zip(axes, att_ws):
for ax_, att_w_ in zip(ax, att_w):
ax_.imshow(att_w_.astype(np.float32), aspect="auto")
ax_.set_xlabel("Input")
ax_.set_ylabel("Output")
ax_.xaxis.set_major_locator(MaxNLocator(integer=True))
ax_.yaxis.set_major_locator(MaxNLocator(integer=True))
fig.set_tight_layout({"rect": [0, 0.03, 1, 0.95]})
fig.savefig(output_dir / f"att_ws/{key}.png")
fig.clf()
if probs is not None:
# Plot stop token prediction
probs = probs.cpu().numpy()
fig = plt.Figure()
ax = fig.add_subplot(1, 1, 1)
ax.plot(probs)
ax.set_title(f"{key}")
ax.set_xlabel("Output")
ax.set_ylabel("Stop probability")
ax.set_ylim(0, 1)
ax.grid(which="both")
fig.set_tight_layout(True)
fig.savefig(output_dir / f"probs/{key}.png")
fig.clf()
# TODO(kamo): Write scp
if wav is not None:
sf.write(
f"{output_dir}/wav/{key}.wav", wav.numpy(), text2speech.fs, "PCM_16"
)
if ref_embs is not None:
ref_emb_key = -1
for index, ref_emb in enumerate(ref_embs_list):
if torch.equal(ref_emb, ref_embs):
ref_emb_key = index
if ref_emb_key == -1:
ref_emb_key = len(ref_embs_list)
ref_embs_list.append(ref_embs)
ref_embs_dict[ref_emb_key].append(key)
ref_embs_writer.write(json.dumps(ref_embs_dict))
for index, ref_emb in enumerate(ref_embs_list):
filename = "ref_embs_" + str(index) + ".pt"
torch.save(ref_emb, output_dir / filename)
# remove duration related files if attention is not provided
if att_ws is None:
shutil.rmtree(output_dir / "att_ws")
shutil.rmtree(output_dir / "durations")
shutil.rmtree(output_dir / "focus_rates")
if probs is None:
shutil.rmtree(output_dir / "probs")
def get_parser():
"""Get argument parser."""
parser = config_argparse.ArgumentParser(
description="TTS Decode",
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
)
# Note(kamo): Use "_" instead of "-" as separator.
# "-" is confusing if written in yaml.
parser.add_argument(
"--log_level",
type=lambda x: x.upper(),
default="INFO",
choices=("CRITICAL", "ERROR", "WARNING", "INFO", "DEBUG", "NOTSET"),
help="The verbose level of logging",
)
parser.add_argument(
"--output_dir",
type=str,
required=True,
help="The path of output directory",
)
parser.add_argument(
"--ngpu",
type=int,
default=0,
help="The number of gpus. 0 indicates CPU mode",
)
parser.add_argument(
"--seed",
type=int,
default=0,
help="Random seed",
)
parser.add_argument(
"--dtype",
default="float32",
choices=["float16", "float32", "float64"],
help="Data type",
)
parser.add_argument(
"--num_workers",
type=int,
default=1,
help="The number of workers used for DataLoader",
)
parser.add_argument(
"--batch_size",
type=int,
default=1,
help="The batch size for inference",
)
group = parser.add_argument_group("Input data related")
group.add_argument(
"--data_path_and_name_and_type",
type=str2triple_str,
required=True,
action="append",
)
group.add_argument(
"--key_file",
type=str_or_none,
)
group.add_argument(
"--allow_variable_data_keys",
type=str2bool,
default=False,
)
group.add_argument(
"--ref_embs",
type=str,
default=False,
)
group = parser.add_argument_group("The model configuration related")
group.add_argument(
"--train_config",
type=str,
help="Training configuration file.",
)
group.add_argument(
"--model_file",
type=str,
help="Model parameter file.",
)
group = parser.add_argument_group("Decoding related")
group.add_argument(
"--maxlenratio",
type=float,
default=10.0,
help="Maximum length ratio in decoding",
)
group.add_argument(
"--minlenratio",
type=float,
default=0.0,
help="Minimum length ratio in decoding",
)
group.add_argument(
"--threshold",
type=float,
default=0.5,
help="Threshold value in decoding",
)
group.add_argument(
"--use_att_constraint",
type=str2bool,
default=False,
help="Whether to use attention constraint",
)
group.add_argument(
"--backward_window",
type=int,
default=1,
help="Backward window value in attention constraint",
)
group.add_argument(
"--forward_window",
type=int,
default=3,
help="Forward window value in attention constraint",
)
group.add_argument(
"--use_teacher_forcing",
type=str2bool,
default=False,
help="Whether to use teacher forcing",
)
parser.add_argument(
"--speed_control_alpha",
type=float,
default=1.0,
help="Alpha in FastSpeech to change the speed of generated speech",
)
group = parser.add_argument_group("Grriffin-Lim related")
group.add_argument(
"--vocoder_conf",
action=NestedDictAction,
default=get_default_kwargs(Spectrogram2Waveform),
help="The configuration for Grriffin-Lim",
)
return parser
def main(cmd=None):
"""Run TTS model decoding."""
print(get_commandline_args(), file=sys.stderr)
parser = get_parser()
args = parser.parse_args(cmd)
kwargs = vars(args)
kwargs.pop("config", None)
inference(**kwargs)
if __name__ == "__main__":
main()
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