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import os
import sys
sys.path.append(os.getcwd())
import argparse
import time
from importlib.resources import files
import torch
import torchaudio
from accelerate import Accelerator
from tqdm import tqdm
from f5_tts.eval.utils_eval import (
get_inference_prompt,
get_librispeech_test_clean_metainfo,
get_seedtts_testset_metainfo,
)
from f5_tts.infer.utils_infer import load_checkpoint, load_vocoder
from f5_tts.model import CFM, DiT, UNetT
from f5_tts.model.utils import get_tokenizer
accelerator = Accelerator()
device = f"cuda:{accelerator.process_index}"
# --------------------- Dataset Settings -------------------- #
target_sample_rate = 24000
n_mel_channels = 100
hop_length = 256
win_length = 1024
n_fft = 1024
target_rms = 0.1
tokenizer = "pinyin"
rel_path = str(files("f5_tts").joinpath("../../"))
def main():
# ---------------------- infer setting ---------------------- #
parser = argparse.ArgumentParser(description="batch inference")
parser.add_argument("-s", "--seed", default=None, type=int)
parser.add_argument("-d", "--dataset", default="Emilia_ZH_EN")
parser.add_argument("-n", "--expname", required=True)
parser.add_argument("-c", "--ckptstep", default=1200000, type=int)
parser.add_argument("-m", "--mel_spec_type", default="vocos", type=str, choices=["bigvgan", "vocos"])
parser.add_argument("-nfe", "--nfestep", default=32, type=int)
parser.add_argument("-o", "--odemethod", default="euler")
parser.add_argument("-ss", "--swaysampling", default=-1, type=float)
parser.add_argument("-t", "--testset", required=True)
args = parser.parse_args()
seed = args.seed
dataset_name = args.dataset
exp_name = args.expname
ckpt_step = args.ckptstep
ckpt_path = rel_path + f"/ckpts/{exp_name}/model_{ckpt_step}.pt"
mel_spec_type = args.mel_spec_type
nfe_step = args.nfestep
ode_method = args.odemethod
sway_sampling_coef = args.swaysampling
testset = args.testset
infer_batch_size = 1 # max frames. 1 for ddp single inference (recommended)
cfg_strength = 2.0
speed = 1.0
use_truth_duration = False
no_ref_audio = False
if exp_name == "F5TTS_Base":
model_cls = DiT
model_cfg = dict(dim=1024, depth=22, heads=16, ff_mult=2, text_dim=512, conv_layers=4)
elif exp_name == "E2TTS_Base":
model_cls = UNetT
model_cfg = dict(dim=1024, depth=24, heads=16, ff_mult=4)
if testset == "ls_pc_test_clean":
metalst = rel_path + "/data/librispeech_pc_test_clean_cross_sentence.lst"
librispeech_test_clean_path = "<SOME_PATH>/LibriSpeech/test-clean" # test-clean path
metainfo = get_librispeech_test_clean_metainfo(metalst, librispeech_test_clean_path)
elif testset == "seedtts_test_zh":
metalst = rel_path + "/data/seedtts_testset/zh/meta.lst"
metainfo = get_seedtts_testset_metainfo(metalst)
elif testset == "seedtts_test_en":
metalst = rel_path + "/data/seedtts_testset/en/meta.lst"
metainfo = get_seedtts_testset_metainfo(metalst)
# path to save genereted wavs
output_dir = (
f"{rel_path}/"
f"results/{exp_name}_{ckpt_step}/{testset}/"
f"seed{seed}_{ode_method}_nfe{nfe_step}_{mel_spec_type}"
f"{f'_ss{sway_sampling_coef}' if sway_sampling_coef else ''}"
f"_cfg{cfg_strength}_speed{speed}"
f"{'_gt-dur' if use_truth_duration else ''}"
f"{'_no-ref-audio' if no_ref_audio else ''}"
)
# -------------------------------------------------#
use_ema = True
prompts_all = get_inference_prompt(
metainfo,
speed=speed,
tokenizer=tokenizer,
target_sample_rate=target_sample_rate,
n_mel_channels=n_mel_channels,
hop_length=hop_length,
mel_spec_type=mel_spec_type,
target_rms=target_rms,
use_truth_duration=use_truth_duration,
infer_batch_size=infer_batch_size,
)
# Vocoder model
local = False
if mel_spec_type == "vocos":
vocoder_local_path = "../checkpoints/charactr/vocos-mel-24khz"
elif mel_spec_type == "bigvgan":
vocoder_local_path = "../checkpoints/bigvgan_v2_24khz_100band_256x"
vocoder = load_vocoder(vocoder_name=mel_spec_type, is_local=local, local_path=vocoder_local_path)
# Tokenizer
vocab_char_map, vocab_size = get_tokenizer(dataset_name, tokenizer)
# Model
model = CFM(
transformer=model_cls(**model_cfg, text_num_embeds=vocab_size, mel_dim=n_mel_channels),
mel_spec_kwargs=dict(
n_fft=n_fft,
hop_length=hop_length,
win_length=win_length,
n_mel_channels=n_mel_channels,
target_sample_rate=target_sample_rate,
mel_spec_type=mel_spec_type,
),
odeint_kwargs=dict(
method=ode_method,
),
vocab_char_map=vocab_char_map,
).to(device)
dtype = torch.float32 if mel_spec_type == "bigvgan" else None
model = load_checkpoint(model, ckpt_path, device, dtype=dtype, use_ema=use_ema)
if not os.path.exists(output_dir) and accelerator.is_main_process:
os.makedirs(output_dir)
# start batch inference
accelerator.wait_for_everyone()
start = time.time()
with accelerator.split_between_processes(prompts_all) as prompts:
for prompt in tqdm(prompts, disable=not accelerator.is_local_main_process):
utts, ref_rms_list, ref_mels, ref_mel_lens, total_mel_lens, final_text_list = prompt
ref_mels = ref_mels.to(device)
ref_mel_lens = torch.tensor(ref_mel_lens, dtype=torch.long).to(device)
total_mel_lens = torch.tensor(total_mel_lens, dtype=torch.long).to(device)
# Inference
with torch.inference_mode():
generated, _ = model.sample(
cond=ref_mels,
text=final_text_list,
duration=total_mel_lens,
lens=ref_mel_lens,
steps=nfe_step,
cfg_strength=cfg_strength,
sway_sampling_coef=sway_sampling_coef,
no_ref_audio=no_ref_audio,
seed=seed,
)
# Final result
for i, gen in enumerate(generated):
gen = gen[ref_mel_lens[i] : total_mel_lens[i], :].unsqueeze(0)
gen_mel_spec = gen.permute(0, 2, 1)
if mel_spec_type == "vocos":
generated_wave = vocoder.decode(gen_mel_spec)
elif mel_spec_type == "bigvgan":
generated_wave = vocoder(gen_mel_spec)
if ref_rms_list[i] < target_rms:
generated_wave = generated_wave * ref_rms_list[i] / target_rms
torchaudio.save(f"{output_dir}/{utts[i]}.wav", generated_wave.squeeze(0).cpu(), target_sample_rate)
accelerator.wait_for_everyone()
if accelerator.is_main_process:
timediff = time.time() - start
print(f"Done batch inference in {timediff / 60 :.2f} minutes.")
if __name__ == "__main__":
main()
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