src/f5_tts/train/finetune_gradio.py

import threading
import queue
import re

import gc
import json
import os
import platform
import psutil
import random
import signal
import shutil
import subprocess
import sys
import tempfile
import time
from glob import glob

import click
import gradio as gr
import librosa
import numpy as np
import torch
import torchaudio
from datasets import Dataset as Dataset_
from datasets.arrow_writer import ArrowWriter
from safetensors.torch import save_file
from scipy.io import wavfile
from transformers import pipeline
from cached_path import cached_path
from f5_tts.api import F5TTS
from f5_tts.model.utils import convert_char_to_pinyin
from importlib.resources import files

training_process = None
system = platform.system()
python_executable = sys.executable or "python"
tts_api = None
last_checkpoint = ""
last_device = ""
last_ema = None


path_data = str(files("f5_tts").joinpath("../../data"))
path_project_ckpts = str(files("f5_tts").joinpath("../../ckpts"))
file_train = "src/f5_tts/train/finetune_cli.py"

device = "cuda" if torch.cuda.is_available() else "mps" if torch.backends.mps.is_available() else "cpu"

pipe = None


# Save settings from a JSON file
def save_settings(
    project_name,
    exp_name,
    learning_rate,
    batch_size_per_gpu,
    batch_size_type,
    max_samples,
    grad_accumulation_steps,
    max_grad_norm,
    epochs,
    num_warmup_updates,
    save_per_updates,
    last_per_steps,
    finetune,
    file_checkpoint_train,
    tokenizer_type,
    tokenizer_file,
    mixed_precision,
):
    path_project = os.path.join(path_project_ckpts, project_name)
    os.makedirs(path_project, exist_ok=True)
    file_setting = os.path.join(path_project, "setting.json")

    settings = {
        "exp_name": exp_name,
        "learning_rate": learning_rate,
        "batch_size_per_gpu": batch_size_per_gpu,
        "batch_size_type": batch_size_type,
        "max_samples": max_samples,
        "grad_accumulation_steps": grad_accumulation_steps,
        "max_grad_norm": max_grad_norm,
        "epochs": epochs,
        "num_warmup_updates": num_warmup_updates,
        "save_per_updates": save_per_updates,
        "last_per_steps": last_per_steps,
        "finetune": finetune,
        "file_checkpoint_train": file_checkpoint_train,
        "tokenizer_type": tokenizer_type,
        "tokenizer_file": tokenizer_file,
        "mixed_precision": mixed_precision,
    }
    with open(file_setting, "w") as f:
        json.dump(settings, f, indent=4)
    return "Settings saved!"


# Load settings from a JSON file
def load_settings(project_name):
    project_name = project_name.replace("_pinyin", "").replace("_char", "")
    path_project = os.path.join(path_project_ckpts, project_name)
    file_setting = os.path.join(path_project, "setting.json")

    if not os.path.isfile(file_setting):
        settings = {
            "exp_name": "F5TTS_Base",
            "learning_rate": 1e-05,
            "batch_size_per_gpu": 1000,
            "batch_size_type": "frame",
            "max_samples": 64,
            "grad_accumulation_steps": 1,
            "max_grad_norm": 1,
            "epochs": 100,
            "num_warmup_updates": 2,
            "save_per_updates": 300,
            "last_per_steps": 100,
            "finetune": True,
            "file_checkpoint_train": "",
            "tokenizer_type": "pinyin",
            "tokenizer_file": "",
            "mixed_precision": "none",
        }
        return (
            settings["exp_name"],
            settings["learning_rate"],
            settings["batch_size_per_gpu"],
            settings["batch_size_type"],
            settings["max_samples"],
            settings["grad_accumulation_steps"],
            settings["max_grad_norm"],
            settings["epochs"],
            settings["num_warmup_updates"],
            settings["save_per_updates"],
            settings["last_per_steps"],
            settings["finetune"],
            settings["file_checkpoint_train"],
            settings["tokenizer_type"],
            settings["tokenizer_file"],
            settings["mixed_precision"],
        )

    with open(file_setting, "r") as f:
        settings = json.load(f)
    return (
        settings["exp_name"],
        settings["learning_rate"],
        settings["batch_size_per_gpu"],
        settings["batch_size_type"],
        settings["max_samples"],
        settings["grad_accumulation_steps"],
        settings["max_grad_norm"],
        settings["epochs"],
        settings["num_warmup_updates"],
        settings["save_per_updates"],
        settings["last_per_steps"],
        settings["finetune"],
        settings["file_checkpoint_train"],
        settings["tokenizer_type"],
        settings["tokenizer_file"],
        settings["mixed_precision"],
    )


# Load metadata
def get_audio_duration(audio_path):
    """Calculate the duration of an audio file."""
    audio, sample_rate = torchaudio.load(audio_path)
    num_channels = audio.shape[0]
    return audio.shape[1] / (sample_rate * num_channels)


def clear_text(text):
    """Clean and prepare text by lowering the case and stripping whitespace."""
    return text.lower().strip()


def get_rms(
    y,
    frame_length=2048,
    hop_length=512,
    pad_mode="constant",
):  # https://github.com/RVC-Boss/GPT-SoVITS/blob/main/tools/slicer2.py
    padding = (int(frame_length // 2), int(frame_length // 2))
    y = np.pad(y, padding, mode=pad_mode)

    axis = -1
    # put our new within-frame axis at the end for now
    out_strides = y.strides + tuple([y.strides[axis]])
    # Reduce the shape on the framing axis
    x_shape_trimmed = list(y.shape)
    x_shape_trimmed[axis] -= frame_length - 1
    out_shape = tuple(x_shape_trimmed) + tuple([frame_length])
    xw = np.lib.stride_tricks.as_strided(y, shape=out_shape, strides=out_strides)
    if axis < 0:
        target_axis = axis - 1
    else:
        target_axis = axis + 1
    xw = np.moveaxis(xw, -1, target_axis)
    # Downsample along the target axis
    slices = [slice(None)] * xw.ndim
    slices[axis] = slice(0, None, hop_length)
    x = xw[tuple(slices)]

    # Calculate power
    power = np.mean(np.abs(x) ** 2, axis=-2, keepdims=True)

    return np.sqrt(power)


class Slicer:  # https://github.com/RVC-Boss/GPT-SoVITS/blob/main/tools/slicer2.py
    def __init__(
        self,
        sr: int,
        threshold: float = -40.0,
        min_length: int = 2000,
        min_interval: int = 300,
        hop_size: int = 20,
        max_sil_kept: int = 2000,
    ):
        if not min_length >= min_interval >= hop_size:
            raise ValueError("The following condition must be satisfied: min_length >= min_interval >= hop_size")
        if not max_sil_kept >= hop_size:
            raise ValueError("The following condition must be satisfied: max_sil_kept >= hop_size")
        min_interval = sr * min_interval / 1000
        self.threshold = 10 ** (threshold / 20.0)
        self.hop_size = round(sr * hop_size / 1000)
        self.win_size = min(round(min_interval), 4 * self.hop_size)
        self.min_length = round(sr * min_length / 1000 / self.hop_size)
        self.min_interval = round(min_interval / self.hop_size)
        self.max_sil_kept = round(sr * max_sil_kept / 1000 / self.hop_size)

    def _apply_slice(self, waveform, begin, end):
        if len(waveform.shape) > 1:
            return waveform[:, begin * self.hop_size : min(waveform.shape[1], end * self.hop_size)]
        else:
            return waveform[begin * self.hop_size : min(waveform.shape[0], end * self.hop_size)]

    # @timeit
    def slice(self, waveform):
        if len(waveform.shape) > 1:
            samples = waveform.mean(axis=0)
        else:
            samples = waveform
        if samples.shape[0] <= self.min_length:
            return [waveform]
        rms_list = get_rms(y=samples, frame_length=self.win_size, hop_length=self.hop_size).squeeze(0)
        sil_tags = []
        silence_start = None
        clip_start = 0
        for i, rms in enumerate(rms_list):
            # Keep looping while frame is silent.
            if rms < self.threshold:
                # Record start of silent frames.
                if silence_start is None:
                    silence_start = i
                continue
            # Keep looping while frame is not silent and silence start has not been recorded.
            if silence_start is None:
                continue
            # Clear recorded silence start if interval is not enough or clip is too short
            is_leading_silence = silence_start == 0 and i > self.max_sil_kept
            need_slice_middle = i - silence_start >= self.min_interval and i - clip_start >= self.min_length
            if not is_leading_silence and not need_slice_middle:
                silence_start = None
                continue
            # Need slicing. Record the range of silent frames to be removed.
            if i - silence_start <= self.max_sil_kept:
                pos = rms_list[silence_start : i + 1].argmin() + silence_start
                if silence_start == 0:
                    sil_tags.append((0, pos))
                else:
                    sil_tags.append((pos, pos))
                clip_start = pos
            elif i - silence_start <= self.max_sil_kept * 2:
                pos = rms_list[i - self.max_sil_kept : silence_start + self.max_sil_kept + 1].argmin()
                pos += i - self.max_sil_kept
                pos_l = rms_list[silence_start : silence_start + self.max_sil_kept + 1].argmin() + silence_start
                pos_r = rms_list[i - self.max_sil_kept : i + 1].argmin() + i - self.max_sil_kept
                if silence_start == 0:
                    sil_tags.append((0, pos_r))
                    clip_start = pos_r
                else:
                    sil_tags.append((min(pos_l, pos), max(pos_r, pos)))
                    clip_start = max(pos_r, pos)
            else:
                pos_l = rms_list[silence_start : silence_start + self.max_sil_kept + 1].argmin() + silence_start
                pos_r = rms_list[i - self.max_sil_kept : i + 1].argmin() + i - self.max_sil_kept
                if silence_start == 0:
                    sil_tags.append((0, pos_r))
                else:
                    sil_tags.append((pos_l, pos_r))
                clip_start = pos_r
            silence_start = None
        # Deal with trailing silence.
        total_frames = rms_list.shape[0]
        if silence_start is not None and total_frames - silence_start >= self.min_interval:
            silence_end = min(total_frames, silence_start + self.max_sil_kept)
            pos = rms_list[silence_start : silence_end + 1].argmin() + silence_start
            sil_tags.append((pos, total_frames + 1))
        # Apply and return slices.
        ####音频+起始时间+终止时间
        if len(sil_tags) == 0:
            return [[waveform, 0, int(total_frames * self.hop_size)]]
        else:
            chunks = []
            if sil_tags[0][0] > 0:
                chunks.append([self._apply_slice(waveform, 0, sil_tags[0][0]), 0, int(sil_tags[0][0] * self.hop_size)])
            for i in range(len(sil_tags) - 1):
                chunks.append(
                    [
                        self._apply_slice(waveform, sil_tags[i][1], sil_tags[i + 1][0]),
                        int(sil_tags[i][1] * self.hop_size),
                        int(sil_tags[i + 1][0] * self.hop_size),
                    ]
                )
            if sil_tags[-1][1] < total_frames:
                chunks.append(
                    [
                        self._apply_slice(waveform, sil_tags[-1][1], total_frames),
                        int(sil_tags[-1][1] * self.hop_size),
                        int(total_frames * self.hop_size),
                    ]
                )
            return chunks


# terminal
def terminate_process_tree(pid, including_parent=True):
    try:
        parent = psutil.Process(pid)
    except psutil.NoSuchProcess:
        # Process already terminated
        return

    children = parent.children(recursive=True)
    for child in children:
        try:
            os.kill(child.pid, signal.SIGTERM)  # or signal.SIGKILL
        except OSError:
            pass
    if including_parent:
        try:
            os.kill(parent.pid, signal.SIGTERM)  # or signal.SIGKILL
        except OSError:
            pass


def terminate_process(pid):
    if system == "Windows":
        cmd = f"taskkill /t /f /pid {pid}"
        os.system(cmd)
    else:
        terminate_process_tree(pid)


def start_training(
    dataset_name="",
    exp_name="F5TTS_Base",
    learning_rate=1e-4,
    batch_size_per_gpu=400,
    batch_size_type="frame",
    max_samples=64,
    grad_accumulation_steps=1,
    max_grad_norm=1.0,
    epochs=11,
    num_warmup_updates=200,
    save_per_updates=400,
    last_per_steps=800,
    finetune=True,
    file_checkpoint_train="",
    tokenizer_type="pinyin",
    tokenizer_file="",
    mixed_precision="fp16",
    stream=False,
):
    global training_process, tts_api, stop_signal

    if tts_api is not None:
        del tts_api
        gc.collect()
        torch.cuda.empty_cache()
        tts_api = None

    path_project = os.path.join(path_data, dataset_name)

    if not os.path.isdir(path_project):
        yield (
            f"There is not project with name {dataset_name}",
            gr.update(interactive=True),
            gr.update(interactive=False),
        )
        return

    file_raw = os.path.join(path_project, "raw.arrow")
    if not os.path.isfile(file_raw):
        yield f"There is no file {file_raw}", gr.update(interactive=True), gr.update(interactive=False)
        return

    # Check if a training process is already running
    if training_process is not None:
        return "Train run already!", gr.update(interactive=False), gr.update(interactive=True)

    yield "start train", gr.update(interactive=False), gr.update(interactive=False)

    # Command to run the training script with the specified arguments

    if tokenizer_file == "":
        if dataset_name.endswith("_pinyin"):
            tokenizer_type = "pinyin"
        elif dataset_name.endswith("_char"):
            tokenizer_type = "char"
    else:
        tokenizer_type = "custom"

    dataset_name = dataset_name.replace("_pinyin", "").replace("_char", "")

    if mixed_precision != "none":
        fp16 = f"--mixed_precision={mixed_precision}"
    else:
        fp16 = ""

    cmd = (
        f"accelerate launch {fp16} {file_train} --exp_name {exp_name} "
        f"--learning_rate {learning_rate} "
        f"--batch_size_per_gpu {batch_size_per_gpu} "
        f"--batch_size_type {batch_size_type} "
        f"--max_samples {max_samples} "
        f"--grad_accumulation_steps {grad_accumulation_steps} "
        f"--max_grad_norm {max_grad_norm} "
        f"--epochs {epochs} "
        f"--num_warmup_updates {num_warmup_updates} "
        f"--save_per_updates {save_per_updates} "
        f"--last_per_steps {last_per_steps} "
        f"--dataset_name {dataset_name}"
    )

    if finetune:
        cmd += f" --finetune {finetune}"

    if file_checkpoint_train != "":
        cmd += f" --file_checkpoint_train {file_checkpoint_train}"

    if tokenizer_file != "":
        cmd += f" --tokenizer_path {tokenizer_file}"

    cmd += f" --tokenizer {tokenizer_type} "

    print(cmd)

    save_settings(
        dataset_name,
        exp_name,
        learning_rate,
        batch_size_per_gpu,
        batch_size_type,
        max_samples,
        grad_accumulation_steps,
        max_grad_norm,
        epochs,
        num_warmup_updates,
        save_per_updates,
        last_per_steps,
        finetune,
        file_checkpoint_train,
        tokenizer_type,
        tokenizer_file,
        mixed_precision,
    )

    try:
        if not stream:
            # Start the training process
            training_process = subprocess.Popen(cmd, shell=True)

            time.sleep(5)
            yield "train start", gr.update(interactive=False), gr.update(interactive=True)

            # Wait for the training process to finish
            training_process.wait()
        else:

            def stream_output(pipe, output_queue):
                try:
                    for line in iter(pipe.readline, ""):
                        output_queue.put(line)
                except Exception as e:
                    output_queue.put(f"Error reading pipe: {str(e)}")
                finally:
                    pipe.close()

            env = os.environ.copy()
            env["PYTHONUNBUFFERED"] = "1"

            training_process = subprocess.Popen(
                cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, bufsize=1, env=env
            )
            yield "Training started...", gr.update(interactive=False), gr.update(interactive=True)

            stdout_queue = queue.Queue()
            stderr_queue = queue.Queue()

            stdout_thread = threading.Thread(target=stream_output, args=(training_process.stdout, stdout_queue))
            stderr_thread = threading.Thread(target=stream_output, args=(training_process.stderr, stderr_queue))
            stdout_thread.daemon = True
            stderr_thread.daemon = True
            stdout_thread.start()
            stderr_thread.start()
            stop_signal = False
            while True:
                if stop_signal:
                    training_process.terminate()
                    time.sleep(0.5)
                    if training_process.poll() is None:
                        training_process.kill()
                    yield "Training stopped by user.", gr.update(interactive=True), gr.update(interactive=False)
                    break

                process_status = training_process.poll()

                # Handle stdout
                try:
                    while True:
                        output = stdout_queue.get_nowait()
                        print(output, end="")
                        match = re.search(
                            r"Epoch (\d+)/(\d+):\s+(\d+)%\|.*\[(\d+:\d+)<.*?loss=(\d+\.\d+), step=(\d+)", output
                        )
                        if match:
                            current_epoch = match.group(1)
                            total_epochs = match.group(2)
                            percent_complete = match.group(3)
                            elapsed_time = match.group(4)
                            loss = match.group(5)
                            current_step = match.group(6)
                            message = (
                                f"Epoch: {current_epoch}/{total_epochs}, "
                                f"Progress: {percent_complete}%, "
                                f"Elapsed Time: {elapsed_time}, "
                                f"Loss: {loss}, "
                                f"Step: {current_step}"
                            )
                            yield message, gr.update(interactive=False), gr.update(interactive=True)
                        elif output.strip():
                            yield output, gr.update(interactive=False), gr.update(interactive=True)
                except queue.Empty:
                    pass

                # Handle stderr
                try:
                    while True:
                        error_output = stderr_queue.get_nowait()
                        print(error_output, end="")
                        if error_output.strip():
                            yield f"{error_output.strip()}", gr.update(interactive=False), gr.update(interactive=True)
                except queue.Empty:
                    pass

                if process_status is not None and stdout_queue.empty() and stderr_queue.empty():
                    if process_status != 0:
                        yield (
                            f"Process crashed with exit code {process_status}!",
                            gr.update(interactive=False),
                            gr.update(interactive=True),
                        )
                    else:
                        yield "Training complete!", gr.update(interactive=False), gr.update(interactive=True)
                    break

                # Small sleep to prevent CPU thrashing
                time.sleep(0.1)

            # Clean up
            training_process.stdout.close()
            training_process.stderr.close()
            training_process.wait()

        time.sleep(1)

        if training_process is None:
            text_info = "train stop"
        else:
            text_info = "train complete !"

    except Exception as e:  # Catch all exceptions
        # Ensure that we reset the training process variable in case of an error
        text_info = f"An error occurred: {str(e)}"

    training_process = None

    yield text_info, gr.update(interactive=True), gr.update(interactive=False)


def stop_training():
    global training_process, stop_signal

    if training_process is None:
        return "Train not run !", gr.update(interactive=True), gr.update(interactive=False)
    terminate_process_tree(training_process.pid)
    # training_process = None
    stop_signal = True
    return "train stop", gr.update(interactive=True), gr.update(interactive=False)


def get_list_projects():
    project_list = []
    for folder in os.listdir(path_data):
        path_folder = os.path.join(path_data, folder)
        if not os.path.isdir(path_folder):
            continue
        folder = folder.lower()
        if folder == "emilia_zh_en_pinyin":
            continue
        project_list.append(folder)

    projects_selelect = None if not project_list else project_list[-1]

    return project_list, projects_selelect


def create_data_project(name, tokenizer_type):
    name += "_" + tokenizer_type
    os.makedirs(os.path.join(path_data, name), exist_ok=True)
    os.makedirs(os.path.join(path_data, name, "dataset"), exist_ok=True)
    project_list, projects_selelect = get_list_projects()
    return gr.update(choices=project_list, value=name)


def transcribe(file_audio, language="english"):
    global pipe

    if pipe is None:
        pipe = pipeline(
            "automatic-speech-recognition",
            model="openai/whisper-large-v3-turbo",
            torch_dtype=torch.float16,
            device=device,
        )

    text_transcribe = pipe(
        file_audio,
        chunk_length_s=30,
        batch_size=128,
        generate_kwargs={"task": "transcribe", "language": language},
        return_timestamps=False,
    )["text"].strip()
    return text_transcribe


def transcribe_all(name_project, audio_files, language, user=False, progress=gr.Progress()):
    path_project = os.path.join(path_data, name_project)
    path_dataset = os.path.join(path_project, "dataset")
    path_project_wavs = os.path.join(path_project, "wavs")
    file_metadata = os.path.join(path_project, "metadata.csv")

    if not user:
        if audio_files is None:
            return "You need to load an audio file."

    if os.path.isdir(path_project_wavs):
        shutil.rmtree(path_project_wavs)

    if os.path.isfile(file_metadata):
        os.remove(file_metadata)

    os.makedirs(path_project_wavs, exist_ok=True)

    if user:
        file_audios = [
            file
            for format in ("*.wav", "*.ogg", "*.opus", "*.mp3", "*.flac")
            for file in glob(os.path.join(path_dataset, format))
        ]
        if file_audios == []:
            return "No audio file was found in the dataset."
    else:
        file_audios = audio_files

    alpha = 0.5
    _max = 1.0
    slicer = Slicer(24000)

    num = 0
    error_num = 0
    data = ""
    for file_audio in progress.tqdm(file_audios, desc="transcribe files", total=len((file_audios))):
        audio, _ = librosa.load(file_audio, sr=24000, mono=True)

        list_slicer = slicer.slice(audio)
        for chunk, start, end in progress.tqdm(list_slicer, total=len(list_slicer), desc="slicer files"):
            name_segment = os.path.join(f"segment_{num}")
            file_segment = os.path.join(path_project_wavs, f"{name_segment}.wav")

            tmp_max = np.abs(chunk).max()
            if tmp_max > 1:
                chunk /= tmp_max
            chunk = (chunk / tmp_max * (_max * alpha)) + (1 - alpha) * chunk
            wavfile.write(file_segment, 24000, (chunk * 32767).astype(np.int16))

            try:
                text = transcribe(file_segment, language)
                text = text.lower().strip().replace('"', "")

                data += f"{name_segment}|{text}\n"

                num += 1
            except:  # noqa: E722
                error_num += 1

    with open(file_metadata, "w", encoding="utf-8-sig") as f:
        f.write(data)

    if error_num != []:
        error_text = f"\nerror files : {error_num}"
    else:
        error_text = ""

    return f"transcribe complete samples : {num}\npath : {path_project_wavs}{error_text}"


def format_seconds_to_hms(seconds):
    hours = int(seconds / 3600)
    minutes = int((seconds % 3600) / 60)
    seconds = seconds % 60
    return "{:02d}:{:02d}:{:02d}".format(hours, minutes, int(seconds))


def create_metadata(name_project, ch_tokenizer, progress=gr.Progress()):
    path_project = os.path.join(path_data, name_project)
    path_project_wavs = os.path.join(path_project, "wavs")
    file_metadata = os.path.join(path_project, "metadata.csv")
    file_raw = os.path.join(path_project, "raw.arrow")
    file_duration = os.path.join(path_project, "duration.json")
    file_vocab = os.path.join(path_project, "vocab.txt")

    if not os.path.isfile(file_metadata):
        return "The file was not found in " + file_metadata, ""

    with open(file_metadata, "r", encoding="utf-8-sig") as f:
        data = f.read()

    audio_path_list = []
    text_list = []
    duration_list = []

    count = data.split("\n")
    lenght = 0
    result = []
    error_files = []
    text_vocab_set = set()
    for line in progress.tqdm(data.split("\n"), total=count):
        sp_line = line.split("|")
        if len(sp_line) != 2:
            continue
        name_audio, text = sp_line[:2]

        file_audio = os.path.join(path_project_wavs, name_audio + ".wav")

        if not os.path.isfile(file_audio):
            error_files.append([file_audio, "error path"])
            continue

        try:
            duration = get_audio_duration(file_audio)
        except Exception as e:
            error_files.append([file_audio, "duration"])
            print(f"Error processing {file_audio}: {e}")
            continue

        if duration < 1 and duration > 25:
            error_files.append([file_audio, "duration < 1 and > 25 "])
            continue
        if len(text) < 4:
            error_files.append([file_audio, "very small text len 3"])
            continue

        text = clear_text(text)
        text = convert_char_to_pinyin([text], polyphone=True)[0]

        audio_path_list.append(file_audio)
        duration_list.append(duration)
        text_list.append(text)

        result.append({"audio_path": file_audio, "text": text, "duration": duration})
        if ch_tokenizer:
            text_vocab_set.update(list(text))

        lenght += duration

    if duration_list == []:
        return f"Error: No audio files found in the specified path : {path_project_wavs}", ""

    min_second = round(min(duration_list), 2)
    max_second = round(max(duration_list), 2)

    with ArrowWriter(path=file_raw, writer_batch_size=1) as writer:
        for line in progress.tqdm(result, total=len(result), desc="prepare data"):
            writer.write(line)

    with open(file_duration, "w") as f:
        json.dump({"duration": duration_list}, f, ensure_ascii=False)

    new_vocal = ""
    if not ch_tokenizer:
        if not os.path.isfile(file_vocab):
            file_vocab_finetune = os.path.join(path_data, "Emilia_ZH_EN_pinyin/vocab.txt")
            if not os.path.isfile(file_vocab_finetune):
                return "Error: Vocabulary file 'Emilia_ZH_EN_pinyin' not found!", ""
            shutil.copy2(file_vocab_finetune, file_vocab)

        with open(file_vocab, "r", encoding="utf-8-sig") as f:
            vocab_char_map = {}
            for i, char in enumerate(f):
                vocab_char_map[char[:-1]] = i
        vocab_size = len(vocab_char_map)

    else:
        with open(file_vocab, "w", encoding="utf-8-sig") as f:
            for vocab in sorted(text_vocab_set):
                f.write(vocab + "\n")
                new_vocal += vocab + "\n"
        vocab_size = len(text_vocab_set)

    if error_files != []:
        error_text = "\n".join([" = ".join(item) for item in error_files])
    else:
        error_text = ""

    return (
        f"prepare complete \nsamples : {len(text_list)}\ntime data : {format_seconds_to_hms(lenght)}\nmin sec : {min_second}\nmax sec : {max_second}\nfile_arrow : {file_raw}\nvocab : {vocab_size}\n{error_text}",
        new_vocal,
    )


def check_user(value):
    return gr.update(visible=not value), gr.update(visible=value)


def calculate_train(
    name_project,
    batch_size_type,
    max_samples,
    learning_rate,
    num_warmup_updates,
    save_per_updates,
    last_per_steps,
    finetune,
):
    path_project = os.path.join(path_data, name_project)
    file_duraction = os.path.join(path_project, "duration.json")

    if not os.path.isfile(file_duraction):
        return (
            1000,
            max_samples,
            num_warmup_updates,
            save_per_updates,
            last_per_steps,
            "project not found !",
            learning_rate,
        )

    with open(file_duraction, "r") as file:
        data = json.load(file)

    duration_list = data["duration"]
    samples = len(duration_list)
    hours = sum(duration_list) / 3600

    # if torch.cuda.is_available():
    # gpu_properties = torch.cuda.get_device_properties(0)
    # total_memory = gpu_properties.total_memory / (1024**3)
    # elif torch.backends.mps.is_available():
    # total_memory = psutil.virtual_memory().available / (1024**3)

    if torch.cuda.is_available():
        gpu_count = torch.cuda.device_count()
        total_memory = 0
        for i in range(gpu_count):
            gpu_properties = torch.cuda.get_device_properties(i)
            total_memory += gpu_properties.total_memory / (1024**3)  # in GB

    elif torch.backends.mps.is_available():
        gpu_count = 1
        total_memory = psutil.virtual_memory().available / (1024**3)

    if batch_size_type == "frame":
        batch = int(total_memory * 0.5)
        batch = (lambda num: num + 1 if num % 2 != 0 else num)(batch)
        batch_size_per_gpu = int(38400 / batch)
    else:
        batch_size_per_gpu = int(total_memory / 8)
        batch_size_per_gpu = (lambda num: num + 1 if num % 2 != 0 else num)(batch_size_per_gpu)
        batch = batch_size_per_gpu

    if batch_size_per_gpu <= 0:
        batch_size_per_gpu = 1

    if samples < 64:
        max_samples = int(samples * 0.25)
    else:
        max_samples = 64

    num_warmup_updates = int(samples * 0.05)
    save_per_updates = int(samples * 0.10)
    last_per_steps = int(save_per_updates * 0.25)

    max_samples = (lambda num: num + 1 if num % 2 != 0 else num)(max_samples)
    num_warmup_updates = (lambda num: num + 1 if num % 2 != 0 else num)(num_warmup_updates)
    save_per_updates = (lambda num: num + 1 if num % 2 != 0 else num)(save_per_updates)
    last_per_steps = (lambda num: num + 1 if num % 2 != 0 else num)(last_per_steps)
    if last_per_steps <= 0:
        last_per_steps = 2

    total_hours = hours
    mel_hop_length = 256
    mel_sampling_rate = 24000

    # target
    wanted_max_updates = 1000000

    # train params
    gpus = gpu_count
    frames_per_gpu = batch_size_per_gpu  # 8 * 38400 = 307200
    grad_accum = 1

    # intermediate
    mini_batch_frames = frames_per_gpu * grad_accum * gpus
    mini_batch_hours = mini_batch_frames * mel_hop_length / mel_sampling_rate / 3600
    updates_per_epoch = total_hours / mini_batch_hours
    # steps_per_epoch = updates_per_epoch * grad_accum
    epochs = wanted_max_updates / updates_per_epoch

    if finetune:
        learning_rate = 1e-5
    else:
        learning_rate = 7.5e-5

    return (
        batch_size_per_gpu,
        max_samples,
        num_warmup_updates,
        save_per_updates,
        last_per_steps,
        samples,
        learning_rate,
        int(epochs),
    )


def extract_and_save_ema_model(checkpoint_path: str, new_checkpoint_path: str, safetensors: bool) -> str:
    try:
        checkpoint = torch.load(checkpoint_path)
        print("Original Checkpoint Keys:", checkpoint.keys())

        ema_model_state_dict = checkpoint.get("ema_model_state_dict", None)
        if ema_model_state_dict is None:
            return "No 'ema_model_state_dict' found in the checkpoint."

        if safetensors:
            new_checkpoint_path = new_checkpoint_path.replace(".pt", ".safetensors")
            save_file(ema_model_state_dict, new_checkpoint_path)
        else:
            new_checkpoint_path = new_checkpoint_path.replace(".safetensors", ".pt")
            new_checkpoint = {"ema_model_state_dict": ema_model_state_dict}
            torch.save(new_checkpoint, new_checkpoint_path)

        return f"New checkpoint saved at: {new_checkpoint_path}"

    except Exception as e:
        return f"An error occurred: {e}"


def expand_model_embeddings(ckpt_path, new_ckpt_path, num_new_tokens=42):
    seed = 666
    random.seed(seed)
    os.environ["PYTHONHASHSEED"] = str(seed)
    torch.manual_seed(seed)
    torch.cuda.manual_seed(seed)
    torch.cuda.manual_seed_all(seed)
    torch.backends.cudnn.deterministic = True
    torch.backends.cudnn.benchmark = False

    ckpt = torch.load(ckpt_path, map_location="cpu")

    ema_sd = ckpt.get("ema_model_state_dict", {})
    embed_key_ema = "ema_model.transformer.text_embed.text_embed.weight"
    old_embed_ema = ema_sd[embed_key_ema]

    vocab_old = old_embed_ema.size(0)
    embed_dim = old_embed_ema.size(1)
    vocab_new = vocab_old + num_new_tokens

    def expand_embeddings(old_embeddings):
        new_embeddings = torch.zeros((vocab_new, embed_dim))
        new_embeddings[:vocab_old] = old_embeddings
        new_embeddings[vocab_old:] = torch.randn((num_new_tokens, embed_dim))
        return new_embeddings

    ema_sd[embed_key_ema] = expand_embeddings(ema_sd[embed_key_ema])

    torch.save(ckpt, new_ckpt_path)

    return vocab_new


def vocab_count(text):
    return str(len(text.split(",")))


def vocab_extend(project_name, symbols, model_type):
    if symbols == "":
        return "Symbols empty!"

    name_project = project_name
    path_project = os.path.join(path_data, name_project)
    file_vocab_project = os.path.join(path_project, "vocab.txt")

    file_vocab = os.path.join(path_data, "Emilia_ZH_EN_pinyin/vocab.txt")
    if not os.path.isfile(file_vocab):
        return f"the file {file_vocab} not found !"

    symbols = symbols.split(",")
    if symbols == []:
        return "Symbols to extend not found."

    with open(file_vocab, "r", encoding="utf-8-sig") as f:
        data = f.read()
        vocab = data.split("\n")
    vocab_check = set(vocab)

    miss_symbols = []
    for item in symbols:
        item = item.replace(" ", "")
        if item in vocab_check:
            continue
        miss_symbols.append(item)

    if miss_symbols == []:
        return "Symbols are okay no need to extend."

    size_vocab = len(vocab)
    vocab.pop()
    for item in miss_symbols:
        vocab.append(item)

    vocab.append("")

    with open(file_vocab_project, "w", encoding="utf-8") as f:
        f.write("\n".join(vocab))

    if model_type == "F5-TTS":
        ckpt_path = str(cached_path("hf://SWivid/F5-TTS/F5TTS_Base/model_1200000.pt"))
    else:
        ckpt_path = str(cached_path("hf://SWivid/E2-TTS/E2TTS_Base/model_1200000.pt"))

    vocab_size_new = len(miss_symbols)

    dataset_name = name_project.replace("_pinyin", "").replace("_char", "")
    new_ckpt_path = os.path.join(path_project_ckpts, dataset_name)
    os.makedirs(new_ckpt_path, exist_ok=True)
    new_ckpt_file = os.path.join(new_ckpt_path, "model_1200000.pt")

    size = expand_model_embeddings(ckpt_path, new_ckpt_file, num_new_tokens=vocab_size_new)

    vocab_new = "\n".join(miss_symbols)
    return f"vocab old size : {size_vocab}\nvocab new size : {size}\nvocab add : {vocab_size_new}\nnew symbols :\n{vocab_new}"


def vocab_check(project_name):
    name_project = project_name
    path_project = os.path.join(path_data, name_project)

    file_metadata = os.path.join(path_project, "metadata.csv")

    file_vocab = os.path.join(path_data, "Emilia_ZH_EN_pinyin/vocab.txt")
    if not os.path.isfile(file_vocab):
        return f"the file {file_vocab} not found !", ""

    with open(file_vocab, "r", encoding="utf-8-sig") as f:
        data = f.read()
        vocab = data.split("\n")
        vocab = set(vocab)

    if not os.path.isfile(file_metadata):
        return f"the file {file_metadata} not found !", ""

    with open(file_metadata, "r", encoding="utf-8-sig") as f:
        data = f.read()

    miss_symbols = []
    miss_symbols_keep = {}
    for item in data.split("\n"):
        sp = item.split("|")
        if len(sp) != 2:
            continue

        text = sp[1].lower().strip()

        for t in text:
            if t not in vocab and t not in miss_symbols_keep:
                miss_symbols.append(t)
                miss_symbols_keep[t] = t

    if miss_symbols == []:
        vocab_miss = ""
        info = "You can train using your language !"
    else:
        vocab_miss = ",".join(miss_symbols)
        info = f"The following symbols are missing in your language {len(miss_symbols)}\n\n"

    return info, vocab_miss


def get_random_sample_prepare(project_name):
    name_project = project_name
    path_project = os.path.join(path_data, name_project)
    file_arrow = os.path.join(path_project, "raw.arrow")
    if not os.path.isfile(file_arrow):
        return "", None
    dataset = Dataset_.from_file(file_arrow)
    random_sample = dataset.shuffle(seed=random.randint(0, 1000)).select([0])
    text = "[" + " , ".join(["' " + t + " '" for t in random_sample["text"][0]]) + "]"
    audio_path = random_sample["audio_path"][0]
    return text, audio_path


def get_random_sample_transcribe(project_name):
    name_project = project_name
    path_project = os.path.join(path_data, name_project)
    file_metadata = os.path.join(path_project, "metadata.csv")
    if not os.path.isfile(file_metadata):
        return "", None

    data = ""
    with open(file_metadata, "r", encoding="utf-8-sig") as f:
        data = f.read()

    list_data = []
    for item in data.split("\n"):
        sp = item.split("|")
        if len(sp) != 2:
            continue
        list_data.append([os.path.join(path_project, "wavs", sp[0] + ".wav"), sp[1]])

    if list_data == []:
        return "", None

    random_item = random.choice(list_data)

    return random_item[1], random_item[0]


def get_random_sample_infer(project_name):
    text, audio = get_random_sample_transcribe(project_name)
    return (
        text,
        text,
        audio,
    )


def infer(project, file_checkpoint, exp_name, ref_text, ref_audio, gen_text, nfe_step, use_ema):
    global last_checkpoint, last_device, tts_api, last_ema

    if not os.path.isfile(file_checkpoint):
        return None, "checkpoint not found!"

    if training_process is not None:
        device_test = "cpu"
    else:
        device_test = None

    if last_checkpoint != file_checkpoint or last_device != device_test or last_ema != use_ema:
        if last_checkpoint != file_checkpoint:
            last_checkpoint = file_checkpoint

        if last_device != device_test:
            last_device = device_test

        if last_ema != use_ema:
            last_ema = use_ema

        vocab_file = os.path.join(path_data, project, "vocab.txt")

        tts_api = F5TTS(
            model_type=exp_name, ckpt_file=file_checkpoint, vocab_file=vocab_file, device=device_test, use_ema=use_ema
        )

        print("update >> ", device_test, file_checkpoint, use_ema)

    with tempfile.NamedTemporaryFile(delete=False, suffix=".wav") as f:
        tts_api.infer(gen_text=gen_text, ref_text=ref_text, ref_file=ref_audio, nfe_step=nfe_step, file_wave=f.name)
        return f.name, tts_api.device


def check_finetune(finetune):
    return gr.update(interactive=finetune), gr.update(interactive=finetune), gr.update(interactive=finetune)


def get_checkpoints_project(project_name, is_gradio=True):
    if project_name is None:
        return [], ""
    project_name = project_name.replace("_pinyin", "").replace("_char", "")

    if os.path.isdir(path_project_ckpts):
        files_checkpoints = glob(os.path.join(path_project_ckpts, project_name, "*.pt"))
        files_checkpoints = sorted(
            files_checkpoints,
            key=lambda x: int(os.path.basename(x).split("_")[1].split(".")[0])
            if os.path.basename(x) != "model_last.pt"
            else float("inf"),
        )
    else:
        files_checkpoints = []

    selelect_checkpoint = None if not files_checkpoints else files_checkpoints[0]

    if is_gradio:
        return gr.update(choices=files_checkpoints, value=selelect_checkpoint)

    return files_checkpoints, selelect_checkpoint


def get_gpu_stats():
    gpu_stats = ""

    if torch.cuda.is_available():
        gpu_count = torch.cuda.device_count()
        for i in range(gpu_count):
            gpu_name = torch.cuda.get_device_name(i)
            gpu_properties = torch.cuda.get_device_properties(i)
            total_memory = gpu_properties.total_memory / (1024**3)  # in GB
            allocated_memory = torch.cuda.memory_allocated(i) / (1024**2)  # in MB
            reserved_memory = torch.cuda.memory_reserved(i) / (1024**2)  # in MB

            gpu_stats += (
                f"GPU {i} Name: {gpu_name}\n"
                f"Total GPU memory (GPU {i}): {total_memory:.2f} GB\n"
                f"Allocated GPU memory (GPU {i}): {allocated_memory:.2f} MB\n"
                f"Reserved GPU memory (GPU {i}): {reserved_memory:.2f} MB\n\n"
            )

    elif torch.backends.mps.is_available():
        gpu_count = 1
        gpu_stats += "MPS GPU\n"
        total_memory = psutil.virtual_memory().total / (
            1024**3
        )  # Total system memory (MPS doesn't have its own memory)
        allocated_memory = 0
        reserved_memory = 0

        gpu_stats += (
            f"Total system memory: {total_memory:.2f} GB\n"
            f"Allocated GPU memory (MPS): {allocated_memory:.2f} MB\n"
            f"Reserved GPU memory (MPS): {reserved_memory:.2f} MB\n"
        )

    else:
        gpu_stats = "No GPU available"

    return gpu_stats


def get_cpu_stats():
    cpu_usage = psutil.cpu_percent(interval=1)
    memory_info = psutil.virtual_memory()
    memory_used = memory_info.used / (1024**2)
    memory_total = memory_info.total / (1024**2)
    memory_percent = memory_info.percent

    pid = os.getpid()
    process = psutil.Process(pid)
    nice_value = process.nice()

    cpu_stats = (
        f"CPU Usage: {cpu_usage:.2f}%\n"
        f"System Memory: {memory_used:.2f} MB used / {memory_total:.2f} MB total ({memory_percent}% used)\n"
        f"Process Priority (Nice value): {nice_value}"
    )

    return cpu_stats


def get_combined_stats():
    gpu_stats = get_gpu_stats()
    cpu_stats = get_cpu_stats()
    combined_stats = f"### GPU Stats\n{gpu_stats}\n\n### CPU Stats\n{cpu_stats}"
    return combined_stats


with gr.Blocks() as app:
    gr.Markdown(
        """
# E2/F5 TTS AUTOMATIC FINETUNE 

This is a local web UI for F5 TTS with advanced batch processing support. This app supports the following TTS models:

* [F5-TTS](https://arxiv.org/abs/2410.06885) (A Fairytaler that Fakes Fluent and Faithful Speech with Flow Matching)
* [E2 TTS](https://arxiv.org/abs/2406.18009) (Embarrassingly Easy Fully Non-Autoregressive Zero-Shot TTS)

The checkpoints support English and Chinese.

for tutorial and updates check here (https://github.com/SWivid/F5-TTS/discussions/143)
"""
    )

    with gr.Row():
        projects, projects_selelect = get_list_projects()
        tokenizer_type = gr.Radio(label="Tokenizer Type", choices=["pinyin", "char"], value="pinyin")
        project_name = gr.Textbox(label="project name", value="my_speak")
        bt_create = gr.Button("create new project")

    with gr.Row():
        cm_project = gr.Dropdown(
            choices=projects, value=projects_selelect, label="Project", allow_custom_value=True, scale=6
        )
        ch_refresh_project = gr.Button("refresh", scale=1)

    bt_create.click(fn=create_data_project, inputs=[project_name, tokenizer_type], outputs=[cm_project])

    with gr.Tabs():
        with gr.TabItem("transcribe Data"):
            ch_manual = gr.Checkbox(label="audio from path", value=False)

            mark_info_transcribe = gr.Markdown(
                """```plaintext    
     Place your 'wavs' folder and 'metadata.csv' file in the {your_project_name}' directory. 
                 
     my_speak/
     │
     └── dataset/
         ├── audio1.wav
         └── audio2.wav
         ...
     ```""",
                visible=False,
            )

            audio_speaker = gr.File(label="voice", type="filepath", file_count="multiple")
            txt_lang = gr.Text(label="Language", value="english")
            bt_transcribe = bt_create = gr.Button("transcribe")
            txt_info_transcribe = gr.Text(label="info", value="")
            bt_transcribe.click(
                fn=transcribe_all,
                inputs=[cm_project, audio_speaker, txt_lang, ch_manual],
                outputs=[txt_info_transcribe],
            )
            ch_manual.change(fn=check_user, inputs=[ch_manual], outputs=[audio_speaker, mark_info_transcribe])

            random_sample_transcribe = gr.Button("random sample")

            with gr.Row():
                random_text_transcribe = gr.Text(label="Text")
                random_audio_transcribe = gr.Audio(label="Audio", type="filepath")

            random_sample_transcribe.click(
                fn=get_random_sample_transcribe,
                inputs=[cm_project],
                outputs=[random_text_transcribe, random_audio_transcribe],
            )

        with gr.TabItem("vocab check"):
            gr.Markdown("""```plaintext 
check the vocabulary for fine-tuning Emilia_ZH_EN to ensure all symbols are included. for finetune new language
```""")

            check_button = gr.Button("check vocab")
            txt_info_check = gr.Text(label="info", value="")

            gr.Markdown("""```plaintext 
Using the extended model, you can fine-tune to a new language that is missing symbols in the vocab , this create a new model with a new vocabulary size and save it in your ckpts/project folder.
```""")

            exp_name_extend = gr.Radio(label="Model", choices=["F5-TTS", "E2-TTS"], value="F5-TTS")

            with gr.Row():
                txt_extend = gr.Textbox(
                    label="Symbols",
                    value="",
                    placeholder="To add new symbols, make sure to use ',' for each symbol",
                    scale=6,
                )
                txt_count_symbol = gr.Textbox(label="new size vocab", value="", scale=1)

            extend_button = gr.Button("Extended")
            txt_info_extend = gr.Text(label="info", value="")

            txt_extend.change(vocab_count, inputs=[txt_extend], outputs=[txt_count_symbol])
            check_button.click(fn=vocab_check, inputs=[cm_project], outputs=[txt_info_check, txt_extend])
            extend_button.click(
                fn=vocab_extend, inputs=[cm_project, txt_extend, exp_name_extend], outputs=[txt_info_extend]
            )

        with gr.TabItem("prepare Data"):
            gr.Markdown(
                """```plaintext    
     place all your wavs folder and your metadata.csv file in {your name project}                                 
     my_speak/
     │
     ├── wavs/
     │   ├── audio1.wav
     │   └── audio2.wav
     |   ...
     │
     └── metadata.csv
      
     file format metadata.csv

     audio1|text1
     audio2|text1
     ...

     ```"""
            )
            ch_tokenizern = gr.Checkbox(label="create vocabulary", value=False, visible=False)
            bt_prepare = bt_create = gr.Button("prepare")
            txt_info_prepare = gr.Text(label="info", value="")
            txt_vocab_prepare = gr.Text(label="vocab", value="")

            bt_prepare.click(
                fn=create_metadata, inputs=[cm_project, ch_tokenizern], outputs=[txt_info_prepare, txt_vocab_prepare]
            )

            random_sample_prepare = gr.Button("random sample")

            with gr.Row():
                random_text_prepare = gr.Text(label="Tokenizer")
                random_audio_prepare = gr.Audio(label="Audio", type="filepath")

            random_sample_prepare.click(
                fn=get_random_sample_prepare, inputs=[cm_project], outputs=[random_text_prepare, random_audio_prepare]
            )

        with gr.TabItem("train Data"):
            gr.Markdown("""```plaintext 
The auto-setting is still experimental. Please make sure that the epochs , save per updates , and last per steps are set correctly, or change them manually as needed.
If you encounter a memory error, try reducing the batch size per GPU to a smaller number.
```""")
            with gr.Row():
                bt_calculate = bt_create = gr.Button("Auto Settings")
                lb_samples = gr.Label(label="samples")
                batch_size_type = gr.Radio(label="Batch Size Type", choices=["frame", "sample"], value="frame")

            with gr.Row():
                ch_finetune = bt_create = gr.Checkbox(label="finetune", value=True)
                tokenizer_file = gr.Textbox(label="Tokenizer File", value="")
                file_checkpoint_train = gr.Textbox(label="Path to the preetrain checkpoint ", value="")

            with gr.Row():
                exp_name = gr.Radio(label="Model", choices=["F5TTS_Base", "E2TTS_Base"], value="F5TTS_Base")
                learning_rate = gr.Number(label="Learning Rate", value=1e-5, step=1e-5)

            with gr.Row():
                batch_size_per_gpu = gr.Number(label="Batch Size per GPU", value=1000)
                max_samples = gr.Number(label="Max Samples", value=64)

            with gr.Row():
                grad_accumulation_steps = gr.Number(label="Gradient Accumulation Steps", value=1)
                max_grad_norm = gr.Number(label="Max Gradient Norm", value=1.0)

            with gr.Row():
                epochs = gr.Number(label="Epochs", value=10)
                num_warmup_updates = gr.Number(label="Warmup Updates", value=2)

            with gr.Row():
                save_per_updates = gr.Number(label="Save per Updates", value=300)
                last_per_steps = gr.Number(label="Last per Steps", value=100)

            with gr.Row():
                mixed_precision = gr.Radio(label="mixed_precision", choices=["none", "fp16", "fpb16"], value="none")
                start_button = gr.Button("Start Training")
                stop_button = gr.Button("Stop Training", interactive=False)

            if projects_selelect is not None:
                (
                    exp_namev,
                    learning_ratev,
                    batch_size_per_gpuv,
                    batch_size_typev,
                    max_samplesv,
                    grad_accumulation_stepsv,
                    max_grad_normv,
                    epochsv,
                    num_warmupv_updatesv,
                    save_per_updatesv,
                    last_per_stepsv,
                    finetunev,
                    file_checkpoint_trainv,
                    tokenizer_typev,
                    tokenizer_filev,
                    mixed_precisionv,
                ) = load_settings(projects_selelect)
                exp_name.value = exp_namev
                learning_rate.value = learning_ratev
                batch_size_per_gpu.value = batch_size_per_gpuv
                batch_size_type.value = batch_size_typev
                max_samples.value = max_samplesv
                grad_accumulation_steps.value = grad_accumulation_stepsv
                max_grad_norm.value = max_grad_normv
                epochs.value = epochsv
                num_warmup_updates.value = num_warmupv_updatesv
                save_per_updates.value = save_per_updatesv
                last_per_steps.value = last_per_stepsv
                ch_finetune.value = finetunev
                file_checkpoint_train.value = file_checkpoint_trainv
                tokenizer_type.value = tokenizer_typev
                tokenizer_file.value = tokenizer_filev
                mixed_precision.value = mixed_precisionv

            ch_stream = gr.Checkbox(label="stream output experiment.", value=True)
            txt_info_train = gr.Text(label="info", value="")
            start_button.click(
                fn=start_training,
                inputs=[
                    cm_project,
                    exp_name,
                    learning_rate,
                    batch_size_per_gpu,
                    batch_size_type,
                    max_samples,
                    grad_accumulation_steps,
                    max_grad_norm,
                    epochs,
                    num_warmup_updates,
                    save_per_updates,
                    last_per_steps,
                    ch_finetune,
                    file_checkpoint_train,
                    tokenizer_type,
                    tokenizer_file,
                    mixed_precision,
                    ch_stream,
                ],
                outputs=[txt_info_train, start_button, stop_button],
            )
            stop_button.click(fn=stop_training, outputs=[txt_info_train, start_button, stop_button])

            bt_calculate.click(
                fn=calculate_train,
                inputs=[
                    cm_project,
                    batch_size_type,
                    max_samples,
                    learning_rate,
                    num_warmup_updates,
                    save_per_updates,
                    last_per_steps,
                    ch_finetune,
                ],
                outputs=[
                    batch_size_per_gpu,
                    max_samples,
                    num_warmup_updates,
                    save_per_updates,
                    last_per_steps,
                    lb_samples,
                    learning_rate,
                    epochs,
                ],
            )

            ch_finetune.change(
                check_finetune, inputs=[ch_finetune], outputs=[file_checkpoint_train, tokenizer_file, tokenizer_type]
            )

            def setup_load_settings():
                output_components = [
                    exp_name,
                    learning_rate,
                    batch_size_per_gpu,
                    batch_size_type,
                    max_samples,
                    grad_accumulation_steps,
                    max_grad_norm,
                    epochs,
                    num_warmup_updates,
                    save_per_updates,
                    last_per_steps,
                    ch_finetune,
                    file_checkpoint_train,
                    tokenizer_type,
                    tokenizer_file,
                    mixed_precision,
                ]

                return output_components

            outputs = setup_load_settings()

            cm_project.change(
                fn=load_settings,
                inputs=[cm_project],
                outputs=outputs,
            )

            ch_refresh_project.click(
                fn=load_settings,
                inputs=[cm_project],
                outputs=outputs,
            )

        with gr.TabItem("test model"):
            gr.Markdown("""```plaintext 
SOS : check the use_ema setting (True or False) for your model to see what works best for you. 
```""")
            exp_name = gr.Radio(label="Model", choices=["F5-TTS", "E2-TTS"], value="F5-TTS")
            list_checkpoints, checkpoint_select = get_checkpoints_project(projects_selelect, False)

            nfe_step = gr.Number(label="n_step", value=32)
            ch_use_ema = gr.Checkbox(label="use ema", value=True)
            with gr.Row():
                cm_checkpoint = gr.Dropdown(
                    choices=list_checkpoints, value=checkpoint_select, label="checkpoints", allow_custom_value=True
                )
                bt_checkpoint_refresh = gr.Button("refresh")

            random_sample_infer = gr.Button("random sample")

            ref_text = gr.Textbox(label="ref text")
            ref_audio = gr.Audio(label="audio ref", type="filepath")
            gen_text = gr.Textbox(label="gen text")

            random_sample_infer.click(
                fn=get_random_sample_infer, inputs=[cm_project], outputs=[ref_text, gen_text, ref_audio]
            )

            with gr.Row():
                txt_info_gpu = gr.Textbox("", label="device")
                check_button_infer = gr.Button("infer")

            gen_audio = gr.Audio(label="audio gen", type="filepath")

            check_button_infer.click(
                fn=infer,
                inputs=[cm_project, cm_checkpoint, exp_name, ref_text, ref_audio, gen_text, nfe_step, ch_use_ema],
                outputs=[gen_audio, txt_info_gpu],
            )

            bt_checkpoint_refresh.click(fn=get_checkpoints_project, inputs=[cm_project], outputs=[cm_checkpoint])
            cm_project.change(fn=get_checkpoints_project, inputs=[cm_project], outputs=[cm_checkpoint])

        with gr.TabItem("reduse checkpoint"):
            gr.Markdown("""```plaintext 
Reduce the model size from 5GB to 1.3GB. The new checkpoint can be used for inference or fine-tuning afterward, but it cannot be used to continue training..
```""")
            txt_path_checkpoint = gr.Text(label="path checkpoint :")
            txt_path_checkpoint_small = gr.Text(label="path output :")
            ch_safetensors = gr.Checkbox(label="safetensors", value="")
            txt_info_reduse = gr.Text(label="info", value="")
            reduse_button = gr.Button("reduse")
            reduse_button.click(
                fn=extract_and_save_ema_model,
                inputs=[txt_path_checkpoint, txt_path_checkpoint_small, ch_safetensors],
                outputs=[txt_info_reduse],
            )

        with gr.TabItem("system info"):
            output_box = gr.Textbox(label="GPU and CPU Information", lines=20)

            def update_stats():
                return get_combined_stats()

            update_button = gr.Button("Update Stats")
            update_button.click(fn=update_stats, outputs=output_box)

            def auto_update():
                yield gr.update(value=update_stats())

            gr.update(fn=auto_update, inputs=[], outputs=output_box)


@click.command()
@click.option("--port", "-p", default=None, type=int, help="Port to run the app on")
@click.option("--host", "-H", default=None, help="Host to run the app on")
@click.option(
    "--share",
    "-s",
    default=False,
    is_flag=True,
    help="Share the app via Gradio share link",
)
@click.option("--api", "-a", default=True, is_flag=True, help="Allow API access")
def main(port, host, share, api):
    global app
    print("Starting app...")
    app.queue(api_open=api).launch(server_name=host, server_port=port, share=share, show_api=api)


if __name__ == "__main__":
    main()