app.py

import datetime
from pathlib import Path
import gradio as gr
import random
from style_bert_vits2.constants import (
    DEFAULT_LENGTH,
    DEFAULT_LINE_SPLIT,
    DEFAULT_NOISE,
    DEFAULT_NOISEW,
    DEFAULT_SPLIT_INTERVAL,
)
from style_bert_vits2.logging import logger
from style_bert_vits2.models.infer import InvalidToneError
from style_bert_vits2.nlp.japanese import pyopenjtalk_worker as pyopenjtalk
from style_bert_vits2.tts_model import TTSModelHolder


pyopenjtalk.initialize_worker()

example_file = "chupa_examples.txt"

initial_text = (
    "ちゅぱ、ちゅるる、ぢゅ、んく、れーれゅれろれろれろ、じゅぽぽぽぽぽ……ちゅううう！"
)

with open(example_file, "r", encoding="utf-8") as f:
    examples = f.read().splitlines()


def get_random_text() -> str:
    return random.choice(examples)


initial_md = """
# チュパ音合成デモ

2024-07-07: initial ver
"""


def make_interactive():
    return gr.update(interactive=True, value="音声合成")


def make_non_interactive():
    return gr.update(interactive=False, value="音声合成（モデルをロードしてください）")


def gr_util(item):
    if item == "プリセットから選ぶ":
        return (gr.update(visible=True), gr.Audio(visible=False, value=None))
    else:
        return (gr.update(visible=False), gr.update(visible=True))


def create_inference_app(model_holder: TTSModelHolder) -> gr.Blocks:
    def tts_fn(
        model_name,
        model_path,
        text,
        language,
        sdp_ratio,
        noise_scale,
        noise_scale_w,
        length_scale,
        line_split,
        split_interval,
        speaker,
    ):
        model_holder.get_model(model_name, model_path)
        assert model_holder.current_model is not None

        speaker_id = model_holder.current_model.spk2id[speaker]

        start_time = datetime.datetime.now()

        try:
            sr, audio = model_holder.current_model.infer(
                text=text,
                language=language,
                sdp_ratio=sdp_ratio,
                noise=noise_scale,
                noise_w=noise_scale_w,
                length=length_scale,
                line_split=line_split,
                split_interval=split_interval,
                speaker_id=speaker_id,
            )
        except InvalidToneError as e:
            logger.error(f"Tone error: {e}")
            return f"Error: アクセント指定が不正です:\n{e}", None
        except ValueError as e:
            logger.error(f"Value error: {e}")
            return f"Error: {e}", None

        end_time = datetime.datetime.now()
        duration = (end_time - start_time).total_seconds()

        message = f"Success, time: {duration} seconds."
        return message, (sr, audio)

    def get_model_files(model_name: str):
        return [str(f) for f in model_holder.model_files_dict[model_name]]

    model_names = model_holder.model_names
    if len(model_names) == 0:
        logger.error(
            f"モデルが見つかりませんでした。{model_holder.root_dir}にモデルを置いてください。"
        )
        with gr.Blocks() as app:
            gr.Markdown(
                f"Error: モデルが見つかりませんでした。{model_holder.root_dir}にモデルを置いてください。"
            )
        return app

    initial_pth_files = get_model_files(model_names[0])
    model = model_holder.get_model(model_names[0], initial_pth_files[0])
    speakers = list(model.spk2id.keys())

    with gr.Blocks(theme="ParityError/Anime") as app:
        gr.Markdown(initial_md)
        with gr.Row():
            with gr.Column():
                with gr.Row():
                    with gr.Column(scale=3):
                        model_name = gr.Dropdown(
                            label="モデル一覧",
                            choices=model_names,
                            value=model_names[0],
                        )
                        model_path = gr.Dropdown(
                            label="モデルファイル",
                            choices=initial_pth_files,
                            value=initial_pth_files[0],
                        )
                    refresh_button = gr.Button("更新", scale=1, visible=False)
                    load_button = gr.Button("ロード", scale=1, variant="primary")
                with gr.Row():
                    text_input = gr.TextArea(
                        label="テキスト", value=initial_text, scale=3
                    )
                    random_button = gr.Button("例から選ぶ 🎲", scale=1)
                    random_button.click(get_random_text, outputs=[text_input])
                with gr.Row():
                    length_scale = gr.Slider(
                        minimum=0.1,
                        maximum=2,
                        value=DEFAULT_LENGTH,
                        step=0.1,
                        label="生成音声の長さ（Length）",
                    )
                    sdp_ratio = gr.Slider(
                        minimum=0,
                        maximum=1,
                        value=1,
                        step=0.1,
                        label="SDP Ratio",
                    )
                line_split = gr.Checkbox(
                    label="改行で分けて生成（分けたほうが感情が乗ります）",
                    value=DEFAULT_LINE_SPLIT,
                    visible=False,
                )
                split_interval = gr.Slider(
                    minimum=0.0,
                    maximum=2,
                    value=DEFAULT_SPLIT_INTERVAL,
                    step=0.1,
                    label="改行ごとに挟む無音の長さ（秒）",
                )
                line_split.change(
                    lambda x: (gr.Slider(visible=x)),
                    inputs=[line_split],
                    outputs=[split_interval],
                )
                language = gr.Dropdown(
                    choices=["JP"], value="JP", label="Language", visible=False
                )
                speaker = gr.Dropdown(label="話者", choices=speakers, value=speakers[0])
                with gr.Accordion(label="詳細設定", open=True):
                    noise_scale = gr.Slider(
                        minimum=0.1,
                        maximum=2,
                        value=DEFAULT_NOISE,
                        step=0.1,
                        label="Noise",
                    )
                    noise_scale_w = gr.Slider(
                        minimum=0.1,
                        maximum=2,
                        value=DEFAULT_NOISEW,
                        step=0.1,
                        label="Noise_W",
                    )
            with gr.Column():
                tts_button = gr.Button("音声合成", variant="primary")
                text_output = gr.Textbox(label="情報")
                audio_output = gr.Audio(label="結果")

        tts_button.click(
            tts_fn,
            inputs=[
                model_name,
                model_path,
                text_input,
                language,
                sdp_ratio,
                noise_scale,
                noise_scale_w,
                length_scale,
                line_split,
                split_interval,
                speaker,
            ],
            outputs=[text_output, audio_output],
        )

        model_name.change(
            model_holder.update_model_files_for_gradio,
            inputs=[model_name],
            outputs=[model_path],
        )

        model_path.change(make_non_interactive, outputs=[tts_button])

        refresh_button.click(
            model_holder.update_model_names_for_gradio,
            outputs=[model_name, model_path, tts_button],
        )
        style = gr.Dropdown(label="スタイル", choices=[], visible=False)

        load_button.click(
            model_holder.get_model_for_gradio,
            inputs=[model_name, model_path],
            outputs=[style, tts_button, speaker],
        )

    return app


if __name__ == "__main__":
    import torch

    from style_bert_vits2.constants import Languages
    from style_bert_vits2.nlp import bert_models

    bert_models.load_model(Languages.JP)
    bert_models.load_tokenizer(Languages.JP)

    device = "cuda" if torch.cuda.is_available() else "cpu"
    model_holder = TTSModelHolder(Path("model_assets"), device)
    app = create_inference_app(model_holder)
    app.launch(inbrowser=True)