app.py

import argparse
import json
import os
import re

import gradio as gr
import librosa
import numpy as np
import torch
from torch import no_grad, LongTensor

import commons
import utils
from mel_processing import spectrogram_torch
from models import SynthesizerTrn
from text import text_to_sequence, _clean_text

limitation = os.getenv("SYSTEM") == "spaces"  # limit text and audio length in huggingface spaces


def get_text(text, hps, is_symbol):
    text_norm = text_to_sequence(text, hps.symbols, [] if is_symbol else hps.data.text_cleaners)
    if hps.data.add_blank:
        text_norm = commons.intersperse(text_norm, 0)
    text_norm = LongTensor(text_norm)
    return text_norm


def create_tts_fn(model, hps, speaker_ids):
    def tts_fn(text, speaker, speed, is_symbol):
        if limitation:
            text_len = len(re.sub("\[([A-Z]{2})\]", "", text))
            max_len = 150
            if is_symbol:
                max_len *= 3
            if text_len > max_len:
                return "Error: Text is too long", None

        speaker_id = speaker_ids[speaker]
        stn_tst = get_text(text, hps, is_symbol)
        with no_grad():
            x_tst = stn_tst.unsqueeze(0).to(device)
            x_tst_lengths = LongTensor([stn_tst.size(0)]).to(device)
            sid = LongTensor([speaker_id]).to(device)
            audio = model.infer(x_tst, x_tst_lengths, sid=sid, noise_scale=.667, noise_scale_w=0.8,
                                length_scale=1.0 / speed)[0][0, 0].data.cpu().float().numpy()
        del stn_tst, x_tst, x_tst_lengths, sid
        return "Success", (hps.data.sampling_rate, audio)

    return tts_fn


def create_vc_fn(model, hps, speaker_ids):
    def vc_fn(original_speaker, target_speaker, input_audio):
        if input_audio is None:
            return "You need to upload an audio", None
        sampling_rate, audio = input_audio
        original_speaker_id = speaker_ids[original_speaker]
        target_speaker_id = speaker_ids[target_speaker]

        audio = (audio / np.iinfo(audio.dtype).max).astype(np.float32)
        if len(audio.shape) > 1:
            audio = librosa.to_mono(audio.transpose(1, 0))
        if sampling_rate != hps.data.sampling_rate:
            audio = librosa.resample(audio, orig_sr=sampling_rate, target_sr=hps.data.sampling_rate)
        with no_grad():
            y = torch.FloatTensor(audio)
            y = y.unsqueeze(0)
            spec = spectrogram_torch(y, hps.data.filter_length,
                                     hps.data.sampling_rate, hps.data.hop_length, hps.data.win_length,
                                     center=False).to(device)
            spec_lengths = LongTensor([spec.size(-1)]).to(device)
            sid_src = LongTensor([original_speaker_id]).to(device)
            sid_tgt = LongTensor([target_speaker_id]).to(device)
            audio = model.voice_conversion(spec, spec_lengths, sid_src=sid_src, sid_tgt=sid_tgt)[0][
                0, 0].data.cpu().float().numpy()
        del y, spec, spec_lengths, sid_src, sid_tgt
        return "Success", (hps.data.sampling_rate, audio)

    return vc_fn


def create_soft_vc_fn(model, hps, speaker_ids):
    def soft_vc_fn(target_speaker, input_audio):
        if input_audio is None:
            return "You need to upload an audio", None
        sampling_rate, audio = input_audio
        target_speaker_id = speaker_ids[target_speaker]

        audio = (audio / np.iinfo(audio.dtype).max).astype(np.float32)
        if len(audio.shape) > 1:
            audio = librosa.to_mono(audio.transpose(1, 0))
        if sampling_rate != 16000:
            audio = librosa.resample(audio, orig_sr=sampling_rate, target_sr=16000)
        with torch.inference_mode():
            units = hubert.units(torch.FloatTensor(audio).unsqueeze(0).unsqueeze(0).to(device))
        with no_grad():
            unit_lengths = LongTensor([units.size(1)]).to(device)
            sid = LongTensor([target_speaker_id]).to(device)
            audio = model.infer(units, unit_lengths, sid=sid, noise_scale=.667,
                                noise_scale_w=0.8)[0][0, 0].data.cpu().float().numpy()
        del units, unit_lengths, sid
        return "Success", (hps.data.sampling_rate, audio)

    return soft_vc_fn


def create_to_symbol_fn(hps):
    def to_symbol_fn(is_symbol_input, input_text, temp_text):
        return (_clean_text(input_text, hps.data.text_cleaners), input_text) if is_symbol_input \
            else (temp_text, temp_text)

    return to_symbol_fn

if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('--device', type=str, default='cpu')
    parser.add_argument("--share", action="store_true", default=False, help="share gradio app")
    args = parser.parse_args()

    device = torch.device(args.device)
    models_tts = []
    models_vc = []
    models_soft_vc = []
    with open("saved_model/info.json", "r", encoding="utf-8") as f:
        models_info = json.load(f)
    for i, info in models_info.items():
        name = info["title"]
        author = info["author"]
        lang = info["lang"]
        example = info["example"]
        config_path = f"saved_model/{i}/config.json"
        model_path = f"saved_model/{i}/model.pth"
        cover = info["cover"]
        cover_path = f"saved_model/{i}/{cover}" if cover else None
        hps = utils.get_hparams_from_file(config_path)
        model = SynthesizerTrn(
            len(hps.symbols),
            hps.data.filter_length // 2 + 1,
            hps.train.segment_size // hps.data.hop_length,
            n_speakers=hps.data.n_speakers,
            **hps.model)
        utils.load_checkpoint(model_path, model, None)
        model.eval().to(device)
        if isinstance(hps.speakers, utils.HParams):
            speakers, speaker_ids = zip(*hps.speakers.items())
        else:
            speaker_ids = [sid for sid, name in enumerate(hps.speakers) if name != "None"]
            speakers = [name for sid, name in enumerate(hps.speakers) if name != "None"]

        t = info["type"]
        if t == "vits":
            models_tts.append((name, author, cover_path, speakers, lang, example,
                               hps.symbols, create_tts_fn(model, hps, speaker_ids),
                               create_to_symbol_fn(hps)))
            models_vc.append((name, author, cover_path, speakers, create_vc_fn(model, hps, speaker_ids)))
        elif t == "soft-vits-vc":
            models_soft_vc.append((name, author, cover_path, speakers, create_soft_vc_fn(model, hps, speaker_ids)))

    hubert = torch.hub.load("bshall/hubert:main", "hubert_soft", trust_repo=True).to(device)

    app = gr.Blocks()

    with app:
        gr.Markdown("# Moe TTS And Voice Conversion Using VITS Model\n\n"
                    "![visitor badge](https://api.visitorbadge.io/api/visitors?path=skytnt.moe-tts&countColor=%23263759&style=flat&labelStyle=lower)\n\n"
                    "[Open In Colab]"
                    "(https://colab.research.google.com/drive/14Pb8lpmwZL-JI5Ub6jpG4sz2-8KS0kbS?usp=sharing)"
                    " without queue and length limitation.\n\n"
                    "Feel free to [open discussion](https://huggingface.co/spaces/skytnt/moe-tts/discussions/new) "
                    "if you want to add your model to this app.")
        with gr.Tabs():
            with gr.TabItem("TTS"):
                with gr.Tabs():
                    for i, (name, author, cover_path, speakers, lang, example, symbols, tts_fn,
                            to_symbol_fn) in enumerate(models_tts):
                        with gr.TabItem(f"model{i}"):
                            with gr.Column():
                                cover_markdown = f"![cover](gradio_api/file={cover_path})\n\n" if cover_path else ""
                                gr.Markdown(f"## {name}\n\n"
                                            f"{cover_markdown}"
                                            f"model author: {author}\n\n"
                                            f"language: {lang}")
                                tts_input1 = gr.TextArea(label="Text (150 chars limitation)", value=example,
                                                         elem_id=f"tts-input{i}")
                                tts_input2 = gr.Dropdown(label="Speaker", choices=speakers,
                                                         type="index", value=speakers[0])
                                tts_input3 = gr.Slider(label="Speed", value=1, minimum=0.5, maximum=2, step=0.1)
                                with gr.Accordion(label="Advanced Options", open=False):
                                    temp_text_var = gr.State()
                                    symbol_input = gr.Checkbox(value=False, label="Symbol input")
                                    symbol_list = gr.Dataset(label="Symbol list", components=[tts_input1],
                                                             samples=[[x] for x in symbols],
                                                             elem_id=f"symbol-list{i}")
                                    symbol_list_state = gr.State(value=symbols)
                                tts_submit = gr.Button("Generate", variant="primary")
                                tts_output1 = gr.Textbox(label="Output Message")
                                tts_output2 = gr.Audio(label="Output Audio", elem_id=f"tts-audio{i}")
                                tts_submit.click(tts_fn, [tts_input1, tts_input2, tts_input3, symbol_input],
                                                 [tts_output1, tts_output2], concurrency_limit=3)
                                symbol_input.change(to_symbol_fn,
                                                    [symbol_input, tts_input1, temp_text_var],
                                                    [tts_input1, temp_text_var])
                                symbol_list.click(None, [symbol_list, symbol_list_state], [],
                                                  js=f"""
                                (i,symbols) => {{
                                    let root = document.querySelector("body > gradio-app");
                                    if (root.shadowRoot != null)
                                        root = root.shadowRoot;
                                    let text_input = root.querySelector("#tts-input{i}").querySelector("textarea");
                                    let startPos = text_input.selectionStart;
                                    let endPos = text_input.selectionEnd;
                                    let oldTxt = text_input.value;
                                    console.log(i, symbols, symbols[i])
                                    let result = oldTxt.substring(0, startPos) + symbols[i] + oldTxt.substring(endPos);
                                    text_input.value = result;
                                    let x = window.scrollX, y = window.scrollY;
                                    text_input.focus();
                                    text_input.selectionStart = startPos + symbols[i].length;
                                    text_input.selectionEnd = startPos + symbols[i].length;
                                    text_input.blur();
                                    window.scrollTo(x, y);
                                    return [];
                                }}""")

            with gr.TabItem("Voice Conversion"):
                with gr.Tabs():
                    for i, (name, author, cover_path, speakers, vc_fn) in enumerate(models_vc):
                        with gr.TabItem(f"model{i}"):
                            cover_markdown = f"![cover](gradio_api/file={cover_path})\n\n" if cover_path else ""
                            gr.Markdown(f"## {name}\n\n"
                                        f"{cover_markdown}"
                                        f"model author: {author}")
                            vc_input1 = gr.Dropdown(label="Original Speaker", choices=speakers, type="index",
                                                    value=speakers[0])
                            vc_input2 = gr.Dropdown(label="Target Speaker", choices=speakers, type="index",
                                                    value=speakers[min(len(speakers) - 1, 1)])
                            vc_input3 = gr.Audio(label="Input Audio",
                                                 max_length=30 if limitation else None)
                            vc_submit = gr.Button("Convert", variant="primary")
                            vc_output1 = gr.Textbox(label="Output Message")
                            vc_output2 = gr.Audio(label="Output Audio", elem_id=f"vc-audio{i}")
                            vc_submit.click(vc_fn, [vc_input1, vc_input2, vc_input3], [vc_output1, vc_output2],
                                            concurrency_limit=3)
            with gr.TabItem("Soft Voice Conversion"):
                with gr.Tabs():
                    for i, (name, author, cover_path, speakers, soft_vc_fn) in enumerate(models_soft_vc):
                        with gr.TabItem(f"model{i}"):
                            cover_markdown = f"![cover](gradio_api/file={cover_path})\n\n" if cover_path else ""
                            gr.Markdown(f"## {name}\n\n"
                                        f"{cover_markdown}"
                                        f"model author: {author}")
                            vc_input1 = gr.Dropdown(label="Target Speaker", choices=speakers, type="index",
                                                    value=speakers[0])
                            vc_input2 = gr.Audio(label="Input Audio",
                                                 max_length=30 if limitation else None)
                            vc_submit = gr.Button("Convert", variant="primary")
                            vc_output1 = gr.Textbox(label="Output Message")
                            vc_output2 = gr.Audio(label="Output Audio", elem_id=f"svc-audio{i}")
                            vc_submit.click(soft_vc_fn, [vc_input1, vc_input2],
                                            [vc_output1, vc_output2], concurrency_limit=3)
        gr.Markdown(
            "unofficial demo for \n\n"
            "- [https://github.com/CjangCjengh/MoeGoe](https://github.com/CjangCjengh/MoeGoe)\n"
            "- [https://github.com/Francis-Komizu/VITS](https://github.com/Francis-Komizu/VITS)\n"
            "- [https://github.com/luoyily/MoeTTS](https://github.com/luoyily/MoeTTS)\n"
            "- [https://github.com/Francis-Komizu/Sovits](https://github.com/Francis-Komizu/Sovits)"
        )
    app.launch(show_api=False, share=args.share, allowed_paths=["./saved_model"])