openvoice_app.py

import os
import torch
import argparse
import gradio as gr
from zipfile import ZipFile
import langid
from openvoice import se_extractor
from openvoice.api import BaseSpeakerTTS, ToneColorConverter

parser = argparse.ArgumentParser()
parser.add_argument("--share", action='store_true', default=False, help="make link public")
args = parser.parse_args()

en_ckpt_base = 'base_speakers/EN'
zh_ckpt_base = 'base_speakers/ZH'
ckpt_converter = 'converter'
device = 'cuda' if torch.cuda.is_available() else 'cpu'
output_dir = 'outputs'
os.makedirs(output_dir, exist_ok=True)

# load models
en_base_speaker_tts = BaseSpeakerTTS(f'{en_ckpt_base}/config.json', device=device)
en_base_speaker_tts.load_ckpt(f'{en_ckpt_base}/checkpoint.pth')
zh_base_speaker_tts = BaseSpeakerTTS(f'{zh_ckpt_base}/config.json', device=device)
zh_base_speaker_tts.load_ckpt(f'{zh_ckpt_base}/checkpoint.pth')
tone_color_converter = ToneColorConverter(f'{ckpt_converter}/config.json', device=device)
tone_color_converter.load_ckpt(f'{ckpt_converter}/checkpoint.pth')

# load speaker embeddings
en_source_default_se = torch.load(f'{en_ckpt_base}/en_default_se.pth').to(device)
en_source_style_se = torch.load(f'{en_ckpt_base}/en_style_se.pth').to(device)
zh_source_se = torch.load(f'{zh_ckpt_base}/zh_default_se.pth').to(device)

# This online demo mainly supports English and Chinese
supported_languages = ['zh', 'en']

def predict(prompt, style, audio_file_pth, agree):
    # initialize a empty info
    text_hint = ''
    # agree with the terms
    if agree == False:
        text_hint += '[ERROR] Please accept the Terms & Condition!\n'
        gr.Warning("Please accept the Terms & Condition!")
        return (
            text_hint,
            None,
            None,
        )

    # first detect the input language
    language_predicted = langid.classify(prompt)[0].strip()  
    print(f"Detected language:{language_predicted}")

    if language_predicted not in supported_languages:
        text_hint += f"[ERROR] The detected language {language_predicted} for your input text is not in our Supported Languages: {supported_languages}\n"
        gr.Warning(
            f"The detected language {language_predicted} for your input text is not in our Supported Languages: {supported_languages}"
        )

        return (
            text_hint,
            None,
            None,
        )
    
    if language_predicted == "zh":
        tts_model = zh_base_speaker_tts
        source_se = zh_source_se
        language = 'Chinese'
        if style not in ['default']:
            text_hint += f"[ERROR] The style {style} is not supported for Chinese, which should be in ['default']\n"
            gr.Warning(f"The style {style} is not supported for Chinese, which should be in ['default']")
            return (
                text_hint,
                None,
                None,
            )

    else:
        tts_model = en_base_speaker_tts
        if style == 'default':
            source_se = en_source_default_se
        else:
            source_se = en_source_style_se
        language = 'English'
        if style not in ['default', 'whispering', 'shouting', 'excited', 'cheerful', 'terrified', 'angry', 'sad', 'friendly']:
            text_hint += f"[ERROR] The style {style} is not supported for English, which should be in ['default', 'whispering', 'shouting', 'excited', 'cheerful', 'terrified', 'angry', 'sad', 'friendly']\n"
            gr.Warning(f"The style {style} is not supported for English, which should be in ['default', 'whispering', 'shouting', 'excited', 'cheerful', 'terrified', 'angry', 'sad', 'friendly']")
            return (
                text_hint,
                None,
                None,
            )

    speaker_wav = audio_file_pth

    if len(prompt) < 2:
        text_hint += f"[ERROR] Please give a longer prompt text \n"
        gr.Warning("Please give a longer prompt text")
        return (
            text_hint,
            None,
            None,
        )
    if len(prompt) > 200:
        text_hint += f"[ERROR] Text length limited to 200 characters for this demo, please try shorter text. You can clone our open-source repo and try for your usage \n"
        gr.Warning(
            "Text length limited to 200 characters for this demo, please try shorter text. You can clone our open-source repo for your usage"
        )
        return (
            text_hint,
            None,
            None,
        )
    
    # note diffusion_conditioning not used on hifigan (default mode), it will be empty but need to pass it to model.inference
    try:
        target_se, audio_name = se_extractor.get_se(speaker_wav, tone_color_converter, target_dir='processed', vad=True)
    except Exception as e:
        text_hint += f"[ERROR] Get target tone color error {str(e)} \n"
        gr.Warning(
            "[ERROR] Get target tone color error {str(e)} \n"
        )
        return (
            text_hint,
            None,
            None,
        )

    src_path = f'{output_dir}/tmp.wav'
    tts_model.tts(prompt, src_path, speaker=style, language=language)

    save_path = f'{output_dir}/output.wav'
    # Run the tone color converter
    encode_message = "@MyShell"
    tone_color_converter.convert(
        audio_src_path=src_path, 
        src_se=source_se, 
        tgt_se=target_se, 
        output_path=save_path,
        message=encode_message)

    text_hint += f'''Get response successfully \n'''

    return (
        text_hint,
        save_path,
        speaker_wav,
    )



title = "MyShell OpenVoice"



examples = [
    [
        "今天天气真好，我们一起出去吃饭吧。",
        'default',
        "resources/demo_speaker1.mp3",
        True,
    ],[
        "This audio is generated by open voice with a half-performance model.",
        'whispering',
        "resources/demo_speaker2.mp3",
        True,
    ],
    [
        "He hoped there would be stew for dinner, turnips and carrots and bruised potatoes and fat mutton pieces to be ladled out in thick, peppered, flour-fattened sauce.",
        'sad',
        "resources/demo_speaker0.mp3",
        True,
    ],
]

with gr.Blocks(analytics_enabled=False) as demo:
    with gr.Row():
        with gr.Column():
            input_text_gr = gr.Textbox(
                label="Text Prompt",
                info="One or two sentences at a time is better. Up to 200 text characters.",
                value="He hoped there would be stew for dinner, turnips and carrots and bruised potatoes and fat mutton pieces to be ladled out in thick, peppered, flour-fattened sauce.",
            )
            style_gr = gr.Dropdown(
                label="Style",
                choices=['default', 'whispering', 'cheerful', 'terrified', 'angry', 'sad', 'friendly'],
                max_choices=1,
                value="default",
            )
            ref_gr = gr.Audio(
                label="Reference Audio",
                type="filepath",
                value="resources/demo_speaker2.mp3",
            )
            tos_gr = gr.Checkbox(
                label="Agree",
                value=False,
                info="I agree to the terms of the cc-by-nc-4.0 license-: https://github.com/myshell-ai/OpenVoice/blob/main/LICENSE",
            )

            tts_button = gr.Button("Send", elem_id="send-btn", visible=True)


        with gr.Column():
            out_text_gr = gr.Text(label="Info")
            audio_gr = gr.Audio(label="Synthesised Audio", autoplay=True)
            ref_audio_gr = gr.Audio(label="Reference Audio Used")

            gr.Examples(examples,
                        label="Examples",
                        inputs=[input_text_gr, style_gr, ref_gr, tos_gr],
                        outputs=[out_text_gr, audio_gr, ref_audio_gr],
                        fn=predict,
                        cache_examples=False,)
            tts_button.click(predict, [input_text_gr, style_gr, ref_gr, tos_gr], outputs=[out_text_gr, audio_gr, ref_audio_gr])

demo.queue()  
demo.launch(debug=True, show_api=True, share=True)