import tempfile from functools import partial import gradio as gr import openai def tts( input_text: str, model: str, voice: str, api_key: str, response_format: str = "mp3", speed: float = 1.0, ) -> str: """ Convert input text to speech using OpenAI's Text-to-Speech API. :param input_text: The text to be converted to speech. :type input_text: str :param model: The model to use for synthesis (e.g., 'tts-1', 'tts-1-hd'). :type model: str :param voice: The voice profile to use (e.g., 'alloy', 'echo', 'fable', etc.). :type voice: str :param api_key: OpenAI API key. :type api_key: str :param response_format: The audio format of the output file, defaults to 'mp3'. :type response_format: str, optional :param speed: The speed of the synthesized speech (0.25 to 4.0), defaults to 1.0. :type speed: float, optional :return: File path to the generated audio file. :rtype: str :raises gr.Error: If input parameters are invalid or API call fails. """ if not api_key.strip(): raise gr.Error( "API key is required. Get an API key at: https://platform.openai.com/account/api-keys" ) if not input_text.strip(): raise gr.Error("Input text cannot be empty.") openai.api_key = api_key try: # Create the audio speech object speech_file = openai.audio.speech.create( model=model.lower(), voice=voice.lower(), input=input_text, response_format=response_format, speed=speed, ) # Save the audio content to a temporary file file_extension = f".{response_format}" with tempfile.NamedTemporaryFile( suffix=file_extension, delete=False, mode="wb" ) as temp_file: temp_file_path = temp_file.name temp_file.write(speech_file.content) except openai.OpenAIError as e: # Catch OpenAI exceptions raise gr.Error(f"An OpenAI error occurred: {e}") except Exception as e: # Catch any other exceptions raise gr.Error(f"An unexpected error occurred: {e}") return temp_file_path def main(): """ Main function to create and launch the Gradio interface. """ MODEL_OPTIONS = ["tts-1", "tts-1-hd"] VOICE_OPTIONS = ["Alloy", "Echo", "Fable", "Onyx", "Nova", "Shimmer"] RESPONSE_FORMAT_OPTIONS = ["mp3", "opus", "aac", "flac", "wav"] VOICE_PREVIEW_FILES = {voice: f"{voice}.wav" for voice in VOICE_OPTIONS} with gr.Blocks(title="OpenAI - Text to Speech") as demo: with gr.Row(): with gr.Column(scale=1): def play_voice_sample(voice: str): """ Play the preview audio sample for the selected voice. :param voice: The name of the voice to preview. :type voice: str :return: Updated Gradio Audio component with the selected voice sample. :rtype: gr.Audio """ return gr.update( value=VOICE_PREVIEW_FILES[voice], label=f"Preview Voice: {voice.capitalize()}", ) with gr.Group(): # Set the default preview audio to one of the voices default_voice = "Echo" preview_audio = gr.Audio( interactive=False, label=f"Preview Voice: {default_voice.capitalize()}", value=VOICE_PREVIEW_FILES[default_voice], visible=True, show_download_button=False, show_share_button=False, autoplay=False, ) # Create buttons for each voice for voice in VOICE_OPTIONS: voice_button = gr.Button( value=f"{voice.capitalize()}", variant="secondary", size="sm", ) voice_button.click( fn=partial(play_voice_sample, voice=voice), outputs=preview_audio, ) with gr.Column(scale=1): api_key_input = gr.Textbox( label="OpenAI API Key", info="https://platform.openai.com/account/api-keys", type="password", placeholder="Enter your OpenAI API Key", ) model_dropdown = gr.Dropdown( choices=MODEL_OPTIONS, label="Model", value="tts-1", info="Select tts-1 for speed or tts-1-hd for quality", ) voice_dropdown = gr.Dropdown( choices=VOICE_OPTIONS, label="Voice", value="Echo", ) response_format_dropdown = gr.Dropdown( choices=RESPONSE_FORMAT_OPTIONS, label="Response Format", value="mp3", ) speed_slider = gr.Slider( minimum=0.25, maximum=4.0, step=0.05, label="Voice Speed", value=1.0, ) with gr.Column(scale=2): input_textbox = gr.Textbox( label="Input Text (0000 / 4096 chars)", lines=10, placeholder="Type your text here...", ) def update_label(input_text: str): """ Update the label of the input textbox with the current character count. :param input_text: The current text in the input textbox. :type input_text: str :return: Updated Gradio component with new label. :rtype: gr.update """ char_count = len(input_text) new_label = f"Input Text ({char_count:04d} / 4096 chars)" return gr.update(label=new_label) # Update the label when the text changes, with progress hidden input_textbox.change( fn=update_label, inputs=input_textbox, outputs=input_textbox, show_progress="hidden", # Hide the progress indicator ) # Initialize the submit button as non-interactive submit_button = gr.Button( "Enter OpenAI API Key", variant="primary", interactive=False, ) # Function to update the submit button based on API Key input def update_button(api_key): """ Update the submit button's label and interactivity based on the API key input. :param api_key: The current text in the API key input. :type api_key: str :return: Updated Gradio component for the submit button. :rtype: gr.update """ if api_key.strip(): # There is an API key, enable the submit button return gr.update( value="Convert Text to Speech", interactive=True ) else: # No API key, disable the submit button return gr.update( value="Enter OpenAI API Key", interactive=False ) # Update the submit button whenever the API Key input changes api_key_input.input( fn=update_button, inputs=api_key_input, outputs=submit_button, ) with gr.Column(scale=1): output_audio = gr.Audio( label="Output Audio", show_download_button=True, show_share_button=False, ) def on_submit( input_text: str, model: str, voice: str, api_key: str, response_format: str, speed: float, ) -> str: """ Event handler for the submit button; converts text to speech using the tts function. :param input_text: The text to convert to speech. :type input_text: str :param model: The TTS model to use (e.g., 'tts-1', 'tts-1-hd'). :type model: str :param voice: The voice profile to use (e.g., 'alloy', 'echo', etc.). :type voice: str :param api_key: OpenAI API key. :type api_key: str :param response_format: The audio format of the output file. :type response_format: str :param speed: The speed of the synthesized speech. :type speed: float :return: File path to the generated audio file. :rtype: str """ audio_file = tts( input_text, model.lower(), voice.lower(), api_key, response_format, speed ) return audio_file # Trigger the conversion when the submit button is clicked submit_button.click( fn=on_submit, inputs=[ input_textbox, model_dropdown, voice_dropdown, api_key_input, response_format_dropdown, speed_slider, ], outputs=output_audio, ) # Launch the Gradio app with error display enabled demo.launch(show_error=True) if __name__ == "__main__": main()