Add Funcodec

[indiejoseph]

This pull request includes several changes to the codec_bpe/audio_to_codes.py file to enhance the functionality and readability of the code. The main changes involve reformatting argument parsing, adding support for a new model, and updating encoding logic.

Argument Parsing Enhancements:

• Reformatting of the argument parsing section for better readability.

New Model Support:

• Added support for the Funcodec model, including new arguments and handling logic. [1] [2]

Encoding Logic Updates:

• Updated the sample rate logic to include the Funcodec model.
• Modified the encoding logic to handle the Funcodec model.

[AbrahamSanders]

Hey @indiejoseph thanks for this contribution! I'll review it soon.

[AbrahamSanders]

@indiejoseph in testing it out I get this error:

  File "/home/codec-bpe/codec_bpe/audio_to_codes.py", line 115, in <module>
    model = Speech2Token(config_file, model_pth, device=device)
  File "/home/anaconda3/envs/dev/lib/python3.9/site-packages/funcodec/bin/codec_inference.py", line 68, in __init__
    with open(config_file, "rt", encoding="utf-8") as f:
FileNotFoundError: [Errno 2] No such file or directory: 'facebook/funcodec-base-8bit/config.yaml'

I'm not familiar with how downloading works with ModelScope - ideally it should work like in transformers, where the model is automatically downloaded from the huggingface hub if it does not exist. Alternatively to implementing this directly in audio_to_codes, instructions to download the model in the readme would be sufficient.

[indiejoseph]

Oh sorry, coz the it required to download the model in the working folder, and I have not add the instruction or other information into the README.md, this is my fault. I will update the PR. And it doesnt work like how transformers does, that have to download manually.
https://huggingface.co/alibaba-damo/audio_codec-encodec-zh_en-general-16k-nq32ds640-pytorch

[AbrahamSanders]

@indiejoseph thanks - please add a short instruction to the Readme on how to download the model. I'll review once that's in.

[indiejoseph]

I've added a section into README.md, please check