from funasr import AutoModel

chunk_size = 200 # ms
model = AutoModel(
    model="fsmn-vad", 
    model_revision="v2.0.4",
    disable_update=True
)

import soundfile

wav_file = "tests/vad_example.wav"
speech, sample_rate = soundfile.read(wav_file)
chunk_stride = int(chunk_size * sample_rate / 1000)

cache = {}
total_chunk_num = int(len((speech)-1)/chunk_stride+1)
for i in range(total_chunk_num):
    speech_chunk = speech[i*chunk_stride:(i+1)*chunk_stride]
    is_final = i == total_chunk_num - 1
    res = model.generate(
        input=speech_chunk, 
        cache=cache, 
        is_final=is_final, 
        chunk_size=chunk_size,
        disable_pbar=True
    )
    if len(res[0]["value"]):
        print(res)

print(f"len(speech): {len(speech)}")
print(f"len(speech_chunk): {len(speech_chunk)}")
print(f"total_chunk_num: {total_chunk_num}")
print(f"generateconfig: chunk_size: {chunk_size}, chunk_stride: {chunk_stride}")