[英]Why doesn't tempfile.SpooledTemporaryFile implement readable, writable, seekable?
[英]How to get wave module methods for reading a .wav audio but with a temporary file tempfile.SpooledTemporaryFile obtained from fastAPI post request?
我有一個 function,它接收 a.wav 音頻路徑目錄並以字節為單位返回其 pcm_data,sample_rate 為 int,duration 為 float。
def read_wave(self, path: str) -> Dict:
with contextlib.closing(wave.open(path, "rb")) as wf:
num_channels: int = wf.getnchannels()
assert num_channels == 1
sample_width: int = wf.getsampwidth()
assert sample_width == 2
sample_rate: int = wf.getframerate()
assert sample_rate in (8000, 16000, 32000)
frames: int = wf.getnframes()
pcm_data: bytes = wf.readframes(frames)
duration: float = frames / sample_rate
return {
"pcm_data": pcm_data,
"sample_rate": sample_rate,
"duration": duration,
}
現在我希望音頻文件來自使用 FastAPI 的 POST 請求上傳的音頻,所以如果我使用來自 fastapi 的 UploadFile class 上傳 a.wav 音頻,我會得到一個 tempfile.SpooledTemporaryFile,我如何調整第一個 function 以適應這種情況.
@app.post(path="/upload-audios/")
async def upload_audios(audios: list[UploadFile] = File(...)):
pass
wave.open
function支持object這樣的文件,所以可以直接使用UploadFile
的.file
屬性(代表SpooledTemporaryFile實例)。
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