import os import traceback import librosa import numpy as np import av from io import BytesIO def wav2(i, o, format): inp = av.open(i, "rb") if format == "m4a": format = "mp4" out = av.open(o, "wb", format=format) if format == "ogg": format = "libvorbis" if format == "mp4": format = "aac" ostream = out.add_stream(format) for frame in inp.decode(audio=0): for p in ostream.encode(frame): out.mux(p) for p in ostream.encode(None): out.mux(p) out.close() inp.close() def audio2(i, o, format, sr): inp = av.open(i, "rb") out = av.open(o, "wb", format=format) if format == "ogg": format = "libvorbis" if format == "f32le": format = "pcm_f32le" ostream = out.add_stream(format, channels=1) ostream.sample_rate = sr for frame in inp.decode(audio=0): for p in ostream.encode(frame): out.mux(p) out.close() inp.close() def load_audio(file, sr): file = ( file.strip(" ").strip('"').strip("\n").strip('"').strip(" ") ) # 防止小白拷路径头尾带了空格和"和回车 if os.path.exists(file) == False: raise RuntimeError( "You input a wrong audio path that does not exists, please fix it!" ) try: with open(file, "rb") as f: with BytesIO() as out: audio2(f, out, "f32le", sr) return np.frombuffer(out.getvalue(), np.float32).flatten() except AttributeError: audio = file[1] / 32768.0 if len(audio.shape) == 2: audio = np.mean(audio, -1) return librosa.resample(audio, orig_sr=file[0], target_sr=16000) except: raise RuntimeError(traceback.format_exc())