o Me¦ã@s¾ddlZddlmZddlmZmZmZGdd„dƒZdedefdd „Z ddeeefd e d e de de deej e ff dd„Z  ddedej de de deedee f dd„ZdS)éN)ÚPath)ÚOptionalÚTupleÚUnionc @s.eZdZdZdededededef dd„Zd S) Ú AudioInfoz2 Audio info, return type of backend info function Ú sample_rateÚ num_samplesÚ num_channelsÚbits_per_sampleÚencodingcCs"||_||_||_||_||_dS)N)rrr r r )Úselfrrr r r ©r úMD:\Projects\ConvertPro\env\Lib\site-packages\paddle/audio/backends/backend.pyÚ__init__s  zAudioInfo.__init__N)Ú__name__Ú __module__Ú __qualname__Ú__doc__ÚintÚstrrr r r rrsÿÿrÚfilepathÚreturncCótdƒ‚)aÜGet signal information of input audio file. Args: filepath: audio path or file object. Returns: AudioInfo: info of the given audio. Example: .. code-block:: python import os import paddle sample_rate = 16000 wav_duration = 0.5 num_channels = 1 num_frames = sample_rate * wav_duration wav_data = paddle.linspace(-1.0, 1.0, num_frames) * 0.1 waveform = wav_data.tile([num_channels, 1]) base_dir = os.getcwd() filepath = os.path.join(base_dir, "test.wav") paddle.audio.save(filepath, waveform, sample_rate) wav_info = paddle.audio.info(filepath) úplease set audio backend©ÚNotImplementedError)rr r rÚinfo!sréÿÿÿÿTÚ frame_offsetÚ num_framesÚ normalizeÚchannels_firstcCr)arLoad audio data from file.Load the audio content start form frame_offset, and get num_frames. Args: frame_offset: from 0 to total frames, num_frames: from -1 (means total frames) or number frames which want to read, normalize: if True: return audio which norm to (-1, 1), dtype=float32 if False: return audio with raw data, dtype=int16 channels_first: if True: return audio with shape (channels, time) Return: Tuple[paddle.Tensor, int]: (audio_content, sample rate) Exampels: .. code-block:: python import os import paddle sample_rate = 16000 wav_duration = 0.5 num_channels = 1 num_frames = sample_rate * wav_duration wav_data = paddle.linspace(-1.0, 1.0, num_frames) * 0.1 waveform = wav_data.tile([num_channels, 1]) base_dir = os.getcwd() filepath = os.path.join(base_dir, "test.wav") paddle.audio.save(filepath, waveform, sample_rate) wav_data_read, sr = paddle.audio.load(filepath) rr)rrrr r!r r rÚload@s'r"éÚsrcrr r cCr)a¿ Save audio tensor to file. Args: filepath: saved path src: the audio tensor sample_rate: the number of samples of audio per second. channels_first: src channel infomation if True, means input tensor is (channels, time) if False, means input tensor is (time, channels) encoding:encoding format, wave_backend only support PCM16 now. bits_per_sample: bits per sample, wave_backend only support 16 bits now. Returns: None Examples: .. code-block:: python import paddle sample_rate = 16000 wav_duration = 0.5 num_channels = 1 num_frames = sample_rate * wav_duration wav_data = paddle.linspace(-1.0, 1.0, num_frames) * 0.1 waveform = wav_data.tile([num_channels, 1]) filepath = "./test.wav" paddle.audio.save(filepath, waveform, sample_rate) rr)rr$rr!r r r r rÚsavejs(r%)rrTT)TNr#)ZpaddleÚpathlibrÚtypingrrrrrrrÚboolZTensorr"r%r r r rÚsH   üÿþýü  ü.úÿþýüûú