o 8wi!@sbddlmZddlmZmZddlZddlZddlmZddlZeeee fZ GdddZ dS))Path)TextUnionN)Tensorc seZdZdZededefddZededefddZ ed e e e fde fd d Zdedefd d Zddedeffdd ZdededefddZ ddedededefddZZS)AudiouIAudio IO with on-the-fly resampling Parameters ---------- sample_rate: int Target sample rate. mono : int, optional Convert multi-channel to mono. Defaults to True. Usage ----- >>> audio = Audio(sample_rate=16000) >>> samples = audio("/path/to/audio.wav") # on-the-fly resampling >>> original_sample_rate = 44100 >>> two_seconds_stereo = torch.rand(2, 2 * original_sample_rate) >>> samples = audio({"samples": two_seconds_stereo, "sample_rate": original_sample_rate}) >>> assert samples.shape[1] == 2 * 16000 filereturncCs|t|tr)squaremeansqrt)r rmsrrr rms_normalizeHs zAudio.rms_normalize file_pathcCsJtt|}t|tur|\}}|j}|j}||fS|j}|j}||fS)z"Return (num_samples, sample_rate).) torchaudioinfostrtypetuplelengthrate num_framesr )r r"siei num_samplesr rrrget_audio_metadataYs zAudio.get_audio_metadatacCsj||t|tr$d|vr|djd}|d}n||d\}}n||\}}t||j|S)zTNumber of samples (in target sample rate) :param file: audio file r r r r )rrrrr,mathceilr )selfrr+r rrrget_num_sampleshs   zAudio.get_num_samplesTr monocst||_||_dS)N)super__init__r r1)r/r r1 __class__rrr3s  zAudio.__init__cCsB|jr|jddkr|jddd}|j|krtj|||j}|S)a2Downmix and resample Parameters ---------- samples : (channel, time) Tensor Samples. sample_rate : int Original sample rate. Returns ------- samples : (channel, time) Tensor Remixed and resampled samples rr Tr)r1rrr r! functionalresample)r/r r rrrdownmix_and_resamples zAudio.downmix_and_resamplerN sample_offsetr+cCs||d}t|tr8d|vr$|d}|d}|jd}|dd}n!t|d}||\}}|dd}n t|}||\}}d}t|||j} |durW|| } n t|||j} | | |krit |durz t j || | d\} } Wnt yt dw|dd| | | f} |dur| |d|ddf} || |} |dur| jd |kr| ddd|f} | S| jd |kr|| jd }tjj| d |f} | S) a Parameters ---------- file : AudioFile Audio file. sample_offset : int, optional Start loading at this `sample_offset` sample. Defaults ot 0. num_samples : int, optional Load that many samples. Defaults to load up to the end of the file. Returns ------- samples : (time, channel) torch.Tensor Samples Nr r r channelr ) frame_offsetr(z~It looks like you are using an unsupported version of torchaudio. If you have 0.6 or older, please upgrade to a newer version.rr)rrrrrr#r,roundr rr!load TypeError Exceptionr8torchnnr6pad)r/rr9r+original_samplesoriginal_sample_rateoriginal_total_num_samplesr: audio_pathoriginal_sample_offsetoriginal_num_samples original_data_resultdiffrrr__call__sn          zAudio.__call__)T)rN)__name__ __module__ __qualname____doc__ staticmethod AudioFileboolrrrrr#rr%r,intr0r3r8rM __classcell__rrr4rrs*r) pathlibrtypingrrr@r!rr-rrSrrrrrs