miH*dZddlmZddlZddlZddlZddlmZddl m Z ddl Z ddl mZddlmZdd lmZdd lmZmZej,eeefZGd d ej0ZGd dZdZ ddej,eefdej,ej8efdededededededej@edej8fdZ!y)z Code to apply a model to a mix. It will handle chunking with overlaps and inteprolation between chunks, as well as the "shift trick". )ThreadPoolExecutorN)nn) functional)Demucs)HDemucs)HTDemucs) center_trimDummyPoolExecutorceZdZ ddejedej ejejedej effd Ze defdZ dZ xZ S) BagOfModelsmodelsweightssegmentct|t|dkDsJ|d}|D]]}|j|jk(sJ|j|jk(sJ|j |j k(sJ|W||__|j |_|j|_|j|_tj||_ |/|Dcgc]}|jDcgc]}dc}}}||_ yt|t|k(sJ|D]%}t|t|jk(r%J||_ ycc}wcc}w)a Represents a bag of models with specific weights. You should call `apply_model` rather than calling directly the forward here for optimal performance. Args: models (list[nn.Module]): list of Demucs/HDemucs models. weights (list[list[float]]): list of weights. If None, assumed to be all ones, otherwise it should be a list of N list (N number of models), each containing S floats (S number of sources). segment (None or float): overrides the `segment` attribute of each model (this is performed inplace, be careful is you reuse the models passed). rN?) super__init__lensources samplerateaudio_channelsrr ModuleListrr) selfrrrfirstother_weight __class__s F/var/www/stems/demucs_env/lib/python3.12/site-packages/demucs/apply.pyrzBagOfModels.__init__sH 6{Qq  (E==EMM1 11##u'7'77 77''5+?+?? ??" 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Args: shifts (int): if > 0, will shift in time `mix` by a random amount between 0 and 0.5 sec and apply the oppositve shift to the output. This is repeated `shifts` time and all predictions are averaged. This effectively makes the model time equivariant and improves SDR by up to 0.2 points. split (bool): if True, the input will be broken down in 8 seconds extracts and predictions will be performed individually on each and concatenated. Useful for model with large memory footprint like Tasnet. progress (bool): if True, show a progress bar (requires split=True) device (torch.device, str, or None): if provided, device on which to execute the computation, otherwise `mix.device` is assumed. When `device` is different from `mix.device`, only local computations will be on `device`, while the entire tracks will be stored on `mix.device`. num_workers (int): if non zero, device is 'cpu', how many threads to use in parallel. segment (float or None): override the model segment parameter. Nrcpu)rYrZr[r\r]r?poolrgrz-transition_power < 1 leads to weird behavior.rYg?rD.FrZ)r?z.2fr:xseconds) unit_scalencolsunit valid_length).r?rTtyperr r%r rrziprrnextiter parametersto apply_model enumeraterUranger;evalintrrWr8rQrandomrandintzerosrr$formatcatarangerEsubmitappendtqdmresultr&r hasattrrgno_gradr ))r(rXrYrZr[r\r]r?r^rrakwargs estimatestotals sub_model model_weightsoriginal_model_devicerPk inst_weightbatchchannelsr> max_shift padded_mixrr=shifted shifted_out sum_weightsegment_lengthstrideoffsetsscalerfutureschunkfuture chunk_out chunk_lengthrgs) r rnrns6~6" | ?v{{e3%k2D$&D, $F%%13 EMM**(+ELL%--(H  $I}$(i.B.B.D)E$F$M$M ! 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