o }oi@sbddlmZddlZddlmmZddlmZddgZGdddejZ Gdddej Z dS))UnionN)nn CausalConv2D CausalConv1DcspeZdZdZ        ddeded ed ed eeefd ed edededdffdd ZfddZ Z S)rz A causal version of nn.Conv2d where each location in the 2D matrix would have no access to locations on its right or down All arguments are the same as nn.Conv2d except padding which should be set as None rTzerosN in_channels out_channels kernel_sizestridepaddingdilationgroupsbias padding_modereturnc sP|durtd|d|_|d|_d}tt|||||||||| | | dS)Nz8Argument padding should be set to None for CausalConv2D.rr) ValueError _left_padding_right_paddingsuperr__init__ selfrr r r r r rrrdevicedtype __class__f/home/ubuntu/.local/lib/python3.10/site-packages/nemo/collections/asr/parts/submodules/causal_convs.pyrs$   zCausalConv2D.__init__cs.tj||j|j|j|jfd}t|}|S)Npad)Fr rrrforward)rxrrrr"@s zCausalConv2D.forwardrrrrTrNN) __name__ __module__ __qualname____doc__intrstrboolrr" __classcell__rrrrrs@     "cs|eZdZdZ        ddeded ed ed eeefd ed edededdffdd ZdddZ dfdd Z Z S)ra A causal version of nn.Conv1d where each step would have limited access to locations on its right or left All arguments are the same as nn.Conv1d except padding. If padding is set None, then paddings are set automatically to make it a causal convolution where each location would not see any steps on its right. If padding is set as a list (size of 2), then padding[0] would be used as left padding and padding[1] as right padding. It would make it possible to control the number of steps to be accessible on the right and left. This mode is not supported when stride > 1. padding[0]+padding[1] should be equal to (kernel_size - 1). rrTrNrr r r r r rrrrc sd|_|dur|d|_|d|_nD|dkr ||dkr tdt|tr,||_||_n*t|trNt|dkrN|d|d|dkrN|d|_|d|_ntd|d|j|_t t |j ||||d|||| | | d dS)Nrz3No striding allowed for non-symmetric convolutions!rzInvalid padding param: !) rr r r r r rrrrr) cache_drop_sizerrr isinstancer)listlen_max_cache_lenrrrrrrrrTs6   .    zCausalConv1D.__init__cCs|durtj||j|jfd}|}||fStj|d|jfd}tj||gdd}|jdkr=|ddddd|j f}n|}|dddd|d df}||fS)Nrr)dim)r!r rrtorchcatr/size)rr#cachenew_x next_cacherrr update_caches   "zCausalConv1D.update_cachecs2|j||d\}}t|}|dur|S||fS)N)r9)r<rr")rr#r9rrrr"s  zCausalConv1D.forwardr$)N) r%r&r'r(r)rr*r+rr<r"r,rrrrrHsB     .) typingrr6torch.nn.functionalr functionalr!__all__Conv2drConv1drrrrrs  0