/**
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* @license
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* Copyright 2020 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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import {backend_util, Conv3DBackpropFilterV2, Conv3DBackpropFilterV2Attrs, Conv3DBackpropFilterV2Inputs, KernelConfig, tensor1d} from '@tensorflow/tfjs';
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import {createTensorsTypeOpAttr, NodeJSKernelBackend} from '../nodejs_kernel_backend';
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export const conv3DBackpropFilterV2Config: KernelConfig = {
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kernelName: Conv3DBackpropFilterV2,
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backendName: 'tensorflow',
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kernelFunc: (args) => {
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const {x, dy} = args.inputs as Conv3DBackpropFilterV2Inputs;
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const backend = args.backend as NodeJSKernelBackend;
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const {strides, pad, filterShape} =
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args.attrs as unknown as Conv3DBackpropFilterV2Attrs;
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const dilations = 1;
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const convInfo = backend_util.computeConv3DInfo(
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x.shape as [number, number, number, number, number], filterShape,
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strides, dilations, pad);
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const $strides = [
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1, convInfo.strideDepth, convInfo.strideHeight, convInfo.strideWidth, 1
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];
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const padding = convInfo.padInfo.type;
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const dataFormat =
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convInfo.dataFormat === 'channelsLast' ? 'NDHWC' : 'NCDHW';
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if (!backend.isGPUPackage && convInfo.dilationDepth > 1) {
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throw new Error('CPU Dilation depth must be 1');
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}
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const $dilations = [
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1, convInfo.dilationDepth, convInfo.dilationHeight,
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convInfo.dilationWidth, 1
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];
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const opAttrs = [
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createTensorsTypeOpAttr('T', x.dtype),
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{name: 'strides', type: backend.binding.TF_ATTR_INT, value: $strides},
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{name: 'padding', type: backend.binding.TF_ATTR_STRING, value: padding}, {
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name: 'data_format',
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type: backend.binding.TF_ATTR_STRING,
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value: dataFormat
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},
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{name: 'dilations', type: backend.binding.TF_ATTR_INT, value: $dilations}
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];
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const filterSizes = tensor1d(filterShape, 'int32');
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const res = backend.executeSingleOutput(
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Conv3DBackpropFilterV2, opAttrs, [x, filterSizes, dy]);
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filterSizes.dispose();
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return res;
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}
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};
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