CircleDepthwiseConv2D.cpp

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/*
 * Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#include "luci/Import/Nodes/CircleDepthwiseConv2D.h"
 
#include <luci/IR/Nodes/CircleDepthwiseConv2D.h>
 
#include <oops/UserExn.h>
 
namespace luci
{
 
bool CircleDepthwiseConv2DGraphBuilder::validate(const ValidateArgs &args) const
{
  // Circle DepthwiseConv2D may not have a bias but we won't support this
  if (args.op.inputs.size() != 3 && args.op.inputs.size() != 2)
    return false;
 
  if (args.op.outputs.size() != 1)
    return false;
 
  const auto tensors = args.reader.tensors();
 
  // input shape
  const auto input = tensors.at(args.op.inputs.at(0));
  assert(input != nullptr);
  const auto input_shape = wrap(input->shape());
 
  // input shape must be rank 4
  if (input_shape.size() != 4)
    return false;
 
  // filter shape
  const auto filter = tensors.at(args.op.inputs.at(1));
  assert(filter != nullptr);
  const auto filter_shape = wrap(filter->shape());
 
  // filter shape must be rank 4
  if (filter_shape.size() != 4)
    return false;
 
  // multiplier
  const auto *options = args.op.builtin_options.AsDepthwiseConv2DOptions();
  const auto &multiplier = options->depth_multiplier;
 
  // filter represents as [1, H, W, C*M] where M is multiplier.
  if (filter_shape.at(3) != input_shape.at(3) * multiplier)
    return false;
 
  return true;
}
 
CircleNode *CircleDepthwiseConv2DGraphBuilder::build_node(const circle::OperatorT &op,
                                                          const std::vector<CircleNode *> &inputs,
                                                          loco::Graph *graph) const
{
  auto *node = graph->nodes()->create<CircleDepthwiseConv2D>();
  node->input(inputs.at(0));
  node->filter(inputs.at(1));
  if (inputs.size() != 3)
    throw oops::UserExn("DepthwiseConv2d without bias is unsupported");
  node->bias(inputs.at(2));
 
  const auto *options = op.builtin_options.AsDepthwiseConv2DOptions();
  node->padding(luci_padding(options->padding));
  node->stride()->w(options->stride_w);
  node->stride()->h(options->stride_h);
  node->depthMultiplier(options->depth_multiplier);
  node->fusedActivationFunction(luci_actfunc(options->fused_activation_function));
  node->dilation()->w(options->dilation_w_factor);
  node->dilation()->h(options->dilation_h_factor);
 
  return node;
}
 
} // namespace luci