CircleUnpack.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/CircleUnpack.h"
 
#include <luci/IR/Nodes/CircleUnpack.h>
#include <luci/IR/Nodes/CircleUnpackOut.h>
 
#include <luci/UserSettings.h>
#include <luci/Log.h>
 
#include <loco.h>
#include <oops/UserExn.h>
 
namespace luci
{
 
bool CircleUnpackGraphBuilder::validate(const ValidateArgs &args) const
{
  LOGGER(l);
 
  auto settings = luci::UserSettings::settings();
 
  const auto &inputs = args.op.inputs;
  const auto &outputs = args.op.outputs;
  const auto *options = args.op.builtin_options.AsUnpackOptions();
 
  if (inputs.size() != 1)
    return false;
 
  // NOTE real models may have mismatch
  if (static_cast<int32_t>(outputs.size()) != options->num)
  {
    if (settings->get(luci::UserSettings::Key::DisableValidation))
    {
      const auto tensors = args.reader.tensors();
      const auto output_tensor = tensors[outputs[0]];
      auto name = tensor_name(output_tensor);
      WARN(l) << "Warning: import Unpack(" << name << ") 'num' is not same as outputs used";
    }
    else
      return false;
  }
 
  if (options->num < 0)
    return false;
 
  const auto tensors = args.reader.tensors();
  const auto tensor = tensors.at(inputs.at(0));
  assert(tensor != nullptr);
  const auto shape = wrap(tensor->shape());
  auto shape_size = static_cast<int32_t>(shape.size());
  if (shape_size > 0)
  {
    // NOTE for unknown shape, shape_size is 0
    if (options->axis < -shape_size || options->axis >= shape_size)
      return false;
  }
 
  return true;
}
 
CircleNode *CircleUnpackGraphBuilder::build_node(const BuildNodeArgs &bna) const
{
  auto node = bna.context->graph()->nodes()->create<CircleUnpack>();
 
  node->value(bna.input_nodes[0]);
 
  const auto *options = bna.op.builtin_options.AsUnpackOptions();
  node->num(options->num);
  node->axis(options->axis);
 
  return node;
}
 
CircleNode *CircleUnpackGraphBuilder::build_out(const BuildOutArgs &boa) const
{
  auto *nodeout = boa.node->graph()->nodes()->create<CircleUnpackOut>();
 
  nodeout->input(boa.node);
  nodeout->index(boa.index);
 
  return nodeout;
}
 
} // namespace luci