/****************************************************************************
*
*    Copyright (c) 2020 Vivante Corporation
*
*    Permission is hereby granted, free of charge, to any person obtaining a
*    copy of this software and associated documentation files (the "Software"),
*    to deal in the Software without restriction, including without limitation
*    the rights to use, copy, modify, merge, publish, distribute, sublicense,
*    and/or sell copies of the Software, and to permit persons to whom the
*    Software is furnished to do so, subject to the following conditions:
*
*    The above copyright notice and this permission notice shall be included in
*    all copies or substantial portions of the Software.
*
*    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
*    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
*    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
*    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
*    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
*    DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
#include "tim/vx/ops/slice.h"

#include "direct_map_op_impl.h"
#include "vsi_nn_pub.h"

namespace tim {
namespace vx {
namespace ops {

Slice::Slice(Graph* graph, uint32_t dims, const std::vector<int32_t>& start,
             const std::vector<int32_t>& length)
    : DirectMapOp(graph, VSI_NN_OP_SLICE),
      dims_(dims),
      start_(start),
      length_(length) {
  this->impl()->node()->nn_param.slice.dims = dims_;
  this->impl()->node()->nn_param.slice.start =
      reinterpret_cast<const uint32_t*>(start_.data());
  this->impl()->node()->nn_param.slice.length =
      reinterpret_cast<const uint32_t*>(length_.data());
}

Slice::Slice(Graph* graph, uint32_t dims, const std::vector<int32_t>& start,
             const std::vector<int32_t>& length,
             const std::vector<int32_t>& step)
    : DirectMapOp(graph, VSI_NN_OP_STRIDED_SLICE),
      dims_(dims),
      start_(std::move(start)),
      length_(std::move(length)),
      step_(std::move(step)) {
  for (uint32_t i = 0; i < length_.size(); ++i) {
    end_dims_.push_back(start_.at(i) + length_.at(i));
  }
  this->impl()->node()->nn_param.strided_slice.begin_mask = 0;
  this->impl()->node()->nn_param.strided_slice.end_mask = 0;
  this->impl()->node()->nn_param.strided_slice.shrink_axis_mask = 0;
  this->impl()->node()->nn_param.strided_slice.begin_dims = start_.data();
  this->impl()->node()->nn_param.strided_slice.begin_dims_num = start_.size();
  this->impl()->node()->nn_param.strided_slice.end_dims = end_dims_.data();
  this->impl()->node()->nn_param.strided_slice.end_dims_num = end_dims_.size();
  this->impl()->node()->nn_param.strided_slice.stride_dims = step_.data();
  this->impl()->node()->nn_param.strided_slice.stride_dims_num = step_.size();
}

std::shared_ptr<Operation> Slice::Clone(std::shared_ptr<Graph>& graph) const {
  if (this->impl()->kind_ == VSI_NN_OP_STRIDED_SLICE) {
    return graph->CreateOperation<Slice>(this->dims_, this->start_,
                                         this->length_, this->step_);
  } else {
    return graph->CreateOperation<Slice>(this->dims_, this->start_,
                                         this->length_);
  }
}

}  // namespace ops
}  // namespace vx
}  // namespace tim