text: /*******************************************************************************
  * Copyright 2018 Intel Corporation
  *
  * 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.
  *******************************************************************************/
  
  #ifndef SHUFFLE_PD_HPP
  #define SHUFFLE_PD_HPP
  
  #include "dnnl.h"
  
  #include "c_types_map.hpp"
  #include "primitive_desc.hpp"
  
  namespace dnnl {
  namespace impl {
  
  struct shuffle_pd_t : public primitive_desc_t {
      static constexpr auto base_pkind = primitive_kind::shuffle;
  
      typedef shuffle_pd_t base_class;
      typedef shuffle_pd_t hint_class;
  
      shuffle_pd_t(engine_t *engine, const shuffle_desc_t *adesc,
              const primitive_attr_t *attr, const shuffle_pd_t *hint_fwd_pd)
          : primitive_desc_t(engine, attr, base_pkind)
          , desc_(*adesc)
          , hint_fwd_pd_(hint_fwd_pd)
          , data_md_(desc_.data_desc) {}
  
      const shuffle_desc_t *desc() const { return &desc_; }
      virtual const op_desc_t *op_desc() const override {
          return reinterpret_cast<const op_desc_t *>(this->desc());
      }
      virtual void init_info() override { impl::init_info(this, this->info_); }
  
      virtual status_t query(query_t what, int idx, void *result) const override {
          switch (what) {
              case query::shuffle_d:
                  *(const shuffle_desc_t **)result = desc();
                  break;
              default: return primitive_desc_t::query(what, idx, result);
          }
          return status::success;
      }
  
      virtual arg_usage_t arg_usage(int arg) const override {
          if (is_fwd()) {
              if (arg == DNNL_ARG_SRC) return arg_usage_t::input;
  
              if (arg == DNNL_ARG_DST) return arg_usage_t::output;
          } else {
              if (arg == DNNL_ARG_DIFF_DST) return arg_usage_t::input;
  
              if (arg == DNNL_ARG_DIFF_SRC) return arg_usage_t::output;
          }
  
          return primitive_desc_t::arg_usage(arg);
      }
  
      virtual const memory_desc_t *src_md(int index = 0) const override {
          return index == 0 && is_fwd() ? &data_md_ : &glob_zero_md;
      }
      virtual const memory_desc_t *dst_md(int index = 0) const override {
          return index == 0 && is_fwd() ? &data_md_ : &glob_zero_md;
      }
  
      virtual const memory_desc_t *diff_src_md(int index = 0) const override {
          return index == 0 && !is_fwd() ? &data_md_ : &glob_zero_md;
      }
      virtual const memory_desc_t *diff_dst_md(int index = 0) const override {
          return index == 0 && !is_fwd() ? &data_md_ : &glob_zero_md;
      }
  
      virtual int n_inputs() const override { return 1; }
      virtual int n_outputs() const override { return 1; }
  
      /* shuffle aux functions */
  
      dim_t MB() const { return data_md()->dims[0]; }
      dim_t C() const { return ndims() >= 2 ? data_md()->dims[1] : 1; }
      dim_t D() const { return ndims() >= 5 ? data_md()->dims[ndims() - 3] : 1; }
      dim_t H() const { return ndims() >= 4 ? data_md()->dims[ndims() - 2] : 1; }
      dim_t W() const { return ndims() >= 3 ? data_md()->dims[ndims() - 1] : 1; }
  
      int ndims() const { return data_md()->ndims; }
  
      int axis() const { return desc_.axis; }
      dim_t group_size() const { return desc_.group_size; }
      dim_t axis_size() const { return data_md()->dims[axis()]; }
  
      bool is_fwd() const {
          return utils::one_of(desc_.prop_kind, prop_kind::forward_training,
                  prop_kind::forward_inference);
      }
  
      const memory_desc_t *data_md() const { return &data_md_; }
  
  protected:
      shuffle_desc_t desc_;
      const shuffle_pd_t *hint_fwd_pd_;
      memory_desc_t data_md_;
  };
  
  } // namespace impl
  } // namespace dnnl
  
  #endif
  
  // vim: et ts=4 sw=4 cindent cino+=l0,\:4,N-s
  