/*******************************************************************************
* Copyright 2016-2018 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 INNER_PRODUCT_FWD_PD_HPP
#define INNER_PRODUCT_FWD_PD_HPP

#include "mkldnn.h"

#include "c_types_map.hpp"
#include "primitive_desc.hpp"
#include "memory_pd.hpp"

namespace mkldnn {
namespace impl {

struct inner_product_fwd_pd_t: public primitive_desc_t {
    typedef inner_product_fwd_pd_t base_class;
    typedef inner_product_fwd_pd_t hint_class;
    static constexpr auto base_pkind = primitive_kind::inner_product;

    inner_product_fwd_pd_t(mkldnn::impl::engine_t *engine,
            const inner_product_desc_t *adesc,
            const primitive_attr_t *attr,
            const inner_product_fwd_pd_t *hint_fwd_pd)
        : primitive_desc_t(engine, attr, primitive_kind::inner_product)
        , desc_(*adesc), hint_fwd_pd_(hint_fwd_pd) {}
    virtual ~inner_product_fwd_pd_t() {}

    const inner_product_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 { init_info_iprod(this, this->info_); }

    virtual const memory_pd_t *input_pd(int index = 0) const override {
        switch (index) {
        case 0: return src_pd();
        case 1: case 2: return weights_pd(index - 1);
        default: return nullptr;
        }
    }
    virtual const memory_pd_t *output_pd(int index = 0) const override
    { return index == 0 ? dst_pd() : nullptr; }

    virtual int n_inputs() const override { return 2 + with_bias(); }
    virtual int n_outputs() const override { return 1; }

    virtual status_t query(query_t what, int idx, void *result) const override
    {
        switch (what) {
        case query::inner_product_d:
            *(const inner_product_desc_t**)result = desc(); break;
        default: return primitive_desc_t::query(what, idx, result);
        }
        return status::success;
    }

    /* common inner_product aux functions */

    inline int MB() const { return input_pd()->desc()->dims[0]; }
    inline int IC() const { return input_pd()->desc()->dims[1]; }
    inline int IC_total() const
    { return utils::array_product(&input_pd()->desc()->dims[1], ndims() - 1); }
    inline int OC() const { return output_pd()->desc()->dims[1]; }

    inline int ID() const
    { return ndims() == 5 ? input_pd()->desc()->dims[2] : 1; }
    inline int IH() const {
        assert(ndims() == 4 || ndims() == 5);
        return input_pd()->desc()->dims[ndims()-2];
    }
    inline int IW() const {
        assert(ndims() == 4 || ndims() == 5);
        return input_pd()->desc()->dims[ndims()-1];
    }
    inline int KD() const
    { return ndims() == 5 ? desc_.weights_desc.dims[2] : 1; }
    inline int KH() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.weights_desc.dims[ndims()-2];
    }
    inline int KW() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.weights_desc.dims[ndims()-1];
    }

    inline int ndims() const { return input_pd()->desc()->ndims; }
    inline bool with_bias() const
    { return !memory_desc_wrapper(desc_.bias_desc).is_zero(); }

    bool has_zero_dim_memory() const {
        return false
            || memory_desc_wrapper(desc_.src_desc).has_zero_dim()
            || memory_desc_wrapper(desc_.dst_desc).has_zero_dim();
    }

protected:
    inner_product_desc_t desc_;
    const inner_product_fwd_pd_t *hint_fwd_pd_;

    virtual status_t init() = 0;
};

struct inner_product_bwd_data_pd_t: public primitive_desc_t {
    typedef inner_product_bwd_data_pd_t base_class;
    typedef inner_product_fwd_pd_t hint_class;
    static constexpr auto base_pkind = primitive_kind::inner_product;

    inner_product_bwd_data_pd_t(mkldnn::impl::engine_t *engine,
            const inner_product_desc_t *adesc,
            const primitive_attr_t *attr,
            const inner_product_fwd_pd_t *hint_fwd_pd)
        : primitive_desc_t(engine, attr, primitive_kind::inner_product)
        , desc_(*adesc), hint_fwd_pd_(hint_fwd_pd) {}
    virtual ~inner_product_bwd_data_pd_t() {}

    const inner_product_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 { init_info_iprod(this, this->info_); }

    virtual const memory_pd_t *input_pd(int index = 0) const override {
        switch (index) {
        case 0: return diff_dst_pd();
        case 1: return weights_pd(0);
        default: return nullptr;
        }
    }
    virtual const memory_pd_t *output_pd(int index = 0) const override
    { return index == 0 ? diff_src_pd() : nullptr; }

    virtual int n_inputs() const override { return 2; }
    virtual int n_outputs() const override { return 1; }

    virtual status_t query(query_t what, int idx, void *result) const override
    {
        switch (what) {
        case query::inner_product_d:
            *(const inner_product_desc_t**)result = desc(); break;
        default: return primitive_desc_t::query(what, idx, result);
        }
        return status::success;
    }

    /* common inner_product aux functions */

    inline int MB() const { return desc_.diff_src_desc.dims[0]; }
    inline int IC() const { return desc_.diff_src_desc.dims[1]; }
    inline int IC_total() const
    { return utils::array_product(&desc_.diff_src_desc.dims[1], ndims() - 1); }
    inline int OC() const { return desc_.diff_dst_desc.dims[1]; }

    inline int ID() const
    { return ndims() == 5 ? desc_.diff_src_desc.dims[2] : 1; }
    inline int IH() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.diff_src_desc.dims[ndims()-2];
    }
    inline int IW() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.diff_src_desc.dims[ndims()-1];
    }
    inline int KD() const
    { return ndims() == 5 ? desc_.weights_desc.dims[2] : 1; }
    inline int KH() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.weights_desc.dims[ndims()-2];
    }
    inline int KW() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.weights_desc.dims[ndims()-1];
    }

    inline int ndims() const { return desc_.diff_src_desc.ndims; }
    inline bool with_bias() const
    { return !memory_desc_wrapper(desc_.bias_desc).is_zero(); }

    bool has_zero_dim_memory() const {
        return false
            || memory_desc_wrapper(desc_.diff_src_desc).has_zero_dim()
            || memory_desc_wrapper(desc_.diff_dst_desc).has_zero_dim();
    }

protected:
    inner_product_desc_t desc_;
    const inner_product_fwd_pd_t *hint_fwd_pd_;

    virtual status_t init() = 0;
};

struct inner_product_bwd_weights_pd_t: public primitive_desc_t {
    typedef inner_product_bwd_weights_pd_t base_class;
    typedef inner_product_fwd_pd_t hint_class;
    static constexpr auto base_pkind = primitive_kind::inner_product;

    inner_product_bwd_weights_pd_t(mkldnn::impl::engine_t *engine,
            const inner_product_desc_t *adesc,
            const primitive_attr_t *attr,
            const inner_product_fwd_pd_t *hint_fwd_pd)
        : primitive_desc_t(engine, attr, primitive_kind::inner_product)
        , desc_(*adesc), hint_fwd_pd_(hint_fwd_pd) {}
    virtual ~inner_product_bwd_weights_pd_t() {}

    const inner_product_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 { init_info_iprod(this, this->info_); }

    virtual const memory_pd_t *input_pd(int index = 0) const override {
        switch (index) {
        case 0: return src_pd();
        case 1: return diff_dst_pd();
        default: return nullptr;
        }
    }
    virtual const memory_pd_t *output_pd(int index = 0) const override {
        switch (index) {
        case 0: return diff_weights_pd(0);
        case 1: return with_bias() ? diff_weights_pd(1) : nullptr;
        default: return nullptr;
        }
    }

    virtual int n_inputs() const override { return 2; }
    virtual int n_outputs() const override { return 1 + with_bias(); }

    virtual status_t query(query_t what, int idx, void *result) const override
    {
        switch (what) {
        case query::inner_product_d:
            *(const inner_product_desc_t**)result = desc(); break;
        default: return primitive_desc_t::query(what, idx, result);
        }
        return status::success;
    }

    /* common inner_product aux functions */

    inline int MB() const { return desc_.src_desc.dims[0]; }
    inline int IC() const { return desc_.src_desc.dims[1]; }
    inline int IC_total() const
    { return utils::array_product(&desc_.src_desc.dims[1], ndims() - 1); }
    inline int OC() const { return desc_.diff_dst_desc.dims[1]; }

    inline int ID() const
    { return ndims() == 5 ? desc_.src_desc.dims[2] : 1; }
    inline int IH() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.src_desc.dims[ndims()-2];
    }
    inline int IW() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.src_desc.dims[ndims()-1];
    }
    inline int KD() const
    { return ndims() == 5 ? desc_.src_desc.dims[2] : 1; }
    inline int KH() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.src_desc.dims[ndims()-2];
    }
    inline int KW() const {
        assert(ndims() == 4 || ndims() == 5);
        return desc_.src_desc.dims[ndims()-1];
    }

    inline int ndims() const { return desc_.src_desc.ndims; }
    inline bool with_bias() const
    { return !memory_desc_wrapper(desc_.diff_bias_desc).is_zero(); }

    bool has_zero_dim_memory() const {
        return false
            || memory_desc_wrapper(desc_.src_desc).has_zero_dim()
            || memory_desc_wrapper(desc_.diff_dst_desc).has_zero_dim();
    }

protected:
    inner_product_desc_t desc_;
    const inner_product_fwd_pd_t *hint_fwd_pd_;

    virtual status_t init() = 0;
};

}
}

#endif

// vim: et ts=4 sw=4 cindent cino^=l0,\:0,N-s
