/*
// Copyright (c) 2016 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.
*/

#include "lstm_gemv_gpu_subgroup1x64_bfyx_ff_SIMD16.h"
#include "kernel_selector_utils.h"

namespace kernel_selector {

    ParamsKey LSTMGemvKernel_subgroup1x64_bfyx_ff_SIMD16::GetSupportedKey() const
    {
        ParamsKey k;
        k.EnableInputDataType(Datatype::F32);
        k.EnableOutputDataType(Datatype::F32);
        k.EnableDifferentTypes();
        k.EnableInputLayout(DataLayout::bfyx); 
        k.EnableOutputLayout(DataLayout::bfyx);
        k.EnableTensorOffset();
        k.EnableTensorPitches();
        k.EnableBatching();
        k.EnableLSTMGEMMBias();
        k.EnableLSTMGEMMHidden();
        k.EnableSubGroup();
        return k;
    }

    KernelsData LSTMGemvKernel_subgroup1x64_bfyx_ff_SIMD16::GetKernelsData(const Params& params, const optional_params& options) const
    {
        KernelsData kernelsData = GetCommonKernelsData(params, options);
        auto &kernel = kernelsData[0].kernels[0];

        // This kernel is good if 
        // 1) Batch size is 1
        // 2) The input size y-x size is 64x1
        const lstm_gemm_params& orgParams = static_cast<const lstm_gemm_params&>(params);
        const auto& input = orgParams.inputs[0];

        if (   (input.Batch().v == 1) 
            && (input.X().v >= 64) 
            && (input.Y().v == 1)) 
        {    
            auto out = orgParams.output;

            kernel.workGroups.global = { 16, out.X().v, out.Batch().v };
            kernelsData[0].estimatedTime = FORCE_PRIORITY_1;
        }

        return kernelsData;
    }
}