// Copyright 2018 Xiaomi, Inc.  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 "mace/kernels/pooling.h"
#include "mace/core/operator.h"
#include "mace/core/testing/test_benchmark.h"
#include "mace/kernels/conv_pool_2d_util.h"
#include "mace/ops/ops_test_util.h"

namespace mace {
namespace ops {
namespace test {

namespace {
template<DeviceType D>
void Pooling(int iters,
             int batch,
             int channels,
             int height,
             int width,
             int kernel,
             int stride,
             Padding padding,
             PoolingType pooling_type) {
  mace::testing::StopTiming();

  OpsTestNet net;

  // Add input data
  if (D == DeviceType::CPU) {
    net.AddRandomInput<D, float>("Input",
                                 {batch, channels, height, width});
  } else if (D == DeviceType::GPU) {
    net.AddRandomInput<D, float>("Input",
                                 {batch, height, width, channels});
  } else {
    MACE_NOT_IMPLEMENTED;
  }

  if (D == DeviceType::CPU) {
    OpDefBuilder("Pooling", "PoolingTest")
      .Input("Input")
      .Output("Output")
      .AddIntArg("pooling_type", pooling_type)
      .AddIntsArg("kernels", {kernel, kernel})
      .AddIntsArg("strides", {stride, stride})
      .AddIntArg("padding", padding)
      .AddIntsArg("dilations", {1, 1})
      .Finalize(net.NewOperatorDef());
  } else if (D == DeviceType::GPU) {
    BufferToImage<D, float>(&net, "Input", "InputImage",
                            kernels::BufferType::IN_OUT_CHANNEL);

    OpDefBuilder("Pooling", "PoolingTest")
      .Input("InputImage")
      .Output("OutputImage")
      .AddIntArg("pooling_type", pooling_type)
      .AddIntsArg("kernels", {kernel, kernel})
      .AddIntsArg("strides", {stride, stride})
      .AddIntArg("padding", padding)
      .AddIntsArg("dilations", {1, 1})
      .Finalize(net.NewOperatorDef());
  } else {
    MACE_NOT_IMPLEMENTED;
  }

  // Warm-up
  for (int i = 0; i < 5; ++i) {
    net.RunOp(D);
  }

  mace::testing::StartTiming();
  while (iters--) {
    net.RunOp(D);
  }
}
}  // namespace

#define MACE_BM_POOLING_MACRO(N, C, H, W, KE, STRIDE, PA, PO, DEVICE)          \
  static void                                                                  \
      MACE_BM_POOLING_##N##_##C##_##H##_##W##_K##KE##S##STRIDE##_##PA##_##PO##_\
        ##DEVICE(                                                              \
          int iters) {                                                         \
    const int64_t tot = static_cast<int64_t>(iters) * N * C * H * W;           \
    mace::testing::MaccProcessed(tot);                                         \
    mace::testing::BytesProcessed(tot *(sizeof(float)));                       \
    Pooling<DEVICE>(iters, N, C, H, W, KE, STRIDE, Padding::PA,                \
                    PoolingType::PO);                                          \
  }                                                                            \
  MACE_BENCHMARK(                                                              \
      MACE_BM_POOLING_##N##_##C##_##H##_##W##_K##KE##S##STRIDE##_##PA##_##PO##_\
        ##DEVICE)

#define MACE_BM_POOLING(N, C, H, W, K, S, PA, PO)       \
  MACE_BM_POOLING_MACRO(N, C, H, W, K, S, PA, PO, CPU); \
  MACE_BM_POOLING_MACRO(N, C, H, W, K, S, PA, PO, GPU);

MACE_BM_POOLING(1, 3, 129, 129, 2, 2, SAME, MAX);
MACE_BM_POOLING(1, 3, 257, 257, 2, 2, SAME, MAX);
MACE_BM_POOLING(1, 3, 513, 513, 2, 2, SAME, MAX);
MACE_BM_POOLING(1, 3, 1025, 1025, 2, 2, SAME, MAX);

}  // namespace test
}  // namespace ops
}  // namespace mace
