// Copyright (c) 2019 PaddlePaddle Authors. 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 "paddle/fluid/lite/api/cxx_api.h"
#include <chrono>
#include "paddle/fluid/lite/core/mir/passes.h"
#include "paddle/fluid/lite/core/op_registry.h"
namespace paddle {
namespace lite {

using Time = decltype(std::chrono::high_resolution_clock::now());
Time time() { return std::chrono::high_resolution_clock::now(); }
double time_diff(Time t1, Time t2) {
  typedef std::chrono::microseconds ms;
  auto diff = t2 - t1;
  ms counter = std::chrono::duration_cast<ms>(diff);
  return counter.count() / 1000.0;
}

void Run(const char* model_dir, int repeat) {
#ifdef LITE_WITH_ARM
  DeviceInfo::Init();
#endif
  lite::ExecutorLite predictor;
  std::vector<Place> valid_places({Place{TARGET(kHost), PRECISION(kFloat)},
                                   Place{TARGET(kARM), PRECISION(kFloat)}});

  predictor.Build(model_dir, Place{TARGET(kARM), PRECISION(kFloat)},
                  valid_places);

  auto* input_tensor = predictor.GetInput(0);
  input_tensor->Resize(DDim(std::vector<DDim::value_type>({1, 3, 224, 224})));
  auto* data = input_tensor->mutable_data<float>();
  for (int i = 0; i < input_tensor->dims().production(); i++) {
    data[i] = 1;
  }

  for (int i = 0; i < 10; i++) predictor.Run();

  auto time1 = time();
  for (int i = 0; i < repeat; i++) predictor.Run();
  auto time2 = time();
  std::cout << " predict cost: " << time_diff(time1, time2) / repeat << "ms"
            << std::endl;

  auto* out = predictor.GetOutput(0);
  LOG(INFO) << out << " memory size " << out->data_size();
  LOG(INFO) << "out " << out->data<float>()[0];
  LOG(INFO) << "out " << out->data<float>()[1];
  LOG(INFO) << "dims " << out->dims();
  LOG(INFO) << "out data size: " << out->data_size();
}

}  // namespace lite
}  // namespace paddle

int main(int argc, char** argv) {
  CHECK_EQ(argc, 2) << "usage: ./cmd <model_dir>";
  paddle::lite::Run(argv[1], 1);

  return 0;
}

USE_LITE_OP(mul);
USE_LITE_OP(fc);
USE_LITE_OP(scale);
USE_LITE_OP(feed);
USE_LITE_OP(fetch);
USE_LITE_OP(io_copy);

USE_LITE_OP(conv2d);
USE_LITE_OP(batch_norm);
USE_LITE_OP(relu);
USE_LITE_OP(depthwise_conv2d);
USE_LITE_OP(pool2d);
USE_LITE_OP(elementwise_add);
USE_LITE_OP(softmax);

USE_LITE_KERNEL(feed, kHost, kAny, kAny, def);
USE_LITE_KERNEL(fetch, kHost, kAny, kAny, def);

#ifdef LITE_WITH_ARM
USE_LITE_KERNEL(fc, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(mul, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(scale, kARM, kFloat, kNCHW, def);

USE_LITE_KERNEL(conv2d, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(batch_norm, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(relu, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(depthwise_conv2d, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(pool2d, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(elementwise_add, kARM, kFloat, kNCHW, def);
USE_LITE_KERNEL(softmax, kARM, kFloat, kNCHW, def);

// USE_LITE_KERNEL(feed, kARM, kAny, kAny, def);
// USE_LITE_KERNEL(fetch, kARM, kAny, kAny, def);
#endif  // LITE_WITH_ARM

#ifdef LITE_WITH_CUDA
USE_LITE_KERNEL(mul, kCUDA, kFloat, kNCHW, def);
USE_LITE_KERNEL(io_copy, kCUDA, kAny, kAny, host_to_device);
USE_LITE_KERNEL(io_copy, kCUDA, kAny, kAny, device_to_host);
#endif