/* Copyright 2019 Google LLC. 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.
 * ===========================================================================*/

#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#endif

#include <cstddef>

#include "tfjs-backend-wasm/src/cc/argminmax_impl.h"
#include "tfjs-backend-wasm/src/cc/backend.h"
#include "tfjs-backend-wasm/src/cc/util.h"

namespace tfjs::wasm {

// We use C-style API to interface with Javascript.
extern "C" {

#ifdef __EMSCRIPTEN__
EMSCRIPTEN_KEEPALIVE
#endif
void ArgMax(const int x_id, const DType dtype, const int outer_size,
            const int inner_size, const int out_id) {
  auto& x_info = backend::get_tensor_info(x_id);
  auto& out_info = backend::get_tensor_info_out(out_id);
  int32_t* out_buf = out_info.i32_write();

  switch (dtype) {
    case DType::float32:
      ArgMaxImpl<float>(x_info.f32(), outer_size, inner_size, out_buf);
      break;
    case DType::int32:
      ArgMaxImpl<int32_t>(x_info.i32(), outer_size, inner_size, out_buf);
      break;
    case DType::boolean:
      ArgMaxImpl<bool>(x_info.b(), outer_size, inner_size, out_buf);
      break;
    default:
      util::warn("ArgMax failed. Unknown dtype %d", dtype);
  }
}

}  // extern "C"
}  // namespace tfjs::wasm
