/******************************************************************************

 *                                                                            *

 * Copyright (C) 2023 The Android Open Source Project

 *

 * 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.

 *

 *****************************************************************************

 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore

 */

#include "ixheaac_type_def.h"

#include "ixheaac_constants.h"

#include "ixheaace_aac_constants.h"

#include "ixheaace_psy_utils_spreading.h"

VOID ia_enhaacplus_enc_spreading_max(const WORD32 sfb_active, const FLOAT32 *ptr_mask_low_factor,

                                     const FLOAT32 *ptr_mask_high_factor,

                                     FLOAT32 *ptr_spreaded_energy) {

  WORD32 i;

  FLOAT32 temp;

  const FLOAT32 *ptr_mask_low = &ptr_mask_low_factor[sfb_active - 2];

  const FLOAT32 *ptr_mask_high = &ptr_mask_high_factor[1];

  FLOAT32 temp_nrg = ptr_spreaded_energy[0];

  FLOAT32 *ptr_spreaded_temp = ptr_spreaded_energy;

  for (i = sfb_active - 2; i >= 0; i--) {

    FLOAT32 temp_mask = *ptr_mask_high++;

    temp = (temp_mask * temp_nrg);

    temp_nrg = *++ptr_spreaded_temp;

    if (temp_nrg < temp) {

      *ptr_spreaded_temp = temp;

      temp_nrg = temp;

    }

  }

  temp_nrg = ptr_spreaded_energy[sfb_active - 1];

  for (i = sfb_active - 2; i >= 0; i--) {

    FLOAT32 temp_mask = *ptr_mask_low--;

    temp = (temp_mask * temp_nrg);

    temp_nrg = ptr_spreaded_energy[i];

    if (temp_nrg < temp) {

      ptr_spreaded_energy[i] = temp;

      temp_nrg = temp;

    }

  }

}