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

 *                                                                            *

 * 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 <string.h>

#include "ixheaac_type_def.h"

#include "ixheaac_constants.h"

#include "ixheaace_aac_constants.h"

#include "ixheaace_sbr_def.h"

#include "ixheaace_resampler.h"

#include "ixheaace_sbr_rom.h"

#include "ixheaace_error_codes.h"

#include "ixheaac_error_standards.h"

IA_ERRORCODE ia_enhaacplus_enc_init_iir_resampler(ixheaace_iir21_resampler *pstr_resampler,

                                                  WORD32 ratio,

                                                  ixheaace_resampler_table *pstr_resampler_table)

{

  struct ixheaace_iir_params const *current_set = NULL;

  IA_ERRORCODE error = IA_NO_ERROR;

  if (pstr_resampler == NULL) {

    return IA_EXHEAACE_INIT_FATAL_RESAMPLER_INIT_FAILED;

  }

  memset(pstr_resampler->iir_filter.ring_buf_1, 0,

         (LEN_RING_BUF * sizeof(pstr_resampler->iir_filter.ring_buf_1[0])));

  memset(pstr_resampler->iir_filter.ring_buf_2, 0,

         (LEN_RING_BUF * sizeof(pstr_resampler->iir_filter.ring_buf_2[0])));

  current_set = &(pstr_resampler_table->iir_param_set);

  pstr_resampler->iir_filter.ptr_coeff_iir_den = current_set->coeff_iir_den;

  pstr_resampler->iir_filter.ptr_coeff_iir_num = current_set->coeff_iir_num;

  pstr_resampler->iir_filter.max = current_set->max;

  pstr_resampler->delay = current_set->delay;

  pstr_resampler->ratio = ratio;

  pstr_resampler->pending = ratio - 1;

  return error;

}

IA_ERRORCODE

ia_enhaacplus_enc_init_iir_sos_resampler(ixheaace_iir_sos_resampler *pstr_resampler, WORD32 ratio,

                                         ixheaace_resampler_sos_table *pstr_resampler_table)

{

  struct ixheaace_iir_params_sos const *current_set = NULL;

  IA_ERRORCODE error = IA_NO_ERROR;

  if (pstr_resampler == NULL) {

    error = IA_EXHEAACE_INIT_FATAL_USAC_RESAMPLER_INIT_FAILED;

    return error;

  }

  memset(pstr_resampler->iir_filter.ring_buf_sos_1, 0,

         (LEN_RING_BUF_SOS_1 * sizeof(pstr_resampler->iir_filter.ring_buf_sos_1[0])));

  memset(pstr_resampler->iir_filter.ring_buf_sos_2, 0,

         (LEN_RING_BUF_SOS_2 * sizeof(pstr_resampler->iir_filter.ring_buf_sos_2[0])));

  current_set = &(pstr_resampler_table->iir_param_set_sos);

  pstr_resampler->iir_filter.ptr_coeff_iir_den = &current_set->coeff_iir_sos_den[0][0];

  pstr_resampler->iir_filter.ptr_coeff_iir_num = &current_set->coeff_iir_sos_num[0][0];

  pstr_resampler->ratio = ratio;

  pstr_resampler->pending = ratio - 1;

  pstr_resampler->iir_filter.gain_sos = current_set->gain_sos;

  pstr_resampler->delay = current_set->delay;

  return error;

}