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/******************************************************************************
* *
* 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_psy_utils.h"
#include "ixheaac_basic_ops32.h"
#include "ixheaac_basic_ops16.h"
#include "ixheaac_basic_ops40.h"
#include "ixheaac_basic_ops.h"
VOID ia_enhaacplus_enc_init_pre_echo_control(FLOAT32 *ptr_pb_threshold_nm1, WORD32 num_pb,
FLOAT32 *ptr_pb_threshold_quiet) {
memcpy(ptr_pb_threshold_nm1, ptr_pb_threshold_quiet, num_pb * sizeof(*ptr_pb_threshold_nm1));
}
VOID ia_enhaacplus_enc_pre_echo_control(FLOAT32 *ptr_threshold_nm1, WORD32 num_sfb,
FLOAT32 min_rem_thr_factor, FLOAT32 *ptr_threshold) {
WORD32 i;
FLOAT32 tmp_threshold1, tmp_threshold2;
FLOAT32 *ptr_tmp_threshold = &ptr_threshold[0];
FLOAT32 *ptr_tmp_threshold_nm1 = &ptr_threshold_nm1[0];
for (i = num_sfb - 1; i >= 0; i--) {
FLOAT32 tmp_var;
tmp_var = *ptr_tmp_threshold;
tmp_threshold1 = *ptr_tmp_threshold_nm1 * 2.0f;
tmp_threshold2 = (min_rem_thr_factor * tmp_var);
/* copy thresholds to internal memory */
*ptr_tmp_threshold_nm1++ = tmp_var;
tmp_var = MIN(tmp_var, tmp_threshold1);
tmp_var = MAX(tmp_var, tmp_threshold2);
*ptr_tmp_threshold++ = tmp_var;
}
}
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