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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
*/
#pragma once
#define IXHEAACE_NUM_QMF_SYNTH_CHANNELS (64)
#define IXHEAACE_TIMESLOT_BUFFER_SIZE (78)
#define IXHEAACE_PS_BUF4_SIZE \
(sizeof(WORD32) * (IXHEAACE_QMF_TIME_SLOTS + IXHEAACE_QMF_BUFFER_MOVE) + \
sizeof(WORD32 *) * (IXHEAACE_NUM_QMF_BANDS_IN_HYBRID + \
IXHEAACE_NUM_QMF_BANDS_IN_HYBRID * IXHEAACE_QMF_BUFFER_MOVE))
typedef struct {
const FLOAT32 *ptr_flt_filter;
const FLOAT32 *ptr_flt_cos_twiddle;
const FLOAT32 *ptr_flt_alt_sin_twiddle;
FLOAT32 *ptr_flt_time_buf;
FLOAT32 *ptr_flt_work_buf;
WORD16 flag;
SIZE_T offset_l;
SIZE_T offset_r;
WORD16 offset;
const FLOAT32 *ptr_filter;
const FLOAT32 *ptr_cos_twiddle;
const FLOAT32 *ptr_sin_twiddle;
const FLOAT32 *ptr_alt_sin_twiddle;
FLOAT32 *ptr_work_buf;
FLOAT32 *ptr_sbr_qmf_states_ana;
FLOAT32 *ptr_qmf_states_buf;
FLOAT32 *ptr_qmf_states_curr_pos;
const FLOAT32 *ptr_ref_coeff_l;
const FLOAT32 *ptr_ref_coeff_r;
const FLOAT32 *ptr_cld_filt;
FLOAT32 *ptr_fp1;
FLOAT32 *ptr_fp2;
WORD32 start_coeff_cnt;
WORD32 num_time_slots;
WORD32 rate;
} ixheaace_str_sbr_qmf_filter_bank;
typedef ixheaace_str_sbr_qmf_filter_bank *ixheaace_pstr_sbr_qmf_filter_bank;
VOID ixheaace_sbr_analysis_filtering(const FLOAT32 *ptr_time_in, WORD32 time_sn_stride,
FLOAT32 **ptr_ana_r, FLOAT32 **ptr_ana_i,
ixheaace_pstr_sbr_qmf_filter_bank pstr_qmf_bank,
ixheaace_str_qmf_tabs *pstr_qmf_tab, WORD32 num_qmf_subsamp,
WORD32 is_ld_sbr, FLOAT32 *ptr_sbr_scratch);
VOID ixheaace_create_qmf_bank(ixheaace_pstr_sbr_qmf_filter_bank pstr_sbr_qmf_handle,
ixheaace_str_sbr_tabs *pstr_sbr_tab, WORD32 is_ld_sbr);
VOID ixheaace_get_energy_from_cplx_qmf(
FLOAT32 **ptr_energy_vals, FLOAT32 **ptr_real_values, FLOAT32 **ptr_imag_values,
WORD32 is_ld_sbr, WORD32 num_time_slots, WORD32 samp_ratio_fac,
FLOAT32 qmf_buf_real[IXHEAACE_TIMESLOT_BUFFER_SIZE + 2 * 32][IXHEAACE_NUM_QMF_SYNTH_CHANNELS],
FLOAT32 qmf_buf_imag[IXHEAACE_TIMESLOT_BUFFER_SIZE + 2 * 32][IXHEAACE_NUM_QMF_SYNTH_CHANNELS],
WORD32 op_delay, WORD32 harmonic_sbr);
VOID ixheaace_enc_synthesis_qmf_filtering(FLOAT32 **ptr_sbr_re, FLOAT32 **ptr_sbr_im,
FLOAT32 *time_float,
ixheaace_pstr_sbr_qmf_filter_bank pstr_qmf_bank);
VOID ixheaace_create_synthesis_qmf_bank(
ixheaace_pstr_sbr_qmf_filter_bank pstr_sbr_qmf_filter_bank, WORD32 *ptr_common_buffer,
ixheaace_str_sbr_tabs *pstr_sbr_tab);
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