/******************************************************************************
* *
* Copyright (C) 2018 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 <ixheaacd_type_def.h>
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_config.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_mps_dec.h"
#include "ixheaacd_mps_interface.h"
#include <ixheaacd_type_def.h>
#include "ixheaacd_constants.h"
#include <ixheaacd_basic_ops32.h>
#include <ixheaacd_basic_ops40.h>
#include <math.h>
#include <memory.h>
#include <assert.h>
#undef ABS_THR
#define ABS_THR 1.0e-9f
#define ICC_FIX
#define UNSINGULARIZE_FIX
#define QUANTIZE_PARS_FIX
#define PI 3.14159265358979f
#define ONE_IN_Q28 (268435456)
#define MINUS_ONE_IN_Q28 (-268435456)
#define PI_Q28 (843314856)
#define PI_Q27 (421657428)
#define PI_BY_8_Q28 (105414352)
extern const WORD32 ixheaacd_im_weight_Q28[16][8][31];
extern const WORD32 ixheaacd_re_weight_Q28[16][8][31];
extern const WORD32 ixheaacd_beta_Q28[16][8][31];
extern const WORD32 ixheaacd_weight_Q28[16][8][31];
extern const WORD32 ixheaacd_c_l_table_Q31[31];
extern const WORD32 ixheaacd_sin_table_Q31[8][31];
extern const WORD32 ixheaacd_cos_table_Q31[8][31];
extern const WORD32 ixheaacd_atan_table_Q28[16][8][31];
extern WORD32 ixheaacd_ipd_de_quant_table_q28[16];
#define P_PI 3.1415926535897932
#define PI_IN_Q28 843314880
extern WORD32 ixheaacd_ipd_de_quant_table_q28[16];
#define P_PI 3.1415926535897932
#define PI_IN_Q28 843314880
static WORD32 ixheaacd_mps_phase_wraping(WORD32 phase) {
const WORD32 pi_2 = 2 * PI_IN_Q28;
while (phase < 0) phase += pi_2;
while (phase >= pi_2) phase -= pi_2;
assert((phase >= 0) && (phase < pi_2));
return phase;
}
static VOID ixheaacd_mps_buffer_pre_and_mix_matrix(
ia_mps_dec_state_struct *self) {
WORD32 pb, row, col;
for (pb = 0; pb < self->bs_param_bands; pb++) {
for (row = 0; row < MAX_M_INPUT; row++) {
for (col = 0; col < MAX_M_OUTPUT; col++) {
self->m1_param_re_prev[pb][row][col] =
self->m1_param_re[self->num_parameter_sets_prev - 1][pb][row][col];
self->m1_param_im_prev[pb][row][col] =
self->m1_param_im[self->num_parameter_sets_prev - 1][pb][row][col];
self->m2_decor_re_prev[pb][row][col] =
self->m2_decor_re[self->num_parameter_sets_prev - 1][pb][row][col];
self->m2_decor_im_prev[pb][row][col] =
self->m2_decor_im[self->num_parameter_sets_prev - 1][pb][row][col];
self->m2_resid_re_prev[pb][row][col] =
self->m2_resid_re[self->num_parameter_sets_prev - 1][pb][row][col];
self->m2_resid_im_prev[pb][row][col] =
self->m2_resid_im[self->num_parameter_sets_prev - 1][pb][row][col];
}
}
}
for (pb = 0; pb < self->bs_param_bands; pb++) {
self->phase_l_prev[pb] =
self->phase_l[self->num_parameter_sets_prev - 1][pb];
self->phase_r_prev[pb] =
self->phase_r[self->num_parameter_sets_prev - 1][pb];
}
}
VOID ixheaacd_fix_to_float_int(WORD32 *inp, FLOAT32 *out, WORD32 length,
FLOAT32 q_fac) {
WORD32 i;
FLOAT32 m_qfac = 1.0f / q_fac;
for (i = 0; i < length; i++) out[i] = (FLOAT32)(inp[i]) * m_qfac;
}
VOID ixheaacd_pre_and_mix_matrix_calculation(ia_mps_dec_state_struct *self) {
WORD32 ps, pb;
ia_mps_bs_frame *curr_bit_stream = &(self->bs_frame);
WORD32 h_imag[2 * MAX_PARAMETER_BANDS];
WORD32
h_real[6 * MAX_PARAMETER_BANDS];
ixheaacd_mps_buffer_pre_and_mix_matrix(self);
for (ps = 0; ps < self->num_parameter_sets; ps++) {
WORD32 *h_im = &h_imag[0];
WORD32 *h_re = &h_real[0];
memset(h_real, 0, 6 * MAX_PARAMETER_BANDS * sizeof(WORD32));
memset(h_imag, 0, 2 * MAX_PARAMETER_BANDS * sizeof(WORD32));
switch (self->config->bs_phase_coding) {
case 0:
if (self->residual_coding) {
ixheaacd_mps_par2umx_pred(self, curr_bit_stream, h_imag, h_real, ps,
self->res_bands);
} else {
ixheaacd_mps_par2umx_ps(self, curr_bit_stream, h_real, ps);
}
break;
case 1:
ixheaacd_mps_par2umx_ps_ipd_opd(self, curr_bit_stream, h_real, ps);
break;
case 2:
ixheaacd_mps_par2umx_pred(self, curr_bit_stream, h_imag, h_real, ps,
self->res_bands);
break;
}
for (pb = 0; pb < self->bs_param_bands; pb++) {
self->m1_param_re[ps][pb][0][0] = 1073741824;
self->m1_param_re[ps][pb][1][0] = 1073741824;
self->m1_param_im[ps][pb][0][0] = 0;
self->m1_param_im[ps][pb][1][0] = 0;
self->m2_resid_re[ps][pb][0][0] = *h_re++;
self->m2_resid_im[ps][pb][0][0] = *h_im++;
self->m2_resid_im[ps][pb][0][1] = 0;
self->m2_resid_re[ps][pb][1][0] = *h_re++;
self->m2_resid_im[ps][pb][1][0] = *h_im++;
self->m2_resid_im[ps][pb][1][1] = 0;
self->m2_decor_re[ps][pb][0][0] = 0;
self->m2_decor_im[ps][pb][0][0] = 0;
self->m2_decor_re[ps][pb][0][1] = *h_re++;
self->m2_decor_im[ps][pb][0][1] = 0;
self->m2_decor_re[ps][pb][1][0] = 0;
self->m2_decor_im[ps][pb][1][0] = 0;
self->m2_decor_re[ps][pb][1][1] = *h_re++;
self->m2_decor_im[ps][pb][1][1] = 0;
self->m2_resid_re[ps][pb][0][1] = *h_re++;
self->m2_resid_re[ps][pb][1][1] = *h_re++;
}
}
ixheaacd_mps_smoothing_opd(self);
ixheaacd_fix_to_float_int(&self->phase_l_fix[0][0], &self->phase_l[0][0],
MAX_PARAMETER_SETS_MPS * MAX_PARAMETER_BANDS,
268435456.0f);
ixheaacd_fix_to_float_int(&self->phase_r_fix[0][0], &self->phase_r[0][0],
MAX_PARAMETER_SETS_MPS * MAX_PARAMETER_BANDS,
268435456.0f);
}
static VOID ixheaacd_mps_par2umx_ps_core(WORD32 cld[MAX_PARAMETER_BANDS],
WORD32 icc[MAX_PARAMETER_BANDS],
WORD32 ott_band_count,
WORD32 *h_real) {
WORD32 band;
WORD32 c_l_temp, c_r_temp, cld_idx, icc_idx, temp;
for (band = 0; band < ott_band_count; band++) {
cld_idx = *cld++ + 15;
icc_idx = *icc++;
icc_idx = icc_idx & 7;
c_l_temp = (ixheaacd_c_l_table_Q31[cld_idx]);
c_r_temp = (ixheaacd_c_l_table_Q31[30 - cld_idx]);
temp = ixheaacd_cos_table_Q31[icc_idx][cld_idx];
*h_real++ = ixheaacd_mult32(temp, c_l_temp) >> 2;
temp = ixheaacd_cos_table_Q31[icc_idx][30 - cld_idx];
*h_real++ = ixheaacd_mult32(temp, c_r_temp) >> 2;
temp = ixheaacd_sin_table_Q31[icc_idx][cld_idx];
*h_real++ = ixheaacd_mult32(temp, c_l_temp) >> 2;
temp = -ixheaacd_sin_table_Q31[icc_idx][30 - cld_idx];
*h_real++ = ixheaacd_mult32(temp, c_r_temp) >> 2;
h_real += 2;
}
}
VOID ixheaacd_mps_par2umx_ps(ia_mps_dec_state_struct *self,
ia_mps_bs_frame *curr_bit_stream, WORD32 *h_real,
WORD32 param_set_idx) {
ixheaacd_mps_par2umx_ps_core(curr_bit_stream->cld_idx[param_set_idx],
curr_bit_stream->icc_idx[param_set_idx],
self->bs_param_bands, h_real);
}
static VOID ixheaacd_mps_opd_calc(ia_mps_dec_state_struct *self,
ia_mps_bs_frame *curr_bit_stream,
WORD32 param_set_idx,
WORD32 opd[MAX_PARAMETER_BANDS]) {
WORD32 band;
for (band = 0; band < self->num_bands_ipd; band++) {
WORD32 cld_idx = curr_bit_stream->cld_idx[param_set_idx][band] + 15;
WORD32 ipd_idx = (curr_bit_stream->ipd_idx[param_set_idx][band]) & 15;
WORD32 icc_idx = curr_bit_stream->icc_idx[param_set_idx][band];
if ((cld_idx == 15) && (ipd_idx == 8))
opd[band] = 0;
else
opd[band] = ixheaacd_atan_table_Q28[ipd_idx][icc_idx][cld_idx];
}
}
VOID ixheaacd_mps_par2umx_ps_ipd_opd(ia_mps_dec_state_struct *self,
ia_mps_bs_frame *curr_bit_stream,
WORD32 *h_real, WORD32 param_set_idx) {
WORD32 opd[MAX_PARAMETER_BANDS];
WORD32 ott_band_count = self->bs_param_bands;
WORD32 num_bands_ipd = self->num_bands_ipd;
WORD32 band;
ixheaacd_mps_par2umx_ps_core(curr_bit_stream->cld_idx[param_set_idx],
curr_bit_stream->icc_idx[param_set_idx],
ott_band_count, h_real);
if (self->bs_phase_mode) {
ixheaacd_mps_opd_calc(self, curr_bit_stream, param_set_idx, opd);
for (band = 0; band < num_bands_ipd; band++) {
WORD32 ipd_idx = curr_bit_stream->ipd_idx[param_set_idx][band] & 15;
WORD32 ipd = ixheaacd_ipd_de_quant_table_q28[ipd_idx];
self->phase_l_fix[param_set_idx][band] =
ixheaacd_mps_phase_wraping(opd[band]);
self->phase_r_fix[param_set_idx][band] =
ixheaacd_mps_phase_wraping(opd[band] - ipd);
}
} else {
num_bands_ipd = 0;
}
for (band = num_bands_ipd; band < ott_band_count; band++) {
self->phase_l_fix[param_set_idx][band] = 0;
self->phase_r_fix[param_set_idx][band] = 0;
}
}
VOID ixheaacd_mps_par2umx_pred(ia_mps_dec_state_struct *self,
ia_mps_bs_frame *curr_bit_stream, WORD32 *h_imag,
WORD32 *h_real, WORD32 param_set_idx,
WORD32 res_bands) {
WORD32 band;
for (band = 0; band < self->bs_param_bands; band++) {
WORD32 cld_idx = curr_bit_stream->cld_idx[param_set_idx][band] + 15;
WORD32 icc_idx = curr_bit_stream->icc_idx[param_set_idx][band];
WORD32 ipd_idx = curr_bit_stream->ipd_idx[param_set_idx][band] & 15;
if ((band < self->num_bands_ipd) && (cld_idx == 15) && (icc_idx == 0) &&
(ipd_idx == 8)) {
WORD32 gain = 111848107;
*h_imag++ = 0;
*h_imag++ = 0;
if (band < res_bands) {
*h_real++ = gain;
*h_real++ = gain;
h_real += 2;
*h_real++ = gain;
*h_real++ = -gain;
} else {
*h_real++ = gain;
*h_real++ = -gain;
h_real += 4;
}
} else {
WORD32 weight_fix, re_weight_fix, im_weight_fix;
weight_fix = ixheaacd_weight_Q28[ipd_idx][icc_idx][cld_idx];
re_weight_fix = ixheaacd_re_weight_Q28[ipd_idx][icc_idx][cld_idx];
im_weight_fix = ixheaacd_im_weight_Q28[ipd_idx][icc_idx][cld_idx];
if (band < self->num_bands_ipd) {
weight_fix = ixheaacd_weight_Q28[ipd_idx][icc_idx][cld_idx];
re_weight_fix = ixheaacd_re_weight_Q28[ipd_idx][icc_idx][cld_idx];
im_weight_fix = ixheaacd_im_weight_Q28[ipd_idx][icc_idx][cld_idx];
} else {
weight_fix = ixheaacd_weight_Q28[0][icc_idx][cld_idx];
re_weight_fix = ixheaacd_re_weight_Q28[0][icc_idx][cld_idx];
im_weight_fix = ixheaacd_im_weight_Q28[0][icc_idx][cld_idx];
}
*h_real++ = weight_fix - re_weight_fix;
*h_imag++ = -im_weight_fix;
*h_real++ = weight_fix + re_weight_fix;
*h_imag++ = im_weight_fix;
if (band < res_bands) {
h_real += 2;
*h_real++ = weight_fix;
*h_real++ = -weight_fix;
} else {
WORD32 beta = ixheaacd_beta_Q28[ipd_idx][icc_idx][cld_idx];
*h_real++ = beta;
*h_real++ = -beta;
h_real += 2;
}
}
}
}
WORD32 ixheaacd_mps_apply_pre_matrix(ia_mps_dec_state_struct *self) {
WORD32 ts, qs, row, col = 0;
WORD32 err = 0;
err = ixheaacd_mps_upmix_interp(
self->m1_param_re, self->r_out_re_scratch_m1, self->m1_param_re_prev,
(self->dir_sig_count + self->decor_sig_count), 1, self);
if (err < 0) return err;
err = ixheaacd_mps_upmix_interp(
self->m1_param_im, self->r_out_im_scratch_m1, self->m1_param_im_prev,
(self->dir_sig_count + self->decor_sig_count), 1, self);
if (err < 0) return err;
ixheaacd_fix_to_float_int(
(WORD32 *)(self->r_out_re_scratch_m1), (FLOAT32 *)(self->r_out_re_in_m1),
MAX_TIME_SLOTS * MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT,
1073741824);
ixheaacd_fix_to_float_int(
(WORD32 *)self->r_out_im_scratch_m1, (FLOAT32 *)self->r_out_im_in_m1,
MAX_TIME_SLOTS * MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT,
1073741824);
for (ts = 0; ts < self->time_slots; ts++) {
for (qs = 0; qs < 2; qs++) {
WORD32 sign = -1;
WORD32 indx = self->hyb_band_to_processing_band_table[qs];
for (row = 0; row < (self->dir_sig_count + self->decor_sig_count);
row++) {
FLOAT32 sum_real = 0.0f;
FLOAT32 sum_imag = 0.0f;
{
FLOAT32 real = self->hyb_in[0][ts][qs].re *
self->r_out_re_in_m1[ts][indx][row][col] -
self->hyb_in[0][ts][qs].im *
self->r_out_im_in_m1[ts][indx][row][col] * sign;
FLOAT32 imag = self->hyb_in[0][ts][qs].re *
self->r_out_im_in_m1[ts][indx][row][col] * sign +
self->hyb_in[0][ts][qs].im *
self->r_out_re_in_m1[ts][indx][row][col];
sum_real += real;
sum_imag += imag;
}
self->v[row][ts][qs].re = sum_real;
self->v[row][ts][qs].im = sum_imag;
}
}
for (qs = 2; qs < self->hyb_band_count; qs++) {
WORD32 sign = 1;
WORD32 indx = self->hyb_band_to_processing_band_table[qs];
for (row = 0; row < (self->dir_sig_count + self->decor_sig_count);
row++) {
FLOAT32 sum_real = 0.0f;
FLOAT32 sum_imag = 0.0f;
{
FLOAT32 real = self->hyb_in[0][ts][qs].re *
self->r_out_re_in_m1[ts][indx][row][col] -
self->hyb_in[0][ts][qs].im *
self->r_out_im_in_m1[ts][indx][row][col] * sign;
FLOAT32 imag = self->hyb_in[0][ts][qs].re *
self->r_out_im_in_m1[ts][indx][row][col] * sign +
self->hyb_in[0][ts][qs].im *
self->r_out_re_in_m1[ts][indx][row][col];
sum_real += real;
sum_imag += imag;
}
self->v[row][ts][qs].re = sum_real;
self->v[row][ts][qs].im = sum_imag;
}
}
}
return 0;
}
WORD32 ixheaacd_mps_apply_mix_matrix(ia_mps_dec_state_struct *self) {
WORD32 ts, qs, row, col;
WORD32 complex_m2 = ((self->config->bs_phase_coding != 0));
WORD32 phase_interpolation = (self->config->bs_phase_coding == 1);
WORD32 err = 0;
err = ixheaacd_mps_upmix_interp(
self->m2_decor_re, self->r_diff_out_re_fix_in_m2, self->m2_decor_re_prev,
self->out_ch_count, (self->dir_sig_count + self->decor_sig_count), self);
if (err < 0) return err;
err = ixheaacd_mps_upmix_interp(
self->m2_resid_re, self->r_out_re_fix_in_m2, self->m2_resid_re_prev,
self->out_ch_count, (self->dir_sig_count + self->decor_sig_count), self);
if (err < 0) return err;
ixheaacd_fix_to_float_int(
(WORD32 *)self->r_out_re_fix_in_m2, (FLOAT32 *)self->r_out_re_in_m2,
MAX_TIME_SLOTS * MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT,
268435456);
ixheaacd_fix_to_float_int(
(WORD32 *)self->r_diff_out_re_fix_in_m2,
(FLOAT32 *)self->r_out_diff_re_in_m2,
MAX_TIME_SLOTS * MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT,
268435456);
if (complex_m2 && !phase_interpolation) {
err = ixheaacd_mps_upmix_interp(
self->m2_decor_im, self->r_diff_out_im_fix_in_m2,
self->m2_decor_im_prev, self->out_ch_count,
(self->dir_sig_count + self->decor_sig_count), self);
if (err < 0) return err;
err = ixheaacd_mps_upmix_interp(
self->m2_resid_im, self->r_out_im_fix_in_m2, self->m2_resid_im_prev,
self->out_ch_count, (self->dir_sig_count + self->decor_sig_count),
self);
if (err < 0) return err;
ixheaacd_fix_to_float_int(
(WORD32 *)self->r_diff_out_im_fix_in_m2,
(FLOAT32 *)self->r_out_diff_im_in_m2,
MAX_TIME_SLOTS * MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT,
268435456);
ixheaacd_fix_to_float_int(
(WORD32 *)self->r_out_im_fix_in_m2, (FLOAT32 *)self->r_out_im_in_m2,
MAX_TIME_SLOTS * MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT,
268435456);
}
if (phase_interpolation) {
ixheaacd_mps_phase_interpolation(
self->phase_l, self->phase_r, self->phase_l_prev, self->phase_r_prev,
self->r_out_ph_re_in_m2, self->r_out_ph_im_in_m2, self);
for (ts = 0; ts < self->time_slots; ts++) {
WORD32 pb;
for (pb = 0; pb < self->bs_param_bands; pb++) {
for (row = 0; row < self->out_ch_count; row++) {
for (col = 0; col < (self->dir_sig_count + self->decor_sig_count);
col++) {
self->r_out_im_in_m2[ts][pb][row][col] =
self->r_out_re_in_m2[ts][pb][row][col] *
self->r_out_ph_im_in_m2[ts][pb][row];
self->r_out_re_in_m2[ts][pb][row][col] =
self->r_out_re_in_m2[ts][pb][row][col] *
self->r_out_ph_re_in_m2[ts][pb][row];
self->r_out_diff_im_in_m2[ts][pb][row][col] =
self->r_out_diff_re_in_m2[ts][pb][row][col] *
self->r_out_ph_im_in_m2[ts][pb][row];
self->r_out_diff_re_in_m2[ts][pb][row][col] =
self->r_out_diff_re_in_m2[ts][pb][row][col] *
self->r_out_ph_re_in_m2[ts][pb][row];
}
}
}
}
}
for (ts = 0; ts < self->time_slots; ts++) {
for (qs = 0; qs < self->hyb_band_count; qs++) {
WORD32 indx = self->hyb_band_to_processing_band_table[qs];
for (row = 0; row < self->out_ch_count; row++) {
FLOAT32 sum_re_dir = 0;
FLOAT32 sum_re_diff = 0;
FLOAT32 sum_im_dir = 0;
FLOAT32 sum_im_diff = 0;
for (col = 0; col < (self->dir_sig_count + self->decor_sig_count);
col++) {
sum_re_dir += self->w_dir[col][ts][qs].re *
self->r_out_re_in_m2[ts][indx][row][col];
sum_im_dir += self->w_dir[col][ts][qs].im *
self->r_out_re_in_m2[ts][indx][row][col];
sum_re_diff += self->w_diff[col][ts][qs].re *
self->r_out_diff_re_in_m2[ts][indx][row][col];
sum_im_diff += self->w_diff[col][ts][qs].im *
self->r_out_diff_re_in_m2[ts][indx][row][col];
}
self->hyb_dir_out[row][ts][qs].re = sum_re_dir;
self->hyb_dir_out[row][ts][qs].im = sum_im_dir;
self->hyb_diff_out[row][ts][qs].re = sum_re_diff;
self->hyb_diff_out[row][ts][qs].im = sum_im_diff;
}
}
}
if (complex_m2) {
for (ts = 0; ts < self->time_slots; ts++) {
for (qs = 0; qs < 2; qs++) {
WORD32 indx = self->hyb_band_to_processing_band_table[qs];
for (row = 0; row < self->out_ch_count; row++) {
FLOAT32 sum_re_dir = self->hyb_dir_out[row][ts][qs].re;
FLOAT32 sum_im_dir = self->hyb_dir_out[row][ts][qs].im;
FLOAT32 sum_re_diff = self->hyb_diff_out[row][ts][qs].re;
FLOAT32 sum_im_diff = self->hyb_diff_out[row][ts][qs].im;
for (col = 0; col < (self->dir_sig_count + self->decor_sig_count);
col++) {
sum_re_dir += self->w_dir[col][ts][qs].im *
self->r_out_im_in_m2[ts][indx][row][col];
sum_im_dir -= self->w_dir[col][ts][qs].re *
self->r_out_im_in_m2[ts][indx][row][col];
sum_re_diff += self->w_diff[col][ts][qs].im *
self->r_out_diff_im_in_m2[ts][indx][row][col];
sum_im_diff -= self->w_diff[col][ts][qs].re *
self->r_out_diff_im_in_m2[ts][indx][row][col];
}
self->hyb_dir_out[row][ts][qs].re = sum_re_dir;
self->hyb_dir_out[row][ts][qs].im = sum_im_dir;
self->hyb_diff_out[row][ts][qs].re = sum_re_diff;
self->hyb_diff_out[row][ts][qs].im = sum_im_diff;
}
}
for (qs = 2; qs < self->hyb_band_count; qs++) {
WORD32 indx = self->hyb_band_to_processing_band_table[qs];
for (row = 0; row < self->out_ch_count; row++) {
FLOAT32 sum_re_dir = self->hyb_dir_out[row][ts][qs].re;
FLOAT32 sum_im_dir = self->hyb_dir_out[row][ts][qs].im;
FLOAT32 sum_re_diff = self->hyb_diff_out[row][ts][qs].re;
FLOAT32 sum_im_diff = self->hyb_diff_out[row][ts][qs].im;
for (col = 0; col < (self->dir_sig_count + self->decor_sig_count);
col++) {
sum_re_dir -= self->w_dir[col][ts][qs].im *
self->r_out_im_in_m2[ts][indx][row][col];
sum_im_dir += self->w_dir[col][ts][qs].re *
self->r_out_im_in_m2[ts][indx][row][col];
sum_re_diff -= self->w_diff[col][ts][qs].im *
self->r_out_diff_im_in_m2[ts][indx][row][col];
sum_im_diff += self->w_diff[col][ts][qs].re *
self->r_out_diff_im_in_m2[ts][indx][row][col];
}
self->hyb_dir_out[row][ts][qs].re = sum_re_dir;
self->hyb_dir_out[row][ts][qs].im = sum_im_dir;
self->hyb_diff_out[row][ts][qs].re = sum_re_diff;
self->hyb_diff_out[row][ts][qs].im = sum_im_diff;
}
}
}
}
return 0;
}
static PLATFORM_INLINE WORD32 ixheaacd_mult32_shl2(WORD32 a, WORD32 b) {
WORD32 result;
WORD64 temp_result;
temp_result = (WORD64)a * (WORD64)b;
result = (WORD32)(temp_result >> 30);
return (result);
}
WORD32 ixheaacd_mps_upmix_interp(
WORD32 m_matrix[MAX_PARAMETER_SETS_MPS][MAX_PARAMETER_BANDS][MAX_M_OUTPUT]
[MAX_M_INPUT],
WORD32 r_matrix[MAX_TIME_SLOTS][MAX_PARAMETER_BANDS][MAX_M_OUTPUT]
[MAX_M_INPUT],
WORD32 m_matrix_prev[MAX_PARAMETER_BANDS][MAX_M_OUTPUT][MAX_M_INPUT],
WORD32 num_rows, WORD32 num_cols, ia_mps_dec_state_struct *self) {
WORD32 ts, ps, pb, row, col, i;
for (pb = 0; pb < self->bs_param_bands; pb++) {
for (row = 0; row < num_rows; row++) {
for (col = 0; col < num_cols; col++) {
ps = 0;
ts = 0;
if (MAX_TIME_SLOTS < (self->param_slot_diff[0])) return -1;
for (i = 1; i <= (WORD32)self->param_slot_diff[0]; i++) {
WORD32 alpha = i * self->inv_param_slot_diff_Q30[ps];
WORD32 one_minus_alpha = 1073741824 - alpha;
r_matrix[ts][pb][row][col] =
((ixheaacd_mult32_shl2(m_matrix_prev[pb][row][col],
one_minus_alpha) +
ixheaacd_mult32_shl2(alpha, m_matrix[ps][pb][row][col])));
ts++;
}
for (ps = 1; ps < self->num_parameter_sets; ps++) {
if (MAX_TIME_SLOTS < (ts + self->param_slot_diff[ps])) return -1;
for (i = 1; i <= (WORD32)self->param_slot_diff[ps]; i++) {
WORD32 alpha = i * self->inv_param_slot_diff_Q30[ps];
WORD32 one_minus_alpha = 1073741824 - alpha;
r_matrix[ts][pb][row][col] =
((ixheaacd_mult32_shl2(m_matrix[ps - 1][pb][row][col],
one_minus_alpha) +
ixheaacd_mult32_shl2(alpha, m_matrix[ps][pb][row][col])));
ts++;
}
}
}
}
}
return 0;
}
static FLOAT32 ixheaacd_mps_angle_interpolation(FLOAT32 angle1, FLOAT32 angle2,
FLOAT32 alpha) {
while (angle2 - angle1 > (FLOAT32)P_PI)
angle1 = angle1 + 2.0f * (FLOAT32)P_PI;
while (angle1 - angle2 > (FLOAT32)P_PI)
angle2 = angle2 + 2.0f * (FLOAT32)P_PI;
return (1 - alpha) * angle1 + alpha * angle2;
}
VOID ixheaacd_mps_phase_interpolation(
FLOAT32 pl[MAX_PARAMETER_SETS_MPS][MAX_PARAMETER_BANDS],
FLOAT32 pr[MAX_PARAMETER_SETS_MPS][MAX_PARAMETER_BANDS],
FLOAT32 pl_prev[MAX_PARAMETER_BANDS], FLOAT32 pr_prev[MAX_PARAMETER_BANDS],
FLOAT32 r_re[MAX_TIME_SLOTS][MAX_PARAMETER_BANDS][2],
FLOAT32 r_im[MAX_TIME_SLOTS][MAX_PARAMETER_BANDS][2],
ia_mps_dec_state_struct *self) {
WORD32 ts, ps, pb;
WORD32 i;
for (pb = 0; pb < self->bs_param_bands; pb++) {
ps = 0;
ts = 0;
for (i = 1; i <= self->param_slot_diff[ps]; i++) {
FLOAT32 alpha = (FLOAT32)i * self->inv_param_slot_diff[ps];
FLOAT32 t;
t = ixheaacd_mps_angle_interpolation(pl_prev[pb], pl[ps][pb], alpha);
r_re[ts][pb][0] = (FLOAT32)cos(t);
r_im[ts][pb][0] = (FLOAT32)sin(t);
t = ixheaacd_mps_angle_interpolation(pr_prev[pb], pr[ps][pb], alpha);
r_re[ts][pb][1] = (FLOAT32)cos(t);
r_im[ts][pb][1] = (FLOAT32)sin(t);
ts++;
}
for (ps = 1; ps < self->num_parameter_sets; ps++) {
for (i = 1; i <= self->param_slot_diff[ps]; i++) {
FLOAT32 alpha = (FLOAT32)i * self->inv_param_slot_diff[ps];
FLOAT32 t;
t = ixheaacd_mps_angle_interpolation(pl[ps - 1][pb], pl[ps][pb], alpha);
r_re[ts][pb][0] = (FLOAT32)cos(t);
r_im[ts][pb][0] = (FLOAT32)sin(t);
t = ixheaacd_mps_angle_interpolation(pr[ps - 1][pb], pr[ps][pb], alpha);
r_re[ts][pb][1] = (FLOAT32)cos(t);
r_im[ts][pb][1] = (FLOAT32)sin(t);
ts++;
if (ts > 71) {
ts = 0;
break;
}
if (pb > 27) {
pb = 0;
break;
}
}
}
}
}
VOID ixheaacd_mps_init_pre_and_post_matrix(ia_mps_dec_state_struct *self) {
memset(self->m1_param_re_prev, 0,
MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT * sizeof(WORD32));
memset(self->m1_param_im_prev, 0,
MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT * sizeof(WORD32));
memset(self->m1_param_re_prev, 0,
MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT * sizeof(WORD32));
memset(self->m2_decor_re_prev, 0,
MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT * sizeof(WORD32));
memset(self->m2_resid_re_prev, 0,
MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT * sizeof(WORD32));
memset(self->m2_resid_im_prev, 0,
MAX_PARAMETER_BANDS * MAX_M_OUTPUT * MAX_M_INPUT * sizeof(WORD32));
}