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android13/external/libxaac/decoder/ixheaacd_ps_dec.c

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/******************************************************************************
* *
* 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 <string.h>
#include "ixheaacd_sbr_common.h"
#include "ixheaacd_type_def.h"
#include "ixheaacd_constants.h"
#include "ixheaacd_basic_ops32.h"
#include "ixheaacd_basic_ops16.h"
#include "ixheaacd_basic_ops40.h"
#include "ixheaacd_basic_ops_arr.h"
#include "ixheaacd_basic_ops.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_basic_op.h"
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_common_rom.h"
#include "ixheaacd_basic_funcs.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_pns.h"
#include "ixheaacd_aac_rom.h"
#include "ixheaacd_pulsedata.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_lt_predict.h"
#include "ixheaacd_channelinfo.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_sbr_scale.h"
#include "ixheaacd_lpp_tran.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_sbr_rom.h"
#include "ixheaacd_hybrid.h"
#include "ixheaacd_ps_dec.h"
#include "ixheaacd_env_extr.h"
#include "ixheaacd_ps_dec.h"
#include "ixheaacd_qmf_dec.h"
#include "ixheaacd_env_calc.h"
#include "ixheaacd_sbr_const.h"
#include "ixheaacd_pvc_dec.h"
#include "ixheaacd_sbr_dec.h"
#include "ixheaacd_function_selector.h"
static PLATFORM_INLINE WORD16 ixheaacd_shl16_saturate(WORD16 op1,
WORD16 shift) {
WORD16 var_out;
WORD32 temp;
temp = (WORD32)(op1 << shift);
var_out = ixheaacd_sat16(temp);
return (var_out);
}
static PLATFORM_INLINE VOID ixheaacd_shl16_arr_saturate(WORD16 *word16_arr,
WORD16 shift, WORD n) {
WORD i;
for (i = n - 1; i >= 0; i--) {
*word16_arr = ixheaacd_shl16_saturate(*word16_arr, shift);
word16_arr++;
}
return;
}
VOID ixheaacd_scale_short_vec_left(WORD16 *word16_arr, WORD32 n, WORD16 shift) {
ixheaacd_shl16_arr_saturate(word16_arr, shift, n);
}
VOID ixheaacd_scale_int_vec_left(WORD32 *word32_arr, WORD32 n, WORD16 shift) {
ixheaacd_shl32_arr_sat(word32_arr, shift, n);
}
VOID ixheaacd_scale_int_vec_right(WORD32 *word32_arr, WORD32 n, WORD16 shift) {
ixheaacd_shr32_arr(word32_arr, shift, n);
}
VOID ixheaacd_scale_short_vec_right(WORD16 *word16_arr, WORD32 n,
WORD16 shift) {
ixheaacd_shr16_arr(word16_arr, shift, n);
}
WORD32 ixheaacd_calc_max(WORD16 *array, WORD32 size) {
WORD n;
WORD32 max_val = 0;
WORD16 temp1, temp2;
for (n = size; n != 0; n--) {
temp1 = *array++;
temp2 = *array++;
max_val = max_val | ixheaacd_abs32_nrm(temp1);
max_val = max_val | ixheaacd_abs32_nrm(temp2);
}
return max_val;
}
static WORD ixheaacd_get_ps_scale(ia_ps_dec_struct *ptr_ps_dec) {
WORD i, m, n, len;
WORD32 max_val = 0;
WORD16 *ptr_re;
WORD32 *ptr_re_temp, *ptr_im;
for (m = 0; m < 2; m++) {
ptr_re = &ptr_ps_dec->delay_buf_qmf_ap_re_im[m][2 * 3];
max_val |=
ixheaacd_calc_max(ptr_re, NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS);
}
ptr_re = (WORD16 *)ptr_ps_dec->delay_buf_qmf_ld_re_im;
max_val |= ixheaacd_calc_max(ptr_re, HIGH_DEL * SMALL_DEL_STRT);
ptr_re = (WORD16 *)ptr_ps_dec->delay_buf_qmf_sd_re_im;
max_val |= ixheaacd_calc_max(
ptr_re, (SMALL_DEL *
(NUM_OF_QUAD_MIRROR_FILTER_ICC_CHNLS -
(NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS + SMALL_DEL_STRT))));
ptr_re = (WORD16 *)ptr_ps_dec->delay_buf_qmf_sub_re_im;
max_val |= ixheaacd_calc_max(ptr_re, 16 * DEL_ALL_PASS);
for (i = 0; i < NUM_SER_AP_LINKS; i++) {
for (m = 0; m < ptr_ps_dec->delay_sample_ser[i]; m++) {
ptr_re = &ptr_ps_dec->delay_buf_qmf_ser_re_im[m][i][2 * 3];
max_val |=
ixheaacd_calc_max(ptr_re, NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS);
}
}
ptr_re = (WORD16 *)ptr_ps_dec->delay_buf_qmf_sub_ser_re_im;
max_val |= ixheaacd_calc_max(ptr_re, NUM_SER_AP_LINKS * 5 * 16);
max_val = max_val << 16;
len = ptr_ps_dec->str_hybrid.ptr_qmf_buf;
for (i = 0; i < NO_QMF_CHANNELS_IN_HYBRID; i++) {
ptr_re_temp = &ptr_ps_dec->str_hybrid.ptr_qmf_buf_re[i][0];
ptr_im = &ptr_ps_dec->str_hybrid.ptr_qmf_buf_im[i][0];
for (n = len; n != 0; n--) {
WORD32 temp3 = *ptr_re_temp++;
WORD32 temp4 = *ptr_im++;
max_val = max_val | ixheaacd_abs32_nrm(temp3);
max_val = max_val | ixheaacd_abs32_nrm(temp4);
}
}
return ixheaacd_pnorm32(max_val);
}
VOID ixheaacd_init_ps_scale(ia_ps_dec_struct *ptr_ps_dec,
ia_sbr_scale_fact_struct *sbr_scale_factor)
{
WORD32 reserve, change;
WORD16 temp;
reserve = ixheaacd_get_ps_scale(ptr_ps_dec);
ptr_ps_dec->delay_buffer_scale = (ptr_ps_dec->delay_buffer_scale + reserve);
temp =
ixheaacd_min16(sbr_scale_factor->lb_scale, sbr_scale_factor->ov_lb_scale);
temp = ixheaacd_min16(temp, sbr_scale_factor->hb_scale);
temp = ixheaacd_min16(temp, ptr_ps_dec->delay_buffer_scale);
sbr_scale_factor->ps_scale = (temp - 1);
change = (sbr_scale_factor->ps_scale - ptr_ps_dec->delay_buffer_scale);
change = (change + reserve);
ixheaacd_scale_ps_states(ptr_ps_dec, (WORD16)change);
ptr_ps_dec->delay_buffer_scale = sbr_scale_factor->ps_scale;
}
WORD32 ixheaacd_divide16_pos_dec(WORD32 op1, WORD32 op2) {
UWORD32 v;
UWORD32 u;
WORD k, nrm;
nrm = ixheaacd_norm32(op2);
u = (op1 << nrm);
v = (op2 << nrm);
u = (u & 0xffff0000);
v = (v & 0xffff0000);
if (u != 0) {
for (k = 16; k > 0; k--) {
if (u >= (UWORD32)v) {
u = ((u - v) << 1) + 1;
} else {
u = (u << 1);
}
}
}
return (u);
}
VOID ixheaacd_decorr_filter1_dec(ia_ps_dec_struct *ptr_ps_dec,
ia_ps_tables_struct *ps_tables_ptr,
WORD16 *transient_ratio) {
WORD sb;
WORD m;
WORD16 delay_buf_idx;
WORD16 *p_delay_buf_sub_re_im;
WORD16 *p_frac_delay_phase_fac_ser_re_im, *p_frac_delay_phase_fac_ser_re_im1;
const WORD16 *p_frac_delay_phase_fac_re_im;
REVERB_BUFFERS_CH_RI *p_delay_buf_ser_sub_re_im;
WORD32 *p_left_real;
WORD32 *p_left_imag;
WORD32 *p_right_real;
WORD32 *p_right_imag;
p_frac_delay_phase_fac_re_im =
&ps_tables_ptr->frac_delay_phase_fac_qmf_sub_re_im[0];
p_delay_buf_ser_sub_re_im = &ptr_ps_dec->delay_buf_qmf_sub_ser_re_im;
p_frac_delay_phase_fac_ser_re_im =
&ps_tables_ptr->frac_delay_phase_fac_qmf_sub_ser_re_im[0][0];
p_left_real = ptr_ps_dec->ptr_hyb_left_re;
p_left_imag = ptr_ps_dec->ptr_hyb_left_im;
p_right_real = ptr_ps_dec->ptr_hyb_right_re;
p_right_imag = ptr_ps_dec->ptr_hyb_right_im;
delay_buf_idx = ptr_ps_dec->delay_buf_idx;
p_delay_buf_sub_re_im =
&ptr_ps_dec->delay_buf_qmf_sub_re_im[delay_buf_idx][0];
for (sb = 0; sb < SUBQMF_GROUPS; sb++) {
WORD16 real_tmp, imag_tmp, real_tmp0, imag_tmp0, real_in, imag_in, bin;
real_tmp0 = p_delay_buf_sub_re_im[0];
imag_tmp0 = p_delay_buf_sub_re_im[1];
real_in = (WORD16)(
ixheaacd_sub32_sat(
ixheaacd_mult16x16in32(real_tmp0, p_frac_delay_phase_fac_re_im[0]),
ixheaacd_mult16x16in32(imag_tmp0,
p_frac_delay_phase_fac_re_im[1])) >>
15);
imag_in = (WORD16)(
ixheaacd_add32_sat(
ixheaacd_mult16x16in32(real_tmp0, p_frac_delay_phase_fac_re_im[1]),
ixheaacd_mult16x16in32(imag_tmp0,
p_frac_delay_phase_fac_re_im[0])) >>
15);
*p_delay_buf_sub_re_im++ = ixheaacd_round16(p_left_real[sb]);
*p_delay_buf_sub_re_im++ = ixheaacd_round16(p_left_imag[sb]);
p_frac_delay_phase_fac_re_im += 2;
p_frac_delay_phase_fac_ser_re_im1 = p_frac_delay_phase_fac_ser_re_im;
p_frac_delay_phase_fac_ser_re_im += 2;
for (m = 0; m < NUM_SER_AP_LINKS; m++) {
WORD16 decay;
WORD16 delay_buf_idx_ser;
delay_buf_idx_ser = ptr_ps_dec->delay_buf_idx_ser[m];
real_tmp0 = (*p_delay_buf_ser_sub_re_im)[delay_buf_idx_ser][m][2 * sb];
imag_tmp0 =
(*p_delay_buf_ser_sub_re_im)[delay_buf_idx_ser][m][2 * sb + 1];
real_tmp =
(WORD16)(ixheaacd_sub32_sat(
ixheaacd_mult16x16in32(
real_tmp0, p_frac_delay_phase_fac_ser_re_im1[0]),
ixheaacd_mult16x16in32(
imag_tmp0, p_frac_delay_phase_fac_ser_re_im1[1])) >>
15);
imag_tmp =
(WORD16)(ixheaacd_add32_sat(
ixheaacd_mult16x16in32(
real_tmp0, p_frac_delay_phase_fac_ser_re_im1[1]),
ixheaacd_mult16x16in32(
imag_tmp0, p_frac_delay_phase_fac_ser_re_im1[0])) >>
15);
decay = ps_tables_ptr->rev_link_decay_ser[m];
real_tmp = ixheaacd_sub16(real_tmp, ixheaacd_mult16_shl(real_in, decay));
imag_tmp = ixheaacd_sub16(imag_tmp, ixheaacd_mult16_shl(imag_in, decay));
(*p_delay_buf_ser_sub_re_im)[delay_buf_idx_ser][m][sb * 2] =
ixheaacd_add16(real_in, ixheaacd_mult16_shl(real_tmp, decay));
(*p_delay_buf_ser_sub_re_im)[delay_buf_idx_ser][m][sb * 2 + 1] =
ixheaacd_add16(imag_in, ixheaacd_mult16_shl(imag_tmp, decay));
real_in = real_tmp;
imag_in = imag_tmp;
p_frac_delay_phase_fac_ser_re_im1 += 32;
}
bin = ps_tables_ptr->hybrid_to_bin[sb];
p_right_real[sb] =
ixheaacd_mult16x16in32_shl(real_in, transient_ratio[bin]);
p_right_imag[sb] =
ixheaacd_mult16x16in32_shl(imag_in, transient_ratio[bin]);
}
}
VOID ixheaacd_decorr_filter2_dec(
ia_ps_dec_struct *ptr_ps_dec, WORD32 *p_buf_left_real,
WORD32 *p_buf_left_imag, WORD32 *p_buf_right_real, WORD32 *p_buf_right_imag,
ia_ps_tables_struct *ps_tables_ptr, WORD16 *transient_ratio) {
WORD sb, di, sb_delay;
WORD m, bin;
WORD32 *p_left_real;
WORD32 *p_left_imag;
WORD32 *p_right_real;
WORD32 *p_right_imag;
WORD16 delay_buf_idx;
REVERB_BUFFERS_RI *p_delay_buf_ser_re_im;
WORD16 *p_delay_buf_ap_re_im;
const WORD16 *p_frac_delay_phase_fac_re_im;
WORD16 *p_frac_delay_phase_fac_ser_ap_re_im,
*p_frac_delay_phase_fac_ser_ap_re_im_temp;
p_left_real = p_buf_left_real;
p_left_imag = p_buf_left_imag;
p_right_real = p_buf_right_real;
p_right_imag = p_buf_right_imag;
p_delay_buf_ser_re_im = &ptr_ps_dec->delay_buf_qmf_ser_re_im;
p_frac_delay_phase_fac_re_im = ps_tables_ptr->frac_delay_phase_fac_qmf_re_im;
p_frac_delay_phase_fac_ser_ap_re_im =
&ps_tables_ptr->frac_delay_phase_fac_qmf_ser_re_im[0][0];
delay_buf_idx = ptr_ps_dec->delay_buf_idx;
p_delay_buf_ap_re_im = &ptr_ps_dec->delay_buf_qmf_ap_re_im[delay_buf_idx][0];
p_frac_delay_phase_fac_re_im += 6;
p_frac_delay_phase_fac_ser_ap_re_im += 6;
p_delay_buf_ap_re_im += 6;
for (sb = 3, di = 9; sb < 23; sb++) {
WORD16 real_tmp, imag_tmp, real_tmp0, imag_tmp0, real_in, imag_in;
sb_delay = sb;
real_tmp0 = p_delay_buf_ap_re_im[0];
imag_tmp0 = p_delay_buf_ap_re_im[1];
real_in = (WORD16)(
ixheaacd_sub32_sat(
ixheaacd_mult16x16in32(real_tmp0, p_frac_delay_phase_fac_re_im[0]),
ixheaacd_mult16x16in32(imag_tmp0,
p_frac_delay_phase_fac_re_im[1])) >>
15);
imag_in = (WORD16)(
ixheaacd_add32_sat(
ixheaacd_mult16x16in32(real_tmp0, p_frac_delay_phase_fac_re_im[1]),
ixheaacd_mult16x16in32(imag_tmp0,
p_frac_delay_phase_fac_re_im[0])) >>
15);
*p_delay_buf_ap_re_im++ = ixheaacd_round16(p_left_real[sb]);
*p_delay_buf_ap_re_im++ = ixheaacd_round16(p_left_imag[sb]);
p_frac_delay_phase_fac_re_im += 2;
p_frac_delay_phase_fac_ser_ap_re_im_temp =
p_frac_delay_phase_fac_ser_ap_re_im;
p_frac_delay_phase_fac_ser_ap_re_im += 2;
for (m = 0; m < NUM_SER_AP_LINKS; m++, di++) {
WORD16 decay;
WORD16 delay_buf_idx_ser;
delay_buf_idx_ser = ptr_ps_dec->delay_buf_idx_ser[m];
real_tmp0 = (*p_delay_buf_ser_re_im)[delay_buf_idx_ser][m][sb_delay * 2];
imag_tmp0 =
(*p_delay_buf_ser_re_im)[delay_buf_idx_ser][m][sb_delay * 2 + 1];
real_tmp = (WORD16)(
ixheaacd_sub32_sat(
ixheaacd_mult16x16in32(
real_tmp0, p_frac_delay_phase_fac_ser_ap_re_im_temp[0]),
ixheaacd_mult16x16in32(
imag_tmp0, p_frac_delay_phase_fac_ser_ap_re_im_temp[1])) >>
15);
imag_tmp = (WORD16)(
ixheaacd_add32_sat(
ixheaacd_mult16x16in32(
real_tmp0, p_frac_delay_phase_fac_ser_ap_re_im_temp[1]),
ixheaacd_mult16x16in32(
imag_tmp0, p_frac_delay_phase_fac_ser_ap_re_im_temp[0])) >>
15);
decay = ps_tables_ptr->decay_scale_factor[di];
real_tmp = ixheaacd_sub16(real_tmp, ixheaacd_mult16_shl(real_in, decay));
imag_tmp = ixheaacd_sub16(imag_tmp, ixheaacd_mult16_shl(imag_in, decay));
(*p_delay_buf_ser_re_im)[delay_buf_idx_ser][m][sb_delay * 2] =
ixheaacd_add16(real_in, ixheaacd_mult16_shl(real_tmp, decay));
(*p_delay_buf_ser_re_im)[delay_buf_idx_ser][m][sb_delay * 2 + 1] =
ixheaacd_add16(imag_in, ixheaacd_mult16_shl(imag_tmp, decay));
real_in = real_tmp;
imag_in = imag_tmp;
p_frac_delay_phase_fac_ser_ap_re_im_temp += 64;
}
bin = ps_tables_ptr->delay_to_bin[sb_delay];
p_right_real[sb] =
ixheaacd_mult16x16in32_shl(real_in, transient_ratio[bin]);
p_right_imag[sb] =
ixheaacd_mult16x16in32_shl(imag_in, transient_ratio[bin]);
}
}
VOID ixheaacd_decorrelation_dec(ia_ps_dec_struct *ptr_ps_dec,
WORD32 *p_buf_left_real,
WORD32 *p_buf_left_imag,
WORD32 *p_buf_right_real,
WORD32 *p_buf_right_imag,
ia_ps_tables_struct *ps_tables_ptr) {
WORD sb;
WORD gr, bin, sband, maxsband;
WORD32 peak_diff, nrg;
WORD32 power_buf[NUM_OF_BINS];
WORD16 transient_ratio[NUM_OF_BINS + 1];
WORD32 *p_left_real;
WORD32 *p_left_imag;
WORD32 *p_right_real;
WORD32 *p_right_imag;
WORD16 *p_delay_buf_re_im_ld;
WORD16 *p_delay_buf_re_im_sd;
WORD usb = ptr_ps_dec->usb;
WORD16 delay_buf_idx;
p_left_real = ptr_ps_dec->ptr_hyb_left_re;
p_left_imag = ptr_ps_dec->ptr_hyb_left_im;
p_right_real = ptr_ps_dec->ptr_hyb_right_re;
p_right_imag = ptr_ps_dec->ptr_hyb_right_im;
{
WORD32 re0, im0, re1, im1;
re0 = (p_left_real[0]);
im0 = (p_left_imag[0]);
re1 = (p_left_real[5]);
im1 = (p_left_imag[5]);
power_buf[0] = ixheaacd_mult32x16in32(re0, (WORD16)(re0 >> 16));
power_buf[0] = ixheaacd_add32_sat(
power_buf[0], ixheaacd_mult32x16in32(im0, (WORD16)(im0 >> 16)));
power_buf[0] = ixheaacd_add32_sat(
power_buf[0], ixheaacd_mult32x16in32(re1, (WORD16)(re1 >> 16)));
power_buf[0] = ixheaacd_add32_sat(
power_buf[0], ixheaacd_mult32x16in32(im1, (WORD16)(im1 >> 16)));
re0 = (p_left_real[4]);
im0 = (p_left_imag[4]);
re1 = (p_left_real[1]);
im1 = (p_left_imag[1]);
power_buf[1] = ixheaacd_mult32x16in32(re0, (WORD16)(re0 >> 16));
power_buf[1] = ixheaacd_add32_sat(
power_buf[1], ixheaacd_mult32x16in32(im0, (WORD16)(im0 >> 16)));
power_buf[1] = ixheaacd_add32_sat(
power_buf[1], ixheaacd_mult32x16in32(re1, (WORD16)(re1 >> 16)));
power_buf[1] = ixheaacd_add32_sat(
power_buf[1], ixheaacd_mult32x16in32(im1, (WORD16)(im1 >> 16)));
}
bin = 4 - 2;
for (gr = 4; gr < SUBQMF_GROUPS; gr++) {
WORD32 re, im;
sb = ps_tables_ptr->borders_group[gr];
re = (p_left_real[sb]);
im = (p_left_imag[sb]);
power_buf[bin] = ixheaacd_mult32x16in32(re, (WORD16)(re >> 16));
power_buf[bin] = ixheaacd_add32_sat(
power_buf[bin], ixheaacd_mult32x16in32(im, (WORD16)(im >> 16)));
bin++;
}
p_left_real = p_buf_left_real;
p_left_imag = p_buf_left_imag;
bin = NO_QMF_CHANNELS_IN_HYBRID + 5;
for (sband = NO_QMF_CHANNELS_IN_HYBRID; sband < NO_QMF_CHANNELS_IN_HYBRID + 6;
sband++) {
WORD32 re = (p_left_real[sband]);
WORD32 im = (p_left_imag[sband]);
power_buf[bin] = ixheaacd_mult32x16in32(re, (WORD16)(re >> 16));
power_buf[bin] = ixheaacd_add32_sat(
power_buf[bin], ixheaacd_mult32x16in32(im, (WORD16)(im >> 16)));
bin++;
}
bin = 16 - 2;
for (gr = 16; gr < NO_IID_GROUPS; gr++) {
WORD32 accu = 0, tmp;
WORD32 re, im;
maxsband = ixheaacd_min32(usb, ps_tables_ptr->borders_group[gr + 1]);
for (sband = ps_tables_ptr->borders_group[gr]; sband < maxsband; sband++) {
re = (p_left_real[sband]);
im = (p_left_imag[sband]);
tmp = ixheaacd_mult32x16in32(re, (WORD16)(re >> 16));
tmp = ixheaacd_add32_sat(tmp,
ixheaacd_mult32x16in32(im, (WORD16)(im >> 16)));
tmp = (tmp >> ps_tables_ptr->group_shift[gr - (SUBQMF_GROUPS + 6)]);
accu = ixheaacd_add32_sat(accu, tmp);
}
power_buf[bin] = accu;
bin++;
}
p_left_real = ptr_ps_dec->ptr_hyb_left_re;
p_left_imag = ptr_ps_dec->ptr_hyb_left_im;
for (bin = 0; bin < NUM_OF_BINS; bin++) {
power_buf[bin] = ixheaacd_shl32(power_buf[bin], 1);
power_buf[bin] = ixheaacd_max32(0, power_buf[bin]);
ptr_ps_dec->peak_decay_diff[bin] = ixheaacd_mult32x16in32_shl(
ptr_ps_dec->peak_decay_diff[bin], PEAK_DECAYING_FACT);
ptr_ps_dec->peak_decay_diff[bin] =
ixheaacd_max32(ptr_ps_dec->peak_decay_diff[bin], power_buf[bin]);
peak_diff = ixheaacd_add32_sat(
ixheaacd_mult32x16in32_shl(ptr_ps_dec->peak_decay_diff_prev[bin],
0x6000),
((ixheaacd_sub32_sat(ptr_ps_dec->peak_decay_diff[bin],
power_buf[bin]) >>
2)));
ptr_ps_dec->peak_decay_diff_prev[bin] = peak_diff;
nrg = ixheaacd_add32_sat(
ixheaacd_mult32x16in32_shl(ptr_ps_dec->energy_prev[bin], 0x6000),
(power_buf[bin] >> 2));
ptr_ps_dec->energy_prev[bin] = nrg;
peak_diff = ixheaacd_add32_sat(peak_diff, (peak_diff >> 1));
if (peak_diff <= nrg) {
transient_ratio[bin] = 0x7fff;
} else {
transient_ratio[bin] =
ixheaacd_extract16l((*ixheaacd_divide16_pos)(nrg, peak_diff));
}
}
(*ixheaacd_decorr_filter1)(ptr_ps_dec, ps_tables_ptr, transient_ratio);
transient_ratio[20] = 0;
(*ixheaacd_decorr_filter2)(ptr_ps_dec, p_buf_left_real, p_buf_left_imag,
p_buf_right_real, p_buf_right_imag, ps_tables_ptr,
transient_ratio);
{
WORD16 trans_ratio = transient_ratio[18];
p_left_real = p_buf_left_real;
p_left_imag = p_buf_left_imag;
p_right_real = p_buf_right_real;
p_right_imag = p_buf_right_imag;
maxsband = ixheaacd_min32((WORD16)usb, ps_tables_ptr->borders_group[21]);
delay_buf_idx = ptr_ps_dec->delay_buf_idx_long;
p_delay_buf_re_im_ld =
&ptr_ps_dec->delay_buf_qmf_ld_re_im[delay_buf_idx][0];
for (sband = ps_tables_ptr->borders_group[20]; sband < maxsband; sband++) {
WORD16 real_in, imag_in;
real_in = p_delay_buf_re_im_ld[0];
imag_in = p_delay_buf_re_im_ld[1];
*p_delay_buf_re_im_ld++ = ixheaacd_round16(p_left_real[sband]);
*p_delay_buf_re_im_ld++ = ixheaacd_round16(p_left_imag[sband]);
p_right_real[sband] = ixheaacd_mult16x16in32_shl(real_in, trans_ratio);
p_right_imag[sband] = ixheaacd_mult16x16in32_shl(imag_in, trans_ratio);
}
ptr_ps_dec->delay_buf_idx_long =
ixheaacd_add16(ptr_ps_dec->delay_buf_idx_long, 1);
if (ptr_ps_dec->delay_buf_idx_long >= 14) {
ptr_ps_dec->delay_buf_idx_long = 0;
}
p_delay_buf_re_im_sd = &ptr_ps_dec->delay_buf_qmf_sd_re_im[0][0];
trans_ratio = transient_ratio[19];
maxsband = ixheaacd_min32((WORD16)usb, ps_tables_ptr->borders_group[22]);
for (sband = ps_tables_ptr->borders_group[21]; sband < maxsband; sband++) {
WORD16 real_in, imag_in;
real_in = p_delay_buf_re_im_sd[0];
imag_in = p_delay_buf_re_im_sd[1];
*p_delay_buf_re_im_sd++ = ixheaacd_round16(p_left_real[sband]);
*p_delay_buf_re_im_sd++ = ixheaacd_round16(p_left_imag[sband]);
p_right_real[sband] = ixheaacd_mult16x16in32_shl(real_in, trans_ratio);
p_right_imag[sband] = ixheaacd_mult16x16in32_shl(imag_in, trans_ratio);
}
}
for (sband = usb; sband < NO_SYNTHESIS_CHANNELS; sband++) {
p_right_real[sband] = 0;
p_right_imag[sband] = 0;
}
ptr_ps_dec->delay_buf_idx = (WORD16)(ptr_ps_dec->delay_buf_idx + 1);
if (ptr_ps_dec->delay_buf_idx >= DEL_ALL_PASS) {
ptr_ps_dec->delay_buf_idx = 0;
}
{
WORD delay_m;
for (delay_m = 0; delay_m < NUM_SER_AP_LINKS; delay_m++) {
ptr_ps_dec->delay_buf_idx_ser[delay_m] =
(ptr_ps_dec->delay_buf_idx_ser[delay_m] + 1);
if (ptr_ps_dec->delay_buf_idx_ser[delay_m] >=
ptr_ps_dec->delay_sample_ser[delay_m]) {
ptr_ps_dec->delay_buf_idx_ser[delay_m] = 0;
}
}
}
}
static WORD16 ixheaacd_cos512(WORD phi_by_4, const WORD16 *cos_sin_lookup_tab) {
WORD index;
index = ixheaacd_round16(ixheaacd_abs32_sat(phi_by_4));
index = (index & 0x3FF);
if (index < 512) {
return cos_sin_lookup_tab[512 - index];
} else {
return (WORD16)(-(cos_sin_lookup_tab[index - 512]));
}
}
static WORD16 ixheaacd_sin512(WORD phi_by_4, const WORD16 *cos_sin_lookup_tab) {
WORD index;
index = ixheaacd_round16(phi_by_4);
if (index < 0) {
index = (-(index)&0x3FF);
if (index < 512) {
return (WORD16)(-cos_sin_lookup_tab[index]);
} else {
return (WORD16)(-cos_sin_lookup_tab[1024 - index]);
}
} else {
index = (index & 0x3FF);
if (index < 512) {
return cos_sin_lookup_tab[index];
} else {
return cos_sin_lookup_tab[1024 - index];
}
}
}
VOID ixheaacd_init_rot_env(ia_ps_dec_struct *ptr_ps_dec, WORD16 env, WORD16 usb,
ia_sbr_tables_struct *sbr_tables_ptr,
const WORD16 *cos_sin_lookup_tab) {
WORD group, bin, num_iid_steps;
WORD16 c2, c1;
WORD32 alpha, beta;
WORD16 h11, h12, h21, h22;
WORD16 inv_env_len;
const WORD16 *p_scale_factors;
WORD16 *p_iid_idx;
WORD indexplusa, indexminusa;
const WORD32 rescale = (0x0517cc1b << 1);
if (env == 0) {
WORD usb_prev = ptr_ps_dec->usb;
WORD16 *ptr_tmp;
ptr_ps_dec->usb = usb;
if ((usb > usb_prev) && usb_prev) {
WORD i, j, delay, offset1;
WORD ixheaacd_drc_offset =
(usb < NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS
? usb
: NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS);
if (ixheaacd_drc_offset > usb_prev) {
for (i = 0; i < NUM_SER_AP_LINKS; i++) {
for (j = 0; j < ptr_ps_dec->delay_sample_ser[i]; j++) {
ptr_tmp = &ptr_ps_dec->delay_buf_qmf_ser_re_im[j][i][usb_prev * 2];
memset(ptr_tmp, 0,
sizeof(WORD16) * (ixheaacd_drc_offset - usb_prev) * 2);
}
}
}
offset1 =
(usb < (NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS + SMALL_DEL_STRT)
? usb
: (NUM_OF_QUAD_MIRROR_FILTER_ALL_PASS_CHNLS + SMALL_DEL_STRT));
delay = HIGH_DEL;
if ((offset1 >= ixheaacd_drc_offset) && (offset1 <= SMALL_DEL_STRT)) {
for (i = 0; i < delay; i++) {
ptr_tmp =
&ptr_ps_dec->delay_buf_qmf_ld_re_im[i][ixheaacd_drc_offset * 2];
memset(ptr_tmp, 0,
sizeof(WORD16) * 2 * (offset1 - ixheaacd_drc_offset));
}
}
delay = SMALL_DEL;
if ((usb >= offset1) && (usb <= 16)) {
for (i = 0; i < delay; i++) {
ptr_tmp = &ptr_ps_dec->delay_buf_qmf_sd_re_im[i][offset1 * 2];
memset(ptr_tmp, 0, sizeof(WORD16) * 2 * (usb - offset1));
}
}
}
}
if (ptr_ps_dec->iid_quant) {
num_iid_steps = NUM_IID_LEVELS_FINE;
p_scale_factors = sbr_tables_ptr->ps_tables_ptr->scale_factors_fine;
} else {
num_iid_steps = NUM_IID_LEVELS;
p_scale_factors = sbr_tables_ptr->ps_tables_ptr->scale_factors;
}
inv_env_len =
sbr_tables_ptr->env_calc_tables_ptr->sbr_inv_int_table[ixheaacd_abs16(
ixheaacd_sub16_sat(ptr_ps_dec->border_position[env + 1],
ptr_ps_dec->border_position[env]))];
p_iid_idx = &ptr_ps_dec->iid_par_table[env][0];
for (group = 0; group < NO_IID_GROUPS; group++) {
WORD16 bplusa, bminusa;
WORD num_iid_idx, num_icc_idx;
bin = sbr_tables_ptr->ps_tables_ptr->group_to_bin[group];
num_iid_idx = p_iid_idx[bin];
num_icc_idx = p_iid_idx[bin + 238];
c1 = p_scale_factors[(num_iid_steps + num_iid_idx)];
c2 = p_scale_factors[(num_iid_steps - num_iid_idx)];
beta = ixheaacd_mult32x16in32_shl(
ixheaacd_mult16x16in32_shl(
sbr_tables_ptr->ps_tables_ptr->alpha_values[num_icc_idx],
ixheaacd_sub16(c1, c2)),
PSC_SQRT05F);
alpha = ixheaacd_shr32_dir_sat_limit(
ixheaacd_deposit16h_in32(
sbr_tables_ptr->ps_tables_ptr->alpha_values[num_icc_idx]),
1);
bplusa = ixheaacd_round16(ixheaacd_add32_sat(beta, alpha));
bminusa = ixheaacd_round16(ixheaacd_sub32_sat(beta, alpha));
indexplusa = ixheaacd_mult32x16in32(rescale, bplusa);
indexminusa = ixheaacd_mult32x16in32(rescale, bminusa);
h11 = ixheaacd_mult16_shl(ixheaacd_cos512(indexplusa, cos_sin_lookup_tab),
c2);
h12 = ixheaacd_mult16_shl(ixheaacd_cos512(indexminusa, cos_sin_lookup_tab),
c1);
h21 = ixheaacd_mult16_shl(ixheaacd_sin512(indexplusa, cos_sin_lookup_tab),
c2);
h22 = ixheaacd_mult16_shl(ixheaacd_sin512(indexminusa, cos_sin_lookup_tab),
c1);
ptr_ps_dec->delta_h11_h12[2 * group + 0] = ixheaacd_mult16_shl(
inv_env_len,
ixheaacd_sub16(h11, ptr_ps_dec->h11_h12_vec[2 * group + 0]));
ptr_ps_dec->delta_h11_h12[2 * group + 1] = ixheaacd_mult16_shl(
inv_env_len,
ixheaacd_sub16(h12, ptr_ps_dec->h11_h12_vec[2 * group + 1]));
ptr_ps_dec->delta_h21_h22[2 * group + 0] = ixheaacd_mult16_shl(
inv_env_len,
ixheaacd_sub16(h21, ptr_ps_dec->h21_h22_vec[2 * group + 0]));
ptr_ps_dec->delta_h21_h22[2 * group + 1] = ixheaacd_mult16_shl(
inv_env_len,
ixheaacd_sub16(h22, ptr_ps_dec->h21_h22_vec[2 * group + 1]));
ptr_ps_dec->H11_H12[2 * group + 0] = ptr_ps_dec->h11_h12_vec[2 * group + 0];
ptr_ps_dec->H11_H12[2 * group + 1] = ptr_ps_dec->h11_h12_vec[2 * group + 1];
ptr_ps_dec->H21_H22[2 * group + 0] = ptr_ps_dec->h21_h22_vec[2 * group + 0];
ptr_ps_dec->H21_H22[2 * group + 1] = ptr_ps_dec->h21_h22_vec[2 * group + 1];
ptr_ps_dec->h11_h12_vec[2 * group + 0] = h11;
ptr_ps_dec->h11_h12_vec[2 * group + 1] = h12;
ptr_ps_dec->h21_h22_vec[2 * group + 0] = h21;
ptr_ps_dec->h21_h22_vec[2 * group + 1] = h22;
}
}
VOID ixheaacd_apply_rot_dec(ia_ps_dec_struct *ptr_ps_dec, WORD32 *p_qmf_left_re,
WORD32 *p_qmf_left_im, WORD32 *p_qmf_right_re,
WORD32 *p_qmf_right_im,
ia_sbr_tables_struct *sbr_tables_ptr,
const WORD16 *ptr_res) {
WORD group, subband, max_subband, usb, k;
WORD32 *p_hyb_left_re, *p_hyb_left_re1;
WORD32 *p_hyb_left_im, *p_hyb_left_im1;
WORD32 *p_hyb_right_re, *p_hyb_right_re1;
WORD32 *p_hyb_right_im, *p_hyb_right_im1;
WORD32 temp_left_real, temp_left_imag;
WORD32 temp_right_real, temp_right_imag;
WORD16 hybrid_resol;
WORD32 tmp_real, tmp_img;
WORD32 tmp_real1, tmp_img1;
WORD32 loopcnt;
WORD16 H11_H12[128 * 2];
usb = ptr_ps_dec->usb;
p_hyb_left_re1 = ptr_ps_dec->ptr_hyb_left_re;
p_hyb_left_im1 = ptr_ps_dec->ptr_hyb_left_im;
p_hyb_right_re1 = ptr_ps_dec->ptr_hyb_right_re;
p_hyb_right_im1 = ptr_ps_dec->ptr_hyb_right_im;
for (group = 0; group < NO_IID_GROUPS; group++) {
ptr_ps_dec->H11_H12[2 * group + 0] =
ixheaacd_add16(ptr_ps_dec->H11_H12[2 * group + 0],
ptr_ps_dec->delta_h11_h12[2 * group + 0]);
ptr_ps_dec->H11_H12[2 * group + 1] =
ixheaacd_add16(ptr_ps_dec->H11_H12[2 * group + 1],
ptr_ps_dec->delta_h11_h12[2 * group + 1]);
ptr_ps_dec->H21_H22[2 * group + 0] =
ixheaacd_add16(ptr_ps_dec->H21_H22[2 * group + 0],
ptr_ps_dec->delta_h21_h22[2 * group + 0]);
ptr_ps_dec->H21_H22[2 * group + 1] =
ixheaacd_add16(ptr_ps_dec->H21_H22[2 * group + 1],
ptr_ps_dec->delta_h21_h22[2 * group + 1]);
}
for (subband = 0; subband < SUBQMF_GROUPS; subband++) {
temp_left_real = ixheaacd_add32_sat(
ixheaacd_mult32x16in32(p_hyb_left_re1[subband],
ptr_ps_dec->H11_H12[2 * subband + 0]),
ixheaacd_mult32x16in32(p_hyb_right_re1[subband],
ptr_ps_dec->H21_H22[2 * subband + 0]));
temp_left_imag = ixheaacd_add32_sat(
ixheaacd_mult32x16in32(p_hyb_left_im1[subband],
ptr_ps_dec->H11_H12[2 * subband + 0]),
ixheaacd_mult32x16in32(p_hyb_right_im1[subband],
ptr_ps_dec->H21_H22[2 * subband + 0]));
temp_right_real = ixheaacd_add32_sat(
ixheaacd_mult32x16in32(p_hyb_left_re1[subband],
ptr_ps_dec->H11_H12[2 * subband + 1]),
ixheaacd_mult32x16in32(p_hyb_right_re1[subband],
ptr_ps_dec->H21_H22[2 * subband + 1]));
temp_right_imag = ixheaacd_add32_sat(
ixheaacd_mult32x16in32(p_hyb_left_im1[subband],
ptr_ps_dec->H11_H12[2 * subband + 1]),
ixheaacd_mult32x16in32(p_hyb_right_im1[subband],
ptr_ps_dec->H21_H22[2 * subband + 1]));
p_hyb_left_re1[subband] = ixheaacd_shl32(temp_left_real, 2);
p_hyb_left_im1[subband] = ixheaacd_shl32(temp_left_imag, 2);
p_hyb_right_re1[subband] = ixheaacd_shl32(temp_right_real, 2);
p_hyb_right_im1[subband] = ixheaacd_shl32(temp_right_imag, 2);
}
p_hyb_left_re = p_qmf_left_re;
p_hyb_left_im = p_qmf_left_im;
p_hyb_right_re = p_qmf_right_re;
p_hyb_right_im = p_qmf_right_im;
{
WORD32 *h11_h12_src = (WORD32 *)ptr_ps_dec->H11_H12;
WORD32 *h21_h22_src = (WORD32 *)ptr_ps_dec->H21_H22;
WORD32 *h11_h12_dst = (WORD32 *)H11_H12;
for (group = SUBQMF_GROUPS; group < NO_IID_GROUPS; group++) {
max_subband = ixheaacd_min32(
usb, sbr_tables_ptr->ps_tables_ptr->borders_group[group + 1]);
for (subband = sbr_tables_ptr->ps_tables_ptr->borders_group[group];
subband < max_subband; subband++) {
h11_h12_dst[2 * subband] = h11_h12_src[group];
h11_h12_dst[2 * subband + 1] = h21_h22_src[group];
}
}
}
loopcnt = (usb + 15) >> 4;
for (subband = 0; subband < NO_QMF_CHANNELS_IN_HYBRID; subband++) {
tmp_real = *p_hyb_left_re1++;
tmp_img = *p_hyb_left_im1++;
tmp_real1 = *p_hyb_right_re1++;
tmp_img1 = *p_hyb_right_im1++;
hybrid_resol = ixheaacd_min16(*ptr_res++, 6);
for (k = hybrid_resol - 2; k >= 0; k--) {
tmp_real = ixheaacd_add32_sat(tmp_real, *p_hyb_left_re1++);
tmp_img = ixheaacd_add32_sat(tmp_img, *p_hyb_left_im1++);
tmp_real1 = ixheaacd_add32_sat(tmp_real1, *p_hyb_right_re1++);
tmp_img1 = ixheaacd_add32_sat(tmp_img1, *p_hyb_right_im1++);
}
p_hyb_left_re[subband] = tmp_real;
p_hyb_left_im[subband] = tmp_img;
p_hyb_right_re[subband] = tmp_real1;
p_hyb_right_im[subband] = tmp_img1;
}
for (; subband < usb; subband++) {
temp_left_real =
ixheaacd_add32_sat(ixheaacd_mult32x16in32(p_hyb_left_re[subband],
H11_H12[4 * subband + 0]),
ixheaacd_mult32x16in32(p_hyb_right_re[subband],
H11_H12[4 * subband + 2]));
temp_left_imag =
ixheaacd_add32_sat(ixheaacd_mult32x16in32(p_hyb_left_im[subband],
H11_H12[4 * subband + 0]),
ixheaacd_mult32x16in32(p_hyb_right_im[subband],
H11_H12[4 * subband + 2]));
temp_right_real =
ixheaacd_add32_sat(ixheaacd_mult32x16in32(p_hyb_left_re[subband],
H11_H12[4 * subband + 1]),
ixheaacd_mult32x16in32(p_hyb_right_re[subband],
H11_H12[4 * subband + 3]));
temp_right_imag =
ixheaacd_add32_sat(ixheaacd_mult32x16in32(p_hyb_left_im[subband],
H11_H12[4 * subband + 1]),
ixheaacd_mult32x16in32(p_hyb_right_im[subband],
H11_H12[4 * subband + 3]));
p_hyb_left_re[subband] = ixheaacd_shl32(temp_left_real, 2);
p_hyb_left_im[subband] = ixheaacd_shl32(temp_left_imag, 2);
p_hyb_right_re[subband] = ixheaacd_shl32(temp_right_real, 2);
p_hyb_right_im[subband] = ixheaacd_shl32(temp_right_imag, 2);
}
}
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