/******************************************************************************
* *
* 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ixheaacd_type_def.h>
#include "ixheaacd_cnst.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_interface.h"
#include "ixheaacd_acelp_info.h"
#include "ixheaacd_tns_usac.h"
#include "ixheaacd_acelp_info.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_info.h"
#include "ixheaacd_sbr_common.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_sbr_const.h"
#include "ixheaacd_main.h"
#include "ixheaacd_arith_dec.h"
#include "ixheaacd_tns_usac.h"
#include "ixheaacd_bit_extract.h"
#include "ixheaacd_constants.h"
#include <ixheaacd_type_def.h>
#include <ixheaacd_basic_ops32.h>
#include <ixheaacd_basic_ops40.h>
#include "ixheaacd_func_def.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_windows.h"
#include "ixheaacd_vec_baisc_ops.h"
#include "ixheaacd_config.h"
const WORD16 ixheaacd_mdst_fcoeff_long_sin[] = {0, 0, -16384, 0, 16384, 0, 0};
const WORD16 ixheaacd_mdst_fcoeff_long_kbd[] = {-2998, 0, -19052, 0,
19052, 0, 2998};
const WORD16 ixheaacd_mdst_fcoeff_long_sin_kbd[] = {-1499, -1876, -17718, 0,
17718, 1876, 1499};
const WORD16 ixheaacd_mdst_fcoeff_long_kbd_sin[] = {-1499, 1876, -17718, 0,
17718, -1876, 1499};
const WORD16 *ixheaacd_mdst_fcoeff_longshort_curr[2][2] = {
{ixheaacd_mdst_fcoeff_long_sin, ixheaacd_mdst_fcoeff_long_sin_kbd},
{ixheaacd_mdst_fcoeff_long_kbd_sin, ixheaacd_mdst_fcoeff_long_kbd}};
const WORD16 ixheaacd_mdst_fcoeff_start_sin[] = {-3364, -3401, -18584, 0,
18584, 3401, 3364};
const WORD16 ixheaacd_mdst_fcoeff_start_kbd[] = {-4932, -1572, -19942, 0,
19942, 1572, 4932};
const WORD16 ixheaacd_mdst_fcoeff_start_sin_kbd[] = {-3433, -3447, -18608, 0,
18608, 3447, 3433};
const WORD16 ixheaacd_mdst_fcoeff_start_kbd_sin[] = {-4863, -1525, -19918, 0,
19918, 1525, 4863};
const WORD16 *ixheaacd_mdst_fcoeff_start_curr[2][2] = {
{ixheaacd_mdst_fcoeff_start_sin, ixheaacd_mdst_fcoeff_start_sin_kbd},
{ixheaacd_mdst_fcoeff_start_kbd_sin, ixheaacd_mdst_fcoeff_start_kbd}};
const WORD16 ixheaacd_mdst_fcoeff_stop_sin[] = {-3364, 3401, -18584, 0,
18584, -3401, 3364};
const WORD16 ixheaacd_mdst_fcoeff_stop_kbd[] = {-4932, 1572, -19942, 0,
19942, -1572, 4932};
const WORD16 ixheaacd_mdst_fcoeff_stop_sin_kbd[] = {-4863, 1525, -19918, 0,
19918, -1525, 4863};
const WORD16 ixheaacd_mdst_fcoeff_stop_kbd_sin[] = {-3433, 3447, -18608, 0,
18608, -3447, 3433};
const WORD16 *ixheaacd_mdst_fcoeff_stop_cur[2][2] = {
{ixheaacd_mdst_fcoeff_stop_sin, ixheaacd_mdst_fcoeff_stop_sin_kbd},
{ixheaacd_mdst_fcoeff_stop_kbd_sin, ixheaacd_mdst_fcoeff_stop_kbd}};
const WORD16 ixheaacd_mdst_fcoeff_stopstart_sin[] = {-6728, 0, -20785, 0,
20785, 0, 6728};
const WORD16 ixheaacd_mdst_fcoeff_stopstart_kbd[] = {-6866, -0, -20831, 0,
20831, 0, 6866};
const WORD16 ixheaacd_mdst_fcoeff_stopstart_sin_kbd[] = {-6797, -46, -20808, 0,
20808, 46, 6797};
const WORD16 ixheaacd_mdst_fcoeff_stopstart_kbd_sin[] = {-6797, 46, -20808, 0,
20808, 46, 6797};
const WORD16 *ixheaacd_mdst_fcoeff_stopstart_cur[2][2] = {
{ixheaacd_mdst_fcoeff_stopstart_sin,
ixheaacd_mdst_fcoeff_stopstart_sin_kbd},
{ixheaacd_mdst_fcoeff_stopstart_kbd_sin,
ixheaacd_mdst_fcoeff_stopstart_kbd}};
const WORD16 ixheaacd_mdst_fcoeff_l_s_start_left_sin[] = {
-0, 3477, 8192, 10430, 8192, 3477, -0};
const WORD16 ixheaacd_mdst_fcoeff_l_s_start_left_kbd[] = {
1950, 4054, 6114, 6982, 6114, 4054, 1950};
const WORD16 ixheaacd_mdst_fcoeff_stop_stopstart_left_sin[] = {
1262, 1285, 1299, 1304, 1299, 1285, 1262};
const WORD16 ixheaacd_mdst_fcoeff_stop_stopstart_left_kbd[] = {
857, 866, 871, 873, 871, 866, 857};
const WORD16 *ixheaacd_mdst_fcoeff_l_s_start_left_prev[2] = {
ixheaacd_mdst_fcoeff_l_s_start_left_sin,
ixheaacd_mdst_fcoeff_l_s_start_left_kbd};
const WORD16 *ixheaacd_mdst_fcoeff_stop_stopstart_left_prev[2] = {
ixheaacd_mdst_fcoeff_stop_stopstart_left_sin,
ixheaacd_mdst_fcoeff_stop_stopstart_left_kbd};
#define ONE_BY_TWO_POW_14 0.00006103515625
#define ONE_BY_TWO_POW_15 0.000030517578125
void ixheaacd_usac_cplx_save_prev(ia_sfb_info_struct *info, WORD32 *l_spec,
WORD32 *r_spec, WORD32 *l_spec_prev,
WORD32 *r_spec_prev) {
WORD32 ixheaacd_drc_offset;
ixheaacd_drc_offset = info->samp_per_bk - info->bins_per_sbk;
memcpy(l_spec_prev + ixheaacd_drc_offset, l_spec + ixheaacd_drc_offset,
sizeof(WORD32) * info->bins_per_sbk);
memcpy(r_spec_prev + ixheaacd_drc_offset, r_spec + ixheaacd_drc_offset,
sizeof(WORD32) * info->bins_per_sbk);
}
static WORD32 ixheaacd_cplx_pred_data(
ia_usac_data_struct *usac_data,
ia_usac_tmp_core_coder_struct *pstr_core_coder, WORD32 num_window_groups,
ia_bit_buf_struct *it_bit_buff) {
ia_huff_code_book_struct *ptr_huff_code_book = &ixheaacd_book;
ia_huff_code_word_struct *ptr_huff_code_word =
ptr_huff_code_book->pstr_huff_code_word;
WORD32 cplx_pred_all;
WORD32 delta_code_time;
WORD32 g, sfb;
WORD32 dpcm_alpha, last_alpha_q_re, last_alpha_q_im;
UWORD8 max_sfb_ste = pstr_core_coder->max_sfb_ste;
WORD32(*alpha_q_re)[SFB_NUM_MAX] = usac_data->alpha_q_re;
WORD32(*alpha_q_im)[SFB_NUM_MAX] = usac_data->alpha_q_im;
WORD32 *alpha_q_re_prev = usac_data->alpha_q_re_prev;
WORD32 *alpha_q_im_prev = usac_data->alpha_q_im_prev;
UWORD8(*cplx_pred_used)[SFB_NUM_MAX] = usac_data->cplx_pred_used;
cplx_pred_all = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (cplx_pred_all == 0) {
for (g = 0; g < num_window_groups; g++) {
for (sfb = 0; sfb < max_sfb_ste; sfb += SFB_PER_PRED_BAND) {
cplx_pred_used[g][sfb] = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (sfb + 1 < max_sfb_ste)
cplx_pred_used[g][sfb + 1] = cplx_pred_used[g][sfb];
}
for (sfb = max_sfb_ste; sfb < SFB_NUM_MAX; sfb++)
cplx_pred_used[g][sfb] = 0;
}
} else {
for (g = 0; g < num_window_groups; g++) {
for (sfb = 0; sfb < max_sfb_ste; sfb++) cplx_pred_used[g][sfb] = 1;
for (sfb = max_sfb_ste; sfb < SFB_NUM_MAX; sfb++)
cplx_pred_used[g][sfb] = 0;
}
}
pstr_core_coder->pred_dir = ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_core_coder->complex_coef = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_core_coder->complex_coef) {
if (usac_data->usac_independency_flg)
pstr_core_coder->use_prev_frame = 0;
else
pstr_core_coder->use_prev_frame = ixheaacd_read_bits_buf(it_bit_buff, 1);
}
if (usac_data->usac_independency_flg)
delta_code_time = 0;
else
delta_code_time = ixheaacd_read_bits_buf(it_bit_buff, 1);
for (g = 0; g < num_window_groups; g++) {
for (sfb = 0; sfb < max_sfb_ste; sfb += SFB_PER_PRED_BAND) {
if (delta_code_time == 1) {
last_alpha_q_re = alpha_q_re_prev[sfb];
last_alpha_q_im = alpha_q_im_prev[sfb];
} else {
if (sfb > 0) {
last_alpha_q_re = alpha_q_re[g][sfb - 1];
last_alpha_q_im = alpha_q_im[g][sfb - 1];
} else {
last_alpha_q_re = last_alpha_q_im = 0;
}
}
if (cplx_pred_used[g][sfb] == 1) {
dpcm_alpha =
-ixheaacd_huff_codeword(ptr_huff_code_word, 0, it_bit_buff) + 60;
alpha_q_re[g][sfb] = dpcm_alpha + last_alpha_q_re;
if (pstr_core_coder->complex_coef) {
dpcm_alpha =
-ixheaacd_huff_codeword(ptr_huff_code_word, 0, it_bit_buff) + 60;
alpha_q_im[g][sfb] = dpcm_alpha + last_alpha_q_im;
} else {
alpha_q_im[g][sfb] = 0;
}
} else {
alpha_q_re[g][sfb] = 0;
alpha_q_im[g][sfb] = 0;
}
if ((sfb + 1) < max_sfb_ste) {
alpha_q_re[g][sfb + 1] = alpha_q_re[g][sfb];
alpha_q_im[g][sfb + 1] = alpha_q_im[g][sfb];
}
alpha_q_re_prev[sfb] = alpha_q_re[g][sfb];
alpha_q_im_prev[sfb] = alpha_q_im[g][sfb];
}
for (sfb = max_sfb_ste; sfb < SFB_NUM_MAX; sfb++) {
alpha_q_re[g][sfb] = 0;
alpha_q_im[g][sfb] = 0;
alpha_q_re_prev[sfb] = 0;
alpha_q_im_prev[sfb] = 0;
}
}
return 1;
}
static WORD32 ixheaacd_read_ms_mask(
ia_usac_data_struct *usac_data,
ia_usac_tmp_core_coder_struct *pstr_core_coder,
ia_bit_buf_struct *it_bit_buff, WORD32 chn) {
WORD32 g, sfb;
WORD32 ms_mask_present;
UWORD8 *sfb_group = usac_data->group_dis[chn];
UWORD8 max_sfb = pstr_core_coder->max_sfb_ste;
UWORD8 *ms_used = usac_data->ms_used[chn];
ia_sfb_info_struct *info = usac_data->pstr_sfb_info[chn];
ms_mask_present = ixheaacd_read_bits_buf(it_bit_buff, 2);
switch (ms_mask_present) {
case 0:
break;
case 1:
for (g = 0; g < info->max_win_len; g = *sfb_group++) {
for (sfb = 0; sfb < max_sfb; sfb++) {
*ms_used = ixheaacd_read_bits_buf(it_bit_buff, 1);
ms_used++;
}
for (; sfb < info->sfb_per_sbk; sfb++) {
*ms_used = 0;
ms_used++;
}
}
break;
case 2:
for (g = 0; g < info->max_win_len; g = *sfb_group++)
for (sfb = 0; sfb < info->sfb_per_sbk; sfb++) *ms_used++ = 1;
break;
case 3:
ixheaacd_cplx_pred_data(usac_data, pstr_core_coder, info->num_groups,
it_bit_buff);
return 3;
}
for (sfb = 0; sfb < SFB_NUM_MAX; sfb++) {
usac_data->alpha_q_re_prev[sfb] = 0;
usac_data->alpha_q_im_prev[sfb] = 0;
}
return ms_mask_present;
}
VOID ixheaacd_ms_stereo(ia_usac_data_struct *usac_data, WORD32 *r_spec,
WORD32 *l_spec, WORD32 chn, WORD32 nband) {
WORD32 temp_r, temp_l;
WORD32 sfb, k, grp, grp_len;
ia_sfb_info_struct *ptr_sfb_info = usac_data->pstr_sfb_info[chn];
UWORD8 *ms_used = usac_data->ms_used[chn];
WORD32 ixheaacd_drc_offset = 0;
for (grp = 0; grp < ptr_sfb_info->num_groups; grp++) {
for (grp_len = 0; grp_len < ptr_sfb_info->group_len[grp]; grp_len++) {
ixheaacd_drc_offset = 0;
for (sfb = 0; sfb < nband; sfb++) {
ixheaacd_drc_offset += ptr_sfb_info->sfb_width[sfb];
if (ms_used[sfb]) {
for (k = 0; k < ptr_sfb_info->sfb_width[sfb]; k++) {
temp_r = *r_spec;
temp_l = *l_spec;
*l_spec = ixheaacd_add32_sat(temp_r, temp_l);
*r_spec = ixheaacd_sub32_sat(temp_l, temp_r);
r_spec++;
l_spec++;
}
} else {
r_spec += ptr_sfb_info->sfb_width[sfb];
l_spec += ptr_sfb_info->sfb_width[sfb];
}
}
l_spec = l_spec + ptr_sfb_info->bins_per_sbk - ixheaacd_drc_offset;
r_spec = r_spec + ptr_sfb_info->bins_per_sbk - ixheaacd_drc_offset;
}
ms_used += ptr_sfb_info->sfb_per_sbk;
}
}
static VOID ixheaacd_filter_and_add(const WORD32 *in, const WORD32 length,
const WORD16 *filter, WORD32 *out,
const WORD32 factor_even,
const WORD32 factor_odd) {
WORD32 i;
WORD64 sum;
sum = ixheaacd_mult32x32in64(in[2], filter[0]);
sum = ixheaacd_mac32x32in64(sum, in[1], filter[1]);
sum = ixheaacd_mac32x32in64(sum, in[0], filter[2]);
sum = ixheaacd_mac32x32in64_n(sum, &in[0], &filter[3], 4);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_even) >> 15)));
out++;
sum = ixheaacd_mult32x32in64(in[1], filter[0]);
sum = ixheaacd_mac32x32in64(sum, in[0], filter[1]);
sum = ixheaacd_mac32x32in64_n(sum, &in[0], &filter[2], 5);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_odd) >> 15)));
out++;
sum = ixheaacd_mult32x32in64(in[0], filter[0]);
sum = ixheaacd_mac32x32in64_n(sum, &in[0], &filter[1], 6);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_even) >> 15)));
out++;
for (i = 3; i < length - 4; i += 2) {
sum = 0;
sum = ixheaacd_mac32x32in64_7(sum, &in[i - 3], filter);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_odd) >> 15)));
out++;
sum = 0;
sum = ixheaacd_mac32x32in64_7(sum, &in[i - 2], filter);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_even) >> 15)));
out++;
}
i = length - 3;
sum = 0;
sum = ixheaacd_mac32x32in64_n(sum, &in[i - 3], filter, 6);
sum = ixheaacd_mac32x32in64(sum, in[i + 2], filter[6]);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_odd) >> 15)));
out++;
i = length - 2;
sum = 0;
sum = ixheaacd_mac32x32in64_n(sum, &in[i - 3], filter, 5);
sum = ixheaacd_mac32x32in64(sum, in[i + 1], filter[5]);
sum = ixheaacd_mac32x32in64(sum, in[i], filter[6]);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_even) >> 15)));
out++;
i = length - 1;
sum = 0;
sum = ixheaacd_mac32x32in64_n(sum, &in[i - 3], filter, 4);
sum = ixheaacd_mac32x32in64(sum, in[i], filter[4]);
sum = ixheaacd_mac32x32in64(sum, in[i - 1], filter[5]);
sum = ixheaacd_mac32x32in64(sum, in[i - 2], filter[6]);
*out = ixheaacd_add32_sat(
*out, ixheaacd_sat64_32((((WORD64)sum * (WORD64)factor_odd) >> 15)));
}
static WORD32 ixheaacd_estimate_dmx_im(const WORD32 *dmx_re,
const WORD32 *dmx_re_prev,
WORD32 *dmx_im,
ia_sfb_info_struct *pstr_sfb_info,
WORD32 window, const WORD32 w_shape,
const WORD32 prev_w_shape) {
WORD32 i;
const WORD16 *mdst_fcoeff_curr, *mdst_fcoeff_prev;
WORD32 err = 0;
switch (window) {
case ONLY_LONG_SEQUENCE:
case EIGHT_SHORT_SEQUENCE:
mdst_fcoeff_curr =
ixheaacd_mdst_fcoeff_longshort_curr[prev_w_shape][w_shape];
mdst_fcoeff_prev = ixheaacd_mdst_fcoeff_l_s_start_left_prev[prev_w_shape];
break;
case LONG_START_SEQUENCE:
mdst_fcoeff_curr = ixheaacd_mdst_fcoeff_start_curr[prev_w_shape][w_shape];
mdst_fcoeff_prev = ixheaacd_mdst_fcoeff_l_s_start_left_prev[prev_w_shape];
break;
case LONG_STOP_SEQUENCE:
mdst_fcoeff_curr = ixheaacd_mdst_fcoeff_stop_cur[prev_w_shape][w_shape];
mdst_fcoeff_prev =
ixheaacd_mdst_fcoeff_stop_stopstart_left_prev[prev_w_shape];
break;
case STOP_START_SEQUENCE:
mdst_fcoeff_curr =
ixheaacd_mdst_fcoeff_stopstart_cur[prev_w_shape][w_shape];
mdst_fcoeff_prev =
ixheaacd_mdst_fcoeff_stop_stopstart_left_prev[prev_w_shape];
break;
default:
mdst_fcoeff_curr =
ixheaacd_mdst_fcoeff_stopstart_cur[prev_w_shape][w_shape];
mdst_fcoeff_prev =
ixheaacd_mdst_fcoeff_stop_stopstart_left_prev[prev_w_shape];
break;
}
for (i = 0; i < pstr_sfb_info->max_win_len; i++) {
ixheaacd_filter_and_add(dmx_re, pstr_sfb_info->bins_per_sbk,
mdst_fcoeff_curr, dmx_im, 1, 1);
if (dmx_re_prev)
ixheaacd_filter_and_add(dmx_re_prev, pstr_sfb_info->bins_per_sbk,
mdst_fcoeff_prev, dmx_im, -1, 1);
dmx_re_prev = dmx_re;
dmx_re += pstr_sfb_info->bins_per_sbk;
dmx_im += pstr_sfb_info->bins_per_sbk;
}
return err;
}
static WORD32 ixheaacd_cplx_pred_upmixing(
ia_usac_data_struct *usac_data, WORD32 *l_spec, WORD32 *r_spec,
ia_usac_tmp_core_coder_struct *pstr_core_coder, WORD32 chn) {
ia_sfb_info_struct *pstr_sfb_info = usac_data->pstr_sfb_info[chn];
WORD32 *dmx_re = &usac_data->scratch_buffer[0];
WORD32 *dmx_im = &usac_data->x_ac_dec[0];
WORD32 grp, sfb, grp_len, i = 0, k;
WORD32 *dmx_re_prev = usac_data->dmx_re_prev;
const WORD32(*alpha_q_re)[SFB_NUM_MAX] = usac_data->alpha_q_re;
const WORD32(*alpha_q_im)[SFB_NUM_MAX] = usac_data->alpha_q_im;
WORD32 err = 0;
UWORD8(*cplx_pred_used)[SFB_NUM_MAX] = usac_data->cplx_pred_used;
WORD32 alpha_q_re_temp;
WORD32 alpha_q_im_temp;
WORD32 factor = 1;
if (pstr_core_coder->pred_dir) factor = -1;
for (grp = 0; grp < pstr_sfb_info->num_groups; grp++) {
for (grp_len = 0; grp_len < pstr_sfb_info->group_len[grp]; grp_len++) {
for (sfb = 0; sfb < pstr_sfb_info->sfb_per_sbk; sfb++) {
if (cplx_pred_used[grp][sfb] == 1) {
memcpy(&dmx_re[i], &l_spec[i],
pstr_sfb_info->sfb_width[sfb] * sizeof(WORD32));
i += pstr_sfb_info->sfb_width[sfb];
}
else {
for (k = 0; k < pstr_sfb_info->sfb_width[sfb]; k++, i++) {
dmx_re[i] = (WORD32)(
((WORD64)l_spec[i] + ((WORD64)factor * (WORD64)r_spec[i])) >>
1);
}
}
}
}
}
memset(dmx_im, 0, sizeof(WORD32) * BLOCK_LEN_LONG);
if (pstr_core_coder->complex_coef) {
WORD32 *p_dmx_re_prev =
pstr_core_coder->use_prev_frame ? dmx_re_prev : NULL;
err = ixheaacd_estimate_dmx_im(dmx_re, p_dmx_re_prev, dmx_im, pstr_sfb_info,
usac_data->window_sequence[chn],
usac_data->window_shape[chn],
usac_data->window_shape_prev[chn]);
if (err == -1) return err;
for (grp = 0, i = 0; grp < pstr_sfb_info->num_groups; grp++) {
for (grp_len = 0; grp_len < pstr_sfb_info->group_len[grp]; grp_len++) {
for (sfb = 0; sfb < pstr_sfb_info->sfb_per_sbk; sfb++) {
alpha_q_re_temp = alpha_q_re[grp][sfb] * 1677722;
alpha_q_im_temp = alpha_q_im[grp][sfb] * 1677722;
if (cplx_pred_used[grp][sfb]) {
for (k = 0; k < pstr_sfb_info->sfb_width[sfb]; k++, i++) {
WORD32 mid_side = ixheaacd_sub32_sat(
ixheaacd_sub32_sat(r_spec[i],
(WORD32)((WORD64)ixheaacd_mult32x32in64(
alpha_q_re_temp, l_spec[i]) >>
24)),
(WORD32)((WORD64)ixheaacd_mult32x32in64(alpha_q_im_temp,
dmx_im[i]) >>
24));
r_spec[i] = ixheaacd_sat64_32((WORD64)factor) *
(WORD64)(ixheaacd_sub32_sat(l_spec[i], mid_side));
l_spec[i] = ixheaacd_add32_sat(l_spec[i], mid_side);
}
} else {
i += pstr_sfb_info->sfb_width[sfb];
}
}
}
}
} else {
for (grp = 0, i = 0; grp < pstr_sfb_info->num_groups; grp++) {
for (grp_len = 0; grp_len < pstr_sfb_info->group_len[grp]; grp_len++) {
for (sfb = 0; sfb < pstr_sfb_info->sfb_per_sbk; sfb++) {
alpha_q_re_temp = alpha_q_re[grp][sfb] * 1677722;
if (cplx_pred_used[grp][sfb]) {
for (k = 0; k < pstr_sfb_info->sfb_width[sfb]; k++, i++) {
WORD32 mid_side = ixheaacd_sub32_sat(
r_spec[i], (WORD32)((WORD64)ixheaacd_mult32x32in64(
alpha_q_re_temp, l_spec[i]) >>
24));
r_spec[i] = ixheaacd_sat64_32((WORD64)factor) *
(WORD64)(ixheaacd_sub32_sat(l_spec[i], mid_side));
l_spec[i] = ixheaacd_add32_sat(l_spec[i], mid_side);
}
} else {
i += pstr_sfb_info->sfb_width[sfb];
}
}
}
}
}
return err;
}
static VOID ixheaacd_cplx_prev_mdct_dmx(ia_sfb_info_struct *pstr_sfb_info,
WORD32 *l_spec, WORD32 *r_spec,
WORD32 *dmx_re_prev, WORD32 pred_dir) {
WORD32 offs, i;
WORD32 factor = 1;
if (pred_dir) factor = -1;
offs = pstr_sfb_info->samp_per_bk - pstr_sfb_info->bins_per_sbk;
for (i = 0; i < pstr_sfb_info->bins_per_sbk; i++)
dmx_re_prev[i] = (WORD32)(((WORD64)l_spec[i + offs] +
((WORD64)factor * (WORD64)r_spec[i + offs])) >>
1);
}
WORD32 ixheaacd_ics_info(ia_usac_data_struct *usac_data, WORD32 chn,
UWORD8 *max_sfb, ia_bit_buf_struct *it_bit_buff,
WORD32 window_sequence_last
)
{
WORD32 win;
WORD32 mask = 0x40;
UWORD8 *scf_group_ptr = usac_data->group_dis[chn];
win = ixheaacd_read_bits_buf(it_bit_buff, 2);
win = usac_data->window_sequence[chn] =
ixheaacd_win_seq_select(win, window_sequence_last);
if (win == -1) return -1;
usac_data->pstr_sfb_info[chn] =
usac_data->pstr_usac_winmap[usac_data->window_sequence[chn]];
usac_data->window_shape[chn] = (WORD32)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (usac_data->pstr_usac_winmap[win]->islong) {
*max_sfb = ixheaacd_read_bits_buf(it_bit_buff, 6);
*scf_group_ptr = 1;
} else {
WORD32 i, scale_factor_grouping;
*max_sfb = ixheaacd_read_bits_buf(it_bit_buff, 4);
scale_factor_grouping = ixheaacd_read_bits_buf(it_bit_buff, 7);
for (i = 1; i < 8; i++) {
if (!(scale_factor_grouping & mask)) *scf_group_ptr++ = i;
mask = mask >> 1;
}
*scf_group_ptr++ = i;
ixheaacd_calc_grp_offset(usac_data->pstr_usac_winmap[win],
&usac_data->group_dis[chn][0]);
}
if (*max_sfb > usac_data->pstr_sfb_info[chn]->sfb_per_sbk) {
*max_sfb = usac_data->pstr_sfb_info[chn]->sfb_per_sbk;
return 0;
}
return 0;
}
WORD32 ixheaacd_core_coder_data(WORD32 id, ia_usac_data_struct *usac_data,
WORD32 elem_idx, WORD32 chan_offset,
ia_bit_buf_struct *it_bit_buff,
WORD32 nr_core_coder_channels) {
WORD32 err_code = 0;
WORD32 k = 0, ch = 0, chn, left = 0, right = 0;
ia_usac_tmp_core_coder_struct str_tmp_core_coder = {0};
ia_usac_tmp_core_coder_struct *pstr_core_coder = &str_tmp_core_coder;
ia_td_frame_data_struct td_frame;
memset(&td_frame, 0, sizeof(td_frame));
pstr_core_coder->tns_on_lr = 0;
pstr_core_coder->pred_dir = 0;
if (id != ID_USAC_LFE) {
for (ch = 0; ch < nr_core_coder_channels; ch++)
pstr_core_coder->core_mode[ch] = ixheaacd_read_bits_buf(it_bit_buff, 1);
} else {
for (ch = 0; ch < nr_core_coder_channels; ch++)
pstr_core_coder->core_mode[ch] = 0;
}
if (nr_core_coder_channels == 2 && pstr_core_coder->core_mode[0] == 0 &&
pstr_core_coder->core_mode[1] == 0) {
pstr_core_coder->tns_active = ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_core_coder->common_window = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_core_coder->common_window) {
left = chan_offset;
right = chan_offset + 1;
err_code =
ixheaacd_ics_info(usac_data, left, &pstr_core_coder->max_sfb[left],
it_bit_buff, usac_data->window_sequence_last[left]);
if (err_code == -1) return err_code;
pstr_core_coder->common_max_sfb = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_core_coder->common_max_sfb == 0) {
if (usac_data->window_sequence[left] == EIGHT_SHORT_SEQUENCE)
pstr_core_coder->max_sfb[right] =
ixheaacd_read_bits_buf(it_bit_buff, 4);
else
pstr_core_coder->max_sfb[right] =
ixheaacd_read_bits_buf(it_bit_buff, 6);
} else {
pstr_core_coder->max_sfb[right] = pstr_core_coder->max_sfb[left];
}
pstr_core_coder->max_sfb_ste =
max(pstr_core_coder->max_sfb[left], pstr_core_coder->max_sfb[right]);
usac_data->window_sequence[right] = usac_data->window_sequence[left];
usac_data->window_shape[right] = usac_data->window_shape[left];
memcpy(&usac_data->group_dis[right][0], &usac_data->group_dis[left][0],
8);
usac_data->pstr_sfb_info[right] = usac_data->pstr_sfb_info[left];
if (pstr_core_coder->max_sfb[right] >
usac_data->pstr_sfb_info[right]->sfb_per_sbk)
pstr_core_coder->max_sfb[right] =
usac_data->pstr_sfb_info[right]->sfb_per_sbk;
pstr_core_coder->ms_mask_present[0] =
ixheaacd_read_ms_mask(usac_data, pstr_core_coder, it_bit_buff, left);
} else {
left = chan_offset;
right = chan_offset + 1;
pstr_core_coder->ms_mask_present[0] = 0;
pstr_core_coder->ms_mask_present[1] = 0;
for (k = 0; k < SFB_NUM_MAX; k++) {
usac_data->alpha_q_re_prev[k] = 0;
usac_data->alpha_q_im_prev[k] = 0;
}
}
if (usac_data->tw_mdct[elem_idx] == 1) {
pstr_core_coder->common_tw = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_core_coder->common_tw == 1) {
usac_data->tw_data_present[left] =
ixheaacd_read_bits_buf(it_bit_buff, 1);
usac_data->tw_data_present[right] = usac_data->tw_data_present[left];
if (usac_data->tw_data_present[left]) {
for (k = 0; k < NUM_TW_NODES; k++) {
usac_data->tw_ratio[left][k] =
ixheaacd_read_bits_buf(it_bit_buff, 3);
usac_data->tw_ratio[right][k] = usac_data->tw_ratio[left][k];
}
}
}
}
if (pstr_core_coder->tns_active) {
if (pstr_core_coder->common_window) {
pstr_core_coder->common_tns = ixheaacd_read_bits_buf(it_bit_buff, 1);
} else {
pstr_core_coder->common_tns = 0;
}
pstr_core_coder->tns_on_lr = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_core_coder->common_tns) {
ixheaacd_read_tns_u(usac_data->pstr_sfb_info[0],
&usac_data->pstr_tns[left][0], it_bit_buff);
memcpy(&usac_data->pstr_tns[right][0], &usac_data->pstr_tns[left][0],
sizeof(ia_tns_frame_info_struct));
pstr_core_coder->tns_data_present[0] = 2;
pstr_core_coder->tns_data_present[1] = 2;
} else {
pstr_core_coder->tns_present_both =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_core_coder->tns_present_both) {
pstr_core_coder->tns_data_present[0] = 1;
pstr_core_coder->tns_data_present[1] = 1;
} else {
pstr_core_coder->tns_data_present[1] =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_core_coder->tns_data_present[0] =
1 - pstr_core_coder->tns_data_present[1];
}
}
} else {
pstr_core_coder->common_tns = 0;
pstr_core_coder->tns_data_present[0] = 0;
pstr_core_coder->tns_data_present[1] = 0;
}
} else {
pstr_core_coder->common_window = 0;
pstr_core_coder->common_tw = 0;
left = chan_offset;
right = chan_offset;
if (nr_core_coder_channels == 2) right = chan_offset + 1;
}
for (ch = 0, chn = chan_offset; ch < nr_core_coder_channels; ch++, chn++) {
if (pstr_core_coder->core_mode[ch] == 1) {
err_code =
ixheaacd_tw_buff_update(usac_data, chn, usac_data->str_tddec[chn]);
if (err_code == -1) return err_code;
if (!usac_data->td_frame_prev[chn]) {
ixheaacd_fix2flt_data(usac_data, usac_data->str_tddec[chn], chn);
}
for (k = 0; k < usac_data->ccfl; k++) {
usac_data->time_sample_vector[chn][k] =
(FLOAT32)((FLOAT32)usac_data->output_data_ptr[chn][k] *
(FLOAT32)(ONE_BY_TWO_POW_15));
}
usac_data->present_chan = chn;
err_code =
ixheaacd_lpd_channel_stream(usac_data, &td_frame, it_bit_buff,
usac_data->time_sample_vector[chn]);
if (err_code == -1) return err_code;
for (k = 0; k < usac_data->ccfl; k++) {
usac_data->output_data_ptr[chn][k] = (WORD32)(
usac_data->time_sample_vector[chn][k] * (FLOAT32)((WORD64)1 << 15));
}
usac_data->window_shape[chn] = WIN_SEL_0;
ixheaacd_td_frm_dec(usac_data, chn, td_frame.mod[0]);
for (k = 0; k < usac_data->ccfl; k++) {
usac_data->time_sample_vector[chn][k] =
(FLOAT32)((FLOAT32)usac_data->output_data_ptr[chn][k] *
(FLOAT32)(ONE_BY_TWO_POW_15));
}
usac_data->window_shape_prev[chn] = usac_data->window_shape[chn];
usac_data->window_sequence_last[chn] = EIGHT_SHORT_SEQUENCE;
} else {
memset(usac_data->coef_fix[chn], 0,
LN2 * sizeof(*usac_data->coef_fix[0]));
if (usac_data->str_tddec[chn] && usac_data->td_frame_prev[chn]) {
ixheaacd_lpd_dec_update(usac_data->str_tddec[chn], usac_data, chn);
}
if (id != ID_USAC_LFE) {
if ((nr_core_coder_channels == 1) ||
(pstr_core_coder->core_mode[0] != pstr_core_coder->core_mode[1]))
pstr_core_coder->tns_data_present[ch] =
ixheaacd_read_bits_buf(it_bit_buff, 1);
}
err_code = ixheaacd_fd_channel_stream(
usac_data, pstr_core_coder, &pstr_core_coder->max_sfb[ch],
usac_data->window_sequence_last[chn], chn,
usac_data->noise_filling_config[elem_idx], ch, it_bit_buff);
if (err_code == -1) return err_code;
}
}
if (pstr_core_coder->core_mode[0] == CORE_MODE_FD &&
pstr_core_coder->core_mode[1] == CORE_MODE_FD &&
nr_core_coder_channels == 2) {
ixheaacd_cplx_prev_mdct_dmx(
usac_data->pstr_sfb_info[left], usac_data->coef_save[left],
usac_data->coef_save[right], usac_data->dmx_re_prev,
pstr_core_coder->pred_dir);
}
if (pstr_core_coder->tns_on_lr == 0 && (id != ID_USAC_LFE)) {
for (ch = 0, chn = left; chn <= right; ch++, chn++) {
if (pstr_core_coder->core_mode[ch] == CORE_MODE_FD) {
err_code = ixheaacd_tns_apply(
usac_data, usac_data->coef_fix[chn], pstr_core_coder->max_sfb[ch],
usac_data->pstr_sfb_info[chn], usac_data->pstr_tns[chn]);
if (err_code) return err_code;
}
}
}
if (nr_core_coder_channels == 2 && pstr_core_coder->core_mode[0] == 0 &&
pstr_core_coder->core_mode[1] == 0) {
if (pstr_core_coder->ms_mask_present[0] == 3) {
err_code = ixheaacd_cplx_pred_upmixing(
usac_data, usac_data->coef_fix[left], usac_data->coef_fix[right],
pstr_core_coder, left);
if (err_code == -1) return err_code;
} else if (pstr_core_coder->ms_mask_present[0] > 0) {
ixheaacd_ms_stereo(
usac_data, usac_data->coef_fix[right], usac_data->coef_fix[left],
left, pstr_core_coder->max_sfb[right] > pstr_core_coder->max_sfb[left]
? pstr_core_coder->max_sfb[right]
: pstr_core_coder->max_sfb[left]);
}
if (pstr_core_coder->tns_on_lr) {
for (ch = 0, chn = left; chn <= right; ch++, chn++) {
if (pstr_core_coder->core_mode[ch] == CORE_MODE_FD) {
err_code = ixheaacd_tns_apply(
usac_data, usac_data->coef_fix[chn], pstr_core_coder->max_sfb[ch],
usac_data->pstr_sfb_info[chn], usac_data->pstr_tns[chn]);
if (err_code) return err_code;
}
}
}
ixheaacd_usac_cplx_save_prev(
usac_data->pstr_sfb_info[left], usac_data->coef_fix[left],
usac_data->coef_fix[right], usac_data->coef_save[left],
usac_data->coef_save[right]);
}
for (ch = left; ch <= right; ch++) {
if (pstr_core_coder->core_mode[ch] == CORE_MODE_FD) {
if (usac_data->tw_mdct[elem_idx]) {
err_code = -1;
return err_code;
} else {
err_code = ixheaacd_fd_frm_dec(usac_data, ch);
if (err_code == -1) return err_code;
for (k = 0; k < usac_data->ccfl; k++) {
usac_data->time_sample_vector[ch][k] =
(FLOAT32)((FLOAT32)usac_data->output_data_ptr[ch][k] *
(FLOAT32)(ONE_BY_TWO_POW_15));
}
}
usac_data->window_shape_prev[ch] = usac_data->window_shape[ch];
usac_data->window_sequence_last[ch] = usac_data->window_sequence[ch];
}
}
for (ch = 0, chn = left; chn <= right; chn++, ch++)
usac_data->td_frame_prev[chn] = pstr_core_coder->core_mode[ch];
return 0;
}