/******************************************************************************
* *
* 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.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_sbr_common.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_sbrdecsettings.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 <math.h>
#include "ixheaacd_sbr_const.h"
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_pvc_dec.h"
#include "ixheaacd_ps_bitdec.h"
#include "ixheaacd_audioobjtypes.h"
WORD32 ixheaacd_cnt_leading_ones(WORD32 a) {
WORD32 count = 0;
while (a) {
if (a & 0x80000000)
count++;
else
break;
a = a << 1;
}
return count;
}
VOID ixheaacd_huffman_decode(WORD32 it_bit_buff, WORD16 *h_index, WORD16 *len,
const UWORD16 *input_table,
const UWORD32 *idx_table) {
UWORD32 temp = 0;
UWORD32 temp1 = 0;
WORD32 found = 0;
UWORD32 mask = 0x80000000;
WORD32 clo;
WORD32 MAX_LEN;
WORD32 ixheaacd_drc_offset = 0;
WORD32 length;
UWORD32 cwrd;
WORD32 len_end;
MAX_LEN = input_table[0];
mask = mask - (1 << (31 - MAX_LEN));
mask = mask << 1;
temp = (UWORD32)(it_bit_buff & mask);
len_end = input_table[0];
clo = ixheaacd_cnt_leading_ones(temp);
do {
ixheaacd_drc_offset = (idx_table[clo] >> 20) & 0xff;
length = input_table[ixheaacd_drc_offset + 1] & 0x1f;
cwrd = idx_table[clo] & 0xfffff;
temp1 = temp >> (32 - length);
if (temp1 <= cwrd) {
ixheaacd_drc_offset = ixheaacd_drc_offset - (cwrd - temp1);
found = 1;
} else {
len_end = len_end + ((idx_table[clo] >> 28) & 0xf);
clo = len_end;
}
} while (!found);
*h_index = input_table[ixheaacd_drc_offset + 1] >> 5;
*len = length;
}
static WORD32 ixheaacd_read_esbr_pvc_envelope(ia_pvc_data_struct *ptr_pvc_data,
ia_bit_buf_struct *it_bit_buff,
WORD32 indepFlag) {
WORD32 i, j, k;
WORD32 fixed_length = 0, num_grid_info = 0, grid_info;
UWORD8 div_mode, ns_mode;
UWORD16 pvc_id[PVC_NUM_TIME_SLOTS + 1];
UWORD8 num_length;
UWORD8 length;
UWORD8 reuse_pvc_id;
WORD32 sum_length = 0;
WORD32 length_bits = 4;
UWORD8 pvc_id_bits = PVC_ID_BITS;
div_mode = (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, PVC_DIV_MODE_BITS);
ns_mode = (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, PVC_NS_MODE_BITS);
if (ptr_pvc_data->pvc_mode == 3) {
pvc_id_bits = 0;
}
if (div_mode <= 3) {
num_length = div_mode;
if (indepFlag) {
reuse_pvc_id = 0;
} else {
reuse_pvc_id =
(UWORD8)ixheaacd_read_bits_buf(it_bit_buff, PVC_REUSE_PVC_ID_BITS);
}
if (reuse_pvc_id == 1) {
pvc_id[0] = ptr_pvc_data->prev_pvc_id;
} else {
pvc_id[0] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
}
k = 1;
if (num_length) {
sum_length = 0;
for (i = 0; i < num_length; i++) {
if (sum_length >= 13) {
length_bits = 1;
} else if (sum_length >= 11) {
length_bits = 2;
} else if (sum_length >= 7) {
length_bits = 3;
} else {
length_bits = 4;
}
length = (UWORD8)ixheaacd_read_bits_buf(it_bit_buff, length_bits);
length += 1;
sum_length += length;
if ((k + length - 1) > PVC_NUM_TIME_SLOTS) {
return -1;
}
for (j = 1; j < length; j++, k++) {
pvc_id[k] = pvc_id[k - 1];
}
pvc_id[k++] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
}
}
for (; k < 16; k++) {
pvc_id[k] = pvc_id[k - 1];
}
} else {
switch (div_mode) {
case 4:
num_grid_info = 2;
fixed_length = 8;
break;
case 5:
num_grid_info = 4;
fixed_length = 4;
break;
case 6:
num_grid_info = 8;
fixed_length = 2;
break;
case 7:
num_grid_info = 16;
fixed_length = 1;
break;
default:;
}
if (indepFlag) {
grid_info = 1;
} else {
grid_info = ixheaacd_read_bits_buf(it_bit_buff, PVC_GRID_INFO_BITS);
}
if (grid_info) {
pvc_id[0] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
} else {
pvc_id[0] = ptr_pvc_data->prev_pvc_id;
}
for (j = 1, k = 1; j < fixed_length; j++, k++) {
pvc_id[k] = pvc_id[k - 1];
}
for (i = 1; i < num_grid_info; i++) {
grid_info = ixheaacd_read_bits_buf(it_bit_buff, PVC_GRID_INFO_BITS);
if (grid_info == 1) {
pvc_id[k++] = (UWORD16)ixheaacd_read_bits_buf(it_bit_buff, pvc_id_bits);
} else {
pvc_id[k] = pvc_id[k - 1];
k++;
}
for (j = 1; j < fixed_length; j++, k++) {
pvc_id[k] = pvc_id[k - 1];
}
}
}
ptr_pvc_data->div_mode = div_mode;
ptr_pvc_data->ns_mode = ns_mode;
for (i = 0; i < PVC_NUM_TIME_SLOTS; i++) {
ptr_pvc_data->pvc_id[i] = pvc_id[i];
}
return 0;
}
static VOID ixheaacd_pvc_env_dtdf_data(
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff) {
WORD32 i;
WORD32 usac_independency_flag = ptr_frame_data->usac_independency_flag;
WORD32 bs_num_noise = ptr_frame_data->str_frame_info_details.num_noise_env;
if (usac_independency_flag) {
ptr_frame_data->del_cod_dir_noise_arr[0] = 0;
} else {
ptr_frame_data->del_cod_dir_noise_arr[0] =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_DOMAIN_BITS);
}
for (i = 1; i < bs_num_noise; i++) {
ptr_frame_data->del_cod_dir_noise_arr[i] =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_DOMAIN_BITS);
}
}
static VOID ixheaacd_read_sbr_addi_data(
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_sbr_header_data_struct *ptr_header_data,
ia_bit_buf_struct *it_bit_buff) {
WORD32 i;
WORD32 flag = ixheaacd_read_bits_buf(it_bit_buff, 1);
ptr_frame_data->sin_start_for_cur_top =
ptr_frame_data->sin_start_for_next_top;
ptr_frame_data->sin_len_for_cur_top = ptr_frame_data->sin_len_for_next_top;
ptr_frame_data->sin_start_for_next_top = 0;
ptr_frame_data->sin_len_for_next_top = 0;
if (flag) {
for (i = 0; i < ptr_header_data->pstr_freq_band_data->num_sf_bands[HIGH];
i++) {
ptr_frame_data->add_harmonics[i] = ixheaacd_read_bits_buf(it_bit_buff, 1);
}
if (ptr_frame_data->pvc_mode != 0) {
ptr_frame_data->sine_position = ESC_SIN_POS;
ptr_frame_data->bs_sin_pos_present =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (ptr_frame_data->bs_sin_pos_present == 1) {
ptr_frame_data->sine_position = ixheaacd_read_bits_buf(it_bit_buff, 5);
}
if (ptr_frame_data->var_len > 0) {
if (ptr_frame_data->sine_position > 16) {
if (ptr_frame_data->sine_position == 31) {
ptr_frame_data->sin_start_for_next_top = 0;
ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
} else {
if ((ptr_frame_data->var_len + 16) ==
ptr_frame_data->sine_position) {
ptr_frame_data->sin_start_for_next_top = 0;
ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
} else {
ptr_frame_data->sin_start_for_next_top =
ptr_frame_data->sine_position - 16;
ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
}
}
} else {
ptr_frame_data->sin_start_for_next_top = 0;
ptr_frame_data->sin_len_for_next_top = ptr_frame_data->var_len;
}
} else {
ptr_frame_data->sin_start_for_next_top = 0;
ptr_frame_data->sin_len_for_next_top = 0;
}
}
}
return;
}
WORD32 ixheaacd_ssc_huff_dec(ia_huffman_data_type t_huff,
ia_handle_bit_buf_struct it_bit_buff) {
WORD32 index;
WORD32 value, bit;
WORD16 cw;
index = 0;
while (index >= 0) {
cw = t_huff[index];
bit = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (bit) {
WORD sign = (cw & 0x0080);
if (sign) {
index = (cw | 0xffffff80);
} else {
index = (cw & 0x007f);
}
} else {
index = (cw >> 8);
}
}
value = (index + 64);
return (value);
}
WORD32 ixheaacd_sbr_read_header_data(
ia_sbr_header_data_struct *pstr_sbr_header, ia_bit_buf_struct *it_bit_buff,
FLAG stereo_flag, ia_sbr_header_data_struct *pstr_sbr_dflt_header) {
ia_sbr_header_data_struct prev_header_info;
FLAG header_extra_1 = 0, header_extra_2 = 0;
WORD32 tmp;
WORD32 usac_independency_flag = pstr_sbr_header->usac_independency_flag;
WORD32 use_dflt_hdr = 0;
WORD32 header_present = 1;
WORD32 usac_flag = pstr_sbr_header->usac_flag;
if (!usac_flag) {
memcpy(&prev_header_info, pstr_sbr_header,
sizeof(ia_sbr_header_data_struct));
tmp = ixheaacd_read_bits_buf(
it_bit_buff, SBR_AMPLITUDE_RESOLUTION_BITS + SBR_BEGIN_SAMP_FREQ_BITS +
SBR_END_SAMP_FREQ_BITS + SBR_CROSS_OVER_BND_BITS);
pstr_sbr_header->amp_res = (WORD16)(
(tmp & 0x0800) >> (SBR_BEGIN_SAMP_FREQ_BITS + SBR_END_SAMP_FREQ_BITS +
SBR_CROSS_OVER_BND_BITS));
pstr_sbr_header->start_freq = (WORD16)(
(tmp & 0x0780) >> (SBR_END_SAMP_FREQ_BITS + SBR_CROSS_OVER_BND_BITS));
pstr_sbr_header->stop_freq =
(WORD16)((tmp & 0x078) >> (SBR_CROSS_OVER_BND_BITS));
pstr_sbr_header->xover_band = (WORD16)((tmp & 0x07));
tmp = ixheaacd_read_bits_buf(
it_bit_buff,
SBR_HDR_RESERV_BITS + SBR_HDR_EXTR_1_BITS + SBR_HDR_EXTR_2_BITS);
header_extra_1 = (FLAG)((tmp & 0x02) >> (SBR_HDR_EXTR_2_BITS));
header_extra_2 = (FLAG)((tmp & 0x01));
if (stereo_flag) {
pstr_sbr_header->channel_mode = SBR_STEREO;
} else {
pstr_sbr_header->channel_mode = SBR_MONO;
}
} else {
WORD32 info_present = 0;
if (pstr_sbr_header->sync_state == SBR_ACTIVE) {
memcpy(&prev_header_info, pstr_sbr_header,
sizeof(ia_sbr_header_data_struct));
}
if (usac_independency_flag) {
header_present = 1;
info_present = 1;
} else {
info_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (info_present) {
header_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
} else {
header_present = 0;
}
}
if (info_present) {
tmp = ixheaacd_read_bits_buf(it_bit_buff, SBR_AMPLITUDE_RESOLUTION_BITS +
ESBR_CROSS_OVER_BND_BITS +
ESBR_PRE_FLAT_BITS);
pstr_sbr_header->amp_res = (WORD16)(
(tmp & 0x0020) >> (ESBR_CROSS_OVER_BND_BITS + ESBR_PRE_FLAT_BITS));
pstr_sbr_header->xover_band =
(WORD16)((tmp & 0x001E) >> (ESBR_PRE_FLAT_BITS));
pstr_sbr_header->pre_proc_flag = (WORD16)((tmp & 0x001));
if (pstr_sbr_header->pvc_flag) {
pstr_sbr_header->pvc_mode =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PVC_MODE_BITS);
} else {
pstr_sbr_header->pvc_mode = 0;
}
}
if (header_present) {
use_dflt_hdr = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (use_dflt_hdr) {
pstr_sbr_header->start_freq = pstr_sbr_dflt_header->start_freq;
pstr_sbr_header->stop_freq = pstr_sbr_dflt_header->stop_freq;
pstr_sbr_header->header_extra_1 = pstr_sbr_dflt_header->header_extra_1;
pstr_sbr_header->header_extra_2 = pstr_sbr_dflt_header->header_extra_2;
pstr_sbr_header->freq_scale = pstr_sbr_dflt_header->freq_scale;
pstr_sbr_header->alter_scale = pstr_sbr_dflt_header->alter_scale;
pstr_sbr_header->noise_bands = pstr_sbr_dflt_header->noise_bands;
pstr_sbr_header->limiter_bands = pstr_sbr_dflt_header->limiter_bands;
pstr_sbr_header->limiter_gains = pstr_sbr_dflt_header->limiter_gains;
pstr_sbr_header->interpol_freq = pstr_sbr_dflt_header->interpol_freq;
pstr_sbr_header->smoothing_mode = pstr_sbr_dflt_header->smoothing_mode;
} else {
tmp = ixheaacd_read_bits_buf(
it_bit_buff, SBR_BEGIN_SAMP_FREQ_BITS + SBR_END_SAMP_FREQ_BITS +
SBR_HDR_EXTR_1_BITS + SBR_HDR_EXTR_2_BITS);
pstr_sbr_header->start_freq =
(tmp & 0x03C0) >> (SBR_END_SAMP_FREQ_BITS + SBR_HDR_EXTR_1_BITS +
SBR_HDR_EXTR_2_BITS);
pstr_sbr_header->stop_freq =
(tmp & 0x003C) >> (SBR_HDR_EXTR_1_BITS + SBR_HDR_EXTR_2_BITS);
pstr_sbr_header->header_extra_1 =
(tmp & 0x0002) >> (SBR_HDR_EXTR_2_BITS);
pstr_sbr_header->header_extra_2 = (tmp & 0x0001);
header_extra_1 = pstr_sbr_header->header_extra_1;
header_extra_2 = pstr_sbr_header->header_extra_2;
}
}
}
if (!use_dflt_hdr && header_present) {
if (header_extra_1) {
tmp = ixheaacd_read_bits_buf(
it_bit_buff,
SBR_SAMP_FREQ_LVL_BITS + SBR_CHANGE_LVL_BITS + SBR_NOISE_BND_BITS);
pstr_sbr_header->freq_scale =
(WORD16)((tmp & 0x018) >> (SBR_CHANGE_LVL_BITS + SBR_NOISE_BND_BITS));
pstr_sbr_header->alter_scale =
(WORD16)((tmp & 0x04) >> (SBR_NOISE_BND_BITS));
pstr_sbr_header->noise_bands = (WORD16)((tmp & 0x03));
} else {
pstr_sbr_header->freq_scale = SBR_SAMP_FEQ_LVL_DEF;
pstr_sbr_header->alter_scale = SBR_CHANGE_LVL_DEF;
pstr_sbr_header->noise_bands = SBR_NOISE_BND_DEF;
}
if (header_extra_2) {
tmp = ixheaacd_read_bits_buf(
it_bit_buff, SBR_BND_LIMIT_BITS + SBR_GAIN_LIMIT_BITS +
SBR_INTERPOL_SAMP_FREQ_BITS + SBR_SMOOTH_LEN_BITS);
pstr_sbr_header->limiter_bands = (WORD16)(
(tmp & 0x030) >> (SBR_GAIN_LIMIT_BITS + SBR_INTERPOL_SAMP_FREQ_BITS +
SBR_SMOOTH_LEN_BITS));
pstr_sbr_header->limiter_gains = (WORD16)(
(tmp & 0x0c) >> (SBR_INTERPOL_SAMP_FREQ_BITS + SBR_SMOOTH_LEN_BITS));
pstr_sbr_header->interpol_freq =
(WORD16)((tmp & 0x02) >> (SBR_SMOOTH_LEN_BITS));
pstr_sbr_header->smoothing_mode = (WORD16)((tmp & 0x01));
} else {
pstr_sbr_header->limiter_bands = SBR_BND_LIMIT_DEF;
pstr_sbr_header->limiter_gains = SBR_GAIN_LIMIT_DEF;
pstr_sbr_header->interpol_freq = SBR_INTERPOL_SAMP_FEQ_DEF;
pstr_sbr_header->smoothing_mode = SBR_SMOOTH_LEN_DEF;
}
}
if ((pstr_sbr_header->sync_state != SBR_ACTIVE) ||
(prev_header_info.start_freq != pstr_sbr_header->start_freq) ||
(prev_header_info.stop_freq != pstr_sbr_header->stop_freq) ||
(prev_header_info.xover_band != pstr_sbr_header->xover_band) ||
(prev_header_info.freq_scale != pstr_sbr_header->freq_scale) ||
(prev_header_info.alter_scale != pstr_sbr_header->alter_scale) ||
(prev_header_info.noise_bands != pstr_sbr_header->noise_bands)) {
return SBR_RESET;
}
return 0;
}
static VOID ixheaacd_sbr_sin_coding_data(
ia_sbr_header_data_struct *ptr_header_data,
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff) {
FLAG *p_add_harmonic = ptr_frame_data->add_harmonics;
WORD32 i;
i = ptr_header_data->pstr_freq_band_data->num_sf_bands[HIGH];
do {
*p_add_harmonic++ =
(FLAG)ixheaacd_read_bits_buf(it_bit_buff, SBR_ADD_SINE_FLAG_BITS);
i--;
} while (i != 0);
return;
}
static WORD16 ixheaacd_validate_frame_info(
ia_frame_info_struct *pstr_frame_info, WORD16 num_time_slots,
WORD audio_object_type) {
WORD32 i, j;
WORD32 start_pos, end_pos, transient_env, start_pos_noise, end_pos_noise,
num_env_sf, num_noise_env;
num_env_sf = pstr_frame_info->num_env;
num_noise_env = pstr_frame_info->num_noise_env;
if ((num_env_sf < 1) || (num_env_sf > MAX_ENVELOPES)) return 0;
if (num_noise_env > MAX_NOISE_ENVELOPES) return 0;
start_pos = pstr_frame_info->border_vec[0];
end_pos = pstr_frame_info->border_vec[num_env_sf];
transient_env = pstr_frame_info->transient_env;
if (transient_env > num_env_sf) return 0;
start_pos_noise = pstr_frame_info->noise_border_vec[0];
end_pos_noise = pstr_frame_info->noise_border_vec[num_noise_env];
if ((start_pos < 0) || (start_pos >= end_pos)) return 0;
if (start_pos > SBR_OV_SLOTS) return 0;
if (audio_object_type != AOT_ER_AAC_ELD &&
audio_object_type != AOT_ER_AAC_LD) {
if (end_pos < SBR_TIME_SLOTS) return 0;
} else {
if (end_pos < num_time_slots) return 0;
}
if (end_pos > add_d(SBR_TIME_SLOTS, SBR_OV_SLOTS)) return 0;
for (i = 0; i < num_env_sf; i++) {
if (pstr_frame_info->border_vec[i] > pstr_frame_info->border_vec[i + 1])
return 0;
}
if ((num_env_sf == 1) && (num_noise_env > 1)) return 0;
if ((start_pos != start_pos_noise) || (end_pos != end_pos_noise)) return 0;
for (i = 0; i < num_noise_env; i++) {
start_pos_noise = pstr_frame_info->noise_border_vec[i];
for (j = 0; j < num_env_sf; j++) {
if (pstr_frame_info->border_vec[j] == start_pos_noise) break;
}
if (j == num_env_sf) return 0;
}
return 1;
}
static WORD16 ixheaacd_read_extn_data(
ia_sbr_header_data_struct *ptr_header_data, ia_ps_dec_struct *ptr_ps_dec,
ia_bit_buf_struct *it_bit_buff, ia_ps_tables_struct *ps_tables_ptr) {
WORD i;
WORD extended_data;
WORD no_bits_left;
extended_data = ixheaacd_read_bits_buf(it_bit_buff, SBR_ENLARGED_DATA_BITS);
if (extended_data) {
WORD cnt;
FLAG ps_read;
ps_read = 0;
cnt = ixheaacd_read_bits_buf(it_bit_buff, SBR_CONT_SIZE_BITS);
if (cnt == ((1 << SBR_CONT_SIZE_BITS) - 1)) {
cnt = (cnt + ixheaacd_read_bits_buf(it_bit_buff, SBR_CONT_ESC_CNT_BITS));
}
no_bits_left = (cnt << 3);
while (no_bits_left > 7) {
WORD extension_id = ixheaacd_read_bits_buf(it_bit_buff, SBR_CONT_ID_BITS);
no_bits_left = (no_bits_left - SBR_CONT_ID_BITS);
switch (extension_id) {
case EXTENSION_ID_PS_CODING:
if (ptr_ps_dec == NULL) {
return 0;
}
if (!(ptr_ps_dec->force_mono || ps_read)) {
no_bits_left =
(no_bits_left - ixheaacd_read_ps_data(ptr_ps_dec, it_bit_buff,
(WORD16)no_bits_left,
ps_tables_ptr));
if (no_bits_left < 0) return 0;
ptr_header_data->channel_mode = PS_STEREO;
ps_read = 1;
break;
}
default:
cnt = (no_bits_left >> 3);
for (i = cnt - 1; i >= 0; i--) ixheaacd_read_bits_buf(it_bit_buff, 8);
no_bits_left = (no_bits_left - (cnt << 3));
break;
}
}
if (no_bits_left < 0) return 0;
ixheaacd_read_bits_buf(it_bit_buff, no_bits_left);
}
return 1;
}
WORD32 ixheaacd_sbr_read_pvc_sce(ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff,
WORD32 hbe_flag,
ia_pvc_data_struct *ptr_pvc_data,
ia_sbr_tables_struct *ptr_sbr_tables,
ia_sbr_header_data_struct *ptr_header_data) {
WORD32 i;
WORD32 err_code = 0;
ia_env_extr_tables_struct *env_extr_tables_ptr =
ptr_sbr_tables->env_extr_tables_ptr;
WORD32 usac_independency_flag = ptr_frame_data->usac_independency_flag;
if (hbe_flag) {
ptr_frame_data->sbr_patching_mode =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
if (ptr_frame_data->sbr_patching_mode == 0) {
ptr_frame_data->over_sampling_flag =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
ptr_frame_data->pitch_in_bins =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
else
ptr_frame_data->pitch_in_bins = 0;
} else {
ptr_frame_data->over_sampling_flag = ptr_frame_data->pitch_in_bins = 0;
}
}
err_code = ixheaacd_pvc_time_freq_grid_info(it_bit_buff, ptr_frame_data);
if (err_code) return err_code;
ptr_pvc_data->prev_sbr_mode = PVC_SBR;
ixheaacd_pvc_env_dtdf_data(ptr_frame_data, it_bit_buff);
for (i = 0; i < ptr_header_data->pstr_freq_band_data->num_nf_bands; i++) {
ptr_frame_data->sbr_invf_mode_prev[i] = ptr_frame_data->sbr_invf_mode[i];
ptr_frame_data->sbr_invf_mode[i] =
(WORD32)ixheaacd_read_bits_buf(it_bit_buff, ESBR_INVF_MODE_BITS);
}
ptr_pvc_data->pvc_mode = ptr_header_data->pvc_mode;
ixheaacd_read_esbr_pvc_envelope(ptr_pvc_data, it_bit_buff,
usac_independency_flag);
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data,
it_bit_buff, env_extr_tables_ptr);
memset(ptr_frame_data->add_harmonics, 0,
ptr_header_data->pstr_freq_band_data->num_sf_bands[HIGH] *
sizeof(WORD32));
ptr_frame_data->pvc_mode = ptr_header_data->pvc_mode;
ixheaacd_read_sbr_addi_data(ptr_frame_data, ptr_header_data, it_bit_buff);
ptr_frame_data->coupling_mode = COUPLING_OFF;
return 0;
}
WORD8 ixheaacd_sbr_read_sce(ia_sbr_header_data_struct *ptr_header_data,
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_ps_dec_struct *ptr_ps_dec,
ia_bit_buf_struct *it_bit_buff,
ia_sbr_tables_struct *ptr_sbr_tables,
WORD audio_object_type) {
WORD32 bit;
WORD32 i;
WORD32 hbe_flag = ptr_header_data->hbe_flag;
WORD32 num_if_bands = ptr_header_data->pstr_freq_band_data->num_if_bands;
WORD32 usac_flag = ptr_header_data->usac_flag;
ia_env_extr_tables_struct *env_extr_tables_ptr =
ptr_sbr_tables->env_extr_tables_ptr;
ptr_frame_data->coupling_mode = COUPLING_OFF;
if (!usac_flag) {
bit = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (bit) ixheaacd_read_bits_buf(it_bit_buff, SBR_SCE_RESERV_BITS);
if (audio_object_type == AOT_ER_AAC_ELD ||
audio_object_type == AOT_ER_AAC_LD) {
if (ptr_frame_data->eld_sbr_flag == 1) {
if (!ixheaacd_extract_frame_info_ld(it_bit_buff, ptr_frame_data))
return 0;
}
} else {
if (!ixheaacd_sbr_time_freq_grid_info(it_bit_buff, ptr_frame_data,
env_extr_tables_ptr))
return 0;
}
if (!ixheaacd_validate_frame_info(&ptr_frame_data->str_frame_info_details,
ptr_header_data->num_time_slots,
audio_object_type))
return 0;
} else {
if (hbe_flag) {
ptr_frame_data->sbr_patching_mode =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
if (ptr_frame_data->sbr_patching_mode == 0) {
ptr_frame_data->over_sampling_flag =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
ptr_frame_data->pitch_in_bins =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
else
ptr_frame_data->pitch_in_bins = 0;
} else {
ptr_frame_data->over_sampling_flag = ptr_frame_data->pitch_in_bins = 0;
}
}
ptr_frame_data->num_time_slots = ptr_header_data->num_time_slots;
if (!ixheaacd_sbr_time_freq_grid_info(it_bit_buff, ptr_frame_data,
env_extr_tables_ptr))
return 0;
if (!ixheaacd_validate_frame_info(&ptr_frame_data->str_frame_info_details,
ptr_header_data->num_time_slots,
audio_object_type))
return 0;
ptr_frame_data->prev_sbr_mode = ORIG_SBR;
}
ixheaacd_sbr_env_dtdf_data(ptr_frame_data, it_bit_buff,
ptr_header_data->usac_flag);
if (ptr_frame_data->del_cod_dir_arr[0] == DTDF_DIR_FREQ) {
ptr_header_data->err_flag = 0;
}
for (i = 0; i < num_if_bands; i++) {
ptr_frame_data->sbr_invf_mode_prev[i] = ptr_frame_data->sbr_invf_mode[i];
ptr_frame_data->sbr_invf_mode[i] =
(WORD32)ixheaacd_read_bits_buf(it_bit_buff, SBR_INVERSE_FILT_MODE_BITS);
}
if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data, it_bit_buff,
env_extr_tables_ptr, audio_object_type))
return 0;
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data,
it_bit_buff, env_extr_tables_ptr);
if (usac_flag) {
memset(
ptr_frame_data->add_harmonics, 0,
ptr_header_data->pstr_freq_band_data->num_sf_bands[1] * sizeof(WORD32));
ptr_frame_data->coupling_mode = COUPLING_OFF;
}
bit = (FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (bit) {
ixheaacd_sbr_sin_coding_data(ptr_header_data, ptr_frame_data, it_bit_buff);
} else {
memset(ptr_frame_data->add_harmonics, 0, sizeof(FLAG) * MAX_FREQ_COEFFS);
}
if (!usac_flag) {
ixheaacd_read_extn_data(ptr_header_data, ptr_ps_dec, it_bit_buff,
ptr_sbr_tables->ps_tables_ptr);
}
return 1;
}
WORD8 ixheaacd_sbr_read_cpe(ia_sbr_header_data_struct *ptr_header_data,
ia_sbr_frame_info_data_struct **ptr_frame_data,
ia_bit_buf_struct *it_bit_buff,
ia_sbr_tables_struct *ptr_sbr_tables,
WORD audio_object_type) {
WORD32 i, k, bit, num_ch = 2;
WORD32 num_if_bands = ptr_header_data->pstr_freq_band_data->num_if_bands;
WORD32 hbe_flag = ptr_header_data->hbe_flag;
WORD32 usac_flag = ptr_header_data->usac_flag;
ia_env_extr_tables_struct *env_extr_tables_ptr =
ptr_sbr_tables->env_extr_tables_ptr;
bit = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (usac_flag) {
if (bit) {
if (hbe_flag) {
ptr_frame_data[0]->sbr_patching_mode =
ptr_frame_data[1]->sbr_patching_mode =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
if (ptr_frame_data[0]->sbr_patching_mode == 0) {
ptr_frame_data[0]->over_sampling_flag =
ptr_frame_data[1]->over_sampling_flag = ixheaacd_read_bits_buf(
it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
ptr_frame_data[0]->pitch_in_bins =
ptr_frame_data[1]->pitch_in_bins =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
else
ptr_frame_data[0]->pitch_in_bins =
ptr_frame_data[1]->pitch_in_bins = 0;
} else {
ptr_frame_data[0]->over_sampling_flag = 0;
ptr_frame_data[1]->over_sampling_flag = 0;
ptr_frame_data[0]->pitch_in_bins = 0;
ptr_frame_data[1]->pitch_in_bins = 0;
}
}
ptr_frame_data[0]->coupling_mode = COUPLING_LEVEL;
ptr_frame_data[1]->coupling_mode = COUPLING_BAL;
} else {
if (hbe_flag) {
ptr_frame_data[0]->sbr_patching_mode =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
if (ptr_frame_data[0]->sbr_patching_mode == 0) {
ptr_frame_data[0]->over_sampling_flag =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
ptr_frame_data[0]->pitch_in_bins =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
else
ptr_frame_data[0]->pitch_in_bins = 0;
} else {
ptr_frame_data[0]->over_sampling_flag = 0;
ptr_frame_data[0]->pitch_in_bins = 0;
}
ptr_frame_data[1]->sbr_patching_mode =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PATCHING_MODE_BITS);
if (ptr_frame_data[1]->sbr_patching_mode == 0) {
ptr_frame_data[1]->over_sampling_flag =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_OVERSAMPLING_FLAG_BITS);
if (ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_FLAG_BITS))
ptr_frame_data[1]->pitch_in_bins =
ixheaacd_read_bits_buf(it_bit_buff, ESBR_PITCHIN_BINS_BITS);
else
ptr_frame_data[1]->pitch_in_bins = 0;
} else {
ptr_frame_data[1]->over_sampling_flag =
ptr_frame_data[1]->pitch_in_bins = 0;
}
}
ptr_frame_data[0]->coupling_mode = COUPLING_OFF;
ptr_frame_data[1]->coupling_mode = COUPLING_OFF;
}
} else {
if (bit) {
ixheaacd_read_bits_buf(it_bit_buff,
SBR_SCE_RESERV_BITS + SBR_SCE_RESERV_BITS);
}
if ((audio_object_type != AOT_ER_AAC_ELD) &&
(ptr_header_data->channel_mode != SBR_STEREO)) {
ptr_header_data->sync_state = UPSAMPLING;
return 0;
}
bit = ixheaacd_read_bits_buf(it_bit_buff, SBR_COUPLNG_MODE_BITS);
if (bit) {
ptr_frame_data[0]->coupling_mode = COUPLING_LEVEL;
ptr_frame_data[1]->coupling_mode = COUPLING_BAL;
} else {
ptr_frame_data[0]->coupling_mode = COUPLING_OFF;
ptr_frame_data[1]->coupling_mode = COUPLING_OFF;
}
}
for (i = 0; i < num_ch; i++) {
ptr_frame_data[i]->num_time_slots = ptr_header_data->num_time_slots;
if (audio_object_type == AOT_ER_AAC_ELD ||
audio_object_type == AOT_ER_AAC_LD) {
if (ptr_frame_data[i]->eld_sbr_flag == 1) {
if (!ixheaacd_extract_frame_info_ld(it_bit_buff, ptr_frame_data[i]))
return 0;
}
} else {
if (!ixheaacd_sbr_time_freq_grid_info(it_bit_buff, ptr_frame_data[i],
env_extr_tables_ptr))
return 0;
}
if (!ixheaacd_validate_frame_info(
&ptr_frame_data[i]->str_frame_info_details,
ptr_header_data->num_time_slots, audio_object_type))
return 0;
if (ptr_frame_data[0]->coupling_mode) {
memcpy(&ptr_frame_data[1]->str_frame_info_details,
&ptr_frame_data[0]->str_frame_info_details,
sizeof(ia_frame_info_struct));
if (audio_object_type == AOT_ER_AAC_ELD ||
audio_object_type == AOT_ER_AAC_LD) {
ptr_frame_data[1]->amp_res = ptr_frame_data[0]->amp_res;
}
num_ch = 1;
}
}
if (ptr_frame_data[0]->coupling_mode && usac_flag) {
ixheaacd_sbr_env_dtdf_data(ptr_frame_data[0], it_bit_buff,
ptr_header_data->usac_flag);
ixheaacd_sbr_env_dtdf_data(ptr_frame_data[1], it_bit_buff,
ptr_header_data->usac_flag);
for (i = 0; i < ptr_header_data->pstr_freq_band_data->num_if_bands; i++) {
ptr_frame_data[0]->sbr_invf_mode_prev[i] =
ptr_frame_data[0]->sbr_invf_mode[i];
ptr_frame_data[1]->sbr_invf_mode_prev[i] =
ptr_frame_data[1]->sbr_invf_mode[i];
ptr_frame_data[0]->sbr_invf_mode[i] =
(WORD32)ixheaacd_read_bits_buf(it_bit_buff, ESBR_INVF_MODE_BITS);
ptr_frame_data[1]->sbr_invf_mode[i] = ptr_frame_data[0]->sbr_invf_mode[i];
}
ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[0], it_bit_buff,
env_extr_tables_ptr, audio_object_type);
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[0],
it_bit_buff, env_extr_tables_ptr);
ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[1], it_bit_buff,
env_extr_tables_ptr, audio_object_type);
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[1],
it_bit_buff, env_extr_tables_ptr);
memset(
ptr_frame_data[0]->add_harmonics, 0,
ptr_header_data->pstr_freq_band_data->num_sf_bands[1] * sizeof(WORD32));
memset(
ptr_frame_data[1]->add_harmonics, 0,
ptr_header_data->pstr_freq_band_data->num_sf_bands[1] * sizeof(WORD32));
} else {
ixheaacd_sbr_env_dtdf_data(ptr_frame_data[0], it_bit_buff,
ptr_header_data->usac_flag);
ixheaacd_sbr_env_dtdf_data(ptr_frame_data[1], it_bit_buff,
ptr_header_data->usac_flag);
if ((ptr_frame_data[0]->del_cod_dir_arr[0] == DTDF_DIR_FREQ) &&
(ptr_frame_data[1]->del_cod_dir_arr[0] == DTDF_DIR_FREQ)) {
ptr_header_data->err_flag = 0;
}
for (k = 0; k < num_ch; k++) {
for (i = 0; i < num_if_bands; i++) {
ptr_frame_data[k]->sbr_invf_mode_prev[i] =
ptr_frame_data[k]->sbr_invf_mode[i];
ptr_frame_data[k]->sbr_invf_mode[i] = (WORD32)ixheaacd_read_bits_buf(
it_bit_buff, SBR_INVERSE_FILT_MODE_BITS);
}
}
if (ptr_frame_data[0]->coupling_mode) {
memcpy(ptr_frame_data[1]->sbr_invf_mode, ptr_frame_data[0]->sbr_invf_mode,
sizeof(WORD32) * num_if_bands);
if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[0],
it_bit_buff, env_extr_tables_ptr,
audio_object_type)) {
return 0;
}
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[0],
it_bit_buff, env_extr_tables_ptr);
if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[1],
it_bit_buff, env_extr_tables_ptr,
audio_object_type)) {
return 0;
}
} else {
if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[0],
it_bit_buff, env_extr_tables_ptr,
audio_object_type))
return 0;
if (!ixheaacd_read_sbr_env_data(ptr_header_data, ptr_frame_data[1],
it_bit_buff, env_extr_tables_ptr,
audio_object_type))
return 0;
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[0],
it_bit_buff, env_extr_tables_ptr);
}
ixheaacd_read_sbr_noise_floor_data(ptr_header_data, ptr_frame_data[1],
it_bit_buff, env_extr_tables_ptr);
}
bit = (FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (bit) {
ixheaacd_sbr_sin_coding_data(ptr_header_data, ptr_frame_data[0],
it_bit_buff);
} else {
memset(ptr_frame_data[0]->add_harmonics, 0, sizeof(FLAG) * MAX_FREQ_COEFFS);
}
bit = (FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (bit) {
ixheaacd_sbr_sin_coding_data(ptr_header_data, ptr_frame_data[1],
it_bit_buff);
} else {
memset(ptr_frame_data[1]->add_harmonics, 0, sizeof(FLAG) * MAX_FREQ_COEFFS);
}
if (!usac_flag) {
ixheaacd_read_extn_data(ptr_header_data, NULL, it_bit_buff,
ptr_sbr_tables->ps_tables_ptr);
}
return 1;
}
VOID ixheaacd_sbr_env_dtdf_data(ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff,
WORD32 usac_flag) {
WORD32 i;
WORD32 num_env = ptr_frame_data->str_frame_info_details.num_env;
WORD32 num_noise_env = ptr_frame_data->str_frame_info_details.num_noise_env;
WORD16 *p_coding_dir_vec = ptr_frame_data->del_cod_dir_arr;
WORD16 *p_coding_dir_noise_vec = ptr_frame_data->del_cod_dir_noise_arr;
WORD32 usac_independency_flag = ptr_frame_data->usac_independency_flag;
if (usac_flag) {
if (usac_independency_flag) {
*p_coding_dir_vec = 0;
p_coding_dir_vec++;
} else {
*p_coding_dir_vec =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
p_coding_dir_vec++;
}
for (i = num_env - 1; i >= 1; i--) {
*p_coding_dir_vec++ =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
}
if (usac_independency_flag) {
*p_coding_dir_noise_vec = 0;
p_coding_dir_noise_vec++;
} else {
*p_coding_dir_noise_vec =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
p_coding_dir_noise_vec++;
}
for (i = num_noise_env - 1; i >= 1; i--) {
*p_coding_dir_noise_vec++ =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
}
} else {
for (i = num_env - 1; i >= 0; i--) {
*p_coding_dir_vec++ =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
}
for (i = num_noise_env - 1; i >= 0; i--) {
*p_coding_dir_noise_vec++ =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, SBR_DEL_COD_DIR_BITS);
}
}
}
VOID ixheaacd_read_env_data(ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff,
ia_huffman_data_type hcb_t,
ia_huffman_data_type hcb_f, WORD32 *idx_t,
WORD32 *idx_f, WORD16 *no_band, WORD32 num_env,
WORD32 env_data_tbl_comp_factor, WORD32 start_bits,
WORD32 start_bits_balance, WORD32 num_noise_env,
WORD32 lav, WORD32 usac_flag) {
WORD32 j, i, ixheaacd_drc_offset = 0,
coupling_mode = ptr_frame_data->coupling_mode, delta, bits,
shift;
WORD16 *p_coding_dir_vec, *p_sbr_sf;
WORD16 index, length;
WORD32 readword;
FLOAT32 *p_sbr_sf_float;
if (num_noise_env) {
p_coding_dir_vec = ptr_frame_data->del_cod_dir_noise_arr;
p_sbr_sf = ptr_frame_data->int_noise_floor;
p_sbr_sf_float = ptr_frame_data->flt_noise_floor;
} else {
p_coding_dir_vec = ptr_frame_data->del_cod_dir_arr;
p_sbr_sf = ptr_frame_data->int_env_sf_arr;
p_sbr_sf_float = ptr_frame_data->flt_env_sf_arr;
}
if (coupling_mode == COUPLING_BAL) {
bits = start_bits_balance;
shift = env_data_tbl_comp_factor;
} else {
bits = start_bits;
shift = 0;
}
for (j = 0; j < num_env; j++) {
ia_huffman_data_type h;
const WORD32 *idx_tab;
WORD32 dtdf_dir_flag = p_coding_dir_vec[j];
if (dtdf_dir_flag == DTDF_DIR_FREQ) {
p_sbr_sf[ixheaacd_drc_offset] =
(WORD16)(ixheaacd_read_bits_buf(it_bit_buff, bits) << shift);
p_sbr_sf_float[ixheaacd_drc_offset] = p_sbr_sf[ixheaacd_drc_offset];
h = hcb_f;
idx_tab = idx_f;
} else {
h = hcb_t;
idx_tab = idx_t;
}
for (i = (1 - dtdf_dir_flag); i < no_band[j]; i++) {
readword = ixheaacd_show_bits_buf(it_bit_buff, 20);
ixheaacd_huffman_decode(readword << 12, &index, &length,
(const UWORD16 *)h, (const UWORD32 *)idx_tab);
delta = index - lav;
ixheaacd_read_bits_buf(it_bit_buff, length);
p_sbr_sf[ixheaacd_drc_offset + i] =
(WORD16)(delta << env_data_tbl_comp_factor);
p_sbr_sf_float[ixheaacd_drc_offset + i] =
p_sbr_sf[ixheaacd_drc_offset + i];
}
if (usac_flag && (num_noise_env == 0)) {
ptr_frame_data->inter_temp_shape_mode[j] = 0;
if (ptr_frame_data->inter_tes_flag) {
WORD32 flag = (WORD32)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (flag) {
ptr_frame_data->inter_temp_shape_mode[j] =
(WORD32)ixheaacd_read_bits_buf(it_bit_buff, 2);
}
}
}
ixheaacd_drc_offset += (no_band[j]);
}
}
VOID ixheaacd_read_sbr_noise_floor_data(
ia_sbr_header_data_struct *ptr_header_data,
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff,
ia_env_extr_tables_struct *env_extr_tables_ptr) {
WORD32 i;
WORD32 coupling_mode;
WORD16 num_noise_bands[MAX_NOISE_ENVELOPES];
ia_huffman_data_type hcb_noise_env;
ia_huffman_data_type hcb_noise;
WORD32 *idx_noise_env;
WORD32 *idx_noise;
WORD32 lav;
WORD32 env_data_tbl_comp_factor;
WORD32 start_bits;
WORD32 start_bits_balance;
WORD32 num_noise_env = ptr_frame_data->str_frame_info_details.num_noise_env;
for (i = 0; i < num_noise_env; i++)
num_noise_bands[i] = ptr_header_data->pstr_freq_band_data->num_nf_bands;
start_bits = SBR_BEGIN_NOISE_BITS_AMPLITUDE_RESOLUTION_3_0;
start_bits_balance = SBR_BEGIN_NOISE_BITS_BALNCE_AMPLITUDE_RESOLUTION_3_0;
coupling_mode = ptr_frame_data->coupling_mode;
if (coupling_mode == COUPLING_BAL) {
lav = 12;
hcb_noise = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_t_huffman_noise_bal_3_0db_inp_table;
idx_noise =
env_extr_tables_ptr->ixheaacd_t_huffman_noise_bal_3_0db_idx_table;
hcb_noise_env = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_f_huffman_env_bal_3_0db_inp_table;
idx_noise_env =
env_extr_tables_ptr->ixheaacd_f_huffman_env_bal_3_0db_idx_table;
env_data_tbl_comp_factor = 1;
} else {
lav = 31;
hcb_noise = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_t_huffman_noise_3_0db_inp_table;
idx_noise = env_extr_tables_ptr->ixheaacd_t_huffman_noise_3_0db_idx_table;
hcb_noise_env = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_f_huffman_env_3_0db_inp_table;
idx_noise_env = env_extr_tables_ptr->ixheaacd_f_huffman_env_3_0db_idx_table;
env_data_tbl_comp_factor = 0;
}
ixheaacd_read_env_data(ptr_frame_data, it_bit_buff, hcb_noise, hcb_noise_env,
idx_noise, idx_noise_env, &num_noise_bands[0],
num_noise_env, env_data_tbl_comp_factor, start_bits,
start_bits_balance, 1, lav,
ptr_header_data->usac_flag);
}
WORD16 ixheaacd_read_sbr_env_data(
ia_sbr_header_data_struct *ptr_header_data,
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_bit_buf_struct *it_bit_buff,
ia_env_extr_tables_struct *env_extr_tables_ptr, WORD audio_object_type) {
WORD32 coupling_mode = ptr_frame_data->coupling_mode;
WORD32 *idx_t, *idx_f;
WORD32 lav;
WORD32 i;
WORD16 no_band[MAX_ENVELOPES];
WORD32 delta;
WORD32 amp_res, num_env, env_data_tbl_comp_factor, start_bits,
start_bits_balance;
WORD16 *p_freq_res = ptr_frame_data->str_frame_info_details.freq_res;
WORD16 *p_num_sf_bands = ptr_header_data->pstr_freq_band_data->num_sf_bands;
ia_huffman_data_type hcb_t, hcb_f;
delta = 0;
amp_res = ptr_header_data->amp_res;
num_env = ptr_frame_data->str_frame_info_details.num_env;
ptr_frame_data->num_env_sfac = 0;
if ((ptr_frame_data->str_frame_info_details.frame_class == FIXFIX) &&
(num_env == 1)) {
if (audio_object_type != AOT_ER_AAC_ELD &&
audio_object_type != AOT_ER_AAC_LD) {
amp_res = SBR_AMPLITUDE_RESOLUTION_1_5;
} else {
amp_res = ptr_frame_data->amp_res;
}
}
ptr_frame_data->amp_res = amp_res;
if (amp_res == SBR_AMPLITUDE_RESOLUTION_3_0) {
start_bits = SBR_BEGIN_ENVN_BITS_AMPLITUDE_RESOLUTION_3_0;
start_bits_balance = SBR_BEGIN_ENVN_BITS_BALNCE_AMPLITUDE_RESOLUTION_3_0;
} else {
start_bits = SBR_BEGIN_ENVN_BITS_AMPLITUDE_RESOLUTION_1_5;
start_bits_balance = SBR_BEGIN_ENVN_BITS_BALNCE_AMPLITUDE_RESOLUTION_1_5;
}
for (i = 0; i < num_env; i++) {
no_band[i] = p_num_sf_bands[*p_freq_res++];
ptr_frame_data->num_env_sfac =
ixheaacd_add16(ptr_frame_data->num_env_sfac, no_band[i]);
}
if (ptr_frame_data->num_env_sfac > MAX_NUM_ENVELOPE_VALUES) return 0;
if (coupling_mode == COUPLING_BAL) {
env_data_tbl_comp_factor = 1;
if (amp_res == SBR_AMPLITUDE_RESOLUTION_1_5) {
lav = 24;
hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_t_huffman_env_bal_1_5db_inp_table;
idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_bal_1_5db_idx_table;
hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_f_huffman_env_bal_1_5db_inp_table;
idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_bal_1_5db_idx_table;
} else {
lav = 12;
hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_t_huffman_env_bal_3_0db_inp_table;
idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_bal_3_0db_idx_table;
hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_f_huffman_env_bal_3_0db_inp_table;
idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_bal_3_0db_idx_table;
}
} else {
env_data_tbl_comp_factor = 0;
if (amp_res == SBR_AMPLITUDE_RESOLUTION_1_5) {
lav = 60;
hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_t_huffman_env_1_5db_inp_table;
idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_1_5db_idx_table;
hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_f_huffman_env_1_5db_inp_table;
idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_1_5db_idx_table;
} else {
lav = 31;
hcb_t = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_t_huffman_env_3_0db_inp_table;
idx_t = env_extr_tables_ptr->ixheaacd_t_huffman_env_3_0db_idx_table;
hcb_f = (ia_huffman_data_type)&env_extr_tables_ptr
->ixheaacd_f_huffman_env_3_0db_inp_table;
idx_f = env_extr_tables_ptr->ixheaacd_f_huffman_env_3_0db_idx_table;
}
}
ixheaacd_read_env_data(ptr_frame_data, it_bit_buff, hcb_t, hcb_f, idx_t,
idx_f, &no_band[0], num_env, env_data_tbl_comp_factor,
start_bits, start_bits_balance, 0, lav,
ptr_header_data->usac_flag);
return 1;
}
int ixheaacd_extract_frame_info_ld(
ia_bit_buf_struct *it_bit_buff,
ia_sbr_frame_info_data_struct *h_frame_data) {
int abs_bord_lead = 0, num_rel_lead = 0, num_rel_trail = 0, bs_num_env = 0,
frame_class, temp, env, k, abs_bord_trail = 0, middle_bord = 0,
bs_num_noise, transient_env_temp = 0, bs_transient_position = 0;
WORD16 time_border[MAX_ENVELOPES + 1];
WORD16 time_border_noise[2 + 1];
WORD16 f[MAX_ENVELOPES + 1];
int rel_bord_lead[3];
int rel_bord_trail[3] = {0};
ia_frame_info_struct *v_frame_info = &h_frame_data->str_frame_info_details;
int numTimeSlots = h_frame_data->num_time_slots;
v_frame_info->frame_class = frame_class =
ixheaacd_read_bits_buf(it_bit_buff, SBRLD_CLA_BITS);
switch (frame_class) {
case FIXFIX:
temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_ENV_BITS);
bs_num_env = 1 << temp;
if (bs_num_env == 1)
h_frame_data->amp_res =
ixheaacd_read_bits_buf(it_bit_buff, SBR_AMPLITUDE_RESOLUTION_BITS);
f[0] = ixheaacd_read_bits_buf(it_bit_buff, SBR_RES_BITS);
for (env = 1; env < bs_num_env; env++) f[env] = f[0];
break;
case LD_TRAN:
bs_transient_position =
ixheaacd_read_bits_buf(it_bit_buff, SBR_TRAN_BITS);
v_frame_info->frame_class = 0;
bs_num_env = (numTimeSlots == 16)
? ixheaacd_ld_env_table_512[bs_transient_position]
[SBR_ENVT_NUMENV]
: ixheaacd_ld_env_table_480[bs_transient_position]
[SBR_ENVT_NUMENV];
for (env = 0; env < bs_num_env; env++)
f[env] = ixheaacd_read_bits_buf(it_bit_buff, SBR_RES_BITS);
break;
}
switch (frame_class) {
case FIXFIX:
abs_bord_lead = 0;
abs_bord_trail = numTimeSlots;
num_rel_lead = bs_num_env - 1;
num_rel_trail = 0;
for (k = 0; k < num_rel_lead; k++) {
rel_bord_lead[k] = ixheaacd_ld_env_table_time_slot[num_rel_lead - 1];
}
time_border[0] = abs_bord_lead;
time_border[bs_num_env] = abs_bord_trail;
for (env = 1; env <= num_rel_lead; env++) {
time_border[env] = abs_bord_lead;
for (k = 0; k <= env - 1; k++) time_border[env] += rel_bord_lead[k];
}
for (env = num_rel_lead + 1; env < bs_num_env; env++) {
time_border[env] = abs_bord_trail;
for (k = 0; k <= bs_num_env - env - 1; k++)
time_border[env] -= rel_bord_trail[k];
}
break;
case LD_TRAN:
time_border[0] = 0;
time_border[bs_num_env] = numTimeSlots;
for (k = 1; k < bs_num_env; k++)
time_border[k] =
(numTimeSlots == 16)
? ixheaacd_ld_env_table_512[bs_transient_position][k]
: ixheaacd_ld_env_table_480[bs_transient_position][k];
break;
default:
time_border[0] = 0;
break;
};
switch (frame_class) {
case FIXFIX:
middle_bord = bs_num_env / 2;
break;
case LD_TRAN:
middle_bord = 1;
break;
};
time_border_noise[0] = time_border[0];
if (bs_num_env > 1) {
time_border_noise[1] = time_border[middle_bord];
time_border_noise[2] = time_border[bs_num_env];
bs_num_noise = 2;
} else {
time_border_noise[1] = time_border[bs_num_env];
bs_num_noise = 1;
}
switch (frame_class) {
case FIXFIX:
transient_env_temp = -1;
break;
case LD_TRAN:
transient_env_temp =
(numTimeSlots == 16)
? ixheaacd_ld_env_table_512[bs_transient_position]
[SBR_ENVT_TRANIDX]
: ixheaacd_ld_env_table_480[bs_transient_position]
[SBR_ENVT_TRANIDX];
break;
};
v_frame_info->num_env = bs_num_env;
memcpy(v_frame_info->border_vec, time_border,
(bs_num_env + 1) * sizeof(WORD16));
memcpy(v_frame_info->freq_res, f, bs_num_env * sizeof(WORD16));
v_frame_info->transient_env = transient_env_temp;
v_frame_info->num_noise_env = bs_num_noise;
memcpy(v_frame_info->noise_border_vec, time_border_noise,
(bs_num_noise + 1) * sizeof(WORD16));
return 1;
}
WORD32 ixheaacd_pvc_time_freq_grid_info(
ia_bit_buf_struct *it_bit_buff,
ia_sbr_frame_info_data_struct *ptr_frame_data) {
WORD32 bs_num_env = 0, bs_num_noise = 0;
WORD32 time_border[MAX_ENVELOPES + 1];
WORD32 time_border_noise[2 + 1];
WORD32 pvc_time_border[MAX_ENVELOPES + 1];
WORD32 pvc_time_border_noise[2 + 1];
WORD32 bs_freq_res[MAX_ENVELOPES + 1];
WORD32 var_len;
ia_frame_info_struct *p_frame_info = &ptr_frame_data->str_frame_info_details;
ia_frame_info_struct *pvc_frame_info = &ptr_frame_data->str_pvc_frame_info;
WORD32 i;
WORD32 prev_sbr_mode = ptr_frame_data->prev_sbr_mode;
WORD32 tmp;
WORD32 bs_noise_pos;
bs_noise_pos = ixheaacd_read_bits_buf(it_bit_buff, 4);
tmp = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (tmp == 0) {
ptr_frame_data->var_len = 0;
} else {
tmp = ixheaacd_read_bits_buf(it_bit_buff, 2);
ptr_frame_data->var_len = tmp + 1;
}
var_len = ptr_frame_data->var_len;
if (p_frame_info->num_env > 0) {
time_border[0] = p_frame_info->border_vec[p_frame_info->num_env] - 16;
} else {
time_border[0] = 0;
}
if (time_border[0] < 0) return -1;
pvc_time_border[0] = 0;
bs_freq_res[0] = 0;
if (bs_noise_pos == 0) {
time_border[1] = 16 + var_len;
pvc_time_border[1] = 16;
bs_num_noise = 1;
bs_num_env = 1;
} else {
time_border[1] = bs_noise_pos;
pvc_time_border[1] = bs_noise_pos;
time_border[2] = 16 + var_len;
pvc_time_border[2] = 16;
bs_freq_res[1] = 0;
bs_num_noise = 2;
bs_num_env = 2;
}
for (i = 0; i < 3; i++) {
time_border_noise[i] = time_border[i];
pvc_time_border_noise[i] = pvc_time_border[i];
}
if (prev_sbr_mode == ORIG_SBR) {
pvc_time_border[0] = time_border[0];
pvc_time_border_noise[0] = time_border[0];
}
pvc_frame_info->num_env = bs_num_env;
for (i = 0; i < (bs_num_env + 1); i++) {
pvc_frame_info->border_vec[i] = pvc_time_border[i];
}
for (i = 0; i < (bs_num_env); i++) {
pvc_frame_info->freq_res[i] = bs_freq_res[i];
}
pvc_frame_info->transient_env = -1;
pvc_frame_info->num_noise_env = bs_num_noise;
for (i = 0; i < (bs_num_noise + 1); i++) {
pvc_frame_info->noise_border_vec[i] = pvc_time_border_noise[i];
}
p_frame_info->num_env = bs_num_env;
for (i = 0; i < (bs_num_env + 1); i++) {
p_frame_info->border_vec[i] = time_border[i];
}
for (i = 0; i < (bs_num_env); i++) {
p_frame_info->freq_res[i] = bs_freq_res[i];
}
p_frame_info->transient_env = -1;
p_frame_info->num_noise_env = bs_num_noise;
for (i = 0; i < (bs_num_noise + 1); i++) {
p_frame_info->noise_border_vec[i] = time_border_noise[i];
}
return 0;
}
WORD16 ixheaacd_sbr_time_freq_grid_info(
ia_bit_buf_struct *it_bit_buff,
ia_sbr_frame_info_data_struct *ptr_frame_data,
ia_env_extr_tables_struct *env_extr_tables_ptr) {
WORD32 i, k, bs_num_rel = 0;
WORD32 bs_pointer_bits = 0, bs_num_env = 0, border, bs_pointer,
bs_var_bord = 0, temp = 0;
WORD32 freq_res_0 = 0, frame_class;
WORD32 abs_bord_lead, abs_bord_trail, num_rel_trail, num_rel_lead;
WORD32 pointer_bits_array[7] = {1, 2, 2, 3, 3, 3, 3};
ia_frame_info_struct *p_fixfix_tab;
ia_frame_info_struct *p_frame_info = &ptr_frame_data->str_frame_info_details;
frame_class = ixheaacd_read_bits_buf(it_bit_buff, SBR_FRAME_CLASS_BITS);
p_frame_info->frame_class = frame_class;
switch (frame_class) {
case FIXFIX:
temp =
ixheaacd_read_bits_buf(it_bit_buff, SBR_ENV_BITS + SBR_FRQ_RES_BITS);
bs_num_env = (temp & 0x6) >> SBR_FRQ_RES_BITS;
p_fixfix_tab = &env_extr_tables_ptr->sbr_frame_info1_2_4_16[bs_num_env];
memcpy(p_frame_info, p_fixfix_tab, sizeof(ia_frame_info_struct));
bs_num_env = (1 << bs_num_env);
freq_res_0 = temp & 0x1;
if (!freq_res_0) {
memset(&p_frame_info->freq_res[0], 0, sizeof(WORD16) * bs_num_env);
}
break;
case FIXVAR:
bs_var_bord =
ixheaacd_read_bits_buf(it_bit_buff, SBR_VAR_BORD_BITS + SBR_NUM_BITS);
bs_num_rel = bs_var_bord & 3;
bs_var_bord = bs_var_bord >> SBR_NUM_BITS;
bs_num_env = bs_num_rel + 1;
p_frame_info->border_vec[0] = 0;
border = bs_var_bord + SBR_TIME_SLOTS;
p_frame_info->border_vec[bs_num_env] = border;
for (k = bs_num_rel; k > 0; k--) {
temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
border = border - ((temp << 1) + 2);
if (border < 0) border = 0;
p_frame_info->border_vec[k] = border;
}
bs_pointer_bits = pointer_bits_array[bs_num_rel];
bs_pointer = ixheaacd_read_bits_buf(it_bit_buff, bs_pointer_bits);
if ((bs_pointer - (bs_num_rel + 1)) > 0) return 0;
for (k = bs_num_rel; k >= 0; k--) {
p_frame_info->freq_res[k] =
ixheaacd_read_bits_buf(it_bit_buff, SBR_FRQ_RES_BITS);
}
if (bs_pointer) {
p_frame_info->transient_env = bs_num_env + 1 - bs_pointer;
} else {
p_frame_info->transient_env = -1;
}
if ((bs_pointer == 0) || (bs_pointer == 1))
p_frame_info->noise_border_vec[1] =
p_frame_info->border_vec[bs_num_rel];
else
p_frame_info->noise_border_vec[1] =
p_frame_info->border_vec[p_frame_info->transient_env];
break;
case VARFIX:
bs_var_bord =
ixheaacd_read_bits_buf(it_bit_buff, SBR_VAR_BORD_BITS + SBR_NUM_BITS);
bs_num_rel = bs_var_bord & 3;
bs_var_bord = bs_var_bord >> SBR_NUM_BITS;
bs_num_env = bs_num_rel + 1;
border = bs_var_bord;
p_frame_info->border_vec[0] = border;
for (k = 1; k <= bs_num_rel; k++) {
temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
border = border + ((temp << 1) + 2);
if (border > SBR_TIME_SLOTS) border = SBR_TIME_SLOTS;
p_frame_info->border_vec[k] = border;
}
p_frame_info->border_vec[k] = SBR_TIME_SLOTS;
bs_pointer_bits = pointer_bits_array[bs_num_rel];
bs_pointer = ixheaacd_read_bits_buf(it_bit_buff, bs_pointer_bits);
if ((bs_pointer - (bs_num_rel + 1)) > 0) return 0;
if (bs_pointer == 0 || (bs_pointer - 1) == 0) {
p_frame_info->transient_env = -1;
} else {
p_frame_info->transient_env = bs_pointer - 1;
}
for (k = 0; k <= bs_num_rel; k++) {
p_frame_info->freq_res[k] =
ixheaacd_read_bits_buf(it_bit_buff, SBR_FRQ_RES_BITS);
}
switch (bs_pointer) {
case 0:
p_frame_info->noise_border_vec[1] = p_frame_info->border_vec[1];
break;
case 1:
p_frame_info->noise_border_vec[1] =
p_frame_info->border_vec[bs_num_rel];
break;
default:
p_frame_info->noise_border_vec[1] =
p_frame_info->border_vec[(WORD32)p_frame_info->transient_env];
break;
}
break;
case VARVAR:
abs_bord_lead = ixheaacd_read_bits_buf(
it_bit_buff, 2 * SBR_VAR_BORD_BITS + 2 * SBR_NUM_BITS);
abs_bord_trail =
(((abs_bord_lead & 0x30) >> (2 * SBR_NUM_BITS)) + SBR_TIME_SLOTS);
num_rel_trail = ((abs_bord_lead & 0xc) >> SBR_NUM_BITS);
num_rel_lead = (abs_bord_lead & 0x3);
abs_bord_lead = abs_bord_lead >> (SBR_VAR_BORD_BITS + 2 * SBR_NUM_BITS);
bs_num_env = ((num_rel_trail + num_rel_lead) + 1);
border = abs_bord_lead;
p_frame_info->border_vec[0] = border;
for (k = 1; k <= num_rel_trail; k++) {
temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
border = border + ((temp << 1) + 2);
p_frame_info->border_vec[k] = border;
}
border = abs_bord_trail;
i = bs_num_env;
p_frame_info->border_vec[i] = border;
for (k = 0; k < num_rel_lead; k++) {
temp = ixheaacd_read_bits_buf(it_bit_buff, SBR_REL_BITS);
border = border - ((temp << 1) + 2);
i--;
p_frame_info->border_vec[i] = border;
}
bs_pointer_bits = pointer_bits_array[num_rel_trail + num_rel_lead];
bs_pointer = ixheaacd_read_bits_buf(it_bit_buff, bs_pointer_bits);
if ((bs_pointer - ((num_rel_trail + num_rel_lead) + 1)) > 0) return 0;
if (bs_pointer) {
p_frame_info->transient_env = bs_num_env + 1 - bs_pointer;
} else {
p_frame_info->transient_env = -1;
}
for (k = 0; k < bs_num_env; k++) {
p_frame_info->freq_res[k] =
ixheaacd_read_bits_buf(it_bit_buff, SBR_FRQ_RES_BITS);
}
p_frame_info->noise_border_vec[0] = abs_bord_lead;
if (bs_num_env == 1) {
p_frame_info->noise_border_vec[1] = abs_bord_trail;
} else {
if (bs_pointer == 0 || (bs_pointer - 1) == 0)
p_frame_info->noise_border_vec[1] =
p_frame_info->border_vec[bs_num_env - 1];
else
p_frame_info->noise_border_vec[1] =
p_frame_info->border_vec[(WORD32)p_frame_info->transient_env];
p_frame_info->noise_border_vec[2] = abs_bord_trail;
}
break;
}
p_frame_info->num_env = bs_num_env;
if (bs_num_env == 1)
p_frame_info->num_noise_env = 1;
else
p_frame_info->num_noise_env = 2;
if (frame_class == VARFIX || frame_class == FIXVAR) {
p_frame_info->noise_border_vec[0] = p_frame_info->border_vec[0];
p_frame_info->noise_border_vec[p_frame_info->num_noise_env] =
p_frame_info->border_vec[bs_num_env];
}
return 1;
}