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android13/external/libxaac/decoder/ixheaacd_channel.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.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_error_codes.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_aac_rom.h"
#include "ixheaacd_pulsedata.h"
#include "ixheaacd_pns.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_lt_predict.h"
#include "ixheaacd_channelinfo.h"
#include "ixheaacd_cnst.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_block.h"
#include "ixheaacd_channel.h"
#include "ixheaacd_common_rom.h"
#include "ixheaacd_basic_funcs.h"
#include "ixheaacd_basic_op.h"
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_stereo.h"
#include "ixheaacd_tns.h"
#include "ixheaacd_audioobjtypes.h"
#include "ixheaacd_latmdemux.h"
#include "ixheaacd_aacdec.h"
#include "ixheaacd_definitions.h"
#include "ixheaacd_error_codes.h"
#include "ixheaacd_pulsedata.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_sbr_scale.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_sbr_rom.h"
#include "ixheaacd_audioobjtypes.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_memory_standards.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_config.h"
#include "ixheaacd_mps_dec.h"
#include "ixheaacd_struct_def.h"
#include "ixheaacd_adts_crc_check.h"
#include "ixheaacd_rvlc.h"
#include "ixheaacd_hcr.h"
#include "ixheaacd_function_selector.h"
#define SPEC(ptr, w, gl) ((ptr) + ((w) * (gl)))
UWORD32 ixheaacd_aac_showbits_32(UWORD8 *ptr_read_next, WORD32 cnt_bits,
WORD32 *increment) {
UWORD8 *v = ptr_read_next;
UWORD32 b = 0;
WORD32 i;
WORD32 bumped = 0;
for (i = 0; i < 4; i++) {
b = b << 8;
if (cnt_bits > 0) {
b = b | *v;
v++;
bumped++;
}
cnt_bits -= 8;
}
if (increment != NULL) {
*increment = bumped;
}
return b;
}
WORD16 *ixheaacd_getscalefactorbandoffsets(
ia_ics_info_struct *ptr_ics_info,
ia_aac_dec_tables_struct *ptr_aac_tables) {
if (ptr_ics_info->window_sequence != EIGHT_SHORT_SEQUENCE) {
return ptr_aac_tables->sfb_long_table;
} else {
return ptr_aac_tables->sfb_short_table;
}
}
WORD8 *ixheaacd_getscalefactorbandwidth(
ia_ics_info_struct *ptr_ics_info,
ia_aac_dec_tables_struct *ptr_aac_tables) {
if (ptr_ics_info->frame_length == 512) {
return (
WORD8 *)(&ptr_aac_tables
->scale_fac_bands_512[ptr_ics_info->sampling_rate_index]
[0]);
} else {
return (
WORD8 *)(&ptr_aac_tables
->scale_fac_bands_480[ptr_ics_info->sampling_rate_index]
[0]);
}
}
WORD32 ixheaacd_cblock_inv_quant_spect_data(
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info,
ia_aac_dec_tables_struct *ptr_aac_tables);
void ixheaacd_cblock_scale_spect_data(
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info,
ia_aac_dec_tables_struct *ptr_aac_tables, WORD32 total_channels,
WORD32 object_type, WORD32 aac_sf_data_resil_flag) {
int grp_win, group = 0;
WORD32 *ptr_spect_coeff = ptr_aac_dec_channel_info->ptr_spec_coeff;
WORD8 *ptr_sfb_width = (WORD8 *)(ixheaacd_getscalefactorbandwidth(
&(ptr_aac_dec_channel_info->str_ics_info), ptr_aac_tables));
int max_band;
WORD16 *ptr_scale_fac = ptr_aac_dec_channel_info->ptr_scale_factor;
WORD tot_bands = ptr_aac_dec_channel_info->str_ics_info.max_sfb;
WORD tot_groups = ptr_aac_dec_channel_info->str_ics_info.num_window_groups;
WORD32 *scale_table_ptr = ptr_aac_tables->pstr_block_tables->scale_table;
max_band = ptr_aac_dec_channel_info->str_ics_info.max_sfb;
do {
grp_win =
ptr_aac_dec_channel_info->str_ics_info.window_group_length[group++];
do {
(*ixheaacd_scale_factor_process)(&ptr_spect_coeff[0], &ptr_scale_fac[0],
tot_bands, (WORD8 *)ptr_sfb_width,
scale_table_ptr, total_channels,
object_type, aac_sf_data_resil_flag);
ptr_spect_coeff += 128;
grp_win--;
} while (grp_win != 0);
ptr_scale_fac += 16;
tot_groups--;
} while (tot_groups != 0);
}
WORD32 ixheaacd_read_pulse_data(ia_bit_buf_struct *it_bit_buff,
ia_pulse_info_struct *ptr_pulse_info,
ia_aac_dec_tables_struct *ptr_aac_tables) {
WORD32 i, total_offset;
WORD32 error_code = 0;
WORD32 value = ixheaacd_read_bits_buf(it_bit_buff, 8);
ptr_pulse_info->number_pulse = value >> 6;
ptr_pulse_info->pulse_start_band = value & 0x3F;
if (ptr_pulse_info->pulse_start_band >= 52) {
return (WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_PULSEDATA_ERROR;
}
total_offset = ptr_aac_tables->str_aac_sfb_info[0]
.sfb_index[ptr_pulse_info->pulse_start_band];
for (i = 0; i < ptr_pulse_info->number_pulse + 1; i++) {
WORD32 value = ixheaacd_read_bits_buf(it_bit_buff, 9);
ptr_pulse_info->pulse_offset[i] = value >> 4;
ptr_pulse_info->pulse_amp[i] = value & 0xF;
total_offset += ptr_pulse_info->pulse_offset[i];
if (total_offset >= 1024) {
error_code = (WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_PULSEDATA_ERROR;
}
}
return error_code;
}
static IA_ERRORCODE ixheaacd_read_block_data(
ia_bit_buf_struct *it_bit_buff,
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info,
ia_aac_dec_tables_struct *ptr_aac_tables, WORD32 total_channels,
WORD32 frame_size, WORD32 object_type, WORD32 aac_spect_data_resil_flag,
WORD32 aac_sect_data_resil_flag, WORD32 aac_sf_data_resil_flag,
WORD32 ele_type, ia_aac_dec_overlap_info *ptr_aac_dec_static_channel_info)
{
FLAG gain_control_data_present;
WORD16 error_code = AAC_DEC_OK;
if (ptr_aac_dec_channel_info->str_ics_info.window_sequence ==
EIGHT_SHORT_SEQUENCE) {
memset(ptr_aac_dec_channel_info->ptr_scale_factor, 0,
MAX_WINDOWS * MAX_SCALE_FACTOR_BANDS_SHORT * 3);
}
error_code = ixheaacd_read_section_data(
it_bit_buff, ptr_aac_dec_channel_info, aac_spect_data_resil_flag,
aac_sect_data_resil_flag, ptr_aac_tables);
if (error_code) {
return error_code;
}
if (aac_sf_data_resil_flag &&
((object_type == AOT_ER_AAC_ELD) || (object_type == AOT_ER_AAC_LD)))
ixheaacd_rvlc_read(it_bit_buff, ptr_aac_dec_channel_info);
else
ixheaacd_read_scale_factor_data(it_bit_buff, ptr_aac_dec_channel_info,
ptr_aac_tables, object_type);
error_code = 0;
if (object_type != AOT_ER_AAC_ELD) {
ptr_aac_dec_channel_info->str_pulse_info.pulse_data_present =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (ptr_aac_dec_channel_info->str_pulse_info.pulse_data_present) {
error_code = ixheaacd_read_pulse_data(
it_bit_buff, &ptr_aac_dec_channel_info->str_pulse_info,
ptr_aac_tables);
}
if (error_code) {
return error_code;
}
}
ptr_aac_dec_channel_info->str_tns_info.tns_data_present =
(FLAG)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (object_type < ER_OBJECT_START) {
error_code = 0;
if (ptr_aac_dec_channel_info->str_tns_info.tns_data_present) {
error_code =
ixheaacd_read_tns_data(it_bit_buff, ptr_aac_dec_channel_info);
}
if (error_code) {
return error_code;
}
}
if (object_type != AOT_ER_AAC_ELD) {
gain_control_data_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (gain_control_data_present) {
return (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_GAIN_CONTROL_DATA_PRESENT);
}
}
if (object_type == AOT_ER_AAC_ELD) {
if (ptr_aac_dec_channel_info->str_tns_info.tns_data_present)
error_code =
ixheaacd_read_tns_data(it_bit_buff, ptr_aac_dec_channel_info);
if (error_code) return error_code;
}
if (aac_spect_data_resil_flag &&
((object_type == AOT_ER_AAC_ELD) || (object_type == AOT_ER_AAC_LD)))
ixheaacd_hcr_read(it_bit_buff, ptr_aac_dec_channel_info, ele_type);
if (aac_sf_data_resil_flag &&
((object_type == AOT_ER_AAC_ELD) || (object_type == AOT_ER_AAC_LD))) {
error_code = ixheaacd_rvlc_dec(
ptr_aac_dec_channel_info, ptr_aac_dec_static_channel_info, it_bit_buff);
if (error_code) return error_code;
it_bit_buff->bit_pos = 7 - it_bit_buff->bit_pos;
}
if (object_type == AOT_ER_AAC_LD) {
if (ptr_aac_dec_channel_info->str_tns_info.tns_data_present)
error_code =
ixheaacd_read_tns_data(it_bit_buff, ptr_aac_dec_channel_info);
if (error_code) return error_code;
}
{ it_bit_buff->bit_pos = 7 - it_bit_buff->bit_pos; }
error_code = ixheaacd_read_spectral_data(
it_bit_buff, ptr_aac_dec_channel_info, ptr_aac_tables, total_channels,
frame_size, object_type, aac_spect_data_resil_flag,
aac_sf_data_resil_flag);
it_bit_buff->bit_pos = (7 - it_bit_buff->bit_pos);
return error_code;
}
IA_ERRORCODE ixheaacd_ltp_decode(ia_bit_buf_struct *it_bit_buff,
ia_ics_info_struct *ptr_ics_info,
WORD32 object_type, WORD32 frame_size,
WORD32 ch) {
IA_ERRORCODE retval = AAC_DEC_OK;
if (ptr_ics_info->predictor_data_present) {
if (ch == 0) {
ixheaacd_init_ltp_object(&(ptr_ics_info->ltp));
ptr_ics_info->ltp.data_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (ptr_ics_info->ltp.data_present) {
if ((retval = ixheaacd_ltp_data(object_type, ptr_ics_info,
&(ptr_ics_info->ltp), it_bit_buff,
frame_size)) > 0) {
return retval;
}
}
} else {
ixheaacd_init_ltp_object(&(ptr_ics_info->ltp2));
ptr_ics_info->ltp2.data_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (ptr_ics_info->ltp2.data_present) {
if ((retval = ixheaacd_ltp_data(object_type, ptr_ics_info,
&(ptr_ics_info->ltp2), it_bit_buff,
frame_size)) > 0) {
return retval;
}
}
}
}
return retval;
}
WORD16 ixheaacd_ics_read(ia_bit_buf_struct *it_bit_buff,
ia_ics_info_struct *ptr_ics_info,
WORD8 num_swb_window[2], WORD32 object_type,
WORD32 common_window, WORD32 frame_size) {
WORD i;
WORD mask;
WORD value = 0;
if (object_type == AOT_ER_AAC_ELD) {
ptr_ics_info->window_sequence = 0;
ptr_ics_info->window_shape = 1;
} else {
if (object_type != AOT_ER_AAC_LD) {
ptr_ics_info->frame_length = 1024;
}
value = ixheaacd_read_bits_buf(it_bit_buff, 4);
ptr_ics_info->window_sequence = (WORD16)((value & 0x6) >> 1);
ptr_ics_info->window_shape = (WORD16)((value & 0x1));
}
if (ptr_ics_info->window_sequence != EIGHT_SHORT_SEQUENCE) {
ptr_ics_info->num_swb_window = num_swb_window[0];
ptr_ics_info->num_window_groups = 1;
ptr_ics_info->window_group_length[0] = 1;
if (object_type == AOT_ER_AAC_ELD) {
ptr_ics_info->max_sfb = ixheaacd_read_bits_buf(it_bit_buff, 6);
if (ptr_ics_info->max_sfb == 0) ptr_ics_info->num_swb_window = 0;
} else {
value = ixheaacd_read_bits_buf(it_bit_buff, 7);
ptr_ics_info->max_sfb = (value & 0x7E) >> 1;
}
if ((object_type != AOT_ER_AAC_LD) && (object_type != AOT_AAC_LTP)) {
if (value & 1) {
return (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_PREDICTION_DATA_PRESENT);
}
} else {
ptr_ics_info->predictor_data_present = value & 1;
if (ptr_ics_info->predictor_data_present) {
WORD32 retval = AAC_DEC_OK;
ixheaacd_init_ltp_object(&(ptr_ics_info->ltp));
if (object_type < ER_OBJECT_START) {
if ((ptr_ics_info->ltp.data_present =
ixheaacd_read_bits_buf(it_bit_buff, 1)) &
1) {
if ((retval = ixheaacd_ltp_data(object_type, ptr_ics_info,
&(ptr_ics_info->ltp), it_bit_buff,
frame_size)) > 0) {
return retval;
}
}
if (common_window) {
ixheaacd_init_ltp_object(&(ptr_ics_info->ltp2));
if ((ptr_ics_info->ltp2.data_present =
ixheaacd_read_bits_buf(it_bit_buff, 1)) &
1) {
if ((retval = ixheaacd_ltp_data(object_type, ptr_ics_info,
&(ptr_ics_info->ltp2),
it_bit_buff, frame_size)) > 0) {
return retval;
}
}
}
}
if ((object_type == AOT_ER_AAC_ELD) || (object_type == AOT_ER_AAC_LD)) {
if (!common_window && (object_type >= ER_OBJECT_START)) {
if ((ptr_ics_info->ltp.data_present =
ixheaacd_read_bits_buf(it_bit_buff, 1)) &
1) {
if ((retval = ixheaacd_ltp_data(object_type, ptr_ics_info,
&(ptr_ics_info->ltp), it_bit_buff,
frame_size)) < 0) {
return retval;
}
}
}
}
}
}
} else {
WORD32 num_groups = 0, scale_factor_grouping;
ptr_ics_info->num_swb_window = num_swb_window[1];
value = ixheaacd_read_bits_buf(it_bit_buff, 11);
ptr_ics_info->max_sfb = (value & 0x780) >> 7;
scale_factor_grouping = (value & 0x7F);
mask = 0x40;
for (i = 0; i < 7; i++) {
ptr_ics_info->window_group_length[i] = 1;
if (scale_factor_grouping & mask) {
ptr_ics_info->window_group_length[num_groups] =
ptr_ics_info->window_group_length[num_groups] + 1;
} else {
num_groups = num_groups + 1;
}
mask = mask >> 1;
}
ptr_ics_info->window_group_length[7] = 1;
ptr_ics_info->num_window_groups = num_groups + 1;
}
if (ptr_ics_info->max_sfb > ptr_ics_info->num_swb_window) {
return (WORD16)IA_ENHAACPLUS_DEC_EXE_NONFATAL_EXCEEDS_SFB_TRANSMITTED;
}
return AAC_DEC_OK;
}
WORD16 ixheaacd_individual_ch_stream(
ia_bit_buf_struct *it_bit_buff, ia_aac_decoder_struct *aac_dec_handle,
WORD32 num_ch, WORD32 frame_size, WORD32 total_channels, WORD32 object_type,
ia_eld_specific_config_struct eld_specific_config, WORD32 ele_type) {
WORD16 error_code = AAC_DEC_OK;
WORD32 ch;
WORD32 crc_reg = 0;
for (ch = 0; ch < num_ch; ch++) {
ia_aac_dec_channel_info_struct *ptr_aac_dec_ch_info =
aac_dec_handle->pstr_aac_dec_ch_info[ch];
ia_ics_info_struct *ptr_ics_info = &ptr_aac_dec_ch_info->str_ics_info;
if (ch == 1) {
if (it_bit_buff->pstr_adts_crc_info->crc_active == 1 &&
(it_bit_buff->pstr_adts_crc_info->no_reg < 7)) {
crc_reg =
ixheaacd_adts_crc_start_reg(it_bit_buff->pstr_adts_crc_info,
it_bit_buff, CRC_ADTS_RAW_IIND_ICS);
}
}
ptr_aac_dec_ch_info->global_gain =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, 8);
if (!(aac_dec_handle->pstr_aac_dec_ch_info[LEFT]->common_window)) {
error_code = ixheaacd_ics_read(
it_bit_buff, ptr_ics_info, aac_dec_handle->num_swb_window,
object_type,
aac_dec_handle->pstr_aac_dec_ch_info[LEFT]->common_window,
aac_dec_handle->samples_per_frame);
if (ch == 1)
aac_dec_handle->pstr_aac_dec_ch_info[ch - 1]->str_ics_info.ltp2.lag =
ptr_ics_info->ltp.lag;
if (error_code) {
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
return error_code;
}
}
error_code = ixheaacd_read_block_data(
it_bit_buff, ptr_aac_dec_ch_info, aac_dec_handle->pstr_aac_tables,
total_channels, frame_size, object_type,
eld_specific_config.aac_spect_data_resil_flag,
eld_specific_config.aac_sect_data_resil_flag,
eld_specific_config.aac_sf_data_resil_flag, ele_type,
aac_dec_handle->pstr_aac_dec_overlap_info[ch]);
if (error_code) {
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
return error_code;
}
if (ch == 0) {
if ((object_type == AOT_ER_AAC_LD) &&
(aac_dec_handle->pstr_aac_dec_ch_info[LEFT]->common_window) &&
(ele_type == ID_CPE)) {
IA_ERRORCODE temp =
ixheaacd_ltp_decode(it_bit_buff, ptr_ics_info, object_type,
aac_dec_handle->samples_per_frame, 1);
if (temp != 0) {
return temp;
}
aac_dec_handle->pstr_aac_dec_ch_info[ch + 1]->str_ics_info.ltp.lag =
ptr_ics_info->ltp2.lag;
}
}
if (ch == 1) {
if (it_bit_buff->pstr_adts_crc_info->crc_active == 1) {
ixheaacd_adts_crc_end_reg(it_bit_buff->pstr_adts_crc_info, it_bit_buff,
crc_reg);
}
}
}
return error_code;
}
VOID ixheaacd_read_ms_data(
ia_bit_buf_struct *it_bit_buff,
ia_aac_dec_channel_info_struct *ptr_aac_dec_ch_info) {
WORD32 num_win_group, sfb;
WORD32 ms_mask_present;
UWORD8 *ptr_ms_used = &ptr_aac_dec_ch_info->pstr_stereo_info->ms_used[0][0];
WORD32 num_window_groups =
ptr_aac_dec_ch_info->str_ics_info.num_window_groups;
WORD16 max_sfb = ptr_aac_dec_ch_info->str_ics_info.max_sfb;
ms_mask_present = ixheaacd_read_bits_buf(it_bit_buff, 2);
if (ms_mask_present < 1) {
memset(ptr_ms_used, 0,
sizeof(UWORD8) * JOINT_STEREO_MAX_BANDS * JOINT_STEREO_MAX_GROUPS);
}
else if (ms_mask_present == 1) {
for (num_win_group = 0; num_win_group < num_window_groups;
num_win_group++) {
for (sfb = 0; sfb < max_sfb; sfb++) {
ptr_aac_dec_ch_info->pstr_stereo_info->ms_used[num_win_group][sfb] =
(UWORD8)ixheaacd_read_bits_buf(it_bit_buff, 1);
}
}
} else {
for (num_win_group = 0; num_win_group < num_window_groups;
num_win_group++) {
ptr_ms_used =
&ptr_aac_dec_ch_info->pstr_stereo_info->ms_used[num_win_group][0];
memset(ptr_ms_used, 1, (max_sfb) * sizeof(UWORD8));
}
}
}
IA_ERRORCODE ixheaacd_channel_pair_process(
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info[], WORD32 num_ch,
ia_aac_dec_tables_struct *ptr_aac_tables, WORD32 total_channels,
WORD32 object_type, WORD32 aac_spect_data_resil_flag,
WORD32 aac_sf_data_resil_flag, WORD32 *in_data, WORD32 *out_data,
void *self_ptr) {
WORD32 channel;
IA_ERRORCODE err = IA_NO_ERROR;
ia_aac_decoder_struct *self = self_ptr;
if (aac_spect_data_resil_flag &&
((object_type == AOT_ER_AAC_LD) || (object_type == AOT_ER_AAC_ELD))) {
for (channel = 0; channel < num_ch; channel++) {
err = ixheaacd_cblock_inv_quant_spect_data(
ptr_aac_dec_channel_info[channel], ptr_aac_tables);
if (err) return err;
ixheaacd_cblock_scale_spect_data(ptr_aac_dec_channel_info[channel],
ptr_aac_tables, num_ch, object_type,
aac_sf_data_resil_flag);
}
}
if (num_ch > 1) {
if (ptr_aac_dec_channel_info[LEFT]->common_window) {
if (ptr_aac_dec_channel_info[LEFT]->str_pns_info.pns_active ||
ptr_aac_dec_channel_info[RIGHT]->str_pns_info.pns_active) {
ixheaacd_map_ms_mask_pns(ptr_aac_dec_channel_info);
}
ixheaacd_ms_stereo_process(ptr_aac_dec_channel_info, ptr_aac_tables);
}
ixheaacd_intensity_stereo_process(ptr_aac_dec_channel_info, ptr_aac_tables,
object_type, aac_sf_data_resil_flag);
}
for (channel = 0; channel < num_ch; channel++) {
WORD32 *p_spectrum = ptr_aac_dec_channel_info[channel]->ptr_spec_coeff;
if (total_channels > 2) {
if (ptr_aac_dec_channel_info[channel]->str_ics_info.window_sequence !=
EIGHT_SHORT_SEQUENCE) {
WORD16 *band_offsets = ptr_aac_tables->sfb_long_table;
WORD32 no_spec_coeff = band_offsets[ptr_aac_dec_channel_info[channel]
->str_ics_info.max_sfb];
ixheaacd_right_shift_block(p_spectrum, no_spec_coeff, 3);
} else {
ixheaacd_right_shift_block(p_spectrum, 1024, 3);
}
}
ixheaacd_pns_process(ptr_aac_dec_channel_info, channel, ptr_aac_tables);
if ((object_type == AOT_ER_AAC_LD) || (object_type == AOT_AAC_LTP)) {
{
if (channel == 0) {
ltp_info *ltp1 =
&(ptr_aac_dec_channel_info[channel]->str_ics_info.ltp);
ixheaacd_lt_prediction(ptr_aac_dec_channel_info[channel], ltp1,
p_spectrum, ptr_aac_tables,
self->ptr_aac_dec_static_channel_info[LEFT]
->overlap_add_data.win_shape,
self->sampling_rate_index, object_type,
self->samples_per_frame, in_data, out_data);
} else {
ltp_info *ltp2 =
(self->pstr_aac_dec_ch_info[0]->common_window)
? &(ptr_aac_dec_channel_info[0]->str_ics_info.ltp2)
:
&(ptr_aac_dec_channel_info[1]->str_ics_info.ltp);
ixheaacd_lt_prediction(ptr_aac_dec_channel_info[channel], ltp2,
p_spectrum, ptr_aac_tables,
self->ptr_aac_dec_static_channel_info[RIGHT]
->overlap_add_data.win_shape,
self->sampling_rate_index, object_type,
self->samples_per_frame, in_data, out_data);
}
}
}
if (ptr_aac_dec_channel_info[channel]->str_tns_info.tns_data_present) {
ixheaacd_aac_tns_process(ptr_aac_dec_channel_info[channel],
total_channels, ptr_aac_tables, object_type, 1,
NULL);
}
}
return err;
}
VOID ixheaacd_set_corr_info(
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info, WORD16 pns_band) {
ia_pns_correlation_info_struct *ptr_corr_info =
ptr_aac_dec_channel_info->pstr_pns_corr_info;
ptr_corr_info->correlated[(pns_band >> PNS_BAND_FLAGS_SHIFT)] |=
(1 << (pns_band & PNS_BAND_FLAGS_MASK));
}
VOID ixheaacd_map_ms_mask_pns(
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info[CHANNELS]) {
WORD32 num_win_group, sfb;
for (num_win_group = 0;
num_win_group <
ptr_aac_dec_channel_info[LEFT]->str_ics_info.num_window_groups;
num_win_group++) {
for (sfb = 0; sfb < ptr_aac_dec_channel_info[LEFT]->str_ics_info.max_sfb;
sfb++) {
if (ptr_aac_dec_channel_info[LEFT]
->pstr_stereo_info->ms_used[num_win_group][sfb]) {
WORD16 pns_band = (num_win_group << 4) + sfb;
ixheaacd_set_corr_info(ptr_aac_dec_channel_info[LEFT], pns_band);
if (ptr_aac_dec_channel_info[LEFT]->str_pns_info.pns_used[pns_band] &&
ptr_aac_dec_channel_info[RIGHT]->str_pns_info.pns_used[pns_band]) {
ptr_aac_dec_channel_info[LEFT]
->pstr_stereo_info->ms_used[num_win_group][sfb] ^= 1;
}
}
}
}
}
VOID ixheaacd_pulse_data_apply(ia_pulse_info_struct *ptr_pulse_info,
WORD8 *pulse_scratch,
const WORD16 *ptr_swb_offset, WORD object_type) {
WORD i;
WORD32 k;
memset(pulse_scratch, 0, sizeof(WORD32) * 256);
if (object_type != AOT_ER_AAC_ELD) {
if (ptr_pulse_info->pulse_data_present) {
k = ptr_swb_offset[ptr_pulse_info->pulse_start_band];
for (i = 0; i <= ptr_pulse_info->number_pulse; i++) {
k = k + ptr_pulse_info->pulse_offset[i];
pulse_scratch[k] = ptr_pulse_info->pulse_amp[i];
}
}
} else {
ptr_pulse_info->pulse_data_present = 0;
}
}
IA_ERRORCODE ixheaacd_read_spectral_data(
ia_bit_buf_struct *it_bit_buff,
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info,
ia_aac_dec_tables_struct *ptr_aac_tables, WORD32 total_channels,
WORD32 frame_size, WORD32 object_type, WORD32 aac_spect_data_resil_flag,
WORD32 aac_sf_data_resil_flag) {
WORD sfb, max_sfb;
WORD num_win_grp, group_len, grp_offset;
WORD index;
WORD8 *ptr_code_book, *ptr_code_book_no;
WORD16 *ptr_scale_factor;
WORD32 *ptr_spec_coef;
ia_ics_info_struct *ptr_ics_info = &ptr_aac_dec_channel_info->str_ics_info;
WORD16 *swb_offset;
WORD32 *ptr_spec_coef_out;
ptr_code_book = ptr_aac_dec_channel_info->ptr_code_book;
ptr_scale_factor = ptr_aac_dec_channel_info->ptr_scale_factor;
ptr_spec_coef = ptr_aac_dec_channel_info->ptr_spec_coeff;
max_sfb = ptr_ics_info->max_sfb;
swb_offset =
ptr_aac_tables->str_aac_sfb_info[ptr_ics_info->window_sequence].sfb_index;
if (!aac_spect_data_resil_flag) {
if (ptr_aac_dec_channel_info->str_ics_info.window_sequence !=
EIGHT_SHORT_SEQUENCE) {
WORD8 *ptr_scratch;
if (object_type == AOT_ER_AAC_ELD)
ptr_scratch = (WORD8 *)ptr_aac_dec_channel_info->pulse_scratch;
else
ptr_scratch = (WORD8 *)ptr_aac_dec_channel_info->scratch_buf_ptr;
memset(ptr_spec_coef, 0, sizeof(WORD32) * 1024);
ixheaacd_pulse_data_apply(&ptr_aac_dec_channel_info->str_pulse_info,
ptr_scratch, swb_offset, object_type);
ptr_spec_coef_out = &ptr_spec_coef[0];
for (sfb = 0; sfb < max_sfb;) {
WORD ret_val;
WORD32 sfb_width;
WORD32 sect_cb = ptr_code_book[sfb];
WORD start = sfb;
if ((object_type == AOT_ER_AAC_ELD) || (object_type == AOT_ER_AAC_LD)) {
if ((sect_cb >= 16) && (sect_cb <= 31)) {
ptr_code_book[sfb] = sect_cb = 11;
}
}
for (; sfb < max_sfb && (ptr_code_book[sfb] == sect_cb); sfb++)
;
sfb_width = swb_offset[sfb] - swb_offset[start];
if (sect_cb > ZERO_HCB && (sect_cb < NOISE_HCB)) {
ret_val = ixheaacd_huffman_dec_word2(it_bit_buff, sect_cb, sfb_width,
ptr_aac_tables,
ptr_spec_coef_out, ptr_scratch);
if (ret_val != 0) {
return (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_EXCEEDS_MAX_HUFFDEC_VAL);
}
}
else {
if (ptr_aac_dec_channel_info->str_pulse_info.pulse_data_present) {
ixheaacd_inverse_quantize(
ptr_spec_coef_out, sfb_width,
(WORD32 *)
ptr_aac_tables->pstr_block_tables->ixheaacd_pow_table_Q13,
ptr_scratch);
}
}
ptr_scratch += sfb_width;
ptr_spec_coef_out += sfb_width;
}
if ((object_type != AOT_ER_AAC_ELD) && (object_type != AOT_ER_AAC_LD))
index = 1024 - swb_offset[max_sfb];
else
index = frame_size - swb_offset[max_sfb];
if (index < 0) return -1;
} else {
memset(ptr_spec_coef, 0, sizeof(WORD32) * 1024);
grp_offset = 0;
for (num_win_grp = 0; num_win_grp < ptr_ics_info->num_window_groups;
num_win_grp++) {
WORD grp_len = ptr_ics_info->window_group_length[num_win_grp];
ptr_code_book_no =
&ptr_code_book[num_win_grp * MAX_SCALE_FACTOR_BANDS_SHORT];
ptr_spec_coef_out = &ptr_spec_coef[grp_offset * MAX_BINS_SHORT];
for (sfb = 0; sfb < max_sfb;) {
WORD sect_cb = *ptr_code_book_no;
WORD start = sfb;
WORD ret_val;
for (; sfb < max_sfb && (*ptr_code_book_no == sect_cb);
sfb++, ptr_code_book_no++)
;
if (sect_cb > ZERO_HCB && (sect_cb < NOISE_HCB)) {
ret_val = ixheaacd_decode_huffman(
it_bit_buff, sect_cb, ptr_spec_coef_out, (WORD16 *)swb_offset,
start, sfb, grp_len, ptr_aac_tables);
if (ret_val != 0) {
return (WORD16)(
(WORD32)
IA_ENHAACPLUS_DEC_EXE_NONFATAL_EXCEEDS_MAX_HUFFDEC_VAL);
}
}
}
grp_offset = (grp_offset + grp_len);
}
}
{
WORD32 *ptr_scale_table = ptr_aac_tables->pstr_block_tables->scale_table;
WORD8 *ptr_sfb_width =
ptr_aac_tables->str_aac_sfb_info[ptr_ics_info->window_sequence]
.sfb_width;
for (num_win_grp = 0; num_win_grp < ptr_ics_info->num_window_groups;
num_win_grp++) {
for (group_len = 0;
group_len < ptr_ics_info->window_group_length[num_win_grp];
group_len++) {
(*ixheaacd_scale_factor_process)(
&ptr_spec_coef[0], &ptr_scale_factor[0], max_sfb,
(WORD8 *)ptr_sfb_width, ptr_scale_table, total_channels,
object_type, aac_sf_data_resil_flag);
ptr_spec_coef += MAX_BINS_SHORT;
}
ptr_scale_factor += MAX_SCALE_FACTOR_BANDS_SHORT;
}
}
} else {
ia_hcr_info_struct *pstr_hcr_info = &ptr_aac_dec_channel_info->str_hcr_info;
WORD32 error = 0;
memset(ptr_spec_coef, 0, sizeof(WORD32) * 1024);
if (ptr_aac_dec_channel_info->reorder_spect_data_len != 0) {
error = ixheaacd_huff_code_reorder_init(
pstr_hcr_info, ptr_aac_dec_channel_info, ptr_aac_tables, it_bit_buff);
if (error != 0) {
return IA_ENHAACPLUS_DEC_EXE_NONFATAL_DECODE_FRAME_ERROR;
}
error = ixheaacd_hcr_decoder(pstr_hcr_info, ptr_aac_dec_channel_info,
ptr_aac_tables, it_bit_buff);
if (error != 0) {
ixheaacd_huff_mute_erroneous_lines(pstr_hcr_info);
}
if (it_bit_buff->cnt_bits <
ptr_aac_dec_channel_info->reorder_spect_data_len) {
longjmp(*(it_bit_buff->xaac_jmp_buf),
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
it_bit_buff->cnt_bits +=
-ptr_aac_dec_channel_info->reorder_spect_data_len;
it_bit_buff->ptr_read_next =
it_bit_buff->ptr_bit_buf_base +
((it_bit_buff->size - it_bit_buff->cnt_bits) >> 3);
it_bit_buff->bit_pos = (it_bit_buff->size - it_bit_buff->cnt_bits) & 7;
} else {
it_bit_buff->ptr_read_next =
it_bit_buff->ptr_bit_buf_base +
((it_bit_buff->size - it_bit_buff->cnt_bits) >> 3);
it_bit_buff->bit_pos = (it_bit_buff->size - it_bit_buff->cnt_bits) & 7;
}
}
return AAC_DEC_OK;
}
WORD16 ixheaacd_read_tns_data(
ia_bit_buf_struct *it_bit_buff,
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info) {
WORD win_size, window_per_frame;
WORD n_filt_bits, start_band_bits, order_bits;
WORD32 bottom;
ia_ics_info_struct *ptr_ics_info = &ptr_aac_dec_channel_info->str_ics_info;
ia_tns_info_aac_struct *ptr_tns_info =
&ptr_aac_dec_channel_info->str_tns_info;
if (ptr_ics_info->window_sequence != EIGHT_SHORT_SEQUENCE) {
n_filt_bits = 2;
start_band_bits = 6;
order_bits = 5;
window_per_frame = 1;
} else {
n_filt_bits = 1;
start_band_bits = 4;
order_bits = 3;
window_per_frame = 8;
}
bottom = ptr_ics_info->num_swb_window;
for (win_size = 0; win_size < window_per_frame; win_size++) {
WORD n_filt;
WORD start_band, coef_res;
ptr_tns_info->n_filt[win_size] = n_filt =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, n_filt_bits);
if (n_filt) {
WORD filt;
WORD top;
coef_res = ixheaacd_read_bits_buf(it_bit_buff, 1);
top = bottom;
for (filt = 0; filt < n_filt; filt++) {
WORD order;
ia_filter_info_struct *filter =
&ptr_tns_info->str_filter[win_size][filt];
start_band = ixheaacd_read_bits_buf(it_bit_buff, start_band_bits);
if (top < start_band) {
top = start_band;
}
filter->start_band = top - start_band;
filter->stop_band = top;
top = filter->start_band;
if (filter->start_band < 0) {
filter->order = -1;
return (WORD16)((WORD32)IA_ENHAACPLUS_DEC_EXE_FATAL_TNS_RANGE_ERROR);
}
filter->order = order = ixheaacd_read_bits_buf(it_bit_buff, order_bits);
if ((order - MAX_ORDER_LONG) > 0) {
return (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_TNS_ORDER_ERROR);
}
if (order) {
WORD i;
WORD32 coef, coef_compress;
WORD resolution, shift;
filter->direction =
(WORD8)(ixheaacd_read_bits_buf(it_bit_buff, 1) ? -1 : 1);
coef_compress = ixheaacd_read_bits_buf(it_bit_buff, 1);
filter->resolution = coef_res;
resolution = coef_res + 3 - coef_compress;
shift = 32 - resolution;
for (i = 0; i < order; i++) {
coef = ixheaacd_read_bits_buf(it_bit_buff, resolution);
coef = coef << shift;
filter->coef[i] = (WORD8)(coef >> shift);
}
}
}
}
}
return AAC_DEC_OK;
}
WORD32 ixheaacd_inv_quant(WORD32 *px_quant, WORD32 *ixheaacd_pow_table_Q13)
{
WORD32 q1;
WORD32 temp;
WORD32 q_abs;
WORD16 interp;
WORD32 shift;
q_abs = *px_quant;
if (q_abs > (8191 + 32))
return IA_ENHAACPLUS_DEC_EXE_NONFATAL_EXCEEDS_MAX_HUFFDEC_VAL;
if (q_abs < 1024) {
shift = 3;
} else {
shift = 6;
}
q1 = (q_abs) >> shift;
interp = q_abs - (q1 << shift);
temp = ixheaacd_pow_table_Q13[q1 + 1] - ixheaacd_pow_table_Q13[q1];
temp = (WORD32)(temp * (WORD32)interp);
temp = temp + (ixheaacd_pow_table_Q13[q1] << shift);
if (shift == 3)
temp = temp << 1;
else
temp = temp << 2;
*px_quant = temp;
return 0;
}
void ixheaacd_scale_value_in_place(WORD32 *value, WORD32 scalefactor) {
WORD32 newscale;
if ((newscale = (scalefactor)) >= 0) {
*(value) <<= newscale;
} else {
*(value) >>= -newscale;
}
}
WORD32 ixheaacd_cblock_inv_quant_spect_data(
ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info,
ia_aac_dec_tables_struct *ptr_aac_tables) {
int window, group, grp_win, band;
IA_ERRORCODE err = IA_NO_ERROR;
int sf_bands_transmitted = ptr_aac_dec_channel_info->str_ics_info.max_sfb;
WORD8 *ptr_code_book = ptr_aac_dec_channel_info->ptr_code_book;
const WORD16 *band_offsets = (WORD16 *)ixheaacd_getscalefactorbandoffsets(
&(ptr_aac_dec_channel_info->str_ics_info), ptr_aac_tables);
WORD32 *ptr_pow_table_Q13 =
(WORD32 *)ptr_aac_tables->pstr_block_tables->ixheaacd_pow_table_Q13;
for (window = 0, group = 0;
group < ptr_aac_dec_channel_info->str_ics_info.num_window_groups;
group++) {
for (grp_win = 0;
grp_win <
ptr_aac_dec_channel_info->str_ics_info.window_group_length[group];
grp_win++, window++) {
for (band = 0; band < sf_bands_transmitted; band++) {
WORD32 *ptr_spec_coef =
SPEC(ptr_aac_dec_channel_info->ptr_spec_coeff, window,
ptr_aac_dec_channel_info->granule_len) +
band_offsets[band];
int num_lines = band_offsets[band + 1] - band_offsets[band];
int bnds = group * 16 + band;
int i;
if ((ptr_code_book[bnds] == ZERO_HCB) ||
(ptr_code_book[bnds] == INTENSITY_HCB) ||
(ptr_code_book[bnds] == INTENSITY_HCB2))
continue;
if (ptr_code_book[bnds] == NOISE_HCB) {
continue;
}
for (i = 0; i < num_lines; i++) {
WORD8 temp = 0;
WORD32 out1 = ptr_spec_coef[i];
if (out1 <= 0) {
out1 = sub_d(temp, out1);
if (out1 > 127) {
err = ixheaacd_inv_quant(&out1, ptr_pow_table_Q13);
if (err) return err;
} else
out1 = ptr_pow_table_Q13[out1];
ptr_spec_coef[i] = -out1;
} else {
if (out1 > 127) {
err = ixheaacd_inv_quant(&out1, ptr_pow_table_Q13);
if (err) return err;
} else
out1 = ptr_pow_table_Q13[out1];
ptr_spec_coef[i] = out1;
}
}
}
}
}
return AAC_DEC_OK;
}
void ixheaacd_init_ltp_object(ltp_info *ltp) {
ltp->data_present = 0;
ltp->last_band = 0;
ltp->lag_update = 0;
ltp->coef = 0;
}
WORD32 ixheaacd_ltp_data(WORD32 object_type, ia_ics_info_struct *ics,
ltp_info *ltp, ia_handle_bit_buf_struct bs,
WORD32 frame_len) {
UWORD8 sfb, w;
if (object_type == AOT_ER_AAC_LD) {
ltp->lag_update = ixheaacd_read_bits_buf(bs, 1);
if (ltp->lag_update) {
ltp->lag = (UWORD16)ixheaacd_read_bits_buf(bs, 10);
}
} else {
ltp->lag = (UWORD16)ixheaacd_read_bits_buf(bs, 11);
}
if (ltp->lag > (frame_len << 1)) return -1;
ltp->coef = (UWORD8)ixheaacd_read_bits_buf(bs, 3);
if (ics->window_sequence == EIGHT_SHORT_SEQUENCE) {
for (w = 0; w < 8; w++) {
if ((ltp->short_used[w] = ixheaacd_read_bits_buf(bs, 1)) & 1) {
ltp->short_lag_present[w] = ixheaacd_read_bits_buf(bs, 1);
if (ltp->short_lag_present[w]) {
ltp->short_lag[w] = (UWORD8)ixheaacd_read_bits_buf(bs, 4);
}
}
}
} else {
ltp->last_band = (ics->max_sfb < MAX_LTP_SFB ? ics->max_sfb : MAX_LTP_SFB);
for (sfb = 0; sfb < ltp->last_band; sfb++) {
ltp->long_used[sfb] = ixheaacd_read_bits_buf(bs, 1);
}
}
if (ics->frame_length == 480) {
if ((ics->sampling_rate_index > 5) &&
(ltp->last_band > MAX_LTP_SFB_SR_FIVE_PLUS_480))
ltp->last_band = MAX_LTP_SFB_SR_FIVE_PLUS_480;
else if ((ics->sampling_rate_index == 5) &&
(ltp->last_band > MAX_LTP_SFB_SR_FIVE_480))
ltp->last_band = MAX_LTP_SFB_SR_FIVE_480;
else if ((ics->sampling_rate_index < 5) &&
(ltp->last_band > MAX_LTP_SFB_SR_FIVE_LESS_480))
ltp->last_band = MAX_LTP_SFB_SR_FIVE_LESS_480;
} else if (ics->frame_length == 512) {
if ((ics->sampling_rate_index > 5) &&
(ltp->last_band > MAX_LTP_SFB_SR_FIVE_PLUS_512))
ltp->last_band = MAX_LTP_SFB_SR_FIVE_PLUS_512;
else if ((ics->sampling_rate_index == 5) &&
(ltp->last_band > MAX_LTP_SFB_SR_FIVE_512))
ltp->last_band = MAX_LTP_SFB_SR_FIVE_512;
else if ((ics->sampling_rate_index < 5) &&
(ltp->last_band > MAX_LTP_SFB_SR_FIVE_LESS_512))
ltp->last_band = MAX_LTP_SFB_SR_FIVE_LESS_512;
}
return 0;
}
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