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android13/external/libxaac/decoder/ixheaacd_aacdecoder.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 <stdio.h>
#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_basic_op.h"
#include "ixheaacd_intrinsics.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_aac_rom.h"
#include "ixheaacd_definitions.h"
#include "ixheaacd_error_codes.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_sbr_payload.h"
#include "ixheaacd_common_rom.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_sbr_scale.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_sbr_rom.h"
#include "ixheaacd_stereo.h"
#include "ixheaacd_lpp_tran.h"
#include "ixheaacd_hybrid.h"
#include "ixheaacd_ps_dec.h"
#include "ixheaacd_env_extr.h"
#include "ixheaacd_adts.h"
#include "ixheaacd_audioobjtypes.h"
#include "ixheaacd_memory_standards.h"
#include "ixheaacd_latmdemux.h"
#include "ixheaacd_aacdec.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_config.h"
#include "ixheaacd_mps_dec.h"
#include "ixheaacd_struct_def.h"
#include "ixheaacd_headerdecode.h"
#include "ixheaacd_multichannel.h"
#include "ixheaacd_adts_crc_check.h"
#include "ixheaacd_hcr.h"
#define SIZEOF_INT(x) ((sizeof(x) + sizeof(WORD32) - 1) / sizeof(WORD32))
#define EXT_FILL_DATA 1
#define EXT_FIL 0
WORD32 ixheaacd_aacdec_decodeframe(
ia_exhaacplus_dec_api_struct *p_obj_exhaacplus_dec,
ia_aac_dec_scratch_struct *aac_scratch_ptrs, WORD16 *time_data,
FLAG frame_status, WORD *type, WORD *ch_idx, WORD init_flag, WORD channel,
WORD *element_index_order, WORD skip_full_decode, WORD ch_fac,
WORD slot_element, WORD max_channels, WORD32 total_channels,
WORD32 frame_length, WORD32 frame_size, ia_drc_dec_struct *pstr_drc_dec,
WORD32 object_type, WORD32 ch_config,
ia_eld_specific_config_struct eld_specific_config, WORD16 adtsheader,
ia_drc_dec_struct *drc_dummy)
{
WORD ch, ele_type;
ia_aac_dec_state_struct *p_state_enhaacplus_dec;
ia_aac_decoder_struct *aac_dec_handle;
ia_bit_buf_struct *it_bit_buff;
ixheaacd_latm_struct *latm_element;
WORD error_code = (WORD)frame_status;
WORD previous_element;
WORD prev_data_ele_present = 0;
WORD new_element;
WORD32 num_ch = 0;
WORD32 crc_reg = 0;
ia_adts_crc_info_struct *ptr_adts_crc_info;
WORD32 cnt_bits = 0;
WORD32 eld_sbr_flag = eld_specific_config.ld_sbr_flag_present;
WORD32 ld_sbr_crc_flag = eld_specific_config.ld_sbr_crc_flag;
WORD32 aac_spect_data_resil_flag =
eld_specific_config.aac_spect_data_resil_flag;
WORD32 ele_ch = 0;
ia_aac_sfb_code_book_struct *ptr_aac_sfb_code_book_data[CHANNELS];
ia_pns_stereo_data_struct *ptr_pns_stereo_data;
WORD32 *work_buffer_core = aac_scratch_ptrs->base_scr_8k;
WORD32 *work_buffer_1 = aac_scratch_ptrs->extra_scr_4k[0];
WORD32 *work_buffer_2 = aac_scratch_ptrs->extra_scr_4k[2];
p_state_enhaacplus_dec = p_obj_exhaacplus_dec->p_state_aac;
aac_dec_handle = p_state_enhaacplus_dec->pstr_aac_dec_info[*ch_idx];
it_bit_buff = p_state_enhaacplus_dec->ptr_bit_stream;
ptr_adts_crc_info = it_bit_buff->pstr_adts_crc_info;
latm_element = &p_state_enhaacplus_dec->latm_struct_element;
ptr_pns_stereo_data =
(ia_pns_stereo_data_struct
*)&work_buffer_1[2 * SIZEOF_INT(ia_aac_dec_channel_info_struct) +
2 * SIZEOF_INT(ia_aac_sfb_code_book_struct)];
aac_dec_handle->frame_status = 1;
for (ch = 0; ch < channel; ch++) {
const ia_aac_dec_imdct_tables_struct *pstr_imdct_tables;
aac_dec_handle->pstr_aac_dec_ch_info[ch] =
(ia_aac_dec_channel_info_struct
*)&work_buffer_1[ch * SIZEOF_INT(ia_aac_dec_channel_info_struct)];
ptr_aac_sfb_code_book_data[ch] =
(ia_aac_sfb_code_book_struct
*)&work_buffer_1[2 * SIZEOF_INT(ia_aac_dec_channel_info_struct) +
(ch * SIZEOF_INT(ia_aac_sfb_code_book_struct))];
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_scale_factor =
ptr_aac_sfb_code_book_data[ch]->scale_factor;
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_code_book =
ptr_aac_sfb_code_book_data[ch]->code_book;
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_spec_coeff =
&work_buffer_core[ch * MAX_BINS_LONG];
if (object_type == AOT_ER_AAC_ELD) {
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_spec_coeff =
&work_buffer_core[2 * ch * MAX_BINS_LONG];
}
aac_dec_handle->pstr_aac_dec_ch_info[ch]->pstr_stereo_info =
&ptr_pns_stereo_data->str_stereo_info;
aac_dec_handle->pstr_aac_dec_ch_info[ch]->pstr_pns_corr_info =
&ptr_pns_stereo_data->str_pns_corr_info;
aac_dec_handle->pstr_aac_dec_ch_info[ch]->pstr_pns_rand_vec_data =
aac_dec_handle->pstr_pns_rand_vec_data;
pstr_imdct_tables = aac_dec_handle->pstr_aac_tables->pstr_imdct_tables;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] =
pstr_imdct_tables->only_long_window_sine;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_short_window[0] =
pstr_imdct_tables->only_short_window_sine;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] =
pstr_imdct_tables->only_long_window_kbd;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_short_window[1] =
pstr_imdct_tables->only_short_window_kbd;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_long_window[0] =
pstr_imdct_tables->only_long_window_sine;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_short_window[0] =
pstr_imdct_tables->only_short_window_sine;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_long_window[1] =
pstr_imdct_tables->only_long_window_kbd;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ptr_short_window[1] =
pstr_imdct_tables->only_short_window_kbd;
if (object_type == AOT_ER_AAC_ELD || object_type == AOT_ER_AAC_LD ||
object_type == AOT_AAC_LTP) {
aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.frame_length =
frame_length;
if (512 == aac_dec_handle->samples_per_frame) {
if (object_type != AOT_ER_AAC_ELD) {
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] =
(WORD16 *)pstr_imdct_tables->low_overlap_win;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] =
(WORD16 *)pstr_imdct_tables->window_sine_512;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ptr_long_window[1] =
(WORD16 *)pstr_imdct_tables->low_overlap_win;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ptr_long_window[0] =
(WORD16 *)pstr_imdct_tables->window_sine_512;
} else {
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] =
(WORD16 *)pstr_imdct_tables->window_sine_512_eld;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] =
(WORD16 *)pstr_imdct_tables->window_sine_512_eld;
}
} else if (480 == aac_dec_handle->samples_per_frame) {
if (object_type != AOT_ER_AAC_ELD) {
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] =
(WORD16 *)pstr_imdct_tables->low_overlap_win_480;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] =
(WORD16 *)pstr_imdct_tables->window_sine_480;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ptr_long_window[1] =
(WORD16 *)pstr_imdct_tables->low_overlap_win_480;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ptr_long_window[0] =
(WORD16 *)pstr_imdct_tables->window_sine_480;
} else {
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[1] =
(WORD16 *)pstr_imdct_tables->window_sine_480_eld;
aac_dec_handle->pstr_aac_dec_overlap_info[ch]->ptr_long_window[0] =
(WORD16 *)pstr_imdct_tables->window_sine_480_eld;
}
}
}
if ((object_type == AOT_ER_AAC_LD) || (object_type == AOT_AAC_LTP)) {
if (aac_dec_handle->samples_per_frame <= 512) {
aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp.lag =
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_lag;
}
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ltp_buf =
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_buf;
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ltp_lag =
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_lag;
}
aac_dec_handle->pstr_aac_dec_ch_info[ch]->scratch_buf_ptr = work_buffer_2;
if (object_type == AOT_ER_AAC_ELD) {
aac_dec_handle->pstr_aac_dec_ch_info[ch]->pulse_scratch =
aac_scratch_ptrs->extra_scr_4k[3];
}
}
if (channel == 2) {
if (aac_dec_handle->pstr_aac_dec_ch_info[1]->ptr_spec_coeff ==
aac_scratch_ptrs->extra_scr_4k[0]) {
aac_dec_handle->pstr_aac_dec_ch_info[1]->ptr_spec_coeff =
aac_dec_handle->pstr_aac_dec_ch_info[0]->ptr_spec_coeff;
}
}
for (ch = 0; ch < channel; ch++) {
ia_pns_info_struct *ptr_pns_info =
&aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_pns_info;
memset(ptr_pns_info, 0, sizeof(ia_pns_info_struct));
}
{
ia_pns_correlation_info_struct *ptr_corr_info =
aac_dec_handle->pstr_aac_dec_ch_info[0]->pstr_pns_corr_info;
memset(ptr_corr_info->correlated, 0, sizeof(UWORD8) * PNS_BAND_FLAGS_SIZE);
}
for (ch = 0; ch < channel; ch++) {
memset(&aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_hcr_info, 0,
sizeof(ia_hcr_info_struct));
ixheaacd_huff_code_reorder_tbl_init(
&aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_hcr_info);
}
for (ch = 0; ch < channel; ch++) {
aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp.data_present = 0;
aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp2.data_present =
0;
}
previous_element = ID_END;
aac_dec_handle->pstr_sbr_bitstream->no_elements = 0;
new_element = 0;
ele_type = *type;
cnt_bits = it_bit_buff->cnt_bits;
if (((object_type != AOT_ER_AAC_ELD) && (object_type != AOT_ER_AAC_LD)) ||
(object_type < ER_OBJECT_START)) {
while (ele_type != ID_END && aac_dec_handle->frame_status) {
ele_type = (WORD)ixheaacd_read_bits_buf(it_bit_buff, 3);
ixheaacd_read_bidirection(it_bit_buff, -3);
if (it_bit_buff->cnt_bits < 3) {
it_bit_buff->cnt_bits = -1;
error_code = (WORD16)(
(WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
break;
}
if ((ele_type == ID_FIL) || (ele_type == ID_DSE) || (new_element == 0)) {
ele_type = (WORD)ixheaacd_read_bits_buf(it_bit_buff, 3);
new_element = 1;
} else if ((ele_type != ID_END)) {
ele_type = -1;
break;
} else {
ele_type = (WORD)ixheaacd_read_bits_buf(it_bit_buff, 3);
}
if (it_bit_buff->cnt_bits < 0) {
aac_dec_handle->frame_status = 0;
}
switch (ele_type) {
case ID_SCE:
case ID_CPE:
case ID_LFE:
if (aac_dec_handle->frame_status) {
ia_aac_dec_channel_info_struct *pstr_aac_dec_ch_info =
aac_dec_handle->pstr_aac_dec_ch_info[LEFT];
ia_ics_info_struct *ptr_ics_info =
&pstr_aac_dec_ch_info->str_ics_info;
ele_ch = 1;
if (ele_type == ID_CPE) {
ele_ch = 2;
} else {
ele_ch = 1;
}
prev_data_ele_present = 1;
if (ptr_adts_crc_info->crc_active == 1 &&
ptr_adts_crc_info->no_reg < 7) {
crc_reg = ixheaacd_adts_crc_start_reg(
ptr_adts_crc_info, it_bit_buff, CRC_ADTS_RAW_DATA_BLK_LEN);
}
pstr_aac_dec_ch_info->element_instance_tag =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, 4);
element_index_order[*ch_idx] =
pstr_aac_dec_ch_info->element_instance_tag;
pstr_aac_dec_ch_info->common_window = 0;
ptr_ics_info->num_swb_window = 0;
ptr_ics_info->sampling_rate_index =
aac_dec_handle->sampling_rate_index;
if ((object_type == AOT_ER_AAC_LD) ||
(object_type == AOT_AAC_LTP)) {
ptr_ics_info->ltp.data_present = 0;
ptr_ics_info->ltp2.data_present = 0;
ptr_ics_info->predictor_data_present = 0;
}
if (ele_ch > 1) {
aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]
->str_ics_info.num_swb_window = 0;
aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]
->str_ics_info.sampling_rate_index =
aac_dec_handle->sampling_rate_index;
pstr_aac_dec_ch_info->common_window =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_aac_dec_ch_info->common_window) {
error_code = ixheaacd_ics_read(
it_bit_buff, ptr_ics_info, aac_dec_handle->num_swb_window,
object_type, pstr_aac_dec_ch_info->common_window,
aac_dec_handle->samples_per_frame);
if (error_code) {
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
goto _ia_handle_error;
}
aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]->str_ics_info =
pstr_aac_dec_ch_info->str_ics_info;
ixheaacd_read_ms_data(it_bit_buff, pstr_aac_dec_ch_info);
}
}
error_code = ixheaacd_individual_ch_stream(
it_bit_buff, aac_dec_handle, ele_ch, frame_length,
total_channels, object_type, eld_specific_config, ele_type);
if (error_code) return error_code;
if (ptr_adts_crc_info->crc_active == 1) {
ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff,
crc_reg);
}
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
if (error_code) {
goto _ia_handle_error;
}
_ia_handle_error:
if (error_code) {
aac_dec_handle->frame_status = 0;
if ((ele_type >= ID_SCE) && (ele_type <= ID_LFE))
num_ch = num_ch + ele_ch;
break;
} else {
error_code = ixheaacd_channel_pair_process(
aac_dec_handle->pstr_aac_dec_ch_info, ele_ch,
aac_dec_handle->pstr_aac_tables, total_channels, object_type,
aac_spect_data_resil_flag,
eld_specific_config.aac_sf_data_resil_flag,
aac_scratch_ptrs->in_data, aac_scratch_ptrs->out_data,
(void *)aac_dec_handle);
if (error_code) return error_code;
num_ch = num_ch + ele_ch;
}
}
break;
case ID_CCE:
if (max_channels > 2) {
prev_data_ele_present = 1;
error_code = ixheaacd_dec_coupling_channel_element(
it_bit_buff, aac_dec_handle,
aac_dec_handle->sampling_rate_index,
aac_dec_handle->pstr_aac_tables,
aac_dec_handle->pstr_common_tables,
&element_index_order[*ch_idx],
(ia_enhaacplus_dec_ind_cc *)aac_dec_handle->p_ind_channel_info,
total_channels, frame_length, object_type, eld_specific_config,
ele_type);
num_ch = num_ch + 1;
if (error_code) {
aac_dec_handle->frame_status = 0;
return error_code;
} else {
error_code = ixheaacd_channel_pair_process(
aac_dec_handle->pstr_aac_dec_ch_info, 1,
aac_dec_handle->pstr_aac_tables, total_channels, object_type,
aac_spect_data_resil_flag,
eld_specific_config.aac_sf_data_resil_flag,
aac_scratch_ptrs->in_data, aac_scratch_ptrs->out_data,
(void *)aac_dec_handle);
if (error_code) return error_code;
}
} else {
error_code =
(WORD32)((WORD32)IA_ENHAACPLUS_DEC_EXE_FATAL_UNIMPLEMENTED_CCE);
}
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)((
WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
goto _ia_handle_error;
}
break;
case ID_DSE:
case ID_PCE:
case ID_FIL:
{
WORD32 flag = 1;
if ((ele_type != ID_FIL) && (ptr_adts_crc_info->crc_active == 1) &&
(ptr_adts_crc_info->no_reg < 7)) {
crc_reg =
ixheaacd_adts_crc_start_reg(ptr_adts_crc_info, it_bit_buff, 0);
}
if (ele_type == ID_DSE) {
ixheaacd_read_data_stream_element(
it_bit_buff, &aac_dec_handle->byte_align_bits,
p_obj_exhaacplus_dec->p_state_aac->pstr_drc_dec);
}
else if (ele_type == ID_PCE) {
error_code = ixheaacd_decode_pce(
it_bit_buff,
&p_obj_exhaacplus_dec->aac_config.ui_pce_found_in_hdr,
&p_obj_exhaacplus_dec->aac_config.str_prog_config);
if (error_code != 0) {
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
goto _ia_handle_error;
}
aac_dec_handle->frame_status = 0;
if (error_code > 0) {
error_code = IA_ENHAACPLUS_DEC_EXE_NONFATAL_DECODE_FRAME_ERROR;
return error_code;
} else {
return error_code;
}
}
}
else if (ele_type == ID_FIL) {
WORD32 bits_decoded = 0;
if (object_type == AOT_ER_AAC_ELD) {
bits_decoded = (it_bit_buff->size - it_bit_buff->cnt_bits);
cnt_bits = (frame_size * 8 - bits_decoded);
if (adtsheader == 1) {
if (cnt_bits > it_bit_buff->cnt_bits)
return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES;
}
}
if (ixheaacd_check_for_sbr_payload(
it_bit_buff, aac_dec_handle->pstr_sbr_bitstream,
(WORD16)previous_element, pstr_drc_dec, object_type,
adtsheader, cnt_bits, ld_sbr_crc_flag, drc_dummy)) {
flag = 0;
}
}
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)((
WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
goto _ia_handle_error;
}
if (flag) {
if (prev_data_ele_present == 0) {
new_element = 0;
}
}
if ((ele_type != ID_FIL) && (ptr_adts_crc_info->crc_active == 1)) {
ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff, crc_reg);
}
if (ele_type == ID_PCE) {
if (ptr_adts_crc_info->str_crc_reg_data[crc_reg].bit_buf_cnt) {
ptr_adts_crc_info->str_crc_reg_data[crc_reg].max_bits =
ptr_adts_crc_info->str_crc_reg_data[crc_reg].bit_buf_cnt;
}
}
}
break;
case ID_END:
error_code = 0;
break;
}
previous_element = ele_type;
if (init_flag) {
if ((ele_type >= ID_SCE) && (ele_type <= ID_LFE)) {
p_obj_exhaacplus_dec->aac_config.element_type[*ch_idx] = ele_type;
}
}
}
} else {
{
switch (ch_config) {
default:
if (aac_dec_handle->frame_status) {
ia_aac_dec_channel_info_struct *pstr_aac_dec_ch_info =
aac_dec_handle->pstr_aac_dec_ch_info[LEFT];
ia_ics_info_struct *ptr_ics_info =
&pstr_aac_dec_ch_info->str_ics_info;
if (ch_config == 2)
ele_ch = 2, ele_type = 1;
else
ele_ch = 1, ele_type = 0;
prev_data_ele_present = 1;
if ((ptr_adts_crc_info->crc_active == 1) &&
(ptr_adts_crc_info->no_reg < 7)) {
crc_reg = ixheaacd_adts_crc_start_reg(
ptr_adts_crc_info, it_bit_buff, CRC_ADTS_RAW_DATA_BLK_LEN);
}
if (object_type != AOT_ER_AAC_ELD)
pstr_aac_dec_ch_info->element_instance_tag =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, 4);
element_index_order[*ch_idx] =
pstr_aac_dec_ch_info->element_instance_tag;
pstr_aac_dec_ch_info->common_window = 0;
ptr_ics_info->num_swb_window = 0;
ptr_ics_info->sampling_rate_index =
aac_dec_handle->sampling_rate_index;
if (object_type == AOT_ER_AAC_LD) {
ptr_ics_info->ltp.data_present = 0;
ptr_ics_info->ltp2.data_present = 0;
ptr_ics_info->predictor_data_present = 0;
}
if (ele_ch > 1) {
aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]
->str_ics_info.num_swb_window = 0;
aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]
->str_ics_info.sampling_rate_index =
aac_dec_handle->sampling_rate_index;
if (object_type != 39)
pstr_aac_dec_ch_info->common_window =
(WORD16)ixheaacd_read_bits_buf(it_bit_buff, 1);
else
pstr_aac_dec_ch_info->common_window = 1;
if (pstr_aac_dec_ch_info->common_window) {
error_code = ixheaacd_ics_read(
it_bit_buff, ptr_ics_info, aac_dec_handle->num_swb_window,
object_type, pstr_aac_dec_ch_info->common_window,
aac_dec_handle->samples_per_frame);
if (error_code) {
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
goto _ia_handle_error1;
}
aac_dec_handle->pstr_aac_dec_ch_info[RIGHT]->str_ics_info =
pstr_aac_dec_ch_info->str_ics_info;
ixheaacd_read_ms_data(it_bit_buff, pstr_aac_dec_ch_info);
{
if (object_type == AOT_ER_AAC_LD) {
IA_ERRORCODE temp = ixheaacd_ltp_decode(
it_bit_buff, ptr_ics_info, object_type,
aac_dec_handle->samples_per_frame, LEFT);
if (temp != 0) {
return temp;
}
}
}
}
}
error_code = ixheaacd_individual_ch_stream(
it_bit_buff, aac_dec_handle, ele_ch, frame_length,
total_channels, object_type, eld_specific_config, ele_type);
if (error_code) return error_code;
if (ptr_adts_crc_info->crc_active == 1) {
ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff,
crc_reg);
}
if (it_bit_buff->cnt_bits < 0) {
error_code = (WORD16)(
(WORD32)
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
if (error_code) {
goto _ia_handle_error1;
}
_ia_handle_error1:
if (error_code) {
aac_dec_handle->frame_status = 0;
if ((ele_type >= ID_SCE) && (ele_type <= ID_LFE))
num_ch = num_ch + ele_ch;
break;
} else {
error_code = ixheaacd_channel_pair_process(
aac_dec_handle->pstr_aac_dec_ch_info, ele_ch,
aac_dec_handle->pstr_aac_tables, total_channels, object_type,
aac_spect_data_resil_flag,
eld_specific_config.aac_sf_data_resil_flag,
aac_scratch_ptrs->in_data, aac_scratch_ptrs->out_data,
(void *)aac_dec_handle);
if (error_code) return error_code;
num_ch = num_ch + ele_ch;
}
}
p_obj_exhaacplus_dec->aac_config.element_type[*ch_idx] = ele_ch - 1;
break;
}
if ((object_type != AOT_ER_AAC_ELD) || (!eld_sbr_flag)) {
WORD32 bits_decoded, cnt_bits;
bits_decoded = (it_bit_buff->size - it_bit_buff->cnt_bits);
cnt_bits = (frame_size * 8 - bits_decoded);
if (cnt_bits >= 8) {
error_code = ixheaacd_extension_payload(it_bit_buff, cnt_bits);
if (error_code) return error_code;
}
if (((object_type == AOT_ER_AAC_ELD) ||
(object_type == AOT_ER_AAC_LD)) &&
(p_obj_exhaacplus_dec->aac_config.ld_decoder != 1)) {
if (it_bit_buff->cnt_bits) {
WORD32 alignment = it_bit_buff->bit_pos & 0x07;
it_bit_buff->cnt_bits = (it_bit_buff->cnt_bits + alignment) & 7;
it_bit_buff->bit_pos = 7;
it_bit_buff->ptr_read_next++;
}
} else {
if (it_bit_buff->bit_pos != 7) {
WORD32 alignment = it_bit_buff->bit_pos & 0x07;
it_bit_buff->cnt_bits -= alignment + 1;
it_bit_buff->bit_pos += 7 - alignment;
it_bit_buff->ptr_read_next++;
}
}
} else {
WORD32 bits_decoded, cnt_bits;
bits_decoded = (it_bit_buff->size - it_bit_buff->cnt_bits);
cnt_bits = (frame_size * 8 - bits_decoded);
if (adtsheader == 1) {
if (cnt_bits > it_bit_buff->cnt_bits)
return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES;
}
ixheaacd_check_for_sbr_payload(
it_bit_buff, aac_dec_handle->pstr_sbr_bitstream,
(WORD16)(ch_config - 1), pstr_drc_dec, object_type, adtsheader,
cnt_bits, ld_sbr_crc_flag, drc_dummy);
}
}
}
if (ele_type == ID_END &&
p_state_enhaacplus_dec->bs_format == LOAS_BSFORMAT) {
WORD32 tmp;
tmp = ((WORD32)latm_element->layer_info[0][0].frame_len_bits) -
(it_bit_buff->initial_cnt_bits - it_bit_buff->cnt_bits);
if (tmp > 0) ixheaacd_read_bidirection(it_bit_buff, tmp);
if (latm_element->other_data_present) {
WORD32 count_bits = (WORD32)latm_element->other_data_length;
ixheaacd_read_bidirection(it_bit_buff, count_bits);
}
}
if (object_type == AOT_ER_AAC_LD) {
for (ch = 0; ch < channel; ch++) {
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]->ltp_lag =
aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info.ltp.lag;
}
}
aac_dec_handle->frame_status = aac_dec_handle->frame_status && frame_status;
aac_dec_handle->channels = num_ch;
if (error_code == 0)
if ((skip_full_decode == 0) || ((skip_full_decode == 1) && error_code)) {
ia_ics_info_struct str_ics_info[2];
WORD32 *spec_coef[2];
WORD32 *scratch[2];
for (ch = 0; ch < channel; ch++) {
str_ics_info[ch] =
aac_dec_handle->pstr_aac_dec_ch_info[ch]->str_ics_info;
spec_coef[ch] =
aac_dec_handle->pstr_aac_dec_ch_info[ch]->ptr_spec_coeff;
}
scratch[0] = (WORD32 *)aac_scratch_ptrs->extra_scr_4k[2];
scratch[1] = (WORD32 *)aac_scratch_ptrs->extra_scr_4k[1];
error_code = ixheaacd_drc_map_channels(
pstr_drc_dec, aac_dec_handle->channels,
aac_dec_handle->pstr_aac_dec_ch_info[0]->str_ics_info.frame_length);
if (error_code) return error_code;
for (ch = 0; ch < aac_dec_handle->channels; ch++) {
WORD32 *overlap1 = aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->overlap_add_data.ptr_overlap_buf;
const WORD16 *ptr_long_window_next =
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ptr_long_window[(int)str_ics_info[ch].window_shape];
const WORD16 *ptr_short_window_next =
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ptr_short_window[(int)str_ics_info[ch].window_shape];
if (pstr_drc_dec->drc_on) {
ixheaacd_drc_apply(pstr_drc_dec, spec_coef[ch],
str_ics_info[ch].window_sequence, ch,
str_ics_info[ch].frame_length);
}
if (skip_full_decode == 0) {
ixheaacd_imdct_process(
aac_dec_handle->pstr_aac_dec_overlap_info[ch], spec_coef[ch],
&str_ics_info[ch], time_data + slot_element, (WORD16)ch_fac,
scratch[ch], aac_dec_handle->pstr_aac_tables, object_type);
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->overlap_add_data.win_shape = str_ics_info[ch].window_shape;
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->overlap_add_data.win_seq = str_ics_info[ch].window_sequence;
if ((object_type == AOT_ER_AAC_LD) || (object_type == AOT_AAC_LTP)) {
{
if ((str_ics_info[ch].window_sequence == ONLY_LONG_SEQUENCE) ||
(str_ics_info[ch].window_sequence == LONG_STOP_SEQUENCE)) {
ixheaacd_lt_update_state(
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ltp_buf,
time_data + slot_element, overlap1,
aac_dec_handle->samples_per_frame, object_type,
(WORD16)ch_fac, str_ics_info[ch].window_sequence,
(WORD16 *)ptr_long_window_next);
} else {
ixheaacd_lt_update_state(
aac_dec_handle->ptr_aac_dec_static_channel_info[ch]
->ltp_buf,
time_data + slot_element, overlap1,
aac_dec_handle->samples_per_frame, object_type,
(WORD16)ch_fac, str_ics_info[ch].window_sequence,
(WORD16 *)ptr_short_window_next);
}
}
}
slot_element++;
}
}
}
if (ele_type == ID_END) {
ixheaacd_byte_align(it_bit_buff, &aac_dec_handle->byte_align_bits);
if (p_state_enhaacplus_dec->bs_format == LOAS_BSFORMAT) {
ixheaacd_byte_align(it_bit_buff, &it_bit_buff->audio_mux_align);
}
}
*type = ele_type;
aac_dec_handle->block_number =
ixheaacd_add32(aac_dec_handle->block_number, 1);
return error_code;
}
WORD32 ixheaacd_extension_payload(ia_bit_buf_struct *it_bit_buff, WORD32 cnt) {
WORD16 extension_type, discard;
WORD32 i;
WORD32 fill_nibble;
WORD32 err = 0;
extension_type = (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 4);
switch (extension_type) {
case EXT_FILL_DATA:
fill_nibble = ixheaacd_read_bits_buf(it_bit_buff, 4);
if (fill_nibble == 0) {
for (i = 0; i < (cnt >> 3) - 1; i++) {
ixheaacd_read_bits_buf(it_bit_buff, 8);
}
} else
err = -1;
break;
case EXT_FIL:
default:
for (i = 0; i < ((cnt)-8) + 4; i++) {
discard = (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 1);
}
}
return err;
}
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