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aosp12/external/libxaac/decoder/ixheaacd_process.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 <math.h>
#include "ixheaacd_type_def.h"
#include "ixheaacd_memory_standards.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_aac_rom.h"
#include "ixheaacd_common_rom.h"
#include "ixheaacd_sbr_rom.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_pulsedata.h"
#include "ixheaacd_pns.h"
#include "ixheaacd_sbr_common.h"
#include "ixheaacd_drc_data_struct.h"
#include "ixheaacd_drc_dec.h"
#include "ixheaacd_lt_predict.h"
#include "ixheaacd_channelinfo.h"
#include "ixheaacd_channel.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_audioobjtypes.h"
#include "ixheaacd_latmdemux.h"
#include "ixheaacd_aacdec.h"
#include "ixheaacd_sbr_common.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_config.h"
#include "ixheaacd_mps_dec.h"
#include "ixheaacd_mps_interface.h"
#include "ixheaacd_struct_def.h"
#include "ixheaacd_config.h"
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_interface.h"
#include "ixheaacd_tns_usac.h"
#include "ixheaacd_cnst.h"
#include "ixheaacd_acelp_info.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_info.h"
#include "ixheaacd_struct.h"
#include "ixheaacd_sbrdecoder.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_sbr_const.h"
#include "ixheaacd_main.h"
#include "ixheaacd_arith_dec.h"
#include "ixheaacd_bit_extract.h"
#include "ixheaacd_create.h"
#include "ixheaacd_func_def.h"
#include "ixheaacd_mps_interface.h"
#include "ixheaacd_mps_polyphase.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_sbr_scale.h"
#include "ixheaacd_lpp_tran.h"
#include "ixheaacd_hybrid.h"
#include "ixheaacd_ps_dec.h"
#include "ixheaacd_env_extr.h"
#include "ixheaacd_env_calc.h"
#include "ixheaacd_qmf_dec.h"
#include "ixheaacd_pvc_dec.h"
#include "ixheaacd_sbr_dec.h"
#include "ixheaacd_error_codes.h"
#define MAXNRSBRELEMENTS 6
VOID ixheaacd_allocate_sbr_scr(ia_sbr_scr_struct *sbr_scratch_struct,
VOID *base_scratch_ptr, VOID *output_ptr,
WORD total_elements, WORD ch_fac,
WORD32 object_type);
IA_ERRORCODE ixheaacd_applysbr(
ia_handle_sbr_dec_inst_struct self,
ia_aac_dec_sbr_bitstream_struct *p_sbr_bit_stream, WORD16 *core_sample_buf,
WORD16 *codec_num_channels, FLAG frame_status, FLAG down_samp_flag,
FLAG down_mix_flag, ia_sbr_scr_struct *sbr_scratch_struct, WORD32 ps_enable,
WORD32 ch_fac, WORD32 slot_element, ia_bit_buf_struct *it_bit_buff,
ia_drc_dec_struct *pstr_drc_dec, WORD eld_sbr_flag, WORD32 object_type);
IA_ERRORCODE ixheaacd_esbr_process(ia_usac_data_struct *usac_data,
ia_bit_buf_struct *it_bit_buff,
WORD32 stereo_config_idx,
WORD16 num_channels,
WORD32 audio_object_type) {
WORD32 ch;
WORD32 err_code = 0;
ia_aac_dec_sbr_bitstream_struct *esbr_bit_str = &usac_data->esbr_bit_str[0];
ia_handle_sbr_dec_inst_struct self = usac_data->pstr_esbr_dec;
ia_sbr_scr_struct sbr_scratch_struct;
ixheaacd_allocate_sbr_scr(&sbr_scratch_struct,
usac_data->sbr_scratch_mem_base, NULL, 2, 1,
audio_object_type);
self->usac_independency_flag = usac_data->usac_independency_flg;
self->time_sample_buf[0] = usac_data->time_sample_vector[0];
self->time_sample_buf[1] = usac_data->time_sample_vector[1];
self->stereo_config_idx = stereo_config_idx;
self->sbr_mode = usac_data->sbr_mode;
self->aot_usac_flag = usac_data->usac_flag;
for (ch = 0; ch < num_channels; ch++) {
if ((self->pstr_sbr_channel[ch]
->str_sbr_dec.str_synthesis_qmf_bank.qmf_filter_state_size) <
QMF_FILTER_STATE_SYN_SIZE)
return IA_FATAL_ERROR;
}
err_code = ixheaacd_applysbr(self, esbr_bit_str, NULL, &num_channels, 1, 0, 0,
&sbr_scratch_struct, 0, 1, 0, it_bit_buff, NULL,
0, audio_object_type);
usac_data->sbr_mode = self->sbr_mode;
return err_code;
}
static VOID ixheaacd_sbr_ext_data_read(
ia_bit_buf_struct *it_bit_buff,
ia_aac_dec_sbr_bitstream_struct *esbr_bit_str) {
WORD32 count = 0;
WORD32 read_bits = 0;
WORD32 unaligned_bits = 0;
WORD32 cnt_bits_in;
cnt_bits_in = it_bit_buff->cnt_bits;
count = (it_bit_buff->cnt_bits) >> 3;
if (count > 0) {
if ((esbr_bit_str->no_elements < MAXNRSBRELEMENTS)) {
esbr_bit_str->str_sbr_ele[esbr_bit_str->no_elements].extension_type =
EXT_SBR_DATA;
esbr_bit_str->str_sbr_ele[esbr_bit_str->no_elements].size_payload = count;
read_bits = count << 3;
unaligned_bits = (cnt_bits_in - read_bits);
if (unaligned_bits > 0 && unaligned_bits < 8) {
count++;
esbr_bit_str->str_sbr_ele[esbr_bit_str->no_elements].size_payload =
count;
}
esbr_bit_str->no_elements += 1;
}
}
}
static WORD32 ixheaacd_read_ext_element(
UWORD32 usac_ext_element_default_length,
UWORD32 usac_ext_element_payload_frag, ia_bit_buf_struct *it_bit_buff,
ia_usac_decoder_config_struct *pstr_usac_dec_config, WORD32 elem_idx) {
UWORD32 usac_ext_element_present;
UWORD32 usac_ext_element_use_dft_length;
UWORD32 pay_load_length, tmp;
WORD32 i;
usac_ext_element_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (usac_ext_element_present) {
usac_ext_element_use_dft_length = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (usac_ext_element_use_dft_length) {
pay_load_length = usac_ext_element_default_length;
} else {
pay_load_length = ixheaacd_read_bits_buf(it_bit_buff, 8);
if (pay_load_length == 255) {
WORD32 val_add = 0;
val_add = ixheaacd_read_bits_buf(it_bit_buff, 16);
pay_load_length = (UWORD32)((WORD32)pay_load_length + val_add - 2);
}
}
if ((it_bit_buff->cnt_bits >> 3) < (WORD32)pay_load_length)
return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES;
if (pay_load_length > 0) {
if (usac_ext_element_payload_frag)
tmp = ixheaacd_read_bits_buf(it_bit_buff, 2);
if (pstr_usac_dec_config->usac_ext_ele_payload_present[elem_idx]) {
WORD32 preroll_counter = pstr_usac_dec_config->preroll_counter;
int payload_buffer_offeset = 0;
for (i = 0; i < preroll_counter; i++)
payload_buffer_offeset +=
pstr_usac_dec_config->usac_ext_gain_payload_len[i] *
sizeof(WORD8);
if ((pay_load_length + payload_buffer_offeset) >
(MAX_AUDIO_PREROLLS * 768))
return IA_FATAL_ERROR;
for (i = 0; i < ((WORD32)pay_load_length); i++) {
pstr_usac_dec_config
->usac_ext_gain_payload_buf[i + payload_buffer_offeset] =
ixheaacd_read_bits_buf(it_bit_buff, 8);
}
pstr_usac_dec_config->usac_ext_gain_payload_len[preroll_counter] +=
pay_load_length;
} else {
if (it_bit_buff->cnt_bits < (WORD32)(pay_load_length << 3)) {
longjmp(*(it_bit_buff->xaac_jmp_buf),
IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES);
}
it_bit_buff->ptr_read_next =
it_bit_buff->ptr_read_next + pay_load_length;
it_bit_buff->cnt_bits =
it_bit_buff->cnt_bits - (WORD32)(pay_load_length << 3);
}
}
}
return 0;
}
static VOID ixheaacd_sbr_ele_type_set(
ia_aac_dec_sbr_bitstream_struct *esbr_bit_str0,
ia_aac_dec_sbr_bitstream_struct *esbr_bit_str1, WORD32 ele_id,
WORD32 st_config_idx) {
if (ele_id == ID_USAC_SCE) {
esbr_bit_str0->str_sbr_ele[esbr_bit_str0->no_elements].sbr_ele_id =
SBR_ID_SCE;
esbr_bit_str1->str_sbr_ele[esbr_bit_str1->no_elements].sbr_ele_id =
SBR_ID_SCE;
}
if (ele_id == ID_USAC_CPE) {
if ((st_config_idx == 0) || (st_config_idx == 3)) {
esbr_bit_str0->str_sbr_ele[esbr_bit_str0->no_elements].sbr_ele_id =
SBR_ID_CPE;
esbr_bit_str1->str_sbr_ele[esbr_bit_str1->no_elements].sbr_ele_id =
SBR_ID_CPE;
} else {
esbr_bit_str0->str_sbr_ele[esbr_bit_str0->no_elements].sbr_ele_id =
SBR_ID_SCE;
esbr_bit_str1->str_sbr_ele[esbr_bit_str1->no_elements].sbr_ele_id =
SBR_ID_SCE;
}
}
if (ele_id == ID_USAC_LFE) {
esbr_bit_str0->str_sbr_ele[esbr_bit_str0->no_elements].sbr_ele_id =
SBR_ID_SCE;
esbr_bit_str1->str_sbr_ele[esbr_bit_str1->no_elements].sbr_ele_id =
SBR_ID_SCE;
esbr_bit_str0->no_elements++;
esbr_bit_str0->str_sbr_ele[0].size_payload = 0;
}
}
VOID ixheaacd_ms_processing(ia_usac_data_struct *pstr_usac_data) {
WORD32 i;
FLOAT32 tmp, tmp1;
FLOAT32 ms_factor = (FLOAT32)0.7071067812;
for (i = 0; i < pstr_usac_data->ccfl; i++) {
tmp = (FLOAT32)((pstr_usac_data->time_sample_vector[0][i] +
pstr_usac_data->time_sample_vector[1][i]) *
ms_factor);
tmp1 = (FLOAT32)((pstr_usac_data->time_sample_vector[0][i] -
pstr_usac_data->time_sample_vector[1][i]) *
ms_factor);
pstr_usac_data->time_sample_vector[1][i] = tmp1;
pstr_usac_data->time_sample_vector[0][i] = tmp;
}
}
WORD32 ixheaacd_usac_process(ia_dec_data_struct *pstr_dec_data,
WORD32 *num_out_channels, VOID *codec_handle) {
WORD32 ele_id = 0;
WORD32 err_code = 0;
ia_aac_dec_state_struct *p_state_aac_dec =
(ia_aac_dec_state_struct *)codec_handle;
ia_usac_data_struct *pstr_usac_data = &(pstr_dec_data->str_usac_data);
ia_bit_buf_struct *it_bit_buff = &pstr_dec_data->dec_bit_buf;
ia_frame_data_struct *fd = &(pstr_dec_data->str_frame_data);
ia_usac_config_struct *pstr_usac_config =
&(fd->str_audio_specific_config.str_usac_config);
ia_usac_decoder_config_struct *pstr_usac_dec_config =
&(fd->str_audio_specific_config.str_usac_config.str_usac_dec_config);
WORD32 err = 0;
WORD16 nr_core_coder_channels = 0;
WORD32 ch_offset = 0;
WORD32 elem_idx = 0;
WORD32 num_ch_out = 0;
WORD32 num_elements = pstr_usac_dec_config->num_elements;
pstr_usac_data->usac_independency_flg =
ixheaacd_read_bits_buf(it_bit_buff, 1);
for (elem_idx = 0; elem_idx < num_elements; elem_idx++) {
WORD32 stereo_config_index =
pstr_usac_config->str_usac_dec_config.str_usac_element_config[elem_idx]
.stereo_config_index;
pstr_usac_data->esbr_bit_str[0].no_elements = 0;
pstr_usac_data->esbr_bit_str[1].no_elements = 0;
switch (ele_id = pstr_usac_dec_config->usac_element_type[elem_idx]) {
case ID_USAC_SCE:
nr_core_coder_channels = 1;
num_ch_out += 1;
goto core_data_extracting;
case ID_USAC_CPE:
nr_core_coder_channels = (stereo_config_index == 1) ? 1 : 2;
if (((stereo_config_index > 1) || (stereo_config_index == 0)) &&
(p_state_aac_dec->num_of_output_ch < 2))
return -1;
num_ch_out += 2;
goto core_data_extracting;
case ID_USAC_LFE:
nr_core_coder_channels = 1;
num_ch_out += 1;
core_data_extracting:
if (ch_offset >= MAX_NUM_CHANNELS_USAC_LVL2) return -1;
if (num_ch_out > MAX_NUM_CHANNELS_USAC_LVL2) return -1;
err = ixheaacd_core_coder_data(ele_id, pstr_usac_data, elem_idx,
ch_offset, it_bit_buff,
nr_core_coder_channels);
if (err != 0) return -1;
ixheaacd_sbr_ele_type_set(&pstr_usac_data->esbr_bit_str[0],
&pstr_usac_data->esbr_bit_str[1], ele_id,
stereo_config_index);
if (pstr_usac_data->mps_pseudo_lr[elem_idx])
ixheaacd_ms_processing(pstr_usac_data);
if (ele_id != ID_USAC_LFE) {
if (pstr_usac_data->sbr_ratio_idx > 0)
ixheaacd_sbr_ext_data_read(it_bit_buff,
&pstr_usac_data->esbr_bit_str[0]);
}
if ((pstr_usac_data->sbr_ratio_idx > 0) &&
(pstr_usac_data->esbr_bit_str[0].no_elements != 0)) {
err_code = ixheaacd_esbr_process(
pstr_usac_data, it_bit_buff, stereo_config_index,
nr_core_coder_channels,
pstr_dec_data->str_usac_data.audio_object_type);
if (err_code < 0) return err_code;
}
if (stereo_config_index > 0 && pstr_usac_data->sbr_ratio_idx > 0) {
FLOAT32 **ptr_inp[2 * 2];
WORD32 ch;
*num_out_channels = p_state_aac_dec->mps_dec_handle.out_ch_count;
err = ixheaacd_mps_frame_parsing(
&p_state_aac_dec->mps_dec_handle,
pstr_usac_data->usac_independency_flg, it_bit_buff);
if (err) return err;
for (ch = 0; ch < nr_core_coder_channels; ch++) {
ptr_inp[2 * ch] =
pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[ch]
->str_sbr_dec.pp_qmf_buf_real;
ptr_inp[2 * ch + 1] =
pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[ch]
->str_sbr_dec.pp_qmf_buf_imag;
p_state_aac_dec->mps_dec_handle.p_sbr_dec[ch] =
(VOID *)(&pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[ch]
->str_sbr_dec);
p_state_aac_dec->mps_dec_handle.p_sbr_header[ch] =
(VOID *)(pstr_usac_data->pstr_esbr_dec->pstr_sbr_header[ch]);
p_state_aac_dec->mps_dec_handle.p_sbr_frame[ch] =
(VOID *)(pstr_usac_data->pstr_esbr_dec->frame_buffer[ch]);
}
if (nr_core_coder_channels == 1) {
if (p_state_aac_dec->mps_dec_handle.res_ch_count != 0) {
ptr_inp[2] = pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[1]
->str_sbr_dec.pp_qmf_buf_real;
ptr_inp[2 + 1] =
pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[1]
->str_sbr_dec.pp_qmf_buf_imag;
}
p_state_aac_dec->mps_dec_handle.p_sbr_dec[1] =
(VOID *)(&pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[1]
->str_sbr_dec);
p_state_aac_dec->mps_dec_handle.p_sbr_header[1] =
(VOID *)(pstr_usac_data->pstr_esbr_dec->pstr_sbr_header[1]);
p_state_aac_dec->mps_dec_handle.p_sbr_frame[1] =
(VOID *)(pstr_usac_data->pstr_esbr_dec->frame_buffer[1]);
}
err = ixheaacd_mps_apply(&p_state_aac_dec->mps_dec_handle, ptr_inp,
pstr_usac_data->time_sample_vector);
if (err) return err;
}
ch_offset += nr_core_coder_channels;
break;
case ID_USAC_EXT: {
ia_usac_dec_element_config_struct *pusac_element_config =
&pstr_usac_dec_config->str_usac_element_config[elem_idx];
err = ixheaacd_read_ext_element(
pusac_element_config->usac_ext_eleme_def_len,
pusac_element_config->usac_ext_elem_pld_frag, it_bit_buff,
pstr_usac_dec_config, elem_idx);
if (err != 0) return err;
break;
}
default:
return -1;
break;
}
}
return 0;
}
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