/******************************************************************************
* *
* 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 <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ixheaacd_type_def.h>
#include "ixheaacd_bitbuffer.h"
#include "ixheaacd_defines.h"
#include "ixheaacd_memory_standards.h"
#include "ixheaacd_sbrdecsettings.h"
#include "ixheaacd_env_extr_part.h"
#include "ixheaacd_aac_rom.h"
#include "ixheaacd_common_rom.h"
#include <ixheaacd_sbr_rom.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_channelinfo.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_struct_def.h"
#include "ixheaacd_config.h"
#include "ixheaacd_interface.h"
#include "ixheaacd_info.h"
#include "ixheaacd_struct.h"
#include "ixheaacd_constants.h"
UWORD32 ixheaacd_sbr_ratio(UWORD32 core_sbr_framelength_idx) {
UWORD32 sbr_ratio_index = 0x0FF;
switch (core_sbr_framelength_idx) {
case 0:
case 1:
sbr_ratio_index = USAC_SBR_RATIO_NO_SBR;
break;
case 2:
sbr_ratio_index = USAC_SBR_RATIO_INDEX_8_3;
break;
case 3:
sbr_ratio_index = USAC_SBR_RATIO_INDEX_2_1;
break;
case 4:
sbr_ratio_index = USAC_SBR_RATIO_INDEX_4_1;
break;
}
return sbr_ratio_index;
}
WORD32 ixheaacd_get_sample_freq_indx(WORD32 sampling_freq) {
WORD32 sampling_rate_tbl[] = {96000, 88200, 64000, 48000, 44100, 32000,
24000, 22050, 16000, 12000, 11025, 8000,
7350, 0, 0, 0};
WORD32 index;
WORD32 tbl_size = sizeof(sampling_rate_tbl) / sizeof(WORD32) - 1;
for (index = 0; index < tbl_size; index++) {
if (sampling_rate_tbl[index] == sampling_freq) break;
}
if (index > tbl_size) {
return tbl_size - 1;
}
return index;
}
UWORD32 ixheaacd_sbr_params(UWORD32 core_sbr_framelength_idx,
WORD32 *output_framelength, WORD32 *block_size,
WORD32 *output_samples, WORD32 *sample_rate_layer,
UWORD32 *sample_freq_indx) {
UWORD32 sbr_ratio_index = 0x0FF;
*output_framelength = -1;
switch (core_sbr_framelength_idx) {
case 0:
sbr_ratio_index = USAC_SBR_RATIO_NO_SBR;
*output_framelength = USAC_OUT_FRAMELENGTH_768;
*block_size = 768;
*output_samples = *block_size;
break;
case 1:
sbr_ratio_index = USAC_SBR_RATIO_NO_SBR;
*output_framelength = USAC_OUT_FRAMELENGTH_1024;
*block_size = 1024;
*output_samples = *block_size;
break;
case 2:
sbr_ratio_index = USAC_SBR_RATIO_INDEX_8_3;
*output_framelength = USAC_OUT_FRAMELENGTH_2048;
*block_size = 768;
*output_samples = (*block_size * 8) / 3;
*sample_rate_layer = (*sample_rate_layer * 3) >> 3;
break;
case 3:
sbr_ratio_index = USAC_SBR_RATIO_INDEX_2_1;
*output_framelength = USAC_OUT_FRAMELENGTH_2048;
*block_size = 1024;
*output_samples = *block_size * 2;
*sample_rate_layer = *sample_rate_layer >> 1;
break;
case 4:
sbr_ratio_index = USAC_SBR_RATIO_INDEX_4_1;
*output_framelength = USAC_OUT_FRAMELENGTH_4096;
*block_size = 1024;
*output_samples = *block_size * 4;
*sample_rate_layer = *sample_rate_layer >> 2;
break;
}
*sample_freq_indx = ixheaacd_get_sample_freq_indx(*sample_rate_layer);
return sbr_ratio_index;
}
VOID ixheaacd_read_escape_value(ia_bit_buf_struct *it_bit_buff,
UWORD32 *ext_ele_value, UWORD32 no_bits1,
UWORD32 no_bits2, UWORD32 no_bits3) {
UWORD32 value = 0;
UWORD32 val_add = 0;
UWORD32 max_val1 = (1 << no_bits1) - 1;
UWORD32 max_val2 = (1 << no_bits2) - 1;
value = ixheaacd_read_bits_buf(it_bit_buff, no_bits1);
if (value == max_val1) {
val_add = ixheaacd_read_bits_buf(it_bit_buff, no_bits2);
value += val_add;
if (val_add == max_val2) {
val_add = ixheaacd_read_bits_buf(it_bit_buff, no_bits3);
value += val_add;
}
}
*ext_ele_value = value;
}
static VOID ixheaacd_get_usac_chan_conf(ia_usac_config_struct *pstr_usac_config,
UWORD32 ch_config_index) {
switch (ch_config_index) {
case 1:
pstr_usac_config->num_out_channels = 1;
pstr_usac_config->output_channel_pos[0] = BS_OUTPUT_CHANNEL_POS_C;
break;
case 2:
pstr_usac_config->num_out_channels = 2;
pstr_usac_config->output_channel_pos[0] = BS_OUTPUT_CHANNEL_POS_L;
pstr_usac_config->output_channel_pos[1] = BS_OUTPUT_CHANNEL_POS_R;
break;
default:
assert(0);
break;
}
}
VOID ixheaacd_sbr_config(ia_bit_buf_struct *it_bit_buff,
ia_usac_dec_sbr_config_struct *pstr_usac_sbr_config) {
pstr_usac_sbr_config->harmonic_sbr = ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_sbr_config->bs_inter_tes = ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_sbr_config->bs_pvc = ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_sbr_config->dflt_start_freq =
ixheaacd_read_bits_buf(it_bit_buff, 4);
pstr_usac_sbr_config->dflt_stop_freq = ixheaacd_read_bits_buf(it_bit_buff, 4);
pstr_usac_sbr_config->dflt_header_extra1 =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_sbr_config->dflt_header_extra2 =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_usac_sbr_config->dflt_header_extra1) {
pstr_usac_sbr_config->dflt_freq_scale =
ixheaacd_read_bits_buf(it_bit_buff, 2);
pstr_usac_sbr_config->dflt_alter_scale =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_sbr_config->dflt_noise_bands =
ixheaacd_read_bits_buf(it_bit_buff, 2);
}
if (pstr_usac_sbr_config->dflt_header_extra2) {
pstr_usac_sbr_config->dflt_limiter_bands =
ixheaacd_read_bits_buf(it_bit_buff, 2);
pstr_usac_sbr_config->dflt_limiter_gains =
ixheaacd_read_bits_buf(it_bit_buff, 2);
pstr_usac_sbr_config->dflt_interpol_freq =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_sbr_config->dflt_smoothing_mode =
ixheaacd_read_bits_buf(it_bit_buff, 1);
}
}
WORD32 ixheaacd_ext_element_config(
ia_bit_buf_struct *it_bit_buff,
ia_usac_dec_element_config_struct *pstr_usac_element_config,
UWORD8 *ptr_usac_ext_ele_payload, WORD32 *ptr_usac_ext_ele_payload_len,
WORD32 *preroll_flag) {
UWORD32 usac_ext_element_type, usac_ext_element_config_length, flag;
UWORD32 i;
ixheaacd_read_escape_value(it_bit_buff, &(usac_ext_element_type), 4, 8, 16);
ixheaacd_read_escape_value(it_bit_buff, &(usac_ext_element_config_length), 4,
8, 16);
if (usac_ext_element_config_length >= 768) return -1;
flag = ixheaacd_read_bits_buf(it_bit_buff, 1);
*ptr_usac_ext_ele_payload_len = 0;
if (flag) {
ixheaacd_read_escape_value(
it_bit_buff,
(UWORD32 *)(&(pstr_usac_element_config->usac_ext_eleme_def_len)), 8, 16,
0);
pstr_usac_element_config->usac_ext_eleme_def_len += 1;
} else {
pstr_usac_element_config->usac_ext_eleme_def_len = 0;
}
pstr_usac_element_config->usac_ext_elem_pld_frag =
ixheaacd_read_bits_buf(it_bit_buff, 1);
switch (usac_ext_element_type) {
case ID_EXT_ELE_FILL:
break;
case ID_EXT_ELE_AUDIOPREROLL:
*preroll_flag = 1;
break;
case ID_EXT_ELE_UNI_DRC:
for (i = 0; i < usac_ext_element_config_length; i++) {
ptr_usac_ext_ele_payload[i] = ixheaacd_read_bits_buf(it_bit_buff, 8);
}
*ptr_usac_ext_ele_payload_len = usac_ext_element_config_length;
break;
default:
if ((it_bit_buff->cnt_bits >> 3) < (WORD32)usac_ext_element_config_length)
return -1;
it_bit_buff->ptr_read_next += usac_ext_element_config_length;
it_bit_buff->cnt_bits -= (usac_ext_element_config_length << 3);
break;
}
return 0;
}
VOID ixheaacd_mps212_config(
ia_bit_buf_struct *it_bit_buff,
ia_usac_dec_mps_config_struct *pstr_usac_mps212_config,
WORD32 stereo_config_index) {
pstr_usac_mps212_config->bs_freq_res = ixheaacd_read_bits_buf(it_bit_buff, 3);
pstr_usac_mps212_config->bs_fixed_gain_dmx =
ixheaacd_read_bits_buf(it_bit_buff, 3);
pstr_usac_mps212_config->bs_temp_shape_config =
ixheaacd_read_bits_buf(it_bit_buff, 2);
pstr_usac_mps212_config->bs_decorr_config =
ixheaacd_read_bits_buf(it_bit_buff, 2);
pstr_usac_mps212_config->bs_high_rate_mode =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_mps212_config->bs_phase_coding =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_mps212_config->bs_ott_bands_phase_present =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (pstr_usac_mps212_config->bs_ott_bands_phase_present) {
pstr_usac_mps212_config->bs_ott_bands_phase =
ixheaacd_read_bits_buf(it_bit_buff, 5);
}
if (stereo_config_index > 1) {
pstr_usac_mps212_config->bs_residual_bands =
ixheaacd_read_bits_buf(it_bit_buff, 5);
pstr_usac_mps212_config->bs_ott_bands_phase =
max(pstr_usac_mps212_config->bs_ott_bands_phase,
pstr_usac_mps212_config->bs_residual_bands);
pstr_usac_mps212_config->bs_pseudo_lr =
ixheaacd_read_bits_buf(it_bit_buff, 1);
}
if (pstr_usac_mps212_config->bs_temp_shape_config == 2)
pstr_usac_mps212_config->bs_env_quant_mode =
ixheaacd_read_bits_buf(it_bit_buff, 1);
}
VOID ixheaacd_cpe_config(
ia_bit_buf_struct *it_bit_buff,
ia_usac_dec_element_config_struct *pstr_usac_element_config,
WORD32 sbr_ratio_index) {
pstr_usac_element_config->tw_mdct = ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_element_config->noise_filling =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (sbr_ratio_index > 0) {
ixheaacd_sbr_config(it_bit_buff,
&(pstr_usac_element_config->str_usac_sbr_config));
pstr_usac_element_config->stereo_config_index =
ixheaacd_read_bits_buf(it_bit_buff, 2);
} else {
pstr_usac_element_config->stereo_config_index = 0;
}
if (pstr_usac_element_config->stereo_config_index > 0)
ixheaacd_mps212_config(it_bit_buff,
&(pstr_usac_element_config->str_usac_mps212_config),
pstr_usac_element_config->stereo_config_index);
}
WORD32 ixheaacd_decoder_config(
ia_bit_buf_struct *it_bit_buff,
ia_usac_decoder_config_struct *pstr_usac_decoder_config,
WORD32 sbr_ratio_index, UINT32 *chan) {
UWORD32 elem_idx = 0;
UWORD32 err = 0;
ixheaacd_read_escape_value(
it_bit_buff, &(pstr_usac_decoder_config->num_elements), 4, 8, 16);
pstr_usac_decoder_config->num_elements += 1;
pstr_usac_decoder_config->preroll_flag = 0;
if (pstr_usac_decoder_config->num_elements > USAC_MAX_ELEMENTS) {
return -1;
}
for (elem_idx = 0; elem_idx < pstr_usac_decoder_config->num_elements;
elem_idx++) {
ia_usac_dec_element_config_struct *pstr_usac_element_config =
&(pstr_usac_decoder_config->str_usac_element_config[elem_idx]);
pstr_usac_decoder_config->usac_element_type[elem_idx] =
ixheaacd_read_bits_buf(it_bit_buff, 2);
switch (pstr_usac_decoder_config->usac_element_type[elem_idx]) {
case ID_USAC_SCE:
pstr_usac_element_config->tw_mdct =
ixheaacd_read_bits_buf(it_bit_buff, 1);
pstr_usac_element_config->noise_filling =
ixheaacd_read_bits_buf(it_bit_buff, 1);
if (sbr_ratio_index > 0)
ixheaacd_sbr_config(it_bit_buff,
&(pstr_usac_element_config->str_usac_sbr_config));
break;
case ID_USAC_CPE:
ixheaacd_cpe_config(it_bit_buff, pstr_usac_element_config,
sbr_ratio_index);
if (pstr_usac_element_config->stereo_config_index > 1 && *chan < 2)
return -1;
break;
case ID_USAC_LFE:
pstr_usac_element_config->tw_mdct = 0;
pstr_usac_element_config->noise_filling = 0;
break;
case ID_USAC_EXT:
err = ixheaacd_ext_element_config(
it_bit_buff, pstr_usac_element_config,
&pstr_usac_decoder_config->usac_ext_ele_payload_buf[elem_idx][0],
&pstr_usac_decoder_config->usac_ext_ele_payload_len[elem_idx],
&(pstr_usac_decoder_config->preroll_flag));
if (pstr_usac_decoder_config->usac_ext_ele_payload_len[elem_idx] > 0) {
pstr_usac_decoder_config->usac_ext_ele_payload_present[elem_idx] = 1;
} else {
pstr_usac_decoder_config->usac_ext_ele_payload_present[elem_idx] = 0;
}
if (err != 0) return -1;
break;
default:
return -1;
break;
}
}
return err;
}
WORD32 ixheaacd_config_extension(
ia_bit_buf_struct *it_bit_buff,
ia_usac_decoder_config_struct *pstr_usac_decoder_config) {
UWORD32 i, j;
UWORD32 num_config_extensions;
UWORD32 usac_config_ext_type, usac_config_ext_len;
ixheaacd_read_escape_value(it_bit_buff, &(num_config_extensions), 2, 4, 8);
num_config_extensions += 1;
if (USAC_MAX_CONFIG_EXTENSIONS < num_config_extensions) {
return -1;
}
pstr_usac_decoder_config->num_config_extensions = num_config_extensions;
memset(pstr_usac_decoder_config->usac_cfg_ext_info_len, 0,
USAC_MAX_CONFIG_EXTENSIONS * sizeof(WORD32));
memset(pstr_usac_decoder_config->usac_cfg_ext_info_present, 0,
USAC_MAX_CONFIG_EXTENSIONS * sizeof(WORD32));
for (j = 0; j < num_config_extensions; j++) {
UWORD32 tmp;
UWORD32 fill_byte_val = 0xa5;
ixheaacd_read_escape_value(it_bit_buff, &(usac_config_ext_type), 4, 8, 16);
ixheaacd_read_escape_value(it_bit_buff, &(usac_config_ext_len), 4, 8, 16);
switch (usac_config_ext_type) {
case ID_CONFIG_EXT_FILL:
for (i = 0; i < usac_config_ext_len; i++) {
fill_byte_val = ixheaacd_read_bits_buf(it_bit_buff, 8);
if (fill_byte_val != 0xa5) return -1;
}
break;
default:
if ((WORD32)usac_config_ext_len > (it_bit_buff->cnt_bits >> 3)) {
return -1;
}
if (ID_CONFIG_EXT_LOUDNESS_INFO == usac_config_ext_type) {
for (i = 0; i < usac_config_ext_len; i++) {
UWORD8 byte_val = ixheaacd_read_bits_buf(it_bit_buff, 8);
pstr_usac_decoder_config->usac_cfg_ext_info_buf[j][i] = byte_val;
}
pstr_usac_decoder_config->usac_cfg_ext_info_len[j] =
usac_config_ext_len;
pstr_usac_decoder_config->usac_cfg_ext_info_present[j] = 1;
} else {
for (i = 0; i < usac_config_ext_len; i++)
tmp = ixheaacd_read_bits_buf(it_bit_buff, 8);
}
break;
}
}
return 0;
}
WORD32 ixheaacd_config(ia_bit_buf_struct *it_bit_buff,
ia_usac_config_struct *pstr_usac_conf, UINT32 *chan) {
WORD32 tmp, err;
err = 0;
pstr_usac_conf->usac_sampling_frequency_index =
ixheaacd_read_bits_buf(it_bit_buff, 5);
if (pstr_usac_conf->usac_sampling_frequency_index == 0x1f)
pstr_usac_conf->usac_sampling_frequency =
ixheaacd_read_bits_buf(it_bit_buff, 24);
pstr_usac_conf->core_sbr_framelength_index =
ixheaacd_read_bits_buf(it_bit_buff, 3);
if (pstr_usac_conf->core_sbr_framelength_index > 4) return -1;
pstr_usac_conf->channel_configuration_index =
ixheaacd_read_bits_buf(it_bit_buff, 5);
if (pstr_usac_conf->channel_configuration_index >= 3) return -1;
if (pstr_usac_conf->channel_configuration_index == 0) {
UWORD32 i;
ixheaacd_read_escape_value(it_bit_buff,
(UWORD32 *)(&(pstr_usac_conf->num_out_channels)),
5, 8, 16);
if (BS_MAX_NUM_OUT_CHANNELS < pstr_usac_conf->num_out_channels) {
return -1;
}
for (i = 0; i < pstr_usac_conf->num_out_channels; i++)
pstr_usac_conf->output_channel_pos[i] =
ixheaacd_read_bits_buf(it_bit_buff, 5);
} else {
ixheaacd_get_usac_chan_conf(pstr_usac_conf,
pstr_usac_conf->channel_configuration_index);
}
err = ixheaacd_decoder_config(
it_bit_buff, &(pstr_usac_conf->str_usac_dec_config),
ixheaacd_sbr_ratio(pstr_usac_conf->core_sbr_framelength_index), chan);
if (err != 0) return -1;
tmp = ixheaacd_read_bits_buf(it_bit_buff, 1);
if (tmp) {
err = ixheaacd_config_extension(it_bit_buff,
&pstr_usac_conf->str_usac_dec_config);
if (err != 0) return -1;
}
return err;
}
VOID ixheaacd_conf_default(ia_usac_config_struct *pstr_usac_conf) {
WORD32 i;
pstr_usac_conf->num_out_channels = 0;
for (i = 0; i < BS_MAX_NUM_OUT_CHANNELS; i++)
pstr_usac_conf->output_channel_pos[i] = BS_OUTPUT_CHANNEL_POS_NA;
pstr_usac_conf->str_usac_dec_config.num_elements = 0;
for (i = 0; i < USAC_MAX_ELEMENTS; i++)
pstr_usac_conf->str_usac_dec_config.usac_element_type[i] = ID_USAC_INVALID;
return;
}