| /****************************************************************************** |
| * * |
| * 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; |
| } |
