| /****************************************************************************** |
| * * |
| * 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 <stdlib.h> |
| #include <ixheaacd_type_def.h> |
| #include "ixheaacd_error_standards.h" |
| #include "ixheaacd_constants.h" |
| #include <ixheaacd_basic_ops32.h> |
| #include <ixheaacd_basic_ops16.h> |
| #include <ixheaacd_basic_ops40.h> |
| #include "ixheaacd_sbr_common.h" |
| |
| #include "ixheaacd_bitbuffer.h" |
| #include "ixheaacd_defines.h" |
| #include <ixheaacd_aac_rom.h> |
| |
| #include "ixheaacd_sbrdecsettings.h" |
| #include "ixheaacd_sbr_scale.h" |
| #include "ixheaacd_env_extr_part.h" |
| #include <ixheaacd_sbr_rom.h> |
| |
| #include "ixheaacd_lpp_tran.h" |
| #include "ixheaacd_hybrid.h" |
| #include "ixheaacd_ps_dec.h" |
| |
| #include "ixheaacd_env_extr.h" |
| #include "ixheaacd_common_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_drc_dec.h" |
| #include "ixheaacd_sbrdecoder.h" |
| #include "ixheaacd_block.h" |
| #include "ixheaacd_channel.h" |
| |
| #include "ixheaacd_adts.h" |
| #include "ixheaacd_audioobjtypes.h" |
| #include "ixheaacd_sbrdecoder.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_error_codes.h" |
| #include "ixheaacd_definitions.h" |
| #include "ixheaacd_adts_crc_check.h" |
| |
| #include "ixheaacd_headerdecode.h" |
| |
| #include "ixheaacd_interface.h" |
| #include "ixheaacd_info.h" |
| |
| #include "ixheaacd_config.h" |
| |
| #include "ixheaacd_struct.h" |
| #include "ixheaacd_function_selector.h" |
| |
| #include "ixheaacd_error_standards.h" |
| |
| #undef ALLOW_SMALL_FRAMELENGTH |
| |
| #define ALLOW_SMALL_FRAMELENGTH |
| #ifdef ALLOW_SMALL_FRAMELENGTH |
| #undef FRAME_SIZE_SMALL |
| #define FRAME_SIZE_SMALL 960 |
| #endif |
| |
| extern const WORD32 ixheaacd_sampl_freq_idx_table[17]; |
| |
| #define AAC_LC_PROFILE (2) |
| |
| #define ADTS_HEADER_LENGTH 7 |
| |
| #undef ALLOW_SMALL_FRAMELENGTH |
| |
| #define ALLOW_SMALL_FRAMELENGTH |
| |
| static PLATFORM_INLINE VOID |
| ixheaacd_aac_bytealign(struct ia_bit_buf_struct *it_bit_buff) { |
| WORD16 num_bit; |
| num_bit = (it_bit_buff->bit_pos + 1); |
| if (num_bit != 8) { |
| it_bit_buff->bit_pos = 7; |
| it_bit_buff->cnt_bits -= num_bit; |
| it_bit_buff->ptr_read_next += 1; |
| } |
| } |
| |
| WORD32 ixheaacd_read_pce_channel_info(WORD32 ch, WORD8 *ptr_is_cpe, |
| WORD8 *ptr_tag_select, |
| struct ia_bit_buf_struct *it_bit_buff) { |
| WORD32 num_ch = 0, i, tmp; |
| for (i = 0; i < ch; i++) { |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 5); |
| ptr_is_cpe[i] = (tmp & 0x10) >> 4; |
| |
| if (ptr_is_cpe[i]) { |
| num_ch += 2; |
| } else { |
| num_ch++; |
| } |
| |
| ptr_tag_select[i] = (tmp & 0xF); |
| } |
| return num_ch; |
| } |
| |
| VOID ixheaacd_read_pce_mixdown_data(struct ia_bit_buf_struct *it_bit_buff, |
| WORD32 mix_down_present, |
| WORD32 mix_down_element_no) { |
| WORD32 mix_down_flag = ixheaacd_read_bits_buf(it_bit_buff, mix_down_present); |
| if (mix_down_flag == 1) { |
| ixheaacd_read_bits_buf(it_bit_buff, mix_down_element_no); |
| } |
| } |
| |
| VOID ixheaacd_skip_bits(struct ia_bit_buf_struct *it_bit_buff, WORD32 bits, |
| WORD32 num_element) { |
| WORD32 i; |
| for (i = 0; i < num_element; i++) { |
| ixheaacd_read_bits_buf(it_bit_buff, bits); |
| } |
| } |
| |
| WORD32 ixheaacd_read_prog_config_element( |
| ia_program_config_struct *ptr_config_element, |
| struct ia_bit_buf_struct *it_bit_buff) { |
| WORD32 i, tmp; |
| WORD count = 0, num_ch = 0; |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 6); |
| |
| ptr_config_element->element_instance_tag = (tmp >> 2); |
| ptr_config_element->object_type = tmp & 0x3; |
| |
| if ((ptr_config_element->object_type + 1) != 2 |
| |
| && (ptr_config_element->object_type + 1) != 4 |
| |
| ) { |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } |
| |
| ptr_config_element->samp_freq_index = ixheaacd_read_bits_buf(it_bit_buff, 4); |
| if (ptr_config_element->samp_freq_index > 11) { |
| return IA_ENHAACPLUS_DEC_EXE_NONFATAL_DECODE_FRAME_ERROR; |
| } |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 21); |
| |
| count += ptr_config_element->num_front_channel_elements = (tmp >> 17); |
| count += ptr_config_element->num_side_channel_elements = |
| (tmp & 0x1E000) >> 13; |
| count += ptr_config_element->num_back_channel_elements = (tmp & 0x1E00) >> 9; |
| count += ptr_config_element->num_lfe_channel_elements = (tmp & 0x180) >> 7; |
| ptr_config_element->num_assoc_data_elements = (tmp & 0x70) >> 4; |
| count += ptr_config_element->num_valid_cc_elements = tmp & 0xF; |
| |
| if (count > MAX_BS_ELEMENT) { |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_STREAM_CHAN_GT_MAX; |
| } |
| |
| ixheaacd_read_pce_mixdown_data(it_bit_buff, 1, 4); |
| ixheaacd_read_pce_mixdown_data(it_bit_buff, 1, 4); |
| ixheaacd_read_pce_mixdown_data(it_bit_buff, 1, 3); |
| |
| num_ch += ixheaacd_read_pce_channel_info( |
| ptr_config_element->num_front_channel_elements, |
| ptr_config_element->front_element_is_cpe, |
| ptr_config_element->front_element_tag_select, it_bit_buff); |
| |
| num_ch += ixheaacd_read_pce_channel_info( |
| ptr_config_element->num_side_channel_elements, |
| ptr_config_element->side_element_is_cpe, |
| ptr_config_element->side_element_tag_select, it_bit_buff); |
| |
| num_ch += ixheaacd_read_pce_channel_info( |
| ptr_config_element->num_back_channel_elements, |
| ptr_config_element->back_element_is_cpe, |
| ptr_config_element->back_element_tag_select, it_bit_buff); |
| |
| num_ch += ptr_config_element->num_lfe_channel_elements; |
| |
| for (i = 0; i < (ptr_config_element->num_lfe_channel_elements); i++) { |
| ptr_config_element->lfe_element_tag_select[i] = |
| ixheaacd_read_bits_buf(it_bit_buff, 4); |
| } |
| |
| ptr_config_element->channels = num_ch; |
| |
| for (i = 0; i < (ptr_config_element->num_assoc_data_elements); i++) { |
| ixheaacd_read_bits_buf(it_bit_buff, 4); |
| } |
| |
| ixheaacd_skip_bits(it_bit_buff, 5, ptr_config_element->num_valid_cc_elements); |
| |
| { |
| WORD32 bits_to_read = ptr_config_element->alignment_bits; |
| if (bits_to_read <= it_bit_buff->bit_pos) { |
| bits_to_read = it_bit_buff->bit_pos - bits_to_read; |
| } else { |
| bits_to_read = 8 - (bits_to_read) + it_bit_buff->bit_pos; |
| } |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, bits_to_read); |
| } |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 8); |
| |
| ixheaacd_skip_bits(it_bit_buff, 8, tmp); |
| |
| return 0; |
| } |
| |
| WORD ixheaacd_decode_pce(struct ia_bit_buf_struct *it_bit_buff, |
| UWORD32 *ui_pce_found_in_hdr, |
| ia_program_config_struct *ptr_prog_config) { |
| WORD32 error_code = 0; |
| |
| if (*ui_pce_found_in_hdr == 1 || *ui_pce_found_in_hdr == 3) { |
| ia_program_config_struct ptr_config_element = {0}; |
| ptr_config_element.alignment_bits = ptr_prog_config->alignment_bits; |
| error_code = |
| ixheaacd_read_prog_config_element(&ptr_config_element, it_bit_buff); |
| *ui_pce_found_in_hdr = 3; |
| } else { |
| error_code = |
| ixheaacd_read_prog_config_element(ptr_prog_config, it_bit_buff); |
| *ui_pce_found_in_hdr = 2; |
| } |
| return error_code; |
| } |
| |
| static PLATFORM_INLINE WORD32 ixheaacd_get_adif_header( |
| ia_adif_header_struct *adif, struct ia_bit_buf_struct *it_bit_buff) { |
| WORD32 i; |
| WORD32 ret_val = 0, tmp; |
| |
| ixheaacd_read_bits_buf(it_bit_buff, 16); |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 17); |
| |
| if (tmp & 0x1) { |
| ixheaacd_skip_bits(it_bit_buff, 8, 9); |
| } |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 3); |
| |
| adif->bit_stream_type = (tmp & 0x1); |
| |
| ixheaacd_read_bits_buf(it_bit_buff, 23); |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 4); |
| |
| for (i = 0; i <= tmp; i++) { |
| if (adif->bit_stream_type == 0) { |
| ixheaacd_read_bits_buf(it_bit_buff, 20); |
| } |
| |
| adif->prog_config_present = 1; |
| adif->str_prog_config.alignment_bits = 7; |
| ret_val = |
| ixheaacd_read_prog_config_element(&adif->str_prog_config, it_bit_buff); |
| if (ret_val) { |
| return ret_val; |
| } |
| } |
| |
| return 0; |
| } |
| |
| WORD32 ixheaacd_find_syncword(ia_adts_header_struct *adts, |
| struct ia_bit_buf_struct *it_bit_buff) { |
| adts->sync_word = (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 12); |
| if (adts->sync_word == 0xFFF) { |
| return 0; |
| } |
| |
| while (1) { |
| ixheaacd_read_bidirection(it_bit_buff, -4); |
| if (it_bit_buff->cnt_bits < 12) { |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } |
| adts->sync_word = (WORD16)ixheaacd_read_bits_buf(it_bit_buff, 12); |
| if (adts->sync_word == 0xFFF) { |
| ixheaacd_read_bidirection(it_bit_buff, -12); |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } |
| } |
| } |
| |
| WORD32 ixheaacd_adtsframe(ia_adts_header_struct *adts, |
| struct ia_bit_buf_struct *it_bit_buff) { |
| WORD32 tmp; |
| |
| WORD32 crc_reg; |
| ia_adts_crc_info_struct *ptr_adts_crc_info = it_bit_buff->pstr_adts_crc_info; |
| ptr_adts_crc_info->crc_active = 1; |
| ptr_adts_crc_info->no_reg = 0; |
| ixheaacd_read_bidirection(it_bit_buff, -12); |
| crc_reg = ixheaacd_adts_crc_start_reg(ptr_adts_crc_info, it_bit_buff, |
| CRC_ADTS_HEADER_LEN); |
| ixheaacd_find_syncword(adts, it_bit_buff); |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 10); |
| |
| adts->id = (tmp & 0x200) >> 9; |
| adts->layer = (tmp & 0x180) >> 7; |
| adts->protection_absent = (tmp & 0x40) >> 6; |
| adts->profile = (tmp & 0x30) >> 4; |
| { adts->profile++; } |
| adts->samp_freq_index = (tmp & 0xF); |
| |
| if (((adts->profile != AAC_LC_PROFILE)) || (adts->samp_freq_index > 11)) |
| |
| { |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 21); |
| |
| adts->channel_configuration = (WORD32)(tmp & 0xE0000) >> 17; |
| |
| adts->aac_frame_length = (tmp & 0x1FFF); |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 13); |
| |
| adts->no_raw_data_blocks = (tmp & 0x3); |
| |
| ixheaacd_adts_crc_end_reg(ptr_adts_crc_info, it_bit_buff, crc_reg); |
| |
| if (adts->protection_absent == 0) { |
| ixheaacd_skip_bits(it_bit_buff, 16, adts->no_raw_data_blocks); |
| adts->crc_check = ixheaacd_read_bits_buf(it_bit_buff, 16); |
| |
| ptr_adts_crc_info->crc_active = 1; |
| ptr_adts_crc_info->file_value = adts->crc_check; |
| } else |
| ptr_adts_crc_info->crc_active = 0; |
| |
| ixheaacd_aac_bytealign(it_bit_buff); |
| return 0; |
| } |
| |
| WORD32 ixheaacd_get_samp_rate( |
| struct ia_bit_buf_struct *it_bit_buff, |
| ia_sampling_rate_info_struct *pstr_samp_rate_info, |
| ia_audio_specific_config_struct *pstr_audio_specific_config) { |
| WORD32 index; |
| WORD32 sampling_rate; |
| index = ixheaacd_read_bits_buf(it_bit_buff, 4); |
| pstr_audio_specific_config->samp_frequency_index = index; |
| |
| if (index == 0x0F) { |
| sampling_rate = ixheaacd_read_bits_buf(it_bit_buff, 24); |
| |
| if (pstr_audio_specific_config->audio_object_type != AOT_USAC) { |
| if (sampling_rate < 9391) |
| sampling_rate = 8000; |
| else if ((sampling_rate >= 9391) && (sampling_rate < 11502)) |
| sampling_rate = 11025; |
| else if ((sampling_rate >= 11502) && (sampling_rate < 13856)) |
| sampling_rate = 12000; |
| else if ((sampling_rate >= 13856) && (sampling_rate < 18783)) |
| sampling_rate = 16000; |
| else if ((sampling_rate >= 18783) && (sampling_rate < 23004)) |
| sampling_rate = 22050; |
| else if ((sampling_rate >= 23004) && (sampling_rate < 27713)) |
| sampling_rate = 24000; |
| else if ((sampling_rate >= 27713) && (sampling_rate < 37566)) |
| sampling_rate = 32000; |
| else if ((sampling_rate >= 37566) && (sampling_rate < 46009)) |
| sampling_rate = 44100; |
| else if ((sampling_rate >= 46009) && (sampling_rate < 55426)) |
| sampling_rate = 48000; |
| else if ((sampling_rate >= 55426) && (sampling_rate < 75132)) |
| sampling_rate = 64000; |
| else if ((sampling_rate >= 75132) && (sampling_rate < 92017)) |
| sampling_rate = 88200; |
| else if (sampling_rate >= 92017) |
| sampling_rate = 96000; |
| } |
| return sampling_rate; |
| } else if ((index > 12) && (index < 15)) { |
| return -1; |
| } else { |
| return ((pstr_samp_rate_info[index].sampling_frequency)); |
| } |
| } |
| static int ixheaacd_get_ld_sbr_header( |
| ia_bit_buf_struct *it_bit_buff, |
| ia_sbr_header_data_struct *sbr_header_data) { |
| WORD32 header_extra_1, header_extra_2; |
| UWORD32 tmp, bit_cnt = 0; |
| |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 16); |
| bit_cnt += 16; |
| |
| sbr_header_data->amp_res = (tmp & 0x8000) >> 15; |
| sbr_header_data->start_freq = (tmp & 0x7800) >> 11; |
| sbr_header_data->stop_freq = (tmp & 0x780) >> 7; |
| sbr_header_data->xover_band = (tmp & 0x70) >> 4; |
| header_extra_1 = (tmp & 0x0002) >> 1; |
| header_extra_2 = (tmp & 0x0001); |
| |
| if (header_extra_1) { |
| sbr_header_data->freq_scale = ixheaacd_read_bits_buf(it_bit_buff, 2); |
| sbr_header_data->alter_scale = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| sbr_header_data->noise_bands = ixheaacd_read_bits_buf(it_bit_buff, 2); |
| } else { |
| sbr_header_data->freq_scale = 2; |
| sbr_header_data->alter_scale = 1; |
| sbr_header_data->noise_bands = 2; |
| } |
| |
| if (header_extra_2) { |
| sbr_header_data->limiter_bands = ixheaacd_read_bits_buf(it_bit_buff, 2); |
| sbr_header_data->limiter_gains = ixheaacd_read_bits_buf(it_bit_buff, 2); |
| sbr_header_data->interpol_freq = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| sbr_header_data->smoothing_mode = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| } else { |
| sbr_header_data->limiter_bands = 2; |
| sbr_header_data->limiter_gains = 2; |
| sbr_header_data->interpol_freq = 1; |
| sbr_header_data->smoothing_mode = 1; |
| } |
| |
| return (bit_cnt); |
| } |
| |
| WORD32 ixheaacd_eld_sbr_header(ia_bit_buf_struct *it_bit_buff, WORD32 channels, |
| ia_sbr_header_data_struct *pstr_sbr_config) { |
| int num_sbr_header, el, bit_cnt = 0; |
| switch (channels) { |
| default: |
| num_sbr_header = 0; |
| break; |
| case 1: |
| case 2: |
| num_sbr_header = 1; |
| break; |
| case 3: |
| num_sbr_header = 2; |
| break; |
| case 4: |
| case 5: |
| case 6: |
| num_sbr_header = 3; |
| break; |
| case 7: |
| num_sbr_header = 4; |
| break; |
| } |
| for (el = 0; el < num_sbr_header; el++) { |
| bit_cnt = ixheaacd_get_ld_sbr_header(it_bit_buff, pstr_sbr_config); |
| } |
| return (bit_cnt); |
| } |
| |
| WORD32 ixheaacd_ga_hdr_dec(ia_aac_dec_state_struct *aac_state_struct, |
| WORD32 header_len, WORD32 *bytes_consumed, |
| ia_sampling_rate_info_struct *pstr_samp_rate_info, |
| struct ia_bit_buf_struct *it_bit_buff) { |
| WORD32 tmp; |
| WORD32 cnt_bits = it_bit_buff->cnt_bits; |
| WORD32 dummy = 0; |
| ia_audio_specific_config_struct *pstr_audio_specific_config; |
| |
| memset(aac_state_struct->ia_audio_specific_config, 0, |
| sizeof(ia_audio_specific_config_struct)); |
| |
| memset(&(aac_state_struct->eld_specific_config), 0, |
| sizeof(ia_eld_specific_config_struct)); |
| |
| pstr_audio_specific_config = aac_state_struct->ia_audio_specific_config; |
| |
| aac_state_struct->p_config->str_prog_config.alignment_bits = |
| it_bit_buff->bit_pos; |
| |
| aac_state_struct->audio_object_type = ixheaacd_read_bits_buf(it_bit_buff, 5); |
| |
| if (aac_state_struct->audio_object_type == 31) { |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 6); |
| aac_state_struct->audio_object_type = 32 + tmp; |
| } |
| pstr_audio_specific_config->audio_object_type = |
| aac_state_struct->audio_object_type; |
| |
| tmp = ixheaacd_get_samp_rate(it_bit_buff, pstr_samp_rate_info, |
| pstr_audio_specific_config); |
| pstr_audio_specific_config->sampling_frequency = tmp; |
| |
| if (tmp == -1) { |
| *bytes_consumed = 1; |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } else |
| aac_state_struct->sampling_rate = tmp; |
| aac_state_struct->p_config->ui_samp_freq = tmp; |
| |
| aac_state_struct->ch_config = ixheaacd_read_bits_buf(it_bit_buff, 4); |
| |
| pstr_audio_specific_config->channel_configuration = |
| aac_state_struct->ch_config; |
| |
| if (aac_state_struct->audio_object_type == AOT_SBR || |
| aac_state_struct->audio_object_type == AOT_PS) { |
| tmp = ixheaacd_get_samp_rate(it_bit_buff, pstr_samp_rate_info, |
| pstr_audio_specific_config); |
| aac_state_struct->sbr_present_flag = 1; |
| if (tmp == -1) { |
| *bytes_consumed = 1; |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } else |
| aac_state_struct->extension_samp_rate = tmp; |
| |
| aac_state_struct->audio_object_type = |
| ixheaacd_read_bits_buf(it_bit_buff, 5); |
| } |
| |
| if (((aac_state_struct->audio_object_type >= AOT_AAC_MAIN && |
| aac_state_struct->audio_object_type <= AOT_AAC_LTP) || |
| aac_state_struct->audio_object_type == AOT_AAC_SCAL || |
| aac_state_struct->audio_object_type == AOT_TWIN_VQ || |
| aac_state_struct->audio_object_type == AOT_ER_AAC_LD || |
| aac_state_struct->audio_object_type == AOT_ER_AAC_ELD || |
| aac_state_struct->audio_object_type == AOT_ER_AAC_LC) && |
| aac_state_struct->audio_object_type != AOT_USAC) |
| |
| { |
| aac_state_struct->usac_flag = 0; |
| |
| aac_state_struct->frame_len_flag = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| if (aac_state_struct->audio_object_type != AOT_ER_AAC_ELD) { |
| aac_state_struct->depends_on_core_coder = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| aac_state_struct->extension_flag = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| |
| if (aac_state_struct->ch_config == 0) { |
| WORD32 error_code; |
| error_code = ixheaacd_read_prog_config_element( |
| &aac_state_struct->p_config->str_prog_config, it_bit_buff); |
| if (error_code != 0) { |
| *bytes_consumed = 1; |
| return error_code; |
| } |
| aac_state_struct->p_config->ui_pce_found_in_hdr = 1; |
| } |
| } |
| if (aac_state_struct->audio_object_type == AOT_ER_AAC_ELD || |
| aac_state_struct->audio_object_type == AOT_ER_AAC_LD) { |
| aac_state_struct->eld_specific_config.aac_sect_data_resil_flag = 0; |
| aac_state_struct->eld_specific_config.aac_sf_data_resil_flag = 0; |
| aac_state_struct->eld_specific_config.aac_spect_data_resil_flag = 0; |
| aac_state_struct->eld_specific_config.ep_config = 0; |
| if ((aac_state_struct->extension_flag == 1) || |
| aac_state_struct->audio_object_type == AOT_ER_AAC_ELD) { |
| if (aac_state_struct->audio_object_type >= ER_OBJECT_START) { |
| aac_state_struct->eld_specific_config.aac_sect_data_resil_flag = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| aac_state_struct->eld_specific_config.aac_sf_data_resil_flag = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| aac_state_struct->eld_specific_config.aac_spect_data_resil_flag = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| if (aac_state_struct->audio_object_type != AOT_ER_AAC_ELD) |
| aac_state_struct->eld_specific_config.ep_config = |
| ixheaacd_read_bits_buf(it_bit_buff, 2); |
| else |
| aac_state_struct->eld_specific_config.ld_sbr_flag_present = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| } |
| } |
| } |
| } |
| if (pstr_audio_specific_config->audio_object_type == AOT_USAC) { |
| { |
| pstr_audio_specific_config->sbr_present_flag = 0; |
| pstr_audio_specific_config->ext_audio_object_type = 0; |
| } |
| |
| {{size_t tmp = 0xf; |
| UWORD32 i; |
| WORD32 err = 0; |
| |
| aac_state_struct->usac_flag = 1; |
| |
| ixheaacd_conf_default(&(pstr_audio_specific_config->str_usac_config)); |
| err = ixheaacd_config(it_bit_buff, |
| &(pstr_audio_specific_config->str_usac_config), |
| &(pstr_audio_specific_config->channel_configuration)); |
| if (err != 0) return err; |
| |
| pstr_audio_specific_config->sampling_frequency = |
| pstr_audio_specific_config->str_usac_config.usac_sampling_frequency; |
| |
| if (pstr_audio_specific_config->audio_object_type == AOT_USAC) { |
| pstr_audio_specific_config->sbr_present_flag = 1; |
| pstr_audio_specific_config->ext_audio_object_type = AOT_SBR; |
| pstr_audio_specific_config->ext_sampling_frequency = |
| pstr_audio_specific_config->sampling_frequency; |
| pstr_audio_specific_config->ext_samp_frequency_index = |
| pstr_audio_specific_config->samp_frequency_index; |
| |
| for (i = 0; i < sizeof(ixheaacd_sampl_freq_idx_table) / |
| sizeof(ixheaacd_sampl_freq_idx_table[0]); |
| i++) { |
| if (ixheaacd_sampl_freq_idx_table[i] == |
| (int)(pstr_audio_specific_config->sampling_frequency)) { |
| tmp = i; |
| break; |
| } |
| } |
| pstr_audio_specific_config->samp_frequency_index = (UINT32)tmp; |
| } else { |
| pstr_audio_specific_config->sbr_present_flag = 0; |
| } |
| } |
| } |
| |
| { |
| dummy = ixheaacd_skip_bits_buf(it_bit_buff, it_bit_buff->cnt_bits); |
| |
| if ((SIZE_T)it_bit_buff->ptr_read_next == |
| (SIZE_T)it_bit_buff->ptr_bit_buf_base) { |
| *bytes_consumed = ((WORD32)it_bit_buff->size) >> 3; |
| } else { |
| *bytes_consumed = (((((SIZE_T)it_bit_buff->ptr_read_next - |
| (SIZE_T)it_bit_buff->ptr_bit_buf_base)) |
| << 3) + |
| 7 - it_bit_buff->bit_pos + 7) >> |
| 3; |
| } |
| } |
| return 0; |
| } |
| |
| aac_state_struct->frame_length = FRAME_SIZE; |
| if (aac_state_struct->frame_len_flag) |
| #ifdef ALLOW_SMALL_FRAMELENGTH |
| aac_state_struct->frame_length = FRAME_SIZE_SMALL; |
| #else |
| return -1; |
| #endif |
| |
| if (aac_state_struct->extension_flag) |
| aac_state_struct->extension_flag_3 = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| |
| if (aac_state_struct->audio_object_type == AOT_ER_AAC_LD) |
| aac_state_struct->frame_length >>= 1; |
| |
| if (aac_state_struct->audio_object_type == AOT_ER_AAC_ELD) { |
| aac_state_struct->frame_length >>= 1; |
| if (aac_state_struct->eld_specific_config.ld_sbr_flag_present) { |
| aac_state_struct->eld_specific_config.ld_sbr_samp_rate = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| aac_state_struct->eld_specific_config.ld_sbr_crc_flag = |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| |
| ixheaacd_eld_sbr_header(it_bit_buff, aac_state_struct->ch_config, |
| &aac_state_struct->str_sbr_config); |
| |
| aac_state_struct->dwnsmp_signal = |
| !aac_state_struct->eld_specific_config.ld_sbr_samp_rate; |
| } |
| |
| ixheaacd_read_bits_buf(it_bit_buff, 1); |
| } |
| if (aac_state_struct->audio_object_type == AOT_ER_AAC_ELD) { |
| int ep_config = ixheaacd_read_bits_buf(it_bit_buff, 2); |
| if (ep_config == 2 || ep_config == 3) { |
| } |
| if (ep_config == 3) { |
| int direct_map = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| if (!direct_map) { |
| } |
| } |
| } |
| |
| tmp = (header_len * 8) - it_bit_buff->cnt_bits; |
| |
| if (aac_state_struct->audio_object_type != AOT_SBR && |
| (it_bit_buff->cnt_bits >= 16)) { |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 11); |
| |
| if (tmp == 0x2b7) { |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 5); |
| |
| if (tmp == AOT_SBR) { |
| WORD32 sbr_present_flag = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| if (sbr_present_flag) { |
| tmp = ixheaacd_get_samp_rate(it_bit_buff, pstr_samp_rate_info, |
| pstr_audio_specific_config); |
| if (tmp == -1) { |
| *bytes_consumed = 1; |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } else |
| aac_state_struct->extension_samp_rate = tmp; |
| |
| if (it_bit_buff->cnt_bits >= 12) { |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 11); |
| if (tmp == 0x548) { |
| tmp = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| } |
| } |
| } |
| } |
| } else if (aac_state_struct->bs_format == LOAS_BSFORMAT) { |
| ixheaacd_read_bidirection(it_bit_buff, -11); |
| } |
| } |
| |
| if (aac_state_struct->audio_object_type != AOT_AAC_LC && |
| aac_state_struct->audio_object_type != AOT_SBR && |
| aac_state_struct->audio_object_type != AOT_PS && |
| aac_state_struct->audio_object_type != AOT_ER_AAC_LC && |
| aac_state_struct->audio_object_type != AOT_ER_AAC_LD && |
| aac_state_struct->audio_object_type != AOT_ER_AAC_ELD && |
| aac_state_struct->audio_object_type != AOT_AAC_LTP) { |
| *bytes_consumed = 1; |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_AUDIOOBJECTTYPE_NOT_SUPPORTED; |
| } else { |
| if (aac_state_struct->bs_format == LOAS_BSFORMAT) { |
| *bytes_consumed = (cnt_bits - it_bit_buff->cnt_bits) >> 3; |
| if (it_bit_buff->bit_pos < 7) *bytes_consumed += 1; |
| |
| } else |
| *bytes_consumed = header_len; |
| |
| return 0; |
| } |
| } |
| |
| WORD32 ixheaacd_check_if_adts(ia_adts_header_struct *adts, |
| struct ia_bit_buf_struct *it_bit_buff, |
| WORD32 usr_max_ch) { |
| WORD32 max_frm_len_per_ch, result = 0; |
| |
| result = ixheaacd_adtsframe(adts, it_bit_buff); |
| |
| max_frm_len_per_ch = ixheaacd_mult32(768, (adts->no_raw_data_blocks + 1)); |
| |
| if (adts->channel_configuration != 0) |
| max_frm_len_per_ch = |
| ixheaacd_mult32(max_frm_len_per_ch, adts->channel_configuration); |
| else |
| max_frm_len_per_ch = max_frm_len_per_ch * usr_max_ch; |
| |
| return ((result != 0) || (adts->aac_frame_length < 8) || (adts->layer != 0) || |
| (adts->profile != AAC_LC_PROFILE)); |
| } |
| |
| IA_ERRORCODE ixheaacd_latm_header_decode( |
| ia_aac_dec_state_struct *aac_state_struct, |
| struct ia_bit_buf_struct *it_bit_buff, WORD32 *bytes_consumed, |
| ia_sampling_rate_info_struct *pstr_samp_rate_info) { |
| WORD32 sync; |
| IA_ERRORCODE result; |
| WORD32 next_sync, audio_mux_len_bytes_last; |
| WORD32 audio_mux_len_bits_last; |
| WORD32 sync_status = aac_state_struct->sync_status; |
| WORD32 bit_count = aac_state_struct->bit_count; |
| WORD32 cnt_bits = it_bit_buff->cnt_bits; |
| |
| *bytes_consumed = 0; |
| |
| aac_state_struct->bs_format = LOAS_BSFORMAT; |
| |
| if (sync_status == 0) { |
| do { |
| sync = ixheaacd_read_bits_buf(it_bit_buff, 11); |
| bit_count += 11; |
| while (sync != 0x2B7) { |
| sync = ((sync & 0x3ff) << 1) | ixheaacd_read_bits_buf(it_bit_buff, 1); |
| bit_count += 1; |
| if (it_bit_buff->cnt_bits < 13) { |
| ixheaacd_read_bidirection(it_bit_buff, -11); |
| *bytes_consumed = (cnt_bits - it_bit_buff->cnt_bits) / 8; |
| return (IA_ENHAACPLUS_DEC_INIT_NONFATAL_HEADER_NOT_AT_START); |
| } |
| } |
| |
| audio_mux_len_bytes_last = ixheaacd_read_bits_buf(it_bit_buff, 13); |
| bit_count += 13; |
| audio_mux_len_bits_last = audio_mux_len_bytes_last << 3; |
| if (it_bit_buff->cnt_bits >= (audio_mux_len_bits_last + 11)) { |
| ixheaacd_read_bidirection(it_bit_buff, audio_mux_len_bits_last); |
| bit_count += audio_mux_len_bits_last; |
| |
| next_sync = ixheaacd_read_bits_buf(it_bit_buff, 11); |
| bit_count += 11; |
| |
| if (next_sync == 0x2B7) { |
| ixheaacd_read_bidirection(it_bit_buff, |
| -(11 + audio_mux_len_bits_last + 13 + 11)); |
| bit_count -= 11 + audio_mux_len_bits_last + 13 + 11; |
| break; |
| } else { |
| ixheaacd_read_bidirection(it_bit_buff, |
| -(audio_mux_len_bits_last + 24 + 11 - 1)); |
| bit_count -= audio_mux_len_bits_last + 24 + 11 - 1; |
| } |
| |
| } else { |
| ixheaacd_read_bidirection(it_bit_buff, -(13 + 11)); |
| bit_count -= (13 + 11); |
| *bytes_consumed = (cnt_bits - it_bit_buff->cnt_bits) / 8; |
| return IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES; |
| } |
| } while (1); |
| |
| do { |
| WORD32 audio_mux_len_bytes_last; |
| WORD32 use_same_stream_mux; |
| |
| sync = ixheaacd_read_bits_buf(it_bit_buff, 11); |
| bit_count += 11; |
| |
| if (sync != 0x2b7) { |
| ixheaacd_read_bidirection(it_bit_buff, -25); |
| bit_count -= 11; |
| *bytes_consumed = (cnt_bits - it_bit_buff->cnt_bits) / 8; |
| return IA_ENHAACPLUS_DEC_INIT_NONFATAL_HEADER_NOT_AT_START; |
| } |
| |
| audio_mux_len_bytes_last = ixheaacd_read_bits_buf(it_bit_buff, 13); |
| bit_count += 13; |
| |
| use_same_stream_mux = ixheaacd_read_bits_buf(it_bit_buff, 1); |
| bit_count += 1; |
| |
| if (it_bit_buff->cnt_bits - (audio_mux_len_bytes_last * 8 - 1 + 11) < 0) { |
| ixheaacd_read_bidirection(it_bit_buff, -25); |
| bit_count -= 25; |
| aac_state_struct->bit_count = bit_count; |
| *bytes_consumed = (cnt_bits - it_bit_buff->cnt_bits) / 8; |
| return IA_ENHAACPLUS_DEC_INIT_NONFATAL_HEADER_NOT_AT_START; |
| } |
| |
| if (!use_same_stream_mux) { |
| ixheaacd_read_bidirection(it_bit_buff, -25); |
| bit_count -= 25; |
| sync_status = 1; |
| aac_state_struct->sync_status = sync_status; |
| break; |
| } |
| |
| ixheaacd_read_bidirection(it_bit_buff, audio_mux_len_bytes_last * 8 - 1); |
| bit_count += audio_mux_len_bytes_last * 8 - 1; |
| |
| } while (sync_status == 0); |
| |
| *bytes_consumed = (cnt_bits - it_bit_buff->cnt_bits) / 8; |
| { |
| ixheaacd_latm_struct latm_struct_element; |
| WORD32 sync; |
| memset(&latm_struct_element, 0, sizeof(ixheaacd_latm_struct)); |
| |
| sync = ixheaacd_read_bits_buf(it_bit_buff, 11); |
| if (sync == 0x2b7) { |
| result = ixheaacd_latm_audio_mux_element( |
| it_bit_buff, &latm_struct_element, aac_state_struct, |
| pstr_samp_rate_info); |
| if (result != 0) { |
| sync_status = 0; |
| aac_state_struct->sync_status = sync_status; |
| |
| *bytes_consumed += 1; |
| return result; |
| } |
| } |
| } |
| } |
| return IA_NO_ERROR; |
| } |
| |
| WORD32 ixheaacd_aac_headerdecode( |
| ia_exhaacplus_dec_api_struct *p_obj_exhaacplus_dec, UWORD8 *buffer, |
| WORD32 *bytes_consumed, |
| const ia_aac_dec_huffman_tables_struct *pstr_huffmann_tables) { |
| struct ia_bit_buf_struct it_bit_buff = {0}, *handle_bit_buff; |
| ia_adif_header_struct adif = {0}; |
| ia_adts_header_struct adts = {0}; |
| WORD32 result; |
| WORD32 header_len; |
| WORD32 sync = 0; |
| |
| WORD32 disable_sync = p_obj_exhaacplus_dec->aac_config.ui_disable_sync; |
| WORD32 is_ga_header = p_obj_exhaacplus_dec->aac_config.ui_mp4_flag; |
| |
| WORD32 loas_present = p_obj_exhaacplus_dec->aac_config.loas_present; |
| |
| ia_aac_dec_state_struct *aac_state_struct = |
| p_obj_exhaacplus_dec->pp_mem_aac[IA_ENHAACPLUS_DEC_PERSIST_IDX]; |
| WORD32 usr_max_ch = aac_state_struct->p_config->ui_max_channels; |
| |
| ia_sampling_rate_info_struct *pstr_samp_rate_info = |
| (ia_sampling_rate_info_struct *)&pstr_huffmann_tables |
| ->str_sample_rate_info[0]; |
| |
| if (buffer == 0) { |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL; |
| } |
| |
| header_len = aac_state_struct->ui_in_bytes; |
| |
| handle_bit_buff = ixheaacd_create_bit_buf(&it_bit_buff, (UWORD8 *)buffer, |
| (WORD16)header_len); |
| handle_bit_buff->cnt_bits += (header_len << 3); |
| handle_bit_buff->xaac_jmp_buf = &aac_state_struct->xaac_jmp_buf; |
| |
| if (is_ga_header == 1) { |
| return ixheaacd_ga_hdr_dec(aac_state_struct, header_len, bytes_consumed, |
| pstr_samp_rate_info, handle_bit_buff); |
| } else if (loas_present) { |
| return ixheaacd_latm_header_decode(aac_state_struct, &it_bit_buff, |
| bytes_consumed, pstr_samp_rate_info); |
| } |
| |
| else { |
| WORD32 header_found = 0; |
| WORD32 bytes_taken = -1; |
| WORD32 prev_offset = 0; |
| WORD32 run_once = 1; |
| if (disable_sync == 0) run_once = 0; |
| |
| do { |
| bytes_taken++; |
| buffer += (bytes_taken - prev_offset); |
| |
| prev_offset = bytes_taken; |
| |
| handle_bit_buff = ixheaacd_create_bit_buf( |
| &it_bit_buff, (UWORD8 *)buffer, (WORD16)(header_len - bytes_taken)); |
| handle_bit_buff->cnt_bits += (8 * (header_len - bytes_taken)); |
| |
| handle_bit_buff->pstr_adts_crc_info = &handle_bit_buff->str_adts_crc_info; |
| ixheaacd_adts_crc_open(handle_bit_buff->pstr_adts_crc_info); |
| |
| if ((buffer[0] == 'A') && (buffer[1] == 'D') && (buffer[2] == 'I') && |
| (buffer[3] == 'F')) { |
| adif.prog_config_present = 0; |
| result = ixheaacd_get_adif_header(&adif, handle_bit_buff); |
| if (result == 0) { |
| if (adif.prog_config_present == 1) { |
| aac_state_struct->p_config->ui_pce_found_in_hdr = 1; |
| aac_state_struct->p_config->str_prog_config = adif.str_prog_config; |
| } |
| aac_state_struct->s_adif_hdr_present = 1; |
| aac_state_struct->audio_object_type = |
| adif.str_prog_config.object_type; |
| aac_state_struct->sampling_rate = |
| pstr_samp_rate_info[adif.str_prog_config.samp_freq_index] |
| .sampling_frequency; |
| aac_state_struct->ch_config = adif.str_prog_config.channels; |
| bytes_taken += |
| ((handle_bit_buff->size - handle_bit_buff->cnt_bits) >> 3); |
| |
| header_found = 1; |
| aac_state_struct->frame_length = FRAME_SIZE; |
| if (aac_state_struct->audio_object_type == AOT_ER_AAC_LD) |
| aac_state_struct->frame_length >>= 1; |
| } |
| } |
| |
| else if ((sync = ixheaacd_read_bits_buf(&it_bit_buff, 12)) == 0xfff) { |
| result = ixheaacd_check_if_adts(&adts, handle_bit_buff, usr_max_ch); |
| if (result != 0) { |
| continue; |
| } |
| |
| if ((adts.aac_frame_length + ADTS_HEADER_LENGTH) < |
| (header_len - bytes_taken)) { |
| ia_adts_header_struct adts_loc = {0}; |
| |
| handle_bit_buff = ixheaacd_create_init_bit_buf( |
| &it_bit_buff, (UWORD8 *)(buffer + adts.aac_frame_length), |
| (WORD16)(header_len - adts.aac_frame_length)); |
| |
| adts_loc.sync_word = |
| (WORD16)ixheaacd_read_bits_buf(handle_bit_buff, 12); |
| |
| if (adts_loc.sync_word != 0xFFF) { |
| continue; |
| } |
| |
| result = |
| ixheaacd_check_if_adts(&adts_loc, handle_bit_buff, usr_max_ch); |
| if ((result != 0) || |
| (adts.samp_freq_index != adts_loc.samp_freq_index) || |
| (adts.channel_configuration != adts_loc.channel_configuration)) { |
| continue; |
| } |
| } |
| |
| { |
| WORD32 obj_type; |
| obj_type = adts.profile; |
| |
| aac_state_struct->audio_object_type = obj_type; |
| aac_state_struct->sampling_rate = |
| ((pstr_samp_rate_info[adts.samp_freq_index].sampling_frequency)); |
| aac_state_struct->ch_config = adts.channel_configuration; |
| aac_state_struct->s_adts_hdr_present = 1; |
| header_found = 1; |
| aac_state_struct->bs_format = ADTS_BSFORMAT; |
| aac_state_struct->frame_length = FRAME_SIZE; |
| if (aac_state_struct->audio_object_type == AOT_ER_AAC_LD) |
| aac_state_struct->frame_length >>= 1; |
| } |
| } else if (0x2b7 == (sync >> 1)) { |
| ixheaacd_read_bidirection(&it_bit_buff, -12); |
| result = |
| ixheaacd_latm_header_decode(aac_state_struct, &it_bit_buff, |
| bytes_consumed, pstr_samp_rate_info); |
| if (result != 0) { |
| if ((result == |
| (WORD32) |
| IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES) || |
| (result == |
| (WORD32)IA_ENHAACPLUS_DEC_INIT_FATAL_STREAM_CHAN_GT_MAX)) { |
| bytes_taken += *bytes_consumed; |
| *bytes_consumed = bytes_taken; |
| return result; |
| } else if (result == -1) |
| return -1; |
| else if (result == (WORD32)IA_FATAL_ERROR) |
| return IA_FATAL_ERROR; |
| else |
| bytes_taken += *bytes_consumed - 1; |
| continue; |
| } |
| header_found = 1; |
| aac_state_struct->bs_format = LOAS_BSFORMAT; |
| bytes_taken += *bytes_consumed; |
| } |
| |
| } while ((header_found == 0 && ((bytes_taken + 1) < (header_len - 68))) && |
| run_once != 1); |
| |
| if (header_found == 0 && disable_sync == 1) { |
| WORD32 err_code; |
| ixheaacd_read_bidirection(&it_bit_buff, -12); |
| err_code = |
| ixheaacd_ga_hdr_dec(aac_state_struct, header_len, bytes_consumed, |
| pstr_samp_rate_info, handle_bit_buff); |
| |
| if (err_code == 0) p_obj_exhaacplus_dec->aac_config.ui_mp4_flag = 1; |
| return err_code; |
| } |
| |
| switch (aac_state_struct->audio_object_type) { |
| case AOT_AAC_MAIN: |
| case AOT_AAC_LC: |
| case AOT_AAC_SSR: |
| case AOT_AAC_LTP: |
| case AOT_AAC_SCAL: |
| case AOT_TWIN_VQ: |
| case AOT_ER_AAC_LD: |
| case AOT_ER_AAC_ELD: |
| case AOT_ER_AAC_LC: |
| case AOT_USAC: |
| break; |
| default: |
| return IA_ENHAACPLUS_DEC_INIT_FATAL_AUDIOOBJECTTYPE_NOT_SUPPORTED; |
| } |
| |
| if (aac_state_struct->audio_object_type != AOT_USAC) |
| aac_state_struct->usac_flag = 0; |
| *bytes_consumed = bytes_taken; |
| |
| if ((handle_bit_buff->cnt_bits < 0) && |
| (handle_bit_buff->size < |
| (usr_max_ch * (IA_ENHAACPLUS_DEC_INP_BUF_SIZE << 3)))) { |
| return (WORD16)( |
| (WORD32)IA_ENHAACPLUS_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); |
| } |
| |
| if (header_found == 0) { |
| *bytes_consumed = bytes_taken + 1; |
| return IA_ENHAACPLUS_DEC_INIT_NONFATAL_HEADER_NOT_AT_START; |
| } else { |
| return 0; |
| } |
| } |
| } |
