/****************************************************************************** * * * 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 #include #include #include "ixheaac_constants.h" #include "ixheaac_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_cnst.h" #include "ixheaacd_ec_defines.h" #include "ixheaacd_ec_struct_def.h" #include "ixheaacd_channelinfo.h" #include "ixheaacd_channel.h" #include "ixheaacd_sbrdecoder.h" #include "ixheaacd_sbr_scale.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_hybrid.h" #include "ixheaacd_ps_dec.h" #include "ixheaacd_qmf_dec.h" #include "ixheaacd_mps_macro_def.h" #include "ixheaacd_mps_struct_def.h" #include "ixheaacd_mps_res_rom.h" #include "ixheaacd_mps_aac_struct.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 "ixheaac_sbr_const.h" #include "ixheaacd_main.h" #include "ixheaacd_ec.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, WORD32 total_channels, WORD8 *p_qshift_arr, UWORD8 slot_element, WORD32 channel); 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 heaac_mps_present) { 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, 0, NULL, 0, 0); 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; self->esbr_hq = usac_data->esbr_hq; self->enh_sbr = usac_data->enh_sbr; self->enh_sbr_ps = usac_data->enh_sbr_ps; self->ec_flag = usac_data->ec_flag; self->first_frame = usac_data->first_frame; self->frame_ok = usac_data->frame_ok; self->sbr_parse_complete = usac_data->sbr_parse_complete; 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, 0, 0, 1024, heaac_mps_present, self->ec_flag, self->first_frame); usac_data->sbr_mode = self->sbr_mode; return err_code; } IA_ERRORCODE ixheaacd_esbr_parse(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 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; jmp_buf local; ixheaacd_allocate_sbr_scr(&sbr_scratch_struct, usac_data->sbr_scratch_mem_base, NULL, 0, NULL, 0, 0); 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->pstr_sbr_channel[0]->str_sbr_dec.time_sample_buf = self->time_sample_buf[0]; self->pstr_sbr_channel[1]->str_sbr_dec.time_sample_buf = self->time_sample_buf[1]; self->sbr_mode = usac_data->sbr_mode; self->aot_usac_flag = usac_data->usac_flag; self->esbr_hq = usac_data->esbr_hq; self->enh_sbr = usac_data->enh_sbr; self->enh_sbr_ps = usac_data->enh_sbr_ps; self->ec_flag = usac_data->ec_flag; self->first_frame = usac_data->first_frame; self->frame_ok = usac_data->frame_ok; self->sbr_parse_err_flag = usac_data->sbr_parse_err_flag; if (usac_data->ec_flag) { err_code = setjmp(local); } if (err_code == 0) { if (usac_data->ec_flag) { it_bit_buff->xaac_jmp_buf = &local; } err_code = ixheaacd_parse_sbr(self, esbr_bit_str, &num_channels, self->frame_ok, &sbr_scratch_struct, it_bit_buff, audio_object_type); } else { usac_data->frame_ok = 0; self->frame_ok = usac_data->frame_ok; } usac_data->sbr_mode = self->sbr_mode; usac_data->sbr_parse_err_flag = self->sbr_parse_err_flag; usac_data->sbr_parse_complete = self->sbr_parse_complete; 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, WORD32 *frame_ok) { UWORD32 usac_ext_element_present; UWORD32 usac_ext_element_use_dft_length; UWORD32 pay_load_length; 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) { *frame_ok = 0; longjmp(*(it_bit_buff->xaac_jmp_buf), IA_XHEAAC_DEC_EXE_NONFATAL_INSUFFICIENT_INPUT_BYTES); } if (pay_load_length > 0) { if (usac_ext_element_payload_frag) 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_XHEAAC_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; UWORD32 ec_flag = p_state_aac_dec->p_config->ui_err_conceal; if (ec_flag) { if (it_bit_buff->cnt_bits < 16) { pstr_dec_data->str_usac_data.frame_ok = 0; } if (pstr_dec_data->str_usac_data.frame_ok == 1) { pstr_usac_data->usac_independency_flg = ixheaacd_read_bits_buf(it_bit_buff, 1); } } else { pstr_usac_data->usac_independency_flg = ixheaacd_read_bits_buf(it_bit_buff, 1); } if (pstr_usac_data->ec_flag && pstr_dec_data->str_usac_data.frame_ok == 1) { if (!(pstr_usac_data->last_frame_ok) && !(pstr_usac_data->usac_independency_flg)) { pstr_dec_data->str_usac_data.frame_ok = 0; } else { pstr_dec_data->str_usac_data.frame_ok = 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; jmp_buf local; if (ec_flag) { err = setjmp(local); } pstr_usac_data->esbr_bit_str[0].no_elements = 0; pstr_usac_data->esbr_bit_str[1].no_elements = 0; if (!err) { if (ec_flag) { it_bit_buff->xaac_jmp_buf = &local; } 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 (!ec_flag) { if (ch_offset >= MAX_NUM_CHANNELS_USAC_LVL2) return -1; if (num_ch_out > MAX_NUM_CHANNELS_USAC_LVL2) return -1; } else { if ((ch_offset >= MAX_NUM_CHANNELS_USAC_LVL2) || (num_ch_out > MAX_NUM_CHANNELS_USAC_LVL2)) { pstr_usac_data->frame_ok = 0; } } err = ixheaacd_core_coder_data(ele_id, pstr_usac_data, elem_idx, ch_offset, it_bit_buff, nr_core_coder_channels); if (!ec_flag) { if (err != 0) return -1; } else { if (err != 0) pstr_usac_data->frame_ok = 0; } 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)) { if (ec_flag) { pstr_usac_data->first_frame = p_state_aac_dec->first_frame; } err_code = ixheaacd_esbr_process( pstr_usac_data, it_bit_buff, stereo_config_index, nr_core_coder_channels, pstr_dec_data->str_frame_data.str_audio_specific_config.audio_object_type, p_state_aac_dec->heaac_mps_handle.heaac_mps_present); if (!ec_flag) { if (err_code < 0) return err_code; } else { if (err_code < 0) pstr_usac_data->frame_ok = 0; } } 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; if (!ec_flag && pstr_usac_data->frame_ok == 1) { if (ec_flag) { it_bit_buff->xaac_jmp_buf = &local; } 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; } p_state_aac_dec->mps_dec_handle.band_count[0] = pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[0]->str_sbr_dec.band_count; p_state_aac_dec->mps_dec_handle.band_count[1] = pstr_usac_data->pstr_esbr_dec->pstr_sbr_channel[1]->str_sbr_dec.band_count; 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]); } if ((!ec_flag || !p_state_aac_dec->first_frame) && p_state_aac_dec->mps_dec_handle.mps_init_done == 1) { err = ixheaacd_mps_apply(&p_state_aac_dec->mps_dec_handle, ptr_inp, pstr_usac_data->time_sample_vector); if (!ec_flag) { if (err) return err; } else { if (err) pstr_usac_data->frame_ok = 0; } } if (ec_flag) { pstr_usac_data->first_frame = p_state_aac_dec->first_frame; err_code = ixheaacd_esbr_parse( pstr_usac_data, it_bit_buff, stereo_config_index, nr_core_coder_channels, pstr_dec_data->str_frame_data.str_audio_specific_config.audio_object_type); if (err_code < 0) pstr_usac_data->frame_ok = 0; if (ec_flag) { err = setjmp(local); } if (err == 0 && pstr_usac_data->frame_ok == 1) { if (ec_flag) { it_bit_buff->xaac_jmp_buf = &local; } err = ixheaacd_mps_frame_parsing(&p_state_aac_dec->mps_dec_handle, pstr_usac_data->usac_independency_flg, it_bit_buff); if (err) pstr_usac_data->frame_ok = 0; } else { pstr_usac_data->frame_ok = 0; if (p_state_aac_dec->mps_dec_handle.num_parameter_sets_prev < 1) { p_state_aac_dec->mps_dec_handle.num_parameter_sets_prev = 1; } } } } else if ((pstr_usac_data->sbr_ratio_idx > 0) && (pstr_usac_data->esbr_bit_str[0].no_elements != 0) && ec_flag) { pstr_usac_data->first_frame = p_state_aac_dec->first_frame; err_code = ixheaacd_esbr_parse( pstr_usac_data, it_bit_buff, stereo_config_index, nr_core_coder_channels, pstr_dec_data->str_frame_data.str_audio_specific_config.audio_object_type); if (err_code < 0) pstr_usac_data->frame_ok = 0; } if (ec_flag) { p_state_aac_dec->first_frame = 0; } 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]; if (pstr_usac_data->frame_ok) { 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, &pstr_usac_data->frame_ok); if (!ec_flag) { if (err != 0) return err; } else { if (err) pstr_usac_data->frame_ok = 0; } } break; } default: return -1; break; } } } pstr_usac_data->last_frame_ok = pstr_usac_data->frame_ok; return 0; }