| /****************************************************************************** |
| * * |
| * 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 <string.h> |
| #include <ixheaacd_type_def.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_lt_predict.h" |
| |
| #include "ixheaacd_channelinfo.h" |
| #include "ixheaacd_sbr_common.h" |
| #include "ixheaacd_drc_data_struct.h" |
| #include "ixheaacd_drc_dec.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_type_def.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_sbrdecoder.h" |
| #include "ixheaacd_mps_polyphase.h" |
| #include "ixheaacd_sbr_const.h" |
| #include "ixheaacd_main.h" |
| |
| #include "ixheaacd_arith_dec.h" |
| |
| #include "ixheaacd_config.h" |
| #include "ixheaacd_struct.h" |
| |
| #include "ixheaacd_create.h" |
| |
| #include "ixheaacd_dec_main.h" |
| |
| VOID ixheaacd_samples_sat(WORD8 *outbuffer, WORD32 num_samples_out, |
| WORD32 pcmsize, FLOAT32 (*out_samples)[4096], |
| WORD32 *out_bytes, WORD32 num_channel_out) { |
| WORD32 num; |
| WORD32 i; |
| WORD64 write_local; |
| |
| WORD16 *out_buf = (WORD16 *)outbuffer; |
| |
| num = num_channel_out * num_samples_out; |
| |
| if (pcmsize == 16) { |
| for (i = 0; i < num; i++) { |
| write_local = |
| ((WORD64)(out_samples[i % num_channel_out][i / num_channel_out])); |
| |
| if (write_local > 32767) { |
| write_local = 32767; |
| } |
| if (write_local < -32768) { |
| write_local = -32768; |
| } |
| out_buf[i] = (WORD16)write_local; |
| } |
| |
| *out_bytes = num * sizeof(WORD16); |
| } else { |
| WORD8 *out_24bit = (WORD8 *)out_buf; |
| for (i = 0; i < num; i++) { |
| write_local = ((WORD64)( |
| out_samples[i % num_channel_out][i / num_channel_out] * 256)); |
| |
| if (write_local > 8388607) { |
| write_local = 8388607; |
| } |
| if (write_local < -8388608) { |
| write_local = -8388608; |
| } |
| *out_24bit++ = (WORD32)write_local & 0xff; |
| *out_24bit++ = ((WORD32)write_local >> 8) & 0xff; |
| *out_24bit++ = ((WORD32)write_local >> 16) & 0xff; |
| } |
| |
| *out_bytes = num * 3 * sizeof(WORD8); |
| } |
| } |
| |
| /* audio pre roll frame parsing*/ |
| static WORD32 ixheaacd_audio_preroll_parsing(ia_dec_data_struct *pstr_dec_data, |
| UWORD8 *conf_buf, |
| WORD32 *preroll_units, |
| WORD32 *preroll_frame_offset) { |
| ia_bit_buf_struct *temp_buff = |
| (ia_bit_buf_struct *)&(pstr_dec_data->dec_bit_buf); |
| WORD32 independency_flag = 0; |
| WORD32 ext_ele_present = 0; |
| WORD32 ext_ele_use_dflt_len = 0; |
| WORD32 ext_ele_payload_len = 0; |
| |
| WORD32 apply_crossfade = 0; |
| WORD32 un_used_val = 0; |
| WORD32 num_pre_roll_frames = 0; |
| |
| WORD32 frame_idx = 0; |
| WORD32 frame_len[18] = { |
| 0}; // max of escapedValue(2, 4, 0) i.e. 2^2 -1 + 2^4 -1; |
| WORD32 temp = 0; |
| |
| WORD32 config_len = 0; |
| WORD32 loop; |
| |
| if (pstr_dec_data->str_frame_data.str_audio_specific_config.str_usac_config |
| .str_usac_dec_config.usac_element_type[0] == ID_USAC_EXT) { |
| temp = ixheaacd_show_bits_buf(temp_buff, 3); |
| independency_flag = (temp >> 2) & 0x1; |
| ext_ele_present = (temp >> 1) & 0x1; |
| |
| if (ext_ele_present) { |
| ext_ele_use_dflt_len = temp & 0x1; // ixheaacd_read_bit(&temp_buff, 1); |
| if (ext_ele_use_dflt_len != 0) return 0; |
| |
| un_used_val = ixheaacd_read_bits_buf(temp_buff, 3); |
| |
| ext_ele_payload_len = ixheaacd_read_bits_buf(temp_buff, 8); |
| |
| if (ext_ele_payload_len == 255) { |
| WORD32 val_add = 0; |
| val_add = ixheaacd_read_bits_buf(temp_buff, 16); |
| ext_ele_payload_len = |
| (UWORD32)((WORD32)ext_ele_payload_len + val_add - 2); |
| } |
| |
| // escapedValue(4, 4, 8); |
| config_len = ixheaacd_read_bits_buf(temp_buff, 4); |
| if (config_len == 15) { |
| WORD32 val_add = 0; |
| val_add = ixheaacd_read_bits_buf(temp_buff, 4); |
| config_len += val_add; |
| if (val_add == 15) { |
| WORD32 val_add1 = 0; |
| val_add1 = ixheaacd_read_bits_buf(temp_buff, 8); |
| config_len += val_add1; |
| } |
| } |
| |
| for (loop = 0; loop < config_len; loop++) |
| conf_buf[loop] = ixheaacd_read_bits_buf(temp_buff, 8); |
| |
| apply_crossfade = ixheaacd_read_bits_buf(temp_buff, 1); |
| un_used_val = ixheaacd_read_bits_buf(temp_buff, 1); // reserverd |
| |
| // escapedValue(2, 4, 0); |
| num_pre_roll_frames = ixheaacd_read_bits_buf(temp_buff, 2); |
| if (num_pre_roll_frames == 3) { |
| WORD32 val_add = 0; |
| val_add = ixheaacd_read_bits_buf(temp_buff, 4); |
| num_pre_roll_frames += val_add; |
| } |
| |
| for (frame_idx = 0; frame_idx < num_pre_roll_frames; frame_idx++) { |
| WORD32 au_len = 0; // escapedValued(16,16,0) |
| au_len = ixheaacd_read_bits_buf(temp_buff, 16); |
| if (au_len == 65535) { |
| WORD32 val_add = ixheaacd_read_bits_buf(temp_buff, 16); |
| au_len += val_add; |
| } |
| preroll_frame_offset[frame_idx] = temp_buff->size - temp_buff->cnt_bits; |
| frame_len[frame_idx] = |
| (8 * au_len) + (temp_buff->size - temp_buff->cnt_bits); |
| temp_buff->ptr_read_next += au_len; |
| temp_buff->cnt_bits -= au_len * 8; |
| } |
| } |
| } |
| *preroll_units = num_pre_roll_frames; |
| return config_len; |
| } |
| |
| WORD32 ixheaacd_dec_main(VOID *temp_handle, WORD8 *inbuffer, WORD8 *outbuffer, |
| WORD32 *out_bytes, WORD32 frames_done, WORD32 pcmsize, |
| WORD32 *num_channel_out) { |
| WORD32 err = 0; |
| ia_exhaacplus_dec_api_struct *handle = |
| (ia_exhaacplus_dec_api_struct *)temp_handle; |
| ia_aac_dec_state_struct *aac_dec_handle = handle->p_state_aac; |
| |
| WORD32 tmp; |
| ia_audio_specific_config_struct *pstr_audio_specific_config = |
| (ia_audio_specific_config_struct *) |
| aac_dec_handle->ia_audio_specific_config; |
| WORD32 suitable_tracks = 1; |
| WORD32 num_samples_out; |
| ia_dec_data_struct *pstr_dec_data; |
| UWORD8 config[285]; // max of escapedValue(4, 4, 8) i.e. 2^4 -1 + 2^4 -1 + |
| // 2^8 -1; |
| WORD32 config_len; |
| WORD32 delay; |
| WORD preroll_frame_offset[4] = {0}; |
| WORD preroll_units = -1; |
| WORD32 access_units = 0; |
| |
| if (frames_done == 0) { |
| if ((pstr_audio_specific_config->channel_configuration > 2) || |
| (pstr_audio_specific_config->channel_configuration == 0)) { |
| return -1; |
| } |
| |
| pstr_dec_data = (ia_dec_data_struct *)aac_dec_handle->pstr_dec_data; |
| |
| tmp = pstr_audio_specific_config->channel_configuration; |
| |
| suitable_tracks = |
| ixheaacd_frm_data_init(pstr_audio_specific_config, pstr_dec_data); |
| |
| pstr_audio_specific_config->channel_configuration = tmp; |
| |
| if (suitable_tracks <= 0) { |
| return -1; |
| } |
| } |
| |
| { |
| pstr_dec_data = (ia_dec_data_struct *)aac_dec_handle->pstr_dec_data; |
| |
| if (frames_done == 0) { |
| WORD32 delay; |
| delay = ixheaacd_decode_create( |
| handle, pstr_dec_data, |
| pstr_dec_data->str_frame_data.scal_out_select + 1); |
| pstr_dec_data->dec_bit_buf.max_size = |
| handle->p_mem_info_aac[IA_MEMTYPE_INPUT].ui_size; |
| if (delay == -1) return -1; |
| *num_channel_out = pstr_dec_data->str_frame_data.scal_out_num_channels; |
| return 0; |
| } |
| |
| pstr_dec_data->dec_bit_buf.ptr_bit_buf_base = (UWORD8 *)inbuffer; |
| pstr_dec_data->dec_bit_buf.size = aac_dec_handle->ui_in_bytes << 3; |
| pstr_dec_data->dec_bit_buf.ptr_bit_buf_end = |
| (UWORD8 *)inbuffer + aac_dec_handle->ui_in_bytes - 1; |
| pstr_dec_data->dec_bit_buf.ptr_read_next = (UWORD8 *)inbuffer; |
| pstr_dec_data->dec_bit_buf.bit_pos = 7; |
| pstr_dec_data->dec_bit_buf.cnt_bits = pstr_dec_data->dec_bit_buf.size; |
| |
| pstr_dec_data->str_usac_data.usac_flag = aac_dec_handle->usac_flag; |
| if (pstr_dec_data->dec_bit_buf.size > pstr_dec_data->dec_bit_buf.max_size) |
| pstr_dec_data->dec_bit_buf.max_size = pstr_dec_data->dec_bit_buf.size; |
| /* audio pre roll frame parsing*/ |
| |
| do { |
| config_len = 0; |
| if (access_units == 0 && |
| pstr_audio_specific_config->str_usac_config.str_usac_dec_config |
| .preroll_flag) { |
| config_len = ixheaacd_audio_preroll_parsing(pstr_dec_data, &config[0], |
| &preroll_units, |
| &preroll_frame_offset[0]); |
| } |
| |
| if (config_len != 0) { |
| /* updating the config parameters*/ |
| ia_bit_buf_struct *config_bit_buf = |
| (ia_bit_buf_struct *)malloc(sizeof(ia_bit_buf_struct)); |
| |
| config_bit_buf->ptr_bit_buf_base = config; |
| config_bit_buf->size = config_len << 3; |
| config_bit_buf->ptr_read_next = config_bit_buf->ptr_bit_buf_base; |
| config_bit_buf->ptr_bit_buf_end = (UWORD8 *)config + config_len; |
| config_bit_buf->bit_pos = 7; |
| config_bit_buf->cnt_bits = config_bit_buf->size; |
| |
| suitable_tracks = |
| ixheaacd_frm_data_init(pstr_audio_specific_config, pstr_dec_data); |
| |
| if (suitable_tracks <= 0) return -1; |
| |
| /* call codec re-configure*/ |
| err = ixheaacd_config( |
| config_bit_buf, &(pstr_dec_data->str_frame_data |
| .str_audio_specific_config.str_usac_config), |
| &(pstr_audio_specific_config |
| ->channel_configuration) /*&pstr_audio_specific_config->str_usac_config*/); |
| free(config_bit_buf); |
| if (err != 0) return -1; |
| |
| delay = ixheaacd_decode_create( |
| handle, pstr_dec_data, |
| pstr_dec_data->str_frame_data.scal_out_select + 1); |
| if (delay == -1) return -1; |
| *num_channel_out = pstr_dec_data->str_frame_data.scal_out_num_channels; |
| } |
| |
| pstr_dec_data->dec_bit_buf.ptr_bit_buf_base = (UWORD8 *)inbuffer; |
| pstr_dec_data->dec_bit_buf.size = aac_dec_handle->ui_in_bytes << 3; |
| pstr_dec_data->dec_bit_buf.ptr_bit_buf_end = |
| (UWORD8 *)inbuffer + aac_dec_handle->ui_in_bytes - 1; |
| pstr_dec_data->dec_bit_buf.ptr_read_next = (UWORD8 *)inbuffer; |
| pstr_dec_data->dec_bit_buf.bit_pos = 7; |
| pstr_dec_data->dec_bit_buf.cnt_bits = pstr_dec_data->dec_bit_buf.size; |
| |
| pstr_dec_data->str_usac_data.usac_flag = aac_dec_handle->usac_flag; |
| |
| if (preroll_frame_offset[access_units]) { |
| pstr_dec_data->dec_bit_buf.cnt_bits = |
| pstr_dec_data->dec_bit_buf.size - |
| preroll_frame_offset[access_units]; |
| pstr_dec_data->dec_bit_buf.bit_pos = |
| 7 - preroll_frame_offset[access_units] % 8; |
| pstr_dec_data->dec_bit_buf.ptr_read_next = |
| pstr_dec_data->dec_bit_buf.ptr_read_next + |
| (preroll_frame_offset[access_units] / 8); |
| } |
| |
| // temp_read=ixheaacd_show_bits_buf(pstr_dec_data->dec_bit_buf,preroll_frame_offset[access_unit]); |
| |
| err = |
| ixheaacd_usac_process(pstr_dec_data, num_channel_out, aac_dec_handle); |
| |
| switch (pstr_dec_data->str_usac_data.sbr_ratio_idx) { |
| case 0: |
| handle->aac_config.ui_sbr_mode = 0; |
| break; |
| case 1: |
| handle->aac_config.ui_sbr_mode = 1; |
| break; |
| case 2: |
| handle->aac_config.ui_sbr_mode = 1; |
| break; |
| case 3: |
| handle->aac_config.ui_sbr_mode = 3; |
| break; |
| |
| default: |
| handle->aac_config.ui_sbr_mode = 0; |
| } |
| |
| if (err == -1) return err; |
| |
| num_samples_out = pstr_dec_data->str_usac_data.output_samples; |
| |
| ixheaacd_samples_sat(outbuffer, num_samples_out, pcmsize, |
| pstr_dec_data->str_usac_data.time_sample_vector, |
| out_bytes, *num_channel_out); |
| pstr_audio_specific_config->str_usac_config.str_usac_dec_config |
| .usac_ext_gain_payload_len = |
| pstr_dec_data->str_frame_data.str_audio_specific_config |
| .str_usac_config.str_usac_dec_config.usac_ext_gain_payload_len; |
| memcpy(pstr_audio_specific_config->str_usac_config.str_usac_dec_config |
| .usac_ext_gain_payload_buf, |
| pstr_dec_data->str_frame_data.str_audio_specific_config |
| .str_usac_config.str_usac_dec_config.usac_ext_gain_payload_buf, |
| pstr_dec_data->str_frame_data.str_audio_specific_config |
| .str_usac_config.str_usac_dec_config |
| .usac_ext_gain_payload_len * |
| sizeof(WORD8)); |
| |
| access_units++; |
| preroll_units--; |
| } while (preroll_units >= 0); |
| } |
| |
| return err; |
| } |
