| /****************************************************************************** |
| * |
| * 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 <math.h> |
| #include "impd_type_def.h" |
| #include "impd_memory_standards.h" |
| #include "impd_drc_bitbuffer.h" |
| #include "impd_drc_extr_delta_coded_info.h" |
| #include "impd_drc_common.h" |
| #include "impd_drc_struct.h" |
| #include "impd_drc_interface.h" |
| |
| #include "impd_drc_bitstream_dec_api.h" |
| #include "impd_drc_gain_dec.h" |
| #include "impd_drc_filter_bank.h" |
| #include "impd_drc_multi_band.h" |
| #include "impd_drc_process_audio.h" |
| #include "impd_parametric_drc_dec.h" |
| #include "impd_drc_eq.h" |
| #include "impd_drc_gain_decoder.h" |
| #include "impd_drc_selection_process.h" |
| |
| #include "impd_drc_peak_limiter.h" |
| #include "impd_drc_api_struct_def.h" |
| |
| #define BITSTREAM_FILE_FORMAT_SPLIT 1 |
| |
| static WORD32 impd_down_mix( |
| ia_drc_sel_proc_output_struct *uni_drc_sel_proc_output, |
| FLOAT32 **input_audio, WORD32 frame_len) { |
| WORD32 num_base_ch = uni_drc_sel_proc_output->base_channel_count; |
| WORD32 num_target_ch = uni_drc_sel_proc_output->target_channel_count; |
| WORD32 i, i_ch, o_ch; |
| FLOAT32 tmp_out[MAX_CHANNEL_COUNT]; |
| |
| if (uni_drc_sel_proc_output->downmix_matrix_present == 0) return 0; |
| |
| if (input_audio == 0) return 0; |
| |
| if (num_target_ch > MAX_CHANNEL_COUNT) return -1; |
| |
| if (num_target_ch > num_base_ch) return -1; |
| |
| for (i = 0; i < frame_len; i++) { |
| for (o_ch = 0; o_ch < num_target_ch; o_ch++) { |
| tmp_out[o_ch] = 0.0f; |
| for (i_ch = 0; i_ch < num_base_ch; i_ch++) { |
| tmp_out[o_ch] += input_audio[i_ch][i] * |
| uni_drc_sel_proc_output->downmix_matrix[i_ch][o_ch]; |
| } |
| } |
| for (o_ch = 0; o_ch < num_target_ch; o_ch++) { |
| input_audio[o_ch][i] = tmp_out[o_ch]; |
| } |
| for (; o_ch < num_base_ch; o_ch++) { |
| input_audio[o_ch][i] = 0.0f; |
| } |
| } |
| |
| return 0; |
| } |
| |
| WORD32 impd_init_process_audio_main_qmf(ia_drc_api_struct *p_obj_drc) |
| |
| { |
| WORD32 error = 0, i, j, num_samples_per_channel; |
| FLOAT32 *input_buffer; |
| FLOAT32 *output_buffer; |
| FLOAT32 *audio_io_buf_real[10]; |
| FLOAT32 *audio_io_buf_imag[10]; |
| FLOAT32 *scratch_buffer; |
| WORD32 last_frame = 0; |
| scratch_buffer = (FLOAT32 *)p_obj_drc->pp_mem[1]; |
| input_buffer = (FLOAT32 *)p_obj_drc->pp_mem[2]; |
| output_buffer = (FLOAT32 *)p_obj_drc->pp_mem[3]; |
| |
| if (p_obj_drc->p_state->ui_in_bytes <= 0) { |
| p_obj_drc->p_state->ui_out_bytes = 0; |
| return 0; |
| } |
| |
| if ((p_obj_drc->p_state->ui_in_bytes / p_obj_drc->str_config.num_ch_in / |
| (p_obj_drc->str_config.pcm_size >> 3)) < |
| (UWORD32)p_obj_drc->str_config.frame_size) |
| last_frame = 1; |
| for (i = 0; i < p_obj_drc->str_config.num_ch_in; i++) { |
| audio_io_buf_real[i] = |
| scratch_buffer + i * (p_obj_drc->str_config.frame_size + 32); |
| audio_io_buf_imag[i] = |
| scratch_buffer + |
| p_obj_drc->str_config.num_ch_in * p_obj_drc->str_config.frame_size + |
| p_obj_drc->str_config.num_ch_in * 64 + |
| i * (p_obj_drc->str_config.frame_size + 64); |
| for (j = 0; j < p_obj_drc->str_config.frame_size; j++) { |
| audio_io_buf_real[i][j] = |
| input_buffer[j * p_obj_drc->str_config.num_ch_in + i]; |
| audio_io_buf_imag[i][j] = |
| input_buffer[p_obj_drc->str_config.num_ch_in * |
| p_obj_drc->str_config.frame_size + |
| j * p_obj_drc->str_config.num_ch_in + i]; |
| } |
| } |
| |
| error = impd_process_drc_bitstream_dec_gain( |
| p_obj_drc->str_payload.pstr_bitstream_dec, p_obj_drc->pstr_bit_buf, |
| p_obj_drc->str_payload.pstr_drc_config, |
| p_obj_drc->str_payload.pstr_drc_gain, |
| &p_obj_drc->str_bit_handler |
| .it_bit_buf[p_obj_drc->str_bit_handler.byte_index_bs], |
| p_obj_drc->str_bit_handler.num_bytes_bs, |
| p_obj_drc->str_bit_handler.num_bits_offset_bs, |
| &p_obj_drc->str_bit_handler.num_bits_read_bs); |
| |
| if (error > PROC_COMPLETE) return -1; |
| |
| p_obj_drc->str_bit_handler.num_bytes_read_bs = |
| (p_obj_drc->str_bit_handler.num_bits_read_bs >> 3); |
| p_obj_drc->str_bit_handler.num_bits_offset_bs = |
| (p_obj_drc->str_bit_handler.num_bits_read_bs & 7); |
| p_obj_drc->str_bit_handler.byte_index_bs += |
| p_obj_drc->str_bit_handler.num_bytes_read_bs; |
| if (p_obj_drc->str_bit_handler.gain_stream_flag == |
| 0) // ITTIAM: Flag for applying gain frame by frame |
| { |
| p_obj_drc->str_bit_handler.num_bytes_bs -= |
| p_obj_drc->str_bit_handler.num_bytes_read_bs; |
| } |
| |
| if (p_obj_drc->str_config.bitstream_file_format == |
| BITSTREAM_FILE_FORMAT_SPLIT) { |
| if (p_obj_drc->str_bit_handler.num_bits_offset_bs != 0) { |
| p_obj_drc->str_bit_handler.num_bits_read_bs = |
| p_obj_drc->str_bit_handler.num_bits_read_bs + 8 - |
| p_obj_drc->str_bit_handler.num_bits_offset_bs; |
| p_obj_drc->str_bit_handler.num_bytes_read_bs = |
| p_obj_drc->str_bit_handler.num_bytes_read_bs + 1; |
| p_obj_drc->str_bit_handler.num_bits_offset_bs = 0; |
| p_obj_drc->str_bit_handler.byte_index_bs = |
| p_obj_drc->str_bit_handler.byte_index_bs + 1; |
| if (p_obj_drc->str_bit_handler.gain_stream_flag == |
| 0) // ITTIAM: Flag for applying gain frame by frame |
| { |
| p_obj_drc->str_bit_handler.num_bytes_bs = |
| p_obj_drc->str_bit_handler.num_bytes_bs - 1; |
| } |
| } |
| } |
| |
| error = impd_drc_process_freq_domain( |
| p_obj_drc->str_payload.pstr_gain_dec[0], |
| p_obj_drc->str_payload.pstr_drc_config, |
| p_obj_drc->str_payload.pstr_drc_gain, audio_io_buf_real, |
| audio_io_buf_imag, p_obj_drc->str_payload.pstr_drc_sel_proc_output |
| ->loudness_normalization_gain_db, |
| p_obj_drc->str_payload.pstr_drc_sel_proc_output->boost, |
| p_obj_drc->str_payload.pstr_drc_sel_proc_output->compress, |
| p_obj_drc->str_payload.pstr_drc_sel_proc_output |
| ->drc_characteristic_target); |
| if (error) return -1; |
| |
| error = impd_down_mix(p_obj_drc->str_payload.pstr_drc_sel_proc_output, |
| audio_io_buf_real, p_obj_drc->str_config.frame_size); |
| if (error) return -1; |
| |
| error = impd_down_mix(p_obj_drc->str_payload.pstr_drc_sel_proc_output, |
| audio_io_buf_imag, p_obj_drc->str_config.frame_size); |
| if (error) return -1; |
| |
| error = impd_drc_process_freq_domain( |
| p_obj_drc->str_payload.pstr_gain_dec[1], |
| p_obj_drc->str_payload.pstr_drc_config, |
| p_obj_drc->str_payload.pstr_drc_gain, audio_io_buf_real, |
| audio_io_buf_imag, p_obj_drc->str_payload.pstr_drc_sel_proc_output |
| ->loudness_normalization_gain_db, |
| p_obj_drc->str_payload.pstr_drc_sel_proc_output->boost, |
| p_obj_drc->str_payload.pstr_drc_sel_proc_output->compress, |
| p_obj_drc->str_payload.pstr_drc_sel_proc_output |
| ->drc_characteristic_target); |
| if (error) return -1; |
| |
| if (p_obj_drc->str_payload.pstr_drc_sel_proc_output |
| ->loudness_normalization_gain_db != 0.0f) { |
| FLOAT32 loudness_normalization_gain = |
| (FLOAT32)pow(10.0, p_obj_drc->str_payload.pstr_drc_sel_proc_output |
| ->loudness_normalization_gain_db / |
| 20.0); |
| for (i = 0; i < p_obj_drc->str_config.num_ch_out; i++) { |
| for (j = 0; j < p_obj_drc->str_config.frame_size; j++) { |
| audio_io_buf_real[i][j] *= loudness_normalization_gain; |
| audio_io_buf_imag[i][j] *= loudness_normalization_gain; |
| } |
| } |
| } |
| num_samples_per_channel = p_obj_drc->str_config.frame_size; |
| |
| for (i = 0; i < p_obj_drc->str_config.num_ch_out; i++) { |
| for (j = 0; j < p_obj_drc->str_config.frame_size; j++) { |
| output_buffer[j * p_obj_drc->str_config.num_ch_out + i] = |
| audio_io_buf_real[i][j]; |
| output_buffer[p_obj_drc->str_config.frame_size * |
| p_obj_drc->str_config.num_ch_in + |
| j * p_obj_drc->str_config.num_ch_out + i] = |
| audio_io_buf_imag[i][j]; |
| } |
| } |
| p_obj_drc->p_state->ui_out_bytes = |
| p_obj_drc->str_config.num_ch_out * (p_obj_drc->str_config.frame_size) * 4; |
| p_obj_drc->p_state->ui_out_bytes = |
| p_obj_drc->str_config.num_ch_out * |
| (p_obj_drc->p_state->ui_in_bytes / p_obj_drc->str_config.num_ch_in); |
| |
| if (last_frame == 0) { |
| if (p_obj_drc->str_config.bitstream_file_format != |
| BITSTREAM_FILE_FORMAT_SPLIT) { |
| error = impd_process_drc_bitstream_dec( |
| p_obj_drc->str_payload.pstr_bitstream_dec, p_obj_drc->pstr_bit_buf, |
| p_obj_drc->str_payload.pstr_drc_config, |
| p_obj_drc->str_payload.pstr_loudness_info, |
| &p_obj_drc->str_bit_handler |
| .it_bit_buf[p_obj_drc->str_bit_handler.byte_index_bs], |
| p_obj_drc->str_bit_handler.num_bytes_bs, |
| p_obj_drc->str_bit_handler.num_bits_offset_bs, |
| &p_obj_drc->str_bit_handler.num_bits_read_bs); |
| |
| if (error > PROC_COMPLETE) return -1; |
| |
| p_obj_drc->str_bit_handler.num_bytes_read_bs = |
| (p_obj_drc->str_bit_handler.num_bits_read_bs >> 3); |
| p_obj_drc->str_bit_handler.num_bits_offset_bs = |
| (p_obj_drc->str_bit_handler.num_bits_read_bs & 7); |
| p_obj_drc->str_bit_handler.byte_index_bs += |
| p_obj_drc->str_bit_handler.num_bytes_read_bs; |
| p_obj_drc->str_bit_handler.num_bytes_bs -= |
| p_obj_drc->str_bit_handler.num_bytes_read_bs; |
| } |
| } |
| return error; |
| } |
