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libxaac/decoder/drc_src/impd_drc_main_td_qmf_process.c
Ramesh Katuri b3226ce6f8 Formatting changes 
Formatting .c and .h files using clang-format
Formatting .s files

Bug: 80493357
Test: compare object sizes
Change-Id: I38296083c9d2d566a6a2564db2e391e4b2bd43a9
2018-06-07 16:52:19 -07:00

364 lines
13 KiB
C
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/******************************************************************************
*
* 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_peak_limiter.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_bitbuffer.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_api_struct_def.h"
#include "impd_drc_hashdefines.h"
#include "impd_drc_rom.h"
VOID process_qmf_syn_filt_bank(ia_drc_qmf_filt_struct *qmf_filt, FLOAT64 *buff,
FLOAT32 *input_real, FLOAT32 *input_imag,
FLOAT32 *output) {
WORD32 i, j;
FLOAT64 U[10 * QMF_NUM_FILT_BANDS];
FLOAT64 W[10 * QMF_NUM_FILT_BANDS];
FLOAT64 tmp;
for (i = 20 * QMF_FILT_RESOLUTION - 1; i >= 2 * QMF_FILT_RESOLUTION; i--) {
buff[i] = buff[i - 2 * QMF_FILT_RESOLUTION];
}
for (i = 0; i < 2 * QMF_FILT_RESOLUTION; i++) {
tmp = 0.0;
for (j = 0; j < QMF_FILT_RESOLUTION; j++) {
tmp = tmp + input_real[j] * qmf_filt->syn_tab_real[i][j] -
input_imag[j] * qmf_filt->syn_tab_imag[i][j];
}
buff[i] = tmp;
}
for (i = 0; i < 5; i++) {
for (j = 0; j < QMF_FILT_RESOLUTION; j++) {
U[2 * QMF_FILT_RESOLUTION * i + j] =
buff[4 * QMF_FILT_RESOLUTION * i + j];
U[2 * QMF_FILT_RESOLUTION * i + QMF_FILT_RESOLUTION + j] =
buff[4 * QMF_FILT_RESOLUTION * i + 3 * QMF_FILT_RESOLUTION + j];
}
}
for (i = 0; i < 10 * QMF_FILT_RESOLUTION; i++) {
W[i] = U[i] * qmf_filter_coeff[i];
}
for (i = 0; i < QMF_FILT_RESOLUTION; i++) {
tmp = 0.0;
for (j = 0; j < 10; j++) {
tmp = tmp + W[QMF_FILT_RESOLUTION * j + i];
}
output[i] = (FLOAT32)tmp;
}
}
VOID process_qmf_ana_filt_bank(ia_drc_qmf_filt_struct *qmf_filt, FLOAT64 *buff,
FLOAT32 *input, FLOAT32 *output_real,
FLOAT32 *output_imag) {
WORD32 i, j;
FLOAT32 Z[10 * QMF_NUM_FILT_BANDS];
FLOAT32 Y[2 * QMF_NUM_FILT_BANDS];
for (i = 10 * QMF_FILT_RESOLUTION - 1; i >= QMF_FILT_RESOLUTION; i--) {
buff[i] = buff[i - QMF_FILT_RESOLUTION];
}
for (i = QMF_FILT_RESOLUTION - 1; i >= 0; i--) {
buff[i] = input[QMF_FILT_RESOLUTION - 1 - i];
}
for (i = 0; i < 10 * QMF_FILT_RESOLUTION; i++) {
Z[i] = (FLOAT32)(buff[i] * qmf_filter_coeff[i]);
}
for (i = 0; i < 2 * QMF_FILT_RESOLUTION; i++) {
Y[i] = 0.0f;
for (j = 0; j < 5; j++) {
Y[i] += Z[i + j * 2 * QMF_FILT_RESOLUTION];
}
}
for (i = 0; i < QMF_FILT_RESOLUTION; i++) {
output_real[i] = 0.0f;
output_imag[i] = 0.0f;
for (j = 0; j < 2 * QMF_FILT_RESOLUTION; j++) {
output_real[i] += (FLOAT32)(Y[j] * qmf_filt->ana_tab_real[i][j]);
output_imag[i] += (FLOAT32)(Y[j] * qmf_filt->ana_tab_imag[i][j]);
}
}
}
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 (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_td_qmf(ia_drc_api_struct *p_obj_drc)
{
WORD32 error, i, j, num_samples_per_channel;
FLOAT32 *input_buffer;
WORD16 *input_buffer16, *output_buffer16;
FLOAT32 *output_buffer;
FLOAT32 *audio_io_buf_real[10];
FLOAT32 *audio_io_buf_imag[10];
FLOAT32 *audio_in_out_buf[10];
FLOAT32 *scratch_buffer;
WORD32 last_frame = 0;
error = 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];
input_buffer16 = (WORD16 *)p_obj_drc->pp_mem[2];
output_buffer16 = (WORD16 *)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_in_out_buf[i] = scratch_buffer;
scratch_buffer = scratch_buffer + (p_obj_drc->str_config.frame_size + 32);
audio_io_buf_real[i] =
scratch_buffer +
(p_obj_drc->str_config.frame_size * p_obj_drc->str_config.num_ch_in +
512);
audio_io_buf_imag[i] = scratch_buffer +
2 * (p_obj_drc->str_config.frame_size *
p_obj_drc->str_config.num_ch_in +
512);
;
for (j = 0; j < p_obj_drc->str_config.frame_size; j++) {
if (p_obj_drc->str_config.pcm_size == 16) {
audio_in_out_buf[i][j] =
((FLOAT32)input_buffer16[j * p_obj_drc->str_config.num_ch_in + i]) /
32767.0f;
} else {
audio_in_out_buf[i][j] =
input_buffer[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) {
/* shift over fill-bits for frame byte alignment */
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;
}
}
}
for (i = 0; i < p_obj_drc->str_config.num_ch_in; i++) {
for (j = 0; j < p_obj_drc->str_config.frame_size; j += 64) {
process_qmf_ana_filt_bank(
p_obj_drc->str_payload.pstr_qmf_filter,
p_obj_drc->str_payload.pstr_qmf_filter->ana_buff +
i * 4 * p_obj_drc->str_config.frame_size,
&(audio_in_out_buf[i][j]), &(audio_io_buf_real[i][j]),
&(audio_io_buf_imag[i][j]));
}
}
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 error;
if (p_obj_drc->str_payload.pstr_drc_sel_proc_output->target_channel_count <
p_obj_drc->str_payload.pstr_drc_sel_proc_output->base_channel_count) {
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 error;
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 error;
}
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;
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 += 64) {
process_qmf_syn_filt_bank(
p_obj_drc->str_payload.pstr_qmf_filter,
p_obj_drc->str_payload.pstr_qmf_filter->syn_buff +
i * 4 * p_obj_drc->str_config.frame_size,
&(audio_io_buf_real[i][j]), &(audio_io_buf_imag[i][j]),
&(audio_in_out_buf[i][j]));
}
}
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++) {
if (p_obj_drc->str_config.pcm_size == 16) {
output_buffer16[j * p_obj_drc->str_config.num_ch_out + i] =
(WORD16)(audio_in_out_buf[i][j] * 32767.0f);
} else {
output_buffer[j * p_obj_drc->str_config.num_ch_out + i] =
audio_in_out_buf[i][j];
}
}
}
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 (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;
}
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