127 lines
No EOL
5.1 KiB
C
127 lines
No EOL
5.1 KiB
C
/******************************************************************************
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* *
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#pragma once
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#define LEN_RING_BUF (12)
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#define LEN_RING_BUF_SOS_1 (2)
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#define LEN_RING_BUF_SOS_2 (10)
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#define IIR_NUM_COEFFS (6)
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#define IIR_DEN_COEFFS (11)
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#define IIR_SOS_STAGES (5)
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#define IIR_SOS_COEFFS (3)
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typedef struct {
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const FLOAT32 *ptr_coeff_iir_num;
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const FLOAT32 *ptr_coeff_iir_den;
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WORD32 max;
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FLOAT32 ring_buf_1[LEN_RING_BUF];
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FLOAT32 ring_buf_2[LEN_RING_BUF];
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} ixheaace_iir_filter;
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typedef struct {
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const FLOAT32 *ptr_coeff_iir_num;
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const FLOAT32 *ptr_coeff_iir_den;
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FLOAT32 gain_sos;
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FLOAT32 ring_buf_sos_1[LEN_RING_BUF_SOS_1];
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FLOAT32 ring_buf_sos_2[LEN_RING_BUF_SOS_2];
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} ixheaace_iir_sos_filter;
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struct ixheaace_iir_params {
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const FLOAT32 coeff_iir_num[IIR_NUM_COEFFS];
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const FLOAT32 coeff_iir_den[IIR_DEN_COEFFS];
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const WORD32 max;
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const WORD32 delay;
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};
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struct ixheaace_iir_params_sos {
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const FLOAT32 coeff_iir_sos_num[IIR_SOS_STAGES][IIR_SOS_COEFFS];
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const FLOAT32 coeff_iir_sos_den[IIR_SOS_STAGES][IIR_SOS_COEFFS];
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const FLOAT32 gain_sos;
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const WORD32 delay;
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};
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typedef struct {
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struct ixheaace_iir_params const iir_param_set;
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} ixheaace_resampler_table;
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typedef struct {
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struct ixheaace_iir_params_sos const iir_param_set_sos;
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} ixheaace_resampler_sos_table;
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typedef struct {
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ixheaace_iir_filter iir_filter;
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WORD32 ratio;
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WORD32 delay;
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WORD32 pending;
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} ixheaace_iir21_resampler;
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typedef struct {
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ixheaace_iir_sos_filter iir_filter;
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WORD32 ratio;
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WORD32 delay;
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WORD32 pending;
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} ixheaace_iir_sos_resampler;
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typedef struct {
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FLOAT32 downsampler_in_buffer[INPUT_LEN_DOWNSAMPLE * IXHEAACE_MAX_CH_IN_BS_ELE * UPSAMPLE_FAC];
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FLOAT32
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downsampler_out_buffer[INPUT_LEN_DOWNSAMPLE * IXHEAACE_MAX_CH_IN_BS_ELE * UPSAMPLE_FAC];
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FLOAT32 scratch_buf1_temp[IIR_SOS_COEFFS];
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FLOAT32 scratch_buf2_temp[IIR_SOS_COEFFS];
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FLOAT32 ring_buf_temp[LEN_RING_BUF];
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} ixheaace_resampler_scratch;
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WORD32 ixheaace_resampler_scr_size(VOID);
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VOID ixheaace_get_input_scratch_buf(VOID *ptr_scr, FLOAT32 **ptr_scratch_buf_inp);
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IA_ERRORCODE ia_enhaacplus_enc_init_iir_resampler(ixheaace_iir21_resampler *pstr_resampler,
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WORD32 ratio,
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ixheaace_resampler_table *pstr_resampler_table);
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VOID ia_enhaacplus_enc_iir_downsampler(ixheaace_iir21_resampler *pstr_down_sampler,
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FLOAT32 *ptr_in_samples, WORD32 num_in_samples,
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WORD32 in_stride, FLOAT32 *ptr_out_samples,
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WORD32 *num_out_samples, WORD32 out_stride,
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FLOAT32 *ptr_ring_buf1, FLOAT32 *ptr_ring_buf2,
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ixheaace_resampler_scratch *pstr_resampler_scratch);
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VOID ia_enhaacplus_enc_iir_sos_downsampler(ixheaace_iir_sos_resampler *pstr_down_sampler,
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FLOAT32 *ptr_in_samples, WORD32 num_in_samples,
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WORD32 in_stride, FLOAT32 *ptr_out_samples,
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WORD32 *num_out_samples, FLOAT32 *ptr_ring_buf1,
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FLOAT32 *ptr_ring_buf2,
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ixheaace_resampler_scratch *pstr_resampler_scratch);
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VOID ia_enhaacplus_enc_iir_sos_upsampler(ixheaace_iir_sos_resampler *pstr_up_sampler,
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FLOAT32 *ptr_in_samples, WORD32 num_in_samples,
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WORD32 in_stride, FLOAT32 *ptr_out_samples,
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WORD32 *num_out_samples, FLOAT32 *ptr_ring_buf1,
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FLOAT32 *ptr_ring_buf2,
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ixheaace_resampler_scratch *pstr_resampler_scratch);
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WORD32 ia_enhaacplus_enc_compute_resampling_ratio(WORD32 ccfl_idx);
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VOID ixheaace_upsampling_inp_buf_generation(FLOAT32 *ptr_inp_buf, FLOAT32 *ptr_temp_buf,
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WORD32 num_samples, WORD32 upsamp_fac, WORD32 offset);
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IA_ERRORCODE
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ia_enhaacplus_enc_init_iir_sos_resampler(ixheaace_iir_sos_resampler *pstr_resampler, WORD32 ratio,
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ixheaace_resampler_sos_table *pstr_resampler_table); |