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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
*/
#ifndef IXHEAACD_LPP_TRAN_H
#define IXHEAACD_LPP_TRAN_H
#define MAX_NUM_PATCHES 6
#define GUARDBANDS 0
#define SHIFT_START_SB 1
typedef struct {
WORD32 phi_11;
WORD32 phi_22;
WORD32 phi_01;
WORD32 phi_02;
WORD32 phi_12;
WORD32 phi_01_im;
WORD32 phi_02_im;
WORD32 phi_12_im;
WORD32 d;
} ixheaacd_lpp_trans_cov_matrix;
typedef struct {
WORD16 src_start_band;
WORD16 src_end_band;
WORD16 guard_start_band;
WORD16 dst_start_band;
WORD16 dst_end_band;
WORD16 num_bands_in_patch;
} ia_patch_param_struct;
typedef struct {
WORD16 num_columns;
WORD16 num_patches;
WORD16 start_patch;
WORD16 stop_patch;
WORD16 bw_borders[MAX_NUM_NOISE_VALUES];
ia_patch_param_struct str_patch_param[MAX_NUM_PATCHES];
} ia_transposer_settings_struct;
typedef struct {
ia_transposer_settings_struct *pstr_settings;
WORD32 bw_array_prev[MAX_NUM_PATCHES];
WORD32 *lpc_filt_states_real[LPC_ORDER];
WORD32 *lpc_filt_states_imag[LPC_ORDER];
} ia_sbr_hf_generator_struct;
VOID ixheaacd_low_pow_hf_generator(
ia_sbr_hf_generator_struct *hf_generator, WORD32 **qmf_buff_re,
WORD16 *degree_alias, WORD first_slot_offset, WORD last_slot_offset,
WORD num_if_bands, WORD max_qmf_subband_aac, WORD32 *sbr_invf_mode,
WORD32 *sbr_invf_mode_prev, WORD32 norm_max, WORD32 *ptr_qmf_matrix);
VOID ixheaacd_hf_generator(ia_sbr_hf_generator_struct *hf_generator,
ia_sbr_scale_fact_struct *sbr_scale_factor,
WORD32 **qmf_buff_re, WORD32 **qmf_buff_im,
WORD time_step, WORD first_slot_offset,
WORD last_slot_offset, WORD num_if_bands,
WORD max_qmf_subband_aac, WORD32 *sbr_invf_mode,
WORD32 *sbr_invf_mode_prev, WORD32 *ptr_qmf_matrix,
WORD audio_object_type);
VOID ixheaacd_invfilt_level_emphasis(ia_sbr_hf_generator_struct *hf_generator,
WORD32 num_if_bands, WORD32 *sbr_invf_mode,
WORD32 *sbr_invf_mode_prev,
WORD32 *bw_array);
struct ixheaacd_lpp_trans_patch {
WORD32 num_patches;
WORD32 start_subband[MAX_NUM_PATCHES + 1];
};
VOID ixheaacd_covariance_matrix_calc_dec(
WORD32 *sub_sign_xlow, ixheaacd_lpp_trans_cov_matrix *cov_matrix,
WORD32 count);
VOID ixheaacd_covariance_matrix_calc_armv7(
WORD32 *sub_sign_xlow, ixheaacd_lpp_trans_cov_matrix *cov_matrix,
WORD32 count);
VOID ixheaacd_covariance_matrix_calc_2_dec(
ixheaacd_lpp_trans_cov_matrix *cov_matrix, WORD32 *real_buffer,
WORD32 ixheaacd_num_bands, WORD16 slots);
VOID ixheaacd_covariance_matrix_calc_2_armv7(
ixheaacd_lpp_trans_cov_matrix *cov_matrix, WORD32 *real_buffer,
WORD32 ixheaacd_num_bands, WORD16 slots);
#endif /* IXHEAACD_LPP_TRAN_H */
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