/******************************************************************************
 *                                                                            *
 * 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_SBR_DEC_H
#define IXHEAACD_SBR_DEC_H

typedef struct {
  WORD32 x_over_qmf[MAX_NUM_PATCHES];
  WORD32 max_stretch;
  WORD32 core_frame_length;
  WORD32 hbe_qmf_in_len;
  WORD32 hbe_qmf_out_len;
  WORD32 no_bins;
  WORD32 start_band;
  WORD32 end_band;
  WORD32 upsamp_4_flag;
  WORD32 synth_buf_offset;

  FLOAT32 *ptr_input_buf;

  FLOAT32 **qmf_in_buf;
  FLOAT32 **qmf_out_buf;

  WORD32 k_start;
  WORD32 synth_size;
  FLOAT32 synth_buf[1280];
  FLOAT32 analy_buf[640];
  FLOAT32 *synth_wind_coeff;
  FLOAT32 *analy_wind_coeff;

  FLOAT32 *synth_cos_tab;
  FLOAT32 *analy_cos_sin_tab;

  FLOAT32 norm_qmf_in_buf[46][128];
  VOID (*ixheaacd_real_synth_fft)(FLOAT32 *inp, FLOAT32 *out, WORD32 n_points);

  VOID (*ixheaacd_cmplx_anal_fft)(FLOAT32 *inp, FLOAT32 *out, WORD32 n_points);

} ia_esbr_hbe_txposer_struct;

typedef struct {
  WORD32 *ptr_sbr_overlap_buf;
  WORD32 **drc_factors_sbr;
  ia_sbr_qmf_filter_bank_struct str_codec_qmf_bank;
  ia_sbr_qmf_filter_bank_struct str_synthesis_qmf_bank;
  ia_sbr_calc_env_struct str_sbr_calc_env;
  ia_sbr_hf_generator_struct str_hf_generator;

  ia_sbr_scale_fact_struct str_sbr_scale_fact;

  WORD32 max_samp_val;
  ia_esbr_hbe_txposer_struct *p_hbe_txposer;

  FLOAT32 core_sample_buf[2624];
  FLOAT32 ph_vocod_qmf_real[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 ph_vocod_qmf_imag[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 sbr_qmf_out_real[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 sbr_qmf_out_imag[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 qmf_buf_real[TIMESLOT_BUFFER_SIZE + 2 * 32][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 qmf_buf_imag[TIMESLOT_BUFFER_SIZE + 2 * 32][NO_QMF_SYNTH_CHANNELS];

  FLOAT32 mps_qmf_buf_real[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 mps_qmf_buf_imag[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 mps_sbr_qmf_buf_real[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];
  FLOAT32 mps_sbr_qmf_buf_imag[TIMESLOT_BUFFER_SIZE][NO_QMF_SYNTH_CHANNELS];

  WORD32 sbr_scratch_local[256];
  FLOAT32 scratch_buff[320];

  FLOAT32 qmf_energy_buf[64][32];
  FLOAT32 pvc_qmf_enrg_arr[16 * 32];

  FLOAT32 **pp_qmf_buf_real;
  FLOAT32 **pp_qmf_buf_imag;

  FLOAT32 *time_sample_buf;
} ia_sbr_dec_struct;

typedef struct {
  ia_sbr_prev_frame_data_struct *pstr_prev_frame_data;
  ia_sbr_dec_struct str_sbr_dec;
  WORD32 output_frame_size;
  WORD32 sync_state;
} ia_sbr_channel_struct;

struct ia_sbr_dec_inst_struct {
  ia_ps_dec_struct *pstr_ps_stereo_dec;
  FLAG ps_present;
  ia_sbr_channel_struct *pstr_sbr_channel[MAXNRSBRCHANNELS];
  ia_sbr_header_data_struct *pstr_sbr_header[MAXNRSBRCHANNELS];
  ia_freq_band_data_struct *pstr_freq_band_data[MAXNRSBRCHANNELS];
  ia_sbr_tables_struct *pstr_sbr_tables;
  ixheaacd_misc_tables *pstr_common_tables;
  ia_pvc_data_struct *ptr_pvc_data_str;
  VOID *hbe_txposer_buffers;
  FLOAT32 *time_sample_buf[MAXNRSBRCHANNELS];
  VOID *scratch_mem_v;
  VOID *frame_buffer[2];
  ia_sbr_header_data_struct str_sbr_dflt_header;
  FLAG stereo_config_idx;
  FLAG usac_independency_flag;
  FLAG pvc_flag;
  FLAG hbe_flag;
  FLAG sbr_mode;
  FLAG prev_sbr_mode;
  FLAG inter_tes_flag;
  FLAG aot_usac_flag;
};

typedef struct ia_sbr_pers_struct {
  WORD16 *sbr_qmf_analy_states;

  WORD32 *sbr_qmf_analy_states_32;

  WORD16 *sbr_qmf_synth_states;

  WORD32 *sbr_qmf_synth_states_32;

  WORD32 **sbr_lpc_filter_states_real[MAXNRSBRCHANNELS];

  WORD32 **sbr_lpc_filter_states_imag[MAXNRSBRCHANNELS];

  WORD32 *ptr_sbr_overlap_buf[MAXNRSBRCHANNELS];

  struct ia_sbr_dec_inst_struct str_sbr_dec_inst;

  ia_transposer_settings_struct str_sbr_tran_settings;

  WORD16 *sbr_smooth_gain_buf[MAXNRSBRCHANNELS];

  WORD16 *sbr_smooth_noise_buf[MAXNRSBRCHANNELS];

  ia_sbr_prev_frame_data_struct *pstr_prev_frame_data[MAXNRSBRCHANNELS];

} ia_sbr_pers_struct;

WORD32 ixheaacd_sbr_dec(ia_sbr_dec_struct *ptr_sbr_dec, WORD16 *ptr_time_data,
                        ia_sbr_header_data_struct *ptr_header_data,
                        ia_sbr_frame_info_data_struct *ptr_frame_data,
                        ia_sbr_prev_frame_data_struct *ptr_frame_data_prev,
                        ia_ps_dec_struct *ptr_ps_dec,
                        ia_sbr_qmf_filter_bank_struct *ptr_qmf_synth_bank_r,
                        ia_sbr_scale_fact_struct *ptr_sbr_sf_r,
                        FLAG apply_processing, FLAG low_pow_flag,
                        WORD32 *ptr_work_buf_core,
                        ia_sbr_tables_struct *sbr_tables_ptr,
                        ixheaacd_misc_tables *pstr_common_tables, WORD ch_fac,
                        ia_pvc_data_struct *ptr_pvc_data_str, FLAG drc_on,
                        WORD32 drc_sbr_factors[][64], WORD32 audio_object_type);

WORD16 ixheaacd_create_sbrdec(ixheaacd_misc_tables *pstr_common_table,
                              ia_sbr_channel_struct *ptr_sbr_channel,
                              ia_sbr_header_data_struct *ptr_header_data,
                              WORD16 chan, FLAG down_sample_flag,
                              VOID *sbr_persistent_mem_v, WORD ps_enable,
                              WORD audio_object_type);

#define MAX_NUM_QMF_BANDS_ESBR 128

WORD32 ixheaacd_sbr_dec_from_mps(FLOAT32 *p_mps_qmf_output, VOID *p_sbr_dec,
                                 VOID *p_sbr_frame, VOID *p_sbr_header);

WORD32 ixheaacd_qmf_hbe_apply(ia_esbr_hbe_txposer_struct *h_hbe_txposer,
                              FLOAT32 qmf_buf_real[][64],
                              FLOAT32 qmf_buf_imag[][64], WORD32 num_columns,
                              FLOAT32 pv_qmf_buf_real[][64],
                              FLOAT32 pv_qmf_buf_imag[][64],
                              WORD32 pitch_in_bins);

WORD32 ixheaacd_sbr_env_calc(ia_sbr_frame_info_data_struct *frame_data,
                             FLOAT32 input_real[][64], FLOAT32 input_imag[][64],
                             FLOAT32 input_real1[][64],
                             FLOAT32 input_imag1[][64],
                             WORD32 x_over_qmf[MAX_NUM_PATCHES],
                             FLOAT32 *scratch_buff, FLOAT32 *env_out);

WORD32 ixheaacd_generate_hf(FLOAT32 ptr_src_buf_real[][64],
                            FLOAT32 ptr_src_buf_imag[][64],
                            FLOAT32 ptr_ph_vocod_buf_real[][64],
                            FLOAT32 ptr_ph_vocod_buf_imag[][64],
                            FLOAT32 ptr_dst_buf_real[][64],
                            FLOAT32 ptr_dst_buf_imag[][64],
                            ia_sbr_frame_info_data_struct *ptr_frame_data,
                            ia_sbr_header_data_struct *ptr_header_data);

VOID ixheaacd_clr_subsamples(WORD32 *ptr_qmf_buf, WORD32 num, WORD32 size);

VOID ixheaacd_rescale_x_overlap(
    ia_sbr_dec_struct *ptr_sbr_dec, ia_sbr_header_data_struct *ptr_header_data,
    ia_sbr_frame_info_data_struct *ptr_frame_data,
    ia_sbr_prev_frame_data_struct *ptr_frame_data_prev,
    WORD32 **pp_overlap_buffer_real, FLAG low_pow_flag);

WORD32 ixheaacd_qmf_hbe_data_reinit(
    ia_esbr_hbe_txposer_struct *ptr_hbe_transposer_str,
    WORD16 *ptr_freq_band_tbl[MAX_FREQ_COEFFS + 1], WORD16 *ptr_num_sf_bands,
    WORD32 upsamp_4_flag);

WORD32 ixheaacd_sbr_read_pvc_sce(ia_sbr_frame_info_data_struct *ptr_frame_data,
                                 ia_bit_buf_struct *it_bit_buff,
                                 WORD32 hbe_flag,
                                 ia_pvc_data_struct *ptr_pvc_data,
                                 ia_sbr_tables_struct *sbr_tables_ptr,
                                 ia_sbr_header_data_struct *ptr_header_data);

WORD32 ixheaacd_qmf_hbe_apply(ia_esbr_hbe_txposer_struct *h_hbe_txposer,
                              FLOAT32 qmf_buf_real[][64],
                              FLOAT32 qmf_buf_imag[][64], WORD32 num_columns,
                              FLOAT32 pv_qmf_buf_real[][64],
                              FLOAT32 pv_qmf_buf_imag[][64],
                              WORD32 pitch_in_bins);

WORD32 ixheaacd_esbr_dec(ia_sbr_dec_struct *ptr_sbr_dec,
                         ia_sbr_header_data_struct *ptr_header_data,
                         ia_sbr_frame_info_data_struct *ptr_frame_data,
                         FLAG apply_processing, FLAG low_pow_flag,
                         ia_sbr_tables_struct *sbr_tables_ptr, WORD32 ch_fac);

VOID ixheaacd_hbe_repl_spec(WORD32 x_over_qmf[MAX_NUM_PATCHES],
                            FLOAT32 qmf_buf_real[][64],
                            FLOAT32 qmf_buf_imag[][64], WORD32 no_bins,
                            WORD32 max_stretch);

#endif
