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/*
* Copyright (c) 2017 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFILTER_AFIR_H
#define AVFILTER_AFIR_H
#include "libavutil/float_dsp.h"
#include "libavutil/frame.h"
#include "libavutil/rational.h"
#include "libavutil/tx.h"
#include "avfilter.h"
#include "af_afirdsp.h"
#define MAX_IR_STREAMS 32
typedef struct AudioFIRSegment {
int nb_partitions;
int part_size;
int block_size;
int fft_length;
int coeff_size;
int input_size;
int input_offset;
int *output_offset;
int *part_index;
AVFrame *sumin;
AVFrame *sumout;
AVFrame *blockout;
AVFrame *tempin;
AVFrame *tempout;
AVFrame *buffer;
AVFrame *coeff;
AVFrame *input;
AVFrame *output;
AVTXContext **ctx, **tx, **itx;
av_tx_fn ctx_fn, tx_fn, itx_fn;
} AudioFIRSegment;
typedef struct AudioFIRContext {
const AVClass *class;
float wet_gain;
float dry_gain;
float length;
int gtype;
float ir_norm;
float ir_link;
float ir_gain;
int ir_format;
int ir_load;
float max_ir_len;
int response;
int w, h;
AVRational frame_rate;
int ir_channel;
int minp;
int maxp;
int nb_irs;
int prev_selir;
int selir;
int precision;
int format;
int eof_coeffs[MAX_IR_STREAMS];
int have_coeffs[MAX_IR_STREAMS];
int nb_taps[MAX_IR_STREAMS];
int nb_segments[MAX_IR_STREAMS];
int max_offset[MAX_IR_STREAMS];
int nb_channels;
int one2many;
int prev_is_disabled;
int *loading;
double *ch_gain;
AudioFIRSegment seg[MAX_IR_STREAMS][1024];
AVFrame *in;
AVFrame *xfade[2];
AVFrame *fadein[2];
AVFrame *ir[MAX_IR_STREAMS];
AVFrame *norm_ir[MAX_IR_STREAMS];
int min_part_size;
int max_part_size;
int64_t pts;
AudioFIRDSPContext afirdsp;
AVFloatDSPContext *fdsp;
} AudioFIRContext;
#endif /* AVFILTER_AFIR_H */
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