/*
  * 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/audio_fifo.h"
 #include "libavutil/common.h"
 #include "libavutil/float_dsp.h"
 #include "libavutil/opt.h"
 #include "libavcodec/avfft.h"
 
 #include "audio.h"
 #include "avfilter.h"
 #include "formats.h"
 #include "internal.h"
 
 #define MAX_IR_DURATION 30
 
 typedef struct AudioFIRContext {
     const AVClass *class;
 
     float wet_gain;
     float dry_gain;
     float length;
     int again;
 
     float gain;
 
     int eof_coeffs;
     int have_coeffs;
     int nb_coeffs;
     int nb_taps;
     int part_size;
     int part_index;
     int coeff_size;
     int block_size;
     int nb_partitions;
     int nb_channels;
     int ir_length;
     int fft_length;
     int nb_coef_channels;
     int one2many;
     int nb_samples;
     int want_skip;
     int need_padding;
 
     RDFTContext **rdft, **irdft;
     float **sum;
     float **block;
     FFTComplex **coeff;
 
     AVAudioFifo *fifo[2];
     AVFrame *in[2];
     AVFrame *buffer;
     int64_t pts;
     int index;
 
     AVFloatDSPContext *fdsp;
     void (*fcmul_add)(float *sum, const float *t, const float *c,
                       ptrdiff_t len);
 } AudioFIRContext;
 
 void ff_afir_init_x86(AudioFIRContext *s);
 
 #endif /* AVFILTER_AFIR_H */