doxygen/4.3/af__afir_8h_source.html

/*

 * 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/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"


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 *sum;

    AVFrame *block;

    AVFrame *buffer;

    AVFrame *coeff;

    AVFrame *input;

    AVFrame *output;


    RDFTContext **rdft, **irdft;

} AudioFIRSegment;


typedef struct AudioFIRDSPContext {

    void (*fcmul_add)(float *sum, const float *t, const float *c,

                      ptrdiff_t len);

} AudioFIRDSPContext;


typedef struct AudioFIRContext {

    const AVClass *class;


    float wet_gain;

    float dry_gain;

    float length;

    int gtype;

    float ir_gain;

    int ir_format;

    float max_ir_len;

    int response;

    int w, h;

    AVRational frame_rate;

    int ir_channel;

    int minp;

    int maxp;

    int nb_irs;

    int selir;


    float gain;


    int eof_coeffs[32];

    int have_coeffs;

    int nb_taps;

    int nb_channels;

    int nb_coef_channels;

    int one2many;


    AudioFIRSegment seg[1024];

    int nb_segments;


    AVFrame *in;

    AVFrame *ir[32];

    AVFrame *video;

    int min_part_size;

    int64_t pts;


    AudioFIRDSPContext afirdsp;

    AVFloatDSPContext *fdsp;


} AudioFIRContext;


void ff_afir_init(AudioFIRDSPContext *s);

void ff_afir_init_x86(AudioFIRDSPContext *s);


#endif /* AVFILTER_AFIR_H */