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FFmpeg/libavfilter/af_afir.h

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  1. /*

  2.  * Copyright (c) 2017 Paul B Mahol

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

  6.  * FFmpeg is free software; you can redistribute it and/or

  7.  * modify it under the terms of the GNU Lesser General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2.1 of the License, or (at your option) any later version.

  10.  *

  11.  * FFmpeg is distributed in the hope that it will be useful,

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  14.  * Lesser General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU Lesser General Public

  17.  * License along with FFmpeg; if not, write to the Free Software

  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  19.  */

  20. 

  21. #ifndef AVFILTER_AFIR_H

  22. #define AVFILTER_AFIR_H

  23. 

  24. #include "libavutil/audio_fifo.h"

  25. #include "libavutil/common.h"

  26. #include "libavutil/float_dsp.h"

  27. #include "libavutil/opt.h"

  28. #include "libavcodec/avfft.h"

  29. 

  30. #include "audio.h"

  31. #include "avfilter.h"

  32. #include "formats.h"

  33. #include "internal.h"

  34. 

  35. typedef struct AudioFIRContext {

  36.     const AVClass *class;

  37. 

  38.     float wet_gain;

  39.     float dry_gain;

  40.     float length;

  41.     int gtype;

  42.     float ir_gain;

  43.     int ir_format;

  44.     float max_ir_len;

  45.     int response;

  46.     int w, h;

  47.     AVRational frame_rate;

  48.     int ir_channel;

  49.     int minp;

  50.     int maxp;

  51. 

  52.     float gain;

  53. 

  54.     int eof_coeffs;

  55.     int have_coeffs;

  56.     int nb_coeffs;

  57.     int nb_taps;

  58.     int part_size;

  59.     int part_index;

  60.     int coeff_size;

  61.     int block_size;

  62.     int nb_partitions;

  63.     int nb_channels;

  64.     int ir_length;

  65.     int fft_length;

  66.     int nb_coef_channels;

  67.     int one2many;

  68.     int nb_samples;

  69. 

  70.     RDFTContext **rdft, **irdft;

  71.     float **sum;

  72.     float **block;

  73.     FFTComplex **coeff;

  74. 

  75.     AVAudioFifo *fifo;

  76.     AVFrame *in[2];

  77.     AVFrame *buffer;

  78.     AVFrame *video;

  79.     int64_t pts;

  80.     int index;

  81. 

  82.     AVFloatDSPContext *fdsp;

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

  84.                       ptrdiff_t len);

  85. } AudioFIRContext;

  86. 

  87. void ff_afir_init_x86(AudioFIRContext *s);

  88. 

  89. #endif /* AVFILTER_AFIR_H */